@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-translate-x:0;--tw-translate-y:0;--tw-translate-z:0;--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial;--tw-space-y-reverse:0;--tw-divide-y-reverse:0;--tw-border-style:solid;--tw-gradient-position:initial;--tw-gradient-from:#0000;--tw-gradient-via:#0000;--tw-gradient-to:#0000;--tw-gradient-stops:initial;--tw-gradient-via-stops:initial;--tw-gradient-from-position:0%;--tw-gradient-via-position:50%;--tw-gradient-to-position:100%;--tw-leading:initial;--tw-font-weight:initial;--tw-tracking:initial;--tw-ordinal:initial;--tw-slashed-zero:initial;--tw-numeric-figure:initial;--tw-numeric-spacing:initial;--tw-numeric-fraction:initial;--tw-shadow:0 0 #0000;--tw-shadow-color:initial;--tw-shadow-alpha:100%;--tw-inset-shadow:0 0 #0000;--tw-inset-shadow-color:initial;--tw-inset-shadow-alpha:100%;--tw-ring-color:initial;--tw-ring-shadow:0 0 #0000;--tw-inset-ring-color:initial;--tw-inset-ring-shadow:0 0 #0000;--tw-ring-inset:initial;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-outline-style:solid;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial;--tw-backdrop-blur:initial;--tw-backdrop-brightness:initial;--tw-backdrop-contrast:initial;--tw-backdrop-grayscale:initial;--tw-backdrop-hue-rotate:initial;--tw-backdrop-invert:initial;--tw-backdrop-opacity:initial;--tw-backdrop-saturate:initial;--tw-backdrop-sepia:initial;--tw-duration:initial;--tw-ease:initial;--tw-content:"";--tw-scale-x:1;--tw-scale-y:1;--tw-scale-z:1;--tw-animation-delay:0s;--tw-animation-direction:normal;--tw-animation-duration:initial;--tw-animation-fill-mode:none;--tw-animation-iteration-count:1;--tw-enter-blur:0;--tw-enter-opacity:1;--tw-enter-rotate:0;--tw-enter-scale:1;--tw-enter-translate-x:0;--tw-enter-translate-y:0;--tw-exit-blur:0;--tw-exit-opacity:1;--tw-exit-rotate:0;--tw-exit-scale:1;--tw-exit-translate-x:0;--tw-exit-translate-y:0}}}@layer theme{:root,:host{--font-sans:var(--font-sans);--font-mono:var(--font-mono);--color-red-400:#ff6568;--color-red-500:#fb2c36;--color-red-600:#e40014;--color-orange-300:#ffb96d;--color-orange-500:#fe6e00;--color-amber-500:#f99c00;--color-teal-300:#46ecd5;--color-teal-500:#00baa7;--color-cyan-300:#53eafd;--color-cyan-500:#00b7d7;--color-blue-300:#90c5ff;--color-blue-500:#3080ff;--color-indigo-300:#a4b3ff;--color-indigo-500:#625fff;--color-violet-300:#c4b4ff;--color-violet-500:#8d54ff;--color-pink-300:#fda5d5;--color-pink-500:#f6339a;--color-black:#000;--color-white:#fff;--spacing:.25rem;--container-xs:20rem;--container-sm:24rem;--container-md:28rem;--container-lg:32rem;--container-xl:36rem;--container-2xl:42rem;--container-3xl:48rem;--container-4xl:56rem;--container-5xl:64rem;--container-7xl:80rem;--text-xs:.75rem;--text-xs--line-height:calc(1 / .75);--text-sm:.875rem;--text-sm--line-height:calc(1.25 / .875);--text-base:1rem;--text-base--line-height:calc(1.5 / 1);--text-lg:1.125rem;--text-lg--line-height:calc(1.75 / 1.125);--text-xl:1.25rem;--text-xl--line-height:calc(1.75 / 1.25);--text-2xl:1.5rem;--text-2xl--line-height:calc(2 / 1.5);--text-3xl:1.875rem;--text-3xl--line-height:calc(2.25 / 1.875);--text-4xl:2.25rem;--text-4xl--line-height:calc(2.5 / 2.25);--text-5xl:3rem;--text-5xl--line-height:1;--text-6xl:3.75rem;--text-6xl--line-height:1;--text-7xl:4.5rem;--text-7xl--line-height:1;--font-weight-normal:400;--font-weight-medium:500;--font-weight-semibold:600;--font-weight-bold:700;--tracking-tight:-.025em;--tracking-wide:.025em;--tracking-wider:.05em;--tracking-widest:.1em;--leading-tight:1.25;--leading-snug:1.375;--leading-relaxed:1.625;--ease-in-out:cubic-bezier(.4, 0, .2, 1);--animate-spin:spin 1s linear infinite;--animate-ping:ping 1s cubic-bezier(0, 0, .2, 1) infinite;--animate-pulse:pulse 2s cubic-bezier(.4, 0, .6, 1) infinite;--blur-sm:8px;--blur-xl:24px;--blur-2xl:40px;--blur-3xl:64px;--default-transition-duration:.15s;--default-transition-timing-function:cubic-bezier(.4, 0, .2, 1);--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}@supports (color:lab(0% 0 0)){:root,:host{--color-red-400:lab(63.7053% 60.745 31.3109);--color-red-500:lab(55.4814% 75.0732 48.8528);--color-red-600:lab(48.4493% 77.4328 61.5452);--color-orange-300:lab(80.8059% 21.7313 50.4455);--color-orange-500:lab(64.272% 57.1788 90.3583);--color-amber-500:lab(72.7183% 31.8672 97.9407);--color-teal-300:lab(84.8977% -48.1516 -1.3321);--color-teal-500:lab(67.3859% -49.0983 -2.63511);--color-cyan-300:lab(85.3886% -36.7636 -21.5716);--color-cyan-500:lab(67.805% -35.3952 -30.2018);--color-blue-300:lab(77.5052% -6.4629 -36.42);--color-blue-500:lab(54.1736% 13.3369 -74.6839);--color-indigo-300:lab(74.0235% 8.54138 -41.6075);--color-indigo-500:lab(48.295% 38.3129 -81.9673);--color-violet-300:lab(76.7419% 18.3911 -37.0706);--color-violet-500:lab(49.9355% 55.1776 -81.8963);--color-pink-300:lab(77.8308% 38.525 -10.5394);--color-pink-500:lab(56.9303% 76.8162 -8.07021)}}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}*{border-color:var(--border);outline-color:var(--ring)}@supports (color:color-mix(in lab, red, red)){*{outline-color:color-mix(in oklab, var(--ring) 50%, transparent)}}html{background:var(--ec-canvas);font-family:var(--font-sans);accent-color:var(--ec-brand);scrollbar-color:var(--ec-text-faint) transparent}@supports (color:color-mix(in lab, red, red)){html{scrollbar-color:color-mix(in srgb, var(--ec-text-faint) 55%, transparent) transparent}}body{background:var(--ec-canvas);color:var(--ec-text-primary);font-feature-settings:"cv11", "ss01", "ss03";min-height:100vh;position:relative}main,[data-content],header,footer,nav{z-index:1;position:relative}}@layer components{.landing-section{max-width:var(--ec-maxw,1180px);margin-left:auto;margin-right:auto;padding:clamp(4rem,8vw,7rem) 2rem}.ec-card{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-card);box-shadow:var(--ec-card-shadow);position:relative}.ec-card-interactive{transition:all .3s cubic-bezier(.4,0,.2,1)}.ec-card-interactive:hover{background:var(--ec-surface-raised);border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-card-interactive:hover{border-color:color-mix(in srgb, var(--ec-brand) 30%, transparent)}}.ec-card-interactive:hover{box-shadow:var(--ec-shadow-elevation-2);transform:translateY(-2px)}.ec-shadow-elevation-1{box-shadow:var(--ec-shadow-elevation-1)}.ec-shadow-elevation-2{box-shadow:var(--ec-shadow-elevation-2)}.ec-shadow-elevation-3{box-shadow:var(--ec-shadow-elevation-3)}.ec-notebook{background-color:var(--ec-notebook-paper);border:1px solid var(--ec-border);border-radius:var(--ec-radius-card);min-width:0;box-shadow:var(--ec-shadow-elevation-1);color:var(--ec-text-primary);contain:paint;position:relative;overflow:hidden}.ec-notebook:before{content:"";pointer-events:none;opacity:.05;background-image:radial-gradient(circle at 18% 22%,#ffffff0f 0%,#0000 45%),radial-gradient(circle at 82% 68%,#0000000d 0%,#0000 40%),repeating-linear-gradient(0deg,#0000,#0000 3px,#ffffff03 3px 4px);background-repeat:no-repeat,no-repeat,repeat;background-size:100% 100%,100% 100%,100% 8px;position:absolute;inset:0}.ec-notebook>*{z-index:1;position:relative}.ec-card-premium{background:var(--ec-surface-raised);border:1px solid var(--ec-border);border-radius:var(--ec-radius-card);box-shadow:var(--ec-card-shadow);transition:all .3s cubic-bezier(.4,0,.2,1);position:relative}.ec-card-premium:hover{box-shadow:var(--ec-card-hover-shadow);transform:translateY(-2px)}.ec-card-brand{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-card);box-shadow:var(--ec-shadow-paper,var(--ec-card-shadow));position:relative}.ec-btn-primary{background:var(--ec-brand);color:var(--ec-on-brand-text);border-radius:var(--ec-radius-pill,999px);letter-spacing:0;min-height:44px;box-shadow:var(--ec-btn-glow);cursor:pointer;border:1px solid #0000;justify-content:center;align-items:center;gap:8px;padding:14px 28px;font-size:15px;font-weight:600;line-height:1.2;transition:transform .2s cubic-bezier(.2,1.3,.4,1),box-shadow .18s;display:inline-flex}.ec-btn-primary:hover:not(:disabled):not([data-loading=true]){background:var(--ec-brand-deep,#8f1f1c);box-shadow:var(--ec-btn-glow-hover);transform:translateY(-2px)scale(1.015)}.ec-btn-primary:active:not(:disabled):not([data-loading=true]){filter:brightness(.95);transform:scale(.98)translateY(0)}.ec-btn-primary:disabled,.ec-btn-primary[data-loading=true],.ec-btn-primary[aria-busy=true]{cursor:wait;opacity:.92;pointer-events:none}.ec-btn-primary.ec-btn-is-loading,.ec-btn-primary[data-loading=true]{animation:1.2s ease-in-out infinite ec-btn-loading-breathe}@keyframes ec-btn-loading-breathe{0%,to{box-shadow:var(--ec-btn-glow)}50%{box-shadow:var(--ec-btn-glow-hover)}}.ec-btn-secondary{color:var(--ec-text-primary);border-radius:var(--ec-radius-pill,999px);border:1px solid var(--ec-border);cursor:pointer;background:0 0;justify-content:center;align-items:center;gap:8px;min-height:44px;padding:14px 24px;font-size:16px;font-weight:500;line-height:1.2;transition:all .2s cubic-bezier(.4,0,.2,1);display:inline-flex}.ec-btn-secondary:hover:not(:disabled):not([data-loading=true]){border-color:var(--ec-text-primary);background:var(--ec-text-primary)}@supports (color:color-mix(in lab, red, red)){.ec-btn-secondary:hover:not(:disabled):not([data-loading=true]){background:color-mix(in srgb, var(--ec-text-primary) 3%, transparent)}}.ec-btn-secondary:hover:not(:disabled):not([data-loading=true]){transform:translateY(-1px)}.ec-btn-secondary:active:not(:disabled):not([data-loading=true]){filter:brightness(.95);transform:scale(.98)translateY(0)}.ec-btn-secondary:disabled,.ec-btn-secondary[data-loading=true],.ec-btn-secondary[aria-busy=true]{cursor:not-allowed;opacity:.6;pointer-events:none}.ec-btn-ghost{color:var(--ec-text-secondary);border-radius:var(--ec-radius-button);cursor:pointer;background:0 0;border:1px solid #0000;justify-content:center;align-items:center;gap:8px;min-height:44px;padding:12px 18px;font-size:16px;font-weight:600;line-height:1.2;transition:all .2s cubic-bezier(.4,0,.2,1);display:inline-flex}.ec-btn-ghost:hover:not(:disabled):not([data-loading=true]){background:var(--ec-brand-muted);color:var(--ec-text-primary)}.ec-btn-ghost:active:not(:disabled):not([data-loading=true]){filter:brightness(.95);transform:scale(.98)}.ec-btn-ghost:disabled,.ec-btn-ghost[data-loading=true],.ec-btn-ghost[aria-busy=true]{cursor:not-allowed;opacity:.6;pointer-events:none}.ec-btn-warm{background:var(--ec-accent-warm-soft);color:var(--ec-accent-warm-deep);border-radius:var(--ec-radius-pill,999px);border:1px solid var(--ec-accent-warm-border);cursor:pointer;justify-content:center;align-items:center;gap:8px;min-height:44px;padding:13px 24px;font-size:15px;font-weight:600;line-height:1.2;transition:transform .2s cubic-bezier(.2,1.3,.4,1),background .18s,box-shadow .18s;display:inline-flex}.ec-btn-warm:hover:not(:disabled):not([data-loading=true]){background:var(--ec-accent-warm)}@supports (color:color-mix(in lab, red, red)){.ec-btn-warm:hover:not(:disabled):not([data-loading=true]){background:color-mix(in srgb, var(--ec-accent-warm) 22%, transparent)}}.ec-btn-warm:hover:not(:disabled):not([data-loading=true]){border-color:var(--ec-accent-warm-deep);transform:translateY(-2px)scale(1.015)}.ec-btn-warm:active:not(:disabled):not([data-loading=true]){filter:brightness(.96);transform:scale(.98)translateY(0)}@media (prefers-reduced-motion:reduce){.ec-btn-primary:active:not(:disabled):not([data-loading=true]),.ec-btn-secondary:active:not(:disabled):not([data-loading=true]),.ec-btn-ghost:active:not(:disabled):not([data-loading=true]),.ec-btn-warm:active:not(:disabled):not([data-loading=true]),.ec-pill:active{transform:none}}.ec-card-warm{background:var(--ec-surface-warm);border:1px solid var(--ec-border);border-radius:var(--ec-radius-card);box-shadow:var(--ec-card-shadow-warm);position:relative}.ec-card-rounded-lg{border-radius:var(--ec-radius-card-lg)}.ec-card-accent-edge{position:relative;overflow:hidden}.ec-card-accent-edge:before{content:"";background:var(--acc,var(--ec-brand));opacity:.7;height:3px;transition:opacity .2s;position:absolute;inset:0 0 auto}.ec-card-accent-edge:hover:before{opacity:1}.ec-card-badge{letter-spacing:.04em;text-transform:uppercase;background:var(--ec-accent-warm-soft);color:var(--ec-accent-warm-deep);border:1px solid var(--ec-accent-warm-border);border-radius:999px;align-items:center;gap:4px;padding:3px 9px;font-size:11px;font-weight:700;display:inline-flex;position:absolute;top:12px;right:12px}.ec-card-badge--brand{background:var(--ec-brand-muted);color:var(--green-on-tint,var(--ec-brand));border-color:var(--ec-brand-border)}.ec-chip-warm{background:var(--ec-accent-warm-soft);color:var(--ec-accent-warm-deep)}.ec-chip-accent{background:var(--acc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.ec-chip-accent{background:color-mix(in srgb, var(--acc,var(--ec-brand)) 12%, transparent)}}.ec-chip-accent{color:var(--acc,var(--ec-brand))}.subject-accented{--acc-blue:var(--ec-acc-blue);--acc-violet:var(--ec-acc-violet);--acc-teal:var(--ec-acc-teal);--acc-rose:var(--ec-acc-rose);--acc-slate:var(--ec-acc-slate);--ink:var(--ec-brand);--amber:var(--ec-c-math);--red:var(--ec-ink-red)}.ec-btn-primary:focus-visible,.ec-btn-secondary:focus-visible,.ec-btn-ghost:focus-visible,.ec-btn-warm:focus-visible,.ec-pill:focus-visible,a.scard:focus-visible,.ec-card-interactive:focus-visible{box-shadow:var(--ec-focus-ring);outline:none}.ms-hero--energized{background-image:radial-gradient(420px circle at 92% 8%, var(--ec-accent-warm-soft) 0%, transparent 60%);background-repeat:no-repeat}.ec-chip{border-radius:9999px;align-items:center;gap:4px;padding:4px 10px;font-size:12px;font-weight:600;line-height:1.2;display:inline-flex}.ec-chip-success{background:var(--ec-chip-success-bg);color:var(--ec-chip-success-text)}.ec-chip-warning{background:var(--ec-chip-warning-bg);color:var(--ec-chip-warning-text)}.ec-chip-critical{background:var(--ec-chip-critical-bg);color:var(--ec-chip-critical-text)}.ec-chip-neutral{background:var(--ec-chip-neutral-bg);color:var(--ec-chip-neutral-text)}.ec-chip-sampled{background:var(--ec-chip-sampled-bg);color:var(--ec-chip-sampled-text)}.ec-link{color:var(--ec-brand-deep,var(--ec-brand));text-underline-offset:3px;font-weight:600;text-decoration-thickness:1px;transition:color .2s,text-decoration-color .2s}.ec-link:hover{color:var(--ec-brand);text-decoration:underline;-webkit-text-decoration-color:var(--ec-brand);-webkit-text-decoration-color:var(--ec-brand);-webkit-text-decoration-color:var(--ec-brand);text-decoration-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-link:hover{-webkit-text-decoration-color:color-mix(in srgb, var(--ec-brand) 45%, transparent);-webkit-text-decoration-color:color-mix(in srgb, var(--ec-brand) 45%, transparent);-webkit-text-decoration-color:color-mix(in srgb, var(--ec-brand) 45%, transparent);text-decoration-color:color-mix(in srgb, var(--ec-brand) 45%, transparent)}}.ec-link-muted{color:var(--ec-text-secondary);font-weight:500;transition:color .2s}.ec-link-muted:hover{color:var(--ec-text-primary)}.ec-modal-backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0000008c}.ec-card-lift{transition:transform .3s cubic-bezier(.4,0,.2,1),box-shadow .3s cubic-bezier(.4,0,.2,1)}.ec-card-lift:hover{box-shadow:var(--ec-card-hover-shadow);transform:translateY(-4px)}.ec-pill{min-height:var(--ec-touch-min,44px);border:1px solid var(--ec-border);background:var(--ec-surface);color:var(--ec-text-primary);cursor:pointer;border-radius:9999px;justify-content:center;align-items:center;gap:6px;padding:8px 16px;font-size:14px;font-weight:600;line-height:1.2;transition:all .2s cubic-bezier(.4,0,.2,1);display:inline-flex}.ec-pill:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-pill:hover{border-color:color-mix(in srgb, var(--ec-brand) 30%, transparent)}}.ec-pill:hover{background:var(--ec-brand-muted)}.ec-pill:active{filter:brightness(.95);transform:scale(.98)}.ec-input{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-button);width:100%;color:var(--ec-text-primary);outline:none;padding:14px 16px;font-size:16px;line-height:1.4;transition:border-color .2s cubic-bezier(.4,0,.2,1),box-shadow .2s cubic-bezier(.4,0,.2,1)}.ec-input::placeholder{color:var(--ec-text-secondary)}.ec-input:focus{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-input:focus{border-color:color-mix(in srgb, var(--ec-brand) 50%, transparent)}}.ec-input:focus{box-shadow:0 0 0 4px var(--ec-brand-muted)}.ec-label-tech{font-family:var(--font-mono);letter-spacing:.22em;text-transform:uppercase;color:var(--ec-brand-deep,var(--ec-brand));align-items:center;gap:8px;font-size:12px;font-weight:500;display:inline-flex}.ec-label-tech:before{content:"";background:var(--ec-brand-deep,var(--ec-brand));width:5px;height:5px;box-shadow:0 0 8px var(--ec-brand);border-radius:50%}@supports (color:color-mix(in lab, red, red)){.ec-label-tech:before{box-shadow:0 0 8px color-mix(in srgb, var(--ec-brand) 40%, transparent)}}.ec-footer-band .ec-label-tech:before{background:var(--ec-accent-light,#e9b8b3);box-shadow:none}.ec-label-tech-cyan{color:var(--ec-chip-info-text)}.ec-label-tech-cyan:before{background:var(--ec-chip-info-text);box-shadow:0 0 10px var(--ec-chip-info-text)}.ec-label-tech-violet{color:#a78bfa}.ec-label-tech-violet:before{background:#a78bfa;box-shadow:0 0 10px #a78bfa}.ec-label-tech-orange{color:var(--ec-chip-warning-text)}.ec-label-tech-orange:before{background:var(--ec-chip-warning-text);box-shadow:0 0 10px var(--ec-chip-warning-text)}.ec-banner{border-radius:var(--ec-radius-card);border:1px solid var(--ec-border);background:var(--ec-surface);align-items:flex-start;gap:12px;padding:16px;display:flex}.ec-banner-success{border-color:var(--ec-banner-success-border);background:var(--ec-banner-success-bg);box-shadow:0 0 24px var(--ec-banner-success-border)}@supports (color:color-mix(in lab, red, red)){.ec-banner-success{box-shadow:0 0 24px color-mix(in srgb, var(--ec-banner-success-border) 25%, transparent)}}.ec-banner-warning{border-color:var(--ec-banner-warning-border);background:var(--ec-banner-warning-bg)}.ec-banner-info{border-color:var(--ec-banner-info-border);background:var(--ec-banner-info-bg)}.ec-banner__title{font-size:14px;font-weight:600;line-height:1.4}.ec-banner__meta{font-family:var(--font-mono);margin-top:2px;font-size:12px;line-height:1.5}.ec-banner-success .ec-banner__title{color:var(--ec-banner-success-title)}.ec-banner-success .ec-banner__meta,.ec-banner-success .ec-banner__icon{color:var(--ec-banner-success-meta)}.ec-banner-warning .ec-banner__title{color:var(--ec-banner-warning-title)}.ec-banner-warning .ec-banner__meta,.ec-banner-warning .ec-banner__icon{color:var(--ec-banner-warning-meta)}.ec-banner-info .ec-banner__title{color:var(--ec-banner-info-title)}.ec-banner-info .ec-banner__meta,.ec-banner-info .ec-banner__icon{color:var(--ec-banner-info-meta)}.ec-highlight-success{border-radius:var(--ec-radius-card);border:1px solid var(--ec-banner-success-border);background:var(--ec-banner-success-bg);color:var(--ec-banner-success-meta);box-shadow:0 0 24px var(--ec-banner-success-border);padding:14px;font-size:14px;line-height:1.5}@supports (color:color-mix(in lab, red, red)){.ec-highlight-success{box-shadow:0 0 24px color-mix(in srgb, var(--ec-banner-success-border) 20%, transparent)}}.ec-highlight-success strong{color:var(--ec-banner-success-title);font-weight:600}.ec-score-display{font-family:var(--font-display,"Newsreader", Georgia, serif);letter-spacing:-.03em;justify-content:center;align-items:baseline;gap:.12em;font-size:clamp(3.25rem,10vw,5.5rem);font-weight:400;line-height:1;display:inline-flex}.ec-score-display__earned{color:var(--ec-brand);-webkit-text-fill-color:currentColor;background:0 0}.ec-score-display--success .ec-score-display__earned{color:var(--ec-chip-success-text)}.ec-score-display--warning .ec-score-display__earned{color:var(--ec-chip-warning-text)}.ec-score-display--critical .ec-score-display__earned{color:var(--ec-chip-critical-text)}.ec-score-display__slash,.ec-score-display__total{color:var(--ec-text-secondary);letter-spacing:-.02em;font-size:.72em;font-weight:600}.ec-score-display__caption{font-family:var(--font-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--ec-text-secondary);margin-top:.75rem;font-size:.8125rem;font-weight:500}.ec-wordmark{font-family:var(--font-display,"Newsreader", Georgia, serif);letter-spacing:-.02em;color:var(--ec-text-primary);cursor:pointer;background:0 0;border:none;padding:0;font-size:23px;font-weight:600;line-height:1;text-decoration:none;transition:opacity .16s}.ec-wordmark:hover{opacity:.82}.ec-wordmark-dot{color:var(--ec-brand);font-style:normal;transition:text-shadow .2s}.ec-wordmark:hover .ec-wordmark-dot{text-shadow:0 0 14px var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-wordmark:hover .ec-wordmark-dot{text-shadow:0 0 14px color-mix(in srgb, var(--ec-brand) 55%, transparent)}}.ec-nav-wrap{z-index:var(--ec-z-sticky,50);--ec-nav-height:calc(82px + env(safe-area-inset-top,0px));--ec-nav-accent:var(--ec-brand);box-shadow:none;-webkit-backdrop-filter:none;padding:clamp(8px,1.4vw,14px) clamp(10px,2.2vw,22px) 0;padding-top:calc(clamp(8px, 1.4vw, 14px) + env(safe-area-inset-top,0px));will-change:transform;background:0 0;border:none;position:sticky;top:0;overflow:visible}.ec-nav-wrap--auto-hide{transition:transform .32s cubic-bezier(.4,0,.2,1),opacity .24s,box-shadow .24s,background .24s,border-color .24s,margin .24s,border-radius .24s}.ec-nav-wrap--hidden{opacity:0;pointer-events:none;transform:translateY(-108%)}.ec-nav-wrap--scrolled .ec-nav{background:var(--ec-surface);padding-block:7px}@supports (color:color-mix(in lab, red, red)){.ec-nav-wrap--scrolled .ec-nav{background:color-mix(in srgb, var(--ec-surface) 94%, transparent)}}.ec-nav-wrap--scrolled .ec-nav{box-shadow:inset 0 1px #ffffff6b,0 18px 42px -18px #12161e5c,0 6px 16px -10px #12161e33}@media (prefers-reduced-motion:reduce){.ec-nav-wrap--auto-hide{transition:none}.ec-nav-wrap--hidden{opacity:1;pointer-events:auto;transform:none}}.ec-nav-wrap--transparent{background:0 0}.ec-nav-wrap--transparent .ec-nav-link--active{background:var(--ec-nav-accent,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.ec-nav-wrap--transparent .ec-nav-link--active{background:color-mix(in srgb, var(--ec-nav-accent,var(--ec-brand)) 18%, transparent)}}.ec-nav-right--frost :is(.ec-nav-signin,a.ec-btn-ghost,.ec-nav-burger){background:var(--ec-surface)}@supports (color:color-mix(in lab, red, red)){.ec-nav-right--frost :is(.ec-nav-signin,a.ec-btn-ghost,.ec-nav-burger){background:color-mix(in srgb, var(--ec-surface) 50%, transparent)}}.ec-nav-right--frost :is(.ec-nav-signin,a.ec-btn-ghost,.ec-nav-burger){-webkit-backdrop-filter:blur(14px)saturate(1.35);border-color:var(--ec-border)}@supports (color:color-mix(in lab, red, red)){.ec-nav-right--frost :is(.ec-nav-signin,a.ec-btn-ghost,.ec-nav-burger){border-color:color-mix(in srgb, var(--ec-border) 40%, transparent)}}.ec-nav-right a.ec-btn-primary,.ec-nav-right a.ec-btn-warm{-webkit-backdrop-filter:none;border-color:#0000}.ec-nav-right a.ec-btn-primary{background:var(--ec-brand);color:var(--ec-on-brand-text);box-shadow:var(--ec-btn-glow)}.ec-nav-right a.ec-btn-warm{background:var(--ec-accent-warm-soft);color:var(--ec-accent-warm-deep);border-color:var(--ec-accent-warm-border)}.ec-nav-right a.ec-btn-primary:hover:not([data-loading=true]){background:var(--ec-brand-deep,#8f1f1c);color:var(--ec-on-brand-text)}.ec-nav-right a.ec-btn-primary.ec-btn-primary--sm{box-shadow:var(--ec-btn-glow);white-space:nowrap}.ec-nav-utils{flex-shrink:0;align-items:center;gap:2px;display:inline-flex}.ec-nav-utils--frost{box-shadow:none;-webkit-backdrop-filter:none;background:0 0;border:none;padding:0}.ec-nav-utils--frost .ec-cmdk-btn,.ec-nav-utils--frost .ec-theme-flip{-webkit-backdrop-filter:none;background:0 0;border-color:#0000}.ec-nav-utils--frost .ec-cmdk-btn:hover,.ec-nav-utils--frost .ec-theme-flip:hover,.ec-nav-utils--frost .notif-bell:hover{background:var(--ec-text-primary)}@supports (color:color-mix(in lab, red, red)){.ec-nav-utils--frost .ec-cmdk-btn:hover,.ec-nav-utils--frost .ec-theme-flip:hover,.ec-nav-utils--frost .notif-bell:hover{background:color-mix(in srgb, var(--ec-text-primary) 6%, transparent)}}.ec-nav-utils--frost .notif-bell{border-radius:999px;place-items:center;width:34px;height:34px;padding:0;display:grid}.ec-nav-right--frost .ec-nav-signin{border:1px solid var(--ec-border);border-radius:999px;padding:8px 14px}@supports (color:color-mix(in lab, red, red)){.ec-nav-right--frost .ec-nav-signin{border:1px solid color-mix(in srgb, var(--ec-border) 40%, transparent)}}.ec-nav-wrap--tone-learn{--ec-nav-accent:var(--ec-accent-warm)}.ec-nav-wrap--tone-discuss{--ec-nav-accent:var(--ec-acc-violet)}.ec-nav-wrap--tone-mark{--ec-nav-accent:var(--ec-c-teal)}.ec-nav-wrap--layout-discuss .ec-nav{gap:8px}.ec-cta-label--short{display:none}@media (min-width:901px){.ec-nav{grid-template-columns:auto minmax(0,1fr) auto;grid-template-areas:"brand nav actions";align-items:center;column-gap:12px;padding-block:8px;display:grid}.ec-nav-brand{z-index:2;grid-area:brand;justify-self:start;min-width:0}.ec-nav-links{z-index:3;grid-area:nav;justify-self:center;min-width:0;max-width:100%;position:static;top:auto;left:auto;overflow:visible;transform:none}.ec-nav-right{z-index:2;flex-wrap:nowrap;grid-area:actions;justify-self:end;gap:5px;min-width:0;margin-left:0}@media (max-width:1279px){.ec-cmdk-btn span:not(.sr-only),.ec-cmdk-btn kbd{display:none}.ec-cmdk-btn{justify-content:center;width:36px;height:36px;padding:0}.ec-nav-link{padding:6px 11px;font-size:13.5px}.ec-cta-label--full{display:none}.ec-cta-label--short{display:inline}}@media (max-width:1199px){.ec-nav-right a.ec-btn-warm,.ec-nav-right a.ec-btn-ghost--sm:not(.ec-nav-signin){display:none!important}}@media (max-width:1099px){.ec-nav-context{display:none}}.ec-nav-links{margin-inline:0}.ec-nav-wrap--layout-discuss .ec-cmdk-btn span:not(.sr-only),.ec-nav-wrap--layout-discuss .ec-cmdk-btn kbd{display:none}.ec-nav-wrap--layout-discuss .ec-cmdk-btn{justify-content:center;width:36px;height:36px;padding:0}.ec-nav-wrap--layout-discuss .ec-btn-ghost--sm,.ec-nav-wrap--layout-discuss .ec-btn-primary--sm{padding-inline:14px;font-size:13.5px}.ec-nav-wrap--layout-discuss .ec-nav-signin{padding:6px 10px;font-size:15px}}@media (min-width:901px) and (max-width:1279px){.ec-nav-wrap--layout-discuss .ec-cta-label--full{display:none}.ec-nav-wrap--layout-discuss .ec-cta-label--short{display:inline}}@media (min-width:1280px){.ec-nav-wrap--layout-discuss .ec-cmdk-btn span:not(.sr-only),.ec-nav-wrap--layout-discuss .ec-cmdk-btn kbd{display:inline}.ec-nav-wrap--layout-discuss .ec-cmdk-btn{width:auto;height:auto;padding:8px 14px}}@media (max-width:900px){.ec-nav-context{flex-shrink:1;min-width:0;max-width:min(36vw,132px);padding:4px 9px;font-size:12px;display:inline-flex}.ec-nav-wrap--layout-discuss .ec-nav-context{max-width:min(28vw,108px)}.ec-nav-wrap--layout-discuss .ec-cmdk-btn{display:none!important}.ec-nav-wrap--layout-discuss .ec-theme-flip{display:none}.ec-nav-wrap--layout-discuss .ec-nav-right{gap:4px}.ec-nav-wrap--layout-discuss .ec-nav-cta-compact{max-width:34vw;padding-inline:10px!important;font-size:12px!important}.ec-nav-context-label{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.ec-nav-context-glyph{flex-shrink:0;font-size:13px}.ec-nav-brand{flex:auto;min-width:0;overflow:hidden}}@media (max-width:480px){.ec-nav-wrap--layout-discuss .ec-nav-context,.ec-nav-wrap--layout-discuss .ec-nav-right>a.ec-btn-ghost--sm:not(.ec-nav-signin){display:none}.ec-nav-wrap--layout-discuss .ec-cmdk-btn{justify-content:center;width:36px;height:36px;padding:0}.ec-nav-wrap--layout-discuss .ec-cmdk-btn span:not(.sr-only),.ec-nav-wrap--layout-discuss .ec-cmdk-btn kbd{display:none}.ec-nav-wrap--layout-discuss .ec-nav{gap:6px;padding-inline:12px}.ec-nav-wrap--layout-discuss .ec-btn-primary--sm{padding-inline:12px;font-size:13px}}@media (max-width:900px){.ec-nav-wrap--auto-hide.ec-nav-wrap--hidden{opacity:1;pointer-events:auto;transform:none}}.ec-nav{max-width:var(--ec-maxw,1200px);background:var(--ec-surface);border-radius:20px;flex-wrap:nowrap;justify-content:space-between;align-items:center;gap:12px;margin:0 auto;padding:9px 16px;display:flex}@supports (color:color-mix(in lab, red, red)){.ec-nav{background:color-mix(in srgb, var(--ec-surface) 85%, transparent)}}.ec-nav{-webkit-backdrop-filter:blur(22px)saturate(1.6);border:1px solid var(--ec-nav-accent,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.ec-nav{border:1px solid color-mix(in srgb, var(--ec-nav-accent,var(--ec-brand)) 24%, var(--ec-border))}}.ec-nav{box-shadow:inset 0 1px 0 #ffffff73, 0 0 10px -1px var(--ec-nav-accent,var(--ec-brand)), 0 14px 34px -18px var(--ec-nav-accent,var(--ec-brand)), 0 4px 12px -8px #12161e29}@supports (color:color-mix(in lab, red, red)){.ec-nav{box-shadow:inset 0 1px 0 #ffffff73, 0 0 10px -1px color-mix(in srgb, var(--ec-nav-accent,var(--ec-brand)) 18%, transparent), 0 14px 34px -18px color-mix(in srgb, var(--ec-nav-accent,var(--ec-brand)) 24%, #12161e4d), 0 4px 12px -8px #12161e29}}.ec-nav{transition:box-shadow .24s,background .24s,border-color .24s}.ec-wordmark-link:active .ec-wordmark,.ec-wordmark-link[data-loading=true] .ec-wordmark{opacity:.72}.ec-wordmark-link[data-loading=true] .ec-wordmark-dot{animation:.52s ease-in-out infinite ec-wordmark-pulse}@keyframes ec-wordmark-pulse{0%,to{text-shadow:0 0 8px color-mix(in srgb, var(--ec-brand) 35%, transparent)}50%{text-shadow:0 0 18px color-mix(in srgb, var(--ec-brand) 75%, transparent)}}.ec-nav-brand{flex-shrink:0;align-items:center;gap:10px;min-width:0;display:flex}.ec-nav-context{font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--ec-nav-accent,var(--ec-brand));border-radius:999px;align-items:center;gap:6px;padding:5px 11px;font-size:10.5px;font-weight:700;text-decoration:none;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.ec-nav-context{color:color-mix(in srgb, var(--ec-nav-accent,var(--ec-brand)) 88%, var(--ec-text-primary))}}.ec-nav-context{background:var(--ec-nav-accent,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.ec-nav-context{background:color-mix(in srgb, var(--ec-nav-accent,var(--ec-brand)) 11%, transparent)}}.ec-nav-context{border:1px solid var(--ec-nav-accent,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.ec-nav-context{border:1px solid color-mix(in srgb, var(--ec-nav-accent,var(--ec-brand)) 24%, transparent)}}.ec-nav-context{white-space:nowrap;transition:background .15s,border-color .15s,color .15s}.ec-nav-context-glyph{font-size:13px;line-height:1}.ec-nav-context-label{text-overflow:ellipsis;max-width:18ch;overflow:hidden}.ec-nav-context:hover{filter:brightness(1.05)}.ec-nav-links{box-shadow:none;background:0 0;border:none;align-items:center;gap:2px;padding:0;display:none}.ec-nav-link{font-family:var(--font-sans,system-ui, sans-serif);letter-spacing:.01em;color:var(--ec-text-secondary);cursor:pointer;background:0 0;border:none;border-radius:999px;padding:8px 14px;font-size:14px;font-weight:600;text-decoration:none;transition:color .16s,background .16s,transform .12s;position:relative}.ec-nav-link:hover{color:var(--ec-text-primary);background:var(--ec-text-primary)}@supports (color:color-mix(in lab, red, red)){.ec-nav-link:hover{background:color-mix(in srgb, var(--ec-text-primary) 6%, transparent)}}.ec-nav-link--active{color:var(--ec-nav-accent,var(--ec-brand));background:var(--ec-nav-accent,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.ec-nav-link--active{background:color-mix(in srgb, var(--ec-nav-accent,var(--ec-brand)) 9%, transparent)}}.ec-nav-link--active:after{content:"";background:var(--ec-nav-accent,var(--ec-brand));border-radius:2px;height:2px;display:block;position:absolute;bottom:4px;left:14px;right:14px}.ec-nav-link:focus-visible{outline:2px solid var(--ec-nav-accent,var(--ec-brand));outline-offset:5px;color:var(--ec-text-primary);border-radius:3px}.ec-nav-link[data-loading=true],.ec-nav-context[data-loading=true]{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-nav-link[data-loading=true],.ec-nav-context[data-loading=true]{background:color-mix(in srgb, var(--ec-brand) 14%, transparent)}}.ec-nav-link[data-loading=true],.ec-nav-context[data-loading=true]{color:var(--ec-text-primary)}.ec-nav-right{flex-shrink:0;align-items:center;gap:8px;min-width:0;margin-left:auto;display:flex}.ec-theme-flip{border:1px solid var(--ec-border);width:36px;height:36px;color:var(--ec-text-secondary);cursor:pointer;background:0 0;border-radius:999px;place-items:center;font-size:15px;transition:border-color .15s,color .15s;display:grid}.ec-theme-flip:hover{border-color:var(--ec-nav-accent,var(--ec-brand));color:var(--ec-nav-accent,var(--ec-brand))}.ec-cmdk-btn{border:1px solid var(--ec-border);background:var(--ec-surface);cursor:pointer;color:var(--ec-text-faint);font-family:var(--font-sans);border-radius:999px;align-items:center;gap:8px;padding:8px 14px;font-size:13.5px;transition:border-color .15s,color .15s;display:none}.ec-cmdk-btn:hover{border-color:var(--ec-nav-accent,var(--ec-brand));color:var(--ec-nav-accent,var(--ec-brand))}.ec-cmdk-btn kbd{font-family:var(--font-mono);border:1px solid var(--ec-border);background:var(--ec-bg-soft);border-radius:5px;padding:1px 5px;font-size:10.5px}.ec-nav-burger{border:1px solid var(--ec-border);width:44px;height:44px;color:var(--ec-text-primary);cursor:pointer;z-index:1;touch-action:manipulation;background:0 0;border-radius:10px;flex-shrink:0;place-items:center;font-size:17px;display:none;position:relative}.ec-nav-cta-compact{text-overflow:ellipsis;white-space:nowrap;flex-shrink:0;max-width:42vw;min-height:36px;overflow:hidden;padding:8px 14px!important;font-size:13px!important}.ec-nav-wrap--menu-open{z-index:221}.ec-nav-wrap--menu-open .ec-nav{z-index:1;position:relative}.ec-nav-wrap--menu-open .ec-nav-burger{z-index:2;position:relative}body.ec-mobile-menu-open .notif-dropdown{display:none}.ec-nav-mobile-backdrop{z-index:218;cursor:pointer;background:var(--ec-ink,#1a1a18);border:none;margin:0;padding:0;position:fixed;inset:0}@supports (color:color-mix(in lab, red, red)){.ec-nav-mobile-backdrop{background:color-mix(in srgb, var(--ec-ink,#1a1a18) 42%, transparent)}}.ec-nav-mobile-backdrop{-webkit-backdrop-filter:blur(3px);animation:.18s ec-nav-backdrop-in}@keyframes ec-nav-backdrop-in{0%{opacity:0}to{opacity:1}}.ec-nav-mobile-sheet{z-index:219;bottom:0;left:0;right:0;top:var(--ec-nav-height,calc(72px + env(safe-area-inset-top,0px)));overscroll-behavior:contain;-webkit-overflow-scrolling:touch;background:var(--ec-canvas);border-top:1px solid var(--ec-border);box-shadow:0 -12px 40px var(--ec-ink,#000);position:fixed;overflow-y:auto}@supports (color:color-mix(in lab, red, red)){.ec-nav-mobile-sheet{box-shadow:0 -12px 40px color-mix(in srgb, var(--ec-ink,#000) 12%, transparent)}}.ec-nav-mobile-sheet{flex-direction:column;animation:.22s cubic-bezier(.22,1,.36,1) ec-nav-sheet-in;display:flex}.ec-nav-mobile-sheet-head{border-bottom:1px solid var(--ec-border);z-index:2;background:var(--ec-canvas);justify-content:space-between;align-items:center;gap:12px;padding:12px 20px 8px;display:flex;position:sticky;top:0}@supports (color:color-mix(in lab, red, red)){.ec-nav-mobile-sheet-head{background:color-mix(in srgb, var(--ec-canvas) 94%, transparent)}}.ec-nav-mobile-sheet-head{-webkit-backdrop-filter:blur(12px)}.ec-nav-mobile-sheet-title{font-family:var(--font-display,"Newsreader", Georgia, serif);color:var(--ec-text-primary);margin:0;font-size:20px;font-weight:600}.ec-nav-mobile-sheet-close{width:var(--ec-touch-min,44px);height:var(--ec-touch-min,44px);border:1px solid var(--ec-border);background:var(--ec-surface);color:var(--ec-text-primary);cursor:pointer;border-radius:10px;flex-shrink:0;place-items:center;font-size:18px;display:grid}.ec-nav-mobile-section-label{font-family:var(--font-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ec-text-faint);margin:12px 0 4px;padding:0 4px;font-size:10.5px;font-weight:700}.ec-nav-mobile-footer{padding:12px 0 calc(8px + env(safe-area-inset-bottom,0px));border-top:1px solid var(--ec-border);margin-top:8px}.ec-nav-mobile-footer-row{min-height:var(--ec-touch-min,44px);justify-content:space-between;align-items:center;gap:12px;padding:0 4px;display:flex}.ec-nav-mobile-footer-label{color:var(--ec-text-secondary);font-size:14px;font-weight:600}.ec-nav-mobile-theme{width:var(--ec-touch-min,44px);height:var(--ec-touch-min,44px)}@keyframes ec-nav-sheet-in{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.ec-nav-mobile-context{padding:12px 20px 0}.ec-nav-mobile-context .ec-nav-context{width:fit-content;max-width:none;font-size:13px}.ec-nav-mobile-secondary{min-height:var(--ec-touch-min,44px);text-align:center;border-radius:12px;justify-content:center;align-items:center;margin-bottom:4px;display:flex;border-bottom:none!important}.ec-nav-mobile-auth{border-top:1px solid var(--ec-border);flex-direction:column;gap:2px;margin-top:8px;padding-top:12px;display:flex}.ec-nav-mobile-auth a{min-height:var(--ec-touch-min,44px);font-family:var(--font-display,"Newsreader", Georgia, serif);color:var(--ec-text-primary);align-items:center;padding:11px 4px;font-size:19px;text-decoration:none;display:flex}.ec-nav-mobile-auth a:hover{color:var(--ec-brand)}.ec-nav-mobile-link{min-height:var(--ec-touch-min,44px);border-bottom:1px solid var(--ec-border);font-family:var(--font-display,"Newsreader", Georgia, serif);color:var(--ec-text-primary);align-items:center;padding:11px 4px;font-size:19px;text-decoration:none;display:flex}.ec-nav-mobile-link--active,.ec-nav-mobile-link.active{color:var(--ec-brand);font-weight:600}.ec-nav-mobile-menu{padding:8px 20px calc(20px + env(safe-area-inset-bottom,0px));background:0 0;border-top:none;flex-direction:column;display:none}.ec-nav-mobile-menu a,.ec-nav-mobile-menu button{text-align:left;font-family:var(--font-display,"Newsreader", Georgia, serif);color:var(--ec-text-primary);border:none;border-bottom:1px solid var(--ec-border);cursor:pointer;background:0 0;padding:11px 4px;font-size:19px;text-decoration:none}.ec-nav-mobile-menu>:last-child{border-bottom:none}.ec-nav-signin{font-family:var(--font-display,"Newsreader", Georgia, serif);font-size:16.5px;display:none}.ec-avatar-btn{border:1.5px solid var(--ec-brand-border);background:var(--ec-brand-muted);width:36px;height:36px;color:var(--ec-brand);font-family:var(--ec-font-handwriting);cursor:pointer;border-radius:50%;place-items:center;font-size:19px;text-decoration:none;display:none}.ec-avatar-btn--loading{background:var(--ec-surface-raised);border-color:var(--ec-border);color:#0000;animation:1.2s ease-in-out infinite ec-pulse}@keyframes ec-pulse{0%,to{opacity:.55}50%{opacity:1}}@media (min-width:901px){.ec-nav-links{display:flex}.ec-cmdk-btn,.ec-nav-signin{display:inline-flex}}@media (max-width:900px){.ec-nav{padding:7px 10px 7px 14px}.ec-nav-burger{display:grid}.ec-nav-mobile-menu--open{display:flex}.ec-nav-utils .ec-cmdk-btn,.ec-nav-utils .ec-theme-flip{display:none!important}}.ec-btn-primary--sm{box-shadow:none;padding:9px 20px;font-size:14.5px}.ec-btn-ghost{color:var(--ec-text-primary);min-height:var(--ec-touch-min,44px);border-radius:var(--ec-radius-pill,999px);border:1.5px solid var(--ec-border-strong);white-space:nowrap;cursor:pointer;background:0 0;justify-content:center;align-items:center;gap:8px;padding:13px 26px;font-size:16px;font-weight:500;line-height:1.2;transition:transform .2s cubic-bezier(.4,0,.2,1);display:inline-flex}.ec-btn-ghost:hover:not(:disabled){transform:translateY(-1px)}.ec-btn-ghost--sm{padding:8px 18px;font-size:14.5px}.ec-btn-underline{font-family:var(--font-display,"Newsreader", Georgia, serif);color:var(--ec-text-primary);cursor:pointer;border:none;border-bottom:1.5px solid var(--ec-brand);background:0 0;padding:0 0 2px;font-size:17px;text-decoration:none;transition:color .15s}.ec-btn-underline:hover{color:var(--ec-brand)}.ec-chip-ms{font-family:var(--font-mono);border-radius:999px;align-items:center;gap:6px;padding:4px 12px;font-size:12px;font-weight:600;line-height:1.2;display:inline-flex}.ec-chip-ms--ok{color:var(--green-on-tint,var(--ec-brand));background:var(--ec-brand-muted)}.ec-chip-ms--no{color:var(--ec-ink-crimson);background:var(--ec-chip-critical-bg)}.ec-chip-ms--warn{color:var(--ec-chip-warning-text);background:var(--ec-chip-warning-bg)}.ec-chip-ms--dim{color:var(--ec-text-faint);background:var(--ec-bg-soft)}.ec-chip-ms--outline{border:1px solid var(--ec-border);color:var(--ec-text-secondary);background:0 0}.ec-exam-sheet{background:var(--ec-paper);border:1.5px solid var(--ec-border-strong);box-shadow:var(--ec-shadow-hard);color:var(--ec-text-primary);border-radius:2px;padding:24px 26px 18px;position:relative}.ec-exam-sheet__head{font-family:var(--font-mono);color:var(--ec-text-faint);border-bottom:1px solid var(--ec-paper-rule);justify-content:space-between;gap:12px;margin-bottom:4px;padding-bottom:9px;font-size:11.5px;display:flex}.ec-exam-sheet__line{border-bottom:1px solid var(--ec-paper-rule);justify-content:space-between;align-items:baseline;gap:12px;padding:8px 0 7px;display:flex;position:relative}.ec-exam-sheet__line--interactive{cursor:pointer}.ec-exam-sheet__line--active{background:var(--ec-brand-muted)}.ec-exam-sheet__work{font-family:var(--ec-font-handwriting,var(--font-caveat,"Caveat", cursive));letter-spacing:.01em;color:var(--ec-pen);font-size:23px;font-weight:600;line-height:1.26}.ec-mark-stamp{font-family:var(--font-mono);white-space:nowrap;border-radius:999px;flex-shrink:0;padding:2px 9px;font-size:12.5px;font-weight:700;animation:.26s cubic-bezier(.34,1.4,.64,1) both ec-stamp-in;transform:rotate(-3deg)}.ec-mark-stamp--ok{color:var(--ec-brand);border:2px solid var(--ec-brand-border);background:var(--ec-brand-muted)}.ec-mark-stamp--no{color:var(--ec-ink-crimson);border:2px solid var(--ec-ink-crimson)}@supports (color:color-mix(in lab, red, red)){.ec-mark-stamp--no{border:2px solid color-mix(in srgb, var(--ec-ink-crimson) 55%, transparent)}}.ec-mark-stamp--no{background:var(--ec-chip-critical-bg)}.ec-exam-note--red{font-family:var(--ec-font-handwriting,var(--font-caveat,"Caveat", cursive));color:var(--ec-ink-crimson);margin-top:4px;font-size:19px;font-weight:600;display:block;transform:rotate(-1.5deg)}.ec-exam-note--green{font-family:var(--ec-font-handwriting,var(--font-caveat,"Caveat", cursive));color:var(--ec-brand);margin-top:4px;font-size:19px;font-weight:600;display:block}.ec-exam-tally{background:var(--ec-brand);color:var(--ec-on-brand-text);font-family:var(--font-mono);padding:9px 13px;font-size:14px;font-weight:700;position:absolute;top:-16px;right:-14px;transform:rotate(4deg);box-shadow:3px 3px #00000038}.ec-scheme-cite{font-family:var(--font-mono);color:var(--ec-text-faint);background:var(--ec-bg-soft);border:1px dashed var(--ec-border);margin-top:12px;padding:9px 11px;font-size:11px;line-height:1.5}@keyframes ec-stamp-in{0%{transform:scale(1.12)rotate(-7deg)}to{transform:scale(1)rotate(-3deg)}}.ec-ink-circled{display:inline-block;position:relative}.ec-ink-circled svg{pointer-events:none;width:calc(100% + 40px);height:calc(100% + 24px);position:absolute;inset:-12px -20px;overflow:visible}.ec-ink-scribbled{display:inline-block;position:relative}.ec-ink-scribbled svg{pointer-events:none;width:calc(100% + 8px);height:14px;position:absolute;bottom:-9px;left:-4px;right:-4px;overflow:visible}.ec-margin-note{font-family:var(--ec-font-handwriting);color:var(--ec-brand);text-align:left;font-size:22px;line-height:1.15;position:absolute;transform:rotate(-5deg)}@media (max-width:900px){.ec-no-annot-mobile .ec-ink-circled svg,.ec-no-annot-mobile .ec-ink-scribbled svg,.ec-no-annot-mobile .ec-margin-note{display:none!important}}@media (prefers-reduced-motion:reduce){.ec-mark-stamp{animation:none}}.ec-ms-footer{border-top:1px solid var(--ec-border);background:var(--ec-bg-soft);color:var(--ec-text-primary);margin-top:110px}.ec-ms-footer__inner{max-width:var(--ec-maxw,1200px);grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;margin:0 auto;padding:48px 32px 36px;display:grid}.ec-ms-footer__label{font-family:var(--font-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--ec-text-faint);margin:0 0 14px;font-size:11.5px;font-weight:500}.ec-ms-footer__col{flex-direction:column;gap:9px;display:flex}.ec-ms-footer__col a{color:var(--ec-text-secondary);font-size:14.5px;text-decoration:none;transition:color .15s}.ec-ms-footer__col a:hover{color:var(--ec-brand)}.ec-ms-footer__lead{color:var(--ec-text-secondary);max-width:34ch;margin:0;font-size:15px;line-height:1.6}.ec-ms-footer__micro{font-family:var(--font-mono);letter-spacing:.08em;color:var(--ec-text-faint);margin:16px 0 0;font-size:11.5px}.ec-ms-footer__legal{max-width:var(--ec-maxw,1200px);color:var(--ec-text-faint);flex-wrap:wrap;justify-content:space-between;gap:16px;margin:0 auto;padding:0 32px 28px;font-size:12.5px;display:flex}.ec-ms-footer__legal-links{border-bottom:1px solid var(--ec-border);flex-wrap:wrap;flex-basis:100%;gap:16px;margin-bottom:4px;padding-bottom:14px;display:flex}.ec-ms-footer__legal-links a{color:var(--ec-text-secondary);font-weight:600;text-decoration:none}.ec-ms-footer__legal-links a:hover{color:var(--ec-brand)}@media (max-width:900px){.ec-ms-footer__inner{grid-template-columns:1fr 1fr;padding:40px 18px 28px}.ec-ms-footer__legal{flex-direction:column;padding:0 18px 24px}}@media (max-width:520px){.ec-ms-footer__inner{grid-template-columns:1fr}}.ec-tabbar{display:none}@media (max-width:900px){.ec-tabbar{z-index:70;background:var(--ec-canvas);grid-auto-columns:1fr;grid-auto-flow:column;display:grid;position:fixed;bottom:0;left:0;right:0}@supports (color:color-mix(in lab, red, red)){.ec-tabbar{background:color-mix(in srgb, var(--ec-canvas) 90%, transparent)}}.ec-tabbar{-webkit-backdrop-filter:blur(16px)saturate(1.4);border-top:1px solid var(--ec-border)}@supports (color:color-mix(in lab, red, red)){.ec-tabbar{border-top:1px solid color-mix(in srgb, var(--ec-border) 70%, transparent)}}.ec-tabbar{padding:6px 4px calc(6px + env(safe-area-inset-bottom,0px));box-shadow:0 -6px 24px -18px #00000080}.ec-tabbar a,.ec-tabbar .ec-tabbar-link,.ec-tabbar button{cursor:pointer;color:var(--ec-text-faint);background:0 0;border:none;flex-direction:column;align-items:center;gap:3px;min-height:52px;padding:4px 2px;text-decoration:none;display:flex}.ec-tabbar__glyph{width:46px;height:26px;color:var(--ec-text-secondary);border-radius:999px;place-items:center;transition:background .16s,color .16s;display:grid}.ec-tabbar__glyph svg{width:21px;height:21px}.ec-tabbar__label{font-family:var(--font-mono);letter-spacing:.07em;text-transform:uppercase;font-size:9.5px;transition:color .16s}.ec-tabbar a[aria-current=page],.ec-tabbar .ec-tabbar-link[aria-current=page],.ec-tabbar button[aria-current=page]{color:var(--ec-brand)}.ec-tabbar a[aria-current=page] .ec-tabbar__glyph,.ec-tabbar .ec-tabbar-link[aria-current=page] .ec-tabbar__glyph,.ec-tabbar button[aria-current=page] .ec-tabbar__glyph{background:var(--ec-brand-muted);color:var(--ec-brand)}}.ec-cmdk-btn,.ec-theme-flip,.ec-avatar-btn{min-width:44px;min-height:44px}@media (max-width:430px){.ec-nav-context{display:none}}.ec-card .text-hero{font-size:clamp(1.625rem,5vw,2.125rem);line-height:1.12}.ec-auth-link,.ec-auth-footer-link{min-height:var(--ec-touch-min,44px);align-items:center;padding-block:8px;display:inline-flex}.ec-auth-footer-link{justify-content:center}.ec-auth-shell{padding-top:calc(2.5rem + env(safe-area-inset-top,0px));padding-bottom:calc(2.5rem + env(safe-area-inset-bottom,0px))}@media (min-width:640px){.ec-auth-shell{padding-top:calc(3rem + env(safe-area-inset-top,0px));padding-bottom:calc(3rem + env(safe-area-inset-bottom,0px))}}.ms-ob-nav--stack{flex-direction:column;gap:12px;width:100%}.ms-ob-nav--stack .ec-btn-primary,.ms-ob-nav--stack .ec-btn-ghost,.ms-ob-nav--stack .ec-btn-underline,.ms-ob-nav--stack button{justify-content:center;width:100%;max-width:none}.ms-ob-subjects-scroll{overscroll-behavior:contain;max-height:min(42vh,320px);margin-top:24px;padding-right:4px;overflow-y:auto}.ms-lvl-tabs-scroll{-webkit-overflow-scrolling:touch;scrollbar-width:none;max-width:100%;margin-bottom:26px;overflow-x:auto}.ms-lvl-tabs-scroll::-webkit-scrollbar{display:none}.ms-lvl-tabs-scroll .ms-lvl-tabs{min-width:max-content;margin-bottom:0}.ec-page-back{margin-bottom:1rem}.ec-page-help-strip{border:1px solid var(--ec-border);background:var(--ec-surface-raised);border-radius:1rem;flex-wrap:wrap;justify-content:center;align-items:center;gap:.75rem 1.25rem;margin-top:3rem;padding:1rem 1.25rem;display:flex}@supports (color:color-mix(in lab, red, red)){.ec-page-help-strip{background:color-mix(in srgb, var(--ec-surface-raised) 88%, transparent)}}.ec-page-help-strip{text-align:center}.ec-page-help-strip__label{letter-spacing:.04em;text-transform:uppercase;color:var(--ec-text-faint);margin:0;font-size:.8125rem;font-weight:600}.ec-page-help-strip__links{flex-wrap:wrap;justify-content:center;align-items:center;gap:.5rem 1rem;display:flex}.ec-page-help-strip__links a{min-height:var(--ec-touch-min,44px);color:var(--ec-text-secondary);text-underline-offset:3px;align-items:center;padding-inline:.25rem;font-size:.9375rem;font-weight:500;text-decoration:underline;transition:color .15s;display:inline-flex}.ec-page-help-strip__links a:hover{color:var(--ec-brand)}.ms-pp-card,.ms-guide-grid a,.ec-card-interactive{min-height:var(--ec-touch-min,44px)}.ec-not-found-hint{color:var(--ec-text-secondary);margin-top:1.5rem;font-size:.875rem}.ec-not-found-hint kbd{border:1px solid var(--ec-border);background:var(--ec-surface-raised);min-width:1.5rem;font-family:var(--font-mono,ui-monospace, monospace);color:var(--ec-text-primary);border-radius:.375rem;justify-content:center;align-items:center;padding:.125rem .375rem;font-size:.75rem;font-weight:600;line-height:1.2;display:inline-flex}.ec-mark-intro-help{color:var(--ec-text-secondary);margin-bottom:1.5rem;font-size:.9375rem;line-height:1.55}.ec-mark-intro-help a{font-weight:500}.rc-vote-signin-hint{text-align:center;color:var(--ec-text-secondary);grid-column:1/-1;margin:0;padding-top:.25rem;font-size:.8125rem}.rc-vote-signin-hint a{color:var(--ec-brand);text-underline-offset:2px;font-weight:600;text-decoration:underline}.rc-error-alert{margin-top:.75rem}.ec-app-support-strip{margin-top:2.5rem}.rc-empty-actions{flex-wrap:wrap;justify-content:center;align-items:center;gap:.75rem;margin-top:1.25rem;display:flex}.ms-acct-support{grid-column:1/-1;margin-top:.5rem}.gradient-text{background:linear-gradient(120deg, var(--ec-brand-deep) 0%, var(--ec-c-phys) 42%, var(--ec-c-chem) 78%, var(--ec-accent-warm-deep) 100%);color:#0000;-webkit-background-clip:text;background-clip:text}.bento-grid{grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-rows:minmax(120px,auto);gap:16px;display:grid}@media (min-width:640px){.bento-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (min-width:1024px){.bento-grid{grid-template-columns:repeat(6,minmax(0,1fr))}}@keyframes slide-up-fade{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.animate-entry{animation:.4s cubic-bezier(.4,0,.2,1) backwards slide-up-fade}.stagger-1{animation-delay:60ms}.stagger-2{animation-delay:.12s}.stagger-3{animation-delay:.18s}.stagger-4{animation-delay:.24s}.stagger-5{animation-delay:.3s}.stagger-6{animation-delay:.36s}.stagger-7{animation-delay:.42s}.stagger-8{animation-delay:.48s}@keyframes brand-breathe{0%,to{opacity:1}50%{opacity:.82}}.brand-breathe{animation:3.2s ease-in-out infinite brand-breathe}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.animate-shimmer{background-size:200% 100%;animation:3s linear infinite shimmer}@keyframes shimmer-skeleton{0%{transform:translate(-100%)}to{transform:translate(100%)}}.animate-shimmer-skeleton{animation:1.6s infinite shimmer-skeleton}.tilt-perspective{perspective:1200px;transform-style:preserve-3d}}@layer utilities{.pointer-events-auto{pointer-events:auto}.pointer-events-none{pointer-events:none}.collapse{visibility:collapse}.invisible{visibility:hidden}.visible{visibility:visible}.sr-only{clip-path:inset(50%);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.absolute{position:absolute}.fixed{position:fixed}.relative{position:relative}.static{position:static}.sticky{position:sticky}.-inset-0\.5{inset:calc(var(--spacing) * -.5)}.inset-0{inset:calc(var(--spacing) * 0)}.inset-x-0{inset-inline:calc(var(--spacing) * 0)}.inset-y-0{inset-block:calc(var(--spacing) * 0)}.-top-1{top:calc(var(--spacing) * -1)}.-top-2{top:calc(var(--spacing) * -2)}.-top-10{top:calc(var(--spacing) * -10)}.-top-12{top:calc(var(--spacing) * -12)}.-top-16{top:calc(var(--spacing) * -16)}.-top-20{top:calc(var(--spacing) * -20)}.-top-24{top:calc(var(--spacing) * -24)}.top-0{top:calc(var(--spacing) * 0)}.top-1\.5{top:calc(var(--spacing) * 1.5)}.top-1\/2{top:50%}.top-2{top:calc(var(--spacing) * 2)}.top-3{top:calc(var(--spacing) * 3)}.top-4{top:calc(var(--spacing) * 4)}.top-5{top:calc(var(--spacing) * 5)}.top-9{top:calc(var(--spacing) * 9)}.top-10{top:calc(var(--spacing) * 10)}.top-24{top:calc(var(--spacing) * 24)}.top-\[calc\(3\.25rem\+env\(safe-area-inset-top\,0px\)\)\]{top:calc(3.25rem + env(safe-area-inset-top,0px))}.top-\[calc\(100\%\+0\.35rem\)\]{top:calc(100% + .35rem)}.top-full{top:100%}.-right-7{right:calc(var(--spacing) * -7)}.-right-12{right:calc(var(--spacing) * -12)}.-right-16{right:calc(var(--spacing) * -16)}.-right-24{right:calc(var(--spacing) * -24)}.right-0{right:calc(var(--spacing) * 0)}.right-1{right:calc(var(--spacing) * 1)}.right-2{right:calc(var(--spacing) * 2)}.right-3{right:calc(var(--spacing) * 3)}.right-4{right:calc(var(--spacing) * 4)}.right-5{right:calc(var(--spacing) * 5)}.right-full{right:100%}.-bottom-\[2px\]{bottom:-2px}.bottom-0{bottom:calc(var(--spacing) * 0)}.bottom-2{bottom:calc(var(--spacing) * 2)}.bottom-\[calc\(5rem\+env\(safe-area-inset-bottom\,0px\)\)\]{bottom:calc(5rem + env(safe-area-inset-bottom,0px))}.-left-10{left:calc(var(--spacing) * -10)}.-left-12{left:calc(var(--spacing) * -12)}.-left-\[calc\(0\.5rem\+1px\)\]{left:calc(-.5rem - 1px)}.left-0{left:calc(var(--spacing) * 0)}.left-1\/2{left:50%}.left-2{left:calc(var(--spacing) * 2)}.left-3{left:calc(var(--spacing) * 3)}.left-\[-9999px\]{left:-9999px}.left-\[11px\]{left:11px}.left-\[17px\]{left:17px}.left-full{left:100%}.isolate{isolation:isolate}.z-0{z-index:0}.z-10{z-index:10}.z-20{z-index:20}.z-50{z-index:50}.z-\[1\]{z-index:1}.z-\[55\]{z-index:55}.z-\[60\]{z-index:60}.z-\[61\]{z-index:61}.z-\[var\(--ec-z-modal\,250\)\]{z-index:var(--ec-z-modal,250)}.z-\[var\(--ec-z-toast\,100\)\]{z-index:var(--ec-z-toast,100)}.col-span-full{grid-column:1/-1}.row-4{grid-row:4}.container{width:100%}@media (min-width:40rem){.container{max-width:40rem}}@media (min-width:48rem){.container{max-width:48rem}}@media (min-width:64rem){.container{max-width:64rem}}@media (min-width:80rem){.container{max-width:80rem}}@media (min-width:96rem){.container{max-width:96rem}}.m-0{margin:calc(var(--spacing) * 0)}.m-3{margin:calc(var(--spacing) * 3)}.-mx-4{margin-inline:calc(var(--spacing) * -4)}.mx-auto{margin-inline:auto}.my-2{margin-block:calc(var(--spacing) * 2)}.my-3{margin-block:calc(var(--spacing) * 3)}.my-4{margin-block:calc(var(--spacing) * 4)}.my-5{margin-block:calc(var(--spacing) * 5)}.my-6{margin-block:calc(var(--spacing) * 6)}.my-8{margin-block:calc(var(--spacing) * 8)}.my-10{margin-block:calc(var(--spacing) * 10)}.ms-auto{margin-inline-start:auto}.mt-0{margin-top:calc(var(--spacing) * 0)}.mt-0\.5{margin-top:calc(var(--spacing) * .5)}.mt-1{margin-top:calc(var(--spacing) * 1)}.mt-1\.5{margin-top:calc(var(--spacing) * 1.5)}.mt-2{margin-top:calc(var(--spacing) * 2)}.mt-2\.5{margin-top:calc(var(--spacing) * 2.5)}.mt-3{margin-top:calc(var(--spacing) * 3)}.mt-4{margin-top:calc(var(--spacing) * 4)}.mt-5{margin-top:calc(var(--spacing) * 5)}.mt-6{margin-top:calc(var(--spacing) * 6)}.mt-7{margin-top:calc(var(--spacing) * 7)}.mt-8{margin-top:calc(var(--spacing) * 8)}.mt-10{margin-top:calc(var(--spacing) * 10)}.mt-12{margin-top:calc(var(--spacing) * 12)}.mt-14{margin-top:calc(var(--spacing) * 14)}.mt-16{margin-top:calc(var(--spacing) * 16)}.mt-auto{margin-top:auto}.-mr-0\.5{margin-right:calc(var(--spacing) * -.5)}.mr-1{margin-right:calc(var(--spacing) * 1)}.mr-1\.5{margin-right:calc(var(--spacing) * 1.5)}.mr-2{margin-right:calc(var(--spacing) * 2)}.mr-3{margin-right:calc(var(--spacing) * 3)}.mb-0{margin-bottom:calc(var(--spacing) * 0)}.mb-1{margin-bottom:calc(var(--spacing) * 1)}.mb-1\.5{margin-bottom:calc(var(--spacing) * 1.5)}.mb-2{margin-bottom:calc(var(--spacing) * 2)}.mb-2\.5{margin-bottom:calc(var(--spacing) * 2.5)}.mb-3{margin-bottom:calc(var(--spacing) * 3)}.mb-4{margin-bottom:calc(var(--spacing) * 4)}.mb-5{margin-bottom:calc(var(--spacing) * 5)}.mb-6{margin-bottom:calc(var(--spacing) * 6)}.mb-8{margin-bottom:calc(var(--spacing) * 8)}.mb-10{margin-bottom:calc(var(--spacing) * 10)}.mb-12{margin-bottom:calc(var(--spacing) * 12)}.mb-16{margin-bottom:calc(var(--spacing) * 16)}.-ml-0\.5{margin-left:calc(var(--spacing) * -.5)}.-ml-2{margin-left:calc(var(--spacing) * -2)}.ml-0\.5{margin-left:calc(var(--spacing) * .5)}.ml-1{margin-left:calc(var(--spacing) * 1)}.ml-1\.5{margin-left:calc(var(--spacing) * 1.5)}.ml-2{margin-left:calc(var(--spacing) * 2)}.ml-3{margin-left:calc(var(--spacing) * 3)}.ml-auto{margin-left:auto}.line-clamp-2{-webkit-line-clamp:2;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.line-clamp-3{-webkit-line-clamp:3;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.block{display:block}.contents{display:contents}.flex{display:flex}.grid{display:grid}.hidden{display:none}.inline{display:inline}.inline-block{display:inline-block}.inline-flex{display:inline-flex}.table{display:table}.aspect-\[4\/3\]{aspect-ratio:4/3}.h-0{height:calc(var(--spacing) * 0)}.h-0\.5{height:calc(var(--spacing) * .5)}.h-1{height:calc(var(--spacing) * 1)}.h-1\.5{height:calc(var(--spacing) * 1.5)}.h-2{height:calc(var(--spacing) * 2)}.h-2\.5{height:calc(var(--spacing) * 2.5)}.h-3{height:calc(var(--spacing) * 3)}.h-3\.5{height:calc(var(--spacing) * 3.5)}.h-4{height:calc(var(--spacing) * 4)}.h-5{height:calc(var(--spacing) * 5)}.h-6{height:calc(var(--spacing) * 6)}.h-7{height:calc(var(--spacing) * 7)}.h-8{height:calc(var(--spacing) * 8)}.h-9{height:calc(var(--spacing) * 9)}.h-10{height:calc(var(--spacing) * 10)}.h-11{height:calc(var(--spacing) * 11)}.h-12{height:calc(var(--spacing) * 12)}.h-14{height:calc(var(--spacing) * 14)}.h-16{height:calc(var(--spacing) * 16)}.h-20{height:calc(var(--spacing) * 20)}.h-24{height:calc(var(--spacing) * 24)}.h-32{height:calc(var(--spacing) * 32)}.h-36{height:calc(var(--spacing) * 36)}.h-40{height:calc(var(--spacing) * 40)}.h-48{height:calc(var(--spacing) * 48)}.h-56{height:calc(var(--spacing) * 56)}.h-64{height:calc(var(--spacing) * 64)}.h-80{height:calc(var(--spacing) * 80)}.h-96{height:calc(var(--spacing) * 96)}.h-\[2px\]{height:2px}.h-\[3px\]{height:3px}.h-\[18px\]{height:18px}.h-\[85vh\]{height:85vh}.h-\[88px\]{height:88px}.h-\[calc\(100\%-12px\)\]{height:calc(100% - 12px)}.h-auto{height:auto}.h-full{height:100%}.h-px{height:1px}.max-h-40{max-height:calc(var(--spacing) * 40)}.max-h-48{max-height:calc(var(--spacing) * 48)}.max-h-60{max-height:calc(var(--spacing) * 60)}.max-h-80{max-height:calc(var(--spacing) * 80)}.max-h-\[90dvh\]{max-height:90dvh}.max-h-\[480px\]{max-height:480px}.max-h-\[800px\]{max-height:800px}.max-h-\[min\(70dvh\,24rem\)\]{max-height:min(70dvh,24rem)}.min-h-\[2\.5rem\]{min-height:2.5rem}.min-h-\[12rem\]{min-height:12rem}.min-h-\[40px\]{min-height:40px}.min-h-\[44px\]{min-height:44px}.min-h-\[48px\]{min-height:48px}.min-h-\[52px\]{min-height:52px}.min-h-\[56px\]{min-height:56px}.min-h-\[60vh\]{min-height:60vh}.min-h-\[72px\]{min-height:72px}.min-h-\[88px\]{min-height:88px}.min-h-\[120px\]{min-height:120px}.min-h-\[140px\]{min-height:140px}.min-h-\[380px\]{min-height:380px}.min-h-\[calc\(100vh-4rem\)\]{min-height:calc(100vh - 4rem)}.min-h-dvh{min-height:100dvh}.min-h-full{min-height:100%}.min-h-screen{min-height:100vh}.w-0{width:calc(var(--spacing) * 0)}.w-0\.5{width:calc(var(--spacing) * .5)}.w-1\.5{width:calc(var(--spacing) * 1.5)}.w-1\/2{width:50%}.w-2{width:calc(var(--spacing) * 2)}.w-2\.5{width:calc(var(--spacing) * 2.5)}.w-2\/3{width:66.6667%}.w-2\/5{width:40%}.w-3{width:calc(var(--spacing) * 3)}.w-3\.5{width:calc(var(--spacing) * 3.5)}.w-3\/4{width:75%}.w-4{width:calc(var(--spacing) * 4)}.w-4\/6{width:66.6667%}.w-5{width:calc(var(--spacing) * 5)}.w-5\/6{width:83.3333%}.w-6{width:calc(var(--spacing) * 6)}.w-7{width:calc(var(--spacing) * 7)}.w-8{width:calc(var(--spacing) * 8)}.w-9{width:calc(var(--spacing) * 9)}.w-9\/12{width:75%}.w-10{width:calc(var(--spacing) * 10)}.w-11{width:calc(var(--spacing) * 11)}.w-11\/12{width:91.6667%}.w-12{width:calc(var(--spacing) * 12)}.w-14{width:calc(var(--spacing) * 14)}.w-16{width:calc(var(--spacing) * 16)}.w-20{width:calc(var(--spacing) * 20)}.w-24{width:calc(var(--spacing) * 24)}.w-28{width:calc(var(--spacing) * 28)}.w-32{width:calc(var(--spacing) * 32)}.w-36{width:calc(var(--spacing) * 36)}.w-40{width:calc(var(--spacing) * 40)}.w-48{width:calc(var(--spacing) * 48)}.w-56{width:calc(var(--spacing) * 56)}.w-64{width:calc(var(--spacing) * 64)}.w-72{width:calc(var(--spacing) * 72)}.w-80{width:calc(var(--spacing) * 80)}.w-\[3px\]{width:3px}.w-\[4\.5rem\]{width:4.5rem}.w-\[18px\]{width:18px}.w-\[80\%\]{width:80%}.w-auto{width:auto}.w-full{width:100%}.w-px{width:1px}.max-w-2xl{max-width:var(--container-2xl)}.max-w-3xl{max-width:var(--container-3xl)}.max-w-4xl{max-width:var(--container-4xl)}.max-w-5xl{max-width:var(--container-5xl)}.max-w-7xl{max-width:var(--container-7xl)}.max-w-\[10rem\]{max-width:10rem}.max-w-\[42rem\]{max-width:42rem}.max-w-\[100vw\]{max-width:100vw}.max-w-\[140px\]{max-width:140px}.max-w-\[220px\]{max-width:220px}.max-w-\[320px\]{max-width:320px}.max-w-\[520px\]{max-width:520px}.max-w-\[580px\]{max-width:580px}.max-w-\[640px\]{max-width:640px}.max-w-\[860px\]{max-width:860px}.max-w-\[920px\]{max-width:920px}.max-w-\[calc\(100\%-1rem\)\]{max-width:calc(100% - 1rem)}.max-w-\[min\(220px\,85\%\)\]{max-width:min(220px,85%)}.max-w-\[var\(--ec-content-max\,860px\)\]{max-width:var(--ec-content-max,860px)}.max-w-\[var\(--ec-content-max\,960px\)\]{max-width:var(--ec-content-max,960px)}.max-w-full{max-width:100%}.max-w-lg{max-width:var(--container-lg)}.max-w-md{max-width:var(--container-md)}.max-w-none{max-width:none}.max-w-sm{max-width:var(--container-sm)}.max-w-xl{max-width:var(--container-xl)}.max-w-xs{max-width:var(--container-xs)}.min-w-0{min-width:calc(var(--spacing) * 0)}.min-w-\[7\.5rem\]{min-width:7.5rem}.min-w-\[11rem\]{min-width:11rem}.min-w-\[44px\]{min-width:44px}.min-w-\[480px\]{min-width:480px}.min-w-\[560px\]{min-width:560px}.min-w-full{min-width:100%}.flex-1{flex:1}.flex-shrink-0{flex-shrink:0}.shrink{flex-shrink:1}.shrink-0{flex-shrink:0}.grow{flex-grow:1}.border-collapse{border-collapse:collapse}.origin-left{transform-origin:0}.-translate-x-1\/2{--tw-translate-x:calc(calc(1 / 2 * 100%) * -1);translate:var(--tw-translate-x) var(--tw-translate-y)}.-translate-x-full{--tw-translate-x:-100%;translate:var(--tw-translate-x) var(--tw-translate-y)}.translate-x-0{--tw-translate-x:calc(var(--spacing) * 0);translate:var(--tw-translate-x) var(--tw-translate-y)}.translate-x-5{--tw-translate-x:calc(var(--spacing) * 5);translate:var(--tw-translate-x) var(--tw-translate-y)}.-translate-y-1\/2{--tw-translate-y:calc(calc(1 / 2 * 100%) * -1);translate:var(--tw-translate-x) var(--tw-translate-y)}.-translate-y-px{--tw-translate-y:-1px;translate:var(--tw-translate-x) var(--tw-translate-y)}.translate-y-2{--tw-translate-y:calc(var(--spacing) * 2);translate:var(--tw-translate-x) var(--tw-translate-y)}.-rotate-90{rotate:-90deg}.rotate-90{rotate:90deg}.rotate-180{rotate:180deg}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.animate-\[ec-breathe_10s_ease-in-out_infinite\]{animation:10s ease-in-out infinite ec-breathe}.animate-ping{animation:var(--animate-ping)}.animate-pulse{animation:var(--animate-pulse)}.animate-spin{animation:var(--animate-spin)}.cursor-grab{cursor:grab}.cursor-not-allowed{cursor:not-allowed}.cursor-pointer{cursor:pointer}.touch-none{touch-action:none}.resize{resize:both}.resize-none{resize:none}.resize-y{resize:vertical}.scroll-mt-20{scroll-margin-top:calc(var(--spacing) * 20)}.scroll-mt-24{scroll-margin-top:calc(var(--spacing) * 24)}.scroll-mt-28{scroll-margin-top:calc(var(--spacing) * 28)}.\[scrollbar-width\:none\]{scrollbar-width:none}.list-inside{list-style-position:inside}.list-decimal{list-style-type:decimal}.list-disc{list-style-type:disc}.list-none{list-style-type:none}.appearance-none{appearance:none}.grid-cols-1{grid-template-columns:repeat(1,minmax(0,1fr))}.grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-cols-\[40px_1fr\]{grid-template-columns:40px 1fr}.grid-cols-\[repeat\(auto-fill\,minmax\(234px\,1fr\)\)\]{grid-template-columns:repeat(auto-fill,minmax(234px,1fr))}.grid-rows-2{grid-template-rows:repeat(2,minmax(0,1fr))}.flex-col{flex-direction:column}.flex-col-reverse{flex-direction:column-reverse}.flex-wrap{flex-wrap:wrap}.items-baseline{align-items:baseline}.items-center{align-items:center}.items-end{align-items:flex-end}.items-start{align-items:flex-start}.items-stretch{align-items:stretch}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.justify-end{justify-content:flex-end}.gap-0\.5{gap:calc(var(--spacing) * .5)}.gap-1{gap:calc(var(--spacing) * 1)}.gap-1\.5{gap:calc(var(--spacing) * 1.5)}.gap-2{gap:calc(var(--spacing) * 2)}.gap-2\.5{gap:calc(var(--spacing) * 2.5)}.gap-3{gap:calc(var(--spacing) * 3)}.gap-3\.5{gap:calc(var(--spacing) * 3.5)}.gap-4{gap:calc(var(--spacing) * 4)}.gap-5{gap:calc(var(--spacing) * 5)}.gap-6{gap:calc(var(--spacing) * 6)}.gap-7{gap:calc(var(--spacing) * 7)}.gap-8{gap:calc(var(--spacing) * 8)}.gap-10{gap:calc(var(--spacing) * 10)}.gap-\[18px\]{gap:18px}.gap-px{gap:1px}:where(.space-y-0>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 0) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 0) * calc(1 - var(--tw-space-y-reverse)))}:where(.space-y-1>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 1) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 1) * calc(1 - var(--tw-space-y-reverse)))}:where(.space-y-1\.5>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 1.5) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 1.5) * calc(1 - var(--tw-space-y-reverse)))}:where(.space-y-2>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 2) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 2) * calc(1 - var(--tw-space-y-reverse)))}:where(.space-y-2\.5>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 2.5) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 2.5) * calc(1 - var(--tw-space-y-reverse)))}:where(.space-y-3>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 3) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 3) * calc(1 - var(--tw-space-y-reverse)))}:where(.space-y-4>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 4) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 4) * calc(1 - var(--tw-space-y-reverse)))}:where(.space-y-5>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 5) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 5) * calc(1 - var(--tw-space-y-reverse)))}:where(.space-y-6>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 6) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 6) * calc(1 - var(--tw-space-y-reverse)))}:where(.space-y-7>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 7) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 7) * calc(1 - var(--tw-space-y-reverse)))}:where(.space-y-8>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 8) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 8) * calc(1 - var(--tw-space-y-reverse)))}:where(.space-y-10>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 10) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 10) * calc(1 - var(--tw-space-y-reverse)))}:where(.space-y-12>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 12) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 12) * calc(1 - var(--tw-space-y-reverse)))}:where(.space-y-24>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 24) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 24) * calc(1 - var(--tw-space-y-reverse)))}:where(.space-y-\[1\.05em\]>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(1.05em * var(--tw-space-y-reverse));margin-block-end:calc(1.05em * calc(1 - var(--tw-space-y-reverse)))}.gap-x-1\.5{column-gap:calc(var(--spacing) * 1.5)}.gap-x-2{column-gap:calc(var(--spacing) * 2)}.gap-x-3{column-gap:calc(var(--spacing) * 3)}.gap-x-5{column-gap:calc(var(--spacing) * 5)}.gap-y-1{row-gap:calc(var(--spacing) * 1)}.gap-y-2{row-gap:calc(var(--spacing) * 2)}.gap-y-\[0\.1em\]{row-gap:.1em}:where(.divide-y>:not(:last-child)){--tw-divide-y-reverse:0;border-bottom-style:var(--tw-border-style);border-top-style:var(--tw-border-style);border-top-width:calc(1px * var(--tw-divide-y-reverse));border-bottom-width:calc(1px * calc(1 - var(--tw-divide-y-reverse)))}:where(.divide-\[var\(--ec-border-subtle\)\]>:not(:last-child)){border-color:var(--ec-border-subtle)}.self-start{align-self:flex-start}.self-stretch{align-self:stretch}.truncate{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.overflow-hidden{overflow:hidden}.overflow-x-auto{overflow-x:auto}.overflow-x-clip{overflow-x:clip}.overflow-y-auto{overflow-y:auto}.overscroll-contain{overscroll-behavior:contain}.rounded{border-radius:.25rem}.rounded-2xl{border-radius:calc(var(--radius) * 1.8)}.rounded-3xl{border-radius:calc(var(--radius) * 2.2)}.rounded-\[16px\]{border-radius:16px}.rounded-\[28px\]{border-radius:28px}.rounded-\[inherit\]{border-radius:inherit}.rounded-\[var\(--ec-radius-button\)\]{border-radius:var(--ec-radius-button)}.rounded-full{border-radius:3.40282e38px}.rounded-lg{border-radius:var(--radius)}.rounded-md{border-radius:calc(var(--radius) * .8)}.rounded-none{border-radius:0}.rounded-xl{border-radius:calc(var(--radius) * 1.4)}.rounded-t-3xl{border-top-left-radius:calc(var(--radius) * 2.2);border-top-right-radius:calc(var(--radius) * 2.2)}.rounded-bl-md{border-bottom-left-radius:calc(var(--radius) * .8)}.border{border-style:var(--tw-border-style);border-width:1px}.border-0{border-style:var(--tw-border-style);border-width:0}.border-2{border-style:var(--tw-border-style);border-width:2px}.border-\[3px\]{border-style:var(--tw-border-style);border-width:3px}.border-t{border-top-style:var(--tw-border-style);border-top-width:1px}.border-b{border-bottom-style:var(--tw-border-style);border-bottom-width:1px}.border-b-2{border-bottom-style:var(--tw-border-style);border-bottom-width:2px}.border-l-2{border-left-style:var(--tw-border-style);border-left-width:2px}.border-dashed{--tw-border-style:dashed;border-style:dashed}.\!border-\[color-mix\(in_srgb\,var\(--ec-brand\)_22\%\,transparent\)\]{border-color:var(--ec-brand)!important}@supports (color:color-mix(in lab, red, red)){.\!border-\[color-mix\(in_srgb\,var\(--ec-brand\)_22\%\,transparent\)\]{border-color:color-mix(in srgb,var(--ec-brand) 22%,transparent)!important}}.border-\[\#747775\]{border-color:#747775}.border-\[\#747775\]\/40{border-color:#74777566;border-color:lab(49.7245% -1.47986 .68537/.4)}.border-\[color-mix\(in_srgb\,var\(--course-subject-accent\,var\(--ec-brand\)\)_35\%\,var\(--ec-border-subtle\)\)\]{border-color:var(--course-subject-accent,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.border-\[color-mix\(in_srgb\,var\(--course-subject-accent\,var\(--ec-brand\)\)_35\%\,var\(--ec-border-subtle\)\)\]{border-color:color-mix(in srgb,var(--course-subject-accent,var(--ec-brand)) 35%,var(--ec-border-subtle))}}.border-\[color-mix\(in_srgb\,var\(--course-subject-accent\,var\(--ec-brand\)\)_40\%\,transparent\)\]{border-color:var(--course-subject-accent,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.border-\[color-mix\(in_srgb\,var\(--course-subject-accent\,var\(--ec-brand\)\)_40\%\,transparent\)\]{border-color:color-mix(in srgb,var(--course-subject-accent,var(--ec-brand)) 40%,transparent)}}.border-\[color-mix\(in_srgb\,var\(--ec-brand\)_20\%\,transparent\)\]{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.border-\[color-mix\(in_srgb\,var\(--ec-brand\)_20\%\,transparent\)\]{border-color:color-mix(in srgb,var(--ec-brand) 20%,transparent)}}.border-\[color-mix\(in_srgb\,var\(--ec-brand\)_22\%\,var\(--ec-border-subtle\)\)\]{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.border-\[color-mix\(in_srgb\,var\(--ec-brand\)_22\%\,var\(--ec-border-subtle\)\)\]{border-color:color-mix(in srgb,var(--ec-brand) 22%,var(--ec-border-subtle))}}.border-\[color-mix\(in_srgb\,var\(--ec-brand\)_24\%\,var\(--ec-border\)\)\]{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.border-\[color-mix\(in_srgb\,var\(--ec-brand\)_24\%\,var\(--ec-border\)\)\]{border-color:color-mix(in srgb,var(--ec-brand) 24%,var(--ec-border))}}.border-\[color-mix\(in_srgb\,var\(--ec-brand\)_28\%\,transparent\)\]{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.border-\[color-mix\(in_srgb\,var\(--ec-brand\)_28\%\,transparent\)\]{border-color:color-mix(in srgb,var(--ec-brand) 28%,transparent)}}.border-\[color-mix\(in_srgb\,var\(--ec-brand\)_30\%\,var\(--ec-border-subtle\)\)\]{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.border-\[color-mix\(in_srgb\,var\(--ec-brand\)_30\%\,var\(--ec-border-subtle\)\)\]{border-color:color-mix(in srgb,var(--ec-brand) 30%,var(--ec-border-subtle))}}.border-\[color-mix\(in_srgb\,var\(--ec-brand\)_35\%\,var\(--ec-border-subtle\)\)\]{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.border-\[color-mix\(in_srgb\,var\(--ec-brand\)_35\%\,var\(--ec-border-subtle\)\)\]{border-color:color-mix(in srgb,var(--ec-brand) 35%,var(--ec-border-subtle))}}.border-\[color-mix\(in_srgb\,var\(--ec-brand\)_40\%\,transparent\)\]{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.border-\[color-mix\(in_srgb\,var\(--ec-brand\)_40\%\,transparent\)\]{border-color:color-mix(in srgb,var(--ec-brand) 40%,transparent)}}.border-\[color-mix\(in_srgb\,var\(--ec-brand\)_50\%\,transparent\)\]{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.border-\[color-mix\(in_srgb\,var\(--ec-brand\)_50\%\,transparent\)\]{border-color:color-mix(in srgb,var(--ec-brand) 50%,transparent)}}.border-\[color-mix\(in_srgb\,var\(--ec-chip-accent-text\)_20\%\,transparent\)\]{border-color:var(--ec-chip-accent-text)}@supports (color:color-mix(in lab, red, red)){.border-\[color-mix\(in_srgb\,var\(--ec-chip-accent-text\)_20\%\,transparent\)\]{border-color:color-mix(in srgb,var(--ec-chip-accent-text) 20%,transparent)}}.border-\[color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_30\%\,transparent\)\]{border-color:var(--ec-chip-critical-text)}@supports (color:color-mix(in lab, red, red)){.border-\[color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_30\%\,transparent\)\]{border-color:color-mix(in srgb,var(--ec-chip-critical-text) 30%,transparent)}}.border-\[color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_40\%\,transparent\)\]{border-color:var(--ec-chip-critical-text)}@supports (color:color-mix(in lab, red, red)){.border-\[color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_40\%\,transparent\)\]{border-color:color-mix(in srgb,var(--ec-chip-critical-text) 40%,transparent)}}.border-\[color-mix\(in_srgb\,var\(--ec-chip-info-text\)_40\%\,transparent\)\]{border-color:var(--ec-chip-info-text)}@supports (color:color-mix(in lab, red, red)){.border-\[color-mix\(in_srgb\,var\(--ec-chip-info-text\)_40\%\,transparent\)\]{border-color:color-mix(in srgb,var(--ec-chip-info-text) 40%,transparent)}}.border-\[color-mix\(in_srgb\,var\(--ec-chip-warning-text\)_30\%\,transparent\)\]{border-color:var(--ec-chip-warning-text)}@supports (color:color-mix(in lab, red, red)){.border-\[color-mix\(in_srgb\,var\(--ec-chip-warning-text\)_30\%\,transparent\)\]{border-color:color-mix(in srgb,var(--ec-chip-warning-text) 30%,transparent)}}.border-\[color-mix\(in_srgb\,var\(--ec-chip-warning-text\)_40\%\,transparent\)\]{border-color:var(--ec-chip-warning-text)}@supports (color:color-mix(in lab, red, red)){.border-\[color-mix\(in_srgb\,var\(--ec-chip-warning-text\)_40\%\,transparent\)\]{border-color:color-mix(in srgb,var(--ec-chip-warning-text) 40%,transparent)}}.border-\[var\(--course-accent\)\]{border-color:var(--course-accent)}.border-\[var\(--course-border\)\]{border-color:var(--course-border)}.border-\[var\(--course-border\,var\(--ec-border-subtle\)\)\]{border-color:var(--course-border,var(--ec-border-subtle))}.border-\[var\(--ec-border\)\]{border-color:var(--ec-border)}.border-\[var\(--ec-border-subtle\)\]{border-color:var(--ec-border-subtle)}.border-\[var\(--ec-brand\)\],.border-\[var\(--ec-brand\)\]\/25{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.border-\[var\(--ec-brand\)\]\/25{border-color:color-mix(in oklab, var(--ec-brand) 25%, transparent)}}.border-\[var\(--ec-brand\)\]\/30{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.border-\[var\(--ec-brand\)\]\/30{border-color:color-mix(in oklab, var(--ec-brand) 30%, transparent)}}.border-blue-500\/30{border-color:#3080ff4d}@supports (color:color-mix(in lab, red, red)){.border-blue-500\/30{border-color:color-mix(in oklab, var(--color-blue-500) 30%, transparent)}}.border-cyan-500\/30{border-color:#00b7d74d}@supports (color:color-mix(in lab, red, red)){.border-cyan-500\/30{border-color:color-mix(in oklab, var(--color-cyan-500) 30%, transparent)}}.border-indigo-500\/30{border-color:#625fff4d}@supports (color:color-mix(in lab, red, red)){.border-indigo-500\/30{border-color:color-mix(in oklab, var(--color-indigo-500) 30%, transparent)}}.border-input{border-color:var(--input)}.border-orange-500\/30{border-color:#fe6e004d}@supports (color:color-mix(in lab, red, red)){.border-orange-500\/30{border-color:color-mix(in oklab, var(--color-orange-500) 30%, transparent)}}.border-pink-500\/30{border-color:#f6339a4d}@supports (color:color-mix(in lab, red, red)){.border-pink-500\/30{border-color:color-mix(in oklab, var(--color-pink-500) 30%, transparent)}}.border-teal-500\/30{border-color:#00baa74d}@supports (color:color-mix(in lab, red, red)){.border-teal-500\/30{border-color:color-mix(in oklab, var(--color-teal-500) 30%, transparent)}}.border-violet-500\/30{border-color:#8d54ff4d}@supports (color:color-mix(in lab, red, red)){.border-violet-500\/30{border-color:color-mix(in oklab, var(--color-violet-500) 30%, transparent)}}.border-t-\[var\(--ec-brand\)\]{border-top-color:var(--ec-brand)}.bg-\[\#e8eaed\]{background-color:#e8eaed}.bg-\[color-mix\(in_srgb\,\#8f1f1c_12\%\,transparent\)\]{background-color:#8f1f1c1f}.bg-\[color-mix\(in_srgb\,\#e0a13a_18\%\,var\(--ec-surface\)\)\]{background-color:#e0a13a}@supports (color:color-mix(in lab, red, red)){.bg-\[color-mix\(in_srgb\,\#e0a13a_18\%\,var\(--ec-surface\)\)\]{background-color:color-mix(in srgb,#e0a13a 18%,var(--ec-surface))}}.bg-\[color-mix\(in_srgb\,\#e0575b_16\%\,var\(--ec-surface\)\)\]{background-color:#e0575b}@supports (color:color-mix(in lab, red, red)){.bg-\[color-mix\(in_srgb\,\#e0575b_16\%\,var\(--ec-surface\)\)\]{background-color:color-mix(in srgb,#e0575b 16%,var(--ec-surface))}}.bg-\[color-mix\(in_srgb\,var\(--course-subject-accent\,var\(--ec-brand\)\)_10\%\,transparent\)\]{background-color:var(--course-subject-accent,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.bg-\[color-mix\(in_srgb\,var\(--course-subject-accent\,var\(--ec-brand\)\)_10\%\,transparent\)\]{background-color:color-mix(in srgb,var(--course-subject-accent,var(--ec-brand)) 10%,transparent)}}.bg-\[color-mix\(in_srgb\,var\(--ec-brand\)_5\%\,transparent\)\]{background-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.bg-\[color-mix\(in_srgb\,var\(--ec-brand\)_5\%\,transparent\)\]{background-color:color-mix(in srgb,var(--ec-brand) 5%,transparent)}}.bg-\[color-mix\(in_srgb\,var\(--ec-brand\)_6\%\,var\(--ec-surface\)\)\]{background-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.bg-\[color-mix\(in_srgb\,var\(--ec-brand\)_6\%\,var\(--ec-surface\)\)\]{background-color:color-mix(in srgb,var(--ec-brand) 6%,var(--ec-surface))}}.bg-\[color-mix\(in_srgb\,var\(--ec-brand\)_7\%\,var\(--ec-surface-muted\)\)\]{background-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.bg-\[color-mix\(in_srgb\,var\(--ec-brand\)_7\%\,var\(--ec-surface-muted\)\)\]{background-color:color-mix(in srgb,var(--ec-brand) 7%,var(--ec-surface-muted))}}.bg-\[color-mix\(in_srgb\,var\(--ec-brand\)_10\%\,transparent\)\]{background-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.bg-\[color-mix\(in_srgb\,var\(--ec-brand\)_10\%\,transparent\)\]{background-color:color-mix(in srgb,var(--ec-brand) 10%,transparent)}}.bg-\[color-mix\(in_srgb\,var\(--ec-brand\)_10\%\,var\(--ec-surface-raised\)\)\]{background-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.bg-\[color-mix\(in_srgb\,var\(--ec-brand\)_10\%\,var\(--ec-surface-raised\)\)\]{background-color:color-mix(in srgb,var(--ec-brand) 10%,var(--ec-surface-raised))}}.bg-\[color-mix\(in_srgb\,var\(--ec-brand\)_15\%\,transparent\)\]{background-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.bg-\[color-mix\(in_srgb\,var\(--ec-brand\)_15\%\,transparent\)\]{background-color:color-mix(in srgb,var(--ec-brand) 15%,transparent)}}.bg-\[color-mix\(in_srgb\,var\(--ec-brand\)_28\%\,transparent\)\]{background-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.bg-\[color-mix\(in_srgb\,var\(--ec-brand\)_28\%\,transparent\)\]{background-color:color-mix(in srgb,var(--ec-brand) 28%,transparent)}}.bg-\[color-mix\(in_srgb\,var\(--ec-brand\)_40\%\,transparent\)\]{background-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.bg-\[color-mix\(in_srgb\,var\(--ec-brand\)_40\%\,transparent\)\]{background-color:color-mix(in srgb,var(--ec-brand) 40%,transparent)}}.bg-\[color-mix\(in_srgb\,var\(--ec-canvas\)_55\%\,transparent\)\]{background-color:var(--ec-canvas)}@supports (color:color-mix(in lab, red, red)){.bg-\[color-mix\(in_srgb\,var\(--ec-canvas\)_55\%\,transparent\)\]{background-color:color-mix(in srgb,var(--ec-canvas) 55%,transparent)}}.bg-\[color-mix\(in_srgb\,var\(--ec-chip-warning-text\)_45\%\,var\(--ec-chip-critical-text\)\)\]{background-color:var(--ec-chip-warning-text)}@supports (color:color-mix(in lab, red, red)){.bg-\[color-mix\(in_srgb\,var\(--ec-chip-warning-text\)_45\%\,var\(--ec-chip-critical-text\)\)\]{background-color:color-mix(in srgb,var(--ec-chip-warning-text) 45%,var(--ec-chip-critical-text))}}.bg-\[color-mix\(in_srgb\,var\(--ec-surface\)_92\%\,transparent\)\]{background-color:var(--ec-surface)}@supports (color:color-mix(in lab, red, red)){.bg-\[color-mix\(in_srgb\,var\(--ec-surface\)_92\%\,transparent\)\]{background-color:color-mix(in srgb,var(--ec-surface) 92%,transparent)}}.bg-\[var\(--course-accent-muted\)\]{background-color:var(--course-accent-muted)}.bg-\[var\(--course-surface-card\)\]{background-color:var(--course-surface-card)}.bg-\[var\(--course-surface-card\,var\(--ec-surface-muted\)\)\]{background-color:var(--course-surface-card,var(--ec-surface-muted))}.bg-\[var\(--ec-accent\)\]{background-color:var(--ec-accent)}.bg-\[var\(--ec-bg-soft\)\]{background-color:var(--ec-bg-soft)}.bg-\[var\(--ec-border\)\]{background-color:var(--ec-border)}.bg-\[var\(--ec-brand\)\],.bg-\[var\(--ec-brand\)\]\/5{background-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.bg-\[var\(--ec-brand\)\]\/5{background-color:color-mix(in oklab, var(--ec-brand) 5%, transparent)}}.bg-\[var\(--ec-brand\)\]\/10{background-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.bg-\[var\(--ec-brand\)\]\/10{background-color:color-mix(in oklab, var(--ec-brand) 10%, transparent)}}.bg-\[var\(--ec-brand-muted\)\]{background-color:var(--ec-brand-muted)}.bg-\[var\(--ec-canvas\)\]{background-color:var(--ec-canvas)}.bg-\[var\(--ec-chip-critical-bg\)\]{background-color:var(--ec-chip-critical-bg)}.bg-\[var\(--ec-chip-critical-text\)\]{background-color:var(--ec-chip-critical-text)}.bg-\[var\(--ec-chip-neutral-text\)\]{background-color:var(--ec-chip-neutral-text)}.bg-\[var\(--ec-chip-sampled-text\)\]{background-color:var(--ec-chip-sampled-text)}.bg-\[var\(--ec-chip-success-text\)\]{background-color:var(--ec-chip-success-text)}.bg-\[var\(--ec-chip-warning-bg\)\]{background-color:var(--ec-chip-warning-bg)}.bg-\[var\(--ec-chip-warning-text\)\]{background-color:var(--ec-chip-warning-text)}.bg-\[var\(--ec-ink-red\)\]{background-color:var(--ec-ink-red)}.bg-\[var\(--ec-paper\)\]{background-color:var(--ec-paper)}.bg-\[var\(--ec-surface\)\],.bg-\[var\(--ec-surface\)\]\/95{background-color:var(--ec-surface)}@supports (color:color-mix(in lab, red, red)){.bg-\[var\(--ec-surface\)\]\/95{background-color:color-mix(in oklab, var(--ec-surface) 95%, transparent)}}.bg-\[var\(--ec-surface-muted\)\]{background-color:var(--ec-surface-muted)}.bg-\[var\(--ec-surface-raised\)\],.bg-\[var\(--ec-surface-raised\)\]\/80{background-color:var(--ec-surface-raised)}@supports (color:color-mix(in lab, red, red)){.bg-\[var\(--ec-surface-raised\)\]\/80{background-color:color-mix(in oklab, var(--ec-surface-raised) 80%, transparent)}}.bg-\[var\(--ec-text-primary\)\]{background-color:var(--ec-text-primary)}.bg-\[var\(--ec-text-secondary\)\]{background-color:var(--ec-text-secondary)}.bg-amber-500\/40{background-color:#f99c0066}@supports (color:color-mix(in lab, red, red)){.bg-amber-500\/40{background-color:color-mix(in oklab, var(--color-amber-500) 40%, transparent)}}.bg-black\/20{background-color:#0003}@supports (color:color-mix(in lab, red, red)){.bg-black\/20{background-color:color-mix(in oklab, var(--color-black) 20%, transparent)}}.bg-blue-500\/10{background-color:#3080ff1a}@supports (color:color-mix(in lab, red, red)){.bg-blue-500\/10{background-color:color-mix(in oklab, var(--color-blue-500) 10%, transparent)}}.bg-cyan-500\/10{background-color:#00b7d71a}@supports (color:color-mix(in lab, red, red)){.bg-cyan-500\/10{background-color:color-mix(in oklab, var(--color-cyan-500) 10%, transparent)}}.bg-indigo-500\/10{background-color:#625fff1a}@supports (color:color-mix(in lab, red, red)){.bg-indigo-500\/10{background-color:color-mix(in oklab, var(--color-indigo-500) 10%, transparent)}}.bg-orange-500\/10{background-color:#fe6e001a}@supports (color:color-mix(in lab, red, red)){.bg-orange-500\/10{background-color:color-mix(in oklab, var(--color-orange-500) 10%, transparent)}}.bg-pink-500\/10{background-color:#f6339a1a}@supports (color:color-mix(in lab, red, red)){.bg-pink-500\/10{background-color:color-mix(in oklab, var(--color-pink-500) 10%, transparent)}}.bg-red-500\/40{background-color:#fb2c3666}@supports (color:color-mix(in lab, red, red)){.bg-red-500\/40{background-color:color-mix(in oklab, var(--color-red-500) 40%, transparent)}}.bg-teal-500\/10{background-color:#00baa71a}@supports (color:color-mix(in lab, red, red)){.bg-teal-500\/10{background-color:color-mix(in oklab, var(--color-teal-500) 10%, transparent)}}.bg-transparent{background-color:#0000}.bg-violet-500\/10{background-color:#8d54ff1a}@supports (color:color-mix(in lab, red, red)){.bg-violet-500\/10{background-color:color-mix(in oklab, var(--color-violet-500) 10%, transparent)}}.bg-white{background-color:var(--color-white)}.bg-white\/90{background-color:#ffffffe6}@supports (color:color-mix(in lab, red, red)){.bg-white\/90{background-color:color-mix(in oklab, var(--color-white) 90%, transparent)}}.bg-gradient-to-r{--tw-gradient-position:to right in oklab;background-image:linear-gradient(var(--tw-gradient-stops))}.from-red-600{--tw-gradient-from:var(--color-red-600);--tw-gradient-stops:var(--tw-gradient-via-stops,var(--tw-gradient-position), var(--tw-gradient-from) var(--tw-gradient-from-position), var(--tw-gradient-to) var(--tw-gradient-to-position))}.from-transparent{--tw-gradient-from:transparent;--tw-gradient-stops:var(--tw-gradient-via-stops,var(--tw-gradient-position), var(--tw-gradient-from) var(--tw-gradient-from-position), var(--tw-gradient-to) var(--tw-gradient-to-position))}.via-\[color-mix\(in_srgb\,var\(--ec-text-primary\)_10\%\,transparent\)\]{--tw-gradient-via:var(--ec-text-primary)}@supports (color:color-mix(in lab, red, red)){.via-\[color-mix\(in_srgb\,var\(--ec-text-primary\)_10\%\,transparent\)\]{--tw-gradient-via:color-mix(in srgb,var(--ec-text-primary) 10%,transparent)}}.via-\[color-mix\(in_srgb\,var\(--ec-text-primary\)_10\%\,transparent\)\]{--tw-gradient-via-stops:var(--tw-gradient-position), var(--tw-gradient-from) var(--tw-gradient-from-position), var(--tw-gradient-via) var(--tw-gradient-via-position), var(--tw-gradient-to) var(--tw-gradient-to-position);--tw-gradient-stops:var(--tw-gradient-via-stops)}.via-\[var\(--ec-border\)\]{--tw-gradient-via:var(--ec-border);--tw-gradient-via-stops:var(--tw-gradient-position), var(--tw-gradient-from) var(--tw-gradient-from-position), var(--tw-gradient-via) var(--tw-gradient-via-position), var(--tw-gradient-to) var(--tw-gradient-to-position);--tw-gradient-stops:var(--tw-gradient-via-stops)}.to-red-400{--tw-gradient-to:var(--color-red-400);--tw-gradient-stops:var(--tw-gradient-via-stops,var(--tw-gradient-position), var(--tw-gradient-from) var(--tw-gradient-from-position), var(--tw-gradient-to) var(--tw-gradient-to-position))}.to-transparent{--tw-gradient-to:transparent;--tw-gradient-stops:var(--tw-gradient-via-stops,var(--tw-gradient-position), var(--tw-gradient-from) var(--tw-gradient-from-position), var(--tw-gradient-to) var(--tw-gradient-to-position))}.\[mask-image\:linear-gradient\(to_right\,black_90\%\,transparent\)\]{-webkit-mask-image:linear-gradient(90deg,#000 90%,#0000);mask-image:linear-gradient(90deg,#000 90%,#0000)}.fill-\[var\(--ec-text-primary\)\]{fill:var(--ec-text-primary)}.object-contain{object-fit:contain}.object-cover{object-fit:cover}.\!p-0{padding:calc(var(--spacing) * 0)!important}.p-0{padding:calc(var(--spacing) * 0)}.p-1{padding:calc(var(--spacing) * 1)}.p-1\.5{padding:calc(var(--spacing) * 1.5)}.p-2{padding:calc(var(--spacing) * 2)}.p-2\.5{padding:calc(var(--spacing) * 2.5)}.p-3{padding:calc(var(--spacing) * 3)}.p-3\.5{padding:calc(var(--spacing) * 3.5)}.p-4{padding:calc(var(--spacing) * 4)}.p-5{padding:calc(var(--spacing) * 5)}.p-6{padding:calc(var(--spacing) * 6)}.p-8{padding:calc(var(--spacing) * 8)}.p-10{padding:calc(var(--spacing) * 10)}.px-0{padding-inline:calc(var(--spacing) * 0)}.px-0\.5{padding-inline:calc(var(--spacing) * .5)}.px-1{padding-inline:calc(var(--spacing) * 1)}.px-1\.5{padding-inline:calc(var(--spacing) * 1.5)}.px-2{padding-inline:calc(var(--spacing) * 2)}.px-2\.5{padding-inline:calc(var(--spacing) * 2.5)}.px-3{padding-inline:calc(var(--spacing) * 3)}.px-3\.5{padding-inline:calc(var(--spacing) * 3.5)}.px-4{padding-inline:calc(var(--spacing) * 4)}.px-5{padding-inline:calc(var(--spacing) * 5)}.px-6{padding-inline:calc(var(--spacing) * 6)}.px-7{padding-inline:calc(var(--spacing) * 7)}.px-8{padding-inline:calc(var(--spacing) * 8)}.px-\[18px\]{padding-inline:18px}.py-0\.5{padding-block:calc(var(--spacing) * .5)}.py-1{padding-block:calc(var(--spacing) * 1)}.py-1\.5{padding-block:calc(var(--spacing) * 1.5)}.py-2{padding-block:calc(var(--spacing) * 2)}.py-2\.5{padding-block:calc(var(--spacing) * 2.5)}.py-3{padding-block:calc(var(--spacing) * 3)}.py-3\.5{padding-block:calc(var(--spacing) * 3.5)}.py-4{padding-block:calc(var(--spacing) * 4)}.py-5{padding-block:calc(var(--spacing) * 5)}.py-6{padding-block:calc(var(--spacing) * 6)}.py-8{padding-block:calc(var(--spacing) * 8)}.py-10{padding-block:calc(var(--spacing) * 10)}.py-12{padding-block:calc(var(--spacing) * 12)}.py-16{padding-block:calc(var(--spacing) * 16)}.\!pt-0{padding-top:calc(var(--spacing) * 0)!important}.\!pt-2{padding-top:calc(var(--spacing) * 2)!important}.\!pt-8{padding-top:calc(var(--spacing) * 8)!important}.\!pt-12{padding-top:calc(var(--spacing) * 12)!important}.pt-0{padding-top:calc(var(--spacing) * 0)}.pt-1{padding-top:calc(var(--spacing) * 1)}.pt-2{padding-top:calc(var(--spacing) * 2)}.pt-3{padding-top:calc(var(--spacing) * 3)}.pt-4{padding-top:calc(var(--spacing) * 4)}.pt-5{padding-top:calc(var(--spacing) * 5)}.pt-6{padding-top:calc(var(--spacing) * 6)}.pt-8{padding-top:calc(var(--spacing) * 8)}.pt-10{padding-top:calc(var(--spacing) * 10)}.pt-12{padding-top:calc(var(--spacing) * 12)}.pt-24{padding-top:calc(var(--spacing) * 24)}.pt-\[calc\(0\.75rem\+env\(safe-area-inset-top\,0px\)\)\]{padding-top:calc(.75rem + env(safe-area-inset-top,0px))}.pt-\[calc\(1\.5rem\+env\(safe-area-inset-top\,0px\)\)\]{padding-top:calc(1.5rem + env(safe-area-inset-top,0px))}.pr-4{padding-right:calc(var(--spacing) * 4)}.pr-10{padding-right:calc(var(--spacing) * 10)}.pr-12{padding-right:calc(var(--spacing) * 12)}.\!pb-0{padding-bottom:calc(var(--spacing) * 0)!important}.pb-1{padding-bottom:calc(var(--spacing) * 1)}.pb-3{padding-bottom:calc(var(--spacing) * 3)}.pb-5{padding-bottom:calc(var(--spacing) * 5)}.pb-8{padding-bottom:calc(var(--spacing) * 8)}.pb-16{padding-bottom:calc(var(--spacing) * 16)}.pb-24{padding-bottom:calc(var(--spacing) * 24)}.pb-\[calc\(5rem\+env\(safe-area-inset-bottom\,0px\)\)\]{padding-bottom:calc(5rem + env(safe-area-inset-bottom,0px))}.pb-px{padding-bottom:1px}.pl-0{padding-left:calc(var(--spacing) * 0)}.pl-3{padding-left:calc(var(--spacing) * 3)}.pl-5{padding-left:calc(var(--spacing) * 5)}.pl-6{padding-left:calc(var(--spacing) * 6)}.pl-8{padding-left:calc(var(--spacing) * 8)}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.align-text-bottom{vertical-align:text-bottom}.font-\[family-name\:var\(--ec-font-handwriting\)\]{font-family:var(--ec-font-handwriting)}.font-\[family-name\:var\(--ec-font-mono\,ui-monospace\)\]{font-family:var(--ec-font-mono,ui-monospace)}.font-\[family-name\:var\(--font-display\)\]{font-family:var(--font-display)}.font-\[family-name\:var\(--font-handwritten\,\'Caveat\'\,cursive\)\]{font-family:var(--font-handwritten,"Caveat",cursive)}.font-mono{font-family:var(--font-mono)}.text-2xl{font-size:var(--text-2xl);line-height:var(--tw-leading,var(--text-2xl--line-height))}.text-3xl{font-size:var(--text-3xl);line-height:var(--tw-leading,var(--text-3xl--line-height))}.text-4xl{font-size:var(--text-4xl);line-height:var(--tw-leading,var(--text-4xl--line-height))}.text-5xl{font-size:var(--text-5xl);line-height:var(--tw-leading,var(--text-5xl--line-height))}.text-6xl{font-size:var(--text-6xl);line-height:var(--tw-leading,var(--text-6xl--line-height))}.text-base{font-size:var(--text-base);line-height:var(--tw-leading,var(--text-base--line-height))}.text-lg{font-size:var(--text-lg);line-height:var(--tw-leading,var(--text-lg--line-height))}.text-sm{font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height))}.text-xl{font-size:var(--text-xl);line-height:var(--tw-leading,var(--text-xl--line-height))}.text-xs{font-size:var(--text-xs);line-height:var(--tw-leading,var(--text-xs--line-height))}.text-\[0\.95rem\]{font-size:.95rem}.text-\[1\.75rem\]{font-size:1.75rem}.text-\[10px\]{font-size:10px}.text-\[11px\]{font-size:11px}.text-\[12px\]{font-size:12px}.text-\[13\.5px\]{font-size:13.5px}.text-\[13px\]{font-size:13px}.text-\[14px\]{font-size:14px}.text-\[15px\]{font-size:15px}.text-\[18px\]{font-size:18px}.text-\[19px\]{font-size:19px}.text-\[21px\]{font-size:21px}.text-\[22px\]{font-size:22px}.text-\[23px\]{font-size:23px}.text-\[26px\]{font-size:26px}.text-\[64px\]{font-size:64px}.text-\[clamp\(2\.25rem\,5\.4vw\,4\.5rem\)\]{font-size:clamp(2.25rem,5.4vw,4.5rem)}.leading-\[1\.5\]{--tw-leading:1.5;line-height:1.5}.leading-\[1\.08\]{--tw-leading:1.08;line-height:1.08}.leading-\[1\.8\]{--tw-leading:1.8;line-height:1.8}.leading-\[1\.55\]{--tw-leading:1.55;line-height:1.55}.leading-none{--tw-leading:1;line-height:1}.leading-relaxed{--tw-leading:var(--leading-relaxed);line-height:var(--leading-relaxed)}.leading-snug{--tw-leading:var(--leading-snug);line-height:var(--leading-snug)}.leading-tight{--tw-leading:var(--leading-tight);line-height:var(--leading-tight)}.font-bold{--tw-font-weight:var(--font-weight-bold);font-weight:var(--font-weight-bold)}.font-medium{--tw-font-weight:var(--font-weight-medium);font-weight:var(--font-weight-medium)}.font-normal{--tw-font-weight:var(--font-weight-normal);font-weight:var(--font-weight-normal)}.font-semibold{--tw-font-weight:var(--font-weight-semibold);font-weight:var(--font-weight-semibold)}.tracking-\[-0\.01em\]{--tw-tracking:-.01em;letter-spacing:-.01em}.tracking-\[-0\.005em\]{--tw-tracking:-.005em;letter-spacing:-.005em}.tracking-\[0\.1em\]{--tw-tracking:.1em;letter-spacing:.1em}.tracking-\[0\.2em\]{--tw-tracking:.2em;letter-spacing:.2em}.tracking-\[0\.04em\]{--tw-tracking:.04em;letter-spacing:.04em}.tracking-\[0\.05em\]{--tw-tracking:.05em;letter-spacing:.05em}.tracking-\[0\.14em\]{--tw-tracking:.14em;letter-spacing:.14em}.tracking-\[0\.18em\]{--tw-tracking:.18em;letter-spacing:.18em}.tracking-tight{--tw-tracking:var(--tracking-tight);letter-spacing:var(--tracking-tight)}.tracking-wide{--tw-tracking:var(--tracking-wide);letter-spacing:var(--tracking-wide)}.tracking-wider{--tw-tracking:var(--tracking-wider);letter-spacing:var(--tracking-wider)}.tracking-widest{--tw-tracking:var(--tracking-widest);letter-spacing:var(--tracking-widest)}.break-words{overflow-wrap:break-word}.whitespace-normal{white-space:normal}.whitespace-nowrap{white-space:nowrap}.whitespace-pre-line{white-space:pre-line}.whitespace-pre-wrap{white-space:pre-wrap}.text-\[\#1f1f1f\]{color:#1f1f1f}.text-\[\#1f1f1f\]\/70{color:#1f1f1fb3;color:lab(11.7579% .00000745058 .00000298023/.7)}.text-\[\#8f1f1c\]{color:#8f1f1c}.text-\[\#a06a11\]{color:#a06a11}.text-\[\#c53a3f\]{color:#c53a3f}.text-\[color-mix\(in_srgb\,var\(--ec-brand\)_90\%\,transparent\)\]{color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.text-\[color-mix\(in_srgb\,var\(--ec-brand\)_90\%\,transparent\)\]{color:color-mix(in srgb,var(--ec-brand) 90%,transparent)}}.text-\[var\(--course-accent\)\]{color:var(--course-accent)}.text-\[var\(--course-subject-accent\,var\(--ec-brand\)\)\]{color:var(--course-subject-accent,var(--ec-brand))}.text-\[var\(--ec-accent\)\]{color:var(--ec-accent)}.text-\[var\(--ec-banner-warning-title\)\]{color:var(--ec-banner-warning-title)}.text-\[var\(--ec-brand\)\]{color:var(--ec-brand)}.text-\[var\(--ec-chip-accent-text\)\]{color:var(--ec-chip-accent-text)}.text-\[var\(--ec-chip-critical-text\)\]{color:var(--ec-chip-critical-text)}.text-\[var\(--ec-chip-info-text\)\]{color:var(--ec-chip-info-text)}.text-\[var\(--ec-chip-sampled-text\)\]{color:var(--ec-chip-sampled-text)}.text-\[var\(--ec-danger\,\#b91c1c\)\]{color:var(--ec-danger,#b91c1c)}.text-\[var\(--ec-error\,\#f87171\)\]{color:var(--ec-error,#f87171)}.text-\[var\(--ec-ink-red\)\]{color:var(--ec-ink-red)}.text-\[var\(--ec-notebook-ink\)\]{color:var(--ec-notebook-ink)}.text-\[var\(--ec-notebook-pencil\)\]{color:var(--ec-notebook-pencil)}.text-\[var\(--ec-surface\)\]{color:var(--ec-surface)}.text-\[var\(--ec-surface-raised\)\]{color:var(--ec-surface-raised)}.text-\[var\(--ec-text-faint\)\]{color:var(--ec-text-faint)}.text-\[var\(--ec-text-faint\,\#8a7f70\)\]{color:var(--ec-text-faint,#8a7f70)}.text-\[var\(--ec-text-primary\)\]{color:var(--ec-text-primary)}.text-\[var\(--ec-text-secondary\)\]{color:var(--ec-text-secondary)}.text-\[var\(--ec-text-tertiary\)\]{color:var(--ec-text-tertiary)}.text-\[var\(--ec-warning\,\#fbbf24\)\]{color:var(--ec-warning,#fbbf24)}.text-blue-300{color:var(--color-blue-300)}.text-cyan-300{color:var(--color-cyan-300)}.text-indigo-300{color:var(--color-indigo-300)}.text-orange-300{color:var(--color-orange-300)}.text-pink-300{color:var(--color-pink-300)}.text-teal-300{color:var(--color-teal-300)}.text-transparent{color:#0000}.text-violet-300{color:var(--color-violet-300)}.text-white{color:var(--color-white)}.capitalize{text-transform:capitalize}.lowercase{text-transform:lowercase}.normal-case{text-transform:none}.uppercase{text-transform:uppercase}.italic{font-style:italic}.ordinal{--tw-ordinal:ordinal;font-variant-numeric:var(--tw-ordinal,) var(--tw-slashed-zero,) var(--tw-numeric-figure,) var(--tw-numeric-spacing,) var(--tw-numeric-fraction,)}.tabular-nums{--tw-numeric-spacing:tabular-nums;font-variant-numeric:var(--tw-ordinal,) var(--tw-slashed-zero,) var(--tw-numeric-figure,) var(--tw-numeric-spacing,) var(--tw-numeric-fraction,)}.line-through{text-decoration-line:line-through}.no-underline{text-decoration-line:none}.overline{text-decoration-line:overline}.underline{text-decoration-line:underline}.decoration-\[var\(--ec-border\)\]{-webkit-text-decoration-color:var(--ec-border);-webkit-text-decoration-color:var(--ec-border);-webkit-text-decoration-color:var(--ec-border);text-decoration-color:var(--ec-border)}.underline-offset-2{text-underline-offset:2px}.underline-offset-4{text-underline-offset:4px}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.accent-\[var\(--ec-brand\)\]{accent-color:var(--ec-brand)}.opacity-0{opacity:0}.opacity-20{opacity:.2}.opacity-25{opacity:.25}.opacity-40{opacity:.4}.opacity-50{opacity:.5}.opacity-60{opacity:.6}.opacity-70{opacity:.7}.opacity-75{opacity:.75}.opacity-80{opacity:.8}.opacity-90{opacity:.9}.opacity-100{opacity:1}.\!shadow-\[var\(--ec-shadow-card\)\]{--tw-shadow:var(--ec-shadow-card)!important;box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)!important}.shadow{--tw-shadow:0 1px 3px 0 var(--tw-shadow-color,#0000001a), 0 1px 2px -1px var(--tw-shadow-color,#0000001a);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.shadow-2xl{--tw-shadow:0 25px 50px -12px var(--tw-shadow-color,#00000040);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-brand\)_50\%\,transparent\)\]{--tw-shadow:0 0 8px var(--tw-shadow-color,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-brand\)_50\%\,transparent\)\]{--tw-shadow:0 0 8px var(--tw-shadow-color,color-mix(in srgb,var(--ec-brand) 50%,transparent))}}.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-brand\)_50\%\,transparent\)\]{box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_35\%\,transparent\)\]{--tw-shadow:0 0 8px var(--tw-shadow-color,var(--ec-chip-critical-text))}@supports (color:color-mix(in lab, red, red)){.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_35\%\,transparent\)\]{--tw-shadow:0 0 8px var(--tw-shadow-color,color-mix(in srgb,var(--ec-chip-critical-text) 35%,transparent))}}.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_35\%\,transparent\)\]{box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_50\%\,transparent\)\]{--tw-shadow:0 0 8px var(--tw-shadow-color,var(--ec-chip-critical-text))}@supports (color:color-mix(in lab, red, red)){.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_50\%\,transparent\)\]{--tw-shadow:0 0 8px var(--tw-shadow-color,color-mix(in srgb,var(--ec-chip-critical-text) 50%,transparent))}}.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_50\%\,transparent\)\]{box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_60\%\,transparent\)\]{--tw-shadow:0 0 8px var(--tw-shadow-color,var(--ec-chip-critical-text))}@supports (color:color-mix(in lab, red, red)){.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_60\%\,transparent\)\]{--tw-shadow:0 0 8px var(--tw-shadow-color,color-mix(in srgb,var(--ec-chip-critical-text) 60%,transparent))}}.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_60\%\,transparent\)\]{box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-sampled-text\)_50\%\,transparent\)\]{--tw-shadow:0 0 8px var(--tw-shadow-color,var(--ec-chip-sampled-text))}@supports (color:color-mix(in lab, red, red)){.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-sampled-text\)_50\%\,transparent\)\]{--tw-shadow:0 0 8px var(--tw-shadow-color,color-mix(in srgb,var(--ec-chip-sampled-text) 50%,transparent))}}.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-sampled-text\)_50\%\,transparent\)\]{box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-success-text\)_60\%\,transparent\)\]{--tw-shadow:0 0 8px var(--tw-shadow-color,var(--ec-chip-success-text))}@supports (color:color-mix(in lab, red, red)){.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-success-text\)_60\%\,transparent\)\]{--tw-shadow:0 0 8px var(--tw-shadow-color,color-mix(in srgb,var(--ec-chip-success-text) 60%,transparent))}}.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-success-text\)_60\%\,transparent\)\]{box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-warning-text\)_50\%\,transparent\)\]{--tw-shadow:0 0 8px var(--tw-shadow-color,var(--ec-chip-warning-text))}@supports (color:color-mix(in lab, red, red)){.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-warning-text\)_50\%\,transparent\)\]{--tw-shadow:0 0 8px var(--tw-shadow-color,color-mix(in srgb,var(--ec-chip-warning-text) 50%,transparent))}}.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-warning-text\)_50\%\,transparent\)\]{box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-warning-text\)_60\%\,transparent\)\]{--tw-shadow:0 0 8px var(--tw-shadow-color,var(--ec-chip-warning-text))}@supports (color:color-mix(in lab, red, red)){.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-warning-text\)_60\%\,transparent\)\]{--tw-shadow:0 0 8px var(--tw-shadow-color,color-mix(in srgb,var(--ec-chip-warning-text) 60%,transparent))}}.shadow-\[0_0_8px_color-mix\(in_srgb\,var\(--ec-chip-warning-text\)_60\%\,transparent\)\]{box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.shadow-\[0_0_12px_currentColor\]{--tw-shadow:0 0 12px var(--tw-shadow-color,currentColor);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.shadow-\[0_1px_2px_rgba\(0\,0\,0\,0\.12\)\]{--tw-shadow:0 1px 2px var(--tw-shadow-color,#0000001f);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.shadow-\[inset_0_1px_2px_color-mix\(in_srgb\,var\(--ec-text-primary\)_8\%\,transparent\)\]{--tw-shadow:inset 0 1px 2px var(--tw-shadow-color,var(--ec-text-primary))}@supports (color:color-mix(in lab, red, red)){.shadow-\[inset_0_1px_2px_color-mix\(in_srgb\,var\(--ec-text-primary\)_8\%\,transparent\)\]{--tw-shadow:inset 0 1px 2px var(--tw-shadow-color,color-mix(in srgb,var(--ec-text-primary) 8%,transparent))}}.shadow-\[inset_0_1px_2px_color-mix\(in_srgb\,var\(--ec-text-primary\)_8\%\,transparent\)\]{box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.shadow-\[var\(--ec-card-hover-shadow\)\]{--tw-shadow:var(--ec-card-hover-shadow);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.shadow-\[var\(--ec-card-shadow\)\]{--tw-shadow:var(--ec-card-shadow);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.shadow-\[var\(--ec-shadow-elevation-2\)\]{--tw-shadow:var(--ec-shadow-elevation-2);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.shadow-lg{--tw-shadow:0 10px 15px -3px var(--tw-shadow-color,#0000001a), 0 4px 6px -4px var(--tw-shadow-color,#0000001a);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.shadow-sm{--tw-shadow:0 1px 3px 0 var(--tw-shadow-color,#0000001a), 0 1px 2px -1px var(--tw-shadow-color,#0000001a);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.ring,.ring-1{--tw-ring-shadow:var(--tw-ring-inset,) 0 0 0 calc(1px + var(--tw-ring-offset-width)) var(--tw-ring-color,currentcolor);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.ring-2{--tw-ring-shadow:var(--tw-ring-inset,) 0 0 0 calc(2px + var(--tw-ring-offset-width)) var(--tw-ring-color,currentcolor);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.ring-\[var\(--ec-border\)\]{--tw-ring-color:var(--ec-border)}.ring-\[var\(--ec-brand\)\]{--tw-ring-color:var(--ec-brand)}.ring-offset-2{--tw-ring-offset-width:2px;--tw-ring-offset-shadow:var(--tw-ring-inset,) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color)}.ring-offset-\[var\(--ec-bg\)\]{--tw-ring-offset-color:var(--ec-bg)}.outline{outline-style:var(--tw-outline-style);outline-width:1px}.blur{--tw-blur:blur(8px);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.blur-3xl{--tw-blur:blur(var(--blur-3xl));filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.blur-\[80px\]{--tw-blur:blur(80px);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.blur-\[90px\]{--tw-blur:blur(90px);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.blur-\[100px\]{--tw-blur:blur(100px);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.blur-sm{--tw-blur:blur(var(--blur-sm));filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.invert{--tw-invert:invert(100%);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.filter{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.backdrop-blur{--tw-backdrop-blur:blur(8px);-webkit-backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,)}.backdrop-blur-2xl{--tw-backdrop-blur:blur(var(--blur-2xl));-webkit-backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,)}.backdrop-blur-sm{--tw-backdrop-blur:blur(var(--blur-sm));-webkit-backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,)}.backdrop-blur-xl{--tw-backdrop-blur:blur(var(--blur-xl));-webkit-backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,)}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-\[border-color\,transform\,box-shadow\]{transition-property:border-color,transform,box-shadow;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-\[box-shadow\,transform\,background-color\]{transition-property:box-shadow,transform,background-color;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-\[filter\]{transition-property:filter;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-\[width\]{transition-property:width;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-all{transition-property:all;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-colors{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-opacity{transition-property:opacity;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-shadow{transition-property:box-shadow;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-transform{transition-property:transform,translate,scale,rotate;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.duration-180{--tw-duration:.18s;transition-duration:.18s}.duration-200{--tw-duration:.2s;transition-duration:.2s}.duration-300{--tw-duration:.3s;transition-duration:.3s}.duration-500{--tw-duration:.5s;transition-duration:.5s}.duration-700{--tw-duration:.7s;transition-duration:.7s}.ease-in-out{--tw-ease:var(--ease-in-out);transition-timing-function:var(--ease-in-out)}.will-change-transform{will-change:transform}.outline-none{--tw-outline-style:none;outline-style:none}.select-none{-webkit-user-select:none;user-select:none}.\[-ms-overflow-style\:none\]{-ms-overflow-style:none}.paused{animation-play-state:paused}.running{animation-play-state:running}.group-open\:no-underline:is(:where(.group):is([open],:popover-open,:open) *){text-decoration-line:none}@media (hover:hover){.group-hover\:translate-x-0\.5:is(:where(.group):hover *){--tw-translate-x:calc(var(--spacing) * .5);translate:var(--tw-translate-x) var(--tw-translate-y)}.group-hover\:translate-x-1:is(:where(.group):hover *){--tw-translate-x:calc(var(--spacing) * 1);translate:var(--tw-translate-x) var(--tw-translate-y)}.group-hover\:rotate-12:is(:where(.group):hover *){rotate:12deg}.group-hover\:text-\[var\(--ec-brand\)\]:is(:where(.group):hover *){color:var(--ec-brand)}.group-hover\:text-\[var\(--ec-text-primary\)\]:is(:where(.group):hover *){color:var(--ec-text-primary)}.group-hover\:opacity-50:is(:where(.group):hover *){opacity:.5}.group-hover\/tilt\:opacity-100:is(:where(.group\/tilt):hover *){opacity:1}}.group-data-\[disabled\=true\]\:pointer-events-none:is(:where(.group)[data-disabled=true] *){pointer-events:none}.group-data-\[disabled\=true\]\:opacity-50:is(:where(.group)[data-disabled=true] *){opacity:.5}.peer-disabled\:cursor-not-allowed:is(:where(.peer):disabled~*){cursor:not-allowed}.peer-disabled\:opacity-50:is(:where(.peer):disabled~*){opacity:.5}.marker\:content-none ::marker{--tw-content:none;content:none}.marker\:content-none::marker{--tw-content:none;content:none}.marker\:content-none ::-webkit-details-marker{--tw-content:none;content:none}.marker\:content-none::-webkit-details-marker{--tw-content:none;content:none}.file\:inline-flex::file-selector-button{display:inline-flex}.file\:h-6::file-selector-button{height:calc(var(--spacing) * 6)}.file\:border-0::file-selector-button{border-style:var(--tw-border-style);border-width:0}.file\:bg-transparent::file-selector-button{background-color:#0000}.file\:text-sm::file-selector-button{font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height))}.file\:font-medium::file-selector-button{--tw-font-weight:var(--font-weight-medium);font-weight:var(--font-weight-medium)}.file\:text-foreground::file-selector-button{color:var(--foreground)}.placeholder\:text-muted-foreground::placeholder{color:var(--ec-text-secondary)}.before\:absolute:before{content:var(--tw-content);position:absolute}.before\:-inset-1\.5:before{content:var(--tw-content);inset:calc(var(--spacing) * -1.5)}.before\:content-\[\'\'\]:before{--tw-content:"";content:var(--tw-content)}.last\:mb-0:last-child{margin-bottom:calc(var(--spacing) * 0)}.open\:bg-\[var\(--ec-surface-raised\)\]:is([open],:popover-open,:open){background-color:var(--ec-surface-raised)}@media (hover:hover){.hover\:-translate-y-0\.5:hover{--tw-translate-y:calc(var(--spacing) * -.5);translate:var(--tw-translate-x) var(--tw-translate-y)}.hover\:-translate-y-1:hover{--tw-translate-y:calc(var(--spacing) * -1);translate:var(--tw-translate-x) var(--tw-translate-y)}.hover\:scale-\[1\.01\]:hover{scale:1.01}.hover\:scale-\[1\.03\]:hover{scale:1.03}.hover\:border-\[color-mix\(in_srgb\,var\(--ec-brand\)_30\%\,transparent\)\]:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.hover\:border-\[color-mix\(in_srgb\,var\(--ec-brand\)_30\%\,transparent\)\]:hover{border-color:color-mix(in srgb,var(--ec-brand) 30%,transparent)}}.hover\:border-\[color-mix\(in_srgb\,var\(--ec-brand\)_35\%\,var\(--ec-border\)\)\]:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.hover\:border-\[color-mix\(in_srgb\,var\(--ec-brand\)_35\%\,var\(--ec-border\)\)\]:hover{border-color:color-mix(in srgb,var(--ec-brand) 35%,var(--ec-border))}}.hover\:border-\[color-mix\(in_srgb\,var\(--ec-brand\)_40\%\,transparent\)\]:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.hover\:border-\[color-mix\(in_srgb\,var\(--ec-brand\)_40\%\,transparent\)\]:hover{border-color:color-mix(in srgb,var(--ec-brand) 40%,transparent)}}.hover\:border-\[color-mix\(in_srgb\,var\(--ec-brand\)_50\%\,transparent\)\]:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.hover\:border-\[color-mix\(in_srgb\,var\(--ec-brand\)_50\%\,transparent\)\]:hover{border-color:color-mix(in srgb,var(--ec-brand) 50%,transparent)}}.hover\:border-\[color-mix\(in_srgb\,var\(--ec-brand\)_50\%\,var\(--ec-border\)\)\]:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.hover\:border-\[color-mix\(in_srgb\,var\(--ec-brand\)_50\%\,var\(--ec-border\)\)\]:hover{border-color:color-mix(in srgb,var(--ec-brand) 50%,var(--ec-border))}}.hover\:border-\[color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_50\%\,transparent\)\]:hover{border-color:var(--ec-chip-critical-text)}@supports (color:color-mix(in lab, red, red)){.hover\:border-\[color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_50\%\,transparent\)\]:hover{border-color:color-mix(in srgb,var(--ec-chip-critical-text) 50%,transparent)}}.hover\:border-\[color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_60\%\,transparent\)\]:hover{border-color:var(--ec-chip-critical-text)}@supports (color:color-mix(in lab, red, red)){.hover\:border-\[color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_60\%\,transparent\)\]:hover{border-color:color-mix(in srgb,var(--ec-chip-critical-text) 60%,transparent)}}.hover\:border-\[var\(--course-accent\)\]:hover{border-color:var(--course-accent)}.hover\:border-\[var\(--ec-accent\)\]:hover{border-color:var(--ec-accent)}.hover\:border-\[var\(--ec-brand\)\]:hover,.hover\:border-\[var\(--ec-brand\)\]\/40:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.hover\:border-\[var\(--ec-brand\)\]\/40:hover{border-color:color-mix(in oklab, var(--ec-brand) 40%, transparent)}}.hover\:border-\[var\(--ec-brand\)\]\/50:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.hover\:border-\[var\(--ec-brand\)\]\/50:hover{border-color:color-mix(in oklab, var(--ec-brand) 50%, transparent)}}.hover\:bg-\[\#f8f9fa\]:hover{background-color:#f8f9fa}.hover\:bg-\[color-mix\(in_srgb\,var\(--course-subject-accent\,var\(--ec-brand\)\)_8\%\,var\(--ec-surface-muted\)\)\]:hover{background-color:var(--course-subject-accent,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.hover\:bg-\[color-mix\(in_srgb\,var\(--course-subject-accent\,var\(--ec-brand\)\)_8\%\,var\(--ec-surface-muted\)\)\]:hover{background-color:color-mix(in srgb,var(--course-subject-accent,var(--ec-brand)) 8%,var(--ec-surface-muted))}}.hover\:bg-\[var\(--ec-bg-soft\)\]:hover{background-color:var(--ec-bg-soft)}.hover\:bg-\[var\(--ec-brand-muted\)\]:hover{background-color:var(--ec-brand-muted)}.hover\:bg-\[var\(--ec-chip-critical-bg\)\]:hover{background-color:var(--ec-chip-critical-bg)}.hover\:bg-\[var\(--ec-surface-muted\)\]:hover{background-color:var(--ec-surface-muted)}.hover\:bg-\[var\(--ec-surface-raised\)\]:hover{background-color:var(--ec-surface-raised)}.hover\:text-\[var\(--ec-accent\)\]:hover{color:var(--ec-accent)}.hover\:text-\[var\(--ec-brand\)\]:hover{color:var(--ec-brand)}.hover\:text-\[var\(--ec-chip-critical-text\)\]:hover{color:var(--ec-chip-critical-text)}.hover\:text-\[var\(--ec-notebook-ink\)\]:hover{color:var(--ec-notebook-ink)}.hover\:text-\[var\(--ec-text-primary\)\]:hover{color:var(--ec-text-primary)}.hover\:text-\[var\(--ec-text-secondary\)\]:hover{color:var(--ec-text-secondary)}.hover\:underline:hover{text-decoration-line:underline}.hover\:opacity-80:hover{opacity:.8}.hover\:opacity-90:hover{opacity:.9}.hover\:opacity-95:hover{opacity:.95}.hover\:shadow-\[0_2px_6px_rgba\(0\,0\,0\,0\.18\)\]:hover{--tw-shadow:0 2px 6px var(--tw-shadow-color,#0000002e);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.hover\:shadow-\[0_8px_20px_-4px_rgba\(0\,0\,0\,0\.15\)\]:hover{--tw-shadow:0 8px 20px -4px var(--tw-shadow-color,#00000026);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.hover\:shadow-\[0_10px_40px_color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_18\%\,transparent\)\]:hover{--tw-shadow:0 10px 40px var(--tw-shadow-color,var(--ec-chip-critical-text))}@supports (color:color-mix(in lab, red, red)){.hover\:shadow-\[0_10px_40px_color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_18\%\,transparent\)\]:hover{--tw-shadow:0 10px 40px var(--tw-shadow-color,color-mix(in srgb,var(--ec-chip-critical-text) 18%,transparent))}}.hover\:shadow-\[0_10px_40px_color-mix\(in_srgb\,var\(--ec-chip-critical-text\)_18\%\,transparent\)\]:hover{box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.hover\:shadow-\[0_10px_40px_color-mix\(in_srgb\,var\(--ec-chip-success-text\)_18\%\,transparent\)\]:hover{--tw-shadow:0 10px 40px var(--tw-shadow-color,var(--ec-chip-success-text))}@supports (color:color-mix(in lab, red, red)){.hover\:shadow-\[0_10px_40px_color-mix\(in_srgb\,var\(--ec-chip-success-text\)_18\%\,transparent\)\]:hover{--tw-shadow:0 10px 40px var(--tw-shadow-color,color-mix(in srgb,var(--ec-chip-success-text) 18%,transparent))}}.hover\:shadow-\[0_10px_40px_color-mix\(in_srgb\,var\(--ec-chip-success-text\)_18\%\,transparent\)\]:hover{box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.hover\:shadow-\[0_10px_40px_color-mix\(in_srgb\,var\(--ec-chip-warning-text\)_18\%\,transparent\)\]:hover{--tw-shadow:0 10px 40px var(--tw-shadow-color,var(--ec-chip-warning-text))}@supports (color:color-mix(in lab, red, red)){.hover\:shadow-\[0_10px_40px_color-mix\(in_srgb\,var\(--ec-chip-warning-text\)_18\%\,transparent\)\]:hover{--tw-shadow:0 10px 40px var(--tw-shadow-color,color-mix(in srgb,var(--ec-chip-warning-text) 18%,transparent))}}.hover\:shadow-\[0_10px_40px_color-mix\(in_srgb\,var\(--ec-chip-warning-text\)_18\%\,transparent\)\]:hover{box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.hover\:shadow-\[var\(--ec-shadow-paper\)\]:hover{--tw-shadow:var(--ec-shadow-paper);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}}.focus\:not-sr-only:focus{clip-path:none;white-space:normal;width:auto;height:auto;margin:0;padding:0;position:static;overflow:visible}.focus\:fixed:focus{position:fixed}.focus\:top-4:focus{top:calc(var(--spacing) * 4)}.focus\:left-4:focus{left:calc(var(--spacing) * 4)}.focus\:z-\[100\]:focus{z-index:100}.focus\:rounded-xl:focus{border-radius:calc(var(--radius) * 1.4)}.focus\:bg-\[var\(--ec-brand\)\]:focus{background-color:var(--ec-brand)}.focus\:px-4:focus{padding-inline:calc(var(--spacing) * 4)}.focus\:py-2:focus{padding-block:calc(var(--spacing) * 2)}.focus\:font-semibold:focus{--tw-font-weight:var(--font-weight-semibold);font-weight:var(--font-weight-semibold)}.focus\:text-\[var\(--ec-on-brand-text\)\]:focus{color:var(--ec-on-brand-text)}.focus-visible\:border-ring:focus-visible{border-color:var(--ring)}.focus-visible\:ring-3:focus-visible{--tw-ring-shadow:var(--tw-ring-inset,) 0 0 0 calc(3px + var(--tw-ring-offset-width)) var(--tw-ring-color,currentcolor);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.focus-visible\:ring-ring\/50:focus-visible{--tw-ring-color:var(--ring)}@supports (color:color-mix(in lab, red, red)){.focus-visible\:ring-ring\/50:focus-visible{--tw-ring-color:color-mix(in oklab, var(--ring) 50%, transparent)}}.focus-visible\:outline:focus-visible{outline-style:var(--tw-outline-style);outline-width:1px}.focus-visible\:outline-2:focus-visible{outline-style:var(--tw-outline-style);outline-width:2px}.focus-visible\:outline-offset-2:focus-visible{outline-offset:2px}.focus-visible\:outline-\[var\(--ec-brand\)\]:focus-visible{outline-color:var(--ec-brand)}.active\:scale-95:active{--tw-scale-x:95%;--tw-scale-y:95%;--tw-scale-z:95%;scale:var(--tw-scale-x) var(--tw-scale-y)}.active\:scale-\[0\.98\]:active{scale:.98}.active\:scale-\[0\.99\]:active{scale:.99}.active\:cursor-grabbing:active{cursor:grabbing}.disabled\:pointer-events-none:disabled{pointer-events:none}.disabled\:cursor-not-allowed:disabled{cursor:not-allowed}.disabled\:bg-input\/50:disabled{background-color:var(--input)}@supports (color:color-mix(in lab, red, red)){.disabled\:bg-input\/50:disabled{background-color:color-mix(in oklab, var(--input) 50%, transparent)}}.disabled\:opacity-30:disabled{opacity:.3}.disabled\:opacity-50:disabled{opacity:.5}.disabled\:opacity-60:disabled{opacity:.6}.disabled\:active\:scale-100:disabled:active{--tw-scale-x:100%;--tw-scale-y:100%;--tw-scale-z:100%;scale:var(--tw-scale-x) var(--tw-scale-y)}.aria-invalid\:border-destructive[aria-invalid=true]{border-color:var(--destructive)}.aria-invalid\:ring-3[aria-invalid=true]{--tw-ring-shadow:var(--tw-ring-inset,) 0 0 0 calc(3px + var(--tw-ring-offset-width)) var(--tw-ring-color,currentcolor);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.aria-invalid\:ring-destructive\/20[aria-invalid=true]{--tw-ring-color:var(--destructive)}@supports (color:color-mix(in lab, red, red)){.aria-invalid\:ring-destructive\/20[aria-invalid=true]{--tw-ring-color:color-mix(in oklab, var(--destructive) 20%, transparent)}}@media not all and (min-width:420px){.max-\[420px\]\:hidden{display:none}.max-\[420px\]\:gap-1\.5{gap:calc(var(--spacing) * 1.5)}.max-\[420px\]\:text-sm{font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height))}}@media (min-width:420px){.min-\[420px\]\:hidden{display:none}.min-\[420px\]\:inline{display:inline}}@media (min-width:480px){.min-\[480px\]\:hidden{display:none}.min-\[480px\]\:inline{display:inline}}@media (min-width:901px){.min-\[901px\]\:grid{display:grid}.min-\[901px\]\:hidden{display:none}.min-\[901px\]\:inline-flex{display:inline-flex}}@media (min-width:40rem){.sm\:absolute{position:absolute}.sm\:inset-auto{inset:auto}.sm\:top-4{top:calc(var(--spacing) * 4)}.sm\:top-full{top:100%}.sm\:right-0{right:calc(var(--spacing) * 0)}.sm\:right-4{right:calc(var(--spacing) * 4)}.sm\:col-span-2{grid-column:span 2/span 2}.sm\:mx-0{margin-inline:calc(var(--spacing) * 0)}.sm\:mt-2{margin-top:calc(var(--spacing) * 2)}.sm\:mb-10{margin-bottom:calc(var(--spacing) * 10)}.sm\:mb-12{margin-bottom:calc(var(--spacing) * 12)}.sm\:flex{display:flex}.sm\:hidden{display:none}.sm\:inline{display:inline}.sm\:inline-flex{display:inline-flex}.sm\:h-3{height:calc(var(--spacing) * 3)}.sm\:h-14{height:calc(var(--spacing) * 14)}.sm\:h-28{height:calc(var(--spacing) * 28)}.sm\:h-80{height:calc(var(--spacing) * 80)}.sm\:max-h-\[85vh\]{max-height:85vh}.sm\:max-h-none{max-height:none}.sm\:w-3{width:calc(var(--spacing) * 3)}.sm\:w-12{width:calc(var(--spacing) * 12)}.sm\:w-20{width:calc(var(--spacing) * 20)}.sm\:w-72{width:calc(var(--spacing) * 72)}.sm\:w-auto{width:auto}.sm\:max-w-md{max-width:var(--container-md)}.sm\:max-w-xs{max-width:var(--container-xs)}.sm\:min-w-\[8\.5rem\]{min-width:8.5rem}.sm\:min-w-\[220px\]{min-width:220px}.sm\:grid-cols-1{grid-template-columns:repeat(1,minmax(0,1fr))}.sm\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.sm\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.sm\:grid-cols-\[10rem_1fr\]{grid-template-columns:10rem 1fr}.sm\:flex-row{flex-direction:row}.sm\:flex-wrap{flex-wrap:wrap}.sm\:items-center{align-items:center}.sm\:items-end{align-items:flex-end}.sm\:justify-between{justify-content:space-between}.sm\:justify-center{justify-content:center}.sm\:justify-end{justify-content:flex-end}.sm\:justify-start{justify-content:flex-start}.sm\:gap-2{gap:calc(var(--spacing) * 2)}.sm\:gap-3{gap:calc(var(--spacing) * 3)}.sm\:gap-4{gap:calc(var(--spacing) * 4)}:where(.sm\:space-y-8>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 8) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 8) * calc(1 - var(--tw-space-y-reverse)))}:where(.sm\:space-y-32>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 32) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 32) * calc(1 - var(--tw-space-y-reverse)))}.sm\:self-auto{align-self:auto}.sm\:self-start{align-self:flex-start}.sm\:rounded-2xl{border-radius:calc(var(--radius) * 1.8)}.sm\:\[mask-image\:none\]{-webkit-mask-image:none;mask-image:none}.sm\:p-0{padding:calc(var(--spacing) * 0)}.sm\:p-2\.5{padding:calc(var(--spacing) * 2.5)}.sm\:p-4{padding:calc(var(--spacing) * 4)}.sm\:p-5{padding:calc(var(--spacing) * 5)}.sm\:p-6{padding:calc(var(--spacing) * 6)}.sm\:p-7{padding:calc(var(--spacing) * 7)}.sm\:p-8{padding:calc(var(--spacing) * 8)}.sm\:p-10{padding:calc(var(--spacing) * 10)}.sm\:p-12{padding:calc(var(--spacing) * 12)}.sm\:px-0{padding-inline:calc(var(--spacing) * 0)}.sm\:px-3\.5{padding-inline:calc(var(--spacing) * 3.5)}.sm\:px-4{padding-inline:calc(var(--spacing) * 4)}.sm\:px-6{padding-inline:calc(var(--spacing) * 6)}.sm\:px-10{padding-inline:calc(var(--spacing) * 10)}.sm\:py-3{padding-block:calc(var(--spacing) * 3)}.sm\:py-5{padding-block:calc(var(--spacing) * 5)}.sm\:py-6{padding-block:calc(var(--spacing) * 6)}.sm\:py-8{padding-block:calc(var(--spacing) * 8)}.sm\:py-10{padding-block:calc(var(--spacing) * 10)}.sm\:py-16{padding-block:calc(var(--spacing) * 16)}.sm\:py-20{padding-block:calc(var(--spacing) * 20)}.sm\:pt-0{padding-top:calc(var(--spacing) * 0)}.sm\:pt-8{padding-top:calc(var(--spacing) * 8)}.sm\:pt-\[calc\(1rem\+env\(safe-area-inset-top\,0px\)\)\]{padding-top:calc(1rem + env(safe-area-inset-top,0px))}.sm\:pb-6{padding-bottom:calc(var(--spacing) * 6)}.sm\:text-left{text-align:left}.sm\:text-2xl{font-size:var(--text-2xl);line-height:var(--tw-leading,var(--text-2xl--line-height))}.sm\:text-3xl{font-size:var(--text-3xl);line-height:var(--tw-leading,var(--text-3xl--line-height))}.sm\:text-4xl{font-size:var(--text-4xl);line-height:var(--tw-leading,var(--text-4xl--line-height))}.sm\:text-7xl{font-size:var(--text-7xl);line-height:var(--tw-leading,var(--text-7xl--line-height))}.sm\:text-base{font-size:var(--text-base);line-height:var(--tw-leading,var(--text-base--line-height))}.sm\:text-lg{font-size:var(--text-lg);line-height:var(--tw-leading,var(--text-lg--line-height))}.sm\:text-xl{font-size:var(--text-xl);line-height:var(--tw-leading,var(--text-xl--line-height))}.sm\:text-xs{font-size:var(--text-xs);line-height:var(--tw-leading,var(--text-xs--line-height))}.sm\:text-\[2rem\]{font-size:2rem}}@media (min-width:48rem){.md\:absolute{position:absolute}.md\:top-0{top:calc(var(--spacing) * 0)}.md\:right-0{right:calc(var(--spacing) * 0)}.md\:col-span-2{grid-column:span 2/span 2}.md\:mt-0{margin-top:calc(var(--spacing) * 0)}.md\:mt-8{margin-top:calc(var(--spacing) * 8)}.md\:mt-24{margin-top:calc(var(--spacing) * 24)}.md\:block{display:block}.md\:flex{display:flex}.md\:hidden{display:none}.md\:inline-flex{display:inline-flex}.md\:h-96{height:calc(var(--spacing) * 96)}.md\:h-\[80vh\]{height:80vh}.md\:min-h-\[420px\]{min-height:420px}.md\:w-\[40\%\]{width:40%}.md\:w-\[440px\]{width:440px}.md\:w-\[680px\]{width:680px}.md\:w-auto{width:auto}.md\:max-w-\[9rem\]{max-width:9rem}.md\:max-w-\[720px\]{max-width:720px}.md\:flex-1{flex:1}.md\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.md\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.md\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.md\:flex-row{flex-direction:row}.md\:items-center{align-items:center}.md\:gap-8{gap:calc(var(--spacing) * 8)}.md\:self-auto{align-self:auto}.md\:rounded-3xl{border-radius:calc(var(--radius) * 2.2)}.md\:p-6{padding:calc(var(--spacing) * 6)}.md\:p-8{padding:calc(var(--spacing) * 8)}.md\:p-10{padding:calc(var(--spacing) * 10)}.md\:px-3{padding-inline:calc(var(--spacing) * 3)}.md\:px-8{padding-inline:calc(var(--spacing) * 8)}.md\:py-10{padding-block:calc(var(--spacing) * 10)}.md\:pt-32{padding-top:calc(var(--spacing) * 32)}.md\:pr-44{padding-right:calc(var(--spacing) * 44)}.md\:pb-36{padding-bottom:calc(var(--spacing) * 36)}.md\:text-right{text-align:right}.md\:text-sm{font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height))}.md\:text-\[16px\]{font-size:16px}.md\:text-\[26px\]{font-size:26px}.md\:text-\[32px\]{font-size:32px}.md\:text-\[112px\]{font-size:112px}}@media (min-width:64rem){.lg\:relative{position:relative}.lg\:inset-auto{inset:auto}.lg\:bottom-6{bottom:calc(var(--spacing) * 6)}.lg\:z-auto{z-index:auto}.lg\:order-1{order:1}.lg\:order-2{order:2}.lg\:col-span-1{grid-column:span 1/span 1}.lg\:col-span-2{grid-column:span 2/span 2}.lg\:col-span-3{grid-column:span 3/span 3}.lg\:mt-10{margin-top:calc(var(--spacing) * 10)}.lg\:mb-10{margin-bottom:calc(var(--spacing) * 10)}.lg\:block{display:block}.lg\:hidden{display:none}.lg\:w-\[220px\]{width:220px}.lg\:max-w-\[860px\]{max-width:860px}.lg\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.lg\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.lg\:grid-cols-5{grid-template-columns:repeat(5,minmax(0,1fr))}.lg\:grid-cols-\[0\.9fr_1\.1fr\]{grid-template-columns:.9fr 1.1fr}.lg\:grid-cols-\[1\.1fr_0\.9fr\]{grid-template-columns:1.1fr .9fr}.lg\:grid-cols-\[240px_1fr\]{grid-template-columns:240px 1fr}.lg\:flex-row{flex-direction:row}.lg\:flex-wrap{flex-wrap:wrap}.lg\:items-start{align-items:flex-start}.lg\:gap-10{gap:calc(var(--spacing) * 10)}.lg\:gap-16{gap:calc(var(--spacing) * 16)}.lg\:overflow-visible{overflow:visible}.lg\:rounded-3xl{border-radius:calc(var(--radius) * 2.2)}.lg\:bg-transparent{background-color:#0000}.lg\:\[mask-image\:none\]{-webkit-mask-image:none;mask-image:none}.lg\:p-0{padding:calc(var(--spacing) * 0)}.lg\:p-8{padding:calc(var(--spacing) * 8)}.lg\:px-8{padding-inline:calc(var(--spacing) * 8)}.lg\:py-14{padding-block:calc(var(--spacing) * 14)}.lg\:pt-0{padding-top:calc(var(--spacing) * 0)}.lg\:pr-4{padding-right:calc(var(--spacing) * 4)}.lg\:pb-0{padding-bottom:calc(var(--spacing) * 0)}.lg\:pb-5{padding-bottom:calc(var(--spacing) * 5)}.lg\:pl-4{padding-left:calc(var(--spacing) * 4)}.lg\:text-left{text-align:left}.lg\:backdrop-blur-xl{--tw-backdrop-blur:blur(var(--blur-xl));-webkit-backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,)}}@media (min-width:80rem){.xl\:block{display:block}.xl\:hidden{display:none}}.dark\:bg-input\/30:is(.dark *){background-color:var(--input)}@supports (color:color-mix(in lab, red, red)){.dark\:bg-input\/30:is(.dark *){background-color:color-mix(in oklab, var(--input) 30%, transparent)}}.dark\:disabled\:bg-input\/80:is(.dark *):disabled{background-color:var(--input)}@supports (color:color-mix(in lab, red, red)){.dark\:disabled\:bg-input\/80:is(.dark *):disabled{background-color:color-mix(in oklab, var(--input) 80%, transparent)}}.dark\:aria-invalid\:border-destructive\/50:is(.dark *)[aria-invalid=true]{border-color:var(--destructive)}@supports (color:color-mix(in lab, red, red)){.dark\:aria-invalid\:border-destructive\/50:is(.dark *)[aria-invalid=true]{border-color:color-mix(in oklab, var(--destructive) 50%, transparent)}}.dark\:aria-invalid\:ring-destructive\/40:is(.dark *)[aria-invalid=true]{--tw-ring-color:var(--destructive)}@supports (color:color-mix(in lab, red, red)){.dark\:aria-invalid\:ring-destructive\/40:is(.dark *)[aria-invalid=true]{--tw-ring-color:color-mix(in oklab, var(--destructive) 40%, transparent)}}.\[\&\:\:-webkit-details-marker\]\:hidden::-webkit-details-marker{display:none}.\[\&\:\:-webkit-scrollbar\]\:hidden::-webkit-scrollbar{display:none}}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(../media/KaTeX_AMS-Regular.0p1vbqd84i2~o.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_AMS-Regular.0b~8ki5y928w2.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_AMS-Regular.173t6ktr7uf-w.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(../media/KaTeX_Caligraphic-Bold.01-pzluls4zgb.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_Caligraphic-Bold.0x2v1lwn~880f.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_Caligraphic-Bold.16zv5fax0h0ka.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(../media/KaTeX_Caligraphic-Regular.0rysu1t-ncjq8.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_Caligraphic-Regular.10927swgekwun.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_Caligraphic-Regular.02i3z7wig438t.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(../media/KaTeX_Fraktur-Bold.0w23i72~hprpq.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_Fraktur-Bold.0e-16u10iuyyf.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_Fraktur-Bold.0et27v~3~4uhe.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(../media/KaTeX_Fraktur-Regular.0rekyoa-52fj_.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_Fraktur-Regular.0b.riegzdfue2.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_Fraktur-Regular.0vjwa15znhk~4.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(../media/KaTeX_Main-Bold.16pfc63_du6mx.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_Main-Bold.09lmynrorhcbw.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_Main-Bold.09i7~607shf-h.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(../media/KaTeX_Main-BoldItalic.0d54rk08rx11s.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_Main-BoldItalic.0cp37g7x1q8h6.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_Main-BoldItalic.15j6k~hix2t_0.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(../media/KaTeX_Main-Italic.06o5nq0_91v60.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_Main-Italic.0382gqciexmbu.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_Main-Italic.0su4i6mm18-wo.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(../media/KaTeX_Main-Regular.0kaf-ag2_wkm-.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_Main-Regular.0diheg01zyoph.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_Main-Regular.08zh8z.7shijf.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(../media/KaTeX_Math-BoldItalic.0ja97dn.cpc87.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_Math-BoldItalic.0ck1myuerwyqw.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_Math-BoldItalic.0ajzxypnbx1h1.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(../media/KaTeX_Math-Italic.0zrha2c4sl2je.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_Math-Italic.09xkhecjcn5r9.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_Math-Italic.0x23a-bmp-5tg.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(../media/KaTeX_SansSerif-Bold.05a9.pc1j_zx9.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_SansSerif-Bold.0jcl-ayi1uun0.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_SansSerif-Bold.0re8y.dm7.mt5.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(../media/KaTeX_SansSerif-Italic.0a0234dc3s62j.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_SansSerif-Italic.0judofdln9731.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_SansSerif-Italic.10z1iap9pfus8.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(../media/KaTeX_SansSerif-Regular.0v6gcj32-czft.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_SansSerif-Regular.0h9yjlugq4q_e.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_SansSerif-Regular.0zm18kga42ebc.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(../media/KaTeX_Script-Regular.0c4.h-mer83d_.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_Script-Regular.0ze6v4r_-99oy.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_Script-Regular.0q14y6zkzlpob.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size1-Regular.013x6a4ierotp.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_Size1-Regular.0kidw0oi.m68o.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_Size1-Regular.0m6y-i6wfokni.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size2-Regular.0d5inmyp-tyv3.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_Size2-Regular.0blpmluwilgbg.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_Size2-Regular.0wnhnvj-.k9d5.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size3-Regular.0iukctyhw5j56.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_Size3-Regular.01h0xm_sfctj3.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_Size3-Regular.0jl8mqyf4gzpn.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(../media/KaTeX_Size4-Regular.0w3.rb_c4stzk.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_Size4-Regular.12tvaesf3.zl3.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_Size4-Regular.0wr_9l81-mu06.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(../media/KaTeX_Typewriter-Regular.0c4zdxz~8frhm.woff2?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff2"),url(../media/KaTeX_Typewriter-Regular.0cgrzn5l3kao5.woff?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("woff"),url(../media/KaTeX_Typewriter-Regular.128~qc3858otl.ttf?dpl=dpl_3Td58UsxGGkCX1bBaPLWQwoPK8Pm)format("truetype")}.katex{text-indent:0;text-rendering:auto;font:1.21em/1.2 KaTeX_Main,Times New Roman,serif;position:relative}.katex *{border-color:currentColor;-ms-high-contrast-adjust:none!important}.katex .katex-version:after{content:"0.17.0"}.katex .katex-mathml{clip-path:inset(50%);border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}.katex .katex-html>.newline{display:block}.katex .base{white-space:nowrap;width:min-content;position:relative}.katex .base,.katex .strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;table-layout:fixed;display:inline-table}.katex .vlist-r{display:table-row}.katex .vlist{vertical-align:bottom;display:table-cell;position:relative}.katex .vlist>span{height:0;display:block;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{width:0;overflow:hidden}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{vertical-align:bottom;width:2px;min-width:2px;font-size:1px;display:table-cell}.katex .vbox{flex-direction:column;align-items:baseline;display:inline-flex}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{flex-direction:row;display:inline-flex}.katex .thinbox{width:0;max-width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .hdashline,.katex .hline,.katex .mfrac .frac-line,.katex .overline .overline-line,.katex .rule,.katex .underline .underline-line{min-height:1px}.katex .mspace{display:inline-block}.katex .smash{line-height:0;display:inline}.katex .clap,.katex .llap,.katex .rlap{width:0;position:relative}.katex .clap>.inner,.katex .llap>.inner,.katex .rlap>.inner{position:absolute}.katex .clap>.fix,.katex .llap>.fix,.katex .rlap>.fix{display:inline-block}.katex .llap>.inner{right:0}.katex .clap>.inner,.katex .rlap>.inner{left:0}.katex .clap>.inner>span{margin-left:-50%;margin-right:50%}.katex .rule{border:0 solid;display:inline-block;position:relative}.katex .hline,.katex .overline .overline-line,.katex .underline .underline-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .hdashline{border-bottom-style:dashed;width:100%;display:inline-block}.katex .sqrt>.root{margin-left:.277778em;margin-right:-.555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .sizing.reset-size2.size1{font-size:.833333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .sizing.reset-size2.size3{font-size:1.16667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.33333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .sizing.reset-size2.size6{font-size:1.66667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .sizing.reset-size2.size10{font-size:3.45667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.14667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.714286em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.857143em}.katex .fontsize-ensurer.reset-size3.size3,.katex .sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .sizing.reset-size3.size4{font-size:1.14286em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.28571em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.42857em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.71429em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.05714em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.46857em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.96286em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.55429em}.katex .fontsize-ensurer.reset-size4.size1,.katex .sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .sizing.reset-size5.size1{font-size:.555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .sizing.reset-size5.size6{font-size:1.11111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.33333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .sizing.reset-size5.size10{font-size:2.30444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.76444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .sizing.reset-size7.size1{font-size:.416667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .sizing.reset-size7.size3{font-size:.583333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .sizing.reset-size7.size6{font-size:.833333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .sizing.reset-size7.size10{font-size:1.72833em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.07333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.347222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.416667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.486111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .sizing.reset-size8.size6{font-size:.694444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.833333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .sizing.reset-size8.size10{font-size:1.44028em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.72778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.289352em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.347222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.405093em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.520833em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.578704em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.694444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.833333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .sizing.reset-size9.size10{font-size:1.20023em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.43981em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.24108em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.289296em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.385728em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.433944em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.48216em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.578592em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.694311em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.833173em}.katex .fontsize-ensurer.reset-size10.size10,.katex .sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .sizing.reset-size10.size11{font-size:1.19961em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.200965em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.241158em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.281351em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.321543em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.361736em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.401929em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.482315em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.694534em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.833601em}.katex .fontsize-ensurer.reset-size11.size11,.katex .sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{width:.12em;display:inline-block}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .accent .accent-body{position:relative}.katex .accent .accent-body:not(.accent-full){width:0}.katex .overlay{display:block}.katex .mtable .vertical-separator{min-width:1px;display:inline-block}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;height:inherit;width:100%;display:block;position:absolute}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;min-width:0;max-width:none;min-height:0;max-height:none}.katex .stretchy{width:100%;display:block;position:relative;overflow:hidden}.katex .stretchy:after,.katex .stretchy:before{content:""}.katex .hide-tail{width:100%;position:relative;overflow:hidden}.katex .halfarrow-left{width:50.2%;position:absolute;left:0;overflow:hidden}.katex .halfarrow-right{width:50.2%;position:absolute;right:0;overflow:hidden}.katex .brace-left{width:25.1%;position:absolute;left:0;overflow:hidden}.katex .brace-center{width:50%;position:absolute;left:25%;overflow:hidden}.katex .brace-right{width:25.1%;position:absolute;right:0;overflow:hidden}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{box-sizing:border-box;border:.04em solid}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{box-sizing:border-box;border-top:.049em solid;border-right:.049em solid;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{text-align:left;display:inline-block;position:absolute;right:calc(50% + .3em)}.katex .cd-label-right{text-align:right;display:inline-block;position:absolute;left:calc(50% + .3em)}.katex-display{text-align:center;margin:1em 0;display:block}.katex-display>.katex{text-align:center;white-space:nowrap;display:block}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{text-align:left;padding-left:2em}body{counter-reset:katexEqnNo mmlEqnNo}@property --tw-animation-delay{syntax:"*";inherits:false;initial-value:0s}@property --tw-animation-direction{syntax:"*";inherits:false;initial-value:normal}@property --tw-animation-duration{syntax:"*";inherits:false}@property --tw-animation-fill-mode{syntax:"*";inherits:false;initial-value:none}@property --tw-animation-iteration-count{syntax:"*";inherits:false;initial-value:1}@property --tw-enter-blur{syntax:"*";inherits:false;initial-value:0}@property --tw-enter-opacity{syntax:"*";inherits:false;initial-value:1}@property --tw-enter-rotate{syntax:"*";inherits:false;initial-value:0}@property --tw-enter-scale{syntax:"*";inherits:false;initial-value:1}@property --tw-enter-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-enter-translate-y{syntax:"*";inherits:false;initial-value:0}@property --tw-exit-blur{syntax:"*";inherits:false;initial-value:0}@property --tw-exit-opacity{syntax:"*";inherits:false;initial-value:1}@property --tw-exit-rotate{syntax:"*";inherits:false;initial-value:0}@property --tw-exit-scale{syntax:"*";inherits:false;initial-value:1}@property --tw-exit-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-exit-translate-y{syntax:"*";inherits:false;initial-value:0}[data-ec-theme=late-night]{--ec-canvas:#14120d;--ec-bg-soft:#1a1711;--ec-surface:#1e1b13;--ec-surface-raised:#242016;--ec-surface-muted:#1a1711;--ec-paper:#211e14;--ec-paper-rule:#383223;--ec-border:#3a3421;--ec-border-soft:#322d1f;--ec-border-subtle:#2c2719;--ec-border-strong:#f0ead9;--ec-text-primary:#f0ead9;--ec-text-secondary:#c4bba1;--ec-text-faint:#837b64;--ec-text-reading:#ece5d4;--ec-brand:#00f5a0;--ec-brand-deep:#00f5a0;--ec-brand-muted:#00f5a01a;--ec-brand-border:#00f5a061;--ec-accent-light:#4fd1c5;--ec-brand-gradient:linear-gradient(135deg, #00f5a0 0%, #1a7575 100%);--ec-ink-crimson:#e06c6c;--ec-ink-red:#e06c6c;--ec-pen:#9eb0f5;--ec-on-brand-text:#07130d;--ec-font-handwriting:var(--font-caveat,"Caveat", "Caveat Fallback", cursive);--ec-notebook-paper:var(--ec-paper);--ec-notebook-ink:var(--ec-brand);--ec-notebook-pencil:var(--ec-pen);--ec-notebook-rule:var(--ec-paper-rule);--ec-paper-texture:none;--ec-chip-success-bg:#00f5a01a;--ec-chip-success-text:#00f5a0;--ec-chip-warning-bg:#d9b36a24;--ec-chip-warning-text:#d9b36a;--ec-chip-critical-bg:#e06c6c1f;--ec-chip-critical-text:#e06c6c;--ec-chip-neutral-bg:#837b6424;--ec-chip-neutral-text:#837b64;--ec-chip-info-bg:#8fa9f724;--ec-chip-info-text:#8fa9f7;--ec-chip-sampled-bg:#4fd1c524;--ec-chip-sampled-text:#4fd1c5;--ec-chip-accent-bg:#b5a3e824;--ec-chip-accent-text:#b5a3e8;--ec-acc-blue:#8fa9f7;--ec-acc-violet:#b5a3e8;--ec-acc-teal:#4fd1c5;--ec-acc-rose:#e788ad;--ec-acc-slate:#9aa5b4;--ec-c-math:#d9b36a;--ec-c-phys:#8fa9f7;--ec-c-chem:#b5a3e8;--ec-c-bio:#4fd1c5;--ec-c-biz:#4fd1c5;--ec-c-hum:#e788ad;--ec-c-comp:#8fa9f7;--ec-c-media:#e788ad;--ec-banner-success-bg:#00f5a01a;--ec-banner-success-border:#00f5a059;--ec-banner-success-title:#00f5a0;--ec-banner-success-meta:#4fd1c5;--ec-banner-warning-bg:#d9b36a24;--ec-banner-warning-border:#d9b36a59;--ec-banner-warning-title:#f0d49a;--ec-banner-warning-meta:#d9b36a;--ec-banner-info-bg:#8fa9f724;--ec-banner-info-border:#8fa9f759;--ec-banner-info-title:#b8c9fb;--ec-banner-info-meta:#8fa9f7;--ec-radius-card:14px;--ec-radius-button:10px;--ec-radius-pill:999px;--ec-wireframe-opacity:0;--ec-wireframe-color:0, 245, 160;--ec-btn-glow:0 10px 28px #00f5a02e;--ec-btn-glow-hover:0 14px 36px #00f5a047;--ec-card-shadow:0 6px 18px #0000004d;--ec-card-hover-shadow:0 18px 44px #00000073;--ec-shadow-hard:6px 6px 0 #00000073;--ec-shadow-elevation-1:0 6px 18px #0000004d;--ec-shadow-elevation-2:0 18px 44px #00000073;--ec-shadow-elevation-3:0 24px 56px #0000008c;--ec-touch-min:44px;--ec-z-sticky:50;--ec-z-overlay:60;--ec-z-modal:250;--ec-z-toast:100;--ec-accent-warm:#f0b465;--ec-accent-warm-deep:#ffca7a;--ec-accent-warm-soft:#f0b46524;--ec-accent-warm-border:#f0b4656b;--ec-accent-coral:#f08a72;--ec-surface-warm:#221d14;--ec-card-shadow-warm:0 8px 24px #00000057;--ec-card-hover-shadow-warm:0 20px 48px #00000080;--ec-focus-ring:0 0 0 3px #00f5a038, 0 0 0 1px var(--ec-brand);--ec-radius-card-lg:20px;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}[data-ec-theme=zen]{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--ec-canvas:#faf9f6;--ec-bg-soft:#f3f1ea;--ec-surface:#fff;--ec-surface-raised:#f6f4ee;--ec-surface-muted:#f0ede5;--ec-paper:#fff;--ec-paper-rule:#eae6dc;--ec-border:#e7e3d8;--ec-border-soft:#eae6dc;--ec-border-subtle:#edeae1;--ec-border-strong:#25221b;--ec-text-primary:#25221b;--ec-text-secondary:#5c5546;--ec-text-faint:#8d8470;--ec-text-reading:#2a261d;--ec-brand:#19774d;--ec-brand-deep:#12603f;--green-on-tint:#145e3d;--ec-brand-muted:#19774d0f;--ec-brand-border:#1e8a5e61;--ec-accent-light:#1e8a5e33;--ec-brand-gradient:linear-gradient(135deg, #19774d 0%, #17a86b 100%);--ec-ink-crimson:#a23e3e;--ec-ink-red:#a23e3e;--ec-pen:#2b3a8c;--ec-on-brand-text:#faf9f6;--ec-font-handwriting:var(--font-caveat,"Caveat", "Caveat Fallback", cursive);--ec-chip-success-bg:#1e8a5e1c;--ec-chip-success-text:#19774d;--ec-chip-warning-bg:#c4a87829;--ec-chip-warning-text:#735829;--ec-chip-critical-bg:#b0484817;--ec-chip-critical-text:#a23e3e;--ec-chip-neutral-bg:#f0ece4e6;--ec-chip-neutral-text:#8d8470;--ec-chip-info-bg:#3a5fb81f;--ec-chip-info-text:#3a5fb8;--ec-chip-sampled-bg:#1f8a8a1f;--ec-chip-sampled-text:#1a7575;--ec-chip-accent-bg:#6b5b8a1f;--ec-chip-accent-text:#6b5b8a;--ec-acc-blue:#3a5fb8;--ec-acc-violet:#6b5b8a;--ec-acc-teal:#1a7575;--ec-acc-rose:#ac5276;--ec-acc-slate:#5c6470;--ec-c-math:#735829;--ec-c-phys:#3a5fb8;--ec-c-chem:#6b5b8a;--ec-c-bio:#1a7575;--ec-c-biz:#1a7575;--ec-c-hum:#ac5276;--ec-c-comp:#3a5fb8;--ec-c-media:#ac5276;--ec-banner-success-bg:#1e8a5e1c;--ec-banner-success-border:#1e8a5e59;--ec-banner-success-title:#145a3d;--ec-banner-success-meta:#19774d;--ec-banner-warning-bg:#c4a87833;--ec-banner-warning-border:#9a7a4059;--ec-banner-warning-title:#6b4f1f;--ec-banner-warning-meta:#735829;--ec-banner-info-bg:#3a5fb81f;--ec-banner-info-border:#3a5fb84d;--ec-banner-info-title:#1e3a7a;--ec-banner-info-meta:#3a5fb8;--ec-wireframe-opacity:0;--ec-wireframe-color:30, 138, 94;--ec-btn-glow:0 10px 24px #1e8a5e40;--ec-btn-glow-hover:0 14px 36px #1e8a5e52;--ec-card-shadow:0 6px 18px #463c280f;--ec-card-hover-shadow:0 14px 36px #463c281a;--ec-shadow-hard:6px 6px 0 #25221b14;--ec-shadow-elevation-1:0 6px 18px #463c280f;--ec-shadow-elevation-2:0 14px 36px #463c281a;--ec-shadow-elevation-3:0 20px 48px #463c2821;--ec-notebook-paper:var(--ec-paper);--ec-notebook-pencil:var(--ec-pen);--ec-notebook-rule:var(--ec-paper-rule);--ec-accent-warm:#d98324;--ec-accent-warm-deep:#9a5316;--ec-accent-warm-soft:#d983241f;--ec-accent-warm-border:#b9651a66;--ec-accent-coral:#c8553d;--ec-surface-warm:#faf8f2;--ec-card-shadow-warm:0 8px 24px #50442d12;--ec-card-hover-shadow-warm:0 18px 44px #50442d1c;--ec-focus-ring:0 0 0 3px #19774d2e, 0 0 0 1px var(--ec-brand);--ec-radius-card-lg:20px;--ec-paper-texture:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='280' height='280'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3CfeComponentTransfer%3E%3CfeFuncA type='linear' slope='0.05'/%3E%3C/feComponentTransfer%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}html,body{background:var(--ec-canvas);color:var(--ec-text-primary)}:root{--text-display:clamp(2.75rem, 6vw, 4.75rem);--text-hero:clamp(2.75rem, 6vw, 4.75rem);--text-headline:clamp(1.875rem, 4vw, 2.75rem);--text-title:clamp(1.125rem, 3.5vw, 1.4375rem);--text-h3:1.4375rem;--text-body-large:1.125rem;--text-body:1rem;--text-caption:.8125rem;--leading-display:1.04;--leading-hero:1.04;--leading-headline:1.1;--leading-title:1.2;--leading-h3:1.2;--leading-body:1.55;--leading-body-large:1.65;--leading-caption:1.4;--space-section:clamp(3rem, 8vw, 6rem);--space-component:clamp(1rem, 2vw, 1.5rem);--space-element:clamp(.75rem, 1.5vw, 1rem);--ec-reading-measure:68ch;--ec-reading-size:1.1875rem;--ec-reading-leading:1.72;--ec-reading-para-gap:1.3rem;--ec-reading-font:var(--font-display,"Newsreader", Georgia, serif)}.text-display{font-family:var(--font-display,"Newsreader", Georgia, serif);font-size:var(--text-display);font-weight:400;line-height:var(--leading-display);letter-spacing:-.025em}.text-hero{font-family:var(--font-display,"Newsreader", Georgia, serif);font-size:var(--text-hero);font-weight:400;line-height:var(--leading-hero);letter-spacing:-.025em;color:var(--ec-text-primary)}.landing-h2{font-family:var(--font-display,"Newsreader", Georgia, serif);letter-spacing:-.02em;color:var(--ec-text-primary);font-size:clamp(1.875rem,4vw,2.75rem);font-weight:500;line-height:1.1}.landing-h3{letter-spacing:-.02em;font-size:clamp(1.375rem,3vw,1.75rem);font-weight:700;line-height:1.2}.landing-h3 em{font-style:italic;font-weight:inherit;color:var(--ec-brand)}.landing-lead{color:var(--ec-text-secondary);font-size:1.0625rem;line-height:1.65}@media (min-width:640px){.landing-lead{font-size:1.125rem}}.landing-hero-glow{pointer-events:none;position:absolute;inset:0;overflow:hidden}.landing-hero-glow:before{content:"";background:radial-gradient(ellipse at center, var(--ec-brand) 0%, transparent 70%);border-radius:50%;width:min(90vw,720px);height:320px;position:absolute;top:20%;left:50%;transform:translate(-50%)}@supports (color:color-mix(in lab, red, red)){.landing-hero-glow:before{background:radial-gradient(ellipse at center, color-mix(in srgb, var(--ec-brand) 6%, transparent) 0%, transparent 70%)}}.landing-hero-glow:before{filter:blur(48px);opacity:.85}.text-headline{font-family:var(--font-display,"Newsreader", Georgia, serif);font-size:var(--text-headline);font-weight:400;line-height:var(--leading-headline);letter-spacing:-.025em;color:var(--ec-text-primary)}.text-title{font-size:var(--text-title);font-weight:700;line-height:var(--leading-title);letter-spacing:-.015em;color:var(--ec-text-primary)}.text-h3{font-size:var(--text-h3);font-weight:700;line-height:var(--leading-h3);letter-spacing:-.01em;color:var(--ec-text-primary)}.text-body{font-size:var(--text-body);line-height:var(--leading-body);color:var(--ec-text-secondary)}.text-body-large{font-size:var(--text-body-large);line-height:var(--leading-body-large);color:var(--ec-text-secondary)}.text-caption{font-size:var(--text-caption);line-height:var(--leading-caption);color:var(--ec-text-secondary)}.label-overline{font-family:var(--font-mono);letter-spacing:.2em;text-transform:uppercase;color:var(--ec-text-faint);font-size:12px;font-weight:500}.ec-countdown-number{font-family:var(--font-display,"Newsreader", Georgia, serif);letter-spacing:-.03em;color:var(--ec-brand);font-size:clamp(3.5rem,14vw,7.5rem);font-weight:400;line-height:1}.ec-notebook-stat{font-family:var(--ec-font-handwriting);font-size:clamp(1.5rem,4vw,2rem);line-height:1.1}.ec-notebook-hand{font-family:var(--ec-font-handwriting);font-size:clamp(1.125rem,2.5vw,1.5rem);line-height:1.2}.space-section{padding-top:var(--space-section);padding-bottom:var(--space-section)}.gap-component{gap:var(--space-component)}.gap-element{gap:var(--space-element)}.app-shell{max-width:100%;min-height:100vh;padding:2.5rem 1rem;overflow-x:clip}@media (min-width:640px){.app-shell{padding:3rem 1.5rem}}@media (min-width:1024px){.app-shell{padding-left:2rem;padding-right:2rem}}.app-shell-tabbed{padding-bottom:calc(5rem + env(safe-area-inset-bottom,0px))}@media (min-width:1024px){.app-shell-tabbed{padding-bottom:3rem}}.app-padding{padding-left:1rem;padding-right:1rem}@media (min-width:640px){.app-padding{padding-left:1.5rem;padding-right:1.5rem}}@media (min-width:768px){.app-padding{padding-left:2rem;padding-right:2rem}}@media (min-width:1024px){.app-padding{padding-left:3rem;padding-right:3rem}}.app-section{padding-top:4rem;padding-bottom:4rem}@media (min-width:640px){.app-section{padding-top:6rem;padding-bottom:6rem}}@media (min-width:1024px){.app-section{padding-top:7rem;padding-bottom:7rem}}.animate-entry{animation:.2s ease-out both ec-fade-up}@keyframes ec-fade-up{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes ec-breathe{0%,to{opacity:.08;transform:scale(.96)}50%{opacity:.18;transform:scale(1.04)}}.ec-text-gradient{font-family:inherit;font-style:italic;font-weight:inherit;color:var(--ec-brand);-webkit-text-fill-color:var(--ec-brand);background:0 0}.ec-stat-figure{font-family:var(--font-display,"Newsreader", Georgia, serif);letter-spacing:-.03em;color:var(--ec-brand);font-style:normal;font-weight:400;line-height:1}.landing-h2 em,.ec-display em,.text-hero em,.text-headline em,.text-display em,h1 em{-webkit-text-fill-color:var(--ec-brand);color:var(--ec-brand);background:0 0;font-style:italic}.ec-text-primary{color:var(--ec-text-primary)}.ec-text-secondary{color:var(--ec-text-secondary)}.ec-text-brand{color:var(--ec-brand)}.ec-border-color{border-color:var(--ec-border)}.ec-bg-brand-muted{background:var(--ec-brand-muted)}.ec-bg-surface-raised{background:var(--ec-surface-raised)}.ec-score-high{color:var(--ec-chip-success-text)}.ec-score-mid{color:var(--ec-chip-warning-text)}.ec-score-low{color:var(--ec-chip-critical-text)}.ec-tab-active{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-tab-active{border-color:color-mix(in srgb, var(--ec-brand) 40%, transparent)}}.ec-tab-active{background:var(--ec-brand-muted);color:var(--ec-chip-success-text)}.ec-mark-row--earned{border:1px solid var(--ec-chip-success-text)}@supports (color:color-mix(in lab, red, red)){.ec-mark-row--earned{border:1px solid color-mix(in srgb, var(--ec-chip-success-text) 30%, transparent)}}.ec-mark-row--earned{background:var(--ec-chip-success-bg);box-shadow:0 8px 32px -8px var(--ec-chip-success-text)}@supports (color:color-mix(in lab, red, red)){.ec-mark-row--earned{box-shadow:0 8px 32px -8px color-mix(in srgb, var(--ec-chip-success-text) 25%, transparent)}}.ec-mark-row--missed{border:1px solid var(--ec-chip-critical-text)}@supports (color:color-mix(in lab, red, red)){.ec-mark-row--missed{border:1px solid color-mix(in srgb, var(--ec-chip-critical-text) 30%, transparent)}}.ec-mark-row--missed{background:var(--ec-chip-critical-bg);box-shadow:0 8px 32px -8px var(--ec-chip-critical-text)}@supports (color:color-mix(in lab, red, red)){.ec-mark-row--missed{box-shadow:0 8px 32px -8px color-mix(in srgb, var(--ec-chip-critical-text) 20%, transparent)}}.ec-mark-badge--earned{border:1px solid var(--ec-chip-success-text)}@supports (color:color-mix(in lab, red, red)){.ec-mark-badge--earned{border:1px solid color-mix(in srgb, var(--ec-chip-success-text) 40%, transparent)}}.ec-mark-badge--earned{background:var(--ec-chip-success-text)}@supports (color:color-mix(in lab, red, red)){.ec-mark-badge--earned{background:color-mix(in srgb, var(--ec-chip-success-text) 20%, transparent)}}.ec-mark-badge--earned{color:var(--ec-chip-success-text)}.ec-mark-badge--missed{border:1px solid var(--ec-chip-critical-text)}@supports (color:color-mix(in lab, red, red)){.ec-mark-badge--missed{border:1px solid color-mix(in srgb, var(--ec-chip-critical-text) 40%, transparent)}}.ec-mark-badge--missed{background:var(--ec-chip-critical-text)}@supports (color:color-mix(in lab, red, red)){.ec-mark-badge--missed{background:color-mix(in srgb, var(--ec-chip-critical-text) 20%, transparent)}}.ec-mark-badge--missed{color:var(--ec-chip-critical-text)}.ec-banner-info-inline{border:1px solid var(--ec-banner-info-border);background:var(--ec-banner-info-bg);color:var(--ec-banner-info-meta)}.ec-banner-info-inline strong{color:var(--ec-banner-info-title)}.ec-banner-warning-inline{border:1px solid var(--ec-banner-warning-border);background:var(--ec-banner-warning-bg);color:var(--ec-banner-warning-meta)}.ec-banner-warning-inline strong{color:var(--ec-banner-warning-title)}.ec-tint-brand-icon{background:var(--ec-brand-muted);border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-tint-brand-icon{border-color:color-mix(in srgb, var(--ec-brand) 28%, transparent)}}.ec-tint-brand-icon{color:var(--ec-brand)}.ec-tint-success-icon{background:var(--ec-chip-success-bg);border-color:var(--ec-chip-success-text)}@supports (color:color-mix(in lab, red, red)){.ec-tint-success-icon{border-color:color-mix(in srgb, var(--ec-chip-success-text) 30%, transparent)}}.ec-tint-success-icon{color:var(--ec-chip-success-text)}.ec-tint-success-chip{border:1px solid var(--ec-chip-success-text)}@supports (color:color-mix(in lab, red, red)){.ec-tint-success-chip{border:1px solid color-mix(in srgb, var(--ec-chip-success-text) 30%, transparent)}}.ec-tint-success-chip{background:var(--ec-chip-success-bg);color:var(--ec-chip-success-text)}.ec-tint-warning-icon{background:var(--ec-chip-warning-bg);border-color:var(--ec-chip-warning-text)}@supports (color:color-mix(in lab, red, red)){.ec-tint-warning-icon{border-color:color-mix(in srgb, var(--ec-chip-warning-text) 30%, transparent)}}.ec-tint-warning-icon{color:var(--ec-chip-warning-text)}.ec-tint-warning-chip{border:1px solid var(--ec-chip-warning-text)}@supports (color:color-mix(in lab, red, red)){.ec-tint-warning-chip{border:1px solid color-mix(in srgb, var(--ec-chip-warning-text) 30%, transparent)}}.ec-tint-warning-chip{background:var(--ec-chip-warning-bg);color:var(--ec-chip-warning-text)}.ec-tint-critical-icon{background:var(--ec-chip-critical-bg);border-color:var(--ec-chip-critical-text)}@supports (color:color-mix(in lab, red, red)){.ec-tint-critical-icon{border-color:color-mix(in srgb, var(--ec-chip-critical-text) 30%, transparent)}}.ec-tint-critical-icon{color:var(--ec-chip-critical-text)}.ec-tint-critical-chip{border:1px solid var(--ec-chip-critical-text)}@supports (color:color-mix(in lab, red, red)){.ec-tint-critical-chip{border:1px solid color-mix(in srgb, var(--ec-chip-critical-text) 30%, transparent)}}.ec-tint-critical-chip{background:var(--ec-chip-critical-bg);color:var(--ec-chip-critical-text)}.ec-tint-critical-panel{border:1px solid var(--ec-chip-critical-text)}@supports (color:color-mix(in lab, red, red)){.ec-tint-critical-panel{border:1px solid color-mix(in srgb, var(--ec-chip-critical-text) 20%, transparent)}}.ec-tint-critical-panel{background:var(--ec-chip-critical-bg)}@supports (color:color-mix(in lab, red, red)){.ec-tint-critical-panel{background:color-mix(in srgb, var(--ec-chip-critical-bg) 55%, var(--ec-surface-raised))}}.ec-tint-neutral-chip{border:1px solid var(--ec-chip-neutral-text)}@supports (color:color-mix(in lab, red, red)){.ec-tint-neutral-chip{border:1px solid color-mix(in srgb, var(--ec-chip-neutral-text) 25%, transparent)}}.ec-tint-neutral-chip{background:var(--ec-chip-neutral-bg);color:var(--ec-chip-neutral-text)}.ec-tint-info-icon{background:var(--ec-chip-info-bg);border-color:var(--ec-chip-info-text)}@supports (color:color-mix(in lab, red, red)){.ec-tint-info-icon{border-color:color-mix(in srgb, var(--ec-chip-info-text) 30%, transparent)}}.ec-tint-info-icon{color:var(--ec-chip-info-text)}.ec-tint-info-chip{border:1px solid var(--ec-chip-info-text)}@supports (color:color-mix(in lab, red, red)){.ec-tint-info-chip{border:1px solid color-mix(in srgb, var(--ec-chip-info-text) 30%, transparent)}}.ec-tint-info-chip{background:var(--ec-chip-info-bg);color:var(--ec-chip-info-text)}.ec-tint-accent-icon{background:var(--ec-chip-accent-bg);border-color:var(--ec-chip-accent-text)}@supports (color:color-mix(in lab, red, red)){.ec-tint-accent-icon{border-color:color-mix(in srgb, var(--ec-chip-accent-text) 30%, transparent)}}.ec-tint-accent-icon{color:var(--ec-chip-accent-text)}.ec-tint-accent-chip{border:1px solid var(--ec-chip-accent-text)}@supports (color:color-mix(in lab, red, red)){.ec-tint-accent-chip{border:1px solid color-mix(in srgb, var(--ec-chip-accent-text) 30%, transparent)}}.ec-tint-accent-chip{background:var(--ec-chip-accent-bg);color:var(--ec-chip-accent-text)}.ec-tint-accent-icon-wrap{border:1px solid var(--ec-chip-accent-text)}@supports (color:color-mix(in lab, red, red)){.ec-tint-accent-icon-wrap{border:1px solid color-mix(in srgb, var(--ec-chip-accent-text) 30%, transparent)}}.ec-tint-accent-icon-wrap{background:var(--ec-chip-accent-bg);color:var(--ec-chip-accent-text)}.ec-tint-sampled-icon{background:var(--ec-chip-sampled-bg);border-color:var(--ec-chip-sampled-text)}@supports (color:color-mix(in lab, red, red)){.ec-tint-sampled-icon{border-color:color-mix(in srgb, var(--ec-chip-sampled-text) 30%, transparent)}}.ec-tint-sampled-icon{color:var(--ec-chip-sampled-text)}.ec-tint-sampled-chip{border:1px solid var(--ec-chip-sampled-text)}@supports (color:color-mix(in lab, red, red)){.ec-tint-sampled-chip{border:1px solid color-mix(in srgb, var(--ec-chip-sampled-text) 30%, transparent)}}.ec-tint-sampled-chip{background:var(--ec-chip-sampled-bg);color:var(--ec-chip-sampled-text)}.ec-tint-sampled-icon-wrap{border:1px solid var(--ec-chip-sampled-text)}@supports (color:color-mix(in lab, red, red)){.ec-tint-sampled-icon-wrap{border:1px solid color-mix(in srgb, var(--ec-chip-sampled-text) 30%, transparent)}}.ec-tint-sampled-icon-wrap{background:var(--ec-chip-sampled-bg);color:var(--ec-chip-sampled-text)}.ec-highlight-success-panel{border:1px solid var(--ec-chip-success-text)}@supports (color:color-mix(in lab, red, red)){.ec-highlight-success-panel{border:1px solid color-mix(in srgb, var(--ec-chip-success-text) 30%, transparent)}}.ec-highlight-success-panel{background:var(--ec-chip-success-bg)}.ec-highlight-warning-panel{border:1px solid var(--ec-chip-warning-text)}@supports (color:color-mix(in lab, red, red)){.ec-highlight-warning-panel{border:1px solid color-mix(in srgb, var(--ec-chip-warning-text) 30%, transparent)}}.ec-highlight-warning-panel{background:var(--ec-chip-warning-bg)}.ec-glow-orb{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-glow-orb{background:color-mix(in srgb, var(--ec-brand) 8%, transparent)}}.ec-glow-orb{opacity:.65}.ec-glow-orb-info{background:var(--ec-chip-info-text)}@supports (color:color-mix(in lab, red, red)){.ec-glow-orb-info{background:color-mix(in srgb, var(--ec-chip-info-text) 8%, transparent)}}.ec-glow-orb-info{opacity:.65}.ec-glow-orb-accent{background:var(--ec-chip-accent-text)}@supports (color:color-mix(in lab, red, red)){.ec-glow-orb-accent{background:color-mix(in srgb, var(--ec-chip-accent-text) 8%, transparent)}}.ec-glow-orb-accent{opacity:.65}.ec-glow-orb-critical{background:var(--ec-chip-critical-text)}@supports (color:color-mix(in lab, red, red)){.ec-glow-orb-critical{background:color-mix(in srgb, var(--ec-chip-critical-text) 8%, transparent)}}.ec-glow-orb-critical{opacity:.65}.ec-glow-orb-lg{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-glow-orb-lg{background:color-mix(in srgb, var(--ec-brand) 10%, transparent)}}.ec-glow-orb-lg{opacity:.65}.ec-chat-user-bubble{border:1px solid var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-chat-user-bubble{border:1px solid color-mix(in srgb, var(--ec-brand) 22%, var(--ec-border))}}.ec-chat-user-bubble{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-chat-user-bubble{background:color-mix(in srgb, var(--ec-brand) 6%, var(--ec-surface-raised))}}.ec-chat-message-enter{animation:.22s cubic-bezier(.22,1,.36,1) both ec-chat-enter}@keyframes ec-chat-enter{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.ec-streaming-caret{background:var(--ec-brand);border-radius:1px;width:2px;height:1.05em;animation:1s step-end infinite ec-caret-blink}@keyframes ec-caret-blink{0%,to{opacity:1}50%{opacity:0}}.ec-chat-avatar{background:var(--ec-brand);color:#fff}.ec-chat-avatar-soft{background:var(--ec-brand-muted);border:1px solid var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-chat-avatar-soft{border:1px solid color-mix(in srgb, var(--ec-brand) 22%, transparent)}}.ec-chat-caret{background:var(--ec-brand)}.ec-btn-send{background:var(--ec-brand);color:var(--ec-on-brand-text);box-shadow:var(--ec-btn-glow);transition:box-shadow .2s cubic-bezier(.4,0,.2,1)}.ec-btn-send:hover:not(:disabled){background:var(--ec-brand-deep,#8f1f1c);box-shadow:var(--ec-btn-glow-hover)}.ec-fab-brand{background:var(--ec-brand);color:var(--ec-on-brand-text);box-shadow:0 8px 32px var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-fab-brand{box-shadow:0 8px 32px color-mix(in srgb, var(--ec-brand) 40%, transparent)}}.ec-fab-brand{transition:box-shadow .2s cubic-bezier(.4,0,.2,1)}.ec-fab-brand:hover{background:var(--ec-brand-deep,#8f1f1c);box-shadow:0 8px 48px var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-fab-brand:hover{box-shadow:0 8px 48px color-mix(in srgb, var(--ec-brand) 60%, transparent)}}.ec-progress-fill-brand{background:var(--ec-brand)}.ec-progress-fill-shimmer{background:linear-gradient(90deg, var(--ec-brand), var(--ec-brand-deep,#8f1f1c), var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.ec-progress-fill-shimmer{background:linear-gradient(90deg, var(--ec-brand), color-mix(in srgb, var(--ec-brand-deep,#8f1f1c) 75%, var(--ec-brand)), var(--ec-brand))}}.ec-progress-fill-shimmer{background-size:200% 100%}.ec-progress-fill-spectrum{background:linear-gradient(90deg, var(--ec-chip-critical-text), var(--ec-chip-warning-text), var(--ec-chip-success-text));background-size:200% 100%}.ec-score-bar-high{background:linear-gradient(to right, var(--ec-chip-success-text), var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.ec-score-bar-high{background:linear-gradient(to right, var(--ec-chip-success-text), color-mix(in srgb, var(--ec-brand) 80%, var(--ec-chip-success-text)))}}.ec-score-bar-mid{background:linear-gradient(to right, var(--ec-chip-warning-text), var(--ec-chip-warning-text))}@supports (color:color-mix(in lab, red, red)){.ec-score-bar-mid{background:linear-gradient(to right, var(--ec-chip-warning-text), color-mix(in srgb, var(--ec-chip-warning-text) 70%, var(--ec-banner-warning-meta)))}}.ec-score-bar-low{background:linear-gradient(to right, var(--ec-chip-critical-text), var(--ec-chip-critical-text))}@supports (color:color-mix(in lab, red, red)){.ec-score-bar-low{background:linear-gradient(to right, var(--ec-chip-critical-text), color-mix(in srgb, var(--ec-chip-critical-text) 80%, transparent))}}.ec-hover-brand-border:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-hover-brand-border:hover{border-color:color-mix(in srgb, var(--ec-brand) 40%, transparent)}}.ec-hover-brand-border:hover{box-shadow:0 4px 16px -8px var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-hover-brand-border:hover{box-shadow:0 4px 16px -8px color-mix(in srgb, var(--ec-brand) 18%, transparent)}}.ec-hover-brand-border-mild:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-hover-brand-border-mild:hover{border-color:color-mix(in srgb, var(--ec-brand) 30%, transparent)}}.ec-select-active{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-select-active{border-color:color-mix(in srgb, var(--ec-brand) 50%, transparent)}}.ec-select-active{background:var(--ec-brand-muted)}.ec-select-ring{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-select-ring{border-color:color-mix(in srgb, var(--ec-brand) 40%, transparent)}}.ec-select-ring{box-shadow:0 0 0 1px var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-select-ring{box-shadow:0 0 0 1px color-mix(in srgb, var(--ec-brand) 30%, transparent)}}.ec-upload-glow-ring{background:linear-gradient(90deg, var(--ec-brand), var(--ec-c-math,#e0892b), var(--ec-c-phys,#2d6bd4));opacity:.55}.ec-upload-icon-wrap{border:1px solid var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-upload-icon-wrap{border:1px solid color-mix(in srgb, var(--ec-brand) 28%, transparent)}}.ec-upload-icon-wrap{background:var(--ec-brand-muted)}.ec-icon-hero{border:1px solid var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-icon-hero{border:1px solid color-mix(in srgb, var(--ec-brand) 28%, transparent)}}.ec-icon-hero{background:var(--ec-brand-muted)}.ec-icon-hero-gradient{background:linear-gradient(135deg, var(--ec-brand), var(--ec-chip-info-text))}@supports (color:color-mix(in lab, red, red)){.ec-icon-hero-gradient{background:linear-gradient(135deg, color-mix(in srgb, var(--ec-brand) 20%, transparent), color-mix(in srgb, var(--ec-chip-info-text) 20%, transparent))}}.ec-panel-highlight{border:1px solid var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-panel-highlight{border:1px solid color-mix(in srgb, var(--ec-brand) 20%, transparent)}}.ec-panel-highlight{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-panel-highlight{background:color-mix(in srgb, var(--ec-brand) 5%, transparent)}}.ec-prompt-chip{font-family:var(--font-mono);border:1px solid var(--ec-border);background:var(--ec-surface);min-height:36px;color:var(--ec-text-secondary);cursor:pointer;border-radius:999px;align-items:center;padding:8px 14px;font-size:12.5px;line-height:1.4;transition:color .18s,border-color .18s,transform .18s;display:inline-flex}.ec-prompt-chip:hover:not(:disabled){border-color:var(--ec-brand);background:var(--ec-surface-raised);color:var(--ec-brand-deep,var(--ec-brand));transform:translateY(-1px)}.ec-prompt-chip:disabled{cursor:not-allowed;opacity:.6}.ec-chat-composer{border:1px solid var(--ec-border);border-radius:var(--ec-radius-button);background:var(--ec-surface);align-items:center;gap:8px;padding:6px 6px 6px 14px;transition:border-color .2s,box-shadow .2s;display:flex}.ec-chat-composer:focus-within{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-chat-composer:focus-within{border-color:color-mix(in srgb, var(--ec-brand) 50%, transparent)}}.ec-chat-composer:focus-within{box-shadow:0 0 0 4px var(--ec-brand-muted)}.ec-chat-composer__input{min-height:44px;color:var(--ec-text-primary);background:0 0;border:none;outline:none;flex:1;font-size:15px;line-height:1.4}.ec-chat-composer__input::placeholder{color:var(--ec-text-secondary)}.ec-chat-composer__input:disabled{cursor:not-allowed}.ec-on-brand-text{color:var(--ec-on-brand-text)}.ec-tint-info-icon-wrap{border:1px solid var(--ec-chip-info-text)}@supports (color:color-mix(in lab, red, red)){.ec-tint-info-icon-wrap{border:1px solid color-mix(in srgb, var(--ec-chip-info-text) 30%, transparent)}}.ec-tint-info-icon-wrap{background:var(--ec-chip-info-bg);color:var(--ec-chip-info-text)}.ec-auth-input-focus:focus{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-auth-input-focus:focus{border-color:color-mix(in srgb, var(--ec-brand) 50%, transparent)}}.ec-auth-input-focus:focus{box-shadow:0 0 20px var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-auth-input-focus:focus{box-shadow:0 0 20px color-mix(in srgb, var(--ec-brand) 25%, transparent)}}.ec-checkbox-active{border-color:var(--ec-brand);background:var(--ec-brand);color:var(--ec-text-primary);box-shadow:0 0 12px var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-checkbox-active{box-shadow:0 0 12px color-mix(in srgb, var(--ec-brand) 50%, transparent)}}.ec-option-active{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-option-active{border-color:color-mix(in srgb, var(--ec-brand) 50%, transparent)}}.ec-option-active{background:linear-gradient(135deg, var(--ec-brand), var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.ec-option-active{background:linear-gradient(135deg, color-mix(in srgb, var(--ec-brand) 15%, transparent), color-mix(in srgb, var(--ec-brand) 5%, transparent))}}.ec-option-active{box-shadow:0 0 0 3px var(--ec-brand), 0 0 24px var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-option-active{box-shadow:0 0 0 3px color-mix(in srgb, var(--ec-brand) 15%, transparent), 0 0 24px color-mix(in srgb, var(--ec-brand) 25%, transparent)}}.ec-break-anywhere{overflow-wrap:anywhere;word-break:break-word}.ec-question-text{font-family:var(--font-display,"Newsreader", Georgia, serif);color:var(--ec-text-primary);overflow-wrap:anywhere;word-break:break-word;max-width:100%;font-weight:500;line-height:1.55}.examiner-ink{color:var(--ec-ink-crimson)}.ec-blog-stats{display:grid}.ec-blog-stat{border-radius:var(--ec-radius-card,16px);border:1px solid var(--ec-border);background:var(--ec-brand);flex-direction:column;gap:.25rem;padding:1.25rem 1.5rem;display:flex}@supports (color:color-mix(in lab, red, red)){.ec-blog-stat{background:color-mix(in srgb, var(--ec-brand) 6%, var(--ec-surface))}}.ec-blog-stat__value{font-family:var(--font-display,"Newsreader", Georgia, serif);letter-spacing:-.03em;color:var(--ec-brand);font-size:1.75rem;font-weight:400}.ec-blog-stat__label{color:var(--ec-text-secondary);font-size:.8125rem}.ec-blog-card{border-radius:var(--ec-radius-card,16px);border:1px solid var(--ec-border);background:var(--ec-surface);transition:border-color .2s,box-shadow .2s,transform .2s;position:relative}.ec-blog-card:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-blog-card:hover{border-color:color-mix(in srgb, var(--ec-brand) 35%, var(--ec-border))}}.ec-blog-card:hover{box-shadow:var(--ec-card-hover-shadow);transform:translateY(-2px)}.ec-blog-card--featured{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-blog-card--featured{border-color:color-mix(in srgb, var(--ec-brand) 25%, var(--ec-border))}}.ec-blog-card--editorial{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-blog-card--editorial{border-color:color-mix(in srgb, var(--ec-brand) 30%, var(--ec-border))}}.ec-blog-card--editorial{background:var(--ec-surface)}.ec-blog-card--editorial .ec-blog-card__glow{opacity:.25}.ec-blog-chip--editorial,.ec-blog-chip--spotlight{color:#fffdf7;background:var(--ec-brand);border-color:var(--ec-brand-deep,#8f1f1c)}.ec-blog-chip--spotlight{box-shadow:0 4px 16px var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-blog-chip--spotlight{box-shadow:0 4px 16px color-mix(in srgb, var(--ec-brand) 28%, transparent)}}.ec-blog-hero--editorial{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-blog-hero--editorial{border-color:color-mix(in srgb, var(--ec-brand) 28%, var(--ec-border))}}.ec-blog-hero--editorial{background:var(--ec-surface)}.ec-blog-reading-progress{box-shadow:0 0 8px var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-blog-reading-progress{box-shadow:0 0 8px color-mix(in srgb, var(--ec-brand) 30%, transparent)}}.ec-blog-card__glow{pointer-events:none;border-radius:inherit;opacity:0;background:radial-gradient(80% 60% at 10% 0%, var(--ec-brand), transparent 70%);position:absolute;inset:0}@supports (color:color-mix(in lab, red, red)){.ec-blog-card__glow{background:radial-gradient(80% 60% at 10% 0%, color-mix(in srgb, var(--ec-brand) 18%, transparent), transparent 70%)}}.ec-blog-card__glow{transition:opacity .2s}.ec-blog-card:hover .ec-blog-card__glow{opacity:1}.ec-blog-card__inner{z-index:1;padding:1.5rem;position:relative}.ec-blog-card--featured .ec-blog-card__inner{padding:1.75rem 1.5rem}@media (min-width:640px){.ec-blog-card--featured .ec-blog-card__inner{padding:2rem 2.25rem}}.ec-blog-card--compact .ec-blog-card__inner{padding:1.15rem 1.25rem}.ec-blog-chip{letter-spacing:.04em;text-transform:uppercase;color:var(--ec-brand);background:var(--ec-brand-muted);border:1px solid var(--ec-brand);border-radius:999px;align-items:center;padding:.2rem .55rem;font-size:.6875rem;font-weight:600;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.ec-blog-chip{border:1px solid color-mix(in srgb, var(--ec-brand) 25%, transparent)}}.ec-blog-chip--code{font-family:var(--font-mono,ui-monospace, monospace);color:var(--ec-text-primary);background:var(--ec-surface-raised);border-color:var(--ec-border)}.ec-blog-meta{color:var(--ec-text-secondary);font-size:.75rem}.ec-blog-keyword{opacity:.85}.ec-blog-cta-banner{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-blog-cta-banner{background:color-mix(in srgb, var(--ec-brand) 4%, var(--ec-surface-raised,var(--ec-surface)))}}.ec-blog-hero{background:var(--ec-surface)}.ec-blog-hero__mesh{pointer-events:none;background:radial-gradient(ellipse 70% 50% at 100% 0%, var(--ec-brand), transparent), radial-gradient(ellipse 50% 40% at 0% 100%, var(--ec-brand), transparent);position:absolute;inset:0}@supports (color:color-mix(in lab, red, red)){.ec-blog-hero__mesh{background:radial-gradient(ellipse 70% 50% at 100% 0%, color-mix(in srgb, var(--ec-brand) 22%, transparent), transparent), radial-gradient(ellipse 50% 40% at 0% 100%, color-mix(in srgb, var(--ec-brand) 10%, transparent), transparent)}}.ec-blog-hero__mesh{opacity:.9}.ec-blog-layout{gap:2.5rem;display:grid}@media (min-width:1024px){.ec-blog-layout{grid-template-columns:220px minmax(0,1fr);align-items:start}.ec-blog-toc{position:sticky;top:6rem}}.ec-fanout-chunk{border-bottom:1px solid var(--ec-border);padding-bottom:.5rem}@supports (color:color-mix(in lab, red, red)){.ec-fanout-chunk{border-bottom:1px solid color-mix(in srgb, var(--ec-border) 60%, transparent)}}.ec-fanout-chunk:last-child{border-bottom:none}.ec-chunk-lead{border-left:3px solid var(--ec-brand);color:var(--ec-text-primary);padding-left:1rem;font-size:1.2rem;line-height:1.6}.ec-chunk-body .ec-blog-table-wrap{margin:.5rem 0 1.25rem}.ec-chunk-body table{border-collapse:collapse;width:100%;margin:0;font-size:.9375rem}.ec-chunk-body th,.ec-chunk-body td{border:1px solid var(--ec-border);text-align:left;vertical-align:top;padding:.6rem .75rem}.ec-chunk-body th{background:var(--ec-surface-raised);color:var(--ec-text-primary);font-weight:600}.ec-chunk-body tr:nth-child(2n) td{background:var(--ec-surface-raised)}@supports (color:color-mix(in lab, red, red)){.ec-chunk-body tr:nth-child(2n) td{background:color-mix(in srgb, var(--ec-surface-raised) 40%, transparent)}}.ec-blog-table-wrap{margin:1.25rem 0 1.5rem}.ec-fanout-prose .ec-fanout-chunk h2,.ec-fanout-prose .ec-fanout-chunk h3{border-bottom:none;padding-bottom:0}.ec-blog-prose{max-width:none;color:var(--ec-text-secondary);font-size:1.0625rem;line-height:1.75}.ec-reading-column{max-width:var(--ec-reading-measure);font-family:var(--ec-reading-font);color:var(--ec-text-reading);font-size:1.0625rem;line-height:1.7}.ec-blog-prose>:first-child{margin-top:0}.ec-blog-prose h2{border-bottom:1px solid var(--ec-border);font-family:var(--font-display,"Newsreader", Georgia, serif);letter-spacing:-.02em;color:var(--ec-text-primary);margin-top:2.6rem;margin-bottom:1rem;padding-bottom:.35rem;font-size:clamp(1.6rem,2.2vw,1.95rem);font-weight:500;line-height:1.2}.ec-blog-prose h3{font-family:var(--font-sans,"Instrument Sans", system-ui, sans-serif);color:var(--ec-text-primary);margin-top:1.9rem;margin-bottom:.65rem;font-size:1.2rem;font-weight:600;line-height:1.35}.ec-blog-prose p{margin-top:0;margin-bottom:var(--ec-reading-para-gap)}.ec-blog-prose ul,.ec-blog-prose ol{margin:0 0 1.25rem;padding-left:1.35rem}.ec-blog-prose li{margin-bottom:.45rem}.ec-blog-prose li>p{margin-bottom:.5rem}.ec-blog-prose hr{border-color:var(--ec-border);margin:2.5rem 0}.ec-blog-prose table{border-collapse:collapse;width:100%;margin:1.25rem 0 1.5rem;font-size:.9375rem}.ec-blog-prose th,.ec-blog-prose td{border:1px solid var(--ec-border);text-align:left;vertical-align:top;padding:.6rem .75rem}.ec-blog-prose th{background:var(--ec-surface-raised);color:var(--ec-text-primary);font-weight:600}.ec-blog-prose a{color:var(--ec-brand);text-underline-offset:3px;font-weight:500;text-decoration:underline}.ec-blog-prose a:hover{color:var(--ec-text-primary)}.ec-blog-prose strong{color:var(--ec-text-primary);font-weight:600}.ec-blog-prose blockquote{border-left:4px solid var(--ec-brand);border-radius:0 var(--ec-radius-button,12px) var(--ec-radius-button,12px) 0;background:linear-gradient(90deg, var(--ec-brand) 0%, transparent 100%);margin:1.75rem 0;padding:1rem 1.25rem}@supports (color:color-mix(in lab, red, red)){.ec-blog-prose blockquote{background:linear-gradient(90deg, color-mix(in srgb, var(--ec-brand) 14%, var(--ec-surface-raised)) 0%, transparent 100%)}}.ec-blog-prose blockquote{color:var(--ec-text-primary);font-size:1.05rem;font-style:normal;line-height:1.65}.ec-blog-prose code{font-family:var(--font-mono,ui-monospace, monospace);background:var(--ec-surface-raised);color:var(--ec-text-primary);border-radius:.25rem;padding:.12em .35em;font-size:.9em}.ec-blog-prose pre{border-radius:var(--ec-radius-card,16px);border:1px solid var(--ec-border);background:var(--ec-surface-raised);margin:1.25rem 0 1.5rem;padding:1rem;overflow-x:auto}.ec-blog-prose pre code{background:0 0;padding:0}.ec-blog-prose img{border-radius:var(--ec-radius-card,14px);border:1px solid var(--ec-border);max-width:100%;height:auto;margin:1.5rem auto;display:block}.ec-blog-prose figure{margin:1.75rem 0}.ec-blog-prose figcaption{font-family:var(--font-sans,"Instrument Sans", system-ui, sans-serif);color:var(--ec-text-faint);text-align:center;margin-top:.5rem;font-size:.85rem}.ec-wordmark-text{flex-direction:column;align-items:flex-start;line-height:1;display:flex;transform:rotate(-1.25deg)}.ec-wordmark-name{font-family:var(--ec-font-handwriting);letter-spacing:-.02em;white-space:nowrap;font-weight:600}.ec-wordmark-scheme{color:var(--ec-text-primary)}.ec-wordmark-underline{width:100%;height:.35rem;margin-top:.1rem;margin-left:.12rem}.ec-header-menu-btn,.ec-header-icon-btn{border-radius:.75rem;justify-content:center;align-items:center;min-width:44px;min-height:44px;transition:border-color .15s;display:inline-flex}.ec-header-menu-btn{border:1px solid var(--ec-border);background:var(--ec-surface)}.ec-header-menu-btn:hover{background:var(--ec-surface-raised)}.ec-header-icon-btn{border:1px solid var(--ec-border);background:var(--ec-surface)}.ec-header-icon-btn:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-header-icon-btn:hover{border-color:color-mix(in srgb, var(--ec-brand) 45%, var(--ec-border))}}.ec-header-icon-btn:hover{background:var(--ec-surface-raised)}.ec-app-header{background:var(--ec-canvas);max-width:100vw;overflow:visible}@media (min-width:1024px){.ec-app-header{background:var(--ec-canvas)}@supports (color:color-mix(in lab, red, red)){.ec-app-header{background:color-mix(in srgb, var(--ec-canvas) 85%, transparent)}}}.ec-mobile-tab-bar{background:var(--ec-canvas)}@supports (color:color-mix(in lab, red, red)){.ec-mobile-tab-bar{background:color-mix(in srgb, var(--ec-canvas) 92%, transparent)}}.ec-mobile-tab-bar{-webkit-backdrop-filter:blur(14px);box-shadow:0 -1px 0 var(--ec-border), 0 -8px 32px var(--ec-ink,#211c17)}@supports (color:color-mix(in lab, red, red)){.ec-mobile-tab-bar{box-shadow:0 -1px 0 var(--ec-border), 0 -8px 32px color-mix(in srgb, var(--ec-ink,#211c17) 8%, transparent)}}@media (prefers-reduced-motion:reduce){.gradient-text,.brand-breathe,.animate-shimmer,.animate-shimmer-skeleton,.animate-entry,.ec-chat-message-enter,.ec-streaming-caret,[class*=animate-\[ec-breathe]{animation:none!important}}@supports (color:color-mix(in lab, red, red)){::selection{background:color-mix(in srgb, var(--ec-brand) 24%, transparent)}}::selection{color:var(--ec-text-primary)}@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}html{text-rendering:optimizelegibility}:where(a,button,[role=button],input,select,textarea,summary,[tabindex]):focus-visible{outline:2px solid var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){:where(a,button,[role=button],input,select,textarea,summary,[tabindex]):focus-visible{outline:2px solid color-mix(in srgb, var(--ec-brand) 65%, transparent)}}:where(a,button,[role=button],input,select,textarea,summary,[tabindex]):focus-visible{outline-offset:2px}@media (min-width:768px){*{scrollbar-width:thin;scrollbar-color:var(--ec-text-faint) transparent}@supports (color:color-mix(in lab, red, red)){*{scrollbar-color:color-mix(in srgb, var(--ec-text-faint) 42%, transparent) transparent}}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--ec-text-faint)}@supports (color:color-mix(in lab, red, red)){::-webkit-scrollbar-thumb{background:color-mix(in srgb, var(--ec-text-faint) 38%, transparent)}}::-webkit-scrollbar-thumb{background-clip:padding-box;border:2px solid #0000;border-radius:9999px}::-webkit-scrollbar-thumb:hover{background:var(--ec-text-faint)}@supports (color:color-mix(in lab, red, red)){::-webkit-scrollbar-thumb:hover{background:color-mix(in srgb, var(--ec-text-faint) 62%, transparent)}}::-webkit-scrollbar-thumb:hover{background-clip:padding-box}}.ec-score-display,.ec-countdown-number,.ec-blog-stat__value,.ec-text-gradient{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}.ms-pg{max-width:var(--ec-maxw,1200px);margin:0 auto;padding:0 32px}.ms-sec{padding-top:88px}.ms-overline{font-family:var(--font-mono);letter-spacing:.2em;text-transform:uppercase;color:var(--ec-text-faint);margin:0 0 16px;font-size:12px;font-weight:500}.ms-h-display{font-family:var(--font-display,"Newsreader", Georgia, serif);letter-spacing:-.025em;color:var(--ec-text-primary);margin:0;font-size:clamp(44px,6vw,76px);font-weight:500;line-height:1.04}.ms-h-display em{font-style:italic;font-weight:400}.ms-h2{font-family:var(--font-display,"Newsreader", Georgia, serif);letter-spacing:-.02em;color:var(--ec-text-primary);margin:0 0 14px;font-size:clamp(30px,4vw,44px);font-weight:500;line-height:1.1}.ms-h2 em{font-style:italic;font-weight:400}.ms-h3{font-family:var(--font-display,"Newsreader", Georgia, serif);color:var(--ec-text-primary);margin:0 0 8px;font-size:23px;font-weight:500;line-height:1.2}.ms-lead{color:var(--ec-text-secondary);max-width:56ch;margin:0;font-size:18px;line-height:1.65}.ms-body-2{color:var(--ec-text-secondary);margin:0;font-size:15px;line-height:1.6}.ms-micro{font-family:var(--font-mono);letter-spacing:.08em;color:var(--ec-text-faint);margin:0;font-size:11.5px}.ms-fade-in{animation:.4s cubic-bezier(.4,0,.2,1) backwards ms-rise}.ms-stag-1{animation-delay:50ms}.ms-stag-2{animation-delay:.11s}.ms-stag-3{animation-delay:.17s}@keyframes ms-rise{0%{transform:translateY(10px)}to{transform:translateY(0)}}.ms-hero{grid-template-columns:1.08fr .92fr;align-items:center;gap:64px;padding-top:72px;display:grid}.ms-hero-kicker{font-family:var(--font-display,"Newsreader", Georgia, serif);letter-spacing:.2em;text-transform:uppercase;color:var(--ec-text-faint);margin:0 0 26px;font-size:15px}.ms-hero h1{position:relative}.ms-hero-lead{margin:26px 0 36px}.ms-hero-ctas{flex-wrap:wrap;align-items:center;gap:24px;display:flex}.ms-hero-micro{margin-top:30px}.ms-landing-spotlight{margin-top:-24px;padding-top:0;padding-bottom:48px}.ms-hero-sheet-wrap{position:relative}.ms-hero-sheet-wrap .ms-sheet-caption{font-family:var(--ec-font-handwriting);color:var(--ec-brand);text-align:center;margin-top:18px;font-size:21px;transform:rotate(-1deg)}.ms-platform-unified{padding-top:56px;padding-bottom:8px;position:relative}.ms-platform-unified:before{content:"";pointer-events:none;background:radial-gradient(520px circle at 8% 18%, var(--ec-section-tint-mark) 0%, transparent 58%), radial-gradient(460px circle at 92% 28%, var(--ec-section-tint-learn) 0%, transparent 52%), radial-gradient(440px circle at 50% 100%, var(--ec-section-tint-discuss) 0%, transparent 56%);opacity:.95;position:absolute;inset:0}.ms-platform-unified>*{position:relative}.ms-pillars--unified{margin-top:40px}.ms-pillar-extras{flex-direction:column;gap:12px;display:flex}.ms-pillar-foot{color:var(--ec-text-faint);margin:0;font-size:13px;font-weight:600;line-height:1.5}.ms-community-flow--compact{gap:10px;padding:12px 14px}.ms-community-flow--compact .ms-community-flow-num{width:24px;height:24px;font-size:12px}.ms-community-flow--compact .ms-community-flow-step strong{font-size:13px}.ms-community-flow--compact .ms-community-flow-step p{font-size:12px}.ms-platform-stats{border:1px solid var(--ec-border);background:var(--ec-surface);box-shadow:var(--ec-card-shadow);border-radius:14px;flex-wrap:wrap;gap:0;margin-top:28px;display:flex;overflow:hidden}.ms-platform-stat{border-right:1px solid var(--ec-border);text-align:center;flex:25%;min-width:120px;padding:16px 20px}.ms-platform-stat:last-child{border-right:none}.ms-platform-stat b{font-family:var(--font-display,"Newsreader", Georgia, serif);letter-spacing:-.02em;color:var(--ec-text-primary);margin-bottom:4px;font-size:22px;font-weight:600;display:block}.ms-platform-stat span{font-family:var(--font-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ec-text-faint);font-size:10px}.ms-platform-flow{background:var(--ec-surface);border-radius:999px;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px 4px;margin-top:24px;padding:14px 18px;display:flex}@supports (color:color-mix(in lab, red, red)){.ms-platform-flow{background:color-mix(in srgb, var(--ec-surface) 88%, transparent)}}.ms-platform-flow{border:1px solid var(--ec-border);max-width:640px}.ms-platform-flow-item{align-items:center;gap:8px;display:flex}.ms-platform-flow-dot{font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ec-on-brand-text,#f8f9fa);border-radius:999px;padding:6px 14px;font-size:11px;font-weight:700}.ms-platform-flow-dot--mark{background:linear-gradient(135deg, var(--ec-brand) 0%, var(--ec-brand) 100%)}@supports (color:color-mix(in lab, red, red)){.ms-platform-flow-dot--mark{background:linear-gradient(135deg, color-mix(in srgb, var(--ec-brand) 80%, #000) 0%, var(--ec-brand) 100%)}}.ms-platform-flow-dot--learn{background:linear-gradient(135deg, var(--ec-accent-warm) 0%, var(--ec-accent-warm) 100%)}@supports (color:color-mix(in lab, red, red)){.ms-platform-flow-dot--learn{background:linear-gradient(135deg, color-mix(in srgb, var(--ec-accent-warm) 80%, #000) 0%, var(--ec-accent-warm) 100%)}}.ms-platform-flow-dot--discuss{background:linear-gradient(135deg, var(--ec-acc-violet) 0%, var(--ec-acc-violet) 100%)}@supports (color:color-mix(in lab, red, red)){.ms-platform-flow-dot--discuss{background:linear-gradient(135deg, color-mix(in srgb, var(--ec-acc-violet) 80%, #000) 0%, var(--ec-acc-violet) 100%)}}[data-ec-theme=late-night] .ms-platform-flow-dot{color:#14120d}.ms-platform-flow-desc{color:var(--ec-text-faint);font-size:12px;font-weight:600;display:none}@media (min-width:720px){.ms-platform-flow-desc{display:inline}}.ms-platform-flow-arrow{color:var(--ec-text-faint);opacity:.6;margin:0 4px;font-size:16px}.ms-pillar-feature-row{flex-wrap:wrap;gap:8px;display:flex}.ms-pillar-feature-pill{background:var(--ec-accent-warm);border-radius:999px;align-items:center;gap:6px;padding:5px 11px;font-size:12px;font-weight:700;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.ms-pillar-feature-pill{background:color-mix(in srgb, var(--ec-accent-warm) 14%, var(--ec-surface))}}.ms-pillar-feature-pill{color:var(--ec-accent-warm-deep,var(--ec-accent-warm));border:1px solid var(--ec-accent-warm)}@supports (color:color-mix(in lab, red, red)){.ms-pillar-feature-pill{border:1px solid color-mix(in srgb, var(--ec-accent-warm) 28%, transparent)}}.ms-pillar-post-types{flex-wrap:wrap;gap:8px;display:flex}.ms-pillar-post-type{font-family:var(--font-mono);letter-spacing:.04em;background:var(--ec-acc-violet);border-radius:8px;padding:5px 10px;font-size:11px;font-weight:600}@supports (color:color-mix(in lab, red, red)){.ms-pillar-post-type{background:color-mix(in srgb, var(--ec-acc-violet) 12%, var(--ec-surface))}}.ms-pillar-post-type{color:var(--ec-acc-violet);border:1px solid var(--ec-acc-violet)}@supports (color:color-mix(in lab, red, red)){.ms-pillar-post-type{border:1px solid color-mix(in srgb, var(--ec-acc-violet) 22%, transparent)}}.ms-pillar--learn{border-top:3px solid var(--ec-accent-warm)}.ms-pillar--discuss{border-top:3px solid var(--ec-acc-violet)}.ms-pillar--mark.ms-pillar--featured{border-top:3px solid var(--ec-brand)}.ms-marking-lead{margin-top:8px}.ms-marking-capabilities{grid-template-columns:repeat(5,1fr);gap:10px;margin-top:32px;display:grid}.ms-marking-cap{border:1px solid var(--ec-border);background:var(--ec-surface);box-shadow:var(--ec-card-shadow);border-radius:12px;flex-direction:column;gap:10px;padding:16px 14px;transition:transform .15s,box-shadow .15s;display:flex}.ms-marking-cap:hover{box-shadow:var(--ec-card-hover-shadow);transform:translateY(-2px)}.ms-marking-cap-glyph{font-family:var(--font-mono);color:var(--ec-brand);background:var(--ec-brand-muted);border-radius:8px;width:fit-content;padding:5px 10px;font-size:12px;font-weight:700;display:inline-flex}.ms-marking-cap strong{color:var(--ec-text-primary);margin-bottom:2px;font-size:13px;font-weight:700;display:block}.ms-marking-cap span{color:var(--ec-text-faint);font-size:12px;font-weight:500;line-height:1.4}.ms-marking-foot{text-align:center;margin-top:28px}.ms-platform-showcase{padding-bottom:16px}.ms-showcase-head{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:32px;display:flex}.ms-showcase-head-ctas{flex-wrap:wrap;gap:10px;display:flex}.ms-showcase-split{grid-template-columns:1fr 1fr;align-items:stretch;gap:20px;display:grid}.ms-showcase-panel{border:1px solid var(--ec-border);box-shadow:var(--ec-card-shadow);border-radius:18px;padding:24px 22px 22px;position:relative;overflow:hidden}.ms-showcase-panel:before{content:"";height:4px;position:absolute;top:0;left:0;right:0}.ms-showcase-panel--learn{background:linear-gradient(165deg, var(--ec-accent-warm) 0%, var(--ec-surface) 42%)}@supports (color:color-mix(in lab, red, red)){.ms-showcase-panel--learn{background:linear-gradient(165deg, color-mix(in srgb, var(--ec-accent-warm) 8%, var(--ec-surface)) 0%, var(--ec-surface) 42%)}}.ms-showcase-panel--learn:before{background:linear-gradient(90deg, var(--ec-accent-warm), var(--ec-accent-warm))}@supports (color:color-mix(in lab, red, red)){.ms-showcase-panel--learn:before{background:linear-gradient(90deg, var(--ec-accent-warm), color-mix(in srgb, var(--ec-accent-warm) 60%, var(--ec-brand)))}}.ms-showcase-panel--discuss{background:linear-gradient(165deg, var(--ec-acc-violet) 0%, var(--ec-surface) 42%)}@supports (color:color-mix(in lab, red, red)){.ms-showcase-panel--discuss{background:linear-gradient(165deg, color-mix(in srgb, var(--ec-acc-violet) 10%, var(--ec-surface)) 0%, var(--ec-surface) 42%)}}.ms-showcase-panel--discuss:before{background:linear-gradient(90deg, var(--ec-acc-violet), var(--ec-acc-violet))}@supports (color:color-mix(in lab, red, red)){.ms-showcase-panel--discuss:before{background:linear-gradient(90deg, var(--ec-acc-violet), color-mix(in srgb, var(--ec-acc-violet) 60%, var(--ec-c-phys)))}}.ms-showcase-panel-head{align-items:flex-start;gap:12px;margin-bottom:18px;display:flex}.ms-showcase-panel-icon{background:var(--ec-bg-soft);border-radius:10px;flex:none;place-items:center;width:40px;height:40px;font-size:20px;display:grid}.ms-showcase-panel-kicker{font-family:var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ec-text-faint);margin:0 0 2px;font-size:10px;font-weight:700}.ms-showcase-panel-head .ms-h3{margin:0;font-size:20px}.ms-showcase-panel-link{white-space:nowrap;align-self:center;margin-left:auto;font-size:13px!important}.ms-course-mini--showcase{grid-template-columns:1fr 1fr}.ms-pillars-wrap{padding-top:56px}.ms-pillars-heading{margin-top:8px}.ms-pillars-lead{max-width:52ch;margin-top:12px}.ms-pillars{grid-template-columns:repeat(3,1fr);gap:18px;margin-top:36px;display:grid}.ms-pillar{flex-direction:column;gap:12px;min-height:100%;padding:28px 26px;transition:transform .15s,box-shadow .15s,border-color .15s;display:flex}.ms-pillar:hover{box-shadow:var(--ec-card-hover-shadow);transform:translateY(-3px)}@supports (color:color-mix(in lab, red, red)){.ms-pillar--featured{border-color:color-mix(in srgb, var(--ec-brand) 45%, var(--ec-border))}}.ms-pillar-band .ms-pillar-kicker{color:var(--ec-on-brand-text,#f8f9fa)}.ms-pillar-band .ms-pillar-glyph{background:var(--ec-paper);border-radius:8px;place-items:center;width:32px;height:32px;display:grid}@supports (color:color-mix(in lab, red, red)){.ms-pillar-band .ms-pillar-glyph{background:color-mix(in srgb, var(--ec-paper) 22%, transparent)}}.ms-pillar-band .ms-pillar-glyph{font-size:16px}[data-ec-theme=late-night] .ms-pillar-band .ms-pillar-kicker{color:#14120d}.ms-step--1{border-left:4px solid var(--ec-brand)}.ms-step--2{border-left:4px solid var(--ec-c-phys)}.ms-step--3{border-left:4px solid var(--ec-accent-warm)}.ms-feat .ms-glyph{background:linear-gradient(135deg, var(--ec-c-phys) 0%, var(--ec-c-chem) 100%)}@supports (color:color-mix(in lab, red, red)){.ms-feat .ms-glyph{background:linear-gradient(135deg, color-mix(in srgb, var(--ec-c-phys) 18%, var(--ec-surface)) 0%, color-mix(in srgb, var(--ec-c-chem) 14%, var(--ec-surface)) 100%)}}.ms-feat .ms-glyph{border-radius:12px;padding:10px 14px;display:inline-block}.ms-final-cta{border-radius:var(--ec-radius-card-lg,20px);border:1px solid var(--ec-border);background:var(--ec-surface);box-shadow:var(--ec-card-shadow);padding:48px 32px}.ms-pillar-top{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.ms-pillar-glyph{background:var(--ec-brand-muted);border-radius:10px;place-items:center;width:36px;height:36px;font-size:18px;display:grid}.ms-pillar-kicker{font-family:var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ec-brand);font-size:11px;font-weight:700}.ms-pillar-badge{letter-spacing:.06em;text-transform:uppercase;background:var(--ec-chip-neutral-bg);color:var(--ec-text-secondary);border-radius:999px;margin-left:auto;padding:4px 8px;font-size:10px;font-weight:700}.ms-pillar .ms-h3{font-weight:700}.ms-pillar .ms-body-2{flex:1;font-weight:500;line-height:1.55}.ms-pillar-actions{flex-wrap:wrap;align-items:center;gap:12px 16px;margin-top:4px;display:flex}.ms-pillar-bullets{flex-direction:column;flex:1;gap:8px;margin:0;padding:0;list-style:none;display:flex}.ms-pillar-bullets li{color:var(--ec-text-secondary);padding-left:16px;font-size:13.5px;font-weight:600;line-height:1.45;position:relative}.ms-pillar-bullets li:before{content:"·";color:var(--ec-brand);font-weight:800;position:absolute;left:0}.ms-platform-detail-wrap{padding-top:72px}.ms-platform-detail-lead{max-width:58ch;margin-top:12px;font-weight:500}.ms-platform-detail{grid-template-columns:repeat(3,1fr);align-items:stretch;gap:20px;margin-top:40px;display:grid}.ms-detail-panel{flex-direction:column;gap:14px;padding:28px 26px;display:flex}.ms-detail-head{align-items:flex-start;gap:14px;display:flex}.ms-detail-icon{background:var(--ec-brand-muted);border-radius:12px;flex:none;place-items:center;width:44px;height:44px;font-size:22px;display:grid}.ms-detail-kicker{font-family:var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ec-brand);margin:0 0 4px;font-size:11px;font-weight:700}.ms-detail-intro{font-weight:500;line-height:1.55}.ms-detail-list{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.ms-detail-list li{color:var(--ec-text-secondary);padding-left:18px;font-size:14px;font-weight:500;line-height:1.5;position:relative}.ms-detail-list li:before{content:"✓";color:var(--ec-brand);font-size:12px;font-weight:800;position:absolute;left:0}.ms-detail-list--compact li{align-items:flex-start;gap:10px;padding-left:0;display:flex}.ms-detail-list--compact li:before{content:none}.ms-detail-list-icon{text-align:center;flex:none;width:22px;font-size:15px}.ms-detail-list--compact li strong{color:var(--ec-text-primary);font-weight:700}.ms-detail-steps{flex-direction:column;gap:10px;margin:0;padding:0 0 0 20px;display:flex}.ms-detail-steps li{color:var(--ec-text-secondary);font-size:14px;font-weight:500;line-height:1.5}.ms-detail-steps strong{color:var(--ec-text-primary);font-weight:700}.ms-detail-chips,.ms-detail-boards{flex-wrap:wrap;gap:8px;display:flex}.ms-detail-board-tag{letter-spacing:.04em;border-radius:999px;padding:5px 10px;font-size:11px;font-weight:700}.ms-detail-board-tag--caie{color:#3a5fb8;background:#3a5fb824}.ms-detail-board-tag--ib{color:#6b5b8a;background:#6b5b8a29}.ms-detail-foot{color:var(--ec-text-faint);margin-top:auto;padding-top:8px;font-size:13px;font-weight:600;line-height:1.5}.ms-detail-foot--muted{color:var(--ec-text-secondary)}.ms-detail-actions{flex-wrap:wrap;align-items:center;gap:12px 18px;display:flex}.ms-cta-row{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.ms-cta-row--center{justify-content:center}.ms-community-flow{background:var(--ec-bg-soft);border:1px solid var(--ec-border);border-radius:12px;flex-direction:column;gap:12px;padding:16px 18px;display:flex}.ms-community-flow-step{align-items:flex-start;gap:12px;display:flex}.ms-community-flow-num{background:var(--ec-brand-muted);width:28px;height:28px;color:var(--ec-brand);border-radius:50%;flex:none;place-items:center;font-size:13px;font-weight:800;display:grid}.ms-community-flow-step strong{color:var(--ec-text-primary);font-size:14px;font-weight:700;display:block}.ms-community-flow-step p{color:var(--ec-text-secondary);margin:2px 0 0;font-size:13px;font-weight:500}.ms-trust{border-top:1px solid var(--ec-border);border-bottom:1px solid var(--ec-border);gap:0;margin-top:84px;display:flex}.ms-trust>div{border-right:1px solid var(--ec-border);flex:1;padding:20px 26px}.ms-trust>div:last-child{border-right:none}.ms-trust b{font-family:var(--font-display,"Newsreader", Georgia, serif);letter-spacing:-.01em;color:var(--ec-text-primary);font-size:23px;font-weight:600;display:block}.ms-trust span{font-family:var(--font-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ec-text-faint);font-size:11px}.ms-feat-grid{grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px;display:grid}.ms-feat{padding:26px 28px;transition:transform .15s,box-shadow .15s;position:relative}.ms-feat:hover{box-shadow:var(--ec-card-hover-shadow);transform:translateY(-3px)}.ms-feat .ms-glyph{font-family:var(--font-mono);color:var(--ec-brand);background:var(--ec-brand-muted);border-radius:8px;margin-bottom:16px;padding:6px 12px;font-size:13px;font-weight:700;display:inline-flex}.ms-feat--wide{grid-column:span 2}.ms-feat .ms-feat-chips{flex-wrap:wrap;gap:8px;margin-top:16px;display:flex}.ms-steps{grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px;display:grid}.ms-step{padding:26px 28px;position:relative}.ms-step .ms-num{font-family:var(--font-display,"Newsreader", Georgia, serif);color:var(--ec-brand);margin-bottom:12px;font-size:52px;font-style:italic;line-height:1}.ms-step-art{border:1px dashed var(--ec-border);background:var(--ec-bg-soft);border-radius:10px;flex-direction:column;justify-content:center;gap:8px;min-height:96px;margin-top:18px;padding:14px 16px;display:flex}.ms-courses-promo{background:var(--ec-surface);border:1px solid var(--ec-border);box-shadow:var(--ec-card-shadow);border-radius:18px;grid-template-columns:.9fr 1.1fr;align-items:center;gap:56px;padding:48px 52px;display:grid;position:relative;overflow:visible}.ms-course-mini{grid-template-columns:1fr 1fr;gap:14px;display:grid}.ms-course-card{background:var(--ec-paper);border:1px solid var(--ec-border);cursor:pointer;color:inherit;border-radius:12px;padding:18px 20px;text-decoration:none;transition:transform .15s;display:block}.ms-course-card:hover{border-color:var(--ec-brand-border);transform:translateY(-2px)}.ms-course-card .ms-code{font-family:var(--font-mono);color:var(--ec-brand);letter-spacing:.08em;font-size:11.5px;font-weight:600}.ms-course-card .ms-name{font-family:var(--font-display,"Newsreader", Georgia, serif);margin:4px 0 8px;font-size:19px;font-weight:500}.ms-course-card .ms-meta{color:var(--ec-text-faint);font-size:12.5px}.ms-scard-grid{grid-template-columns:repeat(4,1fr);gap:16px;margin-top:32px;display:grid}.ms-scard2{cursor:pointer;color:inherit;border:1px solid var(--ec-border);box-shadow:var(--ec-card-shadow);background:var(--ec-surface);border-radius:14px;flex-direction:column;padding:0;text-decoration:none;transition:transform .15s,box-shadow .15s;display:flex;position:relative;overflow:hidden}.ms-scard2:hover{box-shadow:var(--ec-card-hover-shadow);transform:translateY(-4px)}.ms-scard2:focus-visible{outline:2px solid var(--sc,var(--ec-border));outline-offset:2px}.ms-scard2 .ms-scard-link{color:inherit;text-decoration:none}.ms-scard2 .ms-scard-link:after{content:"";z-index:1;border-radius:inherit;position:absolute;inset:0}.ms-scard2 .ms-scard-link:focus-visible{outline:none}.ms-scard2 .ms-scard-link:focus-visible:after{outline:2px solid var(--sc,var(--ec-border));outline-offset:2px}.ms-scard2 .ms-slinks{z-index:2;position:relative}.ms-scard2 .ms-tile{background:radial-gradient(130% 100% at 10% 0%, #fff3, transparent 58%), linear-gradient(135deg, var(--sc) 0%, var(--sc) 100%);place-items:center;height:96px;display:grid;position:relative;overflow:hidden}@supports (color:color-mix(in lab, red, red)){.ms-scard2 .ms-tile{background:radial-gradient(130% 100% at 10% 0%, #fff3, transparent 58%), linear-gradient(135deg, color-mix(in srgb, var(--sc) 94%, #fff) 0%, color-mix(in srgb, var(--sc) 76%, #221d14) 100%)}}.ms-scard2 .ms-tile{box-shadow:inset 0 1px #ffffff2e}.ms-scard2 .ms-tile:after{content:"";pointer-events:none;background:linear-gradient(100deg,#0000,#ffffff38,#0000);width:55%;transition:transform .7s cubic-bezier(.4,0,.2,1);position:absolute;top:0;bottom:0;left:-55%;transform:skew(-18deg)translate(-40%)}.ms-scard2:hover .ms-tile:after{transform:skew(-18deg)translate(340%)}@media (prefers-reduced-motion:reduce){.ms-scard2 .ms-tile:after{display:none}}.ms-scard2 .ms-tile .ms-tg{font-family:var(--font-display,"Newsreader", Georgia, serif);color:#fffffff5;text-shadow:0 2px 12px #00000038;font-size:42px;font-weight:600}.ms-scard2 .ms-tile .ms-badge{font-family:var(--font-mono);letter-spacing:.08em;color:#fff;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);background:#ffffff29;border:1px solid #ffffff73;border-radius:999px;padding:3px 9px;font-size:9.5px;font-weight:600;position:absolute;top:10px;right:10px}.ms-scard2 .ms-body{background:var(--ec-surface);border-top:none;flex-direction:column;flex:1;gap:6px;padding:16px 18px 14px;display:flex}.ms-scard2 .ms-sname{font-family:var(--font-display,"Newsreader", Georgia, serif);margin:0;font-size:20px;font-weight:500;line-height:1.15}.ms-scard2 .ms-scode{font-family:var(--font-mono);color:var(--ec-text-faint);letter-spacing:.06em;font-size:11.5px}.ms-scard2 .ms-stat-row{font-family:var(--font-mono);color:var(--ec-text-faint);letter-spacing:.04em;flex-wrap:wrap;gap:12px;margin-top:6px;font-size:10.5px;display:flex}.ms-scard2 .ms-stat-row b{color:var(--sc);font-weight:700}.ms-scard2 .ms-slinks{border-top:1px solid var(--ec-border);gap:14px;margin-top:auto;padding-top:11px;display:flex}.ms-scard2 .ms-slinks a{color:var(--sc);font-size:13px;font-weight:600;text-decoration:none}.ms-scard2 .ms-slinks a:hover{text-decoration:underline}.ms-founder{background:var(--ec-bg-soft);border:1px solid var(--ec-border);border-radius:18px;grid-template-columns:auto 1fr;align-items:start;gap:36px;padding:40px 44px;display:grid}.ms-founder-avatar{background:var(--ec-brand-muted);border:1.5px solid var(--ec-brand-border);width:64px;height:64px;font-family:var(--ec-font-handwriting);color:var(--ec-brand);border-radius:50%;flex-shrink:0;place-items:center;font-size:28px;display:grid}.ms-founder-quote{font-family:var(--font-display,"Newsreader", Georgia, serif);max-width:60ch;color:var(--ec-text-primary);margin:0 0 16px;font-size:24px;font-style:italic;line-height:1.45}.ms-cmp-hint{display:none}.ms-cmp{background:var(--ec-surface);border:1px solid var(--ec-border);box-shadow:var(--ec-card-shadow);border-radius:14px;margin-top:44px;overflow:hidden}.ms-cmp-row{grid-template-columns:1.3fr 1fr 1fr 1fr;align-items:center;display:grid}.ms-cmp-row>div{border-bottom:1px solid var(--ec-border);padding:15px 18px;font-size:14px}.ms-cmp-row:last-child>div{border-bottom:none}.ms-cmp-row .ms-lab{color:var(--ec-text-secondary);font-weight:500}.ms-cmp-head>div{font-family:var(--font-display,"Newsreader", Georgia, serif);color:var(--ec-text-primary);background:var(--ec-bg-soft);font-size:17px;font-weight:600}.ms-cmp-head .ms-us-head{color:var(--ec-brand);background:var(--ec-brand-muted);text-align:center}.ms-cmp-cell{text-align:center;font-family:var(--font-mono);font-size:12.5px}.ms-cmp-cell--y{color:var(--ec-brand);font-weight:700}.ms-cmp-cell--n{color:var(--ec-ink-crimson)}.ms-cmp-cell--mid{color:var(--ec-chip-warning-text)}.ms-cmp-row .ms-us-col{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ms-cmp-row .ms-us-col{background:color-mix(in srgb, var(--ec-brand) 4%, transparent)}}.ms-faq-list{border-top:1px solid var(--ec-border);margin-top:36px}.ms-faq-item{border-bottom:1px solid var(--ec-border)}.ms-faq-q{cursor:pointer;width:100%;font-family:var(--font-display,"Newsreader", Georgia, serif);color:var(--ec-text-primary);text-align:left;background:0 0;border:none;justify-content:space-between;align-items:center;gap:18px;min-height:44px;padding:20px 4px;font-size:20px;display:flex}.ms-faq-q:hover{color:var(--ec-brand)}.ms-faq-q .ms-pm{font-family:var(--font-mono);color:var(--ec-brand);flex-shrink:0;font-size:17px}.ms-faq-a{overflow:hidden}.ms-faq-a .ms-body-2{max-width:70ch;padding:0 4px 22px}.home-geo-intro{margin-top:-8px;margin-bottom:8px;padding-bottom:4px}.home-geo-details{border-top:1px solid var(--ec-border);border-bottom:1px solid var(--ec-border)}.home-geo-summary{cursor:pointer;font-family:var(--font-display,"Newsreader", Georgia, serif);color:var(--ec-text-secondary);justify-content:space-between;align-items:center;gap:16px;min-height:44px;padding:14px 4px;font-size:17px;font-weight:500;list-style:none;display:flex}.home-geo-summary::-webkit-details-marker{display:none}.home-geo-summary:hover{color:var(--ec-brand)}.home-geo-pm{font-family:var(--font-mono);color:var(--ec-brand);flex-shrink:0;font-size:17px}.home-geo-pm:before{content:"+"}.home-geo-details[open] .home-geo-pm:before{content:"−"}.home-geo-body{max-width:72ch;color:var(--ec-text-secondary);padding:0 4px 16px;font-size:14px;line-height:1.65}.home-geo-body p{margin:0}.home-geo-body p+p{margin-top:12px}.home-geo-cta a{color:var(--ec-brand);text-underline-offset:2px;font-weight:600;text-decoration:underline}.home-geo-cta a:hover{color:var(--ec-text-primary)}@media (min-width:768px){.home-geo-summary{font-size:18px}}.ms-final-cta{text-align:center;background:var(--ec-surface);border:1px solid var(--ec-border);box-shadow:var(--ec-card-shadow);border-radius:20px;padding:72px 48px;position:relative}.ms-subjects-head{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:18px;display:flex}@media (max-width:900px){.ms-pg{padding:0 18px}.ms-sec{padding-top:64px}.ms-hero{grid-template-columns:1fr;padding-top:40px}.ms-hero-ctas{flex-direction:column;align-items:stretch;gap:12px}.ms-hero-ctas .ec-btn-primary,.ms-hero-ctas .ec-btn-warm,.ms-hero-ctas .ec-btn-ghost{width:100%;min-height:var(--ec-touch-min,44px);justify-content:center}.ms-hero-ctas .ec-btn-underline{min-height:var(--ec-touch-min,44px);justify-content:center;align-items:center;display:inline-flex}.ms-trust{flex-direction:column}.ms-trust>div{border-right:none;border-bottom:1px solid var(--ec-border);flex:100%}.ms-trust>div:last-child{border-bottom:none}.ms-pillars,.ms-platform-detail{grid-template-columns:1fr}.ms-platform-stats{flex-direction:column}.ms-platform-stat{border-right:none;border-bottom:1px solid var(--ec-border)}.ms-platform-stat:last-child{border-bottom:none}.ms-platform-flow{border-radius:14px;max-width:none}.ms-marking-capabilities{grid-template-columns:1fr 1fr}.ms-showcase-split{grid-template-columns:1fr}.ms-showcase-head{align-items:flex-start}.ms-feat-grid,.ms-steps{grid-template-columns:1fr}.ms-feat--wide{grid-column:span 1}.ms-courses-promo{grid-template-columns:1fr;padding:28px 18px}.ms-final-cta{padding:48px 24px}.ms-course-mini,.ms-course-mini--showcase{grid-template-columns:1fr}.ms-platform-detail-wrap{padding-top:48px}.ms-detail-panel{padding:22px 18px}.ms-pillars-wrap{padding-top:48px}.ms-scard-grid{grid-template-columns:1fr 1fr}.ms-founder{grid-template-columns:1fr}.ms-cmp-row{grid-template-columns:1.2fr 1fr 1fr}.ms-cmp-row>div:nth-child(4){display:none}}@media (max-width:520px){.ms-pg{padding:0 14px}.ms-courses-promo{padding:22px 14px}.ms-final-cta{border-radius:16px;padding:36px 16px}.ms-community-flow{padding:14px}.ms-pillar-actions,.ms-detail-actions,.ms-cta-row{flex-direction:column;align-items:stretch;width:100%}.ms-pillar-actions>a,.ms-detail-actions>a,.ms-cta-row>a,.ms-pillar-actions>button,.ms-detail-actions>button,.ms-cta-row>button{width:100%;min-height:var(--ec-touch-min,44px);justify-content:center}.ms-scard-grid,.ms-marking-capabilities{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){.ms-fade-in{animation:none}}.ms-mark-shell{background-image:radial-gradient(820px circle at 50% -180px, var(--ec-brand-muted) 0%, transparent 58%), radial-gradient(520px circle at 12% 24%, var(--ec-accent-warm) 0%, transparent 55%), radial-gradient(480px circle at 88% 32%, var(--ec-acc-violet) 0%, transparent 52%);padding-top:40px;padding-bottom:64px}@supports (color:color-mix(in lab, red, red)){.ms-mark-shell{background-image:radial-gradient(820px circle at 50% -180px, var(--ec-brand-muted) 0%, transparent 58%), radial-gradient(520px circle at 12% 24%, color-mix(in srgb, var(--ec-accent-warm) 10%, transparent) 0%, transparent 55%), radial-gradient(480px circle at 88% 32%, color-mix(in srgb, var(--ec-acc-violet) 8%, transparent) 0%, transparent 52%)}}.ms-mark-shell{background-repeat:no-repeat}.ms-mark-hero{text-align:center;margin-bottom:8px}.ms-mark-hero-eyebrow{color:var(--ec-brand);margin-bottom:10px!important}.ms-mark-hero-title{font-family:var(--font-display);letter-spacing:-.02em;color:var(--ec-text-primary);margin:0 0 12px;font-size:clamp(1.75rem,4vw,2.35rem);font-weight:500;line-height:1.12}.ms-mark-hero-lead{max-width:36rem;color:var(--ec-text-secondary);margin:0 auto;font-size:15px;line-height:1.6}.ms-mark-form-shell{margin-top:4px}.ms-mark-setup-panel{flex-direction:column;gap:22px;display:flex}.ms-mark-mode-panel{flex-direction:column;align-items:center;gap:14px;display:flex}.ms-mark-mode-panel .ms-lvl-tabs-scroll{justify-content:center;width:100%;display:flex}.ms-mark-mode-callout{text-align:center;max-width:40rem;color:var(--ec-text-secondary);border:1px solid var(--ec-border);background:var(--ec-surface);border-radius:14px;margin:0;padding:12px 16px;font-size:13px;line-height:1.55}@supports (color:color-mix(in lab, red, red)){.ms-mark-mode-callout{background:color-mix(in srgb, var(--ec-surface) 88%, var(--ec-brand-muted))}}.ms-mark-context-card{border-radius:var(--ec-radius-lg,16px);box-shadow:0 8px 28px var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ms-mark-context-card{box-shadow:0 8px 28px color-mix(in srgb, var(--ec-brand) 8%, transparent)}}.ms-mark-pg{max-width:var(--ec-maxw,1200px);min-width:0;margin:0 auto;padding:0 32px}.ms-mark-pg--narrow{max-width:48rem}.ms-mark-steps-bar{font-family:var(--font-mono);color:var(--ec-text-faint);flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;margin:22px 0 32px;padding:0;font-size:12px;list-style:none;display:flex}.ms-mstep{align-items:center;gap:8px;display:flex}.ms-mstep .dot{border:1.5px solid var(--ec-border);border-radius:999px;place-items:center;width:26px;height:26px;font-size:11.5px;font-weight:700;display:grid}.ms-mstep.on{color:var(--ec-text-primary)}.ms-mstep.on .dot{border-color:var(--ec-brand);background:var(--ec-brand-muted);color:var(--ec-brand)}.ms-mstep.done .dot{background:var(--ec-brand);border-color:var(--ec-brand);color:var(--ec-on-brand-text,#fff)}.ms-mstep-sep{background:var(--ec-border);width:36px;height:1px}.ms-lvl-tabs{background:var(--ec-bg-soft);border:1px solid var(--ec-border);box-shadow:inset 0 1px 0 var(--ec-surface);border-radius:999px;gap:4px;margin-bottom:0;padding:4px;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.ms-lvl-tabs{box-shadow:inset 0 1px 0 color-mix(in srgb, var(--ec-surface) 65%, transparent)}}.ms-lvl-tab{font-family:var(--font-sans);color:var(--ec-text-secondary);cursor:pointer;white-space:nowrap;background:0 0;border:none;border-radius:999px;padding:9px 22px;font-size:14.5px;font-weight:600;transition:color .15s,box-shadow .15s,transform .15s,background .15s}.ms-lvl-tab:hover{color:var(--ec-text-primary)}.ms-lvl-tab.on{background:var(--ec-surface);color:var(--ec-brand);box-shadow:var(--ec-card-shadow,0 4px 14px #00000014);transform:translateY(-1px)}.ms-lvl-tab.is-disabled{opacity:.42;cursor:not-allowed}.ms-lvl-tab.is-disabled:hover{color:var(--ec-text-secondary);box-shadow:none;transform:none}@media (prefers-reduced-motion:reduce){.ms-lvl-tab.on{transform:none}}.ms-upload-grid{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);align-items:start;gap:28px;display:grid}.ms-mark-upload-zone{border-radius:var(--ec-radius-lg,16px);border:1px solid var(--ec-border);flex-direction:column;gap:18px;min-width:0;padding:20px 18px 22px;display:flex}.ms-mark-step-label{align-items:flex-start;gap:12px;display:flex}.ms-mark-step-label-num{width:30px;height:30px;font-family:var(--font-mono);color:var(--ec-brand);background:var(--ec-brand-muted);border:1.5px solid var(--ec-brand);border-radius:999px;flex-shrink:0;justify-content:center;align-items:center;font-size:12px;font-weight:700;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.ms-mark-step-label-num{border:1.5px solid color-mix(in srgb, var(--ec-brand) 35%, transparent)}}.ms-mark-step-label-copy{flex-direction:column;gap:2px;min-width:0;padding-top:2px;display:flex}.ms-mark-step-label-title{letter-spacing:-.01em;color:var(--ec-text-primary);font-size:16px;font-weight:700;line-height:1.25}.ms-mark-step-label-hint{font-family:var(--font-mono);color:var(--ec-text-secondary);font-size:11px;font-weight:500}.ms-mark-or-divider{color:var(--ec-text-faint);font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;align-items:center;gap:12px;font-size:10px;font-weight:700;display:flex}.ms-mark-or-divider:before,.ms-mark-or-divider:after{content:"";background:var(--ec-border);flex:1;height:1px}.ms-q-upload-drop:focus-visible{outline:2px solid var(--ec-brand);outline-offset:2px}.ms-q-upload-file-icon{background:var(--ec-brand-muted);color:var(--ec-brand)}.ms-q-upload-drop{flex-direction:column;justify-content:center;align-items:center;min-height:148px;display:flex}.ms-q-upload-file{border:1px solid var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ms-q-upload-file{border:1px solid color-mix(in srgb, var(--ec-brand) 20%, var(--ec-border))}}.ms-q-upload-file{background:var(--ec-brand-muted)}@supports (color:color-mix(in lab, red, red)){.ms-q-upload-file{background:color-mix(in srgb, var(--ec-brand-muted) 35%, var(--ec-surface))}}.ms-upload-preview-wrap{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-lg,16px);justify-content:center;align-items:center;width:100%;min-height:140px;max-height:min(55vh,520px);padding:12px;display:flex;overflow:hidden}.ms-upload-preview{object-fit:contain;width:auto;max-width:100%;height:auto;max-height:min(52vh,496px);display:block}.ms-upload-thumbs{flex-wrap:wrap;gap:12px;margin-top:12px;display:flex}.ms-upload-thumb{border:2px solid var(--ec-border);background:var(--ec-bg-soft);cursor:pointer;border-radius:8px;flex-shrink:0;width:76px;height:102px;padding:0;transition:border-color .15s,box-shadow .15s;position:relative;overflow:hidden}.ms-upload-thumb.on{border-color:var(--ec-brand);box-shadow:0 0 0 1px var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ms-upload-thumb.on{box-shadow:0 0 0 1px color-mix(in srgb, var(--ec-brand) 35%, transparent)}}.ms-upload-thumb img{object-fit:contain;object-position:center;width:100%;height:100%}.ms-upload-page-thumb{background:var(--ec-bg-soft)}.ms-upload-page-thumb img{object-fit:contain;object-position:center}.ms-mark-form-card{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-lg,16px);box-shadow:var(--ec-shadow-card,0 1px 3px #0000000f);min-width:0;padding:22px 22px 20px;position:relative;overflow:hidden}.ms-mark-form-card:before{content:"";background:linear-gradient(90deg, var(--ec-brand) 0%, var(--ec-accent-warm) 100%);height:3px;position:absolute;top:0;left:0;right:0}@supports (color:color-mix(in lab, red, red)){.ms-mark-form-card:before{background:linear-gradient(90deg, var(--ec-brand) 0%, color-mix(in srgb, var(--ec-accent-warm) 70%, var(--ec-brand)) 100%)}}.ms-mark-form-body{margin-top:18px}.ms-mark-submit-panel{border-top:1px solid var(--ec-border);margin-top:8px;padding-top:18px}.ms-mark-form-card h3{font-family:var(--font-display);color:var(--ec-text-primary);margin:0 0 18px;font-size:23px;font-weight:500}.ms-result-grid{grid-template-columns:1.05fr .95fr;align-items:start;gap:36px;display:grid}.ms-audit{position:sticky;top:96px}.ms-audit-card{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-lg,16px);box-shadow:var(--ec-shadow-card,0 1px 3px #0000000f);overflow:hidden}.ms-audit-head{border-bottom:1px solid var(--ec-border);justify-content:space-between;align-items:center;gap:10px;padding:14px 16px;display:flex}.ms-audit-row{border-bottom:1px solid var(--ec-border);cursor:pointer;text-align:left;width:100%;color:inherit;background:0 0;border-top:none;border-left:none;border-right:none;grid-template-columns:50px 1fr 40px;align-items:center;gap:12px;padding:12px 16px;font-family:inherit;font-size:14px;transition:background .12s;display:grid}.ms-audit-row:hover{background:var(--ec-bg-soft)}.ms-audit-row.sel{background:var(--ec-brand-muted)}.ms-audit-row .code{font-family:var(--font-mono);font-weight:700}.ms-audit-row.earn .code,.ms-audit-row.earn .pts{color:var(--ec-brand)}.ms-audit-row.lost .code,.ms-audit-row.lost .pts{color:var(--ec-error-ink,var(--ec-score-low,#b04848))}.ms-audit-row .pts{text-align:right;font-family:var(--font-mono);font-weight:700}.ms-audit-row .desc{color:var(--ec-text-secondary);min-width:0;line-height:1.4;overflow-x:auto}.ms-mark-snippet.prose{max-width:100%;display:inline;overflow-x:auto}.ms-mark-snippet.prose p{color:inherit;line-height:inherit;margin:0;display:inline}.ms-mark-snippet .katex{font-size:.95em}.ms-mark-snippet .katex-display{max-width:100%;overflow-x:auto}.ms-mark-snippet--inline.prose{display:contents}.ms-mark-ink-block{min-width:0;margin-bottom:20px;overflow-x:hidden}.ms-mark-ink-block img{object-fit:contain;width:100%;max-height:min(55vh,520px)}@media (max-width:640px){.ms-mark-ink-block img{height:auto;max-height:none}.examiner-ink-overlay{max-width:100%}}.ms-audit-total{background:var(--ec-brand-muted);border-radius:0 0 13px 13px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;padding:16px;display:flex}.ms-grade-pill{font-family:var(--font-display);color:var(--ec-brand);white-space:nowrap;font-size:18px;font-style:italic}.ms-examiner-note-card{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-lg,16px);box-shadow:var(--ec-shadow-card,0 1px 3px #0000000f);margin-top:16px;padding:20px 22px}.ms-greennote{font-family:var(--font-handwritten,"Caveat", cursive);color:var(--ec-brand);margin-top:4px;font-size:21px;line-height:1.25;display:block;transform:rotate(-1deg)}.ms-greennote--lost{color:var(--ec-error-ink,var(--ec-score-low,#b04848))}.ms-mark-result-head{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:16px;margin-bottom:38px;display:flex}.ms-band-meter{gap:6px;margin:16px 0 6px;display:flex}.ms-band-meter span{background:var(--ec-bg-soft);border:1px solid var(--ec-border);border-radius:5px;flex:1;height:10px}.ms-band-meter span.on{background:var(--ec-brand);border-color:var(--ec-brand)}.ms-crit{border-bottom:1px solid var(--ec-border);align-items:baseline;gap:12px;padding:11px 0;font-size:14px;display:flex}.ms-crit:last-child{border-bottom:none}.ms-crit .m{font-family:var(--font-mono);flex-shrink:0;width:52px;font-weight:700}@media (max-width:640px){.ms-marking-result{min-width:0;overflow-x:clip}.ms-marking-result .ms-result-grid>*{min-width:0}}.ms-mark-secondary{flex-direction:column;gap:28px;margin-top:48px;display:flex}.ms-question-preview{border-radius:var(--ec-radius-lg,16px);border:1px solid var(--ec-border);background:var(--ec-bg-soft);min-width:0;margin-top:12px;padding:14px 16px}.ms-question-preview-loading{color:var(--ec-text-secondary);align-items:center;gap:8px;font-size:13px;display:flex}.ms-question-preview-meta{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:12px;display:flex}.ms-question-preview-badge{font-family:var(--font-mono);letter-spacing:.06em;text-transform:uppercase;border:1px solid var(--ec-border);border-radius:999px;padding:4px 8px;font-size:10px;font-weight:700}.ms-question-preview-badge--ok{color:var(--ec-brand);border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ms-question-preview-badge--ok{border-color:color-mix(in srgb, var(--ec-brand) 35%, transparent)}}.ms-question-preview-badge--ok{background:var(--ec-brand-muted)}.ms-question-preview-stat{font-family:var(--font-mono);color:var(--ec-text-secondary);font-size:11px;font-weight:600}.ms-question-preview-text{color:var(--ec-text-primary);min-width:0;max-height:12rem;font-size:14px;line-height:1.55;overflow-y:auto}.ms-question-preview-tags{flex-wrap:wrap;gap:6px;margin-top:12px;display:flex}.ms-question-preview-missing{color:var(--ec-text-secondary);margin:0;font-size:13px;line-height:1.5}.ms-question-context{min-width:0;margin-bottom:32px;padding:20px 22px}.ms-question-context-head{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:16px;display:flex}.ms-question-context-time{font-family:var(--font-mono);color:var(--ec-text-secondary);white-space:nowrap;align-items:center;gap:6px;font-size:11px;display:inline-flex}.ms-question-context-stats{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px 20px;margin:0 0 16px;padding:0;display:grid}.ms-question-context-stats>div{min-width:0}.ms-question-context-stats dt{font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ec-text-faint);margin-bottom:4px;font-size:10px;font-weight:700}.ms-question-context-stats dd{color:var(--ec-text-primary);margin:0;font-size:14px;font-weight:600;line-height:1.35}.ms-question-context-scheme{color:var(--ec-brand)}.ms-question-context-body{border-top:1px solid var(--ec-border);margin-top:4px;padding-top:16px}.ms-question-context-tags{border-top:1px solid var(--ec-border);flex-wrap:wrap;gap:8px;margin-top:14px;padding-top:14px;display:flex}.ms-marking-mode-hint{border:1px solid var(--ec-brand);border-radius:14px;padding:14px 16px}@supports (color:color-mix(in lab, red, red)){.ms-marking-mode-hint{border:1px solid color-mix(in srgb, var(--ec-brand) 22%, var(--ec-border))}}.ms-marking-mode-hint{background:var(--ec-brand-muted)}@supports (color:color-mix(in lab, red, red)){.ms-marking-mode-hint{background:color-mix(in srgb, var(--ec-brand-muted) 55%, var(--ec-bg-soft))}}.ms-marking-mode-hint-title{color:var(--ec-text-primary);margin:0 0 4px;font-size:13px;font-weight:700}.ms-marking-mode-hint-body{color:var(--ec-text-secondary);margin:0;font-size:12px;line-height:1.5}.ms-scheme-rubric{border-radius:var(--ec-radius-lg,16px);border:1px solid var(--ec-border);background:var(--ec-surface);min-width:0;margin-top:16px;padding:16px 18px}.ms-scheme-rubric--compact{margin-top:16px}.ms-scheme-rubric-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:12px;display:flex}.ms-scheme-rubric-type{font-family:var(--font-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--ec-text-secondary);font-size:10px;font-weight:700}.ms-scheme-rubric-points{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.ms-scheme-rubric-points li{border:1px solid #0000;border-radius:10px;grid-template-columns:52px 1fr;align-items:start;gap:10px;padding:8px 10px;font-size:13px;line-height:1.45;display:grid}.ms-scheme-rubric-points li.is-active{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ms-scheme-rubric-points li.is-active{border-color:color-mix(in srgb, var(--ec-brand) 35%, transparent)}}.ms-scheme-rubric-points li.is-active{background:var(--ec-brand-muted)}.ms-scheme-rubric-points--preview li{border:none;border-radius:0;padding:6px 0}.ms-scheme-rubric-code{font-family:var(--font-mono);color:var(--ec-brand);font-size:12px;font-weight:700}.ms-scheme-rubric-desc{color:var(--ec-text-secondary);min-width:0;overflow-x:auto}.ms-scheme-rubric-bands{flex-direction:column;gap:12px;margin-top:8px;display:flex}.ms-scheme-rubric-band-label{font-family:var(--font-mono);color:var(--ec-text-primary);margin:0 0 6px;font-size:11px;font-weight:700}.ms-scheme-rubric-extra{border-top:1px solid var(--ec-border);margin-top:14px;padding-top:14px}.ms-scheme-rubric-list{color:var(--ec-text-secondary);margin:0;padding-left:1.1rem;font-size:13px;line-height:1.5}.ms-scheme-rubric-answers,.ms-scheme-rubric-notes{color:var(--ec-text-secondary);margin:12px 0 0;font-size:13px;line-height:1.5}.ms-question-preview-rubric{border-top:1px solid var(--ec-border);margin-top:12px;padding-top:12px}.ms-question-preview-more{color:var(--ec-text-faint);margin:8px 0 0;font-size:12px}.ms-scheme-criterion{border-top:1px dashed var(--ec-border);margin-top:14px;padding-top:14px}@media (max-width:900px){.ms-mark-pg{padding:0 18px}.ms-upload-grid,.ms-result-grid{grid-template-columns:1fr}.ms-audit{position:static}.ms-mstep-sep{width:20px}}@media (prefers-reduced-motion:reduce){.ms-lvl-tab,.ms-audit-row{transition:none}}.ms-wp-grid{grid-template-columns:.95fr 1.05fr;align-items:start;gap:36px;display:grid}.ms-wp-grade-card{text-align:center;background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-lg,16px);box-shadow:var(--ec-shadow-card,0 1px 3px #0000000f);padding:36px 30px 30px}.ms-wp-qrow{border-bottom:1px solid var(--ec-border);cursor:pointer;text-align:left;width:100%;color:inherit;background:0 0;border-top:none;border-left:none;border-right:none;grid-template-columns:56px 1fr minmax(90px,120px) 64px;align-items:center;gap:14px;padding:13px 18px;font-family:inherit;transition:background .12s;display:grid}.ms-wp-qrow:hover:not(:disabled){background:var(--ec-bg-soft)}.ms-wp-qrow:disabled{cursor:default}.ms-wp-qrow .qn{font-family:var(--font-mono);font-size:13px;font-weight:700}.ms-wp-qrow .qt{color:var(--ec-text-secondary);font-size:14px;line-height:1.35}.ms-wp-qrow .qs{font-family:var(--font-mono);text-align:right;font-size:13px;font-weight:700}.ms-wp-qbar{background:var(--ec-bg-soft);border-radius:4px;width:100%;min-width:90px;height:7px;overflow:hidden}.ms-wp-qbar i{border-radius:4px;height:100%;display:block}.ms-wp-skipped{opacity:.55}@media (max-width:900px){.ms-wp-grid{grid-template-columns:1fr}.ms-wp-qrow{grid-template-columns:48px 1fr 64px}.ms-wp-qbar{display:none}}.ms-mark-board-picker{border:none;margin:0;padding:0}.ms-mark-board-grid{grid-template-columns:1fr 1fr;gap:10px;display:grid}@media (max-width:520px){.ms-mark-board-grid{grid-template-columns:1fr}}.ms-mark-board-option{text-align:left;border:1.5px solid var(--ec-border);background:var(--ec-surface-raised);color:var(--ec-text-secondary);cursor:pointer;border-radius:16px;flex-direction:column;align-items:flex-start;gap:4px;padding:14px 16px;transition:border-color .16s,background .16s,box-shadow .16s,transform .16s;display:flex;position:relative}.ms-mark-board-option:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ms-mark-board-option:hover{border-color:color-mix(in srgb, var(--ec-brand) 35%, var(--ec-border))}}.ms-mark-board-option:hover{background:var(--ec-brand-muted)}.ms-mark-board-picker:disabled .ms-mark-board-option{opacity:.55;cursor:wait;pointer-events:none}.ms-mark-board-option.on{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ms-mark-board-option.on{border-color:color-mix(in srgb, var(--ec-brand) 55%, var(--ec-border))}}.ms-mark-board-option.on{background:var(--ec-brand-muted);color:var(--ec-text-primary);box-shadow:0 4px 16px var(--ec-brand), inset 0 1px 0 var(--ec-surface)}@supports (color:color-mix(in lab, red, red)){.ms-mark-board-option.on{box-shadow:0 4px 16px color-mix(in srgb, var(--ec-brand) 12%, transparent), inset 0 1px 0 color-mix(in srgb, var(--ec-surface) 70%, transparent)}}.ms-mark-board-option-label{font-size:14px;font-weight:650;line-height:1.3}.ms-mark-board-option-hint{opacity:.85;font-size:11px;line-height:1.45}.ms-mark-board-option:has(input:focus-visible){outline:2px solid var(--ec-brand);outline-offset:2px}.ms-mark-board-option-input{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.ms-subjects-page{padding-top:56px;padding-bottom:88px}.ms-subjects-toolbar{flex-wrap:wrap;align-items:center;gap:18px;margin-top:28px;display:flex}.ms-subj-search{background:var(--ec-surface);border:1.5px solid var(--ec-border);border-radius:999px;flex:260px;align-items:center;gap:10px;max-width:420px;padding:12px 20px;display:flex}.ms-subj-search:focus-within{border-color:var(--ec-brand);box-shadow:0 0 0 3px var(--ec-brand-muted)}.ms-subj-search input{font-family:var(--font-sans);color:var(--ec-text-primary);background:0 0;border:none;outline:none;flex:1;min-width:0;font-size:15px}.ms-subj-search input::placeholder{color:var(--ec-text-faint)}.ms-subj-search .si{color:var(--ec-text-faint);flex-shrink:0;font-size:15px}.ms-lvl-tab .soon{font-family:var(--font-handwritten,"Caveat", cursive);color:var(--ec-brand);margin-left:6px;font-size:15px}.ms-lvl-tab:disabled{color:var(--ec-text-faint);cursor:default;font-weight:500}.ms-zstats{border:1px solid var(--ec-border);background:var(--ec-surface);border-radius:14px;gap:0;margin-top:36px;display:flex;overflow:hidden}.ms-zstats>div{border-right:1px solid var(--ec-border);text-align:center;flex:1;padding:18px 22px}.ms-zstats>div:last-child{border-right:none}.ms-zstats b{font-family:var(--font-display);color:var(--ec-brand);font-size:26px;font-weight:600;display:block}.ms-zstats span{font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--ec-text-faint);font-size:10px}.ms-sd-head{flex-wrap:wrap;align-items:center;gap:22px;margin-top:22px;display:flex}.ms-sd-glyph{width:72px;height:72px;font-family:var(--font-display);color:var(--sc,var(--ec-brand));background:var(--sc,var(--ec-brand));border-radius:18px;place-items:center;font-size:36px;font-weight:600;display:grid}@supports (color:color-mix(in lab, red, red)){.ms-sd-glyph{background:color-mix(in srgb, var(--sc,var(--ec-brand)) 13%, transparent)}}.ms-sd-glyph{flex-shrink:0}@media (max-width:640px){.ms-sd-head{row-gap:16px}.ms-sd-head>.min-w-0.flex-1{flex-basis:200px}.ms-sd-head>a.ec-btn-primary{justify-content:center;width:100%;margin-left:0}}.ms-sd-grid{grid-template-columns:1.5fr 1fr;align-items:start;gap:28px;margin-top:40px;display:grid}.ms-sd-card{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-lg,16px);box-shadow:var(--ec-shadow-card,0 1px 3px #0000000f)}.ms-sd-card-pad{padding:22px 24px}.ms-sd-card-head{border-bottom:1px solid var(--ec-border);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:14px 20px;display:flex}.ms-sess{border-bottom:1px solid var(--ec-border);padding:18px 20px}.ms-sess:last-child{border-bottom:none}.ms-sess-name{justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:12px;display:flex}.ms-sess-name b{font-family:var(--font-display);color:var(--ec-text-primary);font-size:19px;font-weight:600}.ms-variant-row{flex-wrap:wrap;gap:8px;display:flex}.ms-variant{font-family:var(--font-mono);border:1px solid var(--ec-border);background:var(--ec-paper);cursor:pointer;color:var(--ec-text-secondary);border-radius:9px;padding:8px 14px;font-size:12.5px;font-weight:600;text-decoration:none;transition:border-color .12s,color .12s,background .12s}.ms-variant:hover{border-color:var(--sc,var(--ec-brand));color:var(--sc,var(--ec-brand));background:var(--sc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.ms-variant:hover{background:color-mix(in srgb, var(--sc,var(--ec-brand)) 9%, transparent)}}.ms-yr-chips{flex-wrap:wrap;gap:7px;display:flex}.ms-yr-chip{font-family:var(--font-mono);border:1px solid var(--ec-border);color:var(--ec-text-secondary);cursor:pointer;background:0 0;border-radius:999px;padding:6px 13px;font-size:11.5px}.ms-yr-chip.on{border-color:var(--ec-brand);color:var(--ec-brand);background:var(--ec-brand-muted);font-weight:600}.ms-topic-row{border-bottom:1px solid var(--ec-border);justify-content:space-between;align-items:center;gap:10px;padding:11px 0;font-size:14.5px;display:flex}.ms-topic-row:last-child{border-bottom:none}.ms-subject-faq{border-top:1px solid var(--ec-border);margin-top:56px;padding-top:40px}@media (max-width:900px){.ms-zstats{flex-wrap:wrap}.ms-zstats>div{border-bottom:1px solid var(--ec-border);flex:45%}.ms-sd-grid{grid-template-columns:1fr}.ms-subjects-toolbar{flex-direction:column;align-items:stretch}.ms-subj-search{max-width:none}}@media (max-width:560px){.ms-scard-grid{grid-template-columns:1fr}}.ms-pp-grid{grid-template-columns:repeat(auto-fill,minmax(248px,1fr));gap:14px;margin:0;padding:0;list-style:none;display:grid}.subj-chapters{margin-top:40px}.subj-chapters-head{justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:16px;display:flex}.subj-chapter-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:10px;margin:0;padding:0;list-style:none;display:grid}.subj-chapter{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:12px;align-items:center;gap:12px;padding:13px 15px;text-decoration:none;transition:transform .15s,border-color .15s,background .15s;display:flex}.subj-chapter:hover{border-color:var(--sc,var(--ec-brand));transform:translate(3px)}@supports (color:color-mix(in lab, red, red)){.subj-chapter:hover{border-color:color-mix(in srgb, var(--sc,var(--ec-brand)) 45%, var(--ec-border))}}.subj-chapter:hover{background:var(--sc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.subj-chapter:hover{background:color-mix(in srgb, var(--sc,var(--ec-brand)) 5%, var(--ec-surface))}}.subj-chapter-n{letter-spacing:.02em;min-width:40px;color:var(--sc,var(--ec-brand));text-align:left;flex-shrink:0;font-size:12px;font-weight:600}.subj-chapter-title{min-width:0;color:var(--ec-text-primary);flex:1;font-size:14.5px;font-weight:500}.subj-chapter-go{color:var(--ec-text-faint);flex-shrink:0;transition:color .15s,transform .15s}.subj-chapter:hover .subj-chapter-go{color:var(--sc,var(--ec-brand));transform:translate(2px)}.ms-pp-card{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-card-lg,16px);box-shadow:var(--ec-shadow-card,0 1px 3px #0000000f);align-items:center;gap:14px;padding:16px 18px;text-decoration:none;transition:border-color .18s,box-shadow .18s,transform .18s;display:flex}.ms-pp-card:hover{border-color:var(--acc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.ms-pp-card:hover{border-color:color-mix(in srgb, var(--acc,var(--ec-brand)) 45%, var(--ec-border))}}.ms-pp-card:hover{box-shadow:var(--ec-card-hover-shadow-warm,0 12px 28px #0000001a);transform:translateY(-2px)}.ms-pp-glyph{width:44px;height:44px;font-family:var(--font-display);color:var(--acc,var(--ec-brand));background:linear-gradient(135deg, var(--acc,var(--ec-brand)), var(--acc,var(--ec-brand)));border-radius:12px;place-items:center;font-size:22px;font-weight:600;display:grid}@supports (color:color-mix(in lab, red, red)){.ms-pp-glyph{background:linear-gradient(135deg, color-mix(in srgb, var(--acc,var(--ec-brand)) 24%, transparent), color-mix(in srgb, var(--acc,var(--ec-brand)) 8%, transparent))}}.ms-pp-glyph{border:1px solid var(--acc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.ms-pp-glyph{border:1px solid color-mix(in srgb, var(--acc,var(--ec-brand)) 22%, transparent)}}.ms-pp-glyph{flex-shrink:0}.ms-pp-title{color:var(--ec-text-primary);font-weight:600;line-height:1.2;display:block}.ms-pp-code{color:var(--ec-text-faint);font-size:.85em}.ms-pp-new{vertical-align:middle;letter-spacing:.06em;text-transform:uppercase;color:var(--acc,var(--ec-brand));border:1px solid var(--acc,var(--ec-brand));margin-left:8px;font-family:IBM Plex Mono,monospace;font-size:10px;font-weight:700;display:inline-block}@supports (color:color-mix(in lab, red, red)){.ms-pp-new{border:1px solid color-mix(in srgb, var(--acc,var(--ec-brand)) 35%, transparent)}}.ms-pp-new{border-radius:999px;padding:2px 7px}.ms-pp-meta{color:var(--ec-text-secondary);margin-top:3px;font-size:12.5px;display:block}.ms-pp-cta{color:var(--acc,var(--ec-brand));flex-shrink:0;font-size:18px}.ms-pp-year-list{flex-direction:column;gap:12px;margin:0;padding:0;list-style:none;display:flex}.ms-pp-year-head{justify-content:space-between;align-items:baseline;gap:12px;display:flex}.ms-pp-year{font-family:var(--font-display);color:var(--ec-text-primary);font-size:22px;font-weight:600}.ms-pp-paperno{color:var(--ec-text-faint);font-size:12.5px}.ms-tq-list{flex-direction:column;gap:12px;margin:0;padding:0;list-style:none;display:flex}.ms-tq-item{border-left:3px solid var(--sc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.ms-tq-item{border-left:3px solid color-mix(in srgb, var(--sc,var(--ec-brand)) 55%, transparent)}}.ms-tq-meta{justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:6px;display:flex}.ms-tq-paper{font-family:var(--font-mono,ui-monospace, monospace);color:var(--ec-text-secondary);font-size:12px}.ms-tq-marks{color:var(--sc,var(--ec-brand));flex-shrink:0;font-size:12px;font-weight:600}.ms-tq-stem{color:var(--ec-text-primary);margin:0 0 10px;font-size:15px;line-height:1.5}.ms-pp-topic-grid{flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;display:flex}.nav-dd{display:inline-flex;position:relative}.nav-dd-trigger{cursor:pointer;font:inherit;color:inherit;background:0 0;border:none;align-items:center;gap:3px;display:inline-flex}.nav-dd-caret{opacity:.65;width:13px;height:13px;transition:transform .2s}.nav-dd-caret--open{transform:rotate(180deg)}.nav-dd-menu{background:var(--ec-surface,#fffcf4);border:1px solid var(--ec-border,#e3dac6);border-radius:12px;flex-direction:column;gap:2px;min-width:210px;padding:6px;display:flex;box-shadow:0 14px 36px #0003}.nav-dd-menu:not(.nav-dd-menu--portal){z-index:60;position:absolute;top:calc(100% + 8px);left:0}.nav-dd-menu--portal{overscroll-behavior:contain;max-width:280px;max-height:min(70vh,420px);position:fixed;overflow-y:auto}body.ec-nav-dropdown-open .ec-nav-wrap{z-index:221}.nav-dd-item{min-height:var(--ec-touch-min,44px);color:var(--ec-text-primary,#25221b);border-radius:8px;flex-direction:column;justify-content:center;gap:1px;padding:9px 12px;text-decoration:none;display:flex}.nav-dd-item:hover{background:var(--ec-brand,#19774d)}@supports (color:color-mix(in lab, red, red)){.nav-dd-item:hover{background:color-mix(in srgb, var(--ec-brand,#19774d) 8%, transparent)}}.nav-dd-item--active .nav-dd-item-label{color:var(--ec-brand,#19774d)}.nav-dd-item-label{font-size:14px;font-weight:600}.nav-dd-item-sub{color:var(--ec-text-faint,#837b64);font-size:11.5px}.nav-mobile-accordion{flex-direction:column;display:flex}.nav-mobile-accordion-trigger{cursor:pointer;width:100%;font:inherit;text-align:left;min-height:var(--ec-touch-min,44px);border:none;border-bottom:1px solid var(--ec-border);font-family:var(--font-display,"Newsreader", Georgia, serif);color:var(--ec-text-primary);background:0 0;justify-content:space-between;align-items:center;gap:8px;padding:11px 4px;font-size:19px;display:flex}.nav-mobile-accordion-caret{opacity:.65;flex-shrink:0;width:14px;height:14px;transition:transform .2s}.nav-mobile-accordion-caret--open{transform:rotate(180deg)}.nav-mobile-accordion-panel{flex-direction:column;gap:2px;padding:0 8px 8px 12px;display:flex}.nav-mobile-accordion-item{color:var(--ec-text-primary,inherit);min-height:var(--ec-touch-min,44px);border-radius:8px;flex-direction:column;justify-content:center;gap:1px;padding:10px 12px;text-decoration:none;display:flex}.nav-mobile-accordion-item:hover{background:var(--ec-brand,#19774d)}@supports (color:color-mix(in lab, red, red)){.nav-mobile-accordion-item:hover{background:color-mix(in srgb, var(--ec-brand,#19774d) 8%, transparent)}}.nav-mobile-accordion-item-label{font-size:14px;font-weight:600}.nav-mobile-accordion-item-sub{color:var(--ec-text-faint,#837b64);font-size:11.5px}.ec-nav-mobile-menu-items{display:contents}.community-notes{margin-top:48px}.community-head{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:16px;display:flex}.community-sub{color:var(--ec-text-secondary);max-width:52ch;margin:4px 0 0}.community-contribute{flex-shrink:0;padding:10px 16px;font-size:14px}.community-empty,.community-empty-card{color:var(--ec-text-secondary)}.community-empty-card{border:1px dashed var(--ec-border);text-align:center;border-radius:14px;padding:24px}.community-note-list{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.community-note-row{border:1px solid var(--ec-border);background:var(--ec-surface);border-radius:12px;align-items:stretch;gap:12px;transition:border-color .15s;display:flex}.community-note-row:hover{border-color:var(--sc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.community-note-row:hover{border-color:color-mix(in srgb, var(--sc,var(--ec-brand)) 40%, var(--ec-border))}}.community-vote{border:none;border-right:1px solid var(--ec-border);cursor:pointer;min-width:52px;color:var(--ec-text-faint);background:0 0;border-radius:12px 0 0 12px;flex-direction:column;justify-content:center;align-items:center;gap:1px;padding:8px;display:flex}.community-vote:hover:not(:disabled){color:var(--sc,var(--ec-brand));background:var(--sc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.community-vote:hover:not(:disabled){background:color-mix(in srgb, var(--sc,var(--ec-brand)) 6%, transparent)}}.community-vote.on{color:var(--sc,var(--ec-brand))}.community-vote:disabled{cursor:default}.community-vote-caret{font-size:11px;line-height:1}.community-vote-n{font-variant-numeric:tabular-nums;font-size:13px;font-weight:600}.community-note-main{flex-direction:column;flex:1;gap:2px;min-width:0;padding:11px 14px 11px 4px;text-decoration:none;display:flex}.community-note-title{color:var(--ec-text-primary);font-size:15px;font-weight:500}.community-note-meta{color:var(--ec-text-faint);font-size:12px}.community-editor{border:1px solid var(--ec-border);background:var(--ec-bg-soft,var(--ec-surface));border-radius:14px;flex-direction:column;gap:14px;margin-bottom:20px;padding:18px;display:flex}.community-field{flex-direction:column;gap:6px;display:flex}.community-label{color:var(--ec-text-primary);font-size:13px;font-weight:600}.community-hint{color:var(--ec-text-faint);font-weight:400}.community-input,.community-textarea{border:1px solid var(--ec-border);background:var(--ec-surface);width:100%;color:var(--ec-text-primary);font:inherit;border-radius:10px;padding:10px 12px;font-size:14px}.community-textarea{resize:vertical;min-height:180px;font-family:IBM Plex Mono,ui-monospace,monospace;font-size:13px}.community-input:focus,.community-textarea:focus{outline:2px solid var(--sc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.community-input:focus,.community-textarea:focus{outline:2px solid color-mix(in srgb, var(--sc,var(--ec-brand)) 50%, transparent)}}.community-input:focus,.community-textarea:focus{outline-offset:1px}.community-preview{border:1px solid var(--ec-border);background:var(--ec-surface);border-radius:10px;min-height:180px;padding:12px 14px}.community-editor-actions{justify-content:flex-end;gap:10px;display:flex}.community-error{color:var(--ec-error-ink,#c0392b);margin:0;font-size:13px}.community-info{color:var(--sc,var(--ec-brand));margin:0;font-size:13px}.community-guidelines{color:var(--ec-text-faint);margin:0;font-size:12px}.community-note-body{color:var(--ec-text-secondary);margin:8px 0 24px;font-size:15.5px;line-height:1.7}.community-actions{border-top:1px solid var(--ec-border);flex-wrap:wrap;align-items:center;gap:10px;padding-top:18px;display:flex}.community-action{border:1px solid var(--ec-border);background:var(--ec-surface);color:var(--ec-text-secondary);cursor:pointer;border-radius:999px;padding:7px 14px;font-size:13px;font-weight:600}.community-action:hover:not(:disabled){border-color:var(--sc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.community-action:hover:not(:disabled){border-color:color-mix(in srgb, var(--sc,var(--ec-brand)) 45%, var(--ec-border))}}.community-action:hover:not(:disabled){color:var(--ec-text-primary)}.community-action.on{color:var(--sc,var(--ec-brand));border-color:var(--sc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.community-action.on{border-color:color-mix(in srgb, var(--sc,var(--ec-brand)) 45%, var(--ec-border))}}.community-action:disabled{opacity:.6;cursor:default}.community-action-report:hover:not(:disabled){color:var(--ec-error-ink,#c0392b)}.community-solved{color:var(--ec-brand);border:1px solid var(--ec-brand);font-size:11px;font-weight:700;display:inline-block}@supports (color:color-mix(in lab, red, red)){.community-solved{border:1px solid color-mix(in srgb, var(--ec-brand) 40%, transparent)}}.community-solved{vertical-align:middle;border-radius:999px;margin-left:6px;padding:1px 8px}.community-thread{margin-top:8px}.community-q{align-items:flex-start;gap:14px;display:flex}.community-q-main{flex:1;min-width:0}.community-q-title{margin:0 0 8px}.community-answer-list{flex-direction:column;gap:16px;margin:12px 0 0;padding:0;list-style:none;display:flex}.community-answer{border-top:1px solid var(--ec-border);align-items:flex-start;gap:14px;padding-top:16px;display:flex}.community-answer.accepted{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.community-answer.accepted{background:color-mix(in srgb, var(--ec-brand) 6%, transparent)}}.community-answer.accepted{border-top:none;border-radius:12px;padding:14px}.community-answer-main{flex:1;min-width:0}.community-answer-foot{justify-content:space-between;align-items:center;gap:12px;margin-top:8px;display:flex}.community-thread .community-vote{border:1px solid var(--ec-border);border-radius:10px;align-self:flex-start}.notif-bell-wrap{display:inline-flex;position:relative}.notif-bell{cursor:pointer;background:0 0;border:none;padding:4px;font-size:17px;line-height:1;position:relative}.notif-badge{background:var(--ec-error-ink,#c0392b);color:#fff;text-align:center;border-radius:999px;min-width:16px;padding:0 5px;font-size:10px;font-weight:700;line-height:16px;position:absolute;top:-3px;right:-4px}.notif-dropdown{background:var(--ec-surface);border:1px solid var(--ec-border);width:min(320px,100vw - 24px);max-height:min(360px,100dvh - 120px);z-index:var(--ec-z-dropdown,80);border-radius:12px;padding:6px;position:absolute;top:calc(100% + 8px);right:0;overflow-y:auto;box-shadow:0 12px 32px #0000002e}.notif-dropdown-head{border-bottom:1px solid var(--ec-border);justify-content:space-between;align-items:center;gap:8px;margin-bottom:4px;padding:8px 10px 6px;display:flex}.notif-dropdown-title{letter-spacing:.06em;text-transform:uppercase;color:var(--ec-text-secondary);font-size:12px;font-weight:800}.notif-dropdown-prefs{color:var(--ec-brand);font-size:12px;font-weight:600;text-decoration:none}.notif-item{color:var(--ec-text-primary);border-radius:8px;align-items:flex-start;gap:10px;padding:10px 12px;font-size:13.5px;text-decoration:none;display:flex}button.notif-item{text-align:left;cursor:pointer;width:100%;font:inherit;background:0 0;border:none}.notif-item:hover{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.notif-item:hover{background:color-mix(in srgb, var(--ec-brand) 7%, transparent)}}.notif-item.unread{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.notif-item.unread{background:color-mix(in srgb, var(--ec-brand) 5%, transparent)}}.notif-item-icon{background:var(--ec-surface-raised);border-radius:8px;flex:none;place-items:center;width:28px;height:28px;font-size:14px;display:grid}.notif-item-main{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.notif-item-title{font-weight:600;line-height:1.35}.notif-item-body{color:var(--ec-text-secondary);text-overflow:ellipsis;white-space:nowrap;font-size:12px;overflow:hidden}.notif-item-time{color:var(--ec-text-faint);margin-top:2px;font-size:11px}.notif-empty{color:var(--ec-text-faint);text-align:center;margin:0;padding:14px;font-size:13px}.notif-dropdown-all{text-align:center;color:var(--ec-brand);border-top:1px solid var(--ec-border);margin-top:4px;padding:10px 12px 8px;font-size:12px;font-weight:700;text-decoration:none;display:block}.notif-dropdown-all:hover{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.notif-dropdown-all:hover{background:color-mix(in srgb, var(--ec-brand) 6%, transparent)}}.notif-dropdown-all:hover{border-radius:0 0 8px 8px}.notif-inbox{flex-direction:column;gap:20px;padding:8px 0 32px;display:flex}.notif-inbox-head{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.notif-inbox-actions{flex-wrap:wrap;gap:8px;display:flex}.notif-inbox-list{flex-direction:column;gap:6px;margin:0;padding:0;list-style:none;display:flex}.notif-inbox-item{border:1px solid var(--ec-border);background:var(--ec-surface);color:var(--ec-text-primary);border-radius:10px;align-items:flex-start;gap:10px;padding:12px 14px;font-size:14px;text-decoration:none;display:flex}.notif-inbox-item.unread{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.notif-inbox-item.unread{border-color:color-mix(in srgb, var(--ec-brand) 35%, var(--ec-border))}}.notif-inbox-item.unread{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.notif-inbox-item.unread{background:color-mix(in srgb, var(--ec-brand) 4%, var(--ec-surface))}}.notif-inbox-item:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.notif-inbox-item:hover{border-color:color-mix(in srgb, var(--ec-brand) 45%, var(--ec-border))}}.notif-inbox-empty,.notif-inbox-empty-text,.notif-inbox-loading{color:var(--ec-text-secondary);font-size:14px}.notif-inbox-empty{flex-direction:column;align-items:flex-start;gap:12px;padding:24px 0;display:flex}.notif-inbox-more{align-self:center;margin-top:8px}.community-browser{margin-top:8px}.community-board-tabs{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:999px;gap:4px;margin-bottom:20px;padding:4px;display:inline-flex}.community-board-tab{cursor:pointer;color:var(--ec-text-secondary);background:0 0;border:none;border-radius:999px;padding:8px 18px;font-size:14px;font-weight:600;transition:background .15s,color .15s}.community-board-tab.on{background:var(--ec-brand);color:#fff}.community-pick-hint{color:var(--ec-text-secondary);margin:0 0 16px}.community-subject-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin:0;padding:0;list-style:none;display:grid}.community-subject-chip{border:1px solid var(--ec-border);background:var(--ec-surface);cursor:pointer;text-align:left;border-radius:14px;align-items:center;gap:12px;width:100%;padding:13px 15px;transition:transform .15s,border-color .15s;display:flex}.community-subject-chip:hover{border-color:var(--sc);transform:translateY(-2px)}@supports (color:color-mix(in lab, red, red)){.community-subject-chip:hover{border-color:color-mix(in srgb, var(--sc) 50%, var(--ec-border))}}.community-subject-glyph,.community-selected-glyph{font-family:var(--font-display);color:#fff;background:linear-gradient(135deg, var(--sc), var(--sc));border-radius:12px;flex-shrink:0;place-items:center;display:grid}@supports (color:color-mix(in lab, red, red)){.community-subject-glyph,.community-selected-glyph{background:linear-gradient(135deg, var(--sc), color-mix(in srgb, var(--sc) 68%, #00000014))}}.community-subject-glyph{width:42px;height:42px;font-size:21px}.community-selected-glyph{width:48px;height:48px;font-size:24px}.community-subject-name{min-width:0;color:var(--ec-text-primary);flex:1;font-size:14.5px;font-weight:600}.community-subject-go{color:var(--ec-text-faint)}.community-back{margin-bottom:14px;display:inline-block}.community-selected-head{align-items:center;gap:12px;margin:6px 0 4px;display:flex}.hub-community{margin-top:32px}.lesson-community{border-top:1px solid var(--ec-border);margin-top:32px;padding-top:24px}.exam-room-home{flex-direction:column;gap:40px;margin-top:8px;display:flex}.exam-room-section h2{font-family:var(--font-display);margin:0 0 12px;font-size:22px}.exam-room-section-sub{color:var(--ec-text-secondary);margin:-6px 0 16px;font-size:14px}.exam-room-feed{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.exam-room-card{border:1px solid var(--ec-border);background:var(--ec-surface);border-radius:12px;padding:14px 16px;text-decoration:none;transition:border-color .15s;display:block}.exam-room-card:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.exam-room-card:hover{border-color:color-mix(in srgb, var(--ec-brand) 40%, var(--ec-border))}}.exam-room-card-title{color:var(--ec-text-primary);margin-bottom:4px;font-weight:600}.exam-room-card-meta{color:var(--ec-text-faint);font-size:12px}.exam-room-anchor{color:var(--ec-brand);letter-spacing:.02em;text-transform:uppercase;margin-bottom:4px;font-size:11px;font-weight:600}.exam-room-leaderboard{flex-direction:column;gap:6px;margin:0;padding:0;list-style:none;display:flex}.exam-room-leader-row{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:10px;align-items:center;gap:12px;padding:10px 12px;display:flex}.exam-room-leader-rank{color:var(--ec-text-faint);min-width:24px;font-weight:700}.exam-room-leader-name{color:var(--ec-text-primary);flex:1;font-weight:600;text-decoration:none}.exam-room-leader-rep{color:var(--ec-brand);font-size:13px;font-weight:600}.exam-room-profile-tabs{border-bottom:1px solid var(--ec-border);gap:4px;margin-bottom:20px;display:flex}.exam-room-profile-tab{cursor:pointer;color:var(--ec-text-secondary);background:0 0;border:none;border-bottom:2px solid #0000;margin-bottom:-1px;padding:10px 16px;font-weight:600}.exam-room-profile-tab.on{color:var(--ec-brand);border-bottom-color:var(--ec-brand)}.exam-room-badges{flex-wrap:wrap;gap:8px;margin:12px 0;display:flex}.exam-room-badge{background:var(--ec-brand);border-radius:999px;padding:4px 10px;font-size:12px;font-weight:600}@supports (color:color-mix(in lab, red, red)){.exam-room-badge{background:color-mix(in srgb, var(--ec-brand) 12%, transparent)}}.exam-room-badge{color:var(--ec-brand);border:1px solid var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.exam-room-badge{border:1px solid color-mix(in srgb, var(--ec-brand) 30%, transparent)}}.exam-room-subject-rep{flex-wrap:wrap;gap:8px;margin:8px 0 16px;display:flex}.exam-room-subject-rep-chip{background:var(--ec-bg-soft);border:1px solid var(--ec-border);border-radius:8px;padding:4px 10px;font-size:12px}.rc-page{width:100%;max-width:none;margin:0;padding:24px clamp(16px,2.5vw,40px) 80px;overflow-x:clip}.rc-page-narrow{max-width:960px;margin:0 auto}.rc-page--hub{padding-top:16px}@media (max-width:720px){.rc-page--hub{padding-top:8px}.rc-page--hub .rc-hub-intro{display:none}}.rc-layout{grid-template-columns:minmax(0,1fr) 300px;align-items:start;gap:clamp(16px,2vw,28px);max-width:1680px;margin:0 auto;display:grid}.rc-layout--hub{grid-template-columns:220px minmax(0,1fr) 300px}@media (max-width:1180px){.rc-layout--hub{grid-template-columns:minmax(0,1fr) 300px}.rc-left-rail{display:none}}@media (max-width:920px){.rc-layout,.rc-layout--hub{grid-template-columns:minmax(0,1fr)}.rc-sidebar{display:none}}.rc-main{flex-direction:column;gap:12px;min-width:0;display:flex}.rc-feed-toolbar{flex-direction:column;gap:10px;min-width:0;display:flex}.rc-feed-toolbar>*{min-width:0;max-width:100%}.rc-hub-intro{min-width:0;max-width:1680px;margin:0 auto 20px}.rc-hub-intro .hub-seo-intro{margin-bottom:0}.hub-seo-intro-details{margin-top:2px}.hub-seo-intro-details-summary{cursor:pointer;color:var(--ec-brand);padding:4px 0;font-size:13px;font-weight:700;list-style:none;display:none}.hub-seo-intro-details-summary::-webkit-details-marker{display:none}@media (max-width:720px){.rc-hub-intro .hub-seo-intro{border-radius:14px;padding:12px 14px}.rc-hub-intro .hub-seo-intro h2{margin-bottom:0;font-size:1.05rem}.hub-seo-intro-details-summary{display:block}.hub-seo-intro-details:not([open])>:not(summary),.hub-seo-intro-details[open] .hub-seo-intro-links a.ec-btn-primary{display:none}}@media (min-width:721px){.hub-seo-intro-details>summary{display:none}}.rc-faq{border-bottom:1px solid var(--ec-border);max-width:1680px;margin:0 auto 28px;padding:20px 0}.rc-faq--footer{border-bottom:none;border-top:1px solid var(--ec-border);background:linear-gradient(180deg, var(--ec-brand) 0%, transparent 48%);margin-top:48px;margin-bottom:0;padding-top:32px}@supports (color:color-mix(in lab, red, red)){.rc-faq--footer{background:linear-gradient(180deg, color-mix(in srgb, var(--ec-brand) 6%, transparent) 0%, transparent 48%)}}.rc-faq--footer{border-radius:16px 16px 0 0}.rc-faq-title{color:var(--ec-text-primary);margin-bottom:14px;font-size:18px;font-weight:800}.rc-faq-list{gap:16px;display:grid}.rc-faq-list dt{color:var(--ec-text-primary);font-size:14px;font-weight:700}.rc-faq-list dd{color:var(--ec-text-secondary);margin-top:6px;font-size:13.5px;line-height:1.55}.rc-boardtabs{flex-wrap:wrap;gap:8px;display:flex}.rc-boardtab{background:var(--ec-surface-raised);border:1px solid var(--ec-border);border-radius:12px;flex-direction:column;align-items:flex-start;gap:1px;min-width:140px;padding:10px 16px;transition:border-color .15s,background .15s;display:flex}.rc-boardtab:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.rc-boardtab:hover{border-color:color-mix(in srgb, var(--ec-brand) 40%, var(--ec-border))}}.rc-boardtab.on{border-color:var(--ec-brand);background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.rc-boardtab.on{background:color-mix(in srgb, var(--ec-brand) 12%, var(--ec-surface-raised))}}.rc-boardtab-label{color:var(--ec-text-primary);font-size:13.5px;font-weight:700}.rc-boardtab-sub{color:var(--ec-text-secondary);font-size:11px}.rc-left-rail{flex-direction:column;gap:14px;display:flex;position:sticky;top:88px}.rc-left-nav{flex-direction:column;gap:2px;display:flex}.rc-left-nav-item{color:var(--ec-text-secondary);border-radius:9px;padding:8px 10px;font-size:13.5px;font-weight:600;transition:background .12s,color .12s;display:block}.rc-left-nav-item:hover{background:var(--ec-surface);color:var(--ec-text-primary)}.rc-left-nav-item.on{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.rc-left-nav-item.on{background:color-mix(in srgb, var(--ec-brand) 14%, transparent)}}.rc-left-nav-item.on{color:var(--ec-brand)}.rc-side-link-block{margin-top:-6px;padding:0 4px;display:block}.rc-create-bar{background:var(--ec-surface-raised);border:1px solid var(--ec-border);border-radius:14px;align-items:center;gap:10px;padding:8px 10px;display:flex}.rc-create-avatar{background:var(--ec-brand);border-radius:50%;flex:none;place-items:center;width:36px;height:36px;display:grid}@supports (color:color-mix(in lab, red, red)){.rc-create-avatar{background:color-mix(in srgb, var(--ec-brand) 16%, transparent)}}.rc-create-avatar{color:var(--ec-brand);font-size:16px}.rc-create-input{background:var(--ec-surface);border:1px solid var(--ec-border);color:var(--ec-text-secondary);border-radius:10px;flex:1;padding:9px 14px;font-size:14px;font-weight:600;transition:border-color .15s,background .15s}.rc-create-input:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.rc-create-input:hover{border-color:color-mix(in srgb, var(--ec-brand) 45%, transparent)}}.rc-create-input:hover{background:var(--ec-surface-raised)}.rc-create-go{background:var(--ec-brand);width:36px;height:36px;color:var(--ec-on-brand-text,#fff);border-radius:10px;flex:none;place-items:center;font-size:20px;font-weight:600;display:grid}.rc-searchbar{background:var(--ec-surface-raised);border:1px solid var(--ec-border);border-radius:999px;align-items:center;gap:8px;padding:8px 16px;display:flex}.rc-searchbar:focus-within{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.rc-searchbar:focus-within{border-color:color-mix(in srgb, var(--ec-brand) 50%, var(--ec-border))}}.rc-searchbar-icon{opacity:.7;font-size:14px}.rc-searchbar-input{color:var(--ec-text-primary);background:0 0;border:none;outline:none;flex:1;font-size:14px;font-weight:500}.rc-searchbar-input::placeholder{color:var(--ec-text-secondary)}.rc-sorttabs{background:var(--ec-surface-raised);border:1px solid var(--ec-border);border-radius:14px;gap:6px;padding:6px;display:flex}.rc-sorttab{color:var(--ec-text-secondary);border-radius:9px;align-items:center;gap:6px;padding:7px 14px;font-size:13px;font-weight:700;transition:background .15s,color .15s;display:inline-flex}.rc-sorttab:hover{background:var(--ec-surface);color:var(--ec-text-primary)}.rc-sorttab.on{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.rc-sorttab.on{background:color-mix(in srgb, var(--ec-brand) 16%, transparent)}}.rc-sorttab.on{color:var(--ec-brand)}.rc-sorttabs-scroll{max-width:100%}.rc-feed{flex-direction:column;gap:12px;display:flex}.rc-card{background:var(--ec-surface-raised);border:1px solid var(--ec-border);border-radius:14px;grid-template-columns:44px minmax(0,1fr);transition:border-color .15s,transform .15s;display:grid;overflow:hidden}.rc-card:hover{border-color:var(--sc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.rc-card:hover{border-color:color-mix(in srgb, var(--sc,var(--ec-brand)) 45%, var(--ec-border))}}.rc-card-vote{background:var(--ec-surface);justify-content:center;align-items:flex-start;padding:12px 0;display:flex}@supports (color:color-mix(in lab, red, red)){.rc-card-vote{background:color-mix(in srgb, var(--ec-surface) 60%, transparent)}}.rc-card-body{min-width:0;padding:12px 16px 10px}.rc-card-meta{color:var(--ec-text-secondary);flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:6px;font-size:12px;font-weight:600;display:flex}.rc-board-badge{letter-spacing:.03em;text-transform:uppercase;border-radius:999px;align-items:center;padding:2px 8px;font-size:10.5px;font-weight:800;display:inline-flex}.rc-board-badge--cambridge{color:#3a5fb8;background:#3a5fb829}.rc-board-badge--ib{color:#6b5b8a;background:#6b5b8a2e}.rc-dot{opacity:.5}.rc-meta-muted{color:var(--ec-text-secondary)}.rc-author{color:var(--ec-text-secondary);font-weight:600}.rc-author:hover{color:var(--ec-brand);text-decoration:underline}.rc-subject-pill{color:var(--ec-text-primary);align-items:center;gap:6px;font-size:12px;font-weight:700;display:inline-flex}.rc-subject-pill:hover{color:var(--sc,var(--ec-brand))}.rc-subject-glyph{background:var(--sc,var(--ec-brand));border-radius:50%;flex:none;place-items:center;width:20px;height:20px;display:grid}@supports (color:color-mix(in lab, red, red)){.rc-subject-glyph{background:color-mix(in srgb, var(--sc,var(--ec-brand)) 20%, transparent)}}.rc-subject-glyph{color:var(--sc,var(--ec-brand));font-size:11px}.rc-card-title-link{display:block}.rc-card-title{color:var(--ec-text-primary);font-size:17px;font-weight:800;line-height:1.32;display:block}.rc-card-title-chips{flex-wrap:wrap;align-items:center;gap:6px 8px;margin-bottom:6px;display:flex}.rc-card-title-text{display:inline}.rc-card-title-link:hover .rc-card-title{color:var(--sc,var(--ec-brand))}.rc-kind,.rc-flair{vertical-align:middle;letter-spacing:.01em;border-radius:999px;margin-right:0;padding:2px 8px;font-size:11px;font-weight:700;display:inline-block}.rc-kind-discussion{color:#a5b4fc;background:#6366f138}.rc-kind-question{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.rc-kind-question{background:color-mix(in srgb, var(--ec-brand) 22%, transparent)}}.rc-kind-question{color:var(--ec-brand)}.rc-kind-resource{color:#fbbf24;background:#f59e0b38}.rc-flair{background:var(--sc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.rc-flair{background:color-mix(in srgb, var(--sc,var(--ec-brand)) 16%, transparent)}}.rc-flair{color:var(--sc,var(--ec-brand))}.rc-card-snippet-link{display:block}.rc-card-snippet{color:var(--ec-text-secondary);-webkit-line-clamp:3;-webkit-box-orient:vertical;margin-top:6px;font-size:13.5px;font-weight:500;line-height:1.5;display:-webkit-box;overflow:hidden}.rc-attach-row{flex-wrap:wrap;gap:8px;margin-top:8px;display:flex}.rc-attach-chip{background:var(--ec-surface);border:1px solid var(--ec-border);color:var(--ec-text-secondary);border-radius:8px;padding:3px 9px;font-size:12px;font-weight:600}.rc-card-actions{align-items:center;gap:14px;margin-top:10px;display:flex}.rc-action{color:var(--ec-text-secondary);border-radius:8px;align-items:center;gap:6px;padding:5px 8px;font-size:12.5px;font-weight:600;display:inline-flex}.rc-action:hover{background:var(--ec-surface);color:var(--ec-text-primary)}.rc-action-static:hover{cursor:default;background:0 0}.rc-votebox{align-items:center;gap:2px;display:flex}.rc-votebox-vertical{flex-direction:column}.rc-votebox-horizontal{flex-direction:row;gap:4px}.rc-vote-btn{width:26px;height:26px;color:var(--ec-text-secondary);border-radius:7px;place-items:center;transition:background .12s,color .12s,transform 80ms;display:grid}.rc-vote-btn:hover{background:var(--ec-surface)}.rc-vote-btn:active{transform:scale(.88)}.rc-vote-btn-locked{opacity:.55}.rc-vote-up-on{color:#ff4500;background:#ff450024}.rc-vote-down-on{color:#6b8cff;background:#6b8cff29}.rc-vote-score{color:var(--ec-text-primary);text-align:center;min-width:22px;font-size:12.5px;font-weight:800}.rc-vote-score.up{color:#ff4500}.rc-vote-score.down{color:#6b8cff}.rc-empty{background:var(--ec-surface-raised);border:1px dashed var(--ec-border);color:var(--ec-text-secondary);text-align:center;border-radius:14px;flex-direction:column;align-items:center;gap:10px;padding:56px 20px;display:flex}.rc-empty-glyph{font-size:40px}.rc-official-badge{letter-spacing:.02em;color:var(--ec-accent);background:var(--ec-accent);align-items:center;gap:3px;margin-left:6px;padding:1px 7px;font-size:.68rem;font-weight:700;line-height:1.5;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.rc-official-badge{background:color-mix(in srgb, var(--ec-accent) 12%, transparent)}}.rc-official-badge{border:1px solid var(--ec-accent)}@supports (color:color-mix(in lab, red, red)){.rc-official-badge{border:1px solid color-mix(in srgb, var(--ec-accent) 35%, transparent)}}.rc-official-badge{vertical-align:middle;border-radius:999px}.rc-empty-sub{max-width:46ch;color:var(--ec-text-secondary);margin:2px 0 4px;font-size:.9rem;line-height:1.5}.rc-starter-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;width:100%;max-width:420px;margin:6px 0 12px;display:grid}.rc-starter-card{text-align:left;background:var(--ec-surface);border:1px solid var(--ec-border);min-height:44px;color:var(--ec-text-primary);border-radius:12px;align-items:center;gap:10px;padding:12px 14px;font-size:.9rem;font-weight:600;text-decoration:none;transition:border-color .15s,transform .15s,background .15s;display:flex}.rc-starter-card:hover{border-color:var(--ec-accent);background:var(--ec-surface-raised);transform:translateY(-1px)}.rc-starter-emoji{font-size:20px;line-height:1}.rc-starter-label{flex:1}@media (max-width:480px){.rc-starter-grid{grid-template-columns:1fr}}.rc-sidebar{flex-direction:column;gap:16px;display:flex;position:sticky;top:88px}.rc-side-card{background:var(--ec-surface-raised);border:1px solid var(--ec-border);border-radius:14px;padding:16px}.rc-side-about{border-top:4px solid var(--sc,var(--ec-brand))}.rc-side-title{color:var(--ec-text-primary);margin-bottom:8px;font-size:16px;font-weight:800}.rc-side-subtitle{text-transform:uppercase;letter-spacing:.05em;color:var(--ec-text-secondary);margin-bottom:12px;font-size:12px;font-weight:700}.rc-side-text{color:var(--ec-text-secondary);margin-bottom:14px;font-size:13px;line-height:1.55}.rc-side-cta{justify-content:center;width:100%;margin-bottom:10px}.rc-side-link{color:var(--ec-brand);font-size:13px;font-weight:600;display:inline-block}.rc-side-link:hover{text-decoration:underline}.rc-side-stats{gap:20px;margin-bottom:14px;display:flex}.rc-side-stats>div{flex-direction:column;display:flex}.rc-side-stats strong{color:var(--ec-text-primary);font-size:18px;font-weight:800}.rc-side-stats span{color:var(--ec-text-secondary);font-size:12px}.rc-side-subjects{flex-direction:column;gap:2px;margin-bottom:12px;display:flex}.rc-side-subject{border-radius:9px;align-items:center;gap:10px;padding:7px 8px;transition:background .12s;display:flex}.rc-side-subject:hover{background:var(--ec-surface)}.rc-side-subject-glyph{background:var(--sc,var(--ec-brand));border-radius:50%;flex:none;place-items:center;width:26px;height:26px;display:grid}@supports (color:color-mix(in lab, red, red)){.rc-side-subject-glyph{background:color-mix(in srgb, var(--sc,var(--ec-brand)) 20%, transparent)}}.rc-side-subject-glyph{color:var(--sc,var(--ec-brand));font-size:13px}.rc-side-subject-name{color:var(--ec-text-primary);text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-size:13px;font-weight:600;overflow:hidden}.rc-side-subject-count{color:var(--ec-text-secondary);font-size:12px}.rc-side-rules{flex-direction:column;gap:9px;margin:0;padding-left:18px;display:flex}.rc-side-rules li{color:var(--ec-text-secondary);font-size:13px;line-height:1.45}.rc-side-leaders{flex-direction:column;gap:8px;display:flex}.rc-side-leaders li{align-items:center;gap:10px;display:flex}.rc-side-rank{width:18px;color:var(--ec-text-secondary);font-size:13px;font-weight:800}.rc-side-leader-name{color:var(--ec-text-primary);flex:1;font-size:13px;font-weight:600}.rc-side-leader-name:hover{color:var(--ec-brand)}.rc-side-leader-rep{color:var(--sc,var(--ec-brand));font-size:12px;font-weight:700}.rc-subject-banner{background:linear-gradient(180deg, var(--sc,var(--ec-brand)), transparent 70%), var(--ec-surface-raised);border-radius:16px;margin-bottom:16px}@supports (color:color-mix(in lab, red, red)){.rc-subject-banner{background:linear-gradient(180deg, color-mix(in srgb, var(--sc,var(--ec-brand)) 22%, transparent), transparent 70%), var(--ec-surface-raised)}}.rc-subject-banner{border:1px solid var(--ec-border);border-top:4px solid var(--sc,var(--ec-brand));padding:22px 20px}.rc-subject-banner-inner{align-items:center;gap:16px;min-width:0;display:flex}.rc-subject-banner-copy{flex:1;min-width:0}.rc-subject-banner-actions{border-top:1px solid var(--ec-border);flex-wrap:wrap;gap:8px 12px;margin-top:14px;padding-top:12px;display:none}@supports (color:color-mix(in lab, red, red)){.rc-subject-banner-actions{border-top:1px solid color-mix(in srgb, var(--ec-border) 80%, transparent)}}.rc-subject-banner-link{color:var(--sc,var(--ec-brand));background:var(--sc,var(--ec-brand));border-radius:999px;padding:6px 10px;font-size:12.5px;font-weight:700;text-decoration:none}@supports (color:color-mix(in lab, red, red)){.rc-subject-banner-link{background:color-mix(in srgb, var(--sc,var(--ec-brand)) 10%, transparent)}}.rc-subject-banner-link{border:1px solid var(--sc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.rc-subject-banner-link{border:1px solid color-mix(in srgb, var(--sc,var(--ec-brand)) 24%, var(--ec-border))}}.rc-subject-banner-link:hover{background:var(--sc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.rc-subject-banner-link:hover{background:color-mix(in srgb, var(--sc,var(--ec-brand)) 16%, transparent)}}.rc-subject-banner-glyph{background:var(--sc,var(--ec-brand));border-radius:50%;flex:none;place-items:center;width:56px;height:56px;display:grid}@supports (color:color-mix(in lab, red, red)){.rc-subject-banner-glyph{background:color-mix(in srgb, var(--sc,var(--ec-brand)) 26%, transparent)}}.rc-subject-banner-glyph{color:var(--sc,var(--ec-brand));font-size:26px}.rc-subject-banner-board{letter-spacing:.06em;text-transform:uppercase;color:var(--sc,var(--ec-brand));margin-bottom:4px;font-size:11px;font-weight:800}.rc-subject-banner-title{color:var(--ec-text-primary);font-size:24px;font-weight:900}.rc-subject-banner-sub{color:var(--ec-text-secondary);margin-top:4px;font-size:14px;font-weight:600}.rc-back{color:var(--ec-text-secondary);margin-bottom:4px;font-size:13px;font-weight:600;display:inline-block}.rc-back:hover{color:var(--ec-brand)}.rc-post{background:var(--ec-surface-raised);border:1px solid var(--ec-border);border-radius:16px;padding:18px}.rc-post-head{grid-template-columns:40px minmax(0,1fr);gap:8px;display:grid}.rc-post-vote{padding-top:4px}.rc-post-headmain{min-width:0}.rc-post-title{color:var(--ec-text-primary);margin-top:8px;font-size:22px;font-weight:800;line-height:1.3;display:block}.rc-post-title-chips{flex-wrap:wrap;align-items:center;gap:6px 8px;margin-bottom:8px;display:flex}.rc-post-title-text{word-break:break-word;display:inline}.rc-status-note{color:var(--ec-chip-warning-text);margin-top:8px;font-size:13px}.rc-post-body{color:var(--ec-text-primary);min-width:0;margin-top:14px;font-size:15px;font-weight:500;line-height:1.6;overflow-x:auto}.rc-page--thread .community-md{-webkit-overflow-scrolling:touch;overflow-x:auto}.rc-page--thread .community-md table{max-width:100%;display:block;overflow-x:auto}.rc-page--thread .community-md pre{max-width:100%;overflow-x:auto}.rc-post-divider{background:var(--ec-border);height:1px;margin:18px 0}.rc-post-attachments{flex-direction:column;gap:12px;margin-top:16px;display:flex}.rc-attach-images{flex-wrap:wrap;gap:10px;display:flex}.rc-attach-image{border:1px solid var(--ec-border);border-radius:12px;max-width:100%;max-height:360px}.rc-attach-files{flex-direction:column;gap:8px;display:flex}.rc-attach-file{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:11px;align-items:center;gap:10px;padding:10px 12px;display:flex}.rc-attach-file:hover{border-color:var(--sc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.rc-attach-file:hover{border-color:color-mix(in srgb, var(--sc,var(--ec-brand)) 50%, var(--ec-border))}}.rc-attach-file-icon{font-size:18px}.rc-attach-file-name{color:var(--ec-text-primary);text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-size:13.5px;font-weight:600;overflow:hidden}.rc-attach-file-size{color:var(--ec-text-secondary);font-size:12px}.rc-attach-file-dl{color:var(--ec-brand);font-size:12px;font-weight:700}.rc-attach-file-expired{color:var(--ec-text-secondary)}.rc-comments{flex-direction:column;gap:14px;display:flex}.rc-comments-count{color:var(--ec-text-secondary);font-size:13px;font-weight:700}.rc-comments-empty{color:var(--ec-text-secondary);padding:12px 0;font-size:14px}.rc-comment-list,.rc-comment-replies{flex-direction:column;gap:14px;margin:0;padding:0;list-style:none;display:flex}.rc-comment-replies{border-left:2px solid var(--ec-border);margin-top:12px;margin-left:8px;padding-left:14px}.rc-comment-row{gap:8px;display:flex}.rc-comment-collapse{width:20px;height:20px;color:var(--ec-text-secondary);background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:6px;flex:none;font-size:13px;font-weight:800}.rc-comment-collapse:hover{color:var(--ec-brand)}.rc-comment-main{flex:1;min-width:0}.rc-comment-meta{color:var(--ec-text-secondary);align-items:center;gap:6px;margin-bottom:4px;font-size:12px;font-weight:600;display:flex}.rc-comment-body{color:var(--ec-text-primary);font-size:14px;font-weight:500;line-height:1.55}.rc-comment-actions{align-items:center;gap:12px;margin-top:4px;display:flex}.rc-comment-reply-btn{color:var(--ec-text-secondary);border-radius:7px;padding:4px 8px;font-size:12.5px;font-weight:700}.rc-comment-reply-btn:hover{background:var(--ec-surface);color:var(--ec-text-primary)}.rc-comment-composer{flex-direction:column;gap:8px;margin-top:10px;display:flex}.rc-comment-composer-top{background:var(--ec-surface-raised);border:1px solid var(--ec-border);border-radius:12px;padding:12px}.rc-comment-composer-actions{justify-content:flex-end;gap:8px;display:flex}.rc-comment-signin{padding:8px 0}.rc-composer{flex-direction:column;gap:16px;display:flex}.rc-composer-h1{color:var(--ec-text-primary);font-size:22px;font-weight:900}.rc-composer-lead{color:var(--ec-text-secondary);margin-top:-8px;font-size:14px;font-weight:600}.rc-kind-tabs{grid-template-columns:repeat(3,1fr);gap:10px;display:grid}@media (max-width:560px){.rc-kind-tabs{grid-template-columns:1fr}}.rc-kind-tab{background:var(--ec-surface-raised);border:1px solid var(--ec-border);text-align:left;border-radius:12px;flex-direction:column;align-items:flex-start;gap:2px;padding:12px 14px;transition:border-color .15s,background .15s;display:flex}.rc-kind-tab:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.rc-kind-tab:hover{border-color:color-mix(in srgb, var(--ec-brand) 40%, var(--ec-border))}}.rc-kind-tab.on{border-color:var(--sc,var(--ec-brand));background:var(--sc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.rc-kind-tab.on{background:color-mix(in srgb, var(--sc,var(--ec-brand)) 12%, var(--ec-surface-raised))}}.rc-kind-tab-label{color:var(--ec-text-primary);font-size:14px;font-weight:800}.rc-kind-tab-hint{color:var(--ec-text-secondary);font-size:12px;font-weight:500}.rc-composer-card{background:var(--ec-surface-raised);border:1px solid var(--ec-border);border-radius:16px;flex-direction:column;gap:16px;padding:18px;display:flex;position:relative}.rc-field{flex-direction:column;gap:6px;display:flex;position:relative}.rc-label{color:var(--ec-text-primary);font-size:13px;font-weight:800}.rc-optional{color:var(--ec-text-secondary);font-weight:600}.rc-hint{color:var(--ec-text-secondary);font-size:12.5px;font-weight:500}.rc-hint-block{background:var(--ec-surface);border:1px dashed var(--ec-border);border-radius:10px;margin:4px 0 0;padding:10px 12px}.rc-input,.rc-textarea{background:var(--ec-surface);border:1px solid var(--ec-border);color:var(--ec-text-primary);border-radius:10px;width:100%;padding:10px 12px;font-size:14px;font-weight:500}.rc-input:focus,.rc-textarea:focus{border-color:var(--sc,var(--ec-brand));outline:none}.rc-subject-select{cursor:pointer;appearance:auto;min-height:44px}.rc-textarea{resize:vertical;min-height:90px;font-family:inherit;line-height:1.5}.rc-counter{color:var(--ec-text-secondary);font-size:11px;position:absolute;top:0;right:0}.rc-error{color:var(--ec-chip-critical-text);font-size:13px;font-weight:600}.rc-subject-options{flex-direction:column;gap:2px;max-height:240px;margin-top:4px;display:flex;overflow:auto}.rc-subject-chips{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:4px;display:grid}@media (min-width:560px){.rc-subject-chips{grid-template-columns:repeat(3,minmax(0,1fr))}}.rc-subject-chip{background:var(--ec-surface);border:1px solid var(--ec-border);text-align:left;border-radius:12px;flex-direction:column;align-items:flex-start;gap:4px;min-height:44px;padding:10px 12px;transition:border-color .15s,background .15s;display:flex}.rc-subject-chip:hover{border-color:var(--sc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.rc-subject-chip:hover{border-color:color-mix(in srgb, var(--sc,var(--ec-brand)) 45%, var(--ec-border))}}.rc-subject-chip:hover{background:var(--ec-surface-raised)}.rc-subject-chip.on{border-color:var(--sc,var(--ec-brand));background:var(--sc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.rc-subject-chip.on{background:color-mix(in srgb, var(--sc,var(--ec-brand)) 12%, var(--ec-surface))}}.rc-subject-chip.on{box-shadow:inset 0 0 0 1px var(--sc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.rc-subject-chip.on{box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--sc,var(--ec-brand)) 28%, transparent)}}.rc-subject-chip-top{align-items:center;gap:8px;width:100%;min-width:0;display:flex}.rc-subject-chip-name{color:var(--ec-text-primary);-webkit-line-clamp:2;-webkit-box-orient:vertical;flex:1;font-size:13px;font-weight:700;line-height:1.25;display:-webkit-box;overflow:hidden}.rc-subject-chip-code{color:var(--ec-text-secondary);font-size:11px;font-weight:600}.rc-subject-browse{border-top:1px solid var(--ec-border);flex-direction:column;gap:6px;margin-top:12px;padding-top:12px;display:flex}.rc-subject-browse-label{color:var(--ec-text-secondary);font-size:12px;font-weight:700}.rc-subject-option{text-align:left;border-radius:9px;align-items:center;gap:10px;padding:8px 10px;transition:background .12s;display:flex}.rc-subject-option:hover{background:var(--ec-surface)}.rc-subject-option-glyph{background:var(--sc,var(--ec-brand));border-radius:50%;flex:none;place-items:center;width:26px;height:26px;display:grid}@supports (color:color-mix(in lab, red, red)){.rc-subject-option-glyph{background:color-mix(in srgb, var(--sc,var(--ec-brand)) 20%, transparent)}}.rc-subject-option-glyph{color:var(--sc,var(--ec-brand));font-size:13px}.rc-subject-option>span:nth-child(2){color:var(--ec-text-primary);flex:1;font-size:14px;font-weight:700}.rc-subject-option-code{color:var(--ec-text-secondary);font-size:12px;font-weight:600}.rc-subject-selected{color:var(--ec-text-primary);align-items:center;gap:10px;font-size:14px;font-weight:700;display:flex}.rc-board-pick{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}@media (max-width:560px){.rc-board-pick{grid-template-columns:1fr}}.rc-board-pick-card{background:var(--ec-surface);border:1px solid var(--ec-border);text-align:left;border-radius:12px;flex-direction:column;align-items:flex-start;gap:4px;padding:14px 16px;transition:border-color .15s,background .15s,transform .12s;display:flex}.rc-board-pick-card:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.rc-board-pick-card:hover{border-color:color-mix(in srgb, var(--ec-brand) 45%, var(--ec-border))}}.rc-board-pick-card:hover{transform:translateY(-1px)}.rc-board-pick-card.on{border-color:var(--ec-brand);background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.rc-board-pick-card.on{background:color-mix(in srgb, var(--ec-brand) 10%, var(--ec-surface-raised))}}.rc-board-pick-glyph{font-size:22px;line-height:1}.rc-board-pick-label{color:var(--ec-text-primary);font-size:15px;font-weight:800}.rc-board-pick-sub{color:var(--ec-text-secondary);font-size:12px;font-weight:600}.rc-board-selected{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:12px;align-items:center;gap:12px;padding:12px 14px;display:flex}.rc-board-selected-glyph{font-size:24px;line-height:1}.rc-board-selected-text{flex-direction:column;gap:2px;min-width:0;display:flex}.rc-board-selected-text strong{color:var(--ec-text-primary);font-size:14px;font-weight:800}.rc-board-selected-text span{color:var(--ec-text-secondary);font-size:12px;font-weight:600}.rc-subject-selected-glyph{background:var(--sc,var(--ec-brand));border-radius:50%;flex:none;place-items:center;width:28px;height:28px;display:grid}@supports (color:color-mix(in lab, red, red)){.rc-subject-selected-glyph{background:color-mix(in srgb, var(--sc,var(--ec-brand)) 22%, transparent)}}.rc-subject-selected-glyph{color:var(--sc,var(--ec-brand));font-size:14px}.rc-subject-change{color:var(--ec-brand);margin-left:auto;font-size:12.5px;font-weight:700}.rc-subject-change:hover{text-decoration:underline}.rc-file-input{color:var(--ec-text-secondary);font-size:13px}.rc-attach-list{flex-direction:column;gap:6px;margin-top:4px;display:flex}.rc-attach-item{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:9px;align-items:center;gap:10px;padding:8px 10px;display:flex}.rc-attach-kind{font-size:16px}.rc-attach-name{color:var(--ec-text-primary);text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-size:13px;overflow:hidden}.rc-attach-remove{color:var(--ec-text-secondary);border-radius:6px;padding:2px 6px;font-size:14px}.rc-attach-remove:hover{color:var(--ec-chip-critical-text);background:var(--ec-surface-raised)}.rc-composer-actions{justify-content:flex-end;gap:10px;display:flex}.rc-dir-head{margin-bottom:20px}.rc-dir-h1{color:var(--ec-text-primary);margin-top:6px;font-size:26px;font-weight:900}.rc-dir-sub{color:var(--ec-text-secondary);font-size:14px}.rc-dir-section{text-transform:uppercase;letter-spacing:.05em;color:var(--ec-text-secondary);margin:24px 0 12px;font-size:13px;font-weight:700}.rc-dir-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;display:grid}.rc-dir-card{background:var(--ec-surface-raised);border:1px solid var(--ec-border);border-left:4px solid var(--sc,var(--ec-brand));border-radius:14px;flex-direction:column;gap:6px;padding:16px;transition:transform .15s,border-color .15s;display:flex}.rc-dir-card:hover{border-color:var(--sc,var(--ec-brand));transform:translateY(-2px)}@supports (color:color-mix(in lab, red, red)){.rc-dir-card:hover{border-color:color-mix(in srgb, var(--sc,var(--ec-brand)) 50%, var(--ec-border))}}.rc-dir-glyph{background:var(--sc,var(--ec-brand));border-radius:50%;place-items:center;width:36px;height:36px;display:grid}@supports (color:color-mix(in lab, red, red)){.rc-dir-glyph{background:color-mix(in srgb, var(--sc,var(--ec-brand)) 20%, transparent)}}.rc-dir-glyph{color:var(--sc,var(--ec-brand));font-size:17px}.rc-dir-name{color:var(--ec-text-primary);font-size:15px;font-weight:700}.rc-dir-meta{color:var(--ec-text-secondary);font-size:12px}.rc-btn{border-radius:999px;justify-content:center;align-items:center;padding:9px 18px;font-size:14px;font-weight:700;transition:opacity .15s,background .15s,transform 80ms;display:inline-flex}.rc-btn:active{transform:scale(.97)}.rc-btn-primary{background:var(--ec-brand);color:var(--ec-on-brand-text,#fff)}.rc-btn-primary:hover{opacity:.9}.rc-btn-primary:disabled{opacity:.5;cursor:not-allowed}.rc-btn-ghost{background:var(--ec-surface);color:var(--ec-text-primary);border:1px solid var(--ec-border)}.rc-btn-ghost:hover{background:var(--ec-surface-raised)}.rc-entry{background:linear-gradient(135deg, var(--sc,var(--ec-brand)), transparent 60%), var(--ec-surface-raised);border-radius:16px;flex-direction:column;gap:14px;padding:22px;display:flex}@supports (color:color-mix(in lab, red, red)){.rc-entry{background:linear-gradient(135deg, color-mix(in srgb, var(--sc,var(--ec-brand)) 14%, transparent), transparent 60%), var(--ec-surface-raised)}}.rc-entry{border:1px solid var(--ec-border);border-top:4px solid var(--sc,var(--ec-brand))}.rc-entry-head{align-items:center;gap:12px;display:flex}.rc-entry-glyph{background:var(--sc,var(--ec-brand));border-radius:12px;flex:none;place-items:center;width:44px;height:44px;display:grid}@supports (color:color-mix(in lab, red, red)){.rc-entry-glyph{background:color-mix(in srgb, var(--sc,var(--ec-brand)) 22%, transparent)}}.rc-entry-glyph{color:var(--sc,var(--ec-brand));font-size:22px}.rc-entry-title{color:var(--ec-text-primary);font-size:18px;font-weight:800}.rc-entry-sub{color:var(--ec-text-secondary);font-size:13px}.rc-entry-posts{flex-direction:column;gap:8px;display:flex}.rc-entry-post{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:10px;align-items:center;gap:10px;padding:10px 12px;display:flex}.rc-entry-post:hover{border-color:var(--sc,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){.rc-entry-post:hover{border-color:color-mix(in srgb, var(--sc,var(--ec-brand)) 45%, var(--ec-border))}}.rc-entry-post-score{color:var(--sc,var(--ec-brand));text-align:center;min-width:28px;font-size:12px;font-weight:800}.rc-entry-post-title{color:var(--ec-text-primary);text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-size:13.5px;font-weight:600;overflow:hidden}.rc-entry-post-comments{color:var(--ec-text-secondary);font-size:12px}.rc-entry-actions{flex-wrap:wrap;gap:10px;display:flex}@media (max-width:900px){.rc-page{padding:12px 14px calc(72px + env(safe-area-inset-bottom,0px));scroll-padding-top:var(--ec-nav-height,calc(64px + env(safe-area-inset-top,0px)));overflow-x:hidden}.rc-page--hub{padding-top:8px}.rc-page--composer.rc-page-narrow{padding-top:12px}.rc-main{gap:14px;min-width:0}.rc-page-narrow{padding-left:14px;padding-right:14px}.rc-subject-banner{border-radius:14px;margin-left:0;margin-right:0;padding:18px 16px}.rc-subject-banner-title{word-break:break-word;font-size:clamp(20px,5.5vw,24px)}.rc-boardtabs{-webkit-overflow-scrolling:touch;scrollbar-width:none;flex-wrap:nowrap;max-width:100%;margin:0;padding-bottom:4px;overflow-x:auto}.rc-boardtabs::-webkit-scrollbar{display:none}.rc-boardtab{flex:none;min-width:118px;padding:9px 12px}.rc-sorttabs-scroll{-webkit-overflow-scrolling:touch;scrollbar-width:none;min-width:0;max-width:100%;margin:0;overflow-x:auto}.rc-sorttabs-scroll::-webkit-scrollbar{display:none}.rc-sorttabs{flex-wrap:nowrap;width:max-content;max-width:none;display:inline-flex;overflow:visible}.rc-sorttab{white-space:nowrap;flex:none;padding:7px 12px}.rc-create-bar{gap:8px;padding:8px}.rc-create-input{align-items:center;min-height:44px;padding:10px 12px;font-size:13px;display:flex}.rc-create-go{flex:none;width:44px;height:44px}.rc-card{grid-template-columns:40px minmax(0,1fr)}.rc-card-body{padding:10px 12px}.rc-card-title{font-size:16px}.rc-post-title{word-break:break-word;font-size:clamp(18px,5vw,22px)}.rc-post-head{grid-template-columns:36px minmax(0,1fr)}.rc-vote-btn{min-width:var(--ec-touch-min,44px);min-height:var(--ec-touch-min,44px)}.rc-composer-card{padding:16px 14px}.rc-composer-actions{flex-direction:column;align-items:stretch}.rc-composer-actions .rc-btn{justify-content:center;width:100%;min-height:44px}.rc-subject-selected,.rc-board-selected{flex-wrap:wrap;align-items:flex-start}.rc-subject-change{text-align:left;width:100%;min-height:44px;margin-left:0;padding-top:4px}.rc-comment-composer-actions{flex-direction:column;align-items:stretch}.rc-comment-composer-actions .rc-btn{justify-content:center;width:100%;min-height:44px}.rc-entry-actions{flex-direction:column;align-items:stretch}.rc-entry-actions .rc-btn{justify-content:center;width:100%;min-height:44px}.rc-entry-post-title{white-space:normal;-webkit-line-clamp:2;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.rc-feed-toolbar{gap:12px}.rc-boardtab-label,.rc-boardtab-sub{text-overflow:ellipsis;white-space:nowrap;max-width:100%;overflow:hidden}.rc-subject-banner-actions{display:flex}.rc-page--subject .rc-subject-banner{margin-bottom:12px}.rc-page--thread .rc-post{border-radius:14px;padding:14px}.rc-page--thread .rc-post-head{grid-template-columns:minmax(0,1fr);gap:0}.rc-page--thread .rc-post-vote{border-bottom:1px solid var(--ec-border);margin-bottom:12px;padding:0 0 12px}.rc-page--thread .rc-post-vote .rc-votebox-vertical{flex-direction:row;justify-content:flex-start;gap:6px}.rc-composer-h1{font-size:clamp(20px,5.5vw,22px)}.rc-composer-lead{font-size:13px;line-height:1.45}.rc-dir-h1{word-break:break-word;font-size:clamp(22px,6vw,26px)}.rc-field .rc-counter{align-self:flex-end;margin-top:2px;position:static}.rc-board-selected{flex-direction:column;align-items:stretch}.rc-board-selected .rc-subject-change{text-align:left;width:100%;min-height:44px;margin-left:0}.rc-comment-meta{flex-wrap:wrap;gap:4px 8px;line-height:1.35}.rc-comment-actions{flex-wrap:wrap;gap:8px 12px}.rc-attach-image{max-height:min(280px,55vw)}}@media (max-width:520px){.rc-page{padding-left:12px;padding-right:12px}.rc-subject-banner{padding:16px 14px}.rc-subject-banner-inner{flex-direction:column;align-items:flex-start;gap:10px}.rc-boardtab{min-width:104px}.rc-card-meta{align-items:flex-start;gap:4px 8px;font-size:11px;line-height:1.35}.rc-subject-pill{min-width:0;max-width:100%}.rc-subject-pill span:last-child{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.rc-dot{display:none}.rc-card-meta .rc-dot+.rc-meta-muted:before{content:"· ";opacity:.5}.rc-card-actions{flex-wrap:wrap;gap:8px 12px}.rc-comment-replies{margin-left:0;padding-left:10px}.rc-dir-grid{grid-template-columns:1fr}.rc-searchbar{border-radius:14px;padding:8px 12px}.rc-hub-intro{padding:0}.rc-faq--footer{margin-top:32px;padding-top:24px}.rc-create-avatar{display:none}.rc-subject-banner-glyph{width:44px;height:44px;font-size:20px}.rc-subject-banner-title{font-size:clamp(18px,5vw,22px)}.rc-subject-banner-sub{font-size:13px;line-height:1.4}.rc-card-vote{padding:10px 0}.rc-card-vote .rc-vote-btn{width:32px;height:32px}.rc-card-vote .rc-vote-btn svg{width:18px;height:18px}.hub-seo-intro-links{flex-direction:column;align-items:stretch}.hub-seo-intro-links a{text-align:center;justify-content:center}.rc-post-title{font-size:clamp(17px,4.8vw,20px)}.rc-comment-composer-top{padding:10px}.rc-back{margin-bottom:8px;font-size:12.5px}.notif-inbox-head{flex-direction:column;align-items:stretch}.notif-inbox-actions{width:100%}.notif-inbox-actions .ec-btn-ghost{flex:1;justify-content:center;min-height:44px}.rc-attach-file{flex-wrap:wrap;gap:6px 10px}.rc-attach-file-name{white-space:normal;word-break:break-word;flex:100%}.rc-attach-file-dl{margin-left:auto}.rc-attach-image-link{max-width:100%;display:block}.rc-entry-post{flex-wrap:wrap;gap:8px}.rc-entry-post-score{min-width:24px}.rc-entry-post-comments{margin-left:auto}.rc-entry-head{align-items:flex-start}}.ms-course-hero{padding-top:56px;padding-bottom:88px}.ms-course-catalog{grid-template-columns:repeat(2,1fr);gap:18px;margin-top:40px;display:grid}.ms-course-catalog .ms-scard2 .ms-tile{height:110px}.ms-course-catalog .ms-sname{font-size:26px}.ms-course-catalog .ms-body-2{margin:8px 0 0;font-size:13.5px}.ms-prog-track{background:var(--ec-bg-soft);border-radius:3px;height:6px;margin-top:18px;overflow:hidden}.ms-prog-fill{background:var(--sc,var(--ec-brand));border-radius:3px;height:100%;transition:width .3s}.ms-simpler{cursor:pointer;-webkit-user-select:none;user-select:none;align-items:center;gap:8px;margin-left:auto;display:inline-flex}.ms-simpler-switch{background:var(--ec-border);cursor:pointer;border:none;border-radius:99px;width:38px;height:22px;padding:0;transition:background .15s;position:relative}.ms-simpler-switch.on{background:var(--ec-brand)}.ms-simpler-switch span{background:var(--ec-surface);border-radius:50%;width:16px;height:16px;transition:left .15s;position:absolute;top:3px;left:3px;box-shadow:0 1px 3px #00000040}.ms-simpler-switch.on span{left:19px}.ms-lesson-body{max-width:760px}.ms-lesson-chip-row{flex-wrap:wrap;align-items:center;gap:12px;margin:14px 0 26px;display:flex}.ms-fc-row{grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px;display:grid}.ms-fc{border:1px solid var(--ec-border);background:var(--ec-paper);cursor:pointer;border-radius:14px;flex-direction:column;min-height:148px;padding:16px 18px;transition:border-color .15s,transform .15s;display:flex}.ms-fc:hover{border-color:var(--ec-brand);transform:translateY(-2px)}.ms-fc.flipped{background:var(--ec-brand-muted);border-color:var(--ec-brand-border,var(--ec-brand))}.ms-fc .fc-side{font-family:var(--font-mono);letter-spacing:.16em;color:var(--ec-text-faint);font-size:10px}.ms-fc.flipped .fc-side{color:var(--ec-brand)}.ms-fc .fc-q{font-family:var(--font-display);color:var(--ec-text-primary);margin-top:8px;font-size:17.5px;line-height:1.35}.ms-fc .fc-a{font-family:var(--font-handwritten,"Caveat", cursive);color:var(--ec-brand);margin-top:8px;font-size:22px;line-height:1.25}.ms-fc .fc-hint{color:var(--ec-text-faint);margin-top:auto;padding-top:12px;font-size:11.5px}html[data-ec-theme=zen] .course-studio,html[data-ec-theme=late-night] .course-studio{--course-accent:var(--ec-brand);--course-formula-green:var(--ec-brand);--course-formula-green-soft:var(--ec-brand-muted);--course-accent-muted:var(--ec-brand-muted);--course-surface-deep:var(--ec-bg-soft);--course-surface-nav:var(--ec-surface);--course-surface-main:var(--ec-canvas);--course-surface-card:var(--ec-surface);--course-surface-elevated:var(--ec-surface);--course-border:var(--ec-border);--course-border-strong:var(--ec-border-strong,var(--ec-border));--course-text-muted:var(--ec-text-secondary);--course-text-faint:var(--ec-text-faint);--course-glow:var(--ec-shadow-card,0 1px 3px #00000014)}.course-studio-page{background:var(--ec-canvas)}.course-studio-grid{max-width:var(--ec-maxw,1200px);gap:36px;margin:0 auto;padding:40px 32px 64px}@media (min-width:1024px){.course-studio-grid{grid-template-columns:280px minmax(0,1fr);align-items:start}}.course-studio-nav{background:var(--ec-surface);border:1px solid var(--ec-border);box-shadow:var(--ec-shadow-card,0 1px 3px #0000000f);border-radius:16px;max-height:calc(100vh - 130px);padding:18px 0}@media (min-width:1024px){.course-studio-nav{border-right:none;top:96px}}.course-studio-subject-card{padding:0 18px 10px}.course-studio-subject-icon{display:none}.course-studio-subject-name{font-family:var(--font-display);font-size:19px;font-weight:600}.course-studio-dashboard-btn{font-family:var(--font-sans);color:var(--ec-brand);background:0 0;border:none;border-radius:0;justify-content:flex-start;margin:0 18px 8px;padding:0;font-size:14px;font-weight:600}.course-studio-dashboard-btn:hover{background:0 0;text-decoration:underline}.course-studio-paper-label{font-family:var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ec-text-faint);margin:0;padding:14px 18px 6px;font-size:10.5px}.course-studio-topic-link{color:var(--ec-text-secondary);border-left:2px solid #0000;border-radius:0;gap:0;padding:9px 18px;font-size:14px}.course-studio-topic-link:hover{color:var(--ec-brand);background:0 0}.course-studio-topic-link.is-active{color:var(--ec-brand);border-left-color:var(--ec-brand);background:var(--ec-brand-muted);font-weight:600}.course-studio-topic-indicator{display:none}.course-studio-topic-meta{font-family:var(--font-mono);font-size:11px}.course-studio-main{background:0 0}.course-studio-topbar{border-bottom:1px solid var(--ec-border);background:0 0;margin-bottom:8px;padding-bottom:12px}.course-studio-mark-cta{background:var(--ec-brand);color:var(--ec-on-brand-text,#fff);border:none;border-radius:999px;font-weight:600}.course-studio-hero .course-studio-title,.course-studio-content .course-studio-title{font-family:var(--font-display);letter-spacing:-.02em;font-size:clamp(30px,4vw,44px);font-weight:500;line-height:1.1}.course-studio-label,.course-studio-content .ms-overline{font-family:var(--font-mono);letter-spacing:.2em;text-transform:uppercase;color:var(--ec-text-faint);font-size:12px}.course-studio-lead,.course-studio-prose{color:var(--ec-text-secondary);font-size:16.5px;line-height:1.65}.course-callout--exam-tip,.course-exam-tip-box{border-left:3px solid var(--ec-brand);background:var(--ec-brand-muted);border-radius:0 10px 10px 0;max-width:760px;margin:22px 0;padding:16px 20px}.course-callout--exam-tip .course-callout-label,.course-exam-tip-box .course-exam-tip-label{font-family:var(--font-mono);letter-spacing:.14em;color:var(--ec-brand);font-size:11px}.course-rich-text .katex-display,.course-formula-stage,.course-lesson-formula{font-family:var(--font-mono);background:var(--ec-paper);border:1px solid var(--ec-border);border-radius:10px;margin:18px 0;padding:16px 20px;font-size:15px}.course-lesson-experience[data-explain-simpler=false] #simple-explanation,.course-lesson-experience[data-explain-simpler=true] #full-notes,.course-lesson-experience[data-explain-simpler=true] #learn-steps,.course-lesson-experience[data-explain-simpler=true] #key-formulas{display:none}@media (max-width:900px){.ms-course-catalog,.ms-fc-row{grid-template-columns:1fr}.course-studio-grid{padding:24px 18px 48px}.course-studio-nav{max-height:none;position:static}}@media (prefers-reduced-motion:reduce){.ms-prog-fill,.ms-fc,.ms-simpler-switch span{transition:none}}.ms-dash-page{padding-top:56px;padding-bottom:64px}.ms-dash-grid{grid-template-columns:repeat(12,1fr);gap:18px;margin-top:36px;display:grid}.ms-dash-card{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-lg,16px);box-shadow:var(--ec-shadow-card,0 1px 3px #0000000f);padding:22px 24px}.ms-new-user-home .ms-new-user-hero{box-shadow:var(--ec-shadow-card,0 1px 3px #0000000f)}.ms-big-grade{font-family:var(--font-display);color:var(--ec-brand);font-size:clamp(64px,12vw,84px);font-style:italic;line-height:1}.ms-bar-row{grid-template-columns:130px 1fr 44px;align-items:center;gap:12px;padding:7px 0;font-size:13.5px;display:grid}.ms-bar-track{background:var(--ec-bg-soft);border-radius:4px;height:8px;overflow:hidden}.ms-bar-fill{border-radius:4px;height:100%}.ms-fix-item{border-bottom:1px solid var(--ec-border);align-items:baseline;gap:14px;padding:12px 0;font-size:14.5px;display:flex}.ms-fix-item:last-child{border-bottom:none}.ms-heat{grid-template-columns:repeat(10,1fr);gap:5px;margin-top:14px;display:grid}.ms-heat div{aspect-ratio:1;border-radius:4px}.ms-ob-shell{max-width:660px;padding:calc(64px + env(safe-area-inset-top,0px)) 24px 48px;padding-bottom:calc(48px + env(safe-area-inset-bottom,0px));text-align:center;min-height:100dvh;margin:0 auto}.ms-ob-shell .ms-h2,.ms-ob-shell .ms-h2+.ms-lead,.ms-ob-shell>.ms-ob-dots+div .ms-lead:first-of-type{margin-left:auto;margin-right:auto}.ms-ob-step{width:100%;min-width:0}.ms-ob-progress{margin-bottom:34px}.ms-ob-progress-label{font-family:var(--font-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ec-text-secondary);justify-content:center;align-items:baseline;gap:8px;margin-bottom:10px;font-size:11px;font-weight:700;display:flex}.ms-ob-progress-label b{color:var(--ec-brand);font-weight:700}.ms-ob-dots{justify-content:center;gap:8px;padding:0;list-style:none;display:flex}.ms-ob-dots li{display:contents}.ms-ob-dots span{background:var(--ec-border);border-radius:3px;width:40px;height:5px;transition:background .3s,box-shadow .3s}.ms-ob-dots span.on{background:var(--ec-brand)}.ms-ob-dots span.now{background:var(--ec-brand);box-shadow:0 0 10px var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ms-ob-dots span.now{box-shadow:0 0 10px color-mix(in srgb, var(--ec-brand) 55%, transparent)}}.ms-ob-choices{text-align:left;grid-template-columns:1fr 1fr;gap:14px;margin:36px 0 0;display:grid}.ms-ob-choice{cursor:pointer;border:1.5px solid var(--ec-border);background:var(--ec-surface);font-family:var(--font-sans);text-align:left;border-radius:16px;padding:20px 48px 20px 22px;transition:border-color .15s,background .15s,box-shadow .15s,transform .15s;position:relative}.ms-ob-choice:hover:not(:disabled){border-color:var(--ec-brand-border,var(--ec-brand));box-shadow:var(--ec-shadow-card,0 4px 14px #12161e12);transform:translateY(-1px)}.ms-ob-choice.on{border-color:var(--ec-brand);background:radial-gradient(120% 120% at 100% 0%, var(--ec-brand), transparent 55%), var(--ec-brand-muted)}@supports (color:color-mix(in lab, red, red)){.ms-ob-choice.on{background:radial-gradient(120% 120% at 100% 0%, color-mix(in srgb, var(--ec-brand) 10%, transparent), transparent 55%), var(--ec-brand-muted)}}.ms-ob-choice.on{box-shadow:0 0 0 1px var(--ec-brand), var(--ec-shadow-card,0 4px 14px #12161e12)}.ms-ob-choice:disabled{opacity:.55;cursor:default}.ms-ob-choice .ms-ob-tick{border:1.5px solid var(--ec-border);color:#0000;background:0 0;border-radius:999px;place-items:center;width:22px;height:22px;transition:border-color .15s,background .15s,color .15s,transform .15s;display:grid;position:absolute;top:18px;right:16px}.ms-ob-choice.on .ms-ob-tick{border-color:var(--ec-brand);background:var(--ec-brand);color:var(--ec-on-brand-text,#fff);transform:scale(1.05)}.ms-ob-choice b{font-family:var(--font-display);color:var(--ec-text-primary);margin-bottom:4px;font-size:19px;font-weight:600;display:block}.ms-ob-choice span{color:var(--ec-text-secondary);font-size:13.5px}.ms-ob-subjects{flex-wrap:wrap;justify-content:center;gap:9px;margin-top:36px;display:flex}.ms-ob-chip{font-family:var(--font-mono);border:1.5px solid var(--ec-border);background:var(--ec-surface);cursor:pointer;color:var(--ec-text-secondary);border-radius:999px;align-items:center;gap:6px;padding:10px 17px;font-size:13px;transition:border-color .15s,color .15s,background .15s,box-shadow .15s;display:inline-flex}.ms-ob-chip:hover:not(:disabled){border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ms-ob-chip:hover:not(:disabled){border-color:color-mix(in srgb, var(--ec-brand) 55%, var(--ec-border))}}.ms-ob-chip:hover:not(:disabled){color:var(--ec-text-primary)}.ms-ob-chip.on{border-color:var(--ec-brand);color:var(--ec-brand);background:var(--ec-brand-muted);box-shadow:0 0 0 1px var(--ec-brand);font-weight:600}@supports (color:color-mix(in lab, red, red)){.ms-ob-chip.on{box-shadow:0 0 0 1px color-mix(in srgb, var(--ec-brand) 45%, transparent)}}.ms-ob-chip .ms-ob-chip-check{flex-shrink:0;width:13px;height:13px;display:inline-flex}.ms-ob-hero{width:min(320px,84vw);margin:0 auto;position:relative}.ms-ob-hero-glow{background:var(--ec-brand);border-radius:999px;position:absolute;inset:-18%}@supports (color:color-mix(in lab, red, red)){.ms-ob-hero-glow{background:color-mix(in srgb, var(--ec-brand) 20%, transparent)}}.ms-ob-hero-glow{filter:blur(46px);pointer-events:none}.ms-ob-hero-paper{border:1px solid var(--ec-brand);position:relative}@supports (color:color-mix(in lab, red, red)){.ms-ob-hero-paper{border:1px solid color-mix(in srgb, var(--ec-brand) 26%, var(--ec-border))}}.ms-ob-hero-paper{background:var(--ec-surface);box-shadow:inset 0 1px 0 #fff6, 0 18px 44px -20px var(--ec-brand);border-radius:18px}@supports (color:color-mix(in lab, red, red)){.ms-ob-hero-paper{box-shadow:inset 0 1px 0 #fff6, 0 18px 44px -20px color-mix(in srgb, var(--ec-brand) 30%, #12161e59)}}.ms-ob-hero-paper{text-align:left;padding:18px 20px 16px;transform:rotate(-1.2deg)}.ms-ob-hero-row{align-items:center;gap:10px;padding:7px 0;display:flex}.ms-ob-hero-row+.ms-ob-hero-row{border-top:1px dashed var(--ec-border)}@supports (color:color-mix(in lab, red, red)){.ms-ob-hero-row+.ms-ob-hero-row{border-top:1px dashed color-mix(in srgb, var(--ec-border) 80%, transparent)}}.ms-ob-hero-line{background:var(--ec-text-secondary);border-radius:4px;height:7px}@supports (color:color-mix(in lab, red, red)){.ms-ob-hero-line{background:color-mix(in srgb, var(--ec-text-secondary) 22%, transparent)}}.ms-ob-hero-line{flex:1}.ms-ob-hero-line.short{flex:0 0 58%}.ms-ob-hero-badge{font-family:var(--font-mono);letter-spacing:.06em;border-radius:999px;flex-shrink:0;align-items:center;gap:5px;padding:3px 9px;font-size:10.5px;font-weight:700;display:inline-flex}.ms-ob-hero-badge.good{color:var(--ec-chip-success-text);background:var(--ec-chip-success-bg)}.ms-ob-hero-badge.part{color:var(--ec-chip-warning-text);background:var(--ec-chip-warning-bg)}.ms-ob-hero-score{font-family:var(--font-handwritten,"Caveat", cursive);color:var(--ec-on-brand-text,#fff);background:var(--ec-brand);box-shadow:0 8px 20px -8px var(--ec-brand);border-radius:999px;padding:7px 13px;font-size:21px;line-height:1;position:absolute;top:-16px;right:-14px;transform:rotate(3deg)}@supports (color:color-mix(in lab, red, red)){.ms-ob-hero-score{box-shadow:0 8px 20px -8px color-mix(in srgb, var(--ec-brand) 70%, transparent)}}.ms-ob-nav{flex-wrap:wrap;justify-content:center;align-items:center;gap:16px;margin-top:44px;display:flex}.ms-price-page{max-width:1080px;padding-top:56px;padding-bottom:88px}.ms-price-grid{grid-template-columns:repeat(4,1fr);align-items:stretch;gap:20px;margin-top:48px;display:grid}.ms-price-card{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-lg,16px);box-shadow:var(--ec-shadow-card,0 1px 3px #0000000f);flex-direction:column;padding:32px 30px;display:flex;position:relative}.ms-price-card.hot{border:2px solid var(--ec-brand);box-shadow:var(--ec-card-hover-shadow,var(--ec-shadow-pop,0 8px 24px #0000001f))}.ms-hot-badge{background:var(--ec-brand);color:var(--ec-on-brand-text,#fff);font-family:var(--font-handwritten,"Caveat", cursive);white-space:nowrap;border-radius:999px;padding:3px 16px;font-size:18px;position:absolute;top:-14px;left:50%;transform:translate(-50%)rotate(-2deg)}.ms-price-amount{font-family:var(--font-display);letter-spacing:-.02em;color:var(--ec-text-primary);margin:14px 0 2px;font-size:52px;font-weight:500}.ms-price-amount small{color:var(--ec-text-faint);font-size:17px;font-family:var(--font-sans)}.ms-price-feats{flex-direction:column;flex:1;gap:11px;margin:24px 0 30px;display:flex}.ms-price-feats div{color:var(--ec-text-secondary);align-items:baseline;gap:10px;font-size:14.5px;display:flex}.ms-price-feats .tick{color:var(--ec-brand);flex-shrink:0;font-weight:700}.ms-acct-page{max-width:980px;padding-top:56px;padding-bottom:64px}.ms-acct-grid{grid-template-columns:1fr 1fr;gap:18px;margin-top:36px;display:grid}.ms-acct-card{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-lg,16px);box-shadow:var(--ec-shadow-card,0 1px 3px #0000000f);padding:22px 24px}.ms-acct-chiprow{flex-wrap:wrap;gap:9px;margin-top:14px;display:flex}.ms-acct-chiprow .ms-ob-chip{padding:7px 13px;font-size:12px}.ms-usage-row{color:var(--ec-text-secondary);justify-content:space-between;align-items:baseline;font-size:14px;display:flex}.ms-progress-tabs{background:var(--ec-bg-soft);border:1px solid var(--ec-border);scrollbar-width:none;border-radius:999px;gap:4px;max-width:100%;padding:4px;display:inline-flex;overflow-x:auto}.ms-progress-tabs::-webkit-scrollbar{display:none}.ms-progress-tab{font-family:var(--font-sans);color:var(--ec-text-secondary);cursor:pointer;white-space:nowrap;background:0 0;border:none;border-radius:999px;align-items:center;gap:8px;padding:9px 16px;font-size:14px;font-weight:600;transition:background .15s,color .15s,box-shadow .15s;display:inline-flex}.ms-progress-tab.on{background:var(--ec-surface);color:var(--ec-brand);box-shadow:var(--ec-shadow-card,0 1px 3px #00000014)}.ms-progress-tab:not(.on):hover{color:var(--ec-text-primary)}.ms-progress-hint{border:1.5px dashed var(--ec-border);border-radius:var(--ec-radius-lg,16px);background:var(--ec-surface);color:var(--ec-text-secondary);padding:20px;font-size:14px;line-height:1.55}.ms-progress-empty{text-align:center;padding:56px 32px}.ms-progress-empty-icon{background:var(--ec-brand-muted);border:1.5px dashed var(--ec-brand);border-radius:18px;place-items:center;width:64px;height:64px;display:inline-grid}@supports (color:color-mix(in lab, red, red)){.ms-progress-empty-icon{border:1.5px dashed color-mix(in srgb, var(--ec-brand) 35%, transparent)}}.ms-progress-empty-icon{margin-bottom:20px;font-size:28px}.ms-progress-row{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-lg,16px);box-shadow:var(--ec-shadow-card,0 1px 3px #0000000f);padding:20px;transition:border-color .15s,box-shadow .15s,transform .15s;display:block}.ms-progress-row:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ms-progress-row:hover{border-color:color-mix(in srgb, var(--ec-brand) 30%, transparent)}}.ms-progress-row:hover{box-shadow:var(--ec-card-hover-shadow,var(--ec-shadow-pop,0 8px 24px #0000001a))}@media (max-width:900px){.ms-dash-grid>div{grid-column:span 12!important}.ms-price-grid,.ms-acct-grid,.ms-ob-choices{grid-template-columns:1fr}.ms-ob-shell{padding:calc(40px + env(safe-area-inset-top,0px)) 20px 32px;padding-bottom:calc(32px + env(safe-area-inset-bottom,0px))}.ms-ob-dots{gap:6px;margin-bottom:28px}.ms-ob-dots span{width:28px}.ms-ob-choices{gap:12px;margin-top:28px}.ms-ob-choice{padding:16px 18px}.ms-ob-subjects{gap:8px;margin-top:28px}.ms-ob-chip{padding:9px 14px;font-size:12.5px}.ms-ob-nav{flex-direction:column;gap:12px;width:100%;margin-top:32px}.ms-ob-nav .ec-btn-primary,.ms-ob-nav .ec-btn-ghost,.ms-ob-nav .ec-btn-underline,.ms-ob-nav button{justify-content:center;width:100%;max-width:none}.ms-ob-shell .ms-lead{padding-inline:4px;font-size:16px;line-height:1.6}.ms-bar-row{grid-template-columns:1fr;gap:6px}}@media (max-width:1100px) and (min-width:901px){.ms-price-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:520px){.ms-ob-shell{padding:calc(28px + env(safe-area-inset-top,0px)) 16px 24px;padding-bottom:calc(24px + env(safe-area-inset-bottom,0px))}.ms-ob-shell .ms-h2{font-size:clamp(26px,7vw,34px)}.ms-ob-choice b{font-size:17px}}@media (prefers-reduced-motion:reduce){.ms-ob-choice,.ms-ob-chip{transition:none}}.ms-content-hero{padding-top:56px;padding-bottom:40px}.ms-sec-tight{padding-top:48px}.ms-guide-feature{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-lg,16px);box-shadow:var(--ec-shadow-card,0 1px 3px #0000000f);grid-template-columns:1.1fr .9fr;align-items:center;gap:48px;margin-top:40px;padding:40px 44px;display:grid}.ms-guide-grid{grid-template-columns:repeat(3,1fr);gap:16px;margin-top:28px;display:grid}.ms-guide-card{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-lg,16px);box-shadow:var(--ec-shadow-card,0 1px 3px #0000000f);color:inherit;flex-direction:column;gap:10px;padding:22px 24px;text-decoration:none;transition:transform .15s,box-shadow .15s;display:flex}.ms-guide-card:hover{box-shadow:var(--ec-shadow-pop,0 8px 24px #0000001f);transform:translateY(-3px)}.ms-guide-card .ms-gt{font-family:var(--font-display);color:var(--ec-text-primary);margin:0;font-size:20px;font-weight:500;line-height:1.25}.ms-guide-card .ms-gmeta{align-items:center;gap:8px;margin-top:auto;display:flex}.ms-hub-card{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-lg,16px);box-shadow:var(--ec-shadow-card,0 1px 3px #0000000f);flex-direction:column;height:100%;padding:24px 26px;display:flex}.ms-blog-stats{grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:40px;padding:0;list-style:none;display:grid}.ms-blog-stat{text-align:center;background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-lg,16px);padding:20px 22px}.ms-blog-stat__value{font-family:var(--font-display);color:var(--ec-brand);font-size:36px;font-weight:500;line-height:1;display:block}.ms-blog-stat__label{color:var(--ec-text-secondary);margin-top:8px;font-size:13px;display:block}.ms-blog-cta{text-align:center;background:linear-gradient(145deg, var(--ec-accent-warm) 0%, var(--ec-surface) 55%, var(--ec-brand) 100%);margin-top:40px;padding:32px 28px}@supports (color:color-mix(in lab, red, red)){.ms-blog-cta{background:linear-gradient(145deg, color-mix(in srgb, var(--ec-accent-warm) 8%, var(--ec-surface)) 0%, var(--ec-surface) 55%, color-mix(in srgb, var(--ec-brand) 6%, var(--ec-surface)) 100%)}}.ms-blog-cta{border:1px solid var(--ec-accent-warm)}@supports (color:color-mix(in lab, red, red)){.ms-blog-cta{border:1px solid color-mix(in srgb, var(--ec-accent-warm) 28%, var(--ec-border))}}.ms-blog-cta{border-radius:var(--ec-radius-lg,16px);box-shadow:var(--ec-card-shadow)}.ms-blog-cta__perks{flex-wrap:wrap;justify-content:center;gap:8px;max-width:520px;margin:20px auto 0;padding:0;list-style:none;display:flex}.ms-blog-cta__perks li{background:var(--ec-surface);border-radius:999px;align-items:center;gap:6px;padding:6px 11px;font-size:12px;font-weight:700;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.ms-blog-cta__perks li{background:color-mix(in srgb, var(--ec-surface) 88%, var(--ec-canvas))}}.ms-blog-cta__perks li{border:1px solid var(--ec-border)}@supports (color:color-mix(in lab, red, red)){.ms-blog-cta__perks li{border:1px solid color-mix(in srgb, var(--ec-border) 80%, transparent)}}.ms-blog-cta__perks li{color:var(--ec-text-secondary)}.ms-blog-cta__trust{font-family:var(--font-mono);letter-spacing:.04em;color:var(--ec-text-faint);margin-top:16px;font-size:11px;font-weight:600}.ms-greennote{font-family:var(--ec-font-handwriting,"Caveat", cursive);color:var(--ec-brand);font-size:21px;line-height:1.35}.ms-hiw-step{grid-template-columns:1fr 1fr;align-items:center;gap:48px;margin-top:56px;display:grid}.ms-hiw-step.flip>:first-child{order:2}.ms-hiw-num{font-family:var(--font-display);color:var(--ec-brand);margin-bottom:12px;font-size:42px;font-style:italic;line-height:1}.ms-canct{grid-template-columns:1fr 1fr;gap:18px;margin-top:28px;display:grid}.ms-canct-item{color:var(--ec-text-secondary);align-items:baseline;gap:10px;padding:10px 0;font-size:14.5px;display:flex}.ms-canct-item .m{flex-shrink:0;font-weight:700}.ms-story-founder{grid-template-columns:auto 1fr;align-items:start;gap:36px;margin-top:36px;display:grid}.ms-story-avatar{background:var(--ec-brand-muted);border:1.5px dashed var(--ec-brand-border);text-align:center;border-radius:50%;place-items:center;width:150px;height:150px;padding:14px;display:grid}.ms-founder-quote{font-family:var(--font-display);color:var(--ec-text-primary);margin:0 0 16px;font-size:clamp(22px,3vw,26px);line-height:1.35}.ms-founder-quote em{font-style:italic}.ms-story-timeline{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-lg,16px);overflow:hidden}.ms-story-row{border-bottom:1px solid var(--ec-border);grid-template-columns:120px 1fr;align-items:baseline;gap:20px;padding:18px 22px;display:grid}.ms-story-row:last-child{border-bottom:none}.ms-quick-answer{border:1px solid var(--ec-brand);margin-bottom:40px;padding:20px 22px}@supports (color:color-mix(in lab, red, red)){.ms-quick-answer{border:1px solid color-mix(in srgb, var(--ec-brand) 35%, transparent)}}.ms-quick-answer{border-radius:var(--ec-radius-lg,16px);background:var(--ec-brand-muted)}.ms-results-day-banner{border:1px solid var(--ec-brand);align-items:flex-start;gap:16px;margin-bottom:0;padding:20px 22px;display:flex}@supports (color:color-mix(in lab, red, red)){.ms-results-day-banner{border:1px solid color-mix(in srgb, var(--ec-brand) 40%, transparent)}}.ms-results-day-banner{border-radius:var(--ec-radius-lg,16px);background:linear-gradient(135deg, var(--ec-brand) 0%, var(--ec-bg-soft) 100%)}@supports (color:color-mix(in lab, red, red)){.ms-results-day-banner{background:linear-gradient(135deg, color-mix(in srgb, var(--ec-brand) 12%, var(--ec-bg)) 0%, var(--ec-bg-soft) 100%)}}.ms-results-day-banner__icon{background:var(--ec-brand-muted);width:40px;height:40px;color:var(--ec-brand);border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;display:flex}.ms-boundary-hub-table{min-width:560px;margin-top:0}.ms-boundary-hub-level{color:var(--ec-text-secondary);margin-top:2px;font-size:.8rem;display:block}.ms-boundary-hub-muted{color:var(--ec-text-secondary);font-size:.875rem}.ms-hub-grid{grid-template-columns:repeat(2,1fr);gap:18px;display:grid}.ms-hub-tabs{border:1px solid var(--ec-border);background:var(--ec-bg-soft);border-radius:999px;flex-wrap:wrap;gap:8px;margin-top:28px;padding:4px;display:inline-flex}.ms-hub-tab{font-family:var(--font-sans);color:var(--ec-text-secondary);border-radius:999px;align-items:center;min-height:44px;padding:10px 18px;font-size:14px;font-weight:500;text-decoration:none;transition:color .15s,background .15s;display:inline-flex}.ms-hub-tab.on{background:var(--ec-surface);color:var(--ec-brand);box-shadow:var(--ec-shadow-card,0 1px 3px #00000014);font-weight:600}.ms-hub-strip{flex-wrap:wrap;align-items:center;gap:9px;margin-top:8px;padding:0;list-style:none;display:flex}.ms-hub-strip-more{margin-left:4px;font-size:15px}.ms-guide-feature{margin-top:0}.ms-content-hero .ms-hub-tabs{margin-top:24px}@media (prefers-reduced-motion:reduce){.ms-hub-tab{transition:none}}.ms-hub-cta{flex-flow:wrap;align-items:center;gap:20px;margin-top:40px}.ms-blog-post-shell{max-width:none;padding-left:0;padding-right:0}.ms-blog-post-shell .ms-pg{max-width:min(var(--ec-maxw,1200px), 100%)}.ms-blog-layout{gap:2.5rem;display:grid}@media (min-width:1024px){.ms-blog-layout{grid-template-columns:minmax(180px,220px) minmax(0,1fr);align-items:start;gap:3rem}.ms-blog-post-shell .ec-reading-column{font-size:var(--ec-reading-size);line-height:var(--ec-reading-leading)}.ms-blog-post-shell .ms-content-hero .ms-lead,.ms-blog-post-shell .ms-blog-hero-lead,.ms-blog-post-shell .ms-quick-answer{max-width:var(--ec-reading-measure)}}@media (min-width:1280px){.ms-blog-post-shell .ms-pg{padding-left:40px;padding-right:40px}.ms-blog-layout{grid-template-columns:minmax(200px,240px) minmax(0,1fr);gap:3.5rem}}.ms-blog-toc{position:sticky;top:6rem}.ms-blog-toc a[data-active=true]{color:var(--ec-brand);font-weight:600}.ms-blog-post-shell a:focus-visible,.ms-blog-post-shell button:focus-visible{box-shadow:var(--ec-focus-ring);border-radius:4px;outline:none}.ms-board-filter{flex-direction:column;gap:12px;margin-top:16px;display:flex}.ms-board-subjects{flex-wrap:wrap;gap:8px;display:flex}.ms-board-subjects .ec-chip-ms.on{background:var(--ec-brand-muted);border-color:var(--ec-brand-border);color:var(--ec-brand)}.ms-board-subjects__count{opacity:.6;font-variant-numeric:tabular-nums}.ms-board-group-label{letter-spacing:.06em;text-transform:uppercase;color:var(--ec-text-faint);align-self:center;margin-right:4px;font-size:11px;font-weight:700}.ms-blog-toc ol{margin:0;padding:0;list-style:none}.ms-blog-toc a{color:var(--ec-text-secondary);padding:6px 0;font-size:14px;text-decoration:none;transition:color .15s;display:block}.ms-blog-toc a:hover{color:var(--ec-brand)}.ms-blog-aside{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-lg,16px);box-shadow:var(--ec-shadow-card,0 1px 3px #0000000f);padding:20px 22px}.ms-blog-cta-block{background:var(--ec-brand-muted);border:1px solid var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ms-blog-cta-block{border:1px solid color-mix(in srgb, var(--ec-brand) 35%, transparent)}}.ms-blog-cta-block{border-radius:var(--ec-radius-lg,16px);padding:24px 26px}.ec-blog-continue-sheet{background:var(--ec-surface);border:1px solid var(--ec-brand-border);box-shadow:var(--ec-card-shadow), 0 24px 48px var(--ec-text-primary)}@supports (color:color-mix(in lab, red, red)){.ec-blog-continue-sheet{box-shadow:var(--ec-card-shadow), 0 24px 48px color-mix(in srgb, var(--ec-text-primary) 12%, transparent)}}.ec-blog-continue-sheet>button[aria-label=Close]{color:var(--ec-text-primary);background:var(--ec-surface)}@supports (color:color-mix(in lab, red, red)){.ec-blog-continue-sheet>button[aria-label=Close]{background:color-mix(in srgb, var(--ec-surface) 88%, transparent)}}.ec-blog-continue-sheet>button[aria-label=Close]{border:1px solid var(--ec-border)}@supports (color:color-mix(in lab, red, red)){.ec-blog-continue-sheet>button[aria-label=Close]{border:1px solid color-mix(in srgb, var(--ec-border) 70%, transparent)}}.ec-blog-continue-sheet>button[aria-label=Close]{border-radius:999px}.ec-blog-continue-popup{position:relative}.ec-blog-continue-popup__body{padding:20px 24px 24px;padding-top:calc(20px + env(safe-area-inset-top,0px));padding-bottom:calc(24px + env(safe-area-inset-bottom,0px))}@media (min-width:640px){.ec-blog-continue-popup__body{padding:24px 28px 28px}}.ec-blog-continue-popup__badge{font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ec-text-secondary);background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:999px;align-items:center;gap:6px;margin-bottom:12px;padding:5px 11px;font-size:10.5px;font-weight:700;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.ec-blog-continue-popup__badge{border:1px solid color-mix(in srgb, var(--ec-border) 85%, transparent)}}.ec-blog-continue-popup__title{font-family:var(--font-display,"Newsreader", Georgia, serif);color:var(--ec-text-primary);margin:0;font-size:clamp(1.35rem,4vw,1.55rem);font-weight:500;line-height:1.2}.ec-blog-continue-popup__lead{color:var(--ec-text-secondary);margin:10px 0 0;font-size:15px;line-height:1.55}.ec-blog-continue-popup__signup{margin-top:20px}.ec-blog-continue-popup__signup-btn{justify-content:center;width:100%;min-height:48px}.ec-blog-continue-popup__trust{text-align:center;color:var(--ec-text-faint);margin:12px 0 0;font-size:12px;line-height:1.45}.ec-blog-continue-popup__perks{flex-wrap:wrap;gap:8px;margin:20px 0 0;padding:0;list-style:none;display:flex}.ec-blog-continue-popup__perks li{color:var(--ec-text-secondary);background:var(--ec-surface-raised,var(--ec-surface));border-radius:999px;align-items:center;gap:6px;padding:6px 10px;font-size:12px;font-weight:600;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.ec-blog-continue-popup__perks li{background:color-mix(in srgb, var(--ec-surface-raised,var(--ec-surface)) 90%, var(--ec-canvas))}}.ec-blog-continue-popup__perks li{border:1px solid var(--ec-border)}@supports (color:color-mix(in lab, red, red)){.ec-blog-continue-popup__perks li{border:1px solid color-mix(in srgb, var(--ec-border) 85%, transparent)}}.ec-blog-continue-popup__perks li svg{color:var(--ec-text-secondary)}.ec-blog-continue-popup__discuss{border-radius:var(--ec-radius-lg,16px);background:linear-gradient(145deg, var(--ec-brand) 0%, var(--ec-surface) 52%, var(--ec-brand) 100%);margin-top:20px;padding:16px}@supports (color:color-mix(in lab, red, red)){.ec-blog-continue-popup__discuss{background:linear-gradient(145deg, color-mix(in srgb, var(--ec-brand) 9%, var(--ec-surface)) 0%, var(--ec-surface) 52%, color-mix(in srgb, var(--ec-brand) 5%, var(--ec-surface)) 100%)}}.ec-blog-continue-popup__discuss{border:1px solid var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-blog-continue-popup__discuss{border:1px solid color-mix(in srgb, var(--ec-brand) 24%, var(--ec-border))}}.ec-blog-continue-popup__discuss-meta{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px;display:flex}.ec-blog-continue-popup__discuss-meta .ec-discuss-avatars{margin-bottom:0}.ec-blog-continue-popup__discuss-kicker{font-family:var(--font-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ec-text-faint);margin:0;font-size:10px;font-weight:700}.ec-blog-continue-popup__discuss-title{color:var(--ec-text-primary);margin:6px 0 14px;font-size:15px;font-weight:600;line-height:1.35}.ec-blog-continue-popup__discuss-btn{justify-content:center;align-items:center;gap:10px;width:100%;min-height:48px;display:inline-flex}.ec-btn-discuss{z-index:1;border-radius:var(--ec-radius-pill,999px);width:100%;min-height:52px;color:var(--ec-on-brand-text,#fff);background:linear-gradient(118deg, var(--ec-accent-coral) 0%, var(--ec-accent-warm-deep,#ffca7a) 38%, var(--ec-brand-deep,var(--ec-brand)) 100%);border:1px solid var(--ec-accent-coral);justify-content:center;align-items:center;gap:10px;padding:14px 20px;font-size:15px;font-weight:700;line-height:1.2;text-decoration:none;display:inline-flex;position:relative}@supports (color:color-mix(in lab, red, red)){.ec-btn-discuss{border:1px solid color-mix(in srgb, var(--ec-accent-coral) 45%, transparent)}}.ec-btn-discuss{box-shadow:0 2px 0 #00000014 inset, 0 6px 22px var(--ec-accent-coral), 0 0 0 1px var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-btn-discuss{box-shadow:0 2px 0 #00000014 inset, 0 6px 22px color-mix(in srgb, var(--ec-accent-coral) 32%, transparent), 0 0 0 1px color-mix(in srgb, var(--ec-brand) 25%, transparent)}}.ec-btn-discuss{transition:transform .2s cubic-bezier(.2,1.2,.4,1),box-shadow .2s,filter .18s;overflow:hidden}.ec-btn-discuss>*{z-index:1;position:relative}.ec-btn-discuss:after{content:"";z-index:0;pointer-events:none;background:linear-gradient(105deg,#0000 35%,#ffffff47 50%,#0000 65%);animation:3.5s ease-in-out infinite ec-discuss-shimmer;position:absolute;inset:0;transform:translate(-120%)}.ec-btn-discuss:hover{filter:brightness(1.06);box-shadow:0 2px 0 #0000000f inset, 0 12px 28px var(--ec-accent-coral), 0 0 0 1px var(--ec-brand);transform:translateY(-2px)}@supports (color:color-mix(in lab, red, red)){.ec-btn-discuss:hover{box-shadow:0 2px 0 #0000000f inset, 0 12px 28px color-mix(in srgb, var(--ec-accent-coral) 38%, transparent), 0 0 0 1px color-mix(in srgb, var(--ec-brand) 35%, transparent)}}.ec-btn-discuss:active{transform:translateY(0)scale(.99)}.ec-discuss-live{font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:#15803d;background:#22c55e;border-radius:999px;align-items:center;gap:7px;padding:4px 10px 4px 8px;font-size:10px;font-weight:700;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.ec-discuss-live{background:color-mix(in srgb, #22c55e 16%, var(--ec-surface))}}.ec-discuss-live{border:1px solid #22c55e59}.ec-discuss-live__dot{background:#22c55e;border-radius:50%;width:7px;height:7px;animation:1.8s ease-in-out infinite ec-discuss-pulse;box-shadow:0 0 #22c55e8c}.ec-discuss-avatars{align-items:center;display:flex}.ec-discuss-avatars__bubble{color:#fff;border:2px solid var(--ec-surface);border-radius:50%;place-items:center;width:28px;height:28px;margin-left:-6px;font-size:11px;font-weight:800;display:grid;box-shadow:0 2px 6px #0000001f}.ec-discuss-avatars__bubble:first-child{margin-left:0}.ec-discuss-avatars__bubble--a{background:linear-gradient(135deg,#f08a72,#e85d4a)}.ec-discuss-avatars__bubble--b{background:linear-gradient(135deg,#f0b465,#d98324)}.ec-discuss-avatars__bubble--c{background:linear-gradient(135deg,#4fd1c5,#19774d)}.ec-discuss-avatars__more{color:var(--ec-text-secondary);margin-left:6px;font-size:12px;font-weight:700}.ec-blog-continue-popup__skip{width:100%;color:var(--ec-text-secondary);cursor:pointer;text-underline-offset:3px;background:0 0;border:none;margin-top:16px;padding:10px 8px;font-size:14px;font-weight:600;text-decoration:underline;transition:color .15s;display:block}.ec-blog-continue-popup__skip:hover{color:var(--ec-text-primary)}.ec-blog-continue-popup__skip:focus-visible{outline:2px solid var(--ec-brand);outline-offset:2px;border-radius:6px}.ec-guest-signup-redirect{z-index:var(--ec-z-modal,250);background:var(--ec-canvas,#f5f3ef);justify-content:center;align-items:center;padding:1.5rem;display:flex;position:fixed;inset:0}@supports (color:color-mix(in lab, red, red)){.ec-guest-signup-redirect{background:color-mix(in srgb, var(--ec-canvas,#f5f3ef) 72%, transparent)}}.ec-guest-signup-redirect{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.ec-guest-signup-redirect__panel{text-align:center;border-radius:var(--ec-radius-lg,16px);border:1px solid var(--ec-border);background:var(--ec-surface);width:min(100%,22rem);box-shadow:var(--ec-shadow-elevation-3,0 18px 48px #0000001f);padding:1.5rem 1.25rem}.ec-guest-signup-redirect__eyebrow{font-family:var(--font-mono);letter-spacing:.18em;text-transform:uppercase;color:var(--ec-brand-deep,var(--ec-brand));margin-bottom:.5rem;font-size:11px;font-weight:500}.ec-guest-signup-redirect__title{letter-spacing:-.02em;color:var(--ec-text-primary);margin-bottom:.5rem;font-size:1.125rem;font-weight:600}.ec-guest-signup-redirect__lead{color:var(--ec-text-secondary);font-size:.875rem;line-height:1.5}.ec-guest-signup-redirect__cta{justify-content:center;align-items:center;width:100%;min-height:44px;margin-top:1.25rem;display:flex}.ec-guest-signup-redirect__skip{border-radius:var(--ec-radius-button,12px);border:1px dashed var(--ec-brand);justify-content:center;align-items:center;width:100%;min-height:44px;margin-top:1rem;display:flex}@supports (color:color-mix(in lab, red, red)){.ec-guest-signup-redirect__skip{border:1px dashed color-mix(in srgb, var(--ec-brand) 28%, var(--ec-border))}}.ec-guest-signup-redirect__skip{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-guest-signup-redirect__skip{background:color-mix(in srgb, var(--ec-brand) 4%, var(--ec-surface))}}.ec-guest-signup-redirect__skip{color:var(--ec-text-secondary);padding:.625rem 1rem;font-size:.875rem;font-weight:500;transition:color .15s,border-color .15s,background .15s}.ec-guest-signup-redirect__skip:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-guest-signup-redirect__skip:hover{border-color:color-mix(in srgb, var(--ec-brand) 40%, var(--ec-border))}}.ec-guest-signup-redirect__skip:hover{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-guest-signup-redirect__skip:hover{background:color-mix(in srgb, var(--ec-brand) 8%, var(--ec-surface))}}.ec-guest-signup-redirect__skip:hover{color:var(--ec-text-primary)}.ec-guest-browse-skip{border-radius:var(--ec-radius-button,12px);border:1px dashed var(--ec-brand);justify-content:center;align-items:center;width:100%;min-height:44px;display:flex}@supports (color:color-mix(in lab, red, red)){.ec-guest-browse-skip{border:1px dashed color-mix(in srgb, var(--ec-brand) 28%, var(--ec-border))}}.ec-guest-browse-skip{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-guest-browse-skip{background:color-mix(in srgb, var(--ec-brand) 4%, var(--ec-surface))}}.ec-guest-browse-skip{color:var(--ec-text-secondary);padding:.625rem 1rem;font-size:.875rem;font-weight:500;transition:color .15s,border-color .15s,background .15s}.ec-guest-browse-skip:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-guest-browse-skip:hover{border-color:color-mix(in srgb, var(--ec-brand) 40%, var(--ec-border))}}.ec-guest-browse-skip:hover{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-guest-browse-skip:hover{background:color-mix(in srgb, var(--ec-brand) 8%, var(--ec-surface))}}.ec-guest-browse-skip:hover{color:var(--ec-text-primary)}.ec-blog-footer-cta{border-radius:var(--ec-radius-lg,16px);border:1px solid var(--ec-brand);overflow:hidden}@supports (color:color-mix(in lab, red, red)){.ec-blog-footer-cta{border:1px solid color-mix(in srgb, var(--ec-brand) 22%, var(--ec-border))}}.ec-blog-footer-cta{background:linear-gradient(145deg, var(--ec-brand) 0%, var(--ec-surface) 45%, var(--ec-accent-warm) 100%)}@supports (color:color-mix(in lab, red, red)){.ec-blog-footer-cta{background:linear-gradient(145deg, color-mix(in srgb, var(--ec-brand) 7%, var(--ec-surface)) 0%, var(--ec-surface) 45%, color-mix(in srgb, var(--ec-accent-warm) 9%, var(--ec-surface)) 100%)}}.ec-blog-footer-cta{box-shadow:var(--ec-card-shadow)}.ec-blog-footer-cta__inner{gap:24px;padding:24px 22px;display:grid}@media (min-width:768px){.ec-blog-footer-cta__inner{grid-template-columns:1fr 1fr;align-items:center;gap:32px;padding:28px 32px}}.ec-blog-footer-cta__title{font-family:var(--font-display,"Newsreader", Georgia, serif);color:var(--ec-text-primary);margin:8px 0 0;font-size:clamp(1.25rem,2.5vw,1.5rem);font-weight:500;line-height:1.2}.ec-blog-footer-cta__lead{color:var(--ec-text-secondary);margin:12px 0 0;font-size:15px;line-height:1.55}.ec-blog-footer-cta__trust{color:var(--ec-text-faint);margin:14px 0 0;font-size:12px}.ec-blog-footer-cta__actions{flex-direction:column;gap:12px;display:flex}.ec-blog-footer-cta__discuss{border-radius:var(--ec-radius-lg,14px);background:linear-gradient(145deg, var(--ec-accent-coral) 0%, var(--ec-accent-warm) 50%, var(--ec-brand) 100%);padding:16px;position:relative}@supports (color:color-mix(in lab, red, red)){.ec-blog-footer-cta__discuss{background:linear-gradient(145deg, color-mix(in srgb, var(--ec-accent-coral) 20%, var(--ec-surface)) 0%, color-mix(in srgb, var(--ec-accent-warm) 16%, var(--ec-surface)) 50%, color-mix(in srgb, var(--ec-brand) 10%, var(--ec-surface)) 100%)}}.ec-blog-footer-cta__discuss{border:1px solid var(--ec-accent-coral)}@supports (color:color-mix(in lab, red, red)){.ec-blog-footer-cta__discuss{border:1px solid color-mix(in srgb, var(--ec-accent-coral) 35%, var(--ec-accent-warm))}}.ec-blog-footer-cta__discuss{box-shadow:0 2px 14px var(--ec-accent-warm)}@supports (color:color-mix(in lab, red, red)){.ec-blog-footer-cta__discuss{box-shadow:0 2px 14px color-mix(in srgb, var(--ec-accent-warm) 16%, transparent)}}.ec-blog-footer-cta__discuss{overflow:hidden}.ec-blog-footer-cta__discuss:before{content:"";background:radial-gradient(ellipse at 70% 50%, var(--ec-brand) 0%, transparent 70%);height:90px;position:absolute;inset:-30% -10% auto}@supports (color:color-mix(in lab, red, red)){.ec-blog-footer-cta__discuss:before{background:radial-gradient(ellipse at 70% 50%, color-mix(in srgb, var(--ec-brand) 30%, transparent) 0%, transparent 70%)}}.ec-blog-footer-cta__discuss:before{pointer-events:none;opacity:.5}.ec-blog-footer-cta__discuss-meta{z-index:1;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:10px;display:flex;position:relative}.ec-blog-footer-cta__discuss-meta .ec-discuss-avatars{margin-bottom:0}.ec-blog-footer-cta__discuss-label{z-index:1;font-family:var(--font-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ec-accent-warm-deep,var(--ec-accent-warm));margin:0 0 10px;font-size:10px;font-weight:700;position:relative}.ec-blog-footer-cta__signup{width:100%}.ec-blog-footer-cta__secondary{flex-wrap:wrap;gap:8px;display:flex}@media (prefers-reduced-motion:reduce){.ec-btn-discuss:hover,.ec-btn-discuss:active{transform:none}.ec-btn-discuss:after{animation:none;display:none}.ec-discuss-live__dot{animation:none}}@keyframes ec-discuss-pulse{0%,to{box-shadow:0 0 #22c55e80}50%{box-shadow:0 0 0 6px #0000}}@keyframes ec-discuss-shimmer{0%,72%{transform:translate(-120%)}to{transform:translate(120%)}}.ms-blog-card{gap:12px}.ms-blog-card--editorial .ms-gt{font-size:clamp(1.2rem,2.5vw,1.45rem)}.ms-blog-card--compact{padding:18px 20px}.ms-blog-card--compact .ms-gt{font-size:17px}.ms-blog-card__title--featured{font-size:clamp(1.35rem,3vw,1.75rem)}@media (max-width:900px){.ms-hub-grid,.ms-guide-feature,.ms-hiw-step,.ms-canct,.ms-story-founder{grid-template-columns:1fr}.ms-hiw-step.flip>:first-child{order:0}.ms-guide-grid,.ms-blog-stats{grid-template-columns:1fr}.ms-guide-feature{padding:28px 24px}}@media (prefers-reduced-motion:reduce){.ms-guide-card{transition:none}}.cmd-tool{margin-top:28px}.cmd-controls{flex-direction:column;gap:14px;margin-bottom:28px;display:flex}.cmd-search{border:1px solid var(--ec-border);border-radius:var(--ec-radius-lg,14px);background:var(--ec-surface);width:100%;color:var(--ec-text-primary);padding:12px 16px;font-size:16px}.cmd-search:focus{outline:2px solid var(--ec-brand);outline-offset:1px}.cmd-tabs{flex-wrap:wrap;gap:8px;display:flex}.cmd-tab{text-transform:capitalize;border:1px solid var(--ec-border);background:var(--ec-surface);color:var(--ec-text-secondary);cursor:pointer;border-radius:999px;padding:7px 14px;font-size:13px;transition:background .15s,color .15s,border-color .15s}.cmd-tab:hover{border-color:var(--ec-brand)}.cmd-tab.is-active{background:var(--ec-brand);border-color:var(--ec-brand);color:var(--ec-on-brand-text)}.cmd-group{margin-top:28px}.cmd-group-head{margin-bottom:12px}.cmd-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:0;padding:0;list-style:none;display:grid}.cmd-card{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-lg,16px);box-shadow:var(--ec-shadow-card,0 1px 3px #0000000f);padding:20px 22px}.cmd-word{font-family:var(--ec-font-display,"Newsreader", serif);color:var(--ec-brand);margin:0 0 6px;font-size:1.2rem}.cmd-meaning{color:var(--ec-text-primary);margin:0 0 12px;font-size:15px;line-height:1.5}.cmd-detail{gap:8px;margin:0;display:grid}.cmd-detail dt{letter-spacing:.06em;text-transform:uppercase;color:var(--ec-brand);margin-bottom:2px;font-size:11px}.cmd-detail dd{color:var(--ec-text-secondary);margin:0;font-size:14px;line-height:1.45}.gb-tool{margin-top:28px}.gb-grid{grid-template-columns:1.1fr .9fr;align-items:start;gap:20px;display:grid}.gb-inputs,.gb-result{background:var(--ec-surface);border:1px solid var(--ec-border);border-radius:var(--ec-radius-lg,16px);box-shadow:var(--ec-shadow-card,0 1px 3px #0000000f);padding:22px 24px}.gb-level{gap:8px;margin-bottom:18px;display:flex}.gb-field{margin-bottom:14px;display:block}.gb-field span{color:var(--ec-text-secondary);margin-bottom:6px;font-size:13px;display:block}.gb-field input,.gb-threshold input{border:1px solid var(--ec-border);background:var(--ec-surface);width:100%;color:var(--ec-text-primary);border-radius:10px;padding:10px 12px;font-size:15px}.gb-field input:focus,.gb-threshold input:focus,.cmd-tab:focus-visible{outline:2px solid var(--ec-brand);outline-offset:1px}.gb-help{color:var(--ec-text-secondary);margin:4px 0 14px;line-height:1.5}.gb-thresholds{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;display:grid}.gb-threshold{flex-direction:column;gap:4px;display:flex}.gb-grade-label{color:var(--ec-brand);font-size:12px;font-weight:600}.gb-result{text-align:center;position:sticky;top:90px}.gb-result-empty{color:var(--ec-text-secondary);padding:24px 8px}.gb-grade-big{color:var(--ec-brand);margin:6px 0;font-size:3.4rem;font-weight:600;line-height:1}.gb-percent{color:var(--ec-text-secondary);margin:0 0 10px;font-size:14px}.gb-next{color:var(--ec-text-primary);margin:0 0 10px;font-size:15px}.gb-disclaimer{color:var(--ec-text-secondary);line-height:1.45}@media (max-width:760px){.cmd-list,.gb-grid{grid-template-columns:1fr}.gb-result{position:static}}.gb-official{border:1px solid var(--ec-brand);margin-bottom:18px;padding:18px 20px}@supports (color:color-mix(in lab, red, red)){.gb-official{border:1px solid color-mix(in srgb, var(--ec-brand) 35%, transparent)}}.gb-official{border-radius:var(--ec-radius-lg,16px);background:var(--ec-brand-muted)}.gb-official-controls{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;display:grid}.gb-field select{border:1px solid var(--ec-border);background:var(--ec-surface);width:100%;color:var(--ec-text-primary);border-radius:10px;padding:10px 12px;font-size:15px}.gb-field select:focus{outline:2px solid var(--ec-brand);outline-offset:1px}.gb-data-table{border-collapse:collapse;width:100%;font-size:14px}.gb-data-table th,.gb-data-table td{border:1px solid var(--ec-border);text-align:left;padding:8px 10px}.gb-data-table th{background:var(--ec-brand-muted);letter-spacing:.04em;text-transform:uppercase;color:var(--ec-text-secondary);font-size:12px}.gb-data-table td.mono,.gb-data-table th:not(:nth-child(2)){text-align:center}.compare-table-card{border:1px solid var(--ec-border);border-radius:var(--ec-radius-card-lg,20px);background:var(--ec-surface);box-shadow:var(--ec-card-shadow);overflow:hidden}.compare-table-head th{font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ec-text-faint);border-bottom:1px solid var(--ec-border);background:var(--ec-surface-raised);white-space:nowrap;font-size:11px;font-weight:600}.compare-table-row{color:var(--ec-text-secondary)}.compare-table-row+.compare-table-row{border-top:1px solid var(--ec-border-soft)}.compare-table-row:hover{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.compare-table-row:hover{background:color-mix(in srgb, var(--ec-brand) 3%, transparent)}}.compare-table-row--self{background:var(--ec-brand-muted);box-shadow:inset 3px 0 0 var(--ec-brand)}.compare-table-row--self:hover{background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.compare-table-row--self:hover{background:color-mix(in srgb, var(--ec-brand) 9%, transparent)}}.ms-cmdk-overlay{z-index:95;background:var(--ec-text-primary);position:fixed;inset:0}@supports (color:color-mix(in lab, red, red)){.ms-cmdk-overlay{background:color-mix(in srgb, var(--ec-text-primary) 26%, transparent)}}.ms-cmdk-overlay{justify-content:center;align-items:flex-start;padding-top:14vh;display:flex}.ms-cmdk{background:var(--ec-surface);border:1px solid var(--ec-border);width:min(560px,100vw - 32px);box-shadow:var(--ec-shadow-pop,0 8px 24px #0000001f);border-radius:16px;overflow:hidden}.ms-omni-fab{right:26px;bottom:calc(26px + env(safe-area-inset-bottom,0px));z-index:80;background:var(--ec-brand);color:var(--ec-on-brand-text,#fff);font-family:var(--ec-font-handwriting,"Caveat", cursive);cursor:pointer;box-shadow:var(--ec-shadow-cta,var(--ec-shadow-pop));white-space:nowrap;border:none;border-radius:999px;align-items:center;gap:9px;min-height:48px;padding:14px 22px;font-size:21px;transition:transform .2s cubic-bezier(.4,0,.2,1);display:inline-flex;position:fixed}.ms-omni-fab:hover{transform:translateY(-1px)}.ms-omni-panel{right:26px;bottom:calc(92px + env(safe-area-inset-bottom,0px));z-index:81;background:var(--ec-surface);border:1px solid var(--ec-border);width:min(380px,100vw - 24px);max-height:min(560px,100vh - 130px);box-shadow:var(--ec-shadow-pop,0 8px 24px #0000001f);border-radius:18px;flex-direction:column;display:flex;position:fixed;overflow:hidden}.ms-omni-panel--drawer{width:100%;height:100%;max-height:none;box-shadow:none;border:none;border-radius:0;position:relative;bottom:auto;right:auto}.ms-omni-panel--landing{border-radius:24px 24px 0 0;width:min(680px,100vw - 32px);height:85vh;max-height:min(800px,85vh);position:relative;bottom:auto;right:auto}@media (min-width:768px){.ms-omni-panel--landing{border-radius:24px;height:80vh}}.ms-omni-head{border-bottom:1px solid var(--ec-border);background:var(--ec-bg-soft);justify-content:space-between;align-items:center;padding:14px 18px;display:flex}.ms-omni-head .ms-omni-title{font-family:var(--font-display);color:var(--ec-text-primary);margin:0;font-size:18px;font-weight:600}.ms-omni-head .ms-omni-title i{color:var(--ec-brand);font-style:normal}.ms-omni-head button{color:var(--ec-text-faint);cursor:pointer;background:0 0;border:none;min-width:44px;min-height:44px;font-size:16px}.ms-omni-body{flex-direction:column;flex:1;gap:12px;padding:18px;display:flex;overflow:hidden auto}.ms-omni-msg{border-radius:14px;max-width:85%;padding:11px 15px;font-size:14px;line-height:1.55}.ms-omni-msg.user{background:var(--ec-brand);color:var(--ec-on-brand-text,#fff);border-bottom-right-radius:4px;align-self:flex-end}.ms-omni-msg.bot{background:var(--ec-bg-soft);border:1px solid var(--ec-border);color:var(--ec-text-secondary);border-bottom-left-radius:4px;align-self:flex-start}.ms-omni-msg.bot .ms-omni-cite{font-family:var(--font-mono);color:var(--ec-text-faint);border-top:1px dashed var(--ec-border);margin-top:8px;padding-top:7px;font-size:10.5px;display:block}.ms-omni-suggest{flex-wrap:wrap;gap:7px;display:flex}.ms-omni-suggest button{color:var(--ec-brand);background:var(--ec-brand-muted);border:1px solid var(--ec-brand-border);cursor:pointer;font-size:12.5px;font-family:var(--font-sans);border-radius:999px;min-height:36px;padding:6px 13px}.ms-omni-input{border-top:1px solid var(--ec-border);background:var(--ec-surface);gap:8px;padding:12px 14px;display:flex}@supports (color:color-mix(in lab, red, red)){.ms-omni-input{background:color-mix(in srgb, var(--ec-surface) 92%, transparent)}}.ms-omni-typing{font-family:var(--ec-font-handwriting,"Caveat", cursive);color:var(--ec-text-faint);align-self:flex-start;font-size:18px}@media (max-width:900px){.ms-omni-fab{right:12px;bottom:calc(26px + env(safe-area-inset-bottom,0px));padding:11px 18px;font-size:19px}body:has(.ec-tabbar) .ms-omni-fab{bottom:calc(92px + env(safe-area-inset-bottom,0px))}.ms-omni-panel{width:auto;left:12px;right:12px;bottom:calc(88px + env(safe-area-inset-bottom,0px))}body:has(.ec-tabbar) .ms-omni-panel{bottom:calc(152px + env(safe-area-inset-bottom,0px))}.ms-omni-panel--landing{border-radius:24px 24px 0 0;width:100%;max-width:none;left:0;right:0}}@media (prefers-reduced-motion:reduce){.ms-omni-fab{transition:none}}:root{--ec-paper:#fff;--ec-paper-2:var(--ec-surface-raised);--ec-paper-card:var(--ec-surface);--ec-paper-rule:#eae6dc;--ec-ink:var(--ec-text-primary);--ec-ink-soft:var(--ec-text-secondary);--ec-ink-faint:var(--ec-text-faint);--ec-line:var(--ec-border);--ec-line-soft:var(--ec-border-soft);--ec-red:var(--ec-ink-crimson);--ec-red-deep:var(--ec-ink-crimson);--ec-red-wash:var(--ec-brand-muted);--ec-pen:#2b3a8c;--ec-band:#25221b;--ec-band-text:#faf9f6;--ec-green:#19774d;--ec-hl:#ffcd4a99;--ec-shadow-paper:var(--ec-card-shadow);--ec-shadow-paper-lg:var(--ec-card-hover-shadow);--ec-shadow-hard:6px 6px 0 #25221b1a;--ec-radius-paper:2px;--ec-maxw:1200px;--ec-c-math:#735829;--ec-c-phys:#3a5fb8;--ec-c-chem:#6b5b8a;--ec-c-bio:#1a7575;--ec-c-biz:#1a7575;--ec-c-hum:#ac5276;--ec-c-comp:#3a5fb8;--ec-c-media:#ac5276}[data-ec-theme=late-night]{--ec-band:#0a0906;--ec-band-text:#f0ead9;--ec-green:#00f5a0;--ec-pen:#9eb0f5;--ec-hl:#ffcd4a73;--ec-shadow-hard:6px 6px 0 #00000073;--ec-paper:#211e14;--ec-paper-rule:#383223;--ec-red:#e06c6c;--ec-red-deep:#e06c6c;--ec-c-math:#d9b36a;--ec-c-phys:#8fa9f7;--ec-c-chem:#b5a3e8;--ec-c-bio:#4fd1c5;--ec-c-biz:#4fd1c5;--ec-c-hum:#e788ad;--ec-c-comp:#8fa9f7;--ec-c-media:#e788ad}body:before{content:"";pointer-events:none;z-index:0;opacity:.45;mix-blend-mode:multiply;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.4'/%3E%3C/svg%3E");position:fixed;inset:0}[data-ec-theme=late-night] body:before{opacity:.35;mix-blend-mode:overlay}body.ec-no-grain:before{opacity:0}.ec-scroll-progress{height:3px;width:var(--scroll-progress,0%);z-index:120;background:linear-gradient(90deg, var(--ec-brand), var(--ec-c-math), var(--ec-c-bio), var(--ec-c-phys), var(--ec-c-chem));border-radius:0 3px 3px 0;position:fixed;top:0;left:0}.ec-eyebrow{font-family:var(--font-mono);letter-spacing:.22em;text-transform:uppercase;color:var(--ec-red-deep);font-size:12px;font-weight:500}.ec-display{font-family:var(--font-display);letter-spacing:-.012em;color:var(--ec-ink);font-weight:400;line-height:1.1}.ec-display em,.ec-display-italic{color:var(--ec-brand);font-style:italic}.ec-hl{background-image:linear-gradient(104deg, transparent .12em, var(--ec-hl) .12em, var(--ec-hl) calc(100% - .14em), transparent calc(100% - .14em));-webkit-box-decoration-break:clone;box-decoration-break:clone;background-position:0 84%;background-repeat:no-repeat;background-size:100% 42%;border-radius:2px;padding:0 .1em}[data-ec-theme=late-night] .ec-hl{color:#1a1206}.ec-brand-lockup{color:var(--ec-ink)}.ec-brand-wordmark{font-family:var(--font-display,"Newsreader", Georgia, serif);letter-spacing:-.02em;color:var(--ec-ink);font-weight:600;line-height:1}.ec-band-section{background:var(--ec-band);color:var(--ec-band-text)}.ec-band-section .ec-eyebrow{color:var(--ec-accent-light,#e9b8b3)}.ec-band-section .ec-hl{color:inherit}.ec-mark-card{background:var(--ec-paper-card);border:1px solid var(--ec-line);border-radius:var(--ec-radius-paper);box-shadow:var(--ec-shadow-paper-lg);position:relative;overflow:visible}.ec-mark-card:after{content:"";background:var(--ec-red-wash);width:1.5px;position:absolute;top:0;bottom:0;left:54px}.ec-mark-card__head{border-bottom:1px solid var(--ec-line-soft);background:linear-gradient(var(--ec-paper-card), var(--ec-paper));border-radius:var(--ec-radius-paper) var(--ec-radius-paper) 0 0;justify-content:space-between;align-items:center;padding:16px 22px;display:flex}.ec-mark-card__body{padding:26px 26px 26px 70px}.ec-mark-card__badge{z-index:3;font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;background:var(--ec-band);color:var(--ec-band-text);box-shadow:var(--ec-shadow-paper);border-radius:8px;padding:7px 12px;font-size:11px;position:absolute;top:-18px;right:-14px;transform:rotate(4deg)}.ec-mark-tag{font-family:var(--font-mono);color:var(--ec-on-brand-text);background:var(--ec-brand);box-shadow:0 4px 10px -6px var(--ec-brand);border-radius:6px;flex:none;padding:3px 9px;font-size:13px;font-weight:600;transform:rotate(-3deg)}.ec-subj-card{background:var(--ec-paper-card);border:1px solid var(--ec-line);border-radius:16px;align-items:center;gap:13px;padding:13px 15px;transition:transform .2s cubic-bezier(.2,1.2,.4,1),box-shadow .2s,border-color .2s;display:flex;position:relative;overflow:hidden}.ec-subj-card:before{content:"";background:var(--subj-color,var(--ec-brand));width:5px;position:absolute;top:0;bottom:0;left:0}.ec-subj-card:hover{box-shadow:0 16px 32px -16px var(--subj-color,var(--ec-brand));border-color:var(--subj-color,var(--ec-brand));transform:translateY(-4px)}@supports (color:color-mix(in lab, red, red)){.ec-subj-card:hover{border-color:color-mix(in srgb, var(--subj-color,var(--ec-brand)) 50%, var(--ec-line))}}.ec-subj-code{font-family:var(--font-mono);color:var(--ec-on-brand-text);background:var(--subj-color,var(--ec-brand));text-align:center;letter-spacing:.02em;width:56px;box-shadow:0 6px 14px -8px var(--subj-color,var(--ec-brand));border-radius:10px;flex:none;padding:9px 0;font-size:13px;font-weight:600}.ec-feat-grid{background:var(--ec-line-soft);border:1px solid var(--ec-line-soft);border-radius:var(--ec-radius-paper);grid-template-columns:repeat(3,1fr);gap:1px;display:grid;overflow:hidden}.ec-feat{background:var(--ec-paper-card);padding:34px 30px;transition:transform .2s}.ec-feat:hover{background:var(--ec-paper-2)}.ec-feat__ico{width:48px;height:48px;color:var(--feat-color,var(--ec-brand));background:var(--feat-color,var(--ec-brand));border-radius:14px;place-items:center;margin-bottom:20px;display:grid}@supports (color:color-mix(in lab, red, red)){.ec-feat__ico{background:color-mix(in srgb, var(--feat-color,var(--ec-brand)) 15%, #fff)}}[data-ec-theme=late-night] .ec-feat__ico{background:var(--feat-color,var(--ec-brand))}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=late-night] .ec-feat__ico{background:color-mix(in srgb, var(--feat-color,var(--ec-brand)) 26%, transparent)}}.ec-course-item{background:#f7f2e705;border:1px solid #f7f2e729;border-radius:12px;justify-content:space-between;align-items:center;padding:18px 22px;transition:all .18s;display:flex}.ec-course-item:hover{background:#f7f2e70f;border-color:#f7f2e752;transform:translate(4px)}.ec-course-dot{background:var(--course-color,var(--ec-accent-light,#e9b8b3));width:11px;height:11px;box-shadow:0 0 0 4px var(--course-color,var(--ec-accent-light,#e9b8b3));border-radius:4px;flex:none}@supports (color:color-mix(in lab, red, red)){.ec-course-dot{box-shadow:0 0 0 4px color-mix(in srgb, var(--course-color,var(--ec-accent-light,#e9b8b3)) 22%, transparent)}}.ec-compare-bad{background:var(--ec-paper-card);border:1px solid var(--ec-line);border-radius:var(--ec-radius-paper)}.ec-compare-good{background:var(--ec-band);color:var(--ec-band-text);border:1px solid var(--ec-band);border-radius:var(--ec-radius-paper)}.ec-faq-list{border-top:1px solid var(--ec-line)}.ec-faq-item{border-bottom:1px solid var(--ec-line)}.ec-faq-item.open button{color:var(--ec-brand)}.ec-faq-item.open button span:last-child{color:var(--ec-brand-deep,var(--ec-brand))}.ec-hero-badge{font-family:var(--font-mono);letter-spacing:.03em;color:var(--ec-ink-soft);background:var(--ec-paper-card);border:1px solid var(--ec-line);box-shadow:var(--ec-shadow-paper);border-radius:999px;align-items:center;gap:9px;padding:7px 15px 7px 12px;font-size:12px;display:inline-flex}.ec-hero-badge__dot{background:var(--ec-green);border-radius:50%;flex:none;width:8px;height:8px;position:relative}.ec-prompt{font-family:var(--font-mono);color:var(--ec-ink-soft);border:1px solid var(--ec-line);background:var(--ec-paper-card);cursor:pointer;border-radius:999px;align-items:center;gap:6px;padding:8px 14px;font-size:12.5px;transition:transform .18s,border-color .18s,color .18s,box-shadow .18s;display:inline-flex}.ec-prompt:before{content:"›";color:var(--ec-brand);font-weight:700}.ec-prompt:hover{border-color:var(--ec-brand);color:var(--ec-red-deep);box-shadow:var(--ec-shadow-paper);transform:translateY(-2px)}.ec-marketing-header{border-color:var(--ec-line-soft);background:var(--ec-paper);position:relative}@supports (color:color-mix(in lab, red, red)){.ec-marketing-header{background:color-mix(in srgb, var(--ec-paper) 88%, transparent)}}.ec-marketing-header{-webkit-backdrop-filter:saturate(140%)blur(12px)}.ec-marketing-header:before{content:"";background:var(--ec-red-deep);opacity:.92;height:3px;position:absolute;top:0;left:0;right:0}.ec-marketing-header--scrolled{box-shadow:0 10px 32px -20px #211c1773}.ec-marketing-header__inner{grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:1rem 1.25rem;display:grid}.ec-marketing-header__brand{justify-self:start}.ec-marketing-header__nav{justify-content:center;justify-self:center}.ec-marketing-header__actions{justify-self:end}.ec-marketing-header__link{white-space:nowrap;border-radius:var(--ec-radius-button,14px);letter-spacing:.01em;color:var(--ec-ink-soft);align-items:center;gap:.25rem;padding:.45rem .7rem;font-size:.9375rem;font-weight:500;transition:color .15s;display:inline-flex;position:relative}.ec-marketing-header__link:hover{color:var(--ec-ink);background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-marketing-header__link:hover{background:color-mix(in srgb, var(--ec-brand) 5%, var(--ec-paper-card))}}.ec-marketing-header__link--active{color:var(--ec-red-deep);font-weight:600}.ec-marketing-header__link--active:after{content:"";background:var(--ec-red);border-radius:999px;height:2px;position:absolute;bottom:.2rem;left:.7rem;right:.7rem}.ec-marketing-header__more{cursor:pointer;font:inherit;background:0 0;border:none}.ec-marketing-header__ask{border-radius:var(--ec-radius-button,14px);border:1px solid var(--ec-line);background:var(--ec-paper-card);min-height:2.25rem;color:var(--ec-ink-soft);align-items:center;gap:.375rem;padding:0 .875rem;font-size:.875rem;font-weight:600;transition:border-color .15s,color .15s;display:inline-flex}.ec-marketing-header__ask:hover{border-color:var(--ec-ink);background:var(--ec-paper-2);color:var(--ec-ink)}.ec-marketing-header__signin{color:var(--ec-ink-soft);align-items:center;padding:.5rem .625rem;font-size:.875rem;font-weight:600;transition:color .15s;display:inline-flex}.ec-marketing-header__signin:hover{color:var(--ec-ink)}.ec-marketing-header__cta{white-space:nowrap;min-height:2.375rem;box-shadow:var(--ec-btn-glow);padding-left:1.125rem;padding-right:1.125rem;font-size:.875rem;font-weight:600}.ec-header-more-menu{border:1px solid var(--ec-line);border-radius:var(--ec-radius-button,14px);background:var(--ec-paper-card);box-shadow:var(--ec-shadow-paper)}.ec-header-more-menu__item{min-height:2.5rem;color:var(--ec-ink-soft);align-items:center;padding:0 .875rem;font-size:.9375rem;font-weight:500;transition:color .15s;display:flex}.ec-header-more-menu__item:hover{color:var(--ec-ink);background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-header-more-menu__item:hover{background:color-mix(in srgb, var(--ec-brand) 5%, var(--ec-paper-2))}}.ec-header-more-menu__item--active{color:var(--ec-red-deep);background:var(--ec-brand);font-weight:600}@supports (color:color-mix(in lab, red, red)){.ec-header-more-menu__item--active{background:color-mix(in srgb, var(--ec-brand) 8%, var(--ec-paper-2))}}.ec-app-header__inner{align-items:center;gap:.5rem .75rem;min-height:56px;padding-top:.625rem;padding-bottom:.625rem;display:flex}.ec-app-header__brand{flex-shrink:0}.ec-app-header__actions{margin-left:auto}@media (min-width:1024px){.ec-app-header{background:var(--ec-paper);position:relative}@supports (color:color-mix(in lab, red, red)){.ec-app-header{background:color-mix(in srgb, var(--ec-paper) 88%, transparent)}}.ec-app-header{-webkit-backdrop-filter:saturate(140%)blur(12px);box-shadow:0 1px 0 var(--ec-line-soft)}.ec-app-header:before{content:"";background:var(--ec-red-deep);opacity:.92;height:3px;position:absolute;top:0;left:0;right:0}.ec-app-header__inner{grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:1rem 1.5rem;min-height:72px;padding-top:.75rem;padding-bottom:.75rem;display:grid}.ec-app-header__actions{margin-left:0}.ec-app-header__nav{justify-self:center}.ec-app-header__actions{justify-self:end}.ec-app-header__link{white-space:nowrap;border-radius:var(--ec-radius-button,14px);color:var(--ec-ink-soft);align-items:center;padding:.45rem .7rem;font-size:.9375rem;font-weight:500;transition:color .15s,background-color .15s;display:inline-flex;position:relative}.ec-app-header__link:hover{color:var(--ec-ink);background:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ec-app-header__link:hover{background:color-mix(in srgb, var(--ec-brand) 5%, var(--ec-paper-card))}}.ec-app-header__link--active{color:var(--ec-red-deep);font-weight:600}.ec-app-header__link--active:after{content:"";background:var(--ec-red);border-radius:999px;height:2px;position:absolute;bottom:.2rem;left:.7rem;right:.7rem}}.ec-footer-band{background:var(--ec-band);color:var(--ec-band-text)}.ec-footer-band a{color:#cbbfae;transition:color .15s}.ec-footer-band a:hover{color:var(--ec-band-text)}.ec-footer-band h4,.ec-footer-band .ec-footer-band__label{font-family:var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ec-accent-light,#e9b8b3);font-size:12px}.ec-footer-band .ec-label-tech{color:var(--ec-accent-light,#e9b8b3)}@media (max-width:980px){.ec-feat-grid{grid-template-columns:1fr 1fr}.ec-mark-card__body{padding:22px 20px 22px 48px}.ec-mark-card:after{left:34px}}@media (max-width:620px){.ec-feat-grid{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){.ec-scroll-progress{display:none}}[data-ec-theme=zen] .ec-blog-hero__mesh{opacity:.35;background:radial-gradient(ellipse 70% 50% at 100% 0%, var(--ec-brand), transparent), radial-gradient(ellipse 50% 40% at 0% 100%, var(--ec-brand), transparent)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=zen] .ec-blog-hero__mesh{background:radial-gradient(ellipse 70% 50% at 100% 0%, color-mix(in srgb, var(--ec-brand) 12%, transparent), transparent), radial-gradient(ellipse 50% 40% at 0% 100%, color-mix(in srgb, var(--ec-brand) 6%, transparent), transparent)}}[data-ec-theme=zen] .ec-blog-card:hover .ec-blog-card__glow{opacity:.5}[data-ec-theme=zen] .ec-mobile-tab-bar a[aria-current=page]{font-weight:600}html[data-ec-theme=zen] .text-white,html[data-ec-theme=zen] .text-white\/90,html[data-ec-theme=zen] .text-white\/80,html[data-ec-theme=zen] .text-slate-100,html[data-ec-theme=zen] .text-slate-200,html[data-ec-theme=zen] .text-slate-300{color:var(--ec-text-primary)!important}html[data-ec-theme=zen] .text-slate-400,html[data-ec-theme=zen] .text-slate-500,html[data-ec-theme=zen] .text-slate-600{color:var(--ec-text-secondary)!important}html[data-ec-theme=zen] .text-slate-700,html[data-ec-theme=zen] .text-slate-800,html[data-ec-theme=zen] .text-slate-900{color:var(--ec-text-primary)!important}html[data-ec-theme=zen] .border-white\/5,html[data-ec-theme=zen] .border-white\/10,html[data-ec-theme=zen] .border-white\/20{border-color:var(--ec-border)!important}html[data-ec-theme=zen] .bg-white\/5,html[data-ec-theme=zen] .bg-white\/10,html[data-ec-theme=zen] .bg-dark-800\/60,html[data-ec-theme=zen] .bg-dark-900\/60{background-color:var(--ec-text-primary)!important}@supports (color:color-mix(in lab, red, red)){html[data-ec-theme=zen] .bg-white\/5,html[data-ec-theme=zen] .bg-white\/10,html[data-ec-theme=zen] .bg-dark-800\/60,html[data-ec-theme=zen] .bg-dark-900\/60{background-color:color-mix(in srgb, var(--ec-text-primary) 5%, var(--ec-surface))!important}}html[data-ec-theme=zen] .ec-on-brand-text,html[data-ec-theme=zen] .ec-btn-send,html[data-ec-theme=zen] .ec-fab-brand,html[data-ec-theme=late-night] .ec-on-brand-text,html[data-ec-theme=late-night] .ec-btn-send,html[data-ec-theme=late-night] .ec-fab-brand{color:var(--ec-on-brand-text)!important}html[data-ec-theme=zen] .text-gray-900,html[data-ec-theme=zen] .text-gray-800,html[data-ec-theme=zen] .text-gray-700,html[data-ec-theme=zen] .text-neutral-900,html[data-ec-theme=zen] .text-neutral-800,html[data-ec-theme=zen] .text-black,html[data-ec-theme=late-night] .text-gray-900,html[data-ec-theme=late-night] .text-gray-800,html[data-ec-theme=late-night] .text-gray-700,html[data-ec-theme=late-night] .text-neutral-900,html[data-ec-theme=late-night] .text-neutral-800,html[data-ec-theme=late-night] .text-black{color:var(--ec-text-primary)!important}html[data-ec-theme=late-night] .text-gray-600,html[data-ec-theme=late-night] .text-gray-500,html[data-ec-theme=late-night] .text-neutral-600,html[data-ec-theme=late-night] .text-neutral-500{color:var(--ec-text-secondary)!important}html[data-ec-theme=late-night] .text-\[\#1f1f1f\],html[data-ec-theme=late-night] .text-\[\#1f1f1f\]\/70{color:var(--ec-text-primary)!important}@supports (color:color-mix(in lab, red, red)){html[data-ec-theme=late-night] .bg-white\/90{background-color:color-mix(in srgb, var(--ec-text-primary) 6%, var(--ec-surface))!important}}.ec-nav-wrap{padding-top:env(safe-area-inset-top,0px)}.ec-cinematic-card{min-height:420px}@media (max-width:900px){.ms-mark-shell{padding-top:calc(56px + env(safe-area-inset-top,0px))}.ms-dash-page{padding-top:24px;padding-bottom:calc(64px + env(safe-area-inset-bottom,0px))}.ms-mark-steps-bar{gap:6px;margin-bottom:28px}.ec-nav-burger,.ec-theme-flip{min-width:var(--ec-touch-min,44px);min-height:var(--ec-touch-min,44px)}.ec-nav-cta-compact{min-height:var(--ec-touch-min,44px)}.app-shell.app-shell-tabbed{padding-top:1.25rem}.ms-dash-home{padding-bottom:calc(2rem + env(safe-area-inset-bottom,0px))}.ms-new-user-home .ms-new-user-hero .text-title{font-size:clamp(1.25rem,4.5vw,1.5rem)}.ms-new-user-home .grid.sm\:grid-cols-3{grid-template-columns:1fr}.ms-price-page{padding-top:40px;padding-bottom:56px}.ms-price-card{padding:24px 20px}.ec-nav-right{flex-shrink:1;gap:8px;min-width:0}.ec-nav{flex-wrap:nowrap;gap:8px}.ec-nav-utils{gap:4px}.ec-notif-bell,.notif-bell{min-width:var(--ec-touch-min,44px);min-height:var(--ec-touch-min,44px)}.ec-nav-mobile-menu{padding-bottom:calc(16px + env(safe-area-inset-bottom,0px))}.ec-nav-mobile-menu a,.ec-nav-mobile-menu button{min-height:var(--ec-touch-min,44px);align-items:center;display:flex}.ec-nav-mobile-mark{min-height:var(--ec-touch-min,44px);background:var(--ec-brand);color:var(--ec-on-brand-text,#fff);font-family:var(--font-sans);text-align:center;border-radius:12px;justify-content:center;align-items:center;margin-bottom:4px;font-size:15px;font-weight:600;display:flex;border-bottom:none!important}.ec-nav-mark-compact{min-width:var(--ec-touch-min,44px);min-height:var(--ec-touch-min,44px);border:1px solid var(--ec-brand);border-radius:10px;justify-content:center;align-items:center}@supports (color:color-mix(in lab, red, red)){.ec-nav-mark-compact{border:1px solid color-mix(in srgb, var(--ec-brand) 35%, var(--ec-border))}}.ec-nav-mark-compact{background:var(--ec-brand-muted);color:var(--ec-brand);font-family:var(--font-display,"Newsreader", Georgia, serif);flex-shrink:0;font-size:18px;font-weight:600;text-decoration:none}.ec-cinematic-card{min-height:min(360px,62dvh)}}@media (max-width:520px){.ms-mark-steps-bar{flex-direction:column;align-items:flex-start;gap:10px}.ms-mstep-sep{display:none}.ms-lvl-tab{padding:10px 14px;font-size:13px}.ms-cmp-row{grid-template-columns:1fr}.ms-cmp-row>div{padding:12px 14px}.ms-cmp-row .ms-us-head,.ms-cmp-row .ms-them-head{text-align:left}.ms-trust>div{flex:100%}.ec-exam-tally{margin:0 0 8px;display:inline-block;position:static}.ms-dash-hero .text-hero{font-size:clamp(1.75rem,6.5vw,2.25rem);line-height:1.08}.ms-dash-countdown .ec-countdown-number{font-size:clamp(2.75rem,20vw,4.25rem)}.ms-dash-countdown .text-title{font-size:clamp(1rem,4.5vw,1.25rem)}.ms-settings-shell .ms-h2{font-size:clamp(26px,7vw,34px)}.ms-settings-shell header,.ms-progress-page .mb-10{margin-bottom:1.5rem}.ms-audit-row{grid-template-columns:44px 1fr 36px;gap:8px;padding:10px 12px}.ms-audit-row .desc{overflow-wrap:anywhere;overflow-x:visible}.ec-exam-sheet__work{font-size:18px;line-height:1.3}.ec-exam-sheet__line{flex-wrap:wrap;gap:6px}.ec-mark-stamp{padding:2px 7px;font-size:11px}.ms-wp-qrow{grid-template-columns:40px minmax(0,1fr) auto;gap:8px;font-size:13px}.ms-progress-tab{gap:6px;padding:8px 12px;font-size:13px}.ms-acct-card{padding:16px 18px}.ms-acct-grid{gap:12px;margin-top:24px}}@media (max-width:400px){.ec-cmdk-btn{min-width:var(--ec-touch-min,44px);min-height:var(--ec-touch-min,44px);border-radius:10px;justify-content:center;gap:0;padding:0}.ec-cmdk-btn kbd{display:none}.ec-nav-right{gap:6px}}.ec-app-header{padding-top:env(safe-area-inset-top,0px)}@media (max-width:900px){.ms-teacher-layout{padding:1.25rem 1rem calc(2rem + env(safe-area-inset-bottom,0px))}.course-studio-topbar{top:calc(3.5rem + env(safe-area-inset-top,0px))}.course-studio-topbar-actions{flex-wrap:wrap;gap:8px}.ms-course-hero{padding-top:40px;padding-bottom:56px}.ms-content-hero .ms-h2{font-size:clamp(28px,7vw,40px)}.ms-zstats>div{flex:100%}}@media (max-width:520px){.ms-h-display{font-size:clamp(32px,9vw,44px)}.ms-hero{padding-top:28px}.ms-hero-kicker{letter-spacing:.16em;margin-bottom:12px;font-size:13px}.ms-hero-lead{margin:18px 0 24px;font-size:16px}.ms-hero-ctas{flex-direction:column;align-items:stretch;gap:12px}.ms-hero-ctas .ec-btn-primary,.ms-hero-ctas .ec-btn-warm,.ms-hero-ctas .ec-btn-ghost,.ms-hero-ctas .ec-btn-underline{width:100%;min-height:var(--ec-touch-min,44px);justify-content:center}.ms-sec{padding-top:48px}.ms-trust b{font-size:19px}.ms-trust>div{padding:16px 18px}.ms-hero-sheet-wrap .ms-sheet-caption{font-size:18px}.course-studio-grid{padding:16px 14px 40px}.course-studio-topbar{padding:12px 14px}.course-studio-topbar-actions{width:100%}.course-studio-mark-cta{min-height:var(--ec-touch-min,44px);flex:auto;justify-content:center}.ms-fc-row{grid-template-columns:1fr}.ms-fc{min-height:120px}.ms-lesson-chip-row{gap:8px;margin:12px 0 20px}.ms-course-hero{padding-top:28px;padding-bottom:40px}.ms-teacher-page .text-headline{font-size:clamp(1.5rem,5.5vw,2rem)}.ms-teacher-page .ec-card.p-12{padding:1.5rem}.ec-ms-footer__inner{grid-template-columns:1fr;padding:32px 18px 24px}.ec-ms-footer__legal{padding:0 18px 20px}}@media (max-width:900px){.ms-join-shell{padding-top:calc(1rem + env(safe-area-inset-top,0px));padding-bottom:calc(1.5rem + env(safe-area-inset-bottom,0px))}.ms-join-chrome{padding-top:.5rem;padding-bottom:.5rem}.ms-contact-page .ms-dash-card{padding:18px 16px}.ms-contact-page .ms-pg{padding-bottom:calc(3rem + env(safe-area-inset-bottom,0px))}.ms-teacher-classroom .ec-card.p-6,.ms-teacher-classroom .ec-card.p-8{padding:1.25rem}.ms-mark-form-card{padding:18px 16px}.ms-mark-form-card h3{margin-bottom:14px;font-size:20px}.ms-upload-preview-wrap{min-height:120px;max-height:min(42vh,360px);padding:8px}.ms-upload-preview{max-height:min(40vh,340px)}.ms-attempt-page{padding-bottom:calc(72px + env(safe-area-inset-bottom,0px))}.ms-omni-panel{max-height:min(480px, calc(100dvh - 168px - env(safe-area-inset-bottom,0px)))}}@media (max-width:520px){.ms-join-card{padding:1.5rem 1.25rem}.ms-join-card h1,.ms-join-card h2{font-size:clamp(1.375rem,5.5vw,1.75rem)}.ms-join-code-input{letter-spacing:.12em;font-size:clamp(1.125rem,5vw,1.5rem)}.ms-teacher-classroom header .text-headline{font-size:clamp(1.375rem,5vw,1.875rem)}.ms-teacher-classroom .ec-card.mb-8.p-6 .flex.items-center.justify-between{flex-wrap:wrap;gap:10px}.ms-teacher-invite code{letter-spacing:.1em;word-break:break-all;font-size:clamp(1.5rem,8vw,2.25rem)}.ms-teacher-invite .ec-btn-primary{width:100%;min-height:var(--ec-touch-min,44px);justify-content:center}.ms-teacher-risk-matrix{padding:1.25rem}.ms-teacher-risk-matrix h2{font-size:clamp(1.375rem,5vw,1.75rem)}.ms-teacher-risk-plot{height:min(240px,42dvh)}.ms-teacher-risk-legend{grid-template-columns:1fr}.ms-attempt-page .text-hero{font-size:clamp(1.625rem,6vw,2.125rem);line-height:1.1}.ms-attempt-page .mb-10{margin-bottom:1.5rem}.ms-mark-pg .ec-card.border-dashed .ec-btn-secondary{min-height:var(--ec-touch-min,44px);justify-content:center}.ms-mark-pg .ec-card.border-dashed:not(:has(.ms-upload-preview-wrap)){padding:1.5rem 1rem}.ms-blog-toc-mobile ol{gap:6px}.ms-blog-toc-mobile a{padding:8px 12px;font-size:12.5px}}.ms-blog-toc-mobile{-webkit-overflow-scrolling:touch;scrollbar-width:none;margin-bottom:1.25rem;padding-bottom:4px;overflow-x:auto}.ms-blog-toc-mobile::-webkit-scrollbar{display:none}.ms-blog-toc-mobile ol{flex-wrap:nowrap;gap:8px;min-width:max-content;margin:0;padding:0;list-style:none;display:flex}.ms-blog-toc-mobile a{min-height:var(--ec-touch-min,44px);border:1px solid var(--ec-border);background:var(--ec-surface);color:var(--ec-text-secondary);white-space:nowrap;border-radius:999px;align-items:center;padding:8px 14px;font-size:13px;text-decoration:none;transition:border-color .15s,color .15s,background .15s;display:inline-flex}.ms-blog-toc-mobile a:hover{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ms-blog-toc-mobile a:hover{border-color:color-mix(in srgb, var(--ec-brand) 35%, var(--ec-border))}}.ms-blog-toc-mobile a:hover{color:var(--ec-brand);background:var(--ec-brand-muted)}@media (max-width:900px){.ms-settings-shell{padding-bottom:calc(72px + env(safe-area-inset-bottom,0px))}.ms-settings-section{padding:1.25rem 1.125rem}.ms-whole-paper-result .ms-wp-grade-card{padding:24px 18px 20px}.ms-whole-paper-result .ms-mark-result-head{margin-bottom:24px}.ms-whole-paper-result .ms-audit-head{flex-wrap:wrap;gap:6px}.ms-whole-paper-upload .ec-btn-primary,.ms-whole-paper-upload .ec-btn-secondary{min-height:var(--ec-touch-min,44px);justify-content:center}}@media (max-width:520px){.ms-settings-shell .ms-lead{font-size:15px;line-height:1.5}.ms-settings-section h2.text-h3{font-size:clamp(1.125rem,4.5vw,1.375rem)}.ms-billing-actions>*,.ms-billing-actions a{width:100%}.ms-billing-actions button{justify-content:center;width:100%}.ms-billing-actions .ec-btn-primary,.ms-billing-actions .ec-btn-secondary{min-height:var(--ec-touch-min,44px)}.ms-mark-pg .ms-mark-result-head .ms-h2{font-size:clamp(1.375rem,5.5vw,1.875rem);line-height:1.12}.ms-mark-pg .ms-mark-result-head{margin-bottom:24px}.ms-whole-paper-result .ms-fix-item{flex-wrap:wrap;align-items:flex-start;gap:8px;padding:10px 0}.ms-whole-paper-result .ms-fix-item .ec-btn-underline{min-height:var(--ec-touch-min,44px);align-items:center;margin-left:0;display:inline-flex}.ms-whole-paper-result .ms-audit-head .ms-micro{letter-spacing:.08em;font-size:9px}.ms-teacher-student .text-headline{font-size:clamp(1.375rem,5vw,1.875rem)}.ms-teacher-student .ec-card,.ms-teacher-roster .ec-card{padding:1.125rem}.ms-teacher-student header .text-body{overflow-wrap:anywhere}.ms-teacher-roster .text-headline{font-size:clamp(1.375rem,5vw,1.875rem)}.ms-teacher-review h2{font-size:clamp(1.125rem,4.5vw,1.375rem)}.ms-verify-digits input{width:2.25rem;height:48px;font-size:1rem}.ms-exam-pills .ec-pill{min-height:var(--ec-touch-min,44px);align-items:center;display:inline-flex}}.ec-nav-mobile-search{width:100%;min-height:var(--ec-touch-min,44px);text-align:left;font-family:var(--font-display,"Newsreader", Georgia, serif);color:var(--ec-text-primary);border:none;border-bottom:1px solid var(--ec-border);cursor:pointer;background:0 0;align-items:center;gap:10px;padding:11px 4px;font-size:19px;display:flex}@media (max-width:900px){.ms-cmdk-overlay{padding-top:0;padding-bottom:env(safe-area-inset-bottom,0px);align-items:flex-end}.ms-cmdk-overlay .ms-omni-panel--landing{width:100%;max-width:none;height:min(88dvh, calc(100dvh - env(safe-area-inset-top,0px)));max-height:min(88dvh, calc(100dvh - env(safe-area-inset-top,0px)));border-radius:20px 20px 0 0}.ms-teacher-review-detail .ec-card.overflow-hidden{padding:.75rem}.ms-teacher-review-detail header .text-body{overflow-wrap:anywhere}.ms-override-console{max-height:none}.ms-pricing-client .ms-price-grid{margin-top:32px}.ms-pricing-client .ec-btn-primary,.ms-pricing-client .ec-btn-secondary,.ms-pricing-client .ec-btn-ghost{min-height:var(--ec-touch-min,44px);justify-content:center}.ms-compare-scroll{margin-left:-4px;margin-right:-4px;padding-bottom:4px}.ms-cmp-scroll{-webkit-overflow-scrolling:touch;scrollbar-width:none;margin-left:-4px;margin-right:-4px;padding-bottom:4px;overflow-x:auto}.ms-cmp-scroll::-webkit-scrollbar{display:none}.ms-cmp-scroll .ms-cmp{min-width:520px;margin-top:0}}@media (max-width:520px){.ms-cmp-hint{text-align:right;font-family:var(--font-mono);letter-spacing:.04em;color:var(--ec-text-faint);margin:16px 0 -6px;font-size:11px;display:block}.ms-price-page .ms-h2{font-size:clamp(28px,7.5vw,40px)}.ms-pricing-client .ms-price-amount{font-size:clamp(2.25rem,10vw,3.25rem)}.ms-pricing-client .ms-hot-badge{padding:2px 12px;font-size:15px;top:-12px}.ms-pricing-client .ms-price-card{padding:22px 18px}.ms-pricing-region select.ec-input{width:100%;max-width:160px}.ms-teacher-inbox-filters{-webkit-overflow-scrolling:touch;scrollbar-width:none;flex-wrap:nowrap;padding-bottom:4px;overflow-x:auto}.ms-teacher-inbox-filters::-webkit-scrollbar{display:none}.ms-teacher-inbox-filters button{white-space:nowrap;flex-shrink:0}.ms-teacher-inbox .text-headline,.ms-teacher-review-detail .text-headline{font-size:clamp(1.375rem,5vw,1.875rem)}.ms-override-console .truncate{max-width:min(100%,180px)}.ms-cmp-row>div{padding:12px 14px;font-size:13px}.ms-cmp-cell{font-size:11.5px}.ms-compare-scroll table{font-size:13px}.ms-compare-scroll th,.ms-compare-scroll td{padding-top:10px;padding-bottom:10px}}@media (max-width:900px){.ms-teacher-intervention{padding-bottom:calc(1rem + env(safe-area-inset-bottom,0px))}.ms-subjects-tabs .ms-lvl-tabs,.ms-subjects-toolbar .ms-lvl-tabs-scroll{margin-bottom:0}.ms-upgrade-sheet .ec-btn-primary,.ms-upgrade-sheet .ec-btn-secondary{min-height:var(--ec-touch-min,44px);justify-content:center}}@media (max-width:520px){.ms-teacher-dash-actions .ec-btn-primary,.ms-teacher-dash-actions .ec-btn-secondary{min-height:var(--ec-touch-min,44px)}.ms-teacher-blindspot h2{overflow-wrap:anywhere;font-size:clamp(1.375rem,5.5vw,2rem)}.ms-teacher-blindspot .ec-chip{font-size:12px}.ms-teacher-form .text-headline{font-size:clamp(1.375rem,5vw,1.875rem)}.ms-faq-accordion .landing-h3{font-size:clamp(1.125rem,4.5vw,1.375rem)}.ms-faq-accordion button span{font-size:15px;line-height:1.35}.ms-subjects-page .ms-h2{font-size:clamp(28px,7.5vw,40px)}.ms-subj-search input{min-height:var(--ec-touch-min,44px)}.ms-progress-page .ms-h2{font-size:clamp(28px,7vw,40px)}.ms-solution-section .ec-btn-secondary,.ms-solution-section .ec-btn-primary{width:100%;min-height:var(--ec-touch-min,44px);justify-content:center}.ms-solution-section h2{font-size:clamp(1.25rem,4.5vw,1.5rem)}}@media (max-width:900px){.ms-mastery-modal .ec-card{padding-bottom:calc(1rem + env(safe-area-inset-bottom,0px));max-height:min(88dvh, calc(100dvh - env(safe-area-inset-top,0px)));overflow-y:auto}.ms-mastery-matrix .ms-h3{font-size:clamp(1.125rem,4.5vw,1.375rem)}.ms-dash-card{padding:18px 16px}.ms-courses-catalog .ms-scard2 .ms-stat-row{flex-wrap:wrap;gap:6px;font-size:11px}}@media (max-width:520px){.ec-auth-shell .ec-card{padding:1.25rem 1.125rem}.ec-auth-shell .text-hero{font-size:clamp(1.5rem,6.5vw,2rem)}.ec-auth-shell .ec-input{font-size:16px}.ms-verify-digits input{width:2.5rem;min-width:2.5rem}.ec-password-toggle{right:0}.ms-mastery-matrix .truncate{overflow-wrap:anywhere;white-space:normal}.ms-mastery-matrix button .max-w-\[140px\]{max-width:none}.ms-attempts-list .ms-progress-row{padding:14px 16px}.ms-attempts-list .ec-stat-figure{font-size:1.5rem}.ms-attempts-list .flex.items-center.justify-between.gap-4{flex-wrap:wrap;gap:12px}.ms-post-mark-next .ec-card{padding:14px 16px}.ms-post-mark-next .ec-btn-primary,.ms-post-mark-next .ec-btn-secondary{min-height:var(--ec-touch-min,44px)}.ms-recent-attempts .text-title{font-size:clamp(1.125rem,4.5vw,1.375rem)}.ms-course-hero .ms-h2{font-size:clamp(28px,7.5vw,40px)}.ms-courses-catalog .ms-sname{font-size:clamp(1.125rem,4.5vw,1.35rem)}}@media (max-width:900px){.ms-marking-result .ms-examiner-note-card{padding:16px 14px}.ms-marking-result .ms-audit-head{flex-wrap:wrap;gap:6px}.ms-marking-result .ec-banner,.ms-course-studio .course-studio-topbar{flex-wrap:wrap;gap:10px}.ms-course-studio .course-studio-breadcrumb-list{max-width:100%}.ms-billing-blocked,.ms-billing-approaching{flex-wrap:wrap}}@media (max-width:520px){.ms-marking-result .ms-grade-pill{white-space:normal;font-size:15px}.ms-marking-result .ms-greennote{font-size:18px}.ms-marking-result .ms-micro{letter-spacing:.06em;font-size:10px}.ms-continue-work .text-title,.ms-active-subjects .text-title{font-size:clamp(1.125rem,4.5vw,1.375rem)}.ms-continue-drill{min-height:var(--ec-touch-min,44px)}.ms-billing-blocked .ec-link,.ms-billing-approaching .ec-link{min-height:var(--ec-touch-min,44px);align-items:center;display:inline-flex}.ms-study-notebook{padding:1rem 1.125rem}.ms-study-notebook a{min-height:var(--ec-touch-min,44px);align-items:center;display:inline-flex}.ms-content-hub{border-radius:16px;justify-content:stretch;width:100%}.ms-content-hub .ms-hub-tab{flex:auto;justify-content:center;padding:10px 12px;font-size:13px}.ms-hub-card{padding:18px 16px}.ms-hub-card .ec-btn-ghost,.ms-hub-card .ec-btn-underline{min-height:var(--ec-touch-min,44px);align-items:center;display:inline-flex}.ms-guide-card{padding:16px 14px}}@media (max-width:900px){.ms-grade-trajectory .ms-dash-card{padding:18px 16px}.ms-speed-accuracy{padding:18px 16px!important}.ms-syllabus-coverage .flex.flex-col.gap-6{gap:1.25rem}.ms-legal-page .ms-pg{padding-left:max(16px, env(safe-area-inset-left,0px));padding-right:max(16px, env(safe-area-inset-right,0px))}}@media (max-width:520px){.ms-action-plan .ms-action-cta{width:100%;min-height:var(--ec-touch-min,44px);justify-content:center}.ms-grade-trajectory .ms-h3{font-size:clamp(1.125rem,4.5vw,1.375rem)}.ms-grade-trajectory svg{min-height:200px}.ms-speed-accuracy h2{font-size:clamp(1.25rem,5vw,1.75rem)}.ms-speed-accuracy .grid.grid-cols-1{gap:12px}.ms-guest-notice{padding:14px 16px;font-size:13px;line-height:1.55}.ms-guest-notice .ec-link{min-height:0;display:inline}.ms-prefs-section .ms-pref-toggle{min-height:56px;padding:4px 0}.ms-prefs-section .ms-pref-toggle input[type=checkbox]{flex-shrink:0;width:20px;height:20px;margin-top:2px}.ms-theme-switcher{justify-content:stretch;width:100%}.ms-theme-switcher button{min-height:var(--ec-touch-min,44px);flex:50%;justify-content:center;padding-top:10px;padding-bottom:10px}.ms-syllabus-coverage .flex.items-baseline{flex-wrap:wrap;gap:8px}.ms-legal-page .ms-content-hero{padding-top:48px;padding-bottom:48px}.ms-legal-page .ms-h2{font-size:clamp(28px,7vw,40px)}.ms-legal-page article p,.ms-legal-page article li{font-size:15px;line-height:1.65}.rc-entry{border-radius:14px;padding:16px}.rc-entry-title{font-size:16px}.rc-entry-sub{font-size:12.5px;line-height:1.45}}@media (prefers-reduced-motion:reduce){.ec-page-help-strip__links a{transition:none}}.ec-back-to-top{right:calc(18px + env(safe-area-inset-right,0px));bottom:calc(18px + env(safe-area-inset-bottom,0px));z-index:var(--ec-z-sticky,50);border:1px solid var(--ec-border);background:var(--ec-surface);border-radius:999px;place-items:center;width:44px;height:44px;display:grid;position:fixed}@supports (color:color-mix(in lab, red, red)){.ec-back-to-top{background:color-mix(in srgb, var(--ec-surface) 88%, transparent)}}.ec-back-to-top{-webkit-backdrop-filter:blur(10px);color:var(--ec-text-secondary);box-shadow:var(--ec-shadow-elevation-2);cursor:pointer;opacity:0;pointer-events:none;transition:opacity .2s,transform .24s cubic-bezier(.4,0,.2,1),color .15s,border-color .15s;transform:translateY(10px)scale(.92)}.ec-back-to-top.is-visible{opacity:1;pointer-events:auto;transform:none}.ec-back-to-top:hover{color:var(--ec-brand);border-color:var(--ec-brand-border);transform:translateY(-2px)}.ec-back-to-top:focus-visible{box-shadow:var(--ec-focus-ring);outline:none}@media (prefers-reduced-motion:reduce){.ec-back-to-top{transition:none}}.ec-marketing-root:before,.course-root:before{content:"";z-index:0;pointer-events:none;background-image:var(--ec-paper-texture,none);background-size:280px 280px;position:fixed;inset:0}.ec-link-touch{position:relative}.ec-link-touch:after{content:"";position:absolute;inset:-12px -8px}[data-ec-theme=zen],[data-theme=paper]{--bg:#faf9f6;--bg-soft:#f3f1ea;--surface:#fff;--surface-2:#f6f4ee;--border:#e7e3d8;--border-strong:#25221b;--text:#25221b;--text-2:#5c5546;--muted:#8d8470;--ink:#19774d;--ink-bright:#17a86b;--green-on-tint:#145e3d;--ink-soft:#19774d0f;--ink-border:#1e8a5e61;--red:#a23e3e;--red-soft:#b0484817;--pen:#2b3a8c;--amber:#735829;--amber-soft:#c4a87833;--acc-blue:#3a5fb8;--acc-violet:#6b5b8a;--acc-teal:#1a7575;--acc-rose:#ac5276;--acc-slate:#5c6470;--paper:#fff;--paper-rule:#eae6dc;--shadow-card:0 6px 18px #5046320f;--shadow-pop:0 14px 36px #5046321f;--shadow-hard:6px 6px 0 #25221b1a;--cta-shadow:0 10px 24px #1e8a5e40;--on-ink-text:#faf9f6;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}[data-ec-theme=late-night],[data-theme=night]{--bg:#14120d;--bg-soft:#1a1711;--surface:#1e1b13;--surface-2:#242016;--border:#3a3421;--border-strong:#f0ead9;--text:#f0ead9;--text-2:#c4bba1;--muted:#837b64;--ink:#00f5a0;--ink-bright:#00f5a0;--ink-soft:#00f5a01a;--ink-border:#00f5a061;--red:#e06c6c;--red-soft:#e06c6c1f;--pen:#9eb0f5;--amber:#d9b36a;--amber-soft:#d9b36a24;--acc-blue:#8fa9f7;--acc-violet:#b5a3e8;--acc-teal:#4fd1c5;--acc-rose:#e788ad;--acc-slate:#9aa5b4;--paper:#211e14;--paper-rule:#383223;--shadow-card:0 6px 18px #0000004d;--shadow-pop:0 18px 44px #00000073;--shadow-hard:6px 6px 0 #00000073;--cta-shadow:0 10px 28px #00f5a02e;--on-ink-text:#07130d;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:var(--font-sans,"Instrument Sans"), sans-serif;text-wrap:pretty;font-size:16px;line-height:1.55}.serif{font-family:var(--font-display,"Newsreader"), serif}.hand{font-family:var(--font-caveat,"Caveat"), cursive}.mono{font-family:var(--font-mono,"IBM Plex Mono"), monospace}a{color:inherit}::selection{background:var(--ink)}@supports (color:color-mix(in lab, red, red)){::selection{background:color-mix(in srgb, var(--ink) 24%, transparent)}}.pg{max-width:1200px;margin:0 auto;padding:0 32px}.sec{padding-top:88px}.sec-tight{padding-top:56px}.overline{letter-spacing:.2em;text-transform:uppercase;color:var(--text-2);margin:0 0 16px;font-family:IBM Plex Mono,monospace;font-size:12px;font-weight:500}.h-display{letter-spacing:-.025em;margin:0;font-family:Newsreader,serif;font-size:clamp(44px,6vw,76px);font-weight:500;line-height:1.04}.h-display em{font-style:italic;font-weight:400}.h2{letter-spacing:-.02em;margin:0 0 14px;font-family:Newsreader,serif;font-size:clamp(30px,4vw,44px);font-weight:500;line-height:1.1}.h2 em{font-style:italic;font-weight:400}.h3{margin:0 0 8px;font-family:Newsreader,serif;font-size:23px;font-weight:500;line-height:1.2}.lead{color:var(--text-2);max-width:56ch;margin:0;font-size:18px;line-height:1.65}.body-2{color:var(--text-2);margin:0;font-size:15px;line-height:1.6}.micro{letter-spacing:.08em;color:var(--text-2);font-family:IBM Plex Mono,monospace;font-size:11.5px}.nav{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;max-width:1200px;margin:0 auto;padding:20px 32px;display:flex}.nav-wrap{z-index:50;background:var(--bg);position:sticky;top:0}@supports (color:color-mix(in lab, red, red)){.nav-wrap{background:color-mix(in srgb, var(--bg) 88%, transparent)}}.nav-wrap{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}@supports (color:color-mix(in lab, red, red)){.nav-wrap{border-bottom:1px solid color-mix(in srgb, var(--border) 70%, transparent)}}.wordmark{letter-spacing:-.02em;color:var(--text);cursor:pointer;background:0 0;border:none;padding:0;font-family:Newsreader,serif;font-size:23px;font-weight:600;text-decoration:none}.wordmark i{color:var(--ink);font-style:normal}.nav-links{align-items:center;gap:26px;display:flex}.nav-link{color:var(--text);cursor:pointer;background:0 0;border:none;border-bottom:1.5px solid #0000;padding:2px 0;font-family:Newsreader,serif;font-size:16.5px;text-decoration:none}.nav-link:hover{color:var(--ink)}.nav-link.active{border-bottom-color:var(--ink);color:var(--ink)}.nav-right{align-items:center;gap:18px;display:flex}.theme-flip{border:1px solid var(--border);cursor:pointer;width:36px;height:36px;color:var(--text-2);background:0 0;border-radius:999px;place-items:center;font-size:15px;display:grid}.theme-flip:hover{border-color:var(--ink);color:var(--ink)}.btn-primary{background:var(--ink);color:var(--bg);cursor:pointer;box-shadow:var(--cta-shadow);white-space:nowrap;border:none;border-radius:999px;align-items:center;gap:8px;padding:14px 28px;font-family:Instrument Sans,sans-serif;font-size:16px;font-weight:600;text-decoration:none;transition:transform .15s,box-shadow .15s;display:inline-flex}[data-theme=night] .btn-primary{color:#07130d}.btn-primary:hover{transform:translateY(-1px)}.btn-primary:active{transform:scale(.97)translateY(1px)}.btn-primary.sm{box-shadow:none;padding:9px 20px;font-size:14.5px}.btn-block{justify-content:center;width:100%;display:inline-flex}.btn-block-gap{margin-top:10px}.btn-ghost{color:var(--text);border:1.5px solid var(--border-strong);cursor:pointer;white-space:nowrap;background:0 0;border-radius:999px;align-items:center;gap:8px;padding:13px 26px;font-family:Instrument Sans,sans-serif;font-size:16px;font-weight:500;text-decoration:none;transition:transform .15s,background .15s,box-shadow .15s;display:inline-flex}.btn-ghost:hover{background:var(--surface)}.btn-ghost:active{transform:scale(.97)}.btn-ghost.sm{padding:8px 18px;font-size:14.5px}.btn-underline{color:var(--text);cursor:pointer;border:none;border-bottom:1.5px solid var(--ink);background:0 0;padding:0 0 2px;font-family:Newsreader,serif;font-size:17px;text-decoration:none}.btn-underline:hover{color:var(--ink)}.card{background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-card);border-radius:14px}.card-pad{padding:24px 26px}.chip{border-radius:999px;align-items:center;gap:6px;padding:4px 12px;font-family:IBM Plex Mono,monospace;font-size:12px;font-weight:600;display:inline-flex}.chip.ok{color:var(--ink);background:var(--ink-soft)}.chip.no{color:var(--red);background:var(--red-soft)}.chip.warn{color:var(--amber);background:var(--amber-soft)}.chip.dim{color:var(--text-2);background:var(--bg-soft)}.chip.outline{border:1px solid var(--border);color:var(--text-2);background:0 0}.sheet{background:var(--paper);border:1.5px solid var(--border-strong);box-shadow:var(--shadow-hard);border-radius:2px;padding:24px 26px 18px;position:relative}.sheet-head{color:var(--text-2);border-bottom:1px solid var(--paper-rule);justify-content:space-between;gap:12px;margin-bottom:4px;padding-bottom:9px;font-family:IBM Plex Mono,monospace;font-size:11.5px;display:flex}.sheet-line{border-bottom:1px solid var(--paper-rule);justify-content:space-between;align-items:baseline;gap:12px;padding:8px 0 7px;display:flex;position:relative}.sheet-line .work{color:var(--pen);font-family:Caveat,cursive;font-size:23px;line-height:1.26}.stamp{white-space:nowrap;border-radius:999px;flex-shrink:0;padding:2px 9px;font-family:IBM Plex Mono,monospace;font-size:12.5px;font-weight:700;transform:rotate(-3deg)}.stamp.ok{color:var(--ink);border:2px solid var(--ink-border);background:var(--ink-soft)}.stamp.no{color:var(--red);border:2px solid var(--red)}@supports (color:color-mix(in lab, red, red)){.stamp.no{border:2px solid color-mix(in srgb, var(--red) 55%, transparent)}}.stamp.no{background:var(--red-soft)}.rednote{color:var(--red);margin-top:4px;font-family:Caveat,cursive;font-size:19px;display:block;transform:rotate(-1.5deg)}.greennote{color:var(--ink);margin-top:4px;font-family:Caveat,cursive;font-size:19px;display:block}.tally{background:var(--ink);color:var(--bg);padding:9px 13px;font-family:IBM Plex Mono,monospace;font-size:14px;font-weight:700;position:absolute;top:-16px;right:-14px;transform:rotate(4deg);box-shadow:3px 3px #00000038}[data-theme=night] .tally{color:#07130d}.scheme-cite{color:var(--text-2);background:var(--bg-soft);border:1px dashed var(--border);margin-top:12px;padding:9px 11px;font-family:IBM Plex Mono,monospace;font-size:11px;line-height:1.5}.circled{display:inline-block;position:relative}.circled svg{pointer-events:none;width:calc(100% + 40px);height:calc(100% + 24px);position:absolute;inset:-12px -20px;overflow:visible}.scribbled{display:inline-block;position:relative}.scribbled svg{pointer-events:none;width:calc(100% + 8px);height:14px;position:absolute;bottom:-9px;left:-4px;right:-4px;overflow:visible}.no-annot .circled svg,.no-annot .scribbled svg,.no-annot .margin-note{display:none!important}.margin-note{color:var(--ink);text-align:left;font-family:Caveat,cursive;font-size:22px;line-height:1.15;position:absolute;transform:rotate(-5deg)}.field{flex-direction:column;gap:6px;display:flex}.field label{color:var(--text-2);font-size:13.5px;font-weight:600}.input,.select{background:var(--surface);border:1px solid var(--border);color:var(--text);border-radius:10px;outline:none;width:100%;padding:11px 14px;font-family:Instrument Sans,sans-serif;font-size:15px}.input:focus,.select:focus{border-color:var(--ink);box-shadow:0 0 0 3px var(--ink-soft)}.footer{border-top:1px solid var(--border);background:var(--bg-soft);margin-top:110px}.footer-inner{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;max-width:1200px;margin:0 auto;padding:48px 32px 36px;display:grid}.footer h4{letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin:0 0 14px;font-family:IBM Plex Mono,monospace;font-size:11.5px;font-weight:500}.footer-col{flex-direction:column;gap:9px;display:flex}.footer-col a,.footer-col button{color:var(--text-2);cursor:pointer;text-align:left;background:0 0;border:none;padding:0;font-family:Instrument Sans,sans-serif;font-size:14.5px;text-decoration:none}.footer-col a:hover,.footer-col button:hover{color:var(--ink)}.footer-legal{max-width:1200px;color:var(--muted);flex-wrap:wrap;justify-content:space-between;gap:16px;margin:0 auto;padding:0 32px 28px;font-size:12.5px;display:flex}.footer-legal-links{border-bottom:1px solid var(--line,#7f7f7f33);flex-wrap:wrap;flex-basis:100%;gap:16px;margin-bottom:4px;padding-bottom:14px;display:flex}.footer-legal-links a{color:var(--text-2,inherit);font-weight:600;text-decoration:none}.footer-legal-links a:hover{color:var(--brand,currentColor)}.footer-wordmark{margin-bottom:12px;display:inline-block}.footer-tagline{max-width:34ch;margin:0}.footer-coming{margin-top:16px}.fade-in{animation:.4s cubic-bezier(.4,0,.2,1) backwards msfade}@keyframes msfade{0%{transform:translateY(10px)}to{transform:translateY(0)}}.stag-1{animation-delay:50ms}.stag-2{animation-delay:.11s}.stag-3{animation-delay:.17s}.stag-4{animation-delay:.23s}.stag-5{animation-delay:.29s}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}.cmdk-btn{background:var(--surface);border:1px solid var(--border);color:var(--muted);cursor:pointer;border-radius:999px;align-items:center;gap:7px;padding:7px 13px;font-family:Instrument Sans,sans-serif;font-size:13.5px;display:inline-flex}.cmdk-btn:hover{border-color:var(--ink);color:var(--text-2)}.cmdk-btn kbd{background:var(--bg-soft);border:1px solid var(--border);border-radius:5px;padding:1px 5px;font-family:IBM Plex Mono,monospace;font-size:10.5px}.cmdk-btn span{letter-spacing:.04em;font-family:IBM Plex Mono,monospace;font-size:11px}.nav-link.signin{color:var(--text-2);font-family:Instrument Sans,sans-serif;font-size:14.5px}.nav-avatar{background:var(--ink-soft);width:36px;height:36px;color:var(--ink);border:1px solid var(--ink-border);border-radius:999px;flex-shrink:0;place-items:center;font-family:IBM Plex Mono,monospace;font-size:13px;font-weight:600;text-decoration:none;display:grid}.nav-avatar:hover{background:var(--ink);color:var(--bg);border-color:var(--ink)}[data-theme=night] .nav-avatar:hover{color:#07130d}.burger{border:1px solid var(--border);cursor:pointer;width:38px;height:38px;color:var(--text);background:0 0;border-radius:9px;font-size:16px;display:none}.crumb{letter-spacing:.04em;flex-wrap:wrap;align-items:center;gap:10px;padding:22px 0 4px;font-family:IBM Plex Mono,monospace;font-size:12px;display:flex}.crumb-link{cursor:pointer;color:var(--muted);font:inherit;background:0 0;border:none;padding:0}.crumb-link:hover{color:var(--ink)}.crumb-cur{color:var(--text-2)}.crumb-sep{color:var(--border-strong);opacity:.4}.ring{flex-shrink:0;place-items:center;display:inline-grid;position:relative}.ring svg{display:block}.ring-label{color:var(--text);font-family:IBM Plex Mono,monospace;font-size:11px;font-weight:700;position:absolute}.catalog-page{padding-bottom:40px}.catalog-hero{grid-template-columns:1.5fr 1fr;align-items:end;gap:40px;padding-top:48px;padding-bottom:8px;display:grid}.catalog-hero-text .h-display{margin-top:6px}.catalog-hero-meta{border:1px solid var(--border);background:var(--surface);box-shadow:var(--shadow-card);border-radius:14px;grid-template-columns:1fr 1fr 1fr;gap:0;display:grid;position:relative;overflow:hidden}.hero-stat{text-align:center;border-right:1px solid var(--border);padding:18px 14px}.hero-stat:last-child{border-right:none}.hero-stat b{color:var(--ink);font-family:Newsreader,serif;font-size:30px;font-weight:500;line-height:1;display:block}.hero-stat span{letter-spacing:.06em;color:var(--muted);text-transform:uppercase;margin-top:6px;font-family:IBM Plex Mono,monospace;font-size:10.5px;display:block}.continue{cursor:pointer;border-left:3px solid var(--ink);align-items:center;gap:22px;margin:34px 0 30px;padding:20px 24px;transition:transform .16s,box-shadow .16s;display:flex}.continue:hover{box-shadow:var(--shadow-pop);transform:translateY(-2px)}.continue-body{flex:1}.continue-cta{flex-shrink:0}.catalog-bar{border-bottom:1px solid var(--border);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin-bottom:22px;padding-bottom:14px;display:flex}.fam-tabs{flex-wrap:wrap;gap:6px;display:flex}.fam-tab{color:var(--text-2);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:999px;padding:7px 16px;font-family:Instrument Sans,sans-serif;font-size:14px;font-weight:500;transition:color .14s,background .14s,border-color .14s}.fam-tab:hover{color:var(--ink)}.fam-tab.on{background:var(--ink-soft);color:var(--green-on-tint,var(--ink));border-color:var(--ink-border)}.catalog-grid{grid-template-columns:repeat(auto-fill,minmax(248px,1fr));gap:18px;display:grid}.scard{--acc:var(--ink);text-align:left;background:var(--surface);border:1px solid var(--border);cursor:pointer;box-shadow:var(--shadow-card);color:inherit;border-radius:14px;flex-direction:column;padding:0;font-family:inherit;transition:transform .17s cubic-bezier(.4,0,.2,1),box-shadow .17s,border-color .17s;display:flex;position:relative;overflow:hidden}.scard:hover{box-shadow:var(--shadow-pop);border-color:var(--acc);transform:translateY(-4px)}@supports (color:color-mix(in lab, red, red)){.scard:hover{border-color:color-mix(in srgb, var(--acc) 40%, var(--border))}}.scard-top{background:radial-gradient(130% 100% at 10% 0%, #fff3, transparent 58%), linear-gradient(135deg, var(--acc) 0%, var(--acc) 100%);justify-content:space-between;align-items:flex-start;gap:10px;min-height:116px;padding:22px 18px 18px;display:flex}@supports (color:color-mix(in lab, red, red)){.scard-top{background:radial-gradient(130% 100% at 10% 0%, #fff3, transparent 58%), linear-gradient(135deg, color-mix(in srgb, var(--acc) 94%, #fff) 0%, color-mix(in srgb, var(--acc) 76%, #221d14) 100%)}}.scard-top{border-bottom:1px solid var(--acc)}@supports (color:color-mix(in lab, red, red)){.scard-top{border-bottom:1px solid color-mix(in srgb, var(--acc) 45%, var(--border))}}.scard-top{position:relative;overflow:hidden;box-shadow:inset 0 1px #ffffff2e}.scard-watermark{color:#fff;opacity:.18;pointer-events:none;z-index:0;font-family:Newsreader,serif;font-size:128px;line-height:1;transition:transform .26s cubic-bezier(.4,0,.2,1);position:absolute;bottom:-30px;right:-12px}.scard:hover .scard-watermark{transform:scale(1.1)rotate(-5deg)}.scard-top:after{content:"";z-index:2;pointer-events:none;background:linear-gradient(100deg,#0000,#ffffff38,#0000);width:55%;transition:transform .7s cubic-bezier(.4,0,.2,1);position:absolute;top:0;bottom:0;left:-55%;transform:skew(-18deg)translate(-40%)}.scard:hover .scard-top:after{transform:skew(-18deg)translate(340%)}@media (prefers-reduced-motion:reduce){.scard-top:after{display:none}}.scard-glyph{z-index:1;background:var(--surface);width:60px;height:60px;color:var(--acc);box-shadow:0 8px 22px #0000003d, inset 0 0 0 1px var(--acc);border-radius:16px;place-items:center;font-family:Newsreader,serif;font-size:32px;font-weight:600;line-height:1;display:grid;position:relative}@supports (color:color-mix(in lab, red, red)){.scard-glyph{box-shadow:0 8px 22px #0000003d, inset 0 0 0 1px color-mix(in srgb, var(--acc) 16%, transparent)}}.scard-tab{z-index:1;letter-spacing:.08em;color:#fff;opacity:.92;font-family:IBM Plex Mono,monospace;font-size:11px;font-weight:600;position:absolute;top:16px;left:50%;transform:translate(-50%)}.scard-new{z-index:2;letter-spacing:.06em;text-transform:uppercase;color:#fff;background:#00000047;border:1px solid #ffffff59;border-radius:999px;padding:3px 8px;font-family:IBM Plex Mono,monospace;font-size:10px;font-weight:700;position:absolute;top:14px;right:14px}.scard-top>svg,.scard-top>.stamp-free{z-index:1;position:relative}.stamp-free{text-align:center;color:#fff;letter-spacing:.07em;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);background:#ffffff24;border:1px solid #ffffff80;border-radius:8px;padding:4px 8px;font-family:IBM Plex Mono,monospace;font-size:9px;font-weight:700;line-height:1.3}.scard-body{flex:1;padding:14px 18px 4px}.scard-name{letter-spacing:-.01em;margin:0 0 4px;font-family:Newsreader,serif;font-size:22px;font-weight:500}.scard-meta{color:var(--muted);letter-spacing:.03em;margin:0 0 8px;font-family:IBM Plex Mono,monospace;font-size:11px}.scard-stat{color:var(--text-2);margin:0;font-size:13px}.scard-foot{align-items:center;gap:12px;padding:14px 18px 16px;display:flex}.scard-rule{background:var(--border);flex:1;height:1px}.scard-go{color:var(--acc);letter-spacing:.03em;white-space:nowrap;font-family:IBM Plex Mono,monospace;font-size:11.5px;font-weight:600}.catalog-footnote{text-align:center;border-top:1px dashed var(--border);margin-top:36px;padding-top:24px}.catalog-ib-section{border-top:1px solid var(--border);margin-top:48px;padding-top:36px}.catalog-ib-title{margin:0 0 8px}.catalog-ib-lead{color:var(--text-2);max-width:52ch;margin:0 0 28px}.catalog-ib-track{margin-bottom:32px}.catalog-ib-track:last-child{margin-bottom:0}.catalog-ib-track-label{color:var(--muted);margin:0 0 14px}.hub-hero{background:var(--bg-soft);border-top:1px solid var(--border);border-bottom:1px solid var(--border);margin-top:8px;padding:38px 0}.hub-hero-inner{grid-template-columns:1.55fr 1fr;align-items:center;gap:40px;display:grid}.hub-hero-left{align-items:flex-start;gap:26px;display:flex}.hub-glyph{color:var(--hub-acc,var(--acc-violet));flex-shrink:0;font-family:Newsreader,serif;font-size:92px;font-weight:500;line-height:.8}.hub-cta-row{flex-wrap:wrap;align-items:center;gap:14px;margin-top:22px;display:flex}.hub-hero-right{padding:22px 24px}.hub-prog{align-items:center;gap:18px;margin:12px 0 16px;display:flex}.hub-streak{border-top:1px solid var(--border);align-items:center;gap:10px;padding-top:14px;display:flex}.flame{font-size:18px}.hub-body{padding-top:36px}.paper-tabs{grid-template-columns:repeat(5,1fr);gap:10px;margin-bottom:30px;display:grid}.paper-tab{text-align:left;background:var(--surface);border:1px solid var(--border);cursor:pointer;color:inherit;border-radius:12px;flex-direction:column;gap:3px;padding:13px 15px;font-family:inherit;transition:border-color .15s,transform .15s;display:flex}.paper-tab:hover{border-color:var(--ink-border);transform:translateY(-2px)}.paper-tab.on{border-color:var(--hub-acc,var(--acc-violet));background:var(--hub-acc,var(--acc-violet))}@supports (color:color-mix(in lab, red, red)){.paper-tab.on{background:color-mix(in srgb, var(--hub-acc,var(--acc-violet)) 9%, var(--surface))}}.paper-tab.on{box-shadow:0 0 0 1px var(--hub-acc,var(--acc-violet))}.paper-tab.has-progress:not(.on){border-color:var(--hub-acc,var(--acc-violet))}@supports (color:color-mix(in lab, red, red)){.paper-tab.has-progress:not(.on){border-color:color-mix(in srgb, var(--hub-acc,var(--acc-violet)) 28%, var(--border))}}.paper-tab-id{letter-spacing:.1em;color:var(--hub-acc,var(--acc-violet));font-size:10.5px;font-weight:600}.paper-tab-name{color:var(--text);font-family:Newsreader,serif;font-size:15.5px;line-height:1.15}.paper-tab-meta{color:var(--text-2);font-family:IBM Plex Mono,monospace;font-size:10.5px}.hub-cols{grid-template-columns:1fr 320px;align-items:start;gap:40px;display:grid}.spine{position:relative}.spine:before{content:"";background:var(--border);width:2px;position:absolute;top:8px;bottom:8px;left:6px}.spine-unit{margin-bottom:26px;position:relative}.spine-unit-head{align-items:center;gap:14px;margin-bottom:12px;display:flex}.spine-node{background:var(--surface);border:2.5px solid var(--hub-acc,var(--acc-violet));z-index:1;border-radius:50%;flex-shrink:0;width:14px;height:14px}.spine-unit-title{letter-spacing:-.01em;margin:0;font-family:Newsreader,serif;font-size:19px;font-weight:500}.spine-topics{flex-direction:column;gap:7px;margin-left:30px;display:flex}.topic-row{background:var(--surface);border:1px solid var(--border);cursor:pointer;color:inherit;text-align:left;border-radius:11px;align-items:center;gap:13px;padding:12px 16px;font-family:inherit;transition:transform .14s,border-color .14s,background .14s;display:flex}.topic-row:hover{border-color:var(--ink-border);transform:translate(3px)}.topic-check{border:1.5px solid var(--border-strong);width:22px;height:22px;color:var(--muted);border-radius:50%;flex-shrink:0;place-items:center;font-size:12px;display:grid}.topic-check.on{background:var(--ink);border-color:var(--ink);color:var(--bg)}[data-theme=night] .topic-check.on{color:#07130d}.topic-check.cur{border-color:var(--hub-acc,var(--acc-violet));color:var(--hub-acc,var(--acc-violet))}.topic-name{flex:1;font-size:15px}.topic-row.done .topic-name{color:var(--text-2)}.topic-n{color:var(--muted);font-family:IBM Plex Mono,monospace;font-size:12px}.topic-flag{letter-spacing:.08em;color:var(--hub-acc,var(--acc-violet));background:var(--hub-acc,var(--acc-violet));font-size:9.5px;font-weight:700}@supports (color:color-mix(in lab, red, red)){.topic-flag{background:color-mix(in srgb, var(--hub-acc,var(--acc-violet)) 14%, transparent)}}.topic-flag{border-radius:999px;padding:3px 8px}.topic-interactive{letter-spacing:.06em;color:var(--ink);background:var(--ink-soft);border:1px solid var(--ink-border);border-radius:999px;flex-shrink:0;padding:2px 7px;font-size:9px;font-weight:700}@media (max-width:560px){.topic-interactive{display:none}}.topic-arrow{color:var(--muted);opacity:0;transition:opacity .14s}.topic-row:hover .topic-arrow{opacity:1}.topic-row.active{border-color:var(--hub-acc,var(--acc-violet));background:var(--hub-acc,var(--acc-violet))}@supports (color:color-mix(in lab, red, red)){.topic-row.active{background:color-mix(in srgb, var(--hub-acc,var(--acc-violet)) 8%, var(--surface))}}.topic-row.active{box-shadow:0 0 0 1px var(--hub-acc,var(--acc-violet))}.spine-empty{margin-left:30px}.hub-aside{flex-direction:column;gap:18px;display:flex;position:sticky;top:90px}.how-grid{flex-direction:column;gap:16px;display:flex}.how-card{grid-template-columns:28px 1fr;align-items:start;gap:12px;display:grid}.how-num{background:var(--ink-soft);width:26px;height:26px;color:var(--ink);border-radius:50%;place-items:center;font-size:12px;font-weight:700;display:grid}.how-t{margin:1px 0 3px;font-family:Newsreader,serif;font-size:16px;font-weight:500}.hub-tip{border-left:3px solid var(--ink)}.diagram-wrap--loading{background:linear-gradient(90deg, var(--surface) 25%, var(--surface) 50%, var(--surface) 75%);border-radius:16px;min-height:220px}@supports (color:color-mix(in lab, red, red)){.diagram-wrap--loading{background:linear-gradient(90deg, color-mix(in srgb, var(--surface) 92%, var(--border)) 25%, color-mix(in srgb, var(--surface) 98%, var(--border)) 50%, color-mix(in srgb, var(--surface) 92%, var(--border)) 75%)}}.diagram-wrap--loading{border:1px solid var(--border);background-size:200% 100%;animation:1.2s ease-in-out infinite diagram-shimmer}@keyframes diagram-shimmer{0%{background-position:100% 0}to{background-position:-100% 0}}.diagram-wrap{background:var(--paper);border:1.5px solid var(--border-strong);box-shadow:var(--shadow-hard);border-radius:4px;width:100%;max-width:100%;overflow:hidden}.diagram-head{border-bottom:1px solid var(--paper-rule);align-items:center;gap:12px;padding:12px 16px;display:flex}.diagram-step-label{color:var(--text-2);flex:1;font-size:11px}.diagram-play{background:var(--ink-soft);border:1px solid var(--ink-border);color:var(--ink);cursor:pointer;border-radius:999px;padding:5px 14px;font-family:IBM Plex Mono,monospace;font-size:12px}.diagram-play:hover{background:var(--ink);color:var(--bg)}[data-theme=night] .diagram-play:hover{color:#07130d}.diagram-svg{background:var(--paper);width:100%;height:auto;display:block}.diagram-embed{border-bottom:1px solid var(--paper-rule);background:linear-gradient(180deg, var(--ink-soft) 0%, var(--paper) 100%);max-width:100%;padding:0;overflow:hidden}.diagram-embed .course-interactive-embed{box-shadow:none;border:none;border-radius:0;max-width:100%;margin:0}.diagram-stage{background:var(--paper);border-top:1px solid var(--paper-rule);padding:0}.diagram-stage-caption{color:var(--text-2);border-top:1px dashed var(--paper-rule);background:var(--bg-soft);margin:0;padding:12px 16px 14px;font-size:14px;line-height:1.55}.diagram-stage--explorable{padding:0}.diagram-explorable-loading{background:repeating-linear-gradient(135deg, var(--paper) 0 12px, var(--bg-soft) 12px 24px);opacity:.5;min-height:320px}.qex{--qex-acc:var(--acc-lesson,var(--ink));grid-template-columns:1.25fr 1fr;gap:0;display:grid}.qex-stagewrap{border-right:1px solid var(--paper-rule);min-width:0;padding:8px 8px 4px;position:relative}.qex-svg{touch-action:none;width:100%;height:auto;display:block}.qex-grid{stroke:var(--paper-rule);stroke-width:1px;opacity:.6}.qex-axis{stroke:var(--border-strong);stroke-width:1.4px}.qex-symmetry{stroke:var(--muted);stroke-width:1.2px;stroke-dasharray:4 5;opacity:.5;transition:opacity .2s,stroke .2s}.qex-symmetry.hot{stroke:var(--qex-acc);opacity:.9}.qex-curve{stroke:var(--qex-acc);stroke-width:3px;stroke-linecap:round;stroke-linejoin:round}.qex-yint{fill:var(--surface);stroke:var(--muted);stroke-width:1.5px}.qex-root circle{fill:var(--paper);stroke:var(--qex-acc);stroke-width:2.5px;transition:r .16s}.qex-root-drop{stroke:var(--qex-acc);stroke-width:1.2px;stroke-dasharray:2 4;opacity:.45}.qex-root.hot circle{fill:var(--qex-acc)}.qex-vertex{transition:filter .2s}.qex-vertex-halo{fill:var(--qex-acc);opacity:.12;transition:opacity .18s}.qex-vertex.hot .qex-vertex-halo,.qex-vertex.grab .qex-vertex-halo{opacity:.26}.qex-vertex-dot{fill:var(--qex-acc);stroke:var(--paper);stroke-width:2.5px}.qex-draghint{text-align:center;color:var(--muted);margin:2px 0 6px}.qex-panel{background:var(--bg-soft);flex-direction:column;gap:14px;min-width:0;padding:16px 16px 18px;display:flex}.qex-eq{flex-direction:column;gap:8px;display:flex}.qex-eq-row{color:var(--text);flex-wrap:wrap;align-items:center;gap:8px;font-size:16px;display:flex}.qex-eq-tag{letter-spacing:.08em;color:var(--text-2);background:var(--bg-soft);border:1px solid var(--border-strong);border-radius:4px;flex-shrink:0;padding:3px 7px;font-size:10px;font-weight:600}.qex-disc{border:1.5px solid var(--border);background:var(--surface);border-radius:10px;flex-direction:column;gap:2px;padding:10px 14px;transition:box-shadow .2s,border-color .2s;display:flex}.qex-disc.hot{box-shadow:0 0 0 3px var(--ink-soft)}.qex-disc-val{color:var(--text-2);font-size:13px}.qex-disc-label{font-size:15px;font-weight:600}.qex-disc.tone-pos{border-color:var(--ink)}@supports (color:color-mix(in lab, red, red)){.qex-disc.tone-pos{border-color:color-mix(in srgb, var(--ink) 55%, transparent)}}.qex-disc.tone-pos .qex-disc-label{color:var(--ink)}.qex-disc.tone-mid{border-color:var(--amber,#b8860b)}@supports (color:color-mix(in lab, red, red)){.qex-disc.tone-mid{border-color:color-mix(in srgb, var(--amber,#b8860b) 55%, transparent)}}.qex-disc.tone-mid .qex-disc-label{color:var(--amber,#b8860b)}.qex-disc.tone-neg{border-color:var(--red,#b3261e)}@supports (color:color-mix(in lab, red, red)){.qex-disc.tone-neg{border-color:color-mix(in srgb, var(--red,#b3261e) 50%, transparent)}}.qex-disc.tone-neg .qex-disc-label{color:var(--red,#b3261e)}.qex-readout{grid-template-columns:1fr 1fr;gap:8px 14px;margin:0;display:grid}.qex-readout>div{flex-direction:column;gap:1px;display:flex}.qex-readout dt{letter-spacing:.03em;text-transform:uppercase;color:var(--muted);font-size:11px}.qex-readout dd{color:var(--text);margin:0;font-size:14.5px}.qex-controls{border-top:1px dashed var(--paper-rule);flex-direction:column;gap:10px;padding-top:4px;display:flex}.qex-slider{flex-direction:column;gap:4px;display:flex}.qex-slider-head{justify-content:space-between;align-items:baseline;display:flex}.qex-slider-label{color:var(--qex-acc);font-size:13px;font-weight:600}.qex-slider-val{color:var(--text-2);font-size:13px}.qex-slider input[type=range]{width:100%;accent-color:var(--qex-acc);cursor:pointer;height:22px}.qex-reset{border:1px solid var(--border-strong);color:var(--text-2);cursor:pointer;background:0 0;border-radius:8px;align-self:flex-start;margin-top:2px;padding:6px 14px;font-family:inherit;font-size:13px;font-weight:600;transition:border-color .15s,color .15s}.qex-reset:hover{border-color:var(--ink);color:var(--ink)}.qex-time-head{align-items:center;gap:8px;display:inline-flex}.qex-playbtn{border:1px solid var(--ink-border);background:var(--ink-soft);width:24px;height:24px;color:var(--ink);cursor:pointer;border-radius:6px;flex-shrink:0;place-items:center;padding:0;font-size:10px;line-height:1;display:grid}.qex-playbtn:hover{background:var(--ink);color:var(--bg)}[data-theme=night] .qex-playbtn:hover{color:#07130d}@media (max-width:720px){.qex{grid-template-columns:1fr}.qex-stagewrap{border-right:none;border-bottom:1px solid var(--paper-rule)}}.qex-readout .rd-hot dt{color:var(--ink)}.qex-readout .rd-hot dd{color:var(--ink);font-weight:600}.trig-circle{stroke:var(--border-strong);stroke-width:1.4px}.trig-radius{stroke:var(--muted);stroke-width:1.5px}.trig-sin{stroke:var(--ink);stroke-width:2.5px;opacity:.5;transition:opacity .18s,stroke-width .18s}.trig-sin.hot{opacity:1;stroke-width:4px}.trig-cos{stroke:var(--acc-blue,#2f6db0);stroke-width:2.5px;opacity:.5;transition:opacity .18s,stroke-width .18s}.trig-cos.hot{opacity:1;stroke-width:4px}.trig-ghost{stroke:var(--border-strong);stroke-width:1px;opacity:.32;stroke-dasharray:3 4}.trig-connector{stroke:var(--muted);stroke-width:1px;stroke-dasharray:2 4;opacity:.5}.trig-wavehead{fill:var(--ink);stroke:var(--paper);stroke-width:2px}.trig-presets{flex-wrap:wrap;gap:6px;display:flex}.trig-preset{background:var(--surface);border:1px solid var(--border-strong);color:var(--text-2);cursor:pointer;border-radius:7px;padding:4px 9px;font-family:IBM Plex Mono,monospace;font-size:12px}.trig-preset:hover{border-color:var(--ink);color:var(--ink)}.diff-tangent{stroke:var(--ink);stroke-width:2.5px;opacity:.7;transition:opacity .18s,stroke-width .18s}.diff-tangent.hot{opacity:1;stroke-width:3px}.diff-secant{stroke:var(--acc-rose,#b0506b);stroke-width:2px;stroke-dasharray:5 4}.diff-grad{stroke:var(--acc-violet,#6b4fb0);stroke-width:2px;opacity:.75;stroke-dasharray:6 4}.diff-pt2 circle{fill:var(--acc-rose,#b0506b)}.diff-drop{stroke:var(--acc-rose,#b0506b);stroke-width:1px;stroke-dasharray:2 3;opacity:.5}.diff-label{fill:var(--text-2)}.diff-note{color:var(--text-2);margin:4px 0 0;font-size:13px;line-height:1.45}.norm-shade{fill:var(--ink)}@supports (color:color-mix(in lab, red, red)){.norm-shade{fill:color-mix(in srgb, var(--ink) 22%, transparent)}}.norm-shade{stroke:none}.norm-mean{stroke:var(--muted);stroke-width:1.5px;stroke-dasharray:4 4}.norm-handle-line{stroke:var(--ink);stroke-width:1.5px;opacity:.7}.norm-handle-grip{fill:var(--ink)}.norm-handle-label{fill:var(--bg);text-anchor:middle;font-size:10px}[data-theme=night] .norm-handle-label{fill:#07130d}.circ-outline{stroke:var(--border-strong);stroke-width:1.4px}.circ-sector{fill:var(--ink)}@supports (color:color-mix(in lab, red, red)){.circ-sector{fill:color-mix(in srgb, var(--ink) 14%, transparent)}}.circ-sector{stroke:none;transition:fill .18s}.circ-sector.hot{fill:var(--ink)}@supports (color:color-mix(in lab, red, red)){.circ-sector.hot{fill:color-mix(in srgb, var(--ink) 26%, transparent)}}.circ-radius{stroke:var(--muted);stroke-width:1.5px}.circ-arc{stroke:var(--ink);stroke-width:3px;opacity:.6;transition:opacity .18s,stroke-width .18s}.circ-arc.hot{opacity:1;stroke-width:5px}.circ-theta{fill:var(--text-2)}.circ-centre{fill:var(--ink)}.circ-formula{color:var(--text);border:1px solid var(--border);background:var(--surface);border-radius:8px;padding:9px 13px;font-size:16px;transition:box-shadow .18s,border-color .18s}.circ-formula.hot{border-color:var(--ink-border);box-shadow:0 0 0 2px var(--ink-soft)}.proj-guide{stroke:var(--muted);stroke-width:1.2px;stroke-dasharray:4 4;opacity:.5;transition:opacity .18s,stroke .18s}.proj-guide.hot{stroke:var(--ink);opacity:.9}.proj-ball{fill:var(--ink);stroke:var(--paper);stroke-width:2px}.proj-vector{stroke:var(--acc-rose,#b0506b);stroke-width:2px}.proj-arrowhead{fill:var(--acc-rose,#b0506b)}.shm-eq{stroke:var(--muted);stroke-width:1.2px;stroke-dasharray:3 3}.shm-amp{stroke:var(--border-strong);stroke-width:1.4px}.shm-mass{fill:var(--ink);stroke:var(--paper);stroke-width:2.5px}.shm-head{fill:var(--ink);stroke:var(--paper);stroke-width:2px}.shm-track-label{fill:var(--muted);font-size:11px}.shm-vec.vel,.shm-arrow.vel{stroke:var(--acc-blue,#2f6db0);fill:var(--acc-blue,#2f6db0);stroke-width:2.5px}.shm-vec.acc,.shm-arrow.acc{stroke:var(--acc-rose,#b0506b);fill:var(--acc-rose,#b0506b);stroke-width:2.5px}.wave-particle{fill:var(--acc-rose,#b0506b);stroke:var(--paper);stroke-width:2px}.wave-particle-line{stroke:var(--acc-rose,#b0506b);stroke-width:1px;stroke-dasharray:2 3;opacity:.5}.wave-lambda line{stroke:var(--muted);stroke-width:1.2px;transition:stroke .18s}.wave-lambda.hot line{stroke:var(--ink)}.wave-label{fill:var(--text-2)}.wave-tick{stroke:var(--muted);stroke-width:1.2px}.coord-line{stroke:var(--ink);stroke-width:2px;opacity:.55}.coord-seg{stroke:var(--ink);stroke-width:3px;transition:stroke-width .18s}.coord-seg.hot{stroke-width:4px}.coord-run{stroke:var(--acc-blue,#2f6db0);stroke-width:2px;stroke-dasharray:4 3}.coord-rise{stroke:var(--acc-rose,#b0506b);stroke-width:2px;stroke-dasharray:4 3}.coord-mid{fill:var(--acc-violet,#6b4fb0);stroke:var(--paper);stroke-width:2px}.coord-label{fill:var(--text-2);font-size:11px}.vec-a{stroke:var(--ink);stroke-width:2.5px}.vec-a-head{fill:var(--ink)}.vec-b{stroke:var(--acc-blue,#2f6db0);stroke-width:2.5px}.vec-b-head{fill:var(--acc-blue,#2f6db0)}.vec-r{stroke:var(--acc-rose,#b0506b);stroke-width:3px}.vec-r-head{fill:var(--acc-rose,#b0506b)}.vec-guide{stroke:var(--muted);stroke-width:1.2px;stroke-dasharray:4 4;opacity:.55}.stat-support{stroke:var(--border-strong);stroke-width:3px}.stat-node{fill:var(--ink);stroke:var(--paper);stroke-width:1.5px;transition:r .16s}.stat-node.hot{r:5.5}.stat-antinode{stroke:var(--acc-rose,#b0506b);stroke-width:1.2px;stroke-dasharray:2 4;opacity:.55}.int-area{fill:var(--ink)}@supports (color:color-mix(in lab, red, red)){.int-area{fill:color-mix(in srgb, var(--ink) 16%, transparent)}}.int-area{stroke:none}.int-rect{fill:var(--acc-blue,#2f6db0)}@supports (color:color-mix(in lab, red, red)){.int-rect{fill:color-mix(in srgb, var(--acc-blue,#2f6db0) 18%, transparent)}}.int-rect{stroke:var(--acc-blue,#2f6db0);stroke-width:.75px}.series-bar{fill:var(--acc-blue,#2f6db0)}@supports (color:color-mix(in lab, red, red)){.series-bar{fill:color-mix(in srgb, var(--acc-blue,#2f6db0) 30%, transparent)}}.series-bar{stroke:var(--acc-blue,#2f6db0);stroke-width:.75px}.series-sumline{stroke:var(--ink);stroke-width:2.5px}.series-sumdot{fill:var(--ink);stroke:var(--paper);stroke-width:1.5px}.series-limit line{stroke:var(--muted);stroke-width:1.4px;stroke-dasharray:5 4;transition:stroke .18s}.series-limit.hot line{stroke:var(--ink)}.series-limit-label{fill:var(--text-2)}.explog-mirror{stroke:var(--muted);stroke-width:1px;stroke-dasharray:4 4;opacity:.6}.explog-log{stroke:var(--acc-violet,#6b4fb0);stroke-width:2.5px}.pd-wire{stroke:var(--text-2);stroke-width:1.6px}.pd-r1,.pd-r2{fill:var(--surface);stroke:var(--border-strong);stroke-width:1.5px;transition:stroke .18s,fill .18s}.pd-r1.hot,.pd-r2.hot{stroke:var(--ink);fill:var(--ink-soft)}.pd-tap{stroke:var(--ink);stroke-width:1.6px;stroke-dasharray:3 3}.pd-label{fill:var(--text-2);font-size:11px}.pd-bar-r1{fill:var(--muted)}@supports (color:color-mix(in lab, red, red)){.pd-bar-r1{fill:color-mix(in srgb, var(--muted) 30%, transparent)}}.pd-bar-r1{stroke:var(--border-strong);stroke-width:.75px}.pd-bar-r2{fill:var(--ink)}@supports (color:color-mix(in lab, red, red)){.pd-bar-r2{fill:color-mix(in srgb, var(--ink) 22%, transparent)}}.pd-bar-r2{stroke:var(--ink-border);stroke-width:.75px;transition:fill .18s}.pd-bar-r2.hot{fill:var(--ink)}@supports (color:color-mix(in lab, red, red)){.pd-bar-r2.hot{fill:color-mix(in srgb, var(--ink) 34%, transparent)}}.sd-demand{stroke:var(--acc-blue,#2f6db0);stroke-width:2.5px}.sd-supply{stroke:var(--acc-rose,#b0506b);stroke-width:2.5px}.sd-label.demand{fill:var(--acc-blue,#2f6db0)}.sd-label.supply{fill:var(--acc-rose,#b0506b)}.sd-eq circle{fill:var(--ink);stroke:var(--paper);stroke-width:2px}.sd-eq-drop{stroke:var(--muted);stroke-width:1px;stroke-dasharray:3 3;opacity:.6}.sd-eq.hot circle{r:6.5}.sd-priceline{stroke:var(--muted);stroke-width:1.4px;stroke-dasharray:5 4}.sd-gap{stroke-width:5px;opacity:.6}.sd-gap.surplus{stroke:var(--red,#b3261e)}.sd-gap.shortage{stroke:var(--amber,#b8860b)}.sd-gap-label{fill:var(--text-2)}.mb-shade{fill:var(--ink)}@supports (color:color-mix(in lab, red, red)){.mb-shade{fill:color-mix(in srgb, var(--ink) 20%, transparent)}}.mb-shade{stroke:none}.mb-ea{stroke:var(--muted);stroke-width:1.4px;stroke-dasharray:5 4;transition:stroke .18s}.mb-ea.hot{stroke:var(--red,#b3261e)}.mb-ea-label{fill:var(--text-2)}.mb-ea-label.hot{fill:var(--red,#b3261e)}.decay-half line{stroke:var(--muted);stroke-width:1px;stroke-dasharray:3 3;opacity:.5;transition:stroke .18s,opacity .18s}.decay-half.hot line{stroke:var(--ink);opacity:.85}.decay-now{stroke:var(--acc-rose,#b0506b);stroke-width:1px;stroke-dasharray:2 3;opacity:.6}.decay-dot{fill:var(--acc-rose,#b0506b);stroke:var(--paper);stroke-width:2px}.subtopics{flex-direction:column;gap:12px;margin:0;padding:0;list-style:none;display:flex}.subtopic{align-items:flex-start;gap:14px;padding:16px 18px;display:flex}.subtopic-code{color:var(--ink);background:var(--ink-soft);border:1px solid var(--ink-border);text-align:center;border-radius:7px;flex-shrink:0;min-width:44px;padding:4px 9px;font-size:12px;font-weight:600}.subtopic-body{flex:1;min-width:0}.subtopic-title{color:var(--text);margin:0;font-size:17px;line-height:1.35}.subtopic-detail{color:var(--text-2);margin:4px 0 0}.licensed-figure{margin:0}.licensed-figure-frame{border:1px solid var(--border);background:var(--surface);border-radius:12px;overflow:hidden}.licensed-figure-img{width:100%;height:auto;display:block}.licensed-figure-caption{color:var(--text-2);margin:10px 0 4px}.licensed-figure-credit{color:var(--muted)}.licensed-figure-credit a{color:var(--text-2);text-underline-offset:2px;text-decoration:underline}.licensed-figure-credit a:hover{color:var(--ink)}.diagram-live-label{letter-spacing:.08em;color:var(--ink);font-family:IBM Plex Mono,monospace;font-size:10px;font-weight:600}.diagram-dual-bridge{color:var(--text-2);background:var(--bg-soft);border-top:1px solid var(--paper-rule);border-bottom:1px solid var(--paper-rule);margin:0;padding:12px 16px;font-size:14px;line-height:1.5}.visual-stack{flex-direction:column;gap:0;width:100%;display:flex}.diagram-step-detail{border-top:1px solid var(--paper-rule);background:var(--surface);color:var(--text);padding:16px 18px 18px}.diagram-step-detail-title{color:var(--text);margin:0 0 8px;font-size:1.25rem;font-weight:500;line-height:1.25}.diagram-step-detail-body{color:var(--text-2);line-height:1.55}.diagram-step-detail-body p{margin:0 0 .65em}.diagram-step-detail-body p:last-child{margin-bottom:0}.diagram-step-strip{border-top:1px solid var(--paper-rule);background:var(--bg-soft);flex-wrap:wrap;gap:8px;margin:0;padding:12px 14px 14px;list-style:none;display:flex}.diagram-step-pill{border:1px solid var(--border);background:var(--surface);color:var(--text-2);cursor:pointer;border-radius:999px;align-items:center;gap:8px;max-width:100%;padding:8px 12px;font-family:inherit;font-size:13px;transition:border-color .15s,background .15s,color .15s,box-shadow .15s;display:inline-flex}.diagram-step-pill:hover{border-color:var(--ink-border);color:var(--text)}.diagram-step-pill.on{border-color:var(--ink);background:var(--ink-soft);color:var(--ink);box-shadow:0 0 0 1px var(--ink-border)}.diagram-step-pill-n{background:var(--bg-soft);width:22px;height:22px;color:var(--text-2);border-radius:50%;flex-shrink:0;place-items:center;font-size:11px;font-weight:700;display:grid}.diagram-step-pill.on .diagram-step-pill-n{background:var(--ink);color:var(--on-ink-text,var(--bg))}.diagram-step-pill-t{white-space:nowrap;text-overflow:ellipsis;max-width:16rem;overflow:hidden}.visual-grid--solo{grid-template-columns:1fr}.dg-layer{opacity:1}.dg-cap{fill:var(--text-2);font-family:IBM Plex Mono,monospace;font-size:11px}.dg-formula{fill:var(--ink);font-family:IBM Plex Mono,monospace;font-size:19px;font-weight:700}.dg-readout{font-family:IBM Plex Mono,monospace;font-size:13px;font-weight:700}.diagram-dots{border-top:1px solid var(--paper-rule);justify-content:center;gap:8px;padding:12px;display:flex}.dg-dot{background:var(--border);cursor:pointer;border:none;border-radius:50%;width:9px;height:9px;padding:0;transition:background .16s,transform .16s}.dg-dot.on{background:var(--ink);transform:scale(1.3)}.lesson-page{padding-bottom:20px}.lesson-hero{grid-template-columns:1.6fr 1fr;align-items:start;gap:46px;padding-top:14px;padding-bottom:8px;display:grid}.lesson-tagrow{gap:10px;margin-bottom:16px;display:flex}.lesson-title{font-size:clamp(46px,6.5vw,82px)}.lesson-intro{max-width:60ch;margin-top:18px}.lesson-intro-rich p{margin:0 0 .75em}.lesson-objlist{margin-top:26px}.lesson-objlist ol{grid-template-columns:1fr 1fr;gap:12px 28px;margin:0;padding:0;list-style:none;display:grid}.lesson-objlist li{color:var(--text-2);align-items:baseline;gap:12px;font-size:15px;display:flex}.obj-n{border:1.5px solid var(--ink-border);width:22px;height:22px;color:var(--ink);border-radius:50%;flex-shrink:0;place-items:center;font-size:11px;font-weight:700;display:inline-grid}.lesson-hero-side{position:sticky;top:90px}.lesson-sheet{padding-top:26px}.lesson-sheet-name{margin:8px 0 2px;font-family:Newsreader,serif;font-size:24px;font-weight:500}.lesson-sheet-rules{color:var(--text-2);opacity:.82;margin:10px 0 12px}.lesson-sheet-rules .sheet-line{padding:6px 0}.lesson-sheet-meta{color:var(--text-2);margin:0 0 14px;line-height:1.45}.lesson-modebar-wrap{top:var(--ec-nav-height,calc(72px + env(safe-area-inset-top,0px)));z-index:35;background:var(--bg);position:sticky}@supports (color:color-mix(in lab, red, red)){.lesson-modebar-wrap{background:color-mix(in srgb, var(--bg) 94%, transparent)}}.lesson-modebar-wrap{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);margin-top:26px}.lesson-page{scroll-padding-top:calc(var(--ec-nav-height,72px) + 72px);--lesson-modebar-height:56px}.lesson-modebar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding:12px 32px;display:flex}.mode-tabs{gap:8px;display:flex}.mode-tab{color:var(--text-2);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:10px;align-items:center;gap:9px;padding:9px 18px;font-family:Newsreader,serif;font-size:18px;transition:background .15s,color .15s,border-color .15s,box-shadow .15s;display:flex}.mode-tab:hover{color:var(--ink);background:var(--bg-soft)}.mode-tab.on{background:var(--ink-soft);color:var(--green-on-tint,var(--ink));border-color:var(--ink-border);box-shadow:0 0 0 1px var(--ink-border)}.mode-sub{letter-spacing:.05em;color:var(--muted);text-transform:uppercase;font-family:IBM Plex Mono,monospace;font-size:10px}.mode-tab.on .mode-sub{color:var(--ink);opacity:.7}.mode-count{background:var(--ink);min-width:22px;height:22px;color:var(--bg);border-radius:999px;place-items:center;padding:0 7px;font-size:11px;font-weight:700;display:inline-grid}[data-theme=night] .mode-count{color:#07130d}.mode-tab.on .mode-count{background:var(--ink)}.mode-right{align-items:center;gap:18px;display:flex}.simpler-toggle{cursor:pointer;align-items:center;gap:10px;display:flex}.switch{background:var(--border);cursor:pointer;border:none;border-radius:999px;width:42px;height:24px;padding:0;transition:background .18s;position:relative}.switch.on{background:var(--ink)}.switch .knob{background:var(--surface);border-radius:50%;width:18px;height:18px;transition:left .18s cubic-bezier(.4,0,.2,1);position:absolute;top:3px;left:3px;box-shadow:0 1px 3px #0000004d}.switch.on .knob{left:21px}.lesson-layout{grid-template-columns:200px 1fr;align-items:start;gap:48px;min-width:0;padding-top:36px;display:grid}.lesson-toc{top:calc(var(--ec-nav-height,calc(72px + env(safe-area-inset-top,0px))) + var(--lesson-modebar-height,56px));align-self:start;position:sticky}.lesson-toc nav{flex-direction:column;gap:1px;display:flex}.toc-link{text-align:left;cursor:pointer;color:var(--text-2);background:0 0;border:none;border-left:2px solid #0000;border-radius:8px;align-items:baseline;gap:9px;padding:6px 10px;font-family:Instrument Sans,sans-serif;font-size:13.5px;transition:color .14s,background .14s,border-color .14s;display:flex}.toc-link:hover{color:var(--ink)}.lesson-page .toc-link.on{color:var(--acc-lesson,var(--ink));background:var(--acc-lesson,var(--ink))}@supports (color:color-mix(in lab, red, red)){.lesson-page .toc-link.on{background:color-mix(in srgb, var(--acc-lesson,var(--ink)) 10%, transparent)}}.lesson-page .toc-link.on{border-left-color:var(--acc-lesson,var(--ink));font-weight:600}.toc-num{color:var(--muted);font-size:10px}.lesson-page .toc-link.on .toc-num{color:var(--acc-lesson,var(--ink))}.toc-progress{align-items:center;gap:12px;margin-top:18px;padding:14px;display:flex}.lesson-article{min-width:0;max-width:min(760px,100%)}.simpler-banner{background:var(--ink-soft);border:1px dashed var(--ink-border);border-radius:12px;margin-bottom:30px;padding:12px 18px}.simpler-banner .hand{color:var(--ink);font-size:22px}.lsec{scroll-margin-top:calc(var(--ec-nav-height,72px) + var(--lesson-modebar-height,56px) + 24px);margin-bottom:56px;padding-top:18px}.lsec-head{margin-bottom:22px}.lsec-k{color:var(--ink);letter-spacing:.12em;margin-bottom:6px;font-size:12px;display:block}.lsec-title{letter-spacing:-.02em;margin:0;font-size:clamp(28px,3.4vw,38px);font-weight:500;line-height:1.08}.lsec-sub{max-width:56ch;margin-top:8px}.simple-lead{border-left:3px solid var(--ink)}.simple-kicker{color:var(--ink);letter-spacing:.08em;margin:0 0 14px}.simple-lead-text{font-size:21px;font-weight:400;line-height:1.5}.step-body-rich{font-size:14px}.step-body-rich p{margin:0}.qc-q-text{text-align:left;flex:1;min-width:0}.qc-q-text p{margin:0;display:inline}.faq-q-text{text-align:left;flex:1;min-width:0}.faq-q-text p{margin:0;display:inline}.cmap-detail-rich p{margin:0}.analogy{background:var(--bg-soft);border:1px solid var(--border);border-radius:14px;margin-top:22px;padding:22px 24px;position:relative}.analogy-tag{letter-spacing:.1em;color:var(--amber);margin-bottom:10px;font-size:11px;display:inline-block}.simple-steps{grid-template-columns:1fr 1fr;gap:12px 28px;margin:22px 0 0;padding:0;list-style:none;display:grid}.simple-step{color:var(--text-2);align-items:baseline;gap:12px;font-size:15px;display:flex}.simple-step-rich{flex:1;min-width:0}.lesson-intro-rich p:last-child,.gloss-d-rich p:last-child{margin-bottom:0}.takeaway-rich{flex:1;min-width:0}.takeaway-rich p{margin:0}.visual-grid{flex-direction:column;gap:0;width:100%;display:flex}.step-list{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.step-card{text-align:left;background:var(--surface);border:1px solid var(--border);cursor:pointer;width:100%;color:inherit;border-radius:12px;gap:14px;padding:14px 16px;font-family:inherit;transition:border-color .15s,background .15s,transform .15s,box-shadow .15s;display:flex}.step-card:hover{border-color:var(--ink-border);transform:translate(2px)}.step-card.on{border-color:var(--ink);background:var(--ink-soft);box-shadow:0 0 0 1px var(--ink);transform:translate(2px)}.step-n{background:var(--bg-soft);width:26px;height:26px;color:var(--muted);border-radius:50%;flex-shrink:0;place-items:center;font-size:13px;font-weight:700;display:grid}.step-card.on .step-n{background:var(--ink);color:var(--bg)}[data-theme=night] .step-card.on .step-n{color:#07130d}.step-text{flex-direction:column;gap:4px;display:flex}.step-title{color:var(--text);font-family:Newsreader,serif;font-size:17px;font-weight:500}.formula-row{grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));align-items:stretch;gap:16px;display:grid}.formula-card{background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-card);border-radius:14px;flex-direction:column;min-width:0;padding:20px;transition:transform .16s,box-shadow .16s,border-color .16s;display:flex;overflow:hidden}.formula-card:hover{box-shadow:var(--shadow-pop);border-color:var(--ink-border);transform:translateY(-2px)}.formula-eq{text-align:center;border-bottom:1px dashed var(--border);color:var(--text);-webkit-overflow-scrolling:touch;scrollbar-width:thin;max-width:100%;margin-bottom:14px;padding:14px 8px 18px;font-size:clamp(1.15rem,2.8vw,1.625rem);font-weight:600;overflow:auto hidden}.formula-eq--latex{font-size:inherit;font-weight:inherit;padding-inline:4px}.formula-eq--latex .course-rich-text--formula{text-align:center;color:var(--text);background:0 0;border:none;border-radius:0;max-width:100%;margin:0;padding:0;font-size:clamp(1rem,2.5vw,1.35rem);overflow-x:auto}.formula-eq--latex .katex-display{background:0 0;border:none;max-width:100%;margin:0 auto;padding:0;overflow:auto hidden}.formula-eq--latex .katex{color:var(--text);font-size:clamp(1em,2.4vw,1.15em)}.formula-hint{text-align:center;min-height:2.5em;color:var(--text-2);letter-spacing:.04em;margin-top:14px;font-size:12px;line-height:1.45}.fsym{font:inherit;cursor:pointer;color:var(--ink);background:0 0;border:none;border-radius:6px;padding:2px 4px;transition:background .14s,color .14s}.fsym:hover{background:var(--ink-soft)}.fsym.on{background:var(--ink);color:var(--on-ink-text,var(--ec-on-brand-text))}.formula-parts{flex-direction:column;flex:1;gap:6px;display:flex}.fpart{cursor:pointer;text-align:left;color:inherit;background:0 0;border:1px solid #0000;border-radius:8px;align-items:baseline;gap:10px;width:100%;min-width:0;padding:7px 10px;font-family:inherit;display:flex}.fpart:hover{background:var(--bg-soft)}.fpart.on{background:var(--ink-soft);border-color:var(--ink-border)}.fpart.on .fpart-m{color:var(--text);font-weight:500}.fpart-s{color:var(--ink);word-break:break-word;flex-shrink:0;min-width:1.5rem;max-width:5rem;font-size:14px;font-weight:700}.fpart-m{color:var(--text-2);flex:1;min-width:0;font-size:13px;line-height:1.45}.notes-body{flex-direction:column;gap:26px;display:flex}.note-h{color:var(--text);margin:0 0 8px;font-size:22px;font-weight:500}.note-p{color:var(--text-2);white-space:pre-line;font-size:16.5px;line-height:1.7}.note-bullets{color:var(--text-2);flex-direction:column;gap:8px;margin:10px 0 0;padding-left:1.25rem;display:flex}.note-bullets li{line-height:1.6}.note-tip{background:var(--amber-soft);border:1px solid var(--amber);margin-top:14px}@supports (color:color-mix(in lab, red, red)){.note-tip{border:1px solid color-mix(in srgb, var(--amber) 35%, transparent)}}.note-tip{border-radius:12px;padding:14px 18px}.note-tip .body-2{color:var(--text-2)}.note-tip-tag{letter-spacing:.1em;color:var(--amber);margin-bottom:6px;font-size:11px;display:block}.worked-stack{flex-direction:column;gap:18px;display:flex}.worked{padding:22px 24px;transition:box-shadow .16s,border-color .16s}.worked-stack .worked:hover{box-shadow:var(--shadow-pop)}.worked-head{margin-bottom:16px}.worked-badge{letter-spacing:.1em;color:var(--ink);background:var(--ink-soft);border-radius:999px;margin-bottom:12px;padding:4px 10px;font-size:10.5px;font-weight:700;display:inline-block}.worked-q{color:var(--text);margin:0;font-family:Newsreader,serif;font-size:18px;line-height:1.4}.worked-steps{flex-direction:column;gap:12px;margin:0 0 16px;padding:0;list-style:none;display:flex}.worked-step{color:var(--text-2);grid-template-columns:24px 1fr;align-items:start;gap:13px;font-size:15.5px;line-height:1.55;display:grid}.worked-step-n{background:var(--bg-soft);width:24px;height:24px;color:var(--text);border-radius:6px;flex-shrink:0;place-items:center;margin-top:1px;font-size:12px;font-weight:700;display:inline-grid}.worked-step--enter{animation:.42s cubic-bezier(.2,0,0,1) worked-step-enter}@keyframes worked-step-enter{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@media (prefers-reduced-motion:reduce){.worked-step--enter{animation:none}}.worked-done{color:var(--ink);letter-spacing:.06em;font-size:12px}.cmap{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);align-items:start;gap:24px;min-width:0;display:grid}.cmap-canvas{border:1.5px solid var(--border-strong);background:var(--surface);border-radius:14px;flex-direction:column;gap:16px;min-width:0;padding:18px;display:flex;container:cmap-canvas/inline-size}.cmap-core{aspect-ratio:1;background:var(--ink);width:min(100%,188px);color:var(--on-ink-text,var(--ec-on-brand-text));text-align:center;box-shadow:var(--cta-shadow);border-radius:50%;flex-direction:column;justify-content:center;align-self:center;align-items:center;gap:4px;padding:14px;display:flex}.cmap-core-t{font-family:Newsreader,serif;font-size:clamp(16px,3.5cqi,19px);font-weight:500;line-height:1.15}.cmap-nodes{grid-template-columns:minmax(0,1fr);gap:10px;width:100%;min-width:0;display:grid}@container cmap-canvas (min-width:22rem){.cmap-nodes{grid-template-columns:repeat(2,minmax(0,1fr))}}.cmap-node{box-sizing:border-box;background:var(--paper);border:1.5px solid var(--border-strong);text-align:left;cursor:pointer;width:100%;min-width:0;max-width:100%;color:var(--text);white-space:normal;overflow-wrap:break-word;word-break:normal;border-radius:12px;padding:11px 14px;font-family:Instrument Sans,sans-serif;font-size:13px;font-weight:600;line-height:1.4;transition:border-color .15s,background .15s,transform .15s;position:relative}.cmap-node:hover{border-color:var(--ink);transform:translateY(-1px)}.cmap-node.on{background:var(--ink);color:var(--on-ink-text,var(--ec-on-brand-text));border-color:var(--ink)}.cmap-detail{background:var(--bg-soft);border:1px solid var(--border);border-radius:14px;min-width:0;min-height:120px;padding:22px}.gloss-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.gloss{text-align:left;background:var(--surface);border:1px solid var(--border);cursor:pointer;color:inherit;border-radius:12px;min-height:86px;padding:16px 18px;font-family:inherit;transition:border-color .15s,background .15s,transform .15s}.gloss:hover{border-color:var(--ink-border);transform:translateY(-1px)}.gloss.on{background:var(--ink-soft);border-color:var(--ink-border)}.gloss-t{margin-bottom:6px;font-family:Newsreader,serif;font-size:18px;font-weight:500;display:block}.gloss-d{color:var(--text-2);font-size:14px;line-height:1.5}.gloss .gloss-d{letter-spacing:.04em;color:var(--muted);text-transform:uppercase;font-family:IBM Plex Mono,monospace;font-size:11px}.gloss.on .gloss-d{letter-spacing:0;color:var(--text-2);text-transform:none;font-family:Instrument Sans,sans-serif;font-size:14px}.qc-list{flex-direction:column;gap:10px;display:flex}.qc{text-align:left;background:var(--surface);border:1px solid var(--border);cursor:pointer;color:inherit;border-radius:12px;padding:16px 20px;font-family:inherit;transition:border-color .15s,background .15s,transform .15s}.qc:hover{border-color:var(--ink-border);transform:translate(2px)}.qc.on{border-color:var(--ink-border);background:var(--ink-soft);transform:translate(2px)}.qc-q{align-items:baseline;gap:12px;font-size:16px;font-weight:500;display:flex}.qc-n{color:var(--ink);flex-shrink:0;font-size:13px}.qc-a{color:var(--text-2);margin:10px 0 0 34px;font-size:15px;line-height:1.5}.qc-reveal{color:var(--muted);letter-spacing:.08em;margin:8px 0 0 34px;font-size:10.5px;display:block}.fc-zone{max-width:460px;margin:0 auto}.fcard{cursor:pointer;perspective:1400px;height:230px;position:relative}.fcard--busy{pointer-events:none;opacity:.88}.fcard-face{backface-visibility:hidden;border:1.5px solid var(--border-strong);background:var(--surface);text-align:center;box-shadow:var(--shadow-card);border-radius:16px;flex-direction:column;justify-content:center;align-items:center;gap:16px;padding:30px;transition:transform .52s cubic-bezier(.4,0,.2,1);display:flex;position:absolute;inset:0}.fcard-front{transform:rotateY(0)}.fcard-back{background:var(--ink-soft);transform:rotateY(180deg)}.fcard.flipped .fcard-front{transform:rotateY(-180deg)}.fcard.flipped .fcard-back{transform:rotateY(0)}.fcard-text{font-size:22px;font-weight:500;line-height:1.35}.fcard-hint{color:var(--muted)}.fc-nav{justify-content:center;align-items:center;gap:22px;margin-top:18px;display:flex}.fc-nav-meta{flex-direction:column;align-items:center;gap:2px;display:flex}.fc-nav-hint{color:var(--muted);letter-spacing:.06em;opacity:.85;font-size:10px}.fc-arrow{border:1.5px solid var(--border-strong);background:var(--surface);cursor:pointer;width:40px;height:40px;color:var(--text);border-radius:50%;font-size:16px;transition:border-color .15s,color .15s,transform .15s}.fc-arrow:hover{border-color:var(--ink);color:var(--ink)}.takeaways{grid-template-columns:1fr 1fr;gap:14px;margin:0;padding:0;list-style:none;display:grid}.takeaways li{background:var(--surface);border:1px solid var(--border);border-left:3px solid var(--ink);border-radius:10px;align-items:baseline;gap:12px;padding:14px 16px;display:flex}.take-check{color:var(--ink);flex-shrink:0;font-weight:700}.practice{border:1.5px solid var(--ink-border);padding:24px 26px;transition:transform .16s,box-shadow .16s,border-color .16s}.practice-stack .practice:hover{box-shadow:var(--shadow-pop);transform:translateY(-2px)}.practice.big{max-width:760px}.practice-head{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.practice-tag{letter-spacing:.1em;color:var(--ink);font-size:10.5px;font-weight:700}.practice-marks{color:var(--muted)}.practice-ref{margin:0 0 8px;font-size:20px}.practice-text{margin-bottom:18px;font-size:15.5px;line-height:1.6}.practice-text .course-rich-text--prose p{margin:0 0 .65em}.practice-text .course-rich-text--prose p:last-child{margin-bottom:0}.practice-foot{flex-wrap:wrap;align-items:center;gap:16px;margin-bottom:18px;display:flex}.practice-scheme{background:var(--paper);border:1px dashed var(--border-strong);border-radius:8px;padding:14px 16px}.practice-scheme-tag{letter-spacing:.1em;color:var(--muted);margin-bottom:10px;font-size:10px;display:block}.practice-scheme-toggle{cursor:pointer;background:0 0;border:none;justify-content:space-between;align-items:center;gap:12px;width:100%;margin:0 0 10px;padding:0;display:flex}.practice-scheme-toggle .practice-scheme-tag{margin-bottom:0}.practice-scheme-body{margin-top:2px}.practice-stack{flex-direction:column;gap:16px;display:flex}.checkpoint{border:1.5px solid var(--acc);padding:22px 24px}@supports (color:color-mix(in lab, red, red)){.checkpoint{border:1.5px solid color-mix(in srgb, var(--acc) 42%, var(--ink-border))}}.checkpoint{background:linear-gradient(140deg, var(--acc), var(--surface) 62%)}@supports (color:color-mix(in lab, red, red)){.checkpoint{background:linear-gradient(140deg, color-mix(in srgb, var(--acc) 11%, var(--surface)), var(--surface) 62%)}}.checkpoint{border-radius:14px;transition:transform .16s,box-shadow .16s}.checkpoint:hover{box-shadow:var(--shadow-pop);transform:translateY(-2px)}.checkpoint-head{justify-content:space-between;align-items:center;margin-bottom:10px;display:flex}.checkpoint-tag{letter-spacing:.12em;text-transform:uppercase;color:var(--acc);background:var(--acc);align-items:center;margin-bottom:12px;font-size:10px;font-weight:700;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.checkpoint-tag{background:color-mix(in srgb, var(--acc) 14%, var(--surface))}}.checkpoint-tag{border:1px solid var(--acc)}@supports (color:color-mix(in lab, red, red)){.checkpoint-tag{border:1px solid color-mix(in srgb, var(--acc) 32%, transparent)}}.checkpoint-tag{border-radius:999px;padding:4px 11px}.checkpoint-title{margin:0 0 8px;font-size:20px}.checkpoint-lead{color:var(--text-2);margin:0 0 16px;font-size:15px;line-height:1.6}.checkpoint-foot{flex-wrap:wrap;align-items:center;gap:14px;display:flex}.lesson-mastery{flex-direction:column;gap:10px;margin:8px 0 4px;display:flex}.lesson-mastery-standing{color:var(--ink);background:var(--paper);border:1px solid var(--ink-border);border-radius:12px;align-items:center;gap:10px;padding:12px 16px;font-size:14px;display:flex}.lesson-mastery-dot{background:var(--muted);border-radius:50%;flex-shrink:0;width:9px;height:9px}.lm-critical .lesson-mastery-dot{background:#e0575b}.lm-sampled .lesson-mastery-dot{background:#e0a13a}.lm-proficient .lesson-mastery-dot{background:#3a86c8}.lm-exam_ready .lesson-mastery-dot{background:#2f9e6b}.lm-critical{border-color:#e0575b}@supports (color:color-mix(in lab, red, red)){.lm-critical{border-color:color-mix(in srgb, #e0575b 35%, var(--ink-border))}}.lm-critical{background:#e0575b}@supports (color:color-mix(in lab, red, red)){.lm-critical{background:color-mix(in srgb, #e0575b 7%, var(--surface))}}.lm-exam_ready{border-color:#2f9e6b}@supports (color:color-mix(in lab, red, red)){.lm-exam_ready{border-color:color-mix(in srgb, #2f9e6b 32%, var(--ink-border))}}.lm-exam_ready{background:#2f9e6b}@supports (color:color-mix(in lab, red, red)){.lm-exam_ready{background:color-mix(in srgb, #2f9e6b 7%, var(--surface))}}.lesson-mastery-next{color:var(--acc);background:var(--acc);border-radius:12px;align-items:center;gap:6px;padding:11px 16px;font-size:14px;font-weight:600;text-decoration:none;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.lesson-mastery-next{background:color-mix(in srgb, var(--acc) 8%, var(--surface))}}.lesson-mastery-next{border:1px solid var(--acc)}@supports (color:color-mix(in lab, red, red)){.lesson-mastery-next{border:1px solid color-mix(in srgb, var(--acc) 30%, var(--ink-border))}}.lesson-mastery-next{transition:border-color .16s,transform .16s}.lesson-mastery-next:hover{border-color:var(--acc);transform:translateY(-1px)}@supports (color:color-mix(in lab, red, red)){.lesson-mastery-next:hover{border-color:color-mix(in srgb, var(--acc) 55%, var(--ink-border))}}.lesson-mastery-review{color:var(--muted);align-self:flex-start;padding:2px 0;font-size:13px;font-weight:600;text-decoration:none}.lesson-mastery-review:hover{color:var(--acc)}.lesson-mastery-inline{color:var(--acc);text-underline-offset:2px;font-weight:600;text-decoration:underline}.ms-line{color:var(--text-2);border-bottom:1px solid var(--paper-rule);justify-content:space-between;align-items:flex-start;gap:12px;padding:5px 0;font-family:IBM Plex Mono,monospace;font-size:13px;display:flex}.ms-line:last-child{border-bottom:none}.ms-line-text{min-width:0;color:var(--text);flex:1;font-family:Instrument Sans,sans-serif;font-size:14px}.ms-line .stamp{flex-shrink:0;margin-top:2px}.worked-step-rich{min-width:0;color:var(--text-2);flex:1;font-size:15px}.course-root .practice-text .course-rich-text--prose table,.course-root .worked-q-rich .course-rich-text--prose table,.course-root .worked-step-rich .course-rich-text--prose table{border-collapse:collapse;width:100%;margin:10px 0;font-size:13.5px}.course-root .practice-text .course-rich-text--prose th,.course-root .practice-text .course-rich-text--prose td,.course-root .worked-q-rich .course-rich-text--prose th,.course-root .worked-q-rich .course-rich-text--prose td,.course-root .worked-step-rich .course-rich-text--prose th,.course-root .worked-step-rich .course-rich-text--prose td{border:1px solid var(--border);text-align:left;vertical-align:top;padding:8px 10px}.course-root .practice-text .course-rich-text--prose th,.course-root .worked-q-rich .course-rich-text--prose th,.course-root .worked-step-rich .course-rich-text--prose th{background:var(--ink-soft);color:var(--ink);font-weight:600}.course-root .note-p .course-rich-text--prose p,.course-root .note-bullets .course-rich-text--prose p,.course-root .fcard-text .course-rich-text--flashcard p{margin:0}.course-root .qc-a .course-rich-text--prose p{color:var(--text-2);margin:0}.faqs{flex-direction:column;gap:8px;display:flex}.faq{border:1px solid var(--border);background:var(--surface);border-radius:12px;overflow:hidden}.faq.on{border-color:var(--ink-border)}.faq-q{cursor:pointer;width:100%;color:var(--text);text-align:left;background:0 0;border:none;justify-content:space-between;align-items:center;gap:16px;padding:16px 20px;font-family:Newsreader,serif;font-size:17px;display:flex}.faq-plus{color:var(--ink);flex-shrink:0;font-size:22px}.faq-a{max-width:none;margin:0;padding:0 20px 18px}.lesson-upsell{background:var(--ink-soft);border:1.5px solid var(--ink-border);border-radius:16px;align-items:flex-start;gap:16px;margin:8px 0;padding:22px 24px;display:flex}.lesson-upsell-icon{background:var(--ink);width:40px;height:40px;color:var(--bg);border-radius:11px;flex-shrink:0;place-items:center;display:grid}[data-theme=night] .lesson-upsell-icon{color:#07130d}.lesson-upsell-body{flex:1;min-width:0}.lesson-upsell-title{color:var(--ink);margin:0 0 4px;font-size:20px;line-height:1.2}.lesson-upsell-text{color:var(--text);margin:0 0 14px}.lesson-upsell-cta{white-space:nowrap}@media (max-width:560px){.lesson-upsell{flex-direction:column;gap:12px;padding:20px}.lesson-upsell-cta{justify-content:center;width:100%}}.lesson-trial-banner{background:var(--ink-soft);border:1px solid var(--ink-border);border-radius:12px;flex-wrap:wrap;align-items:center;gap:12px;margin:4px 0 -8px;padding:11px 16px;display:flex}.lesson-trial-spark{letter-spacing:.12em;background:var(--ink);color:var(--bg);border-radius:6px;flex-shrink:0;padding:3px 8px;font-size:10px;font-weight:600}[data-theme=night] .lesson-trial-spark{color:#07130d}.lesson-trial-text{min-width:180px;color:var(--text);flex:1;font-size:14.5px}.lesson-trial-text strong{color:var(--ink);font-weight:600}.lesson-trial-link{color:var(--ink);flex-shrink:0;font-size:14px;font-weight:600;text-decoration:none}.lesson-trial-link:hover{text-decoration:underline}.lesson-end{border-top:1px dashed var(--border);margin-top:10px;padding-top:30px}.complete-btn{background:var(--surface);border:1.5px solid var(--border-strong);width:100%;color:var(--text);cursor:pointer;border-radius:12px;justify-content:center;align-items:center;gap:12px;padding:15px;font-family:Instrument Sans,sans-serif;font-size:16px;font-weight:600;transition:border-color .15s,background .15s,transform .15s;display:flex}.complete-btn:hover{border-color:var(--ink);transform:translateY(-1px)}.complete-btn.done{background:var(--ink-soft);border-color:var(--ink);color:var(--ink)}.complete-box{border:1.5px solid var(--border-strong);border-radius:6px;place-items:center;width:22px;height:22px;font-size:13px;display:grid}.complete-btn.done .complete-box{background:var(--ink);border-color:var(--ink);color:var(--bg)}[data-theme=night] .complete-btn.done .complete-box{color:#07130d}.prevnext{grid-template-columns:1fr 1fr;gap:14px;margin:18px 0 30px;display:grid}.pn-btn{background:var(--surface);border:1px solid var(--border);cursor:pointer;color:inherit;text-align:left;border-radius:12px;flex-direction:column;gap:4px;padding:16px 18px;font-family:inherit;transition:transform .14s,border-color .14s,box-shadow .14s;display:flex}.pn-btn.right{text-align:right}.pn-btn:hover{border-color:var(--ink-border);box-shadow:var(--shadow-card);transform:translate(3px)}.pn-btn.right:hover{transform:translate(-3px)}.pn-t{font-size:17px;font-weight:500}.related-grid{grid-template-columns:1fr 1fr;gap:10px;display:grid}.related-card{background:var(--surface);border:1px solid var(--border);cursor:pointer;color:inherit;text-align:left;border-radius:10px;align-items:center;gap:12px;padding:12px 16px;font-family:inherit;transition:transform .14s,border-color .14s;display:flex}.related-card:hover{border-color:var(--ink-border);transform:translate(3px)}.related-n{color:var(--ink);font-size:12px;font-weight:700}.related-t{font-size:14.5px}.lesson-papers{padding-top:36px}.lesson-papers-end{margin-top:36px}.lesson-papers-back{margin-top:8px}.lesson-mobile-jump{top:calc(var(--ec-nav-height,calc(72px + env(safe-area-inset-top,0px))) + var(--lesson-modebar-height,56px));z-index:34;scrollbar-width:none;-webkit-overflow-scrolling:touch;background:var(--bg);gap:8px;margin-bottom:4px;padding:10px 0 14px;display:none;position:sticky;overflow-x:auto}@supports (color:color-mix(in lab, red, red)){.lesson-mobile-jump{background:color-mix(in srgb, var(--bg) 92%, transparent)}}.lesson-mobile-jump{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}.lesson-mobile-jump::-webkit-scrollbar{display:none}.lesson-mobile-jump-progress{border:1px solid var(--acc-lesson,var(--ink));flex-shrink:0;align-items:center;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.lesson-mobile-jump-progress{border:1px solid color-mix(in srgb, var(--acc-lesson,var(--ink)) 40%, var(--border))}}.lesson-mobile-jump-progress{background:var(--acc-lesson,var(--ink))}@supports (color:color-mix(in lab, red, red)){.lesson-mobile-jump-progress{background:color-mix(in srgb, var(--acc-lesson,var(--ink)) 8%, var(--surface))}}.lesson-mobile-jump-progress{color:var(--acc-lesson,var(--ink));white-space:nowrap;border-radius:999px;padding:7px 12px;font-size:12px;font-weight:700}.lesson-mobile-jump-progress.done{border-color:var(--acc-lesson,var(--ink))}@supports (color:color-mix(in lab, red, red)){.lesson-mobile-jump-progress.done{border-color:color-mix(in srgb, var(--acc-lesson,var(--ink)) 70%, var(--border))}}.lesson-mobile-jump-link{border:1px solid var(--border);background:var(--surface);color:var(--text-2);cursor:pointer;white-space:nowrap;border-radius:999px;flex-shrink:0;padding:7px 14px;font-family:inherit;font-size:13px;transition:border-color .14s,color .14s,background .14s}.lesson-mobile-jump-link.on{border-color:var(--acc-lesson,var(--ink));background:var(--acc-lesson,var(--ink))}@supports (color:color-mix(in lab, red, red)){.lesson-mobile-jump-link.on{background:color-mix(in srgb, var(--acc-lesson,var(--ink)) 10%, transparent)}}.lesson-mobile-jump-link.on{color:var(--acc-lesson,var(--ink));font-weight:600}.catalog-empty{grid-column:1/-1;max-width:520px}.catalog-empty-reset{margin-top:16px}.cmap-detail-body{margin-top:4px}.cmap-detail-body p{margin:0}.lesson-resources{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.lesson-resource-link{border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:10px;justify-content:space-between;align-items:center;gap:12px;padding:14px 18px;font-size:15px;text-decoration:none;transition:border-color .14s,transform .14s;display:flex}.lesson-resource-link:hover{border-color:var(--ink-border);color:var(--ink);transform:translate(3px)}.lesson-resource-go{color:var(--muted);font-size:16px}.mobile-menu{border-top:1px solid var(--border);background:var(--bg);flex-direction:column;gap:4px;padding:10px 24px 18px;display:flex}.mobile-menu a,.mobile-menu button{text-align:left;color:var(--text);cursor:pointer;border:none;border-bottom:1px solid var(--border);background:0 0;padding:12px 4px;font-family:Newsreader,serif;font-size:17px;text-decoration:none;transition:color .14s,padding-left .14s;display:block}.mobile-menu a:hover{color:var(--ink);padding-left:8px}.outline-banner{border-left:3px solid var(--amber);align-items:flex-start;gap:14px;margin-bottom:30px;padding:16px 20px;display:flex}.outline-tag{letter-spacing:.1em;color:var(--amber);background:var(--amber-soft);border-radius:6px;flex-shrink:0;padding:5px 9px;font-size:10px;font-weight:700}.outline-banner p{margin:0}.subjects-page,.dash-page,.pricing-page{padding-bottom:30px}.subjects-hero,.pricing-hero,.dash-hero{padding:16px 0 26px}.dash-hero{grid-template-columns:1fr auto;align-items:center;gap:30px;display:grid}.subj-ledger{flex-direction:column;gap:8px;display:flex}.subj-row{--acc:var(--ink);background:var(--surface);border:1px solid var(--border);cursor:pointer;text-align:left;color:inherit;border-radius:12px;grid-template-columns:52px 1.4fr 1.2fr 1fr 22px;align-items:center;gap:18px;padding:14px 20px;font-family:inherit;transition:transform .14s,border-color .14s;display:grid}.subj-row:hover{border-color:var(--acc);transform:translate(3px)}@supports (color:color-mix(in lab, red, red)){.subj-row:hover{border-color:color-mix(in srgb, var(--acc) 45%, var(--border))}}.subj-glyph{color:var(--acc);text-align:center;font-family:Newsreader,serif;font-size:34px}.subj-name{margin:0 0 2px;font-family:Newsreader,serif;font-size:20px;font-weight:500}.subj-code{color:var(--muted);font-size:11.5px}.subj-tags{flex-wrap:wrap;gap:6px;display:flex}.subj-tag{letter-spacing:.05em;color:var(--text-2);background:var(--bg-soft);border:1px solid var(--border);border-radius:999px;padding:3px 8px;font-size:10px}.subj-tag.on{color:var(--acc);border-color:var(--acc)}@supports (color:color-mix(in lab, red, red)){.subj-tag.on{border-color:color-mix(in srgb, var(--acc) 40%, transparent)}}.subj-tag.on{background:var(--acc)}@supports (color:color-mix(in lab, red, red)){.subj-tag.on{background:color-mix(in srgb, var(--acc) 10%, transparent)}}.subj-links{gap:6px;display:flex}.subj-pill{color:var(--text-2);border:1px solid var(--border);border-radius:999px;padding:4px 12px;font-family:Instrument Sans,sans-serif;font-size:12.5px}.subj-go{color:var(--muted);text-align:center;font-size:18px}.subj-row:hover .subj-go{color:var(--acc)}.subjects-note{border-left:3px solid var(--ink);margin-top:26px}.dash-streakcard{min-width:220px;padding:18px 22px}.streak-num{align-items:baseline;gap:8px;margin:8px 0 14px;display:flex}.streak-num b{color:var(--ink);font-family:Newsreader,serif;font-size:44px;font-weight:500;line-height:1}.streak-days{color:var(--muted);font-size:14px}.streak-cal{gap:6px;display:flex}.streak-dot{width:28px;height:28px;color:var(--muted);background:var(--bg-soft);border:1px solid var(--border);border-radius:8px;place-items:center;font-family:IBM Plex Mono,monospace;font-size:11px;display:grid}.streak-dot.on{background:var(--ink);color:var(--bg);border-color:var(--ink)}[data-theme=night] .streak-dot.on{color:#07130d}.dash-stats{grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:36px;display:grid}.dash-stat{padding:20px 22px;transition:transform .16s,box-shadow .16s,border-color .16s}.dash-stat:hover{box-shadow:var(--shadow-pop);border-color:var(--ink-border);transform:translateY(-2px)}.dash-stat-n{color:var(--ink);font-size:38px;font-weight:500;line-height:1;display:block}.dash-stat-l{letter-spacing:.04em;color:var(--muted);text-transform:uppercase;margin-top:8px;font-family:IBM Plex Mono,monospace;font-size:11px;display:block}.dash-cols{grid-template-columns:1fr 320px;align-items:start;gap:40px;display:grid}.dash-sheet{padding:20px 24px 8px}.dash-mark{border-bottom:1px solid var(--paper-rule);cursor:pointer;border-radius:6px;padding:14px 0;transition:background .14s}.dash-mark:hover{background:var(--ink)}@supports (color:color-mix(in lab, red, red)){.dash-mark:hover{background:color-mix(in srgb, var(--ink) 6%, transparent)}}.dash-mark:hover{margin-left:-8px;margin-right:-8px;padding-left:8px;padding-right:8px}.dash-mark:last-child{border-bottom:none}.dash-mark-top{justify-content:space-between;align-items:center;gap:12px;display:flex}.dash-mark-ref{color:var(--text);font-family:Instrument Sans,sans-serif;font-size:15px;font-weight:600}.dash-mark:hover .dash-mark-ref{color:var(--ink)}.dash-when{margin-top:4px;display:block}.dash-continue{flex-direction:column;gap:12px;display:flex}.dash-course{--acc:var(--ink);cursor:pointer;text-align:left;color:inherit;border:1px solid var(--border);align-items:center;gap:16px;padding:16px 20px;font-family:inherit;transition:border-color .14s,transform .14s;display:flex}.dash-course:hover{border-color:var(--acc);transform:translateY(-2px)}@supports (color:color-mix(in lab, red, red)){.dash-course:hover{border-color:color-mix(in srgb, var(--acc) 45%, var(--border))}}.dash-course-name{margin:0 0 2px;font-family:Newsreader,serif;font-size:18px;font-weight:500}.dash-course>div{flex:1}.dash-course-go{color:var(--muted);font-size:18px}.dash-aside{flex-direction:column;gap:18px;display:flex;position:sticky;top:90px}.weak-row{--acc:var(--ink);background:var(--bg-soft);border:1px solid var(--border);border-left:3px solid var(--acc);cursor:pointer;text-align:left;width:100%;color:inherit;border-radius:9px;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;margin-bottom:8px;padding:11px 14px;font-family:inherit;display:grid}.weak-row:hover{background:var(--surface)}.weak-n{color:var(--acc);font-size:11px}.weak-t{font-size:14px}.weak-go{color:var(--muted);font-family:IBM Plex Mono,monospace;font-size:10.5px}.plans{grid-template-columns:1fr 1fr;gap:20px;max-width:880px;margin:0 auto;display:grid}.plan{padding:28px 28px 30px;transition:border-color .15s,transform .15s,box-shadow .15s;position:relative}.plan:hover{border-color:var(--ink-border);box-shadow:var(--shadow-card);transform:translateY(-3px)}.plan:before{content:"";background:var(--plan-acc,var(--border));pointer-events:none;border-radius:0 0 3px 3px;height:3px;position:absolute;top:0;left:24px;right:24px}.plan[data-plan=free]{--plan-acc:var(--acc-slate)}@supports (color:color-mix(in lab, red, red)){.plan[data-plan=free]{--plan-acc:color-mix(in srgb, var(--acc-slate) 55%, var(--border))}}.plan[data-plan=pro]{--plan-acc:var(--acc-blue)}.plan[data-plan=scholar]{--plan-acc:linear-gradient(90deg, var(--ink), var(--ink-bright))}.plan[data-plan=max]{--plan-acc:var(--ec-accent-warm,var(--amber))}.plan.featured{border:1.5px solid var(--ink);border-radius:var(--ec-radius-card-lg,20px);background:var(--ec-surface-warm,var(--surface));box-shadow:var(--shadow-pop), 0 0 0 4px var(--ink-soft)}.plan.featured:hover{box-shadow:var(--shadow-pop), 0 0 0 4px var(--ink-soft)}.plan-cta{justify-content:center;width:100%}.plan-ribbon{background:var(--ec-accent-warm,var(--ink));color:#241405;letter-spacing:.1em;border-radius:999px;padding:5px 12px;font-size:10px;font-weight:700;position:absolute;top:-11px;right:24px}.plan-tag{color:var(--ink);margin-bottom:8px;font-size:11px}.plan-name{margin:0 0 8px;font-size:26px;font-weight:500}.plan-price{align-items:baseline;gap:8px;margin-bottom:14px;display:flex}.plan-was{color:var(--text-2);font-family:IBM Plex Mono,monospace;font-size:16px;text-decoration:line-through}.plan-now{font-size:44px;font-weight:600;line-height:1}.plan-per{color:var(--text-2);font-size:14px}.plan-blurb{min-height:44px;margin-bottom:18px}.plan-feats{border-top:1px dashed var(--border);flex-direction:column;gap:11px;margin:22px 0 0;padding:22px 0 0;list-style:none;display:flex}.plan-feats li{color:var(--text-2);align-items:baseline;gap:11px;font-size:14.5px;display:flex}.plan-feats li.yes,.plan-feats li.no{color:var(--text)}@supports (color:color-mix(in lab, red, red)){.plan-feats li.no{color:color-mix(in oklch, var(--text) 52%, var(--surface))}}.feat-mark{width:18px;color:var(--ink);flex-shrink:0;font-weight:700}.plan-feats li.no .feat-mark{color:var(--text)}@supports (color:color-mix(in lab, red, red)){.plan-feats li.no .feat-mark{color:color-mix(in oklch, var(--text) 52%, var(--surface))}}.ms-plan-matrix-wrap{max-width:1040px;margin:56px auto 0}.ms-plan-matrix-scroll{-webkit-overflow-scrolling:touch;overflow-x:auto}.ms-plan-matrix{border-collapse:collapse;width:100%}.ms-plan-matrix th,.ms-plan-matrix td{text-align:center;vertical-align:middle;padding:13px 14px}.ms-plan-matrix thead th{color:var(--text);border-bottom:1.5px solid var(--border-strong);font-family:Newsreader,Georgia,serif;font-size:18px;font-weight:500}.ms-plan-matrix thead th.ms-matrix-feat-head{text-align:left}.ms-plan-matrix tbody th.ms-matrix-feat{text-align:left;color:var(--text);border-bottom:1px solid var(--border);padding-right:18px;font-size:14.5px;font-weight:500}.ms-plan-matrix tbody td{color:var(--text-2);border-bottom:1px solid var(--border);font-size:14.5px}.ms-plan-matrix tbody tr:last-child th,.ms-plan-matrix tbody tr:last-child td{border-bottom:none}.ms-matrix-yes{color:var(--ink);font-size:16px;font-weight:700}.ms-matrix-no{color:var(--text)}@supports (color:color-mix(in lab, red, red)){.ms-matrix-no{color:color-mix(in oklch, var(--text) 42%, var(--surface))}}.ms-matrix-val{color:var(--text);font-family:IBM Plex Mono,monospace;font-weight:600}.ms-plan-matrix .ms-matrix-col-featured{background:var(--ec-surface-warm,var(--ink))}@supports (color:color-mix(in lab, red, red)){.ms-plan-matrix .ms-matrix-col-featured{background:var(--ec-surface-warm,color-mix(in srgb, var(--ink) 4%, var(--surface)))}}.ms-plan-matrix thead th.ms-matrix-col-featured{color:var(--ink);border-top-left-radius:10px;border-top-right-radius:10px}@media (max-width:560px){.ms-plan-matrix th,.ms-plan-matrix td{padding:11px 8px}.ms-plan-matrix thead th{font-size:15px}.ms-plan-matrix tbody th.ms-matrix-feat,.ms-plan-matrix tbody td{font-size:12.5px}.ms-plan-matrix tbody th.ms-matrix-feat{padding-right:10px}}.pricing-faqs{max-width:760px;margin:48px auto 0}.catalog-lead{margin-top:18px}.catalog-hero-note{white-space:nowrap;position:absolute;top:-30px;right:4px}.continue-kicker{color:var(--ink)}.continue-title{margin:3px 0 2px}.continue-topic{font-style:italic;font-weight:400}.continue-blurb{margin:0;font-size:14px}.hub-hero-title{font-size:clamp(40px,5.5vw,68px)}.hub-lead{margin-top:12px}.hub-prog-copy{margin:0;font-size:14px}.hub-prog-sync{margin-top:6px}.hub-streak-copy{font-size:13.5px}.dash-title{font-size:clamp(34px,4.5vw,56px)}.dash-lead{margin-top:12px}.section-title{margin-bottom:14px}.section-title-spaced{margin:34px 0 14px}.dash-mark-link{color:inherit;text-decoration:none;display:block}.sheet-footnote{text-align:center;margin-top:12px}.objlist-kicker{margin-bottom:10px}.complete-note{text-align:center;margin-top:14px;display:block;position:static;transform:rotate(-1deg)}.cmap-detail-kicker{color:var(--ink);margin:0}.qc.focus{border-color:var(--ink);box-shadow:0 0 0 2px var(--ink-soft)}.pricing-title{font-size:clamp(38px,5vw,64px)}.pricing-lead{max-width:58ch;margin-top:16px;margin-left:auto;margin-right:auto}.pricing-footnote{text-align:center;margin-top:30px}.pricing-value-strip{grid-template-columns:repeat(2,1fr);gap:14px;max-width:1040px;margin:32px auto 0;display:grid}.pricing-value-item{background:var(--surface);border:1px solid var(--border);text-align:left;border-radius:14px;align-items:flex-start;gap:14px;padding:18px 20px;transition:border-color .15s,box-shadow .15s;display:flex}.pricing-value-item:hover{border-color:var(--ink-border);box-shadow:var(--shadow-card)}.pricing-value-icon{background:var(--ink-soft);width:40px;height:40px;color:var(--ink);border-radius:11px;flex-shrink:0;place-items:center;display:grid}.pricing-value-title{color:var(--text);margin:0 0 4px;font-family:Instrument Sans,sans-serif;font-size:15px;font-weight:600}.pricing-value-body{color:var(--text-2);margin:0;font-size:13.5px;line-height:1.45}@media (max-width:720px){.pricing-value-strip{grid-template-columns:1fr}}.plan-trial-pill{letter-spacing:.1em;color:var(--ink);background:var(--ink);margin-bottom:8px;font-size:10px;font-weight:700;display:inline-block}@supports (color:color-mix(in lab, red, red)){.plan-trial-pill{background:color-mix(in srgb, var(--ink) 12%, var(--surface))}}.plan-trial-pill{border:1px solid var(--ink-border);border-radius:999px;padding:4px 10px}.plan-bestfor{letter-spacing:.04em;color:var(--text-2);text-align:left;margin:-8px 0 14px;font-size:11px}.plan-killer{background:var(--ink-soft);border:1px solid var(--ink-border);color:var(--text);text-align:left;border-radius:10px;align-items:flex-start;gap:8px;margin-bottom:16px;padding:12px 14px;font-size:13.5px;font-weight:600;line-height:1.4;display:flex}.plan.featured .plan-killer{background:var(--ink)}@supports (color:color-mix(in lab, red, red)){.plan.featured .plan-killer{background:color-mix(in srgb, var(--ink) 8%, var(--ec-surface-warm,var(--surface)))}}.plan.featured .plan-killer{border-color:var(--ink)}@supports (color:color-mix(in lab, red, red)){.plan.featured .plan-killer{border-color:color-mix(in srgb, var(--ink) 28%, var(--border))}}.plan-killer-icon{width:16px;height:16px;color:var(--ink);flex-shrink:0;margin-top:2px}.plan-feats li.yes .feat-mark{color:var(--ink);align-items:center;display:inline-flex}.plan-feats li.no .feat-mark{font-weight:400}.pricing-why{text-align:center;max-width:1040px;margin:64px auto 0}.pricing-why-kicker,.pricing-why-title{margin-bottom:10px}.pricing-why-lead{max-width:52ch;margin:0 auto 32px;font-size:17px}.pricing-why-grid{text-align:left;grid-template-columns:repeat(3,1fr);gap:18px;display:grid}.pricing-why-card{padding:24px 22px 26px;transition:transform .15s,box-shadow .15s;position:relative;overflow:hidden}.pricing-why-card:hover{box-shadow:var(--shadow-pop);transform:translateY(-2px)}.pricing-why-card-icon{background:var(--ink-soft);width:44px;height:44px;color:var(--ink);border-radius:12px;place-items:center;margin-bottom:14px;display:grid}.pricing-why-card-title{color:var(--text);margin:0 0 8px;font-family:Newsreader,Georgia,serif;font-size:19px;font-weight:500}.pricing-why-card-body{color:var(--text-2);margin:0;font-size:14px;line-height:1.5}.pricing-why-cta{justify-content:center;margin-top:28px;display:flex}.pricing-why-cta .btn-primary{align-items:center;gap:8px;min-height:48px;padding:0 28px;display:inline-flex}@media (max-width:880px){.pricing-why-grid{grid-template-columns:1fr;max-width:460px;margin:0 auto}}.pricing-trust-item{color:var(--text-2);align-items:center;gap:6px;font-size:13.5px;display:inline-flex}.plans.three{grid-template-columns:repeat(3,1fr);max-width:1040px}.plans.three .plan{padding:26px 24px 28px}.plans.four{grid-template-columns:repeat(4,1fr);gap:16px;max-width:1240px}.plans.four .plan{flex-direction:column;padding:22px 18px 26px;display:flex}.plans.four .plan .plan-cta{margin-top:auto}.plans.four .plan-name{font-size:22px}.plans.four .plan-now{font-size:30px}.plans.four .plan-feats{padding-top:18px;font-size:13.5px}.plans.four .plan-blurb{min-height:auto}@media (max-width:1080px){.plans.four{grid-template-columns:repeat(2,1fr);max-width:720px}}.pricing-trialbar{background:var(--ink-soft);border:1px solid var(--ink-border);max-width:1040px;color:var(--text);border-radius:12px;flex-wrap:wrap;align-items:center;gap:12px;margin:22px auto 0;padding:12px 18px;font-size:14.5px;display:flex}.pricing-trialbar-tag{letter-spacing:.12em;background:var(--ink);color:var(--bg);border-radius:6px;flex-shrink:0;padding:3px 8px;font-size:10px;font-weight:600}[data-theme=night] .pricing-trialbar-tag,[data-ec-theme=late-night] .pricing-trialbar-tag{color:#07130d}.pricing-controls{flex-wrap:wrap;justify-content:center;align-items:center;gap:16px;margin:26px 0 22px;display:flex}.pricing-toggle{background:var(--surface);border:1px solid var(--border-strong);border-radius:999px;padding:4px;display:inline-flex}.pricing-toggle-btn{cursor:pointer;color:var(--text-2);background:0 0;border:none;border-radius:999px;align-items:center;gap:8px;padding:8px 18px;font-family:inherit;font-size:14.5px;font-weight:600;transition:background .15s,color .15s;display:inline-flex}.pricing-toggle-btn:hover:not(.on){color:var(--text)}.pricing-toggle-btn.on{background:var(--ink);color:var(--on-ink-text,var(--bg))}:is([data-theme=night],[data-ec-theme=late-night]) .pricing-toggle-btn.on{color:var(--on-ink-text,#07130d)}.pricing-toggle-save{letter-spacing:.04em;background:var(--ink-soft);color:var(--ink);border-radius:999px;padding:2px 7px;font-family:IBM Plex Mono,monospace;font-size:10px}.pricing-toggle-btn.on .pricing-toggle-save{color:var(--on-ink-text,var(--bg));background:#00000038}:is([data-theme=night],[data-ec-theme=late-night]) .pricing-toggle-btn.on .pricing-toggle-save{color:var(--on-ink-text,#07130d)}.pricing-currency select{appearance:none;background:var(--surface);border:1px solid var(--border-strong);color:var(--text);cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-position:right 12px center;background-repeat:no-repeat;border-radius:10px;padding:9px 30px 9px 14px;font-family:inherit;font-size:14px;font-weight:600}.pricing-notice{text-align:center;max-width:560px;color:var(--ink);background:var(--ink-soft);border:1px solid var(--ink-border);border-radius:10px;margin:0 auto 18px;padding:10px 16px;font-size:14px}.plan-eq{min-height:18px;color:var(--text-2);margin:-8px 0 14px;font-size:13px}.plan-cta.is-muted{border:1px solid var(--border);color:var(--text-2);cursor:default;pointer-events:none;background:0 0}.pricing-page{color:var(--text);--ec-text-primary:var(--text);--ec-text-secondary:var(--text-2);--ec-on-brand-text:var(--on-ink-text,#f8f9fa)}.pricing-page a.plan-cta.btn-primary,.pricing-page button.plan-cta.btn-primary{color:var(--on-ink-text,var(--ec-on-brand-text))}.pricing-page a.plan-cta.btn-ghost,.pricing-page button.plan-cta.btn-ghost{color:var(--text)}.pricing-trust{border-top:1px dashed var(--border);flex-wrap:wrap;justify-content:center;gap:10px 22px;max-width:1040px;margin:28px auto 0;padding:18px 0 0;display:flex}.pricing-trust-item{color:var(--text-2);font-size:13.5px}@media (max-width:880px){.plans.three{grid-template-columns:1fr;max-width:460px}}@media (max-width:620px){.plans.four{grid-template-columns:1fr;max-width:460px}}.subjects-title{font-size:clamp(38px,5vw,62px)}.subjects-lead{margin-top:14px}.empty-title{margin:8px 0 6px}.empty-copy{max-width:42ch;margin:0}.tip-kicker{color:var(--ink)}.tip-copy{max-width:64ch;margin-top:6px}.hub-aside-kicker{margin-bottom:14px}.hub-tip-note{margin-top:10px;display:block;position:static;transform:rotate(-2deg)}.spine-empty-kicker{margin-bottom:6px}.spine-empty-copy{margin:6px 0 16px}.how-card-copy{margin:0;font-size:13.5px}.dash-weak-copy{margin-bottom:14px}.dash-analytics{margin-top:48px}.dash-analytics-head{margin-bottom:24px}.course-root .dash-analytics .ms-progress-tabs{background:var(--bg-soft);border-color:var(--border)}.course-root .dash-analytics .ms-progress-tab{color:var(--text-2);font-family:Instrument Sans,sans-serif}.course-root .dash-analytics .ms-progress-tab.on{background:var(--ink-soft);color:var(--ink);box-shadow:0 0 0 1px var(--ink-border)}.course-root .dash-analytics .ms-progress-tab:not(.on):hover{color:var(--ink)}.paper-tab.is-complete:not(.on){border-color:var(--ink)}@supports (color:color-mix(in lab, red, red)){.paper-tab.is-complete:not(.on){border-color:color-mix(in srgb, var(--ink) 35%, var(--border))}}.paper-tab-meta.is-complete{color:var(--ink);font-weight:600}.toc-kicker{margin-bottom:12px}.toc-progress-label{font-size:13px}.toc-sync-hint{text-align:center;margin-top:10px;line-height:1.45}.related-kicker{margin-bottom:12px}.fcard-answer-label,.diagram-live-label{color:var(--ink)}.mobile-menu a.active{color:var(--ink);padding-left:8px;font-weight:600}@keyframes mnShimmer{0%{opacity:.55}to{opacity:1}}.mn-skeleton-block,.mn-skeleton{background:var(--border);position:relative;overflow:hidden}@supports (color:color-mix(in lab, red, red)){.mn-skeleton-block,.mn-skeleton{background:color-mix(in srgb, var(--border) 55%, var(--bg-soft))}}.mn-skeleton-block,.mn-skeleton{border-radius:12px}.mn-skeleton-block:after,.mn-skeleton:after{content:"";background:linear-gradient(105deg, transparent 0%, transparent 38%, var(--acc-green,var(--ec-brand)) 50%, transparent 62%, transparent 100%);position:absolute;inset:0;transform:translate(-100%)}@supports (color:color-mix(in lab, red, red)){.mn-skeleton-block:after,.mn-skeleton:after{background:linear-gradient(105deg, transparent 0%, transparent 38%, color-mix(in srgb, var(--acc-green,var(--ec-brand)) 14%, #fff) 50%, transparent 62%, transparent 100%)}}.mn-skeleton-block:after,.mn-skeleton:after{animation:1.35s ease-in-out infinite ec-skeleton-wave}.mn-skeleton-crumb{width:140px;height:14px;margin-bottom:18px}.mn-skeleton-hero{flex:1;min-width:0;height:120px}.mn-skeleton-streak{flex-shrink:0;width:220px;height:120px}.mn-skeleton-stat{height:88px}.mn-skeleton-sheet{height:320px;margin-top:8px}.mn-skeleton-catalog-hero{height:220px;margin-bottom:8px}.mn-skeleton-continue{height:96px;margin:34px 0 30px}.mn-skeleton-filters{max-width:420px;height:40px;margin-bottom:22px}.mn-skeleton-scard{min-height:220px}.mn-skeleton-subjects-hero{height:160px;margin-bottom:24px}.mn-skeleton-subj-row{height:72px;margin-bottom:10px}.mn-skeleton-lesson-hero{height:280px;margin-bottom:20px}.mn-skeleton-modebar{height:52px;margin-bottom:16px}.mn-skeleton-toc{height:320px;display:none}.mn-skeleton-article{flex:1;min-height:480px}.mn-skeleton-hub-hero{height:240px;margin-bottom:28px}.mn-skeleton-paper-tab{min-height:72px}.pilot-banner-wrap{padding-top:12px}.dash-courses-start{cursor:default}.dash-courses-start .continue-cta{flex-shrink:0;text-decoration:none}.dash-courses-foot{text-align:center;margin-top:14px}.dash-continue-sync{margin:-6px 0 12px}.mn-skeleton-pricing-hero{height:200px;margin-bottom:28px}.mn-skeleton-plan{min-height:420px}.hub-sync-link{color:var(--ink);text-underline-offset:2px;font-weight:600;text-decoration:underline}.hub-sync-link:hover{opacity:.85}@media (min-width:1081px){.mn-skeleton-toc{display:block}.lesson-layout .mn-skeleton-toc+.mn-skeleton-article{margin-left:0}}@media (prefers-reduced-motion:reduce){.mn-skeleton-block:after,.mn-skeleton:after{animation:none}.mn-skeleton-block,.mn-skeleton{opacity:.7}}.text-main{color:var(--text)}.course-root{--course-read-text:var(--text);--course-subject-accent:var(--ink);--course-surface:var(--surface);--ec-text-primary:var(--text);--ec-text-secondary:var(--text-2);--ec-text-tertiary:var(--muted);--ec-text-faint:var(--muted);--ec-brand:var(--ink);--ec-border:var(--border);--ec-border-subtle:var(--border);--ec-surface:var(--surface);--ec-surface-raised:var(--bg-soft);--ec-surface-muted:var(--bg-soft);--ec-shadow-card:var(--shadow-card);--ec-canvas:var(--bg);--ec-on-brand-text:var(--on-ink-text)}.course-root .ms-overline{font-family:var(--font-mono,"IBM Plex Mono", monospace);letter-spacing:.14em;text-transform:uppercase;color:var(--ink);margin:0;font-size:11px;font-weight:600}.course-root .course-interactive-embed{background:var(--paper);box-shadow:none;border:none;border-radius:0;margin:0}.course-root .course-interactive-embed-head{border-bottom:1px solid var(--paper-rule);background:var(--bg-soft);padding:14px 16px 12px}.course-root .course-interactive-embed-title{font-family:var(--font-display,"Newsreader", serif);color:var(--text);margin:0;font-size:1.05rem;font-weight:500}.course-root .course-interactive-embed-hint{color:var(--text-2);font-size:.875rem;line-height:1.45}.course-root .course-interactive-embed-btn{border:1px solid var(--border);background:var(--surface);color:var(--text-2);border-radius:8px;font-size:.75rem;font-weight:600}.course-root .course-interactive-embed-btn:hover{border-color:var(--ink-border);color:var(--ink)}.course-root .course-interactive-embed-btn--primary{border-color:var(--ink-border);background:var(--ink-soft);color:var(--ink)}.course-root .course-interactive-embed-stage{background:var(--paper);width:100%;min-height:280px;position:relative}.course-root .course-interactive-embed-loading{z-index:2;text-align:center;background:var(--paper);flex-direction:column;justify-content:center;align-items:center;gap:.5rem;padding:1.25rem;display:flex;position:absolute;inset:0}.course-root .course-interactive-embed-spinner{color:var(--ink);animation:.9s linear infinite course-embed-spin}@keyframes course-embed-spin{to{transform:rotate(360deg)}}.course-root .course-interactive-embed-loading-detail,.course-root .course-interactive-embed-loading-slow{max-width:22rem;color:var(--text-2);margin:0;font-size:.75rem;line-height:1.45}.course-root .course-interactive-embed-loading-slow a{color:var(--ink);font-weight:600}.course-root .course-interactive-embed-frame{opacity:0;background:#fff;border:0;width:100%;height:100%;transition:opacity .35s;position:absolute;inset:0}.course-root .course-interactive-embed-frame.is-loaded{opacity:1}.course-root .course-interactive-embed--fullscreen{z-index:80;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#080808f5;border:0;border-radius:0;flex-direction:column;margin:0;display:flex;position:fixed;inset:0}.course-root .course-interactive-embed--fullscreen .course-interactive-embed-stage{height:auto;min-height:0;max-height:none;aspect-ratio:unset;flex:1}.course-root .course-interactive-embed-overlay-bar{border-bottom:1px solid var(--border);background:var(--surface);color:var(--text);justify-content:space-between;align-items:center;gap:.75rem;padding:.75rem 1rem;display:flex}.course-root .course-interactive-embed--diagram{flex-direction:column;display:flex}.course-root .course-interactive-embed--diagram .course-interactive-embed-toolbar{border-bottom:1px solid var(--paper-rule);background:var(--bg-soft);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.5rem .75rem;padding:8px 12px;display:flex}.course-root .course-interactive-embed--diagram .course-interactive-embed-overline{margin:0}.course-root .course-interactive-embed--diagram .course-interactive-embed-head{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:.5rem .75rem;padding:10px 12px;display:flex}.course-root .course-interactive-embed--diagram .course-interactive-embed-hint{max-width:42rem;font-size:.8125rem;line-height:1.4}.course-root .course-interactive-embed--diagram .course-interactive-embed-actions{flex-wrap:wrap;flex-shrink:0;gap:.35rem;display:flex}.course-root .course-interactive-embed--diagram .course-interactive-embed-stage{aspect-ratio:834/504;background:var(--paper);width:100%;max-width:100%;height:clamp(320px,48dvh,520px);min-height:320px;max-height:520px;margin-inline:auto}.course-root .course-interactive-embed--diagram .course-interactive-embed-meta{text-align:center;border-top:1px solid var(--paper-rule);background:var(--paper);padding:14px 16px 12px}.course-root .course-interactive-embed--diagram .course-interactive-embed-meta .course-interactive-embed-title{margin:0 0 6px;font-size:clamp(1.125rem,2.5vw,1.35rem)}.course-root .course-interactive-embed--diagram .course-interactive-embed-meta .course-interactive-embed-hint{max-width:40rem;margin:0 auto}.course-root .course-interactive-embed--diagram .course-interactive-embed-meta .course-interactive-embed-fallback-hint,.course-root .course-interactive-embed--diagram .course-interactive-embed-meta .course-interactive-embed-attribution{max-width:40rem;margin:8px auto 0}.course-root .course-interactive-embed--diagram .course-interactive-embed-loading{background:var(--paper)}.course-root .course-interactive-embed--diagram .course-interactive-embed-frame{background:#fff}.course-root .course-interactive-embed--diagram .course-interactive-embed-fallback-hint,.course-root .course-interactive-embed--diagram .course-interactive-embed-attribution{padding:8px 12px 10px;font-size:.68rem;line-height:1.4}.course-root .diagram-stage .course-step-stage-diagram{max-width:100%;overflow:auto hidden}.course-root .diagram-stage .lesson-diagram-svg{width:100%;max-width:100%;height:auto;max-height:min(52dvh,440px);display:block}.course-root .diagram-stage .course-diagram-params{max-width:100%;padding:0 12px 10px;overflow-x:auto}.course-root .formula-eq .course-rich-text--formula,.course-root .formula-eq .katex,.course-root .formula-eq .katex-display{color:var(--text)}.course-root .formula-hint{color:var(--text-2)}.course-root .course-interactive-embed-loading,.course-root .course-interactive-embed-fallback-hint,.course-root .course-interactive-embed-attribution{color:var(--text-2);background:var(--paper)}.course-root .course-interactive-embed-loading-title{color:var(--text)}.course-root .course-interactive-embed-loading a,.course-root .course-interactive-embed-fallback-hint a{color:var(--ink)}.course-root .diagram-wrap .course-step-stage-label,.course-root .diagram-wrap .lesson-diagram-caption,.course-root .diagram-wrap .lesson-diagram-attribution{display:none}.course-root .diagram-wrap .course-step-stage-visual{padding:0}.course-root .diagram-wrap .course-step-stage-diagram{background:linear-gradient(var(--paper-rule) 1px, transparent 1px), linear-gradient(90deg, var(--paper-rule) 1px, transparent 1px), var(--bg-soft);background-size:24px 24px,24px 24px,auto;border:none;border-radius:0;padding:8px 12px 4px}.course-root .diagram-wrap .lesson-diagram-svg{filter:drop-shadow(0 1px #0000000a)}.course-root .diagram-wrap .wal-error-bar-diagram-tabs{border-bottom:1px solid var(--paper-rule);background:var(--bg-soft);gap:8px;padding:10px 14px 0;display:flex}.course-root .diagram-wrap .equilibrium-forces-diagram-tabs button{font-family:var(--font-mono,"IBM Plex Mono", monospace);letter-spacing:.04em;text-transform:uppercase;border:1px solid var(--border);background:var(--surface);color:var(--text-2);cursor:pointer;border-radius:999px;padding:6px 12px;font-size:11px}.course-root .diagram-wrap .equilibrium-forces-diagram-tabs button.is-active{border-color:var(--ink);background:var(--ink-soft);color:var(--ink)}.lesson-obj-text{min-width:0;color:var(--text-2);flex:1;font-size:15px;line-height:1.45}.course-root .course-step-stage-visual{background:0 0;border:none;border-radius:0;padding:12px 14px 16px}.course-root .course-step-stage-label{color:var(--ink);font-size:11px}.course-root .course-step-stage-step-badge{background:var(--ink-soft);color:var(--ink)}.course-root .course-step-stage-diagram{border:1px solid var(--border);background:var(--surface);border-radius:8px}.course-root .course-step-stage-caption-text{color:var(--text-2)}.course-root .course-step-stage-formula{color:var(--text)}.course-root .course-diagram-params{border:1px solid var(--border);background:var(--bg-soft)}.course-root .course-diagram-param-label{color:var(--text-2)}.course-root .course-diagram-param-value{color:var(--text)}.course-root .course-diagram-param-slider{accent-color:var(--ink)}.course-root .lesson-diagram-svg text{fill:var(--text)}.course-root .lesson-diagram-svg g{transition:opacity .38s}.course-root .lesson-diagram-svg [stroke]{stroke:var(--ink)}.reading-progress{z-index:60;pointer-events:none;background:0 0;height:3px;position:fixed;top:0;left:0;right:0}.reading-progress span{height:100%;width:var(--reading-pct,0);background:linear-gradient(90deg, var(--ink), var(--ink));display:block}@supports (color:color-mix(in lab, red, red)){.reading-progress span{background:linear-gradient(90deg, var(--ink), color-mix(in srgb, var(--ink) 55%, var(--reading-accent,var(--acc-lesson,var(--hub-acc,var(--acc-violet))))))}}.reading-progress span{box-shadow:0 0 8px var(--ink-soft);transition:width .12s linear}.reading-progress[style*=--reading-accent] span{background:linear-gradient(90deg, var(--reading-accent), var(--reading-accent))}@supports (color:color-mix(in lab, red, red)){.reading-progress[style*=--reading-accent] span{background:linear-gradient(90deg, var(--reading-accent), color-mix(in srgb, var(--reading-accent) 45%, var(--ink)))}}@media (prefers-reduced-motion:no-preference){.lsec{animation:.52s cubic-bezier(.4,0,.2,1) both secUp}@keyframes secUp{0%{transform:translateY(14px)}to{transform:translateY(0)}}}.lsec-head{position:relative}.lsec-k{align-items:center;gap:10px;display:inline-flex}.lsec-k:after{content:"";background:var(--ink);opacity:.5;width:34px;height:1.5px;display:inline-block}.scard:before{content:"";background:var(--acc);transform-origin:0;z-index:2;height:3px;transition:transform .22s cubic-bezier(.4,0,.2,1);position:absolute;top:0;left:0;right:0;transform:scaleX(0)}.scard:hover:before{transform:scaleX(1)}.scard-glyph{transition:transform .22s cubic-bezier(.4,0,.2,1)}.scard:hover .scard-glyph{transform:translateY(-2px)rotate(-3deg)}.subj-row{position:relative;overflow:hidden}.subj-row:before{content:"";background:var(--acc);width:3px;transition:transform .2s;position:absolute;top:0;bottom:0;left:0;transform:scaleY(0)}.subj-row:hover:before{transform:scaleY(1)}@media (prefers-reduced-motion:no-preference){.hub-glyph{animation:6s ease-in-out infinite glyphFloat}@keyframes glyphFloat{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}}button:focus-visible,a:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:6px}@media (prefers-reduced-motion:reduce){.step-card:hover,.step-card.on,.practice-stack .practice:hover,.pn-btn:hover,.pn-btn.right:hover,.related-card:hover,.gloss:hover,.plan:hover,.dash-stat:hover,.complete-btn:hover,.formula-card:hover,.worked-stack .worked:hover,.qc:hover,.qc.on{transform:none}.dash-mark:hover{margin-left:0;margin-right:0;padding-left:0;padding-right:0}}@media (max-width:1080px){.lesson-layout{grid-template-columns:1fr}.lesson-toc{display:none}.lesson-mobile-jump{display:flex}.lesson-article{max-width:none}.hub-cols{grid-template-columns:1fr}.hub-aside{flex-flow:wrap;position:static}.hub-aside>*{flex:1;min-width:260px}.dash-cols{grid-template-columns:1fr}.dash-aside{flex-flow:wrap;position:static}.dash-aside>*{flex:1;min-width:260px}}@media (max-width:860px){.nav-links,.cmdk-btn span,.cmdk-btn kbd{display:none}.burger{display:block}.catalog-hero,.hub-hero-inner,.lesson-hero{grid-template-columns:1fr;gap:28px}.lesson-hero-side,.hub-aside{position:static}.visual-grid,.cmap,.formula-row{grid-template-columns:1fr}.paper-tabs{grid-template-columns:1fr 1fr}.lesson-objlist ol,.gloss-grid,.takeaways,.simple-steps,.prevnext,.related-grid{grid-template-columns:1fr}.hub-hero-left{flex-direction:column;gap:12px}.hub-glyph{font-size:64px}.dash-hero{grid-template-columns:1fr}.dash-stats{grid-template-columns:1fr 1fr}.plans{grid-template-columns:1fr}.subj-row{grid-template-columns:44px 1fr auto;gap:12px}.subj-tags,.subj-links{display:none}}@media (max-width:520px){.catalog-hero-meta{grid-template-columns:1fr 1fr 1fr}.pg{padding:0 18px}.lesson-modebar{padding:12px 18px}.hub-hero{padding:28px 0}.hub-hero-title{font-size:clamp(28px,8vw,40px)}.hub-cta-row{flex-direction:column;align-items:stretch;gap:10px}.hub-cta-row .btn-primary,.hub-cta-row .btn-ghost{width:100%;min-height:var(--ec-touch-min,44px);justify-content:center}.paper-tabs{-webkit-overflow-scrolling:touch;scrollbar-width:none;grid-template-columns:unset;gap:8px;display:flex;overflow-x:auto}.paper-tabs::-webkit-scrollbar{display:none}.paper-tab{flex:none;min-width:140px}.hub-aside{flex-direction:column}.hub-aside>*{flex:auto;width:100%;min-width:0}.hub-prog{flex-direction:column;align-items:flex-start;gap:12px}.ms-pp-grid{grid-template-columns:1fr}.course-root .course-interactive-embed--diagram .course-interactive-embed-stage{height:clamp(260px,44dvh,440px);min-height:260px;max-height:440px}.course-root .course-interactive-embed--diagram .course-interactive-embed-hint{display:none}.formula-card{padding:16px}}a.scard,a.continue,a.topic-row,a.pn-btn,a.related-card,a.subj-row,a.dash-course,a.dash-mark-link{color:inherit;text-decoration:none}.cmp-table-block{flex-direction:column;gap:14px;display:flex}.cmp-caption{color:var(--text-2);max-width:58ch;margin:0}.cmp-caption p{margin:0}.cmp-table-wrap{border:1px solid var(--border);background:var(--surface);border-radius:12px;overflow-x:auto}.cmp-table{border-collapse:separate;border-spacing:0;width:100%;min-width:480px;font-size:14.5px}.cmp-table thead th{text-align:left;letter-spacing:.06em;text-transform:uppercase;color:var(--ink);background:var(--ink-soft);border-bottom:1px solid var(--border);padding:12px 16px;font-family:IBM Plex Mono,monospace;font-size:11px;font-weight:600}.cmp-table tbody th.cmp-prop{text-align:left;color:var(--text);background:var(--bg-soft);border-bottom:1px solid var(--border);vertical-align:top;padding:12px 16px;font-weight:600}.cmp-table td{color:var(--text-2);border-bottom:1px solid var(--border);vertical-align:top;padding:12px 16px}.cmp-table tbody tr:nth-child(2n) td,.cmp-table tbody tr:nth-child(2n) th.cmp-prop{background:var(--bg-soft)}@supports (color:color-mix(in lab, red, red)){.cmp-table tbody tr:nth-child(2n) td,.cmp-table tbody tr:nth-child(2n) th.cmp-prop{background:color-mix(in srgb, var(--bg-soft) 60%, transparent)}}.cmp-cards{gap:10px;display:none}@media (max-width:640px){.cmp-table-wrap{display:none}.cmp-cards{flex-direction:column;display:flex}}.cmp-card-title{margin:0 0 10px;font-size:18px}.cmp-card-row+.cmp-card-row{border-top:1px dashed var(--border);margin-top:10px;padding-top:10px}.cmp-card-label{color:var(--ink);margin:0 0 4px}.cmp-card-value{color:var(--text-2);margin:0}.pricing-hero{text-align:center;padding:28px 0 8px}.pricing-hero .overline{display:block}.pricing-controls{margin:26px 0 30px}.pricing-toggle{background:var(--bg-soft);border:1px solid var(--border);gap:2px;padding:5px;box-shadow:inset 0 1px 3px #0000000d}.pricing-toggle-btn{padding:9px 20px}.pricing-toggle-btn.on{box-shadow:0 2px 10px var(--ink)}@supports (color:color-mix(in lab, red, red)){.pricing-toggle-btn.on{box-shadow:0 2px 10px color-mix(in srgb, var(--ink) 30%, transparent)}}.plans.four{align-items:stretch;gap:18px}@media (min-width:1024px){.plans.four .plan.featured{z-index:1;transform:scale(1.045)}.plans.four .plan.featured:hover{transform:scale(1.045)translateY(-3px)}}.plan-tag{align-items:center;gap:7px;display:inline-flex}.plan-tag:before{content:"";background:var(--plan-acc,var(--ink));border-radius:999px;flex-shrink:0;width:8px;height:8px}.plans.four .plan-now{letter-spacing:-.02em;font-size:38px}.plan-per{font-family:IBM Plex Mono,monospace;font-size:12.5px}.pricing-trust{border-top:none;gap:10px 12px;margin-top:26px;padding-top:0}.pricing-trust-item{color:var(--text-2);background:var(--surface);border:1px solid var(--border);border-radius:999px;align-items:center;gap:7px;padding:7px 14px;font-size:12.5px;display:inline-flex}.pricing-trust-icon{width:14px;height:14px;color:var(--ink);flex-shrink:0}.pricing-value-strip{margin-top:52px}.ms-plan-matrix-wrap{background:var(--surface);border:1px solid var(--border);border-radius:var(--ec-radius-card-lg,20px);box-shadow:var(--shadow-card);padding:12px 22px 16px}.ms-plan-matrix tbody tr:hover td,.ms-plan-matrix tbody tr:hover th.ms-matrix-feat{background:var(--ink)}@supports (color:color-mix(in lab, red, red)){.ms-plan-matrix tbody tr:hover td,.ms-plan-matrix tbody tr:hover th.ms-matrix-feat{background:color-mix(in srgb, var(--ink) 3%, transparent)}}@media (max-width:640px){.ms-plan-matrix-wrap{padding:6px 10px 10px}}.plan-trial-pill.is-empty{display:none}@media (min-width:621px){.plan-trial-pill.is-empty{visibility:hidden;display:inline-block}}@supports (grid-template-rows:subgrid){@media (min-width:621px){.plans.four .plan{grid-template-rows:subgrid;grid-row:span 10;align-content:start;display:grid}.plans.four .plan .plan-cta{align-self:end;margin-top:0}}}.plans.four .plan{padding:20px 18px 22px}.plans.four .plan-blurb{font-size:13.5px;line-height:1.5}.plans.four .plan-feats{gap:9px;margin-top:16px;padding-top:16px}.plan-killer{margin-bottom:14px;padding:10px 12px;font-size:13px}.plan-cta{min-height:46px}.plan-bestfor{margin:-6px 0 12px}.course-root button:not(:disabled),.course-root [role=button]:not([aria-disabled=true]),.course-root a.btn-primary,.course-root a.btn-ghost,.course-root .fpart,.course-root .fsym,.course-root .cmap-node,.course-root .fcard,.course-root .worked-reveal,.course-root .course-worked-reveal-btn,.course-root .paper-tab,.course-root .mode-tab,.course-root .cmdk-btn,.course-root .theme-flip,.course-root .burger{transition:transform .14s cubic-bezier(.2,0,0,1),background .14s,box-shadow .14s,border-color .14s,filter .14s}.course-root .btn-primary:active:not(:disabled),.course-root .btn-primary.mn-tapped{transform:scale(.97)translateY(1px);box-shadow:inset 0 2px 10px #0000002e}.course-root .btn-ghost:active:not(:disabled),.course-root .btn-ghost.mn-tapped,.course-root .worked-reveal:active:not(:disabled),.course-root .worked-reveal.mn-tapped,.course-root .course-worked-reveal-btn:active:not(:disabled),.course-root .course-worked-reveal-btn.mn-tapped{background:var(--bg-soft);transform:scale(.97);box-shadow:inset 0 2px 8px #0000001a}.course-root .fpart:active:not(:disabled),.course-root .fpart.mn-tapped,.course-root .fsym:active:not(:disabled),.course-root .fsym.mn-tapped{background:var(--ink-soft);transform:scale(.98)}.course-root .fpart.on.mn-tapped,.course-root .fsym.on.mn-tapped{filter:brightness(.92)}.course-root .cmap-node:active:not(:disabled),.course-root .cmap-node.mn-tapped,.course-root .paper-tab:active:not(:disabled),.course-root .paper-tab.mn-tapped,.course-root .mode-tab:active:not(:disabled),.course-root .mode-tab.mn-tapped{transform:scale(.98)}.course-root .fcard:active,.course-root .fcard.mn-tapped{transform:scale(.985)}.course-root .cmdk-btn:active,.course-root .cmdk-btn.mn-tapped,.course-root .theme-flip:active,.course-root .theme-flip.mn-tapped,.course-root .burger:active,.course-root .burger.mn-tapped{transform:scale(.94)}.course-root .gloss:active:not(:disabled),.course-root .gloss.mn-tapped,.course-root .qc:active:not(:disabled),.course-root .qc.mn-tapped,.course-root .fc-arrow:active:not(:disabled),.course-root .fc-arrow.mn-tapped,.course-root .practice-scheme-toggle:active:not(:disabled),.course-root .practice-scheme-toggle.mn-tapped{transform:scale(.98)}.course-root .gloss.mn-tapped,.course-root .qc.mn-tapped{background:var(--ink-soft);border-color:var(--ink-border)}.course-root .fc-arrow.mn-tapped{border-color:var(--ink);color:var(--ink)}.course-root .worked-reveal[aria-busy=true],.course-root .course-worked-reveal-btn[aria-busy=true]{opacity:.72;pointer-events:none;cursor:wait}@media (prefers-reduced-motion:reduce){.course-root .mn-tapped,.course-root button:active:not(:disabled),.course-root [role=button]:active:not([aria-disabled=true]){filter:brightness(.94);transform:none!important}}.ec-btn-primary.ec-tapped:not(:disabled):not([data-loading=true]),.ec-btn-secondary.ec-tapped:not(:disabled):not([data-loading=true]),.ec-btn-ghost.ec-tapped:not(:disabled):not([data-loading=true]),.ec-btn-danger.ec-tapped:not(:disabled):not([data-loading=true]),a.ec-btn-primary.ec-tapped,a.ec-btn-secondary.ec-tapped,a.ec-btn-ghost.ec-tapped,a.ec-btn-warm.ec-tapped,.ec-btn-warm.ec-tapped:not(:disabled):not([data-loading=true]){filter:brightness(.95);box-shadow:inset 0 2px 10px #00000024;transform:scale(.98)translateY(0)!important}.ec-nav-link.ec-tapped,.ec-nav-context.ec-tapped,a.ec-wordmark-link.ec-tapped,button.ec-cmdk-btn.ec-tapped,.ec-theme-flip.ec-tapped,button.notif-bell.ec-tapped,.ec-avatar-btn.ec-tapped,.ec-pill.ec-tapped,.ec-mobile-tab-bar a.ec-tapped,.ec-tabbar a.ec-tapped{filter:brightness(.94);transform:scale(.96)}a.ec-wordmark-link.ec-tapped .ec-wordmark-dot{text-shadow:0 0 16px var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){a.ec-wordmark-link.ec-tapped .ec-wordmark-dot{text-shadow:0 0 16px color-mix(in srgb, var(--ec-brand) 70%, transparent)}}@media (prefers-reduced-motion:reduce){.ec-tapped{filter:brightness(.92);transform:none!important}}html[data-ec-theme=zen] .course-root .text-white,html[data-ec-theme=zen] .course-root .text-white\/90,html[data-ec-theme=zen] .course-root .text-white\/80,html[data-ec-theme=zen] .course-root .text-slate-100,html[data-ec-theme=zen] .course-root .text-slate-200,html[data-ec-theme=zen] .course-root .text-slate-300,html[data-ec-theme=zen] .course-root .text-gray-100,html[data-ec-theme=zen] .course-root .text-gray-200,html[data-ec-theme=zen] .course-root .text-gray-300,html[data-ec-theme=zen] .course-root .text-neutral-100,html[data-ec-theme=zen] .course-root .text-neutral-200{color:var(--text)!important}html[data-ec-theme=zen] .course-root .text-slate-400,html[data-ec-theme=zen] .course-root .text-slate-500,html[data-ec-theme=zen] .course-root .text-gray-400,html[data-ec-theme=zen] .course-root .text-gray-500,html[data-ec-theme=zen] .course-root .text-neutral-400,html[data-ec-theme=zen] .course-root .text-neutral-500{color:var(--text-2)!important}html[data-ec-theme=zen] .course-root,html[data-ec-theme=zen] .course-root .katex,html[data-ec-theme=zen] .course-root .katex .base,html[data-ec-theme=zen] .course-root .katex .strut,html[data-ec-theme=zen] .course-root .katex .mord,html[data-ec-theme=zen] .course-root .katex .mop,html[data-ec-theme=zen] .course-root .katex .mbin,html[data-ec-theme=zen] .course-root .katex .mrel,html[data-ec-theme=zen] .course-root .katex .mopen,html[data-ec-theme=zen] .course-root .katex .mclose,html[data-ec-theme=zen] .course-root .katex .mpunct{color:var(--text)}html[data-ec-theme=zen] .course-root .katex-display{color:var(--text);background:var(--surface);border-color:var(--border)}html[data-ec-theme=zen] .course-root .course-rich-text,html[data-ec-theme=zen] .course-root .course-rich-text--prose,html[data-ec-theme=zen] .course-root .course-rich-text--inline,html[data-ec-theme=zen] .course-root .course-rich-text--formula,html[data-ec-theme=zen] .course-root .course-rich-text--flashcard{color:var(--text)}html[data-ec-theme=late-night] .course-root .text-black,html[data-ec-theme=late-night] .course-root .text-gray-900,html[data-ec-theme=late-night] .course-root .text-gray-800,html[data-ec-theme=late-night] .course-root .text-gray-700,html[data-ec-theme=late-night] .course-root .text-neutral-900,html[data-ec-theme=late-night] .course-root .text-neutral-800,html[data-ec-theme=late-night] .course-root .text-slate-900,html[data-ec-theme=late-night] .course-root .text-slate-800,html[data-ec-theme=late-night] .course-root .text-slate-700,html[data-ec-theme=late-night] .course-root .text-\[\#25221b\],html[data-ec-theme=late-night] .course-root .text-\[\#1f1f1f\]{color:var(--text)!important}html[data-ec-theme=late-night] .course-root .text-gray-600,html[data-ec-theme=late-night] .course-root .text-gray-500,html[data-ec-theme=late-night] .course-root .text-neutral-600,html[data-ec-theme=late-night] .course-root .text-neutral-500,html[data-ec-theme=late-night] .course-root .text-slate-600,html[data-ec-theme=late-night] .course-root .text-slate-500{color:var(--text-2)!important}html[data-ec-theme=late-night] .course-root,html[data-ec-theme=late-night] .course-root .katex,html[data-ec-theme=late-night] .course-root .katex .base,html[data-ec-theme=late-night] .course-root .katex .strut,html[data-ec-theme=late-night] .course-root .katex .mord,html[data-ec-theme=late-night] .course-root .katex .mop,html[data-ec-theme=late-night] .course-root .katex .mbin,html[data-ec-theme=late-night] .course-root .katex .mrel,html[data-ec-theme=late-night] .course-root .katex .mopen,html[data-ec-theme=late-night] .course-root .katex .mclose,html[data-ec-theme=late-night] .course-root .katex .mpunct{color:var(--text)}html[data-ec-theme=late-night] .course-root .katex-display{color:var(--text);background:var(--surface);border-color:var(--border)}html[data-ec-theme=late-night] .course-root .course-rich-text,html[data-ec-theme=late-night] .course-root .course-rich-text--prose,html[data-ec-theme=late-night] .course-root .course-rich-text--inline,html[data-ec-theme=late-night] .course-root .course-rich-text--formula,html[data-ec-theme=late-night] .course-root .course-rich-text--flashcard{color:var(--text)}html[data-ec-theme=late-night] .course-root .lesson-diagram-svg text{fill:var(--text)}html[data-ec-theme=late-night] .course-root .lesson-diagram-svg [stroke]{stroke:var(--text-2)}html[data-ec-theme=zen] .course-root .lesson-diagram-svg text{fill:var(--text)}.course-root .lesson-sheet-meta,.course-root .sheet-head,.course-root .paper-tab-meta,.course-root .chip.dim,.course-root .scheme-cite,.course-root .objlist-kicker,.course-root .diagram-step-label{color:var(--text-2)}html[data-ec-theme=zen] .course-root .lesson-diagram-svg [stroke]{stroke:var(--ink)}[data-ec-theme=late-night]{--ec-mesh-math:var(--ec-c-math)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=late-night]{--ec-mesh-math:color-mix(in srgb, var(--ec-c-math) 28%, transparent)}}[data-ec-theme=late-night]{--ec-mesh-phys:var(--ec-c-phys)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=late-night]{--ec-mesh-phys:color-mix(in srgb, var(--ec-c-phys) 26%, transparent)}}[data-ec-theme=late-night]{--ec-mesh-chem:var(--ec-c-chem)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=late-night]{--ec-mesh-chem:color-mix(in srgb, var(--ec-c-chem) 26%, transparent)}}[data-ec-theme=late-night]{--ec-mesh-bio:var(--ec-c-bio)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=late-night]{--ec-mesh-bio:color-mix(in srgb, var(--ec-c-bio) 24%, transparent)}}[data-ec-theme=late-night]{--ec-mesh-hum:var(--ec-c-hum)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=late-night]{--ec-mesh-hum:color-mix(in srgb, var(--ec-c-hum) 24%, transparent)}}[data-ec-theme=late-night]{--ec-section-tint-mark:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=late-night]{--ec-section-tint-mark:color-mix(in srgb, var(--ec-brand) 14%, transparent)}}[data-ec-theme=late-night]{--ec-section-tint-learn:var(--ec-accent-warm)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=late-night]{--ec-section-tint-learn:color-mix(in srgb, var(--ec-accent-warm) 16%, transparent)}}[data-ec-theme=late-night]{--ec-section-tint-discuss:var(--ec-acc-violet)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=late-night]{--ec-section-tint-discuss:color-mix(in srgb, var(--ec-acc-violet) 14%, transparent)}}[data-ec-theme=late-night]{--ec-gradient-hero:radial-gradient(520px circle at 88% 6%, var(--ec-mesh-math) 0%, transparent 58%), radial-gradient(480px circle at 8% 18%, var(--ec-mesh-phys) 0%, transparent 55%), radial-gradient(400px circle at 72% 88%, var(--ec-section-tint-mark) 0%, transparent 62%);--ec-gradient-card-hover:linear-gradient(135deg, var(--ec-brand) 0%, var(--ec-surface) 100%)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=late-night]{--ec-gradient-card-hover:linear-gradient(135deg, color-mix(in srgb, var(--ec-brand) 12%, var(--ec-surface)) 0%, var(--ec-surface) 100%)}}[data-ec-theme=late-night]{--ec-ink-splash:var(--ec-brand);--ec-shimmer-highlight:#ffffff59;--ec-btn-loading-track:#ffffff1f}[data-ec-theme=zen]{--ec-mesh-math:var(--ec-c-math)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=zen]{--ec-mesh-math:color-mix(in srgb, var(--ec-c-math) 22%, transparent)}}[data-ec-theme=zen]{--ec-mesh-phys:var(--ec-c-phys)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=zen]{--ec-mesh-phys:color-mix(in srgb, var(--ec-c-phys) 20%, transparent)}}[data-ec-theme=zen]{--ec-mesh-chem:var(--ec-c-chem)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=zen]{--ec-mesh-chem:color-mix(in srgb, var(--ec-c-chem) 20%, transparent)}}[data-ec-theme=zen]{--ec-mesh-bio:var(--ec-c-bio)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=zen]{--ec-mesh-bio:color-mix(in srgb, var(--ec-c-bio) 18%, transparent)}}[data-ec-theme=zen]{--ec-mesh-hum:var(--ec-c-hum)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=zen]{--ec-mesh-hum:color-mix(in srgb, var(--ec-c-hum) 18%, transparent)}}[data-ec-theme=zen]{--ec-section-tint-mark:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=zen]{--ec-section-tint-mark:color-mix(in srgb, var(--ec-brand) 10%, transparent)}}[data-ec-theme=zen]{--ec-section-tint-learn:var(--ec-accent-warm)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=zen]{--ec-section-tint-learn:color-mix(in srgb, var(--ec-accent-warm) 12%, transparent)}}[data-ec-theme=zen]{--ec-section-tint-discuss:var(--ec-acc-violet)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=zen]{--ec-section-tint-discuss:color-mix(in srgb, var(--ec-acc-violet) 10%, transparent)}}[data-ec-theme=zen]{--ec-gradient-hero:radial-gradient(520px circle at 88% 6%, var(--ec-mesh-math) 0%, transparent 58%), radial-gradient(480px circle at 8% 18%, var(--ec-mesh-phys) 0%, transparent 55%), radial-gradient(400px circle at 72% 88%, var(--ec-section-tint-mark) 0%, transparent 62%);--ec-gradient-card-hover:linear-gradient(135deg, var(--ec-brand) 0%, var(--ec-surface) 100%)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=zen]{--ec-gradient-card-hover:linear-gradient(135deg, color-mix(in srgb, var(--ec-brand) 8%, var(--ec-surface)) 0%, var(--ec-surface) 100%)}}[data-ec-theme=zen]{--ec-ink-splash:var(--ec-brand-deep);--ec-shimmer-highlight:#ffffff8c;--ec-btn-loading-track:#00000014}.ec-page-mesh{isolation:isolate;position:relative}.ec-page-mesh:before{content:"";z-index:-1;pointer-events:none;background:var(--ec-gradient-hero);opacity:1;position:absolute;inset:0}.ec-page-mesh--dual:before{background:radial-gradient(440px circle at 12% 92%, var(--ec-mesh-hum) 0%, transparent 58%), radial-gradient(380px circle at 92% 12%, var(--ec-mesh-chem) 0%, transparent 55%), var(--ec-gradient-hero)}.ec-section-tint{isolation:isolate;position:relative}.ec-section-tint:before{content:"";z-index:-1;pointer-events:none;border-radius:inherit;position:absolute;inset:0}.ec-section-tint--mark:before{background:linear-gradient(180deg, var(--ec-section-tint-mark) 0%, transparent 72%)}.ec-section-tint--learn:before{background:linear-gradient(180deg, var(--ec-section-tint-learn) 0%, transparent 72%)}.ec-section-tint--discuss:before{background:linear-gradient(180deg, var(--ec-section-tint-discuss) 0%, transparent 72%)}.ec-gradient-text{background:linear-gradient(120deg, var(--ec-brand-deep) 0%, var(--ec-c-phys) 42%, var(--ec-c-chem) 78%, var(--ec-accent-warm-deep) 100%);color:#0000;-webkit-background-clip:text;background-clip:text}[data-ec-theme=late-night] .ec-gradient-text{background:linear-gradient(120deg, var(--ec-brand) 0%, var(--ec-c-phys) 40%, var(--ec-c-chem) 75%, var(--ec-accent-warm) 100%);color:#0000;-webkit-background-clip:text;background-clip:text}.ec-kicker-accent{display:inline-block;position:relative}.ec-kicker-accent:after{content:"";background:linear-gradient(90deg, var(--ec-c-math), var(--ec-c-phys), var(--ec-c-bio));opacity:.85;border-radius:2px;height:3px;position:absolute;bottom:-4px;left:0;right:0}.ec-btn-loading-wrap,.ec-btn-shimmer{position:relative;overflow:hidden}.ec-btn-shimmer:after{content:"";z-index:1;pointer-events:none;background:linear-gradient(105deg, transparent 0%, transparent 32%, var(--ec-shimmer-highlight) 50%, transparent 68%, transparent 100%);position:absolute;inset:-2px 0}@supports (color:color-mix(in lab, red, red)){.ec-btn-shimmer:after{background:linear-gradient(105deg, transparent 0%, transparent 32%, color-mix(in srgb, var(--ec-shimmer-highlight) 88%, #fff) 50%, transparent 68%, transparent 100%)}}.ec-btn-shimmer:after{animation:.95s ease-in-out infinite ec-btn-shimmer-sweep;transform:translate(-130%)}.ec-loading-dots{flex-shrink:0;align-items:center;gap:4px;display:inline-flex}.ec-loading-dots span{opacity:.45;background:currentColor;border-radius:50%;width:5px;height:5px;animation:.9s ease-in-out infinite ec-loading-dot-bounce}.ec-loading-dots span:nth-child(2){animation-delay:.14s}.ec-loading-dots span:nth-child(3){animation-delay:.28s}@keyframes ec-loading-dot-bounce{0%,80%,to{opacity:.35;transform:translateY(0)scale(.85)}40%{opacity:1;transform:translateY(-3px)scale(1)}}.ec-btn-progress-track{background:var(--ec-btn-loading-track);border-radius:0 0 var(--ec-radius-button) var(--ec-radius-button);height:3px;position:absolute;bottom:0;left:0;right:0;overflow:hidden}.ec-btn-progress-fill{background:var(--ec-shimmer-highlight);height:100%;animation:2s ease-out forwards ec-btn-progress-fill}@keyframes ec-inline-saving-pulse{0%,to{opacity:.35;transform:scale(.85)}50%{opacity:1;transform:scale(1)}}.ec-inline-saving{background:var(--ec-brand);border-radius:50%;width:8px;height:8px;animation:1s ease-in-out infinite ec-inline-saving-pulse;display:inline-block}.ec-btn-pulse-ring{border:2px solid var(--ec-brand);border-radius:50%;width:10px;height:10px;margin-top:-5px;animation:1s ease-out infinite ec-btn-pulse-ring;position:absolute;top:50%;right:10px}@keyframes ec-btn-shimmer-sweep{to{transform:translate(120%)}}@keyframes ec-btn-progress-fill{0%{width:0%}to{width:92%}}@keyframes ec-btn-pulse-ring{0%{opacity:1;transform:scale(.6)}to{opacity:0;transform:scale(1.8)}}@media (prefers-reduced-motion:reduce){.ec-btn-shimmer:after,.ec-btn-progress-fill,.ec-btn-pulse-ring,.ec-inline-saving,.ec-loading-dots span,.ec-btn-primary.ec-btn-is-loading,.ec-btn-primary[data-loading=true]{animation:none}.ec-btn-shimmer:after{opacity:.2;transform:none}.ec-btn-progress-fill{width:60%}}.ms-pillar--mark .ms-pillar-band{background:linear-gradient(135deg, var(--ec-brand) 0%, var(--ec-brand) 100%)}@supports (color:color-mix(in lab, red, red)){.ms-pillar--mark .ms-pillar-band{background:linear-gradient(135deg, color-mix(in srgb, var(--ec-brand) 72%, var(--ec-canvas)) 0%, var(--ec-brand) 100%)}}.ms-pillar--learn .ms-pillar-band{background:linear-gradient(135deg, var(--ec-accent-warm) 0%, var(--ec-accent-warm) 100%)}@supports (color:color-mix(in lab, red, red)){.ms-pillar--learn .ms-pillar-band{background:linear-gradient(135deg, color-mix(in srgb, var(--ec-accent-warm) 72%, var(--ec-canvas)) 0%, var(--ec-accent-warm) 100%)}}.ms-pillar--discuss .ms-pillar-band{background:linear-gradient(135deg, var(--ec-acc-violet) 0%, var(--ec-acc-violet) 100%)}@supports (color:color-mix(in lab, red, red)){.ms-pillar--discuss .ms-pillar-band{background:linear-gradient(135deg, color-mix(in srgb, var(--ec-acc-violet) 72%, var(--ec-canvas)) 0%, var(--ec-acc-violet) 100%)}}.ms-pillar-band{border-radius:13px 13px 0 0;margin:-28px -26px 16px;padding:22px 26px 18px;position:relative;overflow:hidden}.ms-pillar-band .ms-pillar-watermark{font-family:var(--font-display,"Newsreader", Georgia, serif);opacity:.22;color:var(--ec-paper);pointer-events:none;-webkit-user-select:none;user-select:none;font-size:72px;font-weight:600;line-height:1;position:absolute;top:50%;right:12px;transform:translateY(-50%)}[data-ec-theme=late-night] .ms-pillar-band .ms-pillar-watermark{color:#14120d;opacity:.18}.ms-pillar--featured{border-color:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ms-pillar--featured{border-color:color-mix(in srgb, var(--ec-brand) 45%, var(--ec-border))}}.ms-pillar--featured{box-shadow:var(--ec-card-shadow), 0 0 0 1px var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){.ms-pillar--featured{box-shadow:var(--ec-card-shadow), 0 0 0 1px color-mix(in srgb, var(--ec-brand) 18%, transparent)}}.pricing-card--featured{position:relative;overflow:hidden}.pricing-card--featured:before{content:"";background:linear-gradient(90deg, var(--ec-brand), var(--ec-c-phys), var(--ec-c-chem));height:5px;position:absolute;top:0;left:0;right:0}.pricing-card-mesh{position:relative}.pricing-card-mesh:after{content:"";pointer-events:none;background:radial-gradient(280px circle at 100% 0%, var(--ec-section-tint-mark) 0%, transparent 70%);border-radius:inherit;position:absolute;inset:0}.catalog-hero-meta .hero-stat:first-child b{color:var(--ec-brand)}.catalog-hero-meta .hero-stat:nth-child(2) b{color:var(--ec-c-phys)}.catalog-hero-meta .hero-stat:nth-child(3) b{color:var(--ec-accent-warm-deep,var(--ec-accent-warm))}.catalog-grid .scard:hover{box-shadow:var(--ec-card-hover-shadow)}.ms-course-card{border-left:3px solid var(--ec-c-phys)}.ms-mark-upload-zone.ec-section-tint--learn:before{border-radius:var(--ec-radius-card)}.ec-nav-progress{z-index:9998;pointer-events:none;background:var(--ec-border);height:3px;position:fixed;top:0;left:0;right:0}@supports (color:color-mix(in lab, red, red)){.ec-nav-progress{background:color-mix(in srgb, var(--ec-border) 35%, transparent)}}.ec-nav-progress{overflow:hidden}.ec-nav-progress-bar{background:linear-gradient(90deg, var(--ec-c-math), var(--ec-brand), var(--ec-c-phys), var(--ec-c-chem), var(--ec-accent-warm));width:0;height:100%;box-shadow:0 0 12px var(--ec-brand);background-size:200% 100%;border-radius:0 3px 3px 0;transition:width .28s cubic-bezier(.22,1,.36,1);animation:1.1s linear infinite ec-nav-progress-shift}@supports (color:color-mix(in lab, red, red)){.ec-nav-progress-bar{box-shadow:0 0 12px color-mix(in srgb, var(--ec-brand) 45%, transparent)}}.ec-nav-progress--complete .ec-nav-progress-bar{transition:width .22s ease-out;animation:none}@keyframes ec-nav-progress-shift{0%{background-position:0%}to{background-position:200%}}.ec-nav-progress-pill{left:50%;top:calc(var(--ec-nav-height,72px) + 10px);z-index:9997;border:1px solid var(--ec-border);border-radius:999px;align-items:center;gap:10px;padding:8px 16px 8px 10px;display:flex;position:fixed;transform:translate(-50%)}@supports (color:color-mix(in lab, red, red)){.ec-nav-progress-pill{border:1px solid color-mix(in srgb, var(--ec-border) 55%, transparent)}}.ec-nav-progress-pill{background:var(--ec-canvas)}@supports (color:color-mix(in lab, red, red)){.ec-nav-progress-pill{background:color-mix(in srgb, var(--ec-canvas) 88%, transparent)}}.ec-nav-progress-pill{-webkit-backdrop-filter:blur(16px)saturate(1.4);box-shadow:0 8px 28px var(--ec-ink,#000), inset 0 1px 0 #ffffff59}@supports (color:color-mix(in lab, red, red)){.ec-nav-progress-pill{box-shadow:0 8px 28px color-mix(in srgb, var(--ec-ink,#000) 14%, transparent), inset 0 1px 0 #ffffff59}}.ec-nav-progress-pill{pointer-events:none;animation:.26s cubic-bezier(.22,1,.36,1) ec-nav-pill-in}@keyframes ec-nav-pill-in{0%{opacity:0;transform:translate(-50%)translateY(-6px)scale(.96)}to{opacity:1;transform:translate(-50%)translateY(0)scale(1)}}.ec-exam-loader{flex-direction:column;align-items:center;gap:12px;display:flex}.ec-exam-loader--sm{--orbit-r:12px;flex-direction:row;gap:10px}.ec-exam-loader--sm .ec-exam-loader-label{min-width:9.5em;margin:0;font-size:13px;animation:.32s ec-exam-label-in}.ec-exam-loader--md .ec-exam-loader-orbit{width:48px;height:48px}.ec-exam-loader--lg .ec-exam-loader-orbit{width:64px;height:64px}.ec-exam-loader-orbit{flex-shrink:0;width:36px;height:36px;position:relative}.ec-exam-loader-orbit:before{content:"";border:1.5px dashed var(--ec-brand);border-radius:50%;position:absolute;inset:2px}@supports (color:color-mix(in lab, red, red)){.ec-exam-loader-orbit:before{border:1.5px dashed color-mix(in srgb, var(--ec-brand) 35%, var(--ec-border))}}.ec-exam-loader-orbit:before{animation:2.4s linear infinite ec-exam-orbit-spin}.ec-exam-loader-dot{border-radius:50%;width:7px;height:7px;margin:-3.5px 0 0 -3.5px;position:absolute;top:50%;left:50%;box-shadow:0 0 8px}@supports (color:color-mix(in lab, red, red)){.ec-exam-loader-dot{box-shadow:0 0 8px color-mix(in srgb, currentColor 40%, transparent)}}.ec-exam-loader--md .ec-exam-loader-dot,.ec-exam-loader--lg .ec-exam-loader-dot{width:9px;height:9px;margin:-4.5px 0 0 -4.5px}.ec-exam-loader-dot--math{color:var(--ec-c-math);animation:1.15s ease-in-out infinite ec-exam-dot-orbit}.ec-exam-loader-dot--brand{color:var(--ec-brand);animation:1.15s ease-in-out -.28s infinite ec-exam-dot-orbit}.ec-exam-loader-dot--phys{color:var(--ec-c-phys);animation:1.15s ease-in-out -.56s infinite ec-exam-dot-orbit}.ec-exam-loader-dot--chem{color:var(--ec-c-chem);animation:1.15s ease-in-out -.84s infinite ec-exam-dot-orbit}.ec-exam-loader-core{font-family:var(--font-display,"Newsreader", Georgia, serif);color:var(--ec-brand);place-items:center;font-size:14px;animation:1.2s ease-in-out infinite ec-exam-core-pulse;display:grid;position:absolute;inset:0}.ec-exam-loader--md .ec-exam-loader-core{font-size:17px}.ec-exam-loader--lg .ec-exam-loader-core{font-size:22px}.ec-exam-loader-label{font-family:var(--font-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--ec-text-secondary);margin:0;font-size:11.5px;font-weight:600;animation:.32s ec-exam-label-in}.ec-exam-loader--lg .ec-exam-loader-label{font-size:12.5px}@keyframes ec-exam-orbit-spin{to{transform:rotate(360deg)}}@keyframes ec-exam-dot-orbit{0%,to{transform:rotate(0deg) translateY(calc(-1 * var(--orbit-r,14px))) scale(.85);opacity:.55}50%{transform:rotate(180deg) translateY(calc(-1 * var(--orbit-r,14px))) scale(1.08);opacity:1}}.ec-exam-loader--md{--orbit-r:18px}.ec-exam-loader--lg{--orbit-r:24px}@keyframes ec-exam-core-pulse{0%,to{opacity:.82;transform:scale(1)}50%{opacity:1;transform:scale(1.08)}}@keyframes ec-exam-label-in{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.ec-exam-loader-inline{--orbit-r:9px;align-items:center;gap:8px;display:inline-flex}.ec-exam-loader-inline .ec-exam-loader-orbit{width:22px;height:22px}.ec-exam-loader-inline .ec-exam-loader-dot{width:5px;height:5px;margin:-2.5px 0 0 -2.5px}.ec-exam-loader-inline .ec-exam-loader-core{font-size:10px}.ec-exam-loader-inline .ec-exam-loader-orbit:before{inset:1px}.ec-skeleton-shimmer{background:var(--ec-surface-raised);position:relative;overflow:hidden}@supports (color:color-mix(in lab, red, red)){.ec-skeleton-shimmer{background:color-mix(in srgb, var(--ec-surface-raised) 92%, var(--ec-border))}}.ec-skeleton-shimmer:after{content:"";background:linear-gradient(105deg, transparent 0%, transparent 38%, var(--ec-brand) 50%, transparent 62%, transparent 100%);position:absolute;inset:0;transform:translate(-100%)}@supports (color:color-mix(in lab, red, red)){.ec-skeleton-shimmer:after{background:linear-gradient(105deg, transparent 0%, transparent 38%, color-mix(in srgb, var(--ec-brand) 10%, #fff) 50%, transparent 62%, transparent 100%)}}.ec-skeleton-shimmer:after{animation:1.35s ease-in-out infinite ec-skeleton-wave}@keyframes ec-skeleton-wave{to{transform:translate(100%)}}.ec-page-loading{flex-direction:column;justify-content:center;align-items:center;gap:20px;min-height:min(52vh,420px);padding:32px 20px;display:flex}.ec-page-loading--compact{gap:14px;min-height:240px}.rc-community-loading-intro{min-height:auto;padding:8px 20px 4px}.catalog-loading-intro{min-height:auto;padding:12px 20px 0}@media (max-width:900px){.rc-community-loading-intro{padding-top:4px}}.ec-loading-overlay{z-index:4;border-radius:inherit;background:var(--ec-canvas);justify-content:center;align-items:center;display:flex;position:absolute;inset:0}@supports (color:color-mix(in lab, red, red)){.ec-loading-overlay{background:color-mix(in srgb, var(--ec-canvas) 78%, transparent)}}.ec-loading-overlay{-webkit-backdrop-filter:blur(4px);animation:.2s ec-loading-overlay-in}@keyframes ec-loading-overlay-in{0%{opacity:0}to{opacity:1}}.ec-loading-overlay--light{background:var(--ec-canvas)}@supports (color:color-mix(in lab, red, red)){.ec-loading-overlay--light{background:color-mix(in srgb, var(--ec-canvas) 62%, transparent)}}@media (max-width:900px){.ec-nav-progress-pill{display:none!important}}@media (prefers-reduced-motion:reduce){.ec-nav-progress-bar,.ec-exam-loader-orbit:before,.ec-exam-loader-dot,.ec-exam-loader-core,.ec-skeleton-shimmer:after,.ec-nav-progress-pill{animation:none!important}.ec-nav-progress-bar{transition:none}.ec-exam-loader-label{animation:none}}[data-ec-theme=zen]{--text-2:var(--text)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=zen]{--text-2:color-mix(in oklch, var(--text) 72%, var(--bg))}}[data-ec-theme=zen]{--muted:var(--text)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=zen]{--muted:color-mix(in oklch, var(--text) 58%, var(--bg))}}[data-ec-theme=zen]{--ec-text-secondary:var(--ec-text-primary)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=zen]{--ec-text-secondary:color-mix(in oklch, var(--ec-text-primary) 72%, var(--ec-canvas))}}[data-ec-theme=zen]{--ec-text-tertiary:var(--ec-text-primary)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=zen]{--ec-text-tertiary:color-mix(in oklch, var(--ec-text-primary) 68%, var(--ec-canvas))}}[data-ec-theme=zen]{--ec-text-faint:var(--ec-text-primary)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=zen]{--ec-text-faint:color-mix(in oklch, var(--ec-text-primary) 58%, var(--ec-canvas))}}[data-ec-theme=late-night]{--text-2:var(--text)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=late-night]{--text-2:color-mix(in oklch, var(--text) 78%, var(--bg))}}[data-ec-theme=late-night]{--muted:var(--text)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=late-night]{--muted:color-mix(in oklch, var(--text) 62%, var(--bg))}}[data-ec-theme=late-night]{--ec-text-secondary:var(--ec-text-primary)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=late-night]{--ec-text-secondary:color-mix(in oklch, var(--ec-text-primary) 78%, var(--ec-canvas))}}[data-ec-theme=late-night]{--ec-text-tertiary:var(--ec-text-primary)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=late-night]{--ec-text-tertiary:color-mix(in oklch, var(--ec-text-primary) 72%, var(--ec-canvas))}}[data-ec-theme=late-night]{--ec-text-faint:var(--ec-text-primary)}@supports (color:color-mix(in lab, red, red)){[data-ec-theme=late-night]{--ec-text-faint:color-mix(in oklch, var(--ec-text-primary) 62%, var(--ec-canvas))}}@media (prefers-contrast:more){[data-ec-theme=zen],[data-ec-theme=late-night]{--muted:var(--text-2);--ec-text-faint:var(--ec-text-secondary);--ec-text-tertiary:var(--ec-text-secondary)}}.course-root{color:var(--text);--course-read-text:var(--text);--course-read-muted:var(--text-2);--ec-text-primary:var(--text);--ec-text-secondary:var(--text-2);--ec-text-tertiary:var(--text-2);--ec-text-faint:var(--text)}@supports (color:color-mix(in lab, red, red)){.course-root{--ec-text-faint:color-mix(in oklch, var(--text) 62%, var(--bg))}}.course-root{--ec-brand:var(--ink);--ec-border:var(--border);--ec-border-subtle:var(--border);--ec-surface:var(--surface);--ec-surface-raised:var(--bg-soft);--ec-surface-muted:var(--bg-soft);--ec-canvas:var(--bg);--ec-on-brand-text:var(--on-ink-text)}:is(.btn-primary,.tally,.cmap-core,.cmap-node.on,.fsym.on,.topic-check.on,.complete-btn.done .complete-box,.streak-dot.on,.plan-ribbon,.nav-avatar:hover,.diagram-play:hover,.step-card.on .step-n,.mode-tab.on .mode-count){color:var(--on-ink-text,var(--ec-on-brand-text))}.cmap-core-label,.course-root .cmap-core .micro.cmap-core-label{color:var(--on-ink-text,var(--ec-on-brand-text));opacity:.85}.course-root :is(.hero-stat span,.scard-tab,.scard-meta,.topic-n,.topic-check,.toc-num,.step-n,.qc-reveal,.fcard-hint,.fc-nav-hint,.practice-marks,.practice-scheme-tag,.lesson-resource-go,.subj-code,.subj-go,.streak-days,.streak-dot,.dash-stat-l,.dash-course-go,.weak-go,.plan-was,.plan-per,.cmdk-btn,.crumb-link,.mode-sub),.course-root :is(.lesson-sheet-meta,.sheet-head,.paper-tab-meta,.chip.dim,.scheme-cite,.objlist-kicker,.diagram-step-label,.lsec-sub,.body-2,.lead),.course-root .micro:not(.cmap-core-label){color:var(--text-2)}.course-root .micro.cmap-detail-kicker,.course-root .micro.objlist-kicker{color:var(--ink)}html[data-ec-theme=zen] :is(.text-white,.text-white\/90,.text-white\/80,.text-slate-100,.text-slate-200,.text-slate-300,.text-gray-100,.text-gray-200,.text-gray-300,.text-neutral-100,.text-neutral-200,.text-neutral-300){color:var(--ec-text-primary)!important}html[data-ec-theme=zen] :is(.text-slate-400,.text-slate-500,.text-slate-600,.text-gray-400,.text-gray-500,.text-neutral-400,.text-neutral-500){color:var(--ec-text-secondary)!important}html[data-ec-theme=zen] :is(.text-slate-700,.text-slate-800,.text-slate-900,.text-gray-700,.text-gray-800,.text-gray-900,.text-neutral-700,.text-neutral-800,.text-neutral-900,.text-black){color:var(--ec-text-primary)!important}html[data-ec-theme=zen] :is(.btn-primary,.tally,.cmap-core,.cmap-node.on,.fsym.on,.mode-tab.on .mode-count,.ms-mstep.done .dot){color:var(--ec-on-brand-text)!important}html[data-ec-theme=late-night] :is(.text-black,.text-gray-900,.text-gray-800,.text-gray-700,.text-neutral-900,.text-neutral-800,.text-neutral-700,.text-slate-900,.text-slate-800,.text-slate-700,.text-\[\#25221b\],.text-\[\#1f1f1f\],.text-\[\#1f1f1f\]\/70){color:var(--ec-text-primary)!important}html[data-ec-theme=late-night] :is(.text-gray-600,.text-gray-500,.text-neutral-600,.text-neutral-500,.text-slate-600,.text-slate-500){color:var(--ec-text-secondary)!important}html[data-ec-theme=zen] :is(.katex,.katex-display,.course-rich-text,.course-rich-text--prose,.course-rich-text--inline,.course-rich-text--formula,.course-rich-text--flashcard),html[data-ec-theme=late-night] :is(.katex,.katex-display,.course-rich-text,.course-rich-text--prose,.course-rich-text--inline,.course-rich-text--formula,.course-rich-text--flashcard){color:var(--ec-text-primary)}html[data-ec-theme=zen] .katex :is(.base,.strut,.mord,.mop,.mbin,.mrel,.mopen,.mclose,.mpunct),html[data-ec-theme=late-night] .katex :is(.base,.strut,.mord,.mop,.mbin,.mrel,.mopen,.mclose,.mpunct){color:inherit}html[data-ec-theme=late-night] .lesson-diagram-svg text{fill:var(--text,var(--ec-text-primary))}html[data-ec-theme=late-night] .lesson-diagram-svg [stroke]{stroke:var(--text-2,var(--ec-text-secondary))}html[data-ec-theme=zen] .lesson-diagram-svg text{fill:var(--text,var(--ec-text-primary))}html[data-ec-theme=zen] .lesson-diagram-svg [stroke]{stroke:var(--ink,var(--ec-brand))}.ms-mark-steps-bar{color:var(--ec-text-secondary)}html[data-ec-theme=zen] :is(.border-white\/5,.border-white\/10,.border-white\/20){border-color:var(--ec-border)!important}html[data-ec-theme=zen] :is(.bg-white\/5,.bg-white\/10,.bg-dark-800\/60,.bg-dark-900\/60){background-color:var(--ec-text-primary)!important}@supports (color:color-mix(in lab, red, red)){html[data-ec-theme=zen] :is(.bg-white\/5,.bg-white\/10,.bg-dark-800\/60,.bg-dark-900\/60){background-color:color-mix(in srgb, var(--ec-text-primary) 5%, var(--ec-surface))!important}}html[data-ec-theme=late-night] .bg-white\/90{background-color:var(--ec-text-primary)!important}@supports (color:color-mix(in lab, red, red)){html[data-ec-theme=late-night] .bg-white\/90{background-color:color-mix(in srgb, var(--ec-text-primary) 6%, var(--ec-surface))!important}}html[data-ec-theme=zen] .placeholder\:text-slate-500::placeholder{color:var(--ec-text-secondary)!important}html[data-ec-theme=zen] .hover\:text-white:hover{color:var(--ec-text-primary)!important}.course-root .gloss:not(.on) .gloss-d,.course-root .footer h4,.course-root .footer-legal{color:var(--text-2)}a.ec-btn-primary,a.btn-primary,.course-root .ec-nav-right a.ec-btn-primary,.course-root .ec-nav-right a.ec-btn-warm{color:var(--ec-on-brand-text)}.course-root .ec-nav-right a.ec-btn-warm{color:var(--ec-accent-warm-deep)}.pricing-page{color:var(--text);--ec-text-primary:var(--text);--ec-text-secondary:var(--text-2);--ec-text-tertiary:var(--text-2);--ec-text-faint:var(--text)}@supports (color:color-mix(in lab, red, red)){.pricing-page{--ec-text-faint:color-mix(in oklch, var(--text) 62%, var(--bg))}}.pricing-page{--ec-brand:var(--ink);--ec-border:var(--border);--ec-surface:var(--surface);--ec-canvas:var(--bg);--ec-on-brand-text:var(--on-ink-text)}.pricing-page :is(.pricing-toggle-btn:not(.on),.plan-per,.plan-was,.plan-eq,.plan-cta.is-muted,.pricing-trust-item){color:var(--text-2)}.pricing-page .plan-feats li.yes{color:var(--text)}.pricing-page :is(a.plan-cta.btn-primary,button.plan-cta.btn-primary){color:var(--on-ink-text,var(--ec-on-brand-text))!important}.ec-page-mesh,.ec-section-tint,.ms-pillar-band,.pricing-card-mesh{color:var(--ec-text-primary)}.ec-page-mesh :is(.ms-lead,.ms-body-2,.lead,.body-2),.ec-section-tint :is(.ms-lead,.ms-body-2){color:var(--ec-text-secondary)}.pricing-page.ec-page-mesh .pricing-hero :is(.lead,.overline),.pricing-page .plan-feats li.no{color:var(--text-2)}.faq.on .faq-plus{color:var(--ec-c-phys)}.course-root .scard-top .scard-tab,.scard-top .scard-tab{color:#ffffffeb}:is([data-ec-theme=zen],[data-theme=paper]) .scard-go{color:var(--acc)}@supports (color:color-mix(in lab, red, red)){:is([data-ec-theme=zen],[data-theme=paper]) .scard-go{color:color-mix(in srgb, var(--acc) 68%, var(--text))}}.course-root :is(.lesson-mastery-review,.licensed-figure-credit,.qex-draghint){color:var(--text-2)}.plans .plan span.plan-ribbon{color:#241405}:root{--background:var(--ec-canvas);--foreground:var(--ec-text-primary);--radius:1rem;--border:var(--ec-border);--input:var(--ec-border);--ring:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){:root{--ring:color-mix(in srgb, var(--ec-brand) 40%, transparent)}}:root{--card:var(--ec-surface);--card-foreground:var(--ec-text-primary);--popover:var(--ec-surface-raised);--popover-foreground:var(--ec-text-primary);--primary:var(--ec-brand);--primary-foreground:var(--ec-on-brand-text);--secondary:var(--ec-surface);--secondary-foreground:var(--ec-text-primary);--muted-foreground:var(--ec-text-secondary);--accent:var(--ec-surface-raised);--accent-foreground:var(--ec-text-primary);--destructive:var(--ec-chip-critical-text);--chart-1:var(--ec-brand);--chart-2:var(--ec-chip-warning-text);--chart-3:var(--ec-chip-critical-text);--chart-4:#f59e0b;--chart-5:var(--ec-chip-critical-text);--sidebar:var(--ec-surface);--sidebar-foreground:var(--ec-text-primary);--sidebar-primary:var(--ec-brand);--sidebar-primary-foreground:#fff;--sidebar-accent:var(--ec-surface-raised);--sidebar-accent-foreground:var(--ec-text-primary);--sidebar-border:var(--ec-border);--sidebar-ring:var(--ec-brand)}@supports (color:color-mix(in lab, red, red)){:root{--sidebar-ring:color-mix(in srgb, var(--ec-brand) 40%, transparent)}}[data-ec-theme=late-night] .text-slate-900{color:#f8fafc}[data-ec-theme=late-night] .text-slate-800{color:#f1f5f9}[data-ec-theme=late-night] .text-slate-700{color:#cbd5e1}[data-ec-theme=late-night] .text-slate-600,[data-ec-theme=late-night] .text-slate-500,[data-ec-theme=late-night] .text-slate-400{color:#94a3b8}[data-ec-theme=late-night] .text-slate-300{color:#64748b}[data-ec-theme=zen] .text-emerald-100,[data-ec-theme=zen] .text-emerald-200,[data-ec-theme=zen] .text-emerald-300{color:var(--ec-chip-success-text)!important}[data-ec-theme=zen] .text-emerald-400,[data-ec-theme=zen] .text-emerald-500{color:var(--ec-brand)!important}[data-ec-theme=zen] .text-amber-100,[data-ec-theme=zen] .text-amber-200,[data-ec-theme=zen] .text-amber-300,[data-ec-theme=zen] .text-amber-400{color:var(--ec-chip-warning-text)!important}[data-ec-theme=zen] .text-cyan-100,[data-ec-theme=zen] .text-cyan-200,[data-ec-theme=zen] .text-cyan-300,[data-ec-theme=zen] .text-cyan-400{color:var(--ec-chip-info-text)!important}[data-ec-theme=zen] .text-red-200,[data-ec-theme=zen] .text-red-300,[data-ec-theme=zen] .text-red-400{color:var(--ec-chip-critical-text)!important}[data-ec-theme=zen] .text-violet-300,[data-ec-theme=zen] .text-violet-400{color:var(--ec-chip-accent-text)!important}::view-transition-old(root){animation-duration:.3s;animation-timing-function:cubic-bezier(.4,0,.2,1)}::view-transition-new(root){animation-duration:.3s;animation-timing-function:cubic-bezier(.4,0,.2,1)}.hero-bg,.mesh-bg{background:0 0}.select-chevron{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 20 20' fill='none'%3E%3Cpath d='M5 7.5L10 12.5L15 7.5' stroke='%238a7f70' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-position:right .875rem center;background-repeat:no-repeat;background-size:1.125rem 1.125rem;padding-right:2.5rem}.katex,.katex .base,.katex .strut,.katex .mord,.katex .mop,.katex .mbin,.katex .mrel,.katex .mopen,.katex .mclose,.katex .mpunct{color:var(--ec-text-primary)}.katex-display{border-radius:var(--ec-radius-card);background:var(--ec-surface);border:1px solid var(--ec-border);margin:1.25em 0;padding:1em;overflow-x:auto}@media (prefers-reduced-motion:reduce){.animate-shimmer,.animate-shimmer-skeleton,.brand-breathe,.gradient-text,.ec-text-gradient,.animate-entry{animation:none!important}*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}@property --tw-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-y{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-z{syntax:"*";inherits:false;initial-value:0}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-space-y-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-divide-y-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-gradient-position{syntax:"*";inherits:false}@property --tw-gradient-from{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-via{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-to{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-stops{syntax:"*";inherits:false}@property --tw-gradient-via-stops{syntax:"*";inherits:false}@property --tw-gradient-from-position{syntax:"<length-percentage>";inherits:false;initial-value:0%}@property --tw-gradient-via-position{syntax:"<length-percentage>";inherits:false;initial-value:50%}@property --tw-gradient-to-position{syntax:"<length-percentage>";inherits:false;initial-value:100%}@property --tw-leading{syntax:"*";inherits:false}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-tracking{syntax:"*";inherits:false}@property --tw-ordinal{syntax:"*";inherits:false}@property --tw-slashed-zero{syntax:"*";inherits:false}@property --tw-numeric-figure{syntax:"*";inherits:false}@property --tw-numeric-spacing{syntax:"*";inherits:false}@property --tw-numeric-fraction{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-backdrop-blur{syntax:"*";inherits:false}@property --tw-backdrop-brightness{syntax:"*";inherits:false}@property --tw-backdrop-contrast{syntax:"*";inherits:false}@property --tw-backdrop-grayscale{syntax:"*";inherits:false}@property --tw-backdrop-hue-rotate{syntax:"*";inherits:false}@property --tw-backdrop-invert{syntax:"*";inherits:false}@property --tw-backdrop-opacity{syntax:"*";inherits:false}@property --tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}@property --tw-duration{syntax:"*";inherits:false}@property --tw-ease{syntax:"*";inherits:false}@property --tw-content{syntax:"*";inherits:false;initial-value:""}@property --tw-scale-x{syntax:"*";inherits:false;initial-value:1}@property --tw-scale-y{syntax:"*";inherits:false;initial-value:1}@property --tw-scale-z{syntax:"*";inherits:false;initial-value:1}@keyframes spin{to{transform:rotate(360deg)}}@keyframes ping{75%,to{opacity:0;transform:scale(2)}}@keyframes pulse{50%{opacity:.5}}