:root{--color-paper: oklch(98.5% .01 80);--color-ink: oklch(20% .01 60);--color-ink-muted: oklch(45% .01 60);--color-ink-soft: oklch(60% .01 60);--color-rule: oklch(88% .01 60);--color-accent: oklch(48% .13 30);--color-accent-soft: oklch(94% .04 30);--color-success: oklch(48% .14 150);--color-success-soft: oklch(94% .04 150);--color-error: oklch(48% .18 25);--color-error-soft: oklch(95% .05 25);--color-surface: oklch(100% 0 0);--color-surface-2: oklch(95% .005 80);--font-serif: "Crimson Pro", "Iowan Old Style", "Palatino Linotype", Georgia, serif;--font-sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;--font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;--text-micro: .75rem;--text-small: .875rem;--text-base: clamp(1rem, .95rem + .25vw, 1.0625rem);--text-body: clamp(1.0625rem, 1rem + .4vw, 1.1875rem);--text-lead: clamp(1.1875rem, 1.05rem + .6vw, 1.375rem);--text-h3: clamp(1.25rem, 1.15rem + .5vw, 1.5rem);--text-h2: clamp(1.625rem, 1.4rem + 1vw, 2.25rem);--text-h1: clamp(2rem, 1.6rem + 2vw, 3.5rem);--leading-tight: 1.15;--leading-snug: 1.35;--leading-normal: 1.55;--leading-loose: 1.75;--space-3xs: .25rem;--space-2xs: .5rem;--space-xs: .75rem;--space-sm: 1rem;--space-md: 1.5rem;--space-lg: 2.5rem;--space-xl: 4rem;--space-2xl: 6.5rem;--duration-fast: .15s;--duration-normal: .25s;--ease-out-quart: cubic-bezier(.25, 1, .5, 1);--ease-out-expo: cubic-bezier(.16, 1, .3, 1);--radius-sm: 4px;--radius-md: 8px;--radius-lg: 16px;--shadow-sm: 0 1px 2px oklch(0% 0 0 / .05);--shadow-md: 0 4px 12px oklch(0% 0 0 / .06);--shadow-lg: 0 12px 32px oklch(0% 0 0 / .08);--content-narrow: 38rem;--content-medium: 56rem;--content-wide: 72rem}@media (prefers-color-scheme: dark){:root{--color-paper: oklch(15% .01 60);--color-ink: oklch(92% .01 80);--color-ink-muted: oklch(72% .01 80);--color-ink-soft: oklch(55% .01 80);--color-rule: oklch(28% .01 60);--color-accent: oklch(72% .15 30);--color-accent-soft: oklch(28% .06 30);--color-success: oklch(72% .16 150);--color-success-soft: oklch(25% .05 150);--color-error: oklch(72% .18 25);--color-error-soft: oklch(28% .06 25);--color-surface: oklch(18% .01 60);--color-surface-2: oklch(22% .01 60)}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0}html{-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);font-size:var(--text-base);line-height:var(--leading-normal);color:var(--color-ink);background:var(--color-paper);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}img,audio,video,canvas{max-width:100%;height:auto;display:block}button,input,textarea,select{font:inherit;color:inherit}button{cursor:pointer}a{color:var(--color-accent);text-decoration:underline;text-underline-offset:.2em}a:hover{text-decoration-thickness:2px}:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px;border-radius:2px}h1,h2,h3{font-family:var(--font-serif);font-weight:600;line-height:var(--leading-tight);letter-spacing:-.01em;margin:0}h1{font-size:var(--text-h1)}h2{font-size:var(--text-h2)}h3{font-size:var(--text-h3)}.eyebrow{font-family:var(--font-sans);font-size:var(--text-micro);font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--color-ink-muted)}.shell{min-height:100dvh;display:grid;grid-template-rows:auto 1fr auto}.container{max-width:var(--content-wide);margin:0 auto;padding:var(--space-md) var(--space-md)}.container--narrow{max-width:var(--content-narrow)}.container--medium{max-width:var(--content-medium)}.stack>*+*{margin-top:var(--space-sm)}.stack-md>*+*{margin-top:var(--space-md)}.stack-lg>*+*{margin-top:var(--space-lg)}.site-header{border-bottom:1px solid var(--color-rule);background:var(--color-paper);position:sticky;top:0;z-index:10;backdrop-filter:saturate(120%) blur(8px);background:oklch(from var(--color-paper) l c h / .85)}.site-header__inner{max-width:var(--content-wide);margin:0 auto;padding:var(--space-sm) var(--space-md);display:flex;justify-content:space-between;align-items:baseline;gap:var(--space-md)}.brand{font-family:var(--font-serif);font-size:var(--text-lead);font-weight:600;letter-spacing:-.02em;text-decoration:none;color:var(--color-ink)}.brand em{font-style:italic;color:var(--color-accent)}.nav{display:flex;gap:var(--space-md);align-items:baseline}.nav a,.nav button{background:none;border:0;padding:0;font-size:var(--text-small);color:var(--color-ink-muted);text-decoration:none}.nav a:hover,.nav button:hover{color:var(--color-ink)}.site-footer{border-top:1px solid var(--color-rule);padding:var(--space-md);text-align:center;font-size:var(--text-small);color:var(--color-ink-soft)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2xs);font-family:var(--font-sans);font-size:var(--text-small);font-weight:600;letter-spacing:.01em;padding:var(--space-2xs) var(--space-md);border:1px solid transparent;border-radius:var(--radius-sm);background:var(--color-ink);color:var(--color-paper);text-decoration:none;transition:transform var(--duration-fast) var(--ease-out-quart),background var(--duration-fast) var(--ease-out-quart);min-height:2.5rem}.btn:hover{transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn--primary{background:var(--color-accent);color:var(--color-paper)}.btn--ghost{background:transparent;color:var(--color-ink);border-color:var(--color-rule)}.btn--ghost:hover{border-color:var(--color-ink);background:var(--color-surface-2)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.field{display:flex;flex-direction:column;gap:var(--space-3xs)}.field label{font-size:var(--text-small);font-weight:500;color:var(--color-ink)}.field input,.field textarea{border:1px solid var(--color-rule);background:var(--color-surface);border-radius:var(--radius-sm);padding:var(--space-2xs) var(--space-xs);font-size:var(--text-base);min-height:2.5rem;transition:border-color var(--duration-fast) var(--ease-out-quart)}.field input:hover,.field textarea:hover{border-color:var(--color-ink-soft)}.field input:focus-visible,.field textarea:focus-visible{border-color:var(--color-accent);outline-offset:0}.field__hint{font-size:var(--text-small);color:var(--color-ink-muted)}.field__error{font-size:var(--text-small);color:var(--color-error)}.auth-card{max-width:24rem;margin:var(--space-2xl) auto;padding:var(--space-lg);background:var(--color-surface);border:1px solid var(--color-rule);border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.auth-card h1{font-size:var(--text-h2);margin-bottom:var(--space-2xs)}.auth-card .lead{color:var(--color-ink-muted);font-size:var(--text-base);margin-bottom:var(--space-md)}.auth-card form{display:grid;gap:var(--space-sm)}.auth-card .alt{font-size:var(--text-small);color:var(--color-ink-muted);text-align:center;margin-top:var(--space-md)}.hero{padding:var(--space-xl) 0 var(--space-lg)}.hero h1{font-style:italic;font-weight:500}.hero .eyebrow{margin-bottom:var(--space-2xs)}.hero p{font-size:var(--text-lead);color:var(--color-ink-muted);font-family:var(--font-serif);font-style:italic;max-width:32rem;margin:var(--space-sm) 0 0}.tests{display:grid;gap:var(--space-md);grid-template-columns:1fr;border-top:1px solid var(--color-rule)}.test-row{display:grid;grid-template-columns:minmax(0,8rem) 1fr auto;align-items:baseline;padding:var(--space-md) 0;border-bottom:1px solid var(--color-rule);gap:var(--space-md)}.test-row__num{font-family:var(--font-serif);font-size:var(--text-h2);font-weight:500;font-style:italic;color:var(--color-ink-soft);letter-spacing:-.02em}.test-row__modules{display:flex;flex-wrap:wrap;gap:var(--space-sm) var(--space-md)}.module-link{text-decoration:none;color:var(--color-ink);display:inline-flex;align-items:baseline;gap:var(--space-3xs);position:relative;padding:var(--space-3xs) 0}.module-link__label{font-size:var(--text-base);font-weight:500}.module-link__count{font-size:var(--text-small);color:var(--color-ink-soft);font-variant-numeric:tabular-nums}.module-link:after{content:"";position:absolute;bottom:0;left:0;right:100%;height:1px;background:var(--color-accent);transition:right var(--duration-normal) var(--ease-out-expo)}.module-link:hover:after{right:0}.module-link[aria-disabled=true]{pointer-events:none;color:var(--color-ink-soft)}.reading-shell{display:grid;grid-template-columns:minmax(0,1fr);gap:var(--space-lg);padding:var(--space-md)}@media (min-width: 64rem){.reading-shell{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);max-width:var(--content-wide);margin:0 auto}}.passage{font-family:var(--font-serif);font-size:var(--text-body);line-height:var(--leading-loose);color:var(--color-ink)}.passage h1{font-size:var(--text-h1);font-weight:600;margin-bottom:var(--space-xs)}.passage .source{font-style:italic;color:var(--color-ink-muted);font-size:var(--text-base);margin-bottom:var(--space-md)}.passage p{margin:0 0 var(--space-sm);white-space:pre-wrap}.questions{display:grid;gap:var(--space-md)}.q-group{border:1px solid var(--color-rule);border-radius:var(--radius-md);padding:var(--space-md);background:var(--color-surface)}.q-group__head{display:flex;justify-content:space-between;align-items:baseline;gap:var(--space-sm);margin-bottom:var(--space-xs)}.q-group__kind{font-size:var(--text-micro);font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--color-accent)}.q-group__instructions{font-size:var(--text-small);color:var(--color-ink-muted);white-space:pre-wrap;margin-bottom:var(--space-sm)}.q-group__shared{background:var(--color-surface-2);border-radius:var(--radius-sm);padding:var(--space-sm);font-size:var(--text-small);margin-bottom:var(--space-sm)}.q-group__shared dl{display:grid;grid-template-columns:max-content 1fr;gap:var(--space-3xs) var(--space-sm);margin:0}.q-group__shared dt{font-weight:600;font-variant-numeric:tabular-nums}.q-group__shared dd{margin:0}.q-list{display:grid;gap:var(--space-sm)}.q-row{display:grid;grid-template-columns:2.5rem 1fr;gap:var(--space-sm);align-items:start}.q-row__num{font-family:var(--font-serif);font-size:var(--text-lead);font-weight:600;font-variant-numeric:tabular-nums;color:var(--color-accent);text-align:right}.q-row__body{display:grid;gap:var(--space-2xs)}.q-row__prompt{font-size:var(--text-base);line-height:var(--leading-snug)}.q-row__input{font-size:var(--text-small)}.q-row__input input,.q-row__input select,.q-row__input textarea{width:100%;border:1px solid var(--color-rule);background:var(--color-surface);border-radius:var(--radius-sm);padding:var(--space-2xs) var(--space-xs);font-size:var(--text-base);min-height:2.25rem}.q-row__input input:focus-visible{border-color:var(--color-accent);outline-offset:0}.q-row--correct .q-row__num{color:var(--color-success)}.q-row--correct .q-row__input input{border-color:var(--color-success);background:var(--color-success-soft)}.q-row--wrong .q-row__num{color:var(--color-error)}.q-row--wrong .q-row__input input{border-color:var(--color-error);background:var(--color-error-soft)}.q-row__feedback{font-size:var(--text-small);color:var(--color-ink-muted);margin-top:var(--space-3xs)}.q-row__feedback strong{color:var(--color-success);font-weight:600}.attempt-bar{position:sticky;bottom:0;background:var(--color-surface);border-top:1px solid var(--color-rule);padding:var(--space-sm) var(--space-md);display:flex;justify-content:space-between;align-items:center;gap:var(--space-sm);box-shadow:0 -4px 12px #0000000a}.attempt-bar__progress{font-size:var(--text-small);color:var(--color-ink-muted)}.attempt-bar__progress strong{color:var(--color-ink);font-variant-numeric:tabular-nums}.score-display{text-align:center;padding:var(--space-xl) var(--space-md)}.score-display .eyebrow{margin-bottom:var(--space-sm)}.score-display__band{font-family:var(--font-serif);font-size:clamp(4rem,3rem + 5vw,8rem);font-weight:600;line-height:1;letter-spacing:-.04em;color:var(--color-accent)}.score-display__raw{font-size:var(--text-lead);color:var(--color-ink-muted);margin-top:var(--space-2xs);font-variant-numeric:tabular-nums}.score-display__raw strong{color:var(--color-ink);font-weight:600}.audio-player{background:var(--color-ink);color:var(--color-paper);border-radius:var(--radius-md);padding:var(--space-2xs) var(--space-sm);display:flex;align-items:center;gap:var(--space-sm);position:sticky;top:4rem;z-index:5;min-height:3rem}.audio-player audio{display:none}.audio-player__btn{flex:0 0 auto;width:2.25rem;height:2.25rem;border-radius:50%;border:0;background:var(--color-paper);color:var(--color-ink);font-size:.85rem;line-height:1;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;font-family:inherit}.audio-player__btn:hover{background:var(--color-accent);color:var(--color-paper)}.audio-player__time{flex:0 0 auto;font-size:var(--text-small);font-variant-numeric:tabular-nums;opacity:.85;min-width:2.5em;text-align:center}.audio-player__seek{flex:1 1 auto;-webkit-appearance:none;appearance:none;height:4px;border-radius:999px;background:oklch(from var(--color-paper) l c h / .25);outline:none;cursor:pointer}.audio-player__seek::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:14px;height:14px;border-radius:50%;background:var(--color-paper);border:0;cursor:pointer}.audio-player__seek::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--color-paper);border:0;cursor:pointer}.audio-player__seek:disabled{opacity:.4;cursor:not-allowed}.audio-player__status{font-size:var(--text-small);opacity:.85}.alert{padding:var(--space-sm) var(--space-md);border-radius:var(--radius-sm);font-size:var(--text-small)}.alert--error{background:var(--color-error-soft);color:var(--color-error);border:1px solid var(--color-error)}.center{text-align:center}.muted{color:var(--color-ink-muted)}.empty{padding:var(--space-2xl) var(--space-md);text-align:center;color:var(--color-ink-muted)}.spinner{width:1.25rem;height:1.25rem;border:2px solid var(--color-rule);border-top-color:var(--color-accent);border-radius:50%;animation:spin .8s linear infinite;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.module-block{display:flex;flex-direction:column;gap:var(--space-3xs);min-width:10rem}.module-block__head{display:flex;align-items:baseline;gap:var(--space-2xs)}.module-block__label{font-size:var(--text-base);font-weight:500;color:var(--color-ink)}.module-block__count{font-size:var(--text-small);color:var(--color-ink-soft);font-variant-numeric:tabular-nums}.module-block__actions{display:flex;gap:var(--space-2xs)}.module-block__btn{text-decoration:none;font-size:var(--text-small);padding:var(--space-3xs) var(--space-2xs);border-radius:var(--radius-sm);border:1px solid var(--color-rule);color:var(--color-ink);transition:background var(--duration-fast) var(--ease-out-expo),color var(--duration-fast) var(--ease-out-expo),border-color var(--duration-fast) var(--ease-out-expo)}.module-block__btn:hover{border-color:var(--color-ink)}.module-block__btn--mock{background:var(--color-ink);color:var(--color-paper);border-color:var(--color-ink)}.module-block__btn--mock:hover{background:var(--color-accent);color:var(--color-paper);border-color:var(--color-accent)}.module-block--disabled{opacity:.45}.module-block--disabled .module-block__label{color:var(--color-ink-soft)}.mock-timer{position:sticky;top:0;z-index:10;background:var(--color-ink);color:var(--color-paper);padding:var(--space-2xs) var(--space-md);display:flex;justify-content:center;align-items:baseline;gap:var(--space-sm);font-size:var(--text-small)}.mock-timer__label{text-transform:uppercase;letter-spacing:.08em;opacity:.7}.mock-timer__clock{font-variant-numeric:tabular-nums;font-size:var(--text-base);font-weight:600}.mock-timer--warn{background:var(--color-error, oklch(55% .2 30))}.mock-timer__done{opacity:.7;font-style:italic}.audio-mock{background:var(--color-ink);color:var(--color-paper);border-radius:var(--radius-md);padding:var(--space-sm) var(--space-md);display:flex;align-items:center;gap:var(--space-md)}.audio-mock--missing{background:var(--color-error-soft, oklch(95% .05 30));color:var(--color-error, oklch(45% .2 30))}.audio-mock__play{flex:1;font-size:var(--text-base);padding:var(--space-2xs) var(--space-md)}.audio-mock__play:disabled{opacity:.55;cursor:not-allowed}.dash-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(11rem,1fr));gap:var(--space-sm);margin-top:var(--space-md)}.dash-card{border:1px solid var(--color-rule);border-radius:var(--radius-md);padding:var(--space-sm) var(--space-md);background:oklch(from var(--color-ink) l c h / .04);display:flex;flex-direction:column;gap:var(--space-3xs)}.dash-card__band{font-family:var(--font-serif);font-size:clamp(2.5rem,1.5rem + 2.5vw,3.5rem);font-weight:600;line-height:1;letter-spacing:-.02em;color:var(--color-accent);font-variant-numeric:tabular-nums}.dash-card__sub{font-size:var(--text-small);color:var(--color-ink-muted)}.dash-section__title{font-family:var(--font-serif);font-size:var(--text-h2);font-weight:600;letter-spacing:-.01em;margin-bottom:var(--space-xs)}.dash-trend-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(18rem,1fr));gap:var(--space-md)}.dash-trend{border:1px solid var(--color-rule);border-radius:var(--radius-md);padding:var(--space-sm) var(--space-md)}.dash-trend__head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:var(--space-2xs)}.dash-trend__svg{width:100%;height:auto;display:block}.dash-trend__grid{stroke:var(--color-rule);stroke-width:1;stroke-dasharray:2 4}.dash-trend__ytick{font-size:9px;fill:var(--color-ink-soft);text-anchor:end;font-family:var(--font-mono, monospace)}.dash-trend__line{stroke:var(--color-accent);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.dash-trend__dot{fill:var(--color-accent);stroke:var(--color-paper);stroke-width:1.5}.dash-trend__foot{display:flex;justify-content:space-between;font-size:var(--text-small);color:var(--color-ink-soft);margin-top:var(--space-2xs)}.dash-heat{display:flex;flex-direction:column;gap:var(--space-2xs);border-top:1px solid var(--color-rule);padding-top:var(--space-sm)}.dash-heat__row{display:grid;grid-template-columns:12rem 1fr 6rem;align-items:center;gap:var(--space-sm);font-size:var(--text-small)}.dash-heat__kind{text-transform:capitalize;color:var(--color-ink)}.dash-heat__bar{height:.6rem;background:oklch(from var(--color-ink) l c h / .08);border-radius:999px;overflow:hidden}.dash-heat__fill{height:100%;border-radius:999px;transition:width var(--duration-normal) var(--ease-out-expo)}.dash-heat__row--good .dash-heat__fill{background:#45ba50}.dash-heat__row--mid .dash-heat__fill{background:oklch(78% .16 90)}.dash-heat__row--weak .dash-heat__fill{background:var(--color-accent)}.dash-heat__pct{text-align:right;font-variant-numeric:tabular-nums}.dash-table{width:100%;border-collapse:collapse;font-size:var(--text-small)}.dash-table th,.dash-table td{text-align:left;padding:var(--space-2xs) var(--space-xs);border-bottom:1px solid var(--color-rule)}.dash-table th{font-weight:500;color:var(--color-ink-soft);text-transform:uppercase;letter-spacing:.06em;font-size:.7rem}.dash-table td.num,.dash-table th.num{text-align:right;font-variant-numeric:tabular-nums}.dash-table tbody tr:hover{background:oklch(from var(--color-ink) l c h / .03)}.library{display:grid;grid-template-columns:repeat(auto-fit,minmax(11rem,1fr));gap:var(--space-sm);margin-top:var(--space-md)}.library__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(11rem,1fr));gap:var(--space-sm)}.library__card{display:flex;flex-direction:column;gap:var(--space-3xs);padding:var(--space-md);border:1px solid var(--color-rule);border-radius:var(--radius-md);background:oklch(from var(--color-ink) l c h / .04);text-decoration:none;color:var(--color-ink);transition:border-color var(--duration-fast) var(--ease-out-expo),transform var(--duration-fast) var(--ease-out-expo)}.library__card:hover{border-color:var(--color-accent);transform:translateY(-2px)}.library__card--soon{opacity:.45;cursor:default;pointer-events:none}.library__code{font-size:var(--text-micro);letter-spacing:.1em;text-transform:uppercase;color:var(--color-ink-muted);font-weight:600}.library__title{font-family:var(--font-serif);font-size:var(--text-lead);font-weight:600;letter-spacing:-.01em}.library__year{font-size:var(--text-small);color:var(--color-ink-soft);font-variant-numeric:tabular-nums}