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26%,var(--line))}.category-card__name{font-size:1.2rem}.category-card__desc{font-size:.9rem;color:var(--ink-2);flex:1}.category-card__stats{display:flex;justify-content:space-between;gap:10px;font-size:.78rem;font-family:var(--font-mono);color:var(--ink-3)}.category-card__footer{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:2px}.category-card__percent{font-family:var(--font-mono);font-size:.95rem;font-weight:600;color:var(--accent)}.daily-card{display:flex;align-items:center;gap:14px;flex-wrap:wrap;border:1px solid #3a332a;background:linear-gradient(150deg,#35302a,#211d18 78%);color:var(--ink-invert);box-shadow:var(--shadow)}.daily-card__glyph{display:grid;place-items:center;width:52px;height:52px;flex:none;border-radius:14px;color:var(--gold-soft);background:#e5c9791f;border:1px solid rgba(229,201,121,.28)}.daily-card__body{flex:1 1 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18px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:16px}.quiz__question{font-size:clamp(1.15rem,4.4vw,1.4rem);line-height:1.32}.artifact-plate{margin:0;border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--line);background:var(--surface-2)}.artifact-plate img{width:100%;height:auto;max-height:260px;object-fit:contain;background:var(--surface-2)}.artifact-plate__fallback{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;min-height:140px;color:var(--ink-3);font-size:.8rem;letter-spacing:.04em}.answers{display:flex;flex-direction:column;gap:9px}.answer{position:relative;display:flex;align-items:center;gap:12px;width:100%;min-height:56px;padding:12px 14px;text-align:left;border-radius:var(--radius-sm);border:1px solid var(--line-strong);background:var(--surface);color:var(--ink);font-size:.97rem;line-height:1.35;transition:transform var(--dur-fast) var(--ease),border-color var(--dur-fast) var(--ease),background var(--dur-fast) var(--ease),box-shadow var(--dur-fast) var(--ease)}.answer:hover:not(:disabled){border-color:var(--ink-3);background:var(--surface-2);transform:translate(2px)}.answer:disabled{cursor:default}.answer__letter{display:grid;place-items:center;flex:none;width:28px;height:28px;border-radius:7px;font-family:var(--font-mono);font-size:.82rem;font-weight:700;color:var(--ink-2);background:var(--surface-3);border:1px solid var(--line)}.answer__text{flex:1}.answer__mark{font-size:1.05rem;font-weight:700;flex:none}.answer.is-correct{border-color:var(--correct-line);background:var(--correct-bg);color:#1f4a2b;animation:correct-glow var(--dur-slow) var(--ease)}.answer.is-correct .answer__letter{background:var(--correct);border-color:var(--correct);color:#fff}.answer.is-correct .answer__mark{color:var(--correct)}.answer.is-wrong{border-color:var(--wrong-line);background:var(--wrong-bg);color:#7b271b}.answer.is-wrong 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12px}.feedback__verdict{font-family:var(--font-display);font-size:1.2rem;font-weight:600}.feedback--correct .feedback__verdict{color:var(--correct)}.feedback--wrong .feedback__verdict{color:var(--wrong)}.feedback__xp{font-family:var(--font-mono);font-weight:700;color:var(--ochre-deep)}.feedback__answer{font-size:.86rem;font-weight:600;color:var(--ink-2)}.feedback__explanation{font-size:.93rem;color:var(--ink-2);line-height:1.55}.results{max-width:560px;width:100%;margin:0 auto;display:flex;flex-direction:column;gap:8px;text-align:center}.results .eyebrow{text-align:center}.keep-progress{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;border-left:3px solid var(--ochre)}.keep-progress__text{flex:1 1 260px;min-width:0}.keep-progress__title{margin:0 0 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10px 12px;border:1px solid var(--line-strong);border-radius:999px;background:linear-gradient(174deg,#fffdf8,var(--surface) 60%,var(--surface-2));color:var(--ink-2);box-shadow:inset 0 1px #fff,0 1px 2px #3a2b160f;transition:transform var(--dur-fast) var(--ease),box-shadow var(--dur-fast) var(--ease),border-color var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease)}.lang-picker__option:hover{transform:translateY(-1px);border-color:var(--ochre);color:var(--ochre-deep);box-shadow:inset 0 1px #fff,0 4px 10px -4px #3a2b164d}.lang-picker__option:active{transform:translateY(1px);box-shadow:inset 0 2px 5px #8c765242}.lang-picker__code{min-width:30px;padding:3px 0;border-radius:6px;background:var(--surface-3);font-size:.68rem;font-weight:700;letter-spacing:.06em;text-align:center;color:var(--ink-3)}.lang-picker__label{font-size:.95rem;font-weight:600}.lang-picker__option.is-active{background:linear-gradient(172deg,#40392f,#2b2620 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-6px;transform:rotate(45deg);background:var(--surface-2);border-right:1px solid var(--line-strong);border-bottom:1px solid var(--line-strong);border-bottom-right-radius:3px}.share__item{display:flex;align-items:center;gap:11px;width:100%;padding:10px 12px;border-radius:var(--radius-sm);font-size:.92rem;font-weight:500;text-align:left;text-decoration:none;color:var(--ink-2);transition:background var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease),transform var(--dur-fast) var(--ease)}.share__item:hover{background:var(--surface-3);color:var(--ink);transform:translate(2px)}.share__glyph{display:grid;place-items:center;width:30px;height:30px;flex:none;border-radius:50%;color:#fff;box-shadow:inset 0 1px #ffffff4d,0 1px 3px #3a2b1638}.share__item[data-target=x] .share__glyph{background:linear-gradient(168deg,#2a2a2a,#000)}.share__item[data-target=facebook] .share__glyph{background:linear-gradient(168deg,#2d88ff,#1877f2)}.share__item[data-target=whatsapp] 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var(--line);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow-sm)}.stat-tile__value{font-family:var(--font-display);font-size:1.6rem;font-weight:600;line-height:1.1;letter-spacing:-.01em}.stat-tile__label{font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);margin-top:4px}.stat-tile__hint{font-size:.76rem;color:var(--ink-3);margin-top:2px}.track-list{display:flex;flex-direction:column;gap:4px;padding:6px 16px}.track{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid 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dd{text-align:left}}.empty-state{display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;padding:40px 22px}.empty-state__title{font-size:1.4rem}.empty-state__body{color:var(--ink-2);max-width:46ch}.empty-state__actions{display:flex;flex-wrap:wrap;gap:9px;justify-content:center}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;display:grid;place-items:center;padding:20px;background:#1e191285;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);animation:fade-in var(--dur) var(--ease) both}@keyframes fade-in{0%{opacity:0}to{opacity:1}}.modal{width:min(420px,100%);max-height:100%;overflow-y:auto;overscroll-behavior:contain;background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:26px 22px;animation:modal-in .36s var(--ease) both}@keyframes modal-in{0%{opacity:0;transform:translateY(16px) 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760px){.id-launcher{order:-1;margin:-8px 4px -8px 0}}.id-launcher:active{transform:translateY(1px)}.id-launcher:focus-visible{outline:2px solid var(--ochre-deep);outline-offset:3px;border-radius:50%}.id-launcher__coin{position:relative;z-index:2;width:40px;height:40px;border-radius:50%;overflow:hidden;display:block;filter:drop-shadow(0 2px 3px rgba(58,43,22,.34))}.id-launcher__coin .art{display:block;width:40px;height:40px;border:0;background:none}.id-launcher__coin .art--fallback{display:flex;align-items:center;justify-content:center;color:var(--ochre-deep)}.id-launcher__sheen{position:absolute;top:-30%;right:-60%;bottom:-30%;left:-60%;pointer-events:none;transform:translate(-140%) rotate(-18deg);background:linear-gradient(90deg,transparent 0%,rgba(255,252,236,.15) 34%,rgba(255,255,250,.82) 50%,rgba(255,252,236,.15) 66%,transparent 100%)}.id-launcher__halo{position:absolute;z-index:1;top:50%;left:50%;width:40px;height:40px;margin:-20px 0 0 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var(--line)}.ad-inspector__id{font-family:var(--font-mono);font-size:.78rem;color:var(--ink)}.ad-inspector__meta{font-size:.72rem;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-3)}.ad-inspector__why{font-size:.82rem;line-height:1.45;color:var(--ink-2)}.ad-exclusions{margin:12px 0 0;padding-left:18px}.ad-exclusions li{margin-bottom:8px;font-size:.82rem;line-height:1.45;color:var(--ink-2)}.ad-exclusions strong{color:var(--ink)}.lesson-scope{--obsidian-950: #050608;--obsidian-900: #0a0c0f;--obsidian-850: #101317;--obsidian-800: #161a20;--charcoal-700: #1e232a;--charcoal-600: #282e37;--charcoal-500: #343b46;--charcoal-400: #454d5a;--charcoal-300: #5a6270;--gold-100: #f7e6bd;--gold-200: #f0d18f;--gold-300: #e0b464;--gold-400: #c99a4a;--gold-500: #b8853f;--gold-600: #8f6529;--gold-700: #5e4319;--gold-800: #33240d;--verdigris-200: #a8ded6;--verdigris-300: #7cc4bb;--verdigris-400: #5f9791;--verdigris-500: #3f6f6b;--verdigris-600: #254745;--ivory-50: #fbf8f2;--ivory-100: #f0ece2;--ivory-200: #d8d3c6;--ivory-300: #b4ae9f;--ivory-400: #8a8578;--red-500: #fd0202;--red-400: #ff3a30;--red-600: #d10a05;--surface-case: var(--obsidian-950);--surface-base: var(--obsidian-900);--surface-panel: var(--obsidian-850);--surface-raised: var(--obsidian-800);--surface-plinth: var(--charcoal-700);--surface-glass: rgba(22, 26, 32, .62);--text-primary: var(--ivory-50);--text-secondary: var(--ivory-200);--text-muted: var(--ivory-400);--text-accent: var(--gold-300);--text-data: var(--verdigris-300);--text-on-gold: var(--obsidian-950);--line-hairline: rgba(240, 236, 226, .1);--line-soft: rgba(240, 236, 226, .18);--line-gold: rgba(224, 180, 100, .42);--accent-primary: var(--gold-500);--accent-primary-hover: var(--gold-400);--measure: var(--red-500);--measure-text: var(--red-400);--state-correct: var(--verdigris-300);--state-correct-bg: rgba(95, 151, 145, .16);--state-incorrect: var(--red-600);--state-incorrect-bg: rgba(209, 10, 5, .14);--focus-ring: var(--gold-300);--font-display: "Bodoni Moda", "Didot", Georgia, "Times New Roman", serif;--font-sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;--font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;--tracking-label: .16em;--tracking-eyebrow: .34em;--tracking-mono: .06em;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--gutter-phone: 20px;--tap-target: 44px;--radius-xs: 2px;--radius-sm: 4px;--radius-md: 8px;--radius-circle: 50%;--shadow-plaque: 0 1px 0 rgba(240, 236, 226, .06), 0 8px 24px rgba(0, 0, 0, .55);--shadow-panel: 0 24px 60px rgba(0, 0, 0, .62);--shadow-artifact: 0 48px 90px rgba(0, 0, 0, .78);--shadow-inset-case: inset 0 0 140px rgba(0, 0, 0, .92);--gradient-gold-rule: linear-gradient( 90deg, transparent, var(--gold-500) 22%, var(--gold-200) 50%, var(--gold-500) 78%, transparent );--gradient-case-vignette: radial-gradient( ellipse 78% 56% at 50% 40%, rgba(38, 32, 22, .55) 0%, rgba(10, 12, 15, .9) 58%, var(--obsidian-950) 100% );--ease-exhibit: cubic-bezier(.22, .61, .36, 1);--ease-lens: cubic-bezier(.16, .84, .24, 1);--dur-instant: .12s;--dur-quick: .22s;--dur-base: .42s;--dur-cinematic: 1.2s;--transition-hover: color var(--dur-quick) var(--ease-exhibit), background-color var(--dur-quick) var(--ease-exhibit), border-color var(--dur-quick) var(--ease-exhibit), opacity var(--dur-quick) var(--ease-exhibit);--press-scale: .985}.lesson-scope{background:var(--surface-base);background-image:var(--gradient-case-vignette);color:var(--text-primary);font:400 17px/1.5 var(--font-sans);border-radius:var(--radius-md);box-shadow:var(--shadow-inset-case),var(--shadow-panel);overflow:hidden}.lesson-scope *:focus-visible{outline:3px solid var(--focus-ring);outline-offset:1px}.lesson-eyebrow{margin:0;font:500 13px/1.2 var(--font-sans);letter-spacing:var(--tracking-eyebrow);text-transform:uppercase;color:var(--text-accent)}.lesson-rule{height:1px;border:0;margin:var(--space-4) 0;background:var(--gradient-gold-rule)}.lesson-title{margin:var(--space-3) 0 0;font:400 38px/1.04 var(--font-display);letter-spacing:-.012em;text-transform:uppercase;color:var(--text-primary)}.lesson-catalogue{font:400 13px/1.4 var(--font-mono);letter-spacing:var(--tracking-mono);color:var(--text-muted)}.lesson-back{display:inline-flex;align-items:center;gap:var(--space-2);min-height:var(--tap-target);padding:0 var(--space-2);background:none;border:0;cursor:pointer;font:500 13px/1.2 var(--font-sans);letter-spacing:var(--tracking-label);text-transform:uppercase;color:var(--text-muted);transition:var(--transition-hover)}.lesson-back:hover{color:var(--text-primary)}.series__head{padding:var(--space-8) var(--gutter-phone) var(--space-6);box-shadow:inset 0 -1px 0 var(--line-hairline)}.series__lede{margin:var(--space-5) 0 0;font:300 20px/1.5 var(--font-sans);color:var(--text-secondary);text-wrap:pretty}.series__bar{display:flex;align-items:center;justify-content:space-between;gap:var(--space-4);padding:var(--space-6) var(--gutter-phone) var(--space-3)}.series__count{flex:none;padding:var(--space-1) var(--space-3);border-radius:var(--radius-xs);box-shadow:inset 0 0 0 1px var(--line-soft);font:400 13px/1.4 var(--font-mono);letter-spacing:var(--tracking-mono);color:var(--text-muted)}.series__list{padding:0 var(--space-2) var(--space-10)}.series__row{display:flex;align-items:center;gap:var(--space-4);width:100%;min-height:72px;padding:var(--space-4);border:0;text-align:left;background:transparent;box-shadow:inset 0 -1px 0 var(--line-hairline);transition:var(--transition-hover)}.series__row--ready{cursor:pointer}.series__row--ready:hover{background:#f0ece20a}.series__row--ready:active{transform:scale(var(--press-scale))}.series__thumb{display:grid;place-items:center;flex:none;width:44px;height:44px;border-radius:var(--radius-xs);overflow:hidden}.series__thumb--ready{background:var(--surface-raised);box-shadow:inset 0 0 0 1px var(--line-gold)}.series__thumb--pending{box-shadow:inset 0 0 0 1px var(--line-hairline)}.series__silhouette{width:20px;height:36px;fill:var(--gold-300);opacity:.85}.series__dot{width:8px;height:8px;border-radius:var(--radius-circle);box-shadow:inset 0 0 0 1px var(--charcoal-300)}.series__body{display:flex;flex-direction:column;gap:2px;flex:1 1 0;min-width:0}.series__name{font:400 20px/1.22 var(--font-display);letter-spacing:.05em;text-transform:uppercase;white-space:nowrap;color:var(--text-primary)}.series__row:not(.series__row--ready) .series__name{color:var(--text-muted)}.series__meta{font:400 11px/1.4 var(--font-mono);letter-spacing:var(--tracking-mono);color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}.series__state{flex:0 0 auto;font:500 10px/1.2 var(--font-sans);letter-spacing:var(--tracking-label);text-transform:uppercase;color:var(--charcoal-300);white-space:nowrap}.series__chevron{flex:none;color:var(--gold-300)}.lessonview__head{padding:var(--space-5) var(--gutter-phone) var(--space-6)}.lessonview__sub{margin:var(--space-2) 0 0;font:400 15px/1.5 var(--font-sans);color:var(--text-secondary)}.lessonview__stage{position:relative;display:grid;place-items:center;padding:var(--space-8) var(--gutter-phone);background:var(--surface-case);box-shadow:var(--shadow-inset-case)}.lessonview__plate{width:auto;height:320px;max-width:100%;filter:drop-shadow(var(--shadow-artifact))}.lessonview__outline{fill:#f0ece20d;stroke:var(--gold-300);stroke-width:6;vector-effect:non-scaling-stroke}.lessonview__pin{fill:var(--gold-200)}.lessonview__pinring{fill:none;stroke:var(--gold-300);stroke-width:4;opacity:.55}.lessonview__stagenote{margin:var(--space-5) 0 0;font:400 13px/1.4 var(--font-mono);letter-spacing:var(--tracking-mono);text-align:center;color:var(--text-muted)}.lessonview__section{padding:var(--space-6) var(--gutter-phone);box-shadow:inset 0 1px 0 var(--line-hairline)}.lessonview__h{margin:0 0 var(--space-4);font:500 13px/1.2 var(--font-sans);letter-spacing:var(--tracking-eyebrow);text-transform:uppercase;color:var(--text-accent)}.keychips{display:flex;flex-wrap:wrap;gap:var(--space-2);margin:0;padding:0;list-style:none}.keychips__item{padding:var(--space-2) var(--space-3);border-radius:var(--radius-xs);background:#b8853f1a;box-shadow:inset 0 0 0 1px var(--line-gold);font:500 13px/1.2 var(--font-sans);letter-spacing:var(--tracking-label);text-transform:uppercase;color:var(--gold-200)}.specs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-4);margin:0}.specs__label{font:500 13px/1.2 var(--font-mono);letter-spacing:var(--tracking-label);text-transform:uppercase;color:var(--text-muted)}.specs__value{margin:var(--space-1) 0 0;font:600 20px/1 var(--font-mono);letter-spacing:var(--tracking-mono);color:var(--text-primary)}.specs__value--measure{color:var(--measure-text)}.featurelist{display:flex;flex-direction:column;gap:var(--space-5);margin:0;padding:0;list-style:none}.featurelist__item{padding-left:var(--space-4);box-shadow:inset 2px 0 0 var(--line-gold)}.featurelist__eyebrow{font:500 10px/1.2 var(--font-sans);letter-spacing:var(--tracking-eyebrow);text-transform:uppercase;color:var(--text-data)}.featurelist__label{margin:var(--space-2) 0 0;font:500 24px/1.22 var(--font-display);color:var(--text-primary)}.featurelist__def{margin:var(--space-2) 0 0;font:400 15px/1.5 var(--font-sans);color:var(--text-secondary);text-wrap:pretty}.featurelist__note{margin:var(--space-2) 0 0;font:400 15px/1.5 var(--font-sans);color:var(--text-muted);text-wrap:pretty}.typology{display:flex;flex-direction:column;gap:var(--space-4);margin:0}.typology__row{display:grid;gap:var(--space-1)}.typology__label{font:500 13px/1.2 var(--font-mono);letter-spacing:var(--tracking-label);text-transform:uppercase;color:var(--text-muted)}.typology__value{margin:0;font:400 15px/1.5 var(--font-sans);color:var(--text-secondary);text-wrap:pretty}.lquiz__prompt{margin:0 0 var(--space-5);font:400 24px/1.22 var(--font-display);color:var(--text-primary);text-wrap:pretty}.lquiz__options{display:flex;flex-direction:column;gap:var(--space-2)}.lquiz__option{min-height:var(--tap-target);padding:var(--space-3) var(--space-4);text-align:left;border:0;border-radius:var(--radius-sm);background:var(--surface-raised);box-shadow:inset 0 0 0 1px var(--line-hairline);color:var(--text-secondary);font:400 15px/1.5 var(--font-sans);cursor:pointer;transition:var(--transition-hover)}.lquiz__option:hover:not(:disabled){background:var(--surface-plinth);color:var(--text-primary)}.lquiz__option:disabled{cursor:default}.lquiz__option--correct{background:var(--state-correct-bg);box-shadow:inset 0 0 0 1px var(--state-correct);color:var(--text-primary)}.lquiz__option--wrong{background:var(--state-incorrect-bg);box-shadow:inset 0 0 0 1px var(--state-incorrect);color:var(--text-primary)}.lquiz__feedback{margin:var(--space-4) 0 0;font:400 15px/1.5 var(--font-sans);color:var(--text-secondary);text-wrap:pretty}.lquiz__feedback--correct{color:var(--state-correct)}.lquiz__progress{margin:0 0 var(--space-3);font:400 13px/1.4 var(--font-mono);letter-spacing:var(--tracking-mono);color:var(--text-muted)}.lesson-btn{display:inline-flex;align-items:center;justify-content:center;width:100%;min-height:var(--tap-target);margin-top:var(--space-5);padding:0 var(--space-5);border:0;border-radius:var(--radius-sm);background:var(--accent-primary);color:var(--text-on-gold);font:500 15px/1.2 var(--font-sans);letter-spacing:var(--tracking-label);text-transform:uppercase;cursor:pointer;transition:var(--transition-hover)}.lesson-btn:hover{background:var(--accent-primary-hover)}.lesson-btn:active{transform:scale(var(--press-scale))}.lesson-btn--quiet{background:transparent;color:var(--text-secondary);box-shadow:inset 0 0 0 1px var(--line-soft)}.lesson-btn--quiet:hover{background:#f0ece20a;color:var(--text-primary)}.lesson-pending{padding:var(--space-10) var(--gutter-phone);text-align:center}.lesson-pending__body{margin:var(--space-4) auto 0;max-width:46ch;font:400 15px/1.5 var(--font-sans);color:var(--text-muted);text-wrap:pretty}.lessonframe{display:grid;justify-items:center;gap:14px;margin-inline:calc(var(--gutter) * -1);padding:0}.lessonframe__frame{width:100%;height:calc(100dvh - var(--bottomnav-h));border:0;background:#14141a}.lessonframe__note{margin:0;font:400 13px/1.4 var(--font-mono);letter-spacing:.04em;color:var(--ink-3)}.lessonframe__link{color:var(--ochre-deep)}@media (max-width: 719px){.shell--immersive .topbar,.shell--immersive .sitefoot,.shell--immersive .lessonframe__note{display:none}.shell--immersive .main{padding:0}.shell--immersive .lessonframe{margin-inline:0;gap:0}.shell--immersive{background:#050608}.shell--immersive .bottomnav{background:#0a0c0ff2;border-top:1px solid rgba(240,236,226,.1)}.shell--immersive .bottomnav__link{color:#8a8578}.shell--immersive .bottomnav__link.is-active{color:#e0b464}.shell--immersive .lessonframe__frame{height:calc(100dvh - var(--bottomnav-h) - env(safe-area-inset-bottom))}}@media (min-width: 720px){.lessonframe{margin-inline:calc(var(--gutter) * -1);padding:30px var(--gutter) 22px;border-radius:var(--radius-lg);background:radial-gradient(120% 78% at 50% 0%,rgba(224,180,100,.11),transparent 62%),linear-gradient(180deg,#0a0c0f,#050608)}.lessonframe__frame{width:min(680px,100%);height:clamp(680px,calc(100dvh - 120px),1100px);border-radius:28px;box-shadow:0 40px 90px #0000008c,0 0 0 1px #f0ece21a}.lessonframe__note{color:#f0ece28c}.lessonframe__link{color:#e0b464}}.prail{padding:var(--space-4) var(--gutter-phone) 0}.prail__rules{display:flex;gap:var(--space-3)}.prail__cell{flex:1;display:flex;flex-direction:column;gap:var(--space-3);min-width:0}.prail__rule{height:2px;border-radius:1px;background:var(--charcoal-500);transition:background var(--dur-base) var(--ease)}.prail__cell--done .prail__rule{background:var(--gold-300)}.prail__cell--on .prail__rule{background:var(--gold-300);box-shadow:0 0 10px 0 var(--gold-soft)}.prail__cell--next .prail__rule{background:var(--gold-600)}.prail__name,.prail__active{font:400 11px/1.2 var(--font-mono);letter-spacing:var(--tracking-eyebrow, .14em);text-transform:uppercase;color:var(--text-muted)}.prail__active{margin:var(--space-3) 0 0;color:var(--text-accent)}.prail--all .prail__name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lessonview__camera{transform-box:view-box;transform-origin:0 0;transition:transform var(--dur-cinematic) var(--ease-lens)}.lessonview__plate{opacity:0;transition:opacity var(--dur-slow) var(--ease-exhibit),transform var(--dur-cinematic) var(--ease-exhibit)}.lessonview__plate.is-revealed{opacity:1}.lessonview__plate.is-flipped{transform:scaleX(-1)}.lessonview__contour{stroke:var(--gold-200);stroke-width:5;opacity:.9;vector-effect:non-scaling-stroke}.lessonview__bracket{fill:var(--gold-300);opacity:.8}.lessonview__axis line{stroke:var(--measure);stroke-width:4;vector-effect:non-scaling-stroke}.sband{width:100%;min-height:96px;margin:var(--space-5) 0 0;text-align:center;animation:sband-in var(--dur-base) var(--ease-exhibit) both}@keyframes sband-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.sband__eyebrow{margin:0 0 var(--space-2);font:400 11px/1.2 var(--font-mono);letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--text-muted)}.sband__label{margin:0;font:400 20px/1.25 var(--font-display);color:var(--text-primary)}.sband__lede,.sband__body{margin:var(--space-3) 0 0;font:400 15px/1.5 var(--font-sans);color:var(--text-secondary);text-wrap:pretty}.sband__note{margin:var(--space-2) 0 0;font:400 13px/1.45 var(--font-sans);color:var(--text-muted);text-wrap:pretty}.sband__measure{margin:0;font:400 15px/1.4 var(--font-mono);letter-spacing:var(--tracking-mono);color:var(--measure-text)}.sband__notes{margin:0;padding:0;list-style:none;display:grid;gap:var(--space-2);font:400 14px/1.45 var(--font-sans);color:var(--text-secondary)}.sband__typology{margin:0;display:grid;gap:var(--space-2);font:400 13px/1.4 var(--font-sans)}.sband__typology div{display:flex;justify-content:center;gap:var(--space-3)}.sband__typology dt{color:var(--text-muted)}.sband__typology dd{margin:0;color:var(--text-primary)}.transport{padding:var(--space-4) var(--gutter-phone) var(--space-6)}.transport__meter{height:2px;border-radius:1px;background:var(--charcoal-600);overflow:hidden}.transport__fill{display:block;height:100%;background:var(--gold-400);transition:width var(--dur-quick) linear}.transport__scene{display:flex;align-items:baseline;justify-content:space-between;gap:var(--space-3);margin:var(--space-3) 0 var(--space-4)}.transport__count{font:400 11px/1.2 var(--font-mono);letter-spacing:var(--tracking-mono);text-transform:uppercase;color:var(--text-muted);white-space:nowrap}.transport__name{font:400 14px/1.3 var(--font-sans);color:var(--text-primary);text-align:right}.transport__controls{display:flex;align-items:center;gap:var(--space-3)}.transport__controls .lesson-btn{flex:1;margin:0}.transport__btn{flex:0 0 auto;width:44px;height:44px;border:1px solid var(--charcoal-400);border-radius:var(--radius-sm, 8px);background:transparent;color:var(--text-secondary);font-size:22px;line-height:1;cursor:pointer;transition:border-color var(--dur-fast) var(--ease),color var(--dur-fast) 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