:root{color-scheme:light;--bg:#f6f7f2;--paper:#fff;--ink:#263022;--muted:#6a7466;--line:#dfe4d8;--accent:#d8eca9;--green:#167b73;--orange:#cf6743;--surface:#fcfdf9;--stage:#f7f9f2;--tint:#edf1e5;--selected:#e5edda;--on-ink:#f8fbf0;--button-hover:#3d4c34;--hover-line:#98ac85;--shadow:#2630220a;--grid:#d9ddd6;--body-fill:#e8e9e4;--body-outline:#c7ccc3;--body:#d8ddd4;--arm:#bec8bc;--floor:#d0d5cb;--staff-hole:#fafbf7;--map-line:#a7b5a5;--hand-fill:#eeece3;--hand-outline:#9ca99b;--thumb:#a22f73;--pinky:#9a6900;--font:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
:root[data-theme=dark]{color-scheme:dark;--bg:#111216;--paper:#1d1f25;--ink:#e7e8ec;--muted:#a6a9b2;--line:#34373f;--accent:#a9b8ed;--green:#8aacf8;--orange:#f1a17c;--surface:#191b20;--stage:#15171c;--tint:#22252c;--selected:#303745;--on-ink:#15171c;--button-hover:#c5cad5;--hover-line:#8d99b3;--shadow:#00000030;--grid:#2d3038;--body-fill:#353942;--body-outline:#4e535e;--body:#404650;--arm:#6f7887;--floor:#454b56;--staff-hole:#15171c;--map-line:#727c8d;--hand-fill:#404650;--hand-outline:#aeb6c5;--thumb:#ee91c1;--pinky:#f2d184}
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p{margin:0;margin-right:auto}.page{padding-top:65px;padding-bottom:80px}.page-intro{max-width:690px;margin-bottom:50px}.page-intro>p:not(.eyebrow){font-size:15px;max-width:520px;color:var(--muted)}.page-intro.compact h1{font-size:53px}.library-tools{display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);padding-bottom:26px}.search-field{display:flex;align-items:center;gap:13px;background:var(--paper);border:1px solid var(--line);border-radius:5px;width:420px;padding:10px 15px}.search-field>span{font-size:24px;line-height:1;color:var(--muted)}.search-field input{border:0;outline-offset:10px;min-width:0;width:100%;background:transparent;font-size:13px}.library-tools p{font-size:11px;color:var(--muted);margin:0}.course-section{padding-top:55px}.small-link{font-size:11px;color:var(--muted);white-space:nowrap}.lesson-row{display:flex;align-items:center;gap:26px;padding:24px 8px;border-top:1px solid 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var(--line);padding:15px 0}.grip-inset p{font-size:10px;color:var(--muted);text-align:center}.lesson-pagination{display:flex;justify-content:space-between;gap:30px;margin-top:50px;border-top:1px solid var(--line);padding-top:25px;font-size:13px}.lesson-pagination a:last-child{text-align:right}.lesson-pagination small{display:block;font-size:8px;color:var(--muted);letter-spacing:.12em;margin-bottom:7px}.source-stage{background:var(--tint);border:1px solid var(--line);border-radius:8px;overflow:hidden;aspect-ratio:16/10;display:flex;align-items:center;justify-content:center}.source-stage iframe,.source-stage video{width:100%;height:100%;border:0;display:block}.source-placeholder{padding:24px;text-align:center}.source-placeholder h3{font-size:23px}.source-placeholder p{font-size:12px;color:var(--muted);margin-bottom:20px}.source-play{display:block;font-size:27px;color:var(--green);margin-bottom:20px}.source-tools{display:flex;flex-wrap:wrap;gap:14px;align-items:center;font-size:10px;padding:14px 0;border-bottom:1px solid var(--line)}.source-tools>button{border:1px solid var(--line);background:var(--paper);border-radius:3px;padding:5px 9px}.source-tools select{font-size:10px;padding:4px;border:1px solid var(--line);border-radius:3px;background:var(--paper)}.source-tools label{display:flex;align-items:center;gap:6px}.source-tools input{accent-color:var(--green)}#source-status{font-size:10px;margin-top:12px;color:var(--muted)}.source-alternatives{display:flex;flex-wrap:wrap;gap:20px;font-size:10px}.file-label{cursor:pointer;color:var(--green);text-decoration:underline;text-underline-offset:3px}.file-label input{position:absolute;width:1px;height:1px;opacity:0}.source-only{padding:65px 35px;text-align:center;background:var(--tint);border-radius:7px;border:1px solid var(--line);min-height:360px}.source-only h3{font-size:27px}.source-only p{font-size:13px;color:var(--muted);max-width:410px;margin:0 auto 22px}.lab-layout{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(0,1fr);gap:55px;align-items:start}.lab-controls{padding-top:4px}.lab-controls>label{display:block;font-size:11px;color:var(--muted);margin-bottom:22px}.lab-controls>label select{display:block;width:100%;margin-top:9px;padding:12px;border:1px solid var(--line);border-radius:5px;background:var(--paper);font-size:13px;color:var(--ink)}.lab-explainer{margin:35px 0 22px}.lab-explainer h2{font-size:27px;margin:13px 0}.lab-explainer p{font-size:13px;color:var(--muted)}.lab-controls details{margin-top:30px}.vtg-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.timing-card{border:1px solid var(--line);background:var(--surface);border-radius:7px;padding:15px 22px 23px}.timing-card:hover{color:var(--ink);border-color:var(--hover-line)}.timing-card h2{font-size:21px;margin:10px 0}.timing-card p{font-size:12px;color:var(--muted);min-height:58px}.timing-card .eyebrow{margin-bottom:10px}.timing-card .small-link{color:var(--green)}.atlas-section{display:grid;grid-template-columns:1fr 1fr;gap:90px;align-items:center;margin-top:70px;padding-top:60px;border-top:1px solid var(--line)}.atlas-section p:not(.eyebrow){font-size:13px;color:var(--muted)}.atlas-section h2{font-size:40px}.transition-map{text-align:center;background:var(--tint);border-radius:8px;border:1px solid var(--line);padding:32px 22px;font-size:10px}.transition-map>span{border:1px solid var(--line);border-radius:4px;padding:10px 16px;display:inline-block;font-weight:600;background:var(--surface)}.transition-map>div,.transition-map>section{display:flex;justify-content:space-around;gap:12px;padding:15px 0}.transition-map i{font-style:normal;font-size:10px;color:var(--muted)}.transition-map section strong{font-weight:500;font-size:9px;letter-spacing:.04em}.poster-key{display:grid;grid-template-columns:1fr 1fr;gap:18px}.flower-diagram{background:var(--surface);border:1px solid var(--line);padding:15px;border-radius:6px}.flower-diagram span{font-size:9px;display:block;text-align:center;color:var(--muted)}.poster-key>div:last-child{grid-column:1/-1;font-size:12px}.poster-key p{margin-top:5px}.source-credit{margin-top:18px!important;font-size:10px!important}.reference-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:85px}.reference-grid h2{font-size:30px}.glossary>div{border-top:1px solid var(--line);padding:19px 0}.glossary dt{font-size:15px;font-weight:500;margin-bottom:7px}.glossary dd{font-size:12px;color:var(--muted)}.reference-aside{background:var(--tint);border:1px solid var(--line);border-radius:8px;padding:30px;align-self:start}.reference-aside p{font-size:12px;color:var(--muted)}.reference-aside h3{font-size:19px;letter-spacing:-.025em;margin-top:28px}.sources-section{border-top:1px solid var(--line);margin-top:70px;padding-top:50px;max-width:900px}.sources-section>p{font-size:13px;color:var(--muted)}.sources-section a{text-decoration:underline;text-underline-offset:3px}.sources-section details li{font-size:12px;padding:5px 0}.sources-section h3{margin-top:35px;font-size:24px}.sources-section .eyebrow{font-size:10px}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(min-width:1600px){.lesson-main{padding-left:65px;padding-right:65px}.lesson-workspace{grid-template-columns:minmax(0,1fr) 300px}}
@media(max-width:1150px){.site-header{padding:0 30px;gap:20px}.wrap{width:calc(100% - 60px)}.header-note{display:none}.hero{gap:35px}.hero h1{font-size:72px}.lesson-layout{grid-template-columns:200px minmax(0,1fr)}.lesson-sidebar{padding:24px 12px}.lesson-main{padding:32px 28px}.lesson-workspace{grid-template-columns:minmax(0,1fr) 205px;gap:22px}.lesson-heading h1{font-size:38px}.lesson-lower{gap:25px}.cue-list dd{font-size:10px}.lab-layout{gap:30px}.vtg-grid{gap:14px}.timing-card{padding:12px 15px 20px}.timing-card h2{font-size:18px}.atlas-section{gap:40px}}
@media(max-width:900px){.hero{gap:25px;grid-template-columns:1fr 1fr}.hero h1{font-size:65px}.hero-footnote{gap:8px;font-size:9px}.hero-footnote span+span:before{padding-right:8px}.hero-description{font-size:13px}.diagram-label{font-size:8px}.stage-toolbar{padding:12px 12px 6px}.view-buttons button{min-width:36px;padding:4px 5px}.diagram-legend{gap:9px;font-size:8px}.display-options{gap:10px;font-size:9px}.how-grid{gap:25px}.how-grid>div{padding-left:22px}.how-grid h2{font-size:17px}.site-footer{padding:26px 30px;flex-wrap:wrap;gap:18px}.site-footer p{flex:1;font-size:10px}.lesson-layout{grid-template-columns:180px minmax(0,1fr)}.lesson-workspace{grid-template-columns:1fr}.move-context{padding-top:0;display:grid;grid-template-columns:1fr 1fr;gap:0 20px}.move-context h2,.move-context>p,.move-context>a{grid-column:1}.move-context .cue-list{grid-column:2;grid-row:1/6;margin-top:0}.move-context .eyebrow{margin-bottom:10px;align-self:end}.lesson-heading-meta{gap:10px}.practice-button{margin-left:0}.lesson-lower{grid-template-columns:1fr}.practice-panel{grid-row:1}.vtg-grid{grid-template-columns:repeat(2,1fr)}.reference-grid{gap:35px}.atlas-section{gap:35px}.atlas-section h2{font-size:34px}}
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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}

.study-caption{padding:16px 22px;border-top:1px solid var(--line);background:var(--tint)}.study-caption strong{font-size:14px}.study-caption p,.model-note{font-size:12px;line-height:1.6;color:var(--muted)}.study-caption p{margin:5px 0 0}.model-note{margin:0;padding:0 22px 18px}.diagram-label{max-width:48%;line-height:1.5}.view-buttons button{padding:7px 9px}@media(max-width:600px){.stage-toolbar{gap:8px}.diagram-label{font-size:9px}.view-buttons button{padding:8px 6px}.study-caption{padding:14px 16px}.model-note{padding:0 16px 14px}}

.auto-advance{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);margin-top:18px}.auto-advance input{accent-color:var(--green)}

input,select,option{color:var(--ink)}.theme-toggle{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid var(--line);border-radius:5px;min-height:36px;padding:7px 10px;font-size:11px;flex-shrink:0;background:var(--paper)}.theme-toggle:hover{border-color:var(--green)}.theme-toggle svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}:root[data-theme=dark] .theme-sun,:root[data-theme=light] .theme-moon{display:none}.grip-inset svg text{fill:var(--ink)}@media(max-width:680px){.site-header{gap:12px}.theme-toggle{margin-left:auto;min-height:36px;padding:7px 9px}.site-header nav{font-size:12px;justify-content:space-between;gap:12px}}

.hero{grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr);padding-top:45px;padding-bottom:40px;gap:40px}.hero h1{font-size:clamp(38px,4vw,58px);line-height:1.1;letter-spacing:-.045em}.hero-description{font-size:14px;max-width:270px}.hero-actions{margin:24px 0;gap:20px}.hero-footnote{margin-top:24px}.curriculum-section{border-top:1px solid var(--line);padding:38px 0}.site-footer .brand{margin-right:auto}.vtg-banner{padding:28px 36px}.vtg-banner svg{max-height:180px}.vtg-banner h2{font-size:30px}.page-intro h1{font-size:48px}.page-intro{margin-bottom:32px}@media(max-width:680px){.hero{display:flex;gap:24px}.hero h1{font-size:40px;margin-bottom:14px}.hero-description{max-width:none}.hero-actions{margin:16px 0}.hero-footnote{margin-top:16px}.page-intro h1{font-size:36px}}