:root{color-scheme:dark;--bg:#061a28;--panel:#0b2636;--line:#204052;--muted:#91afbf;--text:#eaf4f6;--cyan:#66e6d6;--orange:#ffb571;--blue:#7dbdff}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,Arial,Helvetica,sans-serif;font-size:15px}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:var(--text);border:1px solid var(--line);background:#0f3042;border-radius:8px;padding:10px 14px;transition:background .15s,border-color .15s}button:hover{background:#19445a;border-color:#568699}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--orange);outline-offset:4px}button:disabled{cursor:default;opacity:.35}button[aria-pressed="true"],button.active{color:#06252c;background:var(--cyan);border-color:var(--cyan)}a{color:var(--cyan);text-decoration:none}a:hover{text-decoration:underline}.masthead{height:65px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 30px;gap:15px}.catalogue{font-size:13px;color:#b7ced8}.brand{font-weight:800;letter-spacing:3px;font-size:22px}.brand span{font-size:10px;letter-spacing:2px;color:var(--muted);margin-left:16px;font-weight:600}.header-actions{display:flex;gap:8px}.quiet{background:transparent;font-size:12px;padding:8px 12px}#app{max-width:1920px;margin:auto;padding:20px 30px 12px;height:calc(100dvh - 65px);display:flex;flex-direction:column;gap:14px;min-height:700px}.lesson-top{display:flex;align-items:center;justify-content:space-between;flex-shrink:0}.eyebrow{font-size:10px;font-weight:700;letter-spacing:2.2px;color:var(--cyan);margin:0 0 7px}h1{font-size:32px;letter-spacing:-1.2px;margin:0;line-height:1.1}h1 span{color:var(--cyan)}.play{font-size:12px;padding:11px 15px}.chapters{display:flex;gap:5px;flex-shrink:0}.chapters button{flex:1;border-radius:4px;padding:7px 3px;background:transparent;font-size:11px;color:var(--muted);white-space:nowrap}.chapters button.active{background:#163d49;color:var(--cyan);border-color:#3d837f}.lesson-stage{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:26px;flex:1;min-height:0}.visual-wrap{position:relative;background:#092335;border:1px solid #1d3e50;overflow:hidden;border-radius:12px;min-height:315px}.visual-label,.visual-bottom{position:absolute;z-index:1;left:20px;right:20px;display:flex;justify-content:space-between;gap:12px;font-size:10px;font-weight:600;letter-spacing:1.2px;color:#a4bfce;pointer-events:none}.visual-label{top:16px}.visual-label i{display:inline-block;width:6px;height:6px;background:var(--cyan);border-radius:100%;margin-right:4px}.visual-bottom{bottom:14px;font-size:10px;font-weight:400;letter-spacing:.2px}.watermark{color:#bdd8e4}canvas{display:block;width:100%;height:100%;min-height:315px}.lesson-copy{overflow:auto;padding:9px 2px 5px 0;scrollbar-width:thin;scrollbar-color:#386070 transparent}.scene-number{font-size:11px;letter-spacing:1.5px;color:var(--muted);display:flex;align-items:baseline;gap:7px}.scene-number>span:first-child{color:var(--cyan);font-size:32px;letter-spacing:-1px;font-weight:500}.scene-number>span:last-child{margin-left:auto;font-size:9px;color:#88a9ba;text-transform:uppercase;letter-spacing:1.4px}h2{font-size:30px;font-weight:600;line-height:1.08;letter-spacing:-.9px;margin:18px 0 14px}.lead{color:#c1d5dd;font-size:14px;line-height:1.55;margin:0 0 18px}.facts{display:flex;flex-direction:column;gap:13px}.fact{padding-left:13px;border-left:2px solid #305b6a}.fact strong{font-weight:600;display:block;color:#f0f6f9;font-size:13px;margin-bottom:4px}.fact p{font-size:12px;color:#a4bdc9;line-height:1.5;margin:0}.callout{margin-top:20px;padding:12px 14px;background:#122d39;border-radius:7px;border-left:2px solid var(--orange);font-size:11px;color:#d8c4af;line-height:1.5}.controls{flex-shrink:0;min-height:115px;background:#0c2636;border:1px solid var(--line);border-radius:10px;padding:13px 17px;display:flex;align-items:center;gap:20px}.control-heading{min-width:150px;max-width:210px}.control-heading h3{font-size:14px;margin:0 0 6px;color:var(--cyan)}.control-heading p{font-size:11px;color:var(--muted);line-height:1.4;margin:0}.control-group{flex:1;min-width:0}.control-group label,.control-group .group-label{font-size:11px;display:flex;justify-content:space-between;gap:10px;color:#a9c3d0;margin:0 0 7px}.control-group output{color:var(--cyan);font-variant-numeric:tabular-nums}.control-group input[type=range]{width:100%;accent-color:var(--cyan);height:18px}.control-group input.orange{accent-color:var(--orange)}.control-group select{width:100%;border:1px solid #376173;background:#0b2535;color:var(--text);padding:8px;border-radius:6px}.mini-buttons{display:flex;flex-wrap:wrap;gap:7px}.mini-buttons button{font-size:11px;padding:8px 11px}.pod-control{flex:1;border-left:1px solid #2a495a;padding-left:18px}.pod-control h4{margin:0 0 9px;font-size:11px;letter-spacing:1px;color:var(--cyan)}.pod-control.orange h4{color:var(--orange)}.slider-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}.preset-row{display:flex;gap:6px;flex-wrap:wrap}.preset-row button{font-size:11px;padding:7px 9px}.readouts{display:flex;gap:14px}.readout{color:var(--muted);font-size:11px}.readout b{display:block;font-size:17px;font-weight:500;color:var(--text);margin-top:6px}.inline-hint{font-size:11px;line-height:1.4;color:#9eb9c6}.lesson-footer{height:43px;display:flex;gap:30px;align-items:center;flex-shrink:0}.nav-button{font-size:12px;min-width:110px}.primary{color:#092b34;background:var(--cyan);border-color:var(--cyan);font-weight:700}.primary:hover{background:#8af4e5}.footer-center{flex:1;display:flex;align-items:center;gap:16px;color:var(--muted);font-size:10px}.progress-track{height:3px;background:#254252;max-width:240px;width:25%;border-radius:5px;overflow:hidden}.progress-track>div{height:100%;background:var(--cyan);width:7.7%}.credit{margin-left:auto}dialog{background:#0b2535;color:var(--text);border:1px solid #426475;border-radius:15px;max-width:800px;width:calc(100% - 30px);max-height:85dvh;padding:28px;box-shadow:0 25px 120px #0009}dialog::backdrop{background:#00111bcb;backdrop-filter:blur(5px)}.dialog-head{display:flex;justify-content:space-between;align-items:flex-start;gap:20px}.dialog-head h2{font-size:27px;margin:8px 0 14px}.dialog-head button{background:transparent}.dialog-intro,.small{font-size:12px;line-height:1.6;color:var(--muted)}.source{padding:14px 0;border-top:1px solid #284858}.source a{display:block;font-size:14px;margin-bottom:5px}.source p{margin:0;font-size:12px;color:#9eb9c6;line-height:1.5}video{width:100%;max-height:65vh;background:#000}#toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:#e5f8f1;color:#092b34;border-radius:8px;max-width:90%;padding:12px 18px;font-size:12px;z-index:5;display:none}.quiz button{padding:9px 12px;text-align:left;flex:1}.quiz{display:flex;gap:10px;flex:1}.quiz.correct{border-color:var(--cyan)}.quiz-feedback{font-size:12px;color:var(--cyan);max-width:290px;line-height:1.5}.capture .masthead,.capture #app{pointer-events:none}.capture .header-actions,.capture .play{visibility:hidden}.capture #app{min-height:0}.capture .visual-wrap{border-radius:8px}.capture #toast{display:none!important}
@media(min-width:1650px){.masthead{height:78px;padding:0 44px}#app{height:calc(100dvh - 78px);padding:24px 44px 18px;gap:20px}.lesson-stage{grid-template-columns:minmax(0,1fr) 410px;gap:34px}h1{font-size:43px}.eyebrow{font-size:12px}.chapters button{font-size:13px;padding:10px 4px}.lesson-copy{padding:15px 0}.scene-number{font-size:13px}.scene-number>span:first-child{font-size:38px}.scene-number>span:last-child{font-size:11px}h2{font-size:39px;margin:21px 0}.lead{font-size:17px;line-height:1.55}.fact strong{font-size:16px}.fact p{font-size:14px}.facts{gap:17px}.callout{font-size:13px;margin-top:25px;padding:15px 17px}.controls{min-height:135px;padding:18px 23px;gap:28px}.control-heading{min-width:180px;max-width:250px}.control-heading h3{font-size:17px}.control-heading p,.inline-hint{font-size:13px}.control-group label,.control-group .group-label,.pod-control h4{font-size:13px}.mini-buttons button,.preset-row button{font-size:13px;padding:9px 12px}.footer-center{font-size:12px}.nav-button{font-size:14px;padding:12px 20px}.lesson-footer{height:48px}.visual-label{font-size:12px;top:20px;left:26px;right:26px}.visual-bottom{font-size:12px;bottom:20px;left:26px;right:26px}.readout{font-size:13px}.readout b{font-size:21px}.quiet,.play,.catalogue{font-size:14px}.quiz button,.quiz-feedback{font-size:14px}}
@media(max-width:1100px){.brand span{display:none}#app{padding:16px 20px 10px;gap:11px}.lesson-stage{grid-template-columns:minmax(0,1fr) 275px;gap:18px}h2{font-size:26px}.lead{font-size:13px}.facts{gap:10px}.fact p{font-size:11px}.callout{margin-top:13px}.controls{gap:12px;padding:12px}.control-heading{min-width:120px;max-width:160px}.credit{display:none}.chapters button{font-size:9px}.pod-control{padding-left:12px}.slider-row{gap:8px}.visual-label,.visual-bottom{left:12px;right:12px}}
@media(max-width:750px){.masthead{height:57px;padding:0 14px}.brand{font-size:18px}.catalogue{font-size:11px}.header-actions{gap:4px}.quiet{padding:6px;font-size:10px}#motionBtn{display:none}#app{height:auto;min-height:0;padding:17px 14px 20px;gap:13px}h1{font-size:27px}.eyebrow{font-size:8px;letter-spacing:1.7px}.play{font-size:10px;padding:8px}.chapters{overflow-x:auto;scrollbar-width:thin;padding-bottom:4px}.chapters button{min-width:54px;font-size:10px}.lesson-stage{display:flex;flex-direction:column;gap:13px}.visual-wrap{height:320px;min-height:320px}canvas{min-height:320px}.lesson-copy{overflow:visible;padding:0}.scene-number>span:first-child{font-size:25px}h2{font-size:27px;margin:11px 0}.lead{font-size:14px;margin-bottom:13px}.facts{display:grid;grid-template-columns:1fr 1fr;gap:13px}.fact strong{font-size:12px}.fact p{font-size:12px}.callout{font-size:12px}.controls{flex-wrap:wrap;gap:15px;min-height:0;padding:15px}.control-heading{min-width:100%;max-width:none}.control-heading h3{font-size:15px}.control-heading p{font-size:12px}.control-group{min-width:110px}.control-group label{font-size:12px}.pod-control{min-width:calc(50% - 10px);padding-left:0;border-left:none}.slider-row{grid-template-columns:1fr;gap:7px}.lesson-footer{position:sticky;bottom:0;z-index:2;background:#061a28f5;margin:0 -14px -20px;padding:10px 14px;height:62px;gap:12px;border-top:1px solid var(--line)}.nav-button{min-width:85px;font-size:11px;padding:10px}.footer-center{justify-content:center;font-size:10px;gap:8px}.progress-track{width:50%;min-width:30px}.visual-label,.visual-bottom{font-size:8px;letter-spacing:.5px}.watermark{font-size:9px}.quiz{flex-direction:column}.quiz button{font-size:12px}.quiz-feedback{max-width:none}.readouts{width:100%;justify-content:space-between}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}
@media(max-width:750px){.masthead{height:auto;min-height:57px;flex-wrap:wrap;padding:10px 14px;gap:9px}.header-actions{width:100%;justify-content:flex-end}.header-actions .quiet{padding:7px 10px}#motionBtn{display:block}.catalogue{font-size:12px}.brand{margin-left:auto}}

.photo-credit{position:absolute;bottom:42px;left:20px;right:20px;z-index:2;text-align:center;font-size:10px;background:#082332e8;border-radius:4px;padding:4px 9px;color:#c4d9e2}.photo-credit[hidden]{display:none}.image-modes{flex-shrink:0}.image-modes button{min-width:110px}@media(max-width:750px){.photo-credit{font-size:8px;bottom:34px;left:10px;right:10px}.image-modes{width:100%}.image-modes button{flex:1}}

.photo-credit{top:44px;bottom:auto;left:auto;right:20px;max-width:50%;font-size:10px;padding:5px 9px}@media(max-width:750px){.photo-credit{top:40px;bottom:auto;left:auto;right:10px;font-size:8px}}