*{box-sizing:border-box}body{margin:0;background:var(--surface);color:var(--ink);font-family:var(--font-sans);font-feature-settings:'cv05','cv08','zero';-webkit-font-smoothing:antialiased}button,input,a{touch-action:manipulation}button,a{color:inherit}a{color:var(--teal-text);text-decoration:none}a:hover{text-decoration:underline}button{font:600 13px var(--font-sans);border:1px solid var(--line);border-radius:var(--radius-full);background:var(--surface);padding:10px 17px;cursor:pointer;line-height:1.2;white-space:nowrap}button:hover{background:var(--surface-subtle)}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--brand-pressed);outline-offset:4px}button:disabled{opacity:.4;cursor:wait}.top{height:72px;display:flex;align-items:center;gap:26px;max-width:1480px;margin:auto;padding:0 38px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center}.brand img{width:152px;height:auto;display:block}.project-name{padding-left:23px;border-left:1px solid var(--line);font-family:var(--font-display);font-size:22px;font-weight:600}.edition{margin-left:auto;color:var(--ink-muted);font-size:12px}.top-link{font-size:12px;font-weight:600}.scene-tabs{display:flex;justify-content:center;gap:36px;padding:0 20px;margin:0 auto;height:57px;align-items:stretch}.scene-tabs button{border:0;border-radius:0;padding:0 10px;background:transparent;color:var(--ink-muted);font-size:14px;border-bottom:2px solid transparent}.scene-tabs button span{font-family:var(--font-mono);font-size:11px;margin-right:9px;color:var(--ink-muted)}.scene-tabs [aria-selected=true]{color:var(--teal);border-bottom-color:var(--teal);font-weight:700}.scene-tabs [aria-selected=true] span{color:var(--teal)}main{max-width:1440px;padding:0 28px;margin:0 auto}#frame{position:relative;width:100%;height:min(60vw,calc(100vh - 295px));min-height:390px;max-height:850px;isolation:isolate;overflow:hidden}three-d-stage{width:100%;height:100%;display:block}three-d-stage:not(:defined){visibility:hidden}.scene-heading{position:absolute;top:18px;left:20px;pointer-events:none;max-width:76%}#eyebrow{font-size:10px;letter-spacing:.12em;color:var(--teal-text);font-weight:600;margin:0 0 4px}h1{font-family:var(--font-display);font-weight:700;letter-spacing:-.025em;font-size:38px;line-height:1.15;margin:0 0 4px}#subtitle{font-size:13px;color:var(--ink-muted);margin:0}.live-label{position:absolute;right:20px;top:24px;font-size:9px;font-weight:600;letter-spacing:.1em;color:var(--ink-muted);display:flex;align-items:center;gap:6px}.live-label:before{content:'';width:5px;height:5px;border-radius:50%;background:var(--teal)}#labels{position:absolute;inset:0;pointer-events:none}.world-label{position:absolute;transform:translate(-50%,-50%);font-size:10px;font-weight:600;padding:5px 9px;background:rgba(255,255,255,.91);border:1px solid var(--line);border-radius:var(--radius-full);color:var(--teal);white-space:nowrap}.scene-caption{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);width:max-content;max-width:94%;text-align:center;pointer-events:none}.scene-caption #phase{display:inline-block;font-size:9px;text-transform:uppercase;letter-spacing:.14em;color:var(--teal-text);font-weight:700;background:var(--surface);padding:4px 8px}.scene-caption p{margin:0;font-size:17px;line-height:1.45;font-weight:500;background:rgba(255,255,255,.95);padding:4px 12px}.lesson-bar{display:flex;justify-content:space-between;gap:20px;align-items:center;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:17px 20px}.metrics{display:flex;gap:45px}.metric{min-width:95px;display:flex;flex-direction:column;gap:4px}.metric small{font-size:10px;color:var(--ink-muted)}.metric strong{font-size:22px;font-weight:600;font-variant-numeric:tabular-nums;color:var(--teal)}.experiment{display:flex;align-items:center;gap:20px}#scenario{font-size:11px;color:var(--ink-muted)}.primary{background:var(--brand-pressed);border-color:var(--brand-pressed);color:var(--on-brand);padding:13px 22px;font-size:13px}.primary:hover{background:var(--ink);border-color:var(--ink)}.transport{display:flex;gap:9px;align-items:center;padding:16px 20px}.transport button{font-size:11px;padding:9px 13px}#seek{flex:1;accent-color:var(--teal);min-width:65px;cursor:pointer;height:28px}#time{font-size:10px;font-family:var(--font-mono);color:var(--ink-muted);margin:0 9px}#film-link{margin-left:9px;font-size:11px;font-weight:600;white-space:nowrap}#tweaks{display:flex;align-items:center;gap:16px;padding:12px 20px;border-top:1px solid var(--line);font-size:12px}#tweaks[hidden]{display:none}#tweaks label{display:flex;align-items:center;gap:6px}#tweaks input{accent-color:var(--teal)}#tweaks button{font-size:11px}#tweaks span{color:var(--ink-muted);margin-left:auto;font-size:11px}.model-notes{margin:0 20px 20px;font-size:10px;line-height:1.6;color:var(--ink-muted)}.model-notes summary{cursor:pointer;max-width:max-content}.model-notes p{max-width:940px}#loading{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--surface);z-index:8;color:var(--ink-muted);font-size:13px}#loading[hidden]{display:none}.loader{width:32px;height:32px;border:2px solid var(--line);border-top-color:var(--teal);border-radius:50%;animation:spin 1s infinite linear}@keyframes spin{to{transform:rotate(360deg)}}#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);padding:13px 20px;background:var(--ink);color:var(--surface);border-radius:var(--radius-full);font-size:12px;z-index:50}.film-logo{display:none}.film .top,.film .scene-tabs,.film .lesson-bar,.film .transport,.film .model-notes,.film #tweaks{display:none!important}.film main{padding:0;max-width:none}.film #frame{width:100vw;height:100vh;max-height:none;min-height:0}.film .scene-heading{top:36px;left:48px}.film #eyebrow{font-size:12px}.film h1{font-size:46px}.film #subtitle{font-size:16px}.film .live-label{display:none}.film .scene-caption{bottom:35px}.film .scene-caption p{font-size:22px}.film .scene-caption #phase{font-size:11px}.film .world-label{font-size:12px}.film .film-logo{display:block;position:absolute;right:48px;top:40px;font-family:var(--font-display);font-size:22px;color:var(--teal)}.film .film-logo span{display:block;text-align:right;font-family:var(--font-sans);font-size:11px;font-weight:400;color:var(--ink-muted)}
@media(min-width:1600px){h1{font-size:44px}#subtitle{font-size:16px}.scene-caption p{font-size:22px}.world-label{font-size:13px}.metric strong{font-size:26px}.transport button{font-size:13px}}
@media(max-width:700px){.top{height:60px;padding:0 18px;gap:14px}.brand img{width:116px}.project-name{font-size:18px;padding-left:14px}.edition,.top-link{display:none}.scene-tabs{height:54px;gap:12px;padding:0 8px}.scene-tabs button{font-size:12px;padding:0 5px}.scene-tabs button span{font-size:9px;margin-right:3px}main{padding:0 10px}#frame{height:420px;min-height:0}.scene-heading{left:10px;top:14px;max-width:100%}h1{font-size:29px}#eyebrow{font-size:9px}#subtitle{font-size:11px;max-width:280px}.live-label{display:none}.world-label{font-size:8px;padding:4px 7px}.scene-caption{bottom:6px;max-width:96%}.scene-caption p{font-size:14px;line-height:1.45;min-width:300px;max-width:350px}.scene-caption #phase{font-size:8px}.lesson-bar{padding:14px 10px;display:block}.metrics{justify-content:space-between;gap:12px}.metric{min-width:0}.metric small{font-size:9px}.metric strong{font-size:20px}.experiment{margin-top:16px;justify-content:space-between;gap:10px}.primary{font-size:12px;padding:12px 16px}#scenario{font-size:10px}.transport{padding:12px 6px;flex-wrap:wrap;gap:8px}#seek{order:3;flex-basis:66%;min-width:60%}#time{order:4}#reset-view{margin-left:auto}#film-link{margin-left:auto}#tweaks-button{order:5}#tweaks{flex-wrap:wrap;padding:12px}#tweaks span{margin:0}.model-notes{margin:8px 8px 20px;font-size:10px}}
@media(prefers-reduced-motion:reduce){.loader{animation:none}}

#play{width:84px;min-width:84px;text-align:center}