@font-face{font-family:Inter;src:url('/fonts/inter-latin.woff2') format('woff2');font-weight:100 900;font-style:normal;font-display:swap}
:root{color-scheme:dark;--ground:#000;--surface:#111;--raised:#2a2a2a;--text:#fff;--muted:#b4b4b4;--faint:#949494;--accent:#73d5ef;--control:#555;--rule:#2a2a2a;--radius:20px;--gap:14px;font-family:Inter,Arial,sans-serif;font-size:14px;color:var(--text);background:var(--ground);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}a{color:inherit;text-underline-offset:4px}button,input,select,textarea{font:inherit}button,a,input,select,summary{touch-action:manipulation}button,select,summary{cursor:pointer}button{min-height:44px;border:1px solid var(--control);border-radius:999px;background:transparent;color:var(--text);padding:8px 16px;transition:background .15s ease,border-color .15s ease}button:hover{background:#242424;border-color:#888}button:active{background:#383838}button:disabled,input:disabled{cursor:not-allowed;opacity:.65}button.primary{color:#000;background:#fff;border-color:#fff;font-weight:600}button.primary:hover{background:#dcdcdc}button.full{width:100%;margin-top:10px}a:hover{text-decoration:underline}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,textarea:focus-visible{outline:3px solid var(--accent);outline-offset:4px}::selection{background:var(--accent);color:#000}.skip-link{position:absolute;top:-90px;left:16px;z-index:10;background:#fff;color:#000;padding:12px}.skip-link:focus{top:8px}
.shell{max-width:1240px;margin:auto;padding:0 28px}.site-header{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:18px;font-weight:600;white-space:nowrap}.brand svg{width:28px;height:28px}.site-header nav{display:flex;align-items:center;gap:28px}.site-header nav a{text-decoration:none;color:var(--muted);padding:12px 0}.site-header nav a[aria-current=page]{color:#fff}.site-header .local-note{font-size:12px;color:var(--muted);padding-left:24px;border-left:1px solid var(--rule)}.intro{display:flex;justify-content:space-between;align-items:flex-end;gap:28px;padding:30px 0 28px}.intro h1{font-size:28px;line-height:1.2;font-weight:600;letter-spacing:-.025em;margin:0 0 12px}.intro p{color:var(--muted);font-size:15px;line-height:1.6;margin:0;max-width:65ch}.text-link{white-space:nowrap;font-size:13px;text-decoration:none;padding:10px 0}.text-link span{margin-left:10px}.lab{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:var(--gap);align-items:start}/* 1184px = 890px working canvas + 14px gutter + 280px settings. */
h2,h3,p{margin-top:0}h2{font-size:16px;font-weight:600;line-height:1.4}h3{font-size:14px;font-weight:500}.quiet{color:var(--muted)}.small{font-size:12px;line-height:1.6}.scene-top{display:flex;justify-content:space-between;align-items:center;padding:15px 18px;background:var(--surface);border-radius:20px 20px 0 0;gap:12px}.scene-title{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.scene-title h2{margin:0}.scene-title .quiet{font-size:12px}.scene-top>.quiet{font-size:12px;white-space:nowrap}.signal{width:7px;height:7px;border-radius:50%;background:#fff;display:inline-block}.arenas{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap);background:var(--surface);padding:0 14px 14px;border-radius:0 0 20px 20px}.arena{margin:0;background:#171717;border-radius:12px;overflow:hidden;min-width:0}.arena.primary-view{grid-column:1/-1}.arena figcaption{padding:12px 15px;display:flex;align-items:center;justify-content:space-between;font-size:13px;gap:8px}.arena figcaption>span:last-child{color:var(--muted);font-size:12px}.arena canvas{display:block;width:100%;height:auto;aspect-ratio:2/1}.primary-view canvas{max-height:310px;object-fit:contain}.canvas-caption{display:flex;gap:24px;align-items:center;padding:10px 18px 14px;color:var(--muted);font-size:12px;flex-wrap:wrap}.canvas-caption span{display:inline-flex;align-items:center;gap:6px}.player-dot{width:8px;height:8px;background:var(--accent);border-radius:50%;display:inline-block}.transport{display:flex;align-items:center;gap:8px;padding-top:18px;flex-wrap:wrap}.transport button{padding:8px 14px}.time{margin-left:auto;font-variant-numeric:tabular-nums;white-space:nowrap}.time output{font-weight:500}.time span{color:var(--faint)}.speed{display:flex;align-items:center;gap:5px;color:var(--muted);font-size:12px}.speed select{background:#171717;color:#fff;border:1px solid var(--control);border-radius:8px;padding:8px;min-height:44px}.scrubber-label{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;margin-top:22px;gap:16px}.scrubber-label span:last-child{color:var(--faint)}input[type=range]{width:100%;accent-color:#ddd;min-height:32px;margin:5px 0;cursor:pointer}#scrubber{accent-color:var(--accent)}.touch-controls{display:flex;align-items:center;gap:8px;padding:8px 0 18px}.touch-controls button{white-space:nowrap;padding:8px 14px;user-select:none}.touch-controls p{margin:0 0 0 8px;font-size:12px;line-height:1.6;color:var(--muted)}.finding{background:var(--surface);padding:22px;border-radius:var(--radius);display:flex;align-items:center;justify-content:space-between;gap:20px}.finding .quiet{font-size:12px}.finding h2{font-size:18px;margin:8px 0}.finding p{color:var(--muted);line-height:1.7;margin:0;max-width:65ch}.finding button{flex:none}.evidence{display:grid;grid-template-columns:1fr 1fr;gap:28px;padding:28px 0}.evidence p{font-size:13px;line-height:1.7}.evidence ol{padding:0;margin:0;list-style:none}.evidence li{display:flex;gap:16px;font-size:13px;line-height:1.6;padding:10px 0}.evidence li>span:first-child{white-space:nowrap;color:var(--faint);font-variant-numeric:tabular-nums;width:48px;flex:none}.comparison{margin:12px 0 18px}.comparison div{display:flex;justify-content:space-between;gap:16px;padding:10px 0;border-bottom:1px solid var(--rule);font-size:13px}.comparison dt{color:var(--muted)}.comparison dd{margin:0;text-align:right;font-variant-numeric:tabular-nums}
.settings{background:var(--surface);border-radius:var(--radius);padding:22px}.settings>h2{margin-bottom:6px}.settings>p.quiet{font-size:12px;line-height:1.6}.presets{display:flex;gap:6px;margin:18px 0 22px;flex-wrap:wrap}.presets button{font-size:12px;padding:6px 10px;min-height:36px}.presets button[aria-pressed=true]{background:#fff;color:#000;border-color:#fff}.settings>label{display:flex;justify-content:space-between;gap:8px;font-size:13px;margin-top:14px}.settings output{color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}.settings input[type=range]{margin:4px 0 8px}.netcode{border-top:1px solid var(--rule);margin-top:16px;padding-top:20px}.netcode h3{margin-bottom:16px}.netcode label{display:flex;justify-content:space-between;gap:12px;margin:16px 0;align-items:center}.netcode label span{font-size:13px}.netcode small{display:block;color:var(--muted);font-size:12px;line-height:1.6;margin-top:3px}.netcode input{width:20px;height:20px;accent-color:#fff;flex:none}.settings input[type=number]{margin:10px 0 0;background:#222;border:1px solid var(--control);color:#fff;border-radius:8px;padding:10px 12px;width:100%;min-height:44px}.settings .small{margin-top:10px}.model{border-top:1px solid var(--rule);margin-top:20px;padding-top:18px;font-size:12px;line-height:1.7}.model summary{font-size:13px;padding:5px 0}.model p{margin-top:12px;color:var(--muted)}#status{min-height:18px;font-size:12px;line-height:1.6;margin:12px 0 0;color:var(--accent)}#share-fallback{margin-top:12px;font-size:12px}textarea{width:100%;background:#222;color:#fff;border:1px solid var(--control);padding:8px;overflow-wrap:anywhere}.learn-strip{border-top:1px solid var(--rule);padding:28px 0 36px}.lesson-links{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:22px}.lesson-links a{text-decoration:none}.lesson-links a>span{font-weight:500}.lesson-links p{color:var(--muted);font-size:13px;line-height:1.7;margin:8px 0 0}.site-footer{border-top:1px solid var(--rule);padding:25px 0;display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:12px;line-height:1.7}.site-footer nav{display:flex;gap:20px;flex-wrap:wrap}.site-footer a{text-decoration:none}.article{max-width:760px;margin:40px auto 64px;line-height:1.85;font-size:16px}.article h1{font-size:32px;line-height:1.25;letter-spacing:-.025em;font-weight:600}.article h2{font-size:22px;margin:36px 0 14px}.article h3{font-size:18px;margin-top:24px}.article p,.article li{color:#d0d0d0}.article .lede{font-size:19px;color:var(--muted)}.article ul{padding-left:24px}.article .try{display:inline-flex;padding:12px 20px;background:#fff;color:#000;border-radius:999px;text-decoration:none;margin:16px 0}.article code{background:#222;padding:2px 5px;border-radius:4px;font-size:14px}.article .lesson-list{padding:0;list-style:none}.lesson-list li{padding:20px 0;border-bottom:1px solid var(--rule)}.lesson-list a{font-size:19px}.lesson-list p{margin:6px 0 0;font-size:15px}.notice{padding:20px;background:#222;line-height:1.6}
.arena canvas{max-height:145px;object-fit:contain}.primary-view canvas{max-height:240px}.intro{padding-top:20px;padding-bottom:22px}
@media(min-width:1500px){.shell{max-width:1340px}}
@media(max-width:1000px){.shell{padding:0 22px}.lab{grid-template-columns:minmax(0,1fr) 250px}.settings{padding:18px}.intro{align-items:start}.intro .text-link{display:none}.scene-title .quiet{display:none}.scene-top{padding:14px}.touch-controls{flex-wrap:wrap}.touch-controls p{flex-basis:100%;margin:6px 0}.finding{flex-direction:column;align-items:start}.evidence{grid-template-columns:1fr;gap:24px}.transport .time{margin-left:0}.arena figcaption{flex-wrap:wrap}.site-header .local-note{display:none}}
@media(max-width:700px){.shell{padding:0 16px}.site-header{height:64px}.site-header nav{gap:16px}.brand{font-size:16px}.site-header nav a{font-size:13px}.intro{padding:24px 0}.intro h1{font-size:24px}.intro p{font-size:14px}.lab{grid-template-columns:1fr}.lab-main{min-width:0}.arenas{gap:8px;padding:0 8px 8px}.arena figcaption{padding:10px;font-size:12px}.arena figcaption>span:last-child{font-size:11px}.arena figcaption .quiet{display:none}.primary-view figcaption .quiet{display:inline}.canvas-caption{gap:12px;padding:10px;font-size:11px}.scene-top>.quiet{font-size:11px}.scene-top{padding:14px 10px}.transport{gap:8px}.transport button{font-size:12px;padding:8px 12px}.transport .time{margin-left:auto}.speed{margin-left:0}.scrubber-label span:last-child{display:none}.touch-controls p{font-size:12px}.settings{padding:22px}.settings>h2{font-size:18px}.presets button{min-height:44px;padding:8px 14px}.settings>label{font-size:14px}.netcode label{min-height:44px}.netcode label span{font-size:14px}.lesson-links{grid-template-columns:1fr;gap:24px}.site-footer{flex-direction:column}.site-footer nav{gap:18px}.article{margin:28px auto 44px;font-size:16px}.article h1{font-size:28px}.article .lede{font-size:17px}.learn-strip{margin-top:28px}.evidence{padding-bottom:0}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

.scene-top + .transport{padding:12px 0 14px}.arenas{border-radius:20px}.scene-top{border-radius:20px}