:root{--bg:#101416;--panel:#171d20;--inset:#0c1113;--text:#f1f2ee;--muted:#aeb8b9;--line:#354043;--accent:#eab975;--cyan:#64c6d1;--button:#263034;--shadow:0 18px 60px #0003;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color-scheme:dark}
:root[data-theme=light]{--bg:#f4f6f5;--panel:#fff;--inset:#eaf0f0;--text:#172124;--muted:#4e6269;--line:#bac7ca;--accent:#885512;--cyan:#146e85;--button:#e4ebec;--shadow:0 18px 60px #18343b0c;color-scheme:light}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-size:16px;line-height:1.6}a{color:inherit;text-underline-offset:4px}button,input,select,textarea{font:inherit;color:inherit}button,a,input,select,textarea{touch-action:manipulation}button{cursor:pointer;border:1px solid var(--line);background:var(--button);border-radius:7px;padding:9px 13px;min-height:44px;font-size:14px}button:hover{border-color:var(--accent)}button:disabled{opacity:.5;cursor:wait}button.primary{background:var(--accent);color:var(--bg);border-color:var(--accent)}button.secondary{background:transparent}.button-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.button-row>*{flex:1}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,canvas:focus-visible,textarea:focus-visible{outline:3px solid var(--cyan);outline-offset:4px}.skip{position:fixed;top:-100px;left:20px;z-index:10;background:var(--accent);color:var(--bg);padding:15px}.skip:focus{top:10px}header{padding:20px 4vw;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:13px;text-decoration:none;font-size:16px}.monogram{font-size:22px;letter-spacing:-1px;color:var(--accent);border:1px solid var(--line);padding:4px 10px}.brand small{display:block;font-size:10px;letter-spacing:1.8px;color:var(--muted)}.header-links{display:flex;align-items:center;gap:25px;font-size:14px}.header-links a{text-decoration:none}main{max-width:1560px;margin:auto;padding:30px 4vw 0}.intro{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:26px}.intro p{margin:8px 0 0;color:var(--muted)}.eyebrow{font-size:12px!important;letter-spacing:2px;line-height:1.5;color:var(--accent)!important;margin:0 0 12px!important;font-weight:500}h1{font-size:clamp(28px,3.1vw,44px);font-weight:500;line-height:1.16;letter-spacing:-1.4px;margin:0}h2{font-weight:500;font-size:22px;line-height:1.3;margin:0 0 16px}h3{font-weight:500;font-size:18px;line-height:1.4}.accent{color:var(--accent)}.lab-nav{display:flex;gap:3px;border-bottom:1px solid var(--line);margin-bottom:22px;overflow-x:auto;padding-bottom:0}.lab-nav button{flex-shrink:0;border:0;border-bottom:2px solid transparent;border-radius:0;background:transparent;color:var(--muted);padding:14px 17px}.lab-nav button span{font-size:11px;margin-right:7px;opacity:.6}.lab-nav button[aria-current=page]{border-bottom-color:var(--accent);color:var(--text)}.workspace{display:grid;grid-template-columns:280px minmax(0,1fr);gap:22px;align-items:start}.controls{border:1px solid var(--line);border-radius:10px;background:var(--panel);overflow:hidden}.panel-heading{padding:22px 22px 0}.panel-heading h2{font-size:21px}#control-body{padding:0 22px 22px}.field{margin:20px 0}.field>label{display:flex;justify-content:space-between;gap:10px;font-size:14px;margin-bottom:8px}.field output{color:var(--accent);font-variant-numeric:tabular-nums}select,input[type=text],textarea{width:100%;padding:10px;border:1px solid var(--line);background:var(--inset);border-radius:6px;font-size:14px}input[type=range]{width:100%;accent-color:var(--accent);height:26px;margin:0}input[type=file]{max-width:100%;font-size:12px}input::file-selector-button{background:var(--button);color:var(--text);border:1px solid var(--line);padding:9px;border-radius:4px}small,.small{font-size:12px;color:var(--muted);line-height:1.6}p.small{margin:8px 0}.control-divider{height:1px;background:var(--line);margin:20px 0}.wide{width:100%}.view-column{min-width:0}.stage{position:relative;height:420px;min-height:320px;background:var(--inset);border:1px solid var(--line);border-radius:10px;overflow:hidden;box-shadow:var(--shadow)}#scene{display:block;width:100%;height:100%;touch-action:none;cursor:grab}#scene:active{cursor:grabbing}.stage-top{position:absolute;top:17px;left:20px;right:20px;display:flex;justify-content:space-between;gap:10px;pointer-events:none;font-size:12px;z-index:1;color:var(--muted)}#method-badge{color:var(--accent)}.stage-bottom{position:absolute;bottom:12px;left:18px;right:12px;display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:11px;color:var(--muted);pointer-events:none}.stage-bottom div{display:flex;gap:4px;pointer-events:auto}.stage-bottom button{min-height:34px;padding:4px 9px;font-size:12px;background:var(--panel)}.legend{display:flex;justify-content:space-between;gap:15px;padding:12px 3px;color:var(--muted);font-size:12px}.legend-scale{display:flex;gap:9px;align-items:center;min-width:170px}.gradient{height:7px;flex:1;min-width:85px;border-radius:3px;background:linear-gradient(90deg,#298ba1,#83958d,#f1bb65)}.metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.metric{padding:16px 18px 16px 0}.metric:not(:first-child){border-left:1px solid var(--line);padding-left:20px}.metric span{display:block;font-size:12px;color:var(--muted)}.metric strong{display:block;font-size:22px;font-weight:400;font-variant-numeric:tabular-nums;margin-top:2px}.experiment-note{color:var(--muted);font-size:13px;line-height:1.6;margin:14px 0}.explanation{display:grid;grid-template-columns:280px minmax(0,1fr);gap:22px;border-top:1px solid var(--line);margin-top:32px;padding:26px 0}.explanation p{margin:0 0 12px;max-width:78ch;color:var(--muted)}.explanation details{border-top:1px solid var(--line);padding:12px 0}.explanation summary{cursor:pointer;font-size:14px;color:var(--text)}.explanation details p{font-size:14px;margin-top:12px}.reading{max-width:1050px;min-height:450px;margin:auto}.reading p{color:var(--muted)}.guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.guide-card,.note-card{border:1px solid var(--line);border-radius:8px;padding:24px;background:var(--panel)}.guide-card p,.guide-card li{font-size:15px}.guide-card.wide{grid-column:1/-1}.guide-card h2{margin-bottom:8px}.formula{font-family:ui-monospace,monospace;color:var(--accent)!important;overflow-wrap:anywhere;font-size:14px!important}.note-card{margin:15px 0}.note-card p{white-space:pre-wrap;overflow-wrap:anywhere}.note-card .button-row{justify-content:flex-start}.note-card button{flex:0 1 auto}footer{border-top:1px solid var(--line);padding:24px 0 30px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:var(--muted)}.status{font-size:14px;color:var(--accent);min-height:26px;margin:8px 0}dialog{max-width:520px;width:calc(100% - 32px);background:var(--panel);color:var(--text);border:1px solid var(--line);border-radius:12px;padding:26px}dialog::backdrop{background:#0009}dialog label{display:block;margin:15px 0 5px}dialog p{color:var(--muted);font-size:14px}#posterior-chart{width:100%;height:200px;margin-top:12px;overflow:visible}table{width:100%;border-collapse:collapse;font-size:14px}td,th{padding:9px;text-align:left;border-bottom:1px solid var(--line);font-weight:400}.table-scroll{overflow:auto}a{overflow-wrap:anywhere}[hidden]{display:none!important}
@media(min-width:1500px){.stage{height:480px}}@media(max-width:900px){main{padding:24px 20px 0}.workspace{grid-template-columns:240px minmax(0,1fr);gap:15px}.panel-heading{padding:18px 16px 0}#control-body{padding:0 16px 16px}.stage{height:400px}.stage-bottom>span{display:none}.stage-bottom{justify-content:flex-end}.explanation{grid-template-columns:240px minmax(0,1fr)}.intro>button{white-space:nowrap}.lab-nav button{padding:12px 13px}}
@media(max-width:640px){header{padding:14px 16px}.header-links{gap:10px}.header-links a{display:none}.brand small{font-size:9px;letter-spacing:1px}main{padding:22px 14px 0}.intro{align-items:flex-start;flex-direction:column;gap:14px;margin-bottom:15px}.intro p:not(.eyebrow){font-size:14px}.intro>button{padding:7px 12px;min-height:38px}.workspace{display:flex;flex-direction:column;gap:16px}.controls,.view-column{width:100%}.controls{order:2}.view-column{order:1}.stage{height:350px}.stage-top{left:12px;right:12px;font-size:11px}.legend{flex-wrap:wrap;gap:5px}.legend-scale{min-width:160px}.metric{padding:12px 8px 12px 0}.metric:not(:first-child){padding-left:10px}.metric strong{font-size:19px}.metric span{font-size:11px}.panel-heading h2{font-size:20px}#control-body{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}.field{margin:10px 0}.control-divider{grid-column:1/-1;margin:10px 0}#control-body>.small,#control-body>.wide,#control-body>.button-row,#control-body>details{grid-column:1/-1}#control-body>.field.full{grid-column:1/-1}.explanation{grid-template-columns:1fr;gap:0;margin-top:22px}.explanation h2{font-size:21px}.guide-grid{grid-template-columns:1fr}.guide-card{padding:20px}.guide-card.wide{grid-column:auto}footer{flex-direction:column;gap:7px}.lab-nav{margin-bottom:15px}.lab-nav button{font-size:13px}.lab-nav button span{display:none}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
/* Compact controls keep the experiment and its explanation together. */
.monogram{flex-shrink:0;white-space:nowrap}.header-links button{white-space:nowrap}.brand{min-width:0}.brand>span:last-child{min-width:0}
#control-body{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0 14px}.field{min-width:0;margin:12px 0}.control-divider,#control-body>.small,#control-body>.wide,#control-body>.button-row,#control-body>details,#control-body>.field.full{grid-column:1/-1}.field>label{flex-wrap:wrap;gap:0 5px}.field select{min-width:0}.stage{height:440px}
@media(max-width:900px) and (min-width:641px){.workspace{grid-template-columns:260px minmax(0,1fr)}.stage{height:410px}.explanation{grid-template-columns:260px minmax(0,1fr)}}
@media(max-width:640px){.lab-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;overflow:visible}.lab-nav button{padding:9px 8px;min-height:44px;text-align:left;font-size:13px}.stage{height:340px}.stage-top{flex-wrap:wrap}.brand small{font-size:8px}.header-links button{padding:8px;font-size:12px}.brand{font-size:14px;gap:9px}.monogram{font-size:20px;padding:4px 8px}.stage-bottom button{min-height:40px}.guide-card{padding:18px}}
.import-panel{font-size:14px;margin-bottom:14px}.import-panel summary{cursor:pointer}.import-panel .field{margin-top:12px}.import-panel p{font-size:12px;color:var(--muted)}