:root {
  color-scheme:dark;
  --background:#0b1623;
  --surface:#101d2c;
  --text:#edf5fd;
  --muted:#a2b3c4;
  --border:#2a3b4e;
  --water:#79b7ef;
  --ice:#73d5f4;
  --silver:#eabf65;
  --iodide:#b9a2fa;
  --oxygen:#ff6d65;
  --hydrogen:#edf7ff;
  --highlight:#d1edfa;
  font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:#08121e;
  color:var(--text);
  font-size:16px;
  line-height:1.5;
}
*{box-sizing:border-box}
body{margin:0;min-width:320px;background:radial-gradient(ellipse at 75% 0%,#142d42 0%,transparent 54%),#08121e}
button,input,select{font:inherit}
button,select{cursor:pointer}
button{color:var(--text);border:1px solid var(--border);background:#142537}
button:hover{background:#1d354b;border-color:#4d6881}
button:focus-visible,select:focus-visible,a:focus-visible,canvas:focus-visible{outline:2px solid var(--ice);outline-offset:4px}
a{color:#99dafa;text-underline-offset:4px}
button{min-height:44px;border-radius:10px;padding:8px 14px}
.page-header{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:22px 36px;border-bottom:1px solid #233448;max-width:1720px;margin:auto}
.brand{display:flex;align-items:center;gap:15px}
.brand-symbol{display:grid;place-items:center;width:52px;height:52px;color:var(--silver);border:1px solid #655438;border-radius:14px;font-size:1.25rem;font-weight:600;background:#1e221f}
h1{font-size:1.35rem;margin:0;font-weight:600;letter-spacing:-.035em}
.brand p{margin:1px 0 0;color:var(--muted);font-size:.8125rem}
.science-link{font-size:.875rem;color:#c0d0df;text-decoration:none;padding:10px 0}
.science-link span{padding-left:8px}
main{max-width:1720px;margin:0 auto;padding:26px 36px 16px}
.workspace{display:grid;grid-template-columns:266px minmax(0,1fr);gap:24px;align-items:start}
.control-panel{border:1px solid var(--border);border-radius:18px;padding:22px;background:linear-gradient(150deg,#132334,#0d1a29)}
.panel-title{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:6px}
.eyebrow{font-size:.75rem;letter-spacing:.12em;color:#b8d4e8;font-weight:600}
.quiet-label{font-size:.75rem;color:var(--muted)}
.parameter-block{padding:24px 0;border-bottom:1px solid #29394c}
.parameter-block label{display:block;font-size:.875rem;color:#d2dfeb}
.parameter-value{display:block;margin:7px 0 15px;font-size:1.85rem;font-weight:500;letter-spacing:-.04em;font-variant-numeric:tabular-nums}
input[type=range]{width:100%;display:block;margin:0;height:26px;accent-color:var(--ice);cursor:pointer}
.range-ends{display:flex;justify-content:space-between;color:var(--muted);font-size:.75rem;margin-top:3px}
.input-hint{font-size:.8125rem;color:var(--muted);margin:7px 0 0}
.label-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;gap:10px}
.label-row output{color:var(--ice);font-variant-numeric:tabular-nums}
.play-button{display:block;width:100%;margin-top:18px;background:#85d9ed;border-color:#85d9ed;color:#08232e;font-weight:600}
.play-button:hover{background:#a6e9f7;border-color:#a6e9f7}
.molecule-key{display:flex;align-items:center;gap:10px;margin-top:20px}
.molecule-example{width:89px;flex-shrink:0}
.molecule-example text{font-size:14px;font-weight:600;fill:#102335;text-anchor:middle;dominant-baseline:central}
.molecule-key strong{display:block;font-size:1rem}
.molecule-key span{display:block;font-size:.75rem;color:var(--muted)}
.model-brief{color:var(--muted);font-size:.8125rem;margin:16px 0 0}
.scene-section{min-width:0}
.scene-toolbar{display:flex;justify-content:space-between;align-items:center;gap:15px;flex-wrap:wrap;margin-bottom:16px}
select{font-size:.9375rem;color:var(--text);background:#102234;border:1px solid #355068;border-radius:10px;padding:10px 36px 10px 14px;min-height:44px;max-width:100%}
.camera-controls{display:flex;gap:7px;flex-wrap:wrap}
.camera-controls button{font-size:.875rem}
.camera-controls button:first-child,.camera-controls button:nth-child(2){width:44px;padding:6px;font-size:1.25rem}
.agi-panels{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.agi-panel{border:1px solid #2c4257;border-radius:18px;overflow:hidden;min-width:0;background:radial-gradient(ellipse at 50% 55%,#19354a30,transparent 65%),linear-gradient(145deg,#111f2f,#091522)}
.sample-heading{display:flex;gap:12px;align-items:center;padding:21px 20px 15px}
.sample-number{font-size:.75rem;color:#8098ad;width:27px;align-self:flex-start;margin-top:4px;letter-spacing:.08em}
h2{font-size:1.125rem;font-weight:500;margin:0}
.sample-count{font-size:.8125rem;color:var(--muted);font-variant-numeric:tabular-nums}
.sample-meter{height:3px;background:#162a3b;margin:0 20px}
.sample-meter>div{height:100%;background:var(--ice);width:0}
canvas{display:block;width:100%;touch-action:none;cursor:grab}
canvas:active{cursor:grabbing}
[data-view=droplets] canvas{cursor:default;touch-action:pan-y}
.sample-state{margin:0;padding:14px 20px 20px;font-size:.875rem;color:#c9e4f3;min-height:58px}
.scene-footer{padding:21px 2px 0}
.legend{display:flex;flex-wrap:wrap;gap:12px 21px;font-size:.8125rem;color:#c3d5e6}
.legend-item{display:inline-flex;align-items:center;gap:8px}
.mark{display:inline-block;flex-shrink:0;width:10px;height:10px;border-radius:50%}
.liquid-mark{background:var(--oxygen)}
.hydrogen-mark{background:var(--hydrogen);width:7px;height:7px}
.ice-mark{border-top:1.5px dashed var(--ice);width:18px;height:0;border-radius:0}
.silver-mark{background:var(--silver)}
.iodide-mark{background:var(--iodide)}
[data-view=droplets] .liquid-mark{background:transparent;border:1.5px solid var(--water)}
[data-view=droplets] .ice-mark{height:10px;width:10px;border:0;background:var(--ice);clip-path:polygon(25% 7%,75% 7%,100% 50%,75% 93%,25% 93%,0% 50%)}
.camera-hint{color:#a1b5c8;font-size:.8125rem;margin:18px 0 0}
.model-detail{font-size:.75rem;color:#a1b5c8;margin:8px 2px 0}
.palette{position:absolute;visibility:hidden;pointer-events:none}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.science-notes{max-width:1720px;margin:10px auto 0;padding:0 36px}
.model-notes{border-top:1px solid #2a3b4e;padding:17px 0}
.model-notes summary{cursor:pointer;color:#d3e2ef;font-size:.9375rem;min-height:28px}
.model-notes p{font-size:.9375rem;line-height:1.75;color:#b6c8d9;max-width:1040px}
.model-notes strong{color:#e1eef9;font-weight:500}
.page-footer{max-width:1720px;margin:auto;padding:23px 36px 30px;color:#98aebe;font-size:.75rem;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
@media(min-width:1500px){.workspace{grid-template-columns:286px minmax(0,1fr);gap:30px}}
@media(max-width:1080px){.workspace{grid-template-columns:230px minmax(0,1fr);gap:18px}.control-panel{padding:18px}.page-header{padding:20px 24px}main{padding:24px}.science-notes{padding:0 24px}.sample-heading{padding:18px 15px 14px}.sample-number{display:none}.sample-state{padding:13px 15px 18px}}
@media(max-width:850px){
  .workspace{grid-template-columns:1fr}
  .control-panel{display:grid;grid-template-columns:1fr 1fr;gap:0 22px}
  .panel-title{grid-column:1/-1;margin:0}
  .parameter-block{padding:15px 0}
  .parameter-value{font-size:1.55rem;margin:4px 0 8px}
  .time-block{grid-column:1/-1;display:grid;grid-template-columns:1fr auto;gap:4px 20px;border:0;padding-bottom:0}
  .time-block .label-row{grid-column:1;margin:0}
  .time-block input{grid-column:1}
  .time-block .input-hint{grid-column:1;margin:0}
  .time-block .play-button{grid-column:2;grid-row:1/4;margin:0;align-self:center;width:96px}
  .molecule-key{display:none!important}
  .model-brief{grid-column:1/-1;margin:14px 0 0}
}
@media(max-width:600px){
  .page-header{padding:16px;gap:10px}
  .brand-symbol{width:42px;height:42px;border-radius:12px;font-size:1.1rem}
  .brand{gap:10px}h1{font-size:1.15rem}.brand p{font-size:.75rem}
  .science-link{font-size:.75rem;max-width:88px}.science-link span{display:none}
  main{padding:16px}
  .control-panel{border-radius:14px;padding:16px;gap:0 16px}
  .panel-title .quiet-label{display:none}
  .parameter-block label{font-size:.875rem}
  .parameter-value{font-size:1.5rem}
  .input-hint{font-size:.75rem}
  .model-brief{display:none}
  .agi-panels{grid-template-columns:1fr;gap:15px}
  .scene-toolbar{gap:10px;align-items:flex-start}
  select{font-size:.875rem;padding-right:26px}
  .camera-controls{gap:5px}
  .camera-controls button{padding:7px 9px}
  .camera-controls button:first-child,.camera-controls button:nth-child(2){width:38px}
  .scene-footer{padding-top:16px}.legend{gap:10px 17px}
  .science-notes{padding:0 16px}.page-footer{padding:20px 16px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}