:root{color-scheme:dark;--bg:#0b1420;--panel:#132332;--text:#e7eff5;--muted:#a6bbca;--line:#304757;--mint:#67e8c3;--gold:#ffc477}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 system-ui,sans-serif}a{color:var(--mint)}header{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:22px 5%;border-bottom:1px solid var(--line);flex-wrap:wrap}header a{text-decoration:none;font-weight:700}header span{font-weight:400;color:var(--muted)}main{max-width:1160px;margin:auto;padding:40px 24px}h1{font-size:clamp(28px,4vw,46px);line-height:1.2;max-width:850px;margin:10px 0}h2{font-size:clamp(20px,2.5vw,27px);line-height:1.4;margin:8px 0 20px}h3{font-size:18px;margin:0}p{margin:10px 0}.intro{margin-bottom:30px}.eyebrow,.badge{font-size:12px;letter-spacing:.12em;color:var(--mint)}button,.file{font:inherit;border:1px solid var(--line);border-radius:8px;padding:10px 15px;background:var(--panel);color:var(--text);cursor:pointer}button:hover,.file:hover{border-color:var(--mint)}button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--gold);outline-offset:3px}.primary{background:var(--mint);color:#08251f;font-weight:700}button:disabled{opacity:.4;cursor:default}.actions{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}.file{position:relative;overflow:hidden}.file input{position:absolute;inset:0;opacity:0;width:100%;cursor:pointer}.file:focus-within{outline:3px solid var(--gold)}details{margin:22px 0;padding:18px;background:var(--panel);border:1px solid var(--line);border-radius:10px}summary{cursor:pointer;font-weight:600}.fields{display:grid;grid-template-columns:1fr 1fr;gap:18px}form{margin-top:20px}form label{display:block;margin-bottom:15px}input,textarea{display:block;width:100%;padding:10px;margin-top:6px;font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--line);border-radius:6px}textarea{min-height:75px;resize:vertical}.muted,footer{color:var(--muted);font-size:14px}.scene-heading{display:flex;align-items:center;gap:20px;justify-content:space-between}.clock{font-variant-numeric:tabular-nums;white-space:nowrap;background:var(--panel);padding:8px 16px;border-radius:24px}.worlds{display:grid;grid-template-columns:1fr 1fr;gap:20px}.worlds article{min-width:0;border:1px solid var(--line);background:var(--panel);border-radius:14px;overflow:hidden}.world-title{padding:16px 20px;display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between}.world-result{font-size:13px;color:var(--muted)}svg{display:block;width:100%;height:auto}svg text{font-family:inherit;fill:var(--text);font-size:15px}svg .axis-label{font-size:12px;fill:var(--muted)}.packet{display:flex;gap:10px;flex-wrap:wrap;justify-content:space-between;padding:14px 20px;border-top:1px solid var(--line)}.packet span{color:var(--muted)}.packet strong{font-size:15px;font-variant-numeric:tabular-nums}.comparison{display:flex;justify-content:center;align-items:center;gap:15px;padding:15px}.equality{font-size:30px;color:var(--mint)}.playback{display:flex;gap:10px;align-items:center;flex-wrap:wrap;justify-content:center}.prediction{padding:26px 0}.prediction p{color:var(--muted);margin:16px 0}.prediction button[aria-pressed=true]{border-color:var(--mint);box-shadow:inset 0 -3px var(--mint)}.solution{padding:20px;border-left:3px solid var(--mint);background:var(--panel)}[hidden]{display:none!important}.solution details{border:0;padding-left:0}#error{color:#ffb4ab}#status:empty,#error:empty,#dirty:empty{display:none}.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%;margin:15px 0}td,th{text-align:left;border-bottom:1px solid var(--line);padding:8px}footer{border-top:1px solid var(--line);margin-top:40px;padding-top:20px}#author-explanation{white-space:pre-wrap;overflow-wrap:anywhere}@media(max-width:700px){main{padding:24px 16px}.worlds,.fields{grid-template-columns:1fr}.scene-heading{align-items:start}.clock{padding:5px 10px}.world-title{padding:12px 16px}.actions button{flex:1 1 160px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}}