:root{color-scheme:dark;--bg:#0c1721;--panel:#142534;--line:#2b4053;--ink:#e9f2f8;--muted:#b0c2d2;--mint:#86ebc9;--gold:#f1d79c;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);line-height:1.6}.lab-header,main,footer{width:min(1180px,92%);margin:auto}.lab-header{display:flex;align-items:center;justify-content:space-between;padding:24px 0;border-bottom:1px solid var(--line)}.lab-header a{font-size:1.2rem;font-weight:850;letter-spacing:.12em;color:var(--mint);text-decoration:none}.lab-header span,.muted{color:var(--muted);font-size:.88rem}.lab-intro{max-width:820px;padding:42px 0 24px}.eyebrow{font-size:.76rem;letter-spacing:.2em;color:var(--gold);font-weight:750}h1{font-size:clamp(2.3rem,5vw,4rem);line-height:1.07;letter-spacing:-.045em;margin:12px 0 22px}h2{font-size:1.1rem;margin:0 0 6px}h3{font-size:1.05rem;margin-top:30px}.lead{font-size:1.18rem;max-width:710px;color:#d8e6ef}.lab-intro>p:last-child{color:var(--muted);max-width:760px}.lab-setup{border:1px solid var(--line);background:var(--panel);border-radius:14px;padding:22px 26px;display:grid;grid-template-columns:1.2fr 1fr;gap:24px;align-items:center}.lab-setup p{margin:0;color:var(--muted)}.consent{display:flex;gap:10px;align-items:flex-start;margin-bottom:12px}.consent input{margin-top:7px;accent-color:var(--mint)}button,select{font:inherit}button{border:1px solid var(--mint);border-radius:8px;background:var(--mint);color:#102b26;padding:9px 15px;font-weight:750;cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}.quiet{background:transparent;border-color:#6b8497;color:var(--ink);font-size:.85rem}button:focus-visible,a:focus-visible,select:focus-visible,textarea:focus-visible,pre:focus-visible,summary:focus-visible{outline:3px solid var(--gold);outline-offset:3px}#lab-status{min-height:30px;color:var(--gold);margin:18px 0}.lab-workspace{display:grid;grid-template-columns:1.18fr 1fr;gap:22px;align-items:start}.lab-code,.lab-results{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:22px;min-width:0}.panel-heading{display:flex;gap:14px;justify-content:space-between;align-items:center;margin-bottom:18px}.panel-heading h2{margin:0}select{display:block;width:100%;padding:10px 12px;background:#0d1c29;color:var(--ink);border:1px solid #6b8497;border-radius:8px;margin:6px 0 16px}.question{padding:12px 14px;border-left:3px solid var(--mint);background:#1a3140;min-height:73px}textarea{display:block;width:100%;height:26rem;resize:vertical;font:14px/1.65 ui-monospace,SFMono-Regular,Consolas,monospace;background:#101e2b;color:var(--ink);border:1px solid #6b8497;border-radius:8px;padding:16px;tab-size:4}#lab-editor{border:1px solid #6b8497;border-radius:8px;overflow:hidden}.actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:18px}#lab-output{white-space:pre-wrap;overflow-wrap:anywhere;min-height:280px;max-height:600px;overflow:auto;background:#0c1a26;border:1px solid var(--line);border-radius:9px;padding:18px;font:14px/1.7 ui-monospace,SFMono-Regular,Consolas,monospace;color:#c8f7e6}details{border-top:1px solid var(--line);padding-top:18px;color:var(--muted)}summary{cursor:pointer;color:var(--ink)}footer{padding:32px 0 40px;color:var(--muted);font-size:.85rem}.lab-isolation-frame{display:none}label{font-size:.9rem;font-weight:650}[hidden]{display:none!important}@media(max-width:800px){.lab-workspace,.lab-setup{grid-template-columns:1fr}.lab-intro{padding-top:28px}.lab-setup,.lab-code,.lab-results{padding:18px}.panel-heading{align-items:flex-start}#lab-output{min-height:200px}.lab-header{padding:18px 0}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}