:root{color:#f4efe6;background:#090b12;font-family:Inter,ui-sans-serif,system-ui,sans-serif;font-synthesis:none}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:radial-gradient(circle at 15% 20%,rgba(91,68,145,.24),transparent 28rem),radial-gradient(circle at 85% 80%,rgba(39,134,130,.16),transparent 30rem),#090b12}.shell{width:min(1180px,calc(100% - 32px));margin:0 auto;padding:30px 0}.masthead{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:16px}.masthead h1{margin:2px 0 0;font-family:Georgia,Times New Roman,serif;font-size:clamp(2.4rem,6vw,4.8rem);font-weight:500;letter-spacing:-.06em;line-height:.9}.masthead p{max-width:420px;margin:0;color:#aeb6c8;text-align:right}.eyebrow{color:#78dcca;font-size:.72rem;font-weight:800;letter-spacing:.18em}#game{overflow:hidden;width:100%;aspect-ratio:16 / 9;border:1px solid rgba(255,255,255,.12);border-radius:18px;background:#111522;box-shadow:0 28px 80px #0000007a}#game canvas{display:block}footer{display:flex;flex-wrap:wrap;gap:10px 22px;padding:14px 4px 0;color:#929bad;font-size:.82rem}footer span{display:inline-flex;align-items:center;gap:5px}#run-status{display:block;margin-top:10px;color:#768096;font-size:.76rem}#lab-controls,#navigation-controls{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}#lab-controls[hidden],#navigation-controls[hidden]{display:none}#lab-controls button,#navigation-controls button{padding:8px 12px;border:1px solid #594d7a;border-radius:8px;color:#dcd2f5;background:#171426;cursor:pointer}#navigation-lab{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,1fr);gap:24px;margin-top:12px;padding:18px;border:1px solid rgba(120,220,202,.28);border-radius:12px;background:#0f1821e0}#navigation-lab[hidden]{display:none}#navigation-lab h2{margin:4px 0 6px;font-size:1.1rem}#navigation-lab p,#navigation-lab ol{margin:0;color:#aeb6c8;font-size:.82rem}#navigation-lab ol{columns:2;padding-left:22px}#navigation-lab li{break-inside:avoid;margin-bottom:5px}#navigation-live{display:block;margin-top:12px;white-space:pre-line;color:#78dcca;font:.76rem/1.5 ui-monospace,SFMono-Regular,Consolas,monospace}#navigation-validation{display:block;margin-top:10px;padding:8px;border-left:3px solid #78dcca;white-space:pre-line;color:#c8ff72;background:#040c12b8;font:.74rem/1.45 ui-monospace,SFMono-Regular,Consolas,monospace}.lab-switcher{display:flex;flex-wrap:wrap;gap:8px;padding-top:10px}.lab-switcher a{padding:5px 8px;border:1px solid #365d62;border-radius:6px;color:#78dcca;text-decoration:none}kbd{min-width:24px;padding:3px 7px;border:1px solid #3a4253;border-bottom-width:2px;border-radius:6px;color:#e6e9ef;background:#181d29;font:inherit;text-align:center}@media(max-width:720px){.masthead{align-items:start;flex-direction:column}.masthead p{text-align:left}.shell{width:min(100% - 16px,1180px);padding-top:18px}#navigation-lab{grid-template-columns:1fr}#navigation-lab ol{columns:1}}