:root{color:#1a1a1a;background:#f4f1ea;font-family:Georgia,Times New Roman,serif}body{margin:0;min-height:100vh;display:grid;place-items:center}main{width:min(44rem,calc(100vw - 2rem));display:grid;gap:.75rem;padding:1.5rem 0}h1{margin:0;font-size:1.8rem;font-weight:400}.tick-line,.meta{margin:0;font-variant-numeric:tabular-nums}.tick-line{font-size:1.25rem}.buttons{display:flex;gap:.75rem}button{font:inherit;padding:.4rem .9rem;cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}.sound-controls{display:grid;gap:.45rem}.sound-controls label{display:grid;grid-template-columns:6.5rem 1fr;align-items:center;gap:.5rem}.sound-controls select,.sound-controls input[type=range]{font:inherit;padding:.25rem .4rem}.sound-controls .volume{grid-template-columns:8.5rem 1fr 3rem}.lead{margin:0;line-height:1.4}.primary-actions button{min-width:6.5rem}.how-to{width:min(32rem,calc(100vw - 2rem));border:1px solid #d8d2c6;padding:1rem 1.2rem}.how-to h2{margin:0 0 .6rem;font-size:1.2rem;font-weight:400}.how-to ol{margin:0 0 1rem;padding-left:1.2rem}details{border-top:1px solid #d8d2c6;padding-top:.6rem}details summary{cursor:pointer}.mode{margin:0;padding:.5rem .75rem;border:1px solid #d8d2c6;display:flex;gap:1rem}.mode legend{padding:0 .35rem}.hint{margin:0;font-size:.9rem;opacity:.75}.camera{display:grid;gap:.5rem;padding-top:.5rem;border-top:1px solid #d8d2c6}.camera h2{margin:0;font-size:1.1rem;font-weight:400}.camera-stage{position:relative;width:100%;aspect-ratio:4 / 3;background:#111;overflow:hidden}.camera-stage video{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}.camera-stage canvas{display:block;width:100%;height:100%;object-fit:contain}.track-credit{margin:.45rem 0 0;color:#5c564c}