html, body { margin: 0; height: 100%; overflow: hidden; background: #171717; color: white; }
body { display: flex; flex-direction: column; align-items: center; justify-content: center; }
#racer { flex-shrink: 0; width: min(100vw, calc((100dvh - 105px) * 4 / 3)); height: auto; aspect-ratio: 4 / 3; margin: 0; border: 0; }
#canvas { width: 100%; height: 100%; }
#hud { width: 100%; font-size: clamp(8px, 1.5vw, 13px); }
#music { margin: 6px 0; height: 32px; max-width: 90vw; }
#driving-help { margin: 8px 0 0; font-size: 12px; }