html, body { margin: 0; height: 100%; background: #302c2e; overflow: hidden; }
body { touch-action: none; -webkit-user-select: none; user-select: none; -webkit-tap-highlight-color: transparent; }
#game { position: fixed; inset: 0; }
canvas { image-rendering: pixelated; image-rendering: crisp-edges; display: block; }