html, body { margin: 0; height: 100%; overflow: hidden; background: #07061a; }
canvas {
  position: fixed; inset: 0; width: 100vw; height: 100vh; display: block;
  image-rendering: crisp-edges;
  image-rendering: pixelated;
}
/* The game draws its own crosshair and handles touch itself */
canvas.game { cursor: none; touch-action: none; }