html, body { margin: 0; padding: 0; height: 100%; background: #06060a; overflow: hidden;
  display: flex; align-items: center; justify-content: center; font-family: Georgia, "Times New Roman", serif; }
canvas { background: #1a1426; max-width: 100vw; max-height: 100vh; aspect-ratio: 16 / 9; cursor: pointer;
  box-shadow: 0 0 60px #0008; }