html, body { margin: 0; height: 100%; overflow: hidden; touch-action: manipulation; background: #0a0a0f; color: #cfd8dc; font-family: monospace; }
canvas { display: block; }
#splash, #old { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; text-align: center; padding: 1rem; }