html, body { margin: 0; height: 100%; background: #000; overflow: hidden; }
canvas { display: block; width: 100vw; height: 100vh; height: 100dvh; cursor: pointer; touch-action: manipulation; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
#safe { position: fixed; inset: 0; visibility: hidden; pointer-events: none;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left); }
noscript p { color: #706deb; font: 16px/1.4 ui-monospace, monospace; text-align: center; margin-top: 40vh; }