* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  background: #0a0a0a;
  color: #f0f0f0;
  overflow: hidden;
  min-height: 100vh;
  min-height: 100dvh;
  font-family: system-ui, sans-serif;
}
main { min-height: 100vh; min-height: 100dvh; display: grid; place-items: center; }
h1 { font-size: clamp(2rem, 10vw, 4rem); }
canvas { display: none; position: fixed; inset: 0; width: 100%; height: 100%; }
.canvas-ready canvas { display: block; }
.visually-hidden, .canvas-ready h1 {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0;
}
@media (hover: hover) and (pointer: fine) and (prefers-reduced-motion: no-preference) {
  .canvas-ready canvas { cursor: none; }
}