* { margin: 0; padding: 0; box-sizing: border-box; }
    body { background: #000; display: flex; justify-content: center; align-items: center; height: 100vh; overflow: hidden; }
    canvas { display: block; cursor: pointer; touch-action: none; }
/* Accessibility: honor prefers-reduced-motion — neutralize animations,
   transitions, and motion effects (pulse, shake, drop, blink, glows). */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}