/* Video occupies only the existing screen aperture; the housing never moves. */
[data-demo-screen] > .game-demo-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  background: #141617;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease;
}
[data-demo-playing] [data-demo-screen] > .game-demo-video { opacity: 1; }
@media (prefers-reduced-motion: reduce) {
  [data-demo-screen] > .game-demo-video { display: none; transition: none; }
}