.viewer-stage { perspective: 1100px; }
#resultCanvas {
  animation: affine-review 9s ease-in-out infinite;
  transform-style: preserve-3d;
  box-shadow: 0 22px 55px #0008;
}
@keyframes affine-review {
  0%, 100% { transform: rotateX(-2deg) rotateY(-7deg); }
  50% { transform: rotateX(3deg) rotateY(7deg) translateZ(22px); }
}
@media (prefers-reduced-motion: reduce) {
  #resultCanvas { animation: none; }
}