.card-3d {
  transform-style: preserve-3d;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}
@media (hover: hover) and (min-width: 768px) {
  .card-3d:hover {
    transform: perspective(800px) rotateX(2deg) rotateY(-2deg) translateY(-4px);
    box-shadow: 0 16px 40px rgba(74, 64, 57, 0.12);
  }
}
@media (max-width: 767px) {
  .card-3d:hover { transform: none; }
}