.strong-shadow {
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.strong-shadow:hover {
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.45);
  transform: translateY(-3px);
}