body {
  background: #f8f9fa;
}
.nft-card {
  transition: transform 0.2s, box-shadow 0.2s;
  border-radius: 1rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.07);
}
.nft-card:hover {
  transform: translateY(-8px) scale(1.03);
  box-shadow: 0 8px 24px rgba(0,0,0,0.13);
}
.card-img-top {
  border-radius: 1rem 1rem 0 0;
  object-fit: cover;
  height: 260px;
}