/* 增强样式 */
body.ui-style-7 {
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.section {
  animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.card {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  transform: translateY(-4px);
}

.card-title a {
  color: #1a73e8;
  transition: color 0.2s;
}

.card-title a:hover {
  color: #0d47a1;
}

h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 1.2em;
  background: #1a73e8;
  margin-right: 0.75rem;
  vertical-align: middle;
}

.nav a {
  transition: all 0.2s;
  border-radius: 4px;
}

.nav a:hover {
  background: #f0f0f0;
  text-decoration: none;
}

@media (max-width: 768px) {
  .card-grid {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.3rem;
  }
}