/* ============================================
   首页子组件样式 - 热门活动
   ============================================ */
.index-activities { padding: var(--space-3xl) 0; background: var(--color-bg-alt); }
.index-activities-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-lg);
}
.index-activity-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 220px;
  display: flex;
  align-items: flex-end;
  text-decoration: none;
  color: #fff;
  transition: transform var(--transition-normal);
}
.index-activity-card:hover { transform: translateY(-4px); }
.index-activity-card.featured { min-height: 280px; }
.index-activity-bg {
  position: absolute;
  inset: 0;
  transition: transform var(--transition-slow);
}
.index-activity-card:hover .index-activity-bg { transform: scale(1.05); }
.index-activity-content {
  position: relative;
  z-index: 1;
  padding: var(--space-lg);
  width: 100%;
  background: linear-gradient(transparent, rgba(0,0,0,0.4));
}
.index-activity-content h3 {
  font-size: var(--font-lg);
  color: #fff;
  margin: var(--space-sm) 0;
}
.index-activity-content p {
  font-size: var(--font-sm);
  opacity: 0.9;
  margin-bottom: var(--space-md);
}

@media (max-width: 768px) {
  .index-activities-grid { grid-template-columns: 1fr; }
  .index-activity-card.featured { min-height: 200px; }
}