/* 展区标题 */
.exhibition-section-title {
  text-align: center; padding: 50px 0 30px;
}
.exhibition-section-title h2 {
  font-size: 32px; font-weight: 700; color: var(--text-main);
}

/* 筛选标签 */
.filter-tabs {
  max-width: var(--max-width); margin: 0 auto; padding: 40px 0 0;
  display: flex; gap: 12px; justify-content: center; flex-wrap: wrap;
}
@media (max-width: 1400px) {
  .filter-tabs, .exhibition-list { padding-left: 40px; padding-right: 40px; }
}
.filter-tab {
  padding: 8px 24px; border: 1px solid #ddd; border-radius: 24px;
  font-size: 14px; cursor: pointer; background: #fff; color: var(--text-main);
  transition: all 0.3s;
}
.filter-tab:hover, .filter-tab.active {
  background: var(--primary); color: #fff; border-color: var(--primary);
}

/* 展会项目列表 */
.exhibition-list {
  max-width: var(--max-width); margin: 0 auto; padding: 40px 0 80px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.exhibition-card {
  border-radius: 12px; overflow: hidden; border: 1px solid #eee;
  transition: all 0.3s; background: #fff;
  display: flex; flex-direction: column;
}
.exhibition-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.08); }
.exhibition-card img { width: 100%; height: 220px; object-fit: cover; }
.exhibition-card .card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.exhibition-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 12px; }
.exhibition-card p { font-size: 14px; color: var(--text-desc); line-height: 1.6; margin-bottom: 16px; flex: 1; }
.exhibition-tag {
  display: inline-block; padding: 4px 14px; background: var(--primary-light);
  color: var(--primary); border-radius: 12px; font-size: 13px; font-weight: 500;
  margin-top: auto; align-self: flex-start;
}

/* 更多展会题材 */
.more-topics { padding: 80px 0; background: var(--primary-light); }
.topics-grid {
  max-width: var(--max-width); margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.topic-card {
  background: #fff; border-radius: 12px; padding: 36px 24px;
  text-align: center; border: 1px solid #eee; transition: all 0.3s;
}
.topic-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.08); }
.topic-icon { width: 56px; height: 56px; margin: 0 auto 16px; }
.topic-icon img { width: 100%; height: 100%; }
.topic-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.topic-card p { font-size: 14px; color: var(--text-desc); }

@media (max-width: 992px) {
  .exhibition-list { grid-template-columns: repeat(2, 1fr); }
  .topics-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .exhibition-list { grid-template-columns: 1fr; }
  .topics-grid { grid-template-columns: 1fr 1fr; }
  .filter-tabs { padding: 30px 16px 0; }
}