/* ========== 页面头部 ========== */
.page-hero {
  background: linear-gradient(180deg, #F0F5FF 0%, #FFFFFF 50%, #F8FAFC 100%);
  padding: 160px 0 80px;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -150px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.06), transparent 70%);
  border-radius: 50%;
}
.page-hero::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -100px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.04), transparent 70%);
  border-radius: 50%;
}
.page-hero-title {
  color: var(--dark);
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 16px;
}
.page-hero-desc {
  color: var(--gray);
  font-size: 1.1rem;
  max-width: 550px;
  margin: 0 auto;
}

/* ========== 筛选栏 ========== */
.filter-bar {
  display: flex;
  justify-content: center;
  margin-bottom: 10px;
}
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}
.filter-btn {
  background: transparent;
  border: 1px solid #cbd5e1;
  color: var(--gray);
  padding: 10px 24px;
  border-radius: 30px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}
.filter-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ========== 案例卡片 ========== */
.case-link {
  display: block;
  height: 100%;
  text-decoration: none;
  color: inherit;
}
.case-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 100%;
  transition: all 0.3s ease;
}
.case-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-light);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}
/* 点击查看详情提示 */
.case-view-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 14px;
  opacity: 0;
  transform: translateX(-6px);
  transition: all 0.3s ease;
}
.case-card:hover .case-view-more {
  opacity: 1;
  transform: translateX(0);
}
.case-img-wrap {
  position: relative;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #f1f5f9;
}
.case-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.case-card:hover .case-img {
  transform: scale(1.1);
}

.case-tag-top {
  position: absolute;
  top: 14px;
  right: 14px;
  background: rgba(37, 99, 235, 0.85);
  backdrop-filter: blur(8px);
  color: #fff;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
}
.case-body {
  padding: 22px;
}
.case-body h5 {
  color: var(--dark);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.case-body p {
  color: var(--gray);
  font-size: 0.875rem;
  line-height: 1.65;
  margin-bottom: 0;
}

/* ========== 统计文字 ========== */
.page-count {
  color: var(--gray);
  font-size: 0.95rem;
}
.page-count strong {
  color: var(--primary);
}

/* ========== 案例项过渡动画 ========== */
.case-item {
  transition: all 0.35s ease;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .page-hero {
    padding: 130px 0 50px;
  }
  .page-hero-title {
    font-size: 2rem;
  }
  .page-hero-desc {
    font-size: 1rem;
  }
  .filter-btn {
    padding: 8px 16px;
    font-size: 0.82rem;
  }
  .case-img-wrap {
    height: 140px;
  }
}