/* ============================================================
   河南中天环保 - 案例详情页样式（主体部分）
   结构与选型指南详情页保持一致：左详情白卡，右相关案例列表
   依赖：styles/main.css（提供 CSS 变量与基础类）
   ============================================================ */

/* ---------- 面包屑 ---------- */
.case-detail .breadcrumb {
  background: #f2f6fb;
  padding: 16px 0;
  font-size: 14px;
  color: var(--c-text-sub, #5b6675);
}
.case-detail .breadcrumb .container {
  display: flex;
  align-items: center;
  gap: 8px;
}
.case-detail .breadcrumb a {
  color: var(--c-primary-light, #1e88e5);
  text-decoration: none;
  transition: color 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.case-detail .breadcrumb a:hover {
  color: var(--c-primary, #0e4d92);
}
.case-detail .breadcrumb .bc-sep {
  color: #c3ccd6;
}
.case-detail .breadcrumb .bc-current {
  color: #8a94a0;
}

/* ---------- 主体布局 ---------- */
.cd-section {
  padding: 56px 0 72px;
}
.cd-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 40px;
  align-items: start;
}

/* ---------- 左侧正文 ---------- */
.cd-article {
  background: var(--c-white, #fff);
  border: 1px solid var(--c-border, #e5eaf0);
  border-radius: 12px;
  padding: 40px 44px;
  overflow: hidden;
}

/* 案例头图 */
.cd-hero {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 28px;
  box-shadow: 0 10px 30px rgba(14, 77, 146, 0.12);
}
.cd-hero img {
  width: 100%;
  display: block;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.cd-location {
  position: absolute;
  top: 16px;
  left: 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: 13px;
  color: #fff;
  background: rgba(14, 77, 146, 0.85);
  border-radius: 20px;
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}

/* 标题区 */
.cd-head {
  padding-bottom: 24px;
  border-bottom: 1px solid var(--c-border, #e5eaf0);
  margin-bottom: 28px;
}
.cd-industry {
  display: inline-block;
  padding: 4px 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-primary-light, #1e88e5);
  background: #eaf3fb;
  border-radius: 6px;
  margin-bottom: 14px;
}
.cd-industry.is-green {
  color: var(--c-accent, #2e9e5c);
  background: #e8f5e9;
}
.cd-industry.mini {
  padding: 2px 8px;
  font-size: 12px;
  margin-bottom: 0;
}
.cd-title {
  font-size: 30px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--c-text, #1f2a37);
  margin: 0 0 14px;
}
.cd-summary {
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-text-sub, #5b6675);
  margin: 0;
}

/* 核心指标 */
.cd-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 38px;
}
.cd-metric {
  text-align: center;
  padding: 18px 12px;
  background: #f5f8fc;
  border: 1px solid var(--c-border, #e5eaf0);
  border-radius: 12px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.cd-metric:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(14, 77, 146, 0.1);
}
.cd-metric-value {
  display: block;
  font-family: var(--font-num, "DIN Alternate", "Helvetica Neue", Arial, sans-serif);
  font-size: 30px;
  font-weight: 700;
  color: var(--c-primary, #0e4d92);
  line-height: 1.2;
}
.cd-metric-unit {
  display: inline-block;
  font-size: 13px;
  color: var(--c-primary-light, #1e88e5);
  margin-left: 2px;
}
.cd-metric-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--c-text-sub, #5b6675);
}

/* 正文 */
.cd-body {
  color: var(--c-text, #1f2a37);
}
.cd-h2 {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 600;
  color: var(--c-primary, #0e4d92);
  margin: 34px 0 16px;
}
.cd-h2 > span {
  width: 4px;
  height: 22px;
  background: linear-gradient(180deg, #1e88e5, #2e9e5c);
  border-radius: 2px;
  flex-shrink: 0;
}
.cd-body p {
  font-size: 16px;
  line-height: 1.9;
  margin: 0 0 16px;
  color: #3a4554;
}
.cd-ul {
  margin: -4px 0 18px;
  padding-left: 22px;
}
.cd-ul li {
  font-size: 16px;
  line-height: 2;
  color: #3a4554;
  position: relative;
}
.cd-ul li::marker {
  color: var(--c-primary-light, #1e88e5);
}
.cd-quote {
  position: relative;
  margin: 26px 0;
  padding: 20px 24px 20px 56px;
  background: #eaf3fb;
  border-left: 4px solid var(--c-primary, #0e4d92);
  border-radius: 0 12px 12px 0;
}
.cd-quote svg {
  position: absolute;
  top: 18px;
  left: 18px;
  color: var(--c-primary, #0e4d92);
  opacity: 0.4;
}
.cd-quote p {
  font-size: 15px;
  line-height: 1.9;
  color: #3a4554;
  margin: 0;
  font-style: italic;
}

/* ---------- 右侧相关案例 ---------- */
.cd-side-card {
  background: var(--c-white, #fff);
  border: 1px solid var(--c-border, #e5eaf0);
  border-radius: 12px;
  padding: 24px;
  position: sticky;
  top: 96px;
}
.cd-side-title {
  font-size: 18px;
  color: var(--c-text, #1f2a37);
  font-weight: 600;
  margin: 0 0 16px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--c-border, #e5eaf0);
  position: relative;
}
.cd-side-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 42px;
  height: 2px;
  background: linear-gradient(90deg, var(--c-primary, #0e4d92), var(--c-accent, #2e9e5c));
}
.cd-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.cd-list-item {
  display: block;
  padding: 14px 0;
  border-bottom: 1px dashed var(--c-border, #e5eaf0);
  text-decoration: none;
  transition: padding-left 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.cd-list-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.cd-list-item:hover {
  padding-left: 8px;
}
.cd-list-cat {
  display: inline-block;
  font-size: 12px;
  color: var(--c-primary-light, #1e88e5);
  background: #eaf3fb;
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 6px;
}
.cd-list-item.is-green .cd-list-cat {
  color: var(--c-accent, #2e9e5c);
  background: #e8f5e9;
}
.cd-list-item.is-current .cd-list-cat {
  color: #fff;
  background: var(--c-primary, #0e4d92);
}
.cd-list-title {
  display: block;
  font-size: 14px;
  line-height: 1.5;
  color: var(--c-text, #1f2a37);
  font-weight: 500;
  margin-bottom: 6px;
}
.cd-list-item:hover .cd-list-title {
  color: var(--c-primary-light, #1e88e5);
}
.cd-list-place {
  font-size: 12px;
  color: var(--c-text-sub, #5b6675);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .cd-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .cd-side-card {
    position: static;
  }
  .cd-metrics {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  .cd-section {
    padding: 36px 0 56px;
  }
  .cd-article {
    padding: 28px 22px;
  }
  .cd-title {
    font-size: 24px;
  }
  .cd-summary {
    font-size: 15px;
  }
  .cd-metrics {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .cd-body p {
    font-size: 15px;
  }
  .cd-h2 {
    font-size: 19px;
  }
}