* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 'Noto Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      line-height: 1.6;
      background: #f5f7fa;
      color: #1e2b3c;
      -webkit-font-smoothing: antialiased;
    }
    /* 独立内容容器——与外部头部/底部完全隔离，无root变量依赖 */
    .xn-coldchain-wrapper {
      width: 100%;
      max-width: 1280px;
      margin: 0 auto;
      background: #ffffff;
      box-shadow: 0 4px 24px rgba(0, 20, 40, 0.08);
      border-radius: 0;
      overflow: hidden;
    }
    /* 面包屑导航 */
    .xn-breadcrumb {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      padding: 1.2rem 2rem 0.6rem 2rem;
      font-size: 0.9rem;
      color: #4a5c6c;
      background: transparent;
      letter-spacing: 0.3px;
      margin: 0 auto;
      width: 100%;
  max-width: 1280px;
    }
    .xn-breadcrumb a {
      color: #2c4b6b;
      text-decoration: none;
      border-bottom: 1px solid transparent;
      transition: border-color 0.2s;
    }
    .xn-breadcrumb a:hover {
      border-bottom: 1px solid #0066b3;
      color: #003b6f;
    }
    .xn-breadcrumb span {
      margin: 0 0.5rem;
      color: #8899aa;
    }
    .xn-breadcrumb .xn-current-location {
      color: #0b2b44;
      font-weight: 600;
      border-bottom: none;
    }

    /* 栏目缩略图/Banner容器——任意比例图片完整显示，不裁剪 */
    .xn-hero-visual {
      width: 100%;
      background: #eef3f9;
      margin: 0.5rem 0 1.8rem 0;
      padding: 0 2rem;
      box-sizing: border-box;
    }
    .xn-hero-img-holder {
      width: 100%;
      aspect-ratio: 16 / 7;
      background: #d9e2ec;
      border-radius: 8px;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
      background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 500" width="100%" height="100%"><rect width="1200" height="500" fill="%232c4b6b"/><text x="600" y="260" font-family="system-ui,sans-serif" font-size="42" font-weight="300" fill="%23ffffff" text-anchor="middle" opacity="0.9">冷链物流园区 · 冷库整体规划</text><text x="600" y="320" font-family="system-ui,sans-serif" font-size="24" fill="%23bdd3e8" text-anchor="middle" opacity="0.8">百平—千平—万平 冷库定制方案</text></svg>');
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
    }
    /* 用户替换图片指引：直接修改 .xn-hero-img-holder 的 background-image 或内部img标签 */
    .xn-hero-img-holder img {
      width: 100%;
      height: 100%;
      object-fit: contain;  /* 保证图片百分百显示齐全，无裁剪 */
      display: block;
    }

    /* 核心内容区 */
    .xn-main-content {
      padding: 0 2rem 2.5rem 2rem;
    }

    /* H1 核心标题 */
    .xn-primary-heading {
      font-size: 2.2rem;
      font-weight: 600;
      color: #0c2e4e;
      letter-spacing: 0.5px;
      margin: 0.8rem 0 1rem 0;
      line-height: 1.4;
      border-left: 5px solid #006bb3;
      padding-left: 1.5rem;
    }
    .xn-sub-headline {
      font-size: 1.1rem;
      color: #2e495e;
      margin-bottom: 2.2rem;
      font-weight: 400;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      flex-wrap: wrap;
      background: #f0f5fc;
      padding: 0.9rem 1.5rem;
      border-radius: 6px;
    }

    /* 痛点/服务对象网格 */
    .xn-grid-duo {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2rem;
      margin: 2.2rem 0 2rem 0;
    }
    @media (max-width: 700px) {
      .xn-grid-duo {
        grid-template-columns: 1fr;
      }
    }
    .xn-card-ice {
      background: #f8fafd;
      border: 1px solid #e2eaf2;
      border-radius: 12px;
      padding: 1.8rem 1.5rem;
      box-shadow: 0 2px 10px rgba(0,0,0,0.02);
    }
    .xn-card-ice h2 {
      font-size: 1.5rem;
      font-weight: 600;
      color: #103a5c;
      margin-bottom: 1.4rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      border-bottom: 2px solid #cdddec;
      padding-bottom: 0.7rem;
    }
    .xn-pain-list {
      list-style: none;
    }
    .xn-pain-list li {
      margin-bottom: 1rem;
      padding-left: 1.8rem;
      position: relative;
      font-size: 1rem;
      color: #1e3142;
    }
    .xn-pain-list li::before {
      content: "❄️";
      position: absolute;
      left: 0;
      top: 0;
      font-size: 1rem;
      color: #2b5f8a;
    }
    .xn-service-scope {
      display: flex;
      flex-wrap: wrap;
      gap: 0.8rem;
      margin-top: 1.2rem;
    }
    .xn-scope-badge {
      background: white;
      border: 1px solid #b8cee4;
      padding: 0.5rem 1.2rem;
      border-radius: 30px;
      font-size: 0.9rem;
      color: #0b2f4a;
      font-weight: 500;
    }

    /* 核心优势——参数透明区 */
    .xn-advantage-section {
      margin: 2.5rem 0 2rem 0;
    }
    .xn-section-title {
      font-size: 1.7rem;
      font-weight: 600;
      color: #0a3149;
      margin-bottom: 1.8rem;
      display: flex;
      align-items: center;
      gap: 0.8rem;
    }
    .xn-param-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 1.5rem;
      margin: 1.8rem 0;
    }
    .xn-param-item {
      background: #ffffff;
      border: 1px solid #dce5f0;
      border-radius: 14px;
      padding: 1.6rem 1.2rem;
      text-align: center;
      box-shadow: 0 6px 18px rgba(0,32,64,0.04);
    }
    .xn-param-value {
      font-size: 2rem;
      font-weight: 700;
      color: #004b87;
      line-height: 1.2;
    }
    .xn-param-label {
      font-size: 0.9rem;
      color: #3e5468;
      margin-top: 0.4rem;
      font-weight: 500;
    }
    .xn-transparent-note {
      background: #fff9e6;
      border-left: 4px solid #e6a700;
      padding: 1rem 1.4rem;
      margin: 1.5rem 0 2rem;
      font-size: 0.95rem;
      border-radius: 0 8px 8px 0;
      color: #2d3e50;
    }

    /* 资质与认证 */
    .xn-certificates {
      display: flex;
      flex-wrap: wrap;
      gap: 1.2rem;
      align-items: center;
      margin: 1.8rem 0 2.2rem;
      background: #f2f6fc;
      padding: 1.5rem;
      border-radius: 16px;
    }
    .xn-cert-icon {
      background: white;
      border-radius: 30px;
      padding: 0.4rem 1.2rem;
      font-weight: 600;
      font-size: 0.85rem;
      color: #003056;
      border: 1px solid #b3cee6;
      letter-spacing: 0.3px;
    }

    /* 服务流程 */
    .xn-flow-steps {
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      margin: 2rem 0 2.5rem;
      gap: 1rem;
    }
    .xn-step {
      flex: 1 1 150px;
      text-align: center;
      background: #f9fcff;
      padding: 1.4rem 0.8rem;
      border-radius: 12px;
      border: 1px solid #d9e6f5;
    }
    .xn-step-number {
      font-weight: 700;
      font-size: 1.8rem;
      color: #0066b3;
    }

    /* 报价参考区域 */
    .xn-quotation-ref {
      background: #f3f7fd;
      padding: 1.8rem;
      border-radius: 18px;
      margin: 2rem 0 2.2rem;
    }
    .xn-price-range {
      font-weight: 700;
      color: #002f54;
    }

    /* 配套品牌说明 */
    .xn-partner-note {
      font-size: 0.9rem;
      color: #3f5567;
      margin-top: 1.5rem;
      font-style: normal;
      background: #fafafa;
      padding: 0.8rem 1.2rem;
      border-radius: 30px;
      display: inline-block;
    }

    hr {
      border: 0.5px solid #d0dbe8;
      margin: 2rem 0 1rem;
    }

    /* 响应式微调 */
    @media (max-width: 600px) {
      .xn-primary-heading {
        font-size: 1.8rem;
      }
      .xn-main-content {
        padding: 0 1.2rem 2rem;
      }
      .xn-hero-visual {
        padding: 0 1rem;
      }
    }