/* roulang page: index */
:root {
      --bg-dark: #0a0f1d;
      --bg-surface: #10182b;
      --bg-card: rgba(18, 28, 51, 0.72);
      --bg-card-hover: rgba(26, 40, 71, 0.88);
      --border-line: rgba(56, 189, 248, 0.18);
      --border-glow: rgba(56, 189, 248, 0.45);
      --text-main: #f1f5f9;
      --text-muted: #94a3b8;
      --text-dim: #64748b;
      --primary: #0284c7;
      --primary-light: #38bdf8;
      --accent: #0ea5e9;
      --accent-glow: 0 0 25px rgba(56, 189, 248, 0.45);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-w: 1200px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.68;
      font-size: 16px;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }

    .container {
      width: 100%;
      max-width: var(--container-w);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(10, 15, 29, 0.82);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-line);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }

    .brand-logo {
      font-size: 20px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #ffffff;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .brand-logo .dot {
      width: 10px;
      height: 10px;
      background: var(--primary-light);
      border-radius: 50%;
      box-shadow: 0 0 10px var(--primary-light);
    }

    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 8px;
    }

    .nav-item {
      position: relative;
    }

    .nav-link {
      display: block;
      padding: 10px 16px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }

    .nav-link:hover, .nav-item.active .nav-link {
      color: #ffffff;
      background: rgba(56, 189, 248, 0.08);
    }

    /* 下拉面板 */
    .dropdown-panel {
      position: absolute;
      top: 100%;
      left: 0;
      width: 260px;
      background: #0d1527;
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      box-shadow: 0 16px 36px rgba(0,0,0,0.5);
      padding: 12px;
      display: none;
      z-index: 110;
    }

    .nav-item:hover .dropdown-panel {
      display: block;
    }

    .dropdown-panel a {
      display: block;
      padding: 9px 14px;
      font-size: 14px;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }

    .dropdown-panel a:hover {
      background: rgba(56, 189, 248, 0.12);
      color: var(--primary-light);
    }

    .nav-cta-btn {
      padding: 9px 20px;
      background: linear-gradient(135deg, var(--primary) 0%, #0369a1 100%);
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      box-shadow: var(--accent-glow);
      border: 1px solid rgba(255, 255, 255, 0.15);
    }

    .nav-cta-btn:hover {
      box-shadow: 0 0 20px rgba(56, 189, 248, 0.7);
      transform: translateY(-1px);
    }

    /* 裂变首屏 Hero */
    .hero-section {
      position: relative;
      padding: 80px 0 100px;
      background-image: linear-gradient(to bottom, rgba(10, 15, 29, 0.85), rgba(10, 15, 29, 0.96)), url('/assets/images/3da18a93daae2771.jpg');
      background-size: cover;
      background-position: center;
      border-bottom: 1px solid var(--border-line);
      overflow: hidden;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }

    .hero-content h1 {
      font-size: 38px;
      line-height: 1.25;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 22px;
      letter-spacing: -0.5px;
    }

    .hero-desc {
      font-size: 16px;
      color: var(--text-muted);
      margin-bottom: 30px;
      line-height: 1.8;
    }

    .hero-meta-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 32px;
    }

    .badge-tag {
      display: inline-flex;
      align-items: center;
      padding: 6px 14px;
      background: rgba(56, 189, 248, 0.1);
      border: 1px solid rgba(56, 189, 248, 0.25);
      border-radius: 999px;
      font-size: 13px;
      color: var(--primary-light);
      font-weight: 500;
    }

    /* 裂变卡片组件 */
    .fission-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-lg);
      padding: 32px;
      backdrop-filter: blur(20px);
      box-shadow: 0 20px 40px rgba(0,0,0,0.35);
      position: relative;
    }

    .fission-header {
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding-bottom: 16px;
      margin-bottom: 20px;
    }

    .fission-title {
      font-size: 18px;
      font-weight: 700;
      color: #ffffff;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .fission-pill {
      font-size: 12px;
      padding: 3px 10px;
      background: #0284c7;
      color: #fff;
      border-radius: 999px;
    }

    .progress-bar-wrapper {
      margin: 20px 0;
    }

    .progress-labels {
      display: flex;
      justify-content: space-between;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }

    .progress-track {
      width: 100%;
      height: 10px;
      background: rgba(255,255,255,0.08);
      border-radius: 999px;
      overflow: hidden;
      border: 1px solid rgba(255,255,255,0.05);
    }

    .progress-fill {
      width: 82%;
      height: 100%;
      background: linear-gradient(90deg, #0284c7, #38bdf8);
      border-radius: 999px;
      box-shadow: 0 0 12px var(--primary-light);
    }

    .reward-item-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 12px 14px;
      background: rgba(255,255,255,0.03);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      border: 1px solid rgba(255,255,255,0.05);
    }

    .reward-desc {
      font-size: 13px;
      color: var(--text-main);
    }

    .fission-btn {
      width: 100%;
      padding: 14px;
      text-align: center;
      background: linear-gradient(135deg, #0284c7, #0ea5e9);
      color: #ffffff;
      font-weight: 700;
      font-size: 15px;
      border-radius: var(--radius-md);
      box-shadow: var(--accent-glow);
      display: inline-block;
      margin-top: 10px;
      border: none;
      cursor: pointer;
    }

    .fission-btn:hover {
      box-shadow: 0 0 25px rgba(56, 189, 248, 0.8);
      transform: translateY(-2px);
    }

    /* 通用Section */
    .content-section {
      padding: 84px 0;
      border-bottom: 1px solid rgba(255,255,255,0.05);
    }

    .section-alt {
      background-color: var(--bg-surface);
    }

    .section-head {
      margin-bottom: 48px;
      max-width: 780px;
    }

    .section-head.center {
      text-align: center;
      margin-left: auto;
      margin-right: auto;
    }

    .section-title {
      font-size: 28px;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 16px;
      letter-spacing: -0.3px;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* 资料目录组件 */
    .catalog-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .catalog-item {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      transition: all 0.3s ease;
      position: relative;
    }

    .catalog-item:hover {
      transform: translateY(-4px);
      border-color: var(--border-glow);
      background: var(--bg-card-hover);
      box-shadow: 0 12px 24px rgba(0,0,0,0.3);
    }

    .catalog-code {
      font-size: 12px;
      color: var(--primary-light);
      font-weight: 700;
      margin-bottom: 8px;
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    .catalog-name {
      font-size: 17px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 10px;
    }

    .catalog-summary {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 价值点 Bento 排版 */
    .bento-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .bento-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-lg);
      padding: 30px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .bento-card.wide {
      grid-column: span 2;
    }

    .bento-icon {
      width: 48px;
      height: 48px;
      background: rgba(56, 189, 248, 0.1);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      color: var(--primary-light);
      margin-bottom: 20px;
    }

    .bento-title {
      font-size: 20px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 12px;
    }

    .bento-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }

    .bento-card img {
      border-radius: var(--radius-md);
      margin-top: 10px;
      width: 100%;
      height: 190px;
    }

    /* 关键图表 / 数据指标对比 */
    .charts-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }

    .stat-list {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .stat-row {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      padding: 20px;
      border-radius: var(--radius-md);
    }

    .stat-label-wrap {
      display: flex;
      justify-content: space-between;
      margin-bottom: 8px;
      font-size: 14px;
    }

    .stat-val {
      color: var(--primary-light);
      font-weight: 700;
    }

    .stat-meter {
      height: 8px;
      background: rgba(255,255,255,0.06);
      border-radius: 999px;
      overflow: hidden;
    }

    .meter-active {
      height: 100%;
      background: linear-gradient(90deg, #0284c7, #38bdf8);
      border-radius: 999px;
    }

    /* 相关资源推荐区 */
    .resources-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .resource-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    .resource-thumb {
      height: 170px;
      overflow: hidden;
    }

    .resource-thumb img {
      width: 100%;
      height: 100%;
      transition: transform 0.4s ease;
    }

    .resource-card:hover .resource-thumb img {
      transform: scale(1.05);
    }

    .resource-body {
      padding: 22px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .resource-meta {
      font-size: 12px;
      color: var(--primary-light);
      margin-bottom: 8px;
      font-weight: 600;
    }

    .resource-title {
      font-size: 17px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 10px;
    }

    .resource-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
    }

    .resource-link {
      font-size: 13px;
      color: var(--primary-light);
      font-weight: 600;
      align-self: flex-start;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .resource-link:hover {
      text-decoration: underline;
    }

    /* 资讯列表 */
    .news-list-box {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-lg);
      padding: 10px 24px;
    }

    .news-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 20px 0;
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }

    .news-row:last-child {
      border-bottom: none;
    }

    .news-main-info {
      max-width: 820px;
    }

    .news-tag {
      font-size: 11px;
      background: rgba(56, 189, 248, 0.12);
      color: var(--primary-light);
      padding: 3px 8px;
      border-radius: 4px;
      margin-right: 12px;
    }

    .news-headline {
      font-size: 16px;
      font-weight: 600;
      color: #ffffff;
      display: inline;
    }

    .news-snippet {
      font-size: 13px;
      color: var(--text-dim);
      margin-top: 6px;
    }

    .news-time {
      font-size: 13px;
      color: var(--text-dim);
      white-space: nowrap;
    }

    /* 场景演示矩阵 */
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .scene-card {
      background: rgba(255,255,255,0.02);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: left;
    }

    .scene-title {
      font-size: 16px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .scene-title::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--primary-light);
    }

    .scene-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 参数速览 */
    .spec-table-wrap {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-lg);
      padding: 28px;
    }

    .spec-grid-layout {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px 28px;
    }

    .spec-cell {
      display: flex;
      justify-content: space-between;
      padding: 12px 16px;
      background: rgba(255,255,255,0.02);
      border-radius: var(--radius-sm);
      font-size: 14px;
    }

    .spec-key {
      color: var(--text-dim);
    }

    .spec-val {
      color: #ffffff;
      font-weight: 500;
    }

    /* 评价墙 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 24px;
    }

    .review-user {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 12px;
    }

    .review-avatar-name {
      font-size: 14px;
      font-weight: 600;
      color: #ffffff;
    }

    .review-score {
      font-size: 12px;
      color: #fbbf24;
    }

    .review-quote {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 领取表单转化区 */
    .form-section {
      background-image: linear-gradient(to bottom, rgba(10, 15, 29, 0.9), rgba(10, 15, 29, 0.98)), url('/assets/images/2d0d6ba70fb56bae.webp');
      background-size: cover;
      background-position: center;
      padding: 90px 0;
      border-top: 1px solid var(--border-line);
      border-bottom: 1px solid var(--border-line);
    }

    .form-wrapper {
      max-width: 680px;
      margin: 0 auto;
      background: rgba(16, 24, 43, 0.88);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-lg);
      padding: 44px;
      box-shadow: 0 24px 48px rgba(0,0,0,0.5);
      text-align: center;
    }

    .form-title {
      font-size: 26px;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 12px;
    }

    .form-subtitle {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 30px;
      line-height: 1.6;
    }

    .guide-form {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      text-align: left;
    }

    .form-group.full {
      grid-column: span 2;
    }

    .form-label {
      display: block;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 6px;
    }

    .form-input, .form-select {
      width: 100%;
      padding: 12px 14px;
      background: rgba(10, 15, 29, 0.85);
      border: 1px solid rgba(255,255,255,0.12);
      border-radius: var(--radius-sm);
      color: #ffffff;
      font-size: 14px;
      outline: none;
      transition: border-color 0.25s;
    }

    .form-input:focus, .form-select:focus {
      border-color: var(--primary-light);
      box-shadow: 0 0 10px rgba(56, 189, 248, 0.25);
    }

    .form-submit-btn {
      grid-column: span 2;
      padding: 14px;
      background: linear-gradient(135deg, #0284c7 0%, #0284c7 100%);
      color: #ffffff;
      font-size: 15px;
      font-weight: 700;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: var(--accent-glow);
      margin-top: 8px;
    }

    .form-submit-btn:hover {
      box-shadow: 0 0 25px rgba(56, 189, 248, 0.7);
    }

    /* 页脚 */
    .site-footer {
      background: #070b14;
      border-top: 1px solid rgba(255,255,255,0.06);
      padding: 60px 0 36px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }

    .footer-brand h4 {
      font-size: 18px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 14px;
    }

    .footer-brand p {
      font-size: 13px;
      color: var(--text-dim);
      line-height: 1.7;
    }

    .footer-col h5 {
      font-size: 15px;
      font-weight: 600;
      color: #ffffff;
      margin-bottom: 16px;
    }

    .footer-col ul {
      list-style: none;
    }

    .footer-col li {
      margin-bottom: 10px;
    }

    .footer-col a {
      font-size: 13px;
      color: var(--text-dim);
    }

    .footer-col a:hover {
      color: var(--primary-light);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.04);
      padding-top: 24px;
      text-align: center;
      font-size: 12px;
      color: var(--text-dim);
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .catalog-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .bento-grid {
        grid-template-columns: 1fr;
      }
      .bento-card.wide {
        grid-column: span 1;
      }
      .charts-split {
        grid-template-columns: 1fr;
      }
      .resources-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .scene-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
      }
      .hero-section {
        padding: 50px 0 60px;
      }
      .hero-content h1 {
        font-size: 28px;
      }
      .resources-grid, .review-grid, .scene-grid, .catalog-grid {
        grid-template-columns: 1fr;
      }
      .spec-grid-layout {
        grid-template-columns: 1fr;
      }
      .guide-form {
        grid-template-columns: 1fr;
      }
      .form-group.full, .form-submit-btn {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }

/* roulang page: category1 */
:root {
            --bg-dark: #0a0f1d;
            --bg-surface: #10182b;
            --bg-card: rgba(18, 28, 51, 0.72);
            --bg-card-hover: rgba(26, 40, 71, 0.88);
            --border-line: rgba(56, 189, 248, 0.18);
            --border-glow: rgba(56, 189, 248, 0.45);
            --text-main: #f1f5f9;
            --text-muted: #94a3b8;
            --text-dim: #64748b;
            --primary: #0284c7;
            --primary-light: #38bdf8;
            --accent: #0ea5e9;
            --accent-glow: 0 0 25px rgba(56, 189, 248, 0.45);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --container-w: 1200px;
        }
        body {
            background-color: var(--bg-dark);
            color: var(--text-main);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            line-height: 1.68;
            font-size: 16px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }
        a:hover {
            color: var(--primary-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
        }
        .container {
            width: 100%;
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }
        /* 顶部导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 15, 29, 0.86);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-line);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 74px;
        }
        .brand-logo {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #ffffff;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .brand-logo .dot {
            width: 10px;
            height: 10px;
            background: var(--primary-light);
            border-radius: 50%;
            box-shadow: 0 0 10px var(--primary-light);
        }
        .nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 8px;
            margin: 0;
            padding: 0;
        }
        .nav-item {
            position: relative;
        }
        .nav-link {
            display: block;
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: var(--radius-sm);
        }
        .nav-link:hover, .nav-item.active .nav-link {
            color: #ffffff;
            background: rgba(56, 189, 248, 0.08);
        }
        .nav-dropdown {
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 210px;
            background: rgba(16, 24, 43, 0.95);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-sm);
            padding: 8px;
            display: none;
            box-shadow: 0 15px 30px rgba(0,0,0,0.4);
        }
        .nav-item:hover .nav-dropdown {
            display: block;
        }
        .nav-dropdown a {
            display: block;
            padding: 9px 14px;
            font-size: 14px;
            color: var(--text-muted);
            border-radius: var(--radius-sm);
        }
        .nav-dropdown a:hover {
            background: rgba(56, 189, 248, 0.12);
            color: var(--primary-light);
        }
        .nav-cta-btn {
            padding: 9px 20px;
            background: linear-gradient(135deg, var(--primary) 0%, #0369a1 100%);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            box-shadow: var(--accent-glow);
            border: 1px solid rgba(255, 255, 255, 0.15);
            display: inline-block;
        }
        .nav-cta-btn:hover {
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.7);
            transform: translateY(-1px);
            color: #fff;
        }

        /* 预约到店蓝图首屏 */
        .page-hero-booking {
            position: relative;
            padding: 70px 0 80px;
            background: linear-gradient(180deg, rgba(10, 15, 29, 0.88), rgba(16, 24, 43, 0.96)), url('/assets/images/2d0d6ba70fb56bae.webp') center/cover no-repeat;
            border-bottom: 1px solid var(--border-line);
        }
        .hero-booking-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 40px;
            align-items: center;
        }
        .booking-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            background: rgba(56, 189, 248, 0.12);
            border: 1px solid rgba(56, 189, 248, 0.3);
            border-radius: 20px;
            color: var(--primary-light);
            font-size: 13px;
            margin-bottom: 16px;
        }
        .page-hero-booking h1 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            color: #ffffff;
            margin-bottom: 18px;
        }
        .page-hero-booking .hero-lead {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .feature-bullets {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-bottom: 28px;
        }
        .bullet-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            font-size: 13px;
            color: var(--text-main);
        }
        .bullet-item strong {
            color: var(--primary-light);
            display: block;
            margin-bottom: 2px;
        }

        /* 预约面板模拟 */
        .booking-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 28px;
            backdrop-filter: blur(20px);
            box-shadow: 0 20px 45px rgba(0,0,0,0.5);
        }
        .card-head-bar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 16px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
            margin-bottom: 20px;
        }
        .card-head-bar h3 {
            font-size: 17px;
            color: #fff;
            margin: 0;
            font-weight: 700;
        }
        .status-badge {
            font-size: 12px;
            background: rgba(14, 165, 233, 0.2);
            color: var(--primary-light);
            padding: 3px 10px;
            border-radius: 12px;
            border: 1px solid rgba(56,189,248,0.3);
        }
        .slot-selector {
            margin-bottom: 18px;
        }
        .slot-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: block;
        }
        .slot-options {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 8px;
        }
        .slot-pill {
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.12);
            border-radius: var(--radius-sm);
            text-align: center;
            padding: 8px 4px;
            font-size: 12px;
            cursor: pointer;
            transition: all 0.2s;
        }
        .slot-pill.active, .slot-pill:hover {
            border-color: var(--primary-light);
            background: rgba(56, 189, 248, 0.15);
            color: #fff;
        }
        .info-input-group {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: 20px;
        }
        .custom-input {
            width: 100%;
            background: rgba(0, 0, 0, 0.25);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            color: #fff;
            font-size: 13px;
            outline: none;
        }
        .custom-input:focus {
            border-color: var(--primary-light);
            box-shadow: 0 0 10px rgba(56, 189, 248, 0.2);
        }
        .glow-action-btn {
            width: 100%;
            padding: 13px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            border: none;
            border-radius: var(--radius-md);
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            box-shadow: var(--accent-glow);
            cursor: pointer;
            transition: all 0.3s;
        }
        .glow-action-btn:hover {
            box-shadow: 0 0 30px rgba(56, 189, 248, 0.8);
            transform: translateY(-2px);
        }

        /* 主体板块通则 */
        .section-block {
            padding: 72px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .bg-surface-alt {
            background-color: var(--bg-surface);
        }
        .section-header-wrap {
            margin-bottom: 40px;
        }
        .section-eyebrow {
            font-size: 12px;
            color: var(--primary-light);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 8px;
            font-weight: 600;
            display: block;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 720px;
            margin: 0;
            line-height: 1.7;
        }

        /* 玻璃拟态卡片通用 */
        .glass-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-md);
            padding: 24px;
            backdrop-filter: blur(12px);
            transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
            height: 100%;
        }
        .glass-panel:hover {
            border-color: var(--border-glow);
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
        }

        /* 指标进度条组件 */
        .metric-item {
            margin-bottom: 18px;
        }
        .metric-item:last-child {
            margin-bottom: 0;
        }
        .metric-header {
            display: flex;
            justify-content: space-between;
            font-size: 13px;
            margin-bottom: 6px;
        }
        .metric-track {
            height: 7px;
            background: rgba(255,255,255,0.08);
            border-radius: 99px;
            overflow: hidden;
        }
        .metric-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: 99px;
        }

        /* 图文交错与表格样式 */
        .feature-img-box {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-line);
            position: relative;
        }
        .feature-img-box img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            transition: transform 0.5s;
        }
        .feature-img-box:hover img {
            transform: scale(1.03);
        }
        .spec-table {
            width: 100%;
            margin-top: 10px;
            border-collapse: separate;
            border-spacing: 0 8px;
        }
        .spec-table tr {
            background: rgba(255,255,255,0.02);
            transition: background 0.2s;
        }
        .spec-table tr:hover {
            background: rgba(56, 189, 248, 0.05);
        }
        .spec-table td {
            padding: 12px 16px;
            font-size: 14px;
            border-top: 1px solid rgba(255,255,255,0.04);
            border-bottom: 1px solid rgba(255,255,255,0.04);
        }
        .spec-table td:first-child {
            border-left: 1px solid rgba(255,255,255,0.04);
            border-top-left-radius: var(--radius-sm);
            border-bottom-left-radius: var(--radius-sm);
            color: var(--text-muted);
            width: 32%;
        }
        .spec-table td:last-child {
            border-right: 1px solid rgba(255,255,255,0.04);
            border-top-right-radius: var(--radius-sm);
            border-bottom-right-radius: var(--radius-sm);
            color: #fff;
            font-weight: 500;
        }

        /* 用户问答体验板块 */
        .qa-card {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            margin-bottom: 16px;
        }
        .qa-card h4 {
            font-size: 16px;
            color: #fff;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .qa-badge {
            width: 22px;
            height: 22px;
            background: rgba(56, 189, 248, 0.15);
            color: var(--primary-light);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .qa-card p {
            margin: 0;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            padding-left: 32px;
        }

        /* 页脚 */
        .site-footer {
            background: #070b15;
            padding: 60px 0 30px;
            border-top: 1px solid var(--border-line);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h4 {
            font-size: 18px;
            color: #fff;
            margin-bottom: 14px;
            font-weight: 700;
        }
        .footer-brand p {
            font-size: 13px;
            color: var(--text-dim);
            line-height: 1.7;
        }
        .footer-col h5 {
            font-size: 15px;
            color: #fff;
            margin-bottom: 14px;
            font-weight: 600;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col li {
            margin-bottom: 9px;
        }
        .footer-col a {
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-col a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            padding-top: 25px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            text-align: center;
            font-size: 12px;
            color: var(--text-dim);
        }

        @media (max-width: 991px) {
            .hero-booking-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 767px) {
            .nav-links {
                display: none;
            }
            .page-hero-booking h1 {
                font-size: 26px;
            }
            .feature-bullets {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category2 */
:root {
      --bg-dark: #0a0f1d;
      --bg-surface: #10182b;
      --bg-card: rgba(18, 28, 51, 0.72);
      --bg-card-hover: rgba(26, 40, 71, 0.88);
      --border-line: rgba(56, 189, 248, 0.18);
      --border-glow: rgba(56, 189, 248, 0.45);
      --text-main: #f1f5f9;
      --text-muted: #94a3b8;
      --text-dim: #64748b;
      --primary: #0284c7;
      --primary-light: #38bdf8;
      --accent: #0ea5e9;
      --accent-glow: 0 0 25px rgba(56, 189, 248, 0.45);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-w: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.68;
      font-size: 16px;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }
    .container {
      width: 100%;
      max-width: var(--container-w);
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(10, 15, 29, 0.82);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-line);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }
    .brand-logo {
      font-size: 20px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #ffffff;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .brand-logo .dot {
      width: 10px;
      height: 10px;
      background: var(--primary-light);
      border-radius: 50%;
      box-shadow: 0 0 10px var(--primary-light);
    }
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 8px;
    }
    .nav-item {
      position: relative;
    }
    .nav-link {
      display: block;
      padding: 10px 16px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }
    .nav-link:hover, .nav-item.active .nav-link {
      color: #ffffff;
      background: rgba(56, 189, 248, 0.08);
    }
    .nav-dropdown {
      position: absolute;
      top: 100%;
      left: 0;
      background: var(--bg-surface);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 8px;
      min-width: 200px;
      display: none;
      box-shadow: 0 16px 32px rgba(0,0,0,0.4);
    }
    .nav-item:hover .nav-dropdown {
      display: block;
    }
    .nav-dropdown a {
      display: block;
      padding: 9px 14px;
      font-size: 14px;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }
    .nav-dropdown a:hover {
      background: rgba(56, 189, 248, 0.12);
      color: var(--primary-light);
    }
    .nav-cta-btn {
      padding: 9px 20px;
      background: linear-gradient(135deg, var(--primary) 0%, #0369a1 100%);
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      box-shadow: var(--accent-glow);
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .nav-cta-btn:hover {
      box-shadow: 0 0 20px rgba(56, 189, 248, 0.7);
      transform: translateY(-1px);
    }

    /* 视频遮罩风格 Hero */
    .hero-video-banner {
      position: relative;
      padding: 100px 0 110px;
      background: linear-gradient(180deg, rgba(10, 15, 29, 0.75) 0%, rgba(10, 15, 29, 0.95) 100%), url('/assets/images/2d0d6ba70fb56bae.webp') center/cover no-repeat;
      border-bottom: 1px solid var(--border-line);
      overflow: hidden;
      text-align: center;
    }
    .hero-video-banner::before {
      content: '';
      position: absolute;
      top: -50%;
      left: 50%;
      transform: translateX(-50%);
      width: 800px;
      height: 400px;
      background: radial-gradient(circle, rgba(14, 165, 233, 0.25) 0%, rgba(10, 15, 29, 0) 70%);
      pointer-events: none;
    }
    .hero-inner-box {
      max-width: 860px;
      margin: 0 auto;
      position: relative;
      z-index: 2;
    }
    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      background: rgba(56, 189, 248, 0.12);
      border: 1px solid var(--border-glow);
      border-radius: 999px;
      color: var(--primary-light);
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 24px;
      box-shadow: 0 0 15px rgba(56, 189, 248, 0.2);
    }
    .hero-video-banner h1 {
      font-size: 40px;
      line-height: 1.3;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-video-banner p {
      font-size: 17px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 36px;
      max-width: 740px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-action-row {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 18px;
    }
    .btn-glow {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 13px 30px;
      background: linear-gradient(135deg, #0284c7 0%, #0ea5e9 100%);
      color: #ffffff;
      font-size: 15px;
      font-weight: 700;
      border-radius: var(--radius-md);
      box-shadow: var(--accent-glow);
      border: 1px solid rgba(255, 255, 255, 0.2);
    }
    .btn-glow:hover {
      box-shadow: 0 0 30px rgba(56, 189, 248, 0.8);
      transform: translateY(-2px);
    }
    .btn-ghost-play {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 13px 26px;
      background: rgba(18, 28, 51, 0.7);
      color: var(--text-main);
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-line);
      backdrop-filter: blur(10px);
    }
    .btn-ghost-play:hover {
      background: rgba(26, 40, 71, 0.9);
      border-color: var(--border-glow);
      color: var(--primary-light);
    }
    .play-icon-circle {
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: var(--primary-light);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #0a0f1d;
      font-size: 10px;
      padding-left: 2px;
    }

    /* 通用Section */
    .content-section {
      padding: 84px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-surface);
    }
    .section-head {
      margin-bottom: 48px;
      max-width: 820px;
    }
    .section-head.center {
      text-align: center;
      margin-left: auto;
      margin-right: auto;
    }
    .section-eyebrow {
      font-size: 13px;
      text-transform: uppercase;
      font-weight: 700;
      letter-spacing: 1.5px;
      color: var(--primary-light);
      margin-bottom: 10px;
    }
    .section-title {
      font-size: 30px;
      font-weight: 800;
      color: #ffffff;
      line-height: 1.35;
      letter-spacing: -0.5px;
    }
    .section-sub {
      margin-top: 14px;
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 玻璃拟态卡片通用 */
    .glass-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-lg);
      padding: 32px;
      backdrop-filter: blur(16px);
      transition: all 0.3s ease;
    }
    .glass-card:hover {
      background: var(--bg-card-hover);
      border-color: var(--border-glow);
      transform: translateY(-4px);
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
    }

    /* 板块1：几何剪裁结构图解 (非对称双栏) */
    .cut-breakdown-grid {
      display: grid;
      grid-template-columns: 1fr 1.25fr;
      gap: 40px;
      align-items: center;
    }
    .cut-visual-wrapper {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-line);
    }
    .cut-visual-wrapper img {
      width: 100%;
      height: 480px;
      object-fit: cover;
    }
    .cut-data-badge {
      position: absolute;
      bottom: 20px;
      left: 20px;
      right: 20px;
      background: rgba(10, 15, 29, 0.88);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-md);
      padding: 16px 20px;
      backdrop-filter: blur(12px);
    }
    .badge-data-val {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary-light);
    }
    .badge-data-sub {
      font-size: 13px;
      color: var(--text-muted);
    }
    .cut-points-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .cut-point-item {
      display: flex;
      gap: 18px;
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 22px;
    }
    .cut-num {
      width: 42px;
      height: 42px;
      flex-shrink: 0;
      border-radius: 50%;
      background: rgba(56, 189, 248, 0.15);
      color: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 16px;
      border: 1px solid var(--border-glow);
    }
    .cut-point-item h4 {
      font-size: 17px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 6px;
    }
    .cut-point-item p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块2：多维静态尺码对照矩阵 (表格+标签) */
    .table-container {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-lg);
      padding: 30px;
      overflow-x: auto;
      backdrop-filter: blur(16px);
    }
    .custom-spec-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .custom-spec-table th {
      padding: 16px 20px;
      font-size: 14px;
      font-weight: 700;
      color: var(--primary-light);
      border-bottom: 1px solid var(--border-glow);
      background: rgba(56, 189, 248, 0.05);
      white-space: nowrap;
    }
    .custom-spec-table td {
      padding: 18px 20px;
      font-size: 14px;
      color: var(--text-main);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .custom-spec-table tr:last-child td {
      border-bottom: none;
    }
    .custom-spec-table tr:hover td {
      background: rgba(56, 189, 248, 0.04);
    }
    .spec-tag {
      display: inline-block;
      padding: 4px 10px;
      border-radius: 6px;
      font-size: 12px;
      font-weight: 600;
      background: rgba(14, 165, 233, 0.15);
      color: var(--primary-light);
      border: 1px solid rgba(14, 165, 233, 0.3);
    }

    /* 板块3：体型受力与动态受力测定 (4卡片分栏) */
    .metrics-quad-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }
    .metric-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 26px 22px;
      text-align: left;
    }
    .metric-gauge {
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      margin-bottom: 14px;
    }
    .metric-gauge .big-stat {
      font-size: 32px;
      font-weight: 800;
      color: #ffffff;
      letter-spacing: -1px;
    }
    .metric-gauge .unit {
      font-size: 13px;
      color: var(--primary-light);
      font-weight: 600;
    }
    .progress-track {
      width: 100%;
      height: 6px;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 999px;
      overflow: hidden;
      margin-bottom: 16px;
    }
    .progress-fill {
      height: 100%;
      background: linear-gradient(90deg, #0284c7, #38bdf8);
      border-radius: 999px;
    }
    .metric-card h4 {
      font-size: 16px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 8px;
    }
    .metric-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块4：真人身材试穿档案 (Tabs式多图卡片) */
    .tester-case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .case-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .case-thumb {
      height: 240px;
      width: 100%;
      position: relative;
    }
    .case-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-badge-top {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(10, 15, 29, 0.85);
      border: 1px solid var(--border-glow);
      padding: 4px 12px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 700;
      color: var(--primary-light);
    }
    .case-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .case-specs {
      display: flex;
      justify-content: space-between;
      padding-bottom: 14px;
      margin-bottom: 14px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 13px;
      color: var(--text-muted);
    }
    .case-specs span strong {
      color: #ffffff;
    }
    .case-body h4 {
      font-size: 18px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 10px;
    }
    .case-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
    }
    .case-tag-row {
      margin-top: auto;
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }
    .mini-badge {
      font-size: 11px;
      padding: 3px 8px;
      background: rgba(255, 255, 255, 0.05);
      border-radius: 4px;
      color: var(--text-dim);
    }

    /* 板块5：微距细节与做工考量 (图文交错) */
    .detail-feature-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .detail-card-stack {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .detail-glass-item {
      padding: 24px;
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
    }
    .detail-glass-item h4 {
      font-size: 17px;
      font-weight: 700;
      color: var(--primary-light);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .detail-glass-item p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }
    .detail-media-wrap {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-line);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    }
    .detail-media-wrap img {
      width: 100%;
      height: 440px;
      object-fit: cover;
    }

    /* 板块6：常见选码疑问与排雷 (网格问答) */
    .faq-compact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .faq-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 26px;
    }
    .faq-q {
      font-size: 16px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 12px;
      display: flex;
      align-items: baseline;
      gap: 10px;
    }
    .faq-mark {
      font-size: 14px;
      color: var(--primary-light);
      font-weight: 800;
    }
    .faq-a {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块7：选码计算与行动指引 CTA */
    .calc-action-section {
      background: radial-gradient(circle at center, rgba(14, 165, 233, 0.15) 0%, rgba(10, 15, 29, 0) 70%), var(--bg-surface);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-glow);
      padding: 60px 40px;
      text-align: center;
      margin: 40px 0;
      box-shadow: 0 0 40px rgba(2, 132, 199, 0.15);
    }
    .calc-action-section h2 {
      font-size: 28px;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 16px;
    }
    .calc-action-section p {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto 32px;
      line-height: 1.75;
    }
    .cta-button-group {
      display: flex;
      justify-content: center;
      gap: 16px;
    }

    /* 底部 Footer */
    .site-footer {
      background: #080c17;
      border-top: 1px solid var(--border-line);
      padding: 70px 0 30px;
      color: var(--text-muted);
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand h4 {
      font-size: 18px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 16px;
    }
    .footer-brand p {
      line-height: 1.7;
      color: var(--text-dim);
      font-size: 13px;
    }
    .footer-col h5 {
      font-size: 15px;
      font-weight: 600;
      color: #ffffff;
      margin-bottom: 18px;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-col ul a:hover {
      color: var(--primary-light);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255, 255, 0.06);
      padding-top: 25px;
      text-align: center;
      color: var(--text-dim);
      font-size: 13px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .cut-breakdown-grid,
      .detail-feature-row {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .metrics-quad-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
      }
    }
    @media (max-width: 768px) {
      .hero-video-banner {
        padding: 60px 0 70px;
      }
      .hero-video-banner h1 {
        font-size: 28px;
      }
      .hero-action-row {
        flex-direction: column;
        gap: 12px;
      }
      .btn-glow, .btn-ghost-play {
        width: 100%;
        justify-content: center;
      }
      .tester-case-grid,
      .faq-compact-grid {
        grid-template-columns: 1fr;
      }
      .metrics-quad-grid {
        grid-template-columns: 1fr;
      }
      .calc-action-section {
        padding: 40px 20px;
      }
      .cta-button-group {
        flex-direction: column;
      }
      .site-header .nav-links {
        display: none;
      }
    }

/* roulang page: category4 */
:root {
      --bg-dark: #0a0f1d;
      --bg-surface: #10182b;
      --bg-card: rgba(18, 28, 51, 0.72);
      --bg-card-hover: rgba(26, 40, 71, 0.88);
      --border-line: rgba(56, 189, 248, 0.18);
      --border-glow: rgba(56, 189, 248, 0.45);
      --text-main: #f1f5f9;
      --text-muted: #94a3b8;
      --text-dim: #64748b;
      --primary: #0284c7;
      --primary-light: #38bdf8;
      --accent: #0ea5e9;
      --accent-glow: 0 0 25px rgba(56, 189, 248, 0.45);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-w: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.68;
      font-size: 16px;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }
    .container {
      width: 100%;
      max-width: var(--container-w);
      margin: 0 auto;
      padding: 0 24px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(10, 15, 29, 0.82);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-line);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }
    .brand-logo {
      font-size: 20px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #ffffff;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .brand-logo .dot {
      width: 10px;
      height: 10px;
      background: var(--primary-light);
      border-radius: 50%;
      box-shadow: 0 0 10px var(--primary-light);
    }
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 8px;
    }
    .nav-item {
      position: relative;
    }
    .nav-link {
      display: block;
      padding: 10px 16px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }
    .nav-link:hover, .nav-item.active .nav-link {
      color: #ffffff;
      background: rgba(56, 189, 248, 0.08);
    }
    .dropdown-menu {
      position: absolute;
      top: 100%;
      left: 0;
      width: 220px;
      background: var(--bg-surface);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-sm);
      padding: 8px;
      display: none;
      box-shadow: 0 12px 30px rgba(0,0,0,0.4);
    }
    .nav-item:hover .dropdown-menu {
      display: block;
    }
    .dropdown-menu a {
      display: block;
      padding: 9px 14px;
      font-size: 14px;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }
    .dropdown-menu a:hover {
      background: rgba(56, 189, 248, 0.12);
      color: var(--primary-light);
    }
    .nav-cta-btn {
      padding: 9px 20px;
      background: linear-gradient(135deg, var(--primary) 0%, #0369a1 100%);
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      box-shadow: var(--accent-glow);
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .nav-cta-btn:hover {
      box-shadow: 0 0 20px rgba(56, 189, 248, 0.7);
      transform: translateY(-1px);
    }

    /* 内页特有 Hero 视觉 */
    .cat-hero {
      position: relative;
      padding: 72px 0 80px;
      background-image: linear-gradient(to bottom, rgba(10, 15, 29, 0.88), rgba(10, 15, 29, 0.98)), url('/assets/images/dd1f4f3b88e831dc.jpg');
      background-size: cover;
      background-position: center;
      border-bottom: 1px solid var(--border-line);
    }
    .cat-hero-wrap {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }
    .cat-hero h1 {
      font-size: 36px;
      line-height: 1.3;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 18px;
    }
    .cat-hero-text {
      color: var(--text-muted);
      font-size: 16px;
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .hero-tag {
      padding: 5px 12px;
      background: rgba(56, 189, 248, 0.1);
      border: 1px solid rgba(56, 189, 248, 0.25);
      border-radius: 999px;
      font-size: 13px;
      color: var(--primary-light);
    }
    .hero-feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 24px;
      backdrop-filter: blur(14px);
    }
    .hero-feature-card img {
      border-radius: var(--radius-sm);
      height: 220px;
      width: 100%;
      margin-bottom: 16px;
    }

    /* 板块通用样式 */
    .content-section {
      padding: 72px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .section-alt {
      background-color: var(--bg-surface);
    }
    .section-title {
      font-size: 28px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 12px;
    }
    .section-subtitle {
      color: var(--text-muted);
      font-size: 15px;
      margin-bottom: 40px;
      max-width: 720px;
    }
    .section-head.center {
      text-align: center;
      margin-left: auto;
      margin-right: auto;
    }

    /* 方案主导卡片流 */
    .guide-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .guide-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: transform 0.3s ease, border-color 0.3s ease;
    }
    .guide-card:hover {
      transform: translateY(-4px);
      border-color: var(--primary-light);
      box-shadow: 0 12px 28px rgba(0,0,0,0.4);
    }
    .guide-card-img {
      height: 180px;
      width: 100%;
    }
    .guide-card-body {
      padding: 22px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .guide-card-tag {
      font-size: 12px;
      color: var(--primary-light);
      margin-bottom: 8px;
      font-weight: 600;
    }
    .guide-card h3 {
      font-size: 18px;
      color: #ffffff;
      margin-bottom: 10px;
    }
    .guide-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 双列图文拆解 */
    .split-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      margin-bottom: 48px;
    }
    .split-row.reverse {
      direction: rtl;
    }
    .split-row.reverse .split-content {
      direction: ltr;
    }
    .split-img {
      border-radius: var(--radius-md);
      border: 1px solid var(--border-line);
      height: 320px;
      width: 100%;
    }
    .split-content h3 {
      font-size: 22px;
      color: #ffffff;
      margin-bottom: 14px;
    }
    .split-content p {
      color: var(--text-muted);
      font-size: 15px;
      line-height: 1.8;
      margin-bottom: 16px;
    }
    .feature-list {
      list-style: none;
    }
    .feature-list li {
      position: relative;
      padding-left: 20px;
      font-size: 14px;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .feature-list li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 8px;
      width: 6px;
      height: 6px;
      background: var(--primary-light);
      border-radius: 50%;
    }

    /* 鞋履适配矩阵 */
    .shoes-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .shoe-item {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-sm);
      padding: 18px;
      text-align: center;
    }
    .shoe-item img {
      height: 130px;
      width: 100%;
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
    }
    .shoe-item h4 {
      font-size: 16px;
      color: #ffffff;
      margin-bottom: 6px;
    }
    .shoe-item p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 常见穿搭解答 */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-sm);
      padding: 20px;
      margin-bottom: 16px;
    }
    .faq-card h4 {
      font-size: 16px;
      color: var(--primary-light);
      margin-bottom: 8px;
    }
    .faq-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 底部收口与全站页脚 */
    .site-footer {
      background: #080c18;
      border-top: 1px solid var(--border-line);
      padding: 60px 0 30px;
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.8fr 1fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 40px;
    }
    .footer-brand h4 {
      color: #fff;
      font-size: 17px;
      margin-bottom: 14px;
    }
    .footer-brand p {
      color: var(--text-dim);
      line-height: 1.7;
    }
    .footer-col h5 {
      color: #fff;
      font-size: 15px;
      margin-bottom: 16px;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col li {
      margin-bottom: 10px;
    }
    .footer-col a {
      color: var(--text-muted);
    }
    .footer-col a:hover {
      color: var(--primary-light);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.06);
      padding-top: 24px;
      text-align: center;
      color: var(--text-dim);
      font-size: 13px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .cat-hero-wrap {
        grid-template-columns: 1fr;
      }
      .guide-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .shoes-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .split-row, .split-row.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
      }
      .split-row.reverse .split-content {
        direction: ltr;
      }
      .nav-links {
        display: none;
      }
      .cat-hero h1 {
        font-size: 26px;
      }
      .guide-grid {
        grid-template-columns: 1fr;
      }
      .shoes-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }

/* roulang page: category3 */
:root {
      --bg-dark: #0a0f1d;
      --bg-surface: #10182b;
      --bg-card: rgba(18, 28, 51, 0.72);
      --bg-card-hover: rgba(26, 40, 71, 0.88);
      --border-line: rgba(56, 189, 248, 0.18);
      --border-glow: rgba(56, 189, 248, 0.45);
      --text-main: #f1f5f9;
      --text-muted: #94a3b8;
      --text-dim: #64748b;
      --primary: #0284c7;
      --primary-light: #38bdf8;
      --accent: #0ea5e9;
      --accent-glow: 0 0 25px rgba(56, 189, 248, 0.45);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-w: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.68;
      font-size: 16px;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }
    .container {
      width: 100%;
      max-width: var(--container-w);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(10, 15, 29, 0.88);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-line);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }
    .brand-logo {
      font-size: 20px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #ffffff;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .brand-logo .dot {
      width: 10px;
      height: 10px;
      background: var(--primary-light);
      border-radius: 50%;
      box-shadow: 0 0 10px var(--primary-light);
    }
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 8px;
    }
    .nav-item {
      position: relative;
    }
    .nav-link {
      display: block;
      padding: 10px 16px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }
    .nav-link:hover, .nav-item.active .nav-link {
      color: #ffffff;
      background: rgba(56, 189, 248, 0.12);
    }
    .nav-dropdown {
      display: none;
      position: absolute;
      top: 100%;
      left: 0;
      min-width: 200px;
      background: var(--bg-surface);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-sm);
      padding: 8px;
      box-shadow: 0 10px 25px rgba(0,0,0,0.4);
    }
    .nav-item:hover .nav-dropdown {
      display: block;
    }
    .nav-dropdown a {
      display: block;
      padding: 9px 14px;
      font-size: 14px;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }
    .nav-dropdown a:hover {
      background: rgba(56, 189, 248, 0.12);
      color: var(--primary-light);
    }
    .nav-cta-btn {
      padding: 9px 20px;
      background: linear-gradient(135deg, var(--primary) 0%, #0369a1 100%);
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      box-shadow: var(--accent-glow);
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .nav-cta-btn:hover {
      box-shadow: 0 0 20px rgba(56, 189, 248, 0.7);
      transform: translateY(-1px);
    }

    /* 页面通用板块 */
    .content-section {
      padding: 76px 0;
      border-bottom: 1px solid rgba(255,255,255,0.05);
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-surface);
    }
    .section-header-compact {
      margin-bottom: 40px;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      color: var(--primary-light);
      text-transform: uppercase;
      font-weight: 700;
      margin-bottom: 10px;
      letter-spacing: 1px;
    }
    .section-title {
      font-size: 30px;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .section-intro {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 800px;
      line-height: 1.7;
    }

    /* 分类页 Hero：自测选型短问卷 */
    .category-hero {
      padding: 70px 0 80px;
      background: linear-gradient(180deg, rgba(16, 24, 43, 0.85) 0%, rgba(10, 15, 29, 0.98) 100%), url('/assets/images/9f8186ba31b61649.jpg');
      background-size: cover;
      background-position: center;
      border-bottom: 1px solid var(--border-line);
    }
    .quiz-hero-layout {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 44px;
      align-items: center;
    }
    .quiz-card {
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-lg);
      padding: 30px;
      backdrop-filter: blur(16px);
      box-shadow: 0 20px 45px rgba(0, 0, 0, 0.45);
    }
    .quiz-option-group {
      margin-bottom: 20px;
    }
    .quiz-label {
      font-size: 14px;
      color: #ffffff;
      font-weight: 600;
      margin-bottom: 10px;
      display: block;
    }
    .quiz-chips {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
    }
    .quiz-chip {
      padding: 8px 16px;
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.12);
      border-radius: var(--radius-sm);
      font-size: 13px;
      color: var(--text-muted);
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .quiz-chip.active, .quiz-chip:hover {
      background: rgba(56, 189, 248, 0.16);
      border-color: var(--primary-light);
      color: #ffffff;
    }
    .quiz-result-preview {
      background: rgba(10, 15, 29, 0.6);
      border-radius: var(--radius-md);
      padding: 18px;
      border: 1px dashed rgba(56, 189, 248, 0.3);
      margin-top: 20px;
    }
    .preview-score {
      font-size: 24px;
      font-weight: 800;
      color: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .preview-desc {
      font-size: 13px;
      color: var(--text-muted);
      margin-top: 6px;
    }

    /* 板块组件系统 */
    .metric-grid-four {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .metric-card-styled {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 24px;
      backdrop-filter: blur(12px);
      transition: transform 0.3s ease, border-color 0.3s ease;
    }
    .metric-card-styled:hover {
      transform: translateY(-4px);
      border-color: var(--primary-light);
      box-shadow: 0 10px 25px rgba(2, 132, 199, 0.15);
    }
    .metric-val {
      font-size: 32px;
      font-weight: 800;
      color: #ffffff;
      line-height: 1.1;
      margin-bottom: 8px;
      background: linear-gradient(180deg, #fff 0%, var(--primary-light) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .metric-title {
      font-size: 16px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 8px;
    }
    .metric-p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 图文交替体验深度卡 */
    .feature-split-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      margin-bottom: 48px;
    }
    .feature-split-row:last-child {
      margin-bottom: 0;
    }
    .feature-split-reverse {
      direction: rtl;
    }
    .feature-split-reverse > * {
      direction: ltr;
    }
    .split-image-box {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-line);
      position: relative;
    }
    .split-image-box img {
      width: 100%;
      height: 340px;
      transition: transform 0.4s ease;
    }
    .split-image-box:hover img {
      transform: scale(1.03);
    }
    .split-text-box h3 {
      font-size: 22px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 14px;
    }
    .split-text-box p {
      font-size: 15px;
      color: var(--text-muted);
      margin-bottom: 18px;
      line-height: 1.7;
    }
    .highlight-pill-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .highlight-pill {
      font-size: 12px;
      padding: 5px 12px;
      background: rgba(56, 189, 248, 0.08);
      border: 1px solid rgba(56, 189, 248, 0.2);
      border-radius: 999px;
      color: var(--primary-light);
    }

    /* 压感与弹性分布雷达看板模拟 */
    .pressure-panel {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-lg);
      padding: 36px;
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 36px;
      align-items: center;
    }
    .pressure-item {
      margin-bottom: 20px;
    }
    .pressure-item:last-child {
      margin-bottom: 0;
    }
    .pressure-label-wrap {
      display: flex;
      justify-content: space-between;
      margin-bottom: 6px;
      font-size: 14px;
    }
    .pressure-bar-bg {
      height: 8px;
      background: rgba(255,255,255,0.08);
      border-radius: 999px;
      overflow: hidden;
    }
    .pressure-bar-fill {
      height: 100%;
      background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
      border-radius: 999px;
    }

    /* 动态场景体验矩阵 */
    .scenario-grid-three {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .scenario-item-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .scenario-item-card img {
      width: 100%;
      height: 200px;
    }
    .scenario-card-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .scenario-tag-micro {
      font-size: 12px;
      color: var(--primary-light);
      margin-bottom: 8px;
      font-weight: 600;
    }
    .scenario-card-body h4 {
      font-size: 18px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 12px;
    }
    .scenario-card-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .scenario-verdict {
      margin-top: auto;
      padding-top: 14px;
      border-top: 1px solid rgba(255,255,255,0.06);
      font-size: 13px;
      color: #38bdf8;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* 水洗与耐穿耐久对比流 */
    .durability-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      position: relative;
    }
    .timeline-step-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 22px;
      position: relative;
    }
    .timeline-badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      background: rgba(2, 132, 199, 0.2);
      border: 1px solid var(--primary-light);
      color: #ffffff;
      padding: 3px 8px;
      border-radius: 4px;
      margin-bottom: 12px;
    }
    .timeline-step-card h5 {
      font-size: 16px;
      color: #ffffff;
      margin-bottom: 8px;
    }
    .timeline-step-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 真实体验对比表 */
    .compare-table-wrapper {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-lg);
      overflow-x: auto;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid rgba(255,255,255,0.06);
      font-size: 14px;
    }
    .compare-table th {
      background: rgba(255,255,255,0.03);
      color: #ffffff;
      font-weight: 700;
    }
    .compare-table td {
      color: var(--text-muted);
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .text-highlight {
      color: var(--primary-light);
      font-weight: 600;
    }

    /* 底部收口与转化条 */
    .summary-cta-box {
      background: linear-gradient(135deg, rgba(2, 132, 199, 0.18) 0%, rgba(10, 15, 29, 0.9) 100%);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-lg);
      padding: 44px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      box-shadow: 0 15px 35px rgba(0,0,0,0.3);
    }
    .summary-cta-text h3 {
      font-size: 24px;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 8px;
    }
    .summary-cta-text p {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 680px;
    }

    /* 页脚 */
    .site-footer {
      background: #080c17;
      border-top: 1px solid var(--border-line);
      padding: 64px 0 32px;
      color: var(--text-muted);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand h4 {
      font-size: 18px;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 14px;
    }
    .footer-brand p {
      font-size: 14px;
      line-height: 1.7;
      color: var(--text-dim);
    }
    .footer-col h5 {
      font-size: 15px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 16px;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col li {
      margin-bottom: 10px;
    }
    .footer-col a {
      font-size: 14px;
      color: var(--text-muted);
    }
    .footer-col a:hover {
      color: var(--primary-light);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.06);
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
      color: var(--text-dim);
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .quiz-hero-layout {
        grid-template-columns: 1fr;
      }
      .metric-grid-four {
        grid-template-columns: repeat(2, 1fr);
      }
      .durability-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .nav-links, .nav-cta-btn {
        display: none;
      }
      .feature-split-row, .feature-split-reverse {
        grid-template-columns: 1fr;
      }
      .pressure-panel {
        grid-template-columns: 1fr;
      }
      .scenario-grid-three {
        grid-template-columns: 1fr;
      }
      .durability-timeline {
        grid-template-columns: 1fr;
      }
      .summary-cta-box {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
      }
      .section-title {
        font-size: 24px;
      }
    }

/* roulang page: index */
:root {
            --bg-main: #060b19;
            --bg-secondary: #0c152e;
            --bg-card: rgba(16, 28, 60, 0.65);
            --bg-glass: rgba(23, 38, 77, 0.55);
            --border-glass: rgba(56, 128, 255, 0.22);
            --text-primary: #e6f0ff;
            --text-secondary: #94a9d4;
            --text-muted: #627ca8;
            --accent-blue: #00d2ff;
            --accent-glow: #0066ff;
            --accent-cyan: #00f2fe;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.4);
            --glow-btn: 0 0 20px rgba(0, 210, 255, 0.45);
            --container: 1200px;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-main);
            color: var(--text-primary);
            line-height: 1.65;
            background-image: radial-gradient(circle at 15% 10%, rgba(0, 102, 255, 0.12) 0%, transparent 45%),
                              radial-gradient(circle at 85% 65%, rgba(0, 242, 254, 0.08) 0%, transparent 45%);
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 统一资源目录导航条 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(6, 11, 25, 0.82);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-glass);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .brand-logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: #ffffff;
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.5px;
        }
        .brand-logo span {
            color: var(--accent-cyan);
            text-shadow: 0 0 12px rgba(0, 242, 254, 0.6);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        .nav-item {
            position: relative;
            padding: 8px 12px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .nav-item:hover, .nav-item.active {
            color: var(--accent-cyan);
        }
        .dropdown-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 220px;
            background: var(--bg-secondary);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 10px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(16px);
        }
        .nav-item:hover .dropdown-menu {
            display: block;
        }
        .dropdown-menu a {
            display: block;
            padding: 8px 12px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            border-radius: 8px;
        }
        .dropdown-menu a:hover {
            background: rgba(0, 210, 255, 0.12);
            color: #ffffff;
        }
        .header-cta-btn {
            background: linear-gradient(135deg, var(--accent-glow), var(--accent-cyan));
            color: #ffffff;
            padding: 9px 20px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            box-shadow: var(--glow-btn);
            border: none;
            cursor: pointer;
        }
        .header-cta-btn:hover {
            opacity: 0.92;
            transform: translateY(-1px);
        }

        /* Hero 裂变邀请与首屏结构 */
        .hero-section {
            padding: 70px 0 60px;
            background: linear-gradient(180deg, rgba(12, 21, 46, 0.7) 0%, rgba(6, 11, 25, 0.9) 100%),
                        url('/assets/images/3da18a93daae2771.jpg') center/cover no-repeat;
            position: relative;
            border-bottom: 1px solid var(--border-glass);
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.25fr 0.95fr;
            gap: 40px;
            align-items: center;
        }
        .hero-content h1 {
            font-size: 2.35rem;
            line-height: 1.3;
            margin-bottom: 20px;
            color: #ffffff;
            font-weight: 800;
        }
        .hero-content h1 em {
            font-style: normal;
            background: linear-gradient(90deg, #ffffff, var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-lead {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .hero-meta-strip {
            display: flex;
            gap: 20px;
            margin-bottom: 30px;
            flex-wrap: wrap;
        }
        .meta-pill {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.88rem;
            color: var(--text-primary);
        }
        .meta-pill strong {
            color: var(--accent-cyan);
            margin-right: 4px;
        }

        /* 裂变邀请与进度卡片 */
        .share-card-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 30px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(12px);
            position: relative;
        }
        .share-card-header {
            margin-bottom: 18px;
        }
        .share-tag {
            display: inline-block;
            background: rgba(0, 210, 255, 0.15);
            color: var(--accent-cyan);
            font-size: 0.78rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 6px;
            margin-bottom: 8px;
            letter-spacing: 0.5px;
        }
        .share-card-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: #ffffff;
        }
        .progress-box {
            margin: 20px 0;
        }
        .progress-label-wrap {
            display: flex;
            justify-content: space-between;
            font-size: 0.85rem;
            margin-bottom: 8px;
            color: var(--text-secondary);
        }
        .progress-bar-bg {
            height: 10px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            overflow: hidden;
            position: relative;
        }
        .progress-bar-fill {
            height: 100%;
            width: 82%;
            background: linear-gradient(90deg, var(--accent-glow), var(--accent-cyan));
            border-radius: 10px;
            box-shadow: 0 0 10px var(--accent-cyan);
        }
        .share-reward-desc {
            font-size: 0.86rem;
            color: var(--text-muted);
            margin-bottom: 22px;
            line-height: 1.55;
        }
        .share-action-group {
            display: flex;
            gap: 12px;
        }
        .share-primary-btn {
            flex: 1;
            background: linear-gradient(135deg, var(--accent-glow), var(--accent-blue));
            color: #ffffff;
            border: none;
            padding: 12px 18px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            box-shadow: var(--glow-btn);
            text-align: center;
        }
        .share-primary-btn:hover {
            box-shadow: 0 0 25px rgba(0, 210, 255, 0.7);
        }
        .share-secondary-btn {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            color: var(--text-primary);
            padding: 12px 16px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            cursor: pointer;
        }

        /* 统一 Section 排版 */
        .content-section {
            padding: 68px 0;
            position: relative;
        }
        .section-alt {
            background: rgba(12, 21, 46, 0.35);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .section-header {
            margin-bottom: 38px;
            max-width: 760px;
        }
        .section-badge {
            display: inline-block;
            font-size: 0.8rem;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 1px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .section-intro {
            font-size: 0.98rem;
            color: var(--text-secondary);
            line-height: 1.68;
        }

        /* 玻璃拟态卡片网格 */
        .glass-card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 22px;
        }
        .glass-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 24px;
            backdrop-filter: blur(10px);
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .glass-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 210, 255, 0.45);
            box-shadow: 0 12px 30px rgba(0, 102, 255, 0.15);
        }
        .card-icon-tag {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(0, 210, 255, 0.12);
            color: var(--accent-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 16px;
        }
        .card-h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 10px;
        }
        .card-p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* 关键图表 / 对比数据条 */
        .chart-box-wrapper {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 32px;
            backdrop-filter: blur(12px);
        }
        .chart-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .chart-metric-item {
            border-left: 3px solid var(--accent-cyan);
            padding-left: 18px;
        }
        .chart-metric-val {
            font-size: 2.1rem;
            font-weight: 800;
            color: #ffffff;
            line-height: 1;
            margin-bottom: 6px;
        }
        .chart-metric-val small {
            font-size: 1rem;
            color: var(--accent-cyan);
        }
        .chart-metric-name {
            font-size: 0.92rem;
            font-weight: 600;
            color: #e2ecff;
            margin-bottom: 6px;
        }
        .chart-metric-info {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.45;
        }

        /* 资料目录列表 */
        .catalog-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
        }
        .catalog-table th, .catalog-table td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 0.92rem;
        }
        .catalog-table th {
            background: rgba(255, 255, 255, 0.03);
            color: var(--text-muted);
            font-weight: 600;
            text-transform: uppercase;
            font-size: 0.8rem;
        }
        .catalog-table tr:hover td {
            background: rgba(0, 210, 255, 0.04);
        }
        .catalog-badge {
            background: rgba(0, 242, 254, 0.1);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 242, 254, 0.25);
            padding: 3px 8px;
            border-radius: 4px;
            font-size: 0.76rem;
        }

        /* 图文对比分栏 */
        .feature-duo-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
        }
        .feature-media-frame {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            position: relative;
            box-shadow: var(--shadow-card);
        }
        .feature-media-frame img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .feature-media-frame:hover img {
            transform: scale(1.03);
        }

        /* 评价墙 */
        .review-card-group {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }
        .review-quote-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 22px;
            position: relative;
        }
        .review-score {
            color: #ffd166;
            font-size: 0.95rem;
            margin-bottom: 10px;
        }
        .review-body {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .review-user-row {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .review-avatar-dot {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--border-glass);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-weight: 700;
        }

        /* 领取与反馈表单 */
        .form-cta-container {
            max-width: 820px;
            margin: 0 auto;
            background: var(--bg-card);
            border: 1px solid rgba(0, 210, 255, 0.35);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: 0 0 35px rgba(0, 102, 255, 0.2);
            backdrop-filter: blur(14px);
        }
        .form-grid-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
            margin-top: 24px;
        }
        .form-full-span {
            grid-column: span 2;
        }
        .form-label {
            display: block;
            font-size: 0.86rem;
            color: var(--text-secondary);
            margin-bottom: 6px;
        }
        .form-input {
            width: 100%;
            background: rgba(6, 11, 25, 0.7);
            border: 1px solid var(--border-glass);
            border-radius: 8px;
            padding: 12px 14px;
            font-size: 0.9rem;
            color: #ffffff;
            outline: none;
            transition: border-color 0.2s;
        }
        .form-input:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
        }
        .form-submit-btn {
            background: linear-gradient(135deg, var(--accent-glow), var(--accent-cyan));
            color: #ffffff;
            border: none;
            padding: 14px 28px;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 700;
            cursor: pointer;
            width: 100%;
            box-shadow: var(--glow-btn);
            transition: all 0.2s ease;
        }
        .form-submit-btn:hover {
            box-shadow: 0 0 30px rgba(0, 242, 254, 0.6);
            transform: translateY(-2px);
        }

        /* 页脚 */
        .site-footer {
            background: #040813;
            border-top: 1px solid var(--border-glass);
            padding: 50px 0 30px;
            font-size: 0.88rem;
            color: var(--text-muted);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 40px;
        }
        .footer-brand h4 {
            color: #ffffff;
            font-size: 1.15rem;
            margin-bottom: 12px;
        }
        .footer-brand p {
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .footer-links-col h5 {
            color: var(--text-primary);
            font-size: 0.95rem;
            margin-bottom: 14px;
        }
        .footer-links-col ul {
            list-style: none;
        }
        .footer-links-col li {
            margin-bottom: 9px;
        }
        .footer-links-col a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
            }
            .chart-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-duo-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .hero-content h1 {
                font-size: 1.85rem;
            }
            .form-grid-inner {
                grid-template-columns: 1fr;
            }
            .form-full-span {
                grid-column: span 1;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .chart-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category1 */
:root {
      --bg-dark: #0a0f1d;
      --bg-surface: #10182b;
      --bg-card: rgba(18, 28, 51, 0.72);
      --bg-card-hover: rgba(26, 40, 71, 0.88);
      --border-line: rgba(56, 189, 248, 0.18);
      --border-glow: rgba(56, 189, 248, 0.45);
      --text-main: #f1f5f9;
      --text-muted: #94a3b8;
      --text-dim: #64748b;
      --primary: #0284c7;
      --primary-light: #38bdf8;
      --accent: #0ea5e9;
      --accent-glow: 0 0 25px rgba(56, 189, 248, 0.45);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-w: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.68;
      font-size: 16px;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }
    .container {
      width: 100%;
      max-width: var(--container-w);
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(10, 15, 29, 0.88);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-line);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }
    .brand-logo {
      font-size: 20px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #ffffff;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .brand-logo span {
      color: var(--primary-light);
    }
    .main-nav {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 12px;
    }
    .nav-item {
      position: relative;
    }
    .nav-item > a {
      display: block;
      padding: 10px 16px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }
    .nav-item > a:hover,
    .nav-item > a.active {
      color: #ffffff;
      background: rgba(56, 189, 248, 0.12);
    }
    .dropdown-menu {
      display: none;
      position: absolute;
      top: 100%;
      left: 0;
      min-width: 220px;
      background: var(--bg-surface);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 10px 0;
      box-shadow: 0 14px 28px rgba(0,0,0,0.45);
      z-index: 50;
    }
    .nav-item:hover .dropdown-menu {
      display: block;
    }
    .dropdown-menu a {
      display: block;
      padding: 9px 18px;
      font-size: 14px;
      color: var(--text-muted);
    }
    .dropdown-menu a:hover {
      background: rgba(56, 189, 248, 0.15);
      color: var(--primary-light);
    }
    .header-cta-btn {
      padding: 9px 20px;
      background: linear-gradient(135deg, var(--primary) 0%, #0369a1 100%);
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      box-shadow: var(--accent-glow);
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .header-cta-btn:hover {
      box-shadow: 0 0 20px rgba(56, 189, 248, 0.7);
      transform: translateY(-1px);
    }

    /* 内页分类页专有样式 */
    .page-hero {
      position: relative;
      padding: 68px 0 72px;
      background: radial-gradient(circle at 80% 20%, rgba(2, 132, 199, 0.22) 0%, transparent 60%),
                  linear-gradient(180deg, #090e1c 0%, #0c1427 100%);
      border-bottom: 1px solid var(--border-line);
    }
    .hero-split {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }
    .hero-title-area h1 {
      font-size: 34px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
      color: #fff;
    }
    .hero-lead-text {
      font-size: 16px;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.75;
    }
    .badge-pill {
      display: inline-block;
      padding: 5px 14px;
      background: rgba(56, 189, 248, 0.12);
      border: 1px solid var(--border-glow);
      border-radius: 999px;
      font-size: 13px;
      color: var(--primary-light);
      margin-bottom: 16px;
    }
    .hero-quick-data {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      margin-top: 28px;
    }
    .quick-data-box {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-sm);
      padding: 16px;
      text-align: center;
    }
    .data-val {
      font-size: 24px;
      font-weight: 700;
      color: var(--primary-light);
    }
    .data-label {
      font-size: 13px;
      color: var(--text-dim);
      margin-top: 4px;
    }

    /* 预约与实测时段挂件 */
    .hero-booking-panel {
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: 0 16px 36px rgba(0,0,0,0.4);
      backdrop-filter: blur(14px);
    }
    .booking-head {
      margin-bottom: 18px;
    }
    .booking-head h3 {
      font-size: 18px;
      color: #fff;
    }
    .booking-head p {
      font-size: 13px;
      color: var(--text-muted);
    }
    .form-group-item {
      margin-bottom: 14px;
    }
    .form-group-item label {
      display: block;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 6px;
    }
    .select-input, .text-input {
      width: 100%;
      padding: 11px 14px;
      background: rgba(10, 15, 29, 0.8);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-sm);
      color: #fff;
      font-size: 14px;
      outline: none;
    }
    .select-input:focus, .text-input:focus {
      border-color: var(--primary-light);
    }
    .submit-glow-btn {
      width: 100%;
      padding: 13px;
      background: linear-gradient(135deg, #0284c7 0%, #024e7a 100%);
      border: 1px solid var(--primary-light);
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: var(--accent-glow);
      margin-top: 10px;
    }
    .submit-glow-btn:hover {
      box-shadow: 0 0 22px rgba(56, 189, 248, 0.8);
    }

    /* 章节通用样式 */
    .section-wrap {
      padding: 70px 0;
      border-bottom: 1px solid rgba(56, 189, 248, 0.1);
    }
    .section-alt {
      background: rgba(13, 20, 36, 0.65);
    }
    .section-header-row {
      margin-bottom: 40px;
    }
    .section-badge {
      font-size: 12px;
      letter-spacing: 1px;
      color: var(--primary-light);
      text-transform: uppercase;
      margin-bottom: 6px;
      font-weight: 700;
    }
    .section-header-row h2 {
      font-size: 28px;
      color: #fff;
      margin-bottom: 10px;
    }
    .section-header-row p {
      color: var(--text-muted);
      font-size: 15px;
      max-width: 720px;
    }

    /* 面料纤维解析卡片 */
    .feature-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: transform 0.25s ease, border-color 0.25s ease;
    }
    .feature-card:hover {
      transform: translateY(-4px);
      border-color: var(--border-glow);
    }
    .card-num {
      display: inline-block;
      font-size: 14px;
      font-weight: 800;
      color: var(--primary-light);
      background: rgba(56, 189, 248, 0.1);
      padding: 3px 10px;
      border-radius: 4px;
      margin-bottom: 14px;
    }
    .feature-card h3 {
      font-size: 18px;
      color: #fff;
      margin-bottom: 12px;
    }
    .feature-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 图文对比区块 */
    .media-compare-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }
    .compare-img-box {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-line);
      position: relative;
    }
    .compare-img-box img {
      width: 100%;
      height: 340px;
      object-fit: cover;
    }
    .compare-info h3 {
      font-size: 24px;
      color: #fff;
      margin-bottom: 16px;
    }
    .compare-info p {
      color: var(--text-muted);
      font-size: 15px;
      margin-bottom: 20px;
      line-height: 1.8;
    }
    .check-list-group {
      list-style: none;
    }
    .check-list-group li {
      position: relative;
      padding-left: 24px;
      margin-bottom: 12px;
      font-size: 14px;
      color: var(--text-main);
    }
    .check-list-group li::before {
      content: "✓";
      position: absolute;
      left: 0;
      color: var(--primary-light);
      font-weight: bold;
    }

    /* 实验室克重与测试表格 */
    .spec-table-box {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      overflow: hidden;
    }
    .spec-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .spec-table th, .spec-table td {
      padding: 16px 20px;
      font-size: 14px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .spec-table th {
      background: rgba(2, 132, 199, 0.15);
      color: #fff;
      font-weight: 600;
    }
    .spec-table td {
      color: var(--text-muted);
    }
    .spec-table tr:hover td {
      background: rgba(56, 189, 248, 0.04);
      color: var(--text-main);
    }

    /* 亲肤舒适度对比卡 */
    .metric-grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .metric-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-sm);
      padding: 22px 18px;
    }
    .metric-name {
      font-size: 14px;
      color: var(--text-dim);
      margin-bottom: 8px;
    }
    .metric-score {
      font-size: 26px;
      font-weight: 800;
      color: var(--primary-light);
      margin-bottom: 10px;
    }
    .metric-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 常见体验疑问卡 */
    .faq-grid-2 {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .faq-card-box {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-sm);
      padding: 22px;
    }
    .faq-card-box h4 {
      font-size: 16px;
      color: #fff;
      margin-bottom: 10px;
    }
    .faq-card-box p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 转换行动收口 */
    .action-banner {
      background: linear-gradient(135deg, rgba(2, 132, 199, 0.25) 0%, rgba(10, 15, 29, 0.8) 100%),
                  url('/assets/images/2d0d6ba70fb56bae.webp') center/cover;
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-lg);
      padding: 48px;
      text-align: center;
      margin: 40px 0 20px;
    }
    .action-banner h3 {
      font-size: 28px;
      color: #fff;
      margin-bottom: 14px;
    }
    .action-banner p {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 650px;
      margin: 0 auto 28px;
    }
    .action-btns-group {
      display: flex;
      justify-content: center;
      gap: 16px;
    }
    .btn-main-glow {
      display: inline-block;
      padding: 12px 28px;
      background: var(--primary);
      color: #fff;
      font-weight: 600;
      border-radius: var(--radius-sm);
      box-shadow: var(--accent-glow);
    }
    .btn-main-glow:hover {
      background: var(--primary-light);
      color: #000;
    }
    .btn-ghost-border {
      display: inline-block;
      padding: 12px 28px;
      border: 1px solid var(--border-line);
      color: var(--text-main);
      border-radius: var(--radius-sm);
    }
    .btn-ghost-border:hover {
      border-color: var(--primary-light);
      color: #fff;
    }

    /* 页脚统一规范 */
    .site-footer {
      background: #060913;
      border-top: 1px solid var(--border-line);
      padding: 60px 0 30px;
      font-size: 14px;
      color: var(--text-muted);
      margin-top: 40px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand h4 {
      color: #fff;
      font-size: 18px;
      margin-bottom: 14px;
    }
    .footer-brand p {
      line-height: 1.8;
      font-size: 14px;
    }
    .footer-links-col h5 {
      color: #fff;
      font-size: 15px;
      margin-bottom: 16px;
    }
    .footer-links-col ul {
      list-style: none;
    }
    .footer-links-col li {
      margin-bottom: 10px;
    }
    .footer-links-col a {
      color: var(--text-muted);
    }
    .footer-links-col a:hover {
      color: var(--primary-light);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 13px;
      color: var(--text-dim);
    }

    @media (max-width: 1024px) {
      .hero-split {
        grid-template-columns: 1fr;
      }
      .media-compare-row {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .feature-grid-3, .metric-grid-4, .faq-grid-2 {
        grid-template-columns: 1fr;
      }
      .main-nav {
        display: none;
      }
      .action-banner {
        padding: 30px 20px;
      }
      .action-btns-group {
        flex-direction: column;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }

/* roulang page: category2 */
:root {
      --bg-dark: #0a0f1d;
      --bg-surface: #10182b;
      --bg-card: rgba(18, 28, 51, 0.72);
      --bg-card-hover: rgba(26, 40, 71, 0.88);
      --border-line: rgba(56, 189, 248, 0.18);
      --border-glow: rgba(56, 189, 248, 0.45);
      --text-main: #f1f5f9;
      --text-muted: #94a3b8;
      --text-dim: #64748b;
      --primary: #0284c7;
      --primary-light: #38bdf8;
      --accent: #0ea5e9;
      --accent-glow: 0 0 25px rgba(56, 189, 248, 0.45);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-w: 1200px;
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.68;
      font-size: 16px;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }
    .container {
      width: 100%;
      max-width: var(--container-w);
      margin: 0 auto;
      padding: 0 24px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(10, 15, 29, 0.88);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-line);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }
    .brand-logo {
      font-size: 20px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #ffffff;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .brand-logo span {
      color: var(--primary-light);
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .nav-item {
      position: relative;
    }
    .nav-item > a {
      display: block;
      padding: 10px 16px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }
    .nav-item > a:hover,
    .nav-item > a.active {
      color: #ffffff;
      background: rgba(56, 189, 248, 0.12);
    }
    .dropdown-menu-custom {
      display: none;
      position: absolute;
      top: 100%;
      left: 0;
      min-width: 200px;
      background: var(--bg-surface);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-sm);
      padding: 8px;
      box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    }
    .dropdown-menu-custom a {
      display: block;
      padding: 8px 12px;
      font-size: 13px;
      color: var(--text-muted);
      border-radius: 4px;
    }
    .dropdown-menu-custom a:hover {
      background: rgba(56, 189, 248, 0.15);
      color: var(--primary-light);
    }
    .nav-item:hover .dropdown-menu-custom {
      display: block;
    }
    .header-cta-btn {
      padding: 9px 20px;
      background: linear-gradient(135deg, var(--primary) 0%, #0369a1 100%);
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      box-shadow: var(--accent-glow);
      border: 1px solid rgba(255, 255, 255, 0.15);
      white-space: nowrap;
    }
    .header-cta-btn:hover {
      box-shadow: 0 0 20px rgba(56, 189, 248, 0.7);
      transform: translateY(-1px);
      color: #ffffff;
    }
    .page-hero {
      position: relative;
      padding: 100px 0 90px;
      background-image: linear-gradient(to bottom, rgba(10, 15, 29, 0.75), rgba(10, 15, 29, 0.95)), url('/assets/images/9f8186ba31b61649.jpg');
      background-size: cover;
      background-position: center;
      border-bottom: 1px solid var(--border-line);
      overflow: hidden;
    }
    .video-mockup-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: rgba(56, 189, 248, 0.12);
      border: 1px solid var(--border-glow);
      border-radius: 999px;
      font-size: 13px;
      color: var(--primary-light);
      margin-bottom: 24px;
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      background: var(--primary-light);
      border-radius: 50%;
      box-shadow: 0 0 10px var(--primary-light);
    }
    .page-hero h1 {
      font-size: 40px;
      font-weight: 800;
      color: #ffffff;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .page-hero p.lead {
      font-size: 17px;
      color: var(--text-muted);
      line-height: 1.8;
      max-width: 840px;
      margin-bottom: 35px;
    }
    .hero-action-group {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 18px;
    }
    .btn-glow {
      padding: 13px 28px;
      background: linear-gradient(135deg, #0284c7, #0ea5e9);
      color: #ffffff;
      font-weight: 600;
      border-radius: var(--radius-sm);
      box-shadow: var(--accent-glow);
      border: 1px solid rgba(255, 255, 255, 0.2);
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }
    .btn-glow:hover {
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 0 30px rgba(56, 189, 248, 0.7);
    }
    .btn-ghost {
      padding: 13px 26px;
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-main);
      font-weight: 500;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-line);
      backdrop-filter: blur(10px);
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }
    .btn-ghost:hover {
      color: #ffffff;
      background: rgba(255, 255, 255, 0.08);
      border-color: var(--primary-light);
    }
    .play-icon-box {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #060b19;
      font-size: 11px;
    }
    .content-section {
      padding: 85px 0;
      position: relative;
    }
    .section-alt {
      background: var(--bg-surface);
      border-top: 1px solid var(--border-line);
      border-bottom: 1px solid var(--border-line);
    }
    .section-header {
      margin-bottom: 50px;
    }
    .section-header .sub-badge {
      font-size: 12px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: var(--primary-light);
      margin-bottom: 10px;
      display: block;
    }
    .section-header h2 {
      font-size: 30px;
      font-weight: 700;
      color: #ffffff;
      letter-spacing: -0.5px;
      margin-bottom: 14px;
    }
    .section-header p {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 700px;
      margin: 0;
    }
    .glass-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 28px;
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      height: 100%;
      transition: all 0.3s ease;
    }
    .glass-card:hover {
      background: var(--bg-card-hover);
      border-color: var(--border-glow);
      transform: translateY(-4px);
    }
    .glass-card .card-thumb {
      border-radius: var(--radius-sm);
      overflow: hidden;
      margin-bottom: 20px;
      height: 190px;
      position: relative;
    }
    .glass-card .card-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .glass-card:hover .card-thumb img {
      transform: scale(1.05);
    }
    .glass-card h3 {
      font-size: 19px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 12px;
    }
    .glass-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 18px;
    }
    .spec-tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .spec-tag-list li {
      font-size: 12px;
      padding: 4px 10px;
      background: rgba(56, 189, 248, 0.08);
      border: 1px solid rgba(56, 189, 248, 0.2);
      border-radius: 4px;
      color: var(--primary-light);
    }
    .metric-panel {
      background: rgba(14, 23, 42, 0.85);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 30px;
      backdrop-filter: blur(20px);
    }
    .metric-item {
      padding: 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .metric-item:last-child {
      border-bottom: none;
    }
    .metric-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 10px;
    }
    .metric-name {
      font-size: 15px;
      font-weight: 600;
      color: #ffffff;
    }
    .metric-value {
      font-size: 14px;
      font-weight: 700;
      color: var(--primary-light);
    }
    .progress-track {
      height: 6px;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 999px;
      overflow: hidden;
    }
    .progress-fill {
      height: 100%;
      background: linear-gradient(90deg, #0284c7, #38bdf8);
      border-radius: 999px;
    }
    .comparison-table-wrapper {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      overflow-x: auto;
      padding: 10px;
      backdrop-filter: blur(16px);
    }
    .table-custom {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      color: var(--text-main);
      font-size: 14px;
    }
    .table-custom th {
      background: rgba(56, 189, 248, 0.06);
      color: #ffffff;
      padding: 16px;
      text-align: left;
      font-weight: 600;
      border-bottom: 1px solid var(--border-line);
    }
    .table-custom td {
      padding: 16px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      color: var(--text-muted);
    }
    .table-custom tr:last-child td {
      border-bottom: none;
    }
    .table-custom tr:hover td {
      background: rgba(255, 255, 255, 0.02);
      color: #ffffff;
    }
    .timeline-item {
      position: relative;
      padding-left: 32px;
      margin-bottom: 30px;
    }
    .timeline-item::before {
      content: '';
      position: absolute;
      left: 7px;
      top: 6px;
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--primary-light);
      box-shadow: 0 0 10px var(--primary-light);
    }
    .timeline-item::after {
      content: '';
      position: absolute;
      left: 11px;
      top: 22px;
      width: 2px;
      height: calc(100% - 10px);
      background: rgba(56, 189, 248, 0.2);
    }
    .timeline-item:last-child::after {
      display: none;
    }
    .timeline-item h4 {
      font-size: 16px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 6px;
    }
    .timeline-item p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin: 0;
    }
    .cta-card {
      background: linear-gradient(135deg, rgba(14, 23, 42, 0.95), rgba(2, 132, 199, 0.25));
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-lg);
      padding: 50px;
      box-shadow: var(--accent-glow);
      text-align: center;
      position: relative;
      overflow: hidden;
    }
    .cta-card h3 {
      font-size: 28px;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 14px;
    }
    .cta-card p {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 600px;
      margin: 0 auto 30px;
    }
    .site-footer {
      background: #060a14;
      border-top: 1px solid var(--border-line);
      padding: 60px 0 30px;
      color: var(--text-muted);
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand h4 {
      color: #ffffff;
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 14px;
    }
    .footer-brand p {
      font-size: 13px;
      line-height: 1.7;
      color: var(--text-dim);
    }
    .footer-links-col h5 {
      color: #ffffff;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 14px;
    }
    .footer-links-col ul {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links-col li {
      margin-bottom: 8px;
    }
    .footer-links-col a {
      color: var(--text-muted);
    }
    .footer-links-col a:hover {
      color: var(--primary-light);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 25px;
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 15px;
      font-size: 13px;
      color: var(--text-dim);
    }
    @media (max-width: 991px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .main-nav {
        display: none;
      }
    }
    @media (max-width: 767px) {
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .page-hero h1 {
        font-size: 28px;
      }
      .section-header h2 {
        font-size: 24px;
      }
      .cta-card {
        padding: 30px 20px;
      }
    }

/* roulang page: category4 */
:root {
      --bg-dark: #0a0f1d;
      --bg-surface: #10182b;
      --bg-card: rgba(18, 28, 51, 0.72);
      --bg-card-hover: rgba(26, 40, 71, 0.88);
      --border-line: rgba(56, 189, 248, 0.18);
      --border-glow: rgba(56, 189, 248, 0.45);
      --text-main: #f1f5f9;
      --text-muted: #94a3b8;
      --text-dim: #64748b;
      --primary: #0284c7;
      --primary-light: #38bdf8;
      --accent: #0ea5e9;
      --accent-glow: 0 0 25px rgba(56, 189, 248, 0.45);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-w: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.68;
      font-size: 16px;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }
    .container {
      width: 100%;
      max-width: var(--container-w);
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(10, 15, 29, 0.82);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-line);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }
    .brand-logo {
      font-size: 20px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #ffffff;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .brand-logo span {
      color: var(--primary-light);
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .nav-item {
      position: relative;
    }
    .nav-item > a {
      display: block;
      padding: 10px 14px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }
    .nav-item > a:hover,
    .nav-item > a.active {
      color: #ffffff;
      background: rgba(56, 189, 248, 0.08);
    }
    .header-cta-btn {
      padding: 9px 20px;
      background: linear-gradient(135deg, var(--primary) 0%, #0369a1 100%);
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      box-shadow: var(--accent-glow);
      border: 1px solid rgba(255, 255, 255, 0.15);
      cursor: pointer;
    }
    .header-cta-btn:hover {
      box-shadow: 0 0 20px rgba(56, 189, 248, 0.7);
      transform: translateY(-1px);
    }

    /* 促销主视觉 Hero */
    .promo-hero {
      position: relative;
      padding: 70px 0 60px;
      background-image: linear-gradient(180deg, rgba(10, 15, 29, 0.88), rgba(10, 15, 29, 0.98)), url('/assets/images/2d0d6ba70fb56bae.webp');
      background-size: cover;
      background-position: center;
      border-bottom: 1px solid var(--border-line);
    }
    .hero-layout {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }
    .promo-badge-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }
    .badge-burst {
      display: inline-block;
      padding: 4px 12px;
      background: #ef4444;
      color: #ffffff;
      font-size: 12px;
      font-weight: 800;
      border-radius: 4px;
      transform: rotate(-3deg);
      box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
      letter-spacing: 0.5px;
    }
    .badge-soft {
      font-size: 13px;
      color: var(--primary-light);
      background: rgba(56, 189, 248, 0.1);
      border: 1px solid rgba(56, 189, 248, 0.25);
      padding: 3px 10px;
      border-radius: 999px;
    }
    .promo-hero h1 {
      font-size: 34px;
      line-height: 1.3;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 18px;
    }
    .promo-hero p {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .hero-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn-glow-primary {
      padding: 12px 28px;
      background: linear-gradient(135deg, #0ea5e9, #0284c7);
      color: #ffffff;
      font-weight: 700;
      font-size: 15px;
      border-radius: var(--radius-sm);
      box-shadow: 0 0 25px rgba(14, 165, 233, 0.5);
      border: 1px solid rgba(255, 255, 255, 0.2);
      display: inline-block;
    }
    .btn-glow-primary:hover {
      box-shadow: 0 0 35px rgba(56, 189, 248, 0.8);
      transform: translateY(-2px);
    }
    .btn-outline {
      padding: 12px 24px;
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-main);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 600;
      display: inline-block;
    }
    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: var(--primary-light);
    }
    .hero-glass-box {
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-lg);
      padding: 28px;
      backdrop-filter: blur(16px);
      box-shadow: 0 20px 45px rgba(0, 0, 0, 0.45);
    }
    .hero-stat-row {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 20px;
    }
    .hero-stat-card {
      background: rgba(255, 255, 255, 0.03);
      padding: 14px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.06);
    }
    .hero-stat-card .num {
      font-size: 24px;
      font-weight: 800;
      color: var(--primary-light);
    }
    .hero-stat-card .desc {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 板块通用 */
    .section-block {
      padding: 70px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .section-block:nth-child(even) {
      background: var(--bg-surface);
    }
    .section-header-left {
      margin-bottom: 36px;
    }
    .section-tag {
      font-size: 13px;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: var(--primary-light);
      font-weight: 700;
      display: block;
      margin-bottom: 8px;
    }
    .section-title {
      font-size: 28px;
      font-weight: 800;
      color: #ffffff;
      line-height: 1.35;
      margin-bottom: 12px;
    }
    .section-summary {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 820px;
      line-height: 1.7;
    }

    /* 板块1：核心价值与实测主张 */
    .values-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 30px;
      align-items: center;
    }
    .values-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .value-item {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 20px;
      transition: all 0.3s;
    }
    .value-item:hover {
      border-color: var(--border-glow);
      transform: translateX(4px);
      background: var(--bg-card-hover);
    }
    .value-item h3 {
      font-size: 18px;
      color: #ffffff;
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .value-item p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .visual-banner {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-line);
      position: relative;
    }
    .visual-banner img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    /* 板块2：体感功能分组 */
    .feature-group-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
      overflow: hidden;
    }
    .feature-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: var(--primary);
    }
    .feature-card h3 {
      font-size: 18px;
      color: #ffffff;
      margin-bottom: 12px;
    }
    .feature-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
    }
    .feature-meta-list {
      list-style: none;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 12px;
    }
    .feature-meta-list li {
      font-size: 13px;
      color: var(--text-dim);
      display: flex;
      justify-content: space-between;
      margin-bottom: 6px;
    }
    .feature-meta-list li span {
      color: var(--primary-light);
    }

    /* 板块3：身高体重体型矩阵 (数据化展示) */
    .table-container {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 24px;
      overflow-x: auto;
    }
    .data-matrix {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .data-matrix th, .data-matrix td {
      padding: 14px 18px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 14px;
    }
    .data-matrix th {
      color: var(--primary-light);
      font-weight: 700;
      background: rgba(255, 255, 255, 0.02);
    }
    .data-matrix td {
      color: var(--text-muted);
    }
    .data-matrix tr:hover td {
      background: rgba(56, 189, 248, 0.04);
      color: #ffffff;
    }
    .pill-tag {
      padding: 2px 8px;
      background: rgba(2, 132, 199, 0.2);
      border: 1px solid var(--primary);
      border-radius: 4px;
      font-size: 12px;
      color: #ffffff;
    }

    /* 板块4：多场景实测体验 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }
    .scenario-item {
      display: flex;
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      overflow: hidden;
    }
    .scenario-img {
      width: 42%;
      min-height: 200px;
    }
    .scenario-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .scenario-content {
      width: 58%;
      padding: 20px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .scenario-content h3 {
      font-size: 17px;
      color: #ffffff;
      margin-bottom: 8px;
    }
    .scenario-content p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块5：洗涤护养与形变追踪 */
    .wash-track-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .wash-step-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 20px;
      text-align: center;
    }
    .wash-step-badge {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: rgba(56, 189, 248, 0.15);
      border: 1px solid var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 14px;
      font-weight: 700;
      color: var(--primary-light);
    }
    .wash-step-card h4 {
      font-size: 16px;
      color: #ffffff;
      margin-bottom: 8px;
    }
    .wash-step-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块6：真实穿着测评反馈 */
    .feedback-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feedback-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 22px;
      position: relative;
    }
    .feedback-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
    }
    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #1e293b;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      font-weight: bold;
      color: var(--primary-light);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .user-info .name {
      font-size: 15px;
      font-weight: 700;
      color: #ffffff;
    }
    .user-info .meta {
      font-size: 12px;
      color: var(--text-dim);
    }
    .feedback-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .score-stars {
      color: #f59e0b;
      font-size: 13px;
      margin-bottom: 8px;
    }

    /* 板块7：选购与体感速答 FAQ */
    .faq-wrapper {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 22px;
    }
    .faq-card h3 {
      font-size: 17px;
      color: #ffffff;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .faq-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块8：底端转化与实测报告索取 */
    .cta-conversion-box {
      background: linear-gradient(135deg, rgba(14, 165, 233, 0.15) 0%, rgba(2, 132, 199, 0.05) 100%);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-lg);
      padding: 44px;
      text-align: center;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
      position: relative;
      overflow: hidden;
    }
    .cta-conversion-box h2 {
      font-size: 26px;
      color: #ffffff;
      margin-bottom: 12px;
    }
    .cta-conversion-box p {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 650px;
      margin: 0 auto 28px;
    }
    .form-inline {
      display: flex;
      justify-content: center;
      gap: 12px;
      max-width: 520px;
      margin: 0 auto;
    }
    .form-input {
      flex: 1;
      padding: 12px 18px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-line);
      background: rgba(10, 15, 29, 0.8);
      color: #ffffff;
      outline: none;
      font-size: 14px;
    }
    .form-input:focus {
      border-color: var(--primary-light);
      box-shadow: 0 0 10px rgba(56, 189, 248, 0.3);
    }
    .form-submit-btn {
      padding: 12px 24px;
      background: var(--primary);
      border: none;
      color: #fff;
      font-size: 14px;
      font-weight: 700;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: var(--accent-glow);
    }
    .form-submit-btn:hover {
      background: #0284c7;
      box-shadow: 0 0 20px rgba(56, 189, 248, 0.6);
    }

    /* 页脚 */
    .site-footer {
      background: #060a14;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 60px 0 30px;
      margin-top: 40px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand h4 {
      font-size: 18px;
      color: #ffffff;
      margin-bottom: 14px;
      font-weight: 800;
    }
    .footer-brand p {
      font-size: 14px;
      color: var(--text-dim);
      line-height: 1.7;
    }
    .footer-links-col h5 {
      font-size: 15px;
      color: #ffffff;
      margin-bottom: 16px;
      font-weight: 600;
    }
    .footer-links-col ul {
      list-style: none;
    }
    .footer-links-col li {
      margin-bottom: 10px;
    }
    .footer-links-col a {
      font-size: 14px;
      color: var(--text-muted);
    }
    .footer-links-col a:hover {
      color: var(--primary-light);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: var(--text-dim);
    }

    /* 移动端响应式 */
    @media (max-width: 1024px) {
      .hero-layout {
        grid-template-columns: 1fr;
      }
      .values-grid {
        grid-template-columns: 1fr;
      }
      .feature-group-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .main-nav {
        display: none;
      }
      .feature-group-grid {
        grid-template-columns: 1fr;
      }
      .scenario-grid {
        grid-template-columns: 1fr;
      }
      .wash-track-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .feedback-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
      }
      .form-inline {
        flex-direction: column;
      }
    }

/* roulang page: category3 */
:root {
            --bg-dark: #0a0f1d;
            --bg-surface: #10182b;
            --bg-card: rgba(18, 28, 51, 0.72);
            --bg-card-hover: rgba(26, 40, 71, 0.88);
            --border-line: rgba(56, 189, 248, 0.18);
            --border-glow: rgba(56, 189, 248, 0.45);
            --text-main: #f1f5f9;
            --text-muted: #94a3b8;
            --text-dim: #64748b;
            --primary: #0284c7;
            --primary-light: #38bdf8;
            --accent: #0ea5e9;
            --accent-glow: 0 0 25px rgba(56, 189, 248, 0.45);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --container-w: 1200px;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            background-color: var(--bg-dark);
            color: var(--text-main);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            line-height: 1.68;
            font-size: 16px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
        }
        .container {
            width: 100%;
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 15, 29, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-line);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 74px;
        }
        .brand-logo {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #ffffff;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .brand-logo span {
            color: var(--primary-light);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-item {
            position: relative;
        }
        .nav-item > a {
            display: block;
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: var(--radius-sm);
        }
        .nav-item > a:hover, .nav-item > a.active {
            color: #ffffff;
            background: rgba(56, 189, 248, 0.12);
        }
        .dropdown-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 210px;
            background: var(--bg-surface);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-md);
            padding: 8px;
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5);
            z-index: 50;
        }
        .nav-item:hover .dropdown-menu {
            display: block;
        }
        .dropdown-menu a {
            display: block;
            padding: 9px 14px;
            font-size: 14px;
            color: var(--text-muted);
            border-radius: var(--radius-sm);
        }
        .dropdown-menu a:hover {
            background: rgba(56, 189, 248, 0.12);
            color: var(--primary-light);
        }
        .header-cta-btn {
            padding: 9px 20px;
            background: linear-gradient(135deg, var(--primary) 0%, #0369a1 100%);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            box-shadow: var(--accent-glow);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .header-cta-btn:hover {
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.7);
            transform: translateY(-1px);
        }

        /* Hero 评估问卷视觉 */
        .eval-hero-section {
            padding: 70px 0 90px;
            background: radial-gradient(circle at 80% 20%, rgba(2, 132, 199, 0.15), transparent 50%), linear-gradient(180deg, #0a0f1d 0%, #0c1427 100%);
            border-bottom: 1px solid var(--border-line);
        }
        .eval-hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 40px;
            align-items: center;
        }
        .eval-hero-text h1 {
            font-size: 36px;
            line-height: 1.3;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 18px;
        }
        .eval-hero-text h1 span {
            color: var(--primary-light);
            text-shadow: 0 0 15px rgba(56, 189, 248, 0.4);
        }
        .eval-hero-text p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .hero-tags span {
            padding: 5px 12px;
            background: rgba(56, 189, 248, 0.08);
            border: 1px solid var(--border-line);
            border-radius: 999px;
            font-size: 13px;
            color: var(--primary-light);
        }
        .quiz-panel-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 30px;
            backdrop-filter: blur(20px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45);
        }
        .quiz-title-bar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding-bottom: 12px;
            margin-bottom: 20px;
        }
        .quiz-title-bar h3 {
            font-size: 18px;
            color: #ffffff;
        }
        .quiz-title-bar .badge {
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            padding: 2px 10px;
            border-radius: 999px;
        }
        .quiz-item {
            margin-bottom: 16px;
        }
        .quiz-item label {
            display: block;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .quiz-options-group {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 8px;
        }
        .quiz-opt-btn {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-main);
            padding: 8px 10px;
            border-radius: var(--radius-sm);
            font-size: 13px;
            cursor: pointer;
            text-align: center;
            transition: all 0.2s ease;
        }
        .quiz-opt-btn.active, .quiz-opt-btn:hover {
            border-color: var(--primary-light);
            background: rgba(56, 189, 248, 0.15);
            color: #fff;
        }
        .quiz-preview-result {
            margin-top: 20px;
            padding: 14px;
            background: rgba(2, 132, 199, 0.12);
            border-left: 3px solid var(--primary-light);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-size: 13px;
            color: var(--text-main);
        }
        .quiz-btn-action {
            display: block;
            width: 100%;
            margin-top: 18px;
            text-align: center;
            padding: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-weight: 600;
            border-radius: var(--radius-sm);
            box-shadow: 0 0 15px rgba(56, 189, 248, 0.4);
        }
        .quiz-btn-action:hover {
            box-shadow: 0 0 25px rgba(56, 189, 248, 0.7);
        }

        /* 统一分块容器 */
        .page-block {
            padding: 70px 0;
            border-bottom: 1px solid rgba(56, 189, 248, 0.1);
        }
        .page-block.alt-bg {
            background: var(--bg-surface);
        }
        .block-header-wrap {
            margin-bottom: 40px;
        }
        .block-eyebrow {
            display: inline-block;
            font-size: 13px;
            color: var(--primary-light);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 8px;
        }
        .block-heading {
            font-size: 28px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }
        .block-desc {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 780px;
        }

        /* 通勤体感分栏 */
        .commute-layout-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
        }
        .commute-img-box {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-line);
        }
        .commute-img-box img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }
        .commute-overlay-tag {
            position: absolute;
            bottom: 16px;
            left: 16px;
            background: rgba(10, 15, 29, 0.85);
            backdrop-filter: blur(8px);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-line);
            font-size: 13px;
            color: var(--primary-light);
        }
        .commute-data-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .commute-data-card {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-md);
            padding: 20px;
        }
        .commute-data-card h4 {
            font-size: 17px;
            color: #fff;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .commute-data-card h4 span {
            color: var(--primary-light);
            font-size: 14px;
        }
        .commute-data-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 居家与伸展场景对标 */
        .home-dual-matrix {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .matrix-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-lg);
            padding: 30px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .matrix-panel-head {
            margin-bottom: 20px;
        }
        .matrix-panel-head .scenario-badge {
            display: inline-block;
            font-size: 12px;
            padding: 4px 10px;
            background: rgba(56, 189, 248, 0.12);
            color: var(--primary-light);
            border-radius: 4px;
            margin-bottom: 10px;
        }
        .matrix-panel-head h3 {
            font-size: 20px;
            color: #fff;
        }
        .matrix-points-list {
            list-style: none;
            margin-bottom: 24px;
        }
        .matrix-points-list li {
            padding: 10px 0;
            border-bottom: 1px dashed rgba(255, 255, 255, 0.08);
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            justify-content: space-between;
        }
        .matrix-points-list li strong {
            color: var(--text-main);
        }
        .score-pill-row {
            display: flex;
            gap: 12px;
            align-items: center;
            background: rgba(255, 255, 255, 0.03);
            padding: 12px;
            border-radius: var(--radius-sm);
        }
        .score-label {
            font-size: 13px;
            color: var(--text-dim);
        }
        .score-value {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary-light);
        }

        /* 四季气温温区指南 */
        .season-temp-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .season-temp-card {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            transition: transform 0.25s ease, border-color 0.25s ease;
        }
        .season-temp-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-glow);
        }
        .temp-range-badge {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary-light);
            margin-bottom: 10px;
        }
        .season-temp-card h4 {
            font-size: 17px;
            color: #fff;
            margin-bottom: 10px;
        }
        .season-temp-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .comfort-star-tag {
            margin-top: 14px;
            font-size: 12px;
            display: inline-block;
            padding: 3px 8px;
            background: rgba(2, 132, 199, 0.15);
            color: var(--primary-light);
            border-radius: 4px;
        }

        /* 实测参数雷达对比表单区 */
        .metric-radar-table-box {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-lg);
            overflow: hidden;
        }
        .custom-metric-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
        }
        .custom-metric-table th, .custom-metric-table td {
            padding: 16px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 14px;
        }
        .custom-metric-table th {
            background: rgba(16, 24, 43, 0.85);
            color: var(--text-main);
            font-weight: 600;
        }
        .custom-metric-table td {
            color: var(--text-muted);
        }
        .custom-metric-table tr:hover td {
            background: rgba(56, 189, 248, 0.04);
            color: var(--text-main);
        }
        .custom-metric-table .highlight-col {
            color: var(--primary-light);
            font-weight: 600;
        }

        /* 真实穿着测评案例流 */
        .reviews-stream-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .review-stream-item {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .review-stream-item:hover {
            border-color: var(--border-glow);
        }
        .reviewer-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }
        .reviewer-avatar-placeholder {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, #0284c7, #0f172a);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: #fff;
            border: 1px solid var(--border-line);
        }
        .reviewer-info h5 {
            font-size: 14px;
            color: #fff;
        }
        .reviewer-info span {
            font-size: 12px;
            color: var(--text-dim);
        }
        .review-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .review-scene-tag {
            font-size: 12px;
            color: var(--primary-light);
            background: rgba(56, 189, 248, 0.08);
            padding: 3px 8px;
            border-radius: 4px;
            align-self: flex-start;
        }

        /* 转化预约表单收口 */
        .convert-section-wrap {
            background: radial-gradient(circle at center, rgba(2, 132, 199, 0.22), transparent 70%), var(--bg-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-glow);
            padding: 50px 40px;
            text-align: center;
            margin-bottom: 80px;
            margin-top: 40px;
        }
        .convert-section-wrap h3 {
            font-size: 28px;
            color: #fff;
            margin-bottom: 12px;
        }
        .convert-section-wrap p {
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 28px;
            font-size: 15px;
        }
        .apply-inline-form {
            display: flex;
            max-width: 520px;
            margin: 0 auto;
            gap: 10px;
        }
        .apply-inline-form input {
            flex: 1;
            padding: 12px 16px;
            background: rgba(10, 15, 29, 0.8);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 14px;
            outline: none;
        }
        .apply-inline-form input:focus {
            border-color: var(--primary-light);
            box-shadow: 0 0 10px rgba(56, 189, 248, 0.3);
        }
        .apply-inline-form button {
            padding: 12px 24px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-weight: 600;
            cursor: pointer;
            box-shadow: var(--accent-glow);
            white-space: nowrap;
        }
        .apply-inline-form button:hover {
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.8);
        }

        /* 页脚统一设计 */
        .site-footer {
            background: #060913;
            border-top: 1px solid var(--border-line);
            padding: 60px 0 30px;
            color: var(--text-muted);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h4 {
            font-size: 18px;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-links-col h5 {
            font-size: 15px;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links-col ul {
            list-style: none;
        }
        .footer-links-col li {
            margin-bottom: 10px;
        }
        .footer-links-col a {
            font-size: 14px;
            color: var(--text-muted);
        }
        .footer-links-col a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-dim);
            flex-wrap: wrap;
            gap: 12px;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .eval-hero-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .commute-layout-grid {
                grid-template-columns: 1fr;
            }
            .season-temp-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .reviews-stream-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .header-cta-btn {
                padding: 6px 14px;
                font-size: 13px;
            }
            .home-dual-matrix {
                grid-template-columns: 1fr;
            }
            .season-temp-strip {
                grid-template-columns: 1fr;
            }
            .reviews-stream-grid {
                grid-template-columns: 1fr;
            }
            .apply-inline-form {
                flex-direction: column;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}