/* roulang page: index */
/* 基础设计变量与主题系统 */
    :root {
      --primary: #0052D9;
      --primary-hover: #003CAB;
      --primary-light: #EBF3FF;
      --accent-green: #00A870;
      --accent-green-bg: #E8F8F2;
      --dark-bg: #0B192C;
      --dark-surface: #1E3E62;
      --bg-main: #F7F9FC;
      --card-bg: #FFFFFF;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 4px 6px -1px rgba(0, 82, 217, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-hover: 0 12px 24px -4px rgba(0, 82, 217, 0.14);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --container-max: 1240px;
    }

    /* 样式重置与全局字体 */
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button, input {
      font-family: inherit;
    }

    /* 布局容器 */
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶栏与黏性主导航 */
    .top-bar {
      background-color: #081220;
      color: #94A3B8;
      font-size: 0.8125rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 7px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #34D399;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background-color: #34D399;
      border-radius: 50%;
      box-shadow: 0 0 8px #34D399;
    }
    .main-header {
      position: sticky;
      top: 0;
      z-index: 900;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .site-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .logo-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary) 0%, #0084FF 100%);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.1rem;
      font-weight: bold;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 28px;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: #334155;
      position: relative;
      padding: 6px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 100%;
      height: 2.5px;
      background-color: var(--primary);
      border-radius: 2px;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    /* 按钮通用规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 22px;
      font-size: 0.925rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.25s ease;
      white-space: nowrap;
      border: 1px solid transparent;
      min-height: 42px;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #ffffff;
      box-shadow: 0 4px 10px rgba(0, 82, 217, 0.25);
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      box-shadow: 0 6px 14px rgba(0, 82, 217, 0.35);
      transform: translateY(-1px);
    }
    .btn-outline {
      background: transparent;
      border-color: var(--border-color);
      color: var(--text-main);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: var(--primary-light);
    }
    .btn-white {
      background-color: #ffffff;
      color: var(--primary);
    }
    .btn-white:hover {
      background-color: #f1f5f9;
      transform: translateY(-1px);
    }
    .btn-green {
      background-color: var(--accent-green);
      color: #ffffff;
    }
    .btn-green:hover {
      background-color: #008f5d;
    }

    /* 移动端菜单切换按钮 */
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }
    .mobile-toggle span {
      display: block;
      width: 24px;
      height: 2.5px;
      background-color: #1E293B;
      margin: 5px 0;
      transition: 0.3s;
    }

    /* 板块通用间距与标题 */
    .section-wrap {
      padding: 80px 0;
    }
    .section-wrap-light {
      background-color: #ffffff;
    }
    .section-wrap-muted {
      background-color: var(--bg-main);
    }
    .section-wrap-dark {
      background: linear-gradient(135deg, #0B192C 0%, #152B44 100%);
      color: #ffffff;
    }
    .section-header {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 52px auto;
    }
    .section-tag {
      display: inline-block;
      padding: 5px 14px;
      background-color: var(--primary-light);
      color: var(--primary);
      font-size: 0.8125rem;
      font-weight: 700;
      border-radius: var(--radius-full);
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .section-tag-dark {
      background-color: rgba(0, 168, 112, 0.2);
      color: #34D399;
    }
    .section-title {
      font-size: clamp(1.65rem, 3vw, 2.25rem);
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .section-wrap-dark .section-title {
      color: #ffffff;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .section-wrap-dark .section-desc {
      color: #94A3B8;
    }

    /* 1. 首屏沉浸式海报与强转化 Hero */
    .hero-section {
      position: relative;
      background-image: linear-gradient(180deg, rgba(11, 25, 44, 0.88) 0%, rgba(15, 23, 42, 0.95) 100%), url('/assets/images/881f0471f1ca5386.png');
      background-size: cover;
      background-position: center;
      color: #ffffff;
      padding: 85px 0 100px 0;
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.2);
      padding: 6px 16px;
      border-radius: var(--radius-full);
      margin-bottom: 20px;
      font-size: 0.875rem;
    }
    .hero-badge-hot {
      background-color: #EF4444;
      color: #ffffff;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      font-size: 0.75rem;
      font-weight: 700;
    }
    .hero-title {
      font-size: clamp(2rem, 4.5vw, 3.25rem);
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      color: #ffffff;
      letter-spacing: -0.5px;
    }
    .hero-subtitle {
      font-size: 1.05rem;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 32px;
    }
    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }
    .hero-specs-row {
      display: flex;
      flex-wrap: wrap;
      gap: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.14);
      padding-top: 24px;
    }
    .hero-spec-item {
      display: flex;
      flex-direction: column;
    }
    .hero-spec-num {
      font-size: 1.45rem;
      font-weight: 800;
      color: #38BDF8;
    }
    .hero-spec-lbl {
      font-size: 0.8125rem;
      color: #94A3B8;
    }
    .hero-card-poster {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
      border: 1px solid rgba(255, 255, 255, 0.15);
      background: #000;
    }
    .hero-card-poster img {
      width: 100%;
      height: 380px;
      object-fit: cover;
      opacity: 0.9;
    }
    .hero-poster-floating {
      position: absolute;
      bottom: 20px;
      left: 20px;
      right: 20px;
      background: rgba(15, 23, 42, 0.88);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      padding: 16px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .floating-match-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: #fff;
    }
    .floating-match-meta {
      font-size: 0.8125rem;
      color: #94A3B8;
    }

    /* 2. 分类入口区 (沉浸式卡片) */
    .category-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .cat-card {
      background-color: var(--card-bg);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .cat-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary);
    }
    .cat-img-box {
      position: relative;
      height: 200px;
      overflow: hidden;
    }
    .cat-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .cat-card:hover .cat-img-box img {
      transform: scale(1.05);
    }
    .cat-badge {
      position: absolute;
      top: 12px;
      left: 12px;
      background-color: rgba(0, 0, 0, 0.7);
      color: #fff;
      font-size: 0.75rem;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      backdrop-filter: blur(4px);
    }
    .cat-content {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .cat-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .cat-desc {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      flex: 1;
    }
    .cat-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }

    /* 3. 架构与硬件技术编解码区 (图文错落双栏) */
    .arch-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .arch-visual {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-hover);
      border: 1px solid var(--border-color);
    }
    .arch-visual img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .arch-specs-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-top: 24px;
    }
    .arch-spec-row {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      background: #F8FAFC;
      padding: 14px 18px;
      border-radius: var(--radius-md);
      border-left: 3px solid var(--primary);
    }
    .arch-spec-label {
      font-weight: 700;
      font-size: 0.95rem;
      color: var(--text-main);
      min-width: 130px;
    }
    .arch-spec-detail {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 4. 核心优势六矩阵 */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .adv-card {
      background-color: var(--card-bg);
      padding: 30px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      transition: all 0.3s ease;
    }
    .adv-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary);
    }
    .adv-icon-wrap {
      width: 52px;
      height: 52px;
      background-color: var(--primary-light);
      color: var(--primary);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      font-weight: bold;
      margin-bottom: 20px;
    }
    .adv-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .adv-text {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 5. 深色高对比调度中心转折区 */
    .dispatch-board {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 36px;
    }
    .board-metric {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
    }
    .board-metric-val {
      font-size: 2.25rem;
      font-weight: 800;
      color: #38BDF8;
      margin-bottom: 8px;
    }
    .board-metric-title {
      font-size: 0.95rem;
      font-weight: 600;
      color: #E2E8F0;
      margin-bottom: 6px;
    }
    .board-metric-sub {
      font-size: 0.8125rem;
      color: #94A3B8;
    }

    /* 6. 直点播场景演示区 (四栏矩阵) */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }
    .scenario-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      padding: 26px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .scen-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--accent-green);
      background-color: var(--accent-green-bg);
      padding: 3px 8px;
      border-radius: var(--radius-sm);
      display: inline-block;
      width: fit-content;
      margin-bottom: 12px;
    }
    .scen-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .scen-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 7. 排行榜与焦点热度列表 */
    .ranking-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .rank-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .rank-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 12px;
      margin-bottom: 16px;
    }
    .rank-header h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .rank-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .rank-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.9rem;
    }
    .rank-num {
      width: 24px;
      height: 24px;
      border-radius: 4px;
      background: #F1F5F9;
      color: var(--text-muted);
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.8rem;
    }
    .rank-item:nth-child(1) .rank-num {
      background: #FEF3C7;
      color: #D97706;
    }
    .rank-item:nth-child(2) .rank-num {
      background: #E2E8F0;
      color: #475569;
    }
    .rank-item:nth-child(3) .rank-num {
      background: #FFEDD5;
      color: #C2410C;
    }
    .rank-title {
      flex: 1;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      font-weight: 500;
    }
    .rank-count {
      font-size: 0.8rem;
      color: #94A3B8;
    }

    /* 8. 标杆案例与运营数据 */
    .case-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
    }
    .case-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 32px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .case-client-row {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 16px;
    }
    .case-avatar {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }
    .case-author {
      font-weight: 700;
      font-size: 1rem;
    }
    .case-org {
      font-size: 0.825rem;
      color: var(--text-muted);
    }
    .case-quote {
      font-size: 0.95rem;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 24px;
      font-style: italic;
    }
    .case-stat-strip {
      display: flex;
      gap: 24px;
      background: #F8FAFC;
      padding: 16px;
      border-radius: var(--radius-md);
      border-top: 2px solid var(--primary);
    }
    .case-stat-val {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
    }
    .case-stat-tag {
      font-size: 0.775rem;
      color: var(--text-muted);
    }

    /* 9. 客户评价与多维口碑 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      padding: 26px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .stars-bar {
      color: #F59E0B;
      font-size: 0.9rem;
      margin-bottom: 12px;
      letter-spacing: 2px;
    }
    .review-text {
      font-size: 0.925rem;
      color: #334155;
      line-height: 1.65;
      margin-bottom: 18px;
    }
    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #F1F5F9;
      padding-top: 14px;
    }
    .reviewer-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.85rem;
      font-weight: 700;
      color: #475569;
    }
    .reviewer-name {
      font-size: 0.9rem;
      font-weight: 700;
    }
    .reviewer-role {
      font-size: 0.775rem;
      color: var(--text-muted);
    }

    /* 10. 传统架构 vs 本体育视频点播平台对比区 */
    .comparison-table-wrap {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow-x: auto;
      box-shadow: var(--shadow-md);
    }
    .comp-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.925rem;
    }
    .comp-table th, .comp-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
    }
    .comp-table th {
      background: #F8FAFC;
      font-weight: 700;
      color: var(--text-main);
    }
    .comp-table th.col-highlight {
      background: var(--primary-light);
      color: var(--primary);
    }
    .comp-table td.col-highlight {
      background: rgba(235, 243, 255, 0.4);
      font-weight: 600;
      color: var(--primary);
    }

    /* 11. 资讯证据内嵌列表 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .news-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .news-img {
      height: 180px;
      overflow: hidden;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-body {
      padding: 22px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .news-date {
      font-size: 0.775rem;
      color: #94A3B8;
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 10px;
      line-height: 1.4;
      color: var(--text-main);
    }
    .news-excerpt {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex: 1;
      margin-bottom: 16px;
    }

    /* 12. 常见问题手风琴 FAQ */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-summary {
      padding: 18px 24px;
      font-size: 1.025rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-summary::-webkit-details-marker {
      display: none;
    }
    .faq-summary::after {
      content: '+';
      font-size: 1.3rem;
      color: var(--primary);
      transition: transform 0.25s ease;
    }
    details[open] .faq-summary::after {
      content: '−';
    }
    .faq-content {
      padding: 0 24px 20px 24px;
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px solid #F1F5F9;
      padding-top: 14px;
    }

    /* 13. 保障条规范 */
    .guarantee-bar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .guarantee-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      gap: 16px;
      align-items: center;
      box-shadow: var(--shadow-sm);
    }
    .guar-icon {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: var(--accent-green-bg);
      color: var(--accent-green);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      flex-shrink: 0;
    }
    .guar-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .guar-sub {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 底部固定转化条 (Sticky Bar) */
    .sticky-cta-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      z-index: 800;
      background: rgba(11, 25, 44, 0.96);
      backdrop-filter: blur(10px);
      border-top: 1px solid rgba(255, 255, 255, 0.15);
      padding: 12px 0;
      box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.2);
    }
    .sticky-cta-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }
    .sticky-text {
      color: #ffffff;
      font-size: 0.95rem;
      font-weight: 600;
    }
    .sticky-sub {
      color: #94A3B8;
      font-size: 0.8125rem;
      margin-left: 10px;
    }

    /* 统一页脚 */
    .site-footer {
      background: #081220;
      color: #94A3B8;
      padding: 64px 0 32px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.875rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-logo {
      font-size: 1.25rem;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-desc {
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .footer-col h4 {
      font-size: 1rem;
      font-weight: 700;
      color: #F8FAFC;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: #ffffff;
      padding-left: 4px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8125rem;
    }

    /* 响应式媒体查询断点 */
    @media (max-width: 1024px) {
      .hero-grid, .arch-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .category-grid, .advantage-grid, .review-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .dispatch-board, .scenario-grid, .guarantee-bar-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
      }
    }
    @media (max-width: 768px) {
      .top-bar { display: none; }
      .mobile-toggle { display: block; }
      .nav-menu {
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px 24px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.05);
        display: none;
        gap: 16px;
        align-items: flex-start;
      }
      .nav-menu.open {
        display: flex;
      }
      .header-actions .btn {
        display: none;
      }
      .category-grid, .advantage-grid, .review-grid, .news-grid, .ranking-grid, .case-grid {
        grid-template-columns: 1fr;
      }
      .dispatch-board, .scenario-grid, .guarantee-bar-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
      .sticky-text {
        font-size: 0.85rem;
      }
      .sticky-sub {
        display: none;
      }
    }