/* roulang page: index */
:root {
      --primary: #0F172A;
      --secondary: #0E7490;
      --accent: #10B981;
      --accent-cyan: #06B6D4;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-dark: #0B0F17;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-color: rgba(226, 232, 240, 0.8);
      --border-dark: rgba(51, 65, 85, 0.6);
      --radius: 10px;
      --shadow-sm: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
      --shadow-md: 0 12px 30px -4px rgba(15, 23, 42, 0.08);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button, input, select, textarea {
      font-family: inherit;
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }
    /* Topbar */
    .topbar {
      background: #090d16;
      color: #94A3B8;
      font-size: 0.8125rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .topbar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-top: 8px;
      padding-bottom: 8px;
    }
    .topbar-items {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
    }
    .topbar-items span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    /* Header & Nav */
    .header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
    }
    .navbar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 74px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      font-size: 1.35rem;
      color: var(--primary);
      letter-spacing: -0.02em;
    }
    .brand-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--secondary), var(--accent-cyan));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: bold;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
    }
    .nav-link {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text-main);
      position: relative;
      padding: 6px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--secondary);
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--secondary);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-size: 0.9375rem;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: 6px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      min-height: 44px;
    }
    .btn:hover {
      transform: translateY(-2px);
    }
    .btn-primary {
      background: var(--primary);
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(15, 23, 42, 0.2);
    }
    .btn-primary:hover {
      background: #1e293b;
    }
    .btn-secondary {
      background: var(--secondary);
      color: #FFFFFF;
    }
    .btn-secondary:hover {
      background: #0c6178;
    }
    .btn-outline {
      border-color: #CBD5E1;
      color: var(--primary);
      background: #FFFFFF;
    }
    .btn-outline:hover {
      border-color: var(--secondary);
      color: var(--secondary);
    }
    /* Section Shared */
    .section {
      padding: 88px 0;
      position: relative;
    }
    .section-alt {
      background: #FFFFFF;
    }
    .section-dark {
      background: var(--bg-dark);
      color: #F8FAFC;
    }
    .section-header {
      margin-bottom: 52px;
      max-width: 820px;
    }
    .section-header.center {
      text-align: center;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8125rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--secondary);
      background: rgba(14, 116, 144, 0.08);
      padding: 4px 12px;
      border-radius: 4px;
      margin-bottom: 12px;
    }
    .section-dark .section-tag {
      background: rgba(6, 182, 212, 0.15);
      color: var(--accent-cyan);
    }
    .section-title {
      font-size: 2.125rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--primary);
      margin-bottom: 14px;
      letter-spacing: -0.015em;
    }
    .section-dark .section-title {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 1.0625rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }
    /* Hero - 文档/知识调度中心风格 */
    .hero {
      position: relative;
      background: linear-gradient(rgba(11, 15, 23, 0.82), rgba(11, 15, 23, 0.94)), url('/assets/images/11e9f7bff8c4fd69.webp') center/cover no-repeat;
      color: #FFFFFF;
      padding: 100px 0 90px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .hero-container {
      max-width: 900px;
      margin: 0 auto;
      text-align: center;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: 999px;
      font-size: 0.875rem;
      color: #E2E8F0;
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 20px;
      letter-spacing: -0.02em;
    }
    .hero-desc {
      font-size: 1.125rem;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 36px;
    }
    .search-mock {
      max-width: 680px;
      margin: 0 auto 20px;
      display: flex;
      background: #FFFFFF;
      border-radius: 8px;
      overflow: hidden;
      padding: 6px;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    }
    .search-mock input {
      flex: 1;
      border: none;
      outline: none;
      padding: 12px 18px;
      font-size: 1rem;
      color: var(--text-main);
    }
    .search-mock button {
      background: var(--secondary);
      color: #fff;
      border: none;
      padding: 0 26px;
      border-radius: 6px;
      font-weight: 600;
      cursor: pointer;
    }
    .chips-group {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 10px;
      font-size: 0.875rem;
      color: #94A3B8;
    }
    .chips-group a {
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.12);
      padding: 4px 14px;
      border-radius: 20px;
      color: #E2E8F0;
    }
    .chips-group a:hover {
      background: rgba(255, 255, 255, 0.2);
      color: #FFFFFF;
    }
    /* Section 2: 品牌概览 */
    .overview-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .overview-img-wrap {
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
    }
    .overview-points {
      list-style: none;
      margin-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .overview-points li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.95rem;
      color: #334155;
    }
    .bullet-icon {
      width: 20px;
      height: 20px;
      background: rgba(14, 116, 144, 0.12);
      color: var(--secondary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 0.75rem;
      flex-shrink: 0;
      margin-top: 2px;
    }
    /* Section 3: 核心优势矩阵 */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .adv-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 30px;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
    }
    .adv-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(14, 116, 144, 0.4);
    }
    .adv-icon {
      width: 48px;
      height: 48px;
      border-radius: 8px;
      background: rgba(14, 116, 144, 0.08);
      color: var(--secondary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      margin-bottom: 20px;
      font-weight: bold;
    }
    .adv-card h3 {
      font-size: 1.1875rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--primary);
    }
    .adv-card p {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.65;
    }
    /* Section 4: 热门产品 */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .product-card {
      background: #FFFFFF;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .product-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .product-media {
      height: 220px;
      overflow: hidden;
      background: #EEF2F6;
    }
    .product-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .product-card:hover .product-media img {
      transform: scale(1.04);
    }
    .product-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .product-tag {
      font-size: 0.75rem;
      color: var(--secondary);
      font-weight: 700;
      margin-bottom: 8px;
    }
    .product-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .product-desc {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
    }
    .product-specs {
      margin-top: auto;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
      margin-bottom: 20px;
    }
    .spec-item {
      display: flex;
      justify-content: space-between;
      font-size: 0.8125rem;
      margin-bottom: 6px;
    }
    .spec-label {
      color: var(--text-muted);
    }
    .spec-val {
      font-weight: 600;
      color: var(--primary);
    }
    /* Section 5: 深色中控集成方案 */
    .arch-flow {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }
    .arch-step {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius);
      padding: 24px;
      position: relative;
    }
    .arch-step-num {
      font-size: 0.8125rem;
      font-weight: 800;
      color: var(--accent-cyan);
      letter-spacing: 0.05em;
      margin-bottom: 12px;
    }
    .arch-step h4 {
      font-size: 1.125rem;
      color: #FFFFFF;
      margin-bottom: 10px;
    }
    .arch-step p {
      font-size: 0.875rem;
      color: #94A3B8;
      line-height: 1.6;
    }
    /* Section 6: 参数对比表 */
    .specs-table-wrap {
      overflow-x: auto;
      background: #FFFFFF;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .specs-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.9375rem;
    }
    .specs-table th, .specs-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .specs-table th {
      background: #F1F5F9;
      color: var(--primary);
      font-weight: 700;
    }
    .specs-table tr:last-child td {
      border-bottom: none;
    }
    .specs-table .highlight-col {
      background: rgba(14, 116, 144, 0.03);
      font-weight: 600;
      color: var(--secondary);
    }
    /* Section 7: 案例现场 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .case-card {
      background: #FFFFFF;
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .case-card-img {
      height: 190px;
      overflow: hidden;
    }
    .case-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-card-content {
      padding: 24px;
    }
    .case-sector {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--secondary);
      text-transform: uppercase;
      margin-bottom: 8px;
    }
    .case-card h3 {
      font-size: 1.125rem;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .case-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    /* Section 8: 核心数据指标统计条 */
    .stats-bar {
      background: var(--primary);
      color: #FFFFFF;
      padding: 60px 0;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .stat-number {
      font-size: 2.75rem;
      font-weight: 800;
      color: var(--accent-cyan);
      margin-bottom: 6px;
      line-height: 1;
    }
    .stat-label {
      font-size: 0.9375rem;
      color: #94A3B8;
      font-weight: 500;
    }
    /* Section 9: 交付实施流程 */
    .timeline-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 20px;
      position: relative;
    }
    .timeline-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 24px 18px;
      border-radius: var(--radius);
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .timeline-step {
      display: inline-block;
      width: 34px;
      height: 34px;
      line-height: 34px;
      background: var(--primary);
      color: #FFFFFF;
      font-weight: 700;
      border-radius: 50%;
      margin-bottom: 14px;
      font-size: 0.9rem;
    }
    .timeline-card h4 {
      font-size: 1.05rem;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .timeline-card p {
      font-size: 0.8125rem;
      color: var(--text-muted);
      line-height: 1.55;
    }
    /* Section 10: 资讯列表 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 0.8125rem;
      color: var(--text-muted);
      margin-bottom: 10px;
    }
    .news-card h3 {
      font-size: 1.125rem;
      color: var(--primary);
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .news-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex: 1;
    }
    .news-more {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--secondary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    /* Section 11: 合作伙伴 */
    .partners-row {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
      align-items: center;
    }
    .partner-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 20px 10px;
      border-radius: 8px;
      text-align: center;
      font-size: 0.875rem;
      font-weight: 600;
      color: #475569;
      box-shadow: var(--shadow-sm);
    }
    /* Section 12: 询盘表单 CTA */
    .inquiry-wrap {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 48px;
      box-shadow: var(--shadow-md);
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 48px;
      align-items: center;
    }
    .inquiry-info h3 {
      font-size: 1.75rem;
      color: var(--primary);
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .inquiry-info p {
      color: var(--text-muted);
      font-size: 0.95rem;
      margin-bottom: 24px;
    }
    .inquiry-form {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group.full {
      grid-column: span 2;
    }
    .form-group label {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary);
    }
    .form-group input, .form-group select, .form-group textarea {
      padding: 10px 14px;
      border: 1px solid #CBD5E1;
      border-radius: 6px;
      font-size: 0.9375rem;
      outline: none;
      transition: var(--transition);
    }
    .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
      border-color: var(--secondary);
      box-shadow: 0 0 0 3px rgba(14, 116, 144, 0.15);
    }
    /* Footer */
    .footer {
      background: #090D17;
      color: #94A3B8;
      padding: 72px 0 32px;
      font-size: 0.875rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 48px;
      margin-bottom: 48px;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 32px;
      text-align: center;
      font-size: 0.8125rem;
      color: #64748B;
    }
    .footer-bottom a {
      color: #94A3B8;
    }
    /* Responsive Breakpoints */
    @media (max-width: 1024px) {
      .advantages-grid, .products-grid, .cases-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .arch-flow {
        grid-template-columns: repeat(2, 1fr);
      }
      .timeline-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .partners-row {
        grid-template-columns: repeat(3, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .inquiry-wrap {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 768px) {
      .topbar {
        display: none;
      }
      .nav-links {
        display: none;
      }
      .hero-title {
        font-size: 2rem;
      }
      .overview-grid {
        grid-template-columns: 1fr;
      }
      .advantages-grid, .products-grid, .cases-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
      }
      .timeline-grid {
        grid-template-columns: 1fr;
      }
      .partners-row {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .inquiry-form {
        grid-template-columns: 1fr;
      }
      .form-group.full {
        grid-column: span 1;
      }
    }