/* roulang page: index */
:root {
      --primary: #0D5C75;
      --primary-dark: #083c4d;
      --primary-light: #167a99;
      --accent: #10B981;
      --accent-hover: #059669;
      --bg-main: #F8FAFB;
      --bg-dark: #0B1924;
      --bg-card: #FFFFFF;
      --text-title: #111827;
      --text-body: #374151;
      --text-muted: #6B7280;
      --border-color: #E5E7EB;
      --radius-sm: 4px;
      --radius-md: 6px;
      --radius-lg: 8px;
      --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px 0 rgba(0, 0, 0, 0.03);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
      --shadow-hover: 0 10px 15px -3px rgba(13, 92, 117, 0.12);
      --max-w: 1240px;
    }

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

    body {
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-body);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.2s ease;
    }

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

    button, input, select, textarea {
      font-family: inherit;
    }

    .container {
      width: 100%;
      max-width: var(--max-w);
      margin: 0 auto;
      padding: 0 1.5rem;
    }

    /* 顶部服务条与导航 */
    .top-bar {
      background-color: #082833;
      color: #9CA3AF;
      font-size: 0.8125rem;
      padding: 0.4rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-tags span {
      margin-right: 1rem;
      color: #D1D5DB;
    }
    .top-bar-contact span {
      margin-left: 1rem;
      color: #F3F4F6;
    }

    header.main-header {
      background: #ffffff;
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: var(--shadow-sm);
    }
    .nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.02em;
    }
    .brand-logo svg {
      width: 32px;
      height: 32px;
      fill: var(--primary);
    }
    .nav-menu {
      display: flex;
      gap: 1.75rem;
      list-style: none;
    }
    .nav-menu a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-title);
      padding: 0.5rem 0;
      position: relative;
    }
    .nav-menu a:hover {
      color: var(--primary);
    }
    .nav-menu a:hover::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary);
    }
    .nav-cta-btn {
      background: var(--accent);
      color: #ffffff;
      font-weight: 600;
      font-size: 0.925rem;
      padding: 0.65rem 1.4rem;
      border-radius: var(--radius-md);
      transition: background 0.2s ease, transform 0.15s ease;
      display: inline-block;
    }
    .nav-cta-btn:hover {
      background: var(--accent-hover);
      transform: translateY(-1px);
    }

    /* 移动端菜单切换按钮 */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 0.5rem;
    }
    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-title);
      margin: 5px 0;
      transition: 0.2s;
    }

    /* 通用板块排版规范 */
    .section-padding {
      padding: 5rem 0;
    }
    .section-alt {
      background-color: #FFFFFF;
    }
    .section-header {
      margin-bottom: 3rem;
      text-align: center;
    }
    .section-header.left-aligned {
      text-align: left;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8125rem;
      font-weight: 600;
      color: var(--primary);
      background: rgba(13, 92, 117, 0.08);
      padding: 0.25rem 0.75rem;
      border-radius: 9999px;
      margin-bottom: 0.75rem;
      text-transform: uppercase;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: var(--text-title);
      letter-spacing: -0.015em;
      line-height: 1.3;
      margin-bottom: 0.85rem;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 780px;
      margin: 0 auto;
      line-height: 1.7;
    }
    .section-header.left-aligned .section-desc {
      margin: 0;
    }

    /* 按钮样式 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      font-weight: 600;
      border-radius: var(--radius-md);
      transition: all 0.2s ease;
      cursor: pointer;
      text-align: center;
      line-height: 1;
    }
    .btn-primary {
      background: var(--primary);
      color: #ffffff;
      padding: 0.85rem 1.85rem;
      font-size: 1rem;
      box-shadow: 0 2px 4px rgba(13, 92, 117, 0.2);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-1px);
    }
    .btn-accent {
      background: var(--accent);
      color: #ffffff;
      padding: 0.85rem 1.85rem;
      font-size: 1rem;
    }
    .btn-accent:hover {
      background: var(--accent-hover);
      transform: translateY(-1px);
    }
    .btn-outline {
      background: transparent;
      color: var(--primary);
      border: 1px solid var(--primary);
      padding: 0.85rem 1.85rem;
      font-size: 1rem;
    }
    .btn-outline:hover {
      background: rgba(13, 92, 117, 0.05);
    }
    .btn-white {
      background: #ffffff;
      color: var(--primary-dark);
      padding: 0.85rem 1.85rem;
      font-size: 1rem;
    }
    .btn-white:hover {
      background: #F3F4F6;
    }

    /* 1. HERO 强转化首屏 */
    #hero {
      position: relative;
      background: linear-gradient(135deg, rgba(8, 40, 51, 0.95), rgba(13, 92, 117, 0.92)), url('/assets/images/225d96d7ccd58de1.jpg') center/cover no-repeat;
      color: #ffffff;
      padding: 5.5rem 0 5rem;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 3.5rem;
      align-items: center;
    }
    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 0.65rem;
      margin-bottom: 1.25rem;
    }
    .badge-item {
      font-size: 0.8rem;
      font-weight: 500;
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.2);
      padding: 0.25rem 0.65rem;
      border-radius: var(--radius-sm);
    }
    .hero-content h1 {
      font-size: 2.85rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 1.25rem;
      letter-spacing: -0.02em;
    }
    .hero-lead {
      font-size: 1.075rem;
      color: #E2E8F0;
      margin-bottom: 2rem;
      line-height: 1.8;
      max-width: 620px;
    }
    .hero-cta-group {
      display: flex;
      gap: 1rem;
      margin-bottom: 2.5rem;
    }
    .hero-trust-list {
      display: flex;
      gap: 2rem;
      border-top: 1px solid rgba(255, 255, 255, 0.15);
      padding-top: 1.5rem;
    }
    .trust-stat strong {
      display: block;
      font-size: 1.5rem;
      color: #34D399;
      font-weight: 700;
    }
    .trust-stat span {
      font-size: 0.825rem;
      color: #94A3B8;
    }

    .hero-panel-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 1.75rem;
      box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
      color: var(--text-title);
    }
    .panel-card-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 1rem;
      margin-bottom: 1.25rem;
    }
    .panel-card-head h4 {
      font-size: 1.1rem;
      color: var(--primary);
    }
    .status-dot {
      display: inline-flex;
      align-items: center;
      font-size: 0.8rem;
      color: var(--accent);
      font-weight: 600;
    }
    .status-dot::before {
      content: '';
      width: 8px;
      height: 8px;
      background: var(--accent);
      border-radius: 50%;
      margin-right: 6px;
    }
    .preview-workflow {
      display: flex;
      flex-direction: column;
      gap: 1rem;
      margin-bottom: 1.5rem;
    }
    .workflow-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: var(--bg-main);
      padding: 0.75rem 1rem;
      border-radius: var(--radius-md);
      font-size: 0.875rem;
    }
    .workflow-item span:first-child {
      color: var(--text-body);
      font-weight: 500;
    }
    .workflow-item span:last-child {
      color: var(--primary);
      font-family: monospace;
      font-weight: 600;
    }

    /* 2. 实验室痛点三连 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .pain-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2.25rem 1.75rem;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }
    .pain-card:hover {
      box-shadow: var(--shadow-hover);
      border-color: rgba(13, 92, 117, 0.3);
      transform: translateY(-3px);
    }
    .pain-icon-box {
      width: 50px;
      height: 50px;
      background: rgba(13, 92, 117, 0.08);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.25rem;
      color: var(--primary);
      font-size: 1.4rem;
    }
    .pain-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 0.85rem;
    }
    .pain-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1.25rem;
    }
    .pain-solution {
      background: #F0FDF4;
      border-left: 3px solid var(--accent);
      padding: 0.75rem 1rem;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      font-size: 0.875rem;
      color: #065F46;
      font-weight: 500;
    }

    /* 3. 架构介绍区 */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .about-image-wrap {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
    }
    .about-specs {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.25rem;
      margin-top: 1.75rem;
    }
    .spec-box {
      border: 1px solid var(--border-color);
      padding: 1rem;
      border-radius: var(--radius-md);
      background: var(--bg-main);
    }
    .spec-box h5 {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 0.25rem;
    }
    .spec-box span {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--primary);
    }

    /* 4. 核心功能六卡片 */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .feature-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2rem 1.75rem;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .feature-card:hover {
      box-shadow: var(--shadow-hover);
      border-color: rgba(13, 92, 117, 0.3);
      transform: translateY(-3px);
    }
    .feature-head {
      margin-bottom: 1rem;
    }
    .feature-tech-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      display: inline-block;
      margin-bottom: 0.5rem;
    }
    .feature-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 0.75rem;
    }
    .feature-card p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1.5rem;
    }
    .feature-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      background: #EFF6FF;
      color: #1E40AF;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 0.3rem 0.6rem;
      border-radius: var(--radius-sm);
      align-self: flex-start;
    }

    /* 5. 产品矩阵 */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .product-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2.5rem 2rem;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      position: relative;
      transition: all 0.25s ease;
    }
    .product-card.featured {
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-hover);
    }
    .featured-label {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary);
      color: #ffffff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 0.2rem 0.75rem;
      border-radius: 9999px;
      text-transform: uppercase;
    }
    .product-card h3 {
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 0.5rem;
    }
    .product-type {
      font-size: 0.875rem;
      color: var(--primary);
      font-weight: 600;
      margin-bottom: 1.25rem;
    }
    .product-desc {
      font-size: 0.925rem;
      color: var(--text-muted);
      margin-bottom: 1.75rem;
      min-height: 48px;
    }
    .product-features-list {
      list-style: none;
      margin-bottom: 2rem;
      flex-grow: 1;
    }
    .product-features-list li {
      font-size: 0.9rem;
      color: var(--text-body);
      margin-bottom: 0.75rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .product-features-list li::before {
      content: '✓';
      color: var(--accent);
      font-weight: bold;
    }
    .product-card .btn {
      width: 100%;
    }

    /* 6. 场景演示 */
    .scenario-item {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
      margin-bottom: 4rem;
    }
    .scenario-item:last-child {
      margin-bottom: 0;
    }
    .scenario-item.reverse {
      direction: rtl;
    }
    .scenario-item.reverse .scenario-info {
      direction: ltr;
    }
    .scenario-item.reverse .scenario-media {
      direction: ltr;
    }
    .scenario-step-badge {
      display: inline-block;
      font-size: 0.8125rem;
      font-weight: 700;
      color: var(--accent);
      background: #ECFDF5;
      padding: 0.2rem 0.65rem;
      border-radius: var(--radius-sm);
      margin-bottom: 0.75rem;
    }
    .scenario-info h3 {
      font-size: 1.65rem;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 1rem;
    }
    .scenario-info p {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 1.5rem;
    }
    .scenario-media {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      background: #FFFFFF;
      border: 1px solid var(--border-color);
    }

    /* 7. 深色案例与数据安全 */
    #security-case {
      background-color: var(--bg-dark);
      color: #ffffff;
      padding: 5.5rem 0;
    }
    .security-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    #security-case .section-tag {
      background: rgba(16, 185, 129, 0.15);
      color: #34D399;
    }
    #security-case .section-title {
      color: #ffffff;
    }
    #security-case .section-desc {
      color: #94A3B8;
    }
    .security-specs-list {
      margin-top: 2rem;
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
    }
    .sec-spec {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 1.25rem;
      border-radius: var(--radius-md);
    }
    .sec-spec h4 {
      font-size: 1.05rem;
      color: #F3F4F6;
      margin-bottom: 0.35rem;
    }
    .sec-spec p {
      font-size: 0.875rem;
      color: #94A3B8;
      line-height: 1.6;
    }
    .case-stat-box {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-lg);
      padding: 2.25rem;
    }
    .case-stat-box h4 {
      font-size: 1.35rem;
      margin-bottom: 1.25rem;
      color: #34D399;
    }
    .stat-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.5rem;
      margin-top: 1.5rem;
      padding-top: 1.5rem;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
    .stat-row-item strong {
      display: block;
      font-size: 1.85rem;
      color: #ffffff;
      font-weight: 700;
    }
    .stat-row-item span {
      font-size: 0.85rem;
      color: #94A3B8;
    }

    /* 8. 成功案例与效率对比 */
    .compare-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2rem;
    }
    .compare-card {
      border-radius: var(--radius-lg);
      padding: 2.25rem;
      border: 1px solid var(--border-color);
    }
    .compare-card.traditional {
      background: #F9FAFB;
    }
    .compare-card.system-applied {
      background: #FFFFFF;
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .compare-card h3 {
      font-size: 1.25rem;
      margin-bottom: 1.5rem;
      font-weight: 700;
    }
    .traditional h3 { color: #4B5563; }
    .system-applied h3 { color: var(--primary); }
    .compare-item {
      margin-bottom: 1.25rem;
      padding-bottom: 1.25rem;
      border-bottom: 1px solid var(--border-color);
    }
    .compare-item:last-child {
      margin-bottom: 0;
      padding-bottom: 0;
      border-bottom: none;
    }
    .compare-label {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-muted);
      margin-bottom: 0.25rem;
    }
    .compare-val {
      font-size: 1rem;
      color: var(--text-title);
      font-weight: 500;
    }

    /* 9. 关键科研指标统计条 */
    #metrics {
      background: var(--primary);
      color: #ffffff;
      padding: 3.5rem 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      text-align: center;
    }
    .metric-col strong {
      display: block;
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.1;
      margin-bottom: 0.5rem;
      font-family: monospace, system-ui;
      color: #34D399;
    }
    .metric-col p {
      font-size: 0.95rem;
      color: #E2E8F0;
      line-height: 1.5;
    }

    /* 10. 用户评价区 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2.25rem 1.75rem;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testimonial-rating {
      color: #F59E0B;
      font-size: 1rem;
      margin-bottom: 1rem;
    }
    .testimonial-text {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 1.5rem;
      flex-grow: 1;
    }
    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 0.85rem;
      border-top: 1px solid var(--border-color);
      padding-top: 1rem;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      background: rgba(13, 92, 117, 0.1);
      color: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.05rem;
    }
    .author-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-title);
    }
    .author-info span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 11. 资讯动态证据区 */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .insight-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
    }
    .insight-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }
    .insight-cover {
      height: 190px;
      overflow: hidden;
    }
    .insight-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    .insight-card:hover .insight-cover img {
      transform: scale(1.04);
    }
    .insight-body {
      padding: 1.5rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .insight-meta {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 0.5rem;
    }
    .insight-body h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 0.75rem;
      line-height: 1.45;
    }
    .insight-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 1.25rem;
    }
    .insight-link {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
    }

    /* 12. FAQ 手风琴 */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 1rem;
      overflow: hidden;
    }
    .faq-item summary {
      padding: 1.25rem 1.5rem;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-title);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: background 0.2s ease;
    }
    .faq-item summary:hover {
      background: #F9FAFB;
    }
    .faq-item summary::-webkit-details-marker {
      display: none;
    }
    .faq-icon {
      font-size: 1.25rem;
      color: var(--primary);
      transition: transform 0.25s ease;
    }
    .faq-item[open] .faq-icon {
      transform: rotate(45deg);
    }
    .faq-content {
      padding: 0 1.5rem 1.25rem 1.5rem;
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.7;
      border-top: 1px solid #F3F4F6;
    }

    /* 转化与预约表单区 */
    #contact-cta {
      background: linear-gradient(180deg, #F8FAFB 0%, #FFFFFF 100%);
      padding: 5rem 0;
      border-top: 1px solid var(--border-color);
    }
    .cta-box-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 3rem;
      box-shadow: var(--shadow-md);
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .cta-guarantee-list {
      margin-top: 2rem;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    .guarantee-point {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-size: 0.95rem;
      color: var(--text-body);
    }
    .guarantee-point-icon {
      width: 24px;
      height: 24px;
      background: #ECFDF5;
      color: var(--accent);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.85rem;
      font-weight: bold;
    }
    .contact-form {
      display: flex;
      flex-direction: column;
      gap: 1.15rem;
    }
    .form-group label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-title);
      margin-bottom: 0.35rem;
    }
    .form-control {
      width: 100%;
      padding: 0.75rem 1rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      font-size: 0.95rem;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }
    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(13, 92, 117, 0.15);
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
    }

    /* 吸底浮动条 */
    .floating-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(11, 25, 36, 0.96);
      backdrop-filter: blur(8px);
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding: 0.75rem 0;
      z-index: 999;
      box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.15);
    }
    .floating-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .floating-info {
      display: flex;
      align-items: center;
      gap: 1.5rem;
    }
    .floating-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: #FFFFFF;
    }
    .floating-tip {
      font-size: 0.85rem;
      color: #94A3B8;
    }
    .floating-actions {
      display: flex;
      align-items: center;
      gap: 1rem;
    }
    .floating-close-btn {
      background: none;
      border: none;
      color: #94A3B8;
      cursor: pointer;
      font-size: 1.25rem;
      line-height: 1;
      padding: 0.25rem;
    }

    /* 页脚 Footer */
    footer.main-footer {
      background: #08212B;
      color: #9CA3AF;
      padding: 4.5rem 0 2rem;
      font-size: 0.9rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      margin-bottom: 50px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.3fr 0.9fr 0.9fr 1.1fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-brand h4 {
      font-size: 1.25rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 1rem;
    }
    .footer-brand p {
      font-size: 0.875rem;
      line-height: 1.7;
      margin-bottom: 1.25rem;
    }
    .footer-col h5 {
      font-size: 1rem;
      font-weight: 600;
      color: #FFFFFF;
      margin-bottom: 1.25rem;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.65rem;
    }
    .footer-links a:hover {
      color: #FFFFFF;
      padding-left: 3px;
    }
    .footer-contact p {
      font-size: 0.875rem;
      margin-bottom: 0.6rem;
      line-height: 1.6;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8125rem;
    }
    .footer-bottom-links {
      display: flex;
      gap: 1.5rem;
    }

    /* 响应式样式适配断点 */
    @media (max-width: 1024px) {
      .hero-grid, .about-grid, .security-grid, .cta-box-card {
        grid-template-columns: 1fr;
        gap: 2.5rem;
      }
      .features-grid, .products-grid, .testimonial-grid, .insights-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
      }
      .scenario-item, .scenario-item.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
        gap: 2rem;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2.5rem;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 1.5rem;
        gap: 1rem;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-menu.active {
        display: flex;
      }
      .menu-toggle {
        display: block;
      }
      .hero-content h1 {
        font-size: 2.15rem;
      }
      .hero-cta-group {
        flex-direction: column;
      }
      .hero-trust-list {
        flex-direction: column;
        gap: 1rem;
      }
      .pain-grid, .features-grid, .products-grid, .testimonial-grid, .insights-grid, .compare-grid {
        grid-template-columns: 1fr;
      }
      .metrics-grid {
        grid-template-columns: 1fr;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .cta-box-card {
        padding: 1.75rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
      }
      .floating-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
      }
      .floating-tip {
        display: none;
      }
      footer.main-footer {
        margin-bottom: 70px;
      }
    }