/* roulang page: index */
:root {
      --primary: #1B3BFF;
      --primary-hover: #0E2AD8;
      --accent-purple: #7C3AED;
      --accent-teal: #00D29E;
      --bg-main: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-dark: #0B0F19;
      --bg-dark-card: #141B2D;
      --text-title: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --text-light: #94A3B8;
      --border-color: #E2E8F0;
      --border-dark: #1E293B;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 14px;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 6px 20px -2px rgba(15, 23, 42, 0.06);
      --shadow-hover: 0 16px 32px -4px rgba(27, 59, 255, 0.12);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-body);
      line-height: 1.7;
      font-size: 15px;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

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

    ul, ol {
      list-style: none;
    }

    button, input {
      font-family: inherit;
      outline: none;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      padding: 12px 26px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      font-size: 15px;
      gap: 8px;
      border: 1px solid transparent;
    }

    .btn-primary {
      background-color: var(--primary);
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(27, 59, 255, 0.3);
    }

    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(27, 59, 255, 0.4);
    }

    .btn-secondary {
      background-color: #FFFFFF;
      color: var(--text-title);
      border-color: var(--border-color);
    }

    .btn-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: #F0F4FF;
    }

    .btn-sm {
      padding: 8px 16px;
      font-size: 14px;
    }

    /* Section 通用规范 */
    section {
      padding: 80px 0;
      position: relative;
    }

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

    .section-gray {
      background-color: var(--bg-main);
    }

    .section-dark {
      background-color: var(--bg-dark);
      color: #F8FAFC;
    }

    .section-header {
      margin-bottom: 48px;
    }

    .section-header.text-center {
      text-align: center;
    }

    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 1px;
      text-transform: uppercase;
      color: var(--primary);
      background: rgba(27, 59, 255, 0.08);
      padding: 4px 12px;
      border-radius: 4px;
      margin-bottom: 12px;
    }

    .section-dark .section-tag {
      color: var(--accent-teal);
      background: rgba(0, 210, 158, 0.12);
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-title);
      line-height: 1.3;
      margin-bottom: 14px;
    }

    .section-dark .section-title {
      color: #FFFFFF;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 720px;
      line-height: 1.7;
    }

    .section-header.text-center .section-desc {
      margin: 0 auto;
    }

    .section-dark .section-desc {
      color: var(--text-light);
    }

    /* 双行导航 */
    .top-bar {
      background: #0B0F19;
      color: var(--text-light);
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .top-bar-flex {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .top-bar-links a {
      margin-left: 20px;
      color: var(--text-light);
    }

    .top-bar-links a:hover {
      color: #FFFFFF;
    }

    .main-header {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      position: sticky;
      top: 0;
      z-index: 999;
      box-shadow: 0 1px 3px rgba(15, 23, 42, 0.05);
      border-bottom: 1px solid var(--border-color);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 800;
      color: var(--primary);
    }

    .brand-logo-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary), var(--accent-purple));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      font-size: 20px;
      font-weight: bold;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 32px;
    }

    .nav-link {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-body);
      position: relative;
      padding: 6px 0;
    }

    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }

    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-title);
      cursor: pointer;
    }

    /* 1. Hero 板块：图标矩阵 + 状态条 + 短标题 (无大图主视觉) */
    #hero {
      padding: 70px 0 60px;
      background: linear-gradient(180deg, #FFFFFF 0%, #F1F5F9 100%);
      border-bottom: 1px solid var(--border-color);
    }

    .hero-top-status {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 6px 16px;
      border-radius: 30px;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 24px;
      box-shadow: var(--shadow-sm);
    }

    .hero-status-dot {
      width: 8px;
      height: 8px;
      background-color: var(--accent-teal);
      border-radius: 50%;
      box-shadow: 0 0 0 3px rgba(0, 210, 158, 0.2);
    }

    .hero-title-main {
      font-size: 44px;
      font-weight: 900;
      color: var(--text-title);
      line-height: 1.25;
      margin-bottom: 20px;
    }

    .hero-title-main span {
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent-purple) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-intro-text {
      font-size: 17px;
      color: var(--text-muted);
      line-height: 1.8;
      max-width: 860px;
      margin-bottom: 32px;
    }

    .hero-actions {
      display: flex;
      gap: 16px;
      margin-bottom: 48px;
    }

    .hero-icon-matrix {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 10px;
    }

    .matrix-card {
      background: #FFFFFF;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .matrix-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary);
    }

    .matrix-icon {
      width: 44px;
      height: 44px;
      background: #EEF2FF;
      color: var(--primary);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: bold;
      margin-bottom: 14px;
    }

    .matrix-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 6px;
    }

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

    /* 2. 卖点三连 */
    .triplet-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .triplet-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      position: relative;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .triplet-card:hover {
      box-shadow: var(--shadow-hover);
      border-color: var(--primary);
      transform: translateY(-4px);
    }

    .triplet-badge {
      position: absolute;
      top: 24px;
      right: 24px;
      font-size: 12px;
      padding: 3px 10px;
      border-radius: 20px;
      background: #EEF2FF;
      color: var(--primary);
      font-weight: 700;
    }

    .triplet-num {
      font-size: 28px;
      font-weight: 900;
      color: var(--accent-purple);
      margin-bottom: 16px;
    }

    .triplet-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 12px;
    }

    .triplet-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 3. 入口矩阵 */
    .portal-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .portal-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

    .portal-item:hover {
      border-color: var(--primary);
      background: #FBFCFE;
      transform: translateY(-3px);
    }

    .portal-head {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
    }

    .portal-chip {
      width: 32px;
      height: 32px;
      border-radius: 6px;
      background: #0B0F19;
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 700;
    }

    .portal-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-title);
    }

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

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

    /* 4. 系统技术架构区 (Intro) */
    .arch-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .arch-spec-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 24px;
    }

    .arch-spec-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 16px;
    }

    .arch-spec-box .val {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary);
    }

    .arch-spec-box .lbl {
      font-size: 12px;
      color: var(--text-muted);
      margin-top: 4px;
    }

    .arch-visual-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-md);
      overflow: hidden;
    }

    .arch-visual-card img {
      border-radius: var(--radius-md);
      width: 100%;
      height: 320px;
      object-fit: cover;
    }

    /* 5. 核心优势 6卡片网格 (Advantages) */
    .adv-grid-6 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .adv-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .adv-card:hover {
      border-color: var(--primary);
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    .adv-icon-wrap {
      width: 46px;
      height: 46px;
      border-radius: var(--radius-sm);
      background: #EEF2FF;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 18px;
      font-weight: bold;
    }

    .adv-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 10px;
    }

    .adv-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 6. 热门品类与最新发布 (Products) */
    .product-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .product-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }

    .product-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }

    .product-img-box {
      height: 200px;
      position: relative;
      overflow: hidden;
    }

    .product-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .product-card:hover .product-img-box img {
      transform: scale(1.05);
    }

    .product-category-tag {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(11, 15, 25, 0.85);
      backdrop-filter: blur(4px);
      color: #FFFFFF;
      font-size: 12px;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: 4px;
    }

    .product-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .product-title {
      font-size: 19px;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 10px;
    }

    .product-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
    }

    .product-meta-row {
      display: flex;
      justify-content: space-between;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
      font-size: 13px;
    }

    .product-meta-item .key {
      color: var(--text-light);
    }

    .product-meta-item .val {
      font-weight: 700;
      color: var(--primary);
    }

    /* 7. 深色技术底座 (Tech-Core) */
    .tech-core-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .tech-card {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 26px;
      transition: var(--transition);
    }

    .tech-card:hover {
      border-color: var(--accent-teal);
      transform: translateY(-4px);
    }

    .tech-card-icon {
      width: 40px;
      height: 40px;
      background: rgba(0, 210, 158, 0.1);
      color: var(--accent-teal);
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      margin-bottom: 16px;
    }

    .tech-card-title {
      font-size: 17px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 8px;
    }

    .tech-card-desc {
      font-size: 13px;
      color: var(--text-light);
      line-height: 1.7;
    }

    /* 8. 场景化联运落地方案 (Scenarios) */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .scenario-box {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-sm);
    }

    .scenario-step {
      font-size: 12px;
      font-weight: 800;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 8px;
    }

    .scenario-name {
      font-size: 19px;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 12px;
    }

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

    .scenario-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .scenario-tag-pill {
      font-size: 12px;
      background: #F1F5F9;
      color: var(--text-body);
      padding: 4px 10px;
      border-radius: 4px;
    }

    /* 9. 数据成效统计条 (Metrics) */
    #metrics {
      background: linear-gradient(135deg, #1B3BFF 0%, #0B1970 100%);
      color: #FFFFFF;
      padding: 60px 0;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }

    .metric-value {
      font-size: 40px;
      font-weight: 900;
      line-height: 1;
      margin-bottom: 8px;
      color: #FFFFFF;
    }

    .metric-value span {
      color: var(--accent-teal);
    }

    .metric-label {
      font-size: 15px;
      font-weight: 600;
      color: #E2E8F0;
      margin-bottom: 4px;
    }

    .metric-sub {
      font-size: 12px;
      color: #94A3B8;
    }

    /* 10. 用户故事 (Stories) */
    .story-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }

    .story-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: var(--shadow-sm);
    }

    .story-header {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 18px;
    }

    .story-avatar-fake {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #EEF2FF;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 16px;
    }

    .story-meta h4 {
      font-size: 17px;
      color: var(--text-title);
    }

    .story-meta p {
      font-size: 13px;
      color: var(--text-muted);
    }

    .story-quote {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 20px;
      font-style: italic;
    }

    .story-stats {
      display: flex;
      gap: 24px;
      border-top: 1px dashed var(--border-color);
      padding-top: 16px;
    }

    .story-stats div span {
      display: block;
      font-size: 12px;
      color: var(--text-light);
    }

    .story-stats div strong {
      font-size: 16px;
      color: var(--primary);
    }

    /* 11. 对比差异区 (Comparison) */
    .comparison-table-wrap {
      overflow-x: auto;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }

    .comparison-table th, .comparison-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
    }

    .comparison-table th {
      background: #F8FAFC;
      color: var(--text-title);
      font-weight: 700;
    }

    .comparison-table tr:last-child td {
      border-bottom: none;
    }

    .col-highlight {
      background: #F0F4FF !important;
      font-weight: 700;
      color: var(--primary);
    }

    /* 12. 合作伙伴真实评价 (Testimonials) */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .testi-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
    }

    .testi-text {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 20px;
    }

    .testi-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .testi-user-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--text-muted);
    }

    .testi-user-info .name {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-title);
    }

    .testi-user-info .corp {
      font-size: 12px;
      color: var(--text-light);
    }

    /* 13. 资讯列表与证据 (News-Insights) */
    .news-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .news-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: var(--transition);
      cursor: pointer;
    }

    .news-card:hover {
      border-color: var(--primary);
      transform: translateY(-3px);
    }

    .news-date {
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 8px;
    }

    .news-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 10px;
      line-height: 1.4;
    }

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

    /* 14. 合作疑虑与手风琴 (FAQ) */
    .faq-container {
      max-width: 840px;
      margin: 0 auto;
    }

    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item.active {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      padding: 18px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-title);
      user-select: none;
    }

    .faq-item.active .faq-question {
      color: var(--primary);
    }

    .faq-icon {
      font-size: 18px;
      transition: transform 0.25s ease;
      color: var(--text-light);
    }

    .faq-item.active .faq-icon {
      transform: rotate(180deg);
      color: var(--primary);
    }

    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
      border-top: 1px dashed transparent;
    }

    .faq-item.active .faq-answer {
      display: block;
      border-top-color: #F1F5F9;
    }

    /* 15. 保障条 (Guarantees) */
    .guarantees-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .guarantee-box {
      text-align: center;
      padding: 24px 16px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
    }

    .guarantee-icon {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: #F0FDF4;
      color: var(--accent-teal);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      font-weight: bold;
      margin: 0 auto 14px;
    }

    .guarantee-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 6px;
    }

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

    /* 底部固定转化条 (Sticky Bar) */
    .sticky-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: rgba(11, 15, 25, 0.95);
      backdrop-filter: blur(8px);
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding: 14px 0;
      z-index: 998;
      transform: translateY(100%);
      transition: transform 0.3s ease;
    }

    .sticky-bar.visible {
      transform: translateY(0);
    }

    .sticky-flex {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

    .sticky-text {
      color: #FFFFFF;
    }

    .sticky-text h5 {
      font-size: 16px;
      font-weight: 700;
    }

    .sticky-text p {
      font-size: 12px;
      color: var(--text-light);
    }

    .sticky-form {
      display: flex;
      gap: 10px;
    }

    .sticky-input {
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.2);
      background: rgba(255, 255, 255, 0.08);
      color: #FFFFFF;
      font-size: 13px;
      width: 220px;
    }

    .sticky-input::placeholder {
      color: #94A3B8;
    }

    /* 页脚 Footer */
    footer {
      background: #0B0F19;
      color: #94A3B8;
      padding: 60px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 50px;
    }

    .footer-brand h3 {
      font-size: 20px;
      color: #FFFFFF;
      margin-bottom: 14px;
    }

    .footer-brand p {
      font-size: 13px;
      line-height: 1.8;
      margin-bottom: 16px;
    }

    .footer-col h4 {
      font-size: 15px;
      color: #FFFFFF;
      margin-bottom: 18px;
      font-weight: 700;
    }

    .footer-col ul li {
      margin-bottom: 10px;
      font-size: 13px;
    }

    .footer-col ul li a:hover {
      color: #FFFFFF;
    }

    .footer-trust-badge {
      display: flex;
      gap: 12px;
      margin-top: 16px;
    }

    .trust-chip {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 6px 12px;
      border-radius: 4px;
      font-size: 12px;
      color: #CBD5E1;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-icon-matrix, .portal-grid, .tech-core-grid, .metrics-grid, .guarantees-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .adv-grid-6, .triplet-grid, .product-grid-3, .scenario-grid, .testimonial-grid, .news-grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .arch-wrapper {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      section {
        padding: 50px 0;
      }
      .hero-title-main {
        font-size: 30px;
      }
      .hero-actions {
        flex-direction: column;
      }
      .hero-icon-matrix, .portal-grid, .tech-core-grid, .metrics-grid, .guarantees-grid,
      .adv-grid-6, .triplet-grid, .product-grid-3, .scenario-grid, .story-grid, .testimonial-grid, .news-grid-3 {
        grid-template-columns: 1fr;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-menu.open {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .sticky-flex {
        flex-direction: column;
        align-items: flex-start;
      }
      .sticky-form {
        width: 100%;
      }
      .sticky-input {
        flex: 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }