/* roulang page: index */
:root {
      --primary: #5B21B6;
      --primary-light: #7C3AED;
      --accent: #06B6D4;
      --accent-green: #10B981;
      --dark-surface: #0F172A;
      --dark-card: #1E293B;
      --deep-bg: #090D16;
      --light-bg: #F8FAFC;
      --white: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --text-light: #94A3B8;
      --border-light: #E2E8F0;
      --border-dark: rgba(255, 255, 255, 0.08);
      --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
      --shadow-lg: 0 12px 24px -4px rgba(124, 58, 237, 0.12);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --font-stack: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
      scroll-padding-top: 84px;
      font-size: 16px;
    }

    body {
      font-family: var(--font-stack);
      color: var(--text-main);
      background-color: var(--light-bg);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部双行导航系统 */
    .topbar {
      background-color: #0B1120;
      color: #94A3B8;
      font-size: 0.8125rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      padding: 6px 0;
    }
    .topbar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .topbar-info span {
      margin-right: 18px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 700;
      font-size: 1.25rem;
      color: var(--primary);
    }
    .logo-badge {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--white);
      font-weight: 800;
      font-size: 1.1rem;
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: #334155;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.9375rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      border: 1px solid transparent;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--primary-light));
      color: var(--white);
      box-shadow: 0 4px 14px rgba(91, 33, 182, 0.3);
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, #4C1D95, #6D28D9);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(91, 33, 182, 0.4);
    }
    .btn-secondary {
      background: #FFFFFF;
      color: var(--primary);
      border-color: #CBD5E1;
    }
    .btn-secondary:hover {
      background: #F1F5F9;
      border-color: var(--primary-light);
    }

    /* 板块共有样式与分隔 */
    section {
      padding: 88px 0;
      position: relative;
    }
    .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: 0.75rem;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--primary);
      background: rgba(124, 58, 237, 0.08);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
      border: 1px solid rgba(124, 58, 237, 0.18);
    }
    .section-title {
      font-size: 2.125rem;
      line-height: 1.3;
      color: #0F172A;
      font-weight: 700;
      margin-bottom: 14px;
    }
    .section-lead {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 1. Hero 痛点提问与线索接入首屏 */
    #hero {
      padding: 80px 0 100px;
      background: radial-gradient(circle at 85% 20%, rgba(6, 182, 212, 0.12) 0%, rgba(91, 33, 182, 0.08) 35%, #F8FAFC 70%),
                  url('/assets/images/6545f17fb0884fd0.png') center/cover no-repeat;
      background-blend-mode: overlay;
      border-bottom: 1px solid var(--border-light);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 48px;
      align-items: center;
    }
    .hero-text h1 {
      font-size: 2.75rem;
      line-height: 1.22;
      color: #0B1120;
      font-weight: 800;
      margin-bottom: 20px;
      letter-spacing: -0.02em;
    }
    .hero-subhead {
      font-size: 1.0625rem;
      color: #475569;
      line-height: 1.75;
      margin-bottom: 32px;
    }
    .hero-stats-row {
      display: flex;
      gap: 32px;
      padding-top: 16px;
      border-top: 1px solid #E2E8F0;
    }
    .hero-stat-num {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--primary);
    }
    .hero-stat-label {
      font-size: 0.875rem;
      color: var(--text-muted);
    }
    .hero-card-form {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-lg);
    }
    .form-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: #0F172A;
      margin-bottom: 6px;
    }
    .form-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 22px;
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: #334155;
    }
    .form-input, .form-select {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid #CBD5E1;
      border-radius: var(--radius-sm);
      font-size: 0.9375rem;
      background: #F8FAFC;
      transition: all 0.2s ease;
    }
    .form-input:focus, .form-select:focus {
      outline: none;
      border-color: var(--primary-light);
      background: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
    }

    /* 2. 安全主张区 */
    #security-claim {
      background: #FFFFFF;
    }
    .claim-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .claim-card {
      padding: 32px 24px;
      background: #F8FAFC;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      transition: transform 0.25s ease, border-color 0.25s ease;
    }
    .claim-card:hover {
      transform: translateY(-4px);
      border-color: var(--primary-light);
      box-shadow: var(--shadow-md);
    }
    .claim-icon {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background: rgba(91, 33, 182, 0.1);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      font-weight: bold;
      margin-bottom: 18px;
    }
    .claim-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .claim-card p {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 3. 核心检查项与架构准入 */
    #inspection {
      background: #F1F5F9;
    }
    .checklist-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .check-item {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      background: #FFFFFF;
      padding: 22px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-light);
    }
    .check-badge {
      width: 28px;
      height: 28px;
      background: var(--accent-green);
      color: #FFFFFF;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 0.9rem;
      flex-shrink: 0;
    }
    .check-content h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: #0F172A;
      margin-bottom: 6px;
    }
    .check-content p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 4. 合规徽章与互联标准 */
    #compliance {
      background: #FFFFFF;
      border-top: 1px solid var(--border-light);
    }
    .compliance-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .compliance-box {
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      padding: 24px 20px;
      text-align: center;
      background: #FFFFFF;
    }
    .compliance-code {
      font-family: monospace;
      font-weight: 700;
      font-size: 1.15rem;
      color: var(--primary);
      margin-bottom: 8px;
      display: block;
    }
    .compliance-box h4 {
      font-size: 0.95rem;
      margin-bottom: 6px;
      color: #1E293B;
    }
    .compliance-box p {
      font-size: 0.8125rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 5. 边界说明与可用性拓扑 */
    #boundary {
      background: #F8FAFC;
    }
    .boundary-table-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .boundary-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .boundary-table th, .boundary-table td {
      padding: 16px 20px;
      font-size: 0.92rem;
      border-bottom: 1px solid var(--border-light);
    }
    .boundary-table th {
      background: #F1F5F9;
      color: #334155;
      font-weight: 700;
    }
    .boundary-table tr:last-child td {
      border-bottom: none;
    }
    .status-pill {
      display: inline-block;
      padding: 2px 10px;
      border-radius: 12px;
      font-size: 0.75rem;
      font-weight: 600;
    }
    .status-ok { background: #DCFCE7; color: #15803D; }
    .status-sla { background: #E0E7FF; color: #4338CA; }

    /* 6. 服务矩阵与云渲染实例 */
    #products {
      background: #FFFFFF;
    }
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .product-card {
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      background: #FFFFFF;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
    }
    .product-thumb {
      height: 190px;
      overflow: hidden;
      position: relative;
    }
    .product-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.35s ease;
    }
    .product-card:hover .product-thumb img {
      transform: scale(1.05);
    }
    .product-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .product-body h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: #0F172A;
    }
    .product-body p {
      font-size: 0.92rem;
      color: var(--text-muted);
      margin-bottom: 18px;
      flex: 1;
    }
    .spec-list {
      list-style: none;
      font-size: 0.84rem;
      color: #475569;
      margin-bottom: 20px;
      padding-top: 14px;
      border-top: 1px dashed var(--border-light);
    }
    .spec-list li {
      margin-bottom: 6px;
      display: flex;
      justify-content: space-between;
    }

    /* 7. 深色沉浸架构与负载调度 (布局变体亮点) */
    #dark-showcase {
      background: var(--deep-bg);
      color: #FFFFFF;
      position: relative;
      overflow: hidden;
    }
    #dark-showcase::after {
      content: "";
      position: absolute;
      top: 0; right: 0; bottom: 0; left: 0;
      background: radial-gradient(circle at 20% 40%, rgba(124, 58, 237, 0.15) 0%, transparent 60%);
      pointer-events: none;
    }
    #dark-showcase .section-title {
      color: #FFFFFF;
    }
    #dark-showcase .section-lead {
      color: var(--text-light);
    }
    .dark-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }
    .dark-card {
      background: var(--dark-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 30px;
    }
    .dark-card h3 {
      font-size: 1.25rem;
      margin-bottom: 12px;
      color: #38BDF8;
    }
    .dark-card p {
      font-size: 0.9375rem;
      color: #94A3B8;
      line-height: 1.7;
      margin-bottom: 16px;
    }

    /* 8. 解决方案交付步骤 */
    #solutions {
      background: #F8FAFC;
    }
    .step-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-box {
      background: #FFFFFF;
      padding: 26px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      position: relative;
    }
    .step-index {
      font-size: 0.85rem;
      font-weight: 800;
      color: var(--primary);
      text-transform: uppercase;
      margin-bottom: 8px;
    }
    .step-box h4 {
      font-size: 1.05rem;
      margin-bottom: 8px;
      color: #0F172A;
    }
    .step-box p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 9. 行业动态与技术资讯 */
    #news {
      background: #FFFFFF;
    }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-item {
      background: #F8FAFC;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-cover {
      height: 170px;
      overflow: hidden;
    }
    .news-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-text {
      padding: 22px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 0.78rem;
      color: #94A3B8;
      margin-bottom: 8px;
    }
    .news-text h4 {
      font-size: 1.05rem;
      font-weight: 700;
      line-height: 1.45;
      margin-bottom: 10px;
      color: #1E293B;
    }
    .news-text p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex: 1;
    }

    /* 10. 信任背书与企业客户故事 */
    #stories {
      background: #F1F5F9;
    }
    .story-card-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
    }
    .story-card {
      background: #FFFFFF;
      padding: 32px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .story-quote {
      font-size: 0.95rem;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 24px;
      position: relative;
    }
    .story-author {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid #E2E8F0;
      padding-top: 18px;
    }
    .avatar-mock {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }
    .author-details strong {
      display: block;
      font-size: 0.92rem;
      color: #0F172A;
    }
    .author-details span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 11. 常见问题 FAQ 原生手风琴 */
    #faq {
      background: #FFFFFF;
    }
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      background: #F8FAFC;
      overflow: hidden;
    }
    .faq-question {
      padding: 18px 24px;
      width: 100%;
      text-align: left;
      font-size: 1rem;
      font-weight: 600;
      color: #0F172A;
      background: transparent;
      border: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-icon {
      font-size: 1.25rem;
      transition: transform 0.25s ease;
    }
    .faq-answer {
      padding: 0 24px 20px;
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
      display: none;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* 12. 统一底线行动区 (整页唯一集中收口) */
    #cta {
      background: #0B1120;
      color: #FFFFFF;
      padding: 72px 0;
    }
    .cta-card-full {
      background: linear-gradient(135deg, rgba(91, 33, 182, 0.5), rgba(6, 182, 212, 0.2));
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 56px 40px;
      text-align: center;
    }
    .cta-card-full h2 {
      font-size: 2.25rem;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .cta-card-full p {
      max-width: 680px;
      margin: 0 auto 32px;
      color: #CBD5E1;
      font-size: 1.05rem;
    }
    .cta-actions {
      display: flex;
      justify-content: center;
      gap: 18px;
    }

    /* 页脚 */
    .site-footer {
      background: #060911;
      color: #64748B;
      padding: 64px 0 28px;
      font-size: 0.875rem;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-col h4 {
      color: #E2E8F0;
      font-size: 0.95rem;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .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: 0.8125rem;
    }
    .footer-brand {
      color: #F8FAFC;
      font-weight: 700;
      font-size: 1.15rem;
      margin-bottom: 12px;
      display: inline-block;
    }
    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: 1px solid #CBD5E1;
      padding: 6px 12px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      font-size: 1.1rem;
    }

    @media (max-width: 1024px) {
      .hero-grid, .dark-grid, .story-card-wrapper {
        grid-template-columns: 1fr;
      }
      .claim-grid, .products-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .step-timeline, .compliance-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .topbar {
        display: none;
      }
      .main-nav, .nav-actions {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .main-nav.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 74px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        padding: 20px 24px;
        border-bottom: 1px solid var(--border-light);
        box-shadow: var(--shadow-lg);
        gap: 16px;
      }
      .claim-grid, .products-grid, .news-grid, .checklist-wrap, .step-timeline, .compliance-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
      .hero-stats-row {
        flex-direction: column;
        gap: 14px;
      }
      .cta-actions {
        flex-direction: column;
      }
      .section-title {
        font-size: 1.75rem;
      }
    }