/* roulang page: index */
:root {
      --primary: #0F172A;
      --primary-light: #1E293B;
      --accent-blue: #0EA5E9;
      --accent-blue-hover: #0284C7;
      --accent-green: #10B981;
      --accent-orange: #F59E0B;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-dark: #0B1120;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --text-light: #F8FAFC;
      --border-color: #E2E8F0;
      --border-dark: #334155;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
      --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -2px rgba(0,0,0,0.05);
      --shadow-lg: 0 10px 25px -5px rgba(14,165,233,0.15);
      --shadow-dark: 0 15px 30px rgba(0,0,0,0.3);
      --container-max: 1280px;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans CN", sans-serif;
      color: var(--text-body);
      background-color: var(--bg-light);
      line-height: 1.75;
    }

    body {
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

    /* 顶部通栏 */
    .top-bar {
      background-color: var(--primary);
      color: #94A3B8;
      font-size: 0.8125rem;
      padding: 0.5rem 0;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .top-bar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .top-bar-badges span {
      margin-right: 1rem;
      display: inline-flex;
      align-items: center;
      gap: 0.25rem;
    }

    /* 导航栏 */
    .main-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-weight: 800;
      font-size: 1.35rem;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .logo-icon {
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, var(--accent-blue), #0284C7);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-weight: 900;
      font-size: 1.1rem;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 1.75rem;
      list-style: none;
    }
    .nav-links a {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 0.5rem 0.25rem;
      position: relative;
    }
    .nav-links a:hover {
      color: var(--accent-blue);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent-blue);
      transition: width 0.3s;
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .nav-btn {
      background: var(--accent-blue);
      color: #FFF !important;
      padding: 0.65rem 1.4rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.9375rem;
      box-shadow: 0 4px 14px rgba(14,165,233,0.35);
    }
    .nav-btn:hover {
      background: var(--accent-blue-hover);
      transform: translateY(-1px);
    }

    /* 板块通用 */
    section {
      padding: 5.5rem 0;
      position: relative;
      scroll-margin-top: 76px;
    }
    .section-white {
      background-color: var(--bg-white);
    }
    .section-light {
      background-color: var(--bg-light);
    }
    .section-dark {
      background-color: var(--bg-dark);
      color: var(--text-light);
    }

    .section-header {
      margin-bottom: 3.5rem;
      max-width: 820px;
    }
    .section-header.center {
      margin-left: auto;
      margin-right: auto;
      text-align: center;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8125rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--accent-blue);
      background: rgba(14,165,233,0.1);
      padding: 0.35rem 0.85rem;
      border-radius: 50px;
      margin-bottom: 0.75rem;
    }
    .section-dark .section-tag {
      background: rgba(14,165,233,0.2);
      color: #38BDF8;
    }
    .section-title {
      font-size: 2.125rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 1rem;
      letter-spacing: -0.5px;
    }
    .section-dark .section-title {
      color: #FFF;
    }
    .section-desc {
      font-size: 1.0625rem;
      color: var(--text-muted);
      line-height: 1.75;
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      padding: 0.85rem 1.85rem;
      font-size: 1rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
    }
    .btn-primary {
      background: var(--accent-blue);
      color: #FFF;
      box-shadow: 0 4px 14px rgba(14,165,233,0.35);
    }
    .btn-primary:hover {
      background: var(--accent-blue-hover);
      box-shadow: 0 6px 20px rgba(14,165,233,0.45);
      transform: translateY(-2px);
    }
    .btn-secondary {
      background: rgba(255,255,255,0.12);
      color: #FFF;
      border-color: rgba(255,255,255,0.25);
      backdrop-filter: blur(8px);
    }
    .btn-secondary:hover {
      background: rgba(255,255,255,0.2);
      border-color: #FFF;
    }
    .btn-outline {
      border-color: var(--border-color);
      color: var(--text-main);
      background: #FFF;
    }
    .btn-outline:hover {
      border-color: var(--accent-blue);
      color: var(--accent-blue);
    }

    /* 1. HERO 路线图预告与核心首屏 */
    #hero {
      position: relative;
      background: linear-gradient(135deg, rgba(11,17,32,0.92) 0%, rgba(15,23,42,0.85) 100%), url('/assets/images/7e012c9c98b5f717.jpg') center/cover no-repeat;
      color: #FFF;
      padding: 6.5rem 0 6rem 0;
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 3.5rem;
      align-items: center;
    }
    .hero-h1 {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 1.25rem;
      letter-spacing: -1px;
    }
    .hero-h1 span {
      background: linear-gradient(90deg, #38BDF8, #818CF8);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-intro {
      font-size: 1.125rem;
      color: #CBD5E1;
      margin-bottom: 2rem;
      line-height: 1.8;
    }
    .hero-cta-group {
      display: flex;
      gap: 1rem;
      margin-bottom: 2.5rem;
      flex-wrap: wrap;
    }
    .hero-capsules {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
    }
    .hero-capsule {
      background: rgba(255,255,255,0.07);
      border: 1px solid rgba(255,255,255,0.15);
      padding: 0.5rem 1rem;
      border-radius: 50px;
      font-size: 0.875rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      color: #E2E8F0;
    }
    .hero-capsule-dot {
      width: 8px;
      height: 8px;
      background: var(--accent-green);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--accent-green);
    }
    /* 路线图更新卡片 */
    .roadmap-box {
      background: rgba(15,23,42,0.75);
      border: 1px solid rgba(255,255,255,0.15);
      border-radius: var(--radius-lg);
      padding: 2rem;
      backdrop-filter: blur(16px);
      box-shadow: var(--shadow-dark);
    }
    .roadmap-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 1.5rem;
      padding-bottom: 1rem;
      border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    .roadmap-tag {
      font-size: 0.75rem;
      background: var(--accent-blue);
      color: #FFF;
      padding: 0.2rem 0.6rem;
      border-radius: 4px;
      font-weight: 600;
    }
    .roadmap-timeline {
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
    }
    .roadmap-item {
      position: relative;
      padding-left: 1.5rem;
    }
    .roadmap-item::before {
      content: '';
      position: absolute;
      left: 0;
      top: 6px;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent-blue);
    }
    .roadmap-ver {
      font-size: 0.875rem;
      font-weight: 700;
      color: #38BDF8;
    }
    .roadmap-text {
      font-size: 0.875rem;
      color: #CBD5E1;
      margin-top: 0.2rem;
    }

    /* 2. 安全主张与架构认证 */
    .security-claims-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .claim-card {
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2.25rem;
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s, box-shadow 0.3s;
    }
    .claim-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: var(--accent-blue);
    }
    .claim-icon {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background: rgba(14,165,233,0.1);
      color: var(--accent-blue);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      font-weight: bold;
      margin-bottom: 1.25rem;
    }
    .claim-card h3 {
      font-size: 1.25rem;
      color: var(--text-main);
      margin-bottom: 0.75rem;
    }
    .claim-card p {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 3. 检查项与部署规范验收 */
    .checklist-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }
    .checklist-img-wrap {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
    }
    .check-list-items {
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
    }
    .check-item {
      display: flex;
      gap: 1rem;
      background: #FFF;
      padding: 1.25rem 1.5rem;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }
    .check-badge {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: rgba(16,185,129,0.15);
      color: var(--accent-green);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      flex-shrink: 0;
    }
    .check-item h4 {
      font-size: 1.05rem;
      color: var(--text-main);
      margin-bottom: 0.25rem;
    }
    .check-item p {
      font-size: 0.875rem;
      color: var(--text-muted);
    }

    /* 4. 合规徽章与技术底座标准 */
    .badges-band {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .badge-card {
      background: rgba(255,255,255,0.03);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 1.75rem;
      text-align: center;
    }
    .badge-card-icon {
      font-size: 2rem;
      margin-bottom: 0.75rem;
      color: var(--accent-blue);
    }
    .badge-card h4 {
      font-size: 1.1rem;
      margin-bottom: 0.5rem;
      color: #FFF;
    }
    .badge-card p {
      font-size: 0.875rem;
      color: #94A3B8;
    }

    /* 5. 核心技术优势矩阵 */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .feature-box {
      background: var(--bg-light);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem;
      transition: all 0.3s;
    }
    .feature-box:hover {
      background: #FFF;
      border-color: var(--accent-blue);
      box-shadow: var(--shadow-lg);
    }
    .feature-meta {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--accent-blue);
      margin-top: 1rem;
      padding-top: 0.75rem;
      border-top: 1px dashed var(--border-color);
    }

    /* 6. 产品方案卡片 */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .prod-card {
      background: #FFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .prod-img {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .prod-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .prod-card:hover .prod-img img {
      transform: scale(1.05);
    }
    .prod-body {
      padding: 1.75rem;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .prod-body h3 {
      font-size: 1.25rem;
      color: var(--text-main);
      margin-bottom: 0.75rem;
    }
    .prod-body p {
      font-size: 0.9375rem;
      color: var(--text-muted);
      margin-bottom: 1.25rem;
    }
    .prod-features {
      list-style: none;
      margin-top: auto;
      margin-bottom: 1.25rem;
      display: flex;
      flex-direction: column;
      gap: 0.5rem;
      font-size: 0.875rem;
      color: var(--text-body);
    }
    .prod-features li::before {
      content: '✔ ';
      color: var(--accent-blue);
      font-weight: bold;
    }

    /* 7. 空间引擎深度剖析 (深色) */
    .deep-dive-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .metric-strip {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.25rem;
      margin-top: 2rem;
    }
    .metric-item {
      background: rgba(255,255,255,0.05);
      border: 1px solid var(--border-dark);
      padding: 1.25rem;
      border-radius: var(--radius-sm);
    }
    .metric-num {
      font-size: 1.75rem;
      font-weight: 800;
      color: #38BDF8;
    }
    .metric-label {
      font-size: 0.8125rem;
      color: #94A3B8;
      margin-top: 0.25rem;
    }

    /* 8. 真实用户故事与场景落地 */
    .stories-container {
      display: flex;
      flex-direction: column;
      gap: 3rem;
    }
    .story-card {
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 3rem;
      align-items: center;
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2.5rem;
      box-shadow: var(--shadow-sm);
    }
    .story-card.reverse {
      grid-template-columns: 1.1fr 1fr;
    }
    .story-img {
      border-radius: var(--radius-md);
      overflow: hidden;
    }
    .kpi-row {
      display: flex;
      gap: 1.5rem;
      margin-top: 1.5rem;
    }
    .kpi-box {
      border-left: 3px solid var(--accent-blue);
      padding-left: 1rem;
    }
    .kpi-value {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--accent-blue);
    }
    .kpi-text {
      font-size: 0.8125rem;
      color: var(--text-muted);
    }

    /* 9. 统计数据条 */
    .stats-bar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      text-align: center;
    }
    .stat-card {
      background: #FFF;
      padding: 2.5rem 1.5rem;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .stat-digit {
      font-size: 2.75rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 0.5rem;
    }
    .stat-digit span {
      font-size: 1.5rem;
      color: var(--accent-blue);
    }
    .stat-desc {
      font-size: 0.9375rem;
      color: var(--text-muted);
    }

    /* 10. 边界说明与技术兼容性规范 */
    .boundary-table {
      width: 100%;
      border-collapse: collapse;
      background: #FFF;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
    }
    .boundary-table th, .boundary-table td {
      padding: 1.25rem 1.5rem;
      text-align: left;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.9375rem;
    }
    .boundary-table th {
      background: var(--bg-light);
      font-weight: 700;
      color: var(--text-main);
    }
    .boundary-table tr:last-child td {
      border-bottom: none;
    }

    /* 11. 行业前沿与版本资讯 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .news-card {
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-img {
      height: 180px;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-content {
      padding: 1.5rem;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .news-date {
      font-size: 0.8125rem;
      color: var(--accent-blue);
      margin-bottom: 0.5rem;
    }
    .news-content h3 {
      font-size: 1.15rem;
      color: var(--text-main);
      margin-bottom: 0.75rem;
      line-height: 1.4;
    }
    .news-content p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 12. 实施交付与部署四步流程 */
    .process-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      position: relative;
    }
    .step-item {
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem 1.5rem;
      position: relative;
    }
    .step-num {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--primary);
      color: #FFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      margin-bottom: 1.25rem;
    }
    .step-item h4 {
      font-size: 1.15rem;
      color: var(--text-main);
      margin-bottom: 0.5rem;
    }
    .step-item p {
      font-size: 0.875rem;
      color: var(--text-muted);
    }

    /* 13. 客户评价与社会认同 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .t-card {
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem;
      box-shadow: var(--shadow-sm);
    }
    .t-stars {
      color: var(--accent-orange);
      font-size: 1rem;
      margin-bottom: 1rem;
    }
    .t-quote {
      font-size: 0.9375rem;
      color: var(--text-body);
      margin-bottom: 1.5rem;
      line-height: 1.7;
    }
    .t-author {
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }
    .t-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      color: var(--text-muted);
    }
    .t-info h4 {
      font-size: 0.9375rem;
      color: var(--text-main);
    }
    .t-info span {
      font-size: 0.8125rem;
      color: var(--text-muted);
    }

    /* 14. 常见问题解答 FAQ */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    .faq-accordion {
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
    }
    .faq-header {
      padding: 1.25rem 1.5rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
      transition: background 0.2s;
    }
    .faq-header:hover {
      background: var(--bg-light);
    }
    .faq-header h3 {
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
    }
    .faq-toggle-icon {
      font-size: 1.25rem;
      font-weight: bold;
      color: var(--text-muted);
      transition: transform 0.3s;
    }
    .faq-content {
      padding: 0 1.5rem 1.5rem 1.5rem;
      color: var(--text-muted);
      font-size: 0.9375rem;
      line-height: 1.75;
      display: none;
    }
    .faq-accordion.active .faq-content {
      display: block;
    }
    .faq-accordion.active .faq-toggle-icon {
      transform: rotate(45deg);
      color: var(--accent-blue);
    }

    /* 15. CTA 预约演示与转化表单 */
    #cta {
      background: linear-gradient(135deg, var(--bg-dark) 0%, #1E293B 100%);
      color: #FFF;
      padding: 5rem 0;
    }
    .cta-box {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 3.5rem;
      align-items: center;
    }
    .cta-form {
      background: rgba(255,255,255,0.05);
      border: 1px solid var(--border-dark);
      padding: 2.25rem;
      border-radius: var(--radius-lg);
      backdrop-filter: blur(10px);
    }
    .form-group {
      margin-bottom: 1.25rem;
    }
    .form-group label {
      display: block;
      font-size: 0.875rem;
      margin-bottom: 0.5rem;
      color: #CBD5E1;
    }
    .form-control {
      width: 100%;
      padding: 0.85rem 1rem;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-dark);
      background: rgba(15,23,42,0.8);
      color: #FFF;
      font-size: 0.9375rem;
    }
    .form-control:focus {
      outline: none;
      border-color: var(--accent-blue);
    }
    .form-note {
      font-size: 0.8125rem;
      color: #94A3B8;
      margin-top: 0.75rem;
    }

    /* 页脚 */
    footer {
      background-color: #060911;
      color: #94A3B8;
      font-size: 0.875rem;
      padding: 4.5rem 0 2rem 0;
      border-top: 1px solid rgba(255,255,255,0.06);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-col h4 {
      color: #FFF;
      font-size: 1.05rem;
      margin-bottom: 1.25rem;
      font-weight: 700;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }
    .footer-links a:hover {
      color: var(--accent-blue);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.08);
      padding-top: 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.8125rem;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid, .checklist-wrapper, .deep-dive-grid, .story-card, .story-card.reverse, .cta-box {
        grid-template-columns: 1fr;
        gap: 2.5rem;
      }
      .features-grid, .products-grid, .news-grid, .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .badges-band, .stats-bar-grid, .process-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .top-bar { display: none; }
      .nav-links { display: none; }
      .hero-h1 { font-size: 2.25rem; }
      .section-title { font-size: 1.75rem; }
      .security-claims-grid, .features-grid, .products-grid, .news-grid, .testimonials-grid, .badges-band, .stats-bar-grid, .process-steps {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }