/* roulang page: index */
:root {
      --primary: #1D4ED8;
      --primary-hover: #1E40AF;
      --secondary: #0284C7;
      --secondary-light: #0EA5E9;
      --accent: #059669;
      --accent-hover: #047857;
      --bg-main: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-dark: #0F172A;
      --bg-card: #FFFFFF;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-card: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
      --shadow-hover: 0 20px 25px -5px rgba(15, 23, 42, 0.12);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --container-max: 1240px;
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-body);
      line-height: 1.65;
      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;
    }

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

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部信息行 */
    .top-bar {
      background-color: #0B132B;
      color: #94A3B8;
      font-size: 0.825rem;
      height: 38px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 100%;
    }
    .top-status {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .status-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      background-color: #10B981;
      border-radius: 50%;
      box-shadow: 0 0 8px #10B981;
    }
    .top-links {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .top-links a:hover {
      color: #FFFFFF;
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      box-shadow: 0 2px 12px rgba(15, 23, 42, 0.05);
      border-bottom: 1px solid var(--border-color);
      height: 76px;
      display: flex;
      align-items: center;
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-badge {
      font-size: 0.7rem;
      font-weight: 600;
      padding: 3px 8px;
      background: rgba(29, 78, 216, 0.1);
      color: var(--primary);
      border-radius: 999px;
      letter-spacing: 0;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 24px;
    }
    .nav-item a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-body);
      padding: 8px 4px;
      position: relative;
    }
    .nav-item a:hover {
      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;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.925rem;
      cursor: pointer;
      transition: all 0.25s ease;
      border: 1px solid transparent;
      min-height: 44px;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #FFFFFF;
      box-shadow: 0 4px 12px rgba(29, 78, 216, 0.25);
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-1px);
    }
    .btn-secondary {
      background-color: rgba(2, 132, 199, 0.1);
      color: var(--secondary);
      border: 1px solid rgba(2, 132, 199, 0.25);
    }
    .btn-secondary:hover {
      background-color: rgba(2, 132, 199, 0.18);
    }
    .btn-accent {
      background-color: var(--accent);
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(5, 150, 105, 0.3);
    }
    .btn-accent:hover {
      background-color: var(--accent-hover);
      transform: translateY(-2px);
    }

    /* 汉堡按钮 */
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      width: 44px;
      height: 44px;
      cursor: pointer;
      padding: 8px;
    }
    .mobile-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--text-main);
      margin: 5px auto;
      transition: 0.3s;
    }

    /* 板块通用 */
    section {
      padding: 88px 0;
      position: relative;
    }
    .section-light {
      background-color: var(--bg-main);
    }
    .section-white {
      background-color: var(--bg-white);
    }
    .section-dark {
      background-color: var(--bg-dark);
      color: #F1F5F9;
    }
    .section-header {
      max-width: 780px;
      margin: 0 auto 56px auto;
      text-align: center;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      font-size: 0.825rem;
      font-weight: 600;
      color: var(--primary);
      background-color: rgba(29, 78, 216, 0.08);
      border-radius: 999px;
      margin-bottom: 14px;
      letter-spacing: 0.5px;
    }
    .section-dark .section-tag {
      background-color: rgba(14, 165, 233, 0.15);
      color: #38BDF8;
    }
    .section-title {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .section-dark .section-title {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }

    /* 1. Hero 沉浸海报展台 */
    .hero-section {
      position: relative;
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 58, 138, 0.88) 100%),
                  url('/assets/images/bd649d51afcb8ded.webp') center center/cover no-repeat;
      color: #FFFFFF;
      padding: 110px 0 90px 0;
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-badge-row {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 20px;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.25);
      border-radius: 999px;
      font-size: 0.85rem;
      backdrop-filter: blur(4px);
    }
    .hero-title {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 24px;
      letter-spacing: -0.5px;
    }
    .hero-title span {
      background: linear-gradient(90deg, #60A5FA, #34D399);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.125rem;
      line-height: 1.8;
      color: #E2E8F0;
      margin-bottom: 36px;
      max-width: 620px;
    }
    .hero-btn-group {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 40px;
    }
    .hero-metrics-pill {
      display: flex;
      gap: 28px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.15);
    }
    .hero-metric-item h4 {
      font-size: 1.5rem;
      font-weight: 800;
      color: #38BDF8;
    }
    .hero-metric-item p {
      font-size: 0.8rem;
      color: #CBD5E1;
    }
    .hero-poster-frame {
      position: relative;
      border-radius: var(--radius-lg);
      padding: 10px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.2);
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    }
    .hero-poster-frame img {
      border-radius: var(--radius-md);
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .hero-poster-overlay {
      position: absolute;
      bottom: 24px;
      left: 24px;
      right: 24px;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(8px);
      padding: 16px 20px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.15);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    /* 2. 搜索与直达入口条 */
    .quick-entry-section {
      background: #FFFFFF;
      padding: 36px 0;
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.03);
    }
    .entry-bar-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      background: var(--bg-main);
      padding: 16px 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }
    .entry-label {
      font-weight: 700;
      color: var(--text-main);
      white-space: nowrap;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .entry-tags {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
    }
    .entry-link-chip {
      padding: 6px 14px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: 999px;
      font-size: 0.85rem;
      font-weight: 500;
      color: var(--text-body);
    }
    .entry-link-chip:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: rgba(29, 78, 216, 0.04);
    }

    /* 3. 系统全景矩阵（左右非平衡） */
    .overview-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .overview-card-content h3 {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.35;
      margin-bottom: 20px;
    }
    .overview-text {
      font-size: 1.025rem;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 28px;
    }
    .overview-params {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 32px;
    }
    .param-box {
      background: var(--bg-main);
      border-left: 3px solid var(--primary);
      padding: 14px 18px;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    }
    .param-box h5 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .param-box p {
      font-size: 0.825rem;
      color: var(--text-muted);
    }
    .overview-media {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-hover);
      border: 1px solid var(--border-color);
    }
    .overview-media img {
      width: 100%;
      height: 420px;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .overview-media:hover img {
      transform: scale(1.03);
    }

    /* 4. 优势六矩阵 */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .advantage-card {
      background: #FFFFFF;
      padding: 36px 30px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-card);
      transition: all 0.3s ease;
      position: relative;
    }
    .advantage-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(29, 78, 216, 0.3);
    }
    .adv-icon-wrap {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-sm);
      background: linear-gradient(135deg, rgba(29, 78, 216, 0.1), rgba(2, 132, 199, 0.1));
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.3rem;
      margin-bottom: 20px;
    }
    .advantage-card h4 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .advantage-card p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 5. 解决方案对比矩阵 */
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .solution-package-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 40px 32px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-card);
      display: flex;
      flex-direction: column;
      position: relative;
      transition: all 0.3s ease;
    }
    .solution-package-card.popular {
      border: 2px solid var(--primary);
      box-shadow: 0 15px 35px -5px rgba(29, 78, 216, 0.15);
    }
    .popular-tag {
      position: absolute;
      top: -14px;
      right: 28px;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      color: #FFFFFF;
      padding: 4px 14px;
      border-radius: 999px;
      font-size: 0.75rem;
      font-weight: 700;
    }
    .solution-title-box h3 {
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .solution-tag-label {
      font-size: 0.8rem;
      color: var(--primary);
      font-weight: 600;
      background: rgba(29, 78, 216, 0.08);
      display: inline-block;
      padding: 2px 10px;
      border-radius: 4px;
      margin-bottom: 18px;
    }
    .solution-desc-p {
      font-size: 0.925rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      min-height: 48px;
    }
    .solution-feature-list {
      list-style: none;
      margin-bottom: 32px;
      flex-grow: 1;
    }
    .solution-feature-list li {
      font-size: 0.9rem;
      color: var(--text-body);
      padding: 8px 0;
      border-bottom: 1px dashed #F1F5F9;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .solution-feature-list li::before {
      content: "✓";
      color: var(--accent);
      font-weight: 800;
    }

    /* 6. 深色技术底座 */
    .arch-flow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 48px;
    }
    .arch-flow-box {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      padding: 28px 22px;
      text-align: left;
      position: relative;
    }
    .arch-flow-box .step-number {
      font-size: 1.8rem;
      font-weight: 900;
      color: #38BDF8;
      opacity: 0.6;
      margin-bottom: 12px;
    }
    .arch-flow-box h4 {
      font-size: 1.15rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 10px;
    }
    .arch-flow-box p {
      font-size: 0.85rem;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* 7. 用户落地故事与案例 */
    .case-story-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      margin-bottom: 40px;
      display: grid;
      grid-template-columns: 1fr 1fr;
    }
    .case-story-card.reverse {
      direction: rtl;
    }
    .case-story-card.reverse .case-content {
      direction: ltr;
    }
    .case-media img {
      width: 100%;
      height: 100%;
      min-height: 340px;
      object-fit: cover;
    }
    .case-content {
      padding: 44px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .case-category {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--secondary);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 8px;
    }
    .case-content h3 {
      font-size: 1.65rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
    }
    .case-content p {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .case-metrics-tags {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
    }
    .case-stat-badge {
      background: var(--bg-main);
      border: 1px solid var(--border-color);
      padding: 8px 16px;
      border-radius: var(--radius-sm);
    }
    .case-stat-badge strong {
      display: block;
      font-size: 1.15rem;
      color: var(--primary);
    }
    .case-stat-badge span {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* 8. 效能数据计量面板 */
    .metrics-board {
      background: linear-gradient(135deg, #1E40AF 0%, #0F172A 100%);
      border-radius: var(--radius-lg);
      padding: 56px 40px;
      box-shadow: var(--shadow-hover);
      color: #FFFFFF;
    }
    .metrics-board-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .board-metric-cell {
      border-right: 1px solid rgba(255, 255, 255, 0.15);
      padding: 0 16px;
    }
    .board-metric-cell:last-child {
      border-right: none;
    }
    .board-metric-val {
      font-size: 2.75rem;
      font-weight: 900;
      color: #38BDF8;
      line-height: 1.1;
      margin-bottom: 8px;
      font-family: "Segoe UI", sans-serif;
    }
    .board-metric-title {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: #FFFFFF;
    }
    .board-metric-desc {
      font-size: 0.825rem;
      color: #CBD5E1;
      line-height: 1.5;
    }

    /* 9. 客户评价口碑 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .review-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-card);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-stars {
      color: #F59E0B;
      font-size: 1.1rem;
      margin-bottom: 16px;
      letter-spacing: 2px;
    }
    .review-quote {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.75;
      margin-bottom: 24px;
    }
    .reviewer-info {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid #F1F5F9;
      padding-top: 18px;
    }
    .reviewer-avatar {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #E2E8F0;
      overflow: hidden;
      flex-shrink: 0;
    }
    .reviewer-avatar img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .reviewer-meta h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .reviewer-meta span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 10. 策略资讯与行业指南 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .news-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .news-card-img {
      height: 200px;
      overflow: hidden;
    }
    .news-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .news-card:hover .news-card-img img {
      transform: scale(1.05);
    }
    .news-card-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-meta-row {
      display: flex;
      justify-content: space-between;
      font-size: 0.775rem;
      color: var(--text-muted);
      margin-bottom: 12px;
    }
    .news-card-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.45;
      margin-bottom: 12px;
    }
    .news-card-excerpt {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      flex-grow: 1;
    }
    .news-card-link {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 11. 安全与合规保障 */
    .security-badges-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .security-badge-item {
      background: #FFFFFF;
      padding: 28px 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .sec-icon {
      font-size: 1.8rem;
      margin-bottom: 12px;
      color: var(--primary);
    }
    .security-badge-item h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .security-badge-item p {
      font-size: 0.825rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 12. 生态伙伴 */
    .partners-wall {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 20px;
      align-items: center;
    }
    .partner-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.95rem;
      color: #64748B;
      transition: all 0.25s ease;
      user-select: none;
    }
    .partner-item:hover {
      color: var(--primary);
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
      transform: translateY(-2px);
    }

    /* 13. 常见问题手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-accordion-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      padding: 22px 28px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: background-color 0.2s ease;
    }
    .faq-question:hover {
      background-color: #F8FAFC;
    }
    .faq-arrow {
      font-size: 1.25rem;
      transition: transform 0.3s ease;
      color: var(--primary);
    }
    .faq-answer {
      display: none;
      padding: 0 28px 24px 28px;
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.75;
      border-top: 1px solid #F1F5F9;
      padding-top: 18px;
    }
    .faq-accordion-item.active .faq-answer {
      display: block;
    }
    .faq-accordion-item.active .faq-arrow {
      transform: rotate(180deg);
    }

    /* 14. 转化呼吁卡片 */
    .cta-outer-card {
      background: linear-gradient(135deg, #0F172A 0%, #1E3A8A 60%, #0369A1 100%);
      border-radius: var(--radius-lg);
      padding: 72px 48px;
      color: #FFFFFF;
      text-align: center;
      position: relative;
      overflow: hidden;
      box-shadow: 0 20px 40px -10px rgba(15, 23, 42, 0.4);
    }
    .cta-outer-card::before {
      content: "";
      position: absolute;
      top: -50%;
      left: -50%;
      width: 200%;
      height: 200%;
      background: radial-gradient(circle, rgba(56, 189, 248, 0.12) 0%, transparent 60%);
      pointer-events: none;
    }
    .cta-content-wrap {
      position: relative;
      z-index: 2;
      max-width: 760px;
      margin: 0 auto;
    }
    .cta-content-wrap h2 {
      font-size: 2.35rem;
      font-weight: 800;
      margin-bottom: 20px;
      line-height: 1.3;
    }
    .cta-content-wrap p {
      font-size: 1.05rem;
      color: #CBD5E1;
      margin-bottom: 36px;
      line-height: 1.7;
    }
    .cta-form-row {
      display: flex;
      justify-content: center;
      gap: 12px;
      max-width: 580px;
      margin: 0 auto 24px auto;
    }
    .cta-input {
      flex: 1;
      height: 50px;
      padding: 0 20px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.3);
      background: rgba(255, 255, 255, 0.95);
      color: var(--text-main);
      font-size: 0.95rem;
      outline: none;
    }
    .cta-input:focus {
      border-color: #38BDF8;
      box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.3);
    }
    .cta-security-tag {
      font-size: 0.8rem;
      color: #94A3B8;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
    }

    /* 页脚 */
    .site-footer {
      background-color: #0A0F1D;
      color: #94A3B8;
      padding: 72px 0 36px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.9rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.3fr 1fr 1.2fr 1fr;
      gap: 48px;
      margin-bottom: 56px;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 22px;
      letter-spacing: 0.5px;
    }
    .footer-col p {
      line-height: 1.75;
      margin-bottom: 18px;
      font-size: 0.875rem;
    }
    .footer-links-list {
      list-style: none;
    }
    .footer-links-list li {
      margin-bottom: 12px;
    }
    .footer-links-list a:hover {
      color: #FFFFFF;
      padding-left: 4px;
    }
    .footer-contact-item {
      display: flex;
      margin-bottom: 12px;
      gap: 8px;
      font-size: 0.875rem;
      line-height: 1.6;
    }
    .footer-trust-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
    }
    .trust-chip {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 10px;
      border-radius: var(--radius-sm);
      text-align: center;
      font-size: 0.775rem;
      color: #CBD5E1;
    }
    .footer-bottom-bar {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.8rem;
    }
    .footer-bottom-bar a {
      color: #94A3B8;
    }
    .footer-bottom-bar a:hover {
      color: #FFFFFF;
    }

    /* 移动端响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
      }
      .hero-desc {
        margin-left: auto;
        margin-right: auto;
      }
      .hero-btn-group {
        justify-content: center;
      }
      .hero-metrics-pill {
        justify-content: center;
      }
      .advantages-grid, .solutions-grid, .reviews-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .arch-flow-grid, .security-badges-row {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-board-grid {
        grid-template-columns: repeat(2, 1fr);
        row-gap: 28px;
      }
      .board-metric-cell:nth-child(2) {
        border-right: none;
      }
      .partners-wall {
        grid-template-columns: repeat(3, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        border-bottom: 1px solid var(--border-color);
        gap: 16px;
        align-items: flex-start;
      }
      .nav-menu.active {
        display: flex;
      }
      .nav-actions {
        display: none;
      }
      .hero-title {
        font-size: 2.25rem;
      }
      .overview-grid {
        grid-template-columns: 1fr;
      }
      .case-story-card, .case-story-card.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
      }
      .case-content {
        padding: 28px 20px;
      }
      .advantages-grid, .solutions-grid, .reviews-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .arch-flow-grid, .security-badges-row, .partners-wall {
        grid-template-columns: 1fr;
      }
      .metrics-board-grid {
        grid-template-columns: 1fr;
      }
      .board-metric-cell {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.15);
        padding-bottom: 20px;
      }
      .board-metric-cell:last-child {
        border-bottom: none;
        padding-bottom: 0;
      }
      .cta-form-row {
        flex-direction: column;
      }
      .cta-outer-card {
        padding: 44px 20px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }