/* roulang page: index */
:root {
      --primary: #FF6B00;
      --primary-hover: #E55F00;
      --secondary: #00B578;
      --secondary-dark: #009663;
      --dark-slate: #182230;
      --dark-card: #1F2E40;
      --text-main: #0F172A;
      --text-muted: #475467;
      --text-light: #94A3B8;
      --bg-light: #F8F9FA;
      --bg-alt: #F1F5F9;
      --white: #FFFFFF;
      --border: #E2E8F0;
      --border-dark: #334155;
      --shadow-sm: 0 1px 3px rgba(16, 24, 40, 0.05);
      --shadow-md: 0 4px 6px -2px rgba(16, 24, 40, 0.05), 0 10px 15px -3px rgba(16, 24, 40, 0.08);
      --shadow-lg: 0 12px 24px -4px rgba(16, 24, 40, 0.08);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-full: 9999px;
    }

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

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

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

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

    ul, ol {
      list-style: none;
    }

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

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

    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部辅助条与粘性主导航 */
    .topbar {
      background-color: var(--dark-slate);
      color: #CBD5E1;
      font-size: 0.8125rem;
      height: 38px;
      line-height: 38px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .topbar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .topbar-info {
      display: flex;
      gap: 20px;
    }
    .topbar-badge {
      background: rgba(0, 181, 120, 0.2);
      color: #34D399;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      font-size: 0.75rem;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
      border-bottom: 1px solid var(--border);
    }
    .nav-wrapper {
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 700;
      font-size: 1.25rem;
      color: var(--dark-slate);
    }
    .brand-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary) 0%, #FF8C38 100%);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--white);
      font-weight: 900;
      font-size: 1.1rem;
      box-shadow: 0 4px 10px rgba(255, 107, 0, 0.3);
    }
    .brand-text span {
      display: block;
      font-size: 0.75rem;
      color: var(--text-light);
      font-weight: 500;
      letter-spacing: 0.5px;
    }

    .nav-links {
      display: flex;
      gap: 26px;
      align-items: center;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      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;
      width: 100%;
      height: 2px;
      background-color: var(--primary);
      border-radius: 2px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-full);
      font-size: 0.9375rem;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
      white-space: nowrap;
    }
    .btn-primary {
      background-color: var(--primary);
      color: var(--white);
      box-shadow: 0 4px 12px rgba(255, 107, 0, 0.25);
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(255, 107, 0, 0.35);
    }
    .btn-secondary {
      background-color: var(--secondary);
      color: var(--white);
    }
    .btn-secondary:hover {
      background-color: var(--secondary-dark);
      transform: translateY(-2px);
    }
    .btn-outline {
      border-color: var(--border);
      background-color: var(--white);
      color: var(--text-main);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    /* 移动端汉堡按钮 */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--dark-slate);
      margin: 5px 0;
      transition: 0.3s;
    }

    /* 板块通用样式 */
    section {
      padding: 85px 0;
      position: relative;
    }
    .section-header {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 50px auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8125rem;
      font-weight: 700;
      letter-spacing: 1px;
      text-transform: uppercase;
      padding: 4px 14px;
      border-radius: var(--radius-full);
      background: rgba(255, 107, 0, 0.1);
      color: var(--primary);
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 2.125rem;
      font-weight: 700;
      color: var(--dark-slate);
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 1. Hero 开发者/教务中枢规范 */
    .hero-section {
      padding: 70px 0 90px;
      background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
      overflow: hidden;
      border-bottom: 1px solid var(--border);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 2.75rem;
      line-height: 1.25;
      font-weight: 800;
      color: var(--dark-slate);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-h1 .highlight {
      color: var(--primary);
    }
    .hero-lead {
      font-size: 1.1rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 30px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 36px;
    }
    .hero-points {
      display: flex;
      gap: 24px;
      padding-top: 20px;
      border-top: 1px solid var(--border);
      font-size: 0.875rem;
      color: var(--text-muted);
    }
    .hero-points li {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .hero-points li::before {
      content: '✓';
      color: var(--secondary);
      font-weight: bold;
    }

    /* 首屏代码与状态模拟组件 */
    .console-mockup {
      background: #111827;
      border-radius: var(--radius-lg);
      box-shadow: 0 20px 40px rgba(15, 23, 42, 0.25);
      border: 1px solid #374151;
      overflow: hidden;
    }
    .console-header {
      background: #1F2937;
      padding: 12px 18px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid #374151;
    }
    .console-dots {
      display: flex;
      gap: 6px;
    }
    .console-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }
    .dot-red { background: #EF4444; }
    .dot-yellow { background: #F59E0B; }
    .dot-green { background: #10B981; }
    .console-title {
      font-size: 0.75rem;
      font-family: monospace;
      color: #9CA3AF;
    }
    .console-body {
      padding: 20px;
      font-family: Consolas, Monaco, "Courier New", Courier, monospace;
      font-size: 0.85rem;
      color: #E5E7EB;
      line-height: 1.7;
    }
    .console-line { margin-bottom: 8px; }
    .token-keyword { color: #F472B6; }
    .token-fn { color: #60A5FA; }
    .token-str { color: #34D399; }
    .token-num { color: #FBBF24; }
    .token-comment { color: #6B7280; font-style: italic; }
    .console-status-box {
      margin-top: 16px;
      padding: 12px;
      background: rgba(16, 185, 129, 0.1);
      border: 1px solid rgba(16, 185, 129, 0.3);
      border-radius: var(--radius-sm);
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8rem;
    }

    /* 2. 搜索与功能直达入口 */
    .search-matrix-section {
      background-color: var(--white);
      padding: 40px 0;
      border-bottom: 1px solid var(--border);
    }
    .search-bar-wrap {
      max-width: 720px;
      margin: 0 auto 24px auto;
      position: relative;
    }
    .search-input-box {
      display: flex;
      align-items: center;
      background: var(--bg-alt);
      border: 2px solid var(--border);
      border-radius: var(--radius-full);
      padding: 6px 8px 6px 20px;
      transition: all 0.2s;
    }
    .search-input-box:focus-within {
      border-color: var(--primary);
      background: var(--white);
      box-shadow: 0 0 0 4px rgba(255, 107, 0, 0.1);
    }
    .search-input-box input {
      flex: 1;
      border: none;
      background: transparent;
      outline: none;
      font-size: 0.95rem;
      color: var(--text-main);
    }
    .hot-chips {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      font-size: 0.85rem;
    }
    .hot-chip-label {
      color: var(--text-light);
      line-height: 28px;
    }
    .chip {
      background: var(--bg-alt);
      color: var(--text-muted);
      padding: 4px 14px;
      border-radius: var(--radius-full);
      transition: all 0.2s;
    }
    .chip:hover {
      background: rgba(255, 107, 0, 0.1);
      color: var(--primary);
    }

    /* 3. 产品体系与系统概览 */
    .about-section {
      background-color: var(--white);
    }
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .about-left-specs {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .spec-card {
      background: var(--bg-light);
      border: 1px solid var(--border);
      border-left: 4px solid var(--primary);
      padding: 18px 24px;
      border-radius: 0 var(--radius-md) var(--radius-md) 0;
      transition: transform 0.2s;
    }
    .spec-card:hover {
      transform: translateX(4px);
    }
    .spec-card h4 {
      font-size: 1.05rem;
      margin-bottom: 6px;
      color: var(--dark-slate);
    }
    .spec-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .about-media-box {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border);
    }
    .about-media-box img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .media-badge {
      position: absolute;
      bottom: 20px;
      left: 20px;
      background: rgba(24, 34, 48, 0.9);
      backdrop-filter: blur(8px);
      padding: 12px 20px;
      border-radius: var(--radius-md);
      color: var(--white);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .media-badge p {
      font-size: 0.8rem;
      color: #94A3B8;
    }
    .media-badge strong {
      font-size: 1.1rem;
      color: var(--secondary);
    }

    /* 4. 核心功能与教务矩阵 2x3 网格 */
    .features-section {
      background-color: var(--bg-alt);
    }
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feature-card {
      background: var(--white);
      border-radius: var(--radius-md);
      padding: 30px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(255, 107, 0, 0.4);
    }
    .feat-icon {
      width: 48px;
      height: 48px;
      background: rgba(255, 107, 0, 0.1);
      color: var(--primary);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 20px;
    }
    .feature-card h3 {
      font-size: 1.2rem;
      margin-bottom: 12px;
      color: var(--dark-slate);
    }
    .feature-card p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      flex-grow: 1;
    }
    .feat-list {
      border-top: 1px solid var(--border);
      padding-top: 14px;
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .feat-list li {
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .feat-list li::before {
      content: '•';
      color: var(--primary);
      font-weight: bold;
    }

    /* 5. 解决方案套件三列 */
    .solutions-section {
      background-color: var(--white);
    }
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      align-items: stretch;
    }
    .solution-card {
      background: var(--bg-light);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      display: flex;
      flex-direction: column;
      position: relative;
      transition: all 0.3s ease;
    }
    .solution-card.featured {
      background: var(--white);
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-lg);
      transform: scale(1.03);
    }
    .featured-tag {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary);
      color: var(--white);
      font-size: 0.75rem;
      font-weight: bold;
      padding: 4px 14px;
      border-radius: var(--radius-full);
      box-shadow: 0 4px 8px rgba(255, 107, 0, 0.3);
    }
    .sol-header {
      text-align: center;
      margin-bottom: 24px;
      padding-bottom: 20px;
      border-bottom: 1px solid var(--border);
    }
    .sol-header h3 {
      font-size: 1.4rem;
      color: var(--dark-slate);
      margin-bottom: 8px;
    }
    .sol-header .sol-for {
      font-size: 0.875rem;
      color: var(--text-light);
    }
    .sol-list {
      margin-bottom: 30px;
      flex-grow: 1;
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .sol-list li {
      margin-bottom: 12px;
      display: flex;
      align-items: flex-start;
      gap: 8px;
    }
    .sol-list li span.tick {
      color: var(--secondary);
      font-weight: bold;
    }

    /* 6. 硬核运营数据指标条 */
    .metrics-section {
      background: linear-gradient(135deg, #182230 0%, #0F172A 100%);
      color: var(--white);
      padding: 60px 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }
    .metric-item {
      padding: 10px;
    }
    .metric-num {
      font-size: 2.75rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
      margin-bottom: 8px;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    }
    .metric-label {
      font-size: 1.05rem;
      font-weight: 600;
      color: #F1F5F9;
      margin-bottom: 4px;
    }
    .metric-sub {
      font-size: 0.8125rem;
      color: #94A3B8;
    }

    /* 7. 深色实景管控看板区 */
    .vision-section {
      background-color: var(--dark-slate);
      color: var(--white);
      padding: 90px 0;
    }
    .vision-section .section-title {
      color: var(--white);
    }
    .vision-section .section-desc {
      color: #94A3B8;
    }
    .dashboard-preview-card {
      background: var(--dark-card);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-dark);
      padding: 30px;
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    }
    .db-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
    }
    .db-panel {
      background: rgba(15, 23, 42, 0.6);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 20px;
    }
    .db-title {
      font-size: 0.95rem;
      font-weight: 600;
      color: #E2E8F0;
      margin-bottom: 16px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .chart-mock-lines {
      height: 180px;
      display: flex;
      align-items: flex-end;
      gap: 16px;
      padding-top: 20px;
      border-bottom: 1px solid var(--border-dark);
    }
    .chart-bar-group {
      flex: 1;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 8px;
      height: 100%;
      justify-content: flex-end;
    }
    .bar {
      width: 100%;
      border-radius: 4px 4px 0 0;
      transition: height 0.3s;
    }
    .bar-orange { background: var(--primary); }
    .bar-green { background: var(--secondary); }
    .chart-label { font-size: 0.75rem; color: #94A3B8; }
    .coach-kpi-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 10px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 0.85rem;
    }
    .coach-kpi-item:last-child { border-bottom: none; }

    /* 8. 细分赛道落地方案 */
    .stories-section {
      background-color: var(--bg-light);
    }
    .stories-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .story-card {
      background: var(--white);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .story-img {
      height: 160px;
      position: relative;
    }
    .story-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .story-tag {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(24, 34, 48, 0.85);
      color: var(--white);
      font-size: 0.75rem;
      padding: 3px 10px;
      border-radius: var(--radius-sm);
    }
    .story-body {
      padding: 20px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .story-body h4 {
      font-size: 1.1rem;
      color: var(--dark-slate);
      margin-bottom: 10px;
    }
    .story-diff {
      margin-top: 12px;
      padding: 10px;
      background: var(--bg-alt);
      border-radius: var(--radius-sm);
      font-size: 0.825rem;
      color: var(--text-muted);
    }
    .story-diff strong {
      color: var(--secondary);
    }

    /* 9. 客户评价与校长见证 */
    .reviews-section {
      background-color: var(--white);
    }
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .review-card {
      background: var(--bg-light);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-quote {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      position: relative;
    }
    .review-stars {
      color: #F59E0B;
      font-size: 0.9rem;
      margin-bottom: 12px;
    }
    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--border);
      padding-top: 16px;
    }
    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--dark-slate);
      color: var(--white);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 0.9rem;
    }
    .reviewer-info h5 {
      font-size: 0.95rem;
      color: var(--dark-slate);
    }
    .reviewer-info p {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* 10. 资讯干货摘要 */
    .news-section {
      background-color: var(--bg-alt);
    }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .news-card {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all 0.25s;
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .news-card img {
      height: 140px;
      width: 100%;
      object-fit: cover;
    }
    .news-content {
      padding: 18px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-tag {
      font-size: 0.75rem;
      color: var(--primary);
      font-weight: 600;
      margin-bottom: 6px;
    }
    .news-title {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--dark-slate);
      line-height: 1.45;
      margin-bottom: 8px;
    }
    .news-brief {
      font-size: 0.825rem;
      color: var(--text-muted);
      line-height: 1.5;
      margin-bottom: 12px;
      flex-grow: 1;
    }
    .news-link {
      font-size: 0.8rem;
      color: var(--primary);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 11. 标准化落地流程 */
    .process-section {
      background-color: var(--white);
    }
    .process-steps {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
    }
    .step-card {
      background: var(--bg-light);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 24px 18px;
      text-align: center;
      position: relative;
    }
    .step-num {
      width: 36px;
      height: 36px;
      background: var(--primary);
      color: var(--white);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 14px auto;
      font-weight: 700;
      font-size: 1rem;
    }
    .step-card h4 {
      font-size: 1rem;
      color: var(--dark-slate);
      margin-bottom: 8px;
    }
    .step-card p {
      font-size: 0.825rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 12. 常见问题解答手风琴 */
    .faq-section {
      background-color: var(--bg-alt);
    }
    .faq-wrapper {
      max-width: 840px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
    }
    .faq-trigger {
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--dark-slate);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-icon {
      font-size: 1.25rem;
      transition: transform 0.25s;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--primary);
    }
    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: var(--white);
    }
    .faq-content {
      padding: 0 24px 20px 24px;
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px solid #F1F5F9;
      padding-top: 14px;
    }

    /* 13. 试用预约表单 CTA 收口 */
    .contact-cta-section {
      background: linear-gradient(135deg, #182230 0%, #0F172A 100%);
      color: var(--white);
      padding: 80px 0;
    }
    .contact-box {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-lg);
      padding: 50px 40px;
      backdrop-filter: blur(10px);
    }
    .contact-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .contact-intro h3 {
      font-size: 2rem;
      line-height: 1.3;
      margin-bottom: 16px;
      color: var(--white);
    }
    .contact-intro p {
      font-size: 1rem;
      color: #CBD5E1;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .contact-safety {
      display: flex;
      gap: 20px;
      font-size: 0.85rem;
      color: #94A3B8;
    }
    .contact-safety span::before {
      content: '🔒 ';
    }
    .form-wrapper {
      background: var(--white);
      padding: 30px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-lg);
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-group label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--dark-slate);
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      outline: none;
      transition: border 0.2s;
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.15);
    }
    .btn-submit {
      width: 100%;
      background: var(--primary);
      color: var(--white);
      padding: 12px;
      font-size: 1rem;
      font-weight: 700;
      border-radius: var(--radius-sm);
      border: none;
      cursor: pointer;
      transition: background 0.2s;
    }
    .btn-submit:hover {
      background: var(--primary-hover);
    }

    /* 页脚设计 */
    .site-footer {
      background-color: #0B111B;
      color: #94A3B8;
      padding: 70px 0 24px 0;
      font-size: 0.9rem;
      border-top: 1px solid #1E293B;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-col h4 {
      color: var(--white);
      font-size: 1.05rem;
      margin-bottom: 20px;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .footer-desc {
      line-height: 1.7;
      margin-top: 14px;
      font-size: 0.85rem;
    }
    .footer-contact li {
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8rem;
    }

    /* 响应式断点处理 */
    @media (max-width: 1024px) {
      .hero-grid, .about-grid, .contact-grid {
        grid-template-columns: 1fr;
      }
      .features-grid, .solutions-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid, .stories-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-steps {
        grid-template-columns: repeat(3, 1fr);
      }
      .db-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .topbar { display: none; }
      .menu-toggle { display: block; }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 24px;
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
        border-bottom: 1px solid var(--border);
        gap: 16px;
      }
      .nav-links.show {
        display: flex;
      }
      .nav-cta {
        display: none;
      }
      .hero-h1 {
        font-size: 2.1rem;
      }
      .features-grid, .solutions-grid, .reviews-grid, .stories-grid, .news-grid, .process-steps {
        grid-template-columns: 1fr;
      }
      .metrics-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
      }
      section {
        padding: 55px 0;
      }
      .contact-box {
        padding: 30px 20px;
      }
    }