/* roulang page: index */
:root {
      --primary: #0F5B78;
      --primary-dark: #0A4D68;
      --primary-deep: #07202B;
      --accent: #14B8A6;
      --accent-hover: #0d9488;
      --accent-green: #10B981;
      --text-main: #0F172A;
      --text-muted: #334155;
      --text-light: #64748B;
      --bg-main: #FFFFFF;
      --bg-alt: #F8FAFC;
      --border-color: #E2E8F0;
      --card-shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
      --card-shadow-hover: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
      --radius-sm: 6px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --font-stack: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: var(--font-stack);
      color: var(--text-main);
      background-color: var(--bg-main);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.2s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button, input, select, textarea {
      font-family: inherit;
      font-size: 1rem;
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    .badge {
      display: inline-flex;
      align-items: center;
      padding: 4px 12px;
      font-size: 0.8125rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      background-color: #E6F4F8;
      color: var(--primary);
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .badge-accent {
      background-color: #E6FFFA;
      color: #0d9488;
    }
    .section-title-wrap {
      margin-bottom: 48px;
    }
    .section-title-wrap.text-center {
      text-align: center;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .section-subtitle {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.75;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      font-size: 0.9375rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.25s ease;
      border: 1px solid transparent;
      text-align: center;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #FFFFFF;
    }
    .btn-primary:hover {
      background-color: var(--primary-dark);
      box-shadow: 0 4px 12px rgba(15, 91, 120, 0.25);
    }
    .btn-accent {
      background-color: var(--accent);
      color: #FFFFFF;
    }
    .btn-accent:hover {
      background-color: var(--accent-hover);
      box-shadow: 0 4px 12px rgba(20, 184, 166, 0.25);
    }
    .btn-outline {
      background-color: transparent;
      color: var(--primary);
      border-color: var(--primary);
    }
    .btn-outline:hover {
      background-color: var(--primary);
      color: #FFFFFF;
    }
    .btn-white {
      background-color: #FFFFFF;
      color: var(--primary);
    }
    .btn-white:hover {
      background-color: #F8FAFC;
      box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    }

    /* 顶栏 */
    .top-bar {
      background-color: #07202B;
      color: #94A3B8;
      font-size: 0.8125rem;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-info {
      display: flex;
      gap: 20px;
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 1px 3px rgba(0,0,0,0.02);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .site-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .logo-mark {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-weight: 800;
      font-size: 1.1rem;
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-link {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 6px 0;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      right: 0;
      height: 2px;
      background-color: var(--primary);
      border-radius: 2px;
    }
    .nav-cta {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 8px;
    }

    /* 板块通用内边距 */
    .section-padding {
      padding-top: 84px;
      padding-bottom: 84px;
    }
    .section-bg-alt {
      background-color: var(--bg-alt);
    }
    .section-bg-dark {
      background-color: var(--primary-deep);
      color: #FFFFFF;
    }

    /* 板块 1: 首屏 Hero 白皮书获客 */
    .hero-section {
      background-color: #F1F6F9;
      background-image: linear-gradient(180deg, rgba(241,246,249,0.92) 0%, rgba(255,255,255,0.98) 100%), url('/assets/images/1831d6797a7f1bb9.webp');
      background-size: cover;
      background-position: center;
      padding: 64px 0 80px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-title {
      font-size: 2.65rem;
      font-weight: 800;
      color: var(--primary-deep);
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 32px;
    }
    .hero-stats-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 36px;
      padding-top: 28px;
      border-top: 1px solid rgba(15, 91, 120, 0.15);
    }
    .hero-stat-item .num {
      font-size: 1.6rem;
      font-weight: 700;
      color: var(--primary);
    }
    .hero-stat-item .label {
      font-size: 0.875rem;
      color: var(--text-light);
    }
    .whitepaper-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: 0 12px 30px rgba(15, 91, 120, 0.08);
    }
    .whitepaper-cover-box {
      display: flex;
      gap: 18px;
      margin-bottom: 24px;
      padding-bottom: 20px;
      border-bottom: 1px dashed var(--border-color);
    }
    .whitepaper-thumb {
      width: 100px;
      height: 130px;
      object-fit: cover;
      border-radius: var(--radius-sm);
      box-shadow: 0 4px 10px rgba(0,0,0,0.12);
      flex-shrink: 0;
    }
    .whitepaper-info h3 {
      font-size: 1.15rem;
      color: var(--primary-deep);
      margin-bottom: 8px;
      font-weight: 700;
    }
    .whitepaper-info p {
      font-size: 0.85rem;
      color: var(--text-light);
      line-height: 1.6;
    }
    .whitepaper-form .form-group {
      margin-bottom: 14px;
    }
    .whitepaper-form label {
      display: block;
      font-size: 0.8125rem;
      font-weight: 600;
      color: var(--text-muted);
      margin-bottom: 6px;
    }
    .whitepaper-form input, .whitepaper-form select {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.875rem;
      background-color: #FAFAFA;
      transition: all 0.2s;
    }
    .whitepaper-form input:focus, .whitepaper-form select:focus {
      outline: none;
      border-color: var(--primary);
      background-color: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(15, 91, 120, 0.1);
    }
    .form-agree {
      font-size: 0.775rem;
      color: var(--text-light);
      margin-top: 10px;
      display: flex;
      align-items: flex-start;
      gap: 6px;
    }

    /* 板块 2: 常见痛点 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .pain-card {
      background: #FFFFFF;
      border: 1px solid #FEE2E2;
      border-left: 4px solid #EF4444;
      border-radius: var(--radius-md);
      padding: 28px 24px;
      box-shadow: var(--card-shadow);
    }
    .pain-card h3 {
      font-size: 1.15rem;
      color: #991B1B;
      margin-bottom: 12px;
      font-weight: 700;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .pain-card p {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 3: 资质与体系概览 */
    .overview-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .overview-img-wrap {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      border: 1px solid var(--border-color);
    }
    .overview-content p {
      color: var(--text-muted);
      margin-bottom: 20px;
    }
    .qual-badges {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 24px;
    }
    .qual-item {
      background: var(--bg-alt);
      padding: 14px 16px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }
    .qual-item strong {
      display: block;
      color: var(--primary);
      font-size: 0.9375rem;
      margin-bottom: 4px;
    }
    .qual-item span {
      font-size: 0.8125rem;
      color: var(--text-light);
    }

    /* 板块 4: 核心优势六卡片 */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .advantage-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      box-shadow: var(--card-shadow);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
    }
    .advantage-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--card-shadow-hover);
      border-color: #CBD5E1;
    }
    .advantage-icon-box {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background-color: #E6F4F8;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.25rem;
      margin-bottom: 20px;
    }
    .advantage-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .advantage-card p {
      font-size: 0.9125rem;
      color: var(--text-muted);
      line-height: 1.7;
      flex-grow: 1;
    }

    /* 板块 5: 场景演示与解决方案 */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .scenario-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      transition: all 0.2s ease;
    }
    .scenario-card:hover {
      box-shadow: var(--card-shadow-hover);
    }
    .scenario-img {
      width: 100%;
      height: 200px;
      object-fit: cover;
    }
    .scenario-body {
      padding: 24px;
    }
    .scenario-body h3 {
      font-size: 1.15rem;
      color: var(--text-main);
      margin-bottom: 10px;
      font-weight: 700;
    }
    .scenario-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }
    .tag-item {
      font-size: 0.75rem;
      padding: 3px 8px;
      border-radius: 4px;
      background: #F1F5F9;
      color: var(--text-light);
    }

    /* 板块 6: 数字化服务交互示意 */
    .demo-block {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--card-shadow);
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .demo-preview-box img {
      border-radius: var(--radius-md);
      box-shadow: 0 8px 24px rgba(15, 91, 120, 0.12);
      border: 1px solid var(--border-color);
    }
    .demo-points h3 {
      font-size: 1.5rem;
      color: var(--primary);
      margin-bottom: 16px;
    }
    .demo-points p {
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    .demo-step-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .demo-step-item {
      display: flex;
      gap: 14px;
    }
    .step-index {
      width: 28px;
      height: 28px;
      background: #E6F4F8;
      color: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.875rem;
      font-weight: 700;
      flex-shrink: 0;
      margin-top: 2px;
    }
    .step-text strong {
      display: block;
      color: var(--text-main);
      font-size: 0.95rem;
      margin-bottom: 4px;
    }
    .step-text span {
      font-size: 0.85rem;
      color: var(--text-light);
      line-height: 1.6;
    }

    /* 板块 7: 深色底座与技术理念 */
    .tech-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .tech-card {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      padding: 32px 24px;
    }
    .tech-card h3 {
      font-size: 1.2rem;
      color: #38BDF8;
      margin-bottom: 14px;
      font-weight: 700;
    }
    .tech-card p {
      font-size: 0.9125rem;
      color: #CBD5E1;
      line-height: 1.75;
    }

    /* 板块 8: 客户健康改善真实案例 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }
    .case-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--card-shadow);
      display: flex;
      gap: 24px;
    }
    .case-avatar {
      width: 110px;
      height: 110px;
      object-fit: cover;
      border-radius: var(--radius-md);
      flex-shrink: 0;
    }
    .case-content h3 {
      font-size: 1.15rem;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .case-meta {
      font-size: 0.8125rem;
      color: var(--text-light);
      margin-bottom: 12px;
      display: flex;
      gap: 12px;
    }
    .case-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 14px;
    }
    .case-result-badge {
      display: inline-block;
      padding: 4px 10px;
      font-size: 0.8125rem;
      background: #ECFDF5;
      color: #059669;
      font-weight: 600;
      border-radius: 4px;
    }

    /* 板块 9: 核心数据统计条 */
    .stats-bar-section {
      background-color: var(--primary);
      color: #FFFFFF;
      padding: 56px 0;
    }
    .stats-bar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .stats-bar-item .val {
      font-size: 2.5rem;
      font-weight: 800;
      line-height: 1.1;
      margin-bottom: 8px;
      color: #A7F3D0;
    }
    .stats-bar-item .name {
      font-size: 0.9375rem;
      color: #E2E8F0;
    }

    /* 板块 10: 方案套餐对比 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .pricing-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 28px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .pricing-card.highlight {
      border: 2px solid var(--primary);
      box-shadow: 0 10px 25px rgba(15, 91, 120, 0.12);
    }
    .card-ribbon {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--accent);
      color: #FFF;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 20px;
    }
    .pricing-card h3 {
      font-size: 1.35rem;
      color: var(--text-main);
      margin-bottom: 8px;
      font-weight: 700;
    }
    .pricing-target {
      font-size: 0.85rem;
      color: var(--text-light);
      margin-bottom: 20px;
      min-height: 40px;
    }
    .pricing-features {
      list-style: none;
      margin: 24px 0 32px 0;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .pricing-features li {
      font-size: 0.9rem;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .pricing-features li::before {
content: '✓';
      color: var(--accent);
      font-weight: 800;
    }

    /* 板块 11: 口碑与评价墙 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 22px;
      box-shadow: var(--card-shadow);
    }
    .review-header {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 16px;
    }
    .review-avatar-stub {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E6F4F8;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.95rem;
    }
    .review-user-info strong {
      display: block;
      font-size: 0.95rem;
      color: var(--text-main);
    }
    .review-user-info span {
      font-size: 0.8rem;
      color: var(--text-light);
    }
    .review-text {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 12: 行业资讯与慢病科普 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
    }
    .news-cover {
      width: 100%;
      height: 190px;
      object-fit: cover;
    }
    .news-content {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 0.8rem;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .news-content h3 {
      font-size: 1.1rem;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.45;
    }
    .news-content p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .news-link {
      font-size: 0.875rem;
      color: var(--primary);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 板块 13: 保障承诺条 */
    .trust-strip {
      background: #F1F6F9;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 36px 0;
    }
    .trust-strip-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .trust-strip-item {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .trust-strip-icon {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #FFFFFF;
      color: var(--primary);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      flex-shrink: 0;
    }
    .trust-strip-text strong {
      display: block;
      font-size: 0.95rem;
      color: var(--text-main);
    }
    .trust-strip-text span {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* 板块 14: 常见疑问 FAQ */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--card-shadow);
    }
    .faq-item summary {
      padding: 18px 24px;
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-item summary::-webkit-details-marker {
      display: none;
    }
    .faq-item summary::after {
      content: '+';
      font-size: 1.25rem;
      color: var(--primary);
      font-weight: 700;
      transition: transform 0.2s ease;
    }
    .faq-item[open] summary::after {
      content: '−';
    }
    .faq-answer {
      padding: 0 24px 20px 24px;
      font-size: 0.9125rem;
      color: var(--text-muted);
      line-height: 1.75;
      border-top: 1px solid #F1F5F9;
      margin-top: 8px;
    }

    /* 板块 15: 方案预约挂号与方案定制表单 CTA */
    .cta-card {
      background: linear-gradient(135deg, var(--primary) 0%, #0A4D68 100%);
      border-radius: var(--radius-lg);
      padding: 56px 48px;
      color: #FFFFFF;
      box-shadow: 0 16px 36px rgba(15, 91, 120, 0.2);
    }
    .cta-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }
    .cta-content h2 {
      font-size: 2rem;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.3;
      color: #FFFFFF;
    }
    .cta-content p {
      font-size: 0.95rem;
      color: #E2E8F0;
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .cta-form-box {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 32px;
      color: var(--text-main);
    }
    .cta-form-box h3 {
      font-size: 1.2rem;
      color: var(--primary);
      margin-bottom: 18px;
      font-weight: 700;
    }
    .cta-form .form-group {
      margin-bottom: 16px;
    }
    .cta-form label {
      display: block;
      font-size: 0.8125rem;
      font-weight: 600;
      color: var(--text-muted);
      margin-bottom: 6px;
    }
    .cta-form input, .cta-form select, .cta-form textarea {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.875rem;
      background: #F8FAFC;
    }
    .cta-form input:focus, .cta-form select:focus, .cta-form textarea:focus {
      outline: none;
      border-color: var(--primary);
      background: #FFFFFF;
    }

    /* 页脚 */
    .site-footer {
      background-color: #07202B;
      color: #94A3B8;
      padding: 64px 0 32px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.875rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand h4 {
      font-size: 1.3rem;
      color: #FFFFFF;
      margin-bottom: 16px;
      font-weight: 700;
    }
    .footer-brand p {
      line-height: 1.75;
      margin-bottom: 20px;
      color: #94A3B8;
    }
    .footer-col h5 {
      font-size: 1rem;
      color: #FFFFFF;
      margin-bottom: 18px;
      font-weight: 600;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: var(--accent);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 28px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 16px;
      font-size: 0.8125rem;
      color: #64748B;
    }
    .footer-disclaimer {
      font-size: 0.775rem;
      color: #64748B;
      line-height: 1.6;
      margin-top: 12px;
      width: 100%;
    }

    /* 悬浮工具条 */
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 990;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary);
      color: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 12px rgba(0,0,0,0.18);
      cursor: pointer;
      font-size: 0.875rem;
      font-weight: 700;
      border: none;
      transition: all 0.2s;
    }
    .float-btn:hover {
      background: var(--accent);
      transform: translateY(-2px);
    }

    /* 响应式样式 */
    @media (max-width: 1024px) {
      .hero-grid, .overview-grid, .demo-block, .cta-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .advantages-grid, .pain-grid, .scenarios-grid, .tech-grid, .pricing-grid, .reviews-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-bar-grid, .trust-strip-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 28px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .main-nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        align-items: flex-start;
        padding: 24px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        display: none;
        gap: 16px;
        border-bottom: 1px solid var(--border-color);
      }
      .main-nav.show {
        display: flex;
      }
      .nav-cta {
        display: none;
      }
      .hero-title {
        font-size: 2rem;
      }
      .advantages-grid, .pain-grid, .scenarios-grid, .tech-grid, .case-grid, .pricing-grid, .reviews-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .stats-bar-grid, .trust-strip-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .cta-card {
        padding: 32px 20px;
      }
      .whitepaper-cover-box {
        flex-direction: column;
        align-items: center;
        text-align: center;
      }
      .case-card {
        flex-direction: column;
      }
      .case-avatar {
        width: 100%;
        height: 180px;
      }
    }