/* roulang page: index */
:root {
      --primary: #0F2438;
      --primary-light: #1A3854;
      --accent: #C59B27;
      --accent-hover: #AB841D;
      --accent-light: #FBF6E9;
      --dark: #0A1624;
      --text-main: #1A202C;
      --text-muted: #4A5568;
      --text-sub: #718096;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --border-color: #E2E8F0;
      --border-hover: #CBD5E1;
      --shadow-sm: 0 2px 8px rgba(15, 36, 56, 0.04);
      --shadow-md: 0 6px 24px -2px rgba(15, 36, 56, 0.08);
      --shadow-lg: 0 12px 36px -4px rgba(15, 36, 56, 0.12);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --transition: all 0.25s ease-in-out;
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      color: var(--text-main);
      background-color: var(--bg-white);
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

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

    button, input, select, textarea {
      font: inherit;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部信息条 */
    .top-bar {
      background-color: var(--dark);
      color: #94A3B8;
      font-size: 0.85rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 8px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .top-bar-left, .top-bar-right {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .top-bar a:hover {
      color: var(--accent);
    }

    /* 导航栏 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-logo .logo-badge {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary), var(--primary-light));
      color: var(--accent);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      font-weight: 800;
      box-shadow: 0 4px 10px rgba(15, 36, 56, 0.2);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 28px;
    }
    .nav-menu a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
      padding: 6px 0;
    }
    .nav-menu a:hover,
    .nav-menu a:focus {
      color: var(--primary);
    }
    .nav-menu a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent);
      transition: var(--transition);
    }
    .nav-menu a:hover::after {
      width: 100%;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      min-height: 44px;
      white-space: nowrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--accent), var(--accent-hover));
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(197, 155, 39, 0.3);
    }
    .btn-primary:hover {
      background: var(--accent-hover);
      box-shadow: 0 6px 20px rgba(197, 155, 39, 0.4);
      transform: translateY(-2px);
    }
    .btn-outline {
      border-color: var(--primary);
      color: var(--primary);
      background: transparent;
    }
    .btn-outline:hover {
      background: var(--primary);
      color: #FFFFFF;
      transform: translateY(-2px);
    }
    .btn-dark {
      background: var(--primary);
      color: #FFFFFF;
    }
    .btn-dark:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
    }
    .btn-light {
      background: #FFFFFF;
      color: var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .btn-light:hover {
      background: var(--bg-light);
      transform: translateY(-2px);
    }

    /* 汉堡按钮 */
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      width: 44px;
      height: 44px;
      padding: 8px;
      flex-direction: column;
      justify-content: center;
      gap: 5px;
    }
    .mobile-toggle span {
      display: block;
      width: 100%;
      height: 2px;
      background: var(--primary);
      transition: var(--transition);
    }

    /* 通用板块与排版 */
    section {
      padding: 90px 0;
      position: relative;
    }
    .section-header {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 56px;
    }
    .section-badge {
      display: inline-block;
      padding: 5px 14px;
      background: var(--accent-light);
      color: var(--accent);
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 700;
      letter-spacing: 0.5px;
      margin-bottom: 14px;
      border: 1px solid rgba(197, 155, 39, 0.2);
    }
    .section-title {
      font-size: 2.25rem;
      font-weight: 700;
      color: var(--primary);
      line-height: 1.35;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.8;
    }
    .bg-light {
      background-color: var(--bg-light);
    }
    .bg-white {
      background-color: var(--bg-white);
    }
    .bg-dark {
      background-color: var(--dark);
      color: #FFFFFF;
    }

    /* 1. 首屏 Banner (#hero) - 无大图图标矩阵 + 状态条 + 短标题 */
    .hero-section {
      background: linear-gradient(180deg, #F0F4F8 0%, #FFFFFF 100%);
      padding: 70px 0 85px;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-status-bar {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 8px 18px;
      border-radius: 30px;
      box-shadow: var(--shadow-sm);
      margin-bottom: 28px;
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .pulse-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #10B981;
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
    }
    .hero-title {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--primary);
      margin-bottom: 24px;
      letter-spacing: -1px;
    }
    .hero-title span {
      color: var(--accent);
      position: relative;
    }
    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.8;
      max-width: 860px;
      margin-bottom: 36px;
    }
    .hero-cta-group {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 50px;
      flex-wrap: wrap;
    }
    .hero-matrix-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .matrix-card {
      background: #FFFFFF;
      padding: 24px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .matrix-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--accent);
    }
    .matrix-icon {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: var(--accent-light);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      font-weight: 700;
    }
    .matrix-card h3 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--primary);
    }
    .matrix-card p {
      font-size: 0.88rem;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 2. 运营痛点对照区 (#pain-points) */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .pain-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .pain-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .pain-card-header {
      padding: 20px 24px;
      background: #FFF1F2;
      border-bottom: 1px solid #FFE4E6;
    }
    .pain-card-header h3 {
      font-size: 1.1rem;
      color: #BE123C;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .pain-card-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .pain-problem {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .pain-solution {
      background: var(--bg-light);
      padding: 16px;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--accent);
    }
    .pain-solution-title {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 6px;
    }
    .pain-solution-desc {
      font-size: 0.86rem;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 3. 解决方案与多端协同 (#solutions) */
    .solution-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .solution-media {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
    }
    .solution-media img {
      width: 100%;
      height: 420px;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .solution-media:hover img {
      transform: scale(1.03);
    }
    .solution-content h3 {
      font-size: 1.85rem;
      color: var(--primary);
      margin-bottom: 20px;
      line-height: 1.4;
    }
    .solution-content p {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .solution-metrics-badge {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      padding: 12px 18px;
      background: var(--accent-light);
      border: 1px solid rgba(197, 155, 39, 0.3);
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      font-weight: 600;
      color: #855C08;
      margin-bottom: 28px;
    }
    .check-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .check-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.95rem;
      color: var(--text-muted);
    }
    .check-list li::before {
      content: '✓';
      display: inline-flex;
      width: 20px;
      height: 20px;
      background: var(--accent);
      color: #fff;
      border-radius: 50%;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
      font-weight: bold;
    }

    /* 4. 核心功能矩阵区 (#features) */
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feature-card {
      background: #FFFFFF;
      padding: 32px 28px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--accent);
    }
    .feature-head {
      margin-bottom: 16px;
    }
    .feature-tag {
      font-size: 0.78rem;
      font-weight: 700;
      color: var(--accent);
      text-transform: uppercase;
      margin-bottom: 8px;
      display: block;
    }
    .feature-card h3 {
      font-size: 1.2rem;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .feature-card p {
      font-size: 0.92rem;
      color: var(--text-sub);
      line-height: 1.7;
    }

    /* 5. 热门版本矩阵与优惠阶梯 (#products) */
    .tier-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      align-items: stretch;
    }
    .tier-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      position: relative;
      display: flex;
      flex-direction: column;
transition: var(--transition);
    }
    .tier-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }
    .tier-card.featured {
      border: 2px solid var(--accent);
      box-shadow: 0 10px 30px rgba(197, 155, 39, 0.18);
    }
    .tier-badge {
      position: absolute;
      top: -14px;
      right: 28px;
      background: linear-gradient(135deg, var(--accent), var(--accent-hover));
      color: #FFFFFF;
      font-size: 0.8rem;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: 20px;
    }
    .tier-name {
      font-size: 1.4rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .tier-target {
      font-size: 0.9rem;
      color: var(--text-sub);
      margin-bottom: 20px;
    }
    .tier-price {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 24px;
      padding-bottom: 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .tier-price small {
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-sub);
    }
    .tier-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-bottom: 32px;
      flex-grow: 1;
    }
    .tier-list li {
      font-size: 0.92rem;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .tier-list li::before {
      content: '•';
      color: var(--accent);
      font-size: 1.2rem;
      line-height: 1;
    }

    /* 6. 实施部署步骤区 (#steps) */
    .steps-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .step-item {
      background: #FFFFFF;
      padding: 30px 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      position: relative;
      transition: var(--transition);
    }
    .step-item:hover {
      border-color: var(--accent);
      transform: translateY(-4px);
    }
    .step-number {
      font-size: 2rem;
      font-weight: 800;
      color: rgba(197, 155, 39, 0.3);
      margin-bottom: 14px;
      line-height: 1;
    }
    .step-item h3 {
      font-size: 1.12rem;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .step-item p {
      font-size: 0.88rem;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 7. 深色理念区 (#technology) */
    .tech-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .tech-box {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 32px 26px;
      border-radius: var(--radius-md);
      transition: var(--transition);
    }
    .tech-box:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: var(--accent);
      transform: translateY(-4px);
    }
    .tech-box h3 {
      font-size: 1.2rem;
      color: #FFFFFF;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .tech-box h3 span {
      color: var(--accent);
    }
    .tech-box p {
      font-size: 0.92rem;
      color: #94A3B8;
      line-height: 1.7;
    }

    /* 8. 标杆客户案例 (#stories) */
    .story-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .story-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .story-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .story-media {
      height: 240px;
      overflow: hidden;
    }
    .story-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .story-card:hover .story-media img {
      transform: scale(1.05);
    }
    .story-body {
      padding: 28px;
    }
    .story-tag {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--accent);
      margin-bottom: 8px;
    }
    .story-body h3 {
      font-size: 1.3rem;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .story-quote {
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 18px;
      font-style: italic;
    }
    .story-meta {
      font-size: 0.85rem;
      color: var(--text-sub);
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }

    /* 9. 数据指标条 (#metrics) */
    .metrics-bar-section {
      background: var(--primary);
      padding: 60px 0;
      color: #FFFFFF;
      border-top: 3px solid var(--accent);
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-value {
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--accent);
      margin-bottom: 8px;
      font-family: inherit;
      line-height: 1.2;
    }
    .metric-label {
      font-size: 0.96rem;
      color: #E2E8F0;
      font-weight: 500;
    }

    /* 10. 适用场景矩阵 (#scenarios) */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .scenario-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .scenario-card:hover {
      border-color: var(--accent);
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .scenario-img {
      height: 170px;
      overflow: hidden;
    }
    .scenario-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s;
    }
    .scenario-card:hover .scenario-img img {
      transform: scale(1.06);
    }
    .scenario-info {
      padding: 20px;
    }
    .scenario-info h3 {
      font-size: 1.15rem;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .scenario-info p {
      font-size: 0.88rem;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 11. 评价墙口碑区 (#reviews) */
    .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: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .review-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .stars {
      color: var(--accent);
      margin-bottom: 12px;
      font-size: 1rem;
      letter-spacing: 2px;
    }
    .review-text {
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .reviewer {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid #F1F5F9;
      padding-top: 16px;
    }
    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--accent-light);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 1rem;
    }
    .reviewer-info h4 {
      font-size: 0.95rem;
      color: var(--primary);
    }
    .reviewer-info p {
      font-size: 0.82rem;
      color: var(--text-sub);
    }

    /* 12. 经营资讯与指南区 (#insights) */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .insight-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .insight-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .insight-thumb {
      height: 190px;
      overflow: hidden;
    }
    .insight-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s;
    }
    .insight-card:hover .insight-thumb img {
      transform: scale(1.05);
    }
    .insight-content {
      padding: 24px;
    }
    .insight-date {
      font-size: 0.82rem;
      color: var(--text-sub);
      margin-bottom: 8px;
      display: flex;
      justify-content: space-between;
    }
    .insight-content h3 {
      font-size: 1.15rem;
      color: var(--primary);
      margin-bottom: 12px;
      line-height: 1.45;
    }
    .insight-content p {
      font-size: 0.9rem;
      color: var(--text-sub);
      line-height: 1.65;
    }

    /* 13. 常见问题解答 FAQ (#faq) */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item.active {
      border-color: var(--accent);
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--primary);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-toggle {
      font-size: 1.3rem;
      color: var(--accent);
      transition: transform 0.25s;
    }
    .faq-item.active .faq-toggle {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: var(--bg-light);
    }
    .faq-answer-inner {
      padding: 20px 24px;
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.75;
      border-top: 1px solid var(--border-color);
    }

    /* 14. 转化表单 CTA (#contact-cta) */
    .cta-panel {
      background: linear-gradient(135deg, var(--primary) 0%, var(--dark) 100%);
      border-radius: var(--radius-lg);
      padding: 60px 48px;
      color: #FFFFFF;
      box-shadow: var(--shadow-lg);
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .cta-info h2 {
      font-size: 2.2rem;
      line-height: 1.3;
      margin-bottom: 16px;
      color: #FFFFFF;
    }
    .cta-info p {
      font-size: 1.05rem;
      color: #CBD5E1;
      margin-bottom: 28px;
      line-height: 1.75;
    }
    .cta-contact-box {
      background: rgba(255, 255, 255, 0.05);
      border-left: 3px solid var(--accent);
      padding: 16px 20px;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    }
    .cta-contact-box div {
      font-size: 0.9rem;
      color: #94A3B8;
      margin-bottom: 4px;
    }
    .cta-contact-box strong {
      font-size: 1.4rem;
      color: var(--accent);
    }
    .cta-form {
      background: #FFFFFF;
      padding: 32px;
      border-radius: var(--radius-md);
      color: var(--text-main);
      box-shadow: var(--shadow-md);
    }
    .cta-form h3 {
      font-size: 1.3rem;
      color: var(--primary);
      margin-bottom: 18px;
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-group label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-muted);
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 11px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      transition: var(--transition);
    }
    .form-control:focus {
      outline: none;
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(197, 155, 39, 0.15);
    }
    .form-submit {
      width: 100%;
      margin-top: 10px;
    }

    /* 保障图标条 */
    .trust-strip {
      background: var(--bg-light);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 32px 0;
    }
    .trust-strip-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .trust-item {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .trust-icon {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      font-weight: bold;
      flex-shrink: 0;
    }
    .trust-item h4 {
      font-size: 0.95rem;
      color: var(--primary);
    }
    .trust-item p {
      font-size: 0.82rem;
      color: var(--text-sub);
    }

    /* 页脚 */
    .site-footer {
      background-color: var(--dark);
      color: #94A3B8;
      padding: 70px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.9rem;
    }
    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand h3 {
      font-size: 1.35rem;
      color: #FFFFFF;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 20px;
      max-width: 360px;
    }
    .footer-links h4 {
      font-size: 1.05rem;
      color: #FFFFFF;
      margin-bottom: 18px;
    }
    .footer-links ul {
      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: 26px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 14px;
      font-size: 0.85rem;
    }

    /* 移动端抽屉菜单 */
    .mobile-drawer {
      position: fixed;
      top: 0;
      right: -100%;
      width: 280px;
      height: 100vh;
      background: #FFFFFF;
      z-index: 2000;
      box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
      padding: 30px 24px;
      display: flex;
      flex-direction: column;
      gap: 24px;
      transition: right 0.3s ease;
    }
    .mobile-drawer.open {
      right: 0;
    }
    .mobile-drawer-close {
      align-self: flex-end;
      background: none;
      border: none;
      font-size: 1.6rem;
      color: var(--primary);
      cursor: pointer;
      line-height: 1;
    }
    .mobile-nav-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .mobile-nav-list a {
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--primary);
    }
    .mobile-overlay {
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.4);
      z-index: 1999;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.3s ease;
    }
    .mobile-overlay.open {
      opacity: 1;
      pointer-events: auto;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-matrix-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .feature-grid,
      .steps-timeline,
      .scenario-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .solution-split {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-menu, .nav-actions .btn-outline {
        display: none;
      }
      .mobile-toggle {
        display: flex;
      }
      .hero-title {
        font-size: 2.2rem;
      }
      .pain-grid,
      .tier-grid,
      .tech-grid,
      .story-grid,
      .metrics-grid,
      .reviews-grid,
      .insights-grid,
      .trust-strip-grid {
        grid-template-columns: 1fr;
      }
      .cta-panel {
        grid-template-columns: 1fr;
        padding: 36px 20px;
      }
      .section-title {
        font-size: 1.8rem;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 520px) {
      .hero-matrix-grid,
      .feature-grid,
      .steps-timeline,
      .scenario-grid {
        grid-template-columns: 1fr;
      }
      .hero-cta-group {
        flex-direction: column;
        width: 100%;
      }
      .hero-cta-group .btn {
        width: 100%;
      }
    }