/* roulang page: index */
:root {
      --primary: #1e1b4b;
      --primary-light: #2563eb;
      --secondary: #7c3aed;
      --accent: #06b6d4;
      --bg-light: #f8fafc;
      --bg-white: #ffffff;
      --bg-dark: #0f172a;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --text-light: #f8fafc;
      --border-color: #e2e8f0;
      --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.01);
      --card-shadow-hover: 0 20px 30px -10px rgba(37, 99, 235, 0.15);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.6;
    }

    body {
      overflow-x: hidden;
    }

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

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部复合导航 */
    .top-bar {
      background: #0b0f19;
      color: #94a3b8;
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-left, .top-bar-right {
      display: flex;
      gap: 20px;
      align-items: center;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    }
    .main-nav {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 76px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-logo-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary-light), var(--secondary));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 900;
    }
    .nav-links {
      display: flex;
      gap: 28px;
      list-style: none;
      align-items: center;
    }
    .nav-links a {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      padding: 6px 0;
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--primary-light);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary-light);
      transition: var(--transition);
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .nav-cta-btn {
      background: linear-gradient(135deg, var(--primary-light), var(--secondary));
      color: #fff !important;
      padding: 10px 22px !important;
      border-radius: var(--radius-full);
      font-weight: 600;
      box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
    }
    .nav-cta-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
    }

    /* 移动端汉堡菜单 */
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .mobile-menu-btn span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--primary);
      margin: 5px 0;
      transition: var(--transition);
    }

    /* 通用板块样式 */
    section {
      padding: 90px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-white);
    }
    .section-dark {
      background-color: var(--bg-dark);
      color: var(--text-light);
    }
    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 60px auto;
    }
    .section-badge {
      display: inline-block;
      padding: 6px 14px;
      background: rgba(37, 99, 235, 0.08);
      color: var(--primary-light);
      font-size: 13px;
      font-weight: 700;
      border-radius: var(--radius-full);
      margin-bottom: 14px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .section-dark .section-badge {
      background: rgba(6, 182, 212, 0.15);
      color: var(--accent);
    }
    .section-title {
      font-size: 34px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
      color: var(--primary);
    }
    .section-dark .section-title {
      color: #ffffff;
    }
    .section-desc {
      font-size: 16px;
      line-height: 1.8;
      color: var(--text-muted);
    }
    .section-dark .section-desc {
      color: #94a3b8;
    }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 13px 28px;
      border-radius: var(--radius-md);
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary-light), var(--secondary));
      color: #fff;
      box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
    }
    .btn-outline {
      background: #fff;
      color: var(--primary);
      border-color: var(--border-color);
    }
    .btn-outline:hover {
      border-color: var(--primary-light);
      color: var(--primary-light);
      background: #f1f5f9;
    }
    .btn-outline-dark {
      background: rgba(255, 255, 255, 0.05);
      color: #fff;
      border-color: rgba(255, 255, 255, 0.2);
    }
    .btn-outline-dark:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: var(--accent);
      color: var(--accent);
    }

    /* 1. Hero 视听交互区 (双栏门户：左主张右快捷入口网格) */
    .hero-section {
      padding: 90px 0 100px;
      background: radial-gradient(circle at 80% 20%, rgba(124, 58, 237, 0.08) 0%, rgba(255, 255, 255, 0) 70%), var(--bg-light);
      border-bottom: 1px solid var(--border-color);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 50px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 44px;
      font-weight: 900;
      line-height: 1.25;
      color: var(--primary);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-content h1 span {
      background: linear-gradient(135deg, var(--primary-light), var(--secondary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-intro {
      font-size: 16px;
      line-height: 1.85;
      color: var(--text-muted);
      margin-bottom: 30px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      margin-bottom: 36px;
    }
    .hero-metrics {
      display: flex;
      gap: 30px;
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
    }
    .metric-item h4 {
      font-size: 24px;
      font-weight: 800;
      color: var(--primary);
    }
    .metric-item p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* Hero 右侧快捷入口网格 */
    .hero-quick-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }
    .quick-card {
      background: var(--bg-white);
      padding: 24px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .quick-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-shadow-hover);
      border-color: rgba(37, 99, 235, 0.4);
    }
    .quick-icon {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: #eff6ff;
      color: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 18px;
      margin-bottom: 14px;
    }
    .quick-card h3 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--primary);
    }
    .quick-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .quick-card .arrow-link {
      margin-top: 14px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary-light);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 2. 行业痛点对比区 */
    .pain-points-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }
    .pain-card {
      background: #fff;
      padding: 28px 24px;
      border-radius: var(--radius-md);
      border: 1px solid #fee2e2;
      box-shadow: var(--card-shadow);
      position: relative;
      overflow: hidden;
    }
    .pain-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: #ef4444;
    }
    .pain-tag {
      font-size: 12px;
      font-weight: 700;
      color: #ef4444;
      background: #fef2f2;
      padding: 3px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 12px;
    }
    .pain-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .pain-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 3. 全场景 AI 语音生成解决方案区 */
    .solution-item {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
      margin-bottom: 70px;
    }
    .solution-item:last-child {
      margin-bottom: 0;
    }
    .solution-item.reverse {
      direction: rtl;
    }
    .solution-item.reverse .solution-text {
      direction: ltr;
    }
    .solution-img-box {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      border: 1px solid var(--border-color);
    }
    .solution-img-box img {
      width: 100%;
      height: 320px;
      object-fit: cover;
      transition: var(--transition);
    }
    .solution-img-box:hover img {
      transform: scale(1.03);
    }
    .solution-text h3 {
      font-size: 26px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 16px;
    }
    .solution-text p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 20px;
    }
    .solution-spec-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .spec-tag {
      font-size: 13px;
      background: #eff6ff;
      color: var(--primary-light);
      padding: 6px 14px;
      border-radius: var(--radius-full);
      font-weight: 600;
      border: 1px solid #dbeafe;
    }

    /* 4. 技术流程与方法步骤区 */
    .workflow-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .flow-step {
      background: #fff;
      padding: 30px 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      position: relative;
    }
    .step-number {
      font-size: 32px;
      font-weight: 900;
      color: #cbd5e1;
      margin-bottom: 12px;
      line-height: 1;
    }
    .flow-step h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .flow-step p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 5. 核心产品与服务矩阵 */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .product-card {
      background: #fff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      padding: 36px 30px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
      position: relative;
    }
    .product-card.featured {
      border-color: var(--primary-light);
      box-shadow: 0 15px 35px -5px rgba(37, 99, 235, 0.15);
    }
    .product-card.featured::after {
      content: '热门主力';
      position: absolute;
      top: -12px;
      right: 24px;
      background: linear-gradient(135deg, var(--primary-light), var(--secondary));
      color: #fff;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: var(--radius-full);
    }
    .product-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--card-shadow-hover);
    }
    .product-head {
      margin-bottom: 24px;
    }
    .product-head h3 {
      font-size: 22px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .product-head p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .product-features {
      list-style: none;
      margin-bottom: 30px;
      border-top: 1px solid #f1f5f9;
      padding-top: 20px;
    }
    .product-features li {
      font-size: 14px;
      color: var(--text-main);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .product-features li::before {
      content: '✓';
      color: #10b981;
      font-weight: 900;
    }

    /* 6. 技术优势与核心壁垒区 (6卡片网格) */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .adv-card {
      background: #fff;
      padding: 30px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      transition: var(--transition);
    }
    .adv-card:hover {
      border-color: var(--primary-light);
      box-shadow: var(--card-shadow-hover);
    }
    .adv-icon {
      font-size: 24px;
      font-weight: 900;
      color: var(--primary-light);
      margin-bottom: 16px;
      display: inline-block;
    }
    .adv-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .adv-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 7. 深色多模态沉浸案例区 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .case-card {
      background: #1e293b;
      border-radius: var(--radius-lg);
      border: 1px solid rgba(255, 255, 255, 0.1);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .case-card:hover {
      transform: translateY(-5px);
      border-color: var(--accent);
    }
    .case-cover {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .case-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .case-body h3 {
      font-size: 19px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 10px;
    }
    .case-body p {
      font-size: 14px;
      color: #94a3b8;
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .case-stats-badge {
      font-size: 13px;
      font-weight: 700;
      color: var(--accent);
      background: rgba(6, 182, 212, 0.1);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      display: inline-block;
    }

    /* 8. 客户成功故事区 */
    .story-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }
    .story-card {
      background: #fff;
      padding: 36px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .story-quote {
      font-size: 15px;
      line-height: 1.85;
      color: var(--text-main);
      margin-bottom: 24px;
      position: relative;
    }
    .story-author {
      display: flex;
      align-items: center;
      gap: 16px;
      border-top: 1px solid #f1f5f9;
      padding-top: 18px;
    }
    .author-avatar {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-full);
      background: #e2e8f0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }
    .author-meta h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--primary);
    }
    .author-meta p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 9. 关键性能与业务数据指标条 */
    .stats-bar-section {
      background: linear-gradient(135deg, var(--primary), #0f172a);
      color: #fff;
      padding: 70px 0;
    }
    .stats-bar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }
    .stat-box h3 {
      font-size: 44px;
      font-weight: 900;
      color: var(--accent);
      margin-bottom: 8px;
      font-variant-numeric: tabular-nums;
    }
    .stat-box p {
      font-size: 15px;
      color: #cbd5e1;
    }

    /* 10. 用户真实口碑与证言区 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .testi-card {
      background: #fff;
      padding: 30px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-stars {
      color: #f59e0b;
      margin-bottom: 14px;
      font-size: 14px;
    }
    .testi-card p {
      font-size: 14px;
      color: var(--text-main);
      line-height: 1.75;
      margin-bottom: 20px;
    }
    .testi-user {
      font-size: 13px;
      color: var(--text-muted);
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
      display: flex;
      justify-content: space-between;
    }
    .testi-user strong {
      color: var(--primary);
    }

    /* 11. 前沿资讯与行业动态区 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: #fff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .news-card:hover {
      border-color: var(--primary-light);
      transform: translateY(-3px);
    }
    .news-tag {
      font-size: 12px;
      font-weight: 700;
      color: var(--secondary);
      background: #f5f3ff;
      padding: 4px 10px;
      border-radius: var(--radius-full);
      display: inline-block;
      margin-bottom: 12px;
    }
    .news-card h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .news-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .news-date {
      font-size: 12px;
      color: #94a3b8;
    }

    /* 12. 常见问题解答与保障区 (手风琴) */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-header {
      padding: 20px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 700;
      font-size: 16px;
      color: var(--primary);
      user-select: none;
    }
    .faq-header:hover {
      color: var(--primary-light);
    }
    .faq-icon {
      font-size: 18px;
      transition: var(--transition);
    }
    .faq-body {
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.8;
    }
    .faq-item.active .faq-body {
      padding: 0 24px 20px 24px;
      max-height: 400px;
      transition: max-height 0.3s ease-in-out;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* 底部收口行动区 (Banner) */
    .cta-banner-section {
      background: linear-gradient(135deg, var(--primary-light), var(--secondary));
      color: #fff;
      padding: 80px 0;
      text-align: center;
    }
    .cta-banner-content {
      max-width: 760px;
      margin: 0 auto;
    }
    .cta-banner-content h2 {
      font-size: 36px;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .cta-banner-content p {
      font-size: 16px;
      color: #e0e7ff;
      margin-bottom: 36px;
      line-height: 1.8;
    }
    .cta-form {
      display: flex;
      justify-content: center;
      gap: 12px;
      max-width: 540px;
      margin: 0 auto;
    }
    .cta-input {
      flex: 1;
      padding: 14px 20px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.3);
      background: rgba(255, 255, 255, 0.95);
      font-size: 15px;
      outline: none;
    }
    .cta-input:focus {
      background: #fff;
      border-color: #fff;
    }
    .cta-submit-btn {
      padding: 14px 28px;
      border-radius: var(--radius-md);
      border: none;
      background: var(--bg-dark);
      color: #fff;
      font-weight: 700;
      cursor: pointer;
      transition: var(--transition);
      white-space: nowrap;
    }
    .cta-submit-btn:hover {
      background: #000;
      transform: translateY(-2px);
    }

    /* 统一页脚 */
    .site-footer {
      background: #0b0f19;
      color: #94a3b8;
      padding: 80px 0 30px 0;
      font-size: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 60px;
    }
    .footer-col h4 {
      font-size: 16px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 20px;
    }
    .footer-col p {
      line-height: 1.8;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links a:hover {
      color: #fff;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 30px;
      text-align: center;
      font-size: 13px;
      color: #64748b;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .pain-points-grid, .workflow-timeline, .stats-bar-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .advantage-grid, .product-grid, .case-grid, .testimonial-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        position: fixed;
        top: 76px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 76px);
        background: #fff;
        flex-direction: column;
        padding: 40px 20px;
        gap: 20px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        transition: var(--transition);
        align-items: flex-start;
      }
      .nav-links.active {
        left: 0;
      }
      .pain-points-grid, .workflow-timeline, .stats-bar-grid, .advantage-grid, 
      .product-grid, .case-grid, .testimonial-grid, .news-grid, .story-container, .footer-grid {
        grid-template-columns: 1fr;
      }
      .solution-item, .solution-item.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
        gap: 30px;
      }
      .hero-content h1 {
        font-size: 32px;
      }
      .section-title {
        font-size: 26px;
      }
      .hero-actions {
        flex-direction: column;
      }
      .cta-form {
        flex-direction: column;
      }
    }