/* CSS 全局变量及重置 */
    :root {
      --primary: #e61a23;
      --primary-hover: #c0151c;
      --primary-light: #fff1f0;
      --secondary: #22252a;
      --accent: #faad14;
      --bg-base: #fcf9f9;
      --bg-white: #ffffff;
      --text-main: #2d3748;
      --text-muted: #718096;
      --border-color: #f3ecec;
      --shadow-sm: 0 2px 8px rgba(230, 26, 35, 0.04);
      --shadow-md: 0 8px 24px rgba(230, 26, 35, 0.08);
      --shadow-lg: 0 16px 36px rgba(230, 26, 35, 0.12);
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
      --max-width: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

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

    ul, ol {
      list-style: none;
    }

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

    /* 辅助工具类 */
    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 20px;
      width: 100%;
    }

    .section {
      padding: 80px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .section-title {
      text-align: center;
      margin-bottom: 50px;
    }

    .section-title h2 {
      font-size: 2rem;
      color: var(--secondary);
      position: relative;
      display: inline-block;
      padding-bottom: 12px;
    }

    .section-title h2::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 60px;
      height: 4px;
      background: var(--primary);
      border-radius: 2px;
    }

    .section-title p {
      color: var(--text-muted);
      margin-top: 12px;
      font-size: 1.05rem;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      border-radius: 6px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      outline: none;
    }

    .btn-primary {
      background-color: var(--primary);
      color: var(--bg-white);
      box-shadow: 0 4px 14px rgba(230, 26, 35, 0.25);
    }

    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(230, 26, 35, 0.35);
    }

    .btn-secondary {
      background-color: transparent;
      border-color: var(--primary);
      color: var(--primary);
    }

    .btn-secondary:hover {
      background-color: var(--primary-light);
      transform: translateY(-2px);
    }

    /* 顶部导航 */
    .header-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 70px;
    }

    .logo-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }

    .brand-name {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--secondary);
      background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .nav-item {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
    }

    .nav-item:hover, .nav-item.active {
      color: var(--primary);
    }

    .nav-btn-group {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .nav-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 4px;
    }

    .nav-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--secondary);
      margin: 5px 0;
      transition: var(--transition);
    }

    /* 首屏 Hero */
    .hero-section {
      padding: 100px 0 80px;
      background: radial-gradient(circle at 90% 10%, #fff0f0 0%, var(--bg-white) 100%);
      text-align: center;
      position: relative;
    }

    .hero-content {
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-tag {
      display: inline-block;
      padding: 6px 16px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 50px;
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 24px;
      border: 1px solid rgba(230, 26, 35, 0.15);
    }

    .hero-section h1 {
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--secondary);
      line-height: 1.25;
      margin-bottom: 24px;
    }

    .hero-section h1 span {
      color: var(--primary);
      position: relative;
    }

    .hero-desc {
      font-size: 1.2rem;
      color: var(--text-muted);
      margin-bottom: 40px;
      line-height: 1.6;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 50px;
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
      max-width: 700px;
      margin: 0 auto;
      background: var(--bg-white);
      padding: 24px;
      border-radius: 12px;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
    }

    .stat-item h3 {
      font-size: 1.8rem;
      color: var(--primary);
      font-weight: 800;
      margin-bottom: 6px;
    }

    .stat-item p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 关于我们 & 平台介绍 */
    .about-container {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 50px;
      align-items: center;
    }

    .about-text h3 {
      font-size: 1.8rem;
      color: var(--secondary);
      margin-bottom: 20px;
    }

    .about-p {
      color: var(--text-muted);
      margin-bottom: 16px;
      font-size: 1rem;
      text-align: justify;
    }

    .feature-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-top: 30px;
    }

    .feature-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
    }

    .feature-item svg {
      width: 24px;
      height: 24px;
      color: var(--primary);
      flex-shrink: 0;
    }

    .feature-item div h4 {
      font-size: 1rem;
      color: var(--secondary);
      margin-bottom: 4px;
    }

    .feature-item div p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 平台优势侧栏卡片 */
    .about-card {
      background: var(--bg-white);
      border-radius: 16px;
      padding: 35px;
      box-shadow: var(--shadow-lg);
      border-top: 5px solid var(--primary);
    }

    .about-card h4 {
      font-size: 1.4rem;
      margin-bottom: 20px;
      color: var(--secondary);
    }

    .tagline-item {
      display: flex;
      align-items: center;
      gap: 15px;
      padding: 12px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .tagline-item:last-child {
      border: none;
    }

    .tagline-icon {
      background: var(--primary-light);
      color: var(--primary);
      width: 36px;
      height: 36px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      flex-shrink: 0;
    }

    /* 全平台 AIGC 服务 */
    .model-badge-container {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px;
      max-width: 1000px;
      margin: 0 auto;
    }

    .model-badge {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      padding: 10px 20px;
      border-radius: 50px;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-main);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      cursor: default;
    }

    .model-badge:hover {
      background: var(--primary);
      color: var(--bg-white);
      border-color: var(--primary);
      transform: translateY(-2px);
    }

    /* 一站式 AIGC 制作 & 行业解决方案 */
    .solution-container {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 50px;
      align-items: center;
    }

    .solution-showcase {
      position: relative;
    }

    .solution-img-wrapper {
      border-radius: 16px;
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      background-color: var(--bg-white);
      line-height: 0;
    }

    .solution-img-wrapper img {
      width: 100%;
      height: auto;
      object-fit: cover;
    }

    .solution-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

    .solution-card {
      background: var(--bg-white);
      padding: 24px;
      border-radius: 12px;
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }

    .solution-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }

    .sol-icon {
      width: 44px;
      height: 44px;
      border-radius: 8px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
    }

    .solution-card h4 {
      font-size: 1.1rem;
      color: var(--secondary);
      margin-bottom: 8px;
    }

    .solution-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 全国服务网络 & 技术标准 */
    .network-container {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .network-card {
      background: var(--bg-white);
      padding: 30px;
      border-radius: 12px;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
      text-align: center;
    }

    .network-card h3 {
      font-size: 1.3rem;
      color: var(--secondary);
      margin-bottom: 12px;
    }

    .network-card p {
      color: var(--text-muted);
      font-size: 0.9rem;
    }

    /* 流程步骤 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
      margin-top: 40px;
    }

    .process-step {
      background: var(--bg-white);
      padding: 30px 20px;
      border-radius: 12px;
      border: 1px solid var(--border-color);
      text-align: center;
      position: relative;
      z-index: 1;
    }

    .step-num {
      width: 40px;
      height: 40px;
      background: var(--primary);
      color: var(--bg-white);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      margin: 0 auto 20px;
      box-shadow: 0 4px 10px rgba(230, 26, 35, 0.2);
    }

    .process-step h4 {
      font-size: 1.1rem;
      margin-bottom: 10px;
      color: var(--secondary);
    }

    .process-step p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 对比评测 */
    .eval-container {
      display: grid;
      grid-template-columns: 1fr 2fr;
      gap: 40px;
      align-items: center;
    }

    .eval-score-card {
      background: linear-gradient(135deg, var(--secondary) 0%, #17191d 100%);
      color: var(--bg-white);
      border-radius: 16px;
      padding: 40px 30px;
      text-align: center;
      box-shadow: var(--shadow-lg);
    }

    .rating-badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--primary);
      padding: 8px 18px;
      border-radius: 50px;
      font-size: 0.9rem;
      font-weight: 700;
      margin-bottom: 20px;
    }

    .rating-score {
      font-size: 4rem;
      font-weight: 800;
      color: var(--accent);
      line-height: 1;
      margin-bottom: 10px;
    }

    .rating-stars {
      color: var(--accent);
      font-size: 1.4rem;
      margin-bottom: 20px;
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
      background: var(--bg-white);
      border-radius: 12px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 500px;
    }

    .eval-table th, .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }

    .eval-table th {
      background-color: #fafafa;
      color: var(--secondary);
      font-weight: 700;
    }

    .eval-table tr:last-child td {
      border-bottom: none;
    }

    .eval-table td strong {
      color: var(--primary);
    }

    /* 培训业务 */
    .training-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 20px;
    }

    .training-card {
      background: var(--bg-white);
      border-radius: 12px;
      padding: 24px 20px;
      border: 1px solid var(--border-color);
      text-align: center;
      transition: var(--transition);
    }

    .training-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }

    .train-icon {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      font-size: 1.2rem;
    }

    .training-card h4 {
      font-size: 0.95rem;
      color: var(--secondary);
      margin-bottom: 8px;
    }

    .training-card p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 案例中心 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .case-card {
      background: var(--bg-white);
      border-radius: 16px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }

    .case-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }

    .case-img-container {
      line-height: 0;
      position: relative;
    }

    .case-card h4 {
      font-size: 1.2rem;
      padding: 20px 20px 8px;
      color: var(--secondary);
    }

    .case-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      padding: 0 20px 20px;
    }

    /* 用户评论 */
    .comment-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .comment-card {
      background: var(--bg-white);
      padding: 30px;
      border-radius: 16px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      position: relative;
    }

    .comment-user {
      display: flex;
      align-items: center;
      gap: 15px;
      margin-bottom: 18px;
    }

    .user-avatar {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }

    .user-info h5 {
      font-size: 0.95rem;
      color: var(--secondary);
    }

    .user-info span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .comment-stars {
      color: var(--accent);
      margin-bottom: 12px;
      font-size: 0.9rem;
    }

    .comment-text {
      font-size: 0.9rem;
      color: var(--text-main);
      line-height: 1.6;
    }

    /* Token 比价 */
    .token-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }

    /* 常见用户问题 FAQ & 自助排查 & 百科 */
    .faq-wrapper {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 40px;
    }

    .faq-accordion {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    details {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      overflow: hidden;
      transition: var(--transition);
    }

    details[open] {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }

    summary {
      padding: 16px 20px;
      font-weight: 600;
      color: var(--secondary);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      outline: none;
    }

    summary::-webkit-details-marker {
      display: none;
    }

    summary::after {
      content: '+';
      font-size: 1.2rem;
      color: var(--primary);
      font-weight: bold;
    }

    details[open] summary::after {
      content: '-';
    }

    .faq-answer {
      padding: 0 20px 20px;
      color: var(--text-muted);
      font-size: 0.9rem;
    }

    /* 百科与自助排查侧边栏 */
    .faq-sidebar-widget {
      background: var(--bg-white);
      border-radius: 12px;
      border: 1px solid var(--border-color);
      padding: 24px;
      margin-bottom: 24px;
    }

    .faq-sidebar-widget:last-child {
      margin-bottom: 0;
    }

    .faq-sidebar-widget h4 {
      font-size: 1.1rem;
      margin-bottom: 16px;
      color: var(--secondary);
      border-left: 4px solid var(--primary);
      padding-left: 10px;
    }

    .widget-list li {
      margin-bottom: 12px;
      font-size: 0.9rem;
    }

    .widget-list li strong {
      color: var(--secondary);
    }

    .widget-list li p {
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* 行业资讯 / 知识库 */
    .article-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .article-card {
      background: var(--bg-white);
      border-radius: 12px;
      border: 1px solid var(--border-color);
      padding: 24px;
      transition: var(--transition);
    }

    .article-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
      transform: translateY(-2px);
    }

    .article-tag {
      display: inline-block;
      padding: 4px 10px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.75rem;
      border-radius: 4px;
      margin-bottom: 12px;
    }

    .article-card h4 {
      font-size: 1.05rem;
      color: var(--secondary);
      margin-bottom: 12px;
      line-height: 1.4;
    }

    .article-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    .article-link {
      color: var(--primary);
      font-weight: 600;
      font-size: 0.9rem;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .article-link:hover {
      text-decoration: underline;
    }

    /* 联系我们 & 加盟代理 */
    .contact-container {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 50px;
    }

    .contact-info-panel {
      background: var(--bg-white);
      padding: 40px;
      border-radius: 16px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .contact-info-panel h3 {
      font-size: 1.5rem;
      margin-bottom: 30px;
      color: var(--secondary);
    }

    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 15px;
      margin-bottom: 24px;
    }

    .contact-icon {
      background: var(--primary-light);
      color: var(--primary);
      width: 40px;
      height: 40px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .contact-detail h4 {
      font-size: 1rem;
      color: var(--secondary);
      margin-bottom: 4px;
    }

    .contact-detail p, .contact-detail a {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    .qr-box {
      margin-top: 30px;
      display: flex;
      gap: 20px;
      align-items: center;
    }

    .qr-box img {
      width: 110px;
      height: 110px;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 4px;
    }

    /* 需求表单 */
    .form-panel {
      background: var(--bg-white);
      padding: 40px;
      border-radius: 16px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }

    .form-panel h3 {
      font-size: 1.5rem;
      margin-bottom: 24px;
      color: var(--secondary);
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-label {
      display: block;
      margin-bottom: 8px;
      font-weight: 600;
      font-size: 0.9rem;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: 6px;
      outline: none;
      transition: var(--transition);
      background-color: var(--bg-base);
    }

    .form-control:focus {
      border-color: var(--primary);
      background-color: var(--bg-white);
      box-shadow: 0 0 0 3px rgba(230, 26, 35, 0.1);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }

    /* 页脚 */
    .footer {
      background-color: var(--secondary);
      color: #a0aec0;
      padding: 60px 0 20px;
      border-top: 5px solid var(--primary);
    }

    .footer-top {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1.5fr;
      gap: 50px;
      margin-bottom: 40px;
    }

    .footer-brand h4 {
      color: var(--bg-white);
      font-size: 1.4rem;
      margin-bottom: 20px;
    }

    .footer-brand p {
      font-size: 0.9rem;
      line-height: 1.7;
    }

    .footer-links h4 {
      color: var(--bg-white);
      font-size: 1.1rem;
      margin-bottom: 20px;
    }

    .footer-links-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
      font-size: 0.9rem;
    }

    .footer-links-grid a:hover {
      color: var(--primary);
    }

    .footer-friendships h4 {
      color: var(--bg-white);
      font-size: 1.1rem;
      margin-bottom: 20px;
    }

    .friendship-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      font-size: 0.85rem;
    }

    .friendship-links a {
      background: rgba(255, 255, 255, 0.05);
      padding: 6px 12px;
      border-radius: 4px;
    }

    .friendship-links a:hover {
      background: var(--primary);
      color: var(--bg-white);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 20px;
      text-align: center;
      font-size: 0.85rem;
    }

    /* 悬浮小挂件 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 40px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      z-index: 999;
    }

    .widget-btn {
      width: 48px;
      height: 48px;
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-md);
      cursor: pointer;
      position: relative;
      transition: var(--transition);
      color: var(--text-main);
    }

    .widget-btn:hover {
      background: var(--primary);
      color: var(--bg-white);
      border-color: var(--primary);
    }

    .widget-qr {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: var(--bg-white);
      padding: 15px;
      border-radius: 8px;
      box-shadow: var(--shadow-lg);
      display: none;
      flex-direction: column;
      align-items: center;
      border: 1px solid var(--border-color);
      width: 150px;
    }

    .widget-qr img {
      width: 120px;
      height: 120px;
    }

    .widget-qr span {
      font-size: 0.75rem;
      color: var(--text-main);
      margin-top: 8px;
    }

    .widget-btn:hover .widget-qr {
      display: flex;
    }

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .hero-section h1 { font-size: 2.2rem; }
      .about-container { grid-template-columns: 1fr; gap: 40px; }
      .solution-container { grid-template-columns: 1fr; gap: 40px; }
      .network-container { grid-template-columns: 1fr; }
      .process-timeline { grid-template-columns: repeat(2, 1fr); }
      .eval-container { grid-template-columns: 1fr; }
      .training-grid { grid-template-columns: repeat(3, 1fr); }
      .case-grid { grid-template-columns: 1fr 1fr; }
      .comment-grid { grid-template-columns: 1fr 1fr; }
      .token-grid { grid-template-columns: 1fr; }
      .faq-wrapper { grid-template-columns: 1fr; }
      .article-grid { grid-template-columns: 1fr 1fr; }
      .contact-container { grid-template-columns: 1fr; }
      .footer-top { grid-template-columns: 1fr; gap: 30px; }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }

      .nav-links.active {
        display: flex;
      }

      .nav-btn-group {
        display: none;
      }

      .nav-toggle {
        display: block;
      }

      .hero-stats {
        grid-template-columns: 1fr;
        gap: 15px;
      }

      .process-timeline {
        grid-template-columns: 1fr;
      }

      .training-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .case-grid {
        grid-template-columns: 1fr;
      }

      .comment-grid {
        grid-template-columns: 1fr;
      }

      .article-grid {
        grid-template-columns: 1fr;
      }
    }