:root {
      --primary: #2563eb;
      --primary-gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 50%, #ec4899 100%);
      --accent-warm: #f97316;
      --accent-emerald: #059669;
      --bg-page: #f8fafc;
      --bg-surface: #ffffff;
      --bg-card: #ffffff;
      --bg-card-alt: #f1f5f9;
      --text-main: #0f172a;
      --text-muted: #334155;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --border-focus: #3b82f6;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
      --shadow-md: 0 4px 14px rgba(37,99,235,0.08);
      --shadow-lg: 0 10px 25px -5px rgba(37,99,235,0.12), 0 8px 10px -6px rgba(0,0,0,0.04);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --max-width: 1200px;
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s ease, opacity 0.2s ease;
    }

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .logo-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

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

    .brand-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: #0f172a;
      letter-spacing: -0.5px;
    }

    .brand-badge {
      font-size: 0.75rem;
      padding: 2px 8px;
      border-radius: 999px;
      background: #eff6ff;
      color: #1d4ed8;
      font-weight: 600;
      border: 1px solid #bfdbfe;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li a {
      display: inline-block;
      padding: 8px 12px;
      font-size: 0.93rem;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background: #f1f5f9;
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: 999px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: transform 0.15s ease, box-shadow 0.2s ease, opacity 0.2s ease;
      text-decoration: none;
      white-space: nowrap;
    }

    .btn:active {
      transform: scale(0.98);
    }

    .btn-gradient {
      background: var(--primary-gradient);
      color: #ffffff !important;
      box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
    }

    .btn-gradient:hover {
      box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
      opacity: 0.95;
    }

    .btn-outline {
      background: #ffffff;
      color: var(--primary);
      border-color: #cbd5e1;
    }

    .btn-outline:hover {
      background: #f8fafc;
      border-color: var(--primary);
    }

    .nav-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    .nav-toggle svg {
      width: 24px;
      height: 24px;
      stroke: var(--text-main);
    }

    /* 首屏 Hero - 禁止出现图片 */
    .hero-section {
      position: relative;
      padding: 80px 0 60px;
      background: radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.08) 0%, transparent 40%),
                  radial-gradient(circle at 20% 80%, rgba(37, 99, 235, 0.08) 0%, transparent 45%),
                  linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
      border-bottom: 1px solid var(--border-color);
      overflow: hidden;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }

    .hero-content {
      position: relative;
      z-index: 2;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 14px;
      border-radius: 999px;
      background: #eff6ff;
      border: 1px solid #dbeafe;
      font-size: 0.85rem;
      font-weight: 600;
      color: #1d4ed8;
      margin-bottom: 20px;
    }

    .hero-tag-pulse {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #2563eb;
      box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2);
    }

    .hero-title {
      font-size: 2.65rem;
      line-height: 1.25;
      font-weight: 800;
      color: #0f172a;
      letter-spacing: -0.5px;
      margin-bottom: 20px;
    }

    .hero-desc {
      font-size: 1.125rem;
      line-height: 1.7;
      color: var(--text-muted);
      margin-bottom: 32px;
      max-width: 600px;
    }

    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
      margin-bottom: 36px;
    }

    .hero-btn-official {
      padding: 14px 28px;
      font-size: 1.05rem;
      font-weight: 700;
      letter-spacing: 0.5px;
    }

    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.85rem;
      color: var(--text-light);
    }

    .hero-badges span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: #ffffff;
      padding: 6px 12px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }

    /* Hero 右侧纯 CSS 构筑的科技感卡片集 */
    .hero-visual-board {
      position: relative;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid #e2e8f0;
      padding: 24px;
      box-shadow: var(--shadow-lg);
    }

    .board-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid #f1f5f9;
      padding-bottom: 16px;
      margin-bottom: 20px;
    }

    .board-dots {
      display: flex;
      gap: 6px;
    }

    .board-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }

    .dot-red { background: #ef4444; }
    .dot-yellow { background: #f59e0b; }
    .dot-green { background: #10b981; }

    .board-status {
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--accent-emerald);
      display: flex;
      align-items: center;
      gap: 6px;
      background: #ecfdf5;
      padding: 4px 10px;
      border-radius: 999px;
    }

    .board-cards-stack {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .board-card-item {
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 14px 16px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .board-card-item:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-sm);
      border-color: #cbd5e1;
    }

    .card-meta-left {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .card-icon-shape {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.85rem;
      color: #ffffff;
      flex-shrink: 0;
    }

    .shape-blue { background: linear-gradient(135deg, #2563eb, #3b82f6); }
    .shape-purple { background: linear-gradient(135deg, #7c3aed, #a855f7); }
    .shape-pink { background: linear-gradient(135deg, #ec4899, #f43f5e); }
    .shape-orange { background: linear-gradient(135deg, #f97316, #fb923c); }

    .card-meta-text h4 {
      font-size: 0.92rem;
      color: #0f172a;
      font-weight: 600;
    }

    .card-meta-text p {
      font-size: 0.78rem;
      color: var(--text-light);
    }

    .card-status-pill {
      font-size: 0.75rem;
      padding: 3px 8px;
      border-radius: 6px;
      font-weight: 600;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      color: var(--text-muted);
    }

    /* 数据指标条 */
    .metrics-bar {
      background: #ffffff;
      border-bottom: 1px solid var(--border-color);
      padding: 30px 0;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: center;
    }

    .metric-box h3 {
      font-size: 2.2rem;
      font-weight: 800;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 4px;
    }

    .metric-box p {
      font-size: 0.88rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 通用Section布局 */
    .section-wrap {
      padding: 80px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .section-alt {
      background-color: #ffffff;
    }

    .section-heading {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }

    .section-pill {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 4px 12px;
      border-radius: 999px;
      background: #eff6ff;
      color: #2563eb;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 14px;
    }

    .section-subtitle {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 模型墙与服务矩阵 */
    .model-chips {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 24px;
    }

    .model-chip {
      padding: 6px 14px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 999px;
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--text-muted);
      box-shadow: var(--shadow-sm);
      transition: all 0.2s ease;
    }

    .model-chip:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-1px);
    }

    /* 服务能力卡片网格 */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #cbd5e1;
    }

    .service-badge {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 2px 8px;
      border-radius: 4px;
      background: #eff6ff;
      color: var(--primary);
      margin-bottom: 14px;
      align-self: flex-start;
    }

    .service-card h3 {
      font-size: 1.18rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: #0f172a;
    }

    .service-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .service-features {
      list-style: none;
      font-size: 0.85rem;
      color: var(--text-light);
      margin-bottom: 20px;
      border-top: 1px dashed #e2e8f0;
      padding-top: 12px;
    }

    .service-features li {
      display: flex;
      align-items: center;
      gap: 6px;
      margin-bottom: 6px;
    }

    .service-features li::before {
      content: "✓";
      color: var(--accent-emerald);
      font-weight: 700;
    }

    /* 流程步骤 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .process-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-num {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
      margin-bottom: 16px;
    }

    .process-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .process-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 案例展示区（含合规素材图） */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }

    .case-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

    .case-image-wrap {
      width: 100%;
      aspect-ratio: 16/9;
      background: #f1f5f9;
      overflow: hidden;
    }

    .case-image-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }

    .case-card:hover .case-image-wrap img {
      transform: scale(1.03);
    }

    .case-content {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .case-content h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .case-content p {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 16px;
    }

    /* 对比评测板块 */
    .comparison-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .rating-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(135deg, #eff6ff 0%, #fdf2f8 100%);
      border: 1px solid #dbeafe;
      border-radius: var(--radius-md);
      padding: 20px 28px;
      margin-bottom: 30px;
    }

    .rating-score-box {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .score-badge {
      font-size: 2.4rem;
      font-weight: 900;
      color: #2563eb;
      line-height: 1;
    }

    .score-meta h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: #0f172a;
    }

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

    .rating-stars {
      color: #f59e0b;
      font-size: 1.4rem;
      letter-spacing: 2px;
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.93rem;
    }

    .compare-table th, 
    .compare-table td {
      padding: 16px;
      border-bottom: 1px solid #e2e8f0;
    }

    .compare-table th {
      background: #f8fafc;
      color: #0f172a;
      font-weight: 700;
    }

    .compare-table td:nth-child(2) {
      font-weight: 600;
      color: #2563eb;
      background: rgba(37, 99, 235, 0.02);
    }

    /* 用户评论 */
    .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: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-quote {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
    }

    .review-user-info {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }

    .user-avatar-initial {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: #eff6ff;
      color: #2563eb;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.9rem;
      border: 1px solid #bfdbfe;
    }

    .user-text-meta h4 {
      font-size: 0.92rem;
      font-weight: 700;
      color: #0f172a;
    }

    .user-text-meta p {
      font-size: 0.78rem;
      color: var(--text-light);
    }

    /* FAQ 折叠手风琴 */
    .faq-list {
      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(--shadow-sm);
    }

    .faq-question {
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      padding: 18px 24px;
      font-size: 1rem;
      font-weight: 600;
      color: #0f172a;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      transition: background-color 0.2s ease;
    }

    .faq-question:hover {
      background-color: #f8fafc;
    }

    .faq-icon {
      font-size: 1.25rem;
      transition: transform 0.3s ease;
      color: var(--primary);
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 0.92rem;
      line-height: 1.7;
      color: var(--text-muted);
      border-top: 1px solid #f1f5f9;
      background-color: #fcfdfe;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    /* 表单与需求提报 */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: flex-start;
    }

    .contact-card, .form-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

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

    .form-label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: #0f172a;
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.93rem;
      color: #0f172a;
      background: #f8fafc;
      border: 1px solid #cbd5e1;
      border-radius: var(--radius-sm);
      outline: none;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .form-control:focus {
      border-color: var(--border-focus);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 120px;
    }

    .qr-box {
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 24px;
      background: #f8fafc;
      border-radius: var(--radius-md);
      border: 1px dashed #cbd5e1;
      margin-top: 24px;
      text-align: center;
    }

    .qr-box img {
      max-width: 160px;
      height: auto;
      border-radius: 8px;
      border: 1px solid #e2e8f0;
      margin-bottom: 12px;
    }

    .qr-caption {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-muted);
    }

    /* 行业资讯与文章 */
    .news-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
    }

    .article-links-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      list-style: none;
      margin-top: 16px;
    }

    .article-links-list li a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 16px;
      background: #f8fafc;
      border-radius: var(--radius-sm);
      border: 1px solid #e2e8f0;
      color: var(--text-main);
      font-size: 0.92rem;
      font-weight: 500;
    }

    .article-links-list li a:hover {
      background: #eff6ff;
      border-color: #bfdbfe;
      color: var(--primary);
    }

    /* 友情链接与页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 30px;
      color: var(--text-muted);
    }

    .footer-main-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-brand p {
      font-size: 0.88rem;
      line-height: 1.6;
      color: var(--text-light);
      margin-top: 12px;
      max-width: 320px;
    }

    .footer-links-col h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 16px;
    }

    .footer-links-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links-col ul li a {
      font-size: 0.88rem;
      color: var(--text-light);
    }

    .footer-links-col ul li a:hover {
      color: var(--primary);
    }

    .friend-links-area {
      border-top: 1px solid #f1f5f9;
      padding-top: 24px;
      margin-bottom: 24px;
    }

    .friend-links-title {
      font-size: 0.88rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 12px;
    }

    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.85rem;
    }

    .friend-links-list a {
      color: var(--text-light);
    }

    .friend-links-list a:hover {
      color: var(--primary);
    }

    .footer-bottom {
      border-top: 1px solid #e2e8f0;
      padding-top: 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.82rem;
      color: var(--text-light);
    }

    /* 悬浮工具栏 */
    .floating-toolbar {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--text-main);
      transition: all 0.2s ease;
    }

    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
      transform: translateY(-2px);
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .service-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-main-grid {
        grid-template-columns: 1fr 1fr;
      }
      .nav-links {
        display: none;
      }
      .nav-toggle {
        display: block;
      }
      .site-header.mobile-expanded .nav-links {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 16px 20px;
        box-shadow: var(--shadow-lg);
      }
      .site-header.mobile-expanded .nav-links li {
        width: 100%;
      }
      .site-header.mobile-expanded .nav-links li a {
        display: block;
        padding: 10px 14px;
      }
    }

    @media (max-width: 768px) {
      .hero-title {
        font-size: 2.1rem;
      }
      .service-grid, .reviews-grid, .case-grid {
        grid-template-columns: 1fr;
      }
      .process-timeline {
        grid-template-columns: 1fr;
      }
      .contact-grid {
        grid-template-columns: 1fr;
      }
      .footer-main-grid {
        grid-template-columns: 1fr;
      }
      .rating-banner {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
      }
    }