/* 全局变量与设计系统 - 鲜活高亮科技风 */
    :root {
      --primary: #2563eb;
      --primary-hover: #1d4ed8;
      --primary-light: #eff6ff;
      --accent: #06b6d4;
      --accent-warm: #f97316;
      --accent-gradient: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
      --warm-gradient: linear-gradient(135deg, #f97316 0%, #fbbf24 100%);
      --bg-page: #f8fafc;
      --bg-surface: #ffffff;
      --bg-subtle: #f1f5f9;
      --border-color: #e2e8f0;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
      --shadow-highlight: 0 12px 24px -4px rgba(37, 99, 235, 0.12);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --radius-full: 9999px;
      --transition: all 0.25s ease;
    }

    *, *::before, *::after {
      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;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

    /* 统一标准容器体系 */
    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航栏 */
    .site-header {
      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-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 700;
      font-size: 1.25rem;
      color: var(--text-main);
    }

    .brand-logo img.ai-page-logo {
      max-height: 42px;
      width: auto;
      display: block;
    }

    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0; /* 严格满足要求：gap属性设置为0 */
    }

    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 0.92rem;
      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: var(--primary-light);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      font-size: 0.92rem;
      font-weight: 600;
      border-radius: var(--radius-full);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--accent-gradient);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
      color: #ffffff;
    }

    .btn-warm {
      background: var(--warm-gradient);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(249, 115, 22, 0.25);
    }

    .btn-warm:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(249, 115, 22, 0.35);
      color: #ffffff;
    }

    .btn-outline {
      border-color: var(--border-color);
      background: var(--bg-surface);
      color: var(--text-main);
    }

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

    .btn-sm {
      padding: 6px 14px;
      font-size: 0.85rem;
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
    }

    /* Section 通用规范 */
    .section-padding {
      padding: 72px 0;
    }

    .section-subtle {
      background: var(--bg-subtle);
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 48px auto;
    }

    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: var(--radius-full);
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.3;
    }

    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 首屏 Hero 区域 - 严禁出现任何图片，高亮科技感纯CSS构建 */
    .hero-section {
      position: relative;
      padding: 80px 0 90px 0;
      background: linear-gradient(180deg, #f0f7ff 0%, #f8fafc 100%);
      border-bottom: 1px solid var(--border-color);
      overflow: hidden;
    }

    .hero-glow-1 {
      position: absolute;
      top: -80px;
      left: 10%;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(37, 99, 235, 0.12) 0%, rgba(255,255,255,0) 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .hero-glow-2 {
      position: absolute;
      top: 20%;
      right: 5%;
      width: 450px;
      height: 450px;
      background: radial-gradient(circle, rgba(6, 182, 212, 0.12) 0%, rgba(255,255,255,0) 70%);
      border-radius: 50%;
      pointer-events: none;
    }

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

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 1px solid #dbeafe;
      padding: 6px 18px;
      border-radius: var(--radius-full);
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--primary);
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }

    .hero-tag-dot {
      width: 8px;
      height: 8px;
      background: #10b981;
      border-radius: 50%;
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
    }

    .hero-title {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-title span {
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      max-width: 860px;
      margin: 0 auto 36px auto;
      line-height: 1.8;
    }

    .hero-btn-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    .hero-btn-main {
      padding: 14px 36px;
      font-size: 1.05rem;
    }

    /* 首屏数据指标卡片 (纯CSS/无图) */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 1040px;
      margin: 0 auto;
    }

    .hero-stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px 18px;
      text-align: center;
      box-shadow: var(--shadow-md);
      transition: var(--transition);
    }

    .hero-stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-highlight);
      border-color: #bfdbfe;
    }

    .stat-num {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 6px;
    }

    .stat-label {
      font-size: 0.88rem;
      color: var(--text-light);
      font-weight: 500;
    }

    /* 服务能力与场景矩阵卡片 */
    .cards-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .feature-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

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

    .feature-icon-badge {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .feature-title {
      font-size: 1.18rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .feature-text {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      flex-grow: 1;
    }

    .feature-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: 14px;
    }

    .tag-item {
      font-size: 0.78rem;
      background: var(--bg-subtle);
      color: var(--text-muted);
      padding: 3px 8px;
      border-radius: var(--radius-sm);
    }

    /* 平台介绍与模型生态标签云 */
    .intro-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
      margin-bottom: 36px;
    }

    .models-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 24px;
    }

    .model-chip {
      background: var(--bg-subtle);
      border: 1px solid var(--border-color);
      padding: 8px 18px;
      border-radius: var(--radius-full);
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      transition: var(--transition);
    }

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

    /* 标准流程时间线 */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .flow-step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-number {
      position: absolute;
      top: -14px;
      left: 20px;
      background: var(--accent-gradient);
      color: #ffffff;
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.82rem;
      font-weight: 700;
      box-shadow: var(--shadow-sm);
    }

    .step-title {
      font-size: 1.05rem;
      font-weight: 700;
      margin-top: 8px;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .step-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 案例中心展示网格 */
    .showcase-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

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

    .showcase-img-wrap {
      width: 100%;
      background: #f1f5f9;
      position: relative;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .showcase-img-wrap img {
      width: 100%;
      height: auto;
      object-fit: contain;
      display: block;
      transition: transform 0.4s ease;
    }

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

    .showcase-body {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .showcase-badge {
      align-self: flex-start;
      font-size: 0.78rem;
      font-weight: 600;
      color: var(--primary);
      background: var(--primary-light);
      padding: 2px 10px;
      border-radius: var(--radius-full);
      margin-bottom: 8px;
    }

    .showcase-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .showcase-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 对比评测表格与卡片 */
    .compare-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-md);
    }

    .score-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(135deg, #eff6ff 0%, #e0f2fe 100%);
      border: 1px solid #bfdbfe;
      border-radius: var(--radius-md);
      padding: 20px 28px;
      margin-bottom: 28px;
    }

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

    .score-stars {
      font-size: 1.3rem;
      color: #f59e0b;
      letter-spacing: 2px;
    }

    .score-badge-text {
      font-weight: 700;
      font-size: 1.1rem;
      color: var(--text-main);
    }

    .score-num {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--primary);
    }

    .score-num small {
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-muted);
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }

    .compare-table th, 
    .compare-table td {
      padding: 16px 18px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.92rem;
    }

    .compare-table th {
      background: var(--bg-subtle);
      font-weight: 700;
      color: var(--text-main);
    }

    .compare-table tr:hover td {
      background: #f8fafc;
    }

    .compare-table .highlight-col {
      background: rgba(37, 99, 235, 0.03);
      font-weight: 600;
      color: var(--primary);
    }

    /* 用户评论网格 */
    .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-text {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 18px;
      font-style: italic;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px dashed var(--border-color);
      padding-top: 14px;
    }

    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }

    .author-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .author-info p {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* FAQ 折叠面板 */
    .faq-grid {
      max-width: 900px;
      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);
      transition: var(--transition);
    }

    .faq-item:hover {
      border-color: #cbd5e1;
    }

    .faq-question {
      padding: 18px 22px;
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      user-select: none;
    }

    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.3s ease;
      color: var(--primary);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #fafbfc;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      padding: 0 22px 20px 22px;
      max-height: 400px;
    }

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

    /* 表单与需求匹配 */
    .form-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

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

    .form-group-full {
      grid-column: 1 / -1;
    }

    .form-label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.92rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      outline: none;
      transition: var(--transition);
      background: var(--bg-surface);
      color: var(--text-main);
      font-family: inherit;
    }

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

    textarea.form-control {
      min-height: 110px;
      resize: vertical;
    }

    /* 资讯与百科列表 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .article-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .article-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .article-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 14px;
    }

    .article-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      font-size: 0.82rem;
    }

    .article-links a {
      color: var(--primary);
      background: var(--primary-light);
      padding: 4px 10px;
      border-radius: var(--radius-sm);
    }

    .article-links a:hover {
      background: var(--primary);
      color: #ffffff;
    }

    /* 品牌客服与社交矩阵 */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }

    .contact-info-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
    }

    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      margin-bottom: 18px;
    }

    .contact-icon-bubble {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      flex-shrink: 0;
    }

    .contact-details h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

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

    .qrcode-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
    }

    .qrcode-box img {
      max-width: 140px;
      width: 100%;
      height: auto;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      margin-bottom: 12px;
    }

    /* 友情链接与底部区域 */
    .links-section {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 30px 0;
    }

    .links-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .links-list a {
      font-size: 0.88rem;
      color: var(--text-muted);
      background: var(--bg-subtle);
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }

    .links-list a:hover {
      color: var(--primary);
      border-color: var(--primary);
      background: var(--primary-light);
    }

    .site-footer {
      background: #f1f5f9;
      border-top: 1px solid var(--border-color);
      padding: 24px 0;
      text-align: center;
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .site-footer a {
      color: var(--text-muted);
    }

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

    /* 浮动客服与返回顶部 */
    .float-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;
      color: var(--primary);
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-size: 1.1rem;
      font-weight: bold;
      transition: var(--transition);
      position: relative;
    }

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

    .float-qr-pop {
      position: absolute;
      right: 56px;
      bottom: 0;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 12px;
      box-shadow: var(--shadow-lg);
      display: none;
      flex-direction: column;
      align-items: center;
      width: 140px;
    }

    .float-qr-pop img {
      width: 110px;
      height: 110px;
      margin-bottom: 6px;
    }

    .float-qr-pop span {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    .float-btn:hover .float-qr-pop {
      display: flex;
    }

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .cards-grid-4, .hero-stats-grid, .flow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .cards-grid-3, .showcase-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
        gap: 0;
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 10px 16px;
      }
      .hero-title {
        font-size: 2rem;
      }
      .cards-grid-3, .cards-grid-4, .showcase-grid, .reviews-grid, .articles-grid, .contact-grid, .form-grid {
        grid-template-columns: 1fr;
      }
      .hero-stats-grid, .flow-steps {
        grid-template-columns: 1fr;
      }
      .score-banner {
        flex-direction: column;
        text-align: center;
        gap: 12px;
      }
    }