/* 全局变量与渐变青科技风配色 */
    :root {
      --primary: #06b6d4;
      --primary-dark: #0891b2;
      --primary-light: #ecfeff;
      --secondary: #0ea5e9;
      --accent: #10b981;
      --accent-dark: #059669;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --bg-alt: #f0fdfa;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --border-focus: #a5f3fc;
      --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
      --shadow-md: 0 4px 12px rgba(6, 182, 212, 0.08);
      --shadow-lg: 0 10px 25px rgba(6, 182, 212, 0.12);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --transition: all 0.25s ease-in-out;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      color: var(--primary-dark);
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover {
      color: var(--secondary);
    }

    /* 统一居中主容器 */
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      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-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }
    .brand-logo-wrap .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
      display: block;
    }
    .brand-name {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .brand-tag {
      font-size: 11px;
      background: linear-gradient(135deg, #ecfeff, #cffafe);
      color: var(--primary-dark);
      padding: 2px 8px;
      border-radius: 20px;
      border: 1px solid var(--border-focus);
      font-weight: 600;
    }

    .nav-menu {
      display: flex;
      align-items: center;
    }
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0; /* 强制满足要求 */
    }
    .nav-links li a {
      display: inline-block;
      padding: 8px 12px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }
    .nav-links li a:hover {
      color: var(--primary-dark);
      background-color: var(--primary-light);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-left: 16px;
    }
    .btn-nav-portal {
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #ffffff !important;
      padding: 8px 18px;
      font-size: 14px;
      font-weight: 600;
      border-radius: 30px;
      box-shadow: 0 2px 8px rgba(6, 182, 212, 0.3);
    }
    .btn-nav-portal:hover {
      opacity: 0.92;
      transform: translateY(-1px);
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      padding: 6px 10px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      font-size: 18px;
      color: var(--text-main);
    }

    /* 醒目标题与板块修饰 */
    .section-padding {
      padding: 68px 0;
      position: relative;
    }
    .section-alt {
      background: linear-gradient(180deg, #f0fdfa 0%, #ffffff 100%);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px;
    }
    .section-badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary-dark);
      background: #cffafe;
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 30px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 首屏 HERO 区域 - 严禁出现图片 */
    .hero-section {
      padding: 72px 0 60px;
      background: radial-gradient(circle at 50% 20%, #e0f2fe 0%, #f0fdfa 50%, #f8fafc 100%);
      position: relative;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-content {
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
    }
    .hero-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid #a5f3fc;
      border-radius: 30px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary-dark);
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 40px;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.8px;
    }
    .hero-title span {
      background: linear-gradient(135deg, #0284c7, #06b6d4, #10b981);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 17px;
      color: var(--text-muted);
      max-width: 740px;
      margin: 0 auto 32px;
      line-height: 1.7;
    }
    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }
    .btn-hero-primary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: linear-gradient(135deg, #0284c7 0%, #06b6d4 50%, #10b981 100%);
      color: #ffffff !important;
      padding: 14px 34px;
      font-size: 16px;
      font-weight: 700;
      border-radius: 40px;
      box-shadow: 0 8px 20px rgba(6, 182, 212, 0.35);
      transition: var(--transition);
    }
    .btn-hero-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 28px rgba(6, 182, 212, 0.45);
    }
    .btn-hero-secondary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid var(--border-color);
      padding: 14px 28px;
      font-size: 15px;
      font-weight: 600;
      border-radius: 40px;
      box-shadow: var(--shadow-sm);
    }
    .btn-hero-secondary:hover {
      background: var(--bg-alt);
      border-color: var(--primary);
      color: var(--primary-dark);
    }

    /* 首屏纯CSS科技数据卡片 */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 10px;
    }
    .stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px 16px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .stat-card:hover {
      border-color: var(--primary);
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }
    .stat-number {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary-dark);
      display: block;
      margin-bottom: 4px;
    }
    .stat-label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 聚合模型滚动条 */
    .model-tags-bar {
      margin-top: 36px;
      padding: 16px 20px;
      background: #ffffff;
      border: 1px dashed #a5f3fc;
      border-radius: var(--radius-md);
      text-align: center;
    }
    .model-tags-title {
      font-size: 13px;
      font-weight: 700;
      color: var(--text-light);
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
    }
    .tag-item {
      font-size: 12px;
      padding: 4px 10px;
      background: var(--bg-main);
      color: var(--text-main);
      border: 1px solid var(--border-color);
      border-radius: 4px;
      font-weight: 500;
    }
    .tag-item.highlight {
      background: #ecfeff;
      border-color: #a5f3fc;
      color: var(--primary-dark);
      font-weight: 600;
    }

    /* 通用卡片与网格体系 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    /* 服务卡片 */
    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .service-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }
    .service-icon {
      width: 48px;
      height: 48px;
      background: linear-gradient(135deg, #cffafe, #ecfeff);
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-md);
      font-size: 22px;
      margin-bottom: 18px;
      border: 1px solid #a5f3fc;
    }
    .service-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .service-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .service-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }
    .service-tag {
      font-size: 11px;
      padding: 2px 8px;
      background: var(--bg-alt);
      color: var(--primary-dark);
      border-radius: 4px;
      font-weight: 500;
    }

    /* 一站式创作场景卡片 */
    .scene-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      transition: var(--transition);
    }
    .scene-card:hover {
      border-color: var(--secondary);
      box-shadow: var(--shadow-md);
    }
    .scene-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 10px;
    }
    .scene-name {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
    }
    .scene-badge {
      font-size: 11px;
      color: #059669;
      background: #d1fae5;
      padding: 2px 6px;
      border-radius: 4px;
      font-weight: 600;
    }
    .scene-body {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 对比评测表格板块 */
    .eval-highlight-box {
      background: linear-gradient(135deg, #0891b2, #0284c7);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 30px;
      margin-bottom: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }
    .eval-score-wrap {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .eval-score-num {
      font-size: 48px;
      font-weight: 900;
      line-height: 1;
      color: #a5f3fc;
    }
    .eval-score-stars {
      color: #fbbf24;
      font-size: 20px;
      letter-spacing: 2px;
      margin-bottom: 4px;
    }
    .eval-score-text {
      font-size: 14px;
      opacity: 0.9;
    }
    .eval-feature-list {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .eval-feature-pill {
      background: rgba(255, 255, 255, 0.15);
      border: 1px solid rgba(255, 255, 255, 0.25);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 13px;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
    }
    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .eval-table th, .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .eval-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }
    .eval-table tr:last-child td {
      border-bottom: none;
    }
    .eval-table .col-highlight {
      background: #f0fdfa;
      font-weight: 600;
      color: var(--primary-dark);
    }
    .status-yes {
      color: #059669;
      font-weight: 700;
    }
    .status-no {
      color: #94a3b8;
    }

    /* 流程步骤 */
    .step-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
    }
    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px 14px;
      text-align: center;
      position: relative;
    }
    .step-idx {
      width: 32px;
      height: 32px;
      background: var(--primary-light);
      color: var(--primary-dark);
      border: 1px solid var(--border-focus);
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 12px;
      font-size: 14px;
    }
    .step-title {
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .step-desc {
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.4;
    }

    /* 案例图片展示 (在下方内容区合法引入图片) */
    .case-gallery-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 20px;
    }
    .case-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .case-item-media {
      width: 100%;
      height: 220px;
      overflow: hidden;
      background: #e2e8f0;
    }
    .case-item-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }
    .case-item:hover .case-item-media img {
      transform: scale(1.05);
    }
    .case-item-content {
      padding: 18px;
    }
    .case-tag {
      font-size: 11px;
      color: var(--primary-dark);
      font-weight: 700;
      margin-bottom: 6px;
      display: block;
    }
    .case-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .case-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    .banner-strip {
      margin-top: 30px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }
    .banner-thumb {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      background: #fff;
    }
    .banner-thumb img {
      width: 100%;
      height: 130px;
      object-fit: cover;
      display: block;
    }

    /* 客户评价卡片 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .review-stars {
      color: #fbbf24;
      font-size: 14px;
      margin-bottom: 12px;
    }
    .review-content {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      font-style: italic;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }
    .author-avatar {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, #06b6d4, #0ea5e9);
      color: #fff;
      font-weight: 700;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
    }
    .author-info h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-info p {
      font-size: 12px;
      color: var(--text-light);
    }

    /* 需求匹配与交互表单 */
    .match-form-wrapper {
      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: 18px;
    }
    .form-full {
      grid-column: span 2;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-label {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
      background: #f8fafc;
    }
    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }
    .btn-submit {
      background: linear-gradient(135deg, #0891b2, #0284c7);
      color: #ffffff;
      border: none;
      padding: 14px 28px;
      font-size: 15px;
      font-weight: 700;
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: var(--transition);
      width: 100%;
    }
    .btn-submit:hover {
      opacity: 0.93;
      transform: translateY(-1px);
    }

    /* 常见问题 FAQ 折叠面板 */
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item:hover {
      border-color: var(--primary);
    }
    .faq-question {
      padding: 18px 20px;
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }
    .faq-toggle-icon {
      font-size: 18px;
      color: var(--primary-dark);
      transition: transform 0.25s ease;
    }
    .faq-answer {
      display: none;
      padding: 0 20px 18px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      border-top: 1px solid #f8fafc;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }

    /* 文章与资讯列表 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .article-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-sm);
    }
    .article-date {
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .article-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .article-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary-dark);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 联系与客服专区 */
    .contact-card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-bottom: 30px;
    }
    .contact-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
    }
    .contact-qr {
      width: 140px;
      height: 140px;
      margin: 12px auto 8px;
      background: #f8fafc;
      padding: 6px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
    }
    .contact-qr img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      display: block;
    }

    /* 底部通用规范 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 50px 0 24px;
      border-top: 1px solid #1e293b;
      font-size: 13px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 36px;
    }
    .footer-brand h3 {
      color: #f8fafc;
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .footer-brand p {
      color: #94a3b8;
      line-height: 1.6;
      max-width: 320px;
    }
    .footer-col h4 {
      color: #f8fafc;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 14px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-links a {
      color: #94a3b8;
      text-decoration: none;
    }
    .footer-links a:hover {
      color: #38bdf8;
    }
    .friend-links-wrap {
      border-top: 1px solid #1e293b;
      padding-top: 20px;
      margin-bottom: 20px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
    }
    .friend-links-title {
      color: #cbd5e1;
      font-weight: 600;
      font-size: 13px;
    }
    .friend-links-wrap a {
      color: #94a3b8;
      margin-right: 8px;
    }
    .friend-links-wrap a:hover {
      color: #38bdf8;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 20px;
      text-align: center;
      color: #64748b;
      font-size: 12px;
    }

    /* 浮动工具栏 */
    .floating-tools {
      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;
      color: var(--primary-dark);
      cursor: pointer;
      font-size: 18px;
      transition: var(--transition);
    }
    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: translateY(-2px);
    }

    /* 响应式适配 */
    @media (max-width: 992px) {
      .hero-title { font-size: 32px; }
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .grid-3 { grid-template-columns: repeat(2, 1fr); }
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .step-grid { grid-template-columns: repeat(3, 1fr); }
      .case-gallery-grid { grid-template-columns: 1fr; }
      .reviews-grid { grid-template-columns: 1fr; }
      .articles-grid { grid-template-columns: 1fr; }
      .contact-card-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .nav-menu { display: none; }
      .mobile-menu-btn { display: block; }
    }

    @media (max-width: 640px) {
      .hero-title { font-size: 26px; }
      .hero-stats-grid { grid-template-columns: 1fr; }
      .grid-3 { grid-template-columns: 1fr; }
      .grid-2 { grid-template-columns: 1fr; }
      .grid-4 { grid-template-columns: 1fr; }
      .step-grid { grid-template-columns: repeat(2, 1fr); }
      .form-grid { grid-template-columns: 1fr; }
      .form-full { grid-column: span 1; }
      .footer-grid { grid-template-columns: 1fr; }
      .banner-strip { grid-template-columns: 1fr; }
    }