/* 全局变量与高亮度鲜活色彩规范 */
    :root {
      --primary: #2563eb;
      --primary-hover: #1d4ed8;
      --primary-light: #eff6ff;
      --accent: #06b6d4;
      --accent-warm: #f97316;
      --success: #10b981;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --bg-alt: #f1f5f9;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --border-focus: #93c5fd;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.03);
      --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
      --shadow-lg: 0 10px 20px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --radius-full: 9999px;
      --max-width: 1200px;
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

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

    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-page);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

    /* 容器规范：全页统一步调 */
    .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, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-logo-wrap .ai-page-logo {
      height: 40px;
      width: auto;
      display: block;
      object-fit: contain;
    }
    .brand-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.02em;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 0.95rem;
      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-color: var(--primary-light);
    }
    .nav-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
      color: #ffffff;
      box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
      transform: translateY(-1px);
    }
    .btn-accent {
      background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(249, 115, 22, 0.25);
    }
    .btn-accent:hover {
      background: linear-gradient(135deg, #ea580c 0%, #c2410c 100%);
      color: #ffffff;
      transform: translateY(-1px);
    }
    .btn-outline {
      background-color: #ffffff;
      border-color: var(--border-color);
      color: var(--text-main);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: var(--primary-light);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--text-main);
      padding: 4px;
    }

    /* 通用 Section 样式 */
    section {
      padding: 70px 0;
      position: relative;
    }
    .section-light {
      background-color: #ffffff;
    }
    .section-alt {
      background-color: var(--bg-alt);
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px;
    }
    .section-badge {
      display: inline-block;
      padding: 4px 12px;
      font-size: 0.825rem;
      font-weight: 600;
      color: var(--primary);
      background-color: var(--primary-light);
      border-radius: var(--radius-full);
      margin-bottom: 12px;
      letter-spacing: 0.04em;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 14px;
      letter-spacing: -0.02em;
    }
    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 首屏 HERO 区域（严格无图片） */
    .hero-section {
      padding: 90px 0 70px;
      background: linear-gradient(180deg, #f0f7ff 0%, #f8fafc 100%);
      border-bottom: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }
    .hero-glow-1 {
      position: absolute;
      width: 450px;
      height: 450px;
      background: radial-gradient(circle, rgba(37,99,235,0.12) 0%, rgba(255,255,255,0) 70%);
      top: -100px;
      left: 10%;
      border-radius: 50%;
      pointer-events: none;
    }
    .hero-glow-2 {
      position: absolute;
      width: 500px;
      height: 500px;
      background: radial-gradient(circle, rgba(6,182,212,0.12) 0%, rgba(255,255,255,0) 70%);
      bottom: -100px;
      right: 10%;
      border-radius: 50%;
      pointer-events: none;
    }
    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
      position: relative;
      z-index: 2;
    }
    .hero-badge-live {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background-color: #ffffff;
      border: 1px solid #bfdbfe;
      padding: 6px 16px;
      border-radius: var(--radius-full);
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 24px;
      box-shadow: var(--shadow-sm);
    }
    .hero-badge-live .pulse-dot {
      width: 8px;
      height: 8px;
      background-color: var(--success);
      border-radius: 50%;
      box-shadow: 0 0 0 rgba(16,185,129, 0.4);
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0% { box-shadow: 0 0 0 0 rgba(16,185,129, 0.6); }
      70% { box-shadow: 0 0 0 10px rgba(16,185,129, 0); }
      100% { box-shadow: 0 0 0 0 rgba(16,185,129, 0); }
    }
    .hero-title {
      font-size: 2.85rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.03em;
    }
    .hero-title-gradient {
      background: linear-gradient(135deg, #1e40af 0%, #2563eb 50%, #06b6d4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.2rem;
      color: var(--text-muted);
      margin-bottom: 36px;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }
    .hero-actions .btn {
      padding: 14px 32px;
      font-size: 1.05rem;
    }
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 20px;
    }
    .stat-card {
      background-color: #ffffff;
      padding: 22px 18px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: var(--transition);
    }
    .stat-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-focus);
    }
    .stat-number {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 6px;
    }
    .stat-label {
      font-size: 0.875rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 多模型聚合标签栏 */
    .model-tags-bar {
      margin-top: 40px;
      padding: 20px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }
    .model-tags-title {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-muted);
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      text-align: center;
    }
    .model-tags-flex {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      justify-content: center;
    }
    .model-tag {
      font-size: 0.825rem;
      padding: 5px 12px;
      background: var(--bg-alt);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-full);
      color: var(--text-main);
      font-weight: 500;
      transition: var(--transition);
    }
    .model-tag:hover {
      background: var(--primary-light);
      color: var(--primary);
      border-color: var(--border-focus);
    }

    /* 网格卡片系统 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    /* 业务/场景卡片 */
    .feature-card {
      background: #ffffff;
      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;
      justify-content: space-between;
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: #cbd5e1;
    }
    .feature-icon-box {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.35rem;
      margin-bottom: 18px;
      font-weight: 700;
    }
    .feature-title {
      font-size: 1.18rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .feature-desc {
      font-size: 0.93rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .feature-tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }
    .feature-subtag {
      font-size: 0.75rem;
      padding: 2px 8px;
      background-color: var(--bg-alt);
      color: var(--text-light);
      border-radius: 4px;
    }

    /* 平台介绍大板块 */
    .platform-intro-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
      margin-bottom: 40px;
    }
    .intro-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .intro-text h3 {
      font-size: 1.7rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .intro-text p {
      font-size: 1rem;
      color: var(--text-muted);
      margin-bottom: 16px;
      line-height: 1.7;
    }
    .intro-highlights {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 24px;
    }
    .highlight-item {
      background: var(--bg-page);
      border: 1px solid var(--border-color);
      padding: 14px 18px;
      border-radius: var(--radius-sm);
    }
    .highlight-item strong {
      display: block;
      color: var(--primary);
      font-size: 1.05rem;
      margin-bottom: 4px;
    }
    .highlight-item span {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 流程步骤 */
    .step-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .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-badge {
      display: inline-block;
      width: 32px;
      height: 32px;
      line-height: 32px;
      background: var(--primary);
      color: #ffffff;
      border-radius: 50%;
      text-align: center;
      font-weight: 800;
      font-size: 0.9rem;
      margin-bottom: 14px;
    }
    .step-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .step-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 对比评测表格与卡片 */
    .eval-highlight-banner {
      background: linear-gradient(135deg, #eff6ff 0%, #e0f2fe 100%);
      border: 1px solid #bfdbfe;
      border-radius: var(--radius-md);
      padding: 24px 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 30px;
    }
    .eval-score-wrap {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .eval-score-num {
      font-size: 3rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }
    .eval-stars {
      color: #eab308;
      font-size: 1.4rem;
      letter-spacing: 2px;
    }
    .eval-score-meta {
      font-size: 0.95rem;
      color: var(--text-muted);
    }
    .table-container {
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }
    .custom-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }
    .custom-table tr:last-child td {
      border-bottom: none;
    }
    .badge-win {
      color: var(--success);
      font-weight: 700;
    }
    .badge-normal {
      color: var(--text-light);
    }

    /* 案例图片展示容器 */
    .case-gallery {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 24px;
      align-items: center;
      margin-top: 30px;
    }
    .case-image-wrapper {
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .case-image-wrapper img {
      width: 100%;
      height: auto;
      display: block;
      border-radius: var(--radius-sm);
      object-fit: cover;
    }
    .case-info-box {
      background: #ffffff;
      padding: 30px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }
    .case-info-box h4 {
      font-size: 1.4rem;
      font-weight: 800;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    /* 用户评论 */
    .review-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-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .review-avatar-char {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
    }
    .review-user-info h5 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .review-user-info span {
      font-size: 0.8rem;
      color: var(--text-light);
    }
    .review-stars {
      color: #eab308;
      font-size: 0.9rem;
      margin-bottom: 10px;
    }
    .review-text {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* FAQ 折叠手风琴 */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .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: 1.02rem;
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }
    .faq-icon {
      font-size: 1.25rem;
      color: var(--text-light);
      transition: transform 0.25s ease;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #fafbfc;
      border-top: 1px solid transparent;
    }
    .faq-answer-inner {
      padding: 16px 22px;
      font-size: 0.93rem;
      color: var(--text-muted);
      line-height: 1.65;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--primary);
    }
    .faq-item.active .faq-answer {
      max-height: 250px;
      border-top-color: var(--border-color);
    }

    /* 表单区域 */
    .contact-form-wrap {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }
    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-bottom: 20px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .form-group.full {
      grid-column: span 2;
    }
    .form-label {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.95rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      background: #fdfdfd;
      color: var(--text-main);
      transition: var(--transition);
      outline: none;
    }
    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }

    /* 联系渠道卡片与二维码 */
    .contact-channel-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .contact-qr-img {
      width: 140px;
      height: 140px;
      border-radius: var(--radius-sm);
      margin: 14px 0;
      border: 1px solid var(--border-color);
      object-fit: cover;
    }

    /* 文章列表组件 */
    .article-links-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .article-links-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
      margin-top: 14px;
    }
    .article-link-item {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 10px 14px;
      background: var(--bg-alt);
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      color: var(--text-main);
    }
    .article-link-item:hover {
      background: var(--primary-light);
      color: var(--primary);
    }

    /* 友情链接与页脚 */
    .friend-links-wrap {
      padding: 30px 0;
      border-top: 1px solid var(--border-color);
      background: #ffffff;
    }
    .friend-links-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }
    .friend-links-list a {
      font-size: 0.88rem;
      color: var(--text-muted);
      background: var(--bg-alt);
      padding: 4px 12px;
      border-radius: 4px;
    }
    .friend-links-list a:hover {
      color: var(--primary);
      background: var(--primary-light);
    }

    .site-footer {
      background-color: #0f172a;
      color: #cbd5e1;
      padding: 50px 0 30px;
      border-top: 1px solid #1e293b;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 40px;
    }
    .footer-col h5 {
      color: #ffffff;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-col ul a {
      color: #94a3b8;
      font-size: 0.9rem;
    }
    .footer-col ul a:hover {
      color: #ffffff;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 浮动客服挂件 */
    .floating-kefu {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .floating-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      box-shadow: 0 4px 12px rgba(0,0,0,0.15);
      cursor: pointer;
      transition: var(--transition);
      border: none;
    }
    .floating-btn:hover {
      transform: scale(1.08);
      background: var(--primary-hover);
    }

    /* 响应式媒体查询 */
    @media (max-width: 992px) {
      .hero-title { font-size: 2.2rem; }
      .grid-3 { grid-template-columns: repeat(2, 1fr); }
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .step-grid { grid-template-columns: repeat(2, 1fr); }
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .review-grid { grid-template-columns: repeat(2, 1fr); }
      .intro-grid { grid-template-columns: 1fr; }
      .case-gallery { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .menu-toggle { display: block; }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 16px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.show { display: flex; }
      .nav-links li a { width: 100%; padding: 12px 16px; }
      .nav-action .btn-primary { display: none; }
      .hero-title { font-size: 1.8rem; }
      .grid-3, .grid-4, .grid-2, .step-grid, .hero-stats-grid, .review-grid, .form-grid, .article-links-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full { grid-column: span 1; }
      .eval-highlight-banner { flex-direction: column; text-align: center; gap: 16px; }
      .footer-grid { grid-template-columns: 1fr; }
      .contact-form-wrap { padding: 24px; }
    }