:root {
      --primary: #4361ee;
      --primary-dark: #3a0ca3;
      --secondary: #7209b7;
      --accent-pink: #f72585;
      --accent-cyan: #4cc9f0;
      --accent-yellow: #f8961e;
      --accent-green: #4ade80;
      --bg-base: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-sub: #334155;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --rainbow-gradient: linear-gradient(135deg, #4361ee 0%, #7209b7 30%, #f72585 70%, #f8961e 100%);
      --soft-rainbow: linear-gradient(120deg, rgba(67, 97, 238, 0.08) 0%, rgba(114, 9, 183, 0.08) 35%, rgba(247, 37, 133, 0.08) 70%, rgba(76, 201, 240, 0.08) 100%);
      --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.07);
      --shadow-lg: 0 16px 36px rgba(15, 23, 42, 0.1);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-pill: 9999px;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
    }

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

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

    body {
      font-family: var(--font-stack);
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

    ul, ol {
      list-style: none;
    }

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    .section {
      padding: 80px 0;
      position: relative;
    }

    .section-alt {
      background: #f1f5f9;
      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 50px auto;
    }

    .section-tag {
      display: inline-block;
      padding: 6px 16px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary-dark);
      background: rgba(67, 97, 238, 0.1);
      border-radius: var(--radius-pill);
      margin-bottom: 12px;
      border: 1px solid rgba(67, 97, 238, 0.2);
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      margin-bottom: 16px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 顶部彩虹装饰线 */
    .rainbow-line {
      height: 4px;
      width: 100%;
      background: var(--rainbow-gradient);
    }

    /* Header & Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    }

    .nav-wrapper {
      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: 38px;
      width: auto;
    }

    .brand-name-box {
      display: flex;
      flex-direction: column;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.2;
    }

    .brand-sub {
      font-size: 0.72rem;
      color: var(--text-muted);
      letter-spacing: 0.5px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }

    .nav-item {
      padding: 8px 14px;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-sub);
      border-radius: var(--radius-sm);
      transition: color 0.2s ease, background 0.2s ease;
    }

    .nav-item:hover, .nav-item.active {
      color: var(--primary);
      background: rgba(67, 97, 238, 0.05);
    }

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

    .btn-login {
      padding: 8px 18px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--primary);
      border: 1px solid var(--primary);
      border-radius: var(--radius-pill);
      background: #ffffff;
      transition: all 0.25s ease;
    }

    .btn-login:hover {
      background: var(--primary);
      color: #ffffff;
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
      color: var(--text-main);
    }

    /* 按钮样式规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      font-size: 0.98rem;
      font-weight: 700;
      border-radius: var(--radius-pill);
      cursor: pointer;
      transition: all 0.25s cubic-bezier(0.165, 0.84, 0.44, 1);
      border: none;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    }

    .btn-rainbow {
      background: var(--rainbow-gradient);
      color: #ffffff !important;
      background-size: 200% auto;
    }

    .btn-rainbow:hover {
      background-position: right center;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(114, 9, 183, 0.25);
    }

    .btn-outline {
      background: #ffffff;
      color: var(--text-main);
      border: 2px solid var(--border-color);
    }

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

    /* 1. 首屏 HERO 区域 (严禁任何图片) */
    .hero-section {
      padding: 70px 0 90px 0;
      background: radial-gradient(circle at 80% 20%, rgba(247, 37, 133, 0.06), transparent 40%),
                  radial-gradient(circle at 10% 80%, rgba(76, 201, 240, 0.08), transparent 45%),
                  var(--soft-rainbow);
      border-bottom: 1px solid var(--border-color);
      position: relative;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }

    .hero-h1 {
      font-size: 2.7rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .text-gradient {
      background: var(--rainbow-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.12rem;
      color: var(--text-sub);
      line-height: 1.7;
      margin-bottom: 32px;
    }

    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 32px;
    }

    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .hero-tag-item {
      font-size: 0.82rem;
      font-weight: 600;
      padding: 4px 12px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-pill);
      color: var(--text-sub);
    }

    /* Hero 右侧数据可视化面板 (纯CSS/无图) */
    .hero-viz-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-lg);
      border: 1px solid rgba(226, 232, 240, 0.8);
      position: relative;
    }

    .hero-card-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 24px;
      padding-bottom: 16px;
      border-bottom: 1px solid var(--border-color);
    }

    .card-badge {
      font-size: 0.78rem;
      font-weight: 700;
      padding: 4px 10px;
      background: #dcfce7;
      color: #166534;
      border-radius: var(--radius-pill);
    }

    .hero-card-stats {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
      margin-bottom: 24px;
    }

    .stat-box {
      background: #f8fafc;
      padding: 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }

    .stat-box-val {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--primary-dark);
      line-height: 1.2;
    }

    .stat-box-label {
      font-size: 0.82rem;
      color: var(--text-muted);
      margin-top: 4px;
    }

    .hero-runtime-bar {
      margin-top: 14px;
    }

    .bar-label-group {
      display: flex;
      justify-content: space-between;
      font-size: 0.82rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-sub);
    }

    .rainbow-progress {
      height: 8px;
      width: 100%;
      background: #e2e8f0;
      border-radius: var(--radius-pill);
      overflow: hidden;
    }

    .rainbow-progress-inner {
      height: 100%;
      width: 99.8%;
      background: var(--rainbow-gradient);
      border-radius: var(--radius-pill);
    }

    /* 2. 支持AI模型矩阵标签云 */
    .model-pills-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      justify-content: center;
      margin-top: 24px;
    }

    .model-pill {
      font-size: 0.84rem;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: var(--radius-pill);
      background: #ffffff;
      border: 1px solid var(--border-color);
      color: var(--text-sub);
      box-shadow: var(--shadow-sm);
      transition: all 0.2s ease;
    }

    .model-pill:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }

    /* 3. 服务能力网格 (16+精选业务场景卡片) */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 24px;
    }

    .service-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
      display: flex;
      flex-direction: column;
      position: relative;
      overflow: hidden;
    }

    .service-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--rainbow-gradient);
      opacity: 0;
      transition: opacity 0.3s ease;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(67, 97, 238, 0.3);
    }

    .service-card:hover::before {
      opacity: 1;
    }

    .service-icon-box {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: rgba(67, 97, 238, 0.08);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      margin-bottom: 16px;
    }

    .service-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .service-text {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 4. 标准生产流程步骤 (时间线) */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 40px;
      position: relative;
    }

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

    .step-number {
      font-size: 1.8rem;
      font-weight: 900;
      background: var(--rainbow-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 12px;
    }

    .step-name {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 5. 权威对比评测卡片与表格 */
    .eval-highlight-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      margin-bottom: 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }

    .eval-score-wrap {
      display: flex;
      align-items: baseline;
      gap: 12px;
    }

    .eval-big-score {
      font-size: 4rem;
      font-weight: 900;
      color: var(--accent-pink);
      line-height: 1;
    }

    .eval-stars {
      color: #f59e0b;
      font-size: 1.5rem;
      margin-bottom: 6px;
    }

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

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 720px;
    }

    .eval-table th, .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.92rem;
    }

    .eval-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }

    .eval-table tr:hover {
      background: #fafafa;
    }

    .eval-cell-good {
      color: #059669;
      font-weight: 700;
    }

    .eval-cell-bad {
      color: #94a3b8;
    }

    /* 6. 案例中心图文展示 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 28px;
    }

    .case-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

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

    .case-img-box {
      width: 100%;
      height: 220px;
      background: #e2e8f0;
      overflow: hidden;
    }

    .case-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .case-card:hover .case-img-box img {
      transform: scale(1.04);
    }

    .case-content {
      padding: 20px;
    }

    .case-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .case-meta {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 7. 用户真实评价卡片 (6条) */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 0.92rem;
      color: var(--text-sub);
      line-height: 1.65;
      margin-bottom: 18px;
      position: relative;
    }

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

    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--rainbow-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.9rem;
    }

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

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

    /* 8. FAQ 手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.2s ease;
    }

    .faq-item.active {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }

    .faq-question {
      padding: 18px 24px;
      font-size: 1.02rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }

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

    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }

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

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 16px 24px 22px 24px;
      border-top: 1px solid var(--border-color);
    }

    /* 9. 表单与联系模块 */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: start;
    }

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

    .contact-list {
      margin: 24px 0;
    }

    .contact-item-row {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 18px;
      font-size: 0.95rem;
      color: var(--text-sub);
    }

    .contact-icon-circle {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: rgba(67, 97, 238, 0.08);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }

    .qrcode-box {
      margin-top: 24px;
      padding-top: 20px;
      border-top: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .qrcode-box img {
      width: 110px;
      height: 110px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      padding: 4px;
      background: #ffffff;
    }

    .qrcode-text h4 {
      font-size: 1rem;
      color: var(--text-main);
      margin-bottom: 4px;
    }

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

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

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

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

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.95rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      outline: none;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
      background: #ffffff;
      color: var(--text-main);
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.15);
    }

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

    /* 10. 资讯与文章列表 */
    .article-wrap {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

    .article-links-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 16px;
      margin-top: 16px;
    }

    .article-link-item {
      padding: 12px 16px;
      background: #f8fafc;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      font-size: 0.9rem;
      color: var(--text-sub);
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: all 0.2s ease;
    }

    .article-link-item:hover {
      background: #ffffff;
      border-color: var(--primary);
      color: var(--primary);
      transform: translateX(4px);
    }

    /* 11. Footer 全局居中统一 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 30px 0;
      color: var(--text-sub);
      font-size: 0.9rem;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 1.5fr repeat(3, 1fr);
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-col-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .footer-col-links li {
      margin-bottom: 10px;
    }

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

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

    .friend-links-box {
      padding-top: 24px;
      border-top: 1px solid var(--border-color);
      margin-bottom: 24px;
    }

    .friend-links-box h5 {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 12px;
    }

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

    .friend-links-items a {
      color: var(--text-sub);
      font-size: 0.85rem;
      padding: 4px 10px;
      background: #f1f5f9;
      border-radius: 4px;
    }

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

    .footer-bottom {
      text-align: center;
      padding-top: 24px;
      border-top: 1px solid var(--border-color);
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* 浮动客服挂件 */
    .floating-kefu {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--border-color);
      cursor: pointer;
      color: var(--primary);
      position: relative;
      transition: all 0.25s ease;
    }

    .float-btn:hover {
      transform: scale(1.08);
      background: var(--primary);
      color: #ffffff;
    }

    .kefu-popover {
      display: none;
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #ffffff;
      padding: 16px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
      width: 180px;
      text-align: center;
    }

    .float-btn:hover .kefu-popover {
      display: block;
    }

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .flow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-grid {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px 24px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-item {
        width: 100%;
        padding: 12px 0;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-h1 {
        font-size: 2.1rem;
      }
      .flow-steps {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
    }