:root {
      --primary-yellow: #FFC700;
      --primary-hover: #E5B200;
      --accent-gold: #FF9900;
      --bg-page: #FFFDF8;
      --bg-card: #FFFFFF;
      --bg-subtle: #FFF9E6;
      --bg-highlight: #FFF3CD;
      --text-main: #1C1A17;
      --text-secondary: #5A564C;
      --text-muted: #8A8578;
      --border-color: #EFE6CF;
      --border-strong: #E2CF88;
      --shadow-sm: 0 2px 8px rgba(180, 130, 0, 0.06);
      --shadow-md: 0 8px 24px rgba(180, 130, 0, 0.1);
      --shadow-lg: 0 16px 36px rgba(180, 130, 0, 0.14);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-width: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    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: 1.65;
      font-size: 15px;
      overflow-x: hidden;
      background-image: radial-gradient(#FFE885 0.75px, transparent 0.75px), radial-gradient(#FFE885 0.75px, var(--bg-page) 0.75px);
      background-size: 30px 30px;
      background-position: 0 0, 15px 15px;
    }
    a {
      color: var(--text-main);
      text-decoration: none;
      transition: all 0.25s ease;
    }
    a:hover {
      color: var(--accent-gold);
    }
    .container {
      width: 100%;
      max-width: var(--container-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 253, 248, 0.95);
      backdrop-filter: blur(12px);
      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-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .ai-page-logo {
      height: 42px;
      width: auto;
      display: block;
    }
    .brand-text {
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .brand-tag {
      background: var(--primary-yellow);
      color: #000;
      font-size: 11px;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 4px;
      margin-left: 6px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-secondary);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      display: inline-block;
    }
    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--text-main);
      background: var(--bg-subtle);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-nav-primary {
      background: var(--primary-yellow);
      color: #000;
      font-weight: 700;
      font-size: 14px;
      padding: 9px 20px;
      border-radius: 30px;
      box-shadow: 0 4px 12px rgba(255, 199, 0, 0.35);
      border: 1px solid rgba(0, 0, 0, 0.05);
    }
    .btn-nav-primary:hover {
      background: var(--primary-hover);
      color: #000;
      transform: translateY(-1px);
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }
    .mobile-menu-btn span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: 0.3s;
    }
    .hero-section {
      padding: 70px 0 60px;
      position: relative;
    }
    .hero-inner {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--bg-subtle);
      border: 1px solid var(--border-strong);
      padding: 6px 18px;
      border-radius: 30px;
      font-size: 13px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 24px;
    }
    .hero-badge .dot {
      width: 8px;
      height: 8px;
      background: var(--accent-gold);
      border-radius: 50%;
      box-shadow: 0 0 0 3px rgba(255, 153, 0, 0.2);
    }
    .hero-title {
      font-size: 40px;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-title span {
      background: linear-gradient(135deg, #E5A000 0%, #FF7700 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 17px;
      color: var(--text-secondary);
      max-width: 760px;
      margin: 0 auto 34px;
      line-height: 1.7;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 45px;
    }
    .btn-hero-main {
      background: #000000;
      color: #FFDE43 !important;
      font-weight: 800;
      font-size: 16px;
      padding: 14px 34px;
      border-radius: 40px;
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border: 2px solid #000;
    }
    .btn-hero-main:hover {
      background: #222;
      transform: translateY(-2px);
    }
    .btn-hero-sub {
      background: var(--bg-card);
      color: var(--text-main);
      font-weight: 700;
      font-size: 16px;
      padding: 14px 30px;
      border-radius: 40px;
      border: 1px solid var(--border-strong);
      box-shadow: var(--shadow-sm);
    }
    .btn-hero-sub:hover {
      background: var(--bg-subtle);
      border-color: var(--primary-yellow);
    }
    .hero-highlights {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      text-align: left;
    }
    .hero-stat-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-top: 4px solid var(--primary-yellow);
      padding: 18px 20px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }
    .stat-number {
      font-size: 24px;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .stat-text {
      font-size: 13px;
      color: var(--text-secondary);
      font-weight: 500;
    }
    .section-wrap {
      padding: 60px 0;
    }
    .section-head {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 40px;
    }
    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 800;
      text-transform: uppercase;
      color: var(--accent-gold);
      background: var(--bg-subtle);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 10px;
      border: 1px solid var(--border-color);
    }
    .section-title {
      font-size: 30px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .section-subtitle {
      font-size: 15px;
      color: var(--text-secondary);
    }
    .models-marquee-box {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .models-marquee-title {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-muted);
      margin-bottom: 16px;
      text-align: center;
    }
    .models-cloud {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }
    .model-chip {
      background: var(--bg-subtle);
      border: 1px solid var(--border-color);
      color: var(--text-main);
      font-size: 13px;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: 20px;
      transition: all 0.2s ease;
    }
    .model-chip:hover {
      background: var(--primary-yellow);
      transform: translateY(-2px);
      box-shadow: 0 4px 10px rgba(255, 199, 0, 0.25);
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-yellow);
    }
    .card-icon-badge {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--bg-subtle);
      border: 1px solid var(--border-strong);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 18px;
      color: #9A6F00;
      font-weight: 900;
    }
    .feature-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .feature-card p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.6;
      flex-grow: 1;
    }
    .media-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }
    .media-card:hover {
      box-shadow: var(--shadow-md);
      border-color: var(--border-strong);
    }
    .media-card-img-wrap {
      width: 100%;
      background: #F0EDE5;
      position: relative;
      overflow: hidden;
    }
    .media-card-img-wrap img {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    .media-card:hover .media-card-img-wrap img {
      transform: scale(1.02);
    }
    .media-card-body {
      padding: 22px;
    }
    .media-card-body h3 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .media-card-body p {
      font-size: 13.5px;
      color: var(--text-secondary);
      line-height: 1.6;
    }
    .gallery-banner-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }
    .gallery-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 12px;
      box-shadow: var(--shadow-sm);
    }
    .gallery-item .ai-page-image {
      border-radius: var(--radius-sm);
      width: 100%;
      display: block;
      object-fit: cover;
    }
    .gallery-item-info {
      padding: 12px 6px 4px;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-secondary);
    }
    .review-score-hero {
      background: linear-gradient(135deg, #FFF7D1 0%, #FFF0A8 100%);
      border: 2px solid var(--primary-yellow);
      border-radius: var(--radius-lg);
      padding: 36px;
      margin-bottom: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: var(--shadow-md);
    }
    .score-left {
      max-width: 650px;
    }
    .score-badge {
      display: inline-block;
      background: #000;
      color: #FFD43F;
      font-size: 12px;
      font-weight: 800;
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
    }
    .score-title {
      font-size: 26px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .score-desc {
      font-size: 14.5px;
      color: var(--text-secondary);
    }
    .score-right {
      text-align: center;
      background: var(--bg-card);
      border: 1px solid var(--border-strong);
      padding: 20px 32px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      min-width: 180px;
    }
    .score-num {
      font-size: 46px;
      font-weight: 900;
      color: #E58B00;
      line-height: 1;
    }
    .score-max {
      font-size: 14px;
      color: var(--text-muted);
      margin-top: 4px;
    }
    .score-stars {
      color: #FFA500;
      font-size: 18px;
      margin-top: 6px;
    }
    .table-wrap {
      overflow-x: auto;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .custom-table th,
    .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .custom-table th {
      background: var(--bg-subtle);
      font-weight: 700;
      color: var(--text-main);
    }
    .custom-table tr:last-child td {
      border-bottom: none;
    }
    .custom-table .highlight-col {
      background: rgba(255, 199, 0, 0.08);
      font-weight: 600;
    }
    .tag-yes {
      display: inline-flex;
      align-items: center;
      color: #2E7D32;
      font-weight: 700;
      background: #E8F5E9;
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 12px;
    }
    .tag-no {
      display: inline-flex;
      align-items: center;
      color: #C62828;
      font-weight: 600;
      background: #FFEBEE;
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 12px;
    }
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }
    .flow-step-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }
    .step-index {
      font-size: 32px;
      font-weight: 900;
      color: var(--primary-yellow);
      line-height: 1;
      margin-bottom: 12px;
      opacity: 0.9;
    }
    .flow-step-card h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .flow-step-card p {
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.6;
    }
    .review-card {
      background: var(--bg-card);
      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: 14px;
      color: var(--text-secondary);
      line-height: 1.65;
      margin-bottom: 18px;
      font-style: italic;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }
    .author-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--primary-yellow);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: #000;
      font-size: 15px;
    }
    .author-info h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-info span {
      font-size: 12px;
      color: var(--text-muted);
    }
    .faq-accordion {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      padding: 18px 22px;
      font-size: 15.5px;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
      background: #FFFFFF;
      transition: background 0.2s ease;
    }
    .faq-question:hover {
      background: var(--bg-subtle);
    }
    .faq-toggle-icon {
      font-size: 18px;
      font-weight: 700;
      color: var(--accent-gold);
      transition: transform 0.25s ease;
    }
    .faq-answer {
      display: none;
      padding: 0 22px 18px;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
      border-top: 1px dashed var(--border-color);
      background: #FFFFFF;
    }
    .faq-item.open .faq-answer {
      display: block;
      padding-top: 14px;
    }
    .faq-item.open .faq-toggle-icon {
      transform: rotate(45deg);
    }
    .article-list-box {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
    }
    .article-links-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
      margin-top: 16px;
    }
    .article-item-link {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 16px;
      background: var(--bg-subtle);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
    }
    .article-item-link:hover {
      background: var(--bg-highlight);
      border-color: var(--border-strong);
      transform: translateX(3px);
    }
    .contact-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 28px;
    }
    .form-box {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      font-size: 13.5px;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .form-input,
    .form-select,
    .form-textarea {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      background: #FFFFFF;
      color: var(--text-main);
      outline: none;
      transition: border-color 0.2s;
    }
    .form-input:focus,
    .form-select:focus,
    .form-textarea:focus {
      border-color: var(--accent-gold);
      box-shadow: 0 0 0 3px rgba(255, 199, 0, 0.2);
    }
    .form-textarea {
      height: 100px;
      resize: vertical;
    }
    .btn-submit {
      width: 100%;
      background: var(--primary-yellow);
      color: #000;
      font-weight: 800;
      font-size: 15px;
      padding: 13px;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(255, 199, 0, 0.35);
      transition: all 0.2s ease;
    }
    .btn-submit:hover {
      background: var(--primary-hover);
      transform: translateY(-1px);
    }
    .contact-info-panel {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .info-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      margin-bottom: 20px;
    }
    .info-item-icon {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: var(--bg-subtle);
      border: 1px solid var(--border-strong);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: #9A6F00;
      flex-shrink: 0;
    }
    .info-item-content h4 {
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 2px;
    }
    .info-item-content p {
      font-size: 13.5px;
      color: var(--text-secondary);
    }
    .qr-card {
      background: var(--bg-subtle);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 16px;
      display: flex;
      align-items: center;
      gap: 16px;
      margin-top: 10px;
    }
    .qr-card img {
      width: 84px;
      height: 84px;
      border-radius: 6px;
      border: 1px solid var(--border-color);
      background: #FFFFFF;
      display: block;
    }
    .qr-info h5 {
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 4px;
    }
    .qr-info p {
      font-size: 12px;
      color: var(--text-muted);
    }
    .site-footer {
      background: #FFFFFF;
      border-top: 1px solid var(--border-color);
      padding: 45px 0 25px;
      color: var(--text-secondary);
      font-size: 13.5px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 30px;
      margin-bottom: 35px;
    }
    .footer-brand h4 {
      font-size: 18px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .footer-col h5 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col ul li {
      margin-bottom: 8px;
    }
    .footer-col ul li a {
      color: var(--text-secondary);
      font-size: 13px;
    }
    .footer-col ul li a:hover {
      color: var(--accent-gold);
    }
    .friendly-links-wrap {
      border-top: 1px solid var(--border-color);
      padding: 20px 0;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
      font-size: 13px;
    }
    .friendly-links-wrap span {
      font-weight: 700;
      color: var(--text-main);
    }
    .friendly-links-wrap a {
      color: var(--text-secondary);
      background: var(--bg-subtle);
      padding: 3px 10px;
      border-radius: 4px;
      border: 1px solid var(--border-color);
    }
    .friendly-links-wrap a:hover {
      background: var(--primary-yellow);
      color: #000;
    }
    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
      text-align: center;
      font-size: 12.5px;
      color: var(--text-muted);
    }
    .float-dock {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-dock-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--bg-card);
      border: 1px solid var(--border-strong);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-main);
      font-size: 13px;
      font-weight: 800;
      cursor: pointer;
      transition: all 0.2s;
    }
    .float-dock-btn:hover {
      background: var(--primary-yellow);
      transform: scale(1.05);
    }
    .float-dock-btn.primary {
      background: var(--primary-yellow);
      border-color: #E5B200;
    }
    .float-qr-popup {
      position: absolute;
      right: 58px;
      bottom: 0;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 14px;
      box-shadow: var(--shadow-lg);
      display: none;
      width: 150px;
      text-align: center;
    }
    .float-qr-popup img {
      width: 120px;
      height: 120px;
      display: block;
      margin: 0 auto 6px;
    }
    .float-qr-popup p {
      font-size: 12px;
      font-weight: 700;
      color: var(--text-main);
    }
    .float-dock-group:hover .float-qr-popup {
      display: block;
    }
    @media (max-width: 992px) {
      .grid-3, .hero-highlights, .flow-steps, .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid, .contact-grid {
        grid-template-columns: 1fr;
      }
      .gallery-banner-grid {
        grid-template-columns: 1fr;
      }
      .review-score-hero {
        flex-direction: column;
        gap: 20px;
        text-align: center;
      }
      .score-left {
        max-width: 100%;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        border-bottom: 1px solid var(--border-color);
        padding: 14px 20px;
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
      }
      .mobile-menu-btn {
        display: block;
      }
    }
    @media (max-width: 640px) {
      .hero-title {
        font-size: 28px;
      }
      .section-title {
        font-size: 24px;
      }
      .grid-3, .grid-2, .hero-highlights, .flow-steps, .article-links-grid, .grid-4 {
        grid-template-columns: 1fr;
      }
      .hero-actions {
        flex-direction: column;
        width: 100%;
      }
      .btn-hero-main, .btn-hero-sub {
        width: 100%;
        justify-content: center;
      }
    }