:root {
      --primary-cyan: #0fa997;
      --primary-gradient: linear-gradient(135deg, #0fa997 0%, #0c8274 50%, #075985 100%);
      --accent-teal: #14b8a6;
      --accent-glow: rgba(20, 184, 166, 0.12);
      --bg-light: #f7fafb;
      --bg-white: #ffffff;
      --card-bg: #ffffff;
      --card-border: #e2e8f0;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --shadow-sm: 0 2px 6px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.06);
      --shadow-lg: 0 16px 36px rgba(15, 23, 42, 0.08);
      --container-width: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.25s ease;
    }
    a:hover {
      color: var(--primary-cyan);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: var(--container-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    header.site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--card-border);
      transition: all 0.3s ease;
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }
    .brand-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }
    .nav-links li a {
      font-size: 0.925rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      transition: all 0.2s ease;
    }
    .nav-links li a:hover {
      color: var(--primary-cyan);
      background: rgba(15, 169, 151, 0.08);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-portal {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.925rem;
      font-weight: 600;
      color: #ffffff !important;
      background: var(--primary-gradient);
      border-radius: 9999px;
      box-shadow: 0 4px 14px rgba(15, 169, 151, 0.3);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      white-space: nowrap;
    }
    .btn-portal:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(15, 169, 151, 0.4);
    }
    .menu-toggle {
      display: none;
      background: transparent;
      border: none;
      cursor: pointer;
      padding: 6px;
    }
    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--text-main);
      margin: 5px 0;
      transition: 0.3s;
    }

    .hero-section {
      position: relative;
      padding: 90px 0 70px 0;
      background: radial-gradient(circle at 80% 20%, rgba(20, 184, 166, 0.12) 0%, rgba(247, 250, 251, 0) 60%),
                  radial-gradient(circle at 10% 80%, rgba(7, 89, 133, 0.08) 0%, rgba(247, 250, 251, 0) 50%),
                  linear-gradient(180deg, #f0fdfa 0%, #f7fafb 100%);
      border-bottom: 1px solid var(--card-border);
      overflow: hidden;
    }
    .hero-content {
      text-align: center;
      max-width: 880px;
      margin: 0 auto;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: rgba(15, 169, 151, 0.1);
      border: 1px solid rgba(15, 169, 151, 0.25);
      border-radius: 9999px;
      color: #0d9488;
      font-size: 0.875rem;
      font-weight: 600;
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-title .highlight {
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 36px;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }
    .btn-hero-primary {
      padding: 14px 34px;
      font-size: 1.05rem;
      font-weight: 700;
      color: #ffffff !important;
      background: var(--primary-gradient);
      border-radius: 10px;
      box-shadow: 0 8px 24px rgba(15, 169, 151, 0.35);
      transition: all 0.25s ease;
    }
    .btn-hero-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 30px rgba(15, 169, 151, 0.45);
    }
    .btn-hero-outline {
      padding: 14px 30px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: 10px;
      transition: all 0.25s ease;
    }
    .btn-hero-outline:hover {
      border-color: var(--accent-teal);
      color: var(--primary-cyan);
      box-shadow: var(--shadow-sm);
    }
    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
    }
    .metric-card {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-sm);
      text-align: center;
    }
    .metric-value {
      font-size: 1.85rem;
      font-weight: 800;
      color: #0f766e;
      margin-bottom: 4px;
    }
    .metric-label {
      font-size: 0.875rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    section {
      padding: 84px 0;
      border-bottom: 1px solid var(--card-border);
    }
    .section-header {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 56px auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      color: #0f766e;
      letter-spacing: 1px;
      margin-bottom: 10px;
      background: rgba(15, 169, 151, 0.1);
      padding: 4px 12px;
      border-radius: 20px;
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.35;
    }
    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .about-text h3 {
      font-size: 1.7rem;
      font-weight: 700;
      margin-bottom: 18px;
      color: var(--text-main);
    }
    .about-text p {
      font-size: 1rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.75;
    }
    .about-feature-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-top: 24px;
    }
    .about-feature-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 600;
      font-size: 0.95rem;
      color: var(--text-main);
    }
    .about-feature-item svg {
      flex-shrink: 0;
      color: var(--primary-cyan);
    }
    .about-banner-wrap {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--card-border);
      box-shadow: var(--shadow-md);
      background: #ffffff;
      display: flex;
      flex-direction: column;
      gap: 12px;
      padding: 12px;
    }

    .engine-tags-cloud {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-sm);
      margin-bottom: 48px;
    }
    .tags-container {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 20px;
    }
    .engine-badge {
      background: #f0fdfa;
      border: 1px solid rgba(15, 169, 151, 0.2);
      color: #0f766e;
      padding: 7px 16px;
      border-radius: 9999px;
      font-size: 0.9rem;
      font-weight: 600;
      transition: all 0.2s ease;
    }
    .engine-badge:hover {
      background: var(--primary-cyan);
      color: #ffffff;
      border-color: var(--primary-cyan);
      transform: translateY(-2px);
    }

    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 30px;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      display: flex;
      flex-direction: column;
    }
    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(15, 169, 151, 0.4);
    }
    .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: #e6fffa;
      color: #0d9488;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
    }
    .service-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .service-card p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .service-link {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--primary-cyan);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .scenario-card {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .scenario-card h4 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .scenario-card h4::before {
      content: "";
      display: inline-block;
      width: 8px;
      height: 8px;
      background: var(--primary-cyan);
      border-radius: 50%;
    }
    .scenario-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    .network-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .network-node {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: center;
    }
    .network-city {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .network-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .process-step {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }
    .step-number {
      font-size: 2rem;
      font-weight: 800;
      color: rgba(15, 169, 151, 0.25);
      line-height: 1;
      margin-bottom: 12px;
    }
    .process-step h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .process-step p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .case-card {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .case-img-wrap {
      background: #e2e8f0;
      aspect-ratio: 16 / 9;
      overflow: hidden;
    }
    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .case-card:hover .case-img-wrap img {
      transform: scale(1.05);
    }
    .case-info {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .case-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: #0f766e;
      background: #f0fdfa;
      padding: 4px 10px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 12px;
      align-self: flex-start;
    }
    .case-info h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .case-info p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    .table-container {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-lg);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }
    .eval-table th, .eval-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--card-border);
      font-size: 0.95rem;
    }
    .eval-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }
    .eval-highlight {
      background: rgba(15, 169, 151, 0.04);
      color: #0f766e;
      font-weight: 600;
    }
    .eval-score-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 10px;
      background: #f0fdfa;
      border: 1px solid #14b8a6;
      border-radius: 6px;
      color: #0d9488;
      font-weight: 800;
    }

    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-text {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 20px;
      position: relative;
    }
    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px dashed var(--card-border);
      padding-top: 16px;
    }
    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #ccfbf1;
      color: #0f766e;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }
    .reviewer-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .reviewer-role {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    .faq-accordion {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.2s ease;
    }
    .faq-question {
      width: 100%;
      padding: 20px 24px;
      text-align: left;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      background: none;
      border: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-question svg {
      transition: transform 0.3s ease;
      color: var(--primary-cyan);
    }
    .faq-item.active .faq-question svg {
      transform: rotate(180deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background: #fcfdfe;
    }
    .faq-answer-inner {
      padding: 0 24px 22px 24px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-lg);
      padding: 48px;
      box-shadow: var(--shadow-sm);
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      font-family: inherit;
      color: var(--text-main);
      background: #fafafa;
      transition: all 0.2s ease;
    }
    .form-control:focus {
      outline: none;
      border-color: var(--primary-cyan);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(15, 169, 151, 0.15);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 120px;
    }
    .btn-submit {
      width: 100%;
      padding: 14px;
      font-size: 1rem;
      font-weight: 700;
      color: #ffffff;
      background: var(--primary-gradient);
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(15, 169, 151, 0.3);
      transition: all 0.25s ease;
    }
    .btn-submit:hover {
      box-shadow: 0 6px 20px rgba(15, 169, 151, 0.4);
    }
    .contact-info-panel h3 {
      font-size: 1.45rem;
      font-weight: 700;
      margin-bottom: 18px;
      color: var(--text-main);
    }
    .contact-details {
      list-style: none;
      margin-bottom: 28px;
    }
    .contact-details li {
      margin-bottom: 12px;
      font-size: 0.95rem;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .qr-container {
      display: inline-block;
      padding: 12px;
      background: #f8fafc;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      text-align: center;
    }
    .qr-container img {
      width: 130px;
      height: 130px;
      object-fit: cover;
      margin-bottom: 8px;
      border-radius: 4px;
    }
    .qr-container span {
      display: block;
      font-size: 0.8rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-bottom: 30px;
    }
    .article-card {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .article-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
      line-height: 1.45;
    }
    .article-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .article-link {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary-cyan);
    }
    .article-dynamic-links {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 20px 24px;
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }
    .article-dynamic-links span {
      font-weight: 700;
      font-size: 0.9rem;
      color: var(--text-main);
    }
    .article-dynamic-links a {
      font-size: 0.875rem;
      color: #0d9488;
      background: #f0fdfa;
      padding: 4px 10px;
      border-radius: 4px;
    }

    footer.site-footer {
      background: #ffffff;
      border-top: 1px solid var(--card-border);
      padding: 48px 0 32px 0;
      color: var(--text-muted);
    }
    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand p {
      font-size: 0.9rem;
      margin-top: 14px;
      line-height: 1.65;
      color: var(--text-muted);
      max-width: 320px;
    }
    .footer-col h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col ul li {
      margin-bottom: 10px;
    }
    .footer-col ul li a {
      font-size: 0.875rem;
      color: var(--text-muted);
    }
    .footer-col ul li a:hover {
      color: var(--primary-cyan);
    }
    .friend-links-box {
      border-top: 1px solid var(--card-border);
      padding-top: 24px;
      margin-bottom: 24px;
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
    }
    .friend-links-box span {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .friend-links-box a {
      font-size: 0.85rem;
      color: var(--text-light);
    }
    .friend-links-box a:hover {
      color: var(--primary-cyan);
    }
    .footer-bottom {
      border-top: 1px solid var(--card-border);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.85rem;
      color: var(--text-light);
    }

    .float-widget {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--card-border);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-cyan);
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .float-btn:hover {
      background: var(--primary-cyan);
      color: #ffffff;
      transform: translateY(-2px);
    }

    @media (max-width: 1024px) {
      .services-grid, .scenarios-grid, .cases-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .network-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-metrics {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top {
        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: 20px;
        border-bottom: 1px solid var(--card-border);
        box-shadow: var(--shadow-md);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li {
        width: 100%;
        text-align: center;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
      }
      .hero-title {
        font-size: 2rem;
      }
      .about-grid, .contact-wrapper {
        grid-template-columns: 1fr;
      }
      .services-grid, .scenarios-grid, .cases-grid, .reviews-grid, .articles-grid {
        grid-template-columns: 1fr;
      }
      .process-timeline, .network-grid {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }