:root {
      --primary: #2563eb;
      --primary-accent: #ff007a;
      --secondary-accent: #00d2ff;
      --dark-text: #1e293b;
      --muted-text: #64748b;
      --bg-base: #f8fafc;
      --card-bg: #ffffff;
      --border-color: #e2e8f0;
      --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.05);
      --shadow-lg: 0 16px 32px rgba(37, 99, 235, 0.12);
      --radius: 12px;
      --container-width: 1200px;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      -webkit-tap-highlight-color: transparent;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-base);
      color: var(--dark-text);
      line-height: 1.6;
      overflow-x: hidden;
      scroll-behavior: smooth;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    .container {
      width: 100%;
      max-width: var(--container-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    header.site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-box .ai-page-logo {
      height: 40px;
      width: auto;
      display: block;
    }
    .brand-name {
      font-size: 20px;
      font-weight: 800;
      color: var(--dark-text);
      letter-spacing: -0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      padding: 8px 14px;
      font-weight: 500;
      font-size: 15px;
      color: var(--dark-text);
      transition: color 0.25s ease;
    }
    .nav-links li a:hover {
      color: var(--primary);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: 30px;
      font-weight: 600;
      font-size: 15px;
      cursor: pointer;
      transition: all 0.25s ease;
      border: 1px solid transparent;
      text-align: center;
    }
    .btn-gradient {
      background: linear-gradient(135deg, #ff007a 0%, #7928ca 50%, #00d2ff 100%);
      color: #ffffff;
      box-shadow: 0 4px 15px rgba(255, 0, 122, 0.35);
    }
    .btn-gradient:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 0, 122, 0.45);
      color: #ffffff;
    }
    .btn-outline {
      background: #ffffff;
      border-color: #cbd5e1;
      color: var(--dark-text);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--dark-text);
      cursor: pointer;
    }
    .hero-section {
      padding: 80px 0 60px;
      position: relative;
      background: linear-gradient(180deg, #f0f4ff 0%, #faf5ff 50%, var(--bg-base) 100%);
      border-bottom: 1px solid var(--border-color);
    }
    .hero-content {
      text-align: center;
      max-width: 860px;
      margin: 0 auto;
    }
    .hero-badge {
      display: inline-block;
      padding: 6px 16px;
      background: rgba(255, 0, 122, 0.08);
      color: #ff007a;
      border: 1px solid rgba(255, 0, 122, 0.2);
      border-radius: 20px;
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 40px;
      font-weight: 900;
      line-height: 1.25;
      color: #0f172a;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-subtitle {
      font-size: 18px;
      color: var(--muted-text);
      line-height: 1.6;
      margin-bottom: 36px;
    }
    .hero-btns {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
    }
    .metric-card {
      background: var(--card-bg);
      padding: 24px;
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
      text-align: center;
      border-top: 4px solid var(--primary);
    }
    .metric-value {
      font-size: 32px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 4px;
    }
    .metric-desc {
      font-size: 14px;
      color: var(--muted-text);
    }
    .section-block {
      padding: 80px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .section-header {
      text-align: center;
      max-width: 700px;
      margin: 0 auto 50px;
    }
    .section-subtitle {
      color: #ff007a;
      font-size: 14px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 8px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: #0f172a;
      line-height: 1.3;
    }
    .section-desc {
      margin-top: 12px;
      color: var(--muted-text);
      font-size: 16px;
    }
    .platform-intro-card {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      padding: 40px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .intro-text-block h3 {
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 16px;
      color: #0f172a;
    }
    .intro-text-block p {
      color: var(--muted-text);
      margin-bottom: 16px;
      line-height: 1.7;
    }
    .intro-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 20px;
    }
    .tag-badge {
      padding: 4px 12px;
      background: #f1f5f9;
      border-radius: 6px;
      font-size: 12px;
      font-weight: 600;
      color: var(--dark-text);
    }
    .intro-features-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .feature-item-mini {
      background: #f8fafc;
      padding: 16px;
      border-radius: 8px;
      border-left: 3px solid #ff007a;
    }
    .feature-item-mini h4 {
      font-size: 15px;
      color: #0f172a;
      margin-bottom: 4px;
    }
    .feature-item-mini p {
      font-size: 13px;
      color: var(--muted-text);
      margin-bottom: 0;
    }
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: var(--card-bg);
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      padding: 30px;
      transition: all 0.3s ease;
      position: relative;
    }
    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: #cbd5e1;
    }
    .service-card-tag {
      display: inline-block;
      padding: 4px 10px;
      font-size: 11px;
      font-weight: 700;
      border-radius: 4px;
      background: #eff6ff;
      color: var(--primary);
      margin-bottom: 16px;
    }
    .service-card h3 {
      font-size: 20px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 12px;
    }
    .service-card p {
      color: var(--muted-text);
      font-size: 14px;
      line-height: 1.6;
    }
    .model-tags-container {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 30px;
    }
    .model-chip {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 8px 16px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      color: #334155;
      box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    }
    .steps-wrapper {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: var(--card-bg);
      padding: 24px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      position: relative;
    }
    .step-number {
      font-size: 32px;
      font-weight: 900;
      color: #e2e8f0;
      margin-bottom: 12px;
    }
    .step-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
      color: #0f172a;
    }
    .step-card p {
      font-size: 13px;
      color: var(--muted-text);
    }
    .review-score-box {
      background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
      color: #ffffff;
      border-radius: var(--radius);
      padding: 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 40px;
      flex-wrap: wrap;
      gap: 20px;
    }
    .score-left h3 {
      font-size: 26px;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .score-left p {
      color: #94a3b8;
      font-size: 15px;
    }
    .score-right {
      display: flex;
      align-items: center;
      gap: 24px;
    }
    .score-number {
      font-size: 56px;
      font-weight: 900;
      color: #ff007a;
      line-height: 1;
    }
    .score-rating {
      font-size: 16px;
      color: #cbd5e1;
    }
    .score-stars {
      color: #f59e0b;
      font-size: 20px;
      letter-spacing: 2px;
    }
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }
    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }
    .custom-table th {
      background: #f8fafc;
      color: #0f172a;
      font-weight: 700;
    }
    .custom-table tr:hover {
      background-color: #f8fafc;
    }
    .highlight-cell {
      color: #ff007a;
      font-weight: 700;
    }
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .review-user-info {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }
    .avatar-mock {
      width: 44px;
      height: 44px;
      background: linear-gradient(135deg, #ff007a, #7928ca);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #ffffff;
      font-weight: 700;
      font-size: 16px;
    }
    .user-meta h4 {
      font-size: 15px;
      color: #0f172a;
      font-weight: 700;
    }
    .user-meta span {
      font-size: 12px;
      color: var(--muted-text);
    }
    .review-card p {
      font-size: 14px;
      color: #334155;
      line-height: 1.6;
    }
    .cases-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      margin-bottom: 30px;
    }
    .media-card {
      background: #ffffff;
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .media-card img {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }
    .media-body {
      padding: 20px;
    }
    .media-body h3 {
      font-size: 18px;
      color: #0f172a;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .media-body p {
      font-size: 13px;
      color: var(--muted-text);
    }
    .faq-container {
      max-width: 800px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      margin-bottom: 14px;
      overflow: hidden;
      box-shadow: 0 2px 6px rgba(0,0,0,0.02);
    }
    .faq-question {
      padding: 20px;
      font-size: 16px;
      font-weight: 700;
      color: #0f172a;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-question::after {
      content: '+';
      font-size: 20px;
      color: var(--primary);
      transition: transform 0.2s ease;
    }
    .faq-item.active .faq-question::after {
      content: '-';
    }
    .faq-answer {
      display: none;
      padding: 0 20px 20px 20px;
      font-size: 14px;
      color: var(--muted-text);
      line-height: 1.7;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .form-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      padding: 40px;
    }
    .form-info-col h3 {
      font-size: 24px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 16px;
    }
    .form-info-col p {
      color: var(--muted-text);
      font-size: 15px;
      margin-bottom: 24px;
      line-height: 1.6;
    }
    .contact-details-list {
      list-style: none;
      margin-bottom: 24px;
    }
    .contact-details-list li {
      font-size: 14px;
      color: var(--dark-text);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .qr-block {
      display: flex;
      align-items: center;
      gap: 16px;
      background: #f8fafc;
      padding: 16px;
      border-radius: 8px;
    }
    .qr-block img {
      width: 90px;
      height: 90px;
      border-radius: 4px;
      display: block;
    }
    .qr-desc h4 {
      font-size: 14px;
      color: #0f172a;
      font-weight: 700;
    }
    .qr-desc p {
      font-size: 12px;
      color: var(--muted-text);
      margin-bottom: 0;
    }
    .form-col {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group label {
      font-size: 14px;
      font-weight: 600;
      color: #0f172a;
    }
    .form-group input, .form-group select, .form-group textarea {
      padding: 12px 14px;
      border-radius: 8px;
      border: 1px solid var(--border-color);
      background: #f8fafc;
      font-size: 14px;
      color: var(--dark-text);
      outline: none;
      transition: border-color 0.2s ease;
    }
    .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
      border-color: var(--primary);
      background: #ffffff;
    }
    .form-group textarea {
      resize: vertical;
      min-height: 100px;
    }
    .banner-promo {
      margin-top: 40px;
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--border-color);
    }
    .banner-promo img {
      width: 100%;
      height: auto;
      display: block;
    }
    .articles-block {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      padding: 24px;
      margin-top: 24px;
    }
    .article-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 12px;
    }
    .article-links a {
      font-size: 13px;
      color: var(--primary);
      background: #eff6ff;
      padding: 4px 10px;
      border-radius: 4px;
    }
    footer.site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 20px;
      color: #334155;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 40px;
    }
    .footer-col h4 {
      font-size: 16px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 16px;
    }
    .footer-col p {
      font-size: 13px;
      color: var(--muted-text);
      line-height: 1.6;
      margin-bottom: 12px;
    }
    .footer-links-list {
      list-style: none;
    }
    .footer-links-list li {
      margin-bottom: 8px;
    }
    .footer-links-list li a {
      font-size: 13px;
      color: var(--muted-text);
      transition: color 0.2s ease;
    }
    .footer-links-list li a:hover {
      color: var(--primary);
    }
    .friend-links-box {
      border-top: 1px solid var(--border-color);
      padding: 20px 0;
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      font-size: 13px;
      color: var(--muted-text);
    }
    .friend-links-box a {
      color: var(--muted-text);
      transition: color 0.2s;
    }
    .friend-links-box a:hover {
      color: var(--primary);
    }
    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
      text-align: center;
      font-size: 13px;
      color: var(--muted-text);
    }
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 4px 12px rgba(0,0,0,0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      border: 1px solid var(--border-color);
      font-size: 18px;
      color: var(--dark-text);
      transition: all 0.2s ease;
    }
    .float-btn:hover {
      transform: scale(1.05);
      color: #ff007a;
    }
    @media (max-width: 992px) {
      .nav-links {
        display: none;
      }
      .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 20px;
        gap: 12px;
        box-shadow: 0 8px 16px rgba(0,0,0,0.05);
      }
      .menu-toggle {
        display: block;
      }
      .metrics-grid, .steps-wrapper, .services-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .cases-grid, .platform-intro-card, .form-layout {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 640px) {
      .hero-title {
        font-size: 28px;
      }
      .metrics-grid, .steps-wrapper, .services-grid, .reviews-grid, .intro-features-list {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .score-right {
        width: 100%;
        justify-content: flex-start;
      }
      .score-number {
        font-size: 40px;
      }
    }