:root {
      --primary-cyan: #0fa4af;
      --primary-dark: #024959;
      --primary-light: #e8f7f8;
      --accent-teal: #00bfaf;
      --accent-grad: linear-gradient(135deg, #024959 0%, #0fa4af 50%, #43e97b 100%);
      --soft-grad: linear-gradient(180deg, #f2fbfa 0%, #ffffff 100%);
      --text-main: #1e293b;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --card-bg: #ffffff;
      --shadow-sm: 0 4px 12px rgba(2, 73, 89, 0.05);
      --shadow-md: 0 10px 30px rgba(2, 73, 89, 0.08);
      --shadow-lg: 0 18px 45px rgba(2, 73, 89, 0.12);
      --max-width: 1200px;
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      color: var(--text-main);
      background: #f8fafc;
      line-height: 1.6;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

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

    .container {
      width: 100%;
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
    }

    .section {
      padding: 70px 0;
      background: #f8fafc;
      position: relative;
    }

    .section:nth-of-type(even) {
      background: #ffffff;
    }

    .section-title-wrap {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 48px auto;
    }

    .section-badge {
      display: inline-block;
      padding: 6px 16px;
      background: var(--primary-light);
      color: var(--primary-cyan);
      font-size: 0.875rem;
      font-weight: 600;
      border-radius: 999px;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 14px;
      line-height: 1.3;
    }

    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Header */
    .site-header {
      position: sticky;
      top: 0;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      z-index: 1000;
      height: 72px;
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 100%;
    }

    .logo-container {
      display: flex;
      align-items: center;
      gap: 12px;
      max-height: 48px;
    }

    .ai-page-logo {
      height: 42px;
      width: auto;
      object-fit: contain;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li a {
      font-size: 0.938rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 12px;
      border-radius: 6px;
      transition: color 0.2s, background-color 0.2s;
    }

    .nav-links li a:hover {
      color: var(--primary-cyan);
      background-color: var(--primary-light);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: 8px;
      font-size: 0.938rem;
      font-weight: 600;
      transition: all 0.25s ease;
      cursor: pointer;
      border: 1px solid transparent;
      text-align: center;
    }

    .btn-primary {
      background: var(--accent-grad);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(15, 164, 175, 0.35);
    }

    .btn-primary:hover {
      box-shadow: 0 6px 20px rgba(15, 164, 175, 0.5);
      transform: translateY(-2px);
    }

    .btn-secondary {
      background: #ffffff;
      color: var(--primary-dark);
      border-color: var(--border-color);
    }

    .btn-secondary:hover {
      background: var(--primary-light);
      border-color: var(--primary-cyan);
    }

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

    /* Hero Section - STRICTLY NO IMAGES */
    .hero-section {
      background: radial-gradient(circle at 80% 20%, rgba(67, 233, 123, 0.12) 0%, rgba(15, 164, 175, 0.08) 35%, #ffffff 100%);
      padding: 80px 0 90px 0;
      border-bottom: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }

    .hero-content h1 {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--primary-dark);
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-content p {
      font-size: 1.125rem;
      color: var(--text-muted);
      margin-bottom: 32px;
      line-height: 1.6;
    }

    .hero-btn-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }

    .btn-hero-main {
      padding: 14px 34px;
      font-size: 1.063rem;
    }

    .hero-tags-label {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-muted);
      margin-bottom: 10px;
    }

    .model-tags-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .model-tag {
      font-size: 0.75rem;
      padding: 4px 10px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 6px;
      color: var(--primary-dark);
      font-weight: 500;
    }

    .hero-visual-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 28px;
      box-shadow: var(--shadow-lg);
      position: relative;
    }

    .hero-stat-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .stat-item {
      background: var(--soft-grad);
      border: 1px solid rgba(15, 164, 175, 0.15);
      border-radius: 12px;
      padding: 18px;
    }

    .stat-val {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--primary-cyan);
      margin-bottom: 4px;
    }

    .stat-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    .platform-highlight-bar {
      margin-top: 20px;
      padding: 14px;
      background: var(--primary-light);
      border-radius: 10px;
      font-size: 0.875rem;
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      gap: 10px;
    }

    /* Cards & Grids */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .grid-2 {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      align-items: center;
    }

    .service-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      transition: all 0.25s ease;
      box-shadow: var(--shadow-sm);
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-cyan);
    }

    .card-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: var(--primary-light);
      color: var(--primary-cyan);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.1rem;
      margin-bottom: 16px;
    }

    .service-card h3 {
      font-size: 1.15rem;
      color: var(--primary-dark);
      margin-bottom: 8px;
    }

    .service-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* Image Showcase Section */
    .media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .media-card-img-wrap {
      width: 100%;
      background: #e2e8f0;
    }

    .media-card-body {
      padding: 18px;
    }

    .media-card-body h4 {
      font-size: 1rem;
      color: var(--primary-dark);
      margin-bottom: 6px;
    }

    .media-card-body p {
      font-size: 0.813rem;
      color: var(--text-muted);
    }

    /* Steps */
    .step-list {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      text-align: center;
      position: relative;
    }

    .step-number {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 36px;
      height: 36px;
      background: var(--primary-cyan);
      color: #ffffff;
      font-weight: 700;
      border-radius: 50%;
      margin-bottom: 14px;
    }

    .step-card h4 {
      font-size: 1.05rem;
      color: var(--primary-dark);
      margin-bottom: 8px;
    }

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

    /* Comparison Table */
    .table-container {
      overflow-x: auto;
      background: #ffffff;
      border-radius: 12px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.938rem;
    }

    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }

    .custom-table th {
      background: #f1f5f9;
      color: var(--primary-dark);
      font-weight: 600;
    }

    .custom-table tr:last-child td {
      border-bottom: none;
    }

    .custom-table tr.highlight {
      background: var(--primary-light);
      font-weight: 600;
    }

    .score-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 10px;
      background: #10b981;
      color: #ffffff;
      border-radius: 6px;
      font-size: 0.813rem;
      font-weight: 700;
    }

    /* FAQ Accordion */
    .faq-wrapper {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 10px;
      overflow: hidden;
    }

    .faq-question {
      padding: 18px 24px;
      width: 100%;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: none;
      border: none;
      font-size: 1rem;
      font-weight: 600;
      color: var(--primary-dark);
      cursor: pointer;
      text-align: left;
    }

    .faq-question:hover {
      background: #f8fafc;
    }

    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.25s ease;
      color: var(--primary-cyan);
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      padding: 0 24px;
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 0 24px 20px 24px;
    }

    /* Reviews */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 0.875rem;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.6;
    }

    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .reviewer-avatar {
      width: 40px;
      height: 40px;
      background: var(--primary-cyan);
      color: #ffffff;
      font-weight: 700;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.875rem;
    }

    .reviewer-info h5 {
      font-size: 0.938rem;
      color: var(--primary-dark);
    }

    .reviewer-info span {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* Articles & Form */
    .form-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 32px;
      box-shadow: var(--shadow-md);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-group label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--primary-dark);
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      font-size: 0.938rem;
      color: var(--text-main);
      background: #f8fafc;
      outline: none;
      transition: border-color 0.2s;
    }

    .form-control:focus {
      border-color: var(--primary-cyan);
      background: #ffffff;
    }

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

    /* Footer */
    .site-footer {
      background: #022b34;
      color: #94a3b8;
      padding: 60px 0 30px 0;
      font-size: 0.875rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-brand h4 {
      color: #ffffff;
      font-size: 1.15rem;
      margin-bottom: 12px;
    }

    .footer-col h5 {
      color: #ffffff;
      font-size: 0.95rem;
      margin-bottom: 16px;
    }

    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-links-list a {
      color: #94a3b8;
      transition: color 0.2s;
    }

    .footer-links-list a:hover {
      color: #ffffff;
    }

    .qr-box {
      background: #ffffff;
      padding: 8px;
      border-radius: 8px;
      width: 120px;
      margin-bottom: 8px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 24px;
      text-align: center;
      font-size: 0.813rem;
    }

    /* Floating Contact */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary-cyan);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-md);
      cursor: pointer;
      border: none;
      font-size: 1.2rem;
      transition: transform 0.2s;
    }

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

    /* Mobile Responsive */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .grid-4, .step-list {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.show {
        display: flex;
      }
      .grid-3, .grid-4, .step-list, .reviews-grid, .grid-2 {
        grid-template-columns: 1fr;
      }
      .hero-content h1 {
        font-size: 1.75rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }