/* ==================== Reset & General CSS ==================== */
    :root {
      --primary-color: #2563eb;
      --primary-gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
      --accent-color: #06b6d4;
      --vibrant-pink: #ec4899;
      --vibrant-orange: #f97316;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --bg-alt: #f1f5f9;
      --text-dark: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --border-accent: #cbd5e1;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -2px rgba(0,0,0,0.05);
      --shadow-md: 0 10px 25px -5px rgba(37,99,235,0.1), 0 8px 10px -6px rgba(0,0,0,0.05);
      --shadow-lg: 0 20px 30px -10px rgba(124,58,237,0.15);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-main);
      color: var(--text-dark);
      line-height: 1.6;
    }

    body {
      overflow-x: hidden;
      width: 100%;
    }

    a {
      color: var(--primary-color);
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover {
      color: #1d4ed8;
    }

    /* Container Standard */
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    .section-title-wrap {
      text-align: center;
      margin-bottom: 40px;
    }
    .section-badge {
      display: inline-block;
      padding: 6px 16px;
      background: rgba(37, 99, 235, 0.08);
      color: var(--primary-color);
      font-weight: 700;
      font-size: 14px;
      border-radius: 50px;
      margin-bottom: 12px;
      border: 1px solid rgba(37, 99, 235, 0.2);
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-dark);
      letter-spacing: -0.5px;
    }
    .section-subtitle {
      font-size: 16px;
      color: var(--text-muted);
      margin-top: 8px;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
    }

    /* Gradient Text & Elements */
    .gradient-text {
      background: linear-gradient(135deg, #2563eb, #7c3aed, #ec4899);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    /* Buttons */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      border-radius: var(--radius-sm);
      font-weight: 700;
      font-size: 15px;
      cursor: pointer;
      border: none;
      transition: var(--transition);
      text-decoration: none;
      gap: 8px;
    }
    .btn-primary {
      background: var(--primary-gradient);
      color: #ffffff !important;
      box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(37, 99, 235, 0.5);
    }
    .btn-secondary {
      background: #ffffff;
      color: var(--text-dark) !important;
      border: 2px solid var(--border-color);
    }
    .btn-secondary:hover {
      background: #f8fafc;
      border-color: var(--primary-color);
      color: var(--primary-color) !important;
      transform: translateY(-2px);
    }
    .btn-accent {
      background: linear-gradient(135deg, #ec4899 0%, #f97316 100%);
      color: #ffffff !important;
      box-shadow: 0 4px 14px rgba(236, 72, 153, 0.35);
    }
    .btn-accent:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(236, 72, 153, 0.5);
    }

    /* Navigation Bar */
    .header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 15px;
    }
    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }
    .ai-page-home-link {
      font-weight: 700;
      font-size: 15px;
      color: var(--text-dark);
      padding: 6px 12px;
      background: var(--bg-alt);
      border-radius: 6px;
    }
    .ai-page-home-link:hover {
      background: rgba(37, 99, 235, 0.1);
      color: var(--primary-color);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 20px;
      list-style: none;
    }
    .nav-menu a {
      color: var(--text-dark);
      font-weight: 600;
      font-size: 14px;
    }
    .nav-menu a:hover {
      color: var(--primary-color);
    }
    .nav-cta {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--text-dark);
    }

    /* Section Global Wrapper */
    section {
      padding: 80px 0;
      border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    }
    .bg-light {
      background-color: #ffffff;
    }
    .bg-vibrant-soft {
      background: linear-gradient(180deg, #f8fafc 0%, #eff6ff 50%, #f8fafc 100%);
    }

    /* 1. Hero Section (NO IMAGES PER RULE) */
    .hero-section {
      padding: 90px 0 80px 0;
      background: radial-gradient(circle at 10% 20%, rgba(37, 99, 235, 0.08) 0%, rgba(124, 58, 237, 0.05) 50%, rgba(255, 255, 255, 0) 100%), #ffffff;
      text-align: center;
      position: relative;
    }
    .hero-badge-group {
      display: flex;
      justify-content: center;
      gap: 12px;
      flex-wrap: wrap;
      margin-bottom: 24px;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      border-radius: 50px;
      font-size: 13px;
      font-weight: 700;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      color: var(--text-dark);
    }
    .hero-h1 {
      font-size: 38px;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 20px;
      color: var(--text-dark);
      letter-spacing: -0.8px;
    }
    .hero-p {
      font-size: 18px;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 36px auto;
      line-height: 1.7;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }
    .stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 24px 16px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-color);
    }
    .stat-num {
      font-size: 32px;
      font-weight: 900;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 4px;
    }
    .stat-desc {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* 2. Platform Intro & About Us */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .about-content h3 {
      font-size: 26px;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .about-content p {
      color: var(--text-muted);
      margin-bottom: 20px;
      font-size: 15px;
    }
    .feature-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }
    .feature-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      font-size: 14px;
      color: var(--text-dark);
    }
    .feature-icon {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: rgba(37, 99, 235, 0.1);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 12px;
    }

    /* 3. Supported AI Models Tag Cloud & Grid */
    .tags-container {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 24px;
    }
    .tag-chip {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 8px 16px;
      border-radius: 50px;
      font-size: 13px;
      font-weight: 700;
      color: var(--text-dark);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .tag-chip:hover {
      background: var(--primary-color);
      color: #ffffff;
      border-color: var(--primary-color);
      transform: translateY(-2px);
    }

    /* 4. One-stop Creation & Standardized Workflow Steps */
    .workflow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
      transition: var(--transition);
    }
    .step-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-color);
    }
    .step-num {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: var(--primary-gradient);
      color: #ffffff;
      font-weight: 900;
      font-size: 18px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
    }
    .step-title {
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .step-desc {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 5. Solutions & Technical Standards */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .card-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: var(--transition);
    }
    .card-box:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .card-box-icon {
      font-size: 28px;
      margin-bottom: 14px;
      display: inline-block;
    }
    .card-box h4 {
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 10px;
    }
    .card-box p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 10. Comparison & Rating */
    .rating-banner {
      background: linear-gradient(135deg, #1e1b4b 0%, #311b92 100%);
      color: #ffffff;
      padding: 30px;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
      flex-wrap: wrap;
      gap: 20px;
    }
    .rating-left h3 {
      font-size: 24px;
      font-weight: 800;
      color: #ffffff;
    }
    .rating-score {
      font-size: 44px;
      font-weight: 900;
      color: #facc15;
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .stars {
      color: #facc15;
      font-size: 24px;
      letter-spacing: 2px;
    }
    .table-responsive {
      overflow-x: auto;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      background: #ffffff;
    }
    .comp-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .comp-table th, .comp-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .comp-table th {
      background: #f8fafc;
      font-weight: 800;
      color: var(--text-dark);
    }
    .comp-table tr:hover {
      background: #f1f5f9;
    }
    .badge-highlight {
      background: rgba(37, 99, 235, 0.1);
      color: var(--primary-color);
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 4px;
    }

    /* 12. Token Price Comparison Table */
    .pricing-table th {
      background: #e0f2fe;
    }

    /* 13 & 14. Training Courses */
    .cert-badge {
      display: inline-block;
      background: #dbeafe;
      color: #1e40af;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 8px;
      border-radius: 4px;
      margin-bottom: 8px;
    }

    /* 9. Customer Cases Center (With Images) */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .case-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .case-img-wrap {
      width: 100%;
      max-height: 240px;
      overflow: hidden;
    }
    .ai-page-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }
    .case-content {
      padding: 20px;
    }
    .case-title {
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 8px;
    }

    /* 11. Customer Reviews (Exactly 6) */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .review-card {
      background: #ffffff;
      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-muted);
      margin-bottom: 16px;
      font-style: italic;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .avatar-placeholder {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 16px;
    }
    .user-info h5 {
      font-size: 15px;
      font-weight: 700;
    }
    .user-info p {
      font-size: 12px;
      color: var(--text-light);
    }

    /* Forms Section */
    .form-wrap {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
      max-width: 800px;
      margin: 0 auto;
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group.full-width {
      grid-column: span 2;
    }
    .form-group label {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-dark);
    }
    .form-control {
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      outline: none;
      transition: var(--transition);
      width: 100%;
    }
    .form-control:focus {
      border-color: var(--primary-color);
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }

    /* 16. Visible FAQ Accordion */
    .faq-accordion {
      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: var(--radius-sm);
      overflow: hidden;
    }
    .faq-header {
      padding: 18px 24px;
      font-weight: 700;
      font-size: 16px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      background: #ffffff;
    }
    .faq-header:hover {
      background: #f8fafc;
    }
    .faq-toggle-icon {
      font-size: 18px;
      transition: transform 0.3s;
    }
    .faq-body {
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: all 0.3s ease-out;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .faq-item.active .faq-body {
      padding: 0 24px 20px 24px;
      max-height: 300px;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }

    /* Articles & News Section */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-bottom: 24px;
    }
    .article-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 20px;
      border-radius: var(--radius-md);
    }
    .article-card h5 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    /* Footer */
    .footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px 0;
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-col h4 {
      color: #ffffff;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-links a {
      color: #94a3b8;
    }
    .footer-links a:hover {
      color: #ffffff;
    }
    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 10px;
    }
    .friend-links a {
      color: #94a3b8;
      background: rgba(255,255,255,0.05);
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 12px;
    }
    .friend-links a:hover {
      color: #ffffff;
      background: rgba(255,255,255,0.15);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
    }
    .qr-wrap {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .qr-wrap img {
      width: 90px;
      height: 90px;
      border-radius: 8px;
      border: 2px solid #ffffff;
    }

    /* Floating Widget */
    .floating-widget {
      position: fixed;
      bottom: 30px;
      right: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-md);
      cursor: pointer;
      font-size: 20px;
      border: none;
    }

    /* Responsive Breakdown */
    @media (max-width: 992px) {
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .workflow-grid { grid-template-columns: repeat(2, 1fr); }
      .grid-3 { grid-template-columns: 1fr; }
      .about-grid { grid-template-columns: 1fr; }
      .cases-grid { grid-template-columns: 1fr; }
      .reviews-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .hero-h1 { font-size: 30px; }
    }
    @media (max-width: 768px) {
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
      }
      .nav-menu.active { display: flex; }
      .mobile-toggle { display: block; }
      .hero-stats-grid { grid-template-columns: 1fr; }
      .workflow-grid { grid-template-columns: 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .form-group.full-width { grid-column: span 1; }
      .footer-grid { grid-template-columns: 1fr; }
      .hero-actions { flex-direction: column; }
      .btn { width: 100%; }
    }