:root {
      --primary-color: #3b82f6;
      --primary-gradient: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
      --accent-coral: #f43f5e;
      --accent-amber: #f59e0b;
      --accent-emerald: #10b981;
      --bg-light: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-secondary: #475569;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --border-focus: #3b82f6;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
      --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
      --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    }

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

    body {
      font-family: var(--font-family);
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s ease;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    .header-site {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .brand-wrap .ai-page-logo {
      height: 40px;
      width: auto;
      display: block;
    }

    .brand-name {
      font-size: 20px;
      font-weight: 700;
      color: #1e293b;
      letter-spacing: -0.5px;
    }

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

    .nav-links a {
      display: block;
      padding: 8px 12px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-secondary);
      border-radius: var(--radius-sm);
    }

    .nav-links a:hover {
      color: var(--primary-color);
      background: #f1f5f9;
    }

    .nav-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--primary-gradient);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
    }

    .btn-primary:hover {
      opacity: 0.95;
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(79, 70, 229, 0.35);
    }

    .btn-outline {
      border-color: #cbd5e1;
      background: #ffffff;
      color: var(--text-main);
    }

    .btn-outline:hover {
      background: #f8fafc;
      border-color: #94a3b8;
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--text-main);
      padding: 4px;
    }

    /* Hero Section (No Images Allowed) */
    .hero-section {
      background: linear-gradient(180deg, #f0fdfa 0%, #f8fafc 100%);
      padding: 64px 0 80px 0;
      position: relative;
      border-bottom: 1px solid #edf2f7;
    }

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

    .hero-content {
      max-width: 640px;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      padding: 6px 14px;
      border-radius: 9999px;
      background: #e0f2fe;
      color: #0369a1;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 20px;
    }

    .hero-title {
      font-size: 38px;
      line-height: 1.25;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 20px;
      letter-spacing: -0.8px;
    }

    .hero-desc {
      font-size: 17px;
      line-height: 1.7;
      color: var(--text-secondary);
      margin-bottom: 32px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }

    .hero-showcase {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-lg);
    }

    .stat-badge-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }

    .stat-badge {
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 16px;
      transition: transform 0.2s;
    }

    .stat-badge:hover {
      transform: translateY(-2px);
      border-color: #cbd5e1;
    }

    .stat-badge .num {
      font-size: 26px;
      font-weight: 800;
      color: #2563eb;
      margin-bottom: 4px;
    }

    .stat-badge .label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 500;
    }

    .model-pills {
      margin-top: 20px;
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .pill-item {
      font-size: 12px;
      background: #f1f5f9;
      color: #334155;
      padding: 4px 10px;
      border-radius: 4px;
      font-weight: 500;
    }

    /* Section Styles */
    .section-wrap {
      padding: 72px 0;
      border-bottom: 1px solid #f1f5f9;
    }

    .section-wrap.alt-bg {
      background: #ffffff;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px auto;
    }

    .section-tag {
      font-size: 13px;
      font-weight: 700;
      color: #0284c7;
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 8px;
      display: block;
    }

    .section-title {
      font-size: 30px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-secondary);
    }

    /* Feature Grid (Cards) */
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 24px;
    }

    .card-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }

    .card-item:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-3px);
      border-color: #93c5fd;
    }

    .card-icon {
      width: 44px;
      height: 44px;
      border-radius: 8px;
      background: #e0f2fe;
      color: #0284c7;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 16px;
      font-weight: bold;
    }

    .card-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
      color: #1e293b;
    }

    .card-text {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* Process Flow */
    .step-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 20px;
      position: relative;
    }

    .step-num {
      width: 32px;
      height: 32px;
      background: #2563eb;
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .step-card h3 {
      font-size: 16px;
      margin-bottom: 6px;
    }

    .step-card p {
      font-size: 13px;
      color: var(--text-secondary);
    }

    /* Media Showcases */
    .media-grid-two {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
      margin-top: 32px;
    }

    .media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .media-card .img-box {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: #f1f5f9;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .media-card .img-box.square {
      aspect-ratio: 1 / 1;
      max-width: 360px;
      margin: 0 auto;
    }

    .media-card img {
      max-width: 100%;
      height: auto;
      display: block;
      object-fit: contain;
    }

    .media-card .info {
      padding: 20px;
    }

    .media-card .info h3 {
      font-size: 16px;
      margin-bottom: 6px;
    }

    .media-card .info p {
      font-size: 13px;
      color: var(--text-secondary);
    }

    /* Comparison Table Section */
    .compare-section {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }

    .score-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      background: linear-gradient(90deg, #eff6ff 0%, #fdf2f8 100%);
      padding: 24px;
      border-radius: var(--radius-md);
      margin-bottom: 28px;
      border: 1px solid #dbeafe;
    }

    .score-left h3 {
      font-size: 20px;
      color: #1e3a8a;
      margin-bottom: 4px;
    }

    .score-left p {
      font-size: 14px;
      color: #3b82f6;
    }

    .score-right {
      display: flex;
      align-items: baseline;
      gap: 12px;
    }

    .score-val {
      font-size: 40px;
      font-weight: 900;
      color: #dc2626;
      line-height: 1;
    }

    .score-sub {
      font-size: 14px;
      color: var(--text-muted);
    }

    .stars {
      color: #f59e0b;
      font-size: 18px;
      letter-spacing: 2px;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
    }

    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }

    .custom-table th, .custom-table td {
      padding: 14px 16px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }

    .custom-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }

    .custom-table td.highlight {
      font-weight: 600;
      color: #2563eb;
      background: #f0f7ff;
    }

    /* Testimonials */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
      gap: 20px;
    }

    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

    .user-info {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
    }

    .avatar-char {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: #e2e8f0;
      color: #334155;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }

    .user-details h4 {
      font-size: 15px;
      margin-bottom: 2px;
    }

    .user-details span {
      font-size: 12px;
      color: var(--text-muted);
    }

    .testimonial-card p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* FAQ Component */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 12px;
      overflow: hidden;
    }

    .faq-question {
      padding: 18px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
      font-size: 15px;
      background: #ffffff;
      transition: background-color 0.2s;
    }

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

    .faq-icon {
      font-size: 18px;
      line-height: 1;
      transition: transform 0.25s;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #f8fafc;
      border-top: 1px solid transparent;
    }

    .faq-answer-inner {
      padding: 18px 24px;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      border-top-color: var(--border-color);
    }

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

    /* Form Section */
    .form-wrap {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      max-width: 800px;
      margin: 0 auto;
      box-shadow: var(--shadow-sm);
    }

    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-bottom: 20px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-group.full {
      grid-column: span 2;
    }

    .form-label {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      background: #ffffff;
      color: var(--text-main);
      font-family: inherit;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      outline: none;
      border-color: var(--border-focus);
      box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
    }

    .form-textarea {
      resize: vertical;
      min-height: 90px;
    }

    /* Contact Details Grid */
    .contact-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 36px;
    }

    .contact-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
    }

    .contact-item h4 {
      font-size: 16px;
      margin-bottom: 12px;
      color: #1e293b;
    }

    .contact-item p {
      font-size: 14px;
      color: var(--text-secondary);
      margin-bottom: 6px;
    }

    .qr-box {
      max-width: 140px;
      margin: 12px auto 0 auto;
    }

    .qr-box img {
      max-width: 100%;
      height: auto;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      display: block;
    }

    /* Footer Styles */
    .site-footer {
      background: #0f172a;
      color: #cbd5e1;
      padding: 48px 0 24px 0;
      border-top: 1px solid #1e293b;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr;
      gap: 36px;
      padding-bottom: 36px;
      border-bottom: 1px solid #1e293b;
    }

    .footer-col h4 {
      font-size: 15px;
      color: #ffffff;
      margin-bottom: 16px;
    }

    .footer-col p {
      font-size: 13px;
      line-height: 1.7;
      color: #94a3b8;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .footer-links a {
      font-size: 13px;
      color: #94a3b8;
      display: inline-block;
    }

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

    .footer-bottom {
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
      color: #64748b;
    }

    /* Floating Customer Service */
    .float-dock {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .dock-btn {
      width: 48px;
      height: 48px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-md);
      cursor: pointer;
      color: #2563eb;
      font-weight: 700;
      font-size: 14px;
      transition: all 0.2s;
    }

    .dock-btn:hover {
      background: #2563eb;
      color: #ffffff;
    }

    /* Responsive */
    @media (max-width: 992px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .step-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
      .contact-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 20px;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links a {
        padding: 10px 0;
        width: 100%;
      }
      .hero-title {
        font-size: 28px;
      }
      .media-grid-two {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full {
        grid-column: span 1;
      }
    }