:root {
      --primary-color: #059669;
      --primary-hover: #047857;
      --primary-light: #10b981;
      --accent-bg: #ecfdf5;
      --accent-border: #a7f3d0;
      --text-dark: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --bg-main: #f8fafc;
      --bg-white: #ffffff;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
      --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(5, 150, 105, 0.12), 0 4px 6px -2px rgba(0,0,0,0.05);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -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;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    a {
      color: var(--primary-color);
      text-decoration: none;
      transition: all 0.2s ease;
    }
    a:hover {
      color: var(--primary-hover);
    }

    /* Header & Navigation */
    .header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--accent-border);
      box-shadow: var(--shadow-sm);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }
    .nav-links {
      display: flex;
      gap: 0; /* STRICT RULE: .nav-links gap must be 0 */
      list-style: none;
      align-items: center;
    }
    .nav-links li {
      margin: 0;
      padding: 0;
    }
    .nav-links a {
      display: block;
      padding: 8px 12px;
      color: var(--text-dark);
      font-weight: 500;
      font-size: 14px;
      border-radius: var(--radius-sm);
    }
    .nav-links a:hover {
      color: var(--primary-color);
      background-color: var(--accent-bg);
    }
    .nav-btn {
      background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
      color: #ffffff !important;
      font-weight: 600 !important;
      padding: 8px 16px !important;
      border-radius: var(--radius-sm);
      box-shadow: 0 4px 10px rgba(16, 185, 129, 0.25);
    }
    .nav-btn:hover {
      opacity: 0.95;
      transform: translateY(-1px);
    }
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-dark);
      cursor: pointer;
    }

    /* Hero Section - STRICT: NO IMAGES ALLOWED */
    .hero-section {
      padding: 90px 0 70px 0;
      background: linear-gradient(180deg, #ecfdf5 0%, #f8fafc 100%);
      text-align: center;
      position: relative;
    }
    .hero-badge {
      display: inline-block;
      padding: 6px 16px;
      background: #dcfce7;
      color: var(--primary-color);
      font-weight: 600;
      font-size: 14px;
      border-radius: 50px;
      border: 1px solid var(--accent-border);
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 38px;
      font-weight: 800;
      color: var(--text-dark);
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-subtitle {
      font-size: 18px;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 36px auto;
      line-height: 1.6;
    }
    .hero-cta-group {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 28px;
      font-size: 16px;
      font-weight: 600;
      border-radius: var(--radius-md);
      transition: all 0.25s ease;
      cursor: pointer;
      border: none;
    }
    .btn-primary {
      background: linear-gradient(135deg, #10b981, #059669);
      color: #ffffff;
      box-shadow: var(--shadow-lg);
    }
    .btn-primary:hover {
      color: #ffffff;
      transform: translateY(-2px);
      box-shadow: 0 14px 20px -3px rgba(5, 150, 105, 0.3);
    }
    .btn-secondary {
      background: #ffffff;
      color: var(--text-dark);
      border: 1px solid #cbd5e1;
    }
    .btn-secondary:hover {
      border-color: var(--primary-color);
      color: var(--primary-color);
      background: var(--accent-bg);
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 20px;
      margin-top: 20px;
    }
    .stat-card {
      background: rgba(255, 255, 255, 0.8);
      border: 1px solid var(--accent-border);
      padding: 24px 16px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }
    .stat-number {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary-color);
      margin-bottom: 4px;
    }
    .stat-label {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* Section Component Standard Layout */
    .section {
      padding: 80px 0;
    }
    .section-white {
      background-color: var(--bg-white);
    }
    .section-header {
      text-align: center;
      max-width: 750px;
      margin: 0 auto 50px auto;
    }
    .section-tag {
      color: var(--primary-color);
      font-weight: 700;
      font-size: 14px;
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 8px;
      display: block;
    }
    .section-title {
      font-size: 30px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 14px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
    }

    /* Features & Grid Cards */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 20px;
    }
    .card {
      background: var(--bg-white);
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 28px;
      transition: all 0.3s ease;
    }
    .card:hover {
      border-color: var(--accent-border);
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }
    .card-icon {
      width: 48px;
      height: 48px;
      background: var(--accent-bg);
      color: var(--primary-color);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 20px;
      margin-bottom: 20px;
    }
    .card-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-dark);
    }
    .card-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Tag Cloud & Model Pills */
    .pill-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 30px;
    }
    .pill {
      background: #f1f5f9;
      color: var(--text-dark);
      padding: 6px 14px;
      border-radius: 30px;
      font-size: 13px;
      font-weight: 500;
      border: 1px solid #e2e8f0;
    }
    .pill-active {
      background: var(--accent-bg);
      color: var(--primary-color);
      border-color: var(--accent-border);
      font-weight: 600;
    }

    /* Comparison Table Section */
    .rating-badge {
      background: #fffbe6;
      border: 1px solid #ffe58f;
      padding: 20px;
      border-radius: var(--radius-md);
      text-align: center;
      margin-bottom: 30px;
    }
    .rating-stars {
      color: #faad14;
      font-size: 24px;
      margin-bottom: 6px;
    }
    .rating-score {
      font-size: 28px;
      font-weight: 800;
      color: #d48806;
    }
    .table-wrapper {
      overflow-x: auto;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      background: var(--bg-white);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .compare-table th, .compare-table td {
      padding: 16px 20px;
      text-align: left;
      border-bottom: 1px solid #e2e8f0;
    }
    .compare-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-dark);
    }
    .compare-table tr.highlight {
      background: var(--accent-bg);
    }
    .compare-table td.highlight-cell {
      color: var(--primary-color);
      font-weight: 700;
    }

    /* Reviews Grid */
    .review-card {
      background: var(--bg-white);
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .review-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .avatar-placeholder {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-color);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }
    .reviewer-info h4 {
      font-size: 15px;
      font-weight: 700;
    }
    .reviewer-info p {
      font-size: 12px;
      color: var(--text-light);
    }

    /* Process Flow */
    .process-steps {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: var(--bg-white);
      padding: 24px;
      border-radius: var(--radius-md);
      border-top: 4px solid var(--primary-color);
      box-shadow: var(--shadow-sm);
    }
    .step-num {
      font-size: 14px;
      font-weight: 800;
      color: var(--primary-color);
      margin-bottom: 8px;
    }

    /* FAQ Accordion */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--bg-white);
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
    }
    .faq-question {
      padding: 18px 24px;
      font-weight: 700;
      font-size: 16px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-question:hover {
      background: #f8fafc;
    }
    .faq-answer {
      padding: 0 24px 20px 24px;
      font-size: 14px;
      color: var(--text-muted);
      display: none;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .faq-item.active .faq-toggle {
      transform: rotate(180deg);
    }
    .faq-toggle {
      transition: transform 0.2s ease;
      font-weight: 400;
    }

    /* Form Section */
    .form-box {
      background: var(--bg-white);
      border: 1px solid var(--accent-border);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-lg);
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group.full {
      grid-column: span 2;
    }
    .form-label {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-dark);
    }
    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid #cbd5e1;
      border-radius: var(--radius-sm);
      font-size: 14px;
      outline: none;
      transition: border 0.2s;
    }
    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--primary-color);
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
    }
    .form-textarea {
      min-height: 110px;
      resize: vertical;
    }

    /* Media Assets Display Cards */
    .media-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid #e2e8f0;
    }
    .media-card img {
      width: 100%;
      height: 220px;
      object-fit: cover;
      display: block;
    }
    .media-content {
      padding: 20px;
    }

    /* Contact Info Panel */
    .contact-panel {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      align-items: center;
    }
    .qr-box {
      text-align: center;
      padding: 20px;
      background: var(--accent-bg);
      border-radius: var(--radius-md);
      border: 1px dashed var(--accent-border);
    }
    .qr-box img {
      width: 160px;
      height: 160px;
      object-fit: contain;
      margin-bottom: 10px;
      border-radius: 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: 30px;
      margin-bottom: 40px;
    }
    .footer-h4 {
      color: #ffffff;
      font-size: 16px;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 8px;
    }
    .footer-links a {
      color: #94a3b8;
    }
    .footer-links a:hover {
      color: #ffffff;
    }
    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 15px;
    }
    .friend-links a {
      color: #94a3b8;
      font-size: 13px;
    }
    .friend-links a:hover {
      color: var(--primary-light);
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
      color: #64748b;
    }

    /* Floating Widget */
    .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: var(--primary-color);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 12px rgba(0,0,0,0.15);
      cursor: pointer;
      font-size: 20px;
      border: none;
    }
    .float-btn:hover {
      transform: scale(1.05);
    }

    /* Responsive Queries */
    @media (max-width: 992px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid #e2e8f0;
        box-shadow: var(--shadow-lg);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full {
        grid-column: span 1;
      }
      .contact-panel {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 640px) {
      .hero-title {
        font-size: 28px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }