:root {
      --primary: #0891b2;
      --primary-dark: #0e7490;
      --primary-deep: #155e75;
      --primary-light: #06b6d4;
      --cyan-bg: #ecfeff;
      --cyan-soft: #f0fdfa;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-color: #cbd5e1;
      --card-bg: #ffffff;
      --bg-gradient: linear-gradient(180deg, #f0fdfa 0%, #f8fafc 100%);
      --radius: 12px;
      --shadow: 0 10px 25px -5px rgba(8, 145, 178, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
      --shadow-hover: 0 20px 30px -10px rgba(8, 145, 178, 0.18), 0 10px 15px -5px rgba(0, 0, 0, 0.06);
      --max-width: 1200px;
    }

    * {
      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: #f8fafc;
      color: var(--text-main);
      line-height: 1.6;
    }

    body {
      background: var(--bg-gradient);
      overflow-x: hidden;
    }

    a {
      color: var(--primary-dark);
      text-decoration: none;
      transition: all 0.25s ease;
    }

    a:hover {
      color: var(--primary-light);
    }

    .container {
      width: 100%;
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* Header & Nav */
    header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(8, 145, 178, 0.15);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }

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

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

    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }

    .brand-title {
      font-size: 20px;
      font-weight: 800;
      background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.5px;
    }

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

    .nav-links li a {
      display: block;
      padding: 8px 14px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      border-radius: 6px;
    }

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

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 15px;
      font-weight: 600;
      border-radius: 8px;
      cursor: pointer;
      border: none;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      text-align: center;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: #ffffff !important;
      box-shadow: 0 4px 14px rgba(8, 145, 178, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(8, 145, 178, 0.45);
      background: linear-gradient(135deg, var(--primary-light), var(--primary));
    }

    .btn-outline {
      border: 1.5px solid var(--primary);
      color: var(--primary-dark);
      background: transparent;
    }

    .btn-outline:hover {
      background: var(--cyan-bg);
    }

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

    /* Hero Section - STRICTLY NO IMAGES */
    .hero-section {
      padding: 90px 0 70px;
      background: radial-gradient(circle at 50% 20%, rgba(6, 182, 212, 0.12) 0%, rgba(240, 253, 250, 0) 70%);
      text-align: center;
      position: relative;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid rgba(8, 145, 178, 0.25);
      border-radius: 30px;
      font-size: 14px;
      color: var(--primary-dark);
      font-weight: 600;
      margin-bottom: 24px;
      box-shadow: 0 2px 8px rgba(8, 145, 178, 0.08);
    }

    .hero-title {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .hero-title span {
      background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      max-width: 820px;
      margin: 0 auto 36px;
      font-size: 18px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .hero-cta-group {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    .hero-cta-group .btn {
      padding: 14px 32px;
      font-size: 17px;
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 1000px;
      margin: 0 auto;
    }

    .stat-card {
      background: #ffffff;
      padding: 24px 16px;
      border-radius: var(--radius);
      border: 1px solid rgba(8, 145, 178, 0.12);
      box-shadow: var(--shadow);
      text-align: center;
    }

    .stat-number {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary-dark);
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* Section Component Commons */
    section {
      padding: 80px 0;
    }

    .section-header {
      text-align: center;
      max-width: 750px;
      margin: 0 auto 50px;
    }

    .section-tag {
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: var(--primary);
      margin-bottom: 10px;
      display: block;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
    }

    /* Platform Intro Block */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      background: #ffffff;
      padding: 40px;
      border-radius: 16px;
      border: 1px solid rgba(8, 145, 178, 0.15);
      box-shadow: var(--shadow);
    }

    .intro-text h3 {
      font-size: 26px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .intro-text p {
      color: var(--text-muted);
      margin-bottom: 20px;
      font-size: 15px;
    }

    .intro-features {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }

    .intro-features li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
    }

    .intro-features li::before {
      content: "✓";
      color: var(--primary);
      font-weight: bold;
    }

    .intro-media {
      text-align: center;
    }

    .ai-page-image {
      border-radius: 12px;
      box-shadow: var(--shadow);
    }

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

    .service-card {
      background: var(--card-bg);
      border-radius: var(--radius);
      padding: 28px;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow);
      transition: all 0.3s ease;
      position: relative;
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary-light);
    }

    .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: var(--cyan-bg);
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 18px;
    }

    .service-card h4 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .service-card p {
      font-size: 14px;
      color: var(--text-muted);
      flex-grow: 1;
      margin-bottom: 16px;
    }

    .service-tag {
      align-self: flex-start;
      font-size: 12px;
      padding: 4px 10px;
      background: #f1f5f9;
      color: var(--primary-dark);
      border-radius: 4px;
      font-weight: 600;
    }

    /* Models Cloud */
    .models-section {
      background: var(--cyan-soft);
      border-top: 1px solid rgba(8, 145, 178, 0.1);
      border-bottom: 1px solid rgba(8, 145, 178, 0.1);
    }

    .models-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

    .model-chip {
      background: #ffffff;
      padding: 8px 16px;
      border-radius: 20px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      border: 1px solid rgba(8, 145, 178, 0.15);
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
      transition: all 0.2s;
    }

    .model-chip:hover {
      background: var(--primary-dark);
      color: #ffffff;
      transform: scale(1.05);
    }

    /* Comparison Table Component */
    .rating-header {
      background: #ffffff;
      padding: 24px;
      border-radius: 12px;
      border: 1px solid rgba(8, 145, 178, 0.2);
      margin-bottom: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: var(--shadow);
    }

    .rating-score {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .score-num {
      font-size: 38px;
      font-weight: 900;
      color: var(--primary-dark);
    }

    .score-stars {
      color: #f59e0b;
      font-size: 20px;
    }

    .table-wrapper {
      overflow-x: auto;
      background: #ffffff;
      border-radius: 12px;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow);
    }

    table.comp-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 650px;
    }

    table.comp-table th, table.comp-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #e2e8f0;
      font-size: 14px;
    }

    table.comp-table th {
      background: #f8fafc;
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
    }

    table.comp-table tr.highlight {
      background: rgba(236, 254, 255, 0.5);
    }

    table.comp-table tr.highlight td {
      font-weight: 600;
      color: var(--primary-dark);
    }

    .check-yes {
      color: #059669;
      font-weight: bold;
    }

    .check-no {
      color: #94a3b8;
    }

    /* Workflow Steps */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
    }

    .step-card {
      background: #ffffff;
      padding: 20px 14px;
      border-radius: var(--radius);
      border: 1px solid #e2e8f0;
      text-align: center;
      position: relative;
    }

    .step-num {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--primary-dark);
      color: #ffffff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 12px;
      font-size: 14px;
    }

    .step-card h5 {
      font-size: 15px;
      margin-bottom: 6px;
    }

    .step-card p {
      font-size: 12px;
      color: var(--text-muted);
    }

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

    .case-card {
      background: #ffffff;
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow);
    }

    .case-img-box {
      width: 100%;
      height: 200px;
      overflow: hidden;
      background: #f1f5f9;
    }

    .case-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }

    .case-card:hover .case-img-box img {
      transform: scale(1.05);
    }

    .case-content {
      padding: 20px;
    }

    .case-content h5 {
      font-size: 17px;
      margin-bottom: 8px;
    }

    .case-content p {
      font-size: 13px;
      color: var(--text-muted);
    }

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

    .review-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius);
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow);
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .avatar-fake {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--primary-light));
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }

    .user-info h6 {
      font-size: 15px;
      color: var(--text-main);
    }

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

    .review-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

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

    .faq-item {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 8px;
      overflow: hidden;
    }

    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #ffffff;
      user-select: none;
    }

    .faq-question::after {
      content: "+";
      font-size: 20px;
      color: var(--primary);
      transition: transform 0.2s;
    }

    .faq-item.active .faq-question::after {
      content: "−";
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #f8fafc;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 16px 24px;
      border-top: 1px solid #e2e8f0;
    }

    /* Form & Contact Section */
    .contact-container {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      background: #ffffff;
      padding: 40px;
      border-radius: 16px;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow);
    }

    .contact-info h3 {
      font-size: 24px;
      margin-bottom: 16px;
    }

    .contact-info p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 24px;
    }

    .info-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-bottom: 24px;
    }

    .info-list li {
      font-size: 14px;
      display: flex;
      align-items: center;
      gap: 10px;

    }

    .qr-box {
      text-align: center;
      max-width: 140px;
      background: var(--cyan-bg);
      padding: 10px;
      border-radius: 8px;
      border: 1px solid rgba(8, 145, 178, 0.2);
    }

    .qr-box img {
      width: 100%;
      height: auto;
      border-radius: 4px;
      display: block;
      margin-bottom: 6px;
    }

    .qr-box span {
      font-size: 12px;
      font-weight: 600;
      color: var(--primary-dark);
    }

    .submit-form {
      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: var(--text-main);
    }

    .form-control {
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: 6px;
      font-size: 14px;
      outline: none;
      transition: border 0.2s;
    }

    .form-control:focus {
      border-color: var(--primary);
    }

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

    /* Articles Shortcode Block */
    .articles-block {
      background: #ffffff;
      padding: 30px;
      border-radius: 12px;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow);
      margin-bottom: 40px;
    }

    .articles-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 14px;
    }

    .articles-links a {
      font-size: 13px;
      padding: 6px 12px;
      background: #f1f5f9;
      border-radius: 4px;
      color: var(--primary-dark);
    }

    .articles-links a:hover {
      background: var(--cyan-bg);
    }

    /* Friend Links & Footer */
    footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
      border-top: 1px solid #1e293b;
    }

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

    .footer-brand h4 {
      color: #ffffff;
      font-size: 20px;
      margin-bottom: 12px;
    }

    .footer-brand p {
      font-size: 13px;
      line-height: 1.6;
    }

    .footer-col h5 {
      color: #ffffff;
      font-size: 15px;
      margin-bottom: 16px;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-col ul li a {
      color: #94a3b8;
      font-size: 13px;
    }

    .footer-col ul li a:hover {
      color: #ffffff;
    }

    .friend-links {
      background: #1e293b;
      padding: 20px;
      border-radius: 8px;
      margin-bottom: 30px;
    }

    .friend-links h6 {
      color: #ffffff;
      font-size: 14px;
      margin-bottom: 10px;
    }

    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .friend-links-list a {
      color: #cbd5e1;
      font-size: 13px;
    }

    .friend-links-list 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-dark);
      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;
      transition: all 0.2s;
    }

    .float-btn:hover {
      transform: scale(1.1);
      background: var(--primary-light);
    }

    /* Responsive */
    @media (max-width: 992px) {
      .hero-stats {
        grid-template-columns: repeat(2, 1fr);
      }
      .services-grid, .case-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .intro-grid, .contact-container {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 15px rgba(0,0,0,0.1);
        border-bottom: 1px solid #e2e8f0;
      }
      .nav-links.active {
        display: flex;
      }
      .nav-toggle {
        display: block;
      }
      .hero-title {
        font-size: 30px;
      }
      .hero-subtitle {
        font-size: 15px;
      }
      .services-grid, .case-grid, .reviews-grid, .steps-grid {
        grid-template-columns: 1fr;
      }
      .hero-stats {
        grid-template-columns: 1fr 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }