:root {
      --primary-color: #0f766e;
      --primary-light: #14b8a6;
      --primary-mint: #2dd4bf;
      --bg-light: #f0fdfa;
      --bg-card: #ffffff;
      --text-main: #134e4a;
      --text-dark: #0f172a;
      --text-muted: #475569;
      --border-color: #ccfbf1;
      --shadow-sm: 0 4px 6px -1px rgba(15, 118, 110, 0.06), 0 2px 4px -2px rgba(15, 118, 110, 0.06);
      --shadow-lg: 0 20px 25px -5px rgba(15, 118, 110, 0.1), 0 8px 10px -6px rgba(15, 118, 110, 0.1);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 20px;
    }

    * {
      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;
    }

    body {
      background-color: var(--bg-light);
      color: var(--text-dark);
      line-height: 1.6;
      overflow-x: hidden;
    }

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

    header.site-header {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(8px);
      position: sticky;
      top: 0;
      z-index: 1000;
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }

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

    .logo-box {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }

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

    .brand-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--primary-color);
    }

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

    .nav-links a {
      text-decoration: none;
      color: var(--text-dark);
      font-weight: 500;
      font-size: 15px;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      transition: all 0.25s ease;
    }

    .nav-links a:hover {
      color: var(--primary-color);
      background-color: #e6fffa;
    }

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

    .btn-nav-primary {
      background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
      color: #ffffff !important;
      padding: 8px 18px !important;
      border-radius: 50px !important;
      text-decoration: none;
      font-size: 14px;
      font-weight: 600;
      box-shadow: 0 4px 12px rgba(20, 184, 166, 0.3);
      transition: transform 0.2s, box-shadow 0.2s;
    }

    .btn-nav-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(20, 184, 166, 0.4);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--primary-color);
      cursor: pointer;
      padding: 4px;
    }

    /* Hero Section (No Images Allowed) */
    .hero-section {
      position: relative;
      padding: 90px 0 80px 0;
      background: radial-gradient(circle at 80% 20%, #ccfbf1 0%, rgba(240, 253, 250, 0) 50%),
                  radial-gradient(circle at 10% 80%, #99f6e4 0%, rgba(240, 253, 250, 0) 40%);
      text-align: center;
    }

    .hero-tag {
      display: inline-block;
      padding: 6px 16px;
      background-color: #e6fffa;
      color: var(--primary-color);
      font-size: 13px;
      font-weight: 700;
      border-radius: 30px;
      border: 1px solid var(--primary-mint);
      margin-bottom: 20px;
      letter-spacing: 0.5px;
    }

    .hero-title {
      font-size: 38px;
      line-height: 1.3;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 20px;
      max-width: 900px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-title span {
      color: var(--primary-color);
    }

    .hero-desc {
      font-size: 17px;
      color: var(--text-muted);
      max-width: 760px;
      margin: 0 auto 36px auto;
      line-height: 1.7;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }

    .btn-hero-main {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, #0d9488, #14b8a6);
      color: #ffffff;
      font-size: 16px;
      font-weight: 700;
      padding: 14px 34px;
      border-radius: 50px;
      text-decoration: none;
      box-shadow: 0 8px 20px rgba(13, 148, 136, 0.25);
      transition: all 0.25s ease;
    }

    .btn-hero-main:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 24px rgba(13, 148, 136, 0.35);
      color: #ffffff;
    }

    .btn-hero-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: #ffffff;
      color: var(--primary-color);
      font-size: 16px;
      font-weight: 600;
      padding: 14px 30px;
      border-radius: 50px;
      text-decoration: none;
      border: 1px solid var(--primary-mint);
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }

    .btn-hero-secondary:hover {
      background-color: #e6fffa;
      transform: translateY(-3px);
    }

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

    .metric-card {
      background: #ffffff;
      padding: 24px 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease;
    }

    .metric-card:hover {
      transform: translateY(-4px);
    }

    .metric-number {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary-color);
      margin-bottom: 6px;
    }

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

    /* Common Section */
    section {
      padding: 70px 0;
    }

    .section-header {
      text-align: center;
      margin-bottom: 48px;
    }

    .section-tag {
      font-size: 13px;
      font-weight: 700;
      color: var(--primary-color);
      text-transform: uppercase;
      margin-bottom: 8px;
      display: inline-block;
      letter-spacing: 1px;
    }

    .section-title {
      font-size: 30px;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 12px;
    }

    .section-subtitle {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto;
    }

    /* Platform Overview */
    .about-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .about-text h3 {
      font-size: 24px;
      font-weight: 700;
      color: var(--primary-color);
      margin-bottom: 16px;
    }

    .about-text p {
      color: var(--text-muted);
      margin-bottom: 14px;
      font-size: 15px;
      line-height: 1.8;
    }

    .platform-feature-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-top: 20px;
    }

    .platform-feature-list li {
      font-size: 14px;
      color: var(--text-dark);
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 500;
    }

    .platform-feature-list li::before {
      content: "✓";
      color: var(--primary-light);
      font-weight: bold;
    }

    .model-badge-container {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      background: #f0fdfa;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }

    .model-badge {
      background: #ffffff;
      color: var(--primary-color);
      font-size: 12px;
      font-weight: 600;
      padding: 6px 12px;
      border-radius: 20px;
      border: 1px solid #99f6e4;
    }

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

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

    .service-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: var(--primary-mint);
    }

    .service-icon {
      width: 48px;
      height: 48px;
      background: #e6fffa;
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 12px;
      font-size: 22px;
      margin-bottom: 20px;
      font-weight: bold;
    }

    .service-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-dark);
    }

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

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

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

    .step-idx {
      width: 36px;
      height: 36px;
      background: var(--primary-color);
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      margin: 0 auto 16px auto;
    }

    .step-card h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }

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

    /* Comparison Table */
    .comparison-section {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .comparison-header-box {
      text-align: center;
      margin-bottom: 30px;
    }

    .rating-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #f0fdfa;
      border: 1px solid var(--primary-mint);
      padding: 8px 20px;
      border-radius: 30px;
      color: var(--primary-color);
      font-weight: 700;
      font-size: 15px;
      margin-top: 10px;
    }

    .table-wrapper {
      overflow-x: auto;
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }

    .compare-table th {
      background-color: #f0fdfa;
      color: var(--primary-color);
      font-weight: 700;
    }

    .compare-table tr:hover td {
      background-color: #fafffe;
    }

    .highlight-cell {
      color: var(--primary-color);
      font-weight: 700;
      background-color: #f0fdfa;
    }

    /* Token Price Table */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .token-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      text-align: center;
      position: relative;
    }

    .token-card.featured {
      border: 2px solid var(--primary-light);
      background: #fcfefe;
    }

    .token-badge {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary-color);
      color: #fff;
      font-size: 12px;
      padding: 2px 12px;
      border-radius: 12px;
      font-weight: bold;
    }

    .token-price {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary-color);
      margin: 16px 0 8px 0;
    }

    .token-features {
      list-style: none;
      margin: 20px 0;
      text-align: left;
    }

    .token-features li {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* Media Visuals Section */
    .media-gallery {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 20px;
      margin-bottom: 24px;
    }

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

    .media-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.3s;
    }

    .media-item:hover img {
      transform: scale(1.02);
    }

    .banners-slider-static {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }

    .banner-thumb {
      border-radius: var(--radius-sm);
      overflow: hidden;
      border: 1px solid var(--border-color);
      background: #fff;
    }

    .banner-thumb img {
      width: 100%;
      height: auto;
      display: block;
    }

    /* Testimonials */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

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

    .testi-content {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
    }

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

    .testi-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: #ccfbf1;
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
    }

    .testi-meta h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-dark);
    }

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

    /* FAQ Accordion */
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
      max-width: 900px;
      margin: 0 auto;
    }

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

    .faq-question {
      padding: 18px 24px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-weight: 600;
      color: var(--text-dark);
      user-select: none;
    }

    .faq-question:hover {
      color: var(--primary-color);
    }

    .faq-icon {
      font-size: 18px;
      color: var(--primary-color);
      transition: transform 0.2s ease;
    }

    .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;
      background: #fafdfc;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 0 24px 18px 24px;
      border-top: 1px solid #f0fdfa;
    }

    /* Form Section */
    .form-box-container {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }

    .form-info-title {
      font-size: 22px;
      font-weight: 700;
      color: var(--primary-color);
      margin-bottom: 16px;
    }

    .form-info-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 24px;
    }

    .contact-item-row {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
      font-size: 14px;
      color: var(--text-dark);
    }

    .contact-qr-wrapper {
      margin-top: 20px;
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .contact-qr-wrapper img {
      width: 100px;
      height: 100px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }

    .form-element-group {
      margin-bottom: 16px;
    }

    .form-element-group label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-dark);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border: 1px solid #cbd5e1;
      font-size: 14px;
      outline: none;
      transition: border-color 0.2s;
    }

    .form-control:focus {
      border-color: var(--primary-light);
      box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.15);
    }

    .btn-form-submit {
      width: 100%;
      background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
      color: #ffffff;
      border: none;
      padding: 14px;
      border-radius: var(--radius-sm);
      font-size: 16px;
      font-weight: 700;
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(20, 184, 166, 0.25);
      transition: transform 0.2s;
    }

    .btn-form-submit:hover {
      transform: translateY(-2px);
    }

    /* Articles & Links */
    .article-link-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 24px;
    }

    .article-link-item {
      background: #ffffff;
      padding: 10px 18px;
      border-radius: 30px;
      border: 1px solid var(--border-color);
      text-decoration: none;
      color: var(--text-dark);
      font-size: 13px;
      transition: all 0.2s;
    }

    .article-link-item:hover {
      border-color: var(--primary-mint);
      color: var(--primary-color);
      background: #f0fdfa;
    }

    /* Footer */
    footer.site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 24px 0;
      color: var(--text-muted);
      font-size: 14px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 30px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: var(--text-dark);
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .footer-links-list {
      list-style: none;
    }

    .footer-links-list li {
      margin-bottom: 10px;
    }

    .footer-links-list a {
      color: var(--text-muted);
      text-decoration: none;
      transition: color 0.2s;
    }

    .footer-links-list a:hover {
      color: var(--primary-color);
    }

    .friend-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .friend-links-wrap a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 13px;
      background: #f8fafc;
      padding: 4px 10px;
      border-radius: 4px;
      border: 1px solid #e2e8f0;
    }

    .friend-links-wrap a:hover {
      color: var(--primary-color);
      border-color: var(--primary-mint);
    }

    .footer-bottom {
      border-top: 1px solid #f1f5f9;
      padding-top: 20px;
      text-align: center;
      font-size: 13px;
      color: #94a3b8;
    }

    /* Float Service Button */
    .float-service {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      background: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
      border: 1px solid var(--border-color);
      color: var(--primary-color);
      text-decoration: none;
      font-size: 18px;
      cursor: pointer;
      transition: transform 0.2s;
    }

    .float-btn:hover {
      transform: scale(1.08);
    }

    /* Responsive */
    @media (max-width: 992px) {
      .hero-metrics, .grid-4, .banners-slider-static, .steps-container {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3, .token-grid, .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-box, .form-box-container, .media-gallery {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 16px 20px;
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.05);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-title {
        font-size: 26px;
      }
      .hero-metrics, .grid-4, .grid-3, .token-grid, .testimonials-grid, .banners-slider-static, .steps-container {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }