/* CSS Variables & Global Reset - Doodle Aesthetic Light Mode */
    :root {
      --bg-color: #faf9f5;
      --card-bg: #ffffff;
      --text-main: #1a1a24;
      --text-muted: #555566;
      --border-dark: #1e1e24;
      --border-width: 2px;
      --pop-yellow: #ffb703;
      --pop-pink: #ff5964;
      --pop-blue: #3a86ff;
      --pop-green: #06d6a0;
      --pop-purple: #8338ec;
      --shadow-doodle: 4px 4px 0px #1e1e24;
      --shadow-doodle-lg: 6px 6px 0px #1e1e24;
      --shadow-doodle-hover: 8px 8px 0px #1e1e24;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

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

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

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

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    /* Header & Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(250, 249, 245, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: var(--border-width) solid var(--border-dark);
      padding: 12px 0;
    }

    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .ai-page-logo {
      max-height: 42px;
      width: auto;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

    /* Strict Rule: .nav-links gap must be 0 */
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }

    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      border-radius: var(--radius-sm);
      margin: 0 2px;
    }

    .nav-links li a:hover {
      background-color: var(--pop-yellow);
      color: var(--border-dark);
    }

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

    /* Doodle Button Style */
    .btn-doodle {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      background-color: var(--pop-yellow);
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-doodle);
      cursor: pointer;
      transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
    }

    .btn-doodle:hover {
      transform: translate(-2px, -2px);
      box-shadow: var(--shadow-doodle-hover);
    }

    .btn-doodle:active {
      transform: translate(2px, 2px);
      box-shadow: 2px 2px 0px #1e1e24;
    }

    .btn-primary {
      background-color: var(--pop-pink);
      color: #ffffff;
    }

    .btn-blue {
      background-color: var(--pop-blue);
      color: #ffffff;
    }

    .btn-green {
      background-color: var(--pop-green);
      color: var(--border-dark);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-sm);
      padding: 6px 10px;
      font-size: 1.2rem;
      cursor: pointer;
    }

    /* Section Global Styles */
    section {
      padding: 70px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      margin-bottom: 50px;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      font-size: 0.85rem;
      font-weight: 700;
      background-color: var(--pop-yellow);
      border: var(--border-width) solid var(--border-dark);
      border-radius: 20px;
      box-shadow: 2px 2px 0px #1e1e24;
      margin-bottom: 12px;
      text-transform: uppercase;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      line-height: 1.3;
    }

    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 680px;
      margin: 12px auto 0;
    }

    /* 1. Hero Section - STRICT NO IMAGES */
    .hero-section {
      padding: 80px 0 60px;
      background-color: #ffffff;
      border-bottom: var(--border-width) solid var(--border-dark);
      position: relative;
      overflow: hidden;
    }

    /* Decorative CSS shapes (No Image) */
    .hero-bg-shape {
      position: absolute;
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-md);
      z-index: 1;
      opacity: 0.8;
    }

    .shape-1 {
      top: 10%;
      left: 3%;
      width: 70px;
      height: 70px;
      background-color: var(--pop-pink);
      transform: rotate(-12deg);
    }

    .shape-2 {
      bottom: 15%;
      right: 4%;
      width: 90px;
      height: 90px;
      background-color: var(--pop-blue);
      transform: rotate(15deg);
      border-radius: 50%;
    }

    .shape-3 {
      top: 20%;
      right: 8%;
      width: 60px;
      height: 60px;
      background-color: var(--pop-yellow);
      transform: rotate(45deg);
    }

    .hero-content {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-badge-group {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-bottom: 24px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      font-size: 0.9rem;
      font-weight: 700;
      background-color: var(--bg-color);
      border: var(--border-width) solid var(--border-dark);
      border-radius: 30px;
      box-shadow: 2px 2px 0px #1e1e24;
    }

    .hero-title {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
    }

    .hero-title span {
      background-color: var(--pop-yellow);
      padding: 0 8px;
      border-radius: 6px;
      border: var(--border-width) solid var(--border-dark);
      display: inline-block;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      margin-bottom: 34px;
      line-height: 1.7;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

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

    .stat-card {
      background-color: var(--bg-color);
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-doodle);
      transition: transform 0.2s ease;
    }

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

    .stat-number {
      font-size: 1.8rem;
      font-weight: 900;
      color: var(--pop-blue);
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-muted);
    }

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

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

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .doodle-card {
      background-color: var(--card-bg);
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-doodle);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      position: relative;
    }

    .doodle-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-doodle-hover);
    }

    .card-icon-tag {
      display: inline-block;
      width: 44px;
      height: 44px;
      line-height: 40px;
      text-align: center;
      font-size: 1.3rem;
      font-weight: 800;
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
      box-shadow: 2px 2px 0px #1e1e24;
    }

    .card-title {
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .card-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Section 2: About Us */
    .about-feature-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 20px;
    }

    .about-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.95rem;
      font-weight: 600;
    }

    .about-dot {
      display: inline-block;
      width: 12px;
      height: 12px;
      background-color: var(--pop-green);
      border: var(--border-width) solid var(--border-dark);
      border-radius: 50%;
      margin-top: 5px;
      flex-shrink: 0;
    }

    /* Section 3: Supported Models Tag Cloud */
    .models-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
    }

    .model-chip {
      background-color: #ffffff;
      border: var(--border-width) solid var(--border-dark);
      padding: 10px 18px;
      border-radius: 30px;
      font-weight: 700;
      font-size: 0.95rem;
      box-shadow: 3px 3px 0px #1e1e24;
      transition: transform 0.15s ease;
    }

    .model-chip:hover {
      transform: scale(1.05) rotate(-2deg);
      background-color: var(--pop-yellow);
    }

    /* Section 4: Creation Showcase */
    .creation-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .creation-card {
      background-color: #ffffff;
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 22px;
      box-shadow: var(--shadow-doodle);
    }

    .creation-tag {
      font-size: 0.75rem;
      font-weight: 800;
      padding: 3px 8px;
      background-color: var(--pop-blue);
      color: #fff;
      border: 1px solid var(--border-dark);
      border-radius: 4px;
      float: right;
    }

    /* Section 6 & 7: Process & Network */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 14px;
    }

    .process-step {
      background-color: #ffffff;
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 18px 14px;
      text-align: center;
      box-shadow: var(--shadow-doodle);
      position: relative;
    }

    .step-number {
      display: inline-block;
      width: 32px;
      height: 32px;
      line-height: 28px;
      background-color: var(--pop-pink);
      color: #fff;
      font-weight: 900;
      border: var(--border-width) solid var(--border-dark);
      border-radius: 50%;
      margin-bottom: 10px;
    }

    /* Section 8: Cases Gallery */
    .cases-gallery {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .case-card {
      background-color: #ffffff;
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-doodle);
    }

    .case-img-wrap {
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-sm);
      overflow: hidden;
      margin-bottom: 16px;
      background-color: #eee;
    }

    .ai-page-image {
      width: 100%;
      height: auto;
      object-fit: cover;
    }

    /* Section 9: Comparison Table */
    .rating-banner {
      background-color: var(--pop-yellow);
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-doodle);
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
    }

    .rating-score {
      font-size: 2.2rem;
      font-weight: 900;
    }

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

    .compare-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-md);
      overflow: hidden;
      background-color: #ffffff;
      box-shadow: var(--shadow-doodle);
    }

    .compare-table th, .compare-table td {
      padding: 16px;
      text-align: left;
      border-bottom: 1px solid var(--border-dark);
      border-right: 1px solid var(--border-dark);
      font-size: 0.95rem;
    }

    .compare-table th {
      background-color: var(--bg-color);
      font-weight: 800;
    }

    .compare-table th:last-child, .compare-table td:last-child {
      border-right: none;
    }

    .compare-table tr:last-child td {
      border-bottom: none;
    }

    .highlight-col {
      background-color: rgba(255, 243, 176, 0.3);
      font-weight: 700;
    }

    /* Section 11: Token Price Reference */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .token-card {
      background-color: #ffffff;
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-doodle);
    }

    .token-price {
      font-size: 1.6rem;
      font-weight: 900;
      color: var(--pop-pink);
      margin: 10px 0;
    }

    /* Section 13: FAQ Accordion */
    .faq-accordion {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-item {
      background-color: #ffffff;
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-doodle);
      overflow: hidden;
    }

    .faq-header {
      padding: 18px 24px;
      font-weight: 800;
      font-size: 1.05rem;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
      background-color: #ffffff;
    }

    .faq-toggle-icon {
      font-size: 1.4rem;
      transition: transform 0.2s ease;
    }

    .faq-content {
      padding: 0 24px 20px;
      font-size: 0.95rem;
      color: var(--text-muted);
      display: none;
      border-top: 1px dashed var(--border-dark);
      margin-top: 4px;
      padding-top: 16px;
    }

    .faq-item.active .faq-content {
      display: block;
    }

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

    /* Section 15: Articles / News Links */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

    .article-card {
      background-color: #ffffff;
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-doodle);
    }

    .article-link-list {
      list-style: none;
      margin-top: 10px;
    }

    .article-link-list li {
      margin-bottom: 8px;
      font-size: 0.9rem;
    }

    .article-link-list li a {
      color: var(--pop-blue);
      text-decoration: underline;
      font-weight: 600;
    }

    /* Section 17: User Reviews */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .review-card {
      background-color: #ffffff;
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 22px;
      box-shadow: var(--shadow-doodle);
    }

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

    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background-color: var(--pop-yellow);
      border: var(--border-width) solid var(--border-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
    }

    .reviewer-name {
      font-weight: 800;
      font-size: 1rem;
    }

    .reviewer-role {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .review-stars {
      color: #ff9f1c;
      font-size: 0.9rem;
      margin-bottom: 10px;
    }

    /* Section 18: Contact Form */
    .contact-layout {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 30px;
    }

    .contact-info-card {
      background-color: var(--pop-yellow);
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-doodle);
    }

    .contact-item {
      margin-bottom: 20px;
    }

    .contact-item-label {
      font-size: 0.85rem;
      font-weight: 800;
      text-transform: uppercase;
    }

    .contact-item-value {
      font-size: 1.1rem;
      font-weight: 700;
      margin-top: 4px;
    }

    .qr-code-box {
      margin-top: 20px;
      background-color: #ffffff;
      padding: 14px;
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-sm);
      display: inline-block;
      text-align: center;
    }

    .qr-code-box img {
      max-width: 140px;
      margin: 0 auto 8px;
    }

    .contact-form-card {
      background-color: #ffffff;
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-doodle);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 14px;
      font-family: inherit;
      font-size: 0.95rem;
      border: var(--border-width) solid var(--border-dark);
      border-radius: var(--radius-sm);
      background-color: var(--bg-color);
      outline: none;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      background-color: #ffffff;
      border-color: var(--pop-blue);
      box-shadow: 2px 2px 0px #1e1e24;
    }

    .form-textarea {
      resize: vertical;
      min-height: 110px;
    }

    /* Footer - Color Safe Standards */
    .site-footer {
      background-color: #1a1a24;
      color: #ffffff;
      border-top: var(--border-width) solid var(--border-dark);
      padding: 50px 0 25px;
    }

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

    .footer-col-title {
      font-size: 1.1rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--pop-yellow);
    }

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

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

    .footer-links a {
      color: #dddddd;
      font-size: 0.9rem;
    }

    .footer-links a:hover {
      color: var(--pop-yellow);
    }

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

    .friend-links-box a {
      display: inline-block;
      padding: 4px 10px;
      background-color: #2a2a36;
      color: #ffffff;
      border-radius: 4px;
      font-size: 0.85rem;
      border: 1px solid #444;
    }

    .friend-links-box a:hover {
      background-color: var(--pop-blue);
      color: #fff;
    }

    .footer-bottom {
      text-align: center;
      padding-top: 25px;
      border-top: 1px solid #333344;
      font-size: 0.85rem;
      color: #aaaaaa;
    }

    /* Floating Widget */
    .floating-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-color: var(--pop-yellow);
      border: var(--border-width) solid var(--border-dark);
      box-shadow: var(--shadow-doodle);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      cursor: pointer;
      transition: transform 0.2s ease;
    }

    .float-btn:hover {
      transform: scale(1.1);
    }

    /* Media Queries */
    @media (max-width: 992px) {
      .hero-stats-grid, .grid-4, .creation-grid, .token-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-color);
        border-bottom: var(--border-width) solid var(--border-dark);
        flex-direction: column;
        padding: 16px 0;
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .hero-title {
        font-size: 2rem;
      }
      .grid-3, .grid-2, .cases-gallery, .contact-layout, .hero-stats-grid, .reviews-grid, .creation-grid {
        grid-template-columns: 1fr;
      }
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .rating-banner {
        flex-direction: column;
        gap: 16px;
        text-align: center;
      }
    }