/* CSS Reset & Variables - 多彩涂鸦风格 (Colorful Graffiti Style) */
    :root {
      --primary: #ff2a85;
      --secondary: #00e5ff;
      --accent-yellow: #ffd166;
      --accent-green: #06d6a0;
      --accent-purple: #8338ec;
      --bg-light: #faf8f5;
      --bg-white: #ffffff;
      --text-dark: #1e1e24;
      --text-sub: #4a4e69;
      --border-dark: #1e1e24;
      --shadow-graffiti: 4px 4px 0px #1e1e24;
      --shadow-hover: 7px 7px 0px #1e1e24;
      --radius-doodle: 16px 6px 20px 8px;
      --radius-std: 12px;
      --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
      background-color: var(--bg-light);
      color: var(--text-dark);
      font-family: var(--font-base);
      line-height: 1.6;
    }

    body {
      overflow-x: hidden;
      background-image: radial-gradient(#d5daf0 1.2px, transparent 1.2px);
      background-size: 24px 24px;
    }

    /* Outer Main Layout Alignments */
    .site-header,
    .main-content section,
    .site-footer {
      width: 100%;
    }

    .container {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
      width: 100%;
      box-sizing: border-box;
    }

    /* Doodle Typography & Utility Badges */
    .graffiti-badge {
      display: inline-block;
      background-color: var(--accent-yellow);
      color: var(--text-dark);
      font-weight: 700;
      font-size: 0.85rem;
      padding: 4px 12px;
      border: 2px solid var(--border-dark);
      box-shadow: 2px 2px 0px var(--border-dark);
      border-radius: 20px;
      transform: rotate(-1.5deg);
      margin-bottom: 12px;
    }

    .graffiti-badge.cyan { background-color: var(--secondary); }
    .graffiti-badge.pink { background-color: var(--primary); color: #fff; }
    .graffiti-badge.green { background-color: var(--accent-green); }

    .section-title-wrap {
      text-align: center;
      margin-bottom: 45px;
    }

    .section-title {
      font-size: 2.1rem;
      color: var(--text-dark);
      font-weight: 800;
      display: inline-block;
      position: relative;
    }

    .section-title::after {
      content: '';
      display: block;
      height: 8px;
      background: var(--secondary);
      margin-top: 4px;
      border-radius: 4px;
      border: 1.5px solid var(--border-dark);
    }

    .section-desc {
      color: var(--text-sub);
      font-size: 1rem;
      margin-top: 10px;
    }

    /* Button Styles */
    .btn-graffiti {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      font-size: 1rem;
      font-weight: 700;
      text-decoration: none;
      color: var(--text-dark);
      background-color: var(--primary);
      color: #fff;
      border: 2.5px solid var(--border-dark);
      border-radius: 12px;
      box-shadow: var(--shadow-graffiti);
      transition: all 0.2s ease;
      cursor: pointer;
    }

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

    .btn-graffiti.btn-yellow {
      background-color: var(--accent-yellow);
      color: var(--text-dark);
    }

    .btn-graffiti.btn-cyan {
      background-color: var(--secondary);
      color: var(--text-dark);
    }

    .btn-graffiti.btn-outline {
      background-color: var(--bg-white);
      color: var(--text-dark);
    }

    /* Header Nav */
    .site-header {
      background-color: rgba(255, 255, 255, 0.95);
      border-bottom: 2.5px solid var(--border-dark);
      position: sticky;
      top: 0;
      z-index: 1000;
      backdrop-filter: blur(8px);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

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

    .ai-page-logo {
      max-height: 44px;
      width: auto;
    }

    .brand-text {
      font-weight: 900;
      font-size: 1.4rem;
      color: var(--text-dark);
      letter-spacing: -0.5px;
    }

    .nav-links-wrap {
      display: flex;
      align-items: center;
    }

    /* Explicit Gap: 0 required for .nav-links */
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li a {
      text-decoration: none;
      color: var(--text-dark);
      font-weight: 600;
      font-size: 0.95rem;
      padding: 8px 14px;
      display: block;
      border-radius: 8px;
      transition: background-color 0.2s, color 0.2s;
    }

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

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

    .nav-toggle {
      display: none;
      background: none;
      border: 2px solid var(--border-dark);
      border-radius: 8px;
      padding: 6px 10px;
      font-size: 1.2rem;
      cursor: pointer;
    }

    /* Section Global Cards */
    .graffiti-card {
      background: var(--bg-white);
      border: 2.5px solid var(--border-dark);
      border-radius: var(--radius-doodle);
      box-shadow: var(--shadow-graffiti);
      padding: 26px;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      height: 100%;
      display: flex;
      flex-direction: column;
    }

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

    /* 1. Hero Section (NO IMAGES PER RULE) */
    .hero-section {
      padding: 65px 0 50px 0;
      background: linear-gradient(135deg, #fff 0%, #fff8fa 50%, #f0fcff 100%);
      border-bottom: 2.5px solid var(--border-dark);
      position: relative;
    }

    .hero-wrapper {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
    }

    .hero-title {
      font-size: 2.6rem;
      line-height: 1.25;
      font-weight: 900;
      color: var(--text-dark);
      max-width: 900px;
      margin: 15px 0 20px 0;
      letter-spacing: -0.5px;
    }

    .hero-title .highlight {
      background: linear-gradient(120deg, var(--accent-yellow) 0%, var(--accent-yellow) 100%);
      padding: 0 8px;
      border-radius: 6px;
      border: 2px solid var(--border-dark);
      display: inline-block;
      transform: rotate(-1deg);
    }

    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-sub);
      max-width: 820px;
      margin-bottom: 35px;
      line-height: 1.7;
    }

    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      justify-content: center;
      margin-bottom: 45px;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      width: 100%;
      margin-top: 20px;
    }

    .hero-stat-card {
      background: var(--bg-white);
      border: 2px solid var(--border-dark);
      box-shadow: 3px 3px 0px var(--border-dark);
      border-radius: 12px;
      padding: 18px;
      text-align: center;
    }

    .stat-number {
      font-size: 2rem;
      font-weight: 900;
      color: var(--primary);
    }

    .stat-label {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-sub);
    }

    /* 2. Platform Introduction / About Us */
    .about-section {
      padding: 70px 0;
    }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 35px;
      align-items: stretch;
    }

    .about-content-box {
      background: var(--bg-white);
      border: 2.5px solid var(--border-dark);
      box-shadow: var(--shadow-graffiti);
      border-radius: var(--radius-doodle);
      padding: 35px;
    }

    .feature-check-list {
      list-style: none;
      margin-top: 20px;
    }

    .feature-check-list li {
      position: relative;
      padding-left: 28px;
      margin-bottom: 12px;
      font-weight: 600;
      color: var(--text-dark);
    }

    .feature-check-list li::before {
      content: '✓';
      position: absolute;
      left: 0;
      top: 0;
      color: var(--primary);
      font-weight: 900;
      font-size: 1.1rem;
    }

    /* 3. AIGC Services & Models */
    .services-section {
      padding: 70px 0;
      background: #f4f9fc;
      border-top: 2.5px solid var(--border-dark);
      border-bottom: 2.5px solid var(--border-dark);
    }

    .models-cloud-box {
      background: var(--bg-white);
      border: 2.5px solid var(--border-dark);
      box-shadow: var(--shadow-graffiti);
      border-radius: 16px;
      padding: 24px;
      margin-top: 30px;
      text-align: center;
    }

    .model-tags-wrapper {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 15px;
    }

    .model-pill {
      background: #f0f2f8;
      border: 1.5px solid var(--border-dark);
      padding: 5px 14px;
      border-radius: 20px;
      font-weight: 700;
      font-size: 0.85rem;
      color: var(--text-dark);
    }

    .model-pill.hot {
      background: var(--accent-yellow);
    }

    .model-pill.vip {
      background: var(--secondary);
    }

    /* 4. One-stop Creation Scenarios */
    .scenarios-section {
      padding: 70px 0;
    }

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

    .scenario-icon {
      font-size: 2rem;
      margin-bottom: 12px;
    }

    .scenario-card h3 {
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .scenario-card p {
      color: var(--text-sub);
      font-size: 0.92rem;
      flex-grow: 1;
    }

    /* 5. Industry Solutions */
    .solutions-section {
      padding: 70px 0;
      background: #fff;
      border-top: 2.5px solid var(--border-dark);
      border-bottom: 2.5px solid var(--border-dark);
    }

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

    /* 6. Service Network */
    .network-section {
      padding: 70px 0;
    }

    .network-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    /* 7. Standard Process */
    .process-section {
      padding: 70px 0;
      background: #fff8f0;
      border-top: 2.5px solid var(--border-dark);
      border-bottom: 2.5px solid var(--border-dark);
    }

    .process-steps {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
    }

    .process-step-card {
      background: var(--bg-white);
      border: 2px solid var(--border-dark);
      border-radius: 12px;
      padding: 20px 16px;
      text-align: center;
      box-shadow: 3px 3px 0px var(--border-dark);
      position: relative;
    }

    .step-num {
      width: 36px;
      height: 36px;
      background: var(--primary);
      color: #fff;
      font-weight: 900;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 12px auto;
      border: 2px solid var(--border-dark);
    }

    /* 8. Cases Center */
    .cases-section {
      padding: 70px 0;
    }

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

    .case-card-img-wrap {
      border: 2px solid var(--border-dark);
      border-radius: 8px;
      overflow: hidden;
      margin-bottom: 16px;
      background: #eee;
    }

    .case-card-img-wrap img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
    }

    /* 9. Comparison & Rating Section */
    .comparison-section {
      padding: 70px 0;
      background: #fdf5f8;
      border-top: 2.5px solid var(--border-dark);
      border-bottom: 2.5px solid var(--border-dark);
    }

    .rating-banner {
      background: var(--bg-white);
      border: 2.5px solid var(--border-dark);
      box-shadow: var(--shadow-graffiti);
      border-radius: 16px;
      padding: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
    }

    .rating-stars {
      color: #ffb703;
      font-size: 1.8rem;
    }

    .rating-score {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--primary);
    }

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

    .comparison-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      background: var(--bg-white);
      border: 2.5px solid var(--border-dark);
      border-radius: 12px;
      overflow: hidden;
    }

    .comparison-table th,
    .comparison-table td {
      padding: 16px;
      border-bottom: 1px solid #e0e0e0;
      border-right: 1px solid #e0e0e0;
      text-align: center;
    }

    .comparison-table th {
      background: #f0f2f8;
      font-weight: 800;
      color: var(--text-dark);
    }

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

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

    .comparison-table td.highlight-col {
      background: #fff0f5;
      font-weight: 700;
    }

    /* 10. Requirements Matching & Form */
    .matching-section {
      padding: 70px 0;
    }

    .matching-flex {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 35px;
    }

    .graffiti-form {
      background: var(--bg-white);
      border: 2.5px solid var(--border-dark);
      box-shadow: var(--shadow-graffiti);
      border-radius: var(--radius-doodle);
      padding: 30px;
    }

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

    .form-group label {
      display: block;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-dark);
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      font-size: 0.95rem;
      border: 2px solid var(--border-dark);
      border-radius: 8px;
      background: #fafafa;
      font-family: inherit;
    }

    .form-control:focus {
      outline: none;
      background: #fff;
      border-color: var(--primary);
    }

    /* 11. Token Price Comparison */
    .token-section {
      padding: 70px 0;
      background: #f0fcff;
      border-top: 2.5px solid var(--border-dark);
      border-bottom: 2.5px solid var(--border-dark);
    }

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

    /* 12 & 14. Help Center & Encyclopedia */
    .help-section {
      padding: 70px 0;
    }

    .help-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }

    /* 13. FAQ Section */
    .faq-section {
      padding: 70px 0;
      background: var(--bg-white);
      border-top: 2.5px solid var(--border-dark);
      border-bottom: 2.5px solid var(--border-dark);
    }

    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      border: 2px solid var(--border-dark);
      border-radius: 12px;
      box-shadow: 3px 3px 0px var(--border-dark);
      margin-bottom: 16px;
      background: var(--bg-white);
      overflow: hidden;
    }

    .faq-question {
      padding: 18px 22px;
      font-weight: 800;
      font-size: 1.05rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #fafafa;
    }

    .faq-toggle-icon {
      font-weight: 900;
      font-size: 1.2rem;
      transition: transform 0.2s;
    }

    .faq-answer {
      padding: 0 22px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      color: var(--text-sub);
    }

    .faq-item.active .faq-answer {
      padding: 18px 22px;
      max-height: 250px;
      border-top: 1.5px dashed #ddd;
    }

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

    /* 15. Industry News & Latest Articles */
    .news-section {
      padding: 70px 0;
    }

    .news-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 30px;
    }

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

    .articles-links-list li {
      margin-bottom: 12px;
      padding-bottom: 12px;
      border-bottom: 1px dashed #ccc;
    }

    .articles-links-list a {
      color: var(--text-dark);
      text-decoration: none;
      font-weight: 700;
      transition: color 0.2s;
    }

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

    /* 15.5 User Reviews Section */
    .reviews-section {
      padding: 70px 0;
      background: #fff8fc;
      border-top: 2.5px solid var(--border-dark);
      border-bottom: 2.5px solid var(--border-dark);
    }

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

    .review-user-info {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 16px;
    }

    .avatar-badge {
      width: 44px;
      height: 44px;
      background: var(--accent-yellow);
      border: 2px solid var(--border-dark);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
    }

    /* 17. Partner / Franchise Program */
    .partner-section {
      padding: 70px 0;
      background: linear-gradient(135deg, #eaf9ff 0%, #fff7eb 100%);
      border-bottom: 2.5px solid var(--border-dark);
    }

    /* 16. Contact Us Section */
    .contact-section {
      padding: 70px 0;
      background: var(--bg-white);
    }

    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 35px;
    }

    .qr-box {
      text-align: center;
      background: #f8f9fa;
      border: 2px solid var(--border-dark);
      border-radius: 12px;
      padding: 20px;
      margin-top: 15px;
    }

    .qr-box img {
      max-width: 160px;
      height: auto;
      border-radius: 8px;
      border: 1px solid #ccc;
    }

    /* Banner Promo Block */
    .promo-banners-wrap {
      display: flex;
      gap: 20px;
      margin-top: 30px;
    }

    .promo-banners-wrap img {
      border: 2px solid var(--border-dark);
      border-radius: 12px;
      box-shadow: 3px 3px 0px var(--border-dark);
    }

    /* Site Footer Alignment & Dark Colors */
    .site-footer {
      background-color: #1a1d20;
      color: #e0e0e0;
      padding: 50px 0 30px 0;
      border-top: 3px solid var(--border-dark);
    }

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

    .footer-col h4 {
      color: #fff;
      font-size: 1.15rem;
      margin-bottom: 18px;
      position: relative;
      display: inline-block;
    }

    .footer-col h4::after {
      content: '';
      display: block;
      width: 100%;
      height: 3px;
      background: var(--primary);
      margin-top: 4px;
    }

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

    .footer-links-list li {
      margin-bottom: 8px;
    }

    .footer-links-list a {
      color: #b0b5c0;
      text-decoration: none;
      transition: color 0.2s;
    }

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

    .friendship-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 10px;
    }

    .friendship-links a {
      color: #ffd166;
      text-decoration: none;
      font-size: 0.9rem;
      background: rgba(255, 255, 255, 0.08);
      padding: 4px 10px;
      border-radius: 6px;
      border: 1px solid rgba(255,255,255,0.15);
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding-top: 25px;
      text-align: center;
      font-size: 0.88rem;
      color: #888e9b;
    }

    .footer-bottom a {
      color: #b0b5c0;
      text-decoration: none;
    }

    /* Floating Contact Widget & Back to Top */
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      background: var(--accent-yellow);
      color: var(--text-dark);
      border: 2px solid var(--border-dark);
      border-radius: 50%;
      box-shadow: 3px 3px 0px var(--border-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      text-decoration: none;
      cursor: pointer;
      transition: transform 0.2s;
    }

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

    /* Media Queries for Mobile Responsiveness */
    @media (max-width: 992px) {
      .hero-stats-grid,
      .scenarios-grid,
      .solutions-grid,
      .network-cards,
      .cases-grid,
      .token-grid,
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .process-steps {
        grid-template-columns: repeat(3, 1fr);
      }

      .about-grid,
      .matching-flex,
      .contact-grid,
      .news-grid,
      .help-grid,
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links-wrap {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #fff;
        border-bottom: 2.5px solid var(--border-dark);
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
      }

      .nav-links-wrap.active {
        display: block;
      }

      .nav-links {
        flex-direction: column;
        align-items: flex-start;
      }

      .nav-links li {
        width: 100%;
      }

      .nav-links li a {
        padding: 10px 0;
      }

      .nav-toggle {
        display: block;
      }

      .hero-title {
        font-size: 1.8rem;
      }

      .hero-stats-grid,
      .scenarios-grid,
      .solutions-grid,
      .network-cards,
      .cases-grid,
      .token-grid,
      .reviews-grid,
      .process-steps {
        grid-template-columns: 1fr;
      }

      .rating-banner {
        flex-direction: column;
        gap: 15px;
        text-align: center;
      }
    }