/* CSS Standard Reset & Base Typography */
    :root {
      --primary-color: #6366f1;
      --primary-dark: #4f46e5;
      --accent-graffiti-1: #ec4899;
      --accent-graffiti-2: #8b5cf6;
      --accent-graffiti-3: #10b981;
      --accent-yellow: #f59e0b;
      --accent-cyan: #06b6d4;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 24px;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(99, 102, 241, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
      --shadow-graffiti: 4px 4px 0px #0f172a;
      --font-family: system-ui, -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 {
      font-family: var(--font-family);
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

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

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

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

    /* Container Standard */
    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* Header & Navigation Style */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 2px solid var(--text-main);
      box-shadow: 0 4px 12px rgba(0,0,0,0.03);
    }

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

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

    .ai-page-logo {
      height: 42px;
      width: auto;
      object-fit: contain;
    }

    .brand-title {
      font-weight: 800;
      font-size: 1.35rem;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

    /* Mandatory CSS rule: gap set to 0 */
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

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

    .nav-links li a:hover,
    .nav-links li .ai-page-home-link:hover {
      background-color: rgba(99, 102, 241, 0.08);
      color: var(--primary-color);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 700;
      border-radius: var(--radius-sm);
      border: 2px solid var(--text-main);
      cursor: pointer;
      transition: transform 0.15s ease, box-shadow 0.15s ease;
      text-align: center;
      white-space: nowrap;
    }

    .btn-primary {
      background-color: var(--primary-color);
      color: #ffffff;
      box-shadow: 3px 3px 0px var(--text-main);
    }

    .btn-primary:hover {
      transform: translate(-2px, -2px);
      box-shadow: 5px 5px 0px var(--text-main);
      color: #ffffff;
    }

    .btn-secondary {
      background-color: #ffffff;
      color: var(--text-main);
      box-shadow: 3px 3px 0px var(--text-main);
    }

    .btn-secondary:hover {
      background-color: #f1f5f9;
      transform: translate(-2px, -2px);
      box-shadow: 5px 5px 0px var(--text-main);
      color: var(--text-main);
    }

    .btn-graffiti {
      background: linear-gradient(135deg, #ec4899 0%, #8b5cf6 100%);
      color: #ffffff !important;
      box-shadow: 3px 3px 0px var(--text-main);
    }

    .btn-graffiti:hover {
      transform: translate(-2px, -2px);
      box-shadow: 5px 5px 0px var(--text-main);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: 2px solid var(--text-main);
      padding: 6px 10px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      font-size: 1.2rem;
    }

    /* Section Tag Badge & Titles */
    .section-padding {
      padding: 80px 0;
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 50px auto;
    }

    .graffiti-badge {
      display: inline-block;
      padding: 4px 14px;
      background-color: #fef08a;
      color: #0f172a;
      font-weight: 800;
      font-size: 0.85rem;
      border: 2px solid var(--text-main);
      border-radius: 20px;
      box-shadow: 2px 2px 0px var(--text-main);
      margin-bottom: 14px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 1.1rem;
      color: var(--text-muted);
    }

    /* SECTION 1: HERO SECTION (Strict rule: NO IMAGES inside Hero) */
    .hero-section {
      background: radial-gradient(circle at 10% 20%, rgba(236, 72, 153, 0.08) 0%, rgba(99, 102, 241, 0.05) 90%), #ffffff;
      border-bottom: 2px solid var(--text-main);
      padding: 90px 0 80px 0;
      position: relative;
    }

    .hero-content {
      max-width: 900px;
      margin: 0 auto;
      text-align: center;
    }

    .hero-h1 {
      font-size: 2.6rem;
      font-weight: 900;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .hero-h1 span.highlight {
      background: linear-gradient(120deg, #fbcfe8 0%, #fed7aa 100%);
      padding: 0 8px;
      border-radius: 4px;
      border: 2px solid var(--text-main);
      box-shadow: 2px 2px 0px var(--text-main);
      display: inline-block;
    }

    .hero-subtext {
      font-size: 1.25rem;
      color: var(--text-muted);
      margin-bottom: 32px;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }

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

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 30px;
    }

    .stat-card {
      background-color: #ffffff;
      border: 2px solid var(--text-main);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-graffiti);
      text-align: center;
    }

    .stat-card:nth-child(1) { background-color: #eff6ff; }
    .stat-card:nth-child(2) { background-color: #f0fdf4; }
    .stat-card:nth-child(3) { background-color: #fefce8; }
    .stat-card:nth-child(4) { background-color: #faf5ff; }

    .stat-number {
      font-size: 2rem;
      font-weight: 900;
      color: var(--text-main);
      line-height: 1.1;
      margin-bottom: 6px;
    }

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

    /* SECTION 2: ABOUT / PLATFORM INTRO */
    .about-section {
      background-color: var(--bg-main);
    }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .graffiti-box {
      background: #ffffff;
      border: 2px solid var(--text-main);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-graffiti);
    }

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

    .about-feature-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      margin-bottom: 16px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .check-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 24px;
      height: 24px;
      background-color: #10b981;
      color: #ffffff;
      border: 1.5px solid var(--text-main);
      border-radius: 50%;
      font-size: 0.8rem;
      font-weight: 900;
      flex-shrink: 0;
      margin-top: 2px;
    }

    /* SECTION 3: AIGC SERVICES & SUPPORTED MODELS */
    .models-chip-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 24px;
    }

    .model-chip {
      background: #ffffff;
      border: 1.5px solid var(--text-main);
      padding: 6px 14px;
      border-radius: 30px;
      font-weight: 700;
      font-size: 0.88rem;
      box-shadow: 2px 2px 0px var(--text-main);
      transition: all 0.2s ease;
    }

    .model-chip:hover {
      transform: translateY(-2px);
      background-color: #e0e7ff;
    }

    /* SECTION 4: ONE-STOP CREATION SCENARIOS */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .scenario-card {
      background: #ffffff;
      border: 2px solid var(--text-main);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-graffiti);
      transition: transform 0.2s ease;
    }

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

    .scenario-card-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .scenario-icon {
      width: 44px;
      height: 44px;
      border: 2px solid var(--text-main);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: 900;
      box-shadow: 2px 2px 0px var(--text-main);
    }

    .sc-bg-1 { background-color: #fce7f3; }
    .sc-bg-2 { background-color: #e0e7ff; }
    .sc-bg-3 { background-color: #dcfce7; }
    .sc-bg-4 { background-color: #fef9c3; }
    .sc-bg-5 { background-color: #e0f2fe; }
    .sc-bg-6 { background-color: #fae8ff; }

    .scenario-title {
      font-size: 1.2rem;
      font-weight: 800;
      color: var(--text-main);
    }

    .scenario-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* SECTION 5 & 6: INDUSTRY & SERVICE NETWORK */
    .network-bar {
      background: linear-gradient(90deg, #ec4899, #8b5cf6, #3b82f6, #10b981);
      border: 2px solid var(--text-main);
      border-radius: var(--radius-md);
      padding: 30px;
      color: #ffffff;
      box-shadow: var(--shadow-graffiti);
      text-align: center;
    }

    .network-title {
      font-size: 1.5rem;
      font-weight: 900;
      margin-bottom: 10px;
      color: #ffffff;
    }

    /* SECTION 7: WORKFLOW STEPS */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-card {
      background: #ffffff;
      border: 2px solid var(--text-main);
      border-radius: var(--radius-md);
      padding: 24px 18px;
      box-shadow: var(--shadow-graffiti);
      text-align: center;
      position: relative;
    }

    .step-num {
      display: inline-block;
      width: 36px;
      height: 36px;
      line-height: 32px;
      border: 2px solid var(--text-main);
      border-radius: 50%;
      background-color: #fef08a;
      font-weight: 900;
      font-size: 1.1rem;
      margin-bottom: 12px;
      box-shadow: 2px 2px 0px var(--text-main);
    }

    .step-title {
      font-size: 1.1rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* SECTION 8: CASE SHOWCASE (MEDIA BANNERS) */
    .cases-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }

    .case-card {
      background: #ffffff;
      border: 2px solid var(--text-main);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-graffiti);
    }

    .case-img-wrap {
      border-bottom: 2px solid var(--text-main);
      overflow: hidden;
      background-color: #f1f5f9;
    }

    .case-img-wrap img {
      width: 100%;
      height: 240px;
      object-fit: cover;
      transition: transform 0.3s ease;
    }

    .case-card:hover .case-img-wrap img {
      transform: scale(1.03);
    }

    .case-info {
      padding: 20px;
    }

    .case-title {
      font-size: 1.15rem;
      font-weight: 800;
      margin-bottom: 6px;
    }

    .case-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* SECTION 9: COMPARISON EVALUATION */
    .rating-banner {
      background-color: #fef3c7;
      border: 2px solid var(--text-main);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-graffiti);
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
      flex-wrap: wrap;
      gap: 16px;
    }

    .rating-score {
      font-size: 2.4rem;
      font-weight: 900;
      color: #d97706;
      line-height: 1;
    }

    .rating-stars {
      color: #f59e0b;
      font-size: 1.5rem;
      letter-spacing: 2px;
    }

    .table-responsive {
      overflow-x: auto;
      border: 2px solid var(--text-main);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-graffiti);
      background-color: #ffffff;
    }

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

    .compare-table th, 
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1.5px solid var(--border-color);
    }

    .compare-table th {
      background-color: #f8fafc;
      font-weight: 800;
      font-size: 1rem;
      border-bottom: 2px solid var(--text-main);
    }

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

    .compare-table td.highlight-col {
      background-color: #f0fdf4;
      font-weight: 700;
      color: #15803d;
    }

    /* SECTION 10: TOKEN PRICE REFERENCE */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .token-card {
      background: #ffffff;
      border: 2px solid var(--text-main);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-graffiti);
    }

    .token-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1.5px dashed var(--border-color);
      padding-bottom: 10px;
      margin-bottom: 12px;
    }

    .token-name {
      font-weight: 800;
      font-size: 1.1rem;
    }

    .token-price {
      font-size: 1.2rem;
      font-weight: 900;
      color: #2563eb;
    }

    /* SECTION 11: USER REVIEWS (6 TESTIMONIALS) */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      border: 2px solid var(--text-main);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-graffiti);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 0.95rem;
      color: var(--text-main);
      margin-bottom: 20px;
      line-height: 1.6;
    }

    .reviewer-profile {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1.5px solid var(--border-color);
      padding-top: 14px;
    }

    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      border: 1.5px solid var(--text-main);
      background-color: #e0e7ff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: var(--primary-dark);
    }

    .reviewer-info h4 {
      font-size: 0.95rem;
      font-weight: 800;
    }

    .reviewer-info p {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* SECTION 12: FAQ ACCORDION (10+ Items) */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #ffffff;
      border: 2px solid var(--text-main);
      border-radius: var(--radius-md);
      box-shadow: 3px 3px 0px var(--text-main);
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      padding: 18px 22px;
      text-align: left;
      background: none;
      border: none;
      font-size: 1.05rem;
      font-weight: 800;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .faq-question::after {
      content: '+';
      font-size: 1.4rem;
      font-weight: 900;
      color: var(--primary-color);
    }

    .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-color: #f8fafc;
      border-top: 0px solid var(--border-color);
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 18px 22px;
      border-top-width: 1.5px;
    }

    /* SECTION 13: LATEST ARTICLES & KNOWLEDGE BASE */
    .articles-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .article-card {
      background: #ffffff;
      border: 2px solid var(--text-main);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-graffiti);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .article-title {
      font-size: 1.05rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

    /* SECTION 14: FRANCHISE & AFFILIATE */
    .franchise-banner {
      background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
      border: 2px solid var(--text-main);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-graffiti);
      text-align: center;
    }

    /* SECTION 15: FORM & CONTACT US */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }

    .contact-info-card {
      background: #ffffff;
      border: 2px solid var(--text-main);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-graffiti);
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 20px;
    }

    .contact-icon {
      width: 44px;
      height: 44px;
      background-color: #dbeafe;
      border: 1.5px solid var(--text-main);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
    }

    .form-card {
      background: #ffffff;
      border: 2px solid var(--text-main);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-graffiti);
    }

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

    .form-label {
      display: block;
      font-weight: 700;
      font-size: 0.95rem;
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      font-size: 0.95rem;
      font-family: inherit;
      border: 2px solid var(--text-main);
      border-radius: var(--radius-sm);
      background-color: #ffffff;
      outline: none;
      transition: border-color 0.2s;
    }

    .form-control:focus {
      border-color: var(--primary-color);
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
    }

    /* FOOTER & FRIENDLY LINKS */
    .site-footer {
      background-color: #0f172a;
      color: #f8fafc;
      border-top: 3px solid var(--text-main);
      padding: 60px 0 30px 0;
    }

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

    .footer-col h4 {
      color: #ffffff;
      font-size: 1.1rem;
      font-weight: 800;
      margin-bottom: 18px;
      border-bottom: 2px solid #334155;
      padding-bottom: 8px;
    }

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

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

    .footer-links a {
      color: #94a3b8;
    }

    .footer-links a:hover {
      color: #ffffff;
    }

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

    .friend-links-wrap a {
      background-color: #1e293b;
      color: #cbd5e1;
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 0.85rem;
      border: 1px solid #334155;
    }

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

    .footer-bottom {
      border-top: 1px solid #334155;
      padding-top: 24px;
      text-align: center;
      color: #94a3b8;
      font-size: 0.9rem;
    }

    /* FLOATING CUSTOMER SERVICE WIDGET */
    .floating-widget {
      position: fixed;
      bottom: 30px;
      right: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      border: 2px solid var(--text-main);
      background-color: #ffffff;
      box-shadow: 3px 3px 0px var(--text-main);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 1.2rem;
      cursor: pointer;
      transition: transform 0.2s ease;
      position: relative;
    }

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

    .qr-popover {
      position: absolute;
      right: 64px;
      bottom: 0;
      background: #ffffff;
      border: 2px solid var(--text-main);
      border-radius: var(--radius-md);
      padding: 14px;
      box-shadow: var(--shadow-graffiti);
      display: none;
      width: 170px;
      text-align: center;
    }

    .float-btn-qr:hover .qr-popover {
      display: block;
    }

    /* Responsive Breakpoints */
    @media (max-width: 1024px) {
      .hero-stats-grid,
      .scenario-grid,
      .steps-grid,
      .reviews-grid,
      .token-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background-color: #ffffff;
        border-bottom: 2px solid var(--text-main);
        padding: 20px;
        gap: 8px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
      }

      .nav-links.active {
        display: flex;
      }

      .mobile-menu-btn {
        display: block;
      }

      .hero-h1 {
        font-size: 1.8rem;
      }

      .hero-stats-grid,
      .scenario-grid,
      .steps-grid,
      .cases-grid,
      .reviews-grid,
      .articles-grid,
      .contact-wrapper,
      .about-grid,
      .token-grid {
        grid-template-columns: 1fr;
      }

      .footer-grid {
        grid-template-columns: 1fr;
      }
    }