/* CSS Standard Reset & Vibrant Graffiti Enterprise Theme */
    :root {
      --primary: #2563eb;
      --primary-dark: #1d4ed8;
      --accent-yellow: #ffd166;
      --accent-pink: #ff477e;
      --accent-cyan: #06d6a0;
      --accent-purple: #7209b7;
      --bg-base: #faf8f5;
      --bg-card: #ffffff;
      --text-dark: #1e293b;
      --text-muted: #475569;
      --border-color: #e2e8f0;
      --graffiti-border: 2px solid #1e293b;
      --graffiti-shadow: 4px 4px 0px #1e293b;
      --graffiti-shadow-hover: 6px 6px 0px #1e293b;
      --container-width: 1200px;
      --radius: 12px;
      --radius-fun: 16px 4px 18px 6px;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-dark);
      line-height: 1.6;
    }

    body {
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 10% 20%, rgba(255, 209, 102, 0.15) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(6, 214, 160, 0.15) 0%, transparent 20%),
        radial-gradient(circle at 50% 50%, rgba(255, 71, 126, 0.08) 0%, transparent 40%);
      background-attachment: fixed;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

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

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

    /* Header & Navigation */
    .header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(10px);
      border-bottom: var(--graffiti-border);
      box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    }

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

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

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

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

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0; /* Strictly set gap to 0 as required */
      list-style: none;
    }

    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-weight: 600;
      font-size: 0.95rem;
      color: var(--text-dark);
      transition: all 0.2s ease;
      border-radius: 6px;
    }

    .nav-links li a:hover {
      background-color: var(--accent-yellow);
      color: var(--text-dark);
      transform: translateY(-1px);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-weight: 700;
      font-size: 0.95rem;
      border-radius: 8px;
      border: var(--graffiti-border);
      cursor: pointer;
      transition: all 0.2s ease;
      box-shadow: var(--graffiti-shadow);
      white-space: nowrap;
    }

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

    .btn-primary:hover {
      background-color: #ffca43;
      box-shadow: var(--graffiti-shadow-hover);
      transform: translate(-2px, -2px);
    }

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

    .btn-pink:hover {
      background-color: #f0336b;
      box-shadow: var(--graffiti-shadow-hover);
      transform: translate(-2px, -2px);
    }

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

    .btn-cyan:hover {
      background-color: #05be8d;
      box-shadow: var(--graffiti-shadow-hover);
      transform: translate(-2px, -2px);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: var(--graffiti-border);
      padding: 6px 12px;
      border-radius: 6px;
      font-size: 1.2rem;
      cursor: pointer;
    }

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

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

    .section-badge {
      display: inline-block;
      padding: 6px 16px;
      background-color: var(--accent-pink);
      color: #fff;
      font-weight: 700;
      font-size: 0.85rem;
      border-radius: 20px;
      border: var(--graffiti-border);
      box-shadow: 2px 2px 0px #1e293b;
      margin-bottom: 12px;
      text-transform: uppercase;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--text-dark);
      line-height: 1.3;
      margin-bottom: 14px;
    }

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

    /* Graffiti Styling Accents */
    .graffiti-card {
      background: var(--bg-card);
      border: var(--graffiti-border);
      box-shadow: var(--graffiti-shadow);
      border-radius: var(--radius-fun);
      padding: 24px;
      transition: all 0.25s ease;
    }

    .graffiti-card:hover {
      box-shadow: var(--graffiti-shadow-hover);
      transform: translate(-3px, -3px);
    }

    /* Section 1: Hero (NO IMAGES ALLOWED HERE) */
    .hero-section {
      padding: 80px 0 60px;
      background: linear-gradient(135deg, #ffffff 0%, #f4f6f9 100%);
      border-bottom: var(--graffiti-border);
      text-align: center;
    }

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

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

    .tag-pill {
      padding: 6px 14px;
      background: #ffffff;
      border: var(--graffiti-border);
      font-size: 0.85rem;
      font-weight: 700;
      border-radius: 30px;
      box-shadow: 2px 2px 0px #1e293b;
    }

    .tag-pill.yellow { background: var(--accent-yellow); }
    .tag-pill.cyan { background: var(--accent-cyan); }
    .tag-pill.pink { background: var(--accent-pink); color: #fff; }

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

    .hero-title span {
      background: linear-gradient(120deg, transparent 50%, var(--accent-yellow) 50%);
      padding: 0 6px;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      margin-bottom: 32px;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }

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

    .btn-hero-main {
      font-size: 1.1rem;
      padding: 14px 36px;
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }

    .stat-card {
      background: #ffffff;
      border: var(--graffiti-border);
      box-shadow: var(--graffiti-shadow);
      border-radius: 12px;
      padding: 20px;
      text-align: center;
    }

    .stat-number {
      font-size: 2rem;
      font-weight: 900;
      color: var(--accent-purple);
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* Section 2: Platform Intro & Models */
    .models-chip-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 24px;
    }

    .model-chip {
      background: #ffffff;
      border: 1.5px solid var(--text-dark);
      padding: 6px 14px;
      border-radius: 8px;
      font-size: 0.85rem;
      font-weight: 700;
      box-shadow: 2px 2px 0px var(--text-dark);
    }

    /* Section 3: AIGC Services (Grid) */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 24px;
    }

    .service-card-title {
      font-size: 1.2rem;
      font-weight: 800;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .service-icon-box {
      width: 32px;
      height: 32px;
      border-radius: 6px;
      border: var(--graffiti-border);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 0.9rem;
    }

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

    /* Section 4: One-Stop Features */
    .feature-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    /* Section 5: Industry Solutions */
    .solutions-tabs {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 20px;
    }

    /* Section 6: Service Network */
    .network-box {
      background: #ffffff;
      border: var(--graffiti-border);
      box-shadow: var(--graffiti-shadow);
      border-radius: var(--radius-fun);
      padding: 30px;
      text-align: center;
    }

    .network-tags {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px;
      margin-top: 20px;
    }

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

    .step-card {
      position: relative;
    }

    .step-number {
      width: 40px;
      height: 40px;
      background: var(--accent-yellow);
      border: var(--graffiti-border);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      margin-bottom: 16px;
      box-shadow: 2px 2px 0px #1e293b;
    }

    /* Section 8: Case Center with Media Library Images */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-card {
      overflow: hidden;
      background: #fff;
    }

    .case-img-wrap {
      border-bottom: var(--graffiti-border);
      height: 180px;
      overflow: hidden;
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .case-body {
      padding: 20px;
    }

    /* Section 9: Comparison & Evaluation (5 star, 9.9 score) */
    .comp-score-box {
      background: var(--accent-yellow);
      border: var(--graffiti-border);
      box-shadow: var(--graffiti-shadow);
      border-radius: var(--radius-fun);
      padding: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
    }

    .stars {
      color: #ff477e;
      font-size: 1.5rem;
    }

    .score-big {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--text-dark);
      line-height: 1;
    }

    .comp-table-wrap {
      overflow-x: auto;
    }

    .comp-table {
      width: 100%;
      border-collapse: collapse;
      background: #ffffff;
      border: var(--graffiti-border);
      box-shadow: var(--graffiti-shadow);
      border-radius: 12px;
      overflow: hidden;
    }

    .comp-table th, .comp-table td {
      padding: 16px 20px;
      border: 1px solid var(--border-color);
      text-align: left;
    }

    .comp-table th {
      background: #f1f5f9;
      font-weight: 800;
    }

    .highlight-cell {
      background: rgba(255, 209, 102, 0.2);
      font-weight: 700;
    }

    /* Section 10: Demand Matching */
    .matching-box {
      background: #fff;
      padding: 30px;
    }

    /* Section 11: Token Price */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 20px;
    }

    /* Section 12: Help & Articles */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
      gap: 20px;
    }

    .article-item {
      background: #fff;
      border: var(--graffiti-border);
      box-shadow: var(--graffiti-shadow);
      padding: 18px;
      border-radius: 10px;
    }

    .article-link {
      font-weight: 700;
      color: var(--primary);
      display: inline-block;
      margin-top: 10px;
    }

    /* Section 13: FAQ Accordion */
    .faq-accordion {
      display: flex;
      flex-direction: column;
      gap: 16px;
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: var(--graffiti-border);
      box-shadow: var(--graffiti-shadow);
      border-radius: 10px;
      overflow: hidden;
    }

    .faq-question {
      padding: 18px 24px;
      font-weight: 800;
      font-size: 1.05rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #ffffff;
    }

    .faq-answer {
      padding: 0 24px 18px;
      color: var(--text-muted);
      font-size: 0.95rem;
      display: none;
      border-top: 1px dashed var(--border-color);
      padding-top: 14px;
    }

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

    .faq-item.active .faq-toggle-icon {
      transform: rotate(180deg);
    }

    /* Section 14 & 15: AI Encyclopedia & User Reviews */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 16px;
      padding-top: 16px;
      border-top: 1px solid var(--border-color);
    }

    .user-avatar-text {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--accent-cyan);
      border: 1.5px solid var(--text-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
    }

    /* Section 16: Contact & Form */
    .contact-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }

    .form-group {
      margin-bottom: 20px;
    }

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

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: var(--graffiti-border);
      border-radius: 8px;
      font-size: 0.95rem;
      background: #fafafa;
    }

    .form-control:focus {
      outline: none;
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
    }

    .qr-box {
      text-align: center;
      padding: 20px;
      background: #ffffff;
      border: var(--graffiti-border);
      border-radius: 12px;
      box-shadow: var(--graffiti-shadow);
      max-width: 220px;
      margin-top: 20px;
    }

    .qr-box img {
      width: 100%;
      border-radius: 6px;
    }

    /* Section 17: Franchise / Agency */
    .franchise-banner {
      background: var(--accent-pink);
      color: #ffffff;
      border: var(--graffiti-border);
      box-shadow: var(--graffiti-shadow);
      border-radius: var(--radius-fun);
      padding: 40px;
      text-align: center;
    }

    .franchise-banner h3 {
      font-size: 2rem;
      margin-bottom: 12px;
    }

    /* Footer */
    .footer {
      background: #ffffff;
      border-top: var(--graffiti-border);
      padding: 60px 0 30px;
    }

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

    .footer-col h4 {
      font-size: 1.1rem;
      margin-bottom: 16px;
      font-weight: 800;
    }

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

    .friendship-links a {
      background: #f1f5f9;
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 0.85rem;
      border: 1px solid var(--border-color);
    }

    .footer-bottom {
      text-align: center;
      padding-top: 24px;
      border-top: 1px solid var(--border-color);
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* Float Widgets */
    .float-kefu {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 99;
      background: var(--accent-yellow);
      border: var(--graffiti-border);
      box-shadow: var(--graffiti-shadow);
      border-radius: 30px;
      padding: 10px 18px;
      font-weight: 800;
      display: flex;
      align-items: center;
      gap: 8px;
      cursor: pointer;
      transition: transform 0.2s;
    }

    .float-kefu:hover {
      transform: scale(1.05);
    }

    /* Responsive Design */
    @media (max-width: 992px) {
      .hero-stats { grid-template-columns: repeat(2, 1fr); }
      .feature-row { grid-template-columns: 1fr; }
      .cases-grid { grid-template-columns: 1fr 1fr; }
      .process-steps { grid-template-columns: 1fr 1fr; }
      .reviews-grid { grid-template-columns: 1fr; }
      .contact-container { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .mobile-menu-btn { display: block; }
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: var(--graffiti-border);
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
      }
      .nav-links.active { display: flex; }
      .nav-links li a { padding: 12px; width: 100%; text-align: center; }
      .hero-title { font-size: 2rem; }
      .hero-stats { grid-template-columns: 1fr; }
      .cases-grid { grid-template-columns: 1fr; }
      .process-steps { grid-template-columns: 1fr; }
      .comp-score-box { flex-direction: column; text-align: center; gap: 16px; }
      .footer-grid { grid-template-columns: 1fr; }
    }