/* CSS Root & Reset - Enterprise Passion Red Theme */
    :root {
      --primary-red: #D32F2F;
      --primary-dark-red: #900C3F;
      --accent-flame: #FF2A4D;
      --accent-warm: #FF6B4A;
      --bg-light: #FDFBFB;
      --bg-surface: #FFFFFF;
      --bg-card: #FFF8F8;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-color: #F1D6D6;
      --border-hover: #FFB3B3;
      --shadow-sm: 0 4px 12px rgba(211, 47, 47, 0.06);
      --shadow-md: 0 8px 24px rgba(211, 47, 47, 0.12);
      --shadow-lg: 0 16px 36px rgba(144, 12, 63, 0.15);
      --max-width: 1240px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * {
      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;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.6;
    }

    body {
      overflow-x: hidden;
    }

    /* Container Standard */
    .container {
      width: 100%;
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
    }

    a {
      color: var(--primary-red);
      text-decoration: none;
      transition: var(--transition);
    }

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

    /* Header & Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      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: 76px;
    }

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

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

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

    .nav-links li a {
      padding: 8px 14px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      display: inline-block;
      border-radius: 6px;
    }

    .nav-links li a:hover {
      color: var(--primary-red);
      background: rgba(211, 47, 47, 0.05);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 15px;
      font-weight: 600;
      border-radius: 8px;
      cursor: pointer;
      border: none;
      transition: var(--transition);
      text-align: center;
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--accent-flame), var(--primary-red));
      color: #FFFFFF !important;
      box-shadow: 0 4px 14px rgba(255, 42, 77, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 42, 77, 0.45);
      background: linear-gradient(135deg, #FF4D6A, var(--primary-dark-red));
    }

    .btn-outline {
      border: 1px solid var(--primary-red);
      color: var(--primary-red);
      background: transparent;
    }

    .btn-outline:hover {
      background: rgba(211, 47, 47, 0.08);
    }

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

    /* Section Global Headers */
    .section-title-wrap {
      text-align: center;
      margin-bottom: 48px;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 16px;
      background: rgba(211, 47, 47, 0.08);
      color: var(--primary-red);
      font-weight: 700;
      font-size: 13px;
      border-radius: 20px;
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      margin-top: 10px;
      max-width: 720px;
      margin-left: auto;
      margin-right: auto;
    }

    section {
      padding: 80px 0;
      border-bottom: 1px solid rgba(0,0,0,0.03);
    }

    /* 1. HERO SECTION (STRICT NO IMAGES) */
    .hero-section {
      background: radial-gradient(circle at 80% 20%, rgba(255, 42, 77, 0.08) 0%, transparent 50%),
                  radial-gradient(circle at 10% 90%, rgba(144, 12, 63, 0.05) 0%, transparent 60%),
                  #FFFFFF;
      padding: 90px 0 80px 0;
      position: relative;
      overflow: hidden;
    }

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

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: rgba(255, 42, 77, 0.1);
      border: 1px solid rgba(255, 42, 77, 0.2);
      border-radius: 30px;
      color: var(--primary-red);
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 24px;
    }

    .hero-title {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 900;
      color: #0F172A;
      margin-bottom: 20px;
    }

    .hero-title span {
      background: linear-gradient(135deg, var(--accent-flame), var(--primary-dark-red));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: 18px;
      color: var(--text-muted);
      margin-bottom: 36px;
      line-height: 1.7;
    }

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

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

    .stat-card-item {
      text-align: center;
    }

    .stat-num {
      font-size: 30px;
      font-weight: 900;
      color: var(--primary-red);
    }

    .stat-lbl {
      font-size: 13px;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* 2. ABOUT US & PLATFORM OVERVIEW */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .about-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

    .about-card h3 {
      font-size: 24px;
      color: var(--primary-dark-red);
      margin-bottom: 16px;
    }

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

    .feature-check-list li {
      position: relative;
      padding-left: 28px;
      margin-bottom: 12px;
      font-size: 15px;
    }

    .feature-check-list li::before {
      content: "✓";
      position: absolute;
      left: 0;
      color: var(--accent-flame);
      font-weight: bold;
    }

    /* 3. AIGC SERVICES & SCENARIOS GRID */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 20px;
    }

    .scenario-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      transition: var(--transition);
    }

    .scenario-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-red);
    }

    .scenario-icon {
      width: 44px;
      height: 44px;
      background: rgba(255, 42, 77, 0.08);
      color: var(--primary-red);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 18px;
      margin-bottom: 16px;
    }

    .scenario-card h4 {
      font-size: 18px;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .scenario-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* Model Tag Cloud */
    .model-tags-box {
      margin-top: 40px;
      background: #FFF5F5;
      padding: 28px;
      border-radius: 16px;
      border: 1px dashed var(--border-hover);
      text-align: center;
    }

    .model-tags-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--primary-dark-red);
      margin-bottom: 16px;
    }

    .model-tags-list {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

    .model-tag {
      padding: 6px 14px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: 20px;
      font-size: 13px;
      color: var(--text-main);
      font-weight: 500;
    }

    /* 4. ONE-STOP & INDUSTRY SOLUTIONS */
    .solutions-tabs {
      display: flex;
      justify-content: center;
      gap: 12px;
      margin-bottom: 32px;
      flex-wrap: wrap;
    }

    .tab-btn {
      padding: 10px 24px;
      border-radius: 30px;
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
    }

    .tab-btn.active, .tab-btn:hover {
      background: var(--primary-red);
      color: #FFFFFF;
      border-color: var(--primary-red);
    }

    .solution-content-card {
      background: var(--bg-surface);
      border-radius: 16px;
      border: 1px solid var(--border-color);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }

    /* 5. SERVICE NETWORK */
    .network-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: center;
    }

    .network-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      padding: 24px;
      border-radius: 12px;
    }

    .network-card h5 {
      font-size: 18px;
      color: var(--primary-red);
      margin-bottom: 8px;
    }

    /* 6. STANDARD PROCESS */
    .process-steps-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .process-step-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      padding: 28px 20px;
      border-radius: 12px;
      position: relative;
    }

    .step-idx {
      font-size: 28px;
      font-weight: 900;
      color: rgba(211, 47, 47, 0.2);
      position: absolute;
      top: 12px;
      right: 16px;
    }

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

    /* 7. CASE CENTER (IMGS REQUIRED HERE) */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-card {
      background: var(--bg-surface);
      border-radius: 12px;
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .case-img-wrap {
      width: 100%;
      height: 200px;
      background: #F1F5F9;
      overflow: hidden;
    }

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

    .case-info {
      padding: 20px;
    }

    .case-info h4 {
      font-size: 16px;
      margin-bottom: 6px;
    }

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

    /* 8. COMPARISON RATING (STRICT SCORE 9.9 & 5 STAR) */
    .rating-banner {
      background: linear-gradient(135deg, var(--primary-dark-red), var(--primary-red));
      color: #FFFFFF;
      border-radius: 16px;
      padding: 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 32px;
      box-shadow: var(--shadow-md);
    }

    .rating-score-box {
      text-align: right;
    }

    .stars-line {
      font-size: 24px;
      color: #FFD700;
    }

    .score-val {
      font-size: 36px;
      font-weight: 900;
    }

    .compare-table-wrap {
      overflow-x: auto;
      background: var(--bg-surface);
      border-radius: 12px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

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

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

    table.compare-table th {
      background: #FFF5F5;
      color: var(--primary-dark-red);
      font-weight: 700;
    }

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

    .highlight-col {
      background: rgba(255, 42, 77, 0.04);
      font-weight: 700;
      color: var(--primary-red);
    }

    /* 9. TOKEN PRICE COMPARISON */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .token-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      text-align: center;
    }

    .token-price {
      font-size: 28px;
      font-weight: 900;
      color: var(--primary-red);
      margin: 12px 0;
    }

    /* 10. REVIEWS (6 CARDS) */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

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

    .avatar-placeholder {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--accent-flame), var(--primary-red));
      color: #FFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }

    .review-user-name {
      font-weight: 700;
      font-size: 15px;
    }

    .review-user-role {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 11. FAQ ACCORDION (>=10 ITEMS) */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      margin-bottom: 12px;
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      padding: 18px 24px;
      text-align: left;
      background: none;
      border: none;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      padding: 0 24px;
      color: var(--text-muted);
      font-size: 14px;
    }

    .faq-item.active .faq-answer {
      padding: 0 24px 18px 24px;
      max-height: 200px;
    }

    .faq-item.active .faq-question {
      color: var(--primary-red);
    }

    /* 12. ARTICLES & ARTICLES PLACEHOLDER */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .article-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      padding: 20px;
    }

    .article-card h5 {
      font-size: 16px;
      margin-bottom: 8px;
    }

    /* 13. FRANCHISE & AGENCY */
    .agency-box {
      background: linear-gradient(135deg, #FFF0F2 0%, #FFE5E8 100%);
      border: 1px solid var(--border-hover);
      border-radius: 16px;
      padding: 40px;
      text-align: center;
    }

    /* 14. CONTACT US & FORM */
    .contact-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }

    .contact-info-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 32px;
    }

    .qr-box {
      margin-top: 20px;
      text-align: center;
      padding: 16px;
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      display: inline-block;
    }

    .qr-box img {
      width: 140px;
      height: 140px;
      object-fit: contain;
    }

    .form-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }

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

    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      font-size: 14px;
      outline: none;
      transition: var(--transition);
    }

    .form-control:focus {
      border-color: var(--primary-red);
      box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.1);
    }

    /* 15. FOOTER & FRIENDSHIP LINKS */
    .site-footer {
      background: #111827;
      color: #9CA3AF;
      padding: 60px 0 30px 0;
      font-size: 14px;
    }

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

    .footer-col h5 {
      color: #FFFFFF;
      font-size: 16px;
      margin-bottom: 16px;
    }

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

    .friendship-links a {
      color: #9CA3AF;
      font-size: 13px;
    }

    .friendship-links a:hover {
      color: #FFFFFF;
    }

    .footer-bottom {
      border-top: 1px solid #1F2937;
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
    }

    /* Float Service Button */
    .float-kefu {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 999;
      background: var(--primary-red);
      color: #FFF;
      width: 56px;
      height: 56px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-lg);
      font-weight: 700;
      cursor: pointer;
    }

    /* Responsive Breakpoints */
    @media (max-width: 992px) {
      .hero-stats-grid, .network-grid, .process-steps-row {
        grid-template-columns: repeat(2, 1fr);
      }
      .case-grid, .reviews-grid, .token-grid, .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid, .contact-layout, .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 32px;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #FFF;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-stats-grid, .case-grid, .reviews-grid, .token-grid, .articles-grid, .network-grid, .process-steps-row {
        grid-template-columns: 1fr;
      }
      .rating-banner {
        flex-direction: column;
        text-align: center;
        gap: 16px;
      }
      .rating-score-box {
        text-align: center;
      }
    }