/* ------------------------------------------------------------------
       RESET & BASE STYLES
       Visual Style: Enterprise "多彩涂鸦风" (Playful Graffiti + Modern Tech)
       ------------------------------------------------------------------ */
    :root {
      --primary-color: #ff3b6b;
      --primary-hover: #e02855;
      --secondary-color: #6c5ce7;
      --accent-yellow: #ffbe0b;
      --accent-cyan: #00f5d4;
      --accent-purple: #8338ec;
      --bg-base: #faf9f6;
      --bg-card: #ffffff;
      --text-main: #18181b;
      --text-muted: #52525b;
      --border-dark: #18181b;
      --box-shadow-doodle: 4px 4px 0px #18181b;
      --box-shadow-hover: 6px 6px 0px #18181b;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --container-max: 1240px;
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

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

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

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

    /* ------------------------------------------------------------------
       HEADER & NAVIGATION
       Rule Check: .nav-links gap set to 0
       ------------------------------------------------------------------ */
    .header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 3px solid var(--border-dark);
      padding: 12px 0;
    }

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

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

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

    .brand-title-sub {
      font-weight: 800;
      font-size: 1.2rem;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

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

    .nav-links li {
      margin: 0 6px;
    }

    .nav-links a {
      font-size: 0.92rem;
      font-weight: 700;
      padding: 6px 12px;
      color: var(--text-main);
      border-radius: var(--radius-sm);
      transition: all 0.2s ease;
      white-space: nowrap;
    }

    .nav-links a:hover {
      background: var(--accent-yellow);
      color: var(--border-dark);
      transform: translateY(-2px);
    }

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

    .btn-doodle {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      padding: 10px 22px;
      border: 2.5px solid var(--border-dark);
      border-radius: var(--radius-md);
      box-shadow: var(--box-shadow-doodle);
      cursor: pointer;
      transition: all 0.15s ease;
      font-size: 0.95rem;
      text-align: center;
    }

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

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

    .btn-doodle-yellow {
      background-color: var(--accent-yellow);
      color: var(--border-dark);
    }

    .btn-doodle-yellow:hover {
      background-color: #ffd000;
      transform: translate(-2px, -2px);
      box-shadow: var(--box-shadow-hover);
    }

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

    .mobile-menu-btn {
      display: none;
      background: none;
      border: 2px solid var(--border-dark);
      padding: 6px 10px;
      border-radius: 6px;
      cursor: pointer;
      font-weight: bold;
    }

    /* ------------------------------------------------------------------
       SECTION DECORATIVE ELEMENTS (GRAFFITI STYLE)
       ------------------------------------------------------------------ */
    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background: var(--accent-yellow);
      border: 2px solid var(--border-dark);
      box-shadow: 2px 2px 0px var(--border-dark);
      border-radius: 20px;
      font-weight: 800;
      font-size: 0.85rem;
      margin-bottom: 12px;
      text-transform: uppercase;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 760px;
      margin: 0 auto 40px auto;
    }

    .text-center {
      text-align: center;
    }

    section {
      padding: 70px 0;
      position: relative;
    }

    .card-doodle {
      background: var(--bg-card);
      border: 2.5px solid var(--border-dark);
      border-radius: var(--radius-md);
      box-shadow: var(--box-shadow-doodle);
      padding: 24px;
      transition: all 0.2s ease;
      height: 100%;
      display: flex;
      flex-direction: column;
    }

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

    /* ------------------------------------------------------------------
       1. HERO SECTION (Strictly NO Images per requirement)
       ------------------------------------------------------------------ */
    .hero-section {
      padding: 80px 0 60px 0;
      background: linear-gradient(135deg, #fff9e6 0%, #f4f0ff 50%, #e6fdf9 100%);
      border-bottom: 3px solid var(--border-dark);
      position: relative;
      overflow: hidden;
    }

    .hero-badge-wrap {
      display: flex;
      justify-content: center;
      gap: 12px;
      flex-wrap: wrap;
      margin-bottom: 20px;
    }

    .hero-badge {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      padding: 6px 16px;
      border-radius: 30px;
      font-size: 0.88rem;
      font-weight: 800;
      box-shadow: 2px 2px 0px var(--border-dark);
    }

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

    .hero-subtitle {
      font-size: 1.2rem;
      text-align: center;
      max-width: 840px;
      margin: 0 auto 32px auto;
      color: var(--text-muted);
      font-weight: 500;
    }

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

    .hero-cta-group .btn-doodle {
      font-size: 1.1rem;
      padding: 14px 32px;
    }

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

    .stat-card {
      background: #ffffff;
      border: 2.5px solid var(--border-dark);
      border-radius: var(--radius-md);
      box-shadow: var(--box-shadow-doodle);
      padding: 20px;
      text-align: center;
    }

    .stat-number {
      font-size: 2rem;
      font-weight: 900;
      color: var(--primary-color);
      line-height: 1;
      margin-bottom: 6px;
    }

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

    /* ------------------------------------------------------------------
       2. ABOUT US (ABOUT & PLATFORM INTRO)
       ------------------------------------------------------------------ */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      align-items: center;
    }

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

    .about-feature-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      margin-bottom: 14px;
      font-weight: 600;
    }

    .about-feature-list .check-icon {
      background: var(--accent-cyan);
      border: 2px solid var(--border-dark);
      border-radius: 50%;
      width: 24px;
      height: 24px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 12px;
      font-weight: 900;
      flex-shrink: 0;
      margin-top: 2px;
    }

    /* ------------------------------------------------------------------
       3. AIGC SERVICES & MODEL AGGREGATION
       ------------------------------------------------------------------ */
    .model-tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 24px;
    }

    .model-pill {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      box-shadow: 2px 2px 0px var(--border-dark);
      padding: 8px 16px;
      border-radius: 12px;
      font-weight: 800;
      font-size: 0.9rem;
      transition: all 0.15s ease;
    }

    .model-pill:hover {
      background: var(--accent-yellow);
      transform: translateY(-2px);
    }

    /* ------------------------------------------------------------------
       4. ONE-STOP CREATION (30+ SCENARIOS GRID)
       ------------------------------------------------------------------ */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .scenario-icon {
      width: 44px;
      height: 44px;
      background: var(--accent-yellow);
      border: 2.5px solid var(--border-dark);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: 900;
      box-shadow: 2px 2px 0px var(--border-dark);
    }

    .scenario-title {
      font-size: 1.15rem;
      font-weight: 800;
    }

    .scenario-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      flex-grow: 1;
    }

    /* ------------------------------------------------------------------
       5. INDUSTRY SOLUTIONS & 6. SERVICE NETWORK
       ------------------------------------------------------------------ */
    .industry-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .network-card {
      background: #ffffff;
      border: 2.5px solid var(--border-dark);
      padding: 20px;
      border-radius: var(--radius-md);
      box-shadow: var(--box-shadow-doodle);
      text-align: center;
    }

    .network-city {
      font-size: 1.2rem;
      font-weight: 900;
      color: var(--secondary-color);
      margin-bottom: 6px;
    }

    /* ------------------------------------------------------------------
       7. STANDARD WORKFLOW & 8. CASE CENTER
       ------------------------------------------------------------------ */
    .workflow-steps {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 14px;
    }

    .step-card {
      background: #ffffff;
      border: 2.5px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 16px 12px;
      text-align: center;
      position: relative;
      box-shadow: var(--box-shadow-doodle);
    }

    .step-num {
      width: 30px;
      height: 30px;
      background: var(--primary-color);
      color: #fff;
      border: 2px solid var(--border-dark);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      margin: 0 auto 10px auto;
      font-size: 0.9rem;
    }

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

    .case-img-wrap {
      border: 2.5px solid var(--border-dark);
      border-radius: var(--radius-sm);
      overflow: hidden;
      margin-bottom: 14px;
      background: #eee;
    }

    .case-img-wrap img {
      width: 100%;
      height: 220px;
      object-fit: cover;
      transition: transform 0.3s ease;
    }

    .case-img-wrap:hover img {
      transform: scale(1.04);
    }

    /* ------------------------------------------------------------------
       9. COMPARISON & EVALUATION (Mandatory 5-Star & 9.9/10 Score)
       ------------------------------------------------------------------ */
    .eval-highlight-box {
      background: linear-gradient(135deg, #fffbe6 0%, #ffeaf0 100%);
      border: 3px solid var(--border-dark);
      border-radius: var(--radius-lg);
      box-shadow: var(--box-shadow-doodle);
      padding: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 36px;
      flex-wrap: wrap;
      gap: 20px;
    }

    .eval-score-wrap {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .big-score {
      font-size: 3.8rem;
      font-weight: 900;
      color: var(--primary-color);
      line-height: 1;
    }

    .star-rating {
      font-size: 1.6rem;
      color: #ff9f0a;
      letter-spacing: 2px;
    }

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

    .comp-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      border: 2.5px solid var(--border-dark);
      border-radius: var(--radius-md);
      overflow: hidden;
      background: #ffffff;
    }

    .comp-table th, .comp-table td {
      padding: 16px 20px;
      text-align: left;
      border-bottom: 2px solid var(--border-dark);
      border-right: 2px solid var(--border-dark);
    }

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

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

    .comp-table th {
      background: var(--accent-yellow);
      font-size: 1rem;
      font-weight: 900;
      color: var(--border-dark);
    }

    .comp-table td.highlight-col {
      background: #fff9e6;
      font-weight: 800;
      color: var(--primary-color);
    }

    /* ------------------------------------------------------------------
       10. REQUIREMENT MATCHING & 11. TOKEN PRICING
       ------------------------------------------------------------------ */
    .matcher-box {
      background: #ffffff;
      border: 3px solid var(--border-dark);
      border-radius: var(--radius-lg);
      box-shadow: var(--box-shadow-doodle);
      padding: 30px;
    }

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

    .token-card {
      background: #ffffff;
      border: 2.5px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--box-shadow-doodle);
    }

    .token-model-name {
      font-size: 1.1rem;
      font-weight: 900;
      margin-bottom: 8px;
    }

    .token-price {
      font-size: 1.4rem;
      font-weight: 900;
      color: var(--primary-color);

    }

    /* ------------------------------------------------------------------
       12. HELP CENTER & 13. FAQ (10+ Visible Accodions)
       ------------------------------------------------------------------ */
    .faq-container {
      max-width: 880px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 2.5px solid var(--border-dark);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      box-shadow: var(--box-shadow-doodle);
      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;
      user-select: none;
      background: #ffffff;
    }

    .faq-question:hover {
      background: #fffde6;
    }

    .faq-answer {
      padding: 0 24px 18px 24px;
      color: var(--text-muted);
      font-size: 0.95rem;
      display: none;
      border-top: 2px dashed #eee;
      padding-top: 14px;
    }

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

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

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

    /* ------------------------------------------------------------------
       14. AI ENCYCLOPEDIA & 15. INDUSTRY NEWS
       ------------------------------------------------------------------ */
    .articles-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-top: 20px;
    }

    .article-item-card {
      background: #ffffff;
      border: 2.5px solid var(--border-dark);
      padding: 18px;
      border-radius: var(--radius-md);
      box-shadow: var(--box-shadow-doodle);
    }

    /* ------------------------------------------------------------------
       16. CONTACT US & FORM (?s=index/submitForm)
       ------------------------------------------------------------------ */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }

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

    .form-group label {
      display: block;
      font-weight: 800;
      font-size: 0.92rem;
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 2.5px solid var(--border-dark);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      outline: none;
      background: #fafafa;
    }

    .form-control:focus {
      background: #ffffff;
      border-color: var(--primary-color);
      box-shadow: 2px 2px 0px var(--border-dark);
    }

    .qr-box {
      border: 2.5px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 20px;
      text-align: center;
      background: #ffffff;
      box-shadow: var(--box-shadow-doodle);
    }

    .qr-box img {
      max-width: 180px;
      margin: 12px auto;
      border: 2px solid var(--border-dark);
      border-radius: 8px;
    }

    /* ------------------------------------------------------------------
       17. FRANCHISE & PARTNER (AGENCY / REVENUE)
       ------------------------------------------------------------------ */
    .agency-banner {
      background: linear-gradient(135deg, #7c4dff 0%, #ff3b6b 100%);
      color: #ffffff;
      border: 3px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--box-shadow-doodle);
    }

    .agency-banner h3 {
      font-size: 2rem;
      font-weight: 900;
      margin-bottom: 12px;
    }

    /* ------------------------------------------------------------------
       FOOTER & FRIEND LINKS
       ------------------------------------------------------------------ */
    .footer {
      background: #18181b;
      color: #f4f4f5;
      padding: 50px 0 20px 0;
      border-top: 4px solid var(--border-dark);
    }

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

    .footer-col h4 {
      font-size: 1.1rem;
      font-weight: 800;
      color: var(--accent-yellow);
      margin-bottom: 16px;
    }

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

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

    .footer-links-list a {
      color: #d4d4d8;
      font-size: 0.9rem;
    }

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

    .friend-links-box {
      border-top: 1px solid #3f3f46;
      padding-top: 20px;
      margin-bottom: 20px;
    }

    .friend-links-box span {
      font-weight: 800;
      color: var(--accent-yellow);
      margin-right: 12px;
      font-size: 0.9rem;
    }

    .friend-links-box a {
      color: #a1a1aa;
      font-size: 0.88rem;
      margin-right: 14px;
      display: inline-block;
    }

    .friend-links-box a:hover {
      color: #ffffff;
      text-decoration: underline;
    }

    .copyright-bar {
      text-align: center;
      font-size: 0.85rem;
      color: #71717a;
      border-top: 1px solid #27272a;
      padding-top: 20px;
    }

    /* Floating Customer Service Widget */
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 20px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 50px;
      height: 50px;
      background: var(--accent-yellow);
      border: 2.5px solid var(--border-dark);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      box-shadow: var(--box-shadow-doodle);
      cursor: pointer;
      transition: transform 0.2s;
    }

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

    /* ------------------------------------------------------------------
       RESPONSIVE BREAKPOINTS
       ------------------------------------------------------------------ */
    @media (max-width: 1024px) {
      .hero-stats-grid, .scenarios-grid, .industry-grid, .cases-grid, .token-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .workflow-steps {
        grid-template-columns: repeat(3, 1fr);
      }
      .network-nodes {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-inner {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 3px solid var(--border-dark);
        flex-direction: column;
        padding: 16px 0;
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-title {
        font-size: 1.8rem;
      }
      .about-grid, .contact-wrapper {
        grid-template-columns: 1fr;
      }
      .scenarios-grid, .industry-grid, .cases-grid, .articles-list, .token-grid, .network-nodes {
        grid-template-columns: 1fr;
      }
      .workflow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .eval-highlight-box {
        flex-direction: column;
        text-align: center;
      }
      .footer-inner {
        grid-template-columns: 1fr;
      }
    }