:root {
      --bg-main: #fbf9f4;
      --bg-card: #ffffff;
      --bg-alt: #f3efe6;
      --text-main: #1f1d1d;
      --text-muted: #5e5955;
      --color-primary: #ff5436;
      --color-secondary: #ffb703;
      --color-accent: #06d6a0;
      --color-blue: #118ab2;
      --color-purple: #7b2cbf;
      --border-dark: #1f1d1d;
      --shadow-solid: 4px 4px 0px #1f1d1d;
      --shadow-hover: 6px 6px 0px #1f1d1d;
      --shadow-small: 3px 3px 0px #1f1d1d;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-width: 1200px;
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      background-image: 
        radial-gradient(#e5dfd3 1.5px, transparent 1.5px),
        radial-gradient(#e5dfd3 1.5px, var(--bg-main) 1.5px);
      background-size: 32px 32px;
      background-position: 0 0, 16px 16px;
      overflow-x: hidden;
    }

    .container {
      width: 100%;
      max-width: var(--container-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.2s ease;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(251, 249, 244, 0.95);
      border-bottom: 3px solid var(--border-dark);
      backdrop-filter: blur(8px);
    }

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

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

    .logo-container {
      height: 44px;
      display: flex;
      align-items: center;
    }

    .ai-page-logo {
      height: 38px;
      width: auto;
      object-fit: contain;
    }

    .brand-tag {
      font-size: 13px;
      font-weight: 800;
      background-color: var(--color-secondary);
      border: 2px solid var(--border-dark);
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      box-shadow: 2px 2px 0 var(--border-dark);
      display: inline-block;
    }

    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }

    .nav-links li a {
      font-weight: 700;
      font-size: 15px;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      display: inline-block;
      transition: all 0.15s ease;
    }

    .nav-links li a:hover {
      background-color: var(--color-secondary);
      transform: translateY(-2px);
    }

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

    .btn-graffiti {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 15px;
      padding: 10px 22px;
      border-radius: var(--radius-md);
      border: 3px solid var(--border-dark);
      box-shadow: var(--shadow-solid);
      cursor: pointer;
      text-align: center;
      transition: all 0.15s ease;
      white-space: nowrap;
    }

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

    .btn-graffiti:active {
      transform: translate(2px, 2px);
      box-shadow: 1px 1px 0 var(--border-dark);
    }

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

    .btn-yellow {
      background-color: var(--color-secondary);
      color: var(--text-main);
    }

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

    .mobile-menu-btn {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }

    .mobile-menu-btn span {
      display: block;
      width: 26px;
      height: 3px;
      background-color: var(--border-dark);
      border-radius: 2px;
    }

    /* 涂鸦卡片公共类 */
    .doodle-card {
      background: var(--bg-card);
      border: 3px solid var(--border-dark);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-solid);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      position: relative;
    }

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

    .section-wrap {
      padding: 70px 0;
      position: relative;
    }

    .section-badge {
      display: inline-block;
      font-size: 14px;
      font-weight: 900;
      text-transform: uppercase;
      padding: 4px 14px;
      background: var(--color-accent);
      border: 2px solid var(--border-dark);
      border-radius: 30px;
      box-shadow: 2px 2px 0 var(--border-dark);
      margin-bottom: 14px;
    }

    .section-title {
      font-size: 34px;
      font-weight: 900;
      line-height: 1.3;
      margin-bottom: 14px;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 10px;
      flex-wrap: wrap;
    }

    .section-desc {
      font-size: 17px;
      color: var(--text-muted);
      max-width: 780px;
      margin-bottom: 40px;
      line-height: 1.7;
    }

    /* 首屏 Hero - 禁止图片 */
    .hero-section {
      padding: 70px 0 50px;
      position: relative;
    }

    .hero-container {
      display: grid;
      grid-template-columns: 1fr;
      gap: 36px;
      align-items: center;
      text-align: center;
    }

    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background-color: #ffe8d6;
      border: 2px solid var(--border-dark);
      padding: 6px 18px;
      border-radius: 40px;
      box-shadow: var(--shadow-small);
      margin-bottom: 24px;
      font-weight: 800;
      font-size: 14px;
    }

    .hero-title {
      font-size: 46px;
      font-weight: 950;
      line-height: 1.25;
      letter-spacing: -0.5px;
      margin-bottom: 22px;
      color: var(--text-main);
    }

    .hero-title .highlight-box {
      background: var(--color-secondary);
      border: 3px solid var(--border-dark);
      padding: 2px 14px;
      border-radius: var(--radius-md);
      box-shadow: 4px 4px 0 var(--border-dark);
      display: inline-block;
      margin: 4px;
    }

    .hero-lead {
      font-size: 20px;
      color: var(--text-muted);
      max-width: 860px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }

    .hero-cta-group {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 18px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .btn-giant {
      font-size: 18px;
      padding: 16px 36px;
      border-radius: var(--radius-lg);
    }

    /* 首屏纯 CSS 涂鸦看板卡片 (无图片) */
    .hero-stats-panel {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 10px;
    }

    .stat-badge-card {
      padding: 22px 18px;
      text-align: center;
      background: #ffffff;
      border: 3px solid var(--border-dark);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-solid);
    }

    .stat-number {
      font-size: 38px;
      font-weight: 950;
      line-height: 1.1;
      margin-bottom: 6px;
      color: var(--color-primary);
    }

    .stat-label {
      font-size: 14px;
      font-weight: 800;
      color: var(--text-main);
    }

    .stat-sub {
      font-size: 12px;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* 聚合模型滚屏标签云 */
    .model-tags-wrap {
      margin-top: 40px;
      padding: 24px;
      background: var(--bg-alt);
      border: 3px dashed var(--border-dark);
      border-radius: var(--radius-lg);
    }

    .model-tags-title {
      font-weight: 900;
      font-size: 15px;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }

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

    .badge-pill {
      font-size: 13px;
      font-weight: 800;
      padding: 6px 14px;
      background: #fff;
      border: 2px solid var(--border-dark);
      border-radius: 20px;
      box-shadow: 2px 2px 0 var(--border-dark);
    }

    /* 平台介绍与关于我们 */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }

    .about-text h3 {
      font-size: 26px;
      font-weight: 900;
      margin-bottom: 16px;
      line-height: 1.4;
    }

    .feature-list {
      list-style: none;
      margin-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .feature-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-weight: 600;
      font-size: 15px;
    }

    .icon-marker {
      background: var(--color-accent);
      border: 2px solid var(--border-dark);
      width: 24px;
      height: 24px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      flex-shrink: 0;
      box-shadow: 1px 1px 0 var(--border-dark);
      font-size: 13px;
    }

    .media-card-wrap {
      border: 3px solid var(--border-dark);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-solid);
      overflow: hidden;
      background: #fff;
    }

    .media-card-wrap img {
      width: 100%;
      height: auto;
      display: block;
    }

    /* AIGC 服务矩阵卡片 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      padding: 26px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-top {
      margin-bottom: 18px;
    }

    .service-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 800;
      padding: 3px 10px;
      border: 2px solid var(--border-dark);
      border-radius: 6px;
      margin-bottom: 12px;
      box-shadow: 2px 2px 0 var(--border-dark);
    }

    .service-card h4 {
      font-size: 21px;
      font-weight: 900;
      margin-bottom: 10px;
    }

    .service-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 一站式自动化制作流程 */
    .creation-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      margin-bottom: 40px;
    }

    .creation-box {
      padding: 32px;
    }

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

    .step-card {
      padding: 22px;
      text-align: center;
      position: relative;
    }

    .step-idx {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--color-secondary);
      border: 3px solid var(--border-dark);
      box-shadow: 2px 2px 0 var(--border-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: 900;
      margin: 0 auto 14px;
    }

    .step-card h5 {
      font-size: 17px;
      font-weight: 900;
      margin-bottom: 8px;
    }

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

    /* 对比评测表格与卡片 */
    .eval-highlight {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 28px 36px;
      background: #fff8e8;
      border: 3px solid var(--border-dark);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-solid);
      margin-bottom: 30px;
      flex-wrap: wrap;
      gap: 20px;
    }

    .eval-score-box {
      display: flex;
      align-items: center;
      gap: 18px;
    }

    .score-circle {
      width: 80px;
      height: 80px;
      background: var(--color-primary);
      color: #fff;
      border: 3px solid var(--border-dark);
      border-radius: 50%;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      font-weight: 950;
      box-shadow: 3px 3px 0 var(--border-dark);
    }

    .score-circle .big {
      font-size: 26px;
      line-height: 1;
    }

    .score-circle .small {
      font-size: 11px;
    }

    .eval-intro h4 {
      font-size: 22px;
      font-weight: 900;
      margin-bottom: 6px;
    }

    .stars-box {
      color: #ff9f1c;
      font-size: 20px;
      font-weight: 900;
      letter-spacing: 2px;
    }

    .table-container {
      overflow-x: auto;
      background: #fff;
      border: 3px solid var(--border-dark);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-solid);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 15px;
    }

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

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

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

    .compare-table th {
      background: var(--bg-alt);
      font-weight: 900;
      font-size: 16px;
    }

    .col-highlight {
      background: #fffbe6;
      font-weight: 700;
    }

    /* 案例中心 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }

    .case-card {
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    .case-img-box {
      width: 100%;
      aspect-ratio: 16/9;
      overflow: hidden;
      border-bottom: 3px solid var(--border-dark);
      background: #eae5d9;
    }

    .case-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }

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

    .case-content {
      padding: 22px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .case-content h4 {
      font-size: 19px;
      font-weight: 900;
      margin-bottom: 8px;
    }

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

    .token-card {
      padding: 30px;
      text-align: center;
      background: #fff;
    }

    .token-price {
      font-size: 38px;
      font-weight: 950;
      color: var(--color-primary);
      margin: 14px 0 6px;
    }

    .token-save-badge {
      display: inline-block;
      font-size: 13px;
      font-weight: 800;
      background: var(--color-accent);
      border: 2px solid var(--border-dark);
      padding: 2px 10px;
      border-radius: 20px;
      box-shadow: 2px 2px 0 var(--border-dark);
      margin-bottom: 18px;
    }

    /* 需求匹配表单与加盟代理 */
    .interactive-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
    }

    .form-panel {
      padding: 36px;
      background: #ffffff;
    }

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

    .form-group label {
      display: block;
      font-weight: 900;
      font-size: 14px;
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-sm);
      font-size: 15px;
      background: var(--bg-main);
      color: var(--text-main);
      box-shadow: 2px 2px 0 var(--border-dark);
      transition: all 0.2s ease;
      font-family: inherit;
    }

    .form-control:focus {
      outline: none;
      background: #ffffff;
      transform: translate(-1px, -1px);
      box-shadow: 4px 4px 0 var(--border-dark);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }

    /* 用户评论卡片 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      padding: 26px;
      background: #fff;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-top: 18px;
      padding-top: 14px;
      border-top: 2px dashed #ddd;
    }

    .avatar-pseudo {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      border: 2px solid var(--border-dark);
      background: var(--color-secondary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 18px;
      box-shadow: 2px 2px 0 var(--border-dark);
    }

    .reviewer-info h6 {
      font-size: 15px;
      font-weight: 900;
    }

    .reviewer-info span {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* FAQ 手风琴面板 */
    .faq-container {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-item {
      border: 3px solid var(--border-dark);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-solid);
      background: #ffffff;
      overflow: hidden;
      transition: all 0.2s ease;
    }

    .faq-header {
      padding: 18px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      font-weight: 900;
      font-size: 17px;
      user-select: none;
      background: #ffffff;
    }

    .faq-header:hover {
      background: var(--bg-alt);
    }

    .faq-toggle-icon {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      border: 2px solid var(--border-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      background: var(--color-secondary);
      box-shadow: 2px 2px 0 var(--border-dark);
      transition: transform 0.2s ease;
      flex-shrink: 0;
    }

    .faq-body {
      padding: 0 24px 20px 24px;
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      display: none;
      border-top: 1px dashed #eee;
      padding-top: 14px;
    }

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

    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
      background: var(--color-primary);
      color: #fff;
    }

    /* 行业资讯 & AI百科 */
    .articles-wrap {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 30px;
    }

    .articles-content {
      padding: 30px;
      background: #fff;
    }

    .article-links-box {
      padding: 30px;
      background: var(--bg-alt);
    }

    .article-links-box ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .article-links-box li a {
      font-weight: 700;
      font-size: 14px;
      display: inline-block;
      padding: 6px 10px;
      background: #fff;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-sm);
      box-shadow: 2px 2px 0 var(--border-dark);
    }

    .article-links-box li a:hover {
      background: var(--color-secondary);
      transform: translate(-1px, -1px);
    }

    /* 浮动客服入口 */
    .float-kefu-widget {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      align-items: flex-end;
      gap: 10px;
    }

    .kefu-trigger-btn {
      width: 58px;
      height: 58px;
      border-radius: 50%;
      background: var(--color-primary);
      color: #fff;
      border: 3px solid var(--border-dark);
      box-shadow: var(--shadow-solid);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 15px;
      transition: all 0.2s ease;
    }

    .kefu-trigger-btn:hover {
      transform: scale(1.08);
      box-shadow: var(--shadow-hover);
    }

    .kefu-popup {
      display: none;
      width: 250px;
      padding: 20px;
      background: #fff;
      border: 3px solid var(--border-dark);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-solid);
      text-align: center;
    }

    .kefu-popup img {
      width: 150px;
      height: 150px;
      object-fit: cover;
      margin: 10px auto;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-sm);
      display: block;
    }

    /* 页脚 Footer */
    .site-footer {
      background: #ffffff;
      border-top: 3px solid var(--border-dark);
      padding: 50px 0 30px;
      color: var(--text-main);
    }

    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 30px;
      margin-bottom: 40px;
    }

    .footer-col h5 {
      font-size: 16px;
      font-weight: 900;
      margin-bottom: 16px;
      border-bottom: 2px solid var(--border-dark);
      display: inline-block;
      padding-bottom: 4px;
    }

    .footer-col p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }

    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .friend-links-list a {
      font-size: 13px;
      font-weight: 700;
      background: var(--bg-alt);
      padding: 4px 10px;
      border: 1px solid var(--border-dark);
      border-radius: 4px;
    }

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

    .footer-bottom {
      border-top: 2px solid var(--border-dark);
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 14px;
      font-weight: 600;
    }

    .ai-page-home-link {
      font-weight: 800;
      padding: 2px 8px;
      background: var(--color-accent);
      border: 2px solid var(--border-dark);
      border-radius: 4px;
      box-shadow: 1px 1px 0 var(--border-dark);
    }

    /* 响应式样式适配 */
    @media (max-width: 992px) {
      .services-grid, .case-grid, .reviews-grid, .token-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-stats-panel {
        grid-template-columns: repeat(2, 1fr);
      }
      .step-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .interactive-grid, .about-grid, .creation-layout, .articles-wrap {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #fff;
        border-bottom: 3px solid var(--border-dark);
        flex-direction: column;
        padding: 20px;
        gap: 0;
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
        text-align: center;
      }
      .nav-links li a {
        display: block;
        padding: 12px;
      }
      .mobile-menu-btn {
        display: flex;
      }
      .header-actions .btn-graffiti:not(.btn-primary) {
        display: none;
      }
      .hero-title {
        font-size: 32px;
      }
      .services-grid, .case-grid, .reviews-grid, .token-grid, .hero-stats-panel, .step-grid {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
    }