:root {
      --bg-main: #fbfbf9;
      --bg-soft: #f4f5ee;
      --text-dark: #1e2329;
      --text-muted: #555d67;
      --graffiti-yellow: #ffe600;
      --graffiti-pink: #ff3366;
      --graffiti-cyan: #00d4ff;
      --graffiti-lime: #22e67a;
      --graffiti-purple: #8338ec;
      --border-ink: #1e2329;
      --shadow-ink: 4px 4px 0px #1e2329;
      --shadow-hover: 6px 6px 0px #1e2329;
      --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 {
      background-color: var(--bg-main);
      color: var(--text-dark);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      line-height: 1.6;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 15px 15px, rgba(30, 35, 41, 0.05) 2px, transparent 0);
      background-size: 32px 32px;
    }

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

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(251, 251, 249, 0.95);
      border-bottom: 2px solid var(--border-ink);
      backdrop-filter: blur(8px);
    }

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

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

    .logo-box {
      width: 130px;
      display: flex;
      align-items: center;
    }

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

    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-weight: 700;
      font-size: 0.95rem;
      border-radius: var(--radius-sm);
      transition: all 0.2s ease;
    }

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

    .nav-action {
      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: 800;
      border: 2px solid var(--border-ink);
      border-radius: var(--radius-sm);
      background: #ffffff;
      color: var(--text-dark);
      box-shadow: var(--shadow-ink);
      cursor: pointer;
      transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
    }

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

    .btn-hero {
      background: var(--graffiti-yellow);
      font-size: 1.15rem;
      padding: 14px 34px;
    }

    .btn-hero:hover {
      background: #ffd600;
    }

    .btn-pink {
      background: var(--graffiti-pink);
      color: #fff;
    }

    .btn-pink:hover {
      background: #e62054;
    }

    .btn-cyan {
      background: var(--graffiti-cyan);
    }

    .nav-toggle {
      display: none;
      background: none;
      border: 2px solid var(--border-ink);
      padding: 6px 10px;
      font-size: 1.2rem;
      cursor: pointer;
      border-radius: var(--radius-sm);
    }

    /* 标题与版块共用 */
    .section-padding {
      padding: 72px 0;
    }

    .section-head {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 48px;
    }

    .tag-badge {
      display: inline-block;
      padding: 4px 14px;
      font-size: 0.85rem;
      font-weight: 800;
      background: #ffffff;
      border: 2px solid var(--border-ink);
      border-radius: 50px;
      box-shadow: 2px 2px 0 var(--border-ink);
      margin-bottom: 14px;
      text-transform: uppercase;
    }

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

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

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 首屏 Hero */
    .hero-section {
      padding: 70px 0 60px;
      position: relative;
    }

    .hero-layout {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 36px;
      align-items: center;
    }

    .hero-text h1 {
      font-size: 2.75rem;
      line-height: 1.2;
      font-weight: 900;
      color: var(--text-dark);
      margin-bottom: 20px;
    }

    .hero-text .hero-sub {
      font-size: 1.15rem;
      color: var(--text-muted);
      margin-bottom: 30px;
      line-height: 1.7;
    }

    .hero-cta {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      margin-bottom: 36px;
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      border-top: 2px dashed var(--border-ink);
      padding-top: 24px;
    }

    .stat-item .num {
      font-size: 1.8rem;
      font-weight: 900;
      color: var(--text-dark);
    }

    .stat-item .label {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-muted);
    }

    .hero-art-box {
      border: 3px solid var(--border-ink);
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: 8px 8px 0 var(--border-ink);
      position: relative;
    }

    .hero-art-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }

    .art-pill {
      border: 2px solid var(--border-ink);
      padding: 14px 16px;
      border-radius: var(--radius-md);
      font-weight: 800;
      box-shadow: 3px 3px 0 var(--border-ink);
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .art-pill span {
      font-size: 0.75rem;
      font-weight: 500;
      color: var(--text-muted);
    }

    /* 涂鸦风格卡片 */
    .graffiti-card {
      background: #ffffff;
      border: 2px solid var(--border-ink);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-ink);
      transition: all 0.2s ease;
      position: relative;
    }

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

    .card-icon-pill {
      width: 44px;
      height: 44px;
      border: 2px solid var(--border-ink);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 1.1rem;
      box-shadow: 2px 2px 0 var(--border-ink);
      margin-bottom: 16px;
    }

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

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

    .grid-2 {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }

    .feature-card h3 {
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 10px;
    }

    .feature-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 流程步骤 */
    .steps-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      position: relative;
    }

    .step-card {
      background: #fff;
      border: 2px solid var(--border-ink);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-ink);
      position: relative;
    }

    .step-badge {
      display: inline-block;
      font-size: 1.1rem;
      font-weight: 900;
      padding: 2px 10px;
      background: var(--graffiti-lime);
      border: 2px solid var(--border-ink);
      border-radius: 20px;
      margin-bottom: 12px;
    }

    /* 评测卡片与表格 */
    .rating-header {
      background: var(--graffiti-yellow);
      border: 3px solid var(--border-ink);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: 6px 6px 0 var(--border-ink);
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
      flex-wrap: wrap;
      gap: 20px;
    }

    .score-banner {
      display: flex;
      align-items: baseline;
      gap: 8px;
    }

    .score-big {
      font-size: 3.5rem;
      font-weight: 900;
      line-height: 1;
    }

    .score-full {
      font-size: 1.5rem;
      font-weight: 700;
    }

    .stars-box {
      font-size: 1.6rem;
      letter-spacing: 2px;
    }

    .table-responsive {
      overflow-x: auto;
      border: 2px solid var(--border-ink);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-ink);
      background: #fff;
    }

    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }

    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 2px solid var(--border-ink);
      border-right: 2px solid var(--border-ink);
      font-size: 0.95rem;
    }

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

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

    .custom-table th {
      background: var(--bg-soft);
      font-weight: 800;
    }

    .custom-table td.highlight {
      background: #fffbe6;
      font-weight: 700;
    }

    /* 案例展示与图文 */
    .media-container {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: var(--bg-soft);
      border: 2px solid var(--border-ink);
      border-radius: var(--radius-sm);
      overflow: hidden;
      margin-bottom: 14px;
    }

    .media-container.square {
      aspect-ratio: 1 / 1;
    }

    .media-container img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    .banner-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 30px;
    }

    .banner-card {
      border: 2px solid var(--border-ink);
      border-radius: var(--radius-md);
      background: #fff;
      padding: 14px;
      box-shadow: var(--shadow-ink);
    }

    /* FAQ 手风琴 */
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      border: 2px solid var(--border-ink);
      border-radius: var(--radius-md);
      background: #fff;
      box-shadow: var(--shadow-ink);
      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;
      transition: background 0.2s ease;
    }

    .faq-question:hover {
      background: var(--bg-soft);
    }

    .faq-icon {
      font-size: 1.3rem;
      font-weight: 900;
      transition: transform 0.2s ease;
    }

    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 0.95rem;
      color: var(--text-muted);
      border-top: 1px dashed var(--border-ink);
      line-height: 1.6;
    }

    .faq-item.active .faq-answer {
      display: block;
      padding-top: 16px;
    }

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

    /* 评论卡片 */
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 18px;
      padding-top: 14px;
      border-top: 2px dashed #eee;
    }

    .user-avatar-tag {
      width: 36px;
      height: 36px;
      border: 2px solid var(--border-ink);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      background: var(--graffiti-yellow);
    }

    /* 表单组件 */
    .form-wrap {
      max-width: 780px;
      margin: 0 auto;
      background: #fff;
      border: 3px solid var(--border-ink);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: 8px 8px 0 var(--border-ink);
    }

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

    .form-group label {
      display: block;
      font-weight: 800;
      margin-bottom: 8px;
      font-size: 0.95rem;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.95rem;
      border: 2px solid var(--border-ink);
      border-radius: var(--radius-sm);
      background: #fafaf8;
      font-family: inherit;
      outline: none;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .form-control:focus {
      background: #ffffff;
      box-shadow: 3px 3px 0 var(--border-ink);
    }

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

    /* 代理加盟政策条 */
    .agent-box {
      background: var(--graffiti-lime);
      border: 3px solid var(--border-ink);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: 8px 8px 0 var(--border-ink);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
      flex-wrap: wrap;
    }

    .agent-content h3 {
      font-size: 1.8rem;
      font-weight: 900;
      margin-bottom: 10px;
    }

    /* 悬浮客服 */
    .float-kefu {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 999;
      background: #fff;
      border: 2px solid var(--border-ink);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-ink);
      padding: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 6px;
      max-width: 130px;
      text-align: center;
    }

    .float-kefu .qr-box {
      width: 84px;
      height: 84px;
      border: 1px solid var(--border-ink);
      border-radius: 4px;
      overflow: hidden;
    }

    .float-kefu .qr-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .float-kefu span {
      font-size: 0.75rem;
      font-weight: 800;
    }

    /* 标签云与支持模型 */
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

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

    /* 文章列表 */
    .article-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .article-item {
      background: #fff;
      border: 2px solid var(--border-ink);
      border-radius: var(--radius-md);
      padding: 18px;
      box-shadow: var(--shadow-ink);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .article-item h4 {
      font-size: 1.05rem;
      font-weight: 800;
      margin-bottom: 10px;
    }

    /* 页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 3px solid var(--border-ink);
      padding: 60px 0 24px;
    }

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

    .footer-col h4 {
      font-size: 1.1rem;
      font-weight: 900;
      margin-bottom: 16px;
      border-bottom: 2px solid var(--border-ink);
      display: inline-block;
      padding-bottom: 4px;
    }

    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-links-list a:hover {
      text-decoration: underline;
    }

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

    .friend-links a {
      font-size: 0.9rem;
      font-weight: 700;
      padding: 4px 10px;
      background: var(--bg-soft);
      border: 1px solid var(--border-ink);
      border-radius: 4px;
    }

    .friend-links a:hover {
      background: var(--graffiti-yellow);
    }

    .footer-bottom {
      border-top: 2px dashed var(--border-ink);
      padding-top: 20px;
      text-align: center;
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* 响应式断点 */
    @media (max-width: 992px) {
      .hero-layout {
        grid-template-columns: 1fr;
      }
      .grid-4, .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-row {
        grid-template-columns: repeat(2, 1fr);
      }
      .banner-row, .article-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-layout {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 2px solid var(--border-ink);
        padding: 16px 0;
        box-shadow: var(--shadow-ink);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-toggle {
        display: block;
      }
      .grid-4, .grid-3, .grid-2, .steps-row, .banner-row, .article-grid {
        grid-template-columns: 1fr;
      }
      .hero-text h1 {
        font-size: 2.1rem;
      }
      .hero-stats {
        grid-template-columns: 1fr;
      }
      .agent-box {
        flex-direction: column;
        align-items: flex-start;
      }
      .float-kefu {
        display: none;
      }
    }