:root {
      --primary: #4f46e5;
      --primary-hover: #4338ca;
      --secondary: #ec4899;
      --accent-yellow: #f59e0b;
      --accent-green: #10b981;
      --accent-cyan: #06b6d4;
      --accent-orange: #f97316;
      --bg-main: #faf9f6;
      --bg-card: #ffffff;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --doodle-border: #1e293b;
      --shadow-doodle: 4px 4px 0px #1e293b;
      --shadow-doodle-lg: 6px 6px 0px #1e293b;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }

    * {
      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);
      background-image: 
        radial-gradient(circle at 10% 20%, rgba(245, 158, 11, 0.05) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(236, 72, 153, 0.05) 0%, transparent 20%),
        radial-gradient(#e2e8f0 1px, transparent 1px);
      background-size: 100% 100%, 100% 100%, 24px 24px;
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 2px solid var(--doodle-border);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
      color: var(--text-main);
    }

    .brand-logo-wrap {
      max-height: 42px;
      display: flex;
      align-items: center;
    }

    .brand-logo-wrap img {
      height: 40px;
      width: auto;
      object-fit: contain;
    }

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

    .nav-menu {
      display: flex;
      align-items: center;
    }

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

    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      text-decoration: none;
      border-radius: var(--radius-sm);
      transition: all 0.2s ease;
    }

    .nav-links li a:hover {
      background-color: #fef08a;
      color: #0f172a;
      transform: translateY(-2px);
    }

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

    .btn-doodle {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      font-size: 0.95rem;
      font-weight: 700;
      text-decoration: none;
      border-radius: var(--radius-md);
      border: 2px solid var(--doodle-border);
      box-shadow: var(--shadow-doodle);
      transition: all 0.15s ease;
      cursor: pointer;
      white-space: nowrap;
    }

    .btn-doodle:hover {
      transform: translate(-2px, -2px);
      box-shadow: 6px 6px 0px var(--doodle-border);
    }

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

    .btn-primary {
      background-color: #6366f1;
      color: #ffffff;
    }

    .btn-accent {
      background-color: #facc15;
      color: #1e293b;
    }

    .btn-green {
      background-color: #34d399;
      color: #064e3b;
    }

    .btn-outline {
      background-color: #ffffff;
      color: var(--text-main);
    }

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

    /* 首屏 Hero（无图片） */
    .hero-section {
      padding: 60px 0 50px;
      position: relative;
    }

    .hero-wrapper {
      background: #ffffff;
      border: 3px solid var(--doodle-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-doodle-lg);
      padding: 48px 36px;
      position: relative;
      overflow: hidden;
    }

    .hero-badge-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 20px;
    }

    .badge-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      font-size: 0.85rem;
      font-weight: 700;
      border-radius: 999px;
      border: 2px solid var(--doodle-border);
      box-shadow: 2px 2px 0px var(--doodle-border);
      background-color: #e0e7ff;
      color: #3730a3;
    }

    .badge-yellow { background-color: #fef08a; color: #854d0e; }
    .badge-pink { background-color: #fbcfe8; color: #9d174d; }
    .badge-green { background-color: #a7f3d0; color: #065f46; }

    .hero-title {
      font-size: 2.75rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .hero-title span {
      background: linear-gradient(120deg, #4f46e5 0%, #ec4899 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      max-width: 820px;
      margin-bottom: 32px;
      line-height: 1.7;
    }

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

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      padding-top: 28px;
      border-top: 2px dashed #cbd5e1;
    }

    .hero-stat-card {
      background: #f8fafc;
      border: 2px solid var(--doodle-border);
      border-radius: var(--radius-md);
      padding: 16px 14px;
      text-align: center;
      box-shadow: 3px 3px 0px var(--doodle-border);
    }

    .hero-stat-num {
      font-size: 1.6rem;
      font-weight: 900;
      color: #4f46e5;
      margin-bottom: 4px;
    }

    .hero-stat-label {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-muted);
    }

    /* 通用模块样式 */
    .section-block {
      padding: 60px 0;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 44px;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 12px;
      font-size: 0.82rem;
      font-weight: 800;
      text-transform: uppercase;
      border-radius: 6px;
      border: 2px solid var(--doodle-border);
      box-shadow: 2px 2px 0px var(--doodle-border);
      background-color: #fef08a;
      color: #854d0e;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .section-subtitle {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 涂鸦卡片网格 */
    .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: repeat(2, 1fr);
      gap: 28px;
    }

    .card-doodle {
      background: #ffffff;
      border: 2px solid var(--doodle-border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-doodle);
      padding: 24px;
      transition: all 0.2s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .card-doodle:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-doodle-lg);
    }

    .card-icon-header {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      border: 2px solid var(--doodle-border);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 16px;
      box-shadow: 2px 2px 0px var(--doodle-border);
    }

    .card-title {
      font-size: 1.18rem;
      font-weight: 800;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .card-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .card-meta-tag {
      display: inline-block;
      font-size: 0.78rem;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 4px;
      border: 1px solid var(--doodle-border);
      background: #f1f5f9;
      color: #475569;
    }

    /* 场景分类卡片展示 */
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 20px;
    }

    .scene-card {
      background: #ffffff;
      border: 2px solid var(--doodle-border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-doodle);
      padding: 20px;
      transition: transform 0.2s ease;
    }

    .scene-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-doodle-lg);
    }

    .scene-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 12px;
    }

    .scene-name {
      font-size: 1.08rem;
      font-weight: 800;
      color: var(--text-main);
    }

    .scene-tag {
      font-size: 0.75rem;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 999px;
      border: 1px solid var(--doodle-border);
      background: #fef08a;
    }

    .scene-text {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 评测与对比表格 */
    .rating-banner {
      background: linear-gradient(135deg, #fef3c7 0%, #fed7aa 100%);
      border: 3px solid var(--doodle-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-doodle-lg);
      padding: 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 32px;
      flex-wrap: wrap;
      gap: 20px;
    }

    .rating-score-box {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .rating-number {
      font-size: 3.5rem;
      font-weight: 900;
      line-height: 1;
      color: #ea580c;
    }

    .rating-info h4 {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--text-main);
    }

    .rating-stars {
      color: #f59e0b;
      font-size: 1.2rem;
      font-weight: 800;
    }

    .table-container {
      overflow-x: auto;
      background: #ffffff;
      border: 2px solid var(--doodle-border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-doodle);
    }

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

    .doodle-table th, .doodle-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }

    .doodle-table th {
      background: #f8fafc;
      font-weight: 800;
      color: var(--text-main);
      border-bottom: 2px solid var(--doodle-border);
    }

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

    .highlight-cell {
      background-color: #fdf4ff;
      font-weight: 700;
      color: #a21caf;
    }

    /* 案例展示 */
    .case-card-img {
      border-radius: var(--radius-md);
      border: 2px solid var(--doodle-border);
      box-shadow: var(--shadow-doodle);
      overflow: hidden;
      background: #fff;
    }

    .case-img-wrap {
      width: 100%;
      height: 220px;
      background: #f1f5f9;
      overflow: hidden;
    }

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

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

    .case-info {
      padding: 18px;
    }

    .case-title {
      font-size: 1.1rem;
      font-weight: 800;
      margin-bottom: 6px;
    }

    /* 标签云与模型库 */
    .model-pills-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 24px;
    }

    .model-pill {
      background: #ffffff;
      border: 2px solid var(--doodle-border);
      border-radius: 30px;
      padding: 6px 16px;
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-main);
      box-shadow: 2px 2px 0px var(--doodle-border);
      transition: all 0.15s ease;
    }

    .model-pill:hover {
      background-color: #c7d2fe;
      transform: translateY(-2px);
    }

    /* FAQ 展开项 */
    .faq-wrapper {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #ffffff;
      border: 2px solid var(--doodle-border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-doodle);
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      padding: 18px 22px;
      background: none;
      border: none;
      text-align: left;
      font-size: 1.05rem;
      font-weight: 800;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }

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

    .faq-answer {
      display: none;
      padding: 0 22px 18px;
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.65;
      border-top: 1px dashed #e2e8f0;
      padding-top: 14px;
    }

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

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

    /* 评论卡片 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .review-card {
      background: #ffffff;
      border: 2px solid var(--doodle-border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-doodle);
      padding: 22px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

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

    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      border: 2px solid var(--doodle-border);
      background: #fde047;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
    }

    .review-user-name {
      font-size: 1rem;
      font-weight: 800;
    }

    .review-user-role {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .review-content {
      font-size: 0.92rem;
      color: #334155;
      line-height: 1.6;
    }

    /* 表单与需求匹配 */
    .form-box {
      background: #ffffff;
      border: 3px solid var(--doodle-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-doodle-lg);
      padding: 36px;
    }

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

    .form-label {
      display: block;
      font-weight: 800;
      font-size: 0.92rem;
      margin-bottom: 8px;
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.95rem;
      border: 2px solid var(--doodle-border);
      border-radius: var(--radius-sm);
      outline: none;
      background: #f8fafc;
      color: var(--text-main);
      font-family: inherit;
      transition: all 0.2s ease;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      background: #ffffff;
      box-shadow: 2px 2px 0px var(--primary);
    }

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

    /* 资讯文章列表 */
    .article-list-wrap {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }

    .article-item {
      background: #ffffff;
      border: 2px solid var(--doodle-border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-doodle);
      padding: 16px 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      text-decoration: none;
      color: var(--text-main);
      transition: all 0.2s ease;
    }

    .article-item:hover {
      transform: translateX(4px);
      background: #fefce8;
    }

    .article-title {
      font-size: 0.95rem;
      font-weight: 700;
      max-width: 80%;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    /* 底部与友情链接 */
    .site-footer {
      background: #ffffff;
      border-top: 3px solid var(--doodle-border);
      padding: 50px 0 30px;
      margin-top: 60px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 32px;
      margin-bottom: 40px;
    }

    .footer-col h5 {
      font-size: 1.05rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-main);
    }

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

    .footer-links-list a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.9rem;
      font-weight: 600;
      transition: color 0.15s;
    }

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

    .qr-contact-box {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .qr-img-frame {
      width: 100px;
      height: 100px;
      border: 2px solid var(--doodle-border);
      border-radius: var(--radius-sm);
      overflow: hidden;
      background: #fff;
      flex-shrink: 0;
    }

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

    .footer-bottom {
      border-top: 2px dashed #cbd5e1;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    .friend-links-bar {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
    }

    .friend-links-bar a {
      color: #475569;
      text-decoration: none;
      font-size: 0.86rem;
      font-weight: 600;
    }

    .friend-links-bar a:hover {
      color: #4f46e5;
    }

    /* 浮动工具栏 */
    .float-toolbar {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      border: 2px solid var(--doodle-border);
      box-shadow: 3px 3px 0px var(--doodle-border);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      cursor: pointer;
      text-decoration: none;
      color: var(--text-main);
      transition: all 0.15s;
    }

    .float-btn:hover {
      transform: scale(1.08);
      background: #fef08a;
    }

    /* 响应式断点 */
    @media (max-width: 992px) {
      .hero-title { font-size: 2.2rem; }
      .grid-3, .review-grid { grid-template-columns: repeat(2, 1fr); }
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .article-list-wrap { grid-template-columns: 1fr; }
    }

    @media (max-width: 768px) {
      .mobile-menu-toggle { display: block; }
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 2px solid var(--doodle-border);
        padding: 20px;
        box-shadow: 0 10px 15px rgba(0,0,0,0.05);
      }
      .nav-menu.active { display: block; }
      .nav-links {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
      }
      .nav-links li { width: 100%; }
      .nav-links li a { width: 100%; padding: 10px 0; }
      .hero-title { font-size: 1.8rem; }
      .grid-3, .grid-4, .grid-2, .review-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .rating-banner { flex-direction: column; align-items: flex-start; }
      .hero-wrapper { padding: 24px 18px; }
      .float-toolbar { right: 12px; bottom: 20px; }
    }