:root {
      --candy-pink: #ff6b8b;
      --candy-purple: #7952b3;
      --candy-blue: #3a86ff;
      --candy-cyan: #00b4d8;
      --candy-orange: #ff9f1c;
      --candy-yellow: #ffd166;
      --candy-green: #06d6a0;
      --bg-cream: #faf9fd;
      --card-bg: #ffffff;
      --text-main: #2b2d42;
      --text-muted: #5c677d;
      --border-color: #f0e6f6;
      --shadow-sm: 0 4px 15px rgba(121, 82, 179, 0.08);
      --shadow-hover: 0 12px 28px rgba(121, 82, 179, 0.16);
      --radius-lg: 20px;
      --radius-sm: 10px;
      --transition: all 0.28s ease;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

    /* 宽度与布局容器规范 */
    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }

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

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

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

    .brand-text {
      font-weight: 800;
      font-size: 20px;
      background: linear-gradient(135deg, var(--candy-pink), var(--candy-purple));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

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

    .nav-links li a {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      padding: 8px 12px;
      border-radius: 8px;
      transition: var(--transition);
      display: inline-block;
    }

    .nav-links li a:hover {
      color: var(--candy-pink);
      background-color: #fff1f5;
    }

    .nav-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: 700;
      border-radius: 30px;
      cursor: pointer;
      border: none;
      transition: var(--transition);
      text-align: center;
    }

    .btn-candy {
      background: linear-gradient(135deg, var(--candy-pink), var(--candy-purple));
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(255, 107, 139, 0.35);
    }

    .btn-candy:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 107, 139, 0.45);
    }

    .btn-outline {
      background: #ffffff;
      border: 2px solid var(--candy-purple);
      color: var(--candy-purple);
    }

    .btn-outline:hover {
      background: var(--candy-purple);
      color: #ffffff;
      transform: translateY(-2px);
    }

    .btn-cyan {
      background: linear-gradient(135deg, var(--candy-cyan), var(--candy-blue));
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(0, 180, 216, 0.3);
    }

    .btn-cyan:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(0, 180, 216, 0.4);
    }

    /* 移动端菜单按钮 */
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 26px;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 首屏 Hero 无图片要求：使用缤纷纯色与CSS卡片渲染 */
    .hero-section {
      padding: 70px 0 60px;
      background: radial-gradient(circle at 10% 20%, #ffeef2 0%, #f4f0ff 45%, #e8f7ff 100%);
      border-bottom: 1px solid var(--border-color);
      position: relative;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }

    .hero-content h1 {
      font-size: 38px;
      line-height: 1.25;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 20px;
    }

    .hero-content h1 span {
      background: linear-gradient(135deg, var(--candy-pink), var(--candy-purple));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-tag {
      display: inline-block;
      padding: 6px 14px;
      background: #ffe5ec;
      color: var(--candy-pink);
      font-weight: 700;
      font-size: 13px;
      border-radius: 20px;
      margin-bottom: 16px;
      border: 1px solid #ffccd7;
    }

    .hero-desc {
      font-size: 17px;
      color: var(--text-muted);
      margin-bottom: 30px;
      line-height: 1.7;
    }

    .hero-btn-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 32px;
    }

    .hero-highlights {
      display: flex;
      gap: 24px;
      flex-wrap: wrap;
    }

    .hl-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
    }

    .hl-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--candy-green);
    }

    .hero-css-board {
      background: #ffffff;
      border: 2px solid #ecdcf5;
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: 0 15px 35px rgba(121, 82, 179, 0.12);
    }

    .board-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
      padding-bottom: 14px;
      border-bottom: 1px solid #f3e8f8;
    }

    .board-title {
      font-size: 16px;
      font-weight: 800;
      color: var(--candy-purple);
    }

    .board-badge {
      font-size: 12px;
      background: #e8fcf6;
      color: var(--candy-green);
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 12px;
    }

    .model-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 22px;
    }

    .model-pill {
      font-size: 12px;
      padding: 6px 12px;
      background: #f7f4fb;
      border: 1px solid #ede3f5;
      border-radius: 16px;
      color: var(--text-main);
      font-weight: 600;
    }

    .stat-mini-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
    }

    .stat-mini-box {
      background: #fdfafd;
      padding: 14px;
      border-radius: var(--radius-sm);
      border-left: 4px solid var(--candy-pink);
    }

    .stat-mini-box:nth-child(2) {
      border-left-color: var(--candy-blue);
    }

    .stat-mini-box:nth-child(3) {
      border-left-color: var(--candy-orange);
    }

    .stat-mini-box:nth-child(4) {
      border-left-color: var(--candy-green);
    }

    .stat-num {
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
    }

    .stat-lbl {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 通用区块排版 */
    .section-wrap {
      padding: 70px 0;
      border-bottom: 1px solid #f3ebf7;
    }

    .section-head {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 46px;
    }

    .section-subtitle {
      font-size: 13px;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--candy-purple);
      font-weight: 800;
      margin-bottom: 8px;
    }

    .section-head h2 {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .section-head p {
      font-size: 15px;
      color: var(--text-muted);
    }

    /* 平台核心卡片与服务网格 */
    .candy-card-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 22px;
    }

    .service-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      padding: 26px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: #ffd6e0;
    }

    .card-icon-bubble {
      width: 48px;
      height: 48px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 18px;
      background: #fff0f4;
      color: var(--candy-pink);
    }

    .service-card:nth-child(2) .card-icon-bubble {
      background: #f0f4ff;
      color: var(--candy-blue);
    }

    .service-card:nth-child(3) .card-icon-bubble {
      background: #fdf5e6;
      color: var(--candy-orange);
    }

    .service-card:nth-child(4) .card-icon-bubble {
      background: #e8fcf6;
      color: var(--candy-green);
    }

    .service-card h3 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .service-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 图文混排展示区 */
    .media-block-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
      margin-bottom: 40px;
    }

    .media-block-grid.reverse {
      grid-template-columns: 1fr 1fr;
      direction: rtl;
    }

    .media-block-grid.reverse .media-text {
      direction: ltr;
    }

    .media-img-box {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 2px solid #ecdcf5;
      box-shadow: var(--shadow-sm);
      background: #ffffff;
    }

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

    .media-text h3 {
      font-size: 26px;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .media-text p {
      font-size: 15px;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.7;
    }

    .feature-list {
      list-style: none;
      margin-bottom: 24px;
    }

    .feature-list li {
      position: relative;
      padding-left: 24px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .feature-list li::before {
      content: "✔";
      position: absolute;
      left: 0;
      color: var(--candy-green);
      font-weight: 900;
    }

    /* 评测与对比表格板块 */
    .review-score-panel {
      background: linear-gradient(135deg, #fff7f9, #f7f3ff);
      border-radius: var(--radius-lg);
      border: 1px solid #ffd6e0;
      padding: 30px;
      margin-bottom: 30px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 20px;
    }

    .score-left h3 {
      font-size: 22px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .star-badges {
      color: #ff9f1c;
      font-size: 20px;
      letter-spacing: 2px;
    }

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

    .score-big {
      font-size: 54px;
      font-weight: 900;
      color: var(--candy-pink);
      line-height: 1;
    }

    .score-scale {
      font-size: 18px;
      color: var(--text-muted);
      font-weight: 600;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f2e9f7;
    }

    .compare-table th {
      background: #faf6fd;
      color: var(--text-main);
      font-weight: 800;
    }

    .highlight-col {
      background: #fffbfe;
      font-weight: 700;
      color: var(--candy-purple);
    }

    /* 流程步骤 */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 20px;
      position: relative;
    }

    .flow-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 24px;
      border: 1px solid var(--border-color);
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-badge {
      font-size: 13px;
      font-weight: 900;
      color: #ffffff;
      background: linear-gradient(135deg, var(--candy-pink), var(--candy-orange));
      padding: 4px 10px;
      border-radius: 12px;
      display: inline-block;
      margin-bottom: 12px;
    }

    .flow-card h4 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 8px;
    }

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

    /* 用户评论卡片 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .reviewer-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 14px;
    }

    .reviewer-info h4 {
      font-size: 16px;
      font-weight: 800;
      color: var(--text-main);
    }

    .reviewer-info span {
      font-size: 13px;
      color: var(--candy-purple);
      font-weight: 600;
    }

    .review-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* FAQ 折叠 */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item.active {
      border-color: #ffd6e0;
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      padding: 18px 22px;
      font-weight: 700;
      font-size: 16px;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-icon {
      font-size: 18px;
      transition: transform 0.2s ease;
      color: var(--candy-pink);
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background: #fffcfd;
    }

    .faq-answer-inner {
      padding: 0 22px 18px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 表单与需求匹配 */
    .form-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      max-width: 760px;
      margin: 0 auto;
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
      margin-bottom: 18px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .form-group.full-width {
      grid-column: span 2;
    }

    .form-group label {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid #dfd4e6;
      border-radius: 10px;
      font-size: 14px;
      outline: none;
      transition: var(--transition);
      background-color: #faf8fb;
    }

    .form-control:focus {
      border-color: var(--candy-purple);
      background-color: #ffffff;
      box-shadow: 0 0 0 3px rgba(121, 82, 179, 0.15);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }

    /* 资讯与友情链接 */
    .article-links, .friend-links-box {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 14px;
    }

    .article-link-pill, .friend-link-pill {
      font-size: 13px;
      padding: 6px 14px;
      background: #ffffff;
      border: 1px solid #ebdfee;
      border-radius: 18px;
      color: var(--text-main);
      font-weight: 600;
      transition: var(--transition);
    }

    .article-link-pill:hover, .friend-link-pill:hover {
      background: var(--candy-purple);
      color: #ffffff;
      border-color: var(--candy-purple);
    }

    /* 页脚规范：深色文字配浅色背景，显式指定 */
    .site-footer {
      background-color: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 24px;
      color: var(--text-main);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 36px;
    }

    .footer-col h4 {
      font-size: 16px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .footer-col p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 6px;
    }

    .footer-qrcode-wrap {
      max-width: 110px;
      border: 1px solid #ecdcf5;
      padding: 4px;
      border-radius: 8px;
      background: #ffffff;
    }

    .footer-bottom {
      border-top: 1px solid #f2e9f7;
      padding-top: 20px;
      text-align: center;
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 浮动工具栏 */
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
      border: 1px solid #ecdcf5;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-size: 18px;
      color: var(--candy-purple);
      transition: var(--transition);
      position: relative;
    }

    .float-btn:hover {
      background: var(--candy-purple);
      color: #ffffff;
      transform: scale(1.05);
    }

    .float-qr-hover {
      display: none;
      position: absolute;
      right: 58px;
      bottom: 0;
      width: 140px;
      background: #ffffff;
      border: 1px solid #e0d0eb;
      padding: 8px;
      border-radius: 10px;
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
      text-align: center;
    }

    .float-btn:hover .float-qr-hover {
      display: block;
    }

    /* 移动端自适应 */
    @media (max-width: 992px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .media-block-grid, .media-block-grid.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
    }

    @media (max-width: 768px) {
      .mobile-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
        text-align: center;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-content h1 {
        font-size: 28px;
      }
    }