:root {
      --candy-pink: #FF6B8B;
      --candy-coral: #FFA07A;
      --candy-mint: #2EC4B6;
      --candy-yellow: #FFD166;
      --candy-blue: #4EA8DE;
      --candy-purple: #9D4EDD;
      --bg-cream: #FCFAF7;
      --bg-card: #FFFFFF;
      --bg-subtle: #F6F8FD;
      --text-main: #242938;
      --text-muted: #5C677D;
      --border-light: #EBEFF8;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --shadow-sm: 0 4px 12px rgba(100, 116, 139, 0.06);
      --shadow-hover: 0 12px 28px rgba(78, 168, 222, 0.16);
      --container-max: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-cream);
      color: var(--text-main);
      line-height: 1.6;
    }

    body {
      overflow-x: hidden;
      background: radial-gradient(circle at 10% 10%, rgba(255, 209, 102, 0.15), transparent 40%),
                  radial-gradient(circle at 90% 20%, rgba(255, 107, 139, 0.12), transparent 45%),
                  radial-gradient(circle at 50% 80%, rgba(46, 196, 182, 0.12), transparent 50%),
                  var(--bg-cream);
      background-attachment: fixed;
    }

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

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

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

    /* 顶部导航 */
    header.site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
      box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    }

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

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

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

    .brand-title {
      font-size: 1.3rem;
      font-weight: 800;
      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 {
      padding: 8px 14px;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-main);
      border-radius: 20px;
    }

    .nav-links li a:hover {
      color: var(--candy-pink);
      background-color: rgba(255, 107, 139, 0.08);
    }

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

    .btn-candy {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      padding: 10px 22px;
      border-radius: 30px;
      cursor: pointer;
      border: none;
      transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    }

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

    .btn-candy-primary:hover {
      transform: translateY(-2px) scale(1.02);
      box-shadow: 0 6px 18px rgba(255, 107, 139, 0.45);
    }

    .btn-candy-subtle {
      background: rgba(78, 168, 222, 0.12);
      color: var(--candy-blue);
    }

    .btn-candy-subtle:hover {
      background: rgba(78, 168, 222, 0.22);
      transform: translateY(-2px);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    .menu-toggle span {
      display: block;
      width: 24px;
      height: 3px;
      background-color: var(--text-main);
      margin: 4px 0;
      border-radius: 2px;
      transition: 0.3s;
    }

    /* 区域通用样式 */
    section {
      padding: 80px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }

    .badge-tag {
      display: inline-block;
      padding: 6px 16px;
      font-size: 0.82rem;
      font-weight: 700;
      letter-spacing: 0.5px;
      text-transform: uppercase;
      border-radius: 20px;
      background: linear-gradient(90deg, rgba(255, 107, 139, 0.15), rgba(78, 168, 222, 0.15));
      color: var(--candy-purple);
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.3;
    }

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

    /* 首屏纯CSS与排版打造糖果亮色科技感，坚决不含任何图片 */
    #hero {
      padding: 100px 0 80px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .hero-h1 {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 24px;
      color: #1A1F2C;
      letter-spacing: -0.5px;
    }

    .hero-highlight {
      background: linear-gradient(135deg, #FF5376 0%, #FF8A5B 50%, #9D4EDD 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-sub {
      font-size: 1.2rem;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 36px;
      font-weight: 400;
    }

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 20px;
      margin-bottom: 50px;
      flex-wrap: wrap;
    }

    .hero-cta-main {
      padding: 15px 36px;
      font-size: 1.1rem;
      border-radius: 40px;
    }

    .hero-badges-row {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px;
      max-width: 960px;
      margin: 0 auto 40px;
    }

    .model-chip {
      background: #FFFFFF;
      border: 1px solid rgba(78, 168, 222, 0.25);
      box-shadow: var(--shadow-sm);
      padding: 8px 16px;
      border-radius: 30px;
      font-size: 0.86rem;
      font-weight: 600;
      color: #334155;
      display: flex;
      align-items: center;
      gap: 6px;
      transition: transform 0.2s ease;
    }

    .model-chip:hover {
      transform: translateY(-3px);
      border-color: var(--candy-pink);
    }

    .model-chip-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--candy-mint);
    }

    /* 指标卡片 */
    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
    }

    .metric-card {
      background: #FFFFFF;
      padding: 24px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      border-top: 4px solid var(--candy-yellow);
      text-align: left;
      transition: transform 0.25s ease;
    }

    .metric-card:nth-child(2) { border-top-color: var(--candy-pink); }
    .metric-card:nth-child(3) { border-top-color: var(--candy-mint); }
    .metric-card:nth-child(4) { border-top-color: var(--candy-blue); }

    .metric-card:hover {
      transform: translateY(-4px);
    }

    .metric-num {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 4px;
    }

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

    /* 模块卡片网格 */
    .cards-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 24px;
    }

    .service-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      position: relative;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(255, 107, 139, 0.4);
    }

    .card-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 20px;
      font-weight: 800;
    }

    .card-icon-1 { background: rgba(255, 107, 139, 0.15); color: var(--candy-pink); }
    .card-icon-2 { background: rgba(78, 168, 222, 0.15); color: var(--candy-blue); }
    .card-icon-3 { background: rgba(46, 196, 182, 0.15); color: var(--candy-mint); }
    .card-icon-4 { background: rgba(255, 209, 102, 0.25); color: #E09F00; }
    .card-icon-5 { background: rgba(157, 78, 221, 0.15); color: var(--candy-purple); }
    .card-icon-6 { background: rgba(255, 160, 122, 0.2); color: #E76F51; }

    .service-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .service-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 流程时间线 */
    .workflow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-box {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid var(--border-light);
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-idx {
      font-size: 2.2rem;
      font-weight: 900;
      color: rgba(78, 168, 222, 0.25);
      line-height: 1;
      margin-bottom: 12px;
    }

    .step-box h4 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .step-box p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 评测与对比表格 */
    .rating-banner {
      background: linear-gradient(135deg, #FFF1F5 0%, #F0F7FF 100%);
      border: 2px solid #FFD4DF;
      border-radius: var(--radius-lg);
      padding: 36px;
      margin-bottom: 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }

    .rating-score-box {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .score-big {
      font-size: 3.5rem;
      font-weight: 900;
      color: var(--candy-pink);
      line-height: 1;
    }

    .score-stars {
      color: #FFB703;
      font-size: 1.5rem;
      letter-spacing: 2px;
    }

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

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

    .compare-table th, .compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-light);
      font-size: 0.95rem;
    }

    .compare-table th {
      background: #FAFCFF;
      font-weight: 700;
      color: var(--text-main);
    }

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

    .highlight-cell {
      color: var(--candy-pink);
      font-weight: 700;
      background: rgba(255, 107, 139, 0.04);
    }

    /* 案例展示与图文组合 */
    .showcase-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .showcase-item {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

    .showcase-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    .showcase-img-wrap {
      width: 100%;
      height: 220px;
      overflow: hidden;
      background-color: #F1F5F9;
    }

    .showcase-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .showcase-item:hover .showcase-img-wrap img {
      transform: scale(1.05);
    }

    .showcase-body {
      padding: 20px;
    }

    .showcase-body h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .showcase-body p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

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

    .testimonial-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-light);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testi-content {
      font-size: 0.95rem;
      color: var(--text-main);
      line-height: 1.65;
      margin-bottom: 20px;
    }

    .testi-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .user-avatar-tag {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--candy-yellow), var(--candy-coral));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      font-weight: 800;
      font-size: 1.1rem;
    }

    .user-meta h5 {
      font-size: 0.95rem;
      font-weight: 700;
    }

    .user-meta span {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* FAQ折叠面板 */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
      box-shadow: 0 2px 6px rgba(0,0,0,0.02);
    }

    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 24px;
      background: none;
      border: none;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      transition: background-color 0.2s ease;
    }

    .faq-question:hover {
      background-color: #F8FAFC;
    }

    .faq-icon {
      font-size: 1.2rem;
      color: var(--candy-blue);
      transition: transform 0.3s ease;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 24px;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      background-color: #FAFCFE;
      color: var(--text-muted);
      font-size: 0.94rem;
      line-height: 1.65;
    }

    .faq-item.active .faq-answer {
      padding: 16px 24px 22px;
      max-height: 220px;
    }

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

    /* 表单与联系板块 */
    .contact-layout {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-light);
    }

    .contact-info-side {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .info-list {
      list-style: none;
      margin: 24px 0;
    }

    .info-list li {
      margin-bottom: 16px;
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.95rem;
    }

    .info-icon {
      color: var(--candy-pink);
      font-weight: 800;
    }

    .qrcode-box {
      background: #FAFCFF;
      padding: 16px;
      border-radius: var(--radius-sm);
      display: inline-block;
      border: 1px dashed var(--candy-blue);
      max-width: 170px;
      text-align: center;
    }

    .qrcode-box img {
      width: 140px;
      height: 140px;
      margin: 0 auto 8px;
    }

    .qrcode-box span {
      font-size: 0.82rem;
      color: var(--text-muted);
      font-weight: 600;
    }

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

    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      background: #FDFEFE;
      transition: border-color 0.2s ease;
      outline: none;
    }

    .form-control:focus {
      border-color: var(--candy-pink);
      background: #FFFFFF;
    }

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

    /* 文章与外链 */
    .article-links-wrap {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 30px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }

    .article-chips {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 14px;
    }

    .article-link-item {
      background: var(--bg-subtle);
      border: 1px solid var(--border-light);
      padding: 8px 16px;
      border-radius: 20px;
      font-size: 0.88rem;
      color: var(--candy-blue);
      font-weight: 600;
    }

    .article-link-item:hover {
      background: var(--candy-blue);
      color: #FFFFFF;
    }

    /* 底部样式 */
    footer.site-footer {
      background-color: #1E2330;
      color: #BAC2D6;
      padding: 60px 0 24px;
      border-top: 4px solid var(--candy-pink);
    }

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

    .footer-col h4 {
      color: #FFFFFF;
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .footer-col p {
      font-size: 0.9rem;
      line-height: 1.7;
    }

    .footer-friend-links a {
      display: inline-block;
      margin-right: 14px;
      margin-bottom: 8px;
      color: #BAC2D6;
      font-size: 0.88rem;
      text-decoration: none;
    }

    .footer-friend-links a:hover {
      color: var(--candy-yellow);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #7D889E;
    }

    /* 浮动工具栏 */
    .float-tools {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .tool-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #FFFFFF;
      box-shadow: 0 4px 16px rgba(0,0,0,0.15);
      border: 1px solid var(--border-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      cursor: pointer;
      color: var(--candy-pink);
      transition: transform 0.25s ease;
    }

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

    /* 响应式断点 */
    @media (max-width: 992px) {
      .hero-metrics { grid-template-columns: repeat(2, 1fr); }
      .workflow-steps { grid-template-columns: repeat(2, 1fr); }
      .showcase-grid { grid-template-columns: repeat(2, 1fr); }
      .testimonial-grid { grid-template-columns: 1fr; }
      .contact-layout { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
    }

    @media (max-width: 768px) {
      .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);
      }
      .nav-links.active {
        display: flex;
      }
      .menu-toggle {
        display: block;
      }
      .hero-h1 {
        font-size: 2.1rem;
      }
      .section-title {
        font-size: 1.7rem;
      }
      .hero-metrics {
        grid-template-columns: 1fr;
      }
      .workflow-steps {
        grid-template-columns: 1fr;
      }
      .showcase-grid {
        grid-template-columns: 1fr;
      }
    }