/* 全局糖果亮色系设计系统 */
    :root {
      --candy-pink: #ff5e97;
      --candy-purple: #845ef7;
      --candy-blue: #339af0;
      --candy-cyan: #20c997;
      --candy-yellow: #ffd43b;
      --candy-orange: #ff922b;
      --bg-light: #faf8ff;
      --bg-surface: #ffffff;
      --text-main: #2b2c34;
      --text-muted: #646b82;
      --border-color: #f1e9fa;
      --shadow-sm: 0 4px 14px rgba(132, 94, 247, 0.08);
      --shadow-md: 0 10px 25px rgba(132, 94, 247, 0.12);
      --shadow-hover: 0 16px 32px rgba(255, 94, 151, 0.18);
      --radius-sm: 10px;
      --radius-md: 18px;
      --radius-lg: 24px;
      --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    }

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

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-light);
      background-image: 
        radial-gradient(at 10% 10%, rgba(255, 94, 151, 0.05) 0px, transparent 50%),
        radial-gradient(at 90% 20%, rgba(132, 94, 247, 0.05) 0px, transparent 50%),
        radial-gradient(at 50% 80%, rgba(51, 154, 240, 0.05) 0px, transparent 50%);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

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

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

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部导航 */
    .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-color);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .ai-page-logo {
      height: 38px;
      width: auto;
    }
    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      background: linear-gradient(135deg, var(--candy-purple), var(--candy-pink));
      -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: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      transition: all 0.2s ease;
    }
    .nav-links li a:hover,
    .ai-page-home-link:hover {
      color: var(--candy-pink);
      background: rgba(255, 94, 151, 0.08);
    }
    .header-cta-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      font-size: 0.95rem;
      font-weight: 700;
      color: #fff;
      background: linear-gradient(135deg, var(--candy-pink), var(--candy-purple));
      border-radius: 50px;
      box-shadow: 0 4px 15px rgba(255, 94, 151, 0.3);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }
    .header-cta-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 94, 151, 0.4);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 首屏 Hero (严格纯CSS无图设计) */
    .hero-section {
      padding: 70px 0 50px;
      text-align: center;
      position: relative;
    }
    .candy-badge {
      display: inline-block;
      padding: 6px 18px;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--candy-purple);
      background: #f1ebff;
      border: 1px solid #dcd0ff;
      border-radius: 50px;
      margin-bottom: 20px;
    }
    .hero-title {
      font-size: 2.5rem;
      font-weight: 900;
      line-height: 1.25;
      color: #1e1f24;
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }
    .hero-title span {
      background: linear-gradient(135deg, #ff416c, #8a2387);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.125rem;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 32px;
      line-height: 1.7;
    }
    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }
    .btn-main-official {
      padding: 14px 34px;
      font-size: 1.05rem;
      font-weight: 700;
      color: #fff;
      background: linear-gradient(135deg, #ff5e97, #845ef7);
      border-radius: 50px;
      box-shadow: 0 8px 25px rgba(255, 94, 151, 0.35);
      transition: all 0.25s ease;
    }
    .btn-main-official:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 12px 30px rgba(255, 94, 151, 0.45);
    }
    .btn-sub-action {
      padding: 14px 30px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      background: #ffffff;
      border: 2px solid #e5dbff;
      border-radius: 50px;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }
    .btn-sub-action:hover {
      background: #f8f6ff;
      border-color: var(--candy-purple);
      color: var(--candy-purple);
    }

    /* 首屏数据指标卡 */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      margin-top: 20px;
    }
    .stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px 16px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s ease;
    }
    .stat-card:hover {
      transform: translateY(-4px);
    }
    .stat-num {
      font-size: 1.9rem;
      font-weight: 900;
      margin-bottom: 4px;
    }
    .c-pink { color: var(--candy-pink); }
    .c-purple { color: var(--candy-purple); }
    .c-blue { color: var(--candy-blue); }
    .c-cyan { color: var(--candy-cyan); }
    .stat-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* 公共Section规范 */
    .section-wrap {
      padding: 70px 0;
      position: relative;
    }
    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 44px;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 800;
      text-transform: uppercase;
      padding: 4px 12px;
      border-radius: 20px;
      background: rgba(132, 94, 247, 0.1);
      color: var(--candy-purple);
      margin-bottom: 10px;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: #1f2026;
      margin-bottom: 12px;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
    }

    /* 平台核心模型跑马灯标签 */
    .model-pills-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-bottom: 30px;
    }
    .model-pill {
      padding: 6px 14px;
      font-size: 0.85rem;
      font-weight: 600;
      background: #ffffff;
      border: 1px solid #ebdfff;
      border-radius: 50px;
      color: #495057;
      box-shadow: 0 2px 6px rgba(0,0,0,0.03);
    }

    /* 卡片网格 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .candy-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
    }
    .candy-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: #ffd0e2;
    }
    .card-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .bg-icon-pink { background: #ffe3ec; color: var(--candy-pink); }
    .bg-icon-purple { background: #ede7ff; color: var(--candy-purple); }
    .bg-icon-blue { background: #e3f2fd; color: var(--candy-blue); }
    .bg-icon-cyan { background: #e6fcf5; color: var(--candy-cyan); }
    .bg-icon-yellow { background: #fff9db; color: #f59f00; }
    .bg-icon-orange { background: #ffe8cc; color: var(--candy-orange); }

    .card-title {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: #212529;
    }
    .card-text {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 视觉插图区域（首屏后展示） */
    .media-card {
      background: #fff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .media-card-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: #f1f3f5;
    }
    .media-card-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    .media-card:hover .media-card-img-wrap img {
      transform: scale(1.04);
    }
    .media-card-body {
      padding: 20px;
    }

    /* 对比评测表格与卡片 */
    .review-score-banner {
      background: linear-gradient(135deg, #fff0f6, #f3f0ff);
      border: 2px solid #fcc2d7;
      border-radius: var(--radius-lg);
      padding: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
      flex-wrap: wrap;
      gap: 20px;
    }
    .score-left h3 {
      font-size: 1.4rem;
      font-weight: 800;
      color: #c2255c;
      margin-bottom: 6px;
    }
    .score-stars {
      color: #ff922b;
      font-size: 1.2rem;
      margin-left: 8px;
    }
    .score-box {
      text-align: right;
    }
    .score-big {
      font-size: 2.6rem;
      font-weight: 900;
      color: var(--candy-pink);
    }
    .score-max {
      font-size: 1rem;
      color: var(--text-muted);
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #fff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }
    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f1f3f5;
    }
    .compare-table th {
      background: #faf8ff;
      font-weight: 700;
      color: #495057;
    }
    .compare-table tr:hover td {
      background: #fffafc;
    }
    .tag-best {
      display: inline-block;
      padding: 4px 10px;
      font-size: 0.8rem;
      font-weight: 700;
      color: #fff;
      background: var(--candy-pink);
      border-radius: 20px;
    }

    /* 流程步骤 */
    .step-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      position: relative;
    }
    .step-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px;
      text-align: center;
      position: relative;
    }
    .step-badge {
      width: 36px;
      height: 36px;
      margin: 0 auto 12px;
      border-radius: 50%;
      background: var(--candy-purple);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 0.95rem;
    }

    /* 评论卡片 */
    .testimonial-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: var(--shadow-sm);
    }
    .testimonial-text {
      font-size: 0.95rem;
      color: #495057;
      margin-bottom: 16px;
      line-height: 1.6;
    }
    .user-info {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .user-avatar-tag {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--candy-pink), var(--candy-yellow));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
    }
    .user-meta h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: #212529;
    }
    .user-meta p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 表单区域 */
    .form-wrapper {
      background: #ffffff;
      border: 2px solid #ebdfff;
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
      max-width: 800px;
      margin: 0 auto;
    }
    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-bottom: 16px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group.full-width {
      grid-column: span 2;
    }
    .form-label {
      font-size: 0.9rem;
      font-weight: 700;
      color: #343a40;
    }
    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 14px;
      font-size: 0.95rem;
      border: 1px solid #dee2e6;
      border-radius: var(--radius-sm);
      outline: none;
      transition: border-color 0.2s ease;
      background: #fafafa;
    }
    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--candy-purple);
      background: #fff;
    }
    .form-textarea {
      resize: vertical;
      min-height: 100px;
    }
    .btn-submit {
      width: 100%;
      padding: 14px;
      font-size: 1.05rem;
      font-weight: 700;
      color: #fff;
      background: linear-gradient(135deg, var(--candy-pink), var(--candy-purple));
      border: none;
      border-radius: 50px;
      cursor: pointer;
      box-shadow: 0 6px 20px rgba(255, 94, 151, 0.3);
      transition: transform 0.2s ease;
    }
    .btn-submit:hover {
      transform: translateY(-2px);
    }

    /* FAQ 手风琴面板 */
    .faq-list {
      max-width: 840px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      padding: 18px 22px;
      font-size: 1.02rem;
      font-weight: 700;
      color: #212529;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      background: #ffffff;
    }
    .faq-question:hover {
      background: #faf8ff;
      color: var(--candy-purple);
    }
    .faq-toggle-icon {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--candy-pink);
      transition: transform 0.25s ease;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #faf8ff;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.7;
      padding: 0 22px;
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 16px 22px;
      border-top: 1px dashed #e9ecef;
    }

    /* 文章外链与友情链接 */
    .tag-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 16px;
    }
    .tag-link-item {
      padding: 8px 16px;
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: 50px;
      font-size: 0.88rem;
      font-weight: 600;
      color: #495057;
      box-shadow: var(--shadow-sm);
      transition: all 0.2s ease;
    }
    .tag-link-item:hover {
      background: var(--candy-purple);
      color: #fff;
      border-color: var(--candy-purple);
    }

    /* 联系我们与客服二维码展示 */
    .contact-card-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: var(--shadow-sm);
      gap: 30px;
      flex-wrap: wrap;
    }
    .contact-info-list {
      flex: 1;
      min-width: 260px;
    }
    .contact-info-item {
      margin-bottom: 12px;
      font-size: 0.95rem;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .contact-qr-wrap {
      text-align: center;
      background: #faf8ff;
      padding: 16px;
      border-radius: var(--radius-md);
      border: 1px dashed #dcd0ff;
    }
    .contact-qr-wrap img {
      width: 130px;
      height: 130px;
      border-radius: var(--radius-sm);
      margin: 0 auto 8px;
    }
    .contact-qr-label {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--candy-purple);
    }

    /* 页脚设计 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 40px 0 20px;
      margin-top: 50px;
    }
    .footer-content-wrap {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 30px;
    }
    .footer-col h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: #212529;
      margin-bottom: 14px;
    }
    .footer-col p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-links-list a {
      font-size: 0.9rem;
      color: var(--text-muted);
      transition: color 0.2s ease;
    }
    .footer-links-list a:hover {
      color: var(--candy-pink);
    }
    .friend-links-bar {
      border-top: 1px solid #f1f3f5;
      padding-top: 18px;
      margin-top: 18px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 14px;
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    .friend-links-bar a {
      color: #495057;
      text-decoration: none;
    }
    .friend-links-bar a:hover {
      color: var(--candy-purple);
    }
    .footer-bottom {
      border-top: 1px solid #f8f9fa;
      padding-top: 16px;
      text-align: center;
      font-size: 0.85rem;
      color: #adb5bd;
    }

    /* 悬浮客服面板 */
    .floating-support {
      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: #fff;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 15px rgba(0,0,0,0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      color: var(--candy-purple);
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .float-btn:hover {
      background: var(--candy-pink);
      color: #fff;
      transform: scale(1.08);
    }

    /* 响应式断点 */
    @media (max-width: 992px) {
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3, .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .step-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-content-wrap {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 16px 20px;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li {
        width: 100%;
        text-align: center;
      }
      .nav-links li a {
        display: block;
        padding: 10px;
      }
      .hero-title {
        font-size: 1.85rem;
      }
      .hero-stats-grid {
        grid-template-columns: 1fr;
      }
      .grid-3, .grid-2, .grid-4 {
        grid-template-columns: 1fr;
      }
      .step-grid {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .review-score-banner {
        flex-direction: column;
        align-items: flex-start;
      }
    }