:root {
      --primary: #e60067;
      --primary-hover: #c40057;
      --primary-light: #fff0f5;
      --primary-gradient: linear-gradient(135deg, #e60067 0%, #ff2a85 50%, #ff6b9d 100%);
      --accent: #ff4081;
      --text-main: #1f2937;
      --text-muted: #4b5563;
      --text-light: #9ca3af;
      --bg-base: #faf8f9;
      --bg-card: #ffffff;
      --border-color: #fce4ec;
      --border-hover: #f8bbd0;
      --shadow-sm: 0 4px 6px -1px rgba(230, 0, 103, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(230, 0, 103, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
      --shadow-lg: 0 20px 30px -10px rgba(230, 0, 103, 0.12);
      --radius: 12px;
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * {
      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-base);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }

    ul, ol {
      list-style: none;
    }

    .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-color: rgba(255, 255, 255, 0.96);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

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

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

    .brand-logo-wrap {
      max-width: 140px;
      display: flex;
      align-items: center;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }

    .nav-item {
      padding: 8px 12px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      border-radius: 6px;
      white-space: nowrap;
    }

    .nav-item:hover {
      color: var(--primary);
      background-color: var(--primary-light);
    }

    .nav-actions {
      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: 600;
      border-radius: 8px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      text-align: center;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--primary-gradient);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(230, 0, 103, 0.28);
    }

    .btn-primary:hover {
      box-shadow: 0 6px 18px rgba(230, 0, 103, 0.4);
      transform: translateY(-2px);
      color: #ffffff;
    }

    .btn-outline {
      background: #ffffff;
      border-color: var(--primary);
      color: var(--primary);
    }

    .btn-outline:hover {
      background-color: var(--primary-light);
      transform: translateY(-2px);
    }

    .btn-sm {
      padding: 6px 14px;
      font-size: 0.85rem;
    }

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

    .nav-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--text-main);
      margin: 5px 0;
      transition: var(--transition);
    }

    /* 首屏 Hero（无图片） */
    .hero-section {
      padding: 80px 0 60px;
      background: radial-gradient(circle at 80% 20%, #ffe4ec 0%, #ffffff 70%);
      border-bottom: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }

    .hero-content {
      text-align: center;
      max-width: 860px;
      margin: 0 auto;
    }

    .badge-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background-color: var(--primary-light);
      color: var(--primary);
      padding: 6px 16px;
      border-radius: 9999px;
      font-size: 0.88rem;
      font-weight: 600;
      border: 1px solid #f8bbd0;
      margin-bottom: 24px;
    }

    .hero-title {
      font-size: 2.75rem;
      font-weight: 800;
      color: #111827;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      margin-bottom: 36px;
      line-height: 1.7;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .hero-features-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

    .feature-stat-item {
      text-align: center;
      border-right: 1px dashed var(--border-color);
    }

    .feature-stat-item:last-child {
      border-right: none;
    }

    .stat-title {
      font-size: 1.4rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 4px;
    }

    .stat-sub {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 通用版块规范 */
    .section-wrap {
      padding: 80px 0;
      border-bottom: 1px solid #f3e5eb;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px;
    }

    .section-subhead {
      color: var(--primary);
      font-size: 0.9rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 8px;
      display: block;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: #111827;
      margin-bottom: 14px;
    }

    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
    }

    /* 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: 32px;
      align-items: center;
    }

    .card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .card:hover {
      border-color: var(--border-hover);
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }

    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      font-weight: bold;
      margin-bottom: 18px;
    }

    .card-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: #111827;
      margin-bottom: 10px;
    }

    .card-text {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
      flex-grow: 1;
    }

    /* 平台介绍 */
    .about-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }

    .about-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-top: 24px;
    }

    .about-list-item {
      display: flex;
      gap: 12px;
      align-items: flex-start;
    }

    .about-dot {
      width: 8px;
      height: 8px;
      background: var(--primary);
      border-radius: 50%;
      margin-top: 8px;
      flex-shrink: 0;
    }

    /* 模型矩阵与标签云 */
    .model-tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 24px;
    }

    .model-tag {
      background: #ffffff;
      border: 1px solid #f8bbd0;
      padding: 6px 14px;
      border-radius: 6px;
      font-size: 0.88rem;
      font-weight: 500;
      color: var(--text-main);
      transition: var(--transition);
    }

    .model-tag:hover {
      background: var(--primary-gradient);
      color: #ffffff;
      border-color: transparent;
      transform: translateY(-2px);
    }

    /* 流程步骤 */
    .step-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      position: relative;
    }

    .step-num {
      font-size: 2rem;
      font-weight: 800;
      color: #ffd1dc;
      line-height: 1;
      margin-bottom: 12px;
    }

    /* 案例中心图文 */
    .media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    .media-card-img {
      width: 100%;
      aspect-ratio: 16/9;
      background: #fdf2f4;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

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

    .media-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

    .media-card:hover .media-card-img img {
      transform: scale(1.03);
    }

    .media-card-body {
      padding: 20px;
      flex-grow: 1;
    }

    /* 对比评测专属表格 */
    .rating-highlight {
      background: #ffffff;
      border: 2px solid var(--primary);
      border-radius: var(--radius);
      padding: 30px;
      text-align: center;
      margin-bottom: 36px;
      box-shadow: var(--shadow-sm);
    }

    .score-large {
      font-size: 3.5rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
      margin: 10px 0;
    }

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

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

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

    .compare-table th {
      background: #fff5f8;
      font-weight: 700;
      color: #111827;
    }

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

    .badge-win {
      color: var(--primary);
      font-weight: 700;
    }

    /* 用户评论卡片 */
    .comment-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .comment-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 18px;
    }

    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.1rem;
    }

    /* FAQ 手风琴 */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

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

    .faq-question {
      padding: 18px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
      font-size: 1.05rem;
      color: #111827;
    }

    .faq-question:hover {
      color: var(--primary);
    }

    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.25s;
    }

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

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

    .faq-answer-inner {
      padding: 0 24px 20px;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.7;
    }

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

    .article-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      transition: var(--transition);
    }

    .article-card:hover {
      border-color: var(--primary);
      transform: translateY(-3px);
    }

    .article-meta {
      font-size: 0.85rem;
      color: var(--text-light);
      margin-bottom: 8px;
    }

    /* 表单与联系我们 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 40px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }

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

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid #d1d5db;
      border-radius: 8px;
      font-size: 0.95rem;
      transition: var(--transition);
      background: #ffffff;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(230, 0, 103, 0.15);
    }

    .contact-info-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 24px;
    }

    .contact-info-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
      color: var(--text-muted);
    }

    .qr-container {
      width: 140px;
      padding: 8px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
    }

    .qr-container img {
      width: 100%;
      height: auto;
      display: block;
    }

    /* 页脚与友情链接 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 40px 0 24px;
      color: var(--text-muted);
      font-size: 0.9rem;
    }

    .footer-links-row {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 24px;
      padding-bottom: 20px;
      border-bottom: 1px solid #f3e5eb;
    }

    .footer-links-row a {
      color: var(--text-muted);
    }

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

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      color: var(--text-light);
    }

    /* 浮动客服入口与返回顶部 */
    .float-panel {
      position: fixed;
      right: 20px;
      bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }

    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-md);
      cursor: pointer;
      transition: var(--transition);
      position: relative;
    }

    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
    }

    .float-qr-pop {
      position: absolute;
      right: 56px;
      bottom: 0;
      width: 150px;
      padding: 10px;
      background: #ffffff;
      border-radius: 8px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-lg);
      display: none;
      text-align: center;
      font-size: 0.8rem;
      color: var(--text-main);
    }

    .float-qr-pop img {
      width: 100%;
      height: auto;
      margin-bottom: 4px;
    }

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

    /* 响应式调整 */
    @media (max-width: 992px) {
      .grid-4, .hero-features-bar, .step-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3, .article-list {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links, .nav-actions .btn-outline {
        display: none;
      }
      .nav-toggle {
        display: block;
      }
      .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 16px 20px;
        box-shadow: var(--shadow-md);
      }
      .hero-title {
        font-size: 2rem;
      }
      .grid-3, .grid-4, .grid-2, .hero-features-bar, .step-grid, .article-list, .about-list {
        grid-template-columns: 1fr;
      }
      .feature-stat-item {
        border-right: none;
        border-bottom: 1px dashed var(--border-color);
        padding-bottom: 12px;
      }
      .feature-stat-item:last-child {
        border-bottom: none;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }