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

    body {
      font-family: "Microsoft YaHei", sans-serif;
    }
    a{
      color:#000;
      text-decoration: none;
    }
    a:hover{
      color:#87ceeb;
    }
    .text-primary{
      color:#87ceeb;
    }

    .overlay, .header-phone,.mobile-menu{
  display: none;
}


    header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      /* 设置背景为透明 */
      background-color: transparent;
      /* 将header置于顶层 */
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      /* 添加过渡效果 */
      transition: background-color 0.6s ease;
    }

    /* 修改header-mask样式为渐变透明色 */
    .header-mask {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 160px;
      /* 使用线性渐变实现渐变透明效果 */
      background: linear-gradient(to bottom, rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0));
      z-index: 999;
      /* 添加过渡效果 */
      transition: opacity 0.3s ease;
    }

    .logo {
      display: flex;
      align-items: center;
    }

    nav ul {
      display: flex;
      list-style: none;
    }

    nav ul li {
      margin: 0 20px;
      position: relative;

    }

    nav ul li a {
      font-size: 20px;
      color: #fff;
      text-decoration: none;
      display: block;
      /* 使 a 标签成为块级元素 */
      padding-bottom: 10px;
      /* 为鼠标移动到子菜单提供空间 */
    }
    nav ul li a:hover {

  color: #87ceeb;
}

    /* 修改下拉菜单样式 */
    nav ul li ul {
      display: block;
      position: absolute;
      top: 51px;
      /* 下拉菜单距离页面顶部为100像素 */
      left: 0;
      background: rgba(0, 0, 0, 0.8);
      min-width: 150px;
      z-index: 1000;
      flex-direction: column;
      opacity: 0;
      visibility: hidden;
      transform: translateY(-10px);
      /* 添加过渡效果，让 opacity 和 transform 变化更平滑 */
      transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    }

    nav ul li ul li {
      margin: 0;
    }

    nav ul li ul li a {
      display: block;
      padding: 10px;
      font-size: 16px;
      color: #fff;
      /* 链接颜色为#87ceeb */
      text-decoration: none;
      transition: background-color 0.3s ease;
    }

    nav ul li ul li a:hover {
      background: rgba(0, 0, 0, 0.6);
    }

    nav ul li:hover ul {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    .toplink {
      margin-bottom: 10px;

    }

    .toplink a {
      color: #fff;
      text-decoration: none;
      font-size: 16px;
    }

    .banner {
      position: relative;
      width: 100%;
      height: 50vh;
      /* 设置高度为屏幕高度 */
      overflow: hidden;
    }

    .banner .slides {
      display: flex;
      width: 100%;
      height: 100%;
      transition: transform 0.5s ease-in-out;
    }

    .banner .slide {
      min-width: 100%;
      height: 100%;
    }

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

    .banner .prev,
    .banner .next {
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      font-size: 30px;
      cursor: pointer;
      z-index: 100;
      padding: 10px;
      /*background-color: rgba(0, 0, 0, 0.5);*/
      color: #fff;
    }

    .banner .prev {
      left: 10px;
    }

    .banner .next {
      right: 10px;
    }

    /* 新增圆点样式 */
    .dots {
      position: absolute;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      z-index: 100;
    }

    .dot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background-color: rgba(0, 0, 0, 0.2);
      margin: 0 5px;
      cursor: pointer;
      border: 1px solid #fff
    }

    .dot.active {
      background-color: rgba(135, 206, 235, 0.6);
    }

    

    .card-container {
      width: 1400px;
      margin: 0 auto;
      display: flex;
      gap: 20px;
      /*padding: 20px;*/
    }

    .card {
      width: 100%;
      background: #fff;
      
      display: flex;
      /* 添加阴影效果 */
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
      transition: box-shadow 0.3s ease;
    }

    .card:hover {
      background: #87ceeb;
    }
    .card a{
      display: flex;
      color:#000;
      text-decoration: none;
      padding: 20px;
      padding-bottom: 60px;
    }
    .card:hover a{
      color: #fff;
    }

    .card .riqi {
      width: 80px;
      height: 80px;
      margin-right: 20px;

    }

    .card .date {
      font-size: 35px;
      font-weight: bold;
      color: #87ceeb;
      text-align: center;
    }

    .card:hover .date {
      font-size: 35px;
      font-weight: bold;
      color: #fff;
      text-align: center;
    }

    .card .y-month {
      font-size: 12px;
      color: #87ceeb;
      margin-top: 4px;
      text-align: center;
    }
    .card:hover .y-month {
      font-size: 12px;
      color: #fff;
      margin-top: 4px;
      text-align: center;
    }

    .card .title {
      margin-top: 8px;
      font-size: 18px;
      line-height: 30px;
    }
    

    /* 最新动态区域样式 */
    .latest-news {
      display: flex;
      justify-content: space-between;
    }

    .jdtp {
      width: 49%;
    }

    .swiper {
      width: 100%;
      height: 600px;
      position: relative;
      /* 添加相对定位 */
    }

    .swiper-slide img {
      width: 100%;
      height: 400px;
      /* 设置图片高度 */
      object-fit: cover;
      display: block;
    }

    .swiper-slide h2 {
      margin-top: 20px;
      color: #000;

    }
    .swiper-slide h2 a {
      color: #000;
      text-decoration: none;
    }
    .swiper-slide h2 a:hover {
      color: #87ceeb;
      text-decoration: none;
    }

    .swiper-slide p {
      margin-top: 20px;
      color: #888;
      line-height: 24px;
      font-size: 14px;
    }

    /* 修改按钮样式使其垂直居中 */
    .swiper-button-prev,
    .swiper-button-next {
      top: 200px;
      /* 顶部距离为容器的50% */
      transform: translateY(-50%);
      /* 向上平移自身高度的50% */
      color: #fff;
    }

    /* 修改分页器圆点大小 */
    .swiper-pagination-bullet {
      width: 15px;
      /* 设置圆点宽度 */
      height: 15px;
      /* 设置圆点高度 */
    }

    /* 设置激活状态下分页圆点的颜色 */
    .swiper-pagination-bullet-active {
      background-color: #87ceeb;
    }

    /* 新闻资讯和通知公告区域通用样式 */
    .section {
      display: flex;
      justify-content: space-between;

    }

    .section h2 {
      font-size: 20px;
      margin-bottom: 20px;
      display: flex;
      align-items: center;
    }

    .section h2 i {
      margin-right: 10px;
    }

    .section .more {
      font-size: 14px;
      color: #87ceeb;
      text-decoration: none;
      align-self: center;
      margin-top: 20px;
    }

    .lanmu .more {
      font-size: 16px;
      text-decoration: none;
      float: right;
      margin-top: 20px;
      color:#000;
      position: absolute;
      right:0px;

    }
    .lanmu span{
      font-weight: bold;
    }


    .news-list {
      width: 49%;
    }


    .research i {
      color: #87ceeb;
      margin-right: 20px;
    }

    .news-item {
      
      /*margin-bottom: 20px;*/
      border-bottom: 1px solid #f0f0f0;
      
      transition: background-color 0.3s ease;
      /* 添加过渡效果 */
    }

    .news-item:hover {
      background: #87ceeb;
    }

    .news-item a{
      color:#000;
      display: flex;
      text-decoration: none;
      padding: 25px;
      padding-bottom: 29px;
      padding-left: 0px;
    }


    .news-item .date {
      width: 100px;
      text-align: center;
      margin-right: 15px;
      border-right: 1px solid #f0f0f0;
    }

    .news-item .date span,
    .news-item .date em {
      /* 将新闻资讯的日期颜色变成#87ceeb */
      color: #87ceeb;
    }

    .news-item:hover .date span,
    .news-item:hover .date em {
      /* 将新闻资讯的日期颜色变成#87ceeb */
      color: #ffffff;
    }

    .news-item .date span {
      display: block;
      font-size: 32px;
      font-weight: bold;
    }

    .news-item .date em {
      font-size: 12px;
      color: #000;
      font-style: normal;
    }

    .news-item .text {
      flex: 1;
    }

    .news-item .text {
      display: flex;
      align-items: center;
    }

    .news-item .text p {
      font-size: 18px;
      line-height: 30px;
      padding-left: 20px;

    }

    .news-item:hover .text p {
      font-size: 18px;
      line-height: 30px;
      color: #fff;

    }


    /* 返回顶部按钮样式 */
    #back-to-top {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: #87ceeb;
      color: #fff;
      padding: 10px 15px;
      border-radius: 5px;
      cursor: pointer;
      display: none;
    }

    .research {
      text-align: center;
      padding: 0px;
      width: 1400px;
      margin: 0 auto;
      margin-top: 60px;
      margin-bottom: 60px;
      position:relative;
    }

    .research .lanmu {
      font-size: 32px;
      position: relative;
    }

.lanmu::after {
    border: 1px solid #87ceeb;
    content: "";
    left: 0;
    bottom:-20px;
    margin: 0 auto;
    position: absolute;
    width: 60px;
    right: 0;
}

    .container-fluid {
      width: 100%;
      height: 1220px;
      background-image: url(bg1_03.jpg);

      background-position: top center;
      background-repeat: no-repeat;
    }

    /* 主体布局：左侧红色 banner + 右侧列表 */
    .main-container {
      display: flex;
      width: 1400px;
      margin: 0 auto;
      justify-content: space-between;

    }

    /* 左侧红色 banner 区域 */
    .left-banner {
      width: 49%;
      color: #fff;
      padding:30px;
      box-sizing: border-box;
      background: #0095cc;
    }

    .left-banner .motto {
      font-size: 16px;
      line-height: 1.8;
    }

    .left-banner .banner-img {
      width: 100%;
    }

    .left-banner .banner-img img {
      width: 100%;
      height:300px;
      display: block;
      object-fit: cover;
      /* 保持长宽比并覆盖容器 */
      display: block;
    }

    .banner-img-title {
      margin-top: 20px;
      margin-bottom: 15px;
    }


    .banner-img-title a {
      font-size: 18px;
      color: #fff;
      text-decoration: none;

    }

    .banner-img a:hover {
      font-size: 18px;
      color: #ffff00;
      text-decoration: none;
    }

    .banner-img-desc {
      font-size: 14px;
      color: #fff;
      margin-bottom: 15px;
      line-height: 1.6;
    }

    .banner-img-date {
      font-size: 12px;
      color: #fff;
    }

    /* 右侧学术动态列表区域 */
    .right-research {
      width: 49%;
      box-sizing: border-box;
    }

    .research-item {
      
      /*margin-bottom: 20px;*/
      border-bottom: 1px solid #f0f0f0;
      
      transition: background-color 0.3s ease;
      /* 添加过渡效果 */
    }

    .research-item:hover {
      background: #87ceeb;
    }

    .research-title{
      font-size: 18px;
      color: #000;
      margin-bottom: 20px;
    }
    .research-item:hover .research-title{
      font-size: 18px;
      color: #fff;
      margin-bottom: 20px;
    }
    
    .research-item a{
      text-decoration: none;
      color:#000;
      display: block;
      padding:25px;
      
    }

    .research-item:hover a{
      color: #fff;
    }
    .research-item:hover .research-desc{
      color: #fff;
    }
    .research-item:hover .research-date {
      font-size: 12px;
      color: #fff;
    }

    .research-item .research-desc {
      font-size: 14px;
      color: #888;
      margin-bottom: 15px;
      line-height: 1.6;
    }

    .research-item .research-date {
      font-size: 12px;
      color: #87ceeb;
    }

    .container {
      max-width: 1400px;
      margin: 0 auto;
    }


    .slide-content {
      padding: 15px;
      text-align: left;
      margin-top: 40px;
    }

    .slide-content h3 {
      margin: 0 0 10px;
      font-size: 18px;
      color: #333;
      margin-bottom: 60px;
    }

    .slide-content p {
      margin: 5px 0;
      font-size: 14px;
      color: #666;

    }


    /* 定义图标样式 */
    .slide-content i {
      color: #87ceeb;
      margin-right: 5px;
    }

    /* 底部样式 */
    .footer {

      color: #fff;
      padding-top: 40px;
      /*background-image: url(footbg.jpg);
      background-size: cover;
      background-position: top center;
      background-repeat: no-repeat;*/
      background: #035fa5;
      margin-top:60px;
    }


    .footer-link {
      font-size: 32px;

    }

    .quick-links {
      display: flex;
      justify-content: center;
      gap: 20px;
      margin-bottom: 20px;
    }

    .quick-links a {
      color: #fff;
      text-decoration: none;
      padding: 10px 20px;
      border: 1px solid #fff;
      border-radius: 20px;
    }

    .footer-info {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 20px;
      padding-top: 40px;
    }

    .logo-group {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .contact-info p {
      margin: 5px 0;
      line-height: 32px
    }

    .share-icons {
      display: flex;
      gap: 10px;
    }

    .share-icons img {
      height: 20px;
      /* 分享图标高度，可调整 */
    }

    .qr-code {
      text-align: center;
      margin-bottom: 20px;
    }

    .qr-code img {
      width: 80px;
      /* 二维码宽度，可调整 */
    }

    .copyright {
      text-align: center;


      background-color: #035fa5;
      padding: 10px 0px;
      color: #fff;
      border-top:1px solid #bbedff;
    }

    .xsgz-list {
      display: flex;
      justify-content: space-between;

    }

    .xsgz {
  width: calc(33% - 15px);
  overflow: hidden;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  transition: box-shadow 0.3s ease;
}
.xsgz a{
  color:#000;
  text-decoration: none;
  display: block;
  height:100%;
}
.xsgz:hover a{
  color:#000;
  text-decoration: none;
  display: block;
  height:100%;

}
.xsgz .img-mask{
  width: 100%;
  height: 300px;
  overflow: hidden;
}
.xsgz img {
  width: 100%;
  height: 300px; /* 固定高度 */
  object-fit: cover; /* 保持长宽比并覆盖容器 */
  display: block;
  transition: transform 0.3s ease; /* 添加过渡效果 */
  transform-origin: center center; /* 设置变换原点为中心 */
}

.xsgz:hover img {
  transform: scale(1.1);

}

.xsgz .xsgz-info {
  padding: 20px;
  transition: background-color 0.3s ease, color 0.3s ease; /* 添加过渡效果 */
}

.xsgz:hover .xsgz-info {
  background: #87ceeb;
  color: #fff;
}

.xsgz:hover {
  background: #87ceeb;
  color: #fff;
}

.xsgz:hover .xsgz-info p {
  color: #fff;
}

.xsgz .xsgz-info .xsgz-title {
  margin-bottom: 20px;
}


.xsgz .xsgz-info p {
  font-size: 14px;
  color: #999;
}

    .container1 {
      display: flex;
      justify-content: space-between;
      width: 1400px;
      margin: 0 auto;

      margin-bottom: 40px;
    }

    .column {
      width: 48%;
    }

    .btn_more {
      width: 100%;
      padding: 15px 40px;
      background-color: #87ceeb;
      color: white;
      border: none;
      border-radius: 5px;
      cursor: pointer;
      transition: background-color 0.3s ease;
      font-size: 16px;
      text-decoration: none;
      margin:0 auto;
    }

    .btn_more:hover {
      background-color: #59b1d5;
    }

    .kecheng {
      width: 10%;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 20px;
    }

    /* 新增按钮样式 */
    .kecheng .jpkc {
      width: 100%;
      padding: 20px 20px;
      background-color: #0e81c3;
      color: white;
      border: none;
      border-radius: 5px;
      cursor: pointer;
      transition: background-color 0.3s ease;
      font-size: 32px;
    }

    .kecheng .jpkc:hover {
      background-color: #dc3131;
    }

    .kecheng .zdkc {
      width: 100%;
      padding: 20px 20px;
      background-color: #0eb4ba;
      color: white;
      border: none;
      border-radius: 5px;
      cursor: pointer;
      transition: background-color 0.3s ease;
      font-size: 32px;
    }

    .kecheng .zdkc:hover {
      background-color: #dc5131;
    }


    

    /* tab 选项卡样式 */
    .tab-header {
      display: flex;
      margin-bottom: 20px;
      width: 100%;
      align-items: center;
    }

    .tab-header .tab {
      padding: 10px 20px;
      cursor: pointer;
      border-bottom: 2px solid transparent;
      font-size: 32px;
      font-weight: bold;
    }

    .tab-header .more {
      font-size: 16px;
      text-decoration: none;
      margin-left: auto;
      color: #000;
    }



    .tab-header .tab.active {
      border-bottom: 2px solid #87ceeb;
      color: #87ceeb;
    }

    .tab-content .tab-pane {
      display: none;
    }

    .tab-content .tab-pane ul {
      list-style: none;
      padding: 0;
    }

    .tab-content .tab-pane ul li {
      margin-bottom: 10px;
      border-bottom: 1px solid #ddd;
      height: 50px;
      line-height: 50px;
    }

    .tab-content .tab-pane ul li a {
      float: left;
      font-size: 18px;
      color: #000;
      text-decoration: none;
    }

    .tab-content .tab-pane ul li a:hover {
      color: #87ceeb;
    }

    .tab-content .tab-pane ul li span {
      float: right;
      color: #999;
    }

    .tab-content .tab-pane.active {
      display: block;
    }

    @media only screen and (min-width: 1600px) and (max-width: 1680px) {
      .logo img {
        width: 400px;
      }

      .logo-group img {
        width: 400px;
      }

      nav ul li {
        margin: 0 15px;
        position: relative;
      }

    }

    @media only screen and (min-width: 1440px) and (max-width: 1600px) {
      .logo img {
        width: 400px;
      }

      .logo-group img {
        width: 400px;
      }

      nav ul li {
        margin: 0 10px;
        position: relative;
      }

      nav ul li a {
        font-size: 18px;
        color: #fff;
        text-decoration: none;
        display: block;
        padding-bottom: 10px;
      }
    }

    @media only screen and (max-width: 1440px) {
      .logo img {
        width: 300px;
      }

      .logo-group img {
        width: 200px;
      }

      nav ul li {
        margin: 0 10px;
        position: relative;
      }

      nav ul li a {
        font-size: 16px;
        color: #fff;
        text-decoration: none;
        display: block;
        padding-bottom: 10px;
      }
    }




    /* 现有 CSS 内容 */

/* 媒体查询：手机屏幕（最大宽度 767px） */
@media only screen and (max-width: 767px) {
  /* 调整头部导航栏 */
  header {
    display: none;
  }
  .header-mask{
    display: none;
  }

  nav ul {
    flex-direction: column;
    text-align: center;
  }

  nav ul li {
    margin: 5px 0;
  }

  nav ul li ul {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: transparent;
    box-shadow: none;
  }

  nav ul li ul li a {
    padding: 5px;
  }

  /* 调整轮播图 */
  .banner {
    height: 30vh;
  }

  .latest-news {
      flex-direction: column;
    width: 100%;
    padding: 10px;
    }

  .jdtp {
      width: 100%;
    }

    .swiper {
      width: 100%;
      height: auto;
      position: relative;
      padding-bottom: 40px;
      /* 添加相对定位 */
    }

    .swiper-slide img {
      width: 100%;
      height: 240px;
      /* 设置图片高度 */
      object-fit: cover;
      display: block;
    }

    .left-banner .banner-img img {
      width: 100%;
      height:auto;
      display: block;
      object-fit: cover;
      /* 保持长宽比并覆盖容器 */
      display: block;
    }

  .news-list {
      width: 100%;
      /* 修改新闻资讯宽度为60% */
    }

  .container{
    width:100%;
  }

  .research {
      text-align: center;
      padding: 0px;
      width: 100%;
      margin: 0 auto;
      margin-top: 60px;
      margin-bottom: 60px;
      position:relative;
      padding:0px 10px;
    }


    .research .lanmu {
      font-size: 24px;
      position: relative;
    }

    .tab-header .tab {
      padding: 10px 10px;
      cursor: pointer;
      border-bottom: 2px solid transparent;
      font-size: 24px;
      font-weight: bold;
    }

  /* 调整卡片布局 */
  .card-container {
    flex-direction: column;
    width: 100%;
    padding: 10px;
  }

  .card {
    width: 100%;
    margin-bottom: 20px;
  }

  /* 调整主体布局 */
  .main-container {
    flex-direction: column;
    width: 100%;
    padding: 10px;
  }

  .left-banner,
  .right-research {
    width: 100%;
  }

  .container1 {
      flex-direction: column;
    width: 100%;
    padding: 10px;
    }

    .column {
      width: 100%;
    }
    .tab-pane li a{
  white-space: nowrap;      /* 禁止换行 */
  overflow: hidden;         /* 隐藏溢出内容 */
  text-overflow: ellipsis;  /* 显示省略号 */
  width:100%;

    }
    .tab-pane span{
      display: none;
    }
  /* 调整学团管理卡片布局 */
  .xsgz-list {
    flex-direction: column;
    width: 100%;
    padding: 10px;
  }

  .xsgz {
    width: 100%;
    margin-bottom: 20px;
  }

  .xsgz .img-mask{
  width: 100%;
  height: 240px;
  overflow: hidden;
}
.xsgz img {
  width: 100%;
  height: 240px; /* 固定高度 */
  object-fit: cover; /* 保持长宽比并覆盖容器 */
  display: block;
  transition: transform 0.3s ease; /* 添加过渡效果 */
  transform-origin: center center; /* 设置变换原点为中心 */
}


  .quick-links {
    flex-direction: column;
    width: 100%;
    padding: 10px;
    }

    .quick-links a {
      color: #fff;
      text-decoration: none;
      padding: 10px 20px;
      border: 1px solid #fff;
      border-radius: 20px;
    }

  /* 调整页脚布局 */
  .footer-info {
    flex-direction: column;
    text-align: center;
  }

  .logo-group {
    margin-bottom: 20px;
  }
  .logo-group img{
    width:80vw;
  }

  .contact-info {
    margin-bottom: 20px;
  }


.mobile-menu{
  display: block;
}


  /* 顶部导航栏 */
    .header-phone {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 50px;
      background: #0e81c3;
      z-index: 100000;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 16px;
    }
    
    /* Logo区域 */
    .header-phone .logo img {
      width:40vw;
    }
    
    /* 菜单按钮 */
    .menu-btn {
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      width: 30px;
      height: 30px;
      cursor: pointer;
      z-index: 11000;
    }
    
    .menu-btn__line {
      width: 24px;
      height: 2px;
      background-color: #fff;
      margin: 2px 0;
      transition: all 0.3s ease;
    }
    
    /* 菜单按钮打开状态 */
    .menu-open .menu-btn__line:nth-child(1) {
      transform: translateY(6px) rotate(45deg);
    }
    
    .menu-open .menu-btn__line:nth-child(2) {
      opacity: 0;
    }
    
    .menu-open .menu-btn__line:nth-child(3) {
      transform: translateY(-6px) rotate(-45deg);
    }
    
    /* 折叠菜单 */
    .mobile-menu {
      position: fixed;
      top: 0;
      right: -250px;
      width: 250px;
      height: 100%;
      background-color: #ffffff;
      box-shadow: -2px 0 4px rgba(0, 0, 0, 0.1);
      transition: all 0.3s ease;
      z-index: 900;
    }
    
    .menu-open .mobile-menu {
      right: 0;
    }
    
    /* 菜单列表 */
    .menu-list {
      list-style: none;
      margin: 0;
      padding: 0;
      padding-top: 70px;
    }
    
    .menu-item {
      padding: 16px 24px;
      border-bottom: 1px solid #f5f5f7;
    }
    
    .menu-item a {
      color: #1d1d1f;
      text-decoration: none;
      font-size: 1rem;
      display: block;
    }
    
    .menu-item.has-submenu {
      position: relative;
    }
    
    .menu-item.has-submenu::after {
      content: "›";
      position: absolute;
      right: 24px;
      top: 50%;
      transform: translateY(-50%) rotate(0deg);
      transition: transform 0.3s ease;
    }
    
    .menu-item.has-submenu.open::after {
      transform: translateY(-50%) rotate(90deg);
    }
    
    /* 子菜单 */
    .submenu {
      list-style: none;
      margin: 0;
      padding: 0;
      display: none;
      background-color: #f5f5f7;
    }
    
    .submenu-item {
      padding: 12px 24px;
      padding-left: 40px;
    }
    
    .submenu-item a {
      color: #424245;
    }
    
    /* 遮罩层 */
    .overlay {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background-color: rgba(0, 0, 0, 0.4);
      opacity: 0;
      visibility: hidden;
      transition: all 0.3s ease;
      z-index: 80;
      width:100%;
    }
    
    .menu-open .overlay {
      opacity: 1;
      visibility: visible;
    }
    
    /* 主内容区 */
    .main-content {
      padding: 70px 16px 16px;
      transition: all 0.3s ease;
    }
    
    .menu-open .main-content {
      transform: translateX(-250px);
    }



}