/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: Arial, sans-serif;
    color: #333;
    background-color: #fff;
    line-height: 1.5;
  }
  
  /* 头部样式 */
  .news-header {
    background-color: #fff;
    text-align: center;
    padding: 0;
    font-size: 24px;
    height: 1087px;
    background: url("images/top.jpg") no-repeat center top;
   
   
  }
  .Tdiv{
    max-width: 1200px;
    margin: 0 auto;
}
  
  h1 {
    color: #c00;
    font-weight: bold;
  }
  
  /* 校园行与研学活动 */
  .campus-activity {
    display: flex;
    justify-content: space-between;
    /* padding: 20px; */
   width: 1200px;
    margin: 0 auto;
  }
  
  .activity-block {
    width: 580px;
    /* background-color: #fff;
    padding: 15px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1); */
  }
  
  .activity-content img {
    width: 100%;
    height: auto;
    margin-bottom: 10px;
  }
  
  .activity-content p {
    font-size: 16px;
    /* text-align: center; */
  }
  .activity-content li{
      list-style: none;
      font-size: 16px;
      padding: 10px 0;
  }
  
  /* 特色微课堂 */
  .micro-class {
    background-color: #fff;
    
    max-width: 1200px;
    margin: 20px auto;
  }
  
  .class-grid {
    /* display: grid;
    grid-template-columns: repeat(2, 1fr); */
    /* gap: 40px; */
    overflow: hidden;
   
 
  }
  
  .class-item {
    width: 580px;
    text-align: center;
    float: left;
  }
  .class-item:nth-of-type(2n){
    float: right;
  }
  
  .class-item img {
    width: 580px;
    height: auto;
    margin-bottom: 10px;
  }
  
  /* 精彩展示 */
  .showcase {
    
    max-width: 1200px;
    margin: 20px auto;
  }
  
  .showcase h2 {
    margin-bottom: 10px;
    font-size: 20px;
    color: #c00;
  }
  
  .video-grid, .art-grid {
  
    overflow: hidden;
  }
  
  .video-item, .art-item {
   
    text-align: center;
    width: 289px;
    float: left;
    padding-right: 14px;
    box-sizing: content-box;
  }
  .video-item:nth-of-type(4n), .art-item:nth-of-type(4n){
    padding-right: 0;
  }
  
  .video-item img, .art-item img {
    width: 100%;
    height: 159px;
    margin-bottom: 10px;
  }
  
  /* 媒体查询：适配手机端 */
  @media screen and (max-width: 768px) {
    .news-header {
      width: 100%;
      background-size: cover;
      background-position: center;
      height: 250px;
    }
    .micro-class {
      background-color: #fff;
      
      max-width: 100%;
      margin: 20px auto;
    }
    .campus-activity {
      flex-direction: column;
      gap: 15px;
      
        display: flex;
        justify-content: space-between;
        padding: 20px;
        width: 100vw;
        margin: 0 auto;
    
    }
    .ys{
      padding-right: 20px;
    }
    .activity-block {
      width: 100%;
    }
    .class-item img {
      width: 100%;
      height: auto;
      margin-bottom: 10px;
  }
    .class-item {
      width: 100%;
      text-align: center;
      float: left;
  }
  
    .class-grid {
      padding: 20px;

      /* grid-template-columns: 2fr; */
    }
    .more {
      float: right;
      display: block;
      padding: 5px 20px;
      line-height: 100%;
      border-radius: 28px;
      border: solid 2px #b22b23;
      font-family: SourceHanSansSC-Medium;
      font-size: 20px;
      text-align: center;
      color: #b22b23;
      cursor: pointer;
      text-decoration: none;
      margin-top: 20px;
  }
  .video-item, .art-item {
    text-align: center;
    width: auto;
    float: none;
    padding-right: 0;
    box-sizing: content-box;
}
  
    .video-grid, .art-grid {
      padding: 0 20px;
       display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;

    -ms-grid-columns: 1fr 1fr 1fr 1fr; 
    -ms-grid-rows: auto; 
    }
    .footer{
      display: none;
    }
    .h50{ height: 50px;}
  }
  .t{
    padding-top: 30px;
    padding-bottom: 15px;
    width: 100%;
    height: auto;
  }
  .more{
    float: right;
    display: block;
	
    padding: 5px 20px;
	
    line-height: 100%;
	border-radius: 28px;
	border: solid 2px #b22b23;
    font-family: SourceHanSansSC-Medium;
	font-size: 20px;
    text-align: center;
	color: #b22b23;  
    cursor: pointer;   
    text-decoration: none;
    margin-top: 20px;                     
}
  a{
    text-decoration: none;
    color: #000;
  }
  a:hover{
    text-decoration: none;
    color: #000;
  }

  .footer {
    background: #f5f5f5;
    border-top: 2px solid #d6001d;
    padding: 40px 0;
    margin-top: 50px;
  }
  
  .footer .footer_img1 {
    margin-top: 15px;
  }
  
  .footer_icp {
    padding: 0 30px;
  }
  
  .footer_icp p {
    line-height: 2em;
    margin: 15px 0 0;
    font-size: 12px;
  }
  .footer_about{}
  .footer_about span{padding:0 10px}

  .footer {
    background: #f5f5f5;
    border-top: 2px solid #d6001d;
    padding: 40px 0;
    margin-top: 50px;
  }
  .footer .container {
    width: 1170px;
    padding-right: 15px;
    padding-left: 15px;
    margin-right: auto;
    margin-left: auto;
    overflow: hidden;
  }
  .footer .container .col-md-1,
  .footer .container .col-md-4,
  .footer .container .col-md-7 {
    float: left;
  }
  .footer .container .col-md-1 {
    width: 8%;
  }
  .footer .container .col-md-7 {
    width: 58%;
  }
  .footer .container .col-md-4 {
    width: 28%;
  }
  .container-fluid {
    padding-right: 15px;
    padding-left: 15px;
    margin-right: auto;
    margin-left: auto;
  }
  .footer .footer_img1 {
    margin-top: 15px;
  }
  .footer_icp {
    padding: 0 30px;
  }
  .footer_icp p {
    line-height: 150%;
    margin: 15px 0 0;
    font-size: 12px;
  }
  .footer_about span {
    padding: 0 10px;
  }