.caseul{ overflow:hidden; width:100%;}
.caseul li{ overflow:hidden; width:24.3%; height:auto; float:left; margin:0 4px 30px;}
.caseul li a {
  display: block;
}
.caseul li:nth-child(4n){ margin-right:0;}
.casetu{ width:100%; height:auto; min-height:185px;}
.casetu img{ max-width:100%; max-height:100%; width:100%;aspect-ratio: 14/9;}
.casezi{ padding:10px 10px 0;}
.casetitle{ font-size:16px; font-weight:bold; color: #666;/*font-size: 1.2vw;line-height: 1.6vw;*/overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 1;}
.casep{font-size:14px;color: #666;/*line-height: 1.1vw;font-size: 1vw;*/min-height: 48px;overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;}

.share-box{padding-left: 0;
  padding-right: 0;
  text-align: center;
  margin-bottom: 30px;
  width: 100%;
  position: relative;
  z-index: 101;}
.share-box li {
  padding: 0 22px;
  margin: 0;
  background: #fff;
  position: relative;
  z-index: 2;
  margin: 0 -2px;
  display: inline-block;
  vertical-align: middle;
  width: 6vw;
}
.share-box .line {
  position: absolute;
  width: 100%;
  height: 1px;
  background: #dddddd;
  top: 0;
  left: 0;
  top: 50%;
  margin-top: -1px;
}
.share-box li a {
  position: relative;
  text-decoration: none;
}
.wechat-qrcode {
  position: absolute;
  z-index: 999;
  top: 40px;
  background: white;
  width: 160px;
  text-align: center;
  padding: 10px 10px;
  border-radius: 5px;
  left: -42px;
  display: none;
  transition: all 0.6s;
  border: 1px solid #eee;
}
.wechat-qrcode img {
  width: 140px;
  height: 140px;
}
.wechat-qrcode h4 {
  font-size: 12px;
  margin: 10px 0 0;
}
.share-box li:hover .wechat-qrcode{ display:block;transition: all 0.6s;}