main {
  height: 2800px;
}
h2 {
  width: 100%;
  height: 62px;
  font-size: 44px;
  font-family: STYuanti-SC-Regular, STYuanti-SC;
  font-weight: 400;
  color: #262626;
  line-height: 62px;
  margin-top:70px;
}
.main-img {
  width: 1200px;
  height: 520px;
  margin-top: 50px;
  border-radius: 5px;
}
h3 {
  width: 100%;
  height: 26px;
  text-align: center;
  font-size: 24px;
  font-family: PingFangSC-Regular, PingFang SC;
  font-weight: 400;
  color: #595959;
  line-height: 26px;
  margin-top:20px;
}
.list {
  width: 100%;
  height: 645px;
  display: flex;
  justify-content: space-between;
  margin-top: 70px;
}
.item {
  width: 360px;
  height: 100%;
}
.item > img {
  height: 480px;
  width: 360px;
}
.item-txt {
  width: 360px;
  height: 165px;
}
.item-txt > span {
  width: 100%;
  height: 28px;
  font-size: 20px;
  font-family: PingFangSC-Semibold, PingFang SC;
  font-weight: 600;
  line-height: 28px;
  letter-spacing: 1px;
  display: block;
  margin: 20px 0 0 20px;
  box-sizing: border-box;
  float: left;
}
.t1 {
  background: -webkit-gradient(linear,0 0,0 100%,from(#EA7559),to(#F54341));   
  color: white;
}
.t2 {
  background: -webkit-gradient(linear,0 0,0 100%,from(#EAECE8),to(#F7F5F5));   
  color: #3F4450;
}
.t3 {
  background: -webkit-gradient(linear,0 0,0 100%,from(#60DFAA),to(#20BF89));   
  color: white;
}
h4 {
  width: 320px;
  height: 52px;
  font-size: 16px;
  font-family: PingFangSC-Regular, PingFang SC;
  font-weight: 400;
  letter-spacing: 1px;
  margin: 20px 0 0 20px;
  display: block;
  float: left;
}
.t1 > h4 {
  color: white;
}
.t2 > h4 {
  color: #3F4450;
}
.t3 > h4 {
  color: white;
}
.main-img2 {
  width: 1200px;
  height: 783px;
  margin-top: 200px;
}