/** base section **/
main p{
  text-align: center;
  font-size: 20px;
  font-family: PingFangSC-Medium, PingFang SC;
  font-weight: 500;
  color: #333333;
  line-height: 35px;
}

main em{
  display: block;
  text-align: center;
  font-style: normal;
  font-family: PingFangSC-Medium, PingFang SC;
  font-weight: 500;
  color: #7f7f7f;
  font-size: 16px;
  line-height: 26px;
  width: 300px;
}

main h2{
  display: block;
  width: 280px;
  height: 80px;
  margin: 0 auto;
  font-size: 28px;
  font-weight: 500;
  color: #333333;
  font-family: PingFangSC-Medium, PingFang SC;
  text-align: center;
  padding-top: 96px;
}

.box-content{
  float: left;
  width: 308px;
  margin: 20px 50px;
}

.box-content img{
  display: block;
  width: 90px;
  height: 90px;
  margin: 0 auto;
}

/** section one; **/
.introduce{
  position: relative;
}
.home-banner{
  width: 100%;
}
.circle{
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20%;
  transform: translate(-50%,-35%);
}

/** section two; **/
.reason1{
  background-color: #F8F8FA;
}

.reason1-box{
  height: 700px;
}


/** section three; **/
.reason2-box{
  height: 590px;
}
.reason-large,.reason-large em{
  width: 513px;
}
.objective-title{
  padding-top: 0;
}
.objective-box{
  width: 1088px;
  height: 165px;
  margin: 0 auto;
}
.box-wrapper{
  display: inline-block;
  width: 359px;
  height: 90px;
}
.box-wrapper img{
  display: block;
  margin: 0 auto;
}
.main-bottom{
  width: 1088px;
  height: 400px;
  margin: 0 auto;
}