.box{
  min-width: 1200px;
  max-width: 100%;
}
.head{
  position: relative;
  width: 100%;
  height: 510px;
}
.icon{
  position: absolute;
  width: 188px;
  top: 30px;
  left: 2.5%;
}
.head ul{
  position: absolute;
  right: 5%;
  top: 15px;
}
.head ul li{
  display: inline;
  line-height: 86px;
  margin: 25px;
}
.head ul li a{
  font-size: 18px;
  font-family: "PingFangSC";
  color: #999999;
}
.liactive{
  color: #f99d26 !important;
}
.head-img img{
  position: absolute;
  min-width: 1200px;
  max-width: 100%;
  height: 400px;
  top: 110px;
}

.mid{
  width: 100%;
  height: 2170px;
  overflow: hidden;
}
.upper{
  width: 1200px;
  height: 1024px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin: 100px 16.5%;
}
.upper-one{
  width: 600px;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0 0 120px 0;
}
.upper-one h1{
  font-size: 38px;
  font-family: "Microsoft YaHei";
  color: #333;
}
.upper-one p{
  font-size: 28px;
  line-height: 46px;
  color: #333;
}
.upper-two{
  width: 1200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0 0 100px 0;
}
.upper-two span{
  width: 1200px;
  margin-bottom: 40px;
  font-size: 19px;
  line-height: 38px;
  text-align: left;
  color: #a3a3a3;
}
.upper-three{
  width: 1220px;
  height: 240px;
  
  
}
.upper-three ul{
  height: 240px;
}
.upper-three li{
  display: inline-block;
  height: 240px;
  margin: 0 150px;
}
.upper-three i{
  font-size: 18px;
  color: #999;
}
.upper-three strong{
  font-size: 60px;
  color: #000;
  font-family: 'Impact';
}
.upper-three sup{
  position: relative;
  top: -20px;
  font-size: 30px;
  color: #000;
  font-family: 'Impact';
}
.upper-three b {
  font-size: 24px;
  color: #000;
}
.lower {
  position: relative;
  display: flex;
}
.lower-left{
  margin-top: 140px;
  margin-left: 15%;
  width: 660px;
}
.lower-left h1{
  line-height: 50px;
  font-size: 42px;
}
.lower-left p{
  font-size: 56px;
  line-height: 102px;
  color: #f6f6f6;
  margin-bottom: 54px;
}
.lower-left span{
  display: inline-block;
  width: 641px;
  height: 91px;
  font-size: 18px;
  line-height: 36px;
  color: #666;
}
.lower-right div{
  position: absolute;
  width: 590px;
  height: 830px;
  border: 6px solid #e6e7e8;
  top: -70px;
  left: 1010px;
}
.lower-right img{
  position: absolute;
}