.box{
  min-width: 1200px;
  max-width: 100%;
  overflow: hidden;
}
.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;
}
.center{
  width: 100%;
  height: 1800px;
  
}
.title{
  width: 290px;
  height: 130px;
  margin: 100px 15% 90px 15%;
  text-align: left;
}
.title h1{
  color: #000000;
  font-size: 34px;
}
.title p{
  color: #666666;
  font-weight: bold;
  font-size: 18px;
  line-height: 38px;
}
.black::after{
  content: '';
  width: 28px;
  height: 2px;
  display: block;
  border: 2px solid #000000;
  background-color: #000000;
  margin-top: 50px;
}

.mainnav{
  margin: 0 15% 60px 15%;
  text-align: left;
}
.mainnav ul{
  width: 1330px;
  height: 70px;
  display: flex;
}
.mainnav li{
  width: 180px;
  height: 70px;
  text-align: center;
  line-height: 70px;
  background-color: #fef7f5;
  color: #666666;
  margin-right: 10px;
  cursor: pointer;
  font-size: 20px;
}
.mainnav ul .lis{
  background-color: #ec6941;
  color: #ffffff;
}
.lis{
  background-color: #ec6941;
  color: #ffffff;
}
.nav-content{
  width: 1330px;
  height: 1300px;
  margin: 0 15%;
}
.nav-content ul{
  width: 1376px;
}

/* .nav-content ul li{
  float: left;
  width: 640px;
  height: 570px;
  margin-right: 48px;
  margin-bottom: 60px;
  background-color: #fbfbfb;
} */
/* .nav-content ul li:hover{
  background-color: #ffffff;
  box-shadow: 0 0 4px 4px #fbfbfb;
} */
.nav-content ul li h1{
  margin-left: 40px;
  margin-top: 40px;
  color: #333333;
  font-weight: normal;
}
.nav-content ul li p{
  margin: 20px 0 36px 40px;
  font-size: 18px;
  color: #999999;
}
.nav-content ul li a{
  display: inline-block;
  width: 60px;
  height: 35px;
  line-height: 35px;
  text-align: center;
  border: 1px solid #000000;
  border-radius: 18px;
  margin-left: 40px;
  color: #EC6941;
}
.item{
  display: none;
  width: 1376px;
}
.item div{
  float: left;
  width: 640px;
  height: 570px;
  margin-right: 48px;
  margin-bottom: 60px;
  background-color: #fbfbfb;
}
.item div:hover{
  background-color: #ffffff;
  box-shadow: 0 0 10px 10px #fbfbfb;
}
.item div:hover h1{
  color: #ec6941 !important;
}
/* .item div:hover a{
  background-color: #ec6941 !important;
  border: 1px solid #ec6941 !important;
  color: #ffffff !important;
} */
.item div a:hover{
  background-color: #ec6941 !important;
  border: 1px solid #ec6941 !important;
  color: #ffffff !important;
}
/* .item div a:hover h1{
  color: #ec6941 !important;
} */