.nav{
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-sizing: border-box;
  padding:10px 20px;
  border-bottom: solid 2px #dfdfdf;
}
.nav_center{
  flex: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-right: 50px;
}
.nav_l{
  display: flex;
  margin-right: 100px;
}
.nav_l .title_logo{
  display: block;
  height: 44px;
  transition: .5s;
}
.nav_l .name{
  font-family: Microsoft YaHei, Microsoft YaHei;
  font-weight: bold;
  font-size: 40px;
  line-height: 40px;
  color: #000;
  font-style: normal;
  cursor: pointer;
}
.nav_l .name1{
  font-family: Microsoft YaHei, Microsoft YaHei;
  font-weight: bold;
  font-size: 18px;
  line-height: 20px;
  color: #000;
  font-style: normal;
  cursor: pointer;
}
.nav_c{
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav_c div{
  font-family: Microsoft YaHei, Microsoft YaHei;
  font-weight: bold;
  font-size: 20px;
  color: #000;
  font-style: normal;
  cursor: pointer;
  transition: .5s;
  margin:0 10px;
}
.nav_c div:last-child{
  margin-right: 0;
}
.nav_r{
  width: fit-content;
  height: 44px;
  background-color: rgb(196, 64, 57);
  padding: 0 20px;
  font-family: Microsoft YaHei, Microsoft YaHei;
  font-weight: bold;
  font-size: 24px;
  line-height: 44px;
  color: #fff;
  font-style: normal;
  cursor: pointer;
  transition: .5s;
}
.cover{
  padding: 40px 0;
  font-family: Microsoft YaHei, Microsoft YaHei;
  font-weight: bold;
  font-size: 44px;
  line-height: 50px;
  color: #000;
  font-style: normal;
  text-align: center;
  border-bottom: solid 2px #dfdfdf;
}
.menu{
  padding-top: 30px;
  border-bottom: solid 2px #dfdfdf;
}
.mySwiper{
  max-width: 1280px;
  margin: 0 auto;
  height: 30px;
  overflow: hidden;
  position: relative;
}
.mySwiper .swiper-slide{
  width: fit-content;
  box-sizing: border-box;
  padding: 0 10px;
  color: #999;
}
.mySwiper .swiper-slide-active{
  color: #000;
  font-weight: bold;
}
.mySwiper .btn{
  position: absolute;
  width: 50px;
  height: 4px;
  background-color: #666;
  left: calc(50% - 25px);
  bottom: 0;
}
.all{
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #f6f6f6;
  padding-top: 10px;
}
.all a{
  display: block;
  font-family: Microsoft YaHei, Microsoft YaHei;
  font-weight: bold;
  font-size: 14px;
  color: #000;
  font-style: normal;
  margin: 0 20px;
  cursor: pointer;
}
.section{
  background-color: #f6f6f6;
  padding: 60px 0 0;
}
.sec_center{
  max-width: 1280px;
  margin: 0 auto;
}
.sec_tit{
  position: relative;
  width: 100px;
  height: 20px;
  background-color: #c9c9c9;
  left: -10px;
  margin-bottom: 40px;
}
.sec_tit .name{
  position: absolute;
  width: 100vw;
  left: 10px;
  bottom: 5px;
  font-family: Microsoft YaHei, Microsoft YaHei;
  font-weight: bold;
  font-size: 24px;
  color: #000;
  font-style: normal;
}
.sec_list{
  display: flex;
  flex-wrap: wrap;
  padding-bottom: 40px;
}
.sec_item{
  position: relative;
  box-sizing: border-box;
  padding: 0 17px;
  width: 320px;
}
.item_img{
  width: 100%;
  height: 370px;
  overflow: hidden;
  cursor: pointer;
  transition: .5s;
}
.item_img img{
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.item_img:hover{
  transform: scale(1.01);
  box-shadow: 0 0 4px 4px rgba(0, 0, 0, 0.2);
}
.item_date{
  text-align: center;
  font-family: Microsoft YaHei, Microsoft YaHei;
  font-weight: bold;
  font-size: 14px;
  color: #000;
  font-style: normal;
  margin:8px 0 15px;
}
.item_name{
  position: absolute;
  top: 0;
  opacity: 0;
}
.page{
  padding: 20px 0;
}
.center{
  max-width: 1280px;
  margin: 0 auto;
}
.page .center{
  overflow: hidden;
}
.last{
  float: left;
  display: flex;
  align-items: center;
  cursor: pointer;
}
.last .iconfont{
  transform: scaleX(-1);
}
.next{
  float: right;
  display: flex;
  align-items: center;
  cursor: pointer;
}
.to_top{
  transform: rotate(-90deg);
  position: fixed;
  right: 50px;
  bottom: 100px;
  z-index: 90;
  cursor: pointer;
  opacity: 0;
}
.dialog{
  display: none;
  position: fixed;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100vw;
  height: 100vh;
  z-index: 100;
}
.lists{
  position: relative;
  padding:20px 0 40px;
}
.lists::after{
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  right: 0;
  bottom: 0;
  width: 100vw;
  height: 2px;
  background-color: #dfdfdf;
}
.lists .list_tit{
  font-family: Microsoft YaHei, Microsoft YaHei;
  font-weight: bold;
  font-size: 40px;
  color: #000;
  font-style: normal;
  margin-bottom: 20px;
}
.list{
  display: flex;
  flex-wrap: wrap;
}
.list .item{
  width: 50%;
  font-family: Microsoft YaHei, Microsoft YaHei;
  font-size: 16px;
  color: #3985c3;
  font-style: normal;
  text-decoration: underline;
  margin-bottom: 20px;
  cursor: pointer;
  transition: .3s;
}
.list .item:hover{
  transform: scale(1.01);
}
.title_menu{
  display: none;
}
.nav_menu,.nav_menu_mask{
  display: none;
}
@media screen and (max-width: 1410px) {
  .nav_center{
    margin-right: 20px;
  }
  .nav_l{
    margin-right: 40px;
  }
}
@media screen and (max-width: 1318px) {
  .nav_l .title_logo{
    height: 30px;
  }
  .nav_c div{
    font-size: 14px;
  }
  .nav_r{
    transform: scale(.8);
  }
}
@media screen and (max-width: 1024px) {
  .nav_menu_mask{
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 109;
  }
  .nav_menu{
    display: none;
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    width: 70%;
    height: 100vh;
    background-color: #fff;
    z-index: 110;
  }
  .nav_menu .iconfont{
    position: absolute;
    right: 10px;
    top: 0;
    line-height: 60px;
    font-size: 40px;
  }
  .nav_menu .nav_menu_item{
    font-family: Microsoft YaHei, Microsoft YaHei;
    font-weight: bold;
    font-size: 15px;
    line-height: 60px;
    color: #000;
    font-style: normal;
    border-bottom: solid 2px #666;
    box-sizing: border-box;
    padding: 0 20px;
  }
  .nav_menu_first{
    margin-top: 60px;
  }
  .nav_menu_item:last-child{
    border: none;
  }
  /*  */
  .nav{
    padding: 0;
  }
  .nav .nav_c{
    display: none;
  }
  .nav .nav_r{
    display: none;
  }
  .nav_l{
    margin-right: 0;
  }
  .nav_l .title_logo{
    margin: 15px 0 15px 20px;
    height: 20px;
  }
  .nav_l .name{
    font-size: 30px;
    line-height: 60px;
  }
  .nav_l .name1{
    font-size: 14px;
    line-height: 46px;
  }
  .title_menu{
    display: block;
    position: absolute;
    right: 10px;
    top: 0;
    line-height: 50px;
    font-size: 40px;
  }
  .section .sec_center{
    box-sizing: border-box;
    padding: 0 20px;
  }
  .sec_list .sec_item{
    width: 48%;
    margin-right: 4%;
    padding: 0;
  }
  .item_img{
    height: 240px;
  }
  .sec_list .sec_item:nth-child(2n){
    margin-right: 0;
  }
  .item_date{
    font-size: 12px;
  }
  .list .item{
    width: 100%;
    margin-bottom: 10px;
    font-size: 14px;
  }
  .cover{
    font-size: 30px;
  }
  .to_top{
    right: 20px;
  }
  .sec_tit .name{
    font-size: 20px;
  }
  .lists .list_tit{
    font-size: 24px;
  }
  .footerImage{
    width: 100%;
  }
}