html {
  scroll-behavior: smooth;
}
.mb_hd_pop{display:none;}
.pc_header {
  width: 100%;
  background:rgba(0,0,0,0.0);
  z-index: 9999;
  position: fixed;
  transition:all .5s;
}

.pc_header.hd_active{transition:all .5s;background:rgba(0,0,0,0.7);}

.mb_header {
  display: none;
}


.pc_header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  width:240px;
}

.logo a {
  display: block;
}

.logo img {
  width: 100%;
}


.nav {
}

.nav ul {
  width: 1050px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0 auto;
}

.nav ul li {
  position: relative;
}

.nav ul li:after {
  position: absolute;
  right: -39px;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 13px;
  display: block;
  content: "";
  background: #e4e4e4;
}

.nav ul li:last-child:after {
  display: none;
}

.nav ul li a {
  display: block;
  text-align: center;
  font-size: 18px;
  font-weight: 500;
  padding: 35px 0;
  color: #fff;
  position: relative;
}

.nav ul li a:before {
  background: #009fe3;
  display: block;
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform:translateX(-50%);
  width: 0%;
  height: 3px;
  opacity: 0;
  transition: all .3s;
}

.nav ul li:hover a:before {
  opacity: 1;
  width:100%;
  transition: all .3s;
}

.nav ul li a:hover {
  color: #009fe3;
  font-weight: 700
}

.nav_active {
  border-bottom: 3px solid #009fe3;
  color: #009fe3 !important;
  font-weight: 600 !important;
}

.nav_active:before {
  background: #009fe3;
  display: block;
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  opacity: 0;
  transition: all .3s;
}


@media screen and (max-width:799px) {
  .pc_header {
    display: none;
  }

  .mb_header {
    display: block;
    width: 100%;
    position: fixed;
    z-index: 99999;
  }

  .mb_hd {
    background: #fff;
    border-bottom: 1px solid #e4e4e4;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
  }

  .mb_header .logo {
    width: 185px;
  }

  .mb_header .logo a {
    display: block;
    padding: 30px 0;
  }

  .mb_header .logo img {
    width: 100%;
  }

  .m_menu_btn {
    position: relative;
    top: 0;
    right: 0;
  }

  .m_menu_btn span {
    display: block;
    width: 20px;
    height: 2px;
    background: #20554d;
    margin-bottom: 5px;
  }

  .mb_menu {}

  .mb_open_btn{display:flex;justify-content:space-between;align-items:center;margin-bottom:40px;}
  .mb_open_btn a{display:block;}
  .mb_open_btn img{width:24px;height:20px;}
  .mb_close_btn img{width:17px !important;}
  .mb_menu ul {
    width: 70%;
    position: fixed;
    top: 0px;
    right: -100%;
    z-index: 9999;
    background: rgba(0,0,0,0.9);
    height: auto;
    padding:40px 30px;
  }

  .mb_menu ul li {}

  .mb_menu ul li a {
    padding-bottom:20px;
    color: #fff;
    font-size: 15px;
    display: block;
    font-weight: 500;
  }

  .menu_bg {
    display: none;
    background: #333;
    opacity: 0.3;
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    cursor: pointer;
  }
  .mb_hd_info{padding-top:20px;}
  .mb_hd_info a{display:block;font-size:13px;color:#fff;border:1px solid #fff;padding:10px;text-align:center;margin-top:8px;}
  
  .mb_hd_pop{display:none;position: fixed;
    width: 90%;
    top:50%;
    left: 50%;
    transform: translate(-50%,-50%);z-index:999999;}
  .mb_hd_pop_ctt{width:100%;height:400px;overflow-y:scroll;} .mb_hd_close{position:absolute;background:#009fe3;width:30px;height:30px;top:0;right:0;}
  .mb_hd_pop_ctt img{width:100%;}
  .mb_hd_close img{padding:9px;}

}