.pc_head{width:100%;position:fixed;top:0;left:0;width:100%;z-index:9999;transition:all .5s;background:#fff;padding:35px 0;box-shadow:0 5px 10px rgba(0,0,0,0.1);}
.pc_head .ctt{width:80%;display:flex;justify-content:space-between;align-items:center;}
.pc_hd_left{display:flex;gap:0 35px;align-items:center;}
.pc_logo{width:160px;}
.pc_logo a{display:block;width:100%}
.pc_logo a img{width:100%;transition:all .5s;}
.pc_nav{width:600px;}
.pc_nav ul{display:flex;justify-content:space-between;}
.pc_nav ul li{}
.pc_nav ul li a{font-size:18px;font-weight:500;transition:all .2s;}
.pc_nav ul li a:hover{color: #0b396f ! Important;font-weight:bold !Important;}
.nav_active{color: #0b396f ! Important;font-weight:bold !Important;}
.hd_call{}
.hd_call img{width:26px;margin-right:10px;}
.hd_call a{font-size:26px;font-weight:bolder;}
.mb_header{display:none;}

@media screen and (max-width:1700px){
  .pc_head .ctt{width:1400px;}
  .pc_nav{width:600px;}
  .pc_logo{width:220px;}
  .pc_nav ul li a{font-size:15px;}
}
@media screen and (max-width:799px){
  .pc_head{display:none;} .mb_header{display:block;position:fixed;top:0;left:0;width:100%;z-index:99999;}
  .mb_hd_top{display:flex;background:#fff;padding:20px;justify-content:space-between;align-items:center;}
  .logo{width:120px;}
  .logo a{display:block;}
  .logo img{width:100%}
  .m_right{display:flex;align-items:center;}
  .m_call{position:relative;top:3px;margin-right:10px;}
  .m_call i{font-size:25px;color:#003668}
  .m_menu_btn{width:30px;cursor:pointer;}
  .m_menu_btn img{width:100%;}
  .mb_menu{position:fixed;top:-300px;left:0;width:100%;height:auto;background:#f8f8f8;padding:30px 20px;z-index:-1;transition:all .5s;}
  .mb_menu_open{top:71px;}
  .btnActive img{content: url(../head/images/close.png);
        width: 21px;margin-lefT: 5px;display: block;}}
  .mb_menu ul{}
  .mb_menu ul li{text-align:center;padding:18px 10px;border-bottom:1px solid #e4e4e4;}
  .mb_menu ul li img{filter:invert(1) brightness(10);width:4px;}
  .mb_menu ul li:last-child{border:0;}
  .mb_menu ul li a{display:block;font-size:14px;font-weight:bold;color:#000;}
}