.mb_head{display:none;}
.pc_head{width:100%;width:100%;z-index:9999;position:fixed;top:0;left:0;transition:all .5s;}

.scroll{top:-100px;}
.scroll .pc_nav{width:100%;border-radius:0;box-shadow:0 5px 10px rgba(0,0,0,0.1)}
.scroll .pc_nav ul{justify-content:space-around}
.scroll .child_dev_ban{border-radius:0;}
.pc_top{}
.pc_logo{margin:20px auto;width:280px;}
.pc_logo a{display:block;}
.pc_logo a img{width:100%;display:block;filter:invert(1) brightness(100);}

.pc_nav{margin:0 auto;width:90%;background:#fff;border-radius:8px;display:flex;align-items:center;transition:all .5s;}
.pc_nav ul{width:calc(100% - 200px);padding:0 50px;display:flex;justify-content:space-between;}
.pc_nav ul li{}
.pc_nav ul li a{font-size:18px;font-weight:500;display:block;}
.pc_nav ul li a:hover{font-weight:bold;color:#000}
.pc_nav ul li a.nav_active{font-weight:bold;color:#00a0e8}
.child_dev_ban{border-radius:8px;width:200px;padding:15px;position:relative}
.child_dev_ban a{display:flex;font-weight:600;align-items:center;justify-content:space-between;}
.child_dev_ban p{font-size:17px;line-height:1.3;}
.child_dev_ban img{width:70px;}


@media screen and (max-width:1800px){
  .pc_nav{width:95%;}
  .pc_nav ul{width:calc(100% - 180px);padding:0 25px;}
  .pc_nav ul li a{font-size:16px}
  .child_dev_ban p{font-size:15px;}
  .child_dev_ban{width:180px;}
  .child_dev_ban img{width:65px;}
}

@media screen and (max-width:1400px){
  .pc_nav{width:1400px;}
  .scroll .pc_nav{width:1400px;}
}

@media screen and (max-width:768px){
  .pc_head{display:none;}
  .hd_btn{display:none;} .mb_head{display:block;position:fixed;top:0;left:0;z-index:99999;width:100%;background:#fff;}
  .mb_top{display:flex;align-items:center;justify-content:space-between;padding:15px 0;width:95%;margin:0 auto;}
 
  .hamburger{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;position:relative;border:0;background:transparent;cursor:pointer;}
.hamburger span{position:absolute;left:10px;right:10px;height:2px;background:#000;border-radius:2px;transition:transform .25s ease,top .25s ease,opacity .2s ease;}
.hamburger span:nth-child(1){top:14px;}
.hamburger span:nth-child(2){top:21px;}
.hamburger span:nth-child(3){top:28px;}
.hamburger.is-active span:nth-child(1){top:21px;transform:rotate(45deg);}
.hamburger.is-active span:nth-child(2){opacity:0;}
.hamburger.is-active span:nth-child(3){top:21px;transform:rotate(-45deg);}

  
  .mb_logo{width:200px;}
  .mb_logo img{width:100%}
  .mb_call{width:40px;}
  .mb_call img{width:100%}
  .all_nav{z-index:99999;top:0px;width:80%;height:100%;background:rgb(16 43 83 / 80%);padding:40px 25px;position:fixed;right:-90%;transition:all .5s;backdrop-filter:blur(10px);}
  .all_nav.show {width:90%;right:0;}
 
  .all_nav ul{}
  .all_nav ul li{padding:17px 0px;border-bottom:1px solid rgba(255,255,255,0.1)}
  .all_nav ul li:last-child{border:0;}
  .all_nav ul li a{font-weight:500;color:#fff;font-size:15px;display:block;}
  
  .all_nav_close{margin-left:auto;width:13px}
  .all_nav_close img{width:100%;}
}