.mb_head{display:none;}
.pc_head{border-top:3px solid #6b4c36;width:100%;width:100%;z-index:9999;position:fixed;top:0;left:0;transition:all .5s;background:#fff;}
.pc_top{padding:30px 0;width:1600px;margin:0 auto;position:relative}
.hd_num{position:absolute;top:50%;left:0;transform:translateY(-50%);border-radius:100px;}
.hd_num h4{letter-spacing:0.5px;width:fit-content;padding:2px 18px;line-height: 1.5;}
.top_hd_nav{display:flex;gap:0 10px;position:absolute;top:50%;right:0;transform:translateY(-50%);}
.top_hd_nav a{display:block;border-radius:100px;padding:3px 12px;font-weight:600;font-size:13px;line-height:1.5;background:#fff;border:1px solid #6e503e;color:#6e503e}

.pc_logo{width:280px;margin:0 auto}
.pc_logo a{display:block;}
.pc_logo a img{width:100%;display:block;}

.pc_nav{width:100%;border-top:1px solid #6e503e;border-bottom:1px solid #6e503e}
.pc_nav ul{width:1600px;margin:0 auto;display:flex;justify-content:space-between;}
.pc_nav ul li{}
.pc_nav ul li a{padding:20px 0;font-size:18px;font-weight:500;text-align:center;display:block;color:#6e503e;}
.pc_nav ul li a:hover{font-weight:bold;}
.pc_nav ul li a.nav_active{font-weight:bold;}


@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%;padding:40px ;position:fixed;right:-90%;transition:all .5s;backdrop-filter:blur(10px);}
  .all_nav.show {width:90%;right:0;}
  .all_nav_logo{width:150px;position:absolute;top:40px;left:40px;filter: invert(1) brightness(10);}
  .all_nav ul{}
  .all_nav ul li{padding:8px 0px;}
  .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%;}
  
  .ft_user{display:flex;gap:10px 0;flex-wrap:wrap;justify-content:space-between;}
  .ft_user a{width:100%;color:#fff;border:1px solid #fff;padding:8px 0;border-radius:5px;font-size:14px;text-align:center;font-weight:500}
}