@media (min-width:200px) and (max-width:1199px){
/*隐藏_pc_html*/
.pc_box{display:none;}

/*页脚置底*/
html,body{height:100%;margin:0;padding:0;}

/*mb_nav_top*/
.mb_nav_top_bg{width:100%;position:fixed;top:0;left:0;z-index:11;padding:10px 0;background:#fff;box-shadow:0 0 5px #ccc;}
.mb_nav_top{width:90%;margin:0 auto;display:flex;align-items:center;}
.mb_nav_top a{width:20%;}
.mb_nav_top a:nth-child(2){width:60%;}
.mb_nav_top a img{width:30px;margin:0 !important}
.mb_nav_top a:nth-child(2) img{width:90px;margin:0 auto !important;}
.mb_nav_top a:nth-child(3){display:flex;align-items:Center;flex-direction:row-reverse;}
.mb_nav_top_height{height:57.09px;}

/*nav_hide_box*/
.mb_nav_box_lay{width:100%;height:100%;margin:0 auto;position:fixed;top:0;left:0;background:rgba(0,0,0,0.7);z-index:16;display:none;}
.mb_nav_box{width:70%;height:100vh;overflow:auto;margin:0 auto;background:#bd252a;padding:70px 0 10px 0;box-sizing:border-box;
position:fixed;top:0;left:-70%;z-index:10000 !important;padding-bottom:40px;z-index:11;transition:0.5s;}
.mb_nav_box_move{left:0 !important;}

.mb_nav_down{width:16px;float:right;padding-top:18px;margin-right:2%;}
.mb_nav_up{width:16px;float:right;padding-top:18px;margin-right:2%;}

.mb_nav_title{line-height:50px;}
.mb_nav_title>a{display:block;color:#eefaf6;font-size:1.4rem;font-weight:bold; box-sizing:border-box;padding:0 20px;border-bottom:solid 1px #aa1c24;}
.mb_nav_box>li:last-child>a{border-bottom:None;}
.mb_nav_a{color:#eefaf6;font-size:1.4rem;font-weight:bold;box-sizing:border-box;padding:0 20px;}
.mb_nav_son{max-height:227px;overflow:scroll;padding-top:10px;}
.mb_nav_son li>a{color:#eefaf6;font-size:1.2rem;line-height:35px;font-weight:Normal;box-sizing:border-box;padding-left:30px;}

.mb_nav_title_color{background:#e0f0ef !important;color:#bd252a !important;}

/*search_box*/
.search_box{width:100%;height:100%;background:rgba(0,0,0,0.8);position:fixed;top:0;left:0;z-index:12;box-sizing:border-box;border:solid 1px rgba(0,0,0,0.8);transition:0.5s;display:none;}
.search_close_btn{width:50px;height:50px;position:absolute;right:20px;top:20px;cursor:pointer;transition:0.3s;
background-image:url('../image/close.png');background-repeat:no-repeat;background-size:50px 50px;background-position:center center;}
.search_box input{width:90%;height:40px;position:absolute;left:50%;margin-left:-45%;top:50%;margin-top:-20px;overflow:hidden;text-overflow:ellipsis; white-space:nowrap;
font-size:1.5rem;background:None;border:none;border-radius:0;border-bottom:solid 1px #bd252a;line-height:100px;color:#fff;}
.search_box input::-webkit-input-placeholder{color:#ccc;}

/*overlay_wechat*/
.overlay_wechat{width:1300px;margin:0 auto;position:fixed;top:80px;left:50%;margin-left:-45%;height:80px;display:none;z-index:11;}
.overlay_wechat img{position:absolute;right:0;top:0;width:80px;}

/*news_nav*/
.news_nav_bg{background:#bd252a;padding-top:20px;padding-bottom:10px;}
.news_nav{width:90%;margin:0 auto;position:relative;}
.news_nav>li:nth-child(1) h1{font-size:1.5rem;color:#fff;font-weight:Normal;position:relative;}
.news_nav_bg>dl{display:none;}

/*case_box*/
.case_box{width:90%;margin:0 auto;margin-top:20px;display:Flex;align-items:Center;flex-wrap:wrap;}
.case_box>li{width:100%;margin-bottom:20px;box-sizing:border-box;background:#fff;box-shadow:0 0 5px #999;}
.case_box>li{position:relative;}
.case_photo{width:100%;height:200px;overflow:hidden;background-size:100%;background-position:center center;background-repeat:no-repeat;transition:1s;}
.case_photo img{width:100%;transition:3s;}
.case_text{padding:20px;box-sizing:Border-box;}
.case_text h1{font-size:1.6rem;color:#323232;font-weight:normal;margin-bottom:5px;/*overflow:hidden;text-overflow:ellipsis; white-space:nowrap*/;transition:0.3s;}
.case_line{display:none;}
.case_text h2{font-size:1.2rem;color:#6b6b6b;font-weight:normal;overflow:hidden;text-overflow:ellipsis; white-space:nowrap;margin-bottom:5px;}
.case_text h3{font-size:1rem;color:#a7a7a7;font-weight:normal;line-height:20px;/*overflow:hidden;text-overflow:ellipsis; white-space:nowrap;*/}
.case_text dl{display:flex;flex-direction:row-reverse;}
.case_text dl dd{display:none;}

/*mb_overlay*/
.mb_overlay{display:none;}

/*video_overlay*/
.video_overlay{width:100%;height:100%;margin:0 auto;position:fixed;top:0;left:0;background:rgba(0,0,0,0.7);z-index:500;
display:none;align-items:Center;justify-content:center;}
.video_overlay ul{width:90%;height:auto;position:relative;}
.video_overlay_close{width:50px;height:50px;position:absolute;right:-10px;top:-60px;cursor:pointer;}
.video_overlay ul li{width:100%;height:100%;background:#000;padding:10px;border-radius:5px;box-shadow:0 0 5px #333;}
.video_overlay ul li video{width:100%;height:auto;}




}