@media (min-width: 1200px) {
    .container{width: 1560px}
}
a{color: #333333;padding: 0;}
a:hover{color: #7494D9;text-decoration:none}
body{font-family: "Microsoft Yahei", "Helvetica", "STHeiti", "Droid Sans Fallback"}
.clear{clear: both}
.bg{background-color: #F8F8FC}
.main_nav{border-bottom: 1px solid #C9C9C9;margin-top: 5px }
.index_search{border: none}
.index_search_bt{border: none}
.index_nav_li:hover .dropdown-menu{display: block }
.index_nav_li:hover{background-color: #fff0 !important;color: #7494D9}
.index_nav_li:visited{background-color: #fff0 !important}
.text_line_2{overflow: hidden;text-overflow: ellipsis;display: -webkit-box;-webkit-line-clamp: 2;-webkit-box-orient: vertical;}
.text_line_1{overflow: hidden;text-overflow: ellipsis;display: -webkit-box;-webkit-line-clamp: 1;-webkit-box-orient: vertical;}
.color_be{color: #BEBEBE}
.f_14{font-size: 14px;}
.padding_0{padding: 0 !important}
.dropdown-menu{min-width: auto;}
.nav_xs{display: none;}
.title{font-size: 18px;font-weight: bold;}
.brief{font-size: 14px;margin-top: 20px;}
/*首页*/
.active a{color: #7494D9 }
.w_100{width: 100% !important}
.index_logo{height: 30px;margin-top: 10px}
.index_logo img{height: 100%}
.index_nav_wx{margin-top: 15px}
.list_img{width: 247px;height:139px;}
.index_arc{margin-top: 83px}
#index_video{object-fit: fill}
.index_class_ch{border-left: 4px solid #7494D9;padding-left: 18px;font-size: 22px}
.index_class_en{border-left: 4px solid #E4E4E4;padding-left: 18px;font-size: 22px;color: #ACACAC}
.index_classify{margin-bottom: 57px}
.index_arc_title{margin-top: 0;margin-bottom: 18px;font-size: 18px;overflow: hidden;text-overflow: ellipsis;display: -webkit-box;-webkit-line-clamp: 1;-webkit-box-orient: vertical;}
.index_arc_li{padding-left: 0;margin-top: 35px}
.index_arc_left{margin-right: 80px}
.index_video_img{width:100%;height:100%}

.index_arc_content{overflow: hidden;text-overflow: ellipsis;display: -webkit-box;-webkit-line-clamp: 2;-webkit-box-orient: vertical;height:40px;}
.index_arc_bottom{margin-top: 12px;color: #BFBFBF}
.index_img_brief{margin-top: 303px;color: #ffffff;border-top-left-radius: 10px;border-top-right-radius: 10px;background-color: #0b0b0b70;height: 270px;width: 468px}
.profile{background: url("../images/profile.png") no-repeat;height: 573px;padding: 0}
.profile_name{font-size: 20px;font-weight: bold;margin-top: 49px}
.profile_content{line-height: 30px;margin-top: 18px}
.profile_bottom{margin-top: 40px}
.profile_bottom a{color:#ffffff;}
.video_box{margin-top: 108px;background-color: #F8F8FC; height: 480px}
.index_video_top{margin-top: 68px}
.index_video_bottom{margin-left: 104px;padding: 0}
.index_video_list{margin-right: 19px;margin-bottom: 18px;overflow: hidden;position: relative;z-index: 1;transition: all .5s;width: 321px;height: 181px}
.index_video_more{border: 1px solid #9A9A9A;color: #9A9A9A;padding: 9px 20px}
.video_brife{padding-top:20%;color:#ffffff;transform: translateY(-50%);position: absolute;top: 50%;right: -100%;z-index: 2;transition: all .5s;background-color: #7494d9d1;width: 100%;height: 100%}
.index_video_list:hover .video_brife{right: 0%;}
.video_more{border: 1px solid #ffffff;padding: 5px 10px;color: #ffffff}
.video_title{margin-bottom: 10px;font-size: 14px;}
.video_index_brife{font-size: 14px;margin-left: 10px;color: #333;font-weight: normal;float: right;line-height: 20px;}
.video_view_title{font-size: 25px;}
.index_arc_hot{margin-top: 190px}
.seo_time{margin-right: 24px; line-height: 35px;color: #CFCFCF;}
.seo_day{font-size: 41px; }

.seo_year{font-size: 12px; }
.seo_list{width: 580px}
.seo_list h2{margin-top: 0;}
.seo_title{font-size: 18px;font-weight: bold;margin-bottom: 10px}
.seo_li{border-bottom: 1px solid #eeeeee;padding: 15px;border: 1px solid #fff0}
.seo_li:hover{border:1px solid #7494D9;}
.seo_li:hover a{color: #7494D9}
.seo_li a{color: #333;}
/*.seo_li a:hover{color: #7494D9;}*/

.validate-box {padding-top: 30px;position: absolute;width: 340px;right: 50px;top: 40px;display: none;z-index: 999;}
.validate-box .res-wechat {width: 340px;height: 178px;position: absolute;bottom: -176px;display: none;z-index: 999;}
.validate-box .validate-box-main {height: 170px;background-color: #fff;border-radius: 6px;box-shadow: 0px 3px 6px rgba(0, 0, 0, 0.16);box-sizing: border-box;padding: 28px 32px;}
.validate-box .validate-box-top {position: absolute;display: block;width: 0;height: 0;border-bottom: 28px solid #fff;border-left: 15px solid transparent;border-right: 15px solid transparent;left: 200px;top: 2px;}
.validate-box input {display: block;height: 47px;border-radius: 100px;border: 1px solid rgba(220, 220, 220, 1);box-sizing: border-box;width: 100%;padding-left: 20px;}
.validate-box input::placeholder {color: #DCDCDC;font-size: 18px;}
.validate-box .submit-validate {width: 100%;height: 47px;cursor: pointer;margin-top: 20px;}

/*尾部*/
.footer{background-color: #F8F8FC;line-height: 50px;margin-top: 100px;font-size:12px;}
.link-weixin::before {content: "";position: absolute;width: 15px;height: 15px;background: url("../images/weixin.png") center no-repeat;background-size: auto;background-size: cover;left: -20px;top: 17px;}
.copy-img {width: 16px;height: 16px;margin-left: 5px !important;}
/*文章*/
.arc_nav_url{margin-top: 30px;margin-bottom: 15px;}
.arc_classify{margin-top: 90px;margin-bottom: 44px;font-size: 24px;font-weight: bold}

.list_left{padding: 0; width: 27%}
.list_right{padding: 0;padding-left: 14px;width: 73%}
.list_right .arc_title{margin: 0;font-size: 24px;font-weight: bold;overflow: hidden;text-overflow: ellipsis;display: -webkit-box;-webkit-line-clamp: 1;-webkit-box-orient: vertical;}
.list_right .arc_brief{font-size: 16px;color: #666666;margin-top: 14px;padding-right: 5px;height:45px;}
.list_right .arc_bottom{color: #666666;font-size: 16px;margin-top: 22px}

.arc_list {border-bottom: 1px solid #E6E9EE;padding: 30px 15px;border-top: 1px solid #fff0;border-left: 1px solid #fff0;border-right: 1px solid #fff0;}
.arc_list:hover{border: 1px solid #7494D9;}
.arc_list:hover a{color: #7494D9}

.hot{font-size: 22px;border-left: 4px solid #7494D9;line-height: 19px;padding-left: 18px;margin-bottom: 12px;margin-top: 50px;}
.hot-box{margin-left: -15px;}
.hot_title{font-size: 19px; border-bottom: 1px solid #E6E9EE;line-height: 26px;padding-bottom: 18px;padding-top: 19px}
.hot_title a{color: #666666}
.hot_title a:hover{color: #7494D9;text-decoration: none}
.hot_list {border-bottom: 1px solid #E6E9EE;padding: 19px 0 18px 0;font-size: 19px}
.hot_list a{color: #666666}
.hot_list a:hover{color: #7494D9}
.arc_view{}
.arc_view_title{font-size: 30px;font-weight: bold;}
.arc_view_time{color: #666666;margin-top: 20px;border-bottom: 1px solid #E6E9EE;padding-bottom: 10px ! important;}
.arc_writer{margin-right: 20px;}
.page{margin: 10px 0 0; text-align: center;line-height: 50px;}
.page a{padding: 9px 16px ;font-size: 16px;background-color: #F5F5F5;border-radius: 4px;}
.page a:hover{background-color: #dfdfdf;color: #8F8F8F;}
.page .prev{padding: 9px 16px ;font-size: 16px;background-color: #F5F5F5;border-radius: 4px;width: 49%}
.page .next{padding: 9px 16px ;font-size: 16px;background-color: #F5F5F5;border-radius: 4px;width: 49%}
.page .list_prev{padding: 9px 16px ;font-size: 16px;background-color: #F5F5F5;border-radius: 4px;}
.page .list_next{padding: 9px 16px ;font-size: 16px;background-color: #F5F5F5;border-radius: 4px;}
.page .current{background-color:#7494D9;color: #ffffff}
.content{font-size: 18px;margin-top: 20px;}
.content h2{font-size: 20px;font-weight: bold;}
.content h3{font-size: 18px;font-weight: bold;}
.arc_label a{color: #999999;font-size: 16px; border: 1px solid #cccccc;padding: 10px;}
/*视屏*/
.video_nav{margin: 30px 0 30px 0;}
.video_banner{margin-top: 37px;height: auto;}
.video_bg{background-color: #F8F8FC;height: 430px;margin-top: 55px;}
.video_h{margin:55px 0 50px 0;border-left: 4px solid #7494D9;  font-size: 22px; font-weight: bold;line-height: 19px;padding-left: 18px;}
.more{font-size: 16px;padding:9px 43px;margin:55px 0 50px 0;border: 1px solid #9A9A9A }
.more a{color: #9A9A9A}
.video_list_left{width: 355px;}
.video_list_right{padding: 0}
.video_classify_nav{margin-top: 31px;margin-bottom: 38px;}
.video_classify_h{margin-bottom: 56px;font-size: 22px;font-weight: bold}
.classify_bottom_botder{background-color: #7494D9;width: 19px;height: 4px;margin: auto ;margin-top: 10px;}
.video_left{width: 76%;padding: 0;height: 665px;}
.video_right{width: 20%;background-color: #F8F8F8;}
.video_list_h{font-size: 20px;margin: 28px 0 24px 0;}
.video_list_title{font-weight: 600;margin-top: 5px;font-size: 14px;}
.video_list_l{margin-left: 17px;width:90px;}
.video_list{margin-bottom: 18px;}
.video_time{font-size: 12px;color: #BEBEBE}
.video_right_list{overflow: scroll;height: 665px}
.video_bottom_title{font-size: 26px;padding: 0;margin-top: 30px;}
.video_hot{margin-top: 40px;}
.video_hot_time{font-size: 10px;color: #BEBEBE}
.video_hot_list li{margin-right: 17px;margin-top: 17px;width: 272px;}
.video_hot_right{color: #666666;font-size: 19px;line-height: 26px;border-bottom: 1px solid #E6E9EE;padding-bottom: 20px;margin-bottom: 20px;}
.video_hot_box{margin-top: 15px;}
.video_hot_title{margin-top: 10px;font-size: 16px;height: 40px;}
.video_view_img{width: 154px;height: 87px;}
.video_related_img{width: 272px;height: 155px;}
.video_active_img{border:5px solid #333333;}
.list_video{margin-left: 104px;}
/*专栏*/
.special_nav{margin-top: 30px;margin-bottom: 15px;}
.special_banner{margin-bottom: 40px;margin-top: 40px}
.special_h{font-size: 24px;font-weight: bold;margin-bottom: 41px}
.special_left{margin-right: 14px;}
.special_right{width: 70%}
.special_list li{padding: 31px 0 31px 0;}
.special_list li a{padding: 31px 0 31px 0; border-bottom: 1px solid #E6E9EE}
.special_list li a:hover{border: 1px solid #7494D9;  }
.special_list .special_title{font-size: 24px;font-weight: bold}
.special_list .special_brife{color: #666666;font-size: 16px;margin-top: 14px;}
.special_list .special_bottom{color:#666666;font-size: 12px;margin-top: 14px; }
.relevant{margin-top: 40px;}
/*搜索*/
.search_box{margin: 50px 0 50px 0;}
.search_type label{padding: 18px 30px;font-size: 20px;}
.search{height: 67px;background-color: #F8F8FC;border: none;font-size: 18px;padding-left: 70px;border-radius: 9px;}
.search:focus{outline: none}
.search_icon{position: absolute;top: 25px;left: 40px; font-size: 16px;}
.search_sub{width: 123px;height: 67px;border: 1px solid #7494D9;border-radius: 9px;margin-right: -20px;font-size: 20px;font-weight: bold;background-color: #F8F8FC08}
.search_sub_active{background-color: #7494D9;color: #ffffff}
.not_title{font-size: 20px}
.not_content{color: red;}
/*tag*/
.tag-box{margin: 40px;}
.tag-items li{display: inline-block;padding: 15px 30px;float: left;margin-right: 15px;margin-bottom: 36px;box-sizing: border-box;border: 1px solid rgba(112, 112, 112, 1);font-size: 20px;font-weight: bold;}

.page-box{margin-top: 30px;}
.page-box h2{font-size: 20px;font-weight: bold;}
.page-box h3{font-size: 18px;font-weight: bold;}
.page-content img{max-width: 100%;height: auto;}

/*留言板*/
.message_box{width: 569px;margin-top: 50px;}
.message_from_box{margin-top: 50px;}
.message_title{font-size: 22px;}
.message_input_title{font-size: 18px;font-weight: bold;line-height: 50px;}
.message_input{width: 443px;height: 50px; line-height: 50px;border-radius: 8px;border:1px solid #707070;padding-left: 10px;}
.message_input_yz{width: 243px;height: 50px;border-radius: 8px;border:1px solid #707070;padding-left: 10px;}
.message_yz_box{width: 443px;}
.click_yz{color: #ffffff;background-color: #7494D9 ;padding: 15px 34px;border-radius: 8px;border: none;font-weight: bold}
.click_yz_click{background-color: #BCBEC2;cursor: default}
.message_input_box{margin-bottom: 10px;}
.message_content{border-radius: 8px;border:1px solid #707070;height: 167px;width: 100%}
.message_ts{font-size: 14px;color: #999999;margin-top: 10px;}
.message_submit{color: #ffffff;background-color: #7494D9 ;padding: 13px 34px;border-radius: 8px;border: none}
.message_red{color: red;margin-left: 100px;}
.message_code_box{width: 100%;height: 100%;background-color: #0b0b0b38;position: fixed;top: 0}
.msg{width: 20%;height: 10%;position: absolute;top: 40%;right: 40%;font-size: 18px;background-color: #ffffff;padding: 20px;}
.teacher{text-align: center;}
/*手机端调整*/
.xs_arc_classify{display: none}
.sx_nav{display: none}
.xs_search_box{display: none;}
@media (max-width:800px ) {
    .teacher img{width: 100%; height: auto;}
    h2{font-size: 18px;}
    h1{font-size: 20px;}
    h3{font-size: 16px;}
    .xs_padding_0{padding: 0 !important;}
    .xs_search_box{display: block}
    .glyphicon{margin-right: 5px;}
    .xs_footer{font-size: 12px;}
    .row{margin:0;}
    .col-sm-12{padding: 0;}
    .col-sm-8{padding: 0;}
    .nav_xs{display: block}
    .seo_list{width: 100%}
    .img100{width: 100%}
    .imgH100{height: 100%}
    .xs_text_line_1{overflow: hidden;text-overflow: ellipsis;display: -webkit-box;-webkit-line-clamp: 1 !important;-webkit-box-orient: vertical;}
    .xs_text_line_2{overflow: hidden;text-overflow: ellipsis;display: -webkit-box;-webkit-line-clamp: 2 !important;-webkit-box-orient: vertical;}
    .xs_list_nav{display: block ! important;}
    .navbar-header{margin: 0 !important}
    .xs_padding{padding: 0}
    .main_nav{padding: 0}
    .lazy{max-width: 100%;height:auto;}
    .sx_nav{z-index: 999;position: fixed;right: 0;background-color: #ffffff;top: 0;margin-top: 0;height: 100%;width: 40%;overflow:scroll;display: none;}
    .sx_nav a{color: #333333; }
    .sx_nav li{line-height:40px; padding-left: 1.4rem}
    .index_bt_bg{background-color: #333333}
    .sx_bg{width: 100%;height: 100%;background: #333333;opacity: 0.71;position: fixed;z-index: 888;display: none}
    .arc_nav_url{margin-top: 15px;margin-bottom: 10px;}
    .video_banner{margin-top: 15px;}
    .content{font-size: 15px;}
    .arc_view_title{font-size: 20px;line-height: 25px}
    .container{width: 100%}
    .video_box{background-color: #fff0;margin-top: 0;height: auto;margin-bottom: 20px;}
    .index_video_bottom{margin-left:0 }
    .index_img_brief{width: 100%}
    .index_arc{margin-top: 0}
    .xs_arc_classify{display: block;margin-bottom:0;margin-top: 20pt;}
    .xs_arc_classify a{font-size: 16px}
    .xs_arc_classify .xs_active{color: #7494D9;background-image: linear-gradient(#ffffff, #f2f2f2);font-size: 18px ! important;}

    .xs_arc_1{margin-right: 50px;}
    .index_arc_left{}
    .index_arc_right{display: none}
    .index_xs_arc{margin-bottom: 20px;}
    .xs_profile_content{background-color: #7494D9;font-size: 11px;color: #ffffff;padding: 10px 25px 0px 16px;line-height: 17.1px}
     .personal_left{height: 212px;}
    .personal_right{height: 212px;}
    .index_classify{padding: 0;}
    .index_video_list{width: 46%}
    .index_video_list:nth-of-type(even){margin-right: 0;}
    .xs_video_time{font-size: 12px; color: #9E9E9E}
    .xs_video_title{margin-top: 12px;height: 35px;font-size: 16px;}
    .seo_list{margin-top: 15px;padding-bottom: 10px;}
    .seo_list h2{margin-top: 0;}
    .seo_li{padding: 0;border-bottom: 1px solid #EEEEEE}
    .seo_li:hover{border: none}
    .footer{margin-top: 50px;}
    .index_logo{float: left;margin-left: 15px;}
    .index_title{float: left;margin-left: 5%;font-size: 18px;font-weight: bold;line-height: 50px;}
    .seo_li a:hover{border: none;}
    .index_video_list{height: auto;}
    .index_classify{margin-bottom: 10px;}
    .index_arc_li{margin-top: 15px; border-bottom: 1px dashed #DCDCDC;padding-bottom: 10px;}
    .index_class_ch{font-size: 16px}
    .index_class_en{font-size: 12px}
    .title{font-size: 16px;font-weight: bold;}
    .brief{font-size: 12px;margin-top: 15px;}
    .index_arc_content{line-height: 20px;}
    .xs_seo_time{margin-left: 20px;}
    /*文章*/
    .list_left{width: 40%;height:90px;}
    .list_right{width: 58%}
    .list_right .arc_title{font-size: 14px;-webkit-line-clamp: 2;line-height: 20px;}
    .list_right .arc_brief{font-size: 12px;}
    .search_type{color: red;border: 1px solid red;margin-right: 5px;}
    .arc_list:hover{border: none}
    .arc_list{padding: 10px 0;border-bottom: 1px dashed #E6E9EE}
    .prev{overflow: hidden;text-overflow: ellipsis;display: -webkit-box;-webkit-line-clamp: 1;-webkit-box-orient: vertical;padding: 10px;line-height: 40px;margin-bottom: 10px;}
    .next{overflow: hidden;text-overflow: ellipsis;display: -webkit-box;-webkit-line-clamp: 1;-webkit-box-orient: vertical;padding: 10px;line-height: 40px;}
    .arc_classify{margin: 15px 0 12px 0;}
    .page .prev{float: none !important;width: 100%;display: -webkit-box;-webkit-line-clamp: 1;-webkit-box-orient: vertical;text-align: left;}
    .page .next{float: none !important;width: 100%;display: -webkit-box;-webkit-line-clamp: 1;-webkit-box-orient: vertical;text-align: left;}
    .list_img{height: 100%;}
    .hot-box{margin-left: 0;}
    .content h1{font-size: 20px;}
    .content h2{font-size: 18px;line-height: 25px;}
    .content h3{font-size: 16px;}
    
    /*视频*/
    .video_bg{height: auto;}
    .video_h{font-size: 16px;margin: 25px 0 15px 0;}
    .more{padding:0;border: none;margin: 25px 0 15px 0;}
    .video_bg{background-color: #ffffff;margin-top: 25px;}
    .video_left{width: 100%;height: auto}
    .xs_video_box{overflow: auto;margin-bottom: 20px;}
    .xs_video{width: 300%}
    .xs_video_list{float: left;margin:15px 15px 15px 0;width: 157px;}
    .xs_video_list_time{color: #BEBEBE}
    .video_bottom_title{font-size: 21px;margin: 15px auto;}
    .video_view_title{font-size: 16px;}
    .xs_hot:nth-of-type(even){margin-right: 0}
    .xs_video_hot{padding: 0 15px;}
    .hot{border: none;padding: 0}
    .video_list_right{padding: 15px;}
    .video_hot{margin-top: 15px;padding-left: 15px;}
    .xs_video_list_img{height: 87px;}
    .video_title{margin-top: 10px;}
    .video_hot_list li{width: 46%}
    .video_related_img{width: 100%;height: auto;}
    .xs_video_list_title{margin-top: 10px;height: 40px;font-size: 14px;}
    .list_video{margin-left: 0}
     /*专栏*/
    .special_banner{padding: 0;margin-top: 0;}
    .special_banner img{height: 183px;width: 100%}
    /*搜索*/
    .search{height: 44px;padding-right: 20px;padding-left: 20px;}
    .search_icon{top: 15px;left: auto;right: 30px;}
    .list_right .arc_bottom{font-size: 11px; margin-top: 35px;}
    
    .xs_search_type{}

    /*/留言板*/
    .message_input_title{display: none}
    .message_input{width: 100%}
    .message_yz_box{width: 100%}
    .message_input_yz{width: 55%}
    .click_yz{padding: 15px 10px;}
    .message_msg{display: block}
    .message_submit{width: 100%}
    .message_red{margin-left: 0;}
    .message_input_box{margin-bottom: 20px;}
    .msg{width: 100%;height: auto;right: 0;text-align: center;}
    .footer{margin-top: 50px;padding-top: 10px;line-height: 30px;}
    .link-weixin::before{background:none}
}