@charset "utf-8"; 
/* reset */  
body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,form,fieldset,legend,textarea,p,blockquote,th,td,input,select,textarea,button {margin:0;padding:0}  /* 初始化标签在所有浏览器中的margin、padding值 */  
fieldset,img {border:0 none}  /* 重置fieldset（表单分组）、图片的边框为0*/  
dl,ul,ol,menu,li {list-style:none}   /* 重置类表前导符号为onne,menu在HTML5中有效 */  
blockquote, q {quotes: none}   /* 重置嵌套引用的引号类型 */  
blockquote:before, blockquote:after,q:before, q:after {content:'';content:none}  /* 重置嵌套引用*/  
input,select,textarea,button {vertical-align:middle}  /* 重置表单控件垂直居中*/  
button {border:0 none;background-color:transparent;cursor:pointer}  /* 重置表单button按钮效果 */  
body {background:#fff}   /* 重置body 页面背景为白色 */  
body,th,td,input,select,textarea,button {font-size:12px;line-height:1 ;font-family:"微软雅黑", "黑体","宋体";color:#666} /* 重置页面文字属性 */  
a {color:#666;text-decoration:none}  /* 重置链接a标签 */  
a:active, a:hover {text-decoration:none}   /* 重置链接a标签的鼠标滑动效果 */  
address,caption,cite,code,dfn,em,var {font-style:normal;font-weight:normal}  /* 重置样式标签的样式 */  
caption {display:none;}    /* 重置表格标题为隐藏 */  
table {width:100%;border-collapse:collapse;border-spacing:0;table-layout:fixed;}    /* 重置table属性 */  
img{vertical-align:top}  /* 图片在当前行内的垂直位置 */  
   i{
font-style: normal;   }
/* 页面设置 */  
   
  /* 取消a标签点击后的虚线框 */  
a {outline: none;}    
a:active {star:expression(this.onFocus=this.blur());}  
   
 /* 设置页面文字等在拖动鼠标选中情况下的背景色与文字颜色 */  
/*   
::selection {color: #fff;background-color: #4C6E78;}      
::-moz-selection {color: #fff;background-color: #4C6E78;}   
*/  

/*清除浮动*/  
.clear{clear: both;}  
/*清除浮动--推荐使用*/  
.clearfix:before,.clearfix:after{content: '';display: table;}  
.clearfix:after{clear: both;}


    

body,html{
	background-color: #fff;
	-webkit-text-size-adjust: 100% !important;
}
.da_logo_head{
	width: 750px;
	margin: 0 auto;
	height: 296px;
	/* background-image: url('../images/da_head_con.png'); */
	background-position: top;
	background-size:cover;
	background-repeat: no-repeat;
}
.left_logoa{
	width: 162px;
	height: 162px;
	border-radius: 8px;
	margin-top: 128px;
	margin-left: 40px;
	float: left;
	border-radius: 8px;
	overflow: hidden;
	position: relative;
	top: 34px;
}
.left_logoa img{
	width: 100%;
	height: 100%;
	display: block;
	font-size: 0;
}
.left_wza{
	width: 500px;
	float: left;
	margin-top: 144px;
	padding-left: 20px;
	
}
.left_wza p:nth-of-type(1){
	font-size: 36px;
	line-height: 50px;
	color: #FFFFFF;
	height: 50px;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}
.left_wza p:nth-of-type(2){
	font-size: 28px;
	line-height: 40px;
	color: #FFFFFF;
	height: 40px;
	/* padding-top: 12px; */
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}
.left_wza p:nth-of-type(3){
font-size: 28px;
	line-height: 40px;
	color: #FFFFFF;
	padding-top: 4px;
}
.erweima{
	width: 44px;
	height: 44px;
	background-color: #fff;
	margin-top: 194px;
	margin-left: 99px;
	float: left;
}
.erweima img{
	width: 100%;
	height: 100%;
	display: block;
	font-size: 0;
}
.neirong_con{
	width: 750px;
	margin: 0 auto;
}
.new_main{
	width: 750px;
	margin: 0 auto;
}
.xhead_cona{
	width: 100%;
	line-height: 88px;
	font-size: 34px;
	color: #303133;
	padding: 0 32px;
	padding-left: 58px;
	box-sizing: border-box;
	position: relative;
	background-color: #F9F9F9;
}
.xhead_cona span{
	float: right;
	font-size: 28px;
	color: #909399;
	padding-right: 32px;
	background-image: url(../images/retirn_xsanjiao.png);
	background-position: right center;
	background-size: 32px 32px;
	background-repeat: no-repeat;
	
}
.xhead_cona:after{
	content: '';
	display: block;
	width: 6px;
	height: 32px;
	border-radius: 3px;
	background-color: #0044A1;
	position: absolute;
	left: 32px;
	top: 50%;
	margin-top: -16px;
	
}
.wza_jianjie{
	line-height: 42px;
	color: #303133;
	padding-top: 20px;
	
	font-size: 30px;
	max-height: 126px;
	  overflow: hidden;
	    text-overflow: ellipsis;
	    display: -webkit-box;
	    -webkit-line-clamp: 3;
		width: 686px;
		margin: 0 auto;
		margin-bottom: 60px;
	    -webkit-box-orient: vertical;
}
.suoshu_qiuyuan{
	width: 686px;
	margin: 0 auto;
	overflow-x: auto;
	padding-top: 32px;
}
.list_icona{
	float: left;
	width: 140px;
	margin-right: 40px;
}
.list_icona span:nth-of-type(1){
	width: 140px;
	height: 140px;
	
	display: block;
	border-radius: 8px;
	overflow: hidden;
	
}
.list_icona span:nth-of-type(1) img{
	width: auto;
	height: 100%;
	display: block;
	font-size: 0;
}
.list_icona span:nth-of-type(2){
	width: 100%;
	font-size: 28px;
	color: #303133;
	padding-top: 20px;
	display: block;
	text-align: center;
	padding-bottom: 80px;
	word-wrap:break-word
} 
.main_cona{
	width: 1500px;
}

.suoshu_qiuyuan::scrollbar {
  display: none;
}
.suoshu_qiuyuan::-webkit-scrollbar {
  display: none;
}


.jiaoxue_listaa{
	width: 686px;
	margin: 0 auto;
	overflow-x: auto;
	padding-top: 32px;
	padding-bottom: 60px;
}
.jiaoxu_lista{
	width: 1500px;
}
.qz_imgsa{
	float: left;
	
	width: 240px;
	height: 134px;
	border-radius: 16px;
	overflow: hidden;
	margin-right: 20px;
	text-align: center;
}
.qz_imgsa img{
	width: auto;
	height: auto;
	max-width: 100%;
	max-height: 100%;
	display: inline-block;
	font-size: 0;
}
.loading{
	text-align: center;
	font-size: 24px;
	color: #000;
	line-height: 60px;
	height: 50px;
	padding-top: 40px;
}
.jiaoxue_listaa::scrollbar {
  display: none;
}
.jiaoxue_listaa::-webkit-scrollbar {
  display: none;
}
.shipin_litsa{
	width: 686px;
	margin: 0 auto;
	padding-top: 32px;
	padding-bottom: 20px;
}
.leyu_inga{
	float: left;
	width: 328px;
	margin-right: 30px;
	margin-bottom: 40px;
}
.leyu_inga:nth-of-type(2n){
	margin: 0;
	margin-bottom: 40px;
}
.imga_head{
	width: 100%;
	height: 184px;
	border-radius: 16px;
	overflow: hidden;
	
	position: relative;
}
.imga_head:after{
	content: '';
	display: block;
	width: 49px;
	height: 49px;
	
	background-image: url('../images/play_dzazhn.png');
	background-repeat: no-repeat;
	background-size: 49px 49px;
	background-position: center;
	position: absolute;
	left: 50%;
	top: 50%;
	margin-top: -24.5px;
	margin-left: -24.5px;
}
.imga_head img{
	width: 100%;
	height: 100%;
	display: block;
	font-size: 0;
}
.video_wza{
	width: 304px;
	margin: 0 auto;
	padding-top: 12px;
	font-size: 30px;
	line-height: 42px;
	color: #303133;
	
}
.peixun_chanpin{
	width: 686px;
	margin: 0 auto;
	padding-top: 32px;
	padding-bottom: 60px;
}
.li_peuxunas{
	padding-bottom: 40px;
	
	}
.li_peuxunas:last-child{
	padding: 0;
}
.left_px_imga{
	width: 144px;
	height: 144px;
	border-radius: 16px;
	
	overflow: hidden;
	text-align: center;
	float: left;
}
.left_px_imga img{
	width: auto;
	height: auto;
	display: inline-block;
	max-width: 100%;
	max-height: 100%;
	font-size: 0;
}
.elft_px_wzas{
	float: left;
	width: 522px;
	padding-left: 20px;
}
.elft_px_wzas p:nth-of-type(1){
	line-height: 44px;
	font-size: 32px;
	color: #303133;
	max-height: 88px;
	    overflow: hidden;
	    text-overflow: ellipsis;
	    display: -webkit-box;
	    -webkit-line-clamp: 2;
	    -webkit-box-orient: vertical;
		height: 88px;
}
.elft_px_wzas p:nth-of-type(2){
	font-size: 28px;
	color: #FF5200;
	line-height: 40px;
	padding-top: 12px;
}

.zxun_litas{
	padding-top: 32px;
	width: 686px;
	margin: 0 auto;
	padding-bottom: 60px;
	
}
.zxun_qzasjklista{
	padding-bottom: 40px;
}
.zxun_qzasjklista:last-child{
	padding: 0;
}
.left_zxuna{
	float: left;
	width: 144px;
	height: 144px;
	
	border-radius: 16px;
	overflow: hidden;
	text-align: center;
}
.left_zxuna img{
	width: auto;
	height: auto;
	display: inline-block;
	max-height: 100%;
	max-width: 100%;
}
.left_zxun_wzas{
	float: left;
	width: 522px;
	padding-left: 20px;
	
}
.left_zxun_wzas p:nth-of-type(1){
	line-height: 42px;
	font-size: 30px;
	color: #303133;
	height: 84px;
	max-height: 84px;
	    overflow: hidden;
	    text-overflow: ellipsis;
	    display: -webkit-box;
	    -webkit-line-clamp: 2;
	    -webkit-box-orient: vertical;
}
.left_zxun_wzas p:nth-of-type(2){
	padding-top: 12px;
	font-size: 28px;
	color: #606266;
	line-height: 40px;
	
}
.left_zxun_wzas p:nth-of-type(2) span:nth-of-type(1){
	margin-right: 20px;
	float: left;
}
.left_zxun_wzas p:nth-of-type(2) span:nth-of-type(2){
	
	
	
	float: right;
	
	line-height:52px;
	background-image: url('../images/fenxinags_con.png');
	background-position: left 12px;
	background-size: 28px 28px;
	background-repeat: no-repeat;
	margin-right: 20px;
	position: relative;
	
	padding-left: 45px;
	font-size: 20px;
}
.left_zxun_wzas p:nth-of-type(2) span:nth-of-type(3){
	float: right;
	
	line-height:52px;
	background-image: url('../images/pinluna_con.png');
	background-position: left 13px;
	background-size: 28px 28px;
	background-repeat: no-repeat;
	margin-right: 20px;
	position: relative;
	font-size: 20px;
	
	padding-left: 45px;
}
.rongyu_cona{
	width: 686px;
	    margin: 0 auto;
	    padding-top: 32px;
	    padding-bottom: 60px;
}
.rony_imga {
    float: left;
    width: 328px;
    margin-right: 30px;
	margin-bottom: 19px;
}
.xhead_logo{
	position: fixed;
	left: 50%;
	margin-left: -375px;
	top: 0;
	width: 750px;
	height: auto;
	z-index: 66;
}
.ryuasimga_head {
    width: 100%;
    height: 184px;
    border-radius: 16px;
    overflow: hidden;
    
    position: relative;
}
.ryuasimga_head img{
	width: 100%;
	height: 100%;
	display: block;
	font-size: 0;
}
.rony_imga:nth-of-type(2n){
	margin: 0;
	margin-bottom: 19px;
}
.rongyu_wza {
    width: 304px;
    margin: 0 auto;
    padding-top: 12px;
    font-size: 30px;
    line-height: 42px;
    color: #303133;
	max-height: 126px;
	overflow: hidden;
	    text-overflow: ellipsis;
	    display: -webkit-box;
	    -webkit-line-clamp: 3;
	    -webkit-box-orient: vertical;
}


.jianjie_con{
	margin: 0 32px;
	padding-top: 18px;
}
.wenzi_jianjieneirongash{
	width: 686px;
	margin: 0 auto;
	padding: 20px;
	box-sizing: border-box;
	font-size: 30px;
	line-height: 42px;
	color: #303133;
	border-radius: 8px;
	border:1px solid #BFC2CC;
}

.wushuju_con4 {
    background-image: url(../images/bg_organize_space_teachers_no_data.png);
    background-size: 100% 100%;
    background-position: center;
    height: 100px;
    background-repeat: no-repeat;
    text-align: center;
    line-height: 100px;
    font-size: 24px;
    color: #508CEE;
    
    
	width: 750px;
}
.qiuyuan_litsa{
	width: 686px;
	margin: 0 auto;
	padding-top: 44px;
	
}


.list_icona2{
	float: left;
	width: 128px;
	margin-right: 52px;
}
.list_icona2:nth-of-type(4n){
	margin: 0;
}
.list_icona2 span:nth-of-type(1){
	width: 128px;
	height: 128px;
	
	display: block;
	border-radius: 8px;
	overflow: hidden;
	
}
.list_icona2 span:nth-of-type(1) img{
	width: 100%;
	height: 100%;
	display: block;
	font-size: 0;
}
.list_icona2 span:nth-of-type(2){
	width: 100%;
	font-size: 28px;
	color: #303133;
	padding-top: 20px;
	display: block;
	line-height: 30px;
	text-align: center;
	height: 120px;
    word-wrap: break-word;
} 
.huanjin_lisya{
	width: 686px;
	margin: 0 auto;
	padding-top: 44px;
}
.huanj_qzlisya{
	float: left;
	    width: 328px;
	    margin-right: 30px;
		margin-bottom: 40px;
}
.huanj_qzlisya:nth-of-type(2n){
	margin: 0;
	margin-bottom: 40px;
}
.hj_imga{
	width: 100%;
	    height: 184px;
	    border-radius: 16px;
	    overflow: hidden;
	    position: relative;
	text-align: center;
}
.hj_imga img{
	width: auto;
	height: auto;
	max-width: 100%;
	max-height: 100%;
	display: inline-block;
	font-size: 0;
}
.video_lisya{
	width: 686px;
	margin:0 auto;
	padding-top: 44px;
}
.peixun_lisya{
	width: 686px;
	margin:0 auto;
	padding-top: 44px;
}
.zixun_lisya{
	width: 686px;
	margin:0 auto;
	padding-top: 44px;
}
.rongyu_lisya{
	width: 686px;
	margin:0 auto;
	padding-top: 44px;
}
.posi_block{
	width: 100%;
	height: 100%;
	background-color: rgba(0,0,0,.7);
	position: fixed;
	left: 0;
	top: 0;
	display: none;
	z-index: 99;
}
.posi_block img{
	width: auto;
	height: auto;
	max-height: 80%;
	max-width: 100%;
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%,-50%);
}