.about_2{
	padding-bottom:46px;
}
.about_2 .tit{
	text-align:center;
	color:#004673;
	font-weight:500;
	padding:64px;
}
.about_2 .text{
    text-align: justify;
	font-size:16px;
	color:#666666;
	padding:20px 0px;
}
.about_2 .text.b{
	font-weight:500;
		font-size:19px;
	color:#292929;
}
.about_2 .img {
	overflow:hidden;
}
.about_2 .img img{
	width:48%;
}
.about_2 .img img:nth-child(1){
	float:left
}
.about_2 .img img:nth-child(2){
	float:right
}

.about_3{
	/*height:930px;*/
	padding-bottom:80px;
}
.about_3 .tit{
	text-align:center;
	color:#fff;
	font-weight:500;
	padding:80px;
}
.about_3 video{
	width:70%;
	display:block;
	margin:0 auto;
	object-fit: cover;
}
.about_4{
	padding-bottom:80px;
}
.about_4 .tit{
	text-align:center;
	color:#004673;
	font-weight:500;
	padding:80px;
}
.about_4 .img img{
	width:100%;
}
.zzjg{
	width:4%;
	height:3px;
	background-color:#004673;
	margin-left:48%;
	margin-top:13px;
}
@media  screen and (max-width :1000px) {
	.about_4 .tit{
	text-align:center;
	color:#004673;
	font-weight:500;
	padding:35px;
		margin-left:0px;
}
	.about_2 .tit{
	text-align:center;
	color:#004673;
	font-weight:500;
	padding:50px;
}
	.xcsp{
		margin-top:-12%;
	}	
	.zzjg{
	width:20%;
	height:3px;
	background-color:#004673;
	margin-left:38%;
	margin-top:10px;
}
.about_2 .text.b{
	font-weight:500;
		font-size:14px;
	font-family:Microsoft YaHei;
	line-height:25px;
	color:#292929;
}
.about_3 video{
	width:100%;
	display:block;
	margin:-40px auto;
	object-fit: cover;
}
.about_4 .img img{
	width:100%;
	margin-top:-3%;
}	
	.about_3 .tit{
	text-align:center;
	color:#fff;
	font-weight:500;
	padding:40px;
		margin-bottom:7%;
}
}