/*about公共部分*/
.about_common{
	width: 100%;
	overflow: hidden;
	background:#fff url(../img/images/about_bg.jpg) no-repeat top center;
	background-size: 100%;
	padding: 60px 0 40px;
	position: relative;
	z-index: 11;
}
.about_menu{
	width: 100%;
	height: 50px;
	margin-bottom: 55px;
	border: 1px solid #f0f0f0;
	box-shadow: 0px 3px 3px rgba(0,0,0,0.04);
	text-align: center;
	background-color: #fff;
}
.about_menu li a{
	display: block;
	color: #000;
	height: 48px;
	font-size: 14px;
	line-height: 50px;
	width: 80px;
	margin: 0 auto;
}
.about_menu li.about_now a{
	font-weight: bold;
}
.about_content{
	color: #626262;
	font-size: 14px;
	line-height: 25px;
}
.about_content h1{
	color: #3e3e3e;
	font-size: 36px;
	margin: 35px 0 45px;
}
/*about页面独有*/
/*荣誉资质的分类 star*/
.qualification_menu{
	width: 600px;
	margin: 0 auto 50px;
	overflow: hidden;
}
.qualification_menu li{
	width: 150px;
	height: 50px;
	float: left;
	text-align: center;
	line-height: 50px;
	font-size: 24px;
	margin: 0 25px;
	cursor: pointer;
}
.qualification_menu li div{
	width: 50px;
	height: 50px;
	float: left;
	transition: all 0.5s;
}
.qualification_menu li:nth-of-type(1) div{
	background-image: url(../img/qualification_menuicon.png);
	background-repeat: no-repeat;
	background-position: -23px -60px;
}
.qualification_menu li:nth-of-type(2) div{
	background-image: url(../img/qualification_menuicon.png);
	background-repeat: no-repeat;
	background-position: -95px -60px;
}
.qualification_menu li:nth-of-type(3) div{
	background-image: url(../img/qualification_menuicon.png);
	background-repeat: no-repeat;
	background-position: -165px -60px;
}
.qualification_menu li:hover{
	color: #bf1609;
}
.qualification_menu li:hover div{
	background-position-y: -10px;
}
.qualification_menu li.qualification_now{
	color: #bf1609;
}
.qualification_menu li.qualification_now div{
	background-position-y: -10px;
}
/*荣誉资质的分类   end*/
.about_qualification{
	width: 100%;
	overflow: hidden;
}
.about_qualification li{
	margin-bottom: 35px;
	height: auto;
	overflow: hidden;
}
.about_qualification li .qualification_img{
	width:calc(100% - 1px);
	height: 344px;
	z-index: 1;
	border: 1px solid #c4c4c4 !important;
	position: relative;
	cursor: pointer;
	overflow: hidden;
}
.about_qualification li .qualification_img>img{
	width: 100%;
	position: relative;
}
.about_qualification li .qualification_img .qualification_mask{
	width: 100%;
	height: 100%;
	text-align: center;
	position: absolute;
	top: 0;
	left: 0;
	z-index: 10;
	background-color: rgba(0,0,0,0.7);
	overflow: hidden;
	opacity: 0;
	transition: all 0.5s;
}
.qualification_mask .mask_box{
	width: 55px;
	height: 55px;
	background-color: #181878;
	border-radius: 27.5px;
	text-align: center;
	line-height: 55px;
	position: relative;
	top: 50%;
	left: 50%;
	margin:-27.5px 0 0 -27.5px;
	overflow: hidden;
}
.about_qualification li .qualification_img:hover .qualification_mask{
	opacity: 1 ;
}
@media only screen and (max-width:767px ) {
	.qualification_menu{
		width: 285px;
	}
	.qualification_menu li{
		width: 85px;
		height: 45px;
		float: left;
		text-align: center;
		line-height: 20px;
		font-size: 14px;
		margin: 0px 5px;
		cursor: pointer;
		padding-top: 5px;
	}
	.qualification_menu li div{
		width: 45px;
		height: 45px;
		float: left;
		transition: all 0.5s;
		margin-top: -5px;
	}
	.about_qualification li{
		margin-bottom: 15px;
	}
	.about_common{
		padding: 30px 0 20px;
	}
	.about_menu{
		display: none;
	}
	.about_content h1{
		color: #3e3e3e;
		font-size: 24px;
		margin: 0px 0 20px;
	}
	.about_qualification li .qualification_img{
		height: auto;
		overflow: hidden;
	}
	.about_qualification li:nth-of-type(2n+1){
		padding-right: 5px;
		padding-left: 0;
	}
	.about_qualification li:nth-of-type(2n){
		padding-left: 5px;
		padding-right: 0;
	}
}
@media only screen and (min-width:768px ) {
	.about_common{
		padding: 40px 0 25px;
	}
	.about_menu{
		display: none;
	}
	.about_qualification li .qualification_img{
		height: 235px;
	}
	.about_qualification li:nth-of-type(4n+1){
		padding: 0 15px 0 0;
	}
	.about_qualification li:nth-of-type(4n+2){
		padding: 0 10px 0 5px;
	}
	.about_qualification li:nth-of-type(4n+3){
		padding: 0 5px 0 10px;
	}
	.about_qualification li:nth-of-type(4n){
		padding: 0 0 0 15px;
	}
	.about_content h1{
		color: #3e3e3e;
		font-size: 36px;
		margin: 0px 0 30px;
	}
}
@media only screen and (min-width:992px ) {
	.about_common{
		padding: 60px 0 40px;
	}
	.about_qualification li .qualification_img{
		height: 344px;
	}
	.about_menu{
		display: block;
	}
	.about_qualification li:nth-of-type(4n+1){
		padding: 0 30px 0 0;
	}
	.about_qualification li:nth-of-type(4n+2){
		padding: 0 20px 0 10px;
	}
	.about_qualification li:nth-of-type(4n+3){
		padding: 0 10px 0 20px;
	}
	.about_qualification li:nth-of-type(4n){
		padding: 0 0 0 30px;
	}
	.about_content h1{
		color: #3e3e3e;
		font-size: 36px;
		margin: 35px 0 45px;
	}
	.about_qualification li .qualification_img{
		height: 295px;
	}
}
@media only screen and (min-width:1200px ) {
	.about_qualification li:nth-of-type(4n+1){
		padding: 0 45px 0 0;
	}
	.about_qualification li:nth-of-type(4n+2){
		padding: 0 30px 0 15px;
	}
	.about_qualification li:nth-of-type(4n+3){
		padding: 0 15px 0 30px;
	}
	.about_qualification li:nth-of-type(4n){
		padding: 0 0 0 45px;
	}
	.about_qualification li .qualification_img{
		height: 344px;
	}
}