@charset "utf-8";
body{
	background: #e9edf1;
}
.id_str{
	top: -120px;
	position: absolute;
}
.industry1_box{
	width: 100%;
	margin-top: 100px;
	margin-bottom: 140px;
}
.industry1_nav{
	height: 468px;
	margin-bottom: 20px;
	overflow: hidden;
	position: relative;
}
.industry1_nav:last-child{
	margin-bottom: 0;
}
.industry1_nav:nth-child(2n){
	height: 252px;
}
.industry1_nav .industry1_left{
	background-repeat: no-repeat;
	background-size: cover;
	background-position: left top;
	width: 29%;
}
.industry1_nav .industry1_right{
	background-repeat: no-repeat;
	background-size: cover;
	background-position: left top;
	width: 71%;
}
.industry1_nav .industry1_img{
	float: left;
	height: 185px;
	background: #fff;
	position: relative;
	width: calc((100% - 115px) / 4);
	margin-right: 20px;
  	box-shadow: 0px 10px 15px 0px rgba(170, 170, 170, 0.35);
  	margin-top: 30px;
  	overflow: hidden;
}
.industry1_nav .industry1_img .img{
	width: 100%;
}
.industry1_nav .industry1_img:nth-child(4n - 3){
	margin-left: 25px;
}
.industry1_nav .industry1_img:nth-child(4n){
	margin-right: 0;
}
.industry1_nav .industry1_img .industry1_title{
	position: absolute;
	bottom: 12px;
	left: 0;
	width: 100%;
	text-align: center;
	z-index: 10;
	font-size: 14px;
	line-height: 24px;
}
.industry1_nav .industry1_left .txt{
	color:#fff;
	font-size: 28px;
	font-weight: bold;
}

/*响应式适配*/

@media screen and (max-width: 1861px) {
	
}
@media screen and (max-width: 1681px) {
	
}
@media screen and (max-width: 1450px) {
	
}
@media screen and (max-width: 1335px) {
	
}
@media screen and (max-width: 1200px) {
	
}
@media screen and (max-width: 1100px) {

}
@media screen and (max-width: 1000px) {

}
@media screen and (max-width: 768px) {
	.id_str{
		top: -70px;
	}
	.industry1_box {
	    width: 100%;
	    margin-top: 30px;
	    margin-bottom: 50px;
	}
	.industry1_nav{
		display: block;
		height: auto;
	}
	.industry1_nav .industry1_left{
		width: 100%;
		height: 300px;
	}
	.industry1_nav .industry1_right{
		width: 100%;
	}
	.industry1_nav .industry1_left .txt{
		font-size: 20px;
	}
	.industry1_nav .industry1_img:nth-child(4n - 3) {
	    margin-left: 0;
	}
	.industry1_nav .industry1_img {
	    height: 140px;
	    width: calc((100% - 10px) / 2);
	    margin-right: 10px;
	    margin-top: 10px;
	}
	.industry1_nav .industry1_img:nth-child(2n) {
	    margin-right: 0;
	}
	.industry1_nav:nth-child(2n){
		height: auto;
	}
	.industry1_nav:nth-child(2n) .industry1_left {
	    height: 150px;
	}
}
@media screen and (max-width: 414px) {
	
}