*{padding: 0;margin: 0;}
img{display: block;}
a{text-decoration: none;}
li{list-style: none;}
strong{font-weight: 500;}
.container{
	width: 1200px;
	margin: 0 auto;
}
.banner_box{
	width: 100%;
	height: 468px;
	/*background: url(../images/chain/service_banner.png) no-repeat center center;*/
	background-size: cover;
	background-size: 100%
}
.banner_box div{
	position: absolute;
	z-index: 0;
	top: 0;
	left: 0;
	width: 100%;
	height: 468px;
	background: rgba(0,16,47,.4);
}
.banner_box strong{
	font-size: 32px;
	line-height: 32px;
	color: #FFFFFF;
	display: block;
	padding: 200px 0 60px 0;
	text-align: center;
	position: relative;
	z-index: 1;
}
.banner_box a{
	width: 165px;
	height: 44px;
	line-height: 44px;
	background: #1869FF;
	border-radius: 5px;
	margin: 0 auto;
	font-size: 18px;
	color: #FFFFFF;
	text-align: center;
	margin: 0 auto;
	display: block;
	position: relative;
	z-index: 1;
	cursor: pointer;
}
.meg_title strong{
	font-size: 32px;
	color: #212121;
	line-height: 32px;
	display: block;
	text-align: center;
	padding-bottom: 12px;
}
.meg_title div{
	width: 359px;
	height: 1px;
	background: #1A1A1A;
	margin: 0 auto;
	position: relative;
]}
.meg_title div i{
	display: block;
	width: 40px;
	height: 4px;
	background: #1869FF;
	position: absolute;
	top: -1px;
	left: 0;
	right: 0;
	margin: auto;
}

.challenge_box_sub{
    background: #e5e5e5;
    min-height: 40px;
    padding: 20px;
    border-radius: 5px;
    line-height: 40px;
}

.challenge_box ul{
	display: flex;
}
.challenge_box ul li:nth-child(2){
	margin: 0 110px;
}
.challenge_box ul li b{
	font-size: 24px;
	line-height: 24px;
	font-weight: 500;
	color: #212121;
}
.challenge_box ul li i{
	display: block;
	width: 288px;
	height: 1px;
	background: #B3B3B3;
	margin: 23px 0 20px 0;
}
.challenge_box ul li p{
	font-size: 20px;
	color: #666666;
	line-height: 36px;
}

.fission_box ul{
	display: flex;
}
.fission_box ul li{
	flex: 1;
}
.fission_box ul li div{
	width: 100px;
	height: 100px;
	background: #1869FF;
	border-radius: 20px;
	position: relative;
	margin: 0 auto;
	margin-bottom: 90px;
}
.fission_box ul li div img{
	vertical-align: middle;
	position: absolute;
	top: 0;
	bottom: 0;
	left: 0;
	right: 0;
	margin: auto;
}
.fission_box ul li p{
	font-size: 20px;
	line-height: 32px;
	color: #212121;
	max-width: 250px;
	margin: 0 auto;
}

.integrated_box{
	width: 100%;
	height: 550px;
	background: url(https://www.bihain-gs.com/static/home/web1/images/chain/service_img_bg.png) no-repeat center center;
	background-size: cover;
	margin-top: 135px;
}
.integrated_box .meg_title strong{
	color: #FFFFFF;
}
.integrated_box .meg_title div{
	background: #FFFFFF;
}
.integrated_box .meg_title div i{
	background: #FFFFFF;
}

.integrated_main ul{
	overflow: hidden;
}
.integrated_main ul li{
	width: 462px;
	float: left;
	display: flex;
	padding-bottom: 83px;
}
.integrated_main ul li div{
	width: 82px;
	height: 82px;
	background: #FFFFFF;
	border-radius: 50%;
	position: relative;
}
.integrated_main ul li div img{
	vertical-align: middle;
	position: absolute;
	top: 0;
	bottom: 0;
	left: 0;
	right: 0;
	margin: auto;
}
.integrated_main ul li p{
	max-width: 367px;
	font-size: 20px;
	color: #FFFFFF;
	padding: 14px 0 0 14px;
}
.operate_box{
	margin-bottom: 160px;
}
.operate_box ul{
	display: flex;
}
.operate_box ul li{
		width: 259px;
		height: 266px;
		border-radius: 0px 0px 20px 20px;
		position: relative;
		overflow: hidden;
		display: block;
}
.operate_box ul li img{
	width: 100%;
}
.operate_box ul li div{
	width: 258px;
	height: 81px;
	background: #1869FF;
	position: absolute;
	bottom: 0;
	left: 0;
}
.operate_box ul li div p{
	font-size: 16px;
	color: #FFFFFF;
	padding: 18px 16px;
}
.operate_box ul li:nth-child(2){
	margin: 0 55px 0 55px;
}
.operate_box ul li:nth-child(3){
	margin: 0 55px 0 0;
}

@media screen and (max-width: 750px) {
    .container{
        width: unset;
        padding:0 30px;
    }
    .banner_box{
        height: 300px;
        background-size: auto;
    }
    .banner_box div{
        height: 100%;
    }
    .banner_box strong{
        padding: 140px 0 30px 0;
    }
}