.product_introduce{
	position: relative;
}
.product_introduce>ul{
	overflow: hidden;
}
.product_introduce>ul>li{
	text-align: center;
	float: left;
	width: 50%;
	height: 508px;
	cursor: pointer;
}
.product_introduce>ul>li:nth-child(1){
	background:#41abf6 url(../image/business_bg_01.png) no-repeat left top;
}
.product_introduce>ul>li:nth-child(2){
	background:#fff url(../image/business_bg_02.png) no-repeat left top;
}
.product_introduce>ul>li:nth-child(3){
	background:#fff url(../image/business_bg_03.png) no-repeat right bottom;
}
.product_introduce>ul>li:nth-child(4){
	background:#41abf6 url(../image/business_bg_04.png) no-repeat right bottom;
}

.product_introduce>ul>li>.name{
	font-size: 24px;
	padding-bottom: 30px;
}
.product_introduce>ul>li>ul>li{
	font-size: 18px;
	color: #fff;
	padding-bottom: 30px;
}
.product_introduce>ul>li:nth-child(1), .product_introduce>ul>li:nth-child(2){
	padding-top: 188px;
	box-sizing: border-box;
}
.product_introduce>ul>li:nth-child(3), .product_introduce>ul>li:nth-child(4){
	padding-top: 126px;
	box-sizing: border-box;
}


.product_introduce>ul>li:nth-child(1), .product_introduce>ul>li:nth-child(4),
.product_introduce>ul>li:nth-child(1)>ul>li, .product_introduce>ul>li:nth-child(4)>ul>li
{
	color: #fff;
}
.product_introduce>ul>li:nth-child(2), .product_introduce>ul>li:nth-child(3),
.product_introduce>ul>li:nth-child(2)>ul>li, .product_introduce>ul>li:nth-child(3)>ul>li
{
	color: #1d86ed;
}


/*弹出层*/
.product_alert_black{
	position: absolute;
	top: 0px;
	left: 0px;
	background-color: rgba(0,0,0,.5);
	width: 100%;
	height: 100%;
	display: none;
}
.product_alert{
	width: 784px;
	height: 1016px;
	background: #fff url(../image/product_alert_bg.png) no-repeat;
	position: absolute;
	top: 0px;
	left: 50%;
	/*margin-left: -392px;*/
	display:inline;
	/*display: none;*/
}
.product_alert_cont{
	padding: 132px;
	color: #1d86ed;
	text-align: center;
}
.product_alert_cont .title{
	font-size: 24px;
	padding-bottom: 126px;
	display: none;
}
.product_alert_cont ol{
	overflow: hidden;
}
.product_alert_cont ol li{
	float: left;
	font-size: 14px;
	width: 173px;
	margin-bottom: 30px;
}
.product_alert .product_alert_closed{
	position: absolute;
	top: 24px;
	right: 33px;
	font-size: 28px;
    width: 30px;
    height: 30px;
    line-height: 23px;
	text-align: center;
	border: 2px solid #1d86ed;
	border-radius: 100%;
	color: #1d86ed;
	cursor: pointer;
	display: none;
}