.b1nav{position: absolute;overflow: hidden;left: 50%;bottom: 4%;margin-left: -25px;}
.b1nav li{float: left;width: 16px;height: 16px;background: url(/images/art1.png);margin-left: 3px;}
.b1nav  .on{background: url(/images/art2.png);}



.main{width: 100%;}
.ma1{width: 1000px;height:315px;margin:0 auto;overflow: hidden;}
.ma1 li{width: 333px;float: left;}
.ma1 li img{margin:65px auto 15px;}
.ma1 li h2{margin:0px auto 15px;text-align: center;font-size: 22px;font-weight: normal;color: #363636;}
.ma1 li p{width: 300px;margin: 0 auto;text-align: center;color: #a3a3a3;}
.ma2{height: 644px;background: url(/images/sy1.jpg) no-repeat center;}
.m2{width: 1330px;margin: 0 auto;padding-top: 210px;height: 430px;overflow: hidden;}



.ma3{width: 1000px;height:583px;margin:0 auto;overflow: hidden;}
.m3a{width: 490px;height: 385px;float: left;margin-top: 100px;border:solid 1px #eee;}
.m3a:hover{border-color: #179fab;}

.m3a h3{font-weight: normal;font-size: 16px;margin:27px 0 15px 20px;color: #333;}
.m3a p{width: 440px;margin-left: 20px;}

.m3b{width: 490px;height: 384px;float: right;margin-top: 100px;}
.m3b li{border:solid 1px #eee;height: 86px;margin-top: 10px;padding: 17px;}
.m3b li:hover{border-color: #179fab;}
.m3b li dd{float: left;}
.m3d2{width: 333px;}
.m3d2 h3{font-weight: normal;font-size: 16px;margin:0px 0 10px 18px;color: #333;}
.m3d2 p{width:330px;margin-left: 18px;line-height: 19px;}
.ma4{width: 100%;height:679px;overflow: hidden;background: url(/images/atr_26.jpg) no-repeat center;}
.m4a{width: 1000px;height:679px;margin:0 auto;overflow: hidden;}
.m4a_1{width: 290px;height: 391px;background: url(/images/atrm4.png) no-repeat center left;margin: 230px 0 0 620px;}
.m4a_1 ul li{color: #fff;font-size: 17px;text-align: right;height: 20px;padding-right: 30px;margin-top: 22px;}

.ma5{width: 1000px;height:560px;margin:0 auto;overflow: hidden;}
.m5a img{margin: 50px auto 70px;}
.m5b li{float: left;}
.m5b .m5b_2{
	height: 200px;
	width: 320px;
	margin:25px 0 0 40px;
	padding-left: 35px;
	background-image: url(/images/atr_37.png);
	background-repeat: no-repeat;
	background-position: left 5px;
}
.m5b .m5b_2 p{margin-top: 9px;}
.m5b .m5b_2 p span{font-size: 22px;}