/* 轮播 */
.tu { position: relative; overflow: auto; }
.tu li { list-style: none; }
.tu ul li { float: left; }

.tu .arrows {
    display: none;
}

.tu:hover .arrows,
.tu.hover .arrows {
    display: block;
}

@media only screen {
    .tu .arrows {
        -webkit-transition: opacity 0.4s;
        transition: opacity 0.4s;
        opacity: 0;
        display: block;
    }
    
    .tu:hover .arrows,
    .tu.hover .arrows {
        opacity: 1;
    }
}

.tu .arrows {
    position: absolute;
    z-index: 20;
}

.tu .arrows .prev,
.tu .arrows .next {
    position: absolute;
    width: 76px;
    height: 77px;
    font: 0/0 a;
    color: transparent;
    cursor: pointer;
}

.tu .arrows .prev {
    left: 30px;
    background: url(img/slide_arrow_left.png) no-repeat;
}

.tu .arrows .next {
    left: 900px;
    background: url(img/slide_arrow_right.png) no-repeat;
}

.wrapper {
    position: relative;
    width: 100%;
	max-width:900px;
    margin: 0 auto;
    zoom: 1;
	overflow:hidden;
}

.section4 {
    height: 400px;
}

.section4 .tu ul li {
    height: 400px;
}

.section4 .tu img:hover {

}
.section4 .tu img{text-align:center; transition:460ms}
.section4 .tu:hover img{ transform:scale(1.05); -webkit-transform:scale(1.05); -moz-transform:scale(1.05);}

.section4 .tu .arrows {
    top: 270px;
}

.section4 .dots {
    position: absolute;
    width: 100%;
    height: 137px;
    top: 263px;
    text-align: center;
    font-size: 15px;
    background: #fff;
}

.section4 .dot {
    float: left;
    width: 33.33%;
	height:137px;
    cursor: pointer;	
}

.section4 .dot  H2{
    font-size:30px;
	color:#fff;
	line-height:60px;
	margin-top:30px;
	font-family:Arial!important;
	font-weight:bold;
}
.section4 .dot  H5{
    font-size:14px;
	color:#fff;
	line-height:16px;
	font-family:"微软雅黑";
}


.section4 .dot1 {
    color: #fff;
    background: #3f3f3f;
}

.section4 .dot1.active {
    background: #0168b7;
	position:relative
}
.section4 .dot1.active:before{
	width: 0;
    height: 0;
    border-left: 20px solid transparent;
    border-right: 20px solid transparent;
    border-bottom: 20px solid #0168b7;
	content:"";
	display:block;
	margin:-20px auto 0px auto;
	}

.section4 .dot2 {
    color: #fff;
    background: #231815;
}

.section4 .dot2.active {
    background: #0168b7;
}

.section4 .dot2.active:before{
	width: 0;
    height: 0;
    border-left: 20px solid transparent;
    border-right: 20px solid transparent;
    border-bottom: 20px solid #0168b7;
	content:"";
	display:block;
	margin:-20px auto 0px auto;
	}
	
.section4 .dot3 {
    color: #fff;
    background: #140d0b;
}

.section4 .dot3.active {
    background: #0168b7;
}

.section4 .dot3.active:before{
	width: 0;
    height: 0;
    border-left: 20px solid transparent;
    border-right: 20px solid transparent;
    border-bottom: 20px solid #0168b7;
	content:"";
	display:block;
	margin:-20px auto 0px auto;
	}