@charset "utf-8";

.lt_bn {
	position:relative;
	overflow:hidden;
	margin-top: 80px;
}

.lt_bn .bx-wrapper{
	height:650px;
}

.lt_bn li{
	background-position:center;
	background-size:cover;
	background-repeat:no-repeat;
	height:650px;
	text-align:center;
	color:#fff;
}

.lt_bn .bn_txt{
	display:table;
	height:100%;
	width:100%;
	position:relative;
	z-index:2;
}

.lt_bn .txt_wr{
	display:table-cell;
	vertical-align:middle;
	padding:0 20%;
}

.lt_bn li .bn_tit{
	font-size:3.8em;
	font-weight:bold;
	line-height:1.53em;
	-webkit-text-shadow:2px 2px 5px rgba(55,55,55,0.4);
	-moz-text-shadow:2px 2px 5px rgba(55,55,55,0.4);
	text-shadow: 2px 2px 5px rgba(55,55,55,0.4);
}

.lt_bn li .bn_detail{
	font-size:1.231em;
	margin:20px 0 20px;
	line-height:1.7em;
	-webkit-text-shadow:2px 2px 5px rgba(55,55,55,0.4);
	-moz-text-shadow:2px 2px 5px rgba(55,55,55,0.4);
	text-shadow: 2px 2px 5px rgba(55,55,55,0.4);
}

.lt_bn li .bn_view {
	display:inline-block;
	background:#fff;
	color:#333;
	padding:0 35px;
	line-height:45px;
	margin-top:20px;
}

.lt_bn .bn_link{
	display:none;
	position:absolute;
	bottom:10px;
	right:10px;
	z-index:99;
	background:#ff0000;
	color:#fff;
	width:40px;
	line-height:40px;
	border-radius:30px;
	text-align:center;
	font-size:16px;
}

.lt_bn:hover .bn_link{
	display:block;
}

.lt_bn .bn_link:hover {
	transform: rotate( -45deg );
	color:#fff;
}

.lt_bn .bx-pager{
	position:absolute;
	bottom:0;
	right:0;
}

.lt_bn li .bn_tit{
	opacity:0;
	transform:translateY(30px);
	-webkit-transition: all 0.3s ease-in .3s;
	-moz-transition:  all 0.3s ease-in .3s;
	-ms-transition: all 0.3s ease-in .3s;
	-o-transition: all 0.3s ease-in .3s;
	transition: all 0.3s ease-in .3s;
}

.lt_bn li .active-slide .bn_tit{
	opacity:1;
	transform:translateY(0);
}

.lt_bn li .bn_detail{
	opacity:0;
	-webkit-transition: all 1s ease-in .5s;
	-moz-transition:  all 1s ease-in .5s;
	-ms-transition:  all 1s ease-in .5s;
	-o-transition: all 1s ease-in .5s;
	transition: all 1s ease-in .5s;
}

.lt_bn li .active-slide .bn_detail{
	opacity:1;
}

.lt_bn li .bn_view{
	opacity:0;
	-webkit-transition: all 1.3s ease-in 1s;
	-moz-transition: all 1.3s ease-in 1s;
	-ms-transition: all 1.3s ease-in 1s;
	-o-transition: all 1.3s ease-in 1s;
	transition: all 1.3s ease-in 1s;
}

.lt_bn li .active-slide .bn_view{
	opacity:1;
}

.lt_bn #bx_pager{
	position:absolute;
	bottom:20px;
	left:20px;
	z-index:99;
}

.lt_bn #bx_pager a{
	color:#fff;
	display:inline-block;
	padding:5px;
	line-height:20px;
	opacity:0.5;
}

.lt_bn #bx_pager span{
	display:inline-block;
	width:0;
	height:1px;
	background:#fff;
	vertical-align:top;
	margin-top:10px;
	margin-left:8px;
	-webkit-transition: all 0.3s ease-in;
	-moz-transition:  all 0.3s ease-in ;
	-ms-transition: all 0.3s ease-in ;
	-o-transition: all 0.3s ease-in ;
	transition: all 0.3s ease-in;
}

.lt_bn #bx_pager .active{
	opacity:1;
}

.lt_bn #bx_pager .active span{
	width:20px;
}

.lt_bn .btn_bottom{
	position:absolute;
	bottom:0;
	left:50%;
	width:81px;
	height:37px;
	background:url('./btn_bottom.png');
	border:0;
	margin-left:-40px;
	text-indent:-999px;
	overflow:hidden;
}

.bx-viewport li{
	background-position: center center !important;
}

@media (max-width: 1600px){
	.lt_bn .bx-wrapper ,.lt_bn li{
		height:500px;
	}
}
@media (max-width: 969px){
	.lt_bn .bx-wrapper ,.lt_bn li{
		height:400px;
	}
    .lt_bn .bx-controls-direction a{
	    width:30px;
	    height:30px;
    }
    .lt_bn .txt_wr{
	    padding:0 40px;
    }
    .lt_bn li .bn_tit{
	    font-size:2em;
    }
    .lt_bn .btn_bottom{
	    display:none;
    }
    .lt_bn #bx_pager{
	    width:100%;
	    text-align:center;
	    right:0;
		left:0;
    }
	.bx-viewport li{
		background-position: center center !important;
	}
}

.bx-viewport{
	z-index: -1;
}