@charset "utf-8";
.lt_bn {position:relative;overflow:hidden}
.lt_bn .bx-wrapper{height:800px;}
.lt_bn li{background-position:center center !important;background-size:cover;background-repeat:no-repeat;height:800px;text-align:center;color:#fff}
.lt_bn .bg{;position:absolute;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,00);content:'';z-index:1;overflow:hidden}

.lt_bn .bn_txt{display:block; padding-top: 220px; height:100%;width:100%;position:relative;z-index:2;}

.lt_bn .txt_wr{max-width: 1400px; margin: 0 auto; text-align: left}

.lt_bn li .bn_tit{
-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:#ff6d00;color:#fff;padding:10px 55px;line-height:45px;margin-top:20px; font-size: 2em; font-weight: 800; border-radius: 50px }
.lt_bn li .bn_view a{color: #fff}
.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{font-size:88px; font-weight:800;  margin-top:30px; 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_detail{font-size:25px; font-weight:700; letter-spacing:0; 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_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;right:20px;z-index:99; text-align:center;}
.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{display:none; 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}

 @media (max-width: 969px){
    .lt_bn .bx-wrapper ,.lt_bn li{height: 550px}
    .lt_bn .bx-controls-direction a{width:30px;height:30px }
     .lt_bn .bn_txt{padding: 140px 20px 0}
    .lt_bn li .bn_detail {font-size:24px;}
	.lt_bn li .bn_tit{font-size:74px}
    .lt_bn .btn_bottom{display:none}
    .lt_bn #bx_pager{width:100%;text-align:center;right:0}
    .lt_bn li .bn_view {padding:6px 45px;line-height:45px;margin-top:20px; font-size: 1.6em;  }
 }

  @media (max-width: 639px){
	.lt_bn .bx-wrapper, .lt_bn li{height:320px; background-position: 60%!important}
      .lt_bn .bn_txt{padding: 65px 20px 0}
    .lt_bn li .bn_detail {font-size:15px;margin:  10px 0;}
	.lt_bn li .bn_tit{font-size:32px; line-height:50px; margin-top:30px;}
	.lt_bn #bx_pager a{font-size:13px;}
      
      .lt_bn li .bn_view {padding:0px 25px;line-height:40px;margin-top:10px; font-size: 1.1em;  }
 }