@charset "utf-8";

.lt_bn {position:relative;overflow:hidden}
.lt_bn .bx-wrapper{height:auto;}
.lt_bn li {background-position:center center !important;background-size:cover;background-repeat:no-repeat; height:700px;color:#fff}
.lt_bn .bg{;position:absolute;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0);content:'';z-index:1;overflow:hidden}

.lt_bn .bn_txt {display:table;height:100%;width:100%;max-width:1400px; margin:0 auto; padding:0 20px; text-align:left; position:relative;z-index:2;}
.lt_bn .txt_wr {padding-top:120px;text-align: center;}


.lt_bn li .bn_bt {display: inline-block; margin-top: 50px;font-size:24px; font-weight:500;  word-break:keep-all; opacity:0; background: var(--sub-color); color: #fff; border-radius: 50px; padding: 10px 30px;
-webkit-transition: all 1s ease-in .7s;
-moz-transition:  all 1s ease-in .7s ;
-ms-transition:  all 1s ease-in .7s;
-o-transition: all 1s ease-in .7s;
transition: all 1s ease-in .7s}

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

.lt_bn li .bn_tit {font-size:50px; word-break:keep-all; opacity:0;margin: 00px auto 50px; line-height: 80px;
-webkit-transition: all 1s ease-in .3s;
-moz-transition:  all 1s ease-in .3s ;
-ms-transition:  all 1s ease-in .3s;
-o-transition: all 1s ease-in .3s;
transition: all 1s ease-in .3s}

.lt_bn li .bn_tit span{font-size: 72px;}
.lt_bn li .bn_tit b{color: var(--sub-color);}

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

.lt_bn li .bn_detail{  font-size:30px; line-height:34px; word-break:keep-all; font-weight:300;; opacity:0;
-webkit-transition: all 0.5s ease-in .5s;
-moz-transition:  all 0.5s ease-in .5s;
-ms-transition: all 0.5s ease-in .5s;
-o-transition: all 0.5s ease-in .5s;
transition: all 0.5s ease-in .5s}

.lt_bn li .active-slide .bn_detail {opacity:0.7}


.lt_bn #bx_pager {position:absolute; bottom:60px;z-index:99; width:100%; text-align:center;}
.lt_bn #bx_pager .pager_wrap {width:100%; max-width:1200px; margin:0 auto;}
.lt_bn #bx_pager .pager_wrap a {color:#fff;display:inline-block;padding:5px;line-height:20px;opacity:0.5; font-size:16px;}
.lt_bn #bx_pager .pager_wrap  span{display:inline-block;width:0;height:1px;background:#fff;vertical-align:top;margin-top:10px;margin-left:8px;
-webkit-transition: all 0.5s ease-in;
-moz-transition:  all 0.5s ease-in ;
-ms-transition: all 0.5s ease-in ;
-o-transition: all 0.5s ease-in ;
transition: all 0.5s ease-in }
.lt_bn #bx_pager .pager_wrap .active{opacity:1}
.lt_bn #bx_pager .pager_wrap .active span{width:20px}


 @media (max-width: 969px){
	.lt_bn .bx-wrapper, .lt_bn li {height:500px;}
	
	.lt_bn .txt_wr {padding-top:100px;}
    .lt_bn li .bn_bt { margin-top: 30px;font-size:20px;padding: 8px 15px;}
	.lt_bn li .bn_tit {font-size:46px;margin: 00px auto 20px; line-height: 60px; }
	.lt_bn li .bn_tit span{font-size: 52px;}
    .lt_bn li .bn_detail {font-size:22px; line-height:30px;}
	
    .lt_bn #bx_pager {bottom:60px;}
	.lt_bn #bx_pager .pager_wrap a {font-size:14px;}
 }

  @media (max-width: 639px){
	.lt_bn .bx-wrapper, .lt_bn li{height:400px;}
	
	.lt_bn .txt_wr {padding-top:80px;}
    .lt_bn li .bn_bt { margin-top: 20px;font-size:18px;padding: 8px 15px;}
	.lt_bn li .bn_tit {font-size:28px;line-height: 40px;  }
	.lt_bn li .bn_tit span{font-size: 36px;}
    .lt_bn li .bn_detail {font-size:18px; line-height:20px;}
	
    .lt_bn #bx_pager {bottom:15px; left:0;}
	.lt_bn #bx_pager .pager_wrap {padding:0 20px;}
	.lt_bn #bx_pager .pager_wrap a {font-size:12px;}
 }

   @media (max-width: 399px){
	.lt_bn .bx-wrapper, .lt_bn li{height:400px;}
	
	.lt_bn .txt_wr {padding-top:80px;}
    .lt_bn li .bn_bt { margin-top: 20px;font-size:16px;padding: 6px 15px;}
	.lt_bn li .bn_tit {font-size:22px;line-height: 30px;  }
	.lt_bn li .bn_tit span{font-size: 30px;}
    .lt_bn li .bn_detail {font-size:16px; line-height:20px;}
	
    .lt_bn #bx_pager {bottom:15px; left:0;}
	.lt_bn #bx_pager .pager_wrap {padding:0 20px;}
	.lt_bn #bx_pager .pager_wrap a {font-size:12px;}
 }