.ab_con{
    width: 100%;
    /* 设置渐变背景色 */
   
}

.xxk{ 
        background: url('../images/gywm.png') no-repeat top center;
        width: 100%;

     
}



.xxk_center{

    width: 74%;
  
    /* height: 500px; */
  
        margin: 0 auto;
        overflow: hidden;
        /* background-color: aqua; */
}


.tab-brief>.hd ul {
    float: left;
}

.tab-brief>.hd li {
    float: left;
    position: relative;
    padding: 0 0 12px;
    font-size: 1.375em;
    color: #666666;
}

.tab-brief>.hd li+li {
    margin-left: 30px;
}

.tab-brief>.hd li a {
    color: #808080;
}

.tab-brief>.hd li:after {
    content: '';
    position: absolute;
    width: 0;
    bottom: -1px;
    left: 0;
    height: 3px;
    background: #C20000;
    transition: all .3s;
    -webkit-transition: all .3s;
    overflow: hidden;
}

.tab-brief>.hd li.on:after {
    width: 2em;
}

.tab-brief>.hd li.on a {
    color: #000;
    font-family: "systb";
}

.tab-brief>.hd .more {
    padding-top: 3px;
    float: right;
}

.tab-brief.space15>.hd li+li {
    margin-left: 15px;
}

.tab-brief>.hd dl {
    float: right;
    font-size: 18px;
    padding-top: 3px;
}

.tab-brief>.hd dl dd {
    float: left;
    position: relative;
}

.tab-brief>.hd dl dd a {
    color: #808080;
}

.tab-brief>.hd dl dd a:hover {
    color: #2354AF;
}

.tab-brief>.hd dl dd+dd {
    padding-left: 10px;
    margin-left: 10px;
}

.tab-brief>.hd dl dd+dd:before {
    content: '';
    width: 1px;
    height: 18px;
    background: #808080;
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    margin: auto 0;
}

.tab-card>.hd {
    line-height: 46px;
    background: #f4f4f4;
}

.tab-card>.hd ul {
    float: left;
}

.tab-card>.hd li {
    float: left;
    position: relative;
    font-size: 1.125em;
}

.tab-card>.hd li a {
    display: block;
    padding: 0 20px;
    text-align: center;
    font-weight: bold;
    white-space: nowrap;
    text-overflow: ellipsis;
    -o-text-overflow: ellipsis;
    overflow: hidden;
    background: #f4f4f4;
}

.tab-card>.hd li.on {
    cursor: pointer;
}

.tab-card>.hd li.on a {
    background: #1e51b1;
    color: #fff;
}

.tab-card>.hd li.on:after {
    width: 100%;
}

.tab-card>.hd .more {
    float: right;
    margin-right: 15px;
}

.tab-card.arrow>.hd {
    font-weight: normal;
}

.tab-card.arrow>.hd li.on:after {
    content: '';
    position: absolute;
    width: 0;
    height: 0;
    left: 50%;
    top: 100%;
    border: transparent solid 8px;
    border-top-color: #0f59a4;
    margin-left: -8px;
}

.com-more a {
    color: #666666;
    font-size: 14px;
}

.com-more a:hover {
    color: #0046a9;
}

.tab-brief .bd>.item .infolist,
.tab-card .bd>.item .infolist {
    margin-top: 10px;
}

.js-tab .more a+a {
    display: none;
}

.js-tab>.bd>*+* {
    display: none;
}

.m-com-more {
    clear: both;
    margin-top: 20px;
    text-align: center;
    line-height: 40px;
    background-color: #f5f5f5;
    border-radius: 5px;
    display: none;
}

.m-com-more a {
    color: #666;
}

.m-com-more a:hover {
    color: #333;
}

.m-com-more.bg-white {
    background: #fff;
}


@media (max-width: 640px) {
    .res.tab-brief>.hd ul li {
        margin: 0 10px 10px 0 !important;
        padding: 0;
        border-bottom: none;
        font-size: 1.125em;
    }

    .res.tab-brief>.hd ul li a {
        display: block;
        padding: 7px 12px !important;
        line-height: 1.5;
        background-color: #f1f1f1;
        color: #666;
    }

    .res.tab-brief>.hd ul li.on a {
        color: #fff;
        background-color: #1a56a8;
    }

    .res.tab-brief>.hd li:after {
        display: none;
    }

    .res.tab-brief .bd>.item>.newsList {
        margin-top: 0;
    }

    .res.tab-card>.hd {
        margin-bottom: -10px;
        background: none;
        border-bottom: #dfdfdf 1px solid;
    }

    .res.tab-card>.hd ul li {
        margin: 0 10px 10px 0 !important;
        font-size: 1.125em;
    }

    .res.tab-card>.hd ul li a {
        padding: 7px 12px !important;
        height: auto;
        line-height: 1.5;
        color: #666;
    }

    .res.tab-card>.hd ul li.on a {
        background: #1a56a8;
        color: #fff;
    }

    .res.tab-card>.bd .item>.newsList {
        margin-top: 0;
    }

    .tab>.hd .more,
    .tab-card>.hd .more,
    .tab-brief>.hd .more {
        display: none;
    }

    .m-com-more {
        display: block;
    }
}

.xxk_bt_img{
    width:18% ;
    height: 428px;
}

.xxk_bt_img img{
    height: 100%;
    width: 100%;
}


.xxk_bt_ul li {
    width: 20%;
    float: left;
}

.xxk_bt_ul li a {
    width: 100%;

}
.xxk_bt_ul li a  img{
    height: 428px;
}

.xxk_con .hd {margin-bottom: 30px;}
.xxk_con .hd ul{margin: 0px -20px;}
.xxk_con .hd ul li a{display: block;margin: 0px 20px;position: relative;}
.xxk_con .hd li.on a::before{
    content: '';
    position: absolute;
    right: 0;
    bottom: -31px;
    left: 0;
    z-index: 2;
    width: 0;
    height: 0;
    margin: 0 auto;
    overflow: hidden;
    border: 13px solid transparent;
    border-bottom-color: #5EA4FF;
}
.xxk_con .hd li.on a::after{
    content: '';
    position: absolute;
    right: 0;
    bottom: -31px;
    left: 0;
    z-index: 3;
    width: 0;
    height: 0;
    margin: 0 auto;
    overflow: hidden;
    border: 11.5px solid transparent;
    border-bottom-color: #fff;
}



.xxk_bt_ul li a{
    display: block;
    margin: 0 auto;
}
.item{
    width: 100%;
    height: 345px;
    background: #fff;
    border: 1px solid #1C7EFF;
    margin-top: 10px;
    box-sizing: border-box;
    box-shadow: -1px 9px 23px 0 rgb(188, 208, 232,.71);
}



.item .item_img {
    float: left;
    width: 25%;
    height: 290px;
     margin: 20px;
    overflow: hidden; 

}

.item_img  a{
    width: 100%;
    height: 100%;
}

.item_img a img{
width: 100%;
    height: 100%;
}

.item_txt {
    font-size: 20px;
    height: 280px;
    overflow-y: auto;
    margin: 20px 0;
    line-height: 41px;
    margin-right: 20px;
    position: relative;
    padding-right: 20px;
text-align: justify;
}
.item_txt::-webkit-scrollbar {width: 2px;}
.item_txt::-webkit-scrollbar-thumb{ border-radius: 8px; background: #3672D9; }
.item_txt::-webkit-scrollbar-track {border-radius: 8px;background: #C3D4E8;}




.sister_cities{
    width: 100%;
}

.sister_cities_tit{
    width: 1440px;
    margin: 0 auto;
    margin-top: 50px;
    margin-bottom: 70px;
}

.sister_cities_con .swiper-slide .pic {
 height: 423px;
 position: relative;
}
.sister_cities_con .swiper-slide img{
    width: 100%;
    height: 100%;
}
.sister_cities_swiper_con_txt{ line-height: 1.5em;color:#808080}

.sister_cities_con .swiper-slide {padding-bottom: 200px;}
.swiper-slide .zg {
    width: 100%;
    height: 54px;
    opacity: 1;
    background: rgba(0, 0, 0, .44);
    position: absolute;
    bottom: 0;
    left: 0;
    color: #fff;
    text-align: left;
    line-height: 52px;
    padding-left: 20px;
    padding-right: 10px;
    box-sizing: border-box;
    font-size: 18px;
    text-align: center;
    display: block;
    display: none;
}
.swiper-slide .zg a{color: #fff;}

.sister_cities_con {margin-bottom: 40px;}
.sister_cities_swiper_con{
  position:absolute ;
  bottom: 40px;
  left: 50%;
  margin-left: -47%;
    width: 94%;
    height:215px ;
    padding: 20px;
    background-color: #fff;
    z-index: 5000;
    display: none;
    box-shadow: 0px 8px 20px 0px rgb(19, 91, 214,.19);
    border-radius: 5px;
    box-sizing: border-box;
}
.swiper-slide.swiper-slide-active .sister_cities_swiper_con{display: block;}
.swiper-slide.swiper-slide-active .zg{display: none;}

.sister_cities_swiper_con_more {
    width: 100px;
    height: 29px;
    border: 1px solid #135BD6;
    text-align: center;
    color: 135BD6;
    font-size: 14px;
    line-height: 29px;
    margin-top: 30px;
    position: absolute;
    left: 20px;
    bottom: 20px;

}
.sister_cities_swiper_con_more a{color:#135BD6}
.sister_cities_swiper_con_more:hover a{color:#fff}
.sister_cities_swiper_con_more:hover{background:#135BD6 ;}
.swiper{
    overflow: visible!important;
}

.sister_cities_con .swiper-btn{background: rgba(97, 97, 97, .35);position: absolute; width: 28px;height: 48px;line-height: 48px;bottom: 20%;z-index: 1;cursor: pointer;}
.sister_cities_con .swiper-btn i{color:#fff;font-size: 30px;}
.sister_cities_con .swiper-btn.prev{left:28%;border-radius: 5px 0px 0px 5px;}
.sister_cities_con .swiper-btn.next{right: 28%;border-radius:  0px 5px 5px 0px;}
.sister_cities_swiper_con_tit{
    font-size: 24px;
    font-weight: bold;
    line-height: 40px;
}

.ychbmySwiper{position: relative;}
/* .ychbmySwiper .swiper-slide{ width: 700px; margin: 0px 20px;} */

/* 单行省略号 */
.elli-s{display: block; white-space:nowrap; text-overflow:ellipsis; -o-text-overflow:ellipsis; overflow:hidden; max-width: 100%;}
/* 多行省略号 */
.elli-m{display: -webkit-box; overflow: hidden; white-space: normal; text-overflow: ellipsis; -webkit-line-clamp: 3; -webkit-box-orient: vertical; 
text-align: justify;font-family: "times new roman";}