*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;}
body{
    font-size: 14px;
    font-family: Tahoma, Geneva, sans-serif; 
    color:#333;}
a{
    text-decoration: none;
    color: #333;}
a:hover{color: #02B2B5;}
.no-liststyle li{list-style-type:none;}
.content-width{
    width: 1200px;
    margin: 0 auto;}
.part-left{float: left;}
.part-right{float: right;}
.onerow-overflow{
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;}
.tworow-overflow{
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
    -webkit-line-clamp: 2;}
.thirdrow-overflow{
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
    -webkit-line-clamp: 3;}


.welcome-box{
    height: 40px;
    line-height: 40px;
    background-color: #0E2D4F;
    color: #FFF;}
.nav-wrap>div{
    height: 110px;}
.nav-wrap-shadow{box-shadow: 0px 4px 16px 0px rgba(0,0,0,0.1);}
.logo-wrap{
    display: flex;
    height: 100%;
    align-items: center;}
.logo-wrap img{
    width: 402px;
    height: 78px;}
.nav-list .first-nav{
    height: 110px;
    line-height: 110px;
    position: relative;}
.nav-list .first-nav{
    padding: 0 28px;
    font-size: 18px;}
.nav-list .first-nav:first-child{padding-left: 0;}
.nav-list .first-nav:last-child{padding-right: 0;}
.nav-list .first-nav a{color: #666;}
.nav-list .first-nav>a:hover,.nav-list .first-nav.nav-active>a{color: #02B2B5;}
.sec-nav-list{
    position: absolute;
    left: 0;
    top: 110px;
    z-index: 99;
    background-image: linear-gradient(to bottom, rgba(2,178,181,1), rgba(255,255,255,0.1));
    padding-bottom: 20px;
    display: none;}
.sec-nav-list .sec-nav a{
    display: block;
    height: 40px;
    line-height: 40px;
    padding: 0 28px;
    color: #FFF;}
.sec-nav-list .sec-nav:hover{background-color: #0E2D4F;}

/* 轮播图 */
.banner-wrap{
    width: 100%;
    height: 570px;
    position: relative;}
.banner-wrap .prev,.banner-wrap .next{
    position: absolute;
    left: 3%;
    top: 50%;
    margin-top: -26px;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background-color: rgba(0,0,0,0.5);
    overflow: hidden;
    display: none;}
.banner-wrap:hover .prev,.banner-wrap:hover .next{display: block;}
.banner-wrap .prev a,.banner-wrap .next a{
    display: block;
    width: 100%;
    height: 100%;
    background: url(slider_arrow.png) -101px 10px no-repeat;
    filter: alpha(opacity=50);
    opacity: 0.5;}
.banner-wrap .next{ 
    left: auto;
    right: 3%;}
.banner-wrap .next a{background-position: 20px 10px;}
.banner-wrap .prev:hover a,.banner-wrap .next:hover a{
    filter: alpha(opacity=100);
    opacity: 1;}
.banner-box,.banner-box .banner-list,.banner-box .banner-list img{
    width: 100%;
    height: 100%;}
.banner-wrap .hd{
    position: absolute;
    left: 0;
    bottom: 15px;
    width: 100%;
    text-align: center;
    z-index: 9;}
.banner-btn{display: inline-block;}
.banner-btn li{
    width: 45px;
    height: 10px;
    border-radius: 10px;
    margin: 0 4px;
    background-color: rgba(255,255,255,.5);
    cursor: pointer;}
.banner-btn li.on{background-color: #FFF;}

.notice-wrap{
    height: 64px;
    background-color: #F6F6F6;}
.notice-box{
    padding: 21px 0;
    overflow: hidden;}
.notice-play{margin-left: 30px;}


.column-top{overflow: hidden;}
.column-top .zh-name{
    font-size: 25px;}
.column-top .eg-name{
    font-size: 18px;
    color: #999;}
.column-top .eg-name i{
    color: #02B2B5;
    font-style: normal;}
.column-top .more-btn{
    width: 74px;
    height: 28px;
    text-align: center;
    line-height: 28px;
    border-radius: 28px;
    border: 1px solid #E5E5E5;
    margin-top: 2px;
    background-color: #FFF;}
.column-top .more-btn a{display: block;}
.column-top .more-btn:hover{border-color: #02B2B5;}

.news-center{
    padding: 40px 0 50px 0;}
.newscenter-wrap{
    padding-top: 30px;
    overflow: hidden;}
.newscenter-box{
    width: 540px;}
.newscenter-list{
    overflow: hidden;
    margin-top: 44px;}
.newscenter-box .newscenter-list:first-child{margin-top: 22px;}
.newscenter-list .newscenter-date{
    width: 84px;
    height: 84px;
    background-color: #F2F2F2;}
.newscenter-date span{
    display: block;
    text-align: center;
    color: #666;}
.newscenter-date .date-days{
    height: 48px;
    line-height: 62px;
    font-size: 25px;}
.newscenter-date .data-month{
    line-height: 20px;}
.newscenter-list .centerlist-right{
    margin-left: 116px;}
.centerlist-right .centerlist-title{font-size: 16px;}
.centerlist-right .centerlist-synopsis{
    color: #999;
    font-size: 13px;
    margin-top: 13px;
    line-height: 22px;}

.newscenter-right{
    height: 382px;
    margin-left: 668px;
    position: relative;}
.newscenter-right .center-img{
    position: absolute;
    width: 446px;
    height: 282px;}
.newscenter-right .first-img{
    right: 84px;
    bottom: 100px;
    z-index: 1;}
.newscenter-right .sec-img{
    right: 42px;
    bottom: 50px;
    z-index: 2;}
.newscenter-right .third-img{
    right: 0;
    bottom: 0;
    z-index: 3;}

/* 最新活动 */
.newest-activity{
    height: 454px;
    background: url(activity_bj.png) no-repeat;
    background-size: 100% 100%;}
.activity-wrap{padding-top: 52px;}
.activity-wrap .column-top .zh-name{color: #FFF;}
.activity-box{
    padding: 30px 0;
    overflow: hidden;}
.activity-list{
    width: 360px;
    margin-left: 60px;}
.activity-list:first-child{margin-left: 0;}
.activity-right{margin-left: 40px;}
.activity-icon{padding-top: 5px;}
.activity-right .activity-title{
    color: #FFF;
    font-size: 20px;}
.activity-right .activity-title:hover{color: #02B2B5;}
.activity-synopsis{
    color: #A5BBDB;
    font-size: 16px;
    padding-top: 10px;
    line-height: 24px;}

/* 今日北语 */
.nowadays-blcu{padding-top: 180px;}
.nowadays-wrap{
    padding: 40px 0 35px 0;
    overflow: hidden;}
.nowadays-box{
    width: 880px;
    overflow: hidden;}
.nowadays-box li{
    float: left;
    width: 280px;
    height: 258px;
    margin-left: 20px;
    overflow: hidden;}
.nowadays-box li.nowadays-first-list{
    width: 580px;}
.nowadays-box li.nowadays-first-list,.nowadays-box li:nth-child(3){margin-left: 0;}
.nowadays-box li:nth-child(-n+2){margin-bottom: 20px;}
.nowadays-box li img,.nowadays-right img{
    width: 100%;
    height: 100%;
    transition: transform 0.8s;}
.nowadays-right{
    float: right;
    width: 300px;
    height: 536px;
    overflow: hidden;}
.nowadays-wrap img:hover{transform: scale(1.1);}

/* 母校记忆 */
.almamater-memory{
    height: 416px;
    padding: 50px 0;
    background-color: #FAFAFA;}
.memory-box{
    padding-top: 40px;
    overflow: hidden;}
.memory-list{
    width: 205px;
    height: 244px;
    margin-left: 43px;
    position: relative;}
.memory-list:first-child{margin-left: 0;}
.memory-list a,.memory-list img{
    display: block;
    width: 100%;
    height: 100%;}
.memory-list .memory-title{
    position: absolute;
    left: 0;
    bottom: -40px;
    width: 100%;
    height: 40px;
    line-height: 40px;
    text-align: center;
    padding: 0 15px;
    font-size: 18px;
    color: #FFF;
    background-color: rgba(61,83,109,0.8);
    transition: bottom 0.5s;}
.memory-list:hover .memory-title{bottom: 0;}

.footer-wrap{
    height: 188px;
    color: #5E95D1;
    background: url(footer_bj.png) no-repeat center;}
.footer-wrap .content-width{
    height: 100%;
    padding-top: 34px;
    overflow: hidden;
    position: relative;}
.friend-link{
    margin-bottom: 12px;
    overflow: hidden;}
.friend-link>span {
    float: left;
    display: block;
    height: 27px;
    line-height: 27px;
    padding-right: 10px;}
.friend-link .link-list{
    padding: 3px 10px;
    border: 1px solid #5E95D1;
    border-radius: 3px;
    margin-right: 15px;}
.friend-link .link-list a{color: #5E95D1;}
.friend-link .link-list:hover{
    border-color: #FFF;
    background-color: #FFF;}
.friend-link .link-list:hover a{color: #02B2B5;} 
.footer-left>p{line-height: 32px;}
.footer-right{
    position: absolute;
    top: 28px;
    right: 0;
    width: 120px;
    height: 120px;}
.footer-right img{
    width: 100%;
    height: 100%;}
.footer-right p{
    padding-top: 5px;
    font-size: 12px;
    text-align: center;
    color: #5E95D1;}



/* 列表页面 */
.list-content .content-width{
    padding: 40px 0;
    overflow: hidden;}
.sideNav-wrap{
    width: 220px;}
.sideNav-title{
    height: 46px;
    line-height: 46px;
    text-align: center;
    font-size: 18px;
    margin-bottom: 10px;
    color: #FFF;
    background-color: #02B2B5;}
.sideNav-list{
    background-color: #FAFAFA;
    position: relative;
    border-top: 1px solid #F4F4F4;}
.sideNav-list li{
    border-left: 2px solid transparent;
    border-bottom: 1px solid #F4F4F4;
    position: relative;}
.sideNav-list li.side-active{
    background-color: #FFF;}
/*.sideNav-list li.side-active a{color: #02B2B5}
.sideNav-list li:hover{
    background-color: #FFF;
}*/
.sideNav-list li a{
    display: block;
    height: 50px;
    line-height: 50px;
    text-align: center;}
.sideNav-list li::before{
    content: "";
    height: 0;
    width: 2px;
    background-color: #02B2B5;
    position: absolute;
    top: 25px;
    left: -2px;
    opacity: 0;
    transition: top 0.3s,height 0.3s,opacity 0.2s;}
.sideNav-list li:hover::before{
    height: 100%;
    top: 0;
    opacity: 1;}

.newslist-content{margin-left: 260px;}
.col-path{
    padding-bottom: 12px;
    border-bottom: 2px solid #02B2B5;}
.newslist-box .newslist-item{
    position: relative;
    width: 100%;
    padding: 24px 0;
    box-sizing: border-box;
    border-bottom: 1px solid #E5E5E5;
    overflow: hidden;}
.newslist-box .newslist-item:last-child{border-bottom: none;}
.newslist-item .newslist-img{
    width: 150px;
    height: 100px;
    float: right;}
.newslist-item .newslist-img a,.newslist-item .newslist-img img{
    display: block;
    width: 100%;
    height: 100%;}
.newslist-item .newslist-left{
    padding: 7px 0;
    margin-right: 180px;
    overflow: hidden;}
.newslist-item .newslist-date{
    float: left;
    width: 86px;
    height: 86px;
    padding: 4px;
    text-align: center;
    background-color: #FFF;
    border: 2px solid #E9E9E9;
    box-sizing: border-box;}
.newslist-item .listdate-box{
    width: 100%;
    height: 100%;
    border: 1px solid #EFEFEF;
    box-sizing: border-box;}
.listdate-box .newslist-days{
    height: 40px;
    line-height: 40px;
    font-size: 23px;
    background-color: #02B2B5;
    color: #FFF;}
.listdate-box .newslist-years{
    padding-top: 7px;
    color: #6E6E70;}
.newslist-item .listitem-center{margin-left: 110px;}
.newslist-item .newslist-title{font-size: 18px;}
.listitem-center .newslist-des{
    margin-top: 16px;
    font-size: 14px;
    color: #999;
    line-height: 22px;
    letter-spacing: 1px;}


/* 详情页 */
.detail-wrap{padding: 30px 0 50px 0;}
.detail-content{padding-top: 30px;}
.article-content .arti_title{
    text-align: center;
    font-size: 24px;}
.article-content .arti_metas{
    text-align: center;
    padding: 15px 0 20px 0;
    color: #999;}
.read-content{
    line-height: 26px;
    font-size: 16px;}
.read-content p{line-height: 26px;}
.read-content img{max-width: 100%;}