:root{
    --us-p-bg:url('https://betar.oss-cn-beijing.aliyuncs.com/BetaSites/static/images/us/us-p-bg.png');
    --us-timeline-bg:url('https://betar.oss-cn-beijing.aliyuncs.com/BetaSites/static/images/us/us-timeline-bg.png');
    --us-timeline-hd:url('https://betar.oss-cn-beijing.aliyuncs.com/BetaSites/static/images/us/us-timeline-hd.png');
}
.us-content-main{
    background-color: #FAFAFA;
    position: relative;
}
.us-bg{
    position: absolute;
    z-index: 10;
    left: 0;
    top: 0;
    width: 100%;
}
.us-p-bg{
    background-image: var(--us-p-bg);
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
    min-height: 800px;
}
.us-main{
    border-radius: 5px;
    border: 1px solid rgba(0, 0, 0, 0.055);
    box-shadow: 0 0 8px rgba(204, 204, 204, 0.5);
    background-color: rgba(255, 255, 255, 0.84);
}
.us-content{
    padding: 0 50px 50px;
}
.us-content h1{
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 20px;
}
.us-content h3{
    font-size: 14px;
    line-height: 24px;
    font-weight: bold;
}
.us-content p{
    font-size: 14px;
    color: #666666;
    line-height: 24px;
    margin-bottom: 40px;
}
.us-photos-main{
    background-color: #FAFAFA;
    padding: 80px 0;
}

.us-timeline-main{
    position: relative;
    background-color: #f8f8f8;
    padding-bottom: 50px;
}
.us-timeline-bg{
    background-image: var(--us-timeline-bg);
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    min-height: 650px;
}
.us-timeline-hd{
    background-image: var(--us-timeline-hd);
    background-repeat: no-repeat;
    background-position: center;
    background-size: 100% auto;
}
.us-timeline-line{
    height: 2px;
    background-image: linear-gradient(to right, rgba(255,255,255,1),rgba(255,255,255,0))!important;
}
.us-p-timeline{
    background-image: url(../images/us/us-p-time.png);
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
    min-height: 800px;
}

.us-timeline-content{
    position: relative;
    z-index: 10;
}

.us-cert-main{
    padding: 20px 0;
    margin-bottom: 50px;
}

.portfolio{
    overflow: hidden; 
    opacity: 1;
}
.portfolio-wrapper{
    overflow: hidden;
    position: relative;
    background-color: rgba(102, 102, 102, 0.021);
    cursor: pointer;
}
.portfolio img{
    max-width: 100%;
    position: relative;
    top:0px;
    transition: all 0.5s;
}
.portfolio .label{
    position: absolute;
    width: 100%;
    min-height: 40px;
    left: 0;
    bottom: -80px;
    transition: all 0.5s;
}
.portfolio-wrapper:hover img{
    top:-30px
}
.portfolio-wrapper:hover .label{
    bottom: 0px;
}
.portfolio .label-text{
    color: #fff;
    position: relative;
    z-index: 100;
    padding: 5px 8px;
}
.portfolio .text-title{
    color: #fff;
    line-height: 30px;
    font-size: 14px;
}
.portfolio .text-category{
    display: block;
    font-size: 12px;
    color: #fff;
}
.portfolio .label-bg{
    background-color: var(--theme-blue);
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}
.portfolio-wrapper{
    border: 1px solid #dcdcdc;
}
/* 标签切换样式 */
.tabs-content{
    clear: both;
    overflow: hidden;
    border-bottom: 1px solid var(--theme-blue);
}
.nav-tabs {
    border: none;
}
.nav-tabs > li {
    margin-bottom: -2px;
}
.nav-tabs > li > a {
    padding: 10px 25px;
    border: none;
}
.nav > li > a:hover,
.nav > li > a:focus {
  background-color: transparent;
  color: var(--theme-blue);
  border:none
}
.nav-tabs > li.active > a{
    background-color: var(--theme-blue)!important;
    border: none!important;
    color: #fff!important;
}
.nav-tabs > li.active > a:hover,
.nav-tabs > li.active > a:focus{
    background-color: transparent;
    border: none;
}
.tabs_parent li.active{
    border-bottom-color: #3197e9;
}

@media screen and (min-width:768px) {
    .us-content{
        padding: 0 100px 50px;
    }
    .us-content h1{
        font-size: 28px;
    }
    .portfolio-wrapper{
        border: 0px solid #dcdcdc;
    }
}
@media screen and (min-width:992px) {
    .us-timeline-title{
        font-size: 24px;
        min-height:200px;
    }
    .us-content{
       padding: 0 158px 95px;
    }
    .us-content h1{
        font-size: 30px;
        line-height: 40px;
        margin-bottom: 40px;
    }
    .us-content h3{
        margin-top: 60px;
    }
    .us-timeline-bg{
        min-height: 700px;
    }
}