.footer{
    background: #e9eef9;
}
.header{
    background: linear-gradient(90deg,#def1fe,#f1f1f8);
}
.bodyer-main{
    padding: 30px 0 120px 0;
}
.aboutus-container{
    display: flex;
}
.aboutus-left{
    width: 187px;
    margin-right: 50px;
}
.aboutus-right{
    flex: 1;
}
.aboutus-nav{
    font-size: 24px;
    color: #666;
    text-align: center;
    line-height: 84px;
    position: sticky;
    left: 0;
    top: 105px;
}
.aboutus-nav-item{
    background: #def1fe;
    cursor: pointer;
}
.aboutus-nav-item.on{
    background: #689cd2;
    color: #fff;
}
.aboutus-content-item{
    margin-bottom: 60px;
}
.aboutus-title{
    padding-bottom: 16px;
    margin-bottom: 20px;
    color: #689cd2;
    font-size: 30px;
    font-weight: 700;
    border-bottom: 1px solid #999999;
}
.aboutus-desc{
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 50px;
    font-size: 16px;
    color: #666;
}
.aboutus-content p{
    margin-bottom: 10px;
    font-size: 18px;
    color: #666;
    line-height: 1.5;
    text-align: justify;
}
.aboutus-content img{
    width: 100%;
}
.news-list{
    margin-top: 40px;
}
.news-item{
    display: flex;
    margin-bottom: 30px;
    align-items: center;
    justify-content: space-between;
    color: #689cd2;
    font-size: 18px;
    cursor: pointer;
}