body {
    margin: 0 auto;
    background-color: #ffffff;
    font-family: "PingFang SC", Helvetica, Arial, "Hiragino Sans GB", "Microsoft Yahei";
}

.nav {
    margin-bottom: 100px;
}

.nav .nav-center {
    width: 1100px;
    margin: 0 auto;
}

.nav .nav-center .nav-listing {
    padding-top: 30px;
    width: 230px;
}

.nav .nav-center .nav-listing .jiazai {
    height: 44px;
    line-height: 44px;
    text-align: center;
    background-image: linear-gradient(0deg, #2de6d5 0%, #14c9ab 100%);
}

.nav .nav-center .nav-listing .jiazai span {
    font-family: PingFangSC-Medium;
    font-size: 16px;
    line-height: 22px;
    height: 22px;
    color: #FFFFFF;
    letter-spacing: 0;
}

.nav .nav-center .nav-listing ul {
    background-image: linear-gradient(-176deg, #ffffff 0%, #f2f2f2 100%);
}

.nav .nav-center .nav-listing ul li {
    width: 230px;
    height: 46px;
    line-height: 46px;
    text-align: center;
}

.nav .nav-center .nav-listing ul li img {
    float: left;
    margin-top: 17px;
    margin-left: 20px;
    width: 5px;
    height: 12px;
}

.nav .nav-center .nav-listing ul li span {
    height: 22px;
    line-height: 22px;
    font-family: PingFangSC-Regular;
    font-size: 16px;
    color: #AAAAAA;
}

.nav .nav-center .nav-listing ul li span:hover {
    color: #000;
}

.nav .nav-center .nav-listing ul li span:active {
    color: #000;
}

.nav .nav-center .nav-listing ul li span:visited {
    color: #000;
}

.nav .nav-center .nav-listing ul li a span.active {
    color: #000;
}

.nav .nav-center .nav-listing ul li .key2 {
    width: 200px;
    height: 1px;
    margin-left: 15px;
    background: #E5E5E5;
    margin-top: -2px;
}

.nav .nav-center .nav-listing .contact {
    padding-top: 20px;
}

.nav .nav-center .nav-listing .contact .contact-di {
    height: 180px;
    background-image: linear-gradient(-176deg, #ffffff 0%, #f2f2f2 100%);
}

.nav .nav-center .nav-listing .contact .contact-di .contact-nav {
    width: 179px;
    height: 110px;
    line-height: 20px;
    padding-top: 37px;
    margin-left: 25px;
    font-family: PingFangSC-Regular;
    font-size: 14px;
    color: #464646;
    letter-spacing: 0;
}

.nav .nav-center .nav-listing .contact .contact-di .contact-nav span {
    line-height: 20px;
    margin-bottom: 25px;
}

.nav .nav-center .nav-img {
    width: 821px;
    padding-top: 30px;
    margin-left: 49px;
}

.nav .nav-center .nav-img .img-top h4 {
    margin-top: 10px;
    height: 22px;
    line-height: 22px;
    font-family: PingFangSC-Regular;
    font-size: 16px;
    color: #494949;
}

.nav .nav-center .nav-img .img-top .img-top-daoheng {
    float: right;
    margin-top: -20px;
    font-family: PingFangSC-Regular;
    font-size: 12px;
    color: #272727;
    letter-spacing: 0;
}

.nav .nav-center .nav-img .img-top .img-top-daoheng span {
    font-size: 12px;
    height: 17px;
    color: #000000;
    letter-spacing: 0;
    line-height: 17px;
}

.nav .nav-center .nav-img .img-top .img-top-daoheng span:last-child a {
    color: #689EDE;
}

.nav .nav-center .nav-img .img-top .key {
    width: 826px;
    height: 2px;
    margin-top: 10px;
    background: #EDEDED;
}

.nav .nav-center .nav-img .img-top .key3 {
    width: 72px;
    height: 5px;
    margin-top: -3px;
    background: #1BCBAE;
}

.nav .nav-center .nav-img .news ul {
    margin-top: 15px;
    min-height: 648px;
    margin-bottom: 112px;
}

.nav .nav-center .nav-img .news ul li {
    border-bottom: 1px dashed #D0D0D0;
    box-sizing: border-box;
    height: 49px;
}

.nav .nav-center .nav-img .news ul li .newsimg {
    float: left;
    margin-top: 19px;
    margin-left: 3px;
    width: 5px;
    height: 12px;
    line-height: 9px;
    text-align: center;
}

.nav .nav-center .nav-img .news ul li .newsimg img {
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 100%;
    vertical-align: middle;
}

.nav .nav-center .nav-img .news ul li p a {
    float: left;
    height: 25px;
    margin-top: 10px;
    margin-left: 32px;
    font-family: PingFangSC-Medium;
    font-size: 16px;
    color: #5b5b5b;
    letter-spacing: 0;
}

.nav .nav-center .nav-img .news ul li a:hover {
    color: #1BCBAE;
}

.nav .nav-center .nav-img .news ul li span {
    float: right;
    height: 17px;
    display: inline-block;
    margin-top: 13px;
    font-family: PingFangSC-Regular;
    font-size: 14px;
    color: #999;
    letter-spacing: 0;
}

.nav .nav-center .nav-img .news .fenye {
    margin: 0 auto;
}