.nav_list {
    width: 100%;
    height: 60px;
    background: linear-gradient(180deg, #002728 0%, #001728 100%);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
}

.nav_box {
    width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
}

.nav_box .nav_left {
    margin-top: 12px;
}

.nav_box .nav_right {
    width: 400px;
    height: 60px;
    position: relative;
}

.nav_box .nav_right .silder {
    position: absolute;
    width: 100px;
    height: 2px;
    background: #09ACB3;
    left: 0;
    bottom: 0;
    pointer-events: none;
    transition: all 0.3s;
}

.nav_box .nav_right .silder.silder1 {
    left: 100px;
}

.nav_box .nav_right .silder.silder2 {
    left: 200px;
}

.nav_box .nav_right .silder.silder3 {
    left: 300px;
}

.nav_box .nav_right ul {
    padding: 0;
    margin: 0;
    width: 400px;
    height: 100%;
}

.nav_box .nav_right ul li {
    position: relative;
    width: 100px;
    height: 60px;
    line-height: 60px;
    text-align: center;
    float: left;
    cursor: pointer;
}

.nav_box .nav_right ul li a {
    width: 100px;
    height: 60px;
    font-size: 16px;
    font-family: SourceHanSansCN-Normal, SourceHanSansCN;
    font-weight: 400;
    color: #FFFFFF;
    letter-spacing: 1px;
    transition: all 0.3s;
    text-decoration: none;
    display: block;
}

.nav_box .nav_right ul li a:hover {
    color: #09ACB3;
}

.nav_box .nav_right ul li a.active {
    color: #09ACB3;
}

.nav_box .nav_right ul li.products:hover .second_nav {
    display: block;
}

.second_nav {
    width: 180px;
    height: 164px;
    background: #001828;
    border-radius: 0px 0px 4px 4px;
    position: absolute;
    bottom: -164px;
    left: -40px;
    padding: 10px 0;
    display: none;
}

.second_nav.active {
    display: block;
}

.second_nav a {
    display: block;
    width: 150px !important;
    height: 36px !important;
    background: #001828;
    font-size: 14px !important;
    font-family: SourceHanSansCN-Normal, SourceHanSansCN;
    font-weight: 400;
    color: #FFFFFF;
    line-height: 36px;
    padding-left: 30px;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    text-align: left;
}

.second_nav a:hover {
    color: #09ACB3;
    text-decoration: none
}

.second_nav a.active {
    color: #09ACB3;
}

.bottom {
    width: 100%;
    height: 215px;
    background: #2E3333;
    border-radius: 1px;
    margin-top: 50px;
    ;
}

.bottom_content {
    width: 1200px;
    height: 162px;
    margin: 0 auto;
    padding: 0px 10px;
    display: flex;
    justify-content: start;
}

.bottom_content .left {
    height: 100%;
    font-size: 18px;
    font-family: PingFangSC-Regular, PingFang SC;
    font-weight: 400;
    color: #FFFFFF;
    margin-top: 30px;
}

.bottom_content .left img {
    vertical-align: top;
}

.bottom_content .left .bottom_btn {
    width: 120px;
    height: 40px;
    background: linear-gradient(135deg, #52BCBF 0%, #269599 100%);
    border-radius: 4px;
    line-height: 40px;
    text-align: center;
    margin-top: 20px;
}

.bottom_content .left .bottom_btn a {
    text-decoration: none;
    color: #fff;
}

.bottom_content .center {
    /* width: 100%; */
    /* margin-left: 205px; */
    margin-right: auto;
    margin-left: auto;
    margin-top: 30px;
}

.bottom_text span {
    display: inline-block;
    width: 144px;
    /*	height: 72px;*/
    font-size: 12px;
    font-family: PingFangSC-Regular, PingFang SC;
    font-weight: 400;
    color: #FFFFFF;
    line-height: 24px;
}

.bottom_text span a {
    color: #FFFFFF;
    text-decoration: none;
    cursor: pointer;
}

.bottom_text span:nth-child(2) {
    margin-left: 150px;
}

.bottom_text:nth-child(1) span {
    height: 25px;
    font-size: 18px;
    font-family: PingFangSC-Regular, PingFang SC;
    font-weight: 400;
    color: #FFFFFF;
    line-height: 25px;
    margin-bottom: 10px;
}

.bottom_content .right {
    margin-left: 253px;
    margin-top: 18px;
}

/*.copyright {*/

/*width: 100%;*/

/*height: 47px;*/

/*line-height: 47px;*/

/*text-align: center;*/

/*font-size: 12px;*/

/*font-family: PingFangSC-Regular, PingFang SC;*/

/*border-top: 1px solid rgba(255, 255, 255, .1);*/

/*font-weight: 400;*/

/*color: #FFFFFF;*/

/*}*/

.copyright {
    width: 100%;
    height: 52px;
    line-height: 22px;
    padding-top: 3px;
    text-align: center;
    font-size: 12px;
    font-family: PingFangSC-Regular, PingFang SC;
    border-top: 1px solid rgba(255, 255, 255, .1);
    font-weight: 400;
    color: #FFFFFF;
}

.copyrighthref {
    text-decoration: none;
    color: #FFFFFF;
}

.copyrighthref:hover,
.copyrighthref:visited,
.copyrighthref:link,
.copyrighthref:active {
    text-decoration: none;
    color: #FFFFFF;
}

div::selection,
h2::selection,
h3::selection,
span::selection,
a::selection {
    background: #09ACB3;
    color: #fff;
}