.footer_box{
    width: 100%;
    background-color: #333333;
    padding-top: calc(20px + 4rem);
    padding-bottom:calc(13px + 3rem)
}
.footer{
    max-width: 1400px;
    width: 85%;
    margin: auto;
    display: flex;
    justify-content: space-between;
}
.footer_logo img{
    width: calc(90px + 5rem);
}
.footer_logo p{

font-family: OPPOSans-R;
font-weight: normal;
font-size: calc(10px + 0.5rem);
color: #FFFFFF;
line-height: calc(10px + 1rem);
margin-top: calc(5px + 1.5rem);
}

.footer_nav{
    width: calc(11px + 10rem);
}
.footer_title{

}
.footer_title p{
font-family: OPPOSans-R;
font-weight: normal;
font-size: calc(10px + 0.5rem);
color: #FFFFFF;
line-height: 1;
}
.footer_title .line{
    width: 100%;
    height: 1px;
    background-color: #828282;
    margin-top: calc(7px + 0.5rem);
}
.footer_nav_box {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    row-gap: calc(1px + 1rem);
    margin-top: calc(2px + 2rem);
}
.footer_nav_box .footer_nav_item{
    width: 50%;
}
.footer_nav_box .footer_nav_item a{
    width: 100%;
font-family: Microsoft YaHei;
font-weight: 400;
font-size: calc(8px + 0.5rem);
color: #FFFFFF;
line-height: 1;
}

.footer_contact{
    width: calc(40px + 15rem);
}