nav {
    box-shadow: 0px 0.14rem 0.1rem -0.1rem rgb(14 5 10 / 5%);
    padding-bottom: 0.2rem !important;
}
#main{
    margin-top: 0.53rem;
}
#main .title-intro{
    margin-top: 0.17rem;
}
#main .title-intro p{
    font-size: 0.3rem;
    line-height: 0.48rem;
    color: #666666;
    text-align: center;
}
#main .process-img{
    margin-top: 0.37rem;
}
#main .guidance{
    background-color: #f0f1f5;
    margin-top: 0.65rem;
    overflow: hidden;
}
#main .guidance .title-flex{
    margin-top: 0.56rem;
}
#main .guidance .flex-box{
    display: flex;
    margin-top: 0.43rem;
    padding-bottom: 0.7rem;
}
#main .guidance .img-box:first-child{
    margin-right: 0.3rem;
    padding-bottom: 0.57rem;
}
#main .guidance .img-box:last-child{
    padding-top: 0.54rem;
}
#main .guidance .img-box div:last-child{
    margin-top: 0.3rem;
}
#main .install .img-box{
    margin-top: 0.37rem;
}
#main .install .flex-box{
    display: flex;
    margin-top: 0.3rem;
}
#main .install .flex-box div:first-child{
    margin-right: 0.3rem;
}