.about_hs_det .tt{
    font-size: var(--f40);
    line-height: 1;
    padding-left: 1.8em;
    position: relative;
}
.about_hs_det .tt::before{
    content: '';
    position: absolute;
    display: block;
    left: 0;
    height: 100%;
    width: 1.5em;
    background: url("../images/tit-dian.png") no-repeat center center/auto 100%;
}
.about_hs_det .hd{
    padding-bottom: 2.5rem;
    border-bottom: 1px solid #dbdddf;
}
.about_hs_det .subt{
    font-size: var(--f26);
    color: #fff;
    padding: .6rem 6rem .5rem 2rem;
    font-weight: bold;
    display: inline-block;
    background: linear-gradient(90deg, var(--themeColor) 0%,transparent 100%);
}