.smart_download  .home-bottom{
    width: 100%;
    height: 16.3rem;
    background-color: #191919;
    display: flex;
    align-items: center;
    position: relative;
}

.smart_download .home-bottom::before {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    background: #191919;
    z-index: -1; /* 将背景色置于底层 */
}

.smart_download .home-bottom .title{
    font-family: 'bahnschrift';
    font-weight: 800;
    font-size: 10.53rem;
    color: #474747;
    text-align: left;
    font-style: normal;
    text-transform: none;
    margin-left: 8.1rem;

    font-stretch: condensed;
}
.smart_download .phone_icon{
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3.3rem;
}
.smart_download .search_phone{
    margin-left: 26.2rem;
}
.smart_download .IOS {
    background-color: #f12535;
    color: #fff;
    letter-spacing: 0.2rem;
}
.smart_download .Android, .smart_download .IOS {
    width: 28.2rem;
    height: 5.4rem;
    display: block;
    border: 1px solid #f12535;
    display: flex;
    color: #fff;
;
    justify-content: center;
    align-items: center;
    gap: 1.2rem;
    border-radius: 1rem;
    font-size: 2rem;
}
.smart_download .Android img{
    width: 2.7rem;
    height: 3.1rem;
    object-fit: cover;
}
.smart_download .IOS img{
    width: 2.5rem;
    height: 2.9rem;
    object-fit: cover;
}
.smart_download .search-app {
    display: flex;
    justify-content: center;
    margin-top: 1.4rem;
}
.smart_download .search-app img {
    width: 2.4rem;
    margin-right: 1rem;
    height: 2.3rem;
}
.smart_download .search-let {
    font-size: 1.3rem;
    font-weight: 800;
    color: #fff;
}

.smart_download .scan{
    position: absolute;
    right: 7rem;
    bottom: 6rem;
    z-index: 2;
    border: 2rem solid #fff;
    background-color: #fff;
    width: 20rem;
    height: 20rem;
}
.smart_download .scan img{
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.smart_download .search-let span {
    font-size: 1.7rem;
    color: #f12535;
}
@media only screen and (max-width: 767px) {
    .smart_download .scan{
        width: 32rem;
        height: 32rem;
        right: 12rem;
        bottom: 24rem;
    }
    .smart_download .home-bottom .title{
        display: none;
    }
    .smart_download .home-bottom {
        height: 43.3rem;
    }
    .smart_download .search-let {
        font-size: 5.3rem;
    }
    .smart_download .Android, .smart_download .IOS {
        width: 67.2rem;
        height: 18.4rem;
        border-radius: 3rem;
        font-size: 6rem;
    }
    .smart_download .search_phone {
        margin-left: 7.2rem
    }
    .smart_download .phone_icon {

        justify-content: flex-start;

    }
}