:root{
    scroll-behavior: smooth;
}
#achang-ft-btn:not(.init){
    display: none;
}
#achang-ft-btn {
    position: fixed;
    transition: opacity .6s;
}
#achang-ft-btn.close{
    opacity: 0;
    pointer-events: none;
}
#achang-ft-btn>ul{
    display: flex;
    justify-content: center;
    align-items: center;
    gap: .6em;
    padding: 0;
    margin: 0;
}

#achang-ft-btn li{
    display: inline-flex;
    overflow: hidden;
    justify-content: center;
    align-items: center;
    transition: transform .2s;
    border-radius: 50%;
    background-image: none;
    background-position: center;
    background-size: cover;

}
#achang-ft-btn li:hover{
    transform: scale(1.1);
    transition: transform .6s;
    animation: lighter 2s infinite alternate both;
}
#achang-ft-btn li>*,
#achang-ft-btn li img{
    max-width: 100%;
    margin: 0;
    height: auto;
    vertical-align: middle;
}

@media (max-width: 767px) {
    #achang-ft-btn li.hide\:sm{
        display: none;
    }
}

@keyframes lighter {
    to {
        filter: brightness(1.1);
    }
}