#ph-scroll-top {
    position: fixed;
    right: 18px;
    bottom: 22px;
    z-index: 95;
    width: 40px;
    height: 40px;
    background: #000;
    color: #fff;
    border: 2px solid #fff;
    box-sizing: border-box;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    line-height: 1;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
    border-radius: 14px;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    -webkit-transform: translate3d(0, 12px, 0);
    transform: translate3d(0, 12px, 0);
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
    transition:
        opacity 0.42s cubic-bezier(0.22, 0.61, 0.36, 1),
        transform 0.42s cubic-bezier(0.22, 0.61, 0.36, 1),
        background 0.2s ease,
        visibility 0s linear 0.42s;
}
#ph-scroll-top.is-visible {
    opacity: 1;
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
    pointer-events: auto;
    visibility: visible;
    transition:
        opacity 0.42s cubic-bezier(0.22, 0.61, 0.36, 1),
        transform 0.42s cubic-bezier(0.22, 0.61, 0.36, 1),
        background 0.2s ease,
        visibility 0s linear 0s;
}
#ph-scroll-top.is-visible:hover {
    background: #333;
    -webkit-transform: translate3d(0, -1px, 0);
    transform: translate3d(0, -1px, 0);
}
#ph-scroll-top:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
}
.ph-scroll-top__ico {
    display: block;
    flex-shrink: 0;
}

@media (prefers-reduced-motion: reduce) {
    #ph-scroll-top,
    #ph-scroll-top.is-visible {
        transition-duration: 0.01s;
        transition-delay: 0s;
    }
}