.article-toc__backtotop[data-v-8dc87266] {
    position: fixed;
    right: 1.25rem;
    bottom: 1.25rem;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--brand-bgcolor);
    color: var(--brand-frontcolor);
    box-shadow: 0 2px 8px rgba(0, 0, 0, .2);
    text-decoration: none;
}