.scroll-top {
    position: fixed;
    right: max(16px, env(safe-area-inset-right));
    bottom: max(16px, env(safe-area-inset-bottom));
    z-index: 9000;
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 50%;
    background: rgba(85, 107, 47, 0.92);
    color: #fff;
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.18);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease, background 0.15s ease;
}

.scroll-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top:hover,
.scroll-top:focus {
    background: #3f5222;
    outline: none;
}

.scroll-top:focus-visible {
    outline: 2px solid #24ab77;
    outline-offset: 2px;
}