.fold {
    background: var(--surface);
    border: 2px solid var(--border);
    box-shadow:
        3px 3px 0 var(--hard-shadow),
        inset 1px 1px 0 var(--bevel-light);
}

.fold + .fold {
    margin-top: 0.75rem;
}

.fold > summary {
    display: flex;
    gap: 0.6rem;
    align-items: baseline;
    padding: 0.4rem var(--space-md);
    font-weight: 700;
    color: var(--accent);
    cursor: pointer;
    list-style: none;
}

/* Safari */
.fold > summary::-webkit-details-marker {
    display: none;
}

.fold > summary::before {
    content: "\25B8";
    flex: none;
    color: var(--deco);
    transition: transform 120ms;
}

.fold[open] > summary::before {
    transform: rotate(90deg);
}

.fold > summary:hover {
    background: color-mix(in srgb, var(--accent) 12%, transparent);
}

.fold > summary:focus-visible {
    outline: 2px solid var(--deco);
    outline-offset: -4px;
}

.fold[open] > summary {
    border-bottom: 2px dashed var(--border);
}

.fold-body {
    padding: 0.6rem var(--space-md) 0.75rem;
}

.fold-body > * + * {
    margin-top: 0.75rem;
}

@media (prefers-reduced-motion: reduce) {
    .fold > summary::before {
        transition: none;
    }
}