/* toc.css */
.toc {
    background: var(--c-card);
    border-radius: var(--radius-md);
    padding: 0.5rem 1rem;
    margin-top: var(--space-section);
}
.toc__toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.75rem 0.25rem;
    color: var(--c-white);
}
.toc__title { font-size: var(--fs-h3); font-weight: var(--fw-bold); }
.toc__arrow {
    width: 12px; height: 12px;
    border-right: 3px solid var(--c-heading);
    border-bottom: 3px solid var(--c-heading);
    transform: rotate(45deg);
    transition: transform var(--transition);
    flex: 0 0 auto;
}
.toc__toggle[aria-expanded="false"] .toc__arrow { transform: rotate(-45deg); }

.toc__list {
    display: grid;
    gap: 0.5rem;
    padding: 0.5rem 0.25rem 0.75rem;
    overflow: hidden;
}
.toc[data-collapsed="true"] .toc__list { display: none; }
.toc__list li { padding-left: 0; }
.toc__link {
    display: block;
    color: var(--c-text);
    padding: 0.35rem 0;
    border-bottom: 1px solid rgba(79,106,104,0.2);
    transition: color var(--transition);
}
.toc__link:hover { color: var(--c-heading); }