.scnm-single-grid {
    display: grid;
    gap: 2rem;
}

.scnm-heading-sidebar {
    display: none;
    margin-left: 1rem;
}

.scnm-heading-sidebar-placeholder {
    display: none;
}

.scnm-heading-sidebar__title {
    color: var(--wp--preset--color--primary);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0;
    line-height: 1.2;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
}

.scnm-heading-sidebar__list {
    border-left: 3px solid var(--wp--preset--color--primary);
    list-style: none;
    padding-left: 0;
}

.scnm-heading-sidebar__link {
    color: #333;
    display: block;
    font-size: 0.95rem;
    line-height: 1.35;
    padding: 0.45rem 0 0.45rem 1rem;
    text-decoration: none;
}

.scnm-heading-sidebar__link:hover,
.scnm-heading-sidebar__link:focus {
    color: var(--wp--preset--color--primary);
    text-decoration: underline;
    text-underline-offset: 0.2em;
}

.scnm-heading-sidebar__link--h3 {
    font-size: 0.9rem;
    padding-left: 1.75rem;
}

.scnm-heading-sidebar__link--h4 {
    font-size: 0.85rem;
    padding-left: 2.5rem;
}

.wp-block-post-content [id] {
    scroll-margin-top: 2rem;
}

@media (min-width: 60rem) {
    .scnm-single-grid {
        align-items: start;
        display: grid;
        grid-template-columns: minmax(180px, 240px) minmax(0, 1fr);
    }

    .scnm-heading-sidebar {
        align-self: start;
        display: block;
        position: sticky;
        top: 1.5rem;
    }

    .scnm-heading-sidebar-placeholder {
        display: block;
    }

    .scnm-single-main {
        min-width: 0;
    }
}