.section-heading {
    display: flex;
    gap: 1.5rem;
    justify-content: space-between;
    align-items: end;
    padding-block: 1.25rem 1.5rem;
    border-top: 1px solid var(--border);
}

.section-heading .eyebrow {
    margin-bottom: .5rem;
}

.section-title {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
}

.article-count {
    color: var(--text-muted);
    font-size: .9375rem;
    white-space: nowrap;
}

.topic-nav {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    padding-bottom: 1.5rem;
}

.topic-nav a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: .25rem 1rem;
    border: 1px solid var(--border);
    border-radius: 2rem;
    color: var(--text-muted);
    font-size: .9375rem;
    text-decoration: none;
    transition: background-color 180ms, border-color 180ms;
}

.topic-nav a:hover {
    background: var(--surface);
    text-decoration: underline;
}

.topic-nav a[aria-current] {
    background: var(--brand);
    border-color: var(--brand);
    color: var(--on-brand);
}

.topic-nav .topic-catalog-link {
    border-style: dashed;
    color: var(--brand);
}

.article-list {
    display: grid;
    gap: 1rem;
}

.article-list--single .article-card {
    min-height: 18rem;
}

.article-list--single .article-card-body {
    justify-content: center;
    max-width: 44rem;
}

.article-list--single .article-card h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
}

.article-card {
    display: flex;
    min-width: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    background: var(--surface);
    transition: background-color 180ms, border-color 180ms;
}

.article-card:hover {
    background: var(--surface-raised);
    border-color: var(--control-border);
}

.article-card-body {
    display: flex;
    flex: 1;
    flex-direction: column;
    min-width: 0;
    padding: 1.5rem;
}

.article-card h2 {
    margin-block: .75rem;
    font-size: clamp(1.35rem, 2.5vw, 1.75rem);
}

.article-card h2 a {
    color: var(--text);
    text-decoration: none;
}

.article-card h2 a:hover {
    text-decoration: underline;
    text-decoration-thickness: 1px;
}

.article-arrow {
    color: var(--brand);
    font-family: var(--font-body);
    font-weight: 400;
}

.article-summary {
    color: var(--text-muted);
}

.article-card .article-meta {
    margin-top: auto;
    padding-top: 1.5rem;
}

.listing-heading {
    max-width: 50rem;
    margin-bottom: 3rem;
}

.listing-heading h1 {
    margin-block: 1rem;
}

.listing-heading > p:last-child {
    color: var(--text-muted);
}

.empty-state {
    border-block: 1px solid var(--border);
    padding-block: 3rem;
}

.empty-state h2 {
    margin-bottom: .75rem;
    font-size: 1.5rem;
}

.empty-state p {
    color: var(--text-muted);
}

@media (min-width: 48rem) {
    .article-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .article-list--single {
        grid-template-columns: minmax(0, 1fr);
    }

    .article-list--single .article-card-body {
        padding: clamp(2rem, 5vw, 4rem);
    }
}

@media (min-width: 64rem) {
    .article-list {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .article-list--single {
        grid-template-columns: minmax(0, 1fr);
    }
}

@media (max-width: 47.99rem) {
    .section-heading {
        flex-direction: column;
        align-items: flex-start;
        gap: .35rem;
    }

    .article-count {
        margin-left: .05rem;
    }
}