.category-hero { padding: 90px 0 40px; }
.category-shell { max-width: 1200px; margin: 0 auto; }
.category-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    font-size: 12px;
    color: var(--muted);
    margin-bottom: 14px;
    position: relative;
    z-index: 2;
}
.category-breadcrumb a {
    color: inherit;
    pointer-events: auto;
}
.category-layout {
    display: flex;
    gap: 32px;
    align-items: flex-start;
}
.category-layout > div {
    flex: 1 1 auto;
    min-width: 0;
}
.category-side {
    flex: 0 0 auto;
    width: 220px;
}
.category-panel {
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 20px;
    display: grid;
    gap: 14px;
}
.subcategory-list {
    display: grid;
    gap: 10px;
}
.subcategory-list.is-collapsed .subcategory-link:nth-child(n + 9) {
    display: none;
}
.subcategory-link {
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 8px 12px;
    font-size: 13px;
    color: var(--muted);
    background: #f8fafc;
    display: block;
}
.subcategory-link:hover {
    color: var(--accent-strong);
    border-color: rgba(37, 99, 235, 0.35);
}
.subcategory-toggle {
    border: 1px dashed var(--line);
    background: #ffffff;
    color: var(--muted);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 12px;
    cursor: pointer;
}
.article-list {
    display: grid;
    gap: 14px;
}
.article-card {
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 16px 18px;
    box-shadow: 0 10px 22px rgba(15, 23, 42, 0.05);
    display: grid;
    gap: 8px;
}
.article-card.has-cover {
    grid-template-columns: 160px minmax(0, 1fr);
    gap: 16px;
    align-items: center;
}
.article-cover {
    height: 110px;
    border-radius: 12px;
    overflow: hidden;
    background: #eef2f8;
}
.article-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.article-card h2 {
    margin: 0;
    font-size: 18px;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 12px;
    color: var(--muted);
}
.article-excerpt {
    color: var(--muted);
    font-size: 13px;
    line-height: 1.6;
}
@media (max-width: 1100px) {
    .category-layout { flex-direction: column; }
    .category-side { width: 100%; }
}
@media (max-width: 860px) {
    .article-card.has-cover {
        grid-template-columns: 1fr;
    }
    .article-cover {
        height: 180px;
    }
}