.category-browser {
  display: grid;
  grid-template-columns: minmax(180px, 24%) minmax(0, 1fr);
  gap: 24px;
  margin-top: 20px;
}

.category-sidebar {
  border: 1px solid #d8dee4;
  border-radius: 8px;
  padding: 14px;
  position: sticky;
  top: 16px;
  align-self: start;
  background: #fff;
}

.category-sidebar-title {
  margin: 0 0 10px 0;
  font-size: 1.05rem;
}

.category-nav {
  display: grid;
  gap: 8px;
}

.category-tab {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  border: 1px solid #d0d7de;
  border-radius: 8px;
  background: #f6f8fa;
  padding: 8px 10px;
  text-align: left;
  cursor: pointer;
  font-size: 0.92rem;
}

.category-tab:hover {
  background: #eef2f7;
}

.category-tab.is-active {
  border-color: #0969da;
  background: #ddefff;
  color: #0550ae;
}

.category-tab-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  padding-right: 8px;
}

.category-tab-count {
  min-width: 24px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid #d0d7de;
  text-align: center;
  padding: 1px 6px;
  font-size: 0.82rem;
}

.category-main {
  min-width: 0;
}

.category-panel {
  display: none;
}

.category-panel.is-active {
  display: block;
}

.category-panel-title {
  margin: 0 0 12px 0;
  font-size: 1.15rem;
}

.category-article-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.category-article {
  border-bottom: 1px solid #eaeef2;
  padding: 12px 0;
}

.category-article-meta {
  margin: 0 0 6px 0;
  color: #656d76;
  font-size: 0.85rem;
}

.category-article-title {
  font-size: 1rem;
  font-weight: 600;
}

.category-article-preview {
  margin: 8px 0 0 0;
  color: #57606a;
  font-size: 0.92rem;
  line-height: 1.45;
}

.category-pagination {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.category-pagination button {
  border: 1px solid #d0d7de;
  background: #fff;
  border-radius: 6px;
  padding: 4px 10px;
  cursor: pointer;
}

.category-pagination button.is-current {
  border-color: #0969da;
  background: #0969da;
  color: #fff;
}

.category-pagination button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

@media (max-width: 860px) {
  .category-browser {
    grid-template-columns: 1fr;
  }

  .category-sidebar {
    position: static;
  }
}