:root{
  --category-item-padding: 6px 8px;
  --category-font-size: 0.95rem;
  --category-count-bg: transparent;
}

.category-collapse{width:100%;}
.category-list{overflow:hidden; transition: max-height 280ms ease, opacity 200ms ease; max-height:0; opacity:0;}
.category-list.expanded{max-height:600px; opacity:1;}
.category-item{display:flex;justify-content:space-between;align-items:center;padding:var(--category-item-padding);font-size:var(--category-font-size);color:var(--text-color,#fff);text-decoration:none;border-bottom:1px solid rgba(255,255,255,0.04);background:transparent}
.category-item:hover{background:rgba(255,255,255,0.02);}
.category-item.active{font-weight:600;color:var(--nexus-gold,#f0c06b)}
.category-item .count{background:var(--category-count-bg);color:rgba(255,255,255,0.7);padding:2px 6px;border-radius:12px;font-size:0.85rem}