.page-header{margin-bottom:2rem}.page-header h1{margin:0 0 .5rem;font-size:1.75rem}.page-header p{color:var(--color-text-muted);margin:0;line-height:1.5}.topics-grid{grid-template-columns:repeat(auto-fill,minmax(168px,1fr));gap:.85rem;display:grid}@media (min-width:900px){.topics-grid{grid-template-columns:repeat(auto-fill,minmax(185px,1fr));gap:1rem}}.topics-page{padding-bottom:2rem}.content-loading{color:var(--color-text-muted);font-size:.92rem}.content-error{color:var(--color-red);font-size:.92rem}