.section-header{margin-bottom:var(--space-8)}.section-description{color:var(--muted-foreground);font-size:var(--fs-base);line-height:var(--lh-normal);margin-top:var(--space-3)}.section-empty{border:1px solid var(--border);border-radius:var(--border-radius);padding:var(--space-6);text-align:center;background:color-mix(in srgb,var(--surface) 92%,transparent)}.section-emptyMessage{color:color-mix(in srgb,var(--muted-foreground) 85%,var(--foreground));font-size:var(--fs-base)}.section-emptyHint{margin-top:var(--space-3);font-size:var(--fs-sm);color:var(--muted-foreground)}.math-category-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:var(--space-3)}.math-category-list__item{margin:0}.math-category-list__link{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);padding:var(--space-4) var(--space-5);border:1px solid var(--border);border-radius:var(--border-radius);text-decoration:none;color:var(--foreground);transition:border-color .16s ease,background-color .16s ease}@media (hover:hover) and (pointer:fine){.math-category-list__link:hover{border-color:var(--link-color);background:color-mix(in srgb,var(--surface) 92%,transparent)}}.math-category-list__name{font-size:var(--fs-lg);font-weight:600}.math-pages{display:flex;flex-direction:column;gap:var(--space-4)}.math-page-card{display:block;padding:var(--space-5);border:1px solid var(--border);border-radius:var(--border-radius);text-decoration:none;color:var(--foreground);transition:border-color .16s ease,background-color .16s ease}@media (hover:hover) and (pointer:fine){.math-page-card:hover{border-color:var(--link-color);background:color-mix(in srgb,var(--surface) 92%,transparent)}}.math-page-card__title{font-size:var(--fs-lg);font-weight:600;margin:0}.math-page-card__lead{margin-top:var(--space-2);font-size:var(--fs-sm);line-height:var(--lh-normal);color:var(--muted-foreground)}.math-defindex-link-wrap{margin-top:var(--space-8);padding-top:var(--space-6);border-top:1px solid var(--border)}.math-defindex-link{font-size:var(--fs-sm);color:var(--link-color);text-decoration:none;transition:color .16s ease}@media (hover:hover) and (pointer:fine){.math-defindex-link:hover{color:var(--link-hover)}}.math-defpage__group{margin-bottom:var(--space-8)}.math-defpage__pagetitle{font-size:var(--fs-lg);font-weight:600;padding-bottom:var(--space-2);margin-bottom:var(--space-4);border-bottom:1px solid var(--border)}.math-system__entries{display:flex;flex-direction:column;gap:var(--space-6)}.math-system__content{white-space:pre-line}.section-nav{margin-top:var(--space-8)}.section-navLink{font-size:var(--fs-sm);color:var(--link-color);text-decoration:none;transition:color .16s ease}@media (hover:hover) and (pointer:fine){.section-navLink:hover{color:var(--link-hover)}}