.chapter-nav{z-index:40;background:color-mix(in srgb,var(--bg)92%,transparent);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);position:sticky;top:4.25rem}.chapter-nav-track{overscroll-behavior-x:contain;scrollbar-width:none;gap:.25rem;margin-inline:-1.5rem;padding-inline:1.5rem;display:flex;position:relative;overflow-x:auto}.chapter-nav-track::-webkit-scrollbar{display:none}.chapter-nav-link{font-family:var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--text-secondary);border-bottom:2px solid #0000;flex:none;margin-bottom:-1px;padding-block:.875rem;padding-inline:.75rem;font-size:.6875rem;font-weight:500;transition:color .15s,border-color .15s}.chapter-nav-link:hover{color:var(--text)}.chapter-nav-link[aria-current]{color:var(--accent);border-bottom-color:var(--accent)}@media (min-width:768px){.chapter-nav-track{gap:.5rem;margin-inline:-2rem;padding-inline:2rem}.chapter-nav-link{padding-inline:1rem}}
.category-summary+.category-summary{border-top:1px solid var(--border)}.category-summary{scroll-margin-top:3.5rem}.category-summary-emphasis{background:var(--surface-sunken);border-bottom:1px solid var(--border)}.category-summary-grid{grid-template-columns:1fr;gap:2rem;display:grid}.category-summary-copy{max-width:34rem}.category-summary-heading{margin-top:.875rem}.category-summary-subhead{margin-top:.75rem}.category-summary-link{margin-top:1.25rem}.category-summary-list{flex-direction:column;gap:0;margin:0;padding:0;list-style:none;display:flex}.category-summary-item{border-bottom:1px solid var(--border);color:var(--text-secondary);flex-wrap:wrap;align-items:baseline;gap:.5rem;padding-block:.625rem;font-size:.9375rem;line-height:1.5;display:flex}.category-summary-item:last-child{border-bottom:none}.category-summary-item-title{color:var(--text);font-weight:500}@media (min-width:64rem){.category-summary-grid{grid-template-columns:minmax(0,5fr) minmax(0,4fr);align-items:start;gap:4rem}}