:root {
  --sidebar: 272px;
  --bg: oklch(14.5% 0.004 265);
  --panel: oklch(17.5% 0.004 265);
  --text: oklch(96% 0.004 265);
  --muted: oklch(66% 0.008 265);
  --faint: oklch(49% 0.006 265);
  --line: oklch(25% 0.006 265);
  --accent: oklch(83% 0.115 174);
  --button: oklch(23% 0.006 265);
  --sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
:root[data-theme="light"] {
  --bg: oklch(98% 0.003 265);
  --panel: oklch(95% 0.004 265);
  --text: oklch(18% 0.006 265);
  --muted: oklch(44% 0.008 265);
  --faint: oklch(60% 0.006 265);
  --line: oklch(87% 0.006 265);
  --accent: oklch(59% 0.13 174);
  --button: oklch(91% 0.006 265);
}
* { box-sizing: border-box; }
html { background: var(--bg); color-scheme: dark; scroll-behavior: smooth; }
html[data-theme="light"] { color-scheme: light; }
body { margin: 0; color: var(--text); background: var(--bg); font-family: var(--sans); font-size: 15px; line-height: 1.65; }
a { color: inherit; text-decoration-color: color-mix(in oklch, currentColor 35%, transparent); text-underline-offset: .2em; }
a:hover { color: var(--accent); }
.sidebar { position: fixed; inset: 0 auto 0 0; z-index: 20; display: flex; width: var(--sidebar); flex-direction: column; border-right: 1px solid var(--line); background: var(--bg); }
.profile { display: flex; min-height: 68px; align-items: center; gap: 12px; padding: 0 20px; border-bottom: 1px solid var(--line); font-size: 13px; font-weight: 600; text-decoration: none; }
.avatar { display: grid; width: 30px; height: 30px; place-items: center; border-radius: 50%; color: oklch(17% 0.02 174); background: var(--accent); font-size: 12px; font-weight: 800; }
.sidebar-body { flex: 1; overflow-y: auto; padding: 22px 18px; }
.nav-label { margin: 0 0 13px; color: var(--faint); font-size: 11px; }
.sidebar ol { margin: 0; padding: 0; list-style: none; }
.sidebar li { margin: 0; }
.sidebar li a { display: grid; grid-template-columns: 22px 1fr; gap: 2px; padding: 6px 0; color: var(--muted); font-size: 12px; line-height: 1.35; text-decoration: none; }
.sidebar li a span { color: var(--faint); font-size: 10px; }
.sidebar li a:hover, .sidebar li a.active { color: var(--text); }
.archive-link { margin: 18px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 7px; background: var(--button); font-size: 12px; font-weight: 650; text-align: center; text-decoration: none; }
.topbar { position: fixed; inset: 0 0 auto var(--sidebar); z-index: 15; display: flex; height: 64px; align-items: center; justify-content: flex-end; gap: 10px; padding: 0 20px; background: linear-gradient(to bottom, var(--bg) 60%, transparent); }
.controls { display: flex; align-items: center; gap: 9px; }
.controls > a { padding: 8px 12px; border: 1px solid var(--line); border-radius: 7px; background: var(--button); font-size: 11px; font-weight: 650; text-decoration: none; }
.theme-toggle { display: flex; align-items: center; gap: 7px; padding: 6px 8px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); background: var(--button); cursor: pointer; }
.theme-toggle i { position: relative; width: 24px; height: 14px; border-radius: 999px; background: var(--line); }
.theme-toggle i::after { position: absolute; top: 2px; left: 2px; width: 10px; height: 10px; border-radius: 50%; background: var(--text); content: ""; transition: transform .18s cubic-bezier(.2,.8,.2,1); }
[data-theme="light"] .theme-toggle i::after { transform: translateX(10px); }
.mobile-brand, .mobile-menu { display: none; }
.main-shell { width: min(690px, calc(100% - var(--sidebar) - 48px)); margin-left: calc(var(--sidebar) + max(48px, (100vw - var(--sidebar) - 690px) / 2)); padding: 92px 0 120px; }
.intro { padding: 0 0 48px; border-bottom: 1px solid var(--line); }
.intro h1 { margin: 0 0 16px; font-size: clamp(30px, 3vw, 40px); font-weight: 760; letter-spacing: -.035em; line-height: 1.14; }
.intro p { margin: 0; color: var(--muted); font-size: 16px; }
.intro strong { color: var(--text); }
.search-panel { display: grid; grid-template-columns: 190px 1fr; gap: 28px; padding: 36px 0 46px; border-bottom: 1px solid var(--line); }
.search-panel h2 { margin: 2px 0 5px; font-size: 15px; }
.search-panel p { margin: 0; color: var(--muted); font-size: 12px; }
#search .pagefind-ui__search-input { height: 42px; padding: 8px 8px 8px 34px; border: 1px solid var(--line); border-radius: 7px; color: var(--text); background: var(--panel); font-family: var(--sans); font-size: 14px; }
#search .pagefind-ui__search-clear { height: 40px; color: var(--muted); background: transparent; }
#search .pagefind-ui__result { padding: 20px 0; border-top-color: var(--line); }
#search .pagefind-ui__result-title { font-size: 14px; }
#search .pagefind-ui__result-link { color: var(--text); }
#search .pagefind-ui__result-excerpt, #search .pagefind-ui__message { color: var(--muted); font-family: var(--sans); font-size: 12px; }
#search .pagefind-ui__result-nested { padding-left: 0; }
.chapter-block { position: relative; padding: 44px 0; border-bottom: 1px solid var(--line); }
.open-chapter { position: absolute; top: 52px; right: 0; color: var(--faint); font-size: 10px; text-decoration: none; text-transform: uppercase; letter-spacing: .08em; }
.prose { color: var(--muted); }
.chapter-kicker { margin: 0 0 12px !important; color: var(--faint); font-size: 10px; font-weight: 500; letter-spacing: .04em; }
.prose > h1, .chapter-block > h1 { max-width: 16ch; margin: 0 0 34px; color: var(--text); font-size: 26px; font-weight: 700; letter-spacing: -.025em; line-height: 1.2; }
.prose h2, .chapter-block h2 { margin: 38px 0 12px; color: var(--text); font-size: 16px; font-weight: 700; line-height: 1.35; }
.prose h3, .chapter-block h3 { margin: 28px 0 10px; color: var(--text); font-size: 14px; }
.prose p, .chapter-block p { margin: 0 0 17px; }
.prose strong, .chapter-block strong { color: var(--text); }
.prose blockquote, .chapter-block blockquote { margin: 22px 0; padding: 16px 18px; border: 1px solid var(--line); border-radius: 6px; color: var(--text); background: var(--panel); }
.prose blockquote p:last-child, .chapter-block blockquote p:last-child { margin-bottom: 0; }
.prose ul, .prose ol, .chapter-block ul, .chapter-block ol { padding-left: 20px; }
.prose li, .chapter-block li { margin-bottom: 8px; }
.prose hr, .chapter-block hr { margin: 42px 0; border: 0; border-top: 1px solid var(--line); }
.search-filter { display: none; }
.chapter-pager { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 64px; padding-top: 24px; border-top: 1px solid var(--line); }
.chapter-pager a { color: var(--muted); font-size: 12px; text-decoration: none; }
.chapter-pager a:hover { color: var(--text); }
.chapter-pager small { display: block; margin-bottom: 3px; color: var(--faint); font-size: 9px; text-transform: uppercase; letter-spacing: .08em; }
.chapter-pager .next { text-align: right; }
@media (max-width: 900px) {
  .sidebar { display: none; }
  .topbar { inset: 0 0 auto 0; justify-content: space-between; padding: 0 16px; border-bottom: 1px solid var(--line); background: color-mix(in oklch, var(--bg) 95%, transparent); }
  .mobile-brand { display: block; font-size: 13px; font-weight: 700; text-decoration: none; }
  .mobile-menu { display: block; margin-right: auto; margin-left: 12px; }
  .mobile-menu summary { color: var(--muted); cursor: pointer; font-size: 11px; list-style: none; }
  .mobile-menu[open] > div { position: absolute; top: 54px; left: 12px; display: grid; width: min(360px, calc(100vw - 24px)); max-height: calc(100vh - 70px); overflow-y: auto; padding: 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); box-shadow: 0 18px 60px oklch(0% 0 0 / .35); }
  .mobile-menu a { display: grid; grid-template-columns: 24px 1fr; padding: 8px; color: var(--muted); font-size: 12px; text-decoration: none; }
  .mobile-menu a span { color: var(--faint); font-size: 10px; }
  .controls > a { display: none; }
  .main-shell { width: min(690px, calc(100% - 32px)); margin: 0 auto; padding-top: 96px; }
}
@media (max-width: 560px) {
  .intro h1 { font-size: 29px; }
  .search-panel { grid-template-columns: 1fr; gap: 16px; }
  .open-chapter { position: static; display: inline-block; margin-bottom: 20px; }
  .chapter-pager { grid-template-columns: 1fr; }
  .chapter-pager .next { text-align: left; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .theme-toggle i::after { transition: none; } }