:root, :root[data-theme="light"] {
  color-scheme: light;
  --accent: #eef2ff;
  --accent-foreground: #4338ca;
  --active: rgba(24,24,27,0.08);
  --background: #fafafa;
  --border: #e4e4e7;
  --brand: #0f766e;
  --brand-ink: #ffffff;
  --brand-soft: rgba(15,118,110,0.14);
  --card: #ffffff;
  --card-foreground: #18181b;
  --chart-1: #6366f1;
  --chart-2: #a78bfa;
  --chart-3: #38bdf8;
  --chart-4: #10b981;
  --chart-5: #fbbf24;
  --contrast: 0;
  --danger: #dc2626;
  --density: 1;
  --desk: #fafafa;
  --destructive: #dc2626;
  --destructive-foreground: #ffffff;
  --font: Inter, -apple-system, 'SF Pro Text', system-ui, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --font-mono: JetBrains Mono, Fira Code, monospace;
  --font-sans: Inter, ui-sans-serif, system-ui, sans-serif;
  --font-serif: Georgia, serif;
  --foreground: #18181b;
  --info: #3a93e6;
  --ink: #18181b;
  --ink-2: #535355;
  --ink-3: #656567;
  --input: #e4e4e7;
  --letter-spacing: 0;
  --muted: #f4f4f5;
  --muted-foreground: #71717a;
  --pill: #fefefe;
  --popover: #ffffff;
  --popover-foreground: #18181b;
  --primary: #6366f1;
  --primary-foreground: #ffffff;
  --radius: 0.625rem;
  --ring: #6366f1;
  --rule: #dbdbdc;
  --safe: #25ab3a;
  --scrim: rgba(0,0,0,0.32);
  --secondary: #f4f4f5;
  --secondary-foreground: #18181b;
  --shadow-blur: 4px;
  --shadow-color: hsl(244 50% 20% / 0.1);
  --shadow-float: 0 16px 44px rgba(0,0,0,0.18);
  --shadow-lift: 0 6px 20px rgba(0,0,0,0.12);
  --shadow-offset-x: 0px;
  --shadow-offset-y: 2px;
  --shadow-opacity: 0.12;
  --shadow-spread: 0px;
  --sheet: #f3f4f4;
  --sidebar: #f4f4f5;
  --sidebar-accent: #eef2ff;
  --sidebar-accent-foreground: #4338ca;
  --sidebar-border: #e4e4e7;
  --sidebar-foreground: #18181b;
  --sidebar-primary: #6366f1;
  --sidebar-primary-foreground: #ffffff;
  --sidebar-ring: #6366f1;
  --signal-automation: oklch(0.65 0.15 145);
  --signal-danger: oklch(0.60 0.22 28);
  --signal-full: oklch(0.55 0.18 300);
  --signal-mod: oklch(0.58 0.20 290);
  --signal-override: oklch(0.68 0.16 55);
  --signal-quick: oklch(0.60 0.15 250);
  --signal-safe: #25ab3a;
  --signal-slot-a: oklch(0.65 0.15 250);
  --signal-slot-b: oklch(0.68 0.16 55);
  --signal-warn: #dca400;
  --spacing: 0.25rem;
  --text-scale: 1;
  --title-bar: #ededed;
  --warn: #dca400;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --accent: #26243a;
  --accent-foreground: #c7d2fe;
  --active: rgba(255,255,255,0.10);
  --background: #09090b;
  --border: #27272a;
  --brand: #2dd4bf;
  --brand-ink: #04201c;
  --brand-soft: rgba(45,212,191,0.14);
  --card: #111114;
  --card-foreground: #e4e4e7;
  --chart-1: #818cf8;
  --chart-2: #a78bfa;
  --chart-3: #38bdf8;
  --chart-4: #34d399;
  --chart-5: #fbbf24;
  --contrast: 0;
  --danger: #f87171;
  --density: 1;
  --desk: #09090b;
  --destructive: #ef4444;
  --destructive-foreground: #ffffff;
  --font: Inter, -apple-system, 'SF Pro Text', system-ui, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --font-mono: JetBrains Mono, Fira Code, monospace;
  --font-sans: Inter, ui-sans-serif, system-ui, sans-serif;
  --font-serif: Georgia, serif;
  --foreground: #e4e4e7;
  --info: #3a93e6;
  --ink: #e4e4e7;
  --ink-2: #a1a1aa;
  --ink-3: #8f8f99;
  --input: #1c1c21;
  --letter-spacing: 0;
  --muted: #18181b;
  --muted-foreground: #8f8f98;
  --pill: #1a1a1f;
  --popover: #111114;
  --popover-foreground: #e4e4e7;
  --primary: #818cf8;
  --primary-foreground: #0d0a14;
  --radius: 0.625rem;
  --ring: #818cf8;
  --rule: #2b2b31;
  --safe: #25ab3a;
  --scrim: rgba(0,0,0,0.55);
  --secondary: #1c1c21;
  --secondary-foreground: #e4e4e7;
  --shadow-blur: 3px;
  --shadow-color: oklch(0 0 0);
  --shadow-float: 0 16px 44px rgba(0,0,0,0.55);
  --shadow-lift: 0 6px 20px rgba(0,0,0,0.35);
  --shadow-offset-x: 0px;
  --shadow-offset-y: 1px;
  --shadow-opacity: 0.1;
  --shadow-spread: 0px;
  --sheet: #0e0e11;
  --sidebar: #0d0d10;
  --sidebar-accent: #26243a;
  --sidebar-accent-foreground: #c7d2fe;
  --sidebar-border: #27272a;
  --sidebar-foreground: #e4e4e7;
  --sidebar-primary: #818cf8;
  --sidebar-primary-foreground: #0d0a14;
  --sidebar-ring: #818cf8;
  --signal-automation: oklch(0.65 0.15 145);
  --signal-danger: oklch(0.60 0.22 28);
  --signal-full: oklch(0.55 0.18 300);
  --signal-mod: oklch(0.58 0.20 290);
  --signal-override: oklch(0.68 0.16 55);
  --signal-quick: oklch(0.60 0.15 250);
  --signal-safe: #25ab3a;
  --signal-slot-a: oklch(0.65 0.15 250);
  --signal-slot-b: oklch(0.68 0.16 55);
  --signal-warn: #dca400;
  --spacing: 0.25rem;
  --text-scale: 1;
  --title-bar: #17171b;
  --warn: #dca400;
}
@media (prefers-color-scheme: dark) {
:root:not([data-theme="light"]) {
  color-scheme: dark;
  --accent: #26243a;
  --accent-foreground: #c7d2fe;
  --active: rgba(255,255,255,0.10);
  --background: #09090b;
  --border: #27272a;
  --brand: #2dd4bf;
  --brand-ink: #04201c;
  --brand-soft: rgba(45,212,191,0.14);
  --card: #111114;
  --card-foreground: #e4e4e7;
  --chart-1: #818cf8;
  --chart-2: #a78bfa;
  --chart-3: #38bdf8;
  --chart-4: #34d399;
  --chart-5: #fbbf24;
  --contrast: 0;
  --danger: #f87171;
  --density: 1;
  --desk: #09090b;
  --destructive: #ef4444;
  --destructive-foreground: #ffffff;
  --font: Inter, -apple-system, 'SF Pro Text', system-ui, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --font-mono: JetBrains Mono, Fira Code, monospace;
  --font-sans: Inter, ui-sans-serif, system-ui, sans-serif;
  --font-serif: Georgia, serif;
  --foreground: #e4e4e7;
  --info: #3a93e6;
  --ink: #e4e4e7;
  --ink-2: #a1a1aa;
  --ink-3: #8f8f99;
  --input: #1c1c21;
  --letter-spacing: 0;
  --muted: #18181b;
  --muted-foreground: #8f8f98;
  --pill: #1a1a1f;
  --popover: #111114;
  --popover-foreground: #e4e4e7;
  --primary: #818cf8;
  --primary-foreground: #0d0a14;
  --radius: 0.625rem;
  --ring: #818cf8;
  --rule: #2b2b31;
  --safe: #25ab3a;
  --scrim: rgba(0,0,0,0.55);
  --secondary: #1c1c21;
  --secondary-foreground: #e4e4e7;
  --shadow-blur: 3px;
  --shadow-color: oklch(0 0 0);
  --shadow-float: 0 16px 44px rgba(0,0,0,0.55);
  --shadow-lift: 0 6px 20px rgba(0,0,0,0.35);
  --shadow-offset-x: 0px;
  --shadow-offset-y: 1px;
  --shadow-opacity: 0.1;
  --shadow-spread: 0px;
  --sheet: #0e0e11;
  --sidebar: #0d0d10;
  --sidebar-accent: #26243a;
  --sidebar-accent-foreground: #c7d2fe;
  --sidebar-border: #27272a;
  --sidebar-foreground: #e4e4e7;
  --sidebar-primary: #818cf8;
  --sidebar-primary-foreground: #0d0a14;
  --sidebar-ring: #818cf8;
  --signal-automation: oklch(0.65 0.15 145);
  --signal-danger: oklch(0.60 0.22 28);
  --signal-full: oklch(0.55 0.18 300);
  --signal-mod: oklch(0.58 0.20 290);
  --signal-override: oklch(0.68 0.16 55);
  --signal-quick: oklch(0.60 0.15 250);
  --signal-safe: #25ab3a;
  --signal-slot-a: oklch(0.65 0.15 250);
  --signal-slot-b: oklch(0.68 0.16 55);
  --signal-warn: #dca400;
  --spacing: 0.25rem;
  --text-scale: 1;
  --title-bar: #17171b;
  --warn: #dca400;
}
}

/* architect-sites: the layout. Colours, fonts and radii are the theme's
   tokens (written above this sheet as CSS variables, light and dark), so
   the site follows whichever theme it was built with. */

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--site-header) + 16px);
  --site-header: 56px;
  --site-nav: 280px;
  --site-toc: 220px;
  --site-measure: 46rem;
  --site-radius: var(--radius, 8px);
  --site-sidebar: var(--sidebar, var(--muted));
  --site-sidebar-ink: var(--sidebar-foreground, var(--foreground));
  --site-hover: var(--sidebar-accent, var(--accent));
  --site-hover-ink: var(--sidebar-accent-foreground, var(--accent-foreground));
  --site-faint: var(--muted-foreground);
  --site-code-bg: var(--muted);
}

body {
  margin: 0;
  background: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif);
  font-size: 16px;
  line-height: 1.65;
}

a { color: var(--primary); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }

.site-skip {
  position: absolute; left: -999px; top: 8px; z-index: 50;
  padding: 8px 12px; border-radius: var(--site-radius);
  background: var(--primary); color: var(--primary-foreground);
}
.site-skip:focus { left: 8px; }

svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* ── the header ─────────────────────────────────────────────────────── */

.site-header {
  position: sticky; top: 0; z-index: 30;
  height: var(--site-header);
  display: flex; align-items: center; gap: 12px;
  padding: 0 16px;
  background: color-mix(in srgb, var(--background) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-brand {
  display: flex; align-items: center; gap: 8px;
  color: var(--foreground); text-decoration: none;
  font-weight: 700; letter-spacing: -0.01em; white-space: nowrap;
}
.site-mark {
  display: grid; place-items: center;
  width: 28px; height: 28px; border-radius: 7px;
  background: var(--primary); color: var(--primary-foreground);
}
.site-mark svg { width: 16px; height: 16px; stroke-width: 2.2; }

.site-icon-button {
  display: grid; place-items: center;
  width: 36px; height: 36px; padding: 0;
  border: 1px solid transparent; border-radius: var(--site-radius);
  background: transparent; color: var(--site-faint); cursor: pointer;
}
.site-icon-button:hover { background: var(--site-hover); color: var(--site-hover-ink); }
.site-icon-button:focus-visible, .site-search input:focus-visible { outline: 2px solid var(--ring); outline-offset: 1px; }
.site-menu { display: none; }

.site-header-link { color: var(--site-faint); text-decoration: none; font-size: 14px; font-weight: 500; }
.site-header-link:hover { color: var(--foreground); }

/* ── search ─────────────────────────────────────────────────────────── */

.site-search { position: relative; flex: 1; max-width: 420px; margin-left: auto; }
.site-search input {
  width: 100%; height: 36px;
  padding: 0 36px 0 34px;
  border: 1px solid var(--border); border-radius: var(--site-radius);
  background: var(--site-sidebar); color: var(--foreground);
  font: inherit; font-size: 14px;
}
.site-search input::placeholder { color: var(--site-faint); }
.site-search-icon { position: absolute; left: 10px; top: 9px; color: var(--site-faint); pointer-events: none; }
.site-search-icon svg { width: 16px; height: 16px; }
.site-search-key {
  position: absolute; right: 8px; top: 8px;
  padding: 0 6px; border: 1px solid var(--border); border-radius: 4px;
  color: var(--site-faint); font: 12px/18px var(--font-mono, ui-monospace, monospace);
}
.site-results {
  position: absolute; top: 42px; left: 0; right: 0; z-index: 40;
  max-height: min(70vh, 560px); overflow: auto;
  padding: 6px; margin: 0;
  border: 1px solid var(--border); border-radius: calc(var(--site-radius) + 2px);
  background: var(--popover, var(--card)); color: var(--popover-foreground, var(--card-foreground));
  box-shadow: 0 16px 40px rgb(0 0 0 / 0.18);
}
.site-results[hidden] { display: none; }
.site-result {
  display: block; padding: 8px 10px; border-radius: var(--site-radius);
  color: inherit; text-decoration: none;
}
.site-result[aria-selected="true"], .site-result:hover { background: var(--site-hover); color: var(--site-hover-ink); }
.site-result-title { display: block; font-weight: 600; font-size: 14px; }
.site-result-where { color: var(--site-faint); font-weight: 400; }
.site-result-text { display: block; color: var(--site-faint); font-size: 13px; line-height: 1.45; margin-top: 2px; }
.site-result mark { background: color-mix(in srgb, var(--primary) 22%, transparent); color: inherit; border-radius: 2px; }
.site-results-empty { padding: 12px; color: var(--site-faint); font-size: 14px; }

/* ── the body: navigator, page, contents ────────────────────────────── */

.site-body {
  display: grid;
  grid-template-columns: var(--site-nav) minmax(0, 1fr) var(--site-toc);
  min-height: calc(100vh - var(--site-header));
}

.site-nav {
  position: sticky; top: var(--site-header);
  height: calc(100vh - var(--site-header));
  overflow-y: auto; overscroll-behavior: contain;
  padding: 12px 8px 40px;
  background: var(--site-sidebar); color: var(--site-sidebar-ink);
  border-right: 1px solid var(--border);
  font-size: 14px;
}

.site-tree, .site-tree ul { list-style: none; margin: 0; padding: 0; }
.site-tree ul { margin-left: 15px; padding-left: 6px; border-left: 1px solid var(--border); }
.site-tree-row {
  display: flex; align-items: center; gap: 6px;
  min-height: 30px; padding: 3px 8px;
  border-radius: 6px;
  color: inherit; text-decoration: none; cursor: pointer;
  list-style: none;
}
.site-tree-row::-webkit-details-marker { display: none; }
.site-tree-row:hover { background: var(--site-hover); color: var(--site-hover-ink); }
.site-tree-row.is-active { background: var(--site-hover); color: var(--site-hover-ink); font-weight: 600; }
.site-tree-row.is-active .site-tree-icon { color: var(--primary); }
.site-tree-icon { display: grid; place-items: center; color: var(--site-faint); flex: none; }
.site-tree-icon svg { width: 16px; height: 16px; }
.site-tree-label { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: inherit; text-decoration: none; }
.site-tree-count { color: var(--site-faint); font-size: 12px; font-variant-numeric: tabular-nums; }
.site-tree-chevron {
  width: 14px; height: 14px; flex: none; margin-left: -4px;
  border-right: 1.8px solid var(--site-faint); border-bottom: 1.8px solid var(--site-faint);
  transform: scale(0.45) rotate(-45deg); transition: transform 120ms ease;
}
details[open] > summary > .site-tree-chevron { transform: scale(0.45) rotate(45deg); }
.site-tree-home { margin-bottom: 4px; }

.site-main { min-width: 0; padding: 32px 48px 0; }
.site-article { max-width: var(--site-measure); margin: 0 auto; }

.site-crumbs { display: flex; flex-wrap: wrap; gap: 6px; font-size: 13px; color: var(--site-faint); margin-bottom: 10px; }
.site-crumbs a { color: inherit; text-decoration: none; }
.site-crumbs a:hover { color: var(--foreground); }

.site-title { font-size: clamp(1.9rem, 1.4rem + 1.8vw, 2.5rem); line-height: 1.15; letter-spacing: -0.025em; margin: 0 0 10px; }
.site-lede { font-size: 1.13rem; color: var(--site-faint); margin: 0 0 14px; }
.site-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13px; color: var(--site-faint); margin-bottom: 28px; }

.site-tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 1px 9px; border-radius: 999px;
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  color: var(--primary); font-size: 13px; font-weight: 500; text-decoration: none;
}
.site-tag:hover { background: color-mix(in srgb, var(--primary) 20%, transparent); }
.site-tag-count { color: var(--site-faint); font-variant-numeric: tabular-nums; }
.site-tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }

/* ── prose ──────────────────────────────────────────────────────────── */

.site-prose > :first-child { margin-top: 0; }
.site-prose h2, .site-prose h3, .site-prose h4 { line-height: 1.3; letter-spacing: -0.015em; position: relative; }
.site-prose h2 { font-size: 1.5rem; margin: 2.2em 0 0.6em; padding-top: 0.6em; border-top: 1px solid var(--border); }
.site-prose h3 { font-size: 1.2rem; margin: 1.8em 0 0.5em; }
.site-prose h4 { font-size: 1.02rem; margin: 1.5em 0 0.4em; }
.site-anchor { margin-left: 8px; color: var(--site-faint); text-decoration: none; opacity: 0; font-weight: 400; }
.site-prose :is(h2, h3, h4):hover .site-anchor, .site-anchor:focus { opacity: 1; }
.site-prose p, .site-prose ul, .site-prose ol { margin: 0 0 1.1em; }
.site-prose li + li { margin-top: 0.25em; }
.site-prose li > ul, .site-prose li > ol { margin: 0.25em 0 0; }
.site-prose strong { font-weight: 650; }
.site-prose hr { border: 0; border-top: 1px solid var(--border); margin: 2em 0; }
.site-prose img { max-width: 100%; height: auto; border-radius: var(--site-radius); }
.site-prose blockquote {
  margin: 0 0 1.1em; padding: 2px 16px;
  border-left: 3px solid var(--border); color: var(--site-faint);
}
.site-prose blockquote[class*="markdown-alert"] {
  border-left-color: var(--primary); color: inherit;
  background: color-mix(in srgb, var(--primary) 7%, transparent);
  border-radius: 0 var(--site-radius) var(--site-radius) 0; padding: 10px 16px;
}
.site-link { text-decoration-style: solid; }
.site-broken-link {
  color: var(--destructive, #d33); text-decoration: underline wavy;
  text-decoration-thickness: 1px; cursor: help;
}

.site-prose code {
  font-family: var(--font-mono, ui-monospace, "SF Mono", Menlo, monospace);
  font-size: 0.87em;
  padding: 0.12em 0.36em; border-radius: 5px;
  background: var(--site-code-bg);
}
.site-code {
  position: relative;
  margin: 0 0 1.3em; padding: 14px 16px;
  overflow-x: auto;
  border: 1px solid var(--border); border-radius: var(--site-radius);
  background: var(--site-code-bg);
  font-size: 13.5px; line-height: 1.55;
}
.site-code code { padding: 0; background: none; font-size: inherit; }
.site-code[data-lang]::after {
  content: attr(data-lang);
  position: absolute; top: 6px; right: 10px;
  font: 11px var(--font-mono, ui-monospace, monospace);
  color: var(--site-faint); text-transform: lowercase;
}

.site-table { overflow-x: auto; margin: 0 0 1.3em; border: 1px solid var(--border); border-radius: var(--site-radius); }
.site-table table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.site-table th, .site-table td { padding: 8px 12px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--border); }
.site-table tr:last-child td { border-bottom: 0; }
.site-table th { background: var(--site-sidebar); font-weight: 600; }

/* A base's views (```base). */
.site-base { margin: 0 0 1.3em; }
.site-base figcaption { font-size: 13px; font-weight: 600; color: var(--site-faint); margin: 0 0 6px; }
.site-base .site-table { margin: 0; }
.site-base-group th { background: var(--site-sidebar); font-size: 13px; color: var(--site-faint); }
.site-base-cards, .site-base-list { list-style: none; margin: 0; padding: 0; }
.site-base-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px; }
.site-base-cards li { display: flex; flex-direction: column; gap: 2px; padding: 10px 12px; border: 1px solid var(--border); border-radius: var(--site-radius); background: var(--card); font-size: 14px; }
.site-base-list li { display: flex; flex-wrap: wrap; gap: 4px 12px; padding: 6px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.site-base-name { font-weight: 600; }
.site-base-value { color: var(--site-faint); }
.site-base-value b { font-weight: 500; color: var(--foreground); }
.site-base-empty { color: var(--site-faint); font-size: 14px; }

/* A block an extension drew. */
/* A drawing wider than the page (a chart) scrolls inside its own box. */
.site-block { margin: 0 0 1.3em; max-width: 100%; overflow-x: auto; }
/* A block's own SVG is a drawing, not one of the site's icons (the `svg`
   rule above): its size from its attributes, its ink the page's. */
.site-block svg { width: auto; height: auto; max-width: none; fill: currentColor; stroke: none; stroke-width: 1; stroke-linecap: butt; stroke-linejoin: miter; }
.site-block-failed .site-block-why { color: var(--destructive, #d33); font-size: 14px; margin: 0 0 6px; }

/* ── listings, links here, previous and next ────────────────────────── */

.site-listing { margin-top: 2.5em; }
.site-listing-title { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--site-faint); margin: 0 0 10px; }
.site-listing ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 10px; }
.site-listing a {
  display: block; height: 100%; padding: 12px 14px;
  border: 1px solid var(--border); border-radius: var(--site-radius);
  background: var(--card); color: var(--card-foreground); text-decoration: none;
  transition: border-color 120ms ease, transform 120ms ease;
}
.site-listing a:hover { border-color: var(--primary); }
.site-listing-name { display: block; font-weight: 600; }
.site-listing-line { display: block; margin-top: 4px; font-size: 13.5px; line-height: 1.45; color: var(--site-faint); }

.site-prevnext { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 3em 0 0; }
.site-prevnext a {
  display: flex; flex-direction: column; gap: 2px; padding: 12px 14px;
  border: 1px solid var(--border); border-radius: var(--site-radius);
  text-decoration: none; color: var(--foreground);
}
.site-prevnext a:hover { border-color: var(--primary); }
.site-prevnext span { font-size: 12px; color: var(--site-faint); }
.site-next { grid-column: 2; text-align: right; }

.site-footer {
  max-width: var(--site-measure); margin: 64px auto 0; padding: 20px 0 40px;
  display: flex; gap: 8px; flex-wrap: wrap;
  border-top: 1px solid var(--border); color: var(--site-faint); font-size: 13px;
}

/* ── on this page ───────────────────────────────────────────────────── */

.site-toc {
  position: sticky; top: var(--site-header);
  height: calc(100vh - var(--site-header));
  overflow-y: auto; padding: 32px 16px 40px 0;
  font-size: 13px;
}
.site-toc-title { margin: 0 0 8px; font-weight: 600; color: var(--foreground); }
.site-toc ul { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--border); }
.site-toc li a {
  display: block; padding: 4px 0 4px 12px; margin-left: -1px;
  border-left: 2px solid transparent;
  color: var(--site-faint); text-decoration: none; line-height: 1.4;
}
.site-toc li.is-sub a { padding-left: 24px; }
.site-toc li a:hover { color: var(--foreground); }
.site-toc li a.is-current { color: var(--primary); border-left-color: var(--primary); }

.site-scrim { display: none; }

/* ── narrower: no contents rail ─────────────────────────────────────── */

@media (max-width: 1180px) {
  .site-body { grid-template-columns: var(--site-nav) minmax(0, 1fr); }
  .site-toc { display: none; }
}

/* ── a phone: the navigator slides in ───────────────────────────────── */

@media (max-width: 820px) {
  html { --site-header: 52px; }
  body { font-size: 16.5px; }
  .site-header { gap: 8px; padding: 0 10px; }
  .site-menu { display: grid; }
  .site-brand span:last-child { display: none; }
  .site-header-link { display: none; }
  .site-search-key { display: none; }
  .site-search input { padding-right: 10px; }
  .site-body { display: block; }
  .site-nav {
    position: fixed; z-index: 35; top: var(--site-header); left: 0; bottom: 0;
    width: min(86vw, 320px); height: auto;
    transform: translateX(-102%); transition: transform 180ms ease;
    box-shadow: 0 0 40px rgb(0 0 0 / 0.25);
  }
  .site-tree-row { min-height: 40px; }
  body.site-nav-open .site-nav { transform: none; }
  body.site-nav-open .site-scrim {
    display: block; position: fixed; inset: var(--site-header) 0 0 0; z-index: 34;
    background: rgb(0 0 0 / 0.35);
  }
  body.site-nav-open { overflow: hidden; }
  .site-main { padding: 22px 18px 0; }
  .site-prose h2 { font-size: 1.35rem; }
  .site-code { margin-left: -18px; margin-right: -18px; border-radius: 0; border-left: 0; border-right: 0; }
  .site-prevnext { grid-template-columns: 1fr; }
  .site-next { grid-column: 1; }
  .site-results { position: fixed; top: calc(var(--site-header) + 4px); left: 8px; right: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

/* The player (#511): media on the page, synced lyrics, the queue's bar. */
.site-media { display: block; width: 100%; margin: 0 0 1.3em; }
video.site-media { max-height: 70vh; background: #000; border-radius: 6px; }
.site-lyrics { list-style: none; margin: 0 0 1.3em; padding: 6px 0; max-height: 60vh; overflow: auto; position: relative; }
.site-lyrics li { margin: 0; }
.site-lyric { all: unset; display: block; cursor: pointer; padding: 3px 10px; border-radius: 6px; color: var(--site-faint); line-height: 1.5; }
.site-lyric:hover { background: var(--site-code-bg); }
.site-lyric:focus-visible { outline: 2px solid var(--ring, currentColor); }
.site-lyrics [aria-current="time"] .site-lyric { color: var(--foreground); font-weight: 650; background: var(--site-code-bg); }
[data-follow-playhead] [data-at][aria-current="time"] { scroll-margin: 40px; }
/* An SVG that follows (a chart's transparent rect per bar): the bar at
   the playhead is filled from the theme, a bar under the pointer hinted. */
[data-follow-playhead] svg [data-at], svg[data-follow-playhead] [data-at] { cursor: pointer; }
[data-follow-playhead] svg [data-at]:hover, svg[data-follow-playhead] [data-at]:hover { fill: var(--primary, var(--accent)); fill-opacity: .12; }
[data-follow-playhead] svg [data-at][aria-current="time"], svg[data-follow-playhead] [data-at][aria-current="time"] { fill: var(--primary, var(--accent)); fill-opacity: .28; }
body.site-has-player { padding-bottom: 64px; }
.site-player { position: fixed; left: 0; right: 0; bottom: 0; z-index: 50; display: flex; align-items: center; gap: 8px; padding: 8px 16px; background: var(--background); color: var(--foreground); border-top: 1px solid var(--border, #8884); font: 14px/1.3 system-ui, sans-serif; }
.site-player button { font: inherit; min-width: 36px; height: 36px; border-radius: 18px; border: 1px solid var(--border, #8886); background: transparent; color: inherit; cursor: pointer; }
.site-player-what { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.site-player-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: inherit; font-weight: 600; }
.site-player-note { font-size: 12px; opacity: .75; }
.site-player-time { font-variant-numeric: tabular-nums; opacity: .8; }
.site-player-follow { display: flex; gap: 4px; align-items: center; font-size: 12px; }
.site-player-audio { display: none; }
@media (max-width: 520px) { .site-player-follow { display: none; } }