/* ============================================================
   INTO MarCom — Event Strategy Playbook
   Cool sheet and graphite first. Light-first; dark is a band
   surface, never a page theme.

   Tokens, type roles and primitives are copied verbatim from the
   governed Consulting site:
     into-consulting-site:src/styles/tokens.css
     into-consulting-site:src/styles/global.css
   Header/footer/hero grammar follows Header.astro, Footer.astro
   and ArticlesPage.astro. Progress grammar follows
   docs/site/page-framework.md §5.

   Deliberately does NOT load /styles/chrome.css: that sheet is
   built on the superseded warm-cream palette (#fbfaf7), which
   creative-vision.md §8 lists as an anti-pattern.

   GENERATED by scripts/gen-events-site.py — edit PLAYBOOK_CSS
   there, not this file.
   ============================================================ */

/* ---- Tokens: verbatim from into-consulting-site/src/styles/tokens.css ---- */
:root {
  color-scheme: light;

  --paper: #fafafb;
  --paper-raised: #f1f2f4;
  --paper-muted: #e2e4e8;
  --ink: #161d21;
  --ink-secondary: #384149;
  --ink-muted: #5c6670;
  --ink-faint: #707b85;
  --text-inverse: #f4f6f7;

  --blueprint: #0f1518;
  --blueprint-raised: #161d21;
  --blueprint-text: #eceef0;
  --blueprint-text-muted: #98a2ac;

  --stage-gradient: linear-gradient(160deg, #10171c 0%, #0f1518 45%, #131c22 100%);
  --stage-glow: radial-gradient(120% 90% at 72% 30%, rgba(79, 181, 184, 0.14), transparent 58%);

  --petrol: #1a4a4d;
  --petrol-hover: #103436;
  --petrol-bright: #4fb5b8;
  --petrol-bright-hover: #6bc8cc;
  --petrol-soft: #e4eeee;
  --petrol-outline: rgba(26, 74, 77, 0.42);

  --saffron: #ffc64f;
  --saffron-soft: #fff1c7;
  --saffron-ink: #6f4d00;

  --hairline: #d7dbe0;
  --hairline-strong: #c3c9cf;
  --hairline-width: 1px;

  --radius-small: 0.375rem;
  --radius-card: 0.4375rem;
  --radius-panel: 0.5rem;
  --radius-pill: 999rem;

  --font-display: "Newsreader", Georgia, serif;
  --font-sans: "Lexend", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --type-display: clamp(2.5rem, calc(2rem + 2.05vw), 3.75rem);
  --type-h2: clamp(2rem, calc(1.6rem + 1.3vw), 2.75rem);
  --type-h3: clamp(1.375rem, calc(1.15rem + 0.7vw), 1.75rem);
  --type-feature: clamp(1.25rem, calc(0.95rem + 0.65vw), 1.5rem);
  --type-metric: clamp(2.5rem, calc(2.2rem + 1.1vw), 3.125rem);

  --leading-display: 0.94;
  --leading-heading: 1.04;
  --leading-subheading: 1.18;
  --leading-body: 1.58;
  --leading-caption: 1.4;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  --content-max: 72.5rem;
  --gutter: clamp(1rem, 4vw, 3rem);
  --control-min: 2.75rem;
  --band-gap: clamp(3.5rem, 5vw + 2rem, 10rem);

  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --ease-editorial: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-quick: 180ms;
  --duration-measured: 260ms;
  --duration-slow: 700ms;
}

/* ---- Base: from global.css ---- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, picture, svg, video { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.1;
  overflow-wrap: break-word;
}

p { overflow-wrap: break-word; }

a {
  color: var(--petrol);
  text-decoration-thickness: from-font;
  text-underline-offset: 0.15em;
}

:focus-visible { outline: 2px solid var(--petrol); outline-offset: 2px; }

.pb-hero :focus-visible,
.site-footer :focus-visible,
.site-header.is-over-dark :focus-visible {
  outline-color: var(--blueprint-text);
  outline-offset: 3px;
  box-shadow: 0 0 0 5px rgba(15, 21, 24, 0.88);
}

::selection { background: var(--petrol-soft); }

/* ---- Type roles: verbatim from tokens.css ---- */
.kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  display: inline-block;
  padding-bottom: 0.625rem;
  border-bottom: var(--hairline-width) solid var(--hairline);
}

.page-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--type-display);
  line-height: var(--leading-heading);
  color: var(--ink);
  max-width: 18em;
  text-wrap: balance;
}

.lead {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: clamp(1.0625rem, 0.4vw + 1rem, 1.25rem);
  line-height: var(--leading-body);
  color: var(--ink-secondary);
  max-width: 62ch;
}

/* ---- Primitives: from global.css ----
   Copied complete and left complete on purpose. Some (.btn-secondary-outline,
   .link-tertiary, .meta-mono, .hairline, .sr-only) are unused by this surface
   today; they stay so the next edit reaches for the governed primitive instead
   of re-deriving one. */
.container {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  background: var(--petrol);
  color: var(--text-inverse);
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.875rem;
  line-height: 1.2;
  padding: 0.6875rem 1.375rem;
  border: 0;
  border-radius: var(--radius-small);
  text-decoration: none;
  cursor: pointer;
  transition:
    background-color var(--duration-quick) var(--ease-standard),
    color var(--duration-quick) var(--ease-standard),
    transform var(--duration-quick) var(--ease-standard);
}
.btn-primary:hover { background: var(--petrol-hover); }
.btn-primary:active { background: var(--petrol-hover); transform: scale(0.98); }

.btn-secondary-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.625rem 1.25rem;
  border: 1px solid currentColor;
  border-radius: var(--radius-small);
  color: var(--petrol);
  background: transparent;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 450;
  line-height: 1.2;
  text-decoration: none;
  transition:
    color var(--duration-quick) var(--ease-standard),
    background-color var(--duration-quick) var(--ease-standard),
    border-color var(--duration-quick) var(--ease-standard),
    transform var(--duration-quick) var(--ease-standard);
}
.btn-secondary-outline:hover { color: var(--text-inverse); background: var(--petrol); }
.btn-secondary-outline:active { color: var(--text-inverse); background: var(--petrol-hover); transform: scale(0.98); }

.btn-primary:is(:disabled, [aria-disabled="true"]),
.btn-secondary-outline:is(:disabled, [aria-disabled="true"]) {
  color: var(--ink-muted);
  background: var(--paper-muted);
  border-color: var(--hairline);
  cursor: not-allowed;
  opacity: 0.7;
  pointer-events: none;
  transform: none;
}

.link-tertiary {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 0.9375rem;
  color: var(--petrol);
  text-decoration: none;
  transition:
    color var(--duration-quick) var(--ease-standard),
    transform var(--duration-quick) var(--ease-standard);
}
.link-tertiary:hover { text-decoration: underline; text-underline-offset: 0.2em; }
.link-tertiary:active { color: var(--petrol-hover); transform: translateX(0.0625rem) scale(0.99); }

@media (hover: hover) and (pointer: fine) {
  .btn-primary:hover, .btn-secondary-outline:hover { transform: translateY(-0.125rem); }
  .link-tertiary:hover { transform: translateX(0.125rem); }
}

.pill {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
  border: var(--hairline-width) solid var(--hairline);
  border-radius: var(--radius-pill);
  padding: 0.25rem 0.625rem;
  text-decoration: none;
  white-space: nowrap;
}

.chip-signal {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--saffron-ink);
  background: var(--saffron-soft);
  border-radius: var(--radius-pill);
  padding: 0.25rem 0.625rem;
  white-space: nowrap;
}

.meta-mono {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--ink-muted);
}

.hairline { border: 0; border-top: var(--hairline-width) solid var(--hairline); }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* ---- Skip link + header: Header.astro grammar ---- */
.skip-link {
  position: fixed;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 100;
  display: inline-flex;
  align-items: center;
  min-height: var(--control-min);
  padding: 0 1rem;
  background: var(--petrol);
  color: var(--text-inverse);
  border-radius: var(--radius-small);
  font-size: 0.8125rem;
  text-decoration: none;
  transform: translateY(-200%);
  transition: transform var(--duration-quick) var(--ease-standard);
}
.skip-link:focus-visible { transform: translateY(0); }

.site-header {
  position: fixed;
  top: 1rem;
  left: 50%;
  z-index: 50;
  width: min(calc(100% - 2rem), var(--content-max));
  color: var(--ink);
  background: color-mix(in srgb, var(--paper) 98%, transparent);
  border: 1px solid color-mix(in srgb, var(--hairline) 82%, transparent);
  border-radius: var(--radius-panel);
  box-shadow: 0 0.5rem 2rem rgba(15, 21, 24, 0.06);
  backdrop-filter: blur(18px) saturate(1.08);
  -webkit-backdrop-filter: blur(18px) saturate(1.08);
  transform: translateX(-50%);
  transition:
    color var(--duration-measured) var(--ease-editorial),
    background var(--duration-measured) var(--ease-editorial),
    border-color var(--duration-measured) var(--ease-editorial),
    box-shadow var(--duration-measured) var(--ease-editorial);
}

.site-header.is-over-dark {
  color: var(--blueprint-text);
  background: var(--blueprint);
  border-color: rgba(236, 238, 240, 0.18);
  box-shadow: 0 0.75rem 2.5rem rgba(0, 0, 0, 0.18);
}

.header-row {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 2vw, 1.5rem);
  min-height: 3.75rem;
  padding-inline: clamp(0.875rem, 2vw, 1.25rem);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: currentColor;
  text-decoration: none;
  flex-shrink: 0;
}
.wordmark-mark { width: 1.375rem; height: 1.375rem; color: currentColor; }
.wordmark-mark svg { width: 100%; height: 100%; }
.wordmark-name {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.8125rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.wordmark-rule {
  width: 1px; height: 0.875rem;
  background: currentColor;
  opacity: 0.32;
}
.wordmark-product {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: 0.875rem;
  opacity: 0.82;
}

.header-nav { margin-left: auto; }
.nav-list {
  display: flex;
  gap: clamp(0.25rem, 0.7vw, 0.625rem);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: var(--control-min);
  padding-inline: 0.625rem;
  color: var(--ink-secondary);
  background: transparent;
  border-radius: var(--radius-small);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 380;
  text-decoration: none;
  white-space: nowrap;
  transition:
    color var(--duration-quick) var(--ease-standard),
    background-color var(--duration-quick) var(--ease-standard),
    transform var(--duration-quick) var(--ease-standard);
}
.nav-link:hover, .nav-link:focus-visible { color: var(--ink); background: var(--petrol-soft); }
.nav-link:active { background: var(--paper-muted); transform: scale(0.98); }
.nav-link[aria-current="page"] { color: var(--petrol); background: var(--petrol-soft); }

.site-header.is-over-dark .nav-link { color: rgba(236, 238, 240, 0.84); }
.site-header.is-over-dark .nav-link:hover,
.site-header.is-over-dark .nav-link:focus-visible,
.site-header.is-over-dark .nav-link[aria-current="page"] {
  color: var(--blueprint-text);
  background: rgba(79, 181, 184, 0.16);
}
.site-header.is-over-dark .btn-primary { background: var(--petrol-bright); color: var(--blueprint); }
.site-header.is-over-dark .btn-primary:hover { background: var(--petrol-bright-hover); }

.header-cta { flex-shrink: 0; margin-left: auto; }

/* ---- Hero band: ArticlesPage.astro staged-dark pattern ----
   Type-only. No scene asset exists for this surface and none is
   fabricated (framework §7: every asset lands publication-held). */
.pb-hero {
  position: relative;
  color: var(--blueprint-text);
  background: var(--stage-glow), var(--stage-gradient);
  padding-block: clamp(8.5rem, 16vh, 11rem) clamp(3rem, 6vw, 4.5rem);
  overflow: hidden;
}
.pb-hero .kicker { color: var(--blueprint-text-muted); border-bottom-color: rgba(236, 238, 240, 0.22); }
.pb-hero .page-title { color: var(--blueprint-text); }
.pb-hero .lead { color: rgba(236, 238, 240, 0.82); }
.pb-hero a { color: var(--petrol-bright); }

.pb-hero-grid { display: grid; gap: var(--space-5); }
.pb-hero-heading { display: grid; gap: var(--space-4); justify-items: start; }

.pb-register {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
  margin-top: var(--space-3);
  padding-top: var(--space-4);
  border-top: var(--hairline-width) solid rgba(236, 238, 240, 0.16);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blueprint-text-muted);
}
.pb-register b { display: block; margin-top: 0.25rem; font-weight: 400; color: var(--blueprint-text); letter-spacing: 0.04em; }
.pb-register .chip-signal { text-transform: none; letter-spacing: 0.04em; }

/* ---- Shell: contents rail + reading column ----
   NEW COMPONENT. The site has no documentation sidebar; its pages
   are single-argument films. Built only from existing primitives:
   hairline structure, nav-link states, mono group labels. */
.pb-shell {
  display: grid;
  grid-template-columns: 15rem minmax(0, 1fr);
  gap: clamp(2rem, 4vw, 4rem);
  align-items: start;
  padding-block: clamp(2.5rem, 5vw, 4rem) var(--band-gap);
}

.pb-rail {
  position: sticky;
  top: 6rem;
  max-height: calc(100vh - 8rem);
  overflow-y: auto;
  padding-right: var(--space-4);
  border-right: var(--hairline-width) solid var(--hairline);
  scrollbar-width: thin;
}
.pb-rail-group {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: var(--space-5) 0 var(--space-2);
}
.pb-rail-group:first-child { margin-top: 0; }
.pb-rail ul { list-style: none; margin: 0 0 var(--space-1); padding: 0; }
.pb-rail a {
  display: block;
  padding: 0.3125rem 0.625rem;
  color: var(--ink-secondary);
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius-small) var(--radius-small) 0;
  font-size: 0.8125rem;
  line-height: 1.35;
  text-decoration: none;
  transition:
    color var(--duration-quick) var(--ease-standard),
    background-color var(--duration-quick) var(--ease-standard),
    border-color var(--duration-quick) var(--ease-standard);
}
.pb-rail a:hover, .pb-rail a:focus-visible { color: var(--ink); background: var(--petrol-soft); }
.pb-rail a:active { background: var(--paper-muted); }
.pb-rail a[aria-current="page"] {
  color: var(--petrol);
  background: var(--petrol-soft);
  border-left-color: var(--petrol);
  font-weight: 400;
}

.pb-jump { display: none; margin-bottom: var(--space-6); }
.pb-jump-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: var(--space-2);
}
.pb-jump select {
  width: 100%;
  min-height: var(--control-min);
  padding: 0 0.75rem;
  color: var(--ink);
  background: var(--paper-raised);
  border: var(--hairline-width) solid var(--hairline);
  border-radius: var(--radius-small);
  font-size: 0.875rem;
}

.pb-doc { min-width: 0; }

/* ---- Prose ---- */
.prose { max-width: none; }
.prose > p, .prose > ul, .prose > ol, .prose > h2, .prose > h3, .prose > h4,
.prose > blockquote { max-width: 68ch; }
.prose h2 {
  font-size: var(--type-h3);
  line-height: var(--leading-heading);
  margin: var(--space-8) 0 var(--space-4);
  padding-top: var(--space-5);
  border-top: var(--hairline-width) solid var(--hairline);
  scroll-margin-top: 6rem;
  text-wrap: balance;
}
.prose h2:first-child,
.pb-toc + h2 { margin-top: var(--space-6); padding-top: 0; border-top: 0; }
.prose h2:first-child { margin-top: 0; }
.prose h3 {
  font-size: var(--type-feature);
  line-height: var(--leading-subheading);
  margin: var(--space-6) 0 var(--space-3);
  scroll-margin-top: 6rem;
}
.prose h4 {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--ink-secondary);
  margin: var(--space-5) 0 var(--space-2);
}
.prose p { margin: 0 0 var(--space-4); line-height: var(--leading-body); color: var(--ink-secondary); max-width: 68ch; }
.prose ul, .prose ol { margin: 0 0 var(--space-4); padding-left: 1.25rem; color: var(--ink-secondary); }
.prose li { margin: 0 0 var(--space-2); line-height: var(--leading-body); }
.prose li > ul, .prose li > ol { margin: var(--space-2) 0 var(--space-1); }
.prose strong { font-weight: 500; color: var(--ink); }
.prose code {
  font-family: var(--font-mono);
  font-size: 0.8125em;
  color: var(--ink-secondary);
  background: var(--paper-raised);
  border: var(--hairline-width) solid var(--hairline);
  padding: 0.05em 0.3em;
  border-radius: var(--radius-small);
}
.prose a code { color: inherit; }
.prose pre {
  padding: var(--space-4) var(--space-5);
  background: var(--blueprint);
  color: var(--blueprint-text);
  border-radius: var(--radius-card);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.6;
}
.prose pre code { background: none; border: 0; padding: 0; color: inherit; font-size: inherit; }
.prose hr { border: 0; border-top: var(--hairline-width) solid var(--hairline); margin: var(--space-6) 0; }

.pb-note {
  margin: 0 0 var(--space-5);
  padding: var(--space-4) var(--space-5);
  background: var(--paper-raised);
  border-left: 2px solid var(--petrol);
  font-size: 0.9375rem;
  color: var(--ink-secondary);
}
.pb-note > :last-child { margin-bottom: 0; }

/* ---- Tables: evidence as ornament ---- */
.pb-scroll { overflow-x: auto; margin: 0 0 var(--space-5); -webkit-overflow-scrolling: touch; }
.pb-scroll table {
  width: 100%;
  min-width: 34rem;
  border-collapse: collapse;
  font-size: 0.875rem;
  line-height: var(--leading-caption);
  font-variant-numeric: tabular-nums;
}
.pb-scroll th {
  text-align: left;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  padding: 0 var(--space-4) var(--space-2) 0;
  border-bottom: var(--hairline-width) solid var(--hairline-strong);
  vertical-align: bottom;
}
.pb-scroll td {
  padding: var(--space-3) var(--space-4) var(--space-3) 0;
  border-bottom: var(--hairline-width) solid var(--hairline);
  vertical-align: top;
  color: var(--ink-secondary);
}
.pb-scroll th:last-child, .pb-scroll td:last-child { padding-right: 0; }
.pb-blank { color: var(--ink-faint); }

/* Evidence labels (research foundations). A stable box so the four glyphs
   sit on the baseline consistently across platforms; saffron marks the
   caution, which is exactly what saffron is for. */
.pb-evidence {
  display: inline-block;
  width: 1.1em;
  font-family: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji",
    var(--font-sans);
  font-size: 0.9em;
  line-height: 1;
  text-align: center;
  vertical-align: -0.05em;
  font-style: normal;
}
.pb-evidence.is-caution { color: var(--saffron-ink); }
.pb-dim { color: var(--ink-muted); font-size: 0.75rem; }

/* ---- On-page contents ---- */
.pb-toc {
  margin: 0 0 var(--space-7);
  padding-left: var(--space-4);
  border-left: var(--hairline-width) solid var(--hairline);
}
.pb-toc b {
  display: block;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: var(--space-2);
}
.pb-toc ul { list-style: none; margin: 0; padding: 0; columns: 2; column-gap: var(--space-6); }
.pb-toc li { margin: 0 0 0.375rem; font-size: 0.8125rem; break-inside: avoid; }
.pb-toc a { color: var(--ink-secondary); text-decoration: none; }
.pb-toc a:hover { color: var(--petrol); text-decoration: underline; text-underline-offset: 0.2em; }

/* ---- Chapter meta: mono evidence line, not pills ---- */
.pb-chapter-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4) var(--space-7);
  margin: 0 0 var(--space-7);
  padding-bottom: var(--space-4);
  border-bottom: var(--hairline-width) solid var(--hairline);
}
.pb-chapter-meta > div { display: grid; gap: 0.25rem; }
.pb-meta-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.pb-meta-value { font-size: 0.875rem; color: var(--ink); }
.pb-meta-value a { text-decoration: none; }
.pb-meta-value a:hover { text-decoration: underline; text-underline-offset: 0.2em; }

/* ---- Bands ---- */
.pb-band { padding-block: 0 0; margin: 0 0 var(--band-gap); }
.pb-band:last-child { margin-bottom: 0; }
.pb-band-head { margin: 0 0 var(--space-5); }
.pb-band-head h2 {
  font-size: var(--type-h3);
  line-height: var(--leading-heading);
  margin: 0 0 var(--space-3);
  scroll-margin-top: 6rem;
  text-wrap: balance;
}
.pb-band-head .kicker { margin-bottom: var(--space-4); }
.pb-band-lead { max-width: 62ch; font-size: 0.9375rem; line-height: var(--leading-body); color: var(--ink-secondary); }

/* ---- Entry list: hairline rows, not cards ---- */
.pb-entries { list-style: none; margin: 0; padding: 0; border-top: var(--hairline-width) solid var(--hairline); }
.pb-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: var(--space-3) var(--space-5);
  padding: var(--space-4) 0;
  border-bottom: var(--hairline-width) solid var(--hairline);
  color: inherit;
  text-decoration: none;
  transition: background-color var(--duration-quick) var(--ease-standard);
}
.pb-entry:hover, .pb-entry:focus-visible { background: var(--paper-raised); }
.pb-entry-q { font-family: var(--font-display); font-size: var(--type-feature); line-height: var(--leading-subheading); color: var(--ink); }
.pb-entry-why { grid-column: 1; font-size: 0.875rem; color: var(--ink-muted); line-height: var(--leading-caption); }
.pb-entry-go {
  grid-row: 1 / span 2;
  grid-column: 2;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--petrol);
  white-space: nowrap;
}
.pb-entry:hover .pb-entry-go { text-decoration: underline; text-underline-offset: 0.25em; }

/* ---- Lifecycle rail: mono pills are the entity identity here ---- */
.pb-lifecycle { display: flex; flex-wrap: wrap; align-items: center; gap: 0.375rem; list-style: none; margin: 0 0 var(--space-4); padding: 0; }
.pb-lifecycle li { display: flex; align-items: center; gap: 0.375rem; }
.pb-lifecycle li:not(:last-child)::after { content: "→"; color: var(--ink-faint); font-size: 0.8125rem; }

/* ---- Doctrine: numbered editorial rows ---- */
.pb-doctrine { max-width: none; }
.pb-doctrine ol {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: doctrine;
  border-top: var(--hairline-width) solid var(--hairline);
}
.pb-doctrine li {
  counter-increment: doctrine;
  position: relative;
  margin: 0;
  padding: var(--space-4) 0 var(--space-4) 3rem;
  border-bottom: var(--hairline-width) solid var(--hairline);
  font-size: 0.9375rem;
  line-height: var(--leading-body);
  color: var(--ink-secondary);
  max-width: 74ch;
}
.pb-doctrine li::before {
  content: counter(doctrine, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: calc(var(--space-4) + 0.25rem);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-muted);
}

/* ---- Chapter index: hairline rows ---- */
.pb-chapters { list-style: none; margin: 0; padding: 0; border-top: var(--hairline-width) solid var(--hairline); }
.pb-chapter {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr) minmax(0, 14rem);
  align-items: baseline;
  gap: var(--space-2) var(--space-5);
  padding: var(--space-4) 0;
  border-bottom: var(--hairline-width) solid var(--hairline);
  color: inherit;
  text-decoration: none;
  transition: background-color var(--duration-quick) var(--ease-standard);
}
.pb-chapter:hover, .pb-chapter:focus-visible { background: var(--paper-raised); }
.pb-chapter-n { font-family: var(--font-mono); font-size: 0.75rem; color: var(--ink-muted); }
.pb-chapter-name { font-family: var(--font-display); font-size: 1.0625rem; line-height: var(--leading-subheading); color: var(--ink); }
.pb-chapter-doing { font-size: 0.875rem; color: var(--ink-muted); line-height: var(--leading-caption); }
.pb-chapter-stage {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
  text-align: right;
}

/* ---- Constraints: hairline rows; saffron only where a true hold exists ---- */
.pb-constraints ul { list-style: none; padding: 0; margin: 0; border-top: var(--hairline-width) solid var(--hairline); }
.pb-constraints > ul > li {
  padding: var(--space-4) 0;
  margin: 0;
  border-bottom: var(--hairline-width) solid var(--hairline);
  font-size: 0.9375rem;
  line-height: var(--leading-body);
  color: var(--ink-secondary);
}
.pb-constraints > ul > li strong { color: var(--ink); }
.pb-constraints > ul > li.is-hold {
  padding-left: var(--space-5);
  background: var(--saffron-soft);
  border-left: 2px solid var(--saffron);
  color: var(--saffron-ink);
}
.pb-constraints > ul > li.is-hold strong { color: inherit; }
.pb-constraints > ul > li.is-hold a { color: inherit; text-decoration: underline; text-underline-offset: 0.15em; }
.pb-hold {
  padding: var(--space-4) var(--space-5);
  margin: 0 0 var(--space-5);
  background: var(--saffron-soft);
  border-left: 2px solid var(--saffron);
  border-radius: 0 var(--radius-small) var(--radius-small) 0;
  font-size: 0.9375rem;
  line-height: var(--leading-body);
  color: var(--saffron-ink);
}
.pb-hold strong { color: inherit; }
.pb-hold a { color: inherit; text-decoration: underline; text-underline-offset: 0.15em; }

/* ---- Countdown: progress grammar, page-framework.md §5 ----
   Graphite track with petrol fill. Four-point stars mark
   milestones and the rail passes through their centres. Saffron
   is reserved for a true hold. */
.pb-phase { margin: 0 0 var(--band-gap); }
.pb-phase:last-of-type { margin-bottom: 0; }
.pb-phase-head { margin: 0 0 var(--space-5); padding-bottom: var(--space-4); border-bottom: var(--hairline-width) solid var(--hairline-strong); }
.pb-phase-head h2 { font-size: var(--type-h3); margin: 0 0 var(--space-2); scroll-margin-top: 6rem; }
.pb-phase-head p { max-width: 62ch; font-size: 0.9375rem; color: var(--ink-secondary); margin: 0; }
.pb-phase-count {
  display: block;
  margin-top: var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.pb-steps { list-style: none; margin: 0; padding: 0; }

.pb-step {
  position: relative;
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr) 9.5rem;
  align-items: start;
  gap: var(--space-2) var(--space-5);
  padding: var(--space-4) 0 var(--space-4) var(--space-6);
}
/* The track: dim graphite, petrol where the phase is doing work. */
.pb-step::before {
  content: "";
  position: absolute;
  left: 0.3125rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--paper-muted);
}
.pb-step:first-child::before { top: 1.35rem; }
.pb-step:last-child::before { bottom: auto; height: 1.35rem; }
/* Node: small circle for a step. */
.pb-node {
  position: absolute;
  left: 0;
  top: 1.0625rem;
  width: 0.625rem;
  height: 0.625rem;
  border-radius: 999rem;
  background: var(--paper);
  border: 2px solid var(--hairline-strong);
}
/* Star: solid four-point milestone, centred on the track. */
.pb-step.is-gate .pb-node {
  width: 0.875rem;
  height: 0.875rem;
  left: -0.125rem;
  top: 0.9375rem;
  border: 0;
  border-radius: 0;
  background: var(--petrol);
  clip-path: polygon(50% 0%, 61% 39%, 100% 50%, 61% 61%, 50% 100%, 39% 61%, 0% 50%, 39% 39%);
}
.pb-step.is-gate::before { background: linear-gradient(var(--paper-muted), var(--petrol) 45%, var(--paper-muted)); }
.pb-step.is-hold .pb-node { background: var(--saffron); }
.pb-step.is-hold::before { background: linear-gradient(var(--paper-muted), var(--saffron) 45%, var(--paper-muted)); }

.pb-when {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink);
  white-space: nowrap;
  padding-top: 0.0625rem;
}
.pb-what { font-size: 0.9375rem; line-height: var(--leading-body); color: var(--ink-secondary); }
.pb-step.is-gate .pb-what { color: var(--ink); }
.pb-gate-tag {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--petrol);
  margin-right: 0.5rem;
}
.pb-step.is-hold .pb-gate-tag { color: var(--saffron-ink); }
.pb-who {
  grid-column: 3;
  grid-row: 1;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.02em;
  color: var(--ink-muted);
  text-align: right;
  padding-top: 0.125rem;
}
.pb-refs { grid-column: 2; display: flex; flex-wrap: wrap; gap: 0.375rem; margin-top: 0.25rem; }
.pb-ref {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.02em;
  color: var(--ink-muted);
  border-bottom: var(--hairline-width) solid var(--hairline);
  text-decoration: none;
  transition: color var(--duration-quick) var(--ease-standard), border-color var(--duration-quick) var(--ease-standard);
}
.pb-ref:hover, .pb-ref:focus-visible { color: var(--petrol); border-color: var(--petrol); }

/* ---- Template files: disclosure rows, not cards ---- */
.pb-file { border-bottom: var(--hairline-width) solid var(--hairline); scroll-margin-top: 6rem; }
.pb-file:first-of-type { border-top: var(--hairline-width) solid var(--hairline); }
.pb-file > summary {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  min-height: var(--control-min);
  padding: var(--space-4) 0;
  cursor: pointer;
  list-style: none;
  transition: color var(--duration-quick) var(--ease-standard);
}
.pb-file > summary::-webkit-details-marker { display: none; }
.pb-file > summary:hover { color: var(--petrol); }
.pb-file > summary:focus-visible { outline: 2px solid var(--petrol); outline-offset: 2px; }
.pb-file-title { font-family: var(--font-display); font-size: 1.0625rem; color: var(--ink); }
.pb-file > summary:hover .pb-file-title { color: var(--petrol); }
.pb-file-sub { flex: 1 1 12rem; font-size: 0.875rem; color: var(--ink-muted); }
.pb-file-stage { font-family: var(--font-mono); font-size: 0.6875rem; letter-spacing: 0.04em; color: var(--ink-muted); white-space: nowrap; }
.pb-file-chev {
  width: 0.4375rem; height: 0.4375rem; flex-shrink: 0;
  border-right: 1.5px solid var(--ink-muted);
  border-bottom: 1.5px solid var(--ink-muted);
  transform: rotate(45deg);
  transition: transform var(--duration-quick) var(--ease-standard);
}
.pb-file[open] > summary .pb-file-chev { transform: rotate(-135deg); }
.pb-file-body { padding: 0 0 var(--space-6); max-width: 68ch; }

.pb-tasks { list-style: none; padding-left: 0; }
.pb-tasks li { display: flex; gap: var(--space-2); align-items: flex-start; }
.pb-box {
  width: 0.8125rem; height: 0.8125rem; margin-top: 0.3125rem; flex-shrink: 0;
  border: var(--hairline-width) solid var(--hairline-strong);
  border-radius: 0.1875rem;
}
.pb-box.is-done { background: var(--petrol); border-color: var(--petrol); }

/* ---- Pagination ---- */
.pb-prevnext {
  display: flex;
  justify-content: space-between;
  gap: var(--space-5);
  margin-top: var(--band-gap);
  padding-top: var(--space-5);
  border-top: var(--hairline-width) solid var(--hairline);
}
.pb-prevnext a { display: grid; gap: 0.25rem; max-width: 20rem; color: var(--ink); text-decoration: none; }
.pb-prevnext a:hover .pb-prevnext-name { color: var(--petrol); text-decoration: underline; text-underline-offset: 0.2em; }
.pb-prevnext span {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.pb-prevnext-name { font-family: var(--font-display); font-size: 1rem; line-height: var(--leading-subheading); }
.pb-next { text-align: right; margin-left: auto; }

/* ---- Footer: flat --blueprint working dark band ---- */
.site-footer {
  color: var(--blueprint-text);
  background: var(--blueprint);
  padding-block: clamp(2.5rem, 3.5vw, 3rem) var(--space-5);
}
.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: var(--space-5) var(--space-7);
  padding-bottom: var(--space-5);
  border-bottom: var(--hairline-width) solid rgba(236, 238, 240, 0.14);
}
.footer-label {
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blueprint-text-muted);
  margin-bottom: var(--space-2);
}
.footer-identity { display: grid; gap: var(--space-2); align-content: start; }
.footer-wordmark { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--blueprint-text); text-decoration: none; }
.footer-place { font-family: var(--font-mono); font-size: 0.75rem; color: var(--blueprint-text-muted); }
.footer-provenance p { font-size: 0.875rem; line-height: var(--leading-body); color: rgba(236, 238, 240, 0.78); max-width: 62ch; }
.footer-provenance a { color: var(--petrol-bright); }
.footer-provenance code {
  font-family: var(--font-mono);
  font-size: 0.8125em;
  color: var(--blueprint-text);
  background: rgba(236, 238, 240, 0.08);
  padding: 0.05em 0.3em;
  border-radius: var(--radius-small);
}
.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-5);
  padding-top: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  color: var(--blueprint-text-muted);
}

/* ---- Reading density (medium adaptation) ----
   The governed body weight is 300, correct for the site's large-type
   marketing pages. This surface is a dense operating reference, so the
   document column and footer read at 400 while the hero keeps the site's
   lighter lead. Mono micro-labels sit at 500 to match .kicker and
   ArticlesPage's .section-label. */
.pb-doc,
.site-footer { font-weight: 400; }

.pb-doc .pb-register,
.pb-rail-group,
.pb-toc b,
.pb-meta-label,
.pb-scroll th,
.pb-phase-count,
.pb-entry-go,
.pb-chapter-stage,
.pb-file-stage,
.footer-label,
.pb-register { font-size: 0.75rem; font-weight: 500; }

.pb-register b { font-weight: 500; }
.pb-entry-go,
.pb-chapter-stage,
.pb-file-stage { font-weight: 500; }

/* Reading rows: 15px/300 was too light to sustain. */
.pb-band-lead,
.pb-doctrine li,
.pb-constraints > ul > li,
.pb-what,
.pb-hold,
.pb-phase-head p,
.prose > p,
.prose li { font-size: 1rem; }

.pb-entry-why,
.pb-chapter-doing,
.pb-file-sub,
.pb-meta-value,
.pb-scroll td,
.footer-provenance p { font-size: 0.9375rem; }

.pb-who,
.pb-ref,
.pb-toc li,
.footer-place,
.footer-meta { font-size: 0.75rem; }

.pb-rail a { font-size: 0.875rem; }

/* The remaining micro-labels, including the two governed primitives. Their
   definitions above stay verbatim; this surface raises them because they
   carry real information (lifecycle state, the hold signal) in a document
   read at length rather than a page scanned once. */
.pb-doc .pill,
.pb-doc .chip-signal,
.pb-register .chip-signal,
.pb-jump-label,
.pb-gate-tag,
.pb-prevnext span { font-size: 0.75rem; }

/* ---- Responsive ---- */
@media (max-width: 74rem) {
  .pb-step { grid-template-columns: 5rem minmax(0, 1fr); }
  .pb-who { grid-column: 2; grid-row: auto; text-align: left; padding-top: 0; }
  .pb-chapter { grid-template-columns: 2.5rem minmax(0, 1fr); }
  .pb-chapter-stage { grid-column: 2; text-align: left; }
}

@media (max-width: 62rem) {
  .pb-shell { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .pb-rail { display: none; }
  .pb-jump { display: block; }
  .pb-toc ul { columns: 1; }
  .header-nav { display: none; }
  .footer-top { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 48rem) {
  .site-header { top: 0.5rem; width: calc(100% - 1rem); }
  .header-row { min-height: 3.25rem; }
  .wordmark-rule, .wordmark-product { display: none; }
  .header-cta { padding: 0.5rem 0.875rem; font-size: 0.8125rem; }
  .pb-step { grid-template-columns: minmax(0, 1fr); padding-left: var(--space-5); gap: var(--space-1); }
  .pb-when { color: var(--ink-muted); }
  .pb-entry { grid-template-columns: minmax(0, 1fr); }
  .pb-entry-go { grid-row: auto; grid-column: 1; }
  .pb-prevnext { flex-direction: column; }
  .pb-next { text-align: left; margin-left: 0; }
  .pb-register { gap: var(--space-3) var(--space-5); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

@media print {
  .site-header, .skip-link, .pb-rail, .pb-jump, .pb-prevnext { display: none; }
  .pb-shell { display: block; padding: 0; }
  .pb-hero { color: var(--ink); background: none; padding-block: 0 var(--space-5); }
  .pb-hero .page-title, .pb-hero .lead, .pb-hero .kicker { color: var(--ink); }
  .pb-file > summary { display: none; }
  .pb-file-body { max-width: none; }
  .site-footer { color: var(--ink); background: none; }
}