/* =================================================================
   v4_5_canonical.css  v3  (locked-palette enforcement)
   Single source of truth for sub-page typography, hierarchy and
   component vocabulary. Locked design system per operator brief
   2026-05-18 (revision 3).

   Palette: parchment #E8E0D4, ink-deep #3D3833, gold #B8A07A,
            gold-deep #8C7754, stone #7A7168, warm grey #9A9590,
            label grey #8A847E, bar BG #141A24, rule line rgba(184, 160, 122, 0.5).

   Burgundy #D45555 reserved for critical alerts.
   Green    #3D7A4A reserved for semantic positives.

   Cascade: inline <style> -> v4_5_canonical -> v4_1 -> v4_3
   Sub-page-only scope. Home page is untouched.
   ================================================================= */

/* ---------- Tokens ---------------------------------------------- */
:root {
  --bg:           #E8E0D4;
  --bg-deep:      #E8E0D4;
  --ink:          #3D3833;
  --ink-soft:     #7A7168;
  --ink-faint:    #8A847E;
  --rule:         rgba(184, 160, 122, 0.5);
  --gold:         #B8A07A;
  --gold-deep:    #8C7754;
  --bar-bg:       #141A24;
  --warm-grey:    #9A9590;
  --label-grey:   #8A847E;
  --stone:        #7A7168;
  --bg-dark:      #040609;
  --grid-faint:   rgba(184, 160, 122, 0.18);
  --border-gold:  rgba(184, 160, 122, 0.5);
  --font-display: 'Crimson Pro', Georgia, serif;
  --font-body:    'DM Sans', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-mono:    'DM Mono', 'SF Mono', Consolas, monospace;
}

/* ---------- Reset minimal --------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

/* ---------- Body ------------------------------------------------ */
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- Main frame, 920px ----------------------------------- */
main {
  flex: 1;
  padding: 56px 40px 24px;
  display: flex;
  justify-content: center;
}
.frame { max-width: 920px; width: 100%; }

/* ---------- Eyebrow (gold-deep mono caps + hairline trail) ------ */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold-deep);
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.eyebrow::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-gold);
}

/* ---------- Display H1 ----------------------------------------- */
h1.headline {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(45px, 6.5vw, 75px);
  line-height: 1.05;
  letter-spacing: -0.012em;
  color: var(--ink);
  margin: 0 0 28px 0;
  max-width: 880px;
}
h1.headline em,
h2 em, h3 em {
  font-style: italic;
  color: var(--gold-deep);
  font-weight: inherit;
}

/* ---------- Sub-headline (21px body) --------------------------- */
p.sub {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 21px;
  line-height: 1.5;
  color: var(--ink);
  max-width: 680px;
  margin: 0 0 56px 0;
}

/* ---------- Stats strip (3 col, top+bottom hairlines) ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--border-gold);
  border-bottom: 1px solid var(--border-gold);
  margin-bottom: 64px;
}
.stat {
  padding: 28px 24px;
  border-right: 1px solid var(--border-gold);
  text-align: center;
}
.stat:last-child { border-right: none; }
.stat .figure {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(36px, 4.4vw, 52px);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 10px;
}
.stat .label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--label-grey);
}

/* ---------- Chart block ---------------------------------------- */
.chart-block { margin-bottom: 64px; }
.chart-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.chart-eyebrow::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-gold);
}
.chart-canvas {
  border: 1px solid var(--border-gold);
  background: var(--bg);
  padding: 0;
  overflow: hidden;
}
.chart-canvas svg { display: block; width: 100%; height: auto; }
.chart-caption {
  margin-top: 32px;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink);
  max-width: 760px;
}
.chart-source {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--border-gold);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--label-grey);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.chart-source a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--border-gold);
}

/* ---------- Action doors --------------------------------------- */
.actions {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 48px;
}
.door {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 0;
  border-bottom: 1px solid transparent;
}
.door.primary   { color: var(--ink);      border-bottom-color: var(--gold-deep); }
.door.primary:hover   { color: var(--gold-deep); }
.door.secondary { color: var(--ink-soft); }
.door.secondary:hover { color: var(--ink); border-bottom-color: var(--border-gold); }
.door .arrow {
  font-family: var(--font-body);
  font-size: 14px;
  display: inline-block;
}

/* ---------- Note block ----------------------------------------- */
.note {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border-gold);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--label-grey);
  line-height: 1.7;
}
.note .data-line { margin-bottom: 8px; }
.note .meta-line {
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.01em;
  text-transform: none;
  color: var(--ink);
  line-height: 1.55;
}
.note .highlight { color: var(--gold-deep); }

/* ---------- Footer (bar BG dark navy) -------------------------- */
footer { background: var(--bar-bg); }
.footer-inner {
  max-width: 920px;
  margin: 0 auto;
  padding: 22px 40px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--warm-grey);
}
.footer-inner sup {
  font-size: 8px;
  letter-spacing: 0;
  vertical-align: super;
  color: var(--gold);
}
.footer-inner a {
  color: var(--warm-grey);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.footer-inner a:hover {
  color: #E8E0D4;
  border-bottom-color: var(--gold-deep);
}

/* ---------- Revision notice ------------------------------------ */
.revision-notice {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--gold-deep);
  background: rgba(184, 160, 122, 0.08);
  border-left: 2px solid var(--gold-deep);
  padding: 12px 18px;
  margin-bottom: 28px;
  line-height: 1.7;
}
.revision-notice strong { color: var(--ink); font-weight: 500; }
.revision-notice a {
  color: var(--gold-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-deep);
}

/* ---------- Thesis extension (details/summary) ----------------- */
.thesis-extension {
  margin-top: 24px;
  border-top: 1px solid var(--border-gold);
  padding-top: 16px;
}
.thesis-extension > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold-deep);
  padding: 4px 0;
  user-select: none;
}
.thesis-extension > summary::-webkit-details-marker { display: none; }
.thesis-extension > summary:hover { color: var(--ink); }
.thesis-extension > summary .summary-chevron {
  font-family: var(--font-body);
  font-size: 14px;
  display: inline-block;
}
.thesis-extension[open] > summary .summary-chevron { transform: rotate(90deg); }
.thesis-extension .extended-content {
  margin-top: 18px;
  padding: 0 0 8px;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink);
  max-width: 760px;
}
.thesis-extension .extended-content p { margin: 0 0 14px; }
.thesis-extension .extended-content p:last-child { margin-bottom: 0; }

/* ---------- Cite-this-finding block ---------------------------- */
aside.cite-this-finding {
  margin: 56px 0 32px;
  padding: 28px 32px;
  background: rgba(184, 160, 122, 0.04);
  border: 1px solid var(--border-gold);
  border-left: 3px solid var(--gold);
}
.cite-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gold);
  margin-bottom: 14px;
}
.cite-formal {
  font-family: Georgia, var(--font-display);
  font-size: 14.5px;
  color: var(--ink);
  line-height: 1.65;
  margin-bottom: 18px;
}
.cite-formal em { color: var(--gold-deep); }
.cite-downloads {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  display: flex;
  gap: 22px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.cite-downloads a {
  color: var(--gold-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(140, 119, 84, 0.30);
  padding-bottom: 1px;
}
.cite-downloads a:hover { color: var(--gold); border-color: var(--gold); }
.cite-methodology {
  font-family: Georgia, serif;
  font-size: 12.5px;
  color: var(--ink);
  line-height: 1.55;
  padding-top: 16px;
  border-top: 1px solid rgba(184, 160, 122, 0.18);
}
.cite-methodology strong { color: var(--ink); }
.cite-methodology code {
  background: rgba(184, 160, 122, 0.10);
  padding: 1px 5px;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11.5px;
}
.cite-methodology a { color: var(--gold); }

/* ---------- Mobile -------------------------------------------- */
@media (max-width: 720px) {
  main { padding: 32px 24px 16px; }
  .stats { grid-template-columns: 1fr; }
  .stat {
    border-right: none;
    border-bottom: 1px solid var(--border-gold);
    padding: 22px 0;
  }
  .stat:last-child { border-bottom: none; }
  p.sub { margin-bottom: 40px; font-size: 18px; }
  .actions { flex-direction: column; align-items: flex-start; gap: 8px; }
  .chart-source { flex-direction: column; gap: 6px; }
  .footer-inner { flex-direction: column; padding: 18px 24px; }
}

/* ---------- Print --------------------------------------------- */
@media print {
  .thesis-extension > summary { display: none; }
  .thesis-extension .extended-content { display: block !important; }
}