/* =========================================================================
   Castra Risk — shared site stylesheet.
   The single home for design tokens, masthead, folio, breadcrumb, footer,
   and the component primitives reused across new pages. See tokens.md for
   the design-system spine.

   Per-page CSS lives inline in each page's <style> block.
   ========================================================================= */

:root {
  --bone: #FAFAF7;
  --bone-2: #F4F2EC;
  --paper: #FFFFFF;
  --ink: #1A1A1A;
  --ink-90: rgba(26,26,26,0.90);
  --ink-70: rgba(26,26,26,0.70);
  --ink-55: rgba(26,26,26,0.55);
  --ink-40: rgba(26,26,26,0.40);
  --ink-20: rgba(26,26,26,0.20);
  --rule: rgba(26,26,26,0.12);

  --oxblood: #6B1F2C;
  --oxblood-dark: #4F1620;
  --oxblood-soft: #F2E4E6;

  --signal: #0B6443;
  --signal-soft: #E4F1EA;
  --ember: #7E3D22;
  --ember-soft: #F5E8DF;
  --plum: #6E2E7A;
  --plum-soft: #EFE4F1;
  --gold: #7B5A10;
  --gold-soft: #F4EBD3;
  --sky: #3B6F8B;
  --sky-soft: #E1ECF2;
  --mint: #2F7A5E;
  --slate: #3D4759;
  --navy: #1B3A5C;

  --font-display: 'Source Serif 4', 'Tiempos Headline', 'GT Sectra', Georgia, serif;
  --font-body:    'Source Serif 4', 'Tiempos Text', 'Source Serif', Georgia, serif;
  --font-sans:    'Inter', 'Söhne', 'GT America', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bone); color: var(--ink);
  font-family: var(--font-body); font-size: 18px; line-height: 1.55;
  font-feature-settings: 'kern' 1, 'liga' 1;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }

.wrap { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
@media (max-width: 768px) { .wrap { padding: 0 20px; } }
.tnum { font-variant-numeric: tabular-nums; }
.smallcaps { font-family: var(--font-sans); font-size: 11px; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; }

/* ------------ masthead ------------ */
.mast { background: var(--bone); border-bottom: 1px solid var(--rule); position: sticky; top: 0; z-index: 10; }
.mast-inner { display: flex; align-items: center; gap: 32px; height: 64px; position: relative; }
.wordmark { display: inline-flex; align-items: baseline; color: var(--ink); font-family: var(--font-display); font-weight: 500; font-size: 18px; letter-spacing: 0.04em; }
.wordmark .C { color: var(--oxblood); font-weight: 500; }
.nav { display: flex; gap: 28px; margin-left: 28px; }
.nav a { font-family: var(--font-sans); font-size: 13px; color: var(--ink-70); letter-spacing: 0.005em; transition: color 0.2s; }
.nav a:hover { color: var(--ink); }
.nav a.current { color: var(--ink); }
.nav a.current::after { content: ''; display: block; width: 100%; height: 1px; background: var(--oxblood); margin-top: 4px; }
.mast-meta { margin-left: auto; font-family: var(--font-mono); font-size: 11px; color: var(--ink-55); letter-spacing: 0.14em; text-transform: uppercase; }
.menu-toggle { display: none; background: transparent; border: 0; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink); cursor: pointer; padding: 8px 0; }
@media (max-width: 900px) {
  .nav { display: none; }
  .menu-toggle { display: inline-block; margin-left: auto; }
  .mast-meta { display: none; }
  .nav.open { display: flex; position: absolute; top: 64px; left: 0; right: 0; background: var(--bone); border-bottom: 1px solid var(--rule); padding: 24px 20px 32px; flex-direction: column; gap: 18px; margin: 0; z-index: 5; }
}

/* ------------ folio + breadcrumb ------------ */
.folio { background: var(--bone); border-bottom: 1px solid var(--rule); }
.folio-inner { display: flex; align-items: center; justify-content: space-between; height: 34px; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-55); }
.folio .lhs { display: inline-flex; align-items: center; gap: 10px; }
.folio .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 0 3px rgba(11,100,67,0.18); }
@media (max-width: 600px) { .folio .rhs { display: none; } }
.crumb { border-bottom: 1px solid var(--rule); background: var(--bone); }
.crumb-inner { padding: 14px 0; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-55); display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.crumb-inner a { color: var(--ink-55); } .crumb-inner a:hover { color: var(--ink); }
.crumb-inner .sep { color: var(--ink-20); } .crumb-inner .current { color: var(--ink); }

/* ------------ thesis / page head ------------ */
.thesis { padding: 96px 0 80px; border-bottom: 1px solid var(--rule); }
@media (max-width: 768px) { .thesis { padding: 64px 0 56px; } }
.thesis-grid { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(220px, 1fr); gap: 96px; align-items: start; }
@media (max-width: 960px) { .thesis-grid { grid-template-columns: 1fr; gap: 48px; } }
.thesis-kicker { display: inline-flex; align-items: center; gap: 14px; font-family: var(--font-sans); font-size: 11px; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-55); margin-bottom: 32px; }
.thesis-kicker::before { content: ''; width: 24px; height: 1px; background: currentColor; opacity: 0.85; }
.thesis h1 { font-family: var(--font-display); font-weight: 380; font-size: clamp(40px, 5.2vw, 72px); line-height: 1.04; letter-spacing: -0.022em; max-width: 18ch; margin-bottom: 40px; color: var(--ink); }
.thesis h1 em { font-style: italic; color: var(--navy); font-weight: 380; }
.thesis-body { font-family: var(--font-body); font-size: 19px; line-height: 1.6; color: var(--ink-90); max-width: 64ch; }
.thesis-body p { margin-bottom: 20px; } .thesis-body p:last-child { margin-bottom: 0; }
.thesis-body .punctum { font-family: var(--font-display); font-style: italic; font-size: 22px; color: var(--ink); margin-top: 28px; }

.marginalia { position: sticky; top: 124px; font-family: var(--font-body); font-size: 14px; line-height: 1.55; color: var(--ink-70); }
@media (max-width: 960px) { .marginalia { position: static; } }
.motto-rule { width: 32px; height: 2px; background: var(--oxblood); margin-bottom: 14px; }
.motto { font-family: var(--font-display); font-style: italic; font-size: 19px; color: var(--ink); margin-bottom: 6px; }
.motto-en { font-family: var(--font-sans); font-size: 11px; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-55); }
.marg-divider { height: 1px; background: var(--rule); margin: 28px 0; }
.marg-h { font-family: var(--font-sans); font-size: 11px; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-55); margin-bottom: 14px; }
.marg-list { list-style: none; }
.marg-list li { font-family: var(--font-body); font-size: 14px; line-height: 1.5; color: var(--ink-70); padding: 8px 0; border-bottom: 1px solid var(--rule); display: flex; justify-content: space-between; gap: 12px; }
.marg-list li:last-child { border-bottom: 0; }
.marg-list .mono { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; color: var(--ink-55); white-space: nowrap; }
.marg-list a { color: var(--ink-90); } .marg-list a:hover { color: var(--ink); }

/* ------------ section head ------------ */
.section-head { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 24px; margin-bottom: 48px; border-top: 1px solid var(--ink); padding-top: 28px; }
@media (max-width: 600px) { .section-head { grid-template-columns: 1fr; } }
.section-head .kicker { font-family: var(--font-sans); font-size: 11px; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-55); margin-bottom: 14px; }
.section-head h2 { font-family: var(--font-display); font-size: clamp(28px, 3.2vw, 44px); font-weight: 380; letter-spacing: -0.016em; line-height: 1.1; max-width: 28ch; color: var(--ink); }
.section-head h2 em { font-style: italic; color: var(--navy); }
.section-head .meta { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-55); white-space: nowrap; }

/* ------------ tables ------------ */
.tbl-wrap { overflow-x: auto; margin-bottom: 64px; }
.tbl-wrap:last-child { margin-bottom: 0; }
.tbl-cap { display: flex; align-items: baseline; gap: 18px; margin-bottom: 18px; padding-bottom: 14px; border-bottom: 1px solid var(--ink); flex-wrap: wrap; }
.tbl-num { font-family: var(--font-sans); font-size: 11px; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-55); }
.tbl-title { font-family: var(--font-display); font-weight: 400; font-size: 22px; line-height: 1.2; color: var(--ink); letter-spacing: -0.012em; }
.tbl-title em { font-style: italic; }
.tbl-meta { margin-left: auto; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-55); }
.tbl { width: 100%; border-collapse: collapse; font-family: var(--font-sans); font-size: 14px; font-variant-numeric: tabular-nums; }
.tbl thead th { font-family: var(--font-sans); font-size: 10px; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-55); text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--ink); background: transparent; }
.tbl thead th.num, .tbl tbody td.num { text-align: right; }
.tbl tbody td { padding: 16px; vertical-align: top; color: var(--ink-90); border-bottom: 1px solid var(--rule); }
.tbl tbody td.lead { color: var(--ink); font-weight: 500; }
.tbl tbody td.mono { font-family: var(--font-mono); font-size: 13px; color: var(--ink); }
.tbl tbody td .sub { display: block; font-size: 12px; color: var(--ink-55); margin-top: 4px; font-style: italic; font-family: var(--font-body); }
.tbl tbody tr:last-child td { border-bottom: 1px solid var(--ink); }
.tbl-source { font-family: var(--font-sans); font-style: italic; font-size: 12px; color: var(--ink-55); margin-top: 12px; }

/* ------------ buttons ------------ */
.btn-oxblood { display: inline-flex; align-items: center; gap: 12px; background: var(--oxblood); color: #FFF; font-family: var(--font-sans); font-size: 13px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; padding: 18px 32px; transition: background 0.2s; border: 0; cursor: pointer; }
.btn-oxblood:hover, .btn-oxblood:focus { background: var(--oxblood-dark); }
.btn-oxblood[disabled] { opacity: 0.6; cursor: default; }
.btn-text { font-family: var(--font-sans); font-size: 13px; letter-spacing: 0.04em; color: var(--ink); border-bottom: 1px solid var(--ink-40); padding-bottom: 4px; transition: border-color 0.2s; background: transparent; border-top: 0; border-left: 0; border-right: 0; cursor: pointer; }
.btn-text:hover { border-bottom-color: var(--ink); }

/* ------------ badges ------------ */
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 5px 10px; font-family: var(--font-sans); font-size: 10px; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-70); border: 1px solid var(--rule); background: transparent; border-radius: 0; }
.badge--signal { color: var(--signal); border-color: var(--signal); }
.badge--oxblood { color: var(--oxblood); border-color: var(--oxblood); }
.badge--plum { color: var(--plum); border-color: var(--plum); }
.badge--gold { color: var(--gold); border-color: var(--gold); }

/* ------------ figure ------------ */
.fig { margin: 48px 0; }
.fig figcaption { font-family: var(--font-sans); font-size: 12px; line-height: 1.55; color: var(--ink-70); padding-top: 12px; border-top: 1px solid var(--rule); display: flex; flex-direction: column; gap: 4px; }
.fig-num { font-family: var(--font-sans); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-55); }
.fig-title { color: var(--ink); font-weight: 500; }
.fig-source { font-style: italic; color: var(--ink-55); }

/* ------------ displayed quote ------------ */
.dq { border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); margin: 64px auto; padding: 40px 0; text-align: center; max-width: 56ch; }
.dq p { font-family: var(--font-display); font-style: italic; font-size: 28px; line-height: 1.35; color: var(--ink); margin-bottom: 18px; }
.dq cite { font-family: var(--font-sans); font-style: normal; font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-55); }

/* ------------ cta ------------ */
.cta { padding: 128px 0 120px; text-align: center; border-bottom: 1px solid var(--rule); }
@media (max-width: 768px) { .cta { padding: 80px 0 72px; } }
.cta-rule { width: 44px; height: 2px; background: var(--oxblood); margin: 0 auto 28px; }
.cta-motto { font-family: var(--font-display); font-style: italic; font-size: 19px; color: var(--ink-90); margin-bottom: 10px; }
.cta-motto-en { font-family: var(--font-sans); font-size: 11px; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-55); margin-bottom: 48px; }
.cta h2 { font-family: var(--font-display); font-size: clamp(30px, 4vw, 52px); font-weight: 380; line-height: 1.1; letter-spacing: -0.018em; max-width: 22ch; margin: 0 auto 44px; color: var(--ink); }
.cta h2 em { font-style: italic; color: var(--navy); }
.cta-row { display: inline-flex; align-items: center; gap: 28px; flex-wrap: wrap; justify-content: center; }

/* ------------ footer ------------ */
footer { background: var(--bone-2); padding: 88px 0 40px; }
@media (max-width: 768px) { footer { padding: 56px 0 32px; } }
.compliance { font-family: var(--font-body); font-style: italic; font-size: 13px; line-height: 1.6; color: var(--ink-55); max-width: 72ch; margin-bottom: 56px; padding-top: 24px; border-top: 1px solid var(--ink); }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 64px; }
@media (max-width: 768px) { .foot-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
.foot-brand .wm { font-family: var(--font-display); font-size: 22px; font-weight: 500; letter-spacing: 0.04em; color: var(--ink); margin-bottom: 14px; }
.foot-brand .wm .C { color: var(--oxblood); }
.foot-brand p { font-family: var(--font-body); font-size: 14px; line-height: 1.55; color: var(--ink-70); max-width: 36ch; }
.foot-col h4 { font-family: var(--font-sans); font-size: 11px; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-55); margin-bottom: 18px; }
.foot-col ul { list-style: none; } .foot-col li { margin-bottom: 10px; }
.foot-col a { font-family: var(--font-sans); font-size: 14px; color: var(--ink-90); transition: color 0.2s; }
.foot-col a:hover { color: var(--ink); }
.colophon { padding-top: 28px; border-top: 1px solid var(--rule); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 18px; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-55); }

/* ------------ prose (long-form text on simple pages) ------------ */
.prose { font-family: var(--font-body); font-size: 17px; line-height: 1.7; color: var(--ink-90); max-width: 64ch; }
.prose p { margin-bottom: 18px; }
.prose h2 { font-family: var(--font-display); font-weight: 400; font-size: clamp(24px, 2.4vw, 30px); letter-spacing: -0.012em; color: var(--ink); margin: 56px 0 18px; line-height: 1.2; }
.prose h2 em { font-style: italic; color: var(--navy); }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-family: var(--font-display); font-weight: 400; font-size: 20px; color: var(--ink); margin: 36px 0 12px; line-height: 1.3; letter-spacing: -0.008em; }
.prose ul, .prose ol { padding-left: 24px; margin-bottom: 20px; }
.prose li { margin-bottom: 10px; }
.prose a { border-bottom: 1px solid var(--ink-40); transition: border-color 0.2s; }
.prose a:hover { border-bottom-color: var(--ink); }
.prose strong { font-weight: 600; color: var(--ink); }
.prose em { font-style: italic; color: var(--navy); }

/* ------------ motion ------------ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.001s !important; animation-duration: 0.001s !important; }
  html { scroll-behavior: auto; }
}

/* ------------ plate (numbered photographic figure) ------------
   Print-quarterly page furniture. Used sparingly — at most one per page,
   between text-heavy sections, as a tonal break. The image is duotoned
   to the brand ink so a photograph reads as editorial, not as stock. */
.plate {
  margin: 0;
  padding: 96px 0;
  background: var(--bone-2);
  border-block: 1px solid var(--rule);
}
@media (max-width: 768px) { .plate { padding: 64px 0; } }
.plate-frame {
  width: min(1100px, calc(100vw - 64px));
  margin: 0 auto;
  aspect-ratio: 16 / 9;
  position: relative;
  overflow: hidden;
  background: var(--ink);
  border: 1px solid var(--ink);
  isolation: isolate;
}
@media (max-width: 768px) { .plate-frame { aspect-ratio: 4 / 3; width: calc(100vw - 32px); } }
.plate-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) contrast(1.08) brightness(0.92);
  mix-blend-mode: luminosity;
}
.plate-frame::before {
  content: '';
  position: absolute; inset: 0;
  background: var(--bone);
  mix-blend-mode: screen;
  opacity: 0.18;
  pointer-events: none;
  z-index: 1;
}
.plate-frame::after {
  content: '';
  position: absolute; inset: 0;
  background: var(--ink);
  mix-blend-mode: multiply;
  opacity: 0.28;
  pointer-events: none;
  z-index: 2;
}
.plate-caption {
  width: min(1100px, calc(100vw - 64px));
  margin: 24px auto 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: baseline;
}
@media (max-width: 700px) { .plate-caption { grid-template-columns: 1fr; gap: 6px; } }
.plate-num {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--oxblood);
}
.plate-title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.4;
  color: var(--ink);
}
.plate-title em { font-style: italic; color: var(--ink-70); }
.plate-source {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-55);
  white-space: nowrap;
}
@media (max-width: 700px) { .plate-source { white-space: normal; } }