:root {
  /* Dark base — deep ink-blue, not pure black */
  --ink: #0E1517;
  --ink-soft: #161F22;
  --ink-lifted: #1E282C;
  --slate: #2A363B;

  /* Brand teals — brighter sibling for dark UI, original for diagram flagship */
  --teal: #2BB4C2;
  --teal-deep: #1695A3;
  --teal-shadow: #0F6E78;
  /* Item 4 (preventive): teal for use on light/paper surfaces — ≈ 4.6:1. No light-panel teal text exists today; required shade for any future light-surface
     teal text/link/UI, incl. forthcoming forms. */
  --teal-on-light: var(--teal-shadow);

  /* Warm paper for text — preserves the editorial warmth in dark mode */
  --paper: #E8E2D6;
  --paper-soft: rgba(232, 226, 214, 0.78);
  --paper-quiet: rgba(232, 226, 214, 0.55);

  /* Rules and dividers */
  --rule: rgba(232, 226, 214, 0.12);
  --rule-strong: rgba(232, 226, 214, 0.22);

  /* Architecture diagram surface */
  --arch-canvas: #161F22;
  --arch-tier: #1E282C;
  --arch-tier-edge: rgba(232, 226, 214, 0.08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 120px; /* SC 2.4.11 — clear the ~113px sticky nav for skip-link/anchor jumps */ }

body {
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 400;
  color: var(--paper);
  background: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ============ NAVIGATION ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(14, 21, 23, 0.85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--rule);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;
  max-width: 1240px;
  margin: 0 auto;
}

.nav-logo { display: flex; align-items: center; }
.nav-logo img { height: 72px; width: auto; display: block; }

.nav-links {
  display: flex;
  gap: 40px;
  list-style: none;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.nav-links a {
  color: var(--paper-soft);
  text-decoration: none;
  position: relative;
  padding-bottom: 4px;
  transition: color 0.2s ease;
}

.nav-links a:hover { color: var(--paper); }

.nav-links a.active {
  color: var(--paper);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 2px;
  background: var(--teal);
}

.nav-cta {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 13px;
  font-weight: 500;
  padding: 10px 20px;
  border: 1px solid var(--rule-strong);
  color: var(--paper);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: all 0.2s ease;
}

.nav-cta:hover {
  background: var(--teal);
  color: var(--ink);
  border-color: var(--teal);
}

/* ============ HERO ============ */
.hero {
  padding: 100px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -100px; right: -200px;
  width: 900px; height: 900px;
  background: radial-gradient(circle, rgba(43, 180, 194, 0.10) 0%, transparent 60%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -200px; left: -200px;
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(15, 110, 120, 0.08) 0%, transparent 65%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 80px;
  align-items: end;
  position: relative;
}

.eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.eyebrow::before {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--teal);
}

.hero h1 {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: clamp(46px, 5.5vw, 76px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin-bottom: 32px;
}

.hero h1 em {
  font-style: italic;
  font-weight: 300;
  color: var(--teal);
}

.hero-lede {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 21px;
  line-height: 1.5;
  color: var(--paper-soft);
  max-width: 520px;
  margin-bottom: 40px;
}

.hero-meta {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-bottom: 12px;
  border-left: 1px solid var(--rule-strong);
  padding-left: 32px;
}

.hero-meta-item {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper-quiet);
}

.hero-meta-item strong {
  display: block;
  font-family: 'Fraunces', serif;
  font-weight: 400;
  font-size: 17px;
  letter-spacing: 0;
  text-transform: none;
  color: var(--paper);
  margin-top: 4px;
}

/* ============ PILLARS ============ */
.pillars {
  padding: 100px 0;
  border-top: 1px solid var(--rule);
}

.section-head {
  margin-bottom: 64px;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 60px;
  align-items: end;
}

.section-head h2 {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 44px;
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.section-head h2 em {
  font-style: italic;
  color: var(--teal);
}

.section-head p {
  font-size: 17px;
  color: var(--paper-soft);
  max-width: 560px;
}

.pillar-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--paper);
}

.pillar {
  padding: 48px 40px 48px 0;
  border-right: 1px solid var(--rule);
  position: relative;
}

.pillar:last-child { border-right: none; padding-right: 0; }
.pillar:not(:first-child) { padding-left: 40px; }

/* Linked pillar cards — reset anchor defaults, add hover affordance matching pillar-idx pattern */
a.pillar { text-decoration: none; color: inherit; display: block; transition: color 0.2s; }
a.pillar h3 { transition: color 0.2s; }
a.pillar:hover h3 { color: var(--teal); }

.pillar-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--teal);
  margin-bottom: 24px;
}

.pillar h3 {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  font-size: 26px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 18px;
  color: var(--paper);
}

.pillar p {
  font-size: 15px;
  color: var(--paper-soft);
  line-height: 1.6;
}

/* ============ ARCHITECTURE ============ */
.architecture {
  background: var(--ink-soft);
  padding: 100px 0;
  position: relative;
}

.arch-intro {
  margin-bottom: 56px;
  max-width: 720px;
}

.arch-intro h2 {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 44px;
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin-bottom: 24px;
  color: var(--paper);
}

.arch-intro h2 em { font-style: italic; color: var(--teal); }

.arch-intro p {
  font-size: 17px;
  color: var(--paper-soft);
}

.arch-diagram {
  background: var(--arch-canvas);
  border: 1px solid var(--rule);
  padding: 48px;
  margin-bottom: 48px;
  position: relative;
}

.arch-diagram svg {
  width: 100%;
  height: auto;
  display: block;
}

.arch-caption {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--paper-quiet);
  text-align: center;
  margin-top: 24px;
}

/* ============ VALIDATION ============ */
.validation {
  padding: 100px 0;
  border-top: 1px solid var(--rule);
}

.quote-block {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 80px;
  align-items: start;
}

.quote-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
}

.quote-content blockquote {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 32px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin-bottom: 32px;
}

.quote-content blockquote em {
  font-style: italic;
  color: var(--teal);
}

.quote-attribution {
  font-size: 14px;
  color: var(--paper-soft);
  border-top: 1px solid var(--rule);
  padding-top: 20px;
}

.quote-attribution a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid var(--teal-shadow);
  padding-bottom: 1px;
  transition: border-color 0.2s;
}

.quote-attribution a:hover { border-bottom-color: var(--teal); }

/* ============ PROVENANCE ============ */
.provenance {
  background: var(--ink);
  color: var(--paper);
  padding: 100px 0;
  border-top: 1px solid var(--rule);
}

.prov-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.prov-grid h2 {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 44px;
  line-height: 1.1;
  letter-spacing: -0.015em;
}

.prov-grid h2 em {
  font-style: italic;
  color: var(--teal);
}

.prov-grid p {
  font-size: 17px;
  line-height: 1.6;
  color: var(--paper-soft);
}

.prov-grid p + p { margin-top: 18px; }

.prov-grid p:last-child {
  font-style: italic;
  color: var(--teal);
  font-family: 'Fraunces', serif;
  font-size: 19px;
  margin-top: 24px;
}

/* ============ CTA ============ */
.cta-band {
  padding: 100px 0;
  text-align: center;
  border-top: 1px solid var(--rule);
  position: relative;
  overflow: hidden;
}

.cta-band::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(43, 180, 194, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.cta-band .container { position: relative; }

.cta-band h2 {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 56px;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--paper);
}

.cta-band h2 em { font-style: italic; color: var(--teal); }

.cta-tagline {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper-quiet);
  margin-bottom: 48px;
}

.cta-button {
  display: inline-block;
  padding: 18px 40px;
  background: var(--teal);
  color: var(--ink);
  text-decoration: none;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: all 0.2s ease;
  box-shadow: 0 0 0 0 rgba(43, 180, 194, 0);
}

.cta-button:hover {
  background: var(--paper);
  box-shadow: 0 0 40px 0 rgba(43, 180, 194, 0.25);
}

/* ============ FOOTER ============ */
.footer {
  background: var(--ink-soft);
  padding: 64px 0 32px;
  border-top: 1px solid var(--rule);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 48px;
}

.footer-logo img { height: 130px; width: auto; display: block; }
.footer-logo p {
  font-size: 13px;
  color: var(--paper-quiet);
  margin-top: 16px;
  max-width: 280px;
  line-height: 1.5;
}

.footer h4 {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 16px;
}

.footer ul { list-style: none; }
.footer li { margin-bottom: 8px; color: var(--paper-soft); font-size: 13px; }
.footer a {
  font-size: 13px;
  color: var(--paper-soft);
  text-decoration: none;
  transition: color 0.2s;
}
.footer a:hover { color: var(--teal); }

.footer-base {
  border-top: 1px solid var(--rule);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px 24px;
  font-size: 12px;
  color: var(--paper-quiet);
  font-family: 'IBM Plex Mono', monospace;
  letter-spacing: 0.04em;
}
/* Quiet build/revision marker — intentionally dim and unobtrusive */
.footer-rev {
  font-size: 11px;
  opacity: 0.55;
  letter-spacing: 0.05em;
}

@media (max-width: 880px) {
  .hero-grid, .section-head, .quote-block, .prov-grid { grid-template-columns: 1fr; gap: 40px; }
  .pillar-grid { grid-template-columns: 1fr; }
  .pillar { border-right: none; border-bottom: 1px solid var(--rule); padding: 40px 0; }
  .pillar:not(:first-child) { padding-left: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
}

/* =================================================================
   PAGE HERO (used on inner pages — smaller than homepage hero)
   ================================================================= */
.page-hero {
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--rule);
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -100px; right: -200px;
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(43, 180, 194, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.page-hero-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 80px;
  align-items: end;
  position: relative;
}

.page-hero h1 {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: clamp(40px, 4.6vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin-bottom: 24px;
}

.page-hero h1 em {
  font-style: italic;
  color: var(--teal);
}

.page-hero-lede {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 19px;
  line-height: 1.55;
  color: var(--paper-soft);
  max-width: 540px;
}

/* Breadcrumb */
.crumb {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper-quiet);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.crumb a {
  color: var(--paper-quiet);
  text-decoration: none;
  transition: color 0.2s;
}
.crumb a:hover { color: var(--teal); }
.crumb-sep {
  width: 4px; height: 4px;
  background: var(--rule-strong);
  border-radius: 50%;
}

/* =================================================================
   STANDARD CONTENT SECTION (inner page)
   ================================================================= */
.content-section {
  padding: 96px 0;
  border-top: 1px solid var(--rule);
}

.content-section:first-of-type { border-top: none; }

.content-section.surface-soft {
  background: var(--ink-soft);
}

.content-head {
  margin-bottom: 56px;
  max-width: 760px;
}

.content-head .label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.content-head .label::before {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--teal);
}

.content-head h2 {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 44px;
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--paper);
  margin-bottom: 24px;
}

.content-head h2 em { font-style: italic; color: var(--teal); }

.content-head p {
  font-size: 17px;
  color: var(--paper-soft);
  line-height: 1.6;
}

/* =================================================================
   DIAGRAM CONTAINER
   ================================================================= */
.diagram {
  background: var(--arch-canvas);
  border: 1px solid var(--rule);
  padding: 48px;
  margin: 0 0 24px;
}

.diagram svg {
  width: 100%;
  height: auto;
  display: block;
}

.diagram-caption {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--paper-quiet);
  text-align: center;
  margin-bottom: 64px;
}

/* Two-column diagram + prose layout */
.diagram-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 56px;
  align-items: start;
  margin-bottom: 64px;
}

.diagram-grid .diagram { margin-bottom: 16px; }

.diagram-grid .prose h3 {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  font-size: 26px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin-bottom: 18px;
}

.diagram-grid .prose p {
  font-size: 15px;
  color: var(--paper-soft);
  line-height: 1.65;
  margin-bottom: 14px;
}

.diagram-grid .prose p:last-child { margin-bottom: 0; }

/* =================================================================
   TIER-EXPLANATION CARDS (under the architecture diagram)
   ================================================================= */
.tier-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule);
  margin-top: 24px;
}

.tier-card {
  padding: 32px 32px 32px 0;
  border-bottom: 1px solid var(--rule);
}

.tier-card:nth-child(odd) { border-right: 1px solid var(--rule); padding-right: 32px; }
.tier-card:nth-child(even) { padding-left: 32px; padding-right: 0; }
.tier-card:nth-last-child(-n+2) { border-bottom: none; }

.tier-card-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--teal);
  margin-bottom: 14px;
}

.tier-card.flagship .tier-card-num { color: var(--teal-deep); }

.tier-card h4 {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  font-size: 22px;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin-bottom: 10px;
}

.tier-card.flagship h4 {
  color: var(--teal);
}

.tier-card p {
  font-size: 14px;
  color: var(--paper-soft);
  line-height: 1.6;
}

/* =================================================================
   ENGAGEMENT-PATTERN PAIR (two-up cards)
   ================================================================= */
.pattern-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.pattern-card {
  background: var(--ink);
  border: 1px solid var(--rule);
  padding: 40px 36px;
  position: relative;
}

.pattern-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 64px; height: 2px;
  background: var(--teal);
}

.pattern-card .label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--teal);
  margin-bottom: 22px;
}

.pattern-card h3 {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  font-size: 24px;
  line-height: 1.25;
  color: var(--paper);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.pattern-card p {
  font-size: 15px;
  color: var(--paper-soft);
  line-height: 1.65;
  margin-bottom: 12px;
}

.pattern-card p:last-child { margin-bottom: 0; }

.pattern-card .stamp {
  display: inline-block;
  margin-top: 18px;
  padding: 6px 12px;
  background: rgba(43, 180, 194, 0.1);
  color: var(--teal);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid rgba(43, 180, 194, 0.25);
}

/* =================================================================
   STATEMENT BAND — the "we enable, we do not compete" line, larger
   ================================================================= */
.statement-band {
  padding: 80px 0;
  text-align: center;
  background: var(--ink-soft);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.statement {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 36px;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
  max-width: 880px;
  margin: 0 auto;
}

.statement em { font-style: italic; color: var(--teal); }

/* Mobile responsive additions */
@media (max-width: 880px) {
  .page-hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .diagram-grid { grid-template-columns: 1fr; gap: 32px; }
  .tier-cards { grid-template-columns: 1fr; }
  .tier-card { padding: 28px 0 !important; border-right: none !important; }
  .pattern-grid { grid-template-columns: 1fr; }
  .diagram { padding: 24px; }
  .statement { font-size: 26px; }
}

/* =================================================================
   SECTION HUB LAYOUT — Lstore landing, Services landing, etc.
   Two-column: main content + right-rail navigation
   ================================================================= */
.hub-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 80px;
  align-items: start;
}

/* The right rail — sticky table of contents for the section */
.section-rail {
  position: sticky;
  top: 120px;
  padding: 32px 28px;
  background: var(--ink-soft);
  border: 1px solid var(--rule);
}

.section-rail h4 {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--rule);
}

.section-rail ol {
  list-style: none;
  counter-reset: rail;
  padding: 0;
  margin: 0;
}

.section-rail li {
  counter-increment: rail;
  margin-bottom: 18px;
  padding-left: 30px;
  position: relative;
}

.section-rail li:last-child { margin-bottom: 0; }

.section-rail li::before {
  content: counter(rail, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--paper-quiet);
}

.section-rail a {
  font-family: 'Fraunces', serif;
  font-size: 16px;
  font-weight: 400;
  color: var(--paper);
  text-decoration: none;
  display: block;
  line-height: 1.25;
  margin-bottom: 4px;
  transition: color 0.2s;
}

.section-rail a:hover { color: var(--teal); }

.section-rail .rail-desc {
  font-size: 12px;
  color: var(--paper-quiet);
  line-height: 1.45;
  font-family: 'IBM Plex Sans', sans-serif;
}

/* =================================================================
   SECTION HUB — section intro and editorial blocks
   ================================================================= */
.hub-intro {
  margin-bottom: 64px;
}

.hub-intro h2 {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 36px;
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--paper);
  margin-bottom: 24px;
}

.hub-intro h2 em { font-style: italic; color: var(--teal); }

.hub-intro p {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 19px;
  line-height: 1.55;
  color: var(--paper-soft);
  margin-bottom: 18px;
}

.hub-intro p:last-child { margin-bottom: 0; }

/* Pull-quote (Hammerspace stat) */
.hub-quote {
  border-left: 3px solid var(--teal);
  padding: 8px 0 8px 32px;
  margin: 40px 0;
}

.hub-quote .stat {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 56px;
  line-height: 1;
  color: var(--teal);
  margin-bottom: 14px;
  letter-spacing: -0.03em;
}

.hub-quote blockquote {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-style: italic;
  font-size: 18px;
  line-height: 1.5;
  color: var(--paper);
  margin-bottom: 14px;
}

.hub-quote .attrib {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--paper-quiet);
}

.hub-quote .attrib a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid var(--teal-shadow);
}

/* Editorial blocks within the hub */
.editorial {
  margin-bottom: 56px;
}

.editorial h3 {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  font-size: 26px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin-bottom: 18px;
}

.editorial h3 em { font-style: italic; color: var(--teal); }

.editorial p {
  font-size: 16px;
  line-height: 1.65;
  color: var(--paper-soft);
  margin-bottom: 16px;
}

.editorial p:last-child { margin-bottom: 0; }

/* Diagram inside hub */
.hub-diagram {
  margin: 48px 0;
}

.hub-diagram .diagram { margin-bottom: 16px; }

/* Subtle inline chip for "in this section" markers */
.in-section-chip {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  padding: 4px 10px;
  border: 1px solid var(--rule-strong);
  margin-right: 8px;
  margin-bottom: 6px;
  text-decoration: none;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

a.in-section-chip:hover {
  background-color: rgba(43, 180, 194, 0.08);
  border-color: var(--teal);
}

/* Mobile responsive */
@media (max-width: 1080px) {
  .hub-grid { grid-template-columns: 1fr; gap: 48px; }
  .section-rail { position: static; }
}

/* =================================================================
   ARCHITECTURE PAGE — section-specific styles
   ================================================================= */

/* Section number eyebrow — for numbered sections within an inner page */
.section-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.section-num .num {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-weight: 300;
  font-size: 22px;
  letter-spacing: 0;
  color: var(--paper);
  text-transform: none;
}

.section-num::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--rule);
  max-width: 200px;
}

/* Section heading — used inside inner-page content sections */
.section-h2 {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 40px;
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--paper);
  margin-bottom: 28px;
  max-width: 800px;
}

.section-h2 em {
  font-style: italic;
  color: var(--teal);
}

/* Section lede — the prose paragraph that introduces a section */
.section-lede {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 19px;
  line-height: 1.55;
  color: var(--paper-soft);
  margin-bottom: 56px;
  max-width: 720px;
}

/* Post-diagram editorial — short paragraph beneath a figure that
   points the reader forward into the rest of the page */
.post-diagram {
  margin-top: 56px;
  max-width: 720px;
}

.post-diagram p {
  font-size: 16px;
  line-height: 1.65;
  color: var(--paper-soft);
}

.post-diagram p em {
  font-style: italic;
  color: var(--paper);
}

/* Inline forward-pointer link — used in post-diagram and inline prose */
.fwd {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid var(--teal-shadow);
  transition: color 0.2s, border-color 0.2s;
}
.fwd:hover {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* =================================================================
   ARCHITECTURE PAGE — single-column inner-page layout
   The page hero and content are full-container-width; prose is
   constrained to a comfortable reading measure.
   ================================================================= */

/* Single-column page hero — no sidebar */
.page-hero-single {
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--rule);
}

.page-hero-single::before {
  content: '';
  position: absolute;
  top: -100px; right: -200px;
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(43, 180, 194, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.page-hero-single .crumb {
  margin-bottom: 24px;
}

.page-hero-single h1 {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: clamp(40px, 4.6vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin-bottom: 24px;
}

.page-hero-single h1 em {
  font-style: italic;
  color: var(--teal);
}

.page-hero-single .page-hero-lede {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 19px;
  line-height: 1.55;
  color: var(--paper-soft);
  max-width: 720px;
}

/* Reading-width container for prose inside full-width sections */
.read-width {
  max-width: 720px;
}

/* Forward pointer at the end of a section — directed motion to next section */
.next-section {
  margin-top: 80px;
  padding-top: 32px;
  border-top: 1px solid var(--rule);
  max-width: 720px;
}

.next-section a {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 22px;
  line-height: 1.3;
  color: var(--paper);
  text-decoration: none;
  display: block;
  transition: color 0.2s;
}

.next-section a:hover { color: var(--teal); }

.next-section a em {
  font-style: italic;
  color: var(--teal);
}

.next-section .label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper-quiet);
  margin-bottom: 12px;
  display: block;
}

/* =================================================================
   PAGE CONTENTS — secondary list of section destinations beneath
   the primary next-section pointer. Quiet treatment so it doesn't
   compete with the prominent forward pointer or the diagram above.
   ================================================================= */
.page-contents {
  margin-top: 32px;
  max-width: 720px;
}

.page-contents .label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper-quiet);
  margin-bottom: 16px;
  display: block;
}

.page-contents ol {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: pc;
}

.page-contents li {
  counter-increment: pc;
  padding: 4px 0;
  position: relative;
}

.page-contents a {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 16px;
  line-height: 1.5;
  color: var(--paper-soft);
  text-decoration: none;
  transition: color 0.2s;
  display: inline-block;
}

.page-contents a:hover {
  color: var(--teal);
}

.page-contents a em {
  font-style: italic;
}

/* =================================================================
   ARCHITECTURE PAGE — body prose & pull-quote styles for inner
   sections (Sections 2-8, prose-heavy)
   ================================================================= */

/* Body paragraphs — for prose that follows the lede in a section */
.section-body {
  max-width: 720px;
  margin-bottom: 32px;
}

.section-body p {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--paper-soft);
  margin-bottom: 22px;
}

.section-body p:last-child {
  margin-bottom: 0;
}

.section-body p em {
  font-style: italic;
  color: var(--paper);
}

/* Pull-quote — for emphasized editorial lines within a section */
.pull-quote {
  max-width: 720px;
  margin: 40px 0 40px;
  padding: 8px 0 8px 28px;
  border-left: 2px solid var(--teal);
}

.pull-quote p {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-style: italic;
  font-size: 22px;
  line-height: 1.45;
  color: var(--paper);
  margin: 0;
}

/* Section spacer — divides one section from the next */
.section-divider {
  margin: 96px 0 80px;
  height: 1px;
  background: var(--rule);
  max-width: 720px;
}


/* ============================================================
   SITE SEARCH — nav search box + instant results dropdown
   Self-contained; index fetched from search-index.json.
   ============================================================ */
.nav-search {
  position: relative;
  display: flex;
  align-items: center;
}
.nav-search-input {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 13px;
  color: var(--paper);
  background: var(--ink-soft);
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  padding: 8px 12px 8px 32px;
  width: 150px;
  letter-spacing: 0.02em;
  transition: width 0.2s ease, border-color 0.2s ease;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%232BB4C2' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='M21 21l-4.35-4.35'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: 10px center;
}
.nav-search-input::placeholder { color: var(--paper-quiet); }
.nav-search-input:focus {
  outline: none;
  border-color: var(--teal);
  width: 200px;
}
.nav-search-input:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}
.nav-search-results {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 360px;
  max-height: 70vh;
  overflow-y: auto;
  background: var(--ink-lifted);
  border: 1px solid var(--rule-strong);
  border-radius: 3px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.5);
  display: none;
  z-index: 200;
}
.nav-search-results.open { display: block; }
.nsr-item {
  display: block;
  padding: 14px 16px;
  border-bottom: 1px solid var(--rule);
  text-decoration: none;
  transition: background 0.15s ease;
}
.nsr-item:last-child { border-bottom: none; }
.nsr-item:hover, .nsr-item.active { background: var(--ink-soft); }
.nsr-title {
  font-family: 'Fraunces', serif;
  font-size: 15px;
  color: var(--paper);
  margin-bottom: 4px;
}
.nsr-snippet {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--paper-soft);
}
.nsr-snippet mark {
  background: rgba(43,180,194,0.25);
  color: var(--paper);
  padding: 0 1px;
}
.nsr-empty {
  padding: 18px 16px;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 13px;
  color: var(--paper-quiet);
}
@media (max-width: 880px) {
  .nav-search { display: none; }
}
/* ============================================================
   END SITE SEARCH
   ============================================================ */

/* ============================================================
   CONSOLIDATED SHARED COMPONENTS
   Promoted from per-page inline <style> blocks (2026-05-26).
   Used across multiple technical pages; defined once here.
   ============================================================ */

/* Code / command block — used on exnode, lserver, operations,
   reliability, resources (terminal output, signatures, commands). */
.code-block {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  line-height: 1.65;
  color: var(--paper);
  background: var(--ink-soft);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--teal-shadow);
  padding: 20px 24px;
  margin: 24px 0;
  overflow-x: auto;
  white-space: pre;
  max-width: 720px;
}
.code-block .comment { color: var(--paper-quiet); font-style: italic; }
.code-block .kw { color: var(--teal); }
.code-block .path { color: var(--paper); }

/* Chip row — pill-style navigation links at section ends.
   Used on engagement, provenance, partners, services. */
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 8px 0;
}
.chip-row a {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--teal);
  text-decoration: none;
  border: 1px solid var(--teal-shadow);
  border-radius: 2px;
  padding: 7px 14px;
  transition: background 0.2s, color 0.2s;
}
.chip-row a:hover { background: var(--teal-shadow); color: var(--paper); }

/* Policy / objective table — used on operations, resources. */
.op-table {
  width: 100%;
  max-width: 720px;
  border-collapse: collapse;
  margin: 24px 0;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
}
.op-table th {
  text-align: left;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--teal);
  text-transform: uppercase;
  font-weight: 500;
  padding: 12px 16px 12px 0;
  border-bottom: 1px solid var(--paper);
}
.op-table td {
  padding: 14px 16px 14px 0;
  border-bottom: 1px solid var(--rule);
  color: var(--paper-soft);
  line-height: 1.55;
  vertical-align: top;
}
.op-table td:first-child {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  color: var(--paper);
  width: 240px;
}
/* ============================================================
   END CONSOLIDATED SHARED COMPONENTS
   ============================================================ */
/* ============================================================
   TEMP PROPRIETARY BANNER — REMOVE BEFORE PUBLIC GO-LIVE
   Self-contained. Delete this block and the matching
   <!-- TEMP BANNER START/END --> markup in each .html file.
   ============================================================ */
.temp-proprietary-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: #8B0000;
  color: #FFFFFF;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-align: center;
  padding: 11px 16px;
  text-transform: uppercase;
  border-top: 2px solid #FFD23F;
  box-shadow: 0 -3px 14px rgba(0,0,0,0.35);
}
.temp-proprietary-banner strong { color: #FFD23F; font-weight: 700; }
/* Keep the fixed banner from covering footer content */
body { padding-bottom: 46px; }
/* ============================================================
   END TEMP PROPRIETARY BANNER
   ============================================================ */


/* ============ ACCESSIBILITY ============ */
/* Item 3 — consistent high-contrast keyboard focus (teal on dark ink ≈ 7.4:1) */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
  border-radius: 2px;
}

/* Item 5 — visually-hidden utility for screen-reader-only text */
.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;
}

/* Item 1 — skip-to-content link: hidden until keyboard-focused, then visible */
.sr-only-focusable {
  position: absolute;
  left: 8px;
  top: 8px;
  z-index: 1000;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}
.sr-only-focusable:focus {
  width: auto;
  height: auto;
  clip: auto;
  padding: 10px 16px;
  background: var(--teal);
  color: var(--ink);
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 600;
  text-decoration: none;
  border-radius: 4px;
  outline: 2px solid var(--paper);
  outline-offset: 2px;
}