/* FB Processing — shared site styles
   No external fonts or scripts: system font stacks only, so this ships
   under the current self-only Content-Security-Policy with no changes. */

:root {
  --bg: #EEF0F2;
  --surface: #FFFFFF;
  --text: #1B2430;
  --text-muted: #5A6472;
  --accent: #24476B;
  --accent-hover: #1B3552;
  --border: #D7DBE0;
  --mono: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
  --serif: Georgia, "Times New Roman", Times, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
}

a { color: var(--accent); }
a:hover { color: var(--accent-hover); }

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
  padding-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}
.logo-lockup {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  text-decoration: none;
}
.logo-mark {
  height: 36px;
  width: auto;
  display: block;
}
.logo-word {
  font-family: var(--sans);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}
.site-nav {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.site-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--text);
}

/* Hero */
.hero {
  padding: 72px 0 56px;
}
.hero h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1.18;
  margin: 0 0 20px;
  max-width: 15ch;
}
.hero p.lede {
  color: var(--text-muted);
  font-size: 1.15rem;
  max-width: 55ch;
  margin: 0 0 32px;
}
.cta-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 12px 22px;
  font-family: var(--sans);
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid var(--accent);
  border-radius: 2px;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #fff; }
.btn-secondary {
  background: transparent;
  color: var(--accent);
  border-color: var(--border);
}
.btn-secondary:hover { border-color: var(--accent); }

/* Prose sections */
.section {
  padding: 48px 0;
}
.section-tight { padding: 32px 0; }
.section h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.6rem;
  margin: 0 0 18px;
}
.section p {
  color: var(--text-muted);
  max-width: 68ch;
}

hr.rule {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* Ledger rows (capability lists) */
.ledger {
  border-top: 1px solid var(--border);
}
.ledger-row {
  display: flex;
  gap: 24px;
  padding: 30px 0;
  border-bottom: 1px solid var(--border);
}
.ledger-code {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--accent);
  width: 52px;
  flex-shrink: 0;
  padding-top: 5px;
}
.ledger-content h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.2rem;
  margin: 0 0 8px;
}
.ledger-content p {
  color: var(--text-muted);
  margin: 0 0 12px;
  max-width: 62ch;
}
.ledger-content ul {
  margin: 0;
  padding-left: 20px;
  color: var(--text-muted);
  font-size: 0.95rem;
}
.ledger-content li { margin-bottom: 6px; }

.badge-soon {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 2px 9px;
  margin-left: 10px;
  vertical-align: middle;
}

.arch-diagram {
  display: block;
  width: 100%;
  height: auto;
  max-width: 620px;
  margin: 36px auto 0;
}

/* Closing CTA band */
.cta-band {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 56px 0;
  text-align: left;
}
.cta-band h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.5rem;
  margin: 0 0 14px;
}
.cta-band p {
  color: var(--text-muted);
  max-width: 60ch;
  margin: 0 0 24px;
}

/* Footer */
.site-footer {
  padding: 32px 0 48px;
}
.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.88rem;
  color: var(--text-muted);
}
.site-footer a { color: var(--text-muted); margin-left: 16px; }
.site-footer a:first-child { margin-left: 0; }
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-mark {
  height: 18px;
  width: auto;
  display: block;
}

/* About / narrative page */
.narrative p {
  max-width: 68ch;
  margin: 0 0 20px;
}
.contact-block {
  border-top: 1px solid var(--border);
  padding-top: 32px;
  margin-top: 12px;
}
.contact-list {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
}
.contact-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.contact-list .label {
  color: var(--text-muted);
  width: 140px;
  flex-shrink: 0;
  font-size: 0.92rem;
}
.contact-list a { font-family: var(--mono); font-size: 0.95rem; }

/* Legal document page (Privacy + Terms) */
.legal-nav {
  display: flex;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
  font-size: 0.9rem;
}
.legal h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.9rem;
  margin: 48px 0 6px;
}
.legal .updated {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin: 0 0 28px;
}
.legal h2 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 1.05rem;
  margin: 32px 0 10px;
}
.legal p, .legal li {
  color: var(--text);
  max-width: 70ch;
}
.legal ul { padding-left: 20px; }
.legal strong { font-weight: 600; }

/* Page-specific tweaks (moved out of inline style="" for CSP compliance) */
.h1-page {
  font-size: clamp(1.8rem, 4vw, 2.3rem);
  max-width: none;
}
.hero-pb-sm { padding-bottom: 8px; }
.hero-pb-md { padding-bottom: 24px; }
.h2-compact {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.3rem;
  margin-bottom: 4px;
}
.section-lead-compact {
  color: var(--text-muted);
  margin-top: 0;
}
.emphasis {
  color: var(--text);
  font-weight: 600;
}
.rule-spaced { margin: 48px 0; }

@media (max-width: 560px) {
  body { font-size: 16px; }
  .ledger-row { flex-direction: column; gap: 8px; }
  .ledger-code { width: auto; }
  .contact-list li { flex-direction: column; gap: 2px; }
  .contact-list .label { width: auto; }
}