/* Chapter layout — static pre-rendered pages (see scripts/build-guide-static.mjs) */

.ch-wrap {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr) 220px;
  gap: 48px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 44px 32px 60px;
}
@media (max-width: 1100px) {
  .ch-wrap { grid-template-columns: minmax(0, 1fr); gap: 0; padding: 32px 22px 50px; }
  .ch-rail, .ch-toc-rail { display: none; }
}

.ch-rail {
  position: sticky;
  top: 90px;
  align-self: start;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
  padding-right: 6px;
  font-size: 13px;
}
.ch-rail::-webkit-scrollbar { width: 6px; }
.ch-rail::-webkit-scrollbar-thumb { background: var(--vc-border); border-radius: 3px; }
.ch-rail-eye {
  font-family: var(--vc-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--vc-fg-faint);
  margin: 16px 0 8px;
  font-weight: 600;
}
.ch-rail-eye:first-child { margin-top: 0; }
.ch-rail a {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 10px;
  padding: 6px 8px;
  border-radius: 6px;
  color: var(--vc-fg-muted);
  font-size: 13px;
  line-height: 1.3;
  text-decoration: none;
  transition: color 0.15s, background 0.15s;
}
.ch-rail a:hover { color: var(--vc-fg); background: var(--vc-bg-soft); }
.ch-rail a.active { color: var(--vc-fg); background: color-mix(in oklch, var(--vc-primary) 16%, transparent); }
.ch-rail a.active .ch-rail-n { color: var(--vc-primary-2); }
.ch-rail-n { font-family: var(--vc-mono); font-size: 11px; color: var(--vc-fg-faint); padding-top: 1px; }

.ch-article {
  min-width: 0;
  font-size: 18px;
  line-height: 1.75;
  color: var(--vc-fg-soft);
}

.ch-header { margin-bottom: 44px; padding-bottom: 32px; border-bottom: 1px solid var(--vc-border); }
.ch-header .crumb {
  font-family: var(--vc-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--vc-primary-2);
  margin-bottom: 18px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}
.ch-header .crumb a { color: var(--vc-primary-2); }
.ch-header .crumb span { color: var(--vc-fg-faint); }
.ch-header h1 {
  font-family: var(--vc-serif);
  font-size: clamp(38px, 5.5vw, 60px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  font-weight: 500;
  margin: 0 0 14px;
  color: var(--vc-fg);
  text-wrap: balance;
}
.ch-header .ch-kicker {
  font-family: var(--vc-serif);
  font-style: italic;
  font-size: clamp(17px, 2vw, 21px);
  color: var(--vc-fg-soft);
  line-height: 1.4;
  max-width: 640px;
  text-wrap: balance;
  margin: 0;
}
.ch-header .ch-meta {
  margin-top: 26px;
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  font-family: var(--vc-mono);
  font-size: 12px;
  color: var(--vc-fg-muted);
}
.ch-header .ch-meta b { color: var(--vc-fg); font-weight: 500; }

.ch-body h1, .ch-body h2 {
  font-family: var(--vc-serif);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--vc-fg);
  line-height: 1.15;
  margin: 56px 0 18px;
  text-wrap: balance;
}
.ch-body h1 { display: none; }
.ch-body h2 { font-size: 30px; padding-top: 12px; }
.ch-body h3 {
  font-family: var(--vc-serif);
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--vc-fg);
  font-size: 22px;
  line-height: 1.3;
  margin: 36px 0 10px;
}
.ch-body h4 {
  font-family: var(--vc-sans);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.01em;
  color: var(--vc-fg);
  margin: 28px 0 8px;
}
.ch-body p { margin: 0 0 22px; text-wrap: pretty; }
.ch-body strong { color: var(--vc-fg); font-weight: 600; }
.ch-body em { color: var(--vc-fg-soft); }
.ch-body a {
  color: var(--vc-primary-2);
  text-decoration: underline;
  text-decoration-color: color-mix(in oklch, var(--vc-primary) 40%, transparent);
  text-underline-offset: 3px;
}
.ch-body a:hover { color: var(--vc-fg); text-decoration-color: var(--vc-fg); }
.ch-body a[data-rewardful],
.ch-body a[href^="https://buy.stripe.com/"] {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 4px 0 10px;
  padding: 12px 18px;
  border-radius: 10px;
  background: var(--vc-primary);
  color: #fff;
  font-family: var(--vc-sans);
  font-size: 15px;
  font-weight: 600;
  font-style: normal;
  line-height: 1.2;
  text-decoration: none;
  box-shadow: 0 8px 24px -10px var(--vc-primary), inset 0 1px 0 rgba(255,255,255,0.18);
}
.ch-body a[data-rewardful]:hover,
.ch-body a[href^="https://buy.stripe.com/"]:hover {
  background: var(--vc-primary-2);
  color: #fff;
  text-decoration: none;
}
.ch-body code {
  font-family: var(--vc-mono);
  font-size: 0.88em;
  background: var(--vc-bg-elev);
  border: 1px solid var(--vc-border);
  padding: 1px 6px;
  border-radius: 5px;
  color: var(--vc-primary-2);
}
.ch-body pre {
  background: #090B1A;
  border: 1px solid var(--vc-border);
  border-radius: 12px;
  padding: 18px 20px;
  overflow-x: auto;
  margin: 24px 0;
}
.ch-body pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: var(--vc-fg-soft);
  font-size: 13px;
  line-height: 1.6;
}
.ch-body hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--vc-border) 20%, var(--vc-border) 80%, transparent);
  margin: 44px 0;
}
.ch-body ul, .ch-body ol { margin: 0 0 24px; padding-left: 24px; }
.ch-body li { margin-bottom: 10px; padding-left: 4px; }
.ch-body li::marker { color: var(--vc-primary-2); }
.ch-body blockquote {
  margin: 32px 0;
  padding: 22px 26px;
  background: color-mix(in oklch, var(--vc-primary) 10%, transparent);
  border-left: 3px solid var(--vc-primary);
  border-radius: 10px;
  font-family: var(--vc-serif);
  font-style: italic;
  font-size: 19px;
  line-height: 1.55;
  color: var(--vc-fg);
}
.ch-body blockquote p { margin-bottom: 12px; }
.ch-body blockquote p:last-child { margin-bottom: 0; }
.ch-body blockquote strong { font-style: normal; color: var(--vc-primary-2); }

.ch-body h2 {
  counter-increment: section;
  position: relative;
}
.ch-body h2::before {
  content: "§" counter(section);
  position: absolute;
  top: 6px;
  left: -64px;
  font-family: var(--vc-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--vc-fg-faint);
  font-weight: 600;
}
@media (max-width: 1300px) { .ch-body h2::before { display: none; } }
.ch-body { counter-reset: section; }

.ch-toc-rail {
  position: sticky;
  top: 90px;
  align-self: start;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
  font-size: 13px;
}
.ch-toc-eye {
  font-family: var(--vc-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--vc-fg-faint);
  font-weight: 600;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--vc-border);
}
.ch-toc-rail a {
  display: block;
  padding: 6px 10px;
  border-radius: 6px;
  color: var(--vc-fg-muted);
  border-left: 2px solid transparent;
  line-height: 1.35;
  margin-bottom: 2px;
  font-size: 12.5px;
  text-decoration: none;
  transition: color 0.15s, border-color 0.15s;
}
.ch-toc-rail a:hover { color: var(--vc-fg); }

.ch-nav {
  margin-top: 56px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 720px) { .ch-nav { grid-template-columns: 1fr; } }
.ch-nav a {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px 24px;
  border: 1px solid var(--vc-border);
  border-radius: 14px;
  background: color-mix(in oklch, var(--vc-bg-elev) 60%, transparent);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.15s, transform 0.15s;
}
.ch-nav a:hover { border-color: var(--vc-primary); transform: translateY(-2px); }
.ch-nav a.next { text-align: right; }
.ch-nav .eye {
  font-family: var(--vc-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--vc-fg-muted);
  font-weight: 600;
}
.ch-nav .t {
  font-family: var(--vc-serif);
  font-size: 20px;
  font-weight: 500;
  color: var(--vc-fg);
  letter-spacing: -0.01em;
  line-height: 1.25;
}
.ch-nav .disabled { opacity: 0.35; pointer-events: none; }

.vc-header .vc-brand-mark {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  object-fit: contain;
  background: transparent;
  box-shadow: none;
}

/* Hide chapter body until reader gate unlocks (see guide-shell.js) */
body.guide-locked .ch-wrap {
  display: none;
}

html.guide-unlocked #vc-gate-root,
body.guide-unlocked #vc-gate-root {
  display: none !important;
}