@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:opsz,wght@8..60,400;8..60,600;8..60,700&family=Inter:wght@400;500;600&display=swap');

:root {
  --paper: #f5f3ee;
  --paper-raised: #ede9e0;
  --ink: #211f1c;
  --ink-soft: #524d44;
  --gold: #a97f1f;
  --gold-dark: #7c5c15;
  --teal: #2f5d62;
  --rule: #d9d3c4;
  --max-width: 700px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Inter', sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

a { color: var(--teal); text-decoration-color: rgba(47,93,98,0.35); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--teal); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--gold-dark); outline-offset: 3px; }

h1, h2, h3 {
  font-family: 'Source Serif 4', serif;
  font-weight: 600;
  line-height: 1.2;
  color: var(--ink);
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2rem, 5vw, 2.9rem); font-weight: 700; }
h2 { font-size: 1.5rem; margin-top: 2.2em; }
h3 { font-size: 1.15rem; margin-top: 1.6em; }

p { margin: 0 0 1.2em; }
ul, ol { padding-left: 1.3em; }
li { margin-bottom: 0.5em; }

.site-header {
  border-bottom: 1px solid var(--rule);
  padding: 1.1rem 1.5rem;
}

.site-header nav {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  font-family: 'Source Serif 4', serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink);
  text-decoration: none;
}

.brand:hover { text-decoration: none; color: var(--gold-dark); }

.site-header .menu {
  display: flex;
  gap: 1.2rem;
  font-size: 0.92rem;
}

.site-header .menu a {
  color: var(--ink-soft);
  text-decoration: none;
}

.site-header .menu a:hover { color: var(--teal); }

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

.eyebrow-plain {
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin-bottom: 0.3em;
}

.lede {
  font-size: 1.2rem;
  color: var(--ink-soft);
  margin-bottom: 1.8em;
}

.chapter-list {
  list-style: none;
  padding: 0;
  margin: 1.5em 0 2.5em;
  border-top: 1px solid var(--rule);
}

.chapter-list li {
  border-bottom: 1px solid var(--rule);
  margin: 0;
}

.chapter-list a {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 0.95rem 0;
  text-decoration: none;
  color: var(--ink);
}

.chapter-list a:hover .chapter-title { color: var(--teal); }

.chapter-num {
  font-family: 'Source Serif 4', serif;
  color: var(--gold-dark);
  font-size: 1rem;
  flex-shrink: 0;
  width: 1.6em;
}

.chapter-title { font-weight: 500; flex-grow: 1; }
.chapter-desc { color: var(--ink-soft); font-size: 0.88rem; display: block; margin-top: 0.15em; }

.callout {
  background: var(--paper-raised);
  border-left: 3px solid var(--gold);
  padding: 1rem 1.3rem;
  margin: 1.8em 0;
  border-radius: 2px;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 0.95rem;
}

th, td {
  text-align: left;
  padding: 0.6em 0.8em;
  border-bottom: 1px solid var(--rule);
}

th { font-family: 'Source Serif 4', serif; font-weight: 600; }

.page-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  font-size: 0.95rem;
}

.page-nav a { text-decoration: none; }

.site-footer {
  border-top: 1px solid var(--rule);
  padding: 2rem 1.5rem;
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.85rem;
}

.site-footer a { color: var(--ink-soft); }

details {
  border-bottom: 1px solid var(--rule);
  padding: 0.9em 0;
}

details summary {
  font-family: 'Source Serif 4', serif;
  font-weight: 600;
  cursor: pointer;
  font-size: 1.05rem;
}

details p { margin-top: 0.8em; }