:root {
  --cream: #FDF7F0; --card: #FFFCF7; --ink: #2F2B27; --ink-body: #3C3936;
  --ink-soft: #6E645B; --ink-faint: #9A8C7E; --terracotta: #BF603D;
  --terracotta-deep: #A44E2F; --line: #ECDFCF;
  --serif: ui-serif, "Iowan Old Style", "Palatino Linotype", Palatino, "Times New Roman", Georgia, serif;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--cream); color: var(--ink-body);
  font-family: var(--sans); line-height: 1.62; -webkit-font-smoothing: antialiased;
}
a { color: var(--terracotta); text-decoration: none; }
a:hover { color: var(--terracotta-deep); text-decoration: underline; text-underline-offset: 2px; }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 22px; }

header.site { border-bottom: 1px solid var(--line); background: rgba(253,247,240,0.9); backdrop-filter: blur(8px); position: sticky; top: 0; z-index: 10; }
header.site .nav { display: flex; align-items: center; justify-content: space-between; height: 62px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { height: 28px; width: auto; display: block; }
.brand b { font-family: var(--serif); font-size: 20px; color: var(--ink); font-weight: 600; }
.back { font-size: 14px; color: var(--ink-soft); font-weight: 550; }

main { padding: 40px 0 20px; }
h1 { font-family: var(--serif); font-size: 40px; font-weight: 600; letter-spacing: -0.01em; color: var(--ink); margin: 0 0 8px; }
.updated { font-size: 13px; text-transform: uppercase; letter-spacing: .07em; color: var(--ink-faint); margin: 0 0 6px; }
.doc-links { font-size: 14px; color: var(--ink-soft); margin: 0 0 28px; }
.doc-links a { font-weight: 600; }
.intro { font-size: 17px; color: var(--ink-soft); }

.doc h2 { font-family: var(--serif); font-size: 24px; font-weight: 600; color: var(--ink); margin: 40px 0 12px; letter-spacing: -0.01em; }
.doc h3 { font-size: 16px; font-weight: 700; color: var(--ink); margin: 22px 0 6px; }
.doc p { margin: 0 0 14px; color: var(--ink-body); font-size: 16px; }
.doc ul { margin: 0 0 14px; padding-left: 22px; }
.doc li { margin: 6px 0; color: var(--ink-body); font-size: 16px; }
.doc .lead { font-size: 17px; }

footer.site { border-top: 1px solid var(--line); margin-top: 48px; padding: 32px 0 60px; text-align: center; color: var(--ink-faint); font-size: 14px; }
footer.site a { color: var(--ink-soft); font-weight: 550; margin: 0 8px; }
footer.site p { margin: 8px 0; }

@media (max-width: 640px) {
  h1 { font-size: 32px; }
  .doc h2 { font-size: 21px; }
  main { padding: 28px 0 10px; }
}