:root {
  --ink: oklch(24% 0.025 50);
  --ink-muted: oklch(40% 0.035 50);
  --ink-soft: oklch(47% 0.03 50);
  --surface: oklch(98% 0.012 80);
  --surface-alt: oklch(95% 0.017 78);
  --border: oklch(88% 0.018 70);
  --brand: oklch(34% 0.13 325);
  --warn-bg: oklch(96% 0.035 55);
  --warn-border: oklch(84% 0.07 50);
  --warn-ink: oklch(58% 0.16 45);
  --serif: 'Fraunces', Georgia, serif;
  --sans: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: oklch(93% 0.012 50);
    --ink-muted: oklch(78% 0.02 50);
    --ink-soft: oklch(68% 0.02 50);
    --surface: oklch(18% 0.014 50);
    --surface-alt: oklch(23% 0.016 50);
    --border: oklch(33% 0.02 50);
    --brand: oklch(75% 0.12 325);
    --warn-bg: oklch(30% 0.05 55);
    --warn-border: oklch(42% 0.08 50);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --ink: oklch(93% 0.012 50);
  --ink-muted: oklch(78% 0.02 50);
  --ink-soft: oklch(68% 0.02 50);
  --surface: oklch(18% 0.014 50);
  --surface-alt: oklch(23% 0.016 50);
  --border: oklch(33% 0.02 50);
  --brand: oklch(75% 0.12 325);
  --warn-bg: oklch(30% 0.05 55);
  --warn-border: oklch(42% 0.08 50);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--surface);
  line-height: 1.6;
}
.draft-banner {
  margin: 0;
  padding: 0.6rem 1.5rem;
  background: var(--warn-bg);
  border-bottom: 1px solid var(--warn-border);
  color: var(--warn-ink);
  font-size: 0.9rem;
  text-align: center;
}
.guide-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}
.guide-header .brand {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--ink);
  text-decoration: none;
}
.guide-header .back {
  color: var(--ink-muted);
  text-decoration: none;
  font-size: 0.95rem;
}
.guide-header a:hover { color: var(--brand); }
.guide-article {
  max-width: 680px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}
.guide-article h1 {
  font-family: var(--serif);
  font-size: 1.9rem;
  line-height: 1.25;
  margin: 0 0 1.5rem;
}
.guide-article h2 {
  font-family: var(--serif);
  font-size: 1.3rem;
  margin: 2rem 0 0.75rem;
}
.guide-article p { margin: 0 0 1rem; color: var(--ink-soft); }
.guide-article strong { color: var(--ink); }
.guide-article code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.1em 0.35em;
}
.guide-article .guide-cta { margin-top: 2rem; font-weight: 600; }
.guide-article .guide-cta a { color: var(--brand); }
.guide-list { list-style: none; padding: 0; margin: 0; }
.guide-list li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}
.guide-list a {
  font-family: var(--serif);
  font-size: 1.1rem;
  color: var(--ink);
  text-decoration: none;
}
.guide-list a:hover { color: var(--brand); }
.guide-list p { margin: 0.35rem 0 0; color: var(--ink-muted); font-size: 0.95rem; }
.draft-tag {
  font-size: 0.75rem;
  color: var(--warn-ink);
  border: 1px solid var(--warn-border);
  background: var(--warn-bg);
  border-radius: 3px;
  padding: 0.05em 0.4em;
  vertical-align: middle;
}