:root {
  color-scheme: light dark;
  --text: #1a1a1a;
  --muted: #5c5c5c;
  --accent: #2563eb;
  --bg: #ffffff;
  --card: #f6f7f9;
  --border: #e5e7eb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --text: #f3f4f6;
    --muted: #9ca3af;
    --accent: #60a5fa;
    --bg: #0f1115;
    --card: #171a21;
    --border: #2a2f3a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

h1 {
  margin: 0 0 8px;
  font-size: 1.75rem;
  letter-spacing: -0.02em;
}

.updated {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

h2 {
  margin: 28px 0 10px;
  font-size: 1.1rem;
}

p, li { color: var(--text); }

p { margin: 0 0 14px; }

ul { margin: 0 0 14px; padding-left: 1.25rem; }

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

nav.links {
  margin-top: 12px;
  font-size: 0.95rem;
}

nav.links a { margin-right: 16px; }

footer {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}