:root {
  --bg: #ffffff;
  --text: #1f2328;
  --muted: #59636e;
  --accent: #0b5cad;
  --code-bg: #f3f4f6;
  --rule: #d8dee4;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418;
    --text: #e6e8eb;
    --muted: #a3acb6;
    --accent: #6cb2ff;
    --code-bg: #1d2228;
    --rule: #2f363e;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

main, footer {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 16px;
}

main { padding-top: 40px; padding-bottom: 24px; }

.brand { font-weight: 700; letter-spacing: 0.02em; margin: 0 0 32px; }
.brand a { color: var(--text); text-decoration: none; }

h1 { font-size: 1.9rem; line-height: 1.25; margin: 0 0 16px; }
h2 { font-size: 1.2rem; margin: 32px 0 8px; }
.lead { font-size: 1.1rem; color: var(--muted); }

a { color: var(--accent); }
ul { padding-left: 1.2em; }
li { margin: 6px 0; }

code {
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85em;
  overflow-wrap: anywhere;
}

footer {
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.9rem;
  padding-top: 16px;
  padding-bottom: 40px;
}