:root {
  --bg: #0e1116;
  --fg: #e6edf3;
  --muted: #9da7b3;
  --accent: #58a6ff;
  --accent-soft: #1f6feb;
  --card: #161b22;
}

body {
  margin: 0;
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 4rem 1.25rem;
}

nav {
  margin: 2rem 0 3rem;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-right: 1.25rem;
}

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

.card {
  background: var(--card);
  padding: 1.5rem;
  border-radius: 12px;
  margin: 1.5rem 0;
}

code,
pre {
  background: #0b0f14;
  color: #c9d1d9;
  padding: 0.2em 0.4em;
  border-radius: 6px;
}

pre {
  padding: 1rem;
  overflow-x: auto;
}

footer {
  margin-top: 4rem;
  color: var(--muted);
  font-size: 0.9rem;
}