:root {
  --bg: #0d1117;
  --text: #c9d1d9;
  --muted: #8b949e;
  --accent: #58a6ff;
  --border: #30363d;
}

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, sans-serif;
  line-height: 1.65;
}

main {
  max-width: 900px;
  margin: auto;
  padding: 3rem 2rem;
}

h1, h2, h3 {
  color: white;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

footer {
  border-top: 1px solid var(--border);
  margin-top: 4rem;
  padding-top: 2rem;
  text-align: center;
  color: var(--muted);
}