:root {
  --bg: #fafafa;
  --text: #222;
  --muted: #666;
  --accent: #444;
  --border: #e2e2e2;
}

* { box-sizing: border-box; }

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

.container {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  border-bottom: 1px solid var(--border);
  padding: 24px 0;
}

header h1 {
  margin: 0 0 8px 0;
  font-size: 1.4rem;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-right: 16px;
  font-size: 0.95rem;
}

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

main {
  padding: 40px 0;
}

article {
  margin-bottom: 40px;
}

article h2 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

article p {
  color: #333;
}

footer {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  color: var(--muted);
  font-size: 0.85rem;
}