:root {
  --bg: #101418;
  --fg: #d6dde4;
  --accent: #5eb0ef;
  --muted: #7a8188;
  --card: #171c22;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

nav {
  display: flex;
  gap: 1.5rem;
  padding: 1rem 2rem;
  border-bottom: 1px solid #262d35;
}

nav a {
  color: var(--fg);
  text-decoration: none;
  font-weight: 500;
}

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

.logo { font-weight: 700; margin-right: auto; color: var(--accent); }

main {
  max-width: 720px;
  width: 90%;
  margin: 3rem auto;
  flex: 1;
}

h1, h2 { line-height: 1.25; }

article {
  background: var(--card);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  margin: 1.25rem 0;
}

article h2 { font-size: 1.1rem; margin-top: 0; }

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

code {
  background: #1f262d;
  padding: 0 0.35em;
  border-radius: 4px;
  font-size: 0.92em;
}

ul { padding-left: 1.25rem; }
ul li { margin: 0.4rem 0; }

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

footer {
  border-top: 1px solid #262d35;
  padding: 1rem 2rem;
  color: var(--muted);
  font-size: 0.85rem;
}