:root {
  color-scheme: light dark;
  --fg: #1a1a1a;
  --bg: #fafafa;
  --accent: #0052cc;
  --muted: #555;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #f0f0f0;
    --bg: #121212;
    --accent: #4c9aff;
    --muted: #aaa;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

header h1 {
  margin: 0 0 0.25rem;
  font-size: 2rem;
}

.tagline {
  color: var(--muted);
  margin: 0 0 2rem;
}

section h2 {
  font-size: 1.25rem;
  margin: 2rem 0 0.75rem;
}

.links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.links li {
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(127, 127, 127, 0.2);
}

.links li:last-child { border-bottom: none; }

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

.links a:hover { text-decoration: underline; }

footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(127, 127, 127, 0.2);
  color: var(--muted);
  font-size: 0.9rem;
}