:root {
  --bg: #fafaf8;
  --fg: #1c1c1a;
  --muted: #62625c;
  --accent: #1f5f8b;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161614;
    --fg: #ecece6;
    --muted: #a0a099;
    --accent: #7db8e0;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--fg);
  font: 1.0625rem/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main {
  flex: 1;
  width: 100%;
  max-width: 40rem;
  margin: 0 auto;
  padding: 4rem 1rem 2rem;
}

h1 { font-size: 2.25rem; margin: 0 0 0.5rem; }
h2 { font-size: 1.125rem; margin: 2.5rem 0 0.75rem; }
section p { margin: 0 0 0.5rem; }
.tagline { color: var(--muted); margin: 0; }

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

footer {
  padding: 1.5rem 1rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.875rem;
}