:root {
  --bg: #0f1115;
  --card: #171a21;
  --text: #f2f3f5;
  --muted: #9aa1ac;
  --accent: #4f8cff;
}

* { box-sizing: border-box; }

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

.hero {
  padding: 5rem 1.5rem 3rem;
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  margin: 0 0 0.5rem;
}

.tagline {
  color: var(--muted);
  font-size: 1.1rem;
}

main {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
  display: grid;
  gap: 1.25rem;
}

.card {
  background: var(--card);
  border-radius: 12px;
  padding: 1.5rem;
  border: 1px solid #262a33;
}

.card h2 {
  margin-top: 0;
  color: var(--accent);
  font-size: 1.1rem;
}

footer {
  text-align: center;
  color: var(--muted);
  padding: 2rem 0;
  font-size: 0.85rem;
}