body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  margin: 0;
  background: #0f172a;
  color: #e2e8f0;
}

header {
  background: #020617;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid #1e293b;
}

header h1 {
  margin: 0;
  font-size: 1.8rem;
}

nav {
  margin-top: 0.5rem;
}

nav a {
  color: #38bdf8;
  text-decoration: none;
  margin-right: 1.2rem;
}

main {
  max-width: 900px;
  margin: 3rem auto;
  padding: 0 1.5rem;
}

.hero h2 {
  font-size: 2rem;
}

.button {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.7rem 1.2rem;
  background: #38bdf8;
  color: #0f172a;
  text-decoration: none;
  border-radius: 6px;
  font-weight: 600;
}

footer {
  text-align: center;
  padding: 2rem;
  font-size: 0.9rem;
  color: #94a3b8;
  border-top: 1px solid #1e293b;
}