body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  margin: 0;
  background-color: #f9fafb;
  color: #111827;
}

.container {
  max-width: 720px;
  margin: 80px auto;
  padding: 0 20px;
}

h1 {
  font-size: 2rem;
  margin-bottom: 10px;
}

h2 {
  margin-top: 40px;
}

a {
  color: #2563eb;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.card {
  background: white;
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.05);
  margin-top: 20px;
}