body {
  font-family: sans-serif;
  margin: 0;
  padding: 0;
  background: #f7f7f7;
  color: #333;
}
main {
  text-align: center;
  padding: 2rem;
}
.hero {
  background: #f0f0f0;
  padding: 2rem;
}
.cta {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.75rem 1.5rem;
  background: #000;
  color: #fff;
  text-decoration: none;
  border-radius: 0.5rem;
}
.features {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}
.card {
  background: #fff;
  padding: 1rem;
  border-radius: 0.75rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  width: 300px;
}
footer {
  margin-top: 2rem;
  font-size: 0.85rem;
  color: #777;
}