body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f9f9f9;
  color: #333;
}
.container {
  padding: 2rem;
  max-width: 1000px;
  margin: auto;
}
.hero {
  text-align: center;
  margin-bottom: 3rem;
}
.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}
.hero p {
  font-size: 1.2rem;
}
.btn {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.5rem 1.2rem;
  background: #444;
  color: white;
  text-decoration: none;
  border-radius: 4px;
}
.cards {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
}
.card {
  background: white;
  padding: 1rem;
  flex: 1 1 30%;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.about, .contact {
  margin-top: 3rem;
  text-align: center;
}