body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f4f6f8;
}

header {
  background: #2e7d32;
  color: white;
  padding: 15px 30px;
  display: flex;
  justify-content: space-between;
}

nav a {
  color: white;
  margin-left: 15px;
  text-decoration: none;
}

.hero {
  text-align: center;
  padding: 60px 20px;
}

.hero button {
  padding: 10px 20px;
  background: #4caf50;
  border: none;
  color: white;
  cursor: pointer;
}

.features {
  display: flex;
  gap: 20px;
  padding: 30px;
  justify-content: center;
}

.card {
  background: white;
  padding: 20px;
  border-radius: 10px;
  width: 200px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

footer {
  text-align: center;
  padding: 15px;
  background: #222;
  color: #aaa;
}