body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f0f8f0;
  color: #003300;
  padding: 20px;
}
nav {
  background: #388e3c;
  padding: 15px;
  text-align: center;
}
nav a {
  margin: 0 15px;
  color: white;
  text-decoration: none;
  font-weight: bold;
}
nav a:hover {
  text-decoration: underline;
}
footer {
  background: #2e7d32;
  color: white;
  text-align: center;
  padding: 10px;
}
.hero {
  padding: 60px 20px;
  text-align: center;
}
.whatsapp-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #25D366;
  color: white;
  padding: 12px 18px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: bold;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}