body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: #222;
}

.hero {
  background: #0f172a;
  color: white;
  padding: 100px 20px;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
}

.hero p {
  font-size: 1.3rem;
}

.btn {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 30px;
  background: #22c55e;
  color: #000;
  text-decoration: none;
  font-weight: bold;
  border-radius: 6px;
}

section {
  padding: 60px 20px;
  max-width: 900px;
  margin: auto;
}

footer {
  background: #f1f5f9;
  padding: 20px;
  text-align: center;
}