body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f4f6f9;
  color: #333;
}

header {
  background: #1f2937;
  color: white;
  padding: 20px;
  text-align: center;
}

nav a {
  color: #ddd;
  margin: 0 10px;
  text-decoration: none;
}

nav a:hover {
  color: white;
}

section {
  max-width: 900px;
  margin: 40px auto;
  padding: 0 20px;
}

.hero {
  text-align: center;
}

form {
  margin-top: 20px;
}

input[type="email"] {
  padding: 10px;
  width: 250px;
  border: 1px solid #ccc;
  border-radius: 5px;
}

button {
  padding: 10px 15px;
  border: none;
  background: #2563eb;
  color: white;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background: #1e40af;
}

footer {
  background: #111827;
  color: white;
  text-align: center;
  padding: 15px;
  margin-top: 40px;
}

.small {
  font-size: 0.85em;
  color: #555;
}