body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0f0f0f;
  color: #fff;
  text-align: center;
}
header {
  padding: 60px 20px;
  background: linear-gradient(135deg, #7d00ff, #00d4ff);
}
h1 {
  font-size: 3rem;
  margin: 0;
}
p {
  font-size: 1.2rem;
}
.btn {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 24px;
  background: #00d4ff;
  color: #000;
  font-weight: bold;
  border-radius: 6px;
  text-decoration: none;
}
footer {
  margin-top: 40px;
  padding: 20px;
  background: #111;
  font-size: 0.9rem;
}