body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #0f0f0f;
  color: white;
}

header {
  text-align: center;
  padding: 60px 20px;
  background: linear-gradient(135deg, #000, #111);
}

h1 {
  font-size: 42px;
  letter-spacing: 2px;
}

p {
  color: #aaa;
}

.btn {
  display: inline-block;
  margin-top: 20px;
  padding: 14px 28px;
  background: #7c3aed;
  color: white;
  text-decoration: none;
  border-radius: 8px;
  font-weight: bold;
}

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

ul {
  list-style: none;
  padding: 0;
}

li {
  padding: 12px 0;
  border-bottom: 1px solid #222;
}