body {
  font-family: -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  margin: 0;
  padding: 0;
  background: #f9f9fb;
  color: #333;
  line-height: 1.6;
}
header {
  background: linear-gradient(to right, #4f46e5, #6d28d9);
  color: white;
  padding: 2rem;
  text-align: center;
}
header h1 {
  margin: 0 0 0.5rem;
}
.btn-primary {
  display: inline-block;
  margin-top: 1rem;
  background: #fff;
  color: #4f46e5;
  padding: 0.7rem 1.5rem;
  border-radius: 6px;
  font-weight: bold;
  text-decoration: none;
}
.btn-primary:hover {
  background: #e0e0ff;
}
section {
  padding: 2rem;
  max-width: 720px;
  margin: 0 auto;
}
ul {
  list-style: none;
  padding-left: 0;
}
ul li {
  padding: 0.5rem 0;
  font-size: 1.1rem;
}
footer {
  text-align: center;
  padding: 2rem;
  font-size: 0.9rem;
  color: #888;
}
a {
  color: #4f46e5;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}