body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  text-align: center;
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  max-width: 800px;
  padding: 40px;
}

h1 {
  font-size: 3.5rem;
  margin-bottom: 20px;
}

.btn {
  display: inline-block;
  margin-top: 30px;
  padding: 12px 30px;
  background: white;
  color: #667eea;
  text-decoration: none;
  border-radius: 50px;
  font-weight: bold;
  transition: 0.3s;
}

.btn:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}