body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(to bottom, #000000, #161616, #252525);
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  text-align: center;
  max-width: 500px;
  padding: 2rem;
}

h1 {
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

footer {
  margin-top: 2rem;
  font-size: 0.8rem;
  color: #aaa;
}