body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: #121212;
  color: #f0f0f0;
  text-align: center;
  padding: 2rem;
}
.container {
  max-width: 600px;
  margin: auto;
}
.logo {
  max-width: 120px;
  margin-bottom: 1rem;
}
h1 {
  font-size: 2.5rem;
}
.tagline {
  font-size: 1.2rem;
  margin: 1rem 0 2rem;
}
.button {
  padding: 0.75rem 1.5rem;
  background: #00ffe0;
  color: #121212;
  text-decoration: none;
  border-radius: 6px;
  font-weight: bold;
  transition: background 0.2s ease;
}
.button:hover {
  background: #00cbbd;
}
footer {
  margin-top: 4rem;
  font-size: 0.9rem;
  color: #777;
}