body {
  font-family: Arial, sans-serif;
  background: #0c0c0c;
  color: #eee;
  margin: 0;
  text-align: center;
}
header {
  background: #111;
  padding: 2rem 1rem;
}
.logo {
  width: 160px;
  border-radius: 10px;
}
h1 {
  color: #7ef9ff;
  margin-top: 1rem;
}
.btn {
  display: inline-block;
  background: #7ef9ff;
  color: #000;
  padding: 0.75rem 1.5rem;
  border-radius: 10px;
  text-decoration: none;
  font-weight: bold;
}
.features {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  padding: 2rem;
}
.card {
  background: #1a1a1a;
  border: 1px solid #333;
  border-radius: 12px;
  margin: 1rem;
  padding: 1.5rem;
  width: 280px;
  transition: transform 0.2s;
}
.card:hover {
  transform: scale(1.05);
}
footer {
  background: #111;
  padding: 1rem;
  margin-top: 3rem;
  font-size: 0.9rem;
  color: #777;
}