body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0f172a;
  color: white;
}

header {
  text-align: center;
  padding: 50px 20px;
}

.logo {
  width: 120px;
}

.container {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  padding: 20px;
}

.card {
  background: #1e293b;
  padding: 25px;
  border-radius: 14px;
  width: 250px;
  box-shadow: 0 4px 12px #0005;
}

.card h2 {
  margin-top: 0;
}

.card a {
  display: inline-block;
  margin-top: 10px;
  background: #3b82f6;
  color: white;
  text-decoration: none;
  padding: 10px 14px;
  border-radius: 8px;
}