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

.header {
  text-align: center;
  padding: 40px 20px;
}

.header h1 {
  margin: 0;
  font-size: 2.5rem;
}

.header p {
  opacity: 0.7;
}

.container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  padding: 20px;
  max-width: 900px;
  margin: auto;
}

.card {
  display: block;
  background: #1e293b;
  padding: 25px;
  border-radius: 15px;
  text-decoration: none;
  color: white;
  transition: 0.3s;
  box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.card:hover {
  transform: translateY(-5px);
  background: #334155;
}

.card h2 {
  margin: 0 0 10px 0;
}

.card p {
  opacity: 0.7;
  margin: 0;
}

.footer {
  text-align: center;
  padding: 20px;
  opacity: 0.5;
}