body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial;
  background: #0f172a;
  color: #e2e8f0;
}

.container {
  max-width: 900px;
  margin: auto;
  padding: 40px 20px;
  text-align: center;
}

h1 {
  margin-bottom: 10px;
}

.subtitle {
  color: #94a3b8;
  margin-bottom: 40px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.card {
  background: #1e293b;
  padding: 30px 20px;
  border-radius: 16px;
  text-decoration: none;
  color: inherit;
  transition: transform .15s ease, box-shadow .15s ease;
  border: 1px solid #334155;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(0,0,0,.25);
}

.icon {
  font-size: 40px;
  margin-bottom: 10px;
}

.btn {
  display: inline-block;
  margin-top: 30px;
  padding: 10px 18px;
  background: #2563eb;
  color: white;
  border-radius: 10px;
  text-decoration: none;
}