* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: #0f172a;
  color: #f8fafc;
  font-family: system-ui, sans-serif;
  min-height: 100vh;
}

header {
  padding: 5rem 2rem;
  text-align: center;
}

header h1 {
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

header p {
  color: #94a3b8;
}

main {
  max-width: 1200px;
  margin: auto;
  padding: 2rem;

  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.card {
  background: #1e293b;
  border-radius: 16px;
  padding: 2rem;
  transition: 0.2s;
  border: 1px solid #334155;
}

.card:hover {
  transform: translateY(-4px);
  border-color: #3b82f6;
}

.card h2 {
  margin-bottom: 1rem;
}

.card p {
  color: #94a3b8;
  margin-bottom: 2rem;
  line-height: 1.6;
}

.card a {
  display: inline-block;
  text-decoration: none;
  color: white;
  background: #2563eb;
  padding: 0.75rem 1.2rem;
  border-radius: 8px;
}

footer {
  text-align: center;
  padding: 4rem 0;
  color: #64748b;
}