body {
  font-family: system-ui, sans-serif;
  max-width: 1000px;
  margin: 2rem auto;
  padding: 1rem;
  background: #0f0f0f;
  color: #f5f5f5;
  line-height: 1.6;
}

a {
  color: #4fc3f7;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

header, footer {
  text-align: center;
  margin: 2rem 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  background: #1a1a1a;
  padding: 1rem;
  border-radius: 12px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.3);
  transition: transform 0.2s ease;
}

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

.card h3 {
  margin-top: 0;
  font-size: 1.2rem;
}