body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f9fafb;
  color: #111827;
}

h1, h2, h3 {
  color: #1f2937;
}

a {
  color: #2563eb;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

.page-header {
  background: linear-gradient(90deg, #2563eb, #1e40af);
  color: white;
  padding: 2rem;
  border-radius: 8px;
  margin-bottom: 2rem;
}

blockquote {
  background-color: #eff6ff;
  border-left: 4px solid #3b82f6;
  padding: 1rem;
  border-radius: 6px;
  margin: 1rem 0;
}