:root {
  --primary-color: #2563eb;
  --text-color: #1f2937;
  --bg-color: #f9fafb;
  --container-bg: #ffffff;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-color);
  margin: 0;
  padding: 20px;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  background: var(--container-bg);
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

h1 {
  color: var(--primary-color);
  margin-bottom: 30px;
  border-bottom: 2px solid #e5e7eb;
  padding-bottom: 10px;
}

h2 {
  margin-top: 30px;
  color: #111827;
}

ul {
  padding-left: 20px;
}

li {
  margin-bottom: 8px;
}

.footer {
  margin-top: 50px;
  padding-top: 20px;
  border-top: 1px solid #e5e7eb;
  font-size: 0.9em;
  color: #6b7280;
  text-align: center;
}

@media (max-width: 600px) {
  .container {
    padding: 20px;
  }
}