body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  color: white;
}
h1 { text-shadow: 2px 2px 4px rgba(0,0,0,0.3); }
h2 { margin-top: 2rem; border-bottom: 2px solid rgba(255,255,255,0.3); padding-bottom: 0.5rem; }
ol { background: rgba(255,255,255,0.1); padding: 1rem 2rem; border-radius: 8px; }
li { margin: 0.5rem 0; }
pre {
  background: rgba(0,0,0,0.3);
  padding: 1rem;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 0.9rem;
}
strong { color: #ffd700; }