body { background-color: #fff; padding: 20px; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif; line-height: 1.6; color: #333; }
.markdown-body { max-width: 900px; margin: 0 auto; }
h1, h2, h3 { border-bottom: 1px solid #eaecef; padding-bottom: 0.3em; }
code { background-color: #f6f8fa; padding: 0.2em 0.4em; border-radius: 3px; font-family: monospace; }
pre { background-color: #f6f8fa; padding: 16px; border-radius: 6px; overflow: auto; }
a { color: #0366d6; text-decoration: none; }
a:hover { text-decoration: underline; }