* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; max-width: 720px; margin: 0 auto; padding: 20px; color: #333; line-height: 1.7; }
a { color: #0366d6; text-decoration: none; }
a:hover { text-decoration: underline; }
header { border-bottom: 1px solid #eee; padding-bottom: 10px; margin-bottom: 20px; }
header nav a { margin-right: 15px; color: #333; }
h1 { font-size: 1.8em; margin-bottom: 15px; }
h2 { font-size: 1.3em; margin: 20px 0 10px; }
time { color: #888; font-size: 0.9em; }
article { margin-top: 20px; }
article p { margin: 10px 0; }
article code { background: #f6f8fa; padding: 2px 6px; border-radius: 3px; font-size: 0.9em; }
article pre { background: #f6f8fa; padding: 16px; border-radius: 6px; overflow-x: auto; }
ul { list-style: none; }
li { margin: 8px 0; }
footer { margin-top: 40px; border-top: 1px solid #eee; padding-top: 10px; color: #888; font-size: 0.9em; text-align: center; }