* { margin: 0; padding: 0; box-sizing: border-box; }
body { 
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #0d1117; color: #c9d1d9; line-height: 1.6;
}
.container { max-width: 900px; margin: 0 auto; padding: 2rem; }
header { border-bottom: 1px solid #30363d; padding-bottom: 1rem; margin-bottom: 2rem; }
.home-link { color: #58a6ff; text-decoration: none; font-size: 1.2rem; font-weight: 600; }
.home-link:hover { text-decoration: underline; }
h1 { color: #f0f6fc; font-size: 2rem; margin: 1.5rem 0 1rem; }
h2 { color: #f0f6fc; font-size: 1.5rem; margin: 1.5rem 0 0.75rem; padding-bottom: 0.3rem; border-bottom: 1px solid #21262d; }
h3 { color: #f0f6fc; font-size: 1.2rem; margin: 1.2rem 0 0.5rem; }
p { margin: 0.5rem 0; }
a { color: #58a6ff; text-decoration: none; }
a:hover { text-decoration: underline; }
ul { margin: 0.5rem 0 0.5rem 1.5rem; }
li { margin: 0.3rem 0; }
code { background: #161b22; padding: 0.2em 0.4em; border-radius: 3px; font-size: 0.9em; color: #f8f8f8; }
blockquote { border-left: 3px solid #30363d; padding-left: 1rem; color: #8b949e; margin: 1rem 0; }
footer { border-top: 1px solid #30363d; padding-top: 1rem; margin-top: 2rem; font-size: 0.9rem; }
.toc { background: #161b22; border: 1px solid #30363d; border-radius: 6px; padding: 1rem; margin: 1rem 0; }
.toc h3 { margin-top: 0; font-size: 1rem; color: #8b949e; }
.toc ul { margin: 0.5rem 0 0 1rem; }
.toc li { font-size: 0.9rem; }
strong { color: #f0f6fc; }