* { box-sizing: border-box; margin: 0; }
body { font-family: system-ui, "Hiragino Sans", "Noto Sans JP", Meiryo, sans-serif;
  background: #f7f8fa; color: #1f2328; line-height: 1.8; }
main { max-width: 760px; margin: 0 auto; padding: 24px 20px 48px; }
h1 { font-size: 22px; margin: 16px 0; }
h2 { font-size: 16px; margin: 24px 0 8px; border-left: 4px solid #0969da; padding-left: 8px; }
p, li { font-size: 14px; }
ul { padding-left: 20px; }
table { border-collapse: collapse; margin: 8px 0; width: 100%; }
td, th { border: 1px solid #d0d7de; padding: 8px 10px; font-size: 14px; text-align: left; vertical-align: top; }
th { background: #eef1f4; width: 30%; }
a { color: #0969da; }
nav { font-size: 13px; margin-bottom: 8px; }
footer { color: #8b949e; font-size: 12px; text-align: center; padding: 16px; }
.updated { color: #57606a; font-size: 12px; }