body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; line-height:1.6; margin:0; }
.container { max-width: 720px; margin: 3rem auto; padding: 0 1rem; }
h1,h2,h3 { line-height:1.25; }
a { text-decoration: none; border-bottom: 1px solid; }
code, pre { font-family: ui-monospace, Menlo, Consolas, monospace; }
pre { overflow:auto; padding:.75rem; border:1px solid #ddd; border-radius:6px; }