body { font-family: system-ui, sans-serif; margin: 2rem; line-height: 1.5; }
header { border-bottom: 1px solid #ddd; margin-bottom: 1.5rem; padding-bottom: 1rem; }
h1 { margin: 0 0 .25rem 0; }
h2 { margin-top: 1.5rem; }
a { text-decoration: none; }
a:hover { text-decoration: underline; }