:root { color-scheme: light; font-family: system-ui, sans-serif; color: #30513b; background: #efefef; }
body { margin: 0; line-height: 1.7; }
main { max-width: 760px; margin: 40px auto; padding: 24px; }
h1 { line-height: 1.2; }
h2 { margin-top: 32px; }
a { color: inherit; text-decoration: underline; }
:focus-visible { outline: 3px solid #30513b; outline-offset: 5px; }