:root { color-scheme: light dark; font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.65; }
* { box-sizing: border-box; }
body { margin: 0; background: #f7f8fa; color: #20252c; }
main { max-width: 760px; margin: 48px auto; padding: 32px; background: #fff; border: 1px solid #dce1e7; border-radius: 8px; }
h1 { line-height: 1.25; font-size: clamp(1.65rem, 5vw, 2.25rem); }
h2 { font-size: 1.15rem; margin-top: 1.8rem; }
a { color: #1857a4; text-underline-offset: 3px; overflow-wrap: anywhere; }
p, li { overflow-wrap: anywhere; }
li { margin-bottom: 1rem; }
ol { padding-left: 1.5rem; }
nav { margin-bottom: 1.5rem; }
footer { border-top: 1px solid #dce1e7; margin-top: 2rem; padding-top: 1rem; }
@media (max-width: 600px) { main { margin: 16px; padding: 22px; } }
@media (prefers-color-scheme: dark) { body { background: #15181c; color: #e7ebef; } main { background: #20252c; border-color: #46505b; } a { color: #9ac7ff; } footer { border-color: #46505b; } }