:root{color-scheme:light dark;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:#f7f9f8;color:#172c2c}*{box-sizing:border-box}body{margin:0}main{max-width:850px;margin:48px auto;padding:40px;background:#fff;border:1px solid #dae5df;border-radius:24px}h1{font-size:clamp(1.7rem,4vw,2.4rem);line-height:1.2;margin-top:0}h2{font-size:1.3rem;line-height:1.4;margin-top:2rem}p{font-size:1rem;line-height:1.75;overflow-wrap:anywhere}a{color:#19644a;text-underline-offset:.2em}a:focus-visible{outline:3px solid #6fad93;outline-offset:4px}section{border-top:1px solid #dae5df;margin-top:2.5rem;padding-top:.5rem}@media(max-width:640px){main{margin:16px;padding:24px;border-radius:18px}}@media(prefers-color-scheme:dark){:root{background:#111c1b;color:#eef5f2}main{background:#1b2b28;border-color:#3f5650}a{color:#a9e6c8}section{border-color:#3f5650}}