:root{--bg:#f5f5f7;--ink:#1d1d1f;--muted:#6e6e73;--line:#d9d9de;--accent:#4b6f2f;color-scheme:light dark}
@media (prefers-color-scheme:dark){:root{--bg:#0b0b0c;--ink:#f5f5f7;--muted:#a1a1a6;--line:#2c2c2e;--accent:#8fb86a}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 -apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,Arial,sans-serif;-webkit-font-smoothing:antialiased}
main{max-width:680px;margin:0 auto;padding:32px 20px 80px}
.back{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:600;padding:8px 0;min-height:44px}
.back img{width:32px;height:32px;border-radius:8px}
h1{font-size:40px;letter-spacing:-.025em;line-height:1.1;margin:40px 0 24px}
h2{font-size:21px;letter-spacing:-.01em;margin:36px 0 8px}
p,li{color:var(--muted)}
strong{color:var(--ink)}
a{color:var(--accent)}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:6px}