:root{--bg:#f7f8f6;--card:#fff;--ink:#16211b;--muted:#5b6660;--accent:#1f6b45;--line:#e2e6e3}
@media (prefers-color-scheme:dark){:root{--bg:#111613;--card:#18201b;--ink:#e8eee9;--muted:#9aa7a0;--accent:#5fbf8a;--line:#2a332d}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
main{max-width:760px;margin:0 auto;padding:48px 20px}
h1{font-size:2rem;margin:0 0 4px}h2{font-size:1.2rem;margin:32px 0 8px}
.sub{color:var(--muted);margin:0 0 32px}.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px 22px;margin:16px 0}
a{color:var(--accent)}footer{color:var(--muted);font-size:.9rem;border-top:1px solid var(--line);margin-top:48px;padding-top:16px}
ul{padding-left:20px}