:root{--bg:#ECF0EA;--surface:#FAFBF8;--ink:#17212A;--muted:#55616B;--line:#D4DCD3;--accent:#1E5B49}
@media (prefers-color-scheme:dark){:root{--bg:#0F1419;--surface:#171F27;--ink:#E5EBEE;--muted:#9AA6B1;--line:#26303A;--accent:#72C6A8}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;padding:0 16px 48px}
main{max-width:680px;margin:0 auto;padding-top:40px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:inherit;margin-bottom:28px}
.brand img{width:48px;height:48px;border-radius:11px}
.brand b{font-size:18px}
h1{font-size:clamp(28px,6vw,40px);line-height:1.1;margin:0 0 12px;letter-spacing:-.01em}
h2{font-size:20px;margin:32px 0 8px}
p,li{color:var(--ink)}.muted{color:var(--muted)}
a{color:var(--accent)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin:20px 0}
footer{margin-top:40px;color:var(--muted);font-size:14px}