:root{color-scheme:light dark;--ink:#16191d;--muted:#5d6672;--line:#e3e6ea;--blue:#1469dd;--bg:#fff}
@media(prefers-color-scheme:dark){:root{--ink:#e8edf4;--muted:#a0adc0;--line:#2c3442;--blue:#5aa0ff;--bg:#0f1318}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
main{max-width:720px;margin:0 auto;padding:56px 24px 80px}a{color:var(--blue)}
header{display:flex;align-items:center;gap:12px;margin-bottom:28px}header img{width:44px;height:44px;border-radius:11px}header b{font-size:20px}
h1{font-size:34px;line-height:1.2;margin:0 0 12px}h2{font-size:21px;margin:34px 0 8px}p,li{color:var(--ink)}.muted{color:var(--muted)}
footer{margin-top:56px;padding-top:18px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}footer a{margin-right:16px}