:root{--bg:#F7F7F4;--surface:#FFFFFF;--ink:#16171A;--text2:#5E6066;--text3:#7A7C80;--line:rgba(40,36,28,.11);--accent:#FF4F1F}
@media (prefers-color-scheme:dark){:root{--bg:#0B0B0D;--surface:#16171A;--ink:#F7F7F4;--text2:#CFCEC7;--text3:#A9A8A2;--line:rgba(255,255,255,.12)}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
.wrap{max-width:760px;margin:0 auto;padding:32px 16px 64px}
header{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:24px}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:20px;letter-spacing:-.04em}
.brand i{width:10px;height:10px;background:var(--accent);border-radius:2px;display:inline-block}
nav{display:flex;gap:4px;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:3px}
nav a{padding:4px 10px;border-radius:7px;color:var(--text2);text-decoration:none;font-size:14px;font-weight:600}
nav a:target,nav a.on{background:var(--ink);color:var(--bg)}
h1{font-size:30px;line-height:1.15;letter-spacing:-.03em;margin:0 0 6px}
h2{font-size:19px;letter-spacing:-.015em;margin:28px 0 8px}
p,li{color:var(--text2)}ul{padding-left:20px}
.meta{color:var(--text3);font-size:14px;margin-bottom:8px}
section.lang{display:none}section.lang.on{display:block}
a{color:var(--accent)}
footer{margin-top:40px;padding-top:16px;border-top:1px solid var(--line);color:var(--text3);font-size:14px}