:root{
  --bg:#f7f8fa; --surface:#ffffff; --text:#14181f; --muted:#4a5363; --line:#dfe3ea;
  --accent:#2f4fd0; --focus:#2f4fd0;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,"Helvetica Neue",Arial,sans-serif;
  color-scheme:light dark;
}
@media (prefers-color-scheme:dark){
  :root{ --bg:#0d1420; --surface:#121b2a; --text:#e9edf4; --muted:#a6b0c0; --line:#243145;
         --accent:#8db4ff; --focus:#8db4ff; }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;
  background:var(--bg);color:var(--text);font-family:var(--font);font-size:17px;line-height:1.6;
  -webkit-font-smoothing:antialiased}
a{color:var(--accent);text-underline-offset:3px}
a:focus-visible{outline:2px solid var(--focus);outline-offset:3px;border-radius:4px}
.wrap{width:100%;max-width:720px;margin:0 auto;padding:0 24px}
header.top{padding:28px 0}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--text);text-decoration:none;
  font-weight:650;font-size:19px;letter-spacing:-.01em}
.brand img{width:32px;height:32px;display:block}
.lang{font-size:15px;color:var(--muted)}
main{flex:1}
.hero{min-height:58vh;display:flex;flex-direction:column;justify-content:center;padding:40px 0 64px}
.hero .mark{width:72px;height:72px;margin-bottom:32px}
.hero h1{font-size:clamp(40px,8vw,64px);line-height:1.05;letter-spacing:-.03em;margin:0 0 20px;font-weight:700}
.hero p{font-size:clamp(19px,2.6vw,22px);color:var(--muted);margin:0 0 8px;max-width:30ch}
.hero .contact{margin-top:36px;font-size:17px;color:var(--muted)}
.doc{padding:24px 0 64px}
.doc h1{font-size:clamp(30px,5vw,40px);letter-spacing:-.02em;line-height:1.15;margin:8px 0 8px}
.doc .meta{color:var(--muted);font-size:15px;margin:0 0 32px}
.doc h2{font-size:19px;margin:32px 0 8px;letter-spacing:-.005em}
.doc p,.doc li{color:var(--text)}
.doc ul{padding-left:22px}
footer{border-top:1px solid var(--line);padding:24px 0 32px;font-size:15px;color:var(--muted)}
footer .wrap{display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between}
footer nav{display:flex;gap:20px}
.nw{white-space:nowrap}