:root{
  --bg:#0b0e16; --ink:#eaecf4; --muted:#9aa3b8; --faint:#858fa6;
  --accent:#6c7cff; --accent2:#9aa6ff; --line:rgba(255,255,255,.09);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:
    radial-gradient(1000px 600px at 85% -10%, rgba(108,124,255,.14), transparent 60%),
    var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased; line-height:1.6;
}
a{color:var(--accent2);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:760px;margin:0 auto;padding:0 22px}

/* Nav */
header.nav{position:sticky;top:0;z-index:50;backdrop-filter:saturate(140%) blur(12px);
  background:rgba(11,14,22,.7);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:64px;
  max-width:1080px;margin:0 auto;padding:0 22px}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;color:var(--ink)}
.brand img{width:30px;height:30px;border-radius:8px}
.nav-cta{font-size:14px;font-weight:600;padding:9px 16px;border-radius:999px;
  background:var(--accent);color:#0b0c10;white-space:nowrap}
.nav-cta:hover{background:var(--accent2);text-decoration:none}

/* Article */
main{padding:54px 0 30px}
h1{font-size:clamp(30px,5vw,42px);font-weight:800;letter-spacing:-.02em;margin:0 0 6px}
.updated{color:var(--faint);font-size:14px;margin:0 0 8px}
.lang-rule{border:none;border-top:1px solid var(--line);margin:48px 0}
h2{font-size:20px;font-weight:700;margin:34px 0 8px;letter-spacing:-.01em}
p{color:var(--muted);margin:0 0 14px}
.lead{color:var(--ink);font-size:18px;margin:18px 0 8px}
.contact-box{background:rgba(108,124,255,.10);border:1px solid rgba(108,124,255,.28);
  border-radius:14px;padding:18px 20px;margin-top:18px}
.contact-box p{margin:0;color:var(--ink)}

/* Footer */
footer{border-top:1px solid var(--line);padding:34px 0;color:var(--faint);font-size:14px;margin-top:40px}
.foot-in{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center;
  max-width:1080px;margin:0 auto;padding:0 22px}
.foot-links{display:flex;gap:22px;flex-wrap:wrap}
.foot-links a{color:var(--faint)}
.foot-links a:hover{color:var(--ink);text-decoration:none}