:root{
  --bg:#0b1020;--card:#141d38;--line:#243154;--text:#e8ecf6;--muted:#9aa6c4;
  --accent:#22d3ee;--accent2:#6366f1;--max:820px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}
header{position:sticky;top:0;z-index:50;background:rgba(11,16,32,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
nav{display:flex;align-items:center;justify-content:space-between;height:66px;max-width:1100px;margin:0 auto;padding:0 22px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:-.02em;color:var(--text)}
.logo .dot{width:24px;height:24px}
.nav-links a{color:var(--muted);font-size:15px;margin-left:26px}
.nav-links a:hover{color:var(--text);text-decoration:none}
main{padding:60px 0 80px}
.doc{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:46px}
.doc h1{font-size:32px;font-weight:800;letter-spacing:-.02em;margin-bottom:6px}
.doc .meta{color:var(--muted);font-size:14px;margin-bottom:8px}
.doc .lead{color:var(--muted);font-size:16px;margin:18px 0 30px;padding-bottom:24px;border-bottom:1px solid var(--line)}
.doc h2{font-size:19px;font-weight:700;margin:30px 0 10px;color:var(--text)}
.doc p{color:#c9d2e8;margin-bottom:12px;font-size:15px}
.doc ul{margin:0 0 14px 22px;color:#c9d2e8;font-size:15px}
.doc li{margin-bottom:8px}
.doc strong{color:var(--text)}
.back{display:inline-block;margin-bottom:24px;color:var(--muted);font-size:14px}
footer{border-top:1px solid var(--line);padding:34px 0;color:var(--muted);font-size:14px}
.foot{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;max-width:1100px;margin:0 auto;padding:0 22px}
.foot a{color:var(--muted)}.foot a:hover{color:var(--text);text-decoration:none}
@media(max-width:560px){.doc{padding:28px 20px}.nav-links a{margin-left:16px}}