:root{
  --bg:#070b16; --card:#101827; --text:#f5f7fb; --muted:#b7c0d1;
  --line:#22304a; --accent:#4da3ff; --accent2:#7c5cff;
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,Arial,sans-serif;background:radial-gradient(circle at top,#17233d 0,#070b16 45%,#03050b 100%);color:var(--text);line-height:1.6}
header{padding:36px 20px;border-bottom:1px solid var(--line);background:rgba(7,11,22,.8);backdrop-filter:blur(10px);position:sticky;top:0}
nav{max-width:980px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{font-weight:900;font-size:28px;letter-spacing:.08em}
.links a{color:var(--muted);text-decoration:none;margin-left:18px;font-weight:600}
.links a:hover{color:var(--accent)}
main{max-width:980px;margin:0 auto;padding:48px 20px}
.hero{padding:54px 0}
.badge{display:inline-block;padding:8px 12px;border:1px solid var(--line);border-radius:999px;color:var(--accent);background:rgba(77,163,255,.08);font-weight:700}
h1{font-size:48px;line-height:1.05;margin:18px 0}
h2{font-size:30px;margin-top:36px}
h3{margin-top:26px}
p,li{color:var(--muted);font-size:17px}
.card{background:rgba(16,24,39,.78);border:1px solid var(--line);border-radius:18px;padding:26px;margin:18px 0;box-shadow:0 18px 50px rgba(0,0,0,.25)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px}
.button{display:inline-block;margin-top:18px;padding:12px 18px;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:white;text-decoration:none;font-weight:800}
footer{border-top:1px solid var(--line);padding:28px 20px;color:var(--muted);text-align:center}
footer a{color:var(--muted)}
.doc h1{font-size:40px}
.doc strong{color:var(--text)}
.small{font-size:14px;color:#8d98ad}
@media(max-width:650px){h1{font-size:36px}.links{display:flex;flex-wrap:wrap}.links a{margin-left:10px}}