:root{
  --bg:#0B0F19; --bg2:#151C2C; --card:#1E2640; --accent:#4F46E5; --teal:#06B6D4;
  --green:#10B981; --text:#fff; --muted:#94A3B8;
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  background:radial-gradient(1000px 500px at 50% -10%,var(--bg2),var(--bg)) fixed;
  color:var(--text);min-height:100vh;line-height:1.6
}
a{color:var(--teal);text-decoration:none}
.wrap{max-width:820px;margin:0 auto;padding:32px 22px}
.nav{display:flex;justify-content:space-between;align-items:center;margin-bottom:40px;flex-wrap:wrap;gap:12px}
.brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:20px}
.brand .logo{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--teal));display:grid;place-items:center;font-size:20px}
.nav a{color:var(--muted);font-weight:600;font-size:14px;margin-left:16px}
.hero{text-align:center;padding:40px 0}
.hero .logo-big{width:96px;height:96px;border-radius:28px;margin:0 auto 22px;background:linear-gradient(135deg,var(--accent),var(--teal));display:grid;place-items:center;font-size:46px}
.hero h1{font-size:38px;font-weight:900}
.hero p{color:var(--muted);font-size:17px;margin:10px 0 28px}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:16px 28px;border-radius:16px;font-weight:800;font-size:17px;box-shadow:0 16px 30px rgba(79,70,229,.4)}
.btn:hover{filter:brightness(1.1)}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:44px}
.feature{background:var(--card);border-radius:20px;padding:22px}
.feature h3{font-size:16px;margin-bottom:6px}
.feature p{color:var(--muted);font-size:14px}
.doc h1{font-size:30px;font-weight:900;margin-bottom:6px}
.doc .updated{color:var(--muted);font-size:13px;margin-bottom:26px}
.doc h2{font-size:19px;margin:28px 0 8px;color:var(--teal)}
.doc p,.doc li{color:#E2E8F0;font-size:15px;margin-bottom:10px}
.doc ul{padding-left:22px}
.note{background:var(--card);border-left:3px solid var(--teal);border-radius:12px;padding:14px 16px;margin:22px 0;color:var(--muted);font-size:13px}
footer{border-top:1px solid rgba(255,255,255,.08);margin-top:50px;padding-top:22px;color:var(--muted);font-size:13px;text-align:center}
footer a{margin:0 8px}