*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: linear-gradient(180deg,#071028 0%, #081226 40%, #081024 100%);
  color: #e6eef8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  padding:28px;
}

.wrap{max-width:var(--maxw);margin:0 auto}
header{
  padding:36px;
  border-radius:20px;
  background: linear-gradient(90deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  box-shadow:var(--shadow);
  display:flex;
  gap:18px;
  align-items:center;
  margin-bottom:20px;
  border:1px solid rgba(255,255,255,0.03);
}

.logo{
  width:96px;height:96px;border-radius:18px;display:flex;align-items:center;justify-content:center;
  background:var(--bg2);font-weight:900;color:white;font-size:20px;box-shadow:0 8px 30px rgba(0,0,0,0.45)
}

h1{margin:0;font-size:clamp(22px,3.6vw,34px);background:linear-gradient(90deg,var(--accent2),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
p.lead{margin:6px 0 0;color:var(--muted);max-width:72%}

main{margin-top:18px}
.card{
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius:var(--radius);
  padding:24px;
  margin-bottom:18px;
  border:1px solid rgba(255,255,255,0.03);
  box-shadow: 0 12px 30px rgba(2,6,23,0.5);
}

h2{color:var(--accent);margin-top:0}
h3{color:var(--accent2);margin-bottom:6px}
h4{color:var(--muted);margin-bottom:6px}
p{margin:0 0 12px 0;line-height:1.65}
ul,ol{margin:8px 0 14px 22px}
.muted{color:var(--muted)}
.note{background:var(--glass);padding:12px;border-radius:10px;border-left:4px solid rgba(6,182,212,0.18);margin:12px 0}
.warn{background:rgba(245,158,11,0.04);padding:12px;border-radius:10px;border-left:4px solid rgba(245,158,11,0.18);margin:12px 0}
.danger{background:rgba(239,68,68,0.04);padding:12px;border-radius:10px;border-left:4px solid rgba(239,68,68,0.18);margin:12px 0}
.kbd{font-family:var(--mono);background:#071127;padding:5px 8px;border-radius:6px;border:1px solid rgba(255,255,255,0.04);font-weight:700}
.two-col{display:grid;grid-template-columns:1fr 340px;gap:20px}
.aside{background:linear-gradient(180deg, rgba(124,58,237,0.03), rgba(6,182,212,0.02));padding:14px;border-radius:12px}
.btn{display:inline-block;padding:12px 16px;border-radius:12px;background:linear-gradient(90deg,var(--accent),var(--accent2));color:#021026;text-decoration:none;font-weight:800}
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.feature{background:linear-gradient(180deg, rgba(255,255,255,0.01), rgba(255,255,255,0.00));padding:12px;border-radius:10px;border:1px solid rgba(255,255,255,0.02)}
.footer{opacity:.9;color:var(--muted);font-size:14px;margin-top:12px;text-align:center}
pre{background:#071127;padding:12px;border-radius:8px;overflow:auto;color:var(--muted)}
@media(max-width:980px){.two-col{grid-template-columns:1fr}.logo{width:72px;height:72px}}