:root{
  --bg:#0b0d12;--panel:#12151c;--text:#dbe0ea;--muted:#9aa3b2;--brand:#5be3b3;--brand-2:#4ad3f9;--border:#1f2430;--code:#0f1320
}
*{box-sizing:border-box}html,body{margin:0;padding:0}
body{font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Inter,Arial,sans-serif;background:radial-gradient(1200px 600px at 10% -10%,rgba(75,208,249,.08),transparent),radial-gradient(1000px 500px at 100% 0,rgba(91,227,179,.08),transparent),var(--bg);color:var(--text)}
code,pre{font-family:ui-monospace,SFMono-Regular,Consolas,Menlo,monospace}

.nav{position:sticky;top:0;display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:linear-gradient(180deg,rgba(11,13,18,.9),rgba(11,13,18,.6));backdrop-filter:blur(6px);border-bottom:1px solid var(--border);z-index:10}
.brand{color:#fff;text-decoration:none;font-weight:700;letter-spacing:.5px}
.nav-links a{color:var(--text);opacity:.9;text-decoration:none;margin-left:14px}
.nav .btn{margin-left:10px}

.wrap{max-width:980px;margin:0 auto;padding:24px 16px}
.hero{padding:56px 0 36px}
.hero h1{font-size:40px;line-height:1.15;margin:0 0 8px}
.tagline{color:#cfe7ff;opacity:.95;margin:0 0 16px}
.cta{display:flex;gap:12px;margin:10px 0 8px}
.note{color:var(--muted);margin:8px 0 0}

.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border);background:linear-gradient(180deg,#141825,#0f1320);color:var(--text);padding:8px 14px;border-radius:9px;text-decoration:none;transition:transform .05s ease,box-shadow .05s ease}
.btn:hover{transform:translateY(-1px);box-shadow:0 2px 0 0 #000 inset,0 0 0 1px rgba(255,255,255,.03) inset}
.btn-primary{border:0;background:linear-gradient(180deg,var(--brand),var(--brand-2));color:#05131a;font-weight:700}
.btn-lg{padding:12px 18px;border-radius:10px}
.btn[aria-disabled="true"], .btn.disabled{opacity:.55;pointer-events:none}

.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.features{margin:10px 0 26px}
.features article{background:linear-gradient(180deg,#121722,#101521);border:1px solid var(--border);border-radius:12px;padding:14px}
.features h3{margin:0 0 6px;font-size:18px}
.features p{margin:0;color:var(--muted)}

.how{margin:32px 0 18px}
.how h2,.quickstart h2,.download h2,.safety h2{margin:0 0 12px}
.steps{counter-reset:step;list-style:none;padding:0;margin:0 0 10px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.steps li{border:1px solid var(--border);border-radius:12px;padding:12px;background:linear-gradient(180deg,#121722,#101521)}
.steps li strong{display:block;margin-bottom:6px}

.code{background:var(--code);border:1px solid var(--border);border-radius:10px;padding:10px;overflow:auto;color:#c8e8ff}
.code::-webkit-scrollbar{height:8px}
.code::-webkit-scrollbar-thumb{background:#2a3242;border-radius:10px}

.quickstart{margin:20px 0}
.qs-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.qs-grid h4{margin:0 0 6px}
.muted{color:var(--muted)}
.small{font-size:.9em}

.download{margin:28px 0}
.dl-cta{display:flex;gap:12px;margin:8px 0 0}

.safety{margin:18px 0 28px}
.safety ul{margin:8px 0 0 18px}
.badge{display:inline-block;background:#2a3242;color:#e7f3ff;padding:2px 8px;border-radius:999px;font-size:.85em;margin-left:6px}

.foot{border-top:1px solid var(--border);padding:18px 16px;text-align:center;color:var(--muted)}

@media (max-width:860px){
  .grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .qs-grid{grid-template-columns:1fr}
  .hero{padding:40px 0 24px}
  .hero h1{font-size:32px}
}