:root{
  --bg:#0f1724;
  --card:#0b1220;
  --muted:#9aa4b2;
  --accent:#6ee7b7;
  --glass: rgba(255,255,255,0.03);
  --radius:16px;
  --maxw:1100px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:linear-gradient(180deg,#071022 0%, #0b1724 100%);
  color:#e6eef6;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.45;
}
.container{
  max-width:var(--maxw);
  margin:0 auto;
  padding:28px;
}
.nav{
  position:sticky;
  top:0;
  backdrop-filter: blur(6px);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent);
  border-bottom:1px solid rgba(255,255,255,0.03);
}
.nav .container{display:flex;align-items:center;justify-content:space-between;}
.brand{font-weight:700;letter-spacing:0.2px}
.brand .dot{color:var(--accent);margin-left:6px}
nav a{margin-left:10px;text-decoration:none}
.btn{
  display:inline-block;
  padding:10px 14px;
  border-radius:12px;
  font-weight:600;
  text-decoration:none;
  border:1px solid transparent;
  transition:transform .12s ease, box-shadow .12s ease;
}
.btn:hover{transform:translateY(-3px)}
.btn.ghost{background:transparent;color:var(--muted);border-color:rgba(255,255,255,0.03)}
.btn.primary{background:linear-gradient(90deg,#10b981,#06b6d4);color:#042327}
.lead{color:var(--muted);margin-top:8px}

.hero{
  display:grid;
  grid-template-columns:1fr 320px;
  gap:28px;
  align-items:center;
  padding:48px 0;
}
.card{
  background:var(--card);
  padding:20px;
  border-radius:var(--radius);
  box-shadow: 0 6px 30px rgba(2,6,23,0.6);
  border:1px solid rgba(255,255,255,0.03);
}
.features{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
  margin-top:24px;
}
.features article{
  background:var(--glass);
  padding:20px;border-radius:12px;border:1px solid rgba(255,255,255,0.02)
}
.signup{margin-top:28px;padding:28px;background:linear-gradient(180deg,rgba(255,255,255,0.02),transparent);border-radius:12px}
.signup form{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.signup input[type="email"]{
  flex:1;min-width:200px;padding:12px;border-radius:10px;border:1px solid rgba(255,255,255,0.04);
  background:transparent;color:inherit;
}
.footer{margin-top:36px;padding:18px 0;border-top:1px solid rgba(255,255,255,0.03);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap}
.muted{color:var(--muted);font-size:13px}

/* responsive */
@media (max-width:880px){
  .hero{grid-template-columns:1fr; padding:28px 0}
  .features{grid-template-columns:1fr; margin-top:18px}
  .nav .container{padding:0}
}