:root{
  --bg:#0b1220;
  --panel:#0f1a33;
  --text:#e9eefc;
  --muted:#b8c3e6;
  --accent:#4aa9ff;
  --card:#0e1730;
  --border:rgba(255,255,255,.08);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial;
  background: radial-gradient(1200px 700px at 20% 10%, rgba(74,169,255,.22), transparent 60%),
              radial-gradient(900px 600px at 80% 20%, rgba(123,63,228,.22), transparent 55%),
              var(--bg);
  color:var(--text);
}

a{color:inherit; text-decoration:none}
.container{width:min(1100px,92%); margin:0 auto}

.header{
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(10px);
  background: rgba(11,18,32,.65);
  border-bottom:1px solid var(--border);
}
.header__inner{display:flex; align-items:center; justify-content:space-between; padding:14px 0}
.brand{display:flex; align-items:center; gap:10px}
.brand__logo{
  width: 60px;
  height: 60px;
  object-fit: contain;
  border-radius: 50%;
  background: white;
  padding: 6px;
}
.brand__name{font-weight:800; letter-spacing:.5px}

.nav{display:flex; gap:18px; align-items:center}
.nav a{opacity:.9}
.nav a:hover{opacity:1; color:var(--accent)}

.burger{display:none; background:transparent; border:0; cursor:pointer}
.burger span{display:block; width:26px; height:2px; background:var(--text); margin:6px 0; opacity:.9}

.hero{padding:64px 0 30px}
.hero__grid{display:grid; gap:22px; grid-template-columns: 1.25fr .75fr; align-items:start}
.hero h1{font-size:46px; margin:0 0 10px; line-height:1.05}
.accent{color:var(--accent)}
.lead{font-size:20px; margin:0 0 10px}
.muted{color:var(--muted); line-height:1.6}
.small{font-size:13px}

.hero__card{
  background: linear-gradient(180deg, rgba(74,169,255,.12), rgba(255,255,255,.03));
  border:1px solid var(--border);
  border-radius:18px;
  padding:18px;
}
.hero__card ul{margin:10px 0 0; padding-left:18px}

.section{padding:46px 0}
.section h2{margin:0 0 14px; font-size:30px}

.grid{display:grid; gap:14px}
.cards{grid-template-columns: repeat(3, 1fr)}
.card{
  background: rgba(14,23,48,.7);
  border:1px solid var(--border);
  border-radius:18px;
  padding:18px;
}
.card h3{margin:0 0 8px}

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:11px 14px; border-radius:14px;
  border:1px solid var(--border);
  font-weight:700;
}
.btn.primary{background:var(--accent); color:#051022; border-color:transparent}
.btn.ghost{background:transparent}
.hero__actions{display:flex; gap:10px; margin-top:16px; flex-wrap:wrap}

.contact{display:grid; gap:14px; grid-template-columns: .9fr 1.1fr}
.contact__box, .contact__form{
  background: rgba(14,23,48,.7);
  border:1px solid var(--border);
  border-radius:18px;
  padding:18px;
}
label{display:block; margin:10px 0}
input, textarea{
  width:100%; margin-top:6px;
  padding:11px 12px;
  border-radius:12px;
  border:1px solid var(--border);
  background: rgba(5,10,20,.55);
  color:var(--text);
}
input:focus, textarea:focus{outline:2px solid rgba(74,169,255,.35)}

.footer{
  border-top:1px solid var(--border);
  padding:18px 0 26px;
  background: rgba(11,18,32,.55);
}
.footer__inner{display:flex; justify-content:space-between; align-items:center; gap:12px; flex-wrap:wrap}

@media (max-width: 900px){
  .hero__grid{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr}
  .contact{grid-template-columns:1fr}
  .burger{display:block}
  .nav{
    position:absolute; left:0; right:0; top:64px;
    display:none; flex-direction:column; gap:12px;
    padding:14px;
    background: rgba(11,18,32,.95);
    border-bottom:1px solid var(--border);
  }
  .nav.open{display:flex}
}