:root{
  --bg:#070b17;
  --bg2:#0d1430;
  --panel:#121b3d;
  --panel-soft:rgba(18,27,61,.78);
  --line:rgba(158,196,255,.24);
  --text:#eef3ff;
  --muted:#bec9e8;
  --brand:#8ec5ff;
  --brand2:#6ee7d8;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  color:var(--text);
  background:
    radial-gradient(900px 500px at -10% -20%,rgba(142,197,255,.18),transparent 60%),
    radial-gradient(800px 420px at 110% 0%,rgba(110,231,216,.16),transparent 60%),
    linear-gradient(180deg,var(--bg),var(--bg2));
}

.site-header{
  position:sticky;
  top:0;
  z-index:999;
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  background:rgba(7,11,23,.96);
  border-bottom:1px solid rgba(158,196,255,.35);
  box-shadow:0 10px 26px rgba(0,0,0,.28);
}
.site-header .inner,
.site-footer .inner,
main{max-width:1040px;margin:0 auto;padding:0 20px}
.site-header .inner{
  min-height:66px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.2px}
.brand img{
  width:34px;height:34px;object-fit:contain;border-radius:8px;
  background:#fff;padding:3px;box-shadow:0 6px 14px rgba(0,0,0,.28)
}
.nav{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.nav a{
  color:#dce9ff;text-decoration:none;font-size:.88rem;
  border:1px solid var(--line);padding:7px 10px;border-radius:999px;
  background:rgba(255,255,255,.04)
}
.nav a:hover{border-color:#8ec5ff}

.hero{padding:34px 0 8px}
h1{
  font-size:clamp(1.9rem,5vw,3rem);
  line-height:1.08;
  margin:0 0 10px;
  letter-spacing:-.02em;
}
.subtitle{color:var(--muted);margin:0 0 18px;line-height:1.75;max-width:82ch}

.card{
  border:1px solid var(--line);
  border-radius:18px;
  background:var(--panel-soft);
  backdrop-filter:blur(6px);
  padding:24px;
  margin:0 0 18px;
  box-shadow:0 16px 40px rgba(2,8,25,.25);
}
.card h2,.card h3{
  margin:1.2rem 0 .6rem;
  font-size:clamp(1.05rem,2.3vw,1.35rem);
  color:#e9f2ff;
}
.card h2:first-child,.card h3:first-child{margin-top:0}
.card p,.card li{color:var(--muted);line-height:1.8;margin:.55rem 0}
.card ul{padding-left:1.2rem}

.site-footer{
  border-top:1px solid var(--line);
  margin-top:30px;
  padding:20px 0 30px;
  color:#a6b7df;
  font-size:.9rem;
}

@media (max-width:700px){
  .site-header .inner{min-height:60px;align-items:flex-start;padding-top:10px;padding-bottom:10px}
  .site-header .inner,main,.site-footer .inner{padding-left:14px;padding-right:14px}
  .hero{padding:24px 0 6px}
  .card{padding:16px;border-radius:14px}
  .brand{width:100%}
  .nav{width:100%;justify-content:flex-start}
  .nav a{padding:6px 9px;font-size:.82rem}
}