:root {
  --bg:#0b1020;
  --panel:#161e33;
  --text:#f1f5ff;
  --muted:#a6b3cb;
  --blue:#74a4ff;
  --border:#293450;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font:16px/1.8 Arial,sans-serif;
}
a{color:inherit;text-decoration:none}
.wrap{max-width:1120px;margin:auto;padding:0 24px}
header{
  background:#0f172a;
  border-bottom:1px solid var(--border);
}
nav{
  min-height:80px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.logo{font-size:24px;font-weight:800}
.logo span{color:var(--blue)}
nav .links{display:flex;gap:24px;flex-wrap:wrap}
.links a{color:var(--muted);font-size:14px}
.links a:hover{color:var(--blue)}
.hero{
  padding:110px 0;
  background:radial-gradient(
    ellipse at 85% 15%,#203b70 0%,transparent 55%
  );
}
.kicker{
  font-size:12px;
  letter-spacing:2px;
  text-transform:uppercase;
  color:var(--blue);
  font-weight:bold;
}
h1{
  font-size:clamp(38px,6vw,68px);
  line-height:1.13;
  letter-spacing:-1.5px;
  max-width:850px;
}
h2{font-size:clamp(27px,4vw,38px);line-height:1.25}
h3{font-size:23px;line-height:1.3}
p{color:var(--muted)}
.lead{font-size:19px;max-width:720px}
.btn{
  display:inline-block;
  background:var(--blue);
  color:#081225;
  border-radius:9px;
  font-weight:700;
  padding:12px 24px;
  margin-top:22px;
}
section.block{
  padding:72px 0;
  border-top:1px solid var(--border);
}
.grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px;
  margin-top:32px;
}
.card{
  display:block;
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:14px;
  padding:30px;
  transition:transform .2s,border-color .2s;
}
.card:hover{
  transform:translateY(-5px);
  border-color:var(--blue);
}
.card h3{margin:12px 0}
.card p{font-size:15px}
.tag{
  color:var(--blue);
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:1px;
}
.feature{
  padding:46px;
  background:linear-gradient(120deg,#203b70,#121a2d);
  border:1px solid #34538a;
  border-radius:18px;
}
.article{
  max-width:820px;
  margin:auto;
  padding:75px 24px 100px;
}
.article h1{font-size:clamp(36px,5vw,55px)}
.article h2{margin-top:42px;font-size:28px}
.article p,.article li{font-size:17px;line-height:1.9}
.article li{color:var(--muted);margin-bottom:10px}
footer{
  border-top:1px solid var(--border);
  padding:32px 0;
  color:var(--muted);
  font-size:14px;
}
@media(max-width:760px){
  nav{
    align-items:flex-start;
    flex-direction:column;
    padding:18px 0;
  }
  nav .links{gap:15px}
  .grid{grid-template-columns:1fr}
  .hero{padding:70px 0}
  section.block{padding:48px 0}
  .feature{padding:25px}
}