:root{
  --bg:#0b1220;
  --panel:#121b2d;
  --text:#e8eef9;
  --muted:#9fb0ca;
  --accent:#7cc4ff;
  --line:#22314a;
  --max:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background:#f7f9fc;color:#182033;line-height:1.65;
}
a{color:#245fb8;text-decoration:none}
a:hover{text-decoration:underline}
header{
  background:var(--bg);color:var(--text);border-bottom:1px solid var(--line);
}
.wrap{max-width:var(--max);margin:auto;padding:0 22px}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
.brand{font-weight:800;color:white;letter-spacing:.2px}
nav{display:flex;gap:18px;flex-wrap:wrap}
nav a{color:#dbe8fb;font-size:15px}
.hero{
  background:linear-gradient(180deg,#0b1220 0%,#16233b 100%);
  color:white;padding:72px 0 64px;
}
.hero h1{font-size:clamp(34px,5vw,60px);line-height:1.08;margin:0 0 18px;max-width:850px}
.hero p{max-width:720px;color:#c6d4ea;font-size:19px}
.badge{display:inline-block;border:1px solid #365074;border-radius:999px;padding:6px 11px;color:#bcd9ff;font-size:13px;margin-bottom:16px}
main{padding:46px 0 64px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{
  background:white;border:1px solid #e2e8f0;border-radius:14px;padding:24px;
  box-shadow:0 5px 20px rgba(22,34,56,.05)
}
.card h2,.card h3{margin-top:0}
.kicker{text-transform:uppercase;letter-spacing:.08em;font-size:12px;font-weight:700;color:#60718e}
.meta{font-size:14px;color:#64748b}
.prose{max-width:820px}
.prose h1{font-size:38px;line-height:1.15}
.prose h2{margin-top:34px}
.callout{border-left:4px solid #7cc4ff;background:#eef7ff;padding:16px 18px;border-radius:8px}
footer{background:#0b1220;color:#9fb0ca;padding:34px 0;margin-top:40px}
footer a{color:#dbe8fb}
.footergrid{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
ul.clean{padding-left:18px}
.btn{display:inline-block;background:#2a6cc5;color:white;padding:10px 15px;border-radius:9px;font-weight:650}
.btn:hover{text-decoration:none;filter:brightness(1.05)}
@media(max-width:800px){.grid{grid-template-columns:1fr}.nav{align-items:flex-start;padding-top:18px;padding-bottom:18px;flex-direction:column}.hero{padding:50px 0}}