:root{
  --ink:#0b1420; --bg:#f7f9fc; --brand:#18a06a; --accent:#173455; --line:#e2eaf3;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:#0b66d0;text-decoration:none}
.container{max-width:1140px;margin:0 auto;padding:0 20px}
/* Header */
.site-header{position:sticky;top:0;background:linear-gradient(90deg,#0b1420,#0e2032);color:#cfe6ff;z-index:20;border-bottom:1px solid #132235}
.site-header .container{display:flex;align-items:center;justify-content:space-between;padding:12px 20px}
.brand{display:flex;align-items:center;gap:12px}
.logo{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,#37a7ff,#0aa86e);display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff}
.brand-text h1{margin:0;font-size:18px;color:#fff}
.brand-text p{margin:2px 0 0;font-size:12px;opacity:.85}
.nav ul{display:flex;gap:14px;list-style:none;margin:0;padding:0;flex-wrap:wrap}
.nav a{color:#cfe6ff;padding:8px 12px;border-radius:10px;display:block;border:1px solid transparent}
.nav a:hover,.nav a.active{background:#173455;border-color:#205082;color:#fff;box-shadow:0 6px 14px rgba(19,52,85,.35)}
/* Hero */
.hero{position:relative;min-height:40vh;display:flex;align-items:center;overflow:hidden;border-bottom:1px solid var(--line);background:#0b1420}
.hero .backdrop{position:absolute;inset:0;background:
  linear-gradient(180deg,rgba(11,20,32,.55),rgba(11,20,32,.8)),
  url('https://images.unsplash.com/photo-1581091012184-5c1c3e25c75b?q=80&w=1600&auto=format&fit=crop') center/cover no-repeat;
  filter:contrast(1.05) brightness(.9);
}
.hero .hero-content{position:relative;color:#fff;padding:72px 20px}
.hero h2{font-size:40px;margin:0 0 8px}
.hero p{opacity:.95;max-width:760px}
/* Sections */
.section{padding:54px 0}
.section h3{margin:0 0 10px}
.lead{opacity:.9}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:0 8px 18px rgba(11,20,32,.05)}
.card h4{margin:0 0 8px}
/* Footer */
.site-footer{background:#0b1420;color:#9cc5ff;padding:24px 0;margin-top:24px;border-top:1px solid #132235}
.site-footer a{color:#cfe6ff}
/* Buttons */
.btn{display:inline-block;background:var(--brand);color:#fff;padding:10px 14px;border-radius:10px;border:1px solid transparent;font-weight:600}
.btn-outline{background:transparent;border-color:#9fd9ff;color:#9fd9ff}
/* Responsive */
@media (max-width: 900px){
  .cards{grid-template-columns:1fr}
  .hero h2{font-size:32px}
}