body{margin:0;font-family:Arial,sans-serif;background:#0f172a;color:#fff;line-height:1.6}
.header{position:fixed;top:0;left:0;width:100%;background:#102542;z-index:1000;padding:15px 0;box-shadow:0 2px 12px rgba(0,0,0,.2)}
.nav{width:90%;max-width:1200px;margin:auto;display:flex;justify-content:space-between;align-items:center}
.nav h1{margin:0;font-size:32px}
.nav nav a{color:#fff;text-decoration:none;margin-left:18px;font-size:18px}
.hero{min-height:100vh;position:relative;display:flex;align-items:center;justify-content:center;text-align:center;background:url('https://images.unsplash.com/photo-1531834685032-c34bf0d84c77?auto=format&fit=crop&w=1400&q=80') center/cover no-repeat}
.overlay{position:absolute;inset:0;background:rgba(0,0,0,.58)}
.hero-content{position:relative;z-index:2;width:90%;max-width:900px}
.hero h2{font-size:48px;margin-bottom:12px}
.hero p{font-size:22px;margin-bottom:16px}
.btn{display:inline-block;background:#22c55e;color:#fff;text-decoration:none;padding:12px 28px;border-radius:6px;font-weight:bold}
.section{padding:100px 20px;text-align:center}
.alt{background:#162033}
.dark{background:#0b1220}
.cards{display:flex;gap:22px;flex-wrap:wrap;justify-content:center;max-width:1200px;margin:30px auto 0}
.card{background:#1e293b;width:300px;border-radius:12px;overflow:hidden;box-shadow:0 8px 24px rgba(0,0,0,.2);transition:transform .35s ease, box-shadow .35s ease}
.card:hover{transform:translateY(-10px) scale(1.03);box-shadow:0 14px 30px rgba(0,0,0,.28)}
.card img{width:100%;height:190px;object-fit:cover;display:block}
.card h3{margin:18px 0 10px}
.card p{padding:0 18px 22px}
.content-box{max-width:900px;margin:auto}
iframe{width:100%;max-width:1000px;height:320px;border:0;border-radius:10px;margin-top:22px}
footer{background:#08101d;text-align:center;padding:24px 20px}
.fade{opacity:0;transform:translateY(40px);transition:all 1s ease}
.fade.show{opacity:1;transform:translateY(0)}
.delay{transition-delay:.25s}
.delay2{transition-delay:.5s}
@media(max-width:768px){
  .nav{flex-direction:column;gap:10px}
  .nav h1{font-size:24px;text-align:center}
  .nav nav a{margin:0 8px;font-size:16px}
  .hero h2{font-size:30px}
  .hero p{font-size:18px}
  .section{padding:90px 16px}
  .cards{flex-direction:column;align-items:center}
}