*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}
body{font-family:Segoe UI,Arial,sans-serif;color:#1f2937}
header{position:fixed;top:0;width:100%;display:flex;justify-content:space-between;align-items:center;padding:18px 6%;background:#0f172acc;color:#fff;backdrop-filter:blur(8px)}
nav a{color:#fff;text-decoration:none;margin-left:18px}
.brand{display:flex;gap:12px;align-items:center}.logo{width:54px;height:54px;border:2px dashed #fff;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:12px}
.hero{height:100vh;background:linear-gradient(rgba(15,23,42,.75),rgba(15,23,42,.8)),#334155;display:flex;align-items:center}
.overlay{padding:0 6%;color:#fff;max-width:850px}
h1{font-size:60px;margin-bottom:20px}h2{font-size:38px;margin-bottom:16px}
.btn{display:inline-block;margin-top:24px;background:#2563eb;color:#fff;text-decoration:none;padding:14px 24px;border-radius:30px}
.container{padding:90px 6%}
.dark{background:#0f172a;color:#fff}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;margin-top:30px}
.features div,.card{background:#fff;color:#111827;border-radius:14px;padding:22px;box-shadow:0 10px 25px rgba(0,0,0,.08)}
.dark .features div{background:#1e293b;color:#fff}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:20px}
.ph{height:80px;border:2px dashed #94a3b8;border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:14px;color:#64748b}
footer{background:#020617;color:#fff}
.wa{position:fixed;right:20px;bottom:20px;width:60px;height:60px;border-radius:50%;background:#25D366;color:#fff;text-decoration:none;display:flex;align-items:center;justify-content:center;font-size:28px}
@media(max-width:800px){nav{display:none}h1{font-size:40px}}