body{margin:0;font-family:Arial,sans-serif;background:#0F172A;color:#F8FAFC}
nav{display:flex;justify-content:space-between;padding:20px}
.hero{text-align:center;padding:100px 20px}
.btn{display:inline-block;margin:5px;padding:12px 18px;background:#4FD1C5;color:#000;text-decoration:none;border-radius:8px}
.alt{background:#1E293B;color:#fff}
section{padding:50px 20px;max-width:1100px;margin:auto}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:15px}
.cards>div,details,form{background:#1E293B;padding:20px;border-radius:12px}
input,textarea{width:100%;padding:10px;margin:8px 0;box-sizing:border-box}
button{padding:12px 18px}
footer{text-align:center;padding:30px}