body{margin:0;font-family:Arial,sans-serif;background:#0b1020;color:#eef}header{background:linear-gradient(135deg,#1d4ed8,#06b6d4);padding:20px 8%}nav{display:flex;justify-content:space-between;align-items:center}nav a{color:#fff;text-decoration:none;margin-left:18px}.hero,section{padding:60px 8%}.btn{background:#fff;color:#1d4ed8;padding:12px 18px;border-radius:8px;text-decoration:none;font-weight:bold}.card{background:#151c35;padding:20px;border-radius:12px;margin:16px 0}footer{text-align:center;padding:20px;background:#060914}input,textarea{width:100%;padding:10px;margin:8px 0}button{padding:12px 18px;background:#2563eb;color:#fff;border:0;border-radius:8px}