body{margin:0;font-family:Arial;background:#f4f8fc}header,footer{background:#0b3d91;color:#fff;padding:18px}nav a{color:#fff;margin:10px}.hero{background:#1f6feb;color:#fff;padding:70px;text-align:center}.container{max-width:1000px;margin:auto;padding:30px}.card{background:#fff;padding:20px;box-shadow:0 2px 6px #ccc}