body{font-family:Arial;background:#f4f6f8;margin:0}.hero{background:#1565c0;color:#fff;padding:60px;text-align:center}.c{max-width:900px;margin:auto;padding:20px}.card{background:#fff;padding:30px;border-radius:12px;box-shadow:0 4px 12px rgba(0,0,0,.1)}footer{text-align:center;padding:20px;background:#222;color:#fff;margin-top:30px}