body{font-family:Arial,sans-serif;background:#f4f6f8;padding:50px}.login-container{max-width:450px;margin:auto;background:white;padding:35px;border-radius:12px;box-shadow:0 5px 20px rgba(0,0,0,.15);text-align:center}input,button{width:100%;padding:12px;margin-top:10px;box-sizing:border-box}button{background:#0066cc;color:white;border:0;border-radius:6px}.notice{background:#f8f8f8;padding:15px;margin:20px 0}.security{margin-top:30px;color:#666}