body{font-family:system-ui,sans-serif;max-width:360px;margin:60px auto;padding:0 10px;color:#333}h1,h2{text-align:center}button,input{width:100%;padding:12px;margin:8px 0;font-size:16px}button{cursor:pointer;background:#1c60ff;color:#fff;border:none;border-radius:4px}button:hover{background:#174ccc}.error{color:red;margin-top:10px}.link{text-align:center;margin-top:15px}