body{margin:0;font:16px/1.5 system-ui,sans-serif;background:#F6F5F1;color:#141E37}main{max-width:620px;margin:8vh auto;padding:0 16px}
h1{font-size:1.6rem}label{display:block;font-weight:600;margin:1rem 0 .3rem}textarea,input{width:100%;box-sizing:border-box;border:1px solid #8A8D99;border-radius:10px;padding:.6rem;font:14px ui-monospace,monospace}
button{margin-top:1rem;background:#F2C245;color:#141E37;border:0;border-radius:10px;padding:.7rem 1.2rem;font-weight:700;cursor:pointer}
:focus-visible{outline:3px solid #141E37;outline-offset:2px}.err{color:#C42F28;font-weight:600}.ok{color:#047857;font-weight:600}.hint{color:#5F6270;font-size:14px}