:root{font-family:system-ui,sans-serif;color:#18233b;background:#eef2f8}*{box-sizing:border-box}body{margin:0}main{max-width:800px;margin:auto;padding:24px}h1{font-size:32px}h2{font-size:22px}section{background:white;border:1px solid #ccd5e4;border-radius:12px;padding:24px;margin:20px 0}form{display:grid;gap:10px;margin:20px 0}label{display:block;margin:12px 0 8px;font-weight:600}input,button{font:inherit;min-height:44px;border-radius:8px;padding:10px 14px}input{width:100%;border:1px solid #64748b}button{background:#173d81;color:white;border:1px solid #173d81;cursor:pointer}button:disabled{background:#e2e7ef;color:#4b5563;border-color:#ccd5e4;cursor:default}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}[hidden]{display:none!important}pre{white-space:pre-wrap;overflow-wrap:anywhere;font:inherit}footer{font-size:14px;color:#465770;line-height:1.5}button:focus-visible,input:focus-visible{outline:3px solid #bc6700;outline-offset:3px}@media(max-width:420px){main{padding:12px}section{padding:18px}.actions button{flex:1 1 130px}}