:root { font: 16px system-ui,sans-serif; color-scheme: light dark; } body {margin: 0; padding: 1.5rem; background:#f2f5fa; color:#172638;}main{max-width:760px;margin:auto;background:white;padding:2rem;border-radius:16px;box-shadow:0 2px 16px #0001;}h1{margin-top:0;}small{font-size:0.6em;color:#64748b;}label{display:block;margin:1rem 0;}input{display:block;width:100%;box-sizing:border-box;padding:.6rem;border:1px solid #cbd5e1;border-radius:6px;}button{padding:.65rem 1.2rem;background:#1458ad;color:white;border:0;border-radius:8px;cursor:pointer;}pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#f5f7fb;border-radius:8px;padding:1rem;max-height:360px;overflow:auto;}#status{font-weight:600;color:#a33;}[hidden]{display:none!important}