:root{--ink:#16213a;--muted:#5a6478;--line:#dde2ea;--blue:#2747c7;--bg:#f6f7fb}
*{box-sizing:border-box}
body{margin:0;font:16px/1.5 system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg)}
main{max-width:640px;margin:0 auto;padding:40px 16px 64px}
h1{font-size:28px;margin:0 0 8px}
.lead{color:var(--muted)}
section{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;margin-top:20px}
h2{font-size:18px;margin:0 0 12px}
label{display:block;margin-bottom:12px;font-weight:600;font-size:14px}
input,textarea{display:block;width:100%;margin-top:4px;padding:10px;border:1px solid var(--line);border-radius:8px;font:inherit}
button{padding:10px 18px;border:0;border-radius:999px;background:var(--blue);color:#fff;font:inherit;font-weight:600;cursor:pointer}
button[disabled]{opacity:.6;cursor:wait}
.hp{position:absolute;left:-9999px}
.status{min-height:1.5em;font-size:14px;color:var(--muted)}
.status.ok{color:#17784a}.status.err{color:#b42318}
pre{margin:0;white-space:pre-wrap;font-size:13px;color:var(--muted)}