* { box-sizing: border-box; }
  body { margin:0; min-height:100vh; display:grid; place-items:center; padding:16px; background:#f1f6f3; color:#1b1f27; font:16px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif; }
  .card { width:100%; max-width:380px; background:#fff; border:1px solid #e4e7ec; border-radius:16px; padding:26px 24px; box-shadow:0 6px 24px rgba(11,110,79,.08); }
  .brand { display:flex; align-items:center; justify-content:center; gap:10px; font-size:26px; font-weight:700; color:#0b6e4f; margin-bottom:4px; }
  .brand img { border-radius:10px; }
  p.sub { text-align:center; color:#667085; margin:0 0 18px; font-size:14px; }
  label { display:block; font-size:13px; color:#667085; margin-bottom:12px; }
  input { display:block; width:100%; margin-top:4px; padding:11px 12px; font:inherit; color:#1b1f27; border:1px solid #cfd6d2; border-radius:10px; background:#fff; }
  input:focus { outline:2px solid #0b6e4f; outline-offset:1px; }
  button { width:100%; padding:12px; margin-top:6px; font:inherit; font-weight:600; color:#fff; background:#0b6e4f; border:0; border-radius:10px; cursor:pointer; }
  button:disabled { opacity:.6; cursor:wait; }
  .passo2 { margin:0 0 14px; font-size:14px; color:#475467; }
  .chave { display:block; margin:8px 0 14px; padding:10px 12px; font:600 17px/1.3 ui-monospace,Menlo,Consolas,monospace; letter-spacing:.06em; word-break:break-all; background:#f1f6f3; border:1px dashed #b7c9bf; border-radius:10px; user-select:all; }
  .codigos { display:grid; grid-template-columns:1fr 1fr; gap:6px 12px; margin:10px 0 14px; padding:12px; font:600 15px/1.3 ui-monospace,Menlo,Consolas,monospace; background:#fffbeb; border:1px solid #f5d98b; border-radius:10px; user-select:all; }
  .qr { display:flex; justify-content:center; margin:6px 0 12px; }
  .qr svg { width:100%; max-width:240px; height:auto; border:1px solid #e4e7ec; border-radius:10px; }
  details.passo2 summary { cursor:pointer; color:#0b6e4f; }
  button.sec { background:#fff; color:#0b6e4f; border:1px solid #0b6e4f; }
  .err { margin-top:12px; padding:10px 12px; border-radius:10px; background:#fef3f2; color:#b42318; font-size:14px; }