:root{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#172033;background:#f4f6fa}*{box-sizing:border-box}body{margin:0}.shell{min-height:100vh;display:grid;place-items:center;padding:32px 18px}.card{width:min(720px,100%);background:white;border:1px solid #e5e9f2;border-radius:24px;padding:32px;box-shadow:0 24px 70px rgba(23,32,51,.10)}.brand{width:48px;height:48px;border-radius:14px;background:#172033;color:white;display:grid;place-items:center;font-weight:800;font-size:24px}.eyebrow{margin:24px 0 6px;font-size:12px;font-weight:800;letter-spacing:.12em;color:#657089}h1{margin:0 0 10px;font-size:32px}.muted{color:#778197}.stack{display:grid;gap:16px;margin-top:26px}.grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}label{display:grid;gap:7px;font-weight:700;font-size:14px}input{width:100%;border:1px solid #d7ddea;border-radius:12px;padding:12px 14px;font:inherit;outline:none}input:focus{border-color:#7c8ca9;box-shadow:0 0 0 3px rgba(124,140,169,.15)}button{border:0;border-radius:12px;padding:13px 18px;background:#172033;color:#fff;font:inherit;font-weight:800;cursor:pointer}button:disabled{opacity:.55;cursor:wait}.result{min-height:24px;margin:16px 0 0;color:#526078}.result.error{color:#b42318}@media(max-width:640px){.card{padding:24px 18px}.grid{grid-template-columns:1fr}h1{font-size:27px}}