html, body { margin: 0; min-height: 100%; }
body {
  background: #efe8dc;
  color: #1c1712;
  font: 18px/1.45 Georgia, "Times New Roman", serif;
}
main {
  max-width: 34rem;
  margin: 0 auto;
  padding: 5rem 1.2rem;
}
h1 {
  font-size: 2.4rem;
  font-weight: 400;
  margin: 0 0 0.4rem;
}
p { margin: 0 0 1.5rem; color: #5c5348; }
form, #out { display: flex; flex-direction: column; gap: 0.55rem; }
input {
  font: 16px/1.4 "Segoe UI", Tahoma, sans-serif;
  border: 1px solid #1c1712;
  background: #f7f2ea;
  padding: 0.7rem 0.8rem;
}
button {
  font: inherit;
  background: #1c1712;
  color: #efe8dc;
  border: 0;
  padding: 0.7rem 1rem;
  cursor: pointer;
}
#err { color: #8a2f1e; }
#err[hidden], #out[hidden] { display: none; }
#out { margin-top: 1.2rem; }
#out input { letter-spacing: 0.02em; }