* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: #f5f6f8;
  color: #1b1b1f;
  min-height: 100vh;
}

main {
  max-width: 480px;
  margin: 0 auto;
  padding: 32px 16px 48px;
}

section { text-align: center; }

h1 { font-size: 1.75rem; margin: 0 0 12px; }
h2 { font-size: 1.35rem; margin: 0 0 16px; }

p { margin: 0 0 20px; line-height: 1.5; }

button {
  font: inherit;
  font-size: 1.1rem;
  min-height: 48px;
  min-width: 120px;
  padding: 12px 24px;
  border: 2px solid #2563eb;
  border-radius: 10px;
  background: #2563eb;
  color: #ffffff;
  cursor: pointer;
}

button:hover { background: #1d4ed8; }

button:focus-visible {
  outline: 3px solid #f59e0b;
  outline-offset: 2px;
}

.answers {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 8px;
}

.answers button { width: 100%; }

#copied { color: #15803d; font-weight: 600; }

@media (min-width: 600px) {
  main { padding-top: 64px; }
  .answers { flex-direction: row; justify-content: center; }
  .answers button { width: auto; }
}