:root {
  --bg: #11131a;
  --fg: #e8ecf4;
  --muted: #98a2b8;
  --accent: #7cd4a0;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

main {
  max-width: 34rem;
  text-align: center;
}

h1 {
  margin: 0 0 1.5rem;
  font-size: clamp(2.5rem, 9vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.answer {
  margin: 0 0 1.25rem;
  font-size: clamp(1.1rem, 3.2vw, 1.4rem);
}

.note {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
}

kbd, code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
  padding: 0.15em 0.45em;
  border-radius: 6px;
  background: #1c1f2b;
  border: 1px solid #2c3142;
  white-space: nowrap;
}

code {
  color: var(--accent);
}