*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #0d0d0d;
  --fg: #f0f0f0;
  --muted: #666;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'Georgia', serif;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 2rem;
}

main {
  max-width: 480px;
  width: 100%;
  text-align: center;
}

.icon {
  font-size: 3rem;
  margin-bottom: 2rem;
  display: block;
}

h1 {
  font-size: clamp(2rem, 8vw, 3.5rem);
  font-weight: normal;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.sub {
  font-family: 'Courier New', monospace;
  color: var(--muted);
  font-size: 0.875rem;
  letter-spacing: 0.06em;
}

footer {
  position: fixed;
  bottom: 1.5rem;
  right: 2rem;
  font-size: 0.75rem;
  color: #333;
  font-family: 'Courier New', monospace;
}