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

:root {
  --bg: #0d0d0d;
  --fg: #e8e8e8;
  --muted: #555;
  --accent: #c8ff00;
}

html, body {
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

main {
  max-width: 640px;
}

.label {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

h1 {
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 2rem;
}

.sub {
  font-size: 0.85rem;
  color: var(--muted);
  letter-spacing: 0.02em;
}