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

:root {
  --bg: #0f0f0f;
  --text: #f0f0f0;
  --muted: #666;
  --accent: #f0f0f0;
  --rule: #2a2a2a;
}

html, body {
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
}

main {
  text-align: center;
  padding: 2rem;
}

.label {
  font-family: "Courier New", Courier, monospace;
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

h1 {
  font-size: clamp(2.5rem, 8vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--accent);
  line-height: 1;
}

.amp {
  color: var(--muted);
  font-weight: 300;
}

.tagline {
  margin-top: 1.75rem;
  font-family: "Courier New", Courier, monospace;
  font-size: clamp(0.75rem, 2vw, 0.9rem);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  min-height: 1.4em;
}

.cursor {
  display: inline-block;
  animation: blink 1s step-start infinite;
  color: var(--muted);
  margin-left: 1px;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}