:root {
  color-scheme: dark;
  background: #050805;
  color: #39ff88;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}
* { box-sizing: border-box; }
body { margin: 0; }
main {
  min-height: 100vh;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}
h1 {
  margin: 0;
  font-size: clamp(1.125rem, 4vw, 2.4rem);
  font-weight: 400;
  letter-spacing: .06em;
  white-space: nowrap;
  text-shadow: 0 0 20px rgb(57 255 136 / 28%);
}
.cursor {
  display: inline-block;
  width: .54em;
  height: 1.05em;
  margin-left: .35em;
  vertical-align: -.14em;
  background: currentColor;
  animation: blink 1.2s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .cursor { animation: none; } }