:root {
  --black: #11100f;
  --paper: #e6e2d8;
  --faded: #aaa69e;
}

* { box-sizing: border-box; }

body {
  min-width: 320px;
  min-height: 100svh;
  margin: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  color: var(--paper);
  background: var(--black);
  font-family: "Space Grotesk", Arial, sans-serif;
}

.countdown {
  width: min(1160px, calc(100% - 48px));
}

.timer {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.unit {
  min-width: 0;
}

.unit:first-child {
  padding-left: 0;
  border-left: 0;
}

output {
  display: block;
  font-family: "", monospace;
  font-size: clamp(3.1rem, 9vw, 8.2rem);
  font-weight: 500;
  letter-spacing: -.12em;
  line-height: .78;
  text-align: center;
}

.unit span {
  display: block;
  margin-top: .85rem;
  color: var(--faded);
  font-family: "", monospace;
  font-size: clamp(.54rem, .92vw, .7rem);
  letter-spacing: .08em;
}

@media (max-width: 580px) {
  .countdown { width: min(100% - 32px, 480px); }
  .timer { grid-template-columns: repeat(2, 1fr); }
  .unit:nth-child(3) { padding-left: 0; border-top: 1px solid #5c5954; border-left: 0; }
  .unit:nth-child(4) { border-top: 1px solid #5c5954; }
  output { font-size: clamp(4rem, 23vw, 6rem); }
}