#challenge-screen {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: grid;
  place-items: center;
  padding: 24px;
  background: #101416;
  text-align: center;
}
#challenge-screen[hidden] { display: none; }
.challenge-content { max-width: 580px; }
.challenge-label { color: #ffd37f; text-transform: uppercase; letter-spacing: .14em; font-size: 12px; }
#challenge-title { margin: 16px 0; font-size: clamp(40px, 8vw, 76px); line-height: 1.05; }
#challenge-description { color: #c3cbd0; line-height: 1.6; }
#challenge-launch {
  margin: 24px 0 8px;
  padding: 16px 24px;
  border: 2px solid #ffd37f;
  background: #ffd37f;
  color: #101416;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}
#challenge-launch:hover { background: #ffe1a7; }
#challenge-launch:focus-visible { outline: 3px solid #fff; outline-offset: 5px; }
.challenge-note { color: #8c979d; font-size: 12px; }
#challenge-screen[data-phase="complete"] .challenge-content { max-width: 900px; }
#challenge-screen[data-phase="complete"] #challenge-title { color: #ffd37f; font-size: clamp(36px, 7vw, 80px); font-weight: 750; line-height: 1.15; }