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

html {
  height: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  background-color: #919191;
  color: #f8f8f8;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  padding: clamp(12px, 3.5vw, 24px);
}

.stage {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 0;
}

.hero {
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: min(92vw, 720px);
  max-height: min(
    calc(100dvh - 2 * clamp(12px, 3.5vw, 24px)),
    calc(100vh - 2 * clamp(12px, 3.5vw, 24px))
  );
}

.hero__mark {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
  animation: mark-breathe 1.65s ease-in-out infinite;
  transform-origin: center center;
}

@keyframes mark-breathe {
  0%,
  100% {
    opacity: 0.62;
    transform: scale(1);
  }

  50% {
    opacity: 1;
    transform: scale(1.028);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero__mark {
    animation: none;
    opacity: 1;
  }
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}