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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: auto;
  scrollbar-gutter: stable;
}

/* Cover intro: the whole screen starts covered in vermilion (hero.js closes it down to the quarter circle). */
.intro {
  display: none;
}

html.has-intro {
  overflow: hidden;
}

html.has-intro .intro {
  display: block;
  position: fixed;
  inset: 0;
  z-index: 300;
  pointer-events: none;
}

.intro__clip,
.intro__fill {
  position: absolute;
  inset: 0;
}

.intro__fill {
  background: var(--vermilion);
}

.intro__logo {
  position: absolute;
  left: 50%;
  top: 50%;
  width: clamp(220px, 28vw, 380px);
  height: auto;
  translate: -50% -50%;
}

/* The real quarter stays hidden until the cover has closed down onto it. */
html.has-intro .quarter {
  visibility: hidden;
}

body {
  margin: 0;
  background: var(--carbon);
  color: var(--marfil);
  font-family: var(--font);
  font-weight: 400;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--vermilion);
  outline-offset: 3px;
}

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

.skip {
  position: absolute;
  left: var(--gutter);
  top: -100px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--vermilion);
  color: var(--carbon);
  font-weight: 600;
  text-decoration: none;
}

.skip:focus {
  top: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 0.85em 1.4em;
  border-radius: 999px;
  background: var(--vermilion);
  color: var(--carbon);
  font-weight: 600;
  font-size: var(--fs-small);
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: transform 0.3s var(--ease), background 0.3s var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
  background: var(--marfil);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}