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

html {
  min-width: 20rem;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + var(--space-s));
  text-size-adjust: 100%;
}

body {
  min-width: 20rem;
  margin: 0;
  overflow-x: clip;
  background:
    radial-gradient(circle at 76% 6%, color-mix(in srgb, var(--colour-steel-dark) 36%, transparent), transparent 24rem),
    var(--colour-midnight);
  color: var(--colour-chalk);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.48;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  z-index: 20;
  inset: 0;
  border: var(--line-hairline) solid var(--colour-rule-dark);
  pointer-events: none;
  content: "";
}

main {
  position: relative;
  isolation: isolate;
}

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

img,
video {
  width: 100%;
  height: auto;
}

button,
input,
textarea,
select {
  color: inherit;
  font: inherit;
}

button,
[type="submit"] {
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

p,
h1,
h2,
h3,
figure {
  margin-block-start: 0;
}

h1,
h2,
h3 {
  text-wrap: balance;
}

h1,
h2 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 0.91;
}

h3 {
  font-size: var(--step-2);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.04;
}

p {
  max-width: var(--measure);
}

::selection {
  background: var(--colour-signal);
  color: var(--colour-ink);
}

:focus-visible {
  border-radius: var(--radius-xs);
  outline: var(--line-control) solid var(--colour-signal);
  outline-offset: 0.2rem;
  box-shadow: var(--shadow-focus);
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: var(--space-s);
  left: var(--space-s);
  padding: var(--space-xs) var(--space-s);
  transform: translateY(-180%);
  border-radius: var(--radius-pill);
  background: var(--colour-chalk);
  color: var(--colour-ink);
  font-weight: 600;
  text-decoration: none;
  transition: transform var(--duration-fast) var(--ease-quiet);
}

.skip-link:focus {
  transform: translateY(0);
}

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

.light-section {
  color-scheme: light;
  background: var(--colour-chalk);
  color: var(--colour-ink);
}

.dark-section {
  color-scheme: dark;
  background: var(--colour-midnight);
  color: var(--colour-chalk);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}