* { box-sizing: border-box; }

html {
  background: var(--color-bg-deep);
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--color-text);
  background:
    radial-gradient(circle at 50% -20%, rgb(0 217 232 / 8%), transparent 34rem),
    linear-gradient(180deg, var(--color-bg-deep), var(--color-bg) 32rem);
  font: 400 16px/1.65 var(--font-body);
}

body.navigation-open { overflow: hidden; }

a { color: var(--color-cyan); }

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

button,
input,
select,
textarea,
.button { min-block-size: 44px; }

button,
.button { cursor: pointer; }

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

h1,
h2,
h3,
p,
blockquote,
figure { margin: 0; }

h1,
h2,
h3 { font-family: var(--font-display); }

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

.section {
  position: relative;
  width: min(calc(100% - (var(--page-gutter) * 2)), var(--content-max));
  margin: 14px auto 0;
  border: 1px solid var(--border-subtle);
  background: var(--color-panel);
}

.lead {
  max-width: 65ch;
  color: var(--color-muted);
  font-size: 1.1rem;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 8px;
  left: 8px;
  padding: 8px 14px;
  color: #08090c;
  background: var(--color-focus);
  transform: translateY(-160%);
}

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

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

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