/* Reset and element defaults. Nothing here is decorative. */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  margin: 0;
  line-height: 1.1;
  letter-spacing: var(--tracking-display);
  font-weight: 620;
  text-wrap: balance;
}
h1 { font-size: var(--step-5); }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-1); letter-spacing: var(--tracking-tight); }
h4 { font-size: var(--step-0); letter-spacing: 0; }

p { margin: 0; max-width: var(--measure); text-wrap: pretty; }

a { color: var(--accent); text-underline-offset: 0.18em; }
a:hover { color: var(--accent-hover); }

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

ul, ol { margin: 0; padding: 0; }

/* One focus treatment everywhere. Visible, never removed. */
:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
  border-radius: var(--radius-media);
}
:focus:not(:focus-visible) { outline: none; }

/* Skip link. The single cheapest accessibility win on any page. */
.skip-link {
  position: absolute;
  left: var(--space-4);
  top: var(--space-4);
  z-index: 100;
  padding: var(--space-3) var(--space-5);
  background: var(--accent);
  color: var(--accent-ink);
  border-radius: var(--radius-interactive);
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-200%);
}
.skip-link:focus { transform: translateY(0); color: var(--accent-ink); }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}