/* ==========================================================================
   base — reset, document typography, focus, accessibility
   ========================================================================== */

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

  html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    scroll-padding-top: calc(var(--header-h) + var(--s-5));
  }
  @media (prefers-reduced-motion: no-preference) {
    html:focus-within { scroll-behavior: smooth; }
  }

  body {
    margin: 0;
    min-height: 100vh;
    min-height: 100dvh;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--font);
    font-size: var(--fs-base);
    line-height: var(--lh-body);
    letter-spacing: var(--track-body);
    font-synthesis: none;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: clip;
  }
  body.is-locked { overflow: hidden; }

  h1, h2, h3, h4 {
    margin: 0;
    font-weight: var(--w-light);
    line-height: var(--lh-head);
    letter-spacing: var(--track-head);
    text-wrap: balance;
  }
  h3, h4 { font-weight: var(--w-medium); letter-spacing: var(--track-title); }
  p, ul, ol, dl, figure, blockquote { margin: 0; }
  p { text-wrap: pretty; }
  ul[role="list"], ol[role="list"] { list-style: none; padding: 0; }

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

  a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.2em; }

  button, input, select, textarea { font: inherit; color: inherit; letter-spacing: inherit; }
  button { cursor: pointer; background: none; border: 0; padding: 0; }
  a, button, input, select, textarea, label, summary { touch-action: manipulation; }

  [hidden] { display: none !important; }

  :focus { outline: none; }
  :focus-visible { outline: var(--focus); outline-offset: 3px; }
  :is(main, section, header, article, [data-autofocus])[tabindex="-1"]:focus-visible { outline: none; }

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

  hr { border: 0; border-top: 1px solid var(--line); margin: 0; }
  table { border-collapse: collapse; }

  .skip-link {
    position: fixed;
    top: var(--s-3);
    left: var(--s-3);
    z-index: var(--z-skip);
    padding: var(--s-3) var(--s-4);
    border-radius: var(--radius);
    background: var(--ink);
    color: var(--paper);
    font-size: var(--fs-sm);
    font-weight: 500;
    text-decoration: none;
    transform: translateY(-160%);
    transition: transform var(--d-fast) var(--ease-out);
  }
  .skip-link:focus-visible { transform: translateY(0); }

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

  /* Page change: a quiet cross-fade with a short rise; the header holds still. */
  .site-header { view-transition-name: site-header; }
  ::view-transition-group(site-header) { animation: none; }
  ::view-transition-old(root) { animation: 220ms var(--ease-out) both vt-out; }
  ::view-transition-new(root) { animation: 420ms var(--ease-out) both vt-in; }
  @keyframes vt-out { to { opacity: 0; } }
  @keyframes vt-in { from { opacity: 0; transform: translateY(12px); } }

  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
      animation-duration: 1ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 1ms !important;
      scroll-behavior: auto !important;
    }
  }

  @media (forced-colors: active) {
    :focus-visible { outline: 2px solid CanvasText; }
  }
}

@media (prefers-reduced-motion: no-preference) {
  @view-transition { navigation: auto; }
}

/* Print: never leave progressively-enhanced content hidden. */
@media print {
  .js [data-reveal], [data-split], [data-split] * { opacity: 1 !important; transform: none !important; translate: none !important; clip-path: none !important; }
  .site-header, .menu, .skip-link, .site-footer { display: none !important; }
  body { padding: 0 !important; background: #fff; color: #111; }
}