*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-block: 88px; }
body {
  margin: 0; background: var(--bg); color: var(--ink); min-block-size: 100vh;
  font: 400 var(--fs-base) / 1.55 var(--font-ui); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  transition: background-color var(--t-med) var(--ease), color var(--t-med) var(--ease);
}
h1, h2, h3, h4 { margin: 0; font-weight: 600; line-height: 1.2; letter-spacing: -0.01em; }
h1 { font-family: var(--font-display); font-size: var(--fs-2xl); font-weight: 700; }
h2 { font-size: var(--fs-lg); } h3 { font-size: var(--fs-md); }
p { margin: 0; }
a { color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--accent-strong); }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
img, svg { max-inline-size: 100%; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: var(--r-sm); }
::selection { background: var(--accent-soft); color: var(--accent-soft-ink); }
code { font-family: ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace; font-size: 0.9em; }

.muted { color: var(--muted); }
.small-text { font-size: var(--fs-sm); }
.num { font-variant-numeric: tabular-nums; }
.visually-hidden { position: absolute; inline-size: 1px; block-size: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.sprite { position: absolute; inline-size: 0; block-size: 0; overflow: hidden; }
.icon { flex: none; display: inline-block; vertical-align: -0.2em; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
.skip { position: absolute; inset-inline-start: var(--s-2); inset-block-start: -80px; background: var(--ink); color: var(--bg); padding: var(--s-2) var(--s-4); border-radius: var(--r-md); z-index: 200; }
.skip:focus { inset-block-start: var(--s-2); }

/* spacing helpers used by the page code */
.stack > * + * { margin-block-start: var(--s-4); }
.stack-sm > * + * { margin-block-start: var(--s-2); }
.row { display: flex; flex-wrap: wrap; gap: var(--s-2); align-items: center; }
.row.end { justify-content: flex-end; } .row.between { justify-content: space-between; } .row.nowrap { flex-wrap: nowrap; }
.grid { display: grid; gap: var(--s-4); grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}
.icon.flip-v { transform: scaleY(-1); }
.stack > :empty { display: none; }
.hint { color: var(--muted); font-size: var(--fs-xs); line-height: 1.45; }
@media (pointer: coarse), (max-width: 899px) { .searchbox > .kbd { display: none; } }