Hairline stat strip

<p class="hss-caption">Reporting only — the figures are the whole job.</p>
<div class="hss-strip four">
  <div class="hss-tile"><span class="lab">Documents</span><span class="fig">1,482</span><span class="sub">this period</span></div>
  <div class="hss-tile"><span class="lab">Median time</span><span class="fig">3.2s</span><span class="sub">last 24h</span></div>
  <div class="hss-tile"><span class="lab">Clean runs</span><span class="fig">98.4%</span><span class="sub">no retries</span></div>
  <div class="hss-tile"><span class="lab">Quality score</span><span class="fig none">—</span><span class="sub">not rated yet</span></div>
</div>
<p class="hss-caption">Same strip, working as the filter. Press a tile to narrow the list; press it again to clear.</p>
<div class="hss-strip five hss-filter">
  <button class="hss-tile" type="button" data-state="All" aria-pressed="true"><span class="lab">All</span><span class="fig">6</span><span class="sub">downloads</span></button>
  <button class="hss-tile" type="button" data-state="Queued" aria-pressed="false"><span class="lab">Queued</span><span class="fig">2</span><span class="sub">downloads</span></button>
  <button class="hss-tile" type="button" data-state="Downloading" aria-pressed="false"><span class="lab">Downloading</span><span class="fig">1</span><span class="sub">downloads</span></button>
  <button class="hss-tile" type="button" data-state="Done" aria-pressed="false"><span class="lab">Done</span><span class="fig">2</span><span class="sub">downloads</span></button>
  <button class="hss-tile" type="button" data-state="Failed" aria-pressed="false"><span class="lab">Failed</span><span class="fig">1</span><span class="sub">downloads</span></button>
</div>
<ul class="hss-list">
  <li data-state="Done">Bicycle drivetrain teardown <span class="st">Done</span></li>
  <li data-state="Downloading">Kiln firing, part three <span class="st">Downloading</span></li>
  <li data-state="Queued">Field recording — marsh at dawn <span class="st">Queued</span></li>
  <li data-state="Done">Lathe restoration, episode 12 <span class="st">Done</span></li>
  <li data-state="Failed">Sourdough hydration tests <span class="st">Failed</span></li>
  <li data-state="Queued">Bookbinding: the long stitch <span class="st">Queued</span></li>
</ul>
<p class="hss-status" aria-live="polite">Showing all 6 downloads.</p>

Colors come from shared theme tokens — --surface, --ink, --border, --accent and friends — so this CSS carries no palette of its own. Use Runnable file to copy the tokens along with it.

.hss-strip {
  display: grid;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  grid-template-columns: minmax(0, 1fr);
}
@container (min-width: 21rem) { .hss-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@container (min-width: 42rem) { .hss-strip { grid-template-columns: repeat(4, minmax(0, 1fr)); } }

.hss-tile { background: var(--surface); padding: 0.9rem 1rem; min-width: 0; }
.hss-label {
  font-family: ui-monospace, monospace;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--dim);
  overflow-wrap: anywhere;
}
.hss-figure { font-size: 1.6rem; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--ink); }
.hss-figure[data-missing] { color: var(--dim); font-weight: 400; }

button.hss-tile[aria-pressed="true"] {
  background: color-mix(in srgb, var(--accent) 14%, var(--surface));
}

const tiles = document.querySelectorAll('.hss-filter .hss-tile');
const rows = document.querySelectorAll('.hss-list li');
const status = document.querySelector('.hss-status');

tiles.forEach((tile) => {
  tile.addEventListener('click', () => {
    const wasPressed = tile.getAttribute('aria-pressed') === 'true';
    const state = wasPressed ? 'All' : tile.dataset.state;
    tiles.forEach((other) => other.setAttribute('aria-pressed', String(other.dataset.state === state)));
    let shown = 0;
    rows.forEach((row) => {
      row.hidden = state !== 'All' && row.dataset.state !== state;
      if (!row.hidden) shown += 1;
    });
    status.textContent = state === 'All'
      ? `Showing all ${rows.length} downloads.`
      : `Filtered to ${state}: ${shown} of ${rows.length}. Press the lit tile again to clear.`;
  });
});

Excerpt. The full prompt lives with the pattern source.