Hairline stat strip

<p class="cap">Reporting only — the figures are the whole job.</p>
<dl class="hss-strip">
  <div class="hss-tile"><dt class="hss-label">Documents</dt><dd class="hss-fig">1,482</dd><dd class="hss-sub">this period</dd></div>
  <div class="hss-tile"><dt class="hss-label">Median time</dt><dd class="hss-fig">3.2s</dd><dd class="hss-sub">last 24h</dd></div>
  <div class="hss-tile"><dt class="hss-label">Clean runs</dt><dd class="hss-fig">98.4%</dd><dd class="hss-sub">no retries</dd></div>
  <div class="hss-tile"><dt class="hss-label">Quality score</dt><dd class="hss-fig dim">—</dd><dd class="hss-sub">not rated yet</dd></div>
</dl>
<p class="cap">Same strip, working as the filter. Press a tile to narrow the list; press it again to clear.</p>
<div class="hss-strip five" role="group" aria-label="Filter downloads by status">
  <button class="hss-tile" type="button" data-hss-filter="All" aria-pressed="true"><span class="hss-label">All</span><span class="hss-fig">6</span><span class="hss-sub">downloads</span></button>
  <button class="hss-tile" type="button" data-hss-filter="Queued" aria-pressed="false"><span class="hss-label">Queued</span><span class="hss-fig">2</span><span class="hss-sub">downloads</span></button>
  <button class="hss-tile" type="button" data-hss-filter="Downloading" aria-pressed="false"><span class="hss-label">Downloading</span><span class="hss-fig">1</span><span class="hss-sub">download</span></button>
  <button class="hss-tile" type="button" data-hss-filter="Done" aria-pressed="false"><span class="hss-label">Done</span><span class="hss-fig">2</span><span class="hss-sub">downloads</span></button>
  <button class="hss-tile" type="button" data-hss-filter="Failed" aria-pressed="false"><span class="hss-label">Failed</span><span class="hss-fig">1</span><span class="hss-sub">download</span></button>
</div>
<ul class="hss-list">
  <li data-status="Done">Bicycle drivetrain teardown <span>Done</span></li>
  <li data-status="Downloading">Kiln firing, part three <span>Downloading</span></li>
  <li data-status="Queued">Field recording — marsh at dawn <span>Queued</span></li>
  <li data-status="Done">Lathe restoration, episode 12 <span>Done</span></li>
  <li data-status="Failed">Sourdough hydration tests <span>Failed</span></li>
  <li data-status="Queued">Bookbinding: the long stitch <span>Queued</span></li>
</ul>
<p class="hss-status" role="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;                      /* the hairline */
  background: var(--border);     /* shows through the gap */
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  grid-template-columns: 1fr;
}
@media (min-width: 21rem) { .hss-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 42rem) { .hss-strip { grid-template-columns: repeat(4, minmax(0, 1fr)); } }

.hss-tile { background: var(--surface); padding: .9rem 1rem; min-width: 0; }
.hss-label {
  font-family: ui-monospace, monospace;
  font-size: .8125rem;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--dim);
}
.hss-fig { font-size: 1.6rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.hss-fig.dim { 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('[data-hss-filter]');
const rows = document.querySelectorAll('.hss-list li');
const status = document.querySelector('.hss-status');

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