Hairline stat strip

Reporting only — the figures are the whole job.

Same strip, working as the filter. Press a tile to narrow the list; press it again to clear.

• Bicycle drivetrain teardown Done
• Kiln firing, part three Downloading
• Field recording — marsh at dawn Queued
• Lathe restoration, episode 12 Done
• Sourdough hydration tests Failed
• Bookbinding: the long stitch Queued

Showing all 6 downloads.

<div class="hss-strip">
  <div class="hss-tile">
    <span class="k">Documents</span>
    <span class="v">1,482</span>
    <span class="u">this period</span>
  </div>
  <!-- … three more tiles … -->
  <div class="hss-tile">
    <span class="k">Quality score</span>
    <span class="v none" aria-label="not rated">—</span>
    <span class="u">not rated yet</span>
  </div>
</div>

<div class="hss-strip five" role="group" aria-label="Filter downloads by state">
  <button type="button" class="hss-tile" aria-pressed="true">
    <span class="k">All</span><span class="v">6</span><span class="u">downloads</span>
  </button>
  <!-- Queued · Downloading · Done · Failed -->
</div>

Colors come from shared theme tokens (--surface, --ink, --border, --accent and friends), so this CSS carries no palette of its own.

.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, 1fr); } }
@media (min-width: 42rem) { .hss-strip { grid-template-columns: repeat(4, 1fr); } }

.hss-tile {
  background: var(--surface);
  padding: .7rem .8rem;
  min-width: 0;                     /* lets long labels wrap, not overflow */
}
.hss-tile .k { font: .8125rem ui-monospace, monospace; text-transform: uppercase; }
.hss-tile .v { font-size: 1.6rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.hss-tile .v.none { color: var(--dim); font-weight: 400; }

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

strip.querySelectorAll('button').forEach((tile) => {
  tile.addEventListener('click', () => {
    const wasOn = tile.getAttribute('aria-pressed') === 'true'
    const state = wasOn ? 'All' : tile.dataset.state
    for (const other of strip.querySelectorAll('button')) {
      other.setAttribute('aria-pressed', String(other.dataset.state === state))
    }
    for (const row of rows) {
      row.hidden = state !== 'All' && row.dataset.state !== state
    }
  })
})

Build a strip of statistic tiles that reads as one joined instrument panel rather than a row of floating cards.

The separators between tiles must not be borders. Make the container a CSS grid with gap: 1px and give the container itself the border color as its background; each tile then paints the surface color on top. The 1px of container showing through the gap is the hairline. This is the entire pattern: real borders double where two tiles meet and leave a stray edge when auto-fit wraps the row, and a gap physically cannot do either.

The full prompt continues with pinning column counts, tile anatomy, two rules of honesty (render a missing value as a dimmed em dash; keep units with the number), the filter form, computing counts from the unfiltered set, and using aria-pressed rather than tab roles.