{# ── HERO ──
The band is deliberately near-black in this theme, so the heading colour is
stated outright. It used to be var(--color-surface), which the dark theme
resolves to the same near-black as the band: 1.0:1, invisible. #}
{# ── STATS ──
Every tile here is a number we can point at a source for. The old row showed
"Reach —" and "Conversions —" because `default:"—"` fires on 0 and no metric
snapshot has ever been recorded for most campaigns, so a lone dash was the
normal state rather than the exception. Tiles now render only when there is
something real to put in them. #}
