/**
 * Built & Launched — Readership
 * ---------------------------------------------------------------------------
 * The one rule /readership.php needs beyond what site.css already carries for
 * every other chart: the tiles under a heat layer are always dimmed here,
 * where map.php only dims them in its density view (see
 * .map-view-heat .map-canvas .leaflet-tile-pane in site.css) because this page
 * has no pin view to switch away from.
 */

.fleet-map--heat .leaflet-tile-pane {
  filter: grayscale(0.92) contrast(0.82) brightness(1.08);
}