diff --git a/scripts/04_build_maps.py b/scripts/04_build_maps.py
index 38737ee..71ccacb 100644
--- a/scripts/04_build_maps.py
+++ b/scripts/04_build_maps.py
@@ -80,9 +80,9 @@
 from _lib.be.region import derive_region as derive_be_region
 from _lib.bg.geometry import BGPolygonIndex
 from _lib.bg.region import derive_region as derive_bg_region
+from _lib.ch.canton import canton_name as ch_canton_name
 from _lib.ch.geometry import CHCommuneIndex, GESitgIndex
 from _lib.ch.geometry import resolve as ch_resolve_geometry
-from _lib.ch.canton import canton_name as ch_canton_name
 from _lib.ch.region import derive_region as derive_ch_region
 from _lib.cy.geometry import CYPolygonIndex
 from _lib.cy.region import derive_region as derive_cy_region
diff --git a/scripts/_lib/assets/app.js b/scripts/_lib/assets/app.js
index 4f341b3..6113f44 100644
--- a/scripts/_lib/assets/app.js
+++ b/scripts/_lib/assets/app.js
@@ -866,6 +866,24 @@
     return 'indeterminate';
   }
 
+  // A region's slug list mixes two legal tiers: appellations proper and their
+  // complementary geographic designations (FR DGC / premier-cru climat, ES
+  // subzona, IT sottozona, DE Einzellage). One combined number implies a legal
+  // precision it doesn't have — Burgundy reads 869 where the regulator
+  // recognises 84 appellations carrying 785 complementary designations.
+  // Written by both the initial paint and the filter-driven refresh, so it
+  // lives here rather than being duplicated at either call site.
+  function renderRegionCount(el, parents, subs) {
+    if (!el) return;
+    el.innerHTML = subs
+      ? `${parents}<span class="sub-count">+${subs}</span>`
+      : `${parents}`;
+    el.setAttribute('title', fmt(
+      subs ? LABELS.region_count_title : LABELS.region_count_title_flat,
+      { p: parents, s: subs },
+    ));
+  }
+
   function buildAppellationFacet() {
     const el = document.getElementById('facet-appellations');
     if (!el) return;  // defensive null-guard
@@ -882,15 +900,21 @@
         const openLbl = escapeAttr(fmt(LABELS.open_appellation_aria, { name: rec.name || slug }));
         return `<label data-slug="${safeSlug}" data-name="${escapeAttr(searchableText(rec))}"><input type="checkbox" data-key="${safeSlug}"${checked}><span class="name">${nameHtml}</span><button type="button" class="open-aoc" data-slug="${safeSlug}" aria-label="${openLbl}" title="${escapeAttr(LABELS.open_appellation_title)}">→</button></label>`;
       }).join('');
+      let parentCount = 0;
+      for (const s of slugs) if (!AOCS[s].is_sub_denomination) parentCount++;
+      const subCount = slugs.length - parentCount;
       const safeRegion = escapeAttr(region);
       // Checkbox lives outside `<summary>` (sibling of `<details>`,
       // not a descendant) so the nested-interactive-in-summary
       // accessibility warning doesn't fire. Visual layout is restored
       // via `.region-group-wrap`'s flex rule — checkbox + disclosure
       // sit in the same row.
-      html.push(`<div class="region-group-wrap" data-region="${safeRegion}"><input type="checkbox" class="region-select" data-region="${safeRegion}" aria-label="${escapeAttr(LABELS.select_all_aria)}"><details class="region-group" data-region="${safeRegion}"><summary><span class="name">${escapeHtml(label)}</span><span class="count">${slugs.length}</span></summary><div class="region-items">${items}</div></details></div>`);
+      html.push(`<div class="region-group-wrap" data-region="${safeRegion}"><input type="checkbox" class="region-select" data-region="${safeRegion}" aria-label="${escapeAttr(LABELS.select_all_aria)}"><details class="region-group" data-region="${safeRegion}"><summary><span class="name">${escapeHtml(label)}</span><span class="count" data-parents="${parentCount}" data-subs="${subCount}"></span></summary><div class="region-items">${items}</div></details></div>`);
     }
     el.innerHTML = html.join('');
+    el.querySelectorAll('.region-group > summary > .count').forEach(c => {
+      renderRegionCount(c, +c.dataset.parents, +c.dataset.subs);
+    });
     // Reapply current search visibility (so a tree rebuild during a typed
     // query keeps the filtered view).
     refreshFacetVisibility('facet-appellations', filters.q);
@@ -1349,17 +1373,23 @@
       const except = new Set(['appellations']);
       appEl.querySelectorAll('.region-group').forEach(group => {
         let visible = 0;
+        let visibleParents = 0;
         group.querySelectorAll('label').forEach(lbl => {
           const inp = lbl.querySelector('input[type=checkbox]'); if (!inp) return;
           const slug = inp.dataset.key; const rec = AOCS[slug];
           const reachable = rec ? matchesExceptFacets(rec, slug, except) : false;
           const hide = !reachable && !inp.checked;
           lbl.classList.toggle('facet-unavailable', hide);
-          if (!hide) visible++;
+          if (!hide) {
+            visible++;
+            if (!(rec && rec.is_sub_denomination)) visibleParents++;
+          }
         });
         (group.parentElement || group).classList.toggle('facet-unavailable', visible === 0);
-        const cs = group.querySelector(':scope > summary > .count');
-        if (cs) cs.textContent = String(visible);
+        renderRegionCount(
+          group.querySelector(':scope > summary > .count'),
+          visibleParents, visible - visibleParents,
+        );
       });
     }
   }
diff --git a/scripts/_lib/fr_wine_region.py b/scripts/_lib/fr_wine_region.py
index 96a9ae3..81f2369 100644
--- a/scripts/_lib/fr_wine_region.py
+++ b/scripts/_lib/fr_wine_region.py
@@ -56,6 +56,19 @@
     "roussette-du-bugey",
 )
 
+# Two BOURGOGNE-bassin appellations lie outside Burgundy proper. INAO's
+# comité régional is an administrative grouping, not a wine region:
+# Côtes du Forez sits in the upper Loire beside Côte roannaise and Côtes
+# d'Auvergne (which INAO itself files under VAL DE LOIRE), and Coteaux du
+# Lyonnais continues the Beaujolais granite south of Lyon.
+_LOIRE_SLUGS: frozenset[str] = frozenset({
+    "cotes-du-forez",
+})
+
+_LYONNAIS_SLUGS: frozenset[str] = frozenset({
+    "coteaux-du-lyonnais",
+})
+
 
 def derive_wine_region(record: dict[str, Any]) -> str:
     """Return the wine-region bucket for an FR record.
@@ -69,6 +82,10 @@ def derive_wine_region(record: dict[str, Any]) -> str:
         return bassin
     slug = record.get("slug") or ""
     target = record.get("parent_slug") or slug
+    if target in _LOIRE_SLUGS:
+        return "VAL DE LOIRE"
+    if target in _LYONNAIS_SLUGS:
+        return "BEAUJOLAIS"
     if target in _JURA_SLUGS:
         return "JURA"
     if target.startswith(_BUGEY_PREFIXES):
diff --git a/scripts/_lib/map_template.py b/scripts/_lib/map_template.py
index 812acf3..e3447ad 100644
--- a/scripts/_lib/map_template.py
+++ b/scripts/_lib/map_template.py
@@ -54,6 +54,10 @@ def build_labels(_: Callable[[str], str]) -> dict[str, str]:
         "options_h": _("Options"),
         "active_filters_aria": _("Filtres actifs"),
         "select_all_aria": _("Tout sélectionner"),
+        "region_count_title": _(
+            "{p} appellations · {s} dénominations géographiques complémentaires"
+        ),
+        "region_count_title_flat": _("{p} appellations"),
         "open_appellation_aria": _("Ouvrir la fiche de {name}"),
         "open_appellation_title": _("Ouvrir la fiche"),
         "show_spirits_label": _("Inclure les spiritueux"),
@@ -1310,6 +1314,9 @@ def _country_name(cc: str) -> str:
     "styles", "styles_simple", "classifications",
     "grapes_principal", "grapes_accessory", "grapes_all",
     "bbox", "bbox_villages", "geom_source",
+    # buildAppellationFacet splits each region's count into appellations
+    # vs complementary geographic designations.
+    "is_sub_denomination",
 })
 
 
@@ -1953,6 +1960,7 @@ def _emit(slug: str, meta: dict, ssr: str, has_card: bool) -> None:
      underline on name-hover signals the "go to this one" link affordance. */
   .facet label[data-slug] > .name:hover {{ text-decoration:underline; text-decoration-color:#a8c08a; text-underline-offset:2px }}
   .facet .count {{ color:#666; font-size:11px; margin-left:4px }}
+  .facet .count .sub-count {{ opacity:0.65; margin-left:3px }}
   .facet .syns {{ color:#888; font-size:11px; font-weight:normal }}
   /* Keyboard/SR path to open an appellation panel (the WebGL polygons aren't
      DOM-reachable). Subtle until the row is hovered or the button is focused. */