diff --git a/CHANGELOG.md b/CHANGELOG.md
index 20339b6..55a7452 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
 ## [Unreleased]
 
+### Added
+- **Geo headers on city/region hubs** — Cloudflare geo headers (`CF-IPCountry`, `CF-IPCity`) now used across location-based pages. Opportunity map pre-selects and auto-loads the user's country. Country overview maps highlight the user's city with a blue ring (best-effort CF-IPCity name match). `window.__GEO` JS global injected via `base.html` for client-side map code.
+
+### Fixed
+- **Opportunity map color scale** — low-score bubbles used blue (`#3B82F6`) instead of red (`#DC2626`), inconsistent with the unified `scoreColor()` scale used everywhere else. Fixed in `oppColor()`, legend, and `article-maps.js` tooltip colors. Thresholds aligned to ≥60/30/\<30.
+
 ### Changed
 - **Opportunity Score v5 → v6** — calibrates for saturated markets (Spain avg dropped from ~78 to ~50-60 range). Density ceiling lowered from 8 → 5/100k (Spain at 6-16/100k now hits zero-gap). Supply deficit weight increased from 35 → 40 pts. Addressable market reduced from 25 → 20 pts. Market validation inverted → "market headroom": high country avg maturity now reduces opportunity (saturated market = less room for new entrants).
 - **Markets page map legend** — bubble map now has a visual legend explaining size = venue count, color = Market Score. Opportunity score tooltip color unified to same green/amber/red scale (was using blue for low scores, inconsistent).
diff --git a/web/src/padelnomics/app.py b/web/src/padelnomics/app.py
index d2e64c1..9bbd640 100644
--- a/web/src/padelnomics/app.py
+++ b/web/src/padelnomics/app.py
@@ -246,6 +246,8 @@ def create_app() -> Quart:
             "csrf_token": get_csrf_token,
             "ab_variant": getattr(g, "ab_variant", None),
             "ab_tag": getattr(g, "ab_tag", None),
+            "user_country": g.get("user_country", ""),
+            "user_city": g.get("user_city", ""),
             "lang": effective_lang,
             "t": get_translations(effective_lang),
             "v": _ASSET_VERSION,
diff --git a/web/src/padelnomics/public/routes.py b/web/src/padelnomics/public/routes.py
index 476415c..7497305 100644
--- a/web/src/padelnomics/public/routes.py
+++ b/web/src/padelnomics/public/routes.py
@@ -79,12 +79,23 @@ async def opportunity_map():
     if not await is_flag_enabled("maps", default=True):
         abort(404)
     countries = await fetch_analytics("""
-        SELECT DISTINCT country_slug, country_name_en
+        SELECT DISTINCT country_slug, country_name_en, country_code
         FROM serving.location_profiles
         WHERE city_slug IS NOT NULL
         ORDER BY country_name_en
     """)
-    return await render_template("opportunity_map.html", countries=countries)
+    user_cc = g.get("user_country", "")
+    selected_slug = ""
+    if user_cc:
+        for c in countries:
+            if c["country_code"] == user_cc:
+                selected_slug = c["country_slug"]
+                break
+        countries = sorted(
+            countries,
+            key=lambda c: (0 if c["country_code"] == user_cc else 1, c["country_name_en"]),
+        )
+    return await render_template("opportunity_map.html", countries=countries, selected_slug=selected_slug)
 
 
 @bp.route("/opportunity-map/data")
diff --git a/web/src/padelnomics/public/templates/opportunity_map.html b/web/src/padelnomics/public/templates/opportunity_map.html
index a255a36..1105528 100644
--- a/web/src/padelnomics/public/templates/opportunity_map.html
+++ b/web/src/padelnomics/public/templates/opportunity_map.html
@@ -30,7 +30,7 @@
             hx-trigger="change">
       <option value="">— choose country —</option>
       {% for c in countries %}
-      <option value="{{ c.country_slug }}">{{ c.country_name_en }}</option>
+      <option value="{{ c.country_slug }}" {% if c.country_slug == selected_slug %}selected{% endif %}>{{ c.country_name_en }}</option>
       {% endfor %}
     </select>
   </div>
@@ -41,9 +41,9 @@
   <div class="mt-4 text-sm text-slate">
     <strong>Circle size:</strong> population &nbsp;|&nbsp;
     <strong>Color:</strong>
-    <span style="display:inline-block;width:10px;height:10px;border-radius:50%;background:#16A34A;vertical-align:middle;margin:0 4px"></span>High (≥70) &nbsp;
-    <span style="display:inline-block;width:10px;height:10px;border-radius:50%;background:#D97706;vertical-align:middle;margin:0 4px"></span>Mid (40–70) &nbsp;
-    <span style="display:inline-block;width:10px;height:10px;border-radius:50%;background:#3B82F6;vertical-align:middle;margin:0 4px"></span>Low (&lt;40)
+    <span style="display:inline-block;width:10px;height:10px;border-radius:50%;background:#16A34A;vertical-align:middle;margin:0 4px"></span>High (≥60) &nbsp;
+    <span style="display:inline-block;width:10px;height:10px;border-radius:50%;background:#D97706;vertical-align:middle;margin:0 4px"></span>Mid (30–60) &nbsp;
+    <span style="display:inline-block;width:10px;height:10px;border-radius:50%;background:#DC2626;vertical-align:middle;margin:0 4px"></span>Low (&lt;30)
   </div>
 </main>
 {% endblock %}
@@ -62,9 +62,9 @@
   var refLayer = L.layerGroup().addTo(map);
 
   function oppColor(score) {
-    if (score >= 70) return '#16A34A';
-    if (score >= 40) return '#D97706';
-    return '#3B82F6';
+    if (score >= 60) return '#16A34A';
+    if (score >= 30) return '#D97706';
+    return '#DC2626';
   }
 
   function makeIcon(size, color) {
@@ -133,6 +133,10 @@
   document.body.addEventListener('htmx:afterSwap', function(e) {
     if (e.detail.target.id === 'map-data') renderMap();
   });
+
+  // Auto-load if country pre-selected via geo header
+  var sel = document.getElementById('opp-country-select');
+  if (sel.value) htmx.trigger(sel, 'change');
 })();
 </script>
 {% endblock %}
diff --git a/web/src/padelnomics/static/css/input.css b/web/src/padelnomics/static/css/input.css
index f32fa83..4183c15 100644
--- a/web/src/padelnomics/static/css/input.css
+++ b/web/src/padelnomics/static/css/input.css
@@ -892,6 +892,12 @@
   transform: scale(1.1);
 }
 
+/* User's city highlight — blue ring on top of score-colored bubble */
+.pn-marker--highlight {
+  border: 3px solid #3B82F6;
+  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3), 0 2px 8px rgba(0,0,0,0.28);
+}
+
 /* Non-article city markers: faded + dashed border, no click affordance */
 .pn-marker--muted {
   opacity: 0.45;
diff --git a/web/src/padelnomics/static/js/article-maps.js b/web/src/padelnomics/static/js/article-maps.js
index d90cf8f..6e2b2b6 100644
--- a/web/src/padelnomics/static/js/article-maps.js
+++ b/web/src/padelnomics/static/js/article-maps.js
@@ -49,7 +49,7 @@
           var pop = c.population >= 1000000
             ? (c.population / 1000000).toFixed(1) + 'M'
             : (c.population >= 1000 ? Math.round(c.population / 1000) + 'K' : (c.population || ''));
-          var oppColor = c.opportunity_score >= 60 ? '#16A34A' : (c.opportunity_score >= 30 ? '#D97706' : '#3B82F6');
+          var oppColor = c.opportunity_score >= 60 ? '#16A34A' : (c.opportunity_score >= 30 ? '#D97706' : '#DC2626');
           var tip = '<strong>' + c.city_name + '</strong><br>'
             + (c.padel_venue_count || 0) + ' venues'
             + (pop ? ' · ' + pop : '')
@@ -69,6 +69,26 @@
           bounds.push([c.lat, c.lon]);
         });
         if (bounds.length) map.fitBounds(bounds, { padding: [24, 24] });
+
+        // Highlight user's city (best-effort name match via CF-IPCity)
+        var uc = (window.__GEO || {}).city || '';
+        if (uc) {
+          var match = data.find(function(c) {
+            return c.city_name && c.city_name.toLowerCase() === uc.toLowerCase();
+          });
+          if (match && match.lat && match.lon) {
+            var hSize = 10 + 36 * Math.sqrt((match.padel_venue_count || 1) / maxV);
+            var hs = Math.round(hSize);
+            var hColor = scoreColor(match.market_score);
+            var hIcon = L.divIcon({
+              className: '',
+              html: '<div class="pn-marker pn-marker--highlight" style="width:' + hs + 'px;height:' + hs + 'px;background:' + hColor + ';"></div>',
+              iconSize: [hs, hs],
+              iconAnchor: [hs / 2, hs / 2],
+            });
+            L.marker([match.lat, match.lon], { icon: hIcon }).addTo(map);
+          }
+        }
       })
       .catch(function(err) { console.error('Country map fetch failed:', err); });
   }
diff --git a/web/src/padelnomics/templates/base.html b/web/src/padelnomics/templates/base.html
index f2a066e..144f455 100644
--- a/web/src/padelnomics/templates/base.html
+++ b/web/src/padelnomics/templates/base.html
@@ -36,6 +36,7 @@
   <meta property="og:image" content="{{ url_for('static', filename='images/logo.png', _external=True) }}">
   <meta name="twitter:card" content="summary_large_image">
 
+  <script>window.__GEO = {country: "{{ user_country }}", city: "{{ user_city }}"};</script>
   {% block head %}{% endblock %}
 </head>
 <body>