diff --git a/CHANGELOG.md b/CHANGELOG.md
index 86d61ed..c6fde45 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,11 @@
 
 All notable changes to **History** are listed here, newest first.
 
+## v0.10.0 — 2026-10-11 21:25
+- **Fix world map style (#2)** — made the choropleth fill fully opaque (`fill-opacity` 0.85 → 1.0) and darkened the Natural Earth terrain raster (`raster-opacity` 0.5 → 0.15), so the raster's flat water tint and fine 1:10m coastline no longer bleed through countries and compete with the borders.
+- **Strengthened country border lines** — border width 0.7 → 1.25, and the per-region stroke alphas raised (owned 0.10 → 0.30, unowned 0.06 → 0.14) so the vector borders read clearly as the dominant edge, with owned regions still more prominent than unowned ones.
+- Fixes #2.
+
 ## v0.9.0 — 2026-10-11 20:57
 - **Reduced turn latency (prompt-level):** capped `recentEvents` in the turn prompt from the last 10 to the last 5 events, and added a HARD CONSTRAINT asking the reasoning model to keep its internal analysis brief before emitting the JSON. This shortens the chain-of-thought (the 170–223s turn driver) and lowers the risk of exhausting the 4000-token output budget before the answer (the original 502 failure mode). Reasoning stays enabled (`reasoning_effort: low`); the deterministic stub, the `TurnResult` contract, `max_tokens`, and `reasoning_effort` are all unchanged.
 
diff --git a/package.json b/package.json
index 08256d5..d1a2539 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "history",
-  "version": "0.9.0",
+  "version": "0.10.0",
   "private": true,
   "type": "module",
   "description": "AI-driven alternate-history simulator — the LLM is the world engine (Pax Historia style).",
diff --git a/src/components/WorldMap.tsx b/src/components/WorldMap.tsx
index d79db52..2cabae4 100644
--- a/src/components/WorldMap.tsx
+++ b/src/components/WorldMap.tsx
@@ -61,7 +61,7 @@ const INLINE_STYLE: maplibregl.StyleSpecification = {
       type: 'raster',
       source: 'terrain',
       paint: {
-        'raster-opacity': 0.5,
+        'raster-opacity': 0.15,
         'raster-brightness-max': 0.8,
         'raster-fade-duration': 200,
       },
@@ -124,11 +124,11 @@ function applyRegions(geo: FeatureCollection, regions: RegionMap, playerNationId
       f.properties.fill = r.color;
       f.properties.owner = r.owner;
       f.properties.ownerId = r.ownerId;
-      f.properties.stroke = 'rgba(255,255,255,0.10)';
+      f.properties.stroke = 'rgba(255,255,255,0.30)';
       f.properties.isPlayer = r.ownerId === playerNationId ? 1 : 0;
     } else {
       f.properties.fill = 'rgba(148,163,184,0.05)';
-      f.properties.stroke = 'rgba(255,255,255,0.06)';
+      f.properties.stroke = 'rgba(255,255,255,0.14)';
       f.properties.owner = '';
       f.properties.ownerId = '';
       f.properties.isPlayer = 0;
@@ -411,7 +411,7 @@ export default function WorldMap({
           id: FILL_LAYER,
           type: 'fill',
           source: COUNTRIES_SOURCE,
-          paint: { 'fill-color': ['get', 'fill'], 'fill-opacity': 0.85 },
+          paint: { 'fill-color': ['get', 'fill'], 'fill-opacity': 1.0 },
         });
       }
       if (!map.getLayer(LINE_LAYER)) {
@@ -419,7 +419,7 @@ export default function WorldMap({
           id: LINE_LAYER,
           type: 'line',
           source: COUNTRIES_SOURCE,
-          paint: { 'line-color': ['get', 'stroke'], 'line-width': 0.7, 'line-opacity': 0.95 },
+          paint: { 'line-color': ['get', 'stroke'], 'line-width': 1.25, 'line-opacity': 0.95 },
         });
       }
       // NOTE: layers are added in bottom→top order (each appends on top). The