diff --git a/client/scripts/autoloads/fog_state.gd b/client/scripts/autoloads/fog_state.gd
index 612cf9abb..67f6ecdda 100644
--- a/client/scripts/autoloads/fog_state.gd
+++ b/client/scripts/autoloads/fog_state.gd
@@ -53,7 +53,7 @@ func _ready() -> void:
 func _resize(bounds: Rect2i) -> void:
 	var old_bounds := map_bounds
 	var old_exp := _exp_bytes
-	var old_tint := _tint_bytes
+	var old_tint := _tint_bytes  # empty on first call (_ready); guard at line 104 skips copy
 	var old_w := _width
 	var old_h := _height
 
diff --git a/docs/architecture/fog-shader-spec.md b/docs/architecture/fog-shader-spec.md
index af831f8b4..54b68af07 100644
--- a/docs/architecture/fog-shader-spec.md
+++ b/docs/architecture/fog-shader-spec.md
@@ -12,13 +12,13 @@ The fog system was simplified from the original 5-layer spec in Sprint 22 (#569)
 |----------------------|------------------|-------|
 | 1. Clear (forward cone) | Implemented | Soft Gaussian gradient (7x7, sigma 2.0) |
 | 2. Light fog (peripheral sector) | Simplified — merged into gradient | Peripheral sector removed from server; gradient provides soft transition |
-| 3. Deep fog (previously explored) | Implemented — EXP_EXPLORED | Alpha 0.54-0.70 with zone temperature tint (#563) |
+| 3. Deep fog (previously explored) | Implemented — EXP_EXPLORED | Alpha 0.55-0.70 with zone temperature tint (#563) |
 | 4. Unexplored + maps app | Deferred | v0.1.2+, requires mapped_tiles in ObserverSnapshot |
 | 5. Unexplored (no maps) | Implemented | Solid near-black #12141a |
 
 **Alpha values (Sprint 22, #563):**
-- Light fog zone (near cone gradient, vis 0.0-0.3): alpha 0.26-0.34, breathing ±0.04 (8-10s)
-- Deep fog zone (EXP_EXPLORED, vis≈0): alpha 0.54-0.70, breathing ±0.08 (15-20s)
+- Light fog zone (near cone gradient, vis 0.0-0.3): alpha 0.25-0.35, breathing ±0.05 (8-10s)
+- Deep fog zone (EXP_EXPLORED, vis≈0): alpha 0.55-0.70, breathing ±0.075 (15-20s)
 - Zone temperature tint active in deep fog zone (D-059/D-046/D-077)
 
 ## Overview
@@ -131,10 +131,10 @@ float noise_fast = texture(noise_tex, tile * 0.03 + vec2(time * 0.11, time * 0.0
 // Deep fog noise — slow cycle (15-20s), more pronounced ±0.08 breathing
 float noise_slow = texture(noise_tex, tile * 0.02 + vec2(time * 0.05, time * 0.035)).r;
 
-// Light fog: alpha 0.26-0.34 (near cone gradient)
-float light_fog_alpha = 0.30 + noise_fast * 0.04;
-// Deep fog: alpha 0.54-0.70 (far from cone, EXP_EXPLORED)
-float deep_fog_alpha = 0.62 + noise_slow * 0.08;
+// Light fog: alpha 0.25-0.35 (near cone gradient)
+float light_fog_alpha = 0.30 + (noise_fast * 2.0 - 1.0) * 0.05;
+// Deep fog: alpha 0.55-0.70 (far from cone, EXP_EXPLORED)
+float deep_fog_alpha = 0.625 + (noise_slow * 2.0 - 1.0) * 0.075;
 
 // Blend deep <-> light fog by proximity to cone:
 //   vis=0   (far from cone) → deep_factor=1 → deep fog color + alpha