diff --git a/src/client/java/su/divan2000/veila/client/render/fog/FogEnvironmentContext.java b/src/client/java/su/divan2000/veila/client/render/fog/FogEnvironmentContext.java
index cb9cedd..339848a 100644
--- a/src/client/java/su/divan2000/veila/client/render/fog/FogEnvironmentContext.java
+++ b/src/client/java/su/divan2000/veila/client/render/fog/FogEnvironmentContext.java
@@ -39,6 +39,7 @@ public final class FogEnvironmentContext {
 
         long timeOfDay = world.getTimeOfDay() % 24000L;
         long totalDays = world.getTimeOfDay() / 24000L;
+        float timeOfDayNorm = timeOfDay/24000.0F;
 
         // === 1. Трапеция для EMISSION ===
         double noiseValue = dayNoise.sample(totalDays * 0.05, 0);
@@ -73,10 +74,10 @@ public final class FogEnvironmentContext {
         double dayNoiseValue = dayNoise.sample(totalDays * 0.1, 100);
         float rawFogDayRandom = (float)(0.5 + dayNoiseValue * 0.5);
 
-        // === 4. HeightFadeMax (90 ± 10 от дневного шума) ===
-        double heightNoise = dayNoise.sample(totalDays * 0.1, 200);
-        float rawHeightFadeMax = 90.0f + (float)(heightNoise * 10.0);
-        rawHeightFadeMax = Math.max(80.0f, Math.min(100.0f, rawHeightFadeMax));
+        // === 4. HeightFadeMax (110 +15/-20 от дневного шума) ===
+        double heightNoise = dayNoise.sample(totalDays * 0.5, 200)+dayNoise.sample(timeOfDayNorm*2, totalDays)*0.25;
+        float rawHeightFadeMax = 110.0f + (float)(heightNoise * 15.0);
+        rawHeightFadeMax = Math.max(90.0f, Math.min(125.0f, rawHeightFadeMax));
 
         // === 5. Сглаживание ===
         float lerpSpeed = 0.08f;
diff --git a/src/client/resources/assets/veila/shaders/sim.frag b/src/client/resources/assets/veila/shaders/sim.frag
index 2220e7b..6475fc1 100644
--- a/src/client/resources/assets/veila/shaders/sim.frag
+++ b/src/client/resources/assets/veila/shaders/sim.frag
@@ -30,6 +30,7 @@ const float MIN_Y = -64.0;
 const float SIZE_Y = 384.0;
 
 const float UNDERGROUND_TARGET_DENSITY = 0.008;  // Подземная дымка (слабее поверхностной)
+const float UNDERGROUND_EMISSION = 1.0;
 
 float getEmission(uint magnitude, bool isAbsorber) {
     if (isAbsorber || magnitude == 0u) return 0.0;
@@ -51,8 +52,15 @@ void main() {
     float biomeHumidity = biomeParams.b;
     float biomeTimeSensitivity = biomeParams.a;
 
+    // Под землёй и в закрытых местах туман ведёт себя иначе
+    float skyLight = texture(SkyLightSampler, uv).r;
+    float skyLightSmooth = smoothstep(0.2, 0.8, skyLight);
+
     // === Emission ===
-    float finalEmission = biomeEmission * EmissionMultiplier * GlobalEmissionMultiplier;
+    float emissionTimeFactor = mix(1.0, EmissionMultiplier, biomeTimeSensitivity);
+
+    float surfaceEmission = biomeEmission * emissionTimeFactor;
+    float finalEmission = mix(UNDERGROUND_EMISSION, surfaceEmission, skyLightSmooth) * GlobalEmissionMultiplier;
 
     // === Target Density ===
     // 1. Определяем, туманный ли сегодня день
@@ -72,10 +80,6 @@ void main() {
     float worldY = uv.y * SIZE_Y + MIN_Y;
     float heightFade = 1.0 - clamp((worldY - HEIGHT_FADE_MIN) / (HeightFadeMax - HEIGHT_FADE_MIN), 0.0, 1.0);
 
-    // 4. Под землёй дымка другая
-    float skyLight = texture(SkyLightSampler, uv).r;
-    float skyLightSmooth = smoothstep(0.2, 0.8, skyLight);
-
     // 4. Итоговая плотность
     float surfaceTargetDensity = biomeTargetDensityBase * hasFogToday * timeFactor * heightFade;
     float finalTargetDensity = mix(UNDERGROUND_TARGET_DENSITY, surfaceTargetDensity, skyLightSmooth);