diff --git a/scripts/package-boundaries.json b/scripts/package-boundaries.json
index 99ebe1d1f..c3970214a 100644
--- a/scripts/package-boundaries.json
+++ b/scripts/package-boundaries.json
@@ -386,7 +386,11 @@
     "modules": [
       "src/ui/visualInput.js",
       "src/ui/applicationShortcuts.js",
-      "src/ui/styleParameters.js"
+      "src/ui/styleParameters.js",
+      "src/i18n/index.js",
+      "src/i18n/locale.js",
+      "src/i18n/locales/es.json",
+      "src/i18n/locales/ru.json"
     ],
     "external": []
   },
@@ -407,7 +411,11 @@
       "src/styles/thermal.js",
       "src/styles/anime.js",
       "src/styles/noir.js",
-      "src/styles/snow.js"
+      "src/styles/snow.js",
+      "src/i18n/index.js",
+      "src/i18n/locale.js",
+      "src/i18n/locales/es.json",
+      "src/i18n/locales/ru.json"
     ],
     "external": ["cesium"]
   },
diff --git a/src/hudA11y.test.mjs b/src/hudA11y.test.mjs
index 920933852..0c0fd6fe2 100644
--- a/src/hudA11y.test.mjs
+++ b/src/hudA11y.test.mjs
@@ -28,6 +28,6 @@ test('the first-run checkbox keeps its native visible label', () => {
 });
 
 test('generated style sliders use the visible parameter label as their name', () => {
-  assert.match(parameters, /label\.textContent\s*=\s*metadata\.label;/);
-  assert.match(parameters, /slider\.setAttribute\(['"]aria-label['"],\s*metadata\.label\)/);
+  assert.match(parameters, /label\.textContent\s*=\s*t\(metadata\.label\);/);
+  assert.match(parameters, /slider\.setAttribute\(['"]aria-label['"],\s*t\(metadata\.label\)\)/);
 });
diff --git a/src/i18n/locales/es.json b/src/i18n/locales/es.json
index 5ccdd163b..3ee5163c1 100644
--- a/src/i18n/locales/es.json
+++ b/src/i18n/locales/es.json
@@ -859,5 +859,19 @@
   "LIVE · Roads: OpenStreetMap · Flow: TomTom · {percent}% cov · Unmatched: simulated": "EN VIVO · Vías: OpenStreetMap · Flujo: TomTom · {percent}% cob. · Sin coincidencia: simulado",
   "LIVE · Roads: OpenStreetMap · Flow: TomTom · {percent}% cov": "EN VIVO · Vías: OpenStreetMap · Flujo: TomTom · {percent}% cob.",
   "SIMULATED · Roads: OpenStreetMap · Flow: TomTom (no matches)": "SIMULADO · Vías: OpenStreetMap · Flujo: TomTom (sin coincidencias)",
-  "Data source unavailable": "Fuente de datos no disponible"
+  "Data source unavailable": "Fuente de datos no disponible",
+  "Saturation": "Saturación",
+  "Edge Thickness": "Grosor de bordes",
+  "Contrast": "Contraste",
+  "Grain": "Grano",
+  "Vignette": "Viñeta",
+  "Pixelation": "Pixelado",
+  "Distortion": "Distorsión",
+  "Instability": "Inestabilidad",
+  "Wind": "Viento",
+  "Gain": "Ganancia",
+  "Scanlines": "Líneas de barrido",
+  "Sensitivity": "Sensibilidad",
+  "WHOT/BHOT": "WHOT/BHOT",
+  "Ironbow": "Ironbow"
 }
diff --git a/src/i18n/locales/ru.json b/src/i18n/locales/ru.json
index dd1164bb8..46d99e42a 100644
--- a/src/i18n/locales/ru.json
+++ b/src/i18n/locales/ru.json
@@ -776,7 +776,7 @@
   "Feather": "Растушёвка",
   "Celestial": "Небо",
   "Clean UI": "Чистый интерфейс",
-  "Bloom": "Bloom",
+  "Bloom": "Свечение",
   "Sharpen": "Резкость",
   "Initializing photorealistic world...": "Инициализация фотореалистичного мира...",
   "NEAREST": "БЛИЖАЙШАЯ",
@@ -866,5 +866,19 @@
   "Voice model: {pendingId} — click to switch to {target}; applies next session": "Голосовая модель: {pendingId} — нажмите, чтобы переключиться на {target}; вступит в силу со следующей сессии",
   "Estimated session cost on {modelId} — {responses} response(s). Warns at {warn}, ends the session at {cap}.": "Оценочная стоимость сессии на {modelId} — ответов: {responses}. Предупреждение при {warn}, завершение сессии при {cap}.",
   "Radio did not start": "Не удалось запустить радио",
-  "Running command": "Выполнение команды"
+  "Running command": "Выполнение команды",
+  "Saturation": "Насыщенность",
+  "Edge Thickness": "Толщина контуров",
+  "Contrast": "Контраст",
+  "Grain": "Зерно",
+  "Vignette": "Виньетка",
+  "Pixelation": "Пикселизация",
+  "Distortion": "Искажение",
+  "Instability": "Нестабильность",
+  "Wind": "Ветер",
+  "Gain": "Усиление",
+  "Scanlines": "Строки развёртки",
+  "Sensitivity": "Чувствительность",
+  "WHOT/BHOT": "WHOT/BHOT",
+  "Ironbow": "Ironbow"
 }
diff --git a/src/styles/anime.js b/src/styles/anime.js
index bfe51a685..deb79c355 100644
--- a/src/styles/anime.js
+++ b/src/styles/anime.js
@@ -1,3 +1,5 @@
+import { msg } from '../i18n/index.js';
+
 /**
  * Anime / Studio Ghibli Style — Cel-shading + Saturation boost
  * Transforms the world into an animated film look
@@ -5,8 +7,8 @@
 export const animeShader = {
   name: 'anime',
   uniforms: {
-    saturation: { default: 1.0, min: 0, max: 2, label: 'Saturation' },
-    edgeThick: { default: 0.5, min: 0, max: 1, label: 'Edge Thickness' },
+    saturation: { default: 1.0, min: 0, max: 2, label: msg('Saturation') },
+    edgeThick: { default: 0.5, min: 0, max: 1, label: msg('Edge Thickness') },
   },
   fragmentShader: /* glsl */ `
     uniform sampler2D colorTexture;
diff --git a/src/styles/noir.js b/src/styles/noir.js
index ff01d58fc..5ea458859 100644
--- a/src/styles/noir.js
+++ b/src/styles/noir.js
@@ -1,3 +1,5 @@
+import { msg } from '../i18n/index.js';
+
 /**
  * Noir Style — Desaturation + High Contrast + Vignette
  * Classic film noir / detective movie look
@@ -5,9 +7,9 @@
 export const noirShader = {
   name: 'noir',
   uniforms: {
-    contrastAmt: { default: 1.2, min: 0, max: 2, label: 'Contrast' },
-    grainAmt: { default: 0.5, min: 0, max: 1, label: 'Grain' },
-    vignetteAmt: { default: 0.5, min: 0, max: 1, label: 'Vignette' },
+    contrastAmt: { default: 1.2, min: 0, max: 2, label: msg('Contrast') },
+    grainAmt: { default: 0.5, min: 0, max: 1, label: msg('Grain') },
+    vignetteAmt: { default: 0.5, min: 0, max: 1, label: msg('Vignette') },
   },
   fragmentShader: /* glsl */ `
     uniform sampler2D colorTexture;
diff --git a/src/styles/retro.js b/src/styles/retro.js
index 7ff76e1d4..396f95853 100644
--- a/src/styles/retro.js
+++ b/src/styles/retro.js
@@ -1,3 +1,5 @@
+import { msg } from '../i18n/index.js';
+
 /**
  * CRT Terminal — Dynamic CRT Monitor Aesthetic
  * Pixelation + Bayer dithering + barrel distortion + scanlines +
@@ -12,9 +14,9 @@
 export const retroShader = {
   name: 'retro',
   uniforms: {
-    pixelation: { default: 5.0, min: 1, max: 10, label: 'Pixelation' },
-    distortion: { default: 0, min: 0, max: 1, label: 'Distortion' },
-    instability: { default: 0.4, min: 0, max: 1, label: 'Instability' },
+    pixelation: { default: 5.0, min: 1, max: 10, label: msg('Pixelation') },
+    distortion: { default: 0, min: 0, max: 1, label: msg('Distortion') },
+    instability: { default: 0.4, min: 0, max: 1, label: msg('Instability') },
   },
   fragmentShader: /* glsl */ `
     uniform sampler2D colorTexture;
diff --git a/src/styles/snow.js b/src/styles/snow.js
index e2ada6ad7..f4bfebe86 100644
--- a/src/styles/snow.js
+++ b/src/styles/snow.js
@@ -1,3 +1,5 @@
+import { msg } from '../i18n/index.js';
+
 /**
  * Snow Style — White overlay + Desaturation + Falling particles
  * Transforms the world into a winter wonderland
@@ -5,8 +7,8 @@
 export const snowShader = {
   name: 'snow',
   uniforms: {
-    density: { default: 0.6, min: 0, max: 1, label: 'Density' },
-    wind: { default: 0.5, min: 0, max: 1, label: 'Wind' },
+    density: { default: 0.6, min: 0, max: 1, label: msg('Density') },
+    wind: { default: 0.5, min: 0, max: 1, label: msg('Wind') },
   },
   fragmentShader: /* glsl */ `
     uniform sampler2D colorTexture;
diff --git a/src/styles/surveillance.js b/src/styles/surveillance.js
index 8ab7eb914..e290dddcb 100644
--- a/src/styles/surveillance.js
+++ b/src/styles/surveillance.js
@@ -1,3 +1,5 @@
+import { msg } from '../i18n/index.js';
+
 /**
  * Night Vision / NVG — PVS-14 Image Intensifier Emulation
  * P43 phosphor green, intensifier tube bloom, circular vignette,
@@ -12,10 +14,10 @@
 export const nightVisionShader = {
   name: 'surveillance',
   uniforms: {
-    gain: { default: 0.55, min: 0, max: 1, label: 'Gain' },
-    bloom: { default: 0.3, min: 0, max: 1, label: 'Bloom' },
-    scanlineStr: { default: 1.0, min: 0, max: 1, label: 'Scanlines' },
-    pixelation: { default: 2.5, min: 1, max: 6, label: 'Pixelation' },
+    gain: { default: 0.55, min: 0, max: 1, label: msg('Gain') },
+    bloom: { default: 0.3, min: 0, max: 1, label: msg('Bloom') },
+    scanlineStr: { default: 1.0, min: 0, max: 1, label: msg('Scanlines') },
+    pixelation: { default: 2.5, min: 1, max: 6, label: msg('Pixelation') },
   },
   fragmentShader: /* glsl */ `
     uniform sampler2D colorTexture;
diff --git a/src/styles/thermal.js b/src/styles/thermal.js
index fe0796810..90aff5312 100644
--- a/src/styles/thermal.js
+++ b/src/styles/thermal.js
@@ -1,3 +1,5 @@
+import { msg } from '../i18n/index.js';
+
 /**
  * FLIR — Forward Looking Infrared
  * Military-grade thermal imaging with White-Hot/Black-Hot modes,
@@ -14,11 +16,11 @@
 export const thermalShader = {
   name: 'thermal',
   uniforms: {
-    sensitivity: { default: 0.75, min: 0, max: 1, label: 'Sensitivity' },
-    bloom: { default: 0.65, min: 0, max: 1, label: 'Bloom' },
-    mode: { default: 0.0, min: 0, max: 1, label: 'WHOT/BHOT' },
-    pixelation: { default: 1.5, min: 1, max: 6, label: 'Pixelation' },
-    palette: { default: 0.0, min: 0, max: 1, label: 'Ironbow' },
+    sensitivity: { default: 0.75, min: 0, max: 1, label: msg('Sensitivity') },
+    bloom: { default: 0.65, min: 0, max: 1, label: msg('Bloom') },
+    mode: { default: 0.0, min: 0, max: 1, label: msg('WHOT/BHOT') },
+    pixelation: { default: 1.5, min: 1, max: 6, label: msg('Pixelation') },
+    palette: { default: 0.0, min: 0, max: 1, label: msg('Ironbow') },
   },
   fragmentShader: /* glsl */ `
     uniform sampler2D colorTexture;
diff --git a/src/ui/styleParameters.js b/src/ui/styleParameters.js
index 6afa3e36b..9b453a69a 100644
--- a/src/ui/styleParameters.js
+++ b/src/ui/styleParameters.js
@@ -1,3 +1,5 @@
+import { t } from '../i18n/index.js';
+
 /**
  * Own generated parameter rows and their input listeners.
  * The caller supplies uniform metadata/value access and rendering/persistence
@@ -30,11 +32,11 @@ export function createStyleParameters({
         row.className = 'param-slider-row';
         const label = documentRef.createElement('span');
         label.className = 'param-label';
-        label.textContent = metadata.label;
+        label.textContent = t(metadata.label);
         const slider = documentRef.createElement('input');
         slider.type = 'range';
         slider.className = 'param-slider';
-        slider.setAttribute('aria-label', metadata.label);
+        slider.setAttribute('aria-label', t(metadata.label));
         slider.min = metadata.min;
         slider.max = metadata.max;
         slider.step = metadata.max <= 1 ? '0.01' : '0.1';