diff --git a/Dockerfile b/Dockerfile
index 34f5de9..77cf939 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,6 +5,15 @@ COPY package*.json ./
 RUN npm ci
 
 COPY . .
+
+# Brand is baked at build (Vite VITE_* are build-time). Written here, not
+# via a context .env (.dockerignore excludes .env*). public/brand-logo.svg
+# ships the Fabric-purple Hangman Lab mark; override args if rebranding.
+ARG VITE_APP_NAME=Fabric
+ARG VITE_LOGO_URL=/brand-logo.svg
+ARG VITE_FAVICON_URL=/brand-logo.svg
+RUN printf 'VITE_APP_NAME=%s\nVITE_LOGO_URL=%s\nVITE_FAVICON_URL=%s\n' \
+      "$VITE_APP_NAME" "$VITE_LOGO_URL" "$VITE_FAVICON_URL" > .env.production
 RUN npm run build
 
 FROM nginx:1.27-alpine AS runtime
diff --git a/public/brand-logo.svg b/public/brand-logo.svg
new file mode 100644
index 0000000..c6c38fd
--- /dev/null
+++ b/public/brand-logo.svg
@@ -0,0 +1,44 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 733.000000 733.000000" role="img" aria-label="Hangman Lab">
+<g transform="translate(0.000000,733.000000) scale(0.100000,-0.100000)"
+fill="#9333ea" stroke="none">
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