diff --git a/apps/internal-ui/src/features/help-center/HelpCenterApp.tsx b/apps/internal-ui/src/features/help-center/HelpCenterApp.tsx
index 549c3aa..9fe3ba4 100644
--- a/apps/internal-ui/src/features/help-center/HelpCenterApp.tsx
+++ b/apps/internal-ui/src/features/help-center/HelpCenterApp.tsx
@@ -64,7 +64,7 @@ export function HelpCenterApp() {
     );
   }
   if (!manifest || !themeReady) {
-    return <main className="help-boot-loading"><Loader size={44} /></main>;
+    return <main className="help-boot-loading"><Loader size={72} /></main>;
   }
   return route.articleSlug
     ? <HelpArticle manifest={manifest} articleSlug={route.articleSlug} />
diff --git a/apps/internal-ui/src/features/help-center/HelpLayout.tsx b/apps/internal-ui/src/features/help-center/HelpLayout.tsx
index 57532bb..333fc88 100644
--- a/apps/internal-ui/src/features/help-center/HelpLayout.tsx
+++ b/apps/internal-ui/src/features/help-center/HelpLayout.tsx
@@ -42,11 +42,17 @@ export function HelpLayout({
       </header>
       <main>{children}</main>
       <footer className="help-footer">
-        <a className="help-footer-brand" href={homeHref}>
-          <span className="help-brand-mark"><LogoIcon /></span>
-          <span>{portal.name}</span>
-        </a>
-        <span>{t("portals.knowledge_base_support")}</span>
+        <div className="help-footer-row">
+          <a className="help-footer-brand" href={homeHref}>
+            <span className="help-brand-mark"><LogoIcon /></span>
+            <span>{portal.name}</span>
+          </a>
+          <span>{t("portals.knowledge_base_support")}</span>
+        </div>
+        <span className="help-footer-powered">
+          {t("portals.powered_by")}{" "}
+          <a href="https://chatballs.ru" target="_blank" rel="noopener noreferrer">Chatballs</a>
+        </span>
       </footer>
       {portal.webWidgetKey && <PortalWebWidget widgetKey={portal.webWidgetKey} />}
     </div>
diff --git a/apps/internal-ui/src/features/help-center/styles-layout.css b/apps/internal-ui/src/features/help-center/styles-layout.css
index 8d2a4b1..eb4aabe 100644
--- a/apps/internal-ui/src/features/help-center/styles-layout.css
+++ b/apps/internal-ui/src/features/help-center/styles-layout.css
@@ -153,17 +153,37 @@ html.help-center-document body {
 }
 
 .help-footer {
-  display: flex;
+  display: grid;
   width: min(1024px, calc(100% - 48px));
   margin: 80px auto 0;
   padding: 34px 0 42px;
-  align-items: center;
-  justify-content: space-between;
+  gap: 18px;
   border-top: 1px solid var(--help-line-soft);
   color: var(--help-text-muted);
   font-size: 14px;
 }
 
+.help-footer-row {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+}
+
+.help-footer-powered {
+  font-size: 12px;
+  opacity: 0.8;
+}
+
+.help-footer-powered a {
+  color: inherit;
+  text-decoration: underline;
+  text-underline-offset: 2px;
+}
+
+.help-footer-powered a:hover {
+  color: var(--help-ink);
+}
+
 .help-footer-brand {
   gap: 9px;
   font-size: 16px;
@@ -256,8 +276,7 @@ html.help-center-document body {
   color: var(--help-text-muted);
 }
 
-.help-fatal,
-.help-boot-loading {
+.help-fatal {
   display: grid;
   min-height: 100vh;
   place-content: center;
diff --git a/apps/internal-ui/src/features/help-center/styles-responsive.css b/apps/internal-ui/src/features/help-center/styles-responsive.css
index 383a975..b1ce20a 100644
--- a/apps/internal-ui/src/features/help-center/styles-responsive.css
+++ b/apps/internal-ui/src/features/help-center/styles-responsive.css
@@ -115,10 +115,14 @@
   }
 
   .help-footer {
+    gap: 14px;
+    margin-top: 54px;
+  }
+
+  .help-footer-row {
     display: grid;
     justify-content: start;
     gap: 12px;
-    margin-top: 54px;
   }
 
   .help-support-launcher {
diff --git a/apps/internal-ui/src/i18n/en.ts b/apps/internal-ui/src/i18n/en.ts
index c1cc0e6..e2c8c05 100644
--- a/apps/internal-ui/src/i18n/en.ts
+++ b/apps/internal-ui/src/i18n/en.ts
@@ -905,6 +905,7 @@ export const en: Record<MessageKey, Message> = {
   "portals.invalid_yaml": "Invalid YAML",
   "portals.ip_of_installation": "{value} · this installation's IP",
   "portals.knowledge_base_support": "Knowledge base and support",
+  "portals.powered_by": "Powered by",
   "portals.language": "Language",
   "portals.language_2": "Language:",
   "portals.language_3": "LANGUAGE",
diff --git a/apps/internal-ui/src/i18n/ru.ts b/apps/internal-ui/src/i18n/ru.ts
index 64ae37f..b161a57 100644
--- a/apps/internal-ui/src/i18n/ru.ts
+++ b/apps/internal-ui/src/i18n/ru.ts
@@ -906,6 +906,7 @@ export const ru = {
   "portals.invalid_yaml": "Невалидный YAML",
   "portals.ip_of_installation": "{value} · IP этой установки",
   "portals.knowledge_base_support": "База знаний и поддержка",
+  "portals.powered_by": "Работает на",
   "portals.language": "Язык",
   "portals.language_2": "Язык:",
   "portals.language_3": "ЯЗЫК",
diff --git a/apps/internal-ui/src/layout/styles.css b/apps/internal-ui/src/layout/styles.css
index 9d25db4..e7487e2 100644
--- a/apps/internal-ui/src/layout/styles.css
+++ b/apps/internal-ui/src/layout/styles.css
@@ -266,8 +266,7 @@
 .hub-brand-mark.has-logo {
   overflow: hidden;
   color: inherit;
-  background: var(--surface-card);
-  border: 1px solid var(--n-7);
+  background: transparent;
 }
 
 .hub-brand-mark img {
diff --git a/apps/internal-ui/src/main.tsx b/apps/internal-ui/src/main.tsx
index e584dde..eeadb93 100644
--- a/apps/internal-ui/src/main.tsx
+++ b/apps/internal-ui/src/main.tsx
@@ -29,10 +29,10 @@ function SurfaceApp() {
   }, [surface]);
 
   if (surface === "loading") {
-    return <main className="help-boot-loading"><Loader size={44} /></main>;
+    return <main className="help-boot-loading"><Loader size={72} /></main>;
   }
   return surface === "help"
-    ? <Suspense fallback={<main className="help-boot-loading"><Loader size={44} /></main>}><HelpCenterApp /></Suspense>
+    ? <Suspense fallback={<main className="help-boot-loading"><Loader size={72} /></main>}><HelpCenterApp /></Suspense>
     : <App />;
 }
 
diff --git a/apps/internal-ui/src/shared/state.css b/apps/internal-ui/src/shared/state.css
index 3e1f3ea..c244080 100644
--- a/apps/internal-ui/src/shared/state.css
+++ b/apps/internal-ui/src/shared/state.css
@@ -15,3 +15,17 @@
   color: var(--n-3);
   font-size: 13px;
 }
+
+/* Загрузчик портала до прихода манифеста и темы. Живёт в общем CSS, а не в
+   чанке портала: чанк грузится лениво, и первый кадр иначе рисуется без
+   стилей. Фиксированный слой на весь экран — центр не зависит от отступов
+   и высоты документа. */
+.help-boot-loading {
+  position: fixed;
+  inset: 0;
+  display: grid;
+  place-items: center;
+  margin: 0;
+  background: var(--help-bg, var(--surface-page));
+  color: var(--help-ink, var(--text-body));
+}
diff --git a/apps/internal-ui/src/shared/ui.tsx b/apps/internal-ui/src/shared/ui.tsx
index 9854aba..18fbde0 100644
--- a/apps/internal-ui/src/shared/ui.tsx
+++ b/apps/internal-ui/src/shared/ui.tsx
@@ -108,7 +108,7 @@ export function LoadingState({ variant = "page" }: { variant?: "page" | "inline"
 }
 
 export function LoadingScreen() {
-  return <main className="state-screen"><div className="state-card"><LoadingState variant="inline" /></div></main>;
+  return <main className="state-screen"><LogoSpinner size={56} /></main>;
 }
 
 export function ErrorScreen({ retry }: { retry: () => void }) {