diff --git a/package-lock.json b/package-lock.json
index 3e2c6a1..a6e9fd3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,6 +12,7 @@
         "@uiw/react-codemirror": "^4.25.3",
         "axios": "^1.13.2",
         "chart.js": "^4.5.1",
+        "gsap": "^3.14.2",
         "i18next": "^25.7.1",
         "react": "^19.2.1",
         "react-chartjs-2": "^5.3.1",
@@ -3194,6 +3195,12 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/gsap": {
+      "version": "3.14.2",
+      "resolved": "https://registry.npmjs.org/gsap/-/gsap-3.14.2.tgz",
+      "integrity": "sha512-P8/mMxVLU7o4+55+1TCnQrPmgjPKnwkzkXOK1asnR9Jg2lna4tEY5qBJjMmAaOBDDZWtlRjBXjLa0w53G/uBLA==",
+      "license": "Standard 'no charge' license: https://gsap.com/standard-license."
+    },
     "node_modules/has-flag": {
       "version": "4.0.0",
       "dev": true,
diff --git a/package.json b/package.json
index fcdd7dd..2ce978f 100644
--- a/package.json
+++ b/package.json
@@ -16,6 +16,7 @@
     "@uiw/react-codemirror": "^4.25.3",
     "axios": "^1.13.2",
     "chart.js": "^4.5.1",
+    "gsap": "^3.14.2",
     "i18next": "^25.7.1",
     "react": "^19.2.1",
     "react-chartjs-2": "^5.3.1",
diff --git a/src/App.tsx b/src/App.tsx
index 0ceefab..14afc87 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,17 +1,6 @@
 import { useCallback, useEffect, useState } from 'react';
-import { HashRouter, Navigate, Route, Routes } from 'react-router-dom';
+import { HashRouter, Route, Routes } from 'react-router-dom';
 import { LoginPage } from '@/pages/LoginPage';
-import { DashboardPage } from '@/pages/DashboardPage';
-import { SettingsPage } from '@/pages/SettingsPage';
-import { ApiKeysPage } from '@/pages/ApiKeysPage';
-import { AiProvidersPage } from '@/pages/AiProvidersPage';
-import { AuthFilesPage } from '@/pages/AuthFilesPage';
-import { OAuthPage } from '@/pages/OAuthPage';
-import { QuotaPage } from '@/pages/QuotaPage';
-import { UsagePage } from '@/pages/UsagePage';
-import { ConfigPage } from '@/pages/ConfigPage';
-import { LogsPage } from '@/pages/LogsPage';
-import { SystemPage } from '@/pages/SystemPage';
 import { NotificationContainer } from '@/components/common/NotificationContainer';
 import { SplashScreen } from '@/components/common/SplashScreen';
 import { MainLayout } from '@/components/layout/MainLayout';
@@ -75,27 +64,13 @@ function App() {
       <Routes>
         <Route path="/login" element={<LoginPage />} />
         <Route
-          path="/"
+          path="/*"
           element={
             <ProtectedRoute>
               <MainLayout />
             </ProtectedRoute>
           }
-        >
-          <Route index element={<DashboardPage />} />
-          <Route path="dashboard" element={<DashboardPage />} />
-          <Route path="settings" element={<SettingsPage />} />
-          <Route path="api-keys" element={<ApiKeysPage />} />
-          <Route path="ai-providers" element={<AiProvidersPage />} />
-          <Route path="auth-files" element={<AuthFilesPage />} />
-          <Route path="oauth" element={<OAuthPage />} />
-          <Route path="quota" element={<QuotaPage />} />
-          <Route path="usage" element={<UsagePage />} />
-          <Route path="config" element={<ConfigPage />} />
-          <Route path="logs" element={<LogsPage />} />
-          <Route path="system" element={<SystemPage />} />
-          <Route path="*" element={<Navigate to="/" replace />} />
-        </Route>
+        />
       </Routes>
     </HashRouter>
   );
diff --git a/src/components/common/PageTransition.scss b/src/components/common/PageTransition.scss
new file mode 100644
index 0000000..937f438
--- /dev/null
+++ b/src/components/common/PageTransition.scss
@@ -0,0 +1,34 @@
+@use '@/styles/variables.scss' as *;
+
+.page-transition {
+  position: relative;
+  flex: 1 1 auto;
+  display: flex;
+  flex-direction: column;
+  min-height: 0;
+  overflow: hidden;
+
+  &__layer {
+    display: flex;
+    flex-direction: column;
+    gap: $spacing-lg;
+    min-height: 0;
+    flex: 1;
+    will-change: transform, opacity;
+
+    // During animation, exit layer uses absolute positioning
+    &--exit {
+      position: absolute;
+      inset: 0;
+      z-index: 1;
+      overflow: hidden;
+      pointer-events: none;
+    }
+  }
+
+  // When both layers exist, current layer also needs positioning
+  &--animating &__layer:not(&__layer--exit) {
+    position: relative;
+    z-index: 0;
+  }
+}
diff --git a/src/components/common/PageTransition.tsx b/src/components/common/PageTransition.tsx
new file mode 100644
index 0000000..aa614bf
--- /dev/null
+++ b/src/components/common/PageTransition.tsx
@@ -0,0 +1,159 @@
+import { ReactNode, useCallback, useEffect, useLayoutEffect, useRef, useState } from 'react';
+import { useLocation, type Location } from 'react-router-dom';
+import gsap from 'gsap';
+import './PageTransition.scss';
+
+interface PageTransitionProps {
+  render: (location: Location) => ReactNode;
+  getRouteOrder?: (pathname: string) => number | null;
+  scrollContainerRef?: React.RefObject<HTMLElement | null>;
+}
+
+const TRANSITION_DURATION = 0.65;
+
+type LayerStatus = 'current' | 'exiting';
+
+type Layer = {
+  key: string;
+  location: Location;
+  status: LayerStatus;
+};
+
+type TransitionDirection = 'forward' | 'backward';
+
+export function PageTransition({
+  render,
+  getRouteOrder,
+  scrollContainerRef,
+}: PageTransitionProps) {
+  const location = useLocation();
+  const currentLayerRef = useRef<HTMLDivElement>(null);
+  const exitingLayerRef = useRef<HTMLDivElement>(null);
+  const exitScrollOffsetRef = useRef(0);
+
+  const [isAnimating, setIsAnimating] = useState(false);
+  const [transitionDirection, setTransitionDirection] = useState<TransitionDirection>('forward');
+  const [layers, setLayers] = useState<Layer[]>(() => [
+    {
+      key: location.key,
+      location,
+      status: 'current',
+    },
+  ]);
+  const currentLayerKey = layers[layers.length - 1]?.key ?? location.key;
+  const currentLayerPathname = layers[layers.length - 1]?.location.pathname;
+
+  const resolveScrollContainer = useCallback(() => {
+    if (scrollContainerRef?.current) return scrollContainerRef.current;
+    if (typeof document === 'undefined') return null;
+    return document.scrollingElement as HTMLElement | null;
+  }, [scrollContainerRef]);
+
+  useEffect(() => {
+    if (isAnimating) return;
+    if (location.key === currentLayerKey) return;
+    const scrollContainer = resolveScrollContainer();
+    exitScrollOffsetRef.current = scrollContainer?.scrollTop ?? 0;
+    const resolveOrderIndex = (pathname?: string) => {
+      if (!getRouteOrder || !pathname) return null;
+      const index = getRouteOrder(pathname);
+      return typeof index === 'number' && index >= 0 ? index : null;
+    };
+    const fromIndex = resolveOrderIndex(currentLayerPathname);
+    const toIndex = resolveOrderIndex(location.pathname);
+    const nextDirection: TransitionDirection =
+      fromIndex === null || toIndex === null || fromIndex === toIndex
+        ? 'forward'
+        : toIndex > fromIndex
+          ? 'forward'
+          : 'backward';
+    setTransitionDirection(nextDirection);
+    setLayers((prev) => {
+      const prevCurrent = prev[prev.length - 1];
+      return [
+        prevCurrent
+          ? { ...prevCurrent, status: 'exiting' }
+          : { key: location.key, location, status: 'exiting' },
+        { key: location.key, location, status: 'current' },
+      ];
+    });
+    setIsAnimating(true);
+  }, [
+    isAnimating,
+    location,
+    currentLayerKey,
+    currentLayerPathname,
+    getRouteOrder,
+    resolveScrollContainer,
+  ]);
+
+  // Run GSAP animation when animating starts
+  useLayoutEffect(() => {
+    if (!isAnimating) return;
+
+    if (!currentLayerRef.current) return;
+
+    const scrollContainer = resolveScrollContainer();
+    const scrollOffset = exitScrollOffsetRef.current;
+    if (scrollContainer && scrollOffset > 0) {
+      scrollContainer.scrollTo({ top: 0, left: 0, behavior: 'auto' });
+    }
+
+    const tl = gsap.timeline({
+      onComplete: () => {
+        setLayers((prev) => prev.filter((layer) => layer.status !== 'exiting'));
+        setIsAnimating(false);
+      },
+    });
+
+    // Exit animation: fly out to top (slow-to-fast)
+    if (exitingLayerRef.current) {
+      gsap.set(exitingLayerRef.current, { y: scrollOffset ? -scrollOffset : 0 });
+      tl.fromTo(
+        exitingLayerRef.current,
+        { yPercent: 0, opacity: 1 },
+        {
+          yPercent: transitionDirection === 'forward' ? -100 : 100,
+          opacity: 0,
+          duration: TRANSITION_DURATION,
+          ease: 'power3.in', // slow start, fast end
+        },
+        0
+      );
+    }
+
+    // Enter animation: slide in from bottom (slow-to-fast)
+    tl.fromTo(
+      currentLayerRef.current,
+      { yPercent: transitionDirection === 'forward' ? 100 : -100, opacity: 0 },
+      {
+        yPercent: 0,
+        opacity: 1,
+        duration: TRANSITION_DURATION,
+        ease: 'power2.in', // slow start, fast end
+      },
+      0
+    );
+
+    return () => {
+      tl.kill();
+      gsap.killTweensOf([currentLayerRef.current, exitingLayerRef.current]);
+    };
+  }, [isAnimating, transitionDirection, resolveScrollContainer]);
+
+  return (
+    <div className={`page-transition${isAnimating ? ' page-transition--animating' : ''}`}>
+      {layers.map((layer) => (
+        <div
+          key={layer.key}
+          className={`page-transition__layer${
+            layer.status === 'exiting' ? ' page-transition__layer--exit' : ''
+          }`}
+          ref={layer.status === 'exiting' ? exitingLayerRef : currentLayerRef}
+        >
+          {render(layer.location)}
+        </div>
+      ))}
+    </div>
+  );
+}
diff --git a/src/components/layout/MainLayout.tsx b/src/components/layout/MainLayout.tsx
index d1305a6..1a3b8bf 100644
--- a/src/components/layout/MainLayout.tsx
+++ b/src/components/layout/MainLayout.tsx
@@ -7,11 +7,13 @@ import {
   useRef,
   useState,
 } from 'react';
-import { NavLink, Outlet, useLocation } from 'react-router-dom';
+import { NavLink, useLocation } from 'react-router-dom';
 import { useTranslation } from 'react-i18next';
 import { Button } from '@/components/ui/Button';
 import { Modal } from '@/components/ui/Modal';
 import { ToggleSwitch } from '@/components/ui/ToggleSwitch';
+import { PageTransition } from '@/components/common/PageTransition';
+import { MainRoutes } from '@/router/MainRoutes';
 import {
   IconBot,
   IconChartLine,
@@ -200,6 +202,7 @@ export function MainLayout() {
   const [requestLogDraft, setRequestLogDraft] = useState(false);
   const [requestLogTouched, setRequestLogTouched] = useState(false);
   const [requestLogSaving, setRequestLogSaving] = useState(false);
+  const contentRef = useRef<HTMLDivElement | null>(null);
   const brandCollapseTimer = useRef<ReturnType<typeof setTimeout> | null>(null);
   const headerRef = useRef<HTMLElement | null>(null);
   const versionTapCount = useRef(0);
@@ -341,6 +344,7 @@ export function MainLayout() {
     });
   }, [fetchConfig]);
 
+
   const statusClass =
     connectionStatus === 'connected'
       ? 'success'
@@ -365,6 +369,18 @@ export function MainLayout() {
       : []),
     { path: '/system', label: t('nav.system_info'), icon: sidebarIcons.system },
   ];
+  const navOrder = navItems.map((item) => item.path);
+  const getRouteOrder = (pathname: string) => {
+    const trimmedPath =
+      pathname.length > 1 && pathname.endsWith('/') ? pathname.slice(0, -1) : pathname;
+    const normalizedPath = trimmedPath === '/dashboard' ? '/' : trimmedPath;
+    const exactIndex = navOrder.indexOf(normalizedPath);
+    if (exactIndex !== -1) return exactIndex;
+    const nestedIndex = navOrder.findIndex(
+      (path) => path !== '/' && normalizedPath.startsWith(`${path}/`)
+    );
+    return nestedIndex === -1 ? null : nestedIndex;
+  };
 
   const handleRefreshAll = async () => {
     clearCache();
@@ -508,9 +524,13 @@ export function MainLayout() {
           </div>
         </aside>
 
-        <div className={`content${isLogsPage ? ' content-logs' : ''}`}>
+        <div className={`content${isLogsPage ? ' content-logs' : ''}`} ref={contentRef}>
           <main className={`main-content${isLogsPage ? ' main-content-logs' : ''}`}>
-            <Outlet />
+            <PageTransition
+              render={(location) => <MainRoutes location={location} />}
+              getRouteOrder={getRouteOrder}
+              scrollContainerRef={contentRef}
+            />
           </main>
 
           <footer className="footer">
diff --git a/src/components/ui/Modal.tsx b/src/components/ui/Modal.tsx
index e9c7b4e..97d7a75 100644
--- a/src/components/ui/Modal.tsx
+++ b/src/components/ui/Modal.tsx
@@ -1,4 +1,5 @@
 import { useState, useEffect, useCallback, useRef, type PropsWithChildren, type ReactNode } from 'react';
+import { createPortal } from 'react-dom';
 import { IconX } from './icons';
 
 interface ModalProps {
@@ -10,6 +11,26 @@ interface ModalProps {
 }
 
 const CLOSE_ANIMATION_DURATION = 350;
+const MODAL_LOCK_CLASS = 'modal-open';
+let activeModalCount = 0;
+
+const lockScroll = () => {
+  if (typeof document === 'undefined') return;
+  if (activeModalCount === 0) {
+    document.body?.classList.add(MODAL_LOCK_CLASS);
+    document.documentElement?.classList.add(MODAL_LOCK_CLASS);
+  }
+  activeModalCount += 1;
+};
+
+const unlockScroll = () => {
+  if (typeof document === 'undefined') return;
+  activeModalCount = Math.max(0, activeModalCount - 1);
+  if (activeModalCount === 0) {
+    document.body?.classList.remove(MODAL_LOCK_CLASS);
+    document.documentElement?.classList.remove(MODAL_LOCK_CLASS);
+  }
+};
 
 export function Modal({ open, title, onClose, footer, width = 520, children }: PropsWithChildren<ModalProps>) {
   const [isVisible, setIsVisible] = useState(false);
@@ -60,12 +81,20 @@ export function Modal({ open, title, onClose, footer, width = 520, children }: P
     };
   }, []);
 
+  const shouldLockScroll = open || isVisible;
+
+  useEffect(() => {
+    if (!shouldLockScroll) return;
+    lockScroll();
+    return () => unlockScroll();
+  }, [shouldLockScroll]);
+
   if (!open && !isVisible) return null;
 
   const overlayClass = `modal-overlay ${isClosing ? 'modal-overlay-closing' : 'modal-overlay-entering'}`;
   const modalClass = `modal ${isClosing ? 'modal-closing' : 'modal-entering'}`;
 
-  return (
+  const modalContent = (
     <div className={overlayClass}>
       <div className={modalClass} style={{ width }} role="dialog" aria-modal="true">
         <button className="modal-close-floating" onClick={handleClose} aria-label="Close">
@@ -79,4 +108,10 @@ export function Modal({ open, title, onClose, footer, width = 520, children }: P
       </div>
     </div>
   );
+
+  if (typeof document === 'undefined') {
+    return modalContent;
+  }
+
+  return createPortal(modalContent, document.body);
 }
diff --git a/src/pages/AiProvidersPage.tsx b/src/pages/AiProvidersPage.tsx
index bdb5202..2c9e717 100644
--- a/src/pages/AiProvidersPage.tsx
+++ b/src/pages/AiProvidersPage.tsx
@@ -202,7 +202,7 @@ const buildAmpcodeFormState = (ampcode?: AmpcodeConfig | null): AmpcodeFormState
 export function AiProvidersPage() {
   const { t } = useTranslation();
   const { showNotification } = useNotificationStore();
-  const { theme } = useThemeStore();
+  const resolvedTheme = useThemeStore((state) => state.resolvedTheme);
   const connectionStatus = useAuthStore((state) => state.connectionStatus);
 
   const config = useConfigStore((state) => state.config);
@@ -1221,7 +1221,6 @@ export function AiProvidersPage() {
     renderContent: (item: T, index: number) => ReactNode,
     onEdit: (index: number) => void,
     onDelete: (item: T) => void,
-    addLabel: string,
     emptyTitle: string,
     emptyDescription: string,
     deleteLabel?: string,
@@ -1239,11 +1238,6 @@ export function AiProvidersPage() {
         <EmptyState
           title={emptyTitle}
           description={emptyDescription}
-          action={
-            <Button onClick={() => onEdit(-1)} disabled={disableControls}>
-              {addLabel}
-            </Button>
-          }
         />
       );
     }
@@ -1388,7 +1382,6 @@ export function AiProvidersPage() {
             },
             (index) => openGeminiModal(index),
             (item) => deleteGemini(item.apiKey),
-            t('ai_providers.gemini_add_button'),
             t('ai_providers.gemini_empty_title'),
             t('ai_providers.gemini_empty_desc'),
             undefined,
@@ -1409,7 +1402,11 @@ export function AiProvidersPage() {
         <Card
           title={
             <span className={styles.cardTitle}>
-              <img src={theme === 'dark' ? iconOpenaiDark : iconOpenaiLight} alt="" className={styles.cardTitleIcon} />
+              <img
+                src={resolvedTheme === 'dark' ? iconOpenaiDark : iconOpenaiLight}
+                alt=""
+                className={styles.cardTitleIcon}
+              />
               {t('ai_providers.codex_title')}
             </span>
           }
@@ -1508,7 +1505,6 @@ export function AiProvidersPage() {
             },
             (index) => openProviderModal('codex', index),
             (item) => deleteProviderEntry('codex', item.apiKey),
-            t('ai_providers.codex_add_button'),
             t('ai_providers.codex_empty_title'),
             t('ai_providers.codex_empty_desc'),
             undefined,
@@ -1644,7 +1640,6 @@ export function AiProvidersPage() {
             },
             (index) => openProviderModal('claude', index),
             (item) => deleteProviderEntry('claude', item.apiKey),
-            t('ai_providers.claude_add_button'),
             t('ai_providers.claude_empty_title'),
             t('ai_providers.claude_empty_desc'),
             undefined,
@@ -1743,7 +1738,11 @@ export function AiProvidersPage() {
         <Card
           title={
             <span className={styles.cardTitle}>
-              <img src={theme === 'dark' ? iconOpenaiDark : iconOpenaiLight} alt="" className={styles.cardTitleIcon} />
+              <img
+                src={resolvedTheme === 'dark' ? iconOpenaiDark : iconOpenaiLight}
+                alt=""
+                className={styles.cardTitleIcon}
+              />
               {t('ai_providers.openai_title')}
             </span>
           }
@@ -1867,7 +1866,6 @@ export function AiProvidersPage() {
             },
             (index) => openOpenaiModal(index),
             (item) => deleteOpenai(item.name),
-            t('ai_providers.openai_add_button'),
             t('ai_providers.openai_empty_title'),
             t('ai_providers.openai_empty_desc')
           )}
diff --git a/src/pages/OAuthPage.tsx b/src/pages/OAuthPage.tsx
index 9e35a58..557884b 100644
--- a/src/pages/OAuthPage.tsx
+++ b/src/pages/OAuthPage.tsx
@@ -59,11 +59,10 @@ const PROVIDERS: { id: OAuthProvider; titleKey: string; hintKey: string; urlLabe
   { id: 'anthropic', titleKey: 'auth_login.anthropic_oauth_title', hintKey: 'auth_login.anthropic_oauth_hint', urlLabelKey: 'auth_login.anthropic_oauth_url_label', icon: iconClaude },
   { id: 'antigravity', titleKey: 'auth_login.antigravity_oauth_title', hintKey: 'auth_login.antigravity_oauth_hint', urlLabelKey: 'auth_login.antigravity_oauth_url_label', icon: iconAntigravity },
   { id: 'gemini-cli', titleKey: 'auth_login.gemini_cli_oauth_title', hintKey: 'auth_login.gemini_cli_oauth_hint', urlLabelKey: 'auth_login.gemini_cli_oauth_url_label', icon: iconGemini },
-  { id: 'qwen', titleKey: 'auth_login.qwen_oauth_title', hintKey: 'auth_login.qwen_oauth_hint', urlLabelKey: 'auth_login.qwen_oauth_url_label', icon: iconQwen },
-  { id: 'iflow', titleKey: 'auth_login.iflow_oauth_title', hintKey: 'auth_login.iflow_oauth_hint', urlLabelKey: 'auth_login.iflow_oauth_url_label', icon: iconIflow }
+  { id: 'qwen', titleKey: 'auth_login.qwen_oauth_title', hintKey: 'auth_login.qwen_oauth_hint', urlLabelKey: 'auth_login.qwen_oauth_url_label', icon: iconQwen }
 ];
 
-const CALLBACK_SUPPORTED: OAuthProvider[] = ['codex', 'anthropic', 'antigravity', 'gemini-cli', 'iflow'];
+const CALLBACK_SUPPORTED: OAuthProvider[] = ['codex', 'anthropic', 'antigravity', 'gemini-cli'];
 const getProviderI18nPrefix = (provider: OAuthProvider) => provider.replace('-', '_');
 const getAuthKey = (provider: OAuthProvider, suffix: string) =>
   `auth_login.${getProviderI18nPrefix(provider)}_${suffix}`;
diff --git a/src/pages/QuotaPage.tsx b/src/pages/QuotaPage.tsx
index 116d07f..523f3b6 100644
--- a/src/pages/QuotaPage.tsx
+++ b/src/pages/QuotaPage.tsx
@@ -1031,7 +1031,7 @@ export function QuotaPage() {
       const windows: CodexQuotaWindow[] = [];
       const addWindow = (
         id: string,
-        label: string,
+        labelKey: string,
         window?: CodexUsageWindow | null,
         limitReached?: boolean,
         allowed?: boolean
@@ -1044,7 +1044,8 @@ export function QuotaPage() {
           usedPercentRaw ?? (isLimitReached && resetLabel !== '-' ? 100 : null);
         windows.push({
           id,
-          label,
+          label: t(labelKey),
+          labelKey,
           usedPercent,
           resetLabel
         });
@@ -1052,21 +1053,21 @@ export function QuotaPage() {
 
       addWindow(
         'primary',
-        t('codex_quota.primary_window'),
+        'codex_quota.primary_window',
         rateLimit?.primary_window ?? rateLimit?.primaryWindow,
         rateLimit?.limit_reached ?? rateLimit?.limitReached,
         rateLimit?.allowed
       );
       addWindow(
         'secondary',
-        t('codex_quota.secondary_window'),
+        'codex_quota.secondary_window',
         rateLimit?.secondary_window ?? rateLimit?.secondaryWindow,
         rateLimit?.limit_reached ?? rateLimit?.limitReached,
         rateLimit?.allowed
       );
       addWindow(
         'code-review',
-        t('codex_quota.code_review_window'),
+        'codex_quota.code_review_window',
         codeReviewLimit?.primary_window ?? codeReviewLimit?.primaryWindow,
         codeReviewLimit?.limit_reached ?? codeReviewLimit?.limitReached,
         codeReviewLimit?.allowed
@@ -1552,10 +1553,12 @@ export function QuotaPage() {
                           ? styles.quotaBarFillMedium
                           : styles.quotaBarFillLow;
 
+                  const windowLabel = window.labelKey ? t(window.labelKey) : window.label;
+
                   return (
                     <div key={window.id} className={styles.quotaRow}>
                       <div className={styles.quotaRowHeader}>
-                        <span className={styles.quotaModel}>{window.label}</span>
+                        <span className={styles.quotaModel}>{windowLabel}</span>
                         <div className={styles.quotaMeta}>
                           <span className={styles.quotaPercent}>{percentLabel}</span>
                           <span className={styles.quotaReset}>{window.resetLabel}</span>
diff --git a/src/router/MainRoutes.tsx b/src/router/MainRoutes.tsx
new file mode 100644
index 0000000..ee01d80
--- /dev/null
+++ b/src/router/MainRoutes.tsx
@@ -0,0 +1,32 @@
+import { Navigate, useRoutes, type Location } from 'react-router-dom';
+import { DashboardPage } from '@/pages/DashboardPage';
+import { SettingsPage } from '@/pages/SettingsPage';
+import { ApiKeysPage } from '@/pages/ApiKeysPage';
+import { AiProvidersPage } from '@/pages/AiProvidersPage';
+import { AuthFilesPage } from '@/pages/AuthFilesPage';
+import { OAuthPage } from '@/pages/OAuthPage';
+import { QuotaPage } from '@/pages/QuotaPage';
+import { UsagePage } from '@/pages/UsagePage';
+import { ConfigPage } from '@/pages/ConfigPage';
+import { LogsPage } from '@/pages/LogsPage';
+import { SystemPage } from '@/pages/SystemPage';
+
+const mainRoutes = [
+  { path: '/', element: <DashboardPage /> },
+  { path: '/dashboard', element: <DashboardPage /> },
+  { path: '/settings', element: <SettingsPage /> },
+  { path: '/api-keys', element: <ApiKeysPage /> },
+  { path: '/ai-providers', element: <AiProvidersPage /> },
+  { path: '/auth-files', element: <AuthFilesPage /> },
+  { path: '/oauth', element: <OAuthPage /> },
+  { path: '/quota', element: <QuotaPage /> },
+  { path: '/usage', element: <UsagePage /> },
+  { path: '/config', element: <ConfigPage /> },
+  { path: '/logs', element: <LogsPage /> },
+  { path: '/system', element: <SystemPage /> },
+  { path: '*', element: <Navigate to="/" replace /> },
+];
+
+export function MainRoutes({ location }: { location?: Location }) {
+  return useRoutes(mainRoutes, location);
+}
diff --git a/src/services/api/oauth.ts b/src/services/api/oauth.ts
index 5e48472..456aafd 100644
--- a/src/services/api/oauth.ts
+++ b/src/services/api/oauth.ts
@@ -9,8 +9,7 @@ export type OAuthProvider =
   | 'anthropic'
   | 'antigravity'
   | 'gemini-cli'
-  | 'qwen'
-  | 'iflow';
+  | 'qwen';
 
 export interface OAuthStartResponse {
   url: string;
@@ -30,7 +29,7 @@ export interface IFlowCookieAuthResponse {
   type?: string;
 }
 
-const WEBUI_SUPPORTED: OAuthProvider[] = ['codex', 'anthropic', 'antigravity', 'gemini-cli', 'iflow'];
+const WEBUI_SUPPORTED: OAuthProvider[] = ['codex', 'anthropic', 'antigravity', 'gemini-cli'];
 const CALLBACK_PROVIDER_MAP: Partial<Record<OAuthProvider, string>> = {
   'gemini-cli': 'gemini'
 };
diff --git a/src/styles/global.scss b/src/styles/global.scss
index 3eb2ce7..14ed595 100644
--- a/src/styles/global.scss
+++ b/src/styles/global.scss
@@ -15,6 +15,15 @@ body {
   transition: background-color $transition-normal, color $transition-normal;
 }
 
+html.modal-open,
+body.modal-open {
+  overflow: hidden;
+}
+
+body.modal-open .content {
+  overflow: hidden;
+}
+
 // 滚动条样式
 ::-webkit-scrollbar {
   width: 8px;
diff --git a/src/styles/layout.scss b/src/styles/layout.scss
index c9a7710..bb452ba 100644
--- a/src/styles/layout.scss
+++ b/src/styles/layout.scss
@@ -348,6 +348,7 @@
   flex-direction: column;
   min-width: 0;
   overflow-y: auto;
+  scrollbar-gutter: stable;
   height: 100%;
 
   &.content-logs {
diff --git a/src/types/oauth.ts b/src/types/oauth.ts
index 35892b2..edcc95f 100644
--- a/src/types/oauth.ts
+++ b/src/types/oauth.ts
@@ -9,8 +9,7 @@ export type OAuthProvider =
   | 'anthropic'
   | 'antigravity'
   | 'gemini-cli'
-  | 'qwen'
-  | 'iflow';
+  | 'qwen';
 
 // OAuth 流程状态
 export interface OAuthFlow {
diff --git a/src/types/quota.ts b/src/types/quota.ts
index 14a8deb..ac32a50 100644
--- a/src/types/quota.ts
+++ b/src/types/quota.ts
@@ -37,6 +37,7 @@ export interface GeminiCliQuotaState {
 export interface CodexQuotaWindow {
   id: string;
   label: string;
+  labelKey?: string;
   usedPercent: number | null;
   resetLabel: string;
 }
diff --git a/src/utils/constants.ts b/src/utils/constants.ts
index ef2594c..eb1b650 100644
--- a/src/utils/constants.ts
+++ b/src/utils/constants.ts
@@ -42,16 +42,14 @@ export const OAUTH_CARD_IDS = [
   'anthropic-oauth-card',
   'antigravity-oauth-card',
   'gemini-cli-oauth-card',
-  'qwen-oauth-card',
-  'iflow-oauth-card'
+  'qwen-oauth-card'
 ];
 export const OAUTH_PROVIDERS = {
   CODEX: 'codex',
   ANTHROPIC: 'anthropic',
   ANTIGRAVITY: 'antigravity',
   GEMINI_CLI: 'gemini-cli',
-  QWEN: 'qwen',
-  IFLOW: 'iflow'
+  QWEN: 'qwen'
 } as const;
 
 // API 端点