Fix reward code modal and mobile viewport dock

src/components/rpg-entry/RpgEntryHomeView.recharge.test.tsx

@@ -464,6 +464,18 @@ test('wallet ledger modal shows empty and error states', async () => {
   expect(screen.getByText('重新加载')).toBeTruthy();
 });
 
+test('opens reward code modal from profile action on mobile', async () => {
+  const user = userEvent.setup();
+
+  renderProfileView();
+  await user.click(screen.getByRole('button', { name: /兑换码/u }));
+
+  const modal = await screen.findByPlaceholderText('输入兑换码');
+  expect(modal).toBeTruthy();
+  expect(screen.getByRole('button', { name: '兑换' })).toBeTruthy();
+  expect(screen.getByLabelText('关闭兑换码')).toBeTruthy();
+});
+
 test('shows a reachable login entry in logged out mobile shell', async () => {
   const user = userEvent.setup();
   const openLoginModal = vi.fn();

src/components/rpg-entry/RpgEntryHomeView.tsx

@@ -1788,7 +1788,7 @@ function RewardCodeRedeemModal({
   onClose: () => void;
 }) {
   return (
-    <div className="platform-modal-backdrop fixed inset-0 z-50 flex items-center justify-center px-4 py-6">
+    <div className="platform-modal-backdrop fixed inset-0 z-[80] flex items-center justify-center px-4 py-6">
       <div className="platform-recharge-modal w-full max-w-sm overflow-hidden rounded-[1.4rem]">
         <div className="flex items-center justify-between border-b border-white/10 px-5 py-4">
           <div className="text-base font-black">兑换码</div>
@@ -3448,6 +3448,17 @@ export function RpgEntryHomeView({
       ) : null}
     </>
   );
+  const rewardCodeModal: ReactNode = isRewardCodeOpen ? (
+    <RewardCodeRedeemModal
+      value={rewardCodeInput}
+      isSubmitting={isSubmittingRewardCode}
+      error={rewardCodeError}
+      success={rewardCodeSuccess}
+      onChange={setRewardCodeInput}
+      onSubmit={submitRewardCode}
+      onClose={() => setIsRewardCodeOpen(false)}
+    />
+  ) : null;
 
   if (!isDesktopLayout) {
     return (
@@ -3471,10 +3482,9 @@ export function RpgEntryHomeView({
         </div>
 
         <div
-          className="mt-3 min-w-0 shrink-0 border-t pt-2"
+          className="platform-mobile-bottom-dock mt-3 min-w-0 shrink-0 border-t pt-2"
           style={{
             borderColor: 'var(--platform-line-soft)',
-            paddingBottom: 'calc(env(safe-area-inset-bottom) + 0.2rem)',
           }}
         >
           <div
@@ -3507,6 +3517,7 @@ export function RpgEntryHomeView({
             onSubmitRedeem={submitReferralInviteCode}
           />
         ) : null}
+        {rewardCodeModal}
         {isProfilePlayStatsOpen ? (
           <ProfilePlayedWorksModal
             stats={profilePlayStats}
@@ -3604,17 +3615,7 @@ export function RpgEntryHomeView({
           </div>
         </div>
       </div>
-      {isRewardCodeOpen ? (
-        <RewardCodeRedeemModal
-          value={rewardCodeInput}
-          isSubmitting={isSubmittingRewardCode}
-          error={rewardCodeError}
-          success={rewardCodeSuccess}
-          onChange={setRewardCodeInput}
-          onSubmit={submitRewardCode}
-          onClose={() => setIsRewardCodeOpen(false)}
-        />
-      ) : null}
+      {rewardCodeModal}
       {profilePopupPanel ? (
         <ProfileReferralModal
           panel={profilePopupPanel}