diff --git a/src/components/pro/UpgradeView.tsx b/src/components/pro/UpgradeView.tsx
index 5ece996..4cb7781 100644
--- a/src/components/pro/UpgradeView.tsx
+++ b/src/components/pro/UpgradeView.tsx
@@ -4,18 +4,8 @@
 
 import { useCallback, useEffect, useState } from 'react'
 import { useTranslation } from 'react-i18next'
-import {
-  Check,
-  Crown,
-  ExternalLink,
-  Loader2,
-  Shield,
-} from 'lucide-react'
-import {
-  proFeatureLabel,
-  useEntitlementStore,
-  type ProFeature,
-} from '../../stores/entitlementStore'
+import { Check, Crown, ExternalLink, Loader2, Shield } from 'lucide-react'
+import { proFeatureLabel, useEntitlementStore, type ProFeature } from '../../stores/entitlementStore'
 import { checkout as licenseCheckout } from '../../platform/licenseApi'
 import { createLogger } from '../../utils/logger'
 
@@ -38,10 +28,7 @@ function looksLikeValidLicenseKey(value: string): boolean {
   return trimmed.startsWith('LIC-') || trimmed.startsWith('LICOFF-') || trimmed.length >= 8
 }
 
-function activatedLabel(
-  t: (key: string) => string,
-  planType: string | null
-): string {
+function activatedLabel(t: (key: string) => string, planType: string | null): string {
   switch (planType) {
     case 'yearly':
       return t('pro.activatedYearly')
@@ -97,38 +84,39 @@ export default function UpgradeView({ feature, comingSoon }: UpgradeViewProps) {
 
   const highlight = feature ? proFeatureLabel(feature) : null
 
-  const startCheckout = useCallback(async (planChoice: 'yearly' | 'perpetual') => {
-    setSelectedPlan(planChoice)
-    setCheckoutLoading(true)
-    setCheckoutError(null)
-    const trimmedEmail = emailInput.trim()
-    if (!trimmedEmail || !trimmedEmail.includes('@')) {
-      setCheckoutError(t('pro.emailRequired'))
-      setCheckoutLoading(false)
-      return
-    }
-    try {
-      await setEmail(trimmedEmail)
-      const id =
-        deviceId ||
-        (await window.opsxApi.licenseDeviceId().catch(() => ''))
-      const result = await licenseCheckout({
-        customerEmail: trimmedEmail,
-        deviceId: id,
-        planType: planChoice,
-      })
-      if (!result.checkoutUrl) {
-        throw new Error(t('pro.checkoutUnavailable', { status: 'no-url' }))
+  const startCheckout = useCallback(
+    async (planChoice: 'yearly' | 'perpetual') => {
+      setSelectedPlan(planChoice)
+      setCheckoutLoading(true)
+      setCheckoutError(null)
+      const trimmedEmail = emailInput.trim()
+      if (!trimmedEmail || !trimmedEmail.includes('@')) {
+        setCheckoutError(t('pro.emailRequired'))
+        setCheckoutLoading(false)
+        return
       }
-      await window.opsxApi.openExternal(result.checkoutUrl)
-    } catch (error) {
-      const message = error instanceof Error ? error.message : String(error)
-      logger.warn('checkout failed', message)
-      setCheckoutError(message)
-    } finally {
-      setCheckoutLoading(false)
-    }
-  }, [deviceId, emailInput, setEmail, t])
+      try {
+        await setEmail(trimmedEmail)
+        const id = deviceId || (await window.opsxApi.licenseDeviceId().catch(() => ''))
+        const result = await licenseCheckout({
+          customerEmail: trimmedEmail,
+          deviceId: id,
+          planType: planChoice,
+        })
+        if (!result.checkoutUrl) {
+          throw new Error(t('pro.checkoutUnavailable', { status: 'no-url' }))
+        }
+        await window.opsxApi.openExternal(result.checkoutUrl)
+      } catch (error) {
+        const message = error instanceof Error ? error.message : String(error)
+        logger.warn('checkout failed', message)
+        setCheckoutError(message)
+      } finally {
+        setCheckoutLoading(false)
+      }
+    },
+    [deviceId, emailInput, setEmail, t]
+  )
 
   const handleActivate = useCallback(async () => {
     setActivateError(null)
@@ -162,14 +150,12 @@ export default function UpgradeView({ feature, comingSoon }: UpgradeViewProps) {
   return (
     <div className="flex h-full flex-col overflow-y-auto bg-dark-900">
       <div className="mx-auto w-full max-w-3xl px-6 py-8">
-        <header className="mb-8 flex items-start gap-3 border-b border-dark-700/40 pb-6">
+        <header className="border-dark-700/40 mb-8 flex items-start gap-3 border-b pb-6">
           <div className="flex h-11 w-11 items-center justify-center rounded-xl bg-accent-blue/20 text-accent-blue">
             <Crown className="h-5 w-5" />
           </div>
           <div className="min-w-0 flex-1">
-            <h1 className="text-lg font-semibold tracking-tight text-content-primary">
-              {t('pro.title')}
-            </h1>
+            <h1 className="text-lg font-semibold tracking-tight text-content-primary">{t('pro.title')}</h1>
             <p className="mt-1 text-sm text-txt-muted">
               {comingSoon && highlight
                 ? t('pro.subtitleComingSoon', { feature: highlight })
@@ -189,7 +175,7 @@ export default function UpgradeView({ feature, comingSoon }: UpgradeViewProps) {
                     ? t('pro.expiresAt', { date: new Date(expiresAt * 1000).toLocaleDateString() })
                     : t('pro.lifetime')
                   : null}
-                {plan === 'pro' && maxDevices
+                {plan === 'pro' && maxDevices && maxDevices > 1
                   ? ` · ${t('pro.devices', { count: maxDevices })}`
                   : null}
               </p>
@@ -213,23 +199,15 @@ export default function UpgradeView({ feature, comingSoon }: UpgradeViewProps) {
               placeholder="you@example.com"
               className="w-full rounded-lg border border-dark-600 bg-dark-900 px-3 py-2 text-sm text-content-primary outline-none focus:border-accent-blue"
             />
-            {checkoutError && (
-              <p className="text-xs text-red-400">{checkoutError}</p>
-            )}
+            {checkoutError && <p className="text-xs text-red-400">{checkoutError}</p>}
           </div>
         )}
 
         <div className="mb-6 grid gap-3 sm:grid-cols-3">
           {/* Free */}
           <div className={cardClass('free')}>
-            <button
-              type="button"
-              className="w-full text-left"
-              onClick={() => setSelectedPlan('free')}
-            >
-              <div className="text-xs font-medium uppercase tracking-wide text-txt-faint">
-                {t('pro.planFree')}
-              </div>
+            <button type="button" className="w-full text-left" onClick={() => setSelectedPlan('free')}>
+              <div className="text-xs font-medium uppercase tracking-wide text-txt-faint">{t('pro.planFree')}</div>
               <div className="mt-1 text-xl font-semibold text-content-primary">{t('pro.planFreePrice')}</div>
               <div className="mt-1 text-xs text-txt-muted">{t('pro.planFreeDesc')}</div>
             </button>
@@ -248,14 +226,8 @@ export default function UpgradeView({ feature, comingSoon }: UpgradeViewProps) {
 
           {/* Yearly */}
           <div className={cardClass('yearly', true)}>
-            <button
-              type="button"
-              className="w-full text-left"
-              onClick={() => setSelectedPlan('yearly')}
-            >
-              <div className="text-xs font-medium uppercase tracking-wide text-accent-blue">
-                {t('pro.planYearly')}
-              </div>
+            <button type="button" className="w-full text-left" onClick={() => setSelectedPlan('yearly')}>
+              <div className="text-xs font-medium uppercase tracking-wide text-accent-blue">{t('pro.planYearly')}</div>
               <div className="mt-1 text-xl font-semibold text-content-primary">¥99</div>
               <div className="mt-1 text-xs text-txt-muted">{t('pro.planYearlyDesc')}</div>
             </button>
@@ -292,11 +264,7 @@ export default function UpgradeView({ feature, comingSoon }: UpgradeViewProps) {
 
           {/* Perpetual */}
           <div className={cardClass('perpetual', true)}>
-            <button
-              type="button"
-              className="w-full text-left"
-              onClick={() => setSelectedPlan('perpetual')}
-            >
+            <button type="button" className="w-full text-left" onClick={() => setSelectedPlan('perpetual')}>
               <div className="text-xs font-medium uppercase tracking-wide text-accent-blue">
                 {t('pro.planPerpetual')}
               </div>
@@ -346,7 +314,7 @@ export default function UpgradeView({ feature, comingSoon }: UpgradeViewProps) {
             </button>
 
             {showActivate && (
-              <div className="mt-3 space-y-2 rounded-xl border border-dark-700/60 bg-dark-800/50 p-4">
+              <div className="border-dark-700/60 bg-dark-800/50 mt-3 space-y-2 rounded-xl border p-4">
                 <label className="ui-label" htmlFor="license-token">
                   {t('pro.pasteLicense')}
                 </label>
@@ -384,7 +352,7 @@ export default function UpgradeView({ feature, comingSoon }: UpgradeViewProps) {
           </button>
         )}
 
-        <footer className="mt-10 space-y-2 border-t border-dark-700/40 pt-5 text-[11px] leading-relaxed text-txt-faint">
+        <footer className="border-dark-700/40 mt-10 space-y-2 border-t pt-5 text-[11px] leading-relaxed text-txt-faint">
           <p className="flex items-start gap-1.5">
             <Shield className="mt-0.5 h-3 w-3 flex-shrink-0" />
             {t('pro.paymentNote')}