diff --git a/frontend/src/style.css b/frontend/src/style.css
index e36a365101..f9b64f781c 100644
--- a/frontend/src/style.css
+++ b/frontend/src/style.css
@@ -141,6 +141,13 @@
     @apply dark:shadow-amber-500/20;
   }
 
+  .btn-stripe {
+    @apply bg-[#635bff] text-white shadow-md shadow-[#635bff]/25;
+    @apply hover:bg-[#5851ea] hover:shadow-lg hover:shadow-[#635bff]/30;
+    @apply dark:bg-[#7a73ff] dark:shadow-[#7a73ff]/20;
+    @apply dark:hover:bg-[#635bff];
+  }
+
   .btn-sm {
     @apply rounded-lg px-3 py-1.5 text-xs;
   }
diff --git a/frontend/src/views/user/PaymentQRCodeView.vue b/frontend/src/views/user/PaymentQRCodeView.vue
index b19c36629f..443707f5dc 100644
--- a/frontend/src/views/user/PaymentQRCodeView.vue
+++ b/frontend/src/views/user/PaymentQRCodeView.vue
@@ -21,11 +21,11 @@
         <p class="mt-2 text-sm text-gray-400 dark:text-gray-500">{{ t('payment.qr.waitingPayment') }}</p>
       </div>
       <a v-if="payUrl && !qrUrl && !expired" :href="payUrl" target="_blank" rel="noopener noreferrer"
-        class="inline-flex w-full items-center justify-center gap-2 rounded-lg bg-primary-500 py-3 text-sm font-medium text-white transition-colors hover:bg-primary-600 dark:bg-primary-600 dark:hover:bg-primary-500">
+        class="btn btn-primary w-full py-3">
         {{ t('payment.qr.openPayWindow') }}
       </a>
       <!-- Cancel button -->
-      <button v-if="!expired && orderId" class="w-full rounded-lg border border-gray-300 bg-white py-2.5 text-sm font-medium text-gray-700 transition-colors hover:bg-gray-50 dark:border-dark-600 dark:bg-dark-800 dark:text-gray-300 dark:hover:bg-dark-700" :disabled="cancelling" @click="handleCancel">
+      <button v-if="!expired && orderId" class="btn btn-secondary w-full" :disabled="cancelling" @click="handleCancel">
         {{ cancelling ? t('common.processing') : t('payment.qr.cancelOrder') }}
       </button>
     </div>
diff --git a/frontend/src/views/user/StripePaymentView.vue b/frontend/src/views/user/StripePaymentView.vue
index d8385eefc0..3e2c818513 100644
--- a/frontend/src/views/user/StripePaymentView.vue
+++ b/frontend/src/views/user/StripePaymentView.vue
@@ -26,7 +26,7 @@
             <Icon name="checkCircle" size="md" />
             <span class="text-sm font-medium">{{ t('payment.stripeSuccessProcessing') }}</span>
           </div>
-          <button v-if="!stripeSuccess" class="mt-6 w-full rounded-lg bg-[#635bff] py-3 text-base font-semibold text-white transition-colors hover:bg-[#5851ea] disabled:opacity-50 dark:bg-[#7a73ff] dark:hover:bg-[#635bff]" :disabled="stripeSubmitting || !stripeReady" @click="handlePay">
+          <button v-if="!stripeSuccess" class="btn btn-stripe mt-6 w-full py-3 text-base" :disabled="stripeSubmitting || !stripeReady" @click="handlePay">
             <span v-if="stripeSubmitting" class="flex items-center justify-center gap-2">
               <span class="h-4 w-4 animate-spin rounded-full border-2 border-white border-t-transparent"></span>
               {{ t('common.processing') }}