diff --git a/client/lib/l10n/strings_es.dart b/client/lib/l10n/strings_es.dart
index 53cf6ff..5c143a0 100644
--- a/client/lib/l10n/strings_es.dart
+++ b/client/lib/l10n/strings_es.dart
@@ -370,4 +370,62 @@ class StringsEs extends AppText {
   String get ob3Title => 'Privado por diseño';
   @override
   String get ob3Sub => 'Cifrado de extremo a extremo. No guardamos ningún registro de navegación.';
+  // ── 支付 / 购买(pay-v2)──
+  @override
+  String get purchaseTitle => 'Comprar plan';
+  @override
+  String get paymentTitle => 'Pago';
+  @override
+  String get buyNow => 'Comprar ahora';
+  @override
+  String get payMethodAlipay => 'Alipay';
+  @override
+  String get payMethodCrypto => 'USDT (TRC20)';
+  @override
+  String get choosePayMethod => 'Elige un método de pago';
+  @override
+  String get proMonthly => 'Pro · Mensual';
+  @override
+  String get proQuarterly => 'Pro · Trimestral';
+  @override
+  String get proYearly => 'Pro · Anual';
+  @override
+  String get perQuarter => '/trimestre';
+  @override
+  String get perYear => '/año';
+  @override
+  String get payAmountLabel => 'Importe';
+  @override
+  String get payAddressLabel => 'Dirección';
+  @override
+  String get payNetworkLabel => 'Red';
+  @override
+  String get payExactAmountHint => 'Envía el importe exacto; se activa automáticamente';
+  @override
+  String get copied => 'Copiado';
+  @override
+  String get openAlipay => 'Pagar con Alipay';
+  @override
+  String get openAlipayHint => 'Vuelve tras pagar; esta página se actualiza sola';
+  @override
+  String get openAlipayFailed => 'No se pudo abrir Alipay; comprueba que esté instalado o inténtalo de nuevo';
+  @override
+  String get awaitingPayment => 'Esperando el pago';
+  @override
+  String get paySucceeded => 'Activado';
+  @override
+  String get payExpiresAt => 'Válido hasta';
+  @override
+  String get payDone => 'Hecho';
+  @override
+  String get payFailed => 'Pago fallido';
+  @override
+  String get payRetry => 'Reintentar';
+  @override
+  String get switchPayMethod => 'Cambiar de método de pago';
+  @override
+  String get cancelOrder => 'Cancelar pedido';
+  @override
+  String get qrNotSupported => 'Copia el contenido y ábrelo en Alipay';
 }
+
diff --git a/client/lib/l10n/strings_ja.dart b/client/lib/l10n/strings_ja.dart
index 14268b8..ac79869 100644
--- a/client/lib/l10n/strings_ja.dart
+++ b/client/lib/l10n/strings_ja.dart
@@ -370,4 +370,62 @@ class StringsJa extends AppText {
   String get ob3Title => '設計段階からプライバシー重視';
   @override
   String get ob3Sub => 'エンドツーエンドで暗号化。閲覧ログは一切保持しません。';
+  // ── 支付 / 购买(pay-v2)──
+  @override
+  String get purchaseTitle => 'プランを購入';
+  @override
+  String get paymentTitle => 'お支払い';
+  @override
+  String get buyNow => '今すぐ購入';
+  @override
+  String get payMethodAlipay => 'Alipay';
+  @override
+  String get payMethodCrypto => 'USDT (TRC20)';
+  @override
+  String get choosePayMethod => 'お支払い方法を選択';
+  @override
+  String get proMonthly => 'Pro・月額';
+  @override
+  String get proQuarterly => 'Pro・3か月';
+  @override
+  String get proYearly => 'Pro・年額';
+  @override
+  String get perQuarter => '/3か月';
+  @override
+  String get perYear => '/年';
+  @override
+  String get payAmountLabel => '送金額';
+  @override
+  String get payAddressLabel => '送金先アドレス';
+  @override
+  String get payNetworkLabel => 'ネットワーク';
+  @override
+  String get payExactAmountHint => '表示どおりの金額を送金してください。着金後に自動で有効化されます';
+  @override
+  String get copied => 'コピーしました';
+  @override
+  String get openAlipay => 'Alipay で支払う';
+  @override
+  String get openAlipayHint => 'お支払い後に戻ってください。このページは自動更新されます';
+  @override
+  String get openAlipayFailed => 'Alipay を開けませんでした。インストール状況を確認するか、後でもう一度お試しください';
+  @override
+  String get awaitingPayment => 'お支払い待ち';
+  @override
+  String get paySucceeded => '有効化されました';
+  @override
+  String get payExpiresAt => '有効期限';
+  @override
+  String get payDone => '完了';
+  @override
+  String get payFailed => 'お支払いに失敗しました';
+  @override
+  String get payRetry => '再試行';
+  @override
+  String get switchPayMethod => '別のお支払い方法にする';
+  @override
+  String get cancelOrder => '注文をキャンセル';
+  @override
+  String get qrNotSupported => '内容をコピーして Alipay で開いてください';
 }
+
diff --git a/client/lib/l10n/strings_ko.dart b/client/lib/l10n/strings_ko.dart
index 8b37b5e..f0ee488 100644
--- a/client/lib/l10n/strings_ko.dart
+++ b/client/lib/l10n/strings_ko.dart
@@ -370,4 +370,62 @@ class StringsKo extends AppText {
   String get ob3Title => '설계부터 프라이버시';
   @override
   String get ob3Sub => '종단 간 암호화. 브라우징 기록을 전혀 저장하지 않습니다.';
+  // ── 支付 / 购买(pay-v2)──
+  @override
+  String get purchaseTitle => '요금제 구매';
+  @override
+  String get paymentTitle => '결제';
+  @override
+  String get buyNow => '지금 구매';
+  @override
+  String get payMethodAlipay => 'Alipay';
+  @override
+  String get payMethodCrypto => 'USDT (TRC20)';
+  @override
+  String get choosePayMethod => '결제 수단 선택';
+  @override
+  String get proMonthly => 'Pro · 월간';
+  @override
+  String get proQuarterly => 'Pro · 분기';
+  @override
+  String get proYearly => 'Pro · 연간';
+  @override
+  String get perQuarter => '/분기';
+  @override
+  String get perYear => '/년';
+  @override
+  String get payAmountLabel => '송금 금액';
+  @override
+  String get payAddressLabel => '받는 주소';
+  @override
+  String get payNetworkLabel => '네트워크';
+  @override
+  String get payExactAmountHint => '표시된 금액과 정확히 일치하게 보내주세요. 입금 후 자동으로 활성화됩니다';
+  @override
+  String get copied => '복사됨';
+  @override
+  String get openAlipay => 'Alipay로 결제';
+  @override
+  String get openAlipayHint => '결제 후 돌아오세요. 이 페이지는 자동으로 새로고침됩니다';
+  @override
+  String get openAlipayFailed => 'Alipay를 열 수 없습니다. 설치 여부를 확인하거나 잠시 후 다시 시도해 주세요';
+  @override
+  String get awaitingPayment => '결제 대기 중';
+  @override
+  String get paySucceeded => '활성화됨';
+  @override
+  String get payExpiresAt => '유효 기간';
+  @override
+  String get payDone => '완료';
+  @override
+  String get payFailed => '결제 실패';
+  @override
+  String get payRetry => '다시 시도';
+  @override
+  String get switchPayMethod => '다른 결제 수단 선택';
+  @override
+  String get cancelOrder => '주문 취소';
+  @override
+  String get qrNotSupported => '내용을 복사한 뒤 Alipay에서 열어주세요';
 }
+
diff --git a/client/lib/l10n/strings_ru.dart b/client/lib/l10n/strings_ru.dart
index 74094d1..c4e6999 100644
--- a/client/lib/l10n/strings_ru.dart
+++ b/client/lib/l10n/strings_ru.dart
@@ -370,4 +370,62 @@ class StringsRu extends AppText {
   String get ob3Title => 'Приватность по умолчанию';
   @override
   String get ob3Sub => 'Сквозное шифрование. Мы не храним журналы просмотров.';
+  // ── 支付 / 购买(pay-v2)──
+  @override
+  String get purchaseTitle => 'Купить тариф';
+  @override
+  String get paymentTitle => 'Оплата';
+  @override
+  String get buyNow => 'Купить';
+  @override
+  String get payMethodAlipay => 'Alipay';
+  @override
+  String get payMethodCrypto => 'USDT (TRC20)';
+  @override
+  String get choosePayMethod => 'Выберите способ оплаты';
+  @override
+  String get proMonthly => 'Pro · Помесячно';
+  @override
+  String get proQuarterly => 'Pro · Ежеквартально';
+  @override
+  String get proYearly => 'Pro · Ежегодно';
+  @override
+  String get perQuarter => '/квартал';
+  @override
+  String get perYear => '/год';
+  @override
+  String get payAmountLabel => 'Сумма';
+  @override
+  String get payAddressLabel => 'Адрес';
+  @override
+  String get payNetworkLabel => 'Сеть';
+  @override
+  String get payExactAmountHint => 'Отправьте точную сумму — доступ откроется автоматически';
+  @override
+  String get copied => 'Скопировано';
+  @override
+  String get openAlipay => 'Оплатить через Alipay';
+  @override
+  String get openAlipayHint => 'Вернитесь после оплаты — страница обновится сама';
+  @override
+  String get openAlipayFailed => 'Не удалось открыть Alipay. Проверьте, установлен ли он, или повторите позже';
+  @override
+  String get awaitingPayment => 'Ожидание оплаты';
+  @override
+  String get paySucceeded => 'Активировано';
+  @override
+  String get payExpiresAt => 'Действует до';
+  @override
+  String get payDone => 'Готово';
+  @override
+  String get payFailed => 'Оплата не прошла';
+  @override
+  String get payRetry => 'Повторить';
+  @override
+  String get switchPayMethod => 'Сменить способ оплаты';
+  @override
+  String get cancelOrder => 'Отменить заказ';
+  @override
+  String get qrNotSupported => 'Скопируйте данные и откройте в Alipay';
 }
+
diff --git a/client/pubspec.yaml b/client/pubspec.yaml
index 2bd6c5b..b956b5c 100644
--- a/client/pubspec.yaml
+++ b/client/pubspec.yaml
@@ -27,7 +27,6 @@ dependencies:
   launch_at_startup: ^0.5.1
   tray_manager: ^0.5.3
   window_manager: ^0.5.1
-  url_launcher: ^6.3.0      # 支付 redirect(如支付宝)拉起外部浏览器/App
 
 dev_dependencies:
   flutter_test: