fix: 修改样式

lib/app/modules/kr_invite/controllers/kr_invite_controller.dart

@@ -152,7 +152,7 @@ class KRInviteController extends GetxController {
 
   /// 处理绑定邀请码
   Future<void> kr_handleBindInviteCode() async {
-    final text = otherInviteCodeController.text;
+    final text = otherInviteCodeController.text.trim();
     if (text.isEmpty) {
       KRCommonUtil.kr_showToast('请输入邀请码');
       return;

lib/app/modules/kr_invite/views/kr_invite_view.dart

@@ -172,9 +172,10 @@ class KRInviteView extends GetView<KRInviteController> {
                                         textInputAction: TextInputAction.done,
                                         onSubmitted: (_) => controller.kr_handleBindInviteCode(),
                                         textAlign: TextAlign.center,
+                                        maxLength: 10,
                                         style: const TextStyle(color: Colors.white, fontWeight: FontWeight.bold),
                                         decoration: InputDecoration(
-                                          hintText: '填入邀请人邀请码兑换免费时长...',
+                                          hintText: '填码领免费时长...',
                                           hintStyle: const TextStyle(color: Color(0xFFA6A6A6)),
                                           filled: true,
                                           fillColor: Colors.transparent,