diff --git a/mobile/src/components/Process/approvalButton.vue b/mobile/src/components/Process/approvalButton.vue
index 29969c9c..747ea13a 100644
--- a/mobile/src/components/Process/approvalButton.vue
+++ b/mobile/src/components/Process/approvalButton.vue
@@ -4,6 +4,7 @@
         <view v-if="submitButtonShow" class="button-group">
             <u-button
                 type="info"
+                plain
                 :loading="buttonLoading"
                 @click="handleSubmit('draft')"
                 class="action-button"
@@ -12,6 +13,7 @@
             </u-button>
             <u-button
                 type="primary"
+                plain
                 :loading="buttonLoading"
                 @click="handleSubmit('submit')"
                 class="action-button submit-button"
@@ -25,6 +27,7 @@
             <u-button
                 v-if="approvalButtonShow"
                 type="primary"
+                plain
                 :loading="buttonLoading"
                 @click="handleApproval"
                 class="action-button approval-button"
@@ -34,6 +37,7 @@
             <u-button
                 v-if="id && status !== 'draft'"
                 type="primary"
+                plain
                 @click="handleApprovalRecord"
                 class="action-button"
             >
@@ -128,28 +132,10 @@ export default {
     white-space: nowrap;
 }
 
-/* 提交按钮渐变色 */
+/* 提交/审批按钮不再覆盖为渐变背景，保持镂空（plain）默认样式 */
 .submit-button {
-    background: linear-gradient(
-        135deg,
-        rgb(0, 81, 217) 0%,
-        rgb(51, 122, 235) 50%,
-        rgb(102, 163, 255) 100%
-    ) !important;
-    border: none !important;
-    color: #fff !important;
 }
-
-/* 审批按钮渐变色 */
 .approval-button {
-    background: linear-gradient(
-        135deg,
-        rgb(0, 81, 217) 0%,
-        rgb(51, 122, 235) 50%,
-        rgb(102, 163, 255) 100%
-    ) !important;
-    border: none !important;
-    color: #fff !important;
 }
 
 /* 响应式布局 - 只在非常小的屏幕上才垂直布局 */
diff --git a/mobile/src/components/Process/submitVerify.vue b/mobile/src/components/Process/submitVerify.vue
index 204fd017..375a95f1 100644
--- a/mobile/src/components/Process/submitVerify.vue
+++ b/mobile/src/components/Process/submitVerify.vue
@@ -65,6 +65,7 @@
                         <view class="copy-section">
                             <u-button
                                 type="primary"
+                                plain
                                 size="mini"
                                 icon="plus"
                                 @click="openUserSelectCopy"
@@ -130,9 +131,11 @@
                 <view class="footer">
                     <view class="buttons-grid">
                         <u-button
+                            type="primary"
+                            plain
                             :loading="buttonDisabled"
                             @click="handleCompleteTask"
-                            class="action-btn submit-btn"
+                            class="action-btn"
                         >
                             提交
                         </u-button>
@@ -183,6 +186,7 @@
                         <u-button
                             v-if="task.flowStatus === 'waiting' && buttonObj.termination"
                             type="error"
+                            plain
                             :loading="buttonDisabled"
                             @click="handleTerminationTask"
                             class="action-btn"
@@ -192,6 +196,7 @@
                         <u-button
                             v-if="task.flowStatus === 'waiting' && buttonObj.back"
                             type="error"
+                            plain
                             :loading="buttonDisabled"
                             @click="handleBackProcessOpen"
                             class="action-btn"
@@ -338,14 +343,16 @@
                     <view class="buttons-grid">
                         <u-button
                             type="primary"
+                            plain
                             :loading="backButtonDisabled"
                             @click="handleBackProcess"
-                            class="action-btn confirm-btn"
+                            class="action-btn"
                         >
                             确认
                         </u-button>
                         <u-button
                             type="info"
+                            plain
                             @click="closeBackDialog"
                             class="action-btn cancel-btn"
                         >
@@ -384,6 +391,7 @@
                             </view>
                             <u-button
                                 type="error"
+                                plain
                                 size="mini"
                                 @click="deleteMultiInstanceUser(user)"
                                 class="delete-btn"