style: 调整按钮颜色和文本区域内边距

将发布按钮颜色从 #f97316 改为 #FFA135
为 nut-textarea 添加内边距样式

@@ -14,6 +14,10 @@
   font-weight: normal !important;
 }
 
+.nut-textarea {
+  padding: 20rpx 30rpx !important;
+}
+
 button {
     margin: 0;
     padding: 0;

@@ -224,10 +224,10 @@
 
         <!-- 底部按钮 -->
         <view class="bottom-actions">
-            <nut-button v-if="!isAuthMode" color="#f97316" size="large" block @click="onPublish">
+            <nut-button v-if="!isAuthMode" color="#FFA135" size="large" block @click="onPublish">
                 {{ isEditMode ? '保存修改' : '确认发布' }}
             </nut-button>
-            <nut-button v-else color="#f97316" size="large" block @click="onPublish">
+            <nut-button v-else color="#FFA135" size="large" block @click="onPublish">
                 确认发布
             </nut-button>
         </view>