style: standardize tailwind classes and clean unused assets

Standardize Tailwind CSS usage across the codebase: replace legacy shorthand utilities with modern syntax, update color classes to use bracket notation, fix margin/padding units, delete unused CreateServiceOrder SCSS stylesheet and image asset, and resolve minor style inconsistencies.

src/pages/home/components/ChatMainList/index.vue

@@ -100,7 +100,7 @@
         </template>
 
         <template v-else>
-          <ChatCardOther class="flex flex-justify-center" :text="item.msg">
+          <ChatCardOther class="flex justify-center" :text="item.msg">
             <ChatGuide v-if="chatMsgList.length < 2" />
             <ActivityListComponent v-if="
               mainPageDataModel.activityList &&