diff --git a/backend/src/main/java/com/openisle/controller/ActivityController.java b/backend/src/main/java/com/openisle/controller/ActivityController.java
index 2ea603735..4cbe4db0f 100644
--- a/backend/src/main/java/com/openisle/controller/ActivityController.java
+++ b/backend/src/main/java/com/openisle/controller/ActivityController.java
@@ -1,7 +1,9 @@
 package com.openisle.controller;
 
+import com.openisle.dto.ActivityDto;
 import com.openisle.dto.MilkTeaInfoDto;
 import com.openisle.dto.MilkTeaRedeemRequest;
+import com.openisle.mapper.ActivityMapper;
 import com.openisle.model.Activity;
 import com.openisle.model.ActivityType;
 import com.openisle.model.User;
@@ -12,6 +14,7 @@ import org.springframework.security.core.Authentication;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.List;
+import java.util.stream.Collectors;
 
 @RestController
 @RequestMapping("/api/activities")
@@ -19,10 +22,13 @@ import java.util.List;
 public class ActivityController {
     private final ActivityService activityService;
     private final UserService userService;
+    private final ActivityMapper activityMapper;
 
     @GetMapping
-    public List<Activity> list() {
-        return activityService.list();
+    public List<ActivityDto> list() {
+        return activityService.list().stream()
+                .map(activityMapper::toDto)
+                .collect(Collectors.toList());
     }
 
     @GetMapping("/milk-tea")
diff --git a/backend/src/main/java/com/openisle/dto/ActivityDto.java b/backend/src/main/java/com/openisle/dto/ActivityDto.java
new file mode 100644
index 000000000..75e71ee17
--- /dev/null
+++ b/backend/src/main/java/com/openisle/dto/ActivityDto.java
@@ -0,0 +1,21 @@
+package com.openisle.dto;
+
+import com.openisle.model.ActivityType;
+import lombok.Data;
+
+import java.time.LocalDateTime;
+
+/**
+ * DTO representing an activity without participant details.
+ */
+@Data
+public class ActivityDto {
+    private Long id;
+    private String title;
+    private String icon;
+    private String content;
+    private LocalDateTime startTime;
+    private LocalDateTime endTime;
+    private ActivityType type;
+    private boolean ended;
+}
diff --git a/backend/src/main/java/com/openisle/mapper/ActivityMapper.java b/backend/src/main/java/com/openisle/mapper/ActivityMapper.java
new file mode 100644
index 000000000..5c273f7f1
--- /dev/null
+++ b/backend/src/main/java/com/openisle/mapper/ActivityMapper.java
@@ -0,0 +1,23 @@
+package com.openisle.mapper;
+
+import com.openisle.dto.ActivityDto;
+import com.openisle.model.Activity;
+import org.springframework.stereotype.Component;
+
+/** Mapper for activity entities. */
+@Component
+public class ActivityMapper {
+
+    public ActivityDto toDto(Activity a) {
+        ActivityDto dto = new ActivityDto();
+        dto.setId(a.getId());
+        dto.setTitle(a.getTitle());
+        dto.setIcon(a.getIcon());
+        dto.setContent(a.getContent());
+        dto.setStartTime(a.getStartTime());
+        dto.setEndTime(a.getEndTime());
+        dto.setType(a.getType());
+        dto.setEnded(a.isEnded());
+        return dto;
+    }
+}
diff --git a/backend/src/main/resources/application.properties b/backend/src/main/resources/application.properties
index f3c220f42..f4e59995c 100644
--- a/backend/src/main/resources/application.properties
+++ b/backend/src/main/resources/application.properties
@@ -10,7 +10,8 @@ spring.jpa.hibernate.ddl-auto=update
 app.jwt.secret=${JWT_SECRET:jwt_sec}
 app.jwt.reason-secret=${JWT_REASON_SECRET:jwt_reason_sec}
 app.jwt.reset-secret=${JWT_RESET_SECRET:jwt_reset_sec}
-app.jwt.expiration=${JWT_EXPIRATION:86400000}
+# 30 days
+app.jwt.expiration=${JWT_EXPIRATION:2592000000}
 # Password strength: LOW, MEDIUM or HIGH
 app.password.strength=${PASSWORD_STRENGTH:LOW}
 
diff --git a/frontend_nuxt/assets/global.css b/frontend_nuxt/assets/global.css
index 6ad583063..40558002c 100644
--- a/frontend_nuxt/assets/global.css
+++ b/frontend_nuxt/assets/global.css
@@ -16,6 +16,7 @@
   --menu-text-color: black;
   --scroller-background-color: rgba(130, 175, 180, 0.5);
   --normal-background-color: rgb(241, 241, 241);
+  --lottery-background-color: rgb(241, 241, 241);
   --login-background-color: rgb(248, 248, 248);
   --login-background-color-hover: #e0e0e0;
   --text-color: black;
@@ -42,6 +43,7 @@
   --menu-selected-background-color: rgba(255, 255, 255, 0.1);
   --menu-text-color: white;
   --normal-background-color: #000000;
+  --lottery-background-color: #4e4e4e;
   --login-background-color: #575757;
   --login-background-color-hover: #717171;
   --text-color: #eee;
diff --git a/frontend_nuxt/components/AchievementList.vue b/frontend_nuxt/components/AchievementList.vue
index 4131339f1..1f84ec9de 100644
--- a/frontend_nuxt/components/AchievementList.vue
+++ b/frontend_nuxt/components/AchievementList.vue
@@ -130,6 +130,7 @@ const selectMedal = async (medal) => {
 .achievements-list-item-description {
   font-size: 14px;
   color: #666;
+  text-align: center;
 }
 
 .not_completed {
@@ -162,7 +163,10 @@ const selectMedal = async (medal) => {
   }
 
   .achievements-list-item {
-    min-width: calc(50% - 30px);
+    width: calc(50% - 27px);
+    align-items: center;
+    justify-content: center;
+    gap: 10px;
   }
 }
 </style>
diff --git a/frontend_nuxt/components/HeaderComponent.vue b/frontend_nuxt/components/HeaderComponent.vue
index df31e940b..71ed1735d 100644
--- a/frontend_nuxt/components/HeaderComponent.vue
+++ b/frontend_nuxt/components/HeaderComponent.vue
@@ -50,11 +50,12 @@
 
 <script>
 import { authState, clearToken, loadCurrentUser } from '~/utils/auth'
-import { watch, nextTick } from 'vue'
+import { watch, nextTick, ref, computed } from 'vue'
 import { fetchUnreadCount, notificationState } from '~/utils/notification'
 import DropdownMenu from '~/components/DropdownMenu.vue'
 import SearchDropdown from '~/components/SearchDropdown.vue'
 import { useIsMobile } from '~/utils/screen'
+import { useRouter } from 'vue-router'
 import { ClientOnly } from '#components'
 
 export default {
@@ -66,18 +67,14 @@ export default {
       default: true,
     },
   },
-  data() {
-    return {
-      avatar: '',
-      showSearch: false,
-      searchDropdown: null,
-    }
-  },
   setup() {
     const isLogin = computed(() => authState.loggedIn)
     const isMobile = useIsMobile()
     const unreadCount = computed(() => notificationState.unreadCount)
     const router = useRouter()
+    const avatar = ref('')
+    const showSearch = ref(false)
+    const searchDropdown = ref(null)
 
     const goToHome = () => {
       router.push('/').then(() => {
@@ -144,6 +141,8 @@ export default {
       goToProfile,
       goToSignup,
       goToLogout,
+      showSearch,
+      searchDropdown,
     }
   },
 
diff --git a/frontend_nuxt/nuxt.config.ts b/frontend_nuxt/nuxt.config.ts
index 7a2a87894..bf7035354 100644
--- a/frontend_nuxt/nuxt.config.ts
+++ b/frontend_nuxt/nuxt.config.ts
@@ -22,6 +22,19 @@ export default defineNuxtConfig({
         },
       ],
       link: [
+        {
+          rel: 'icon',
+          type: 'image/x-icon',
+          href: '/favicon.ico',
+        },
+        {
+          rel: 'apple-touch-icon',
+          href: '/apple-touch-icon.png',
+        },
+        {
+          rel: 'manifest',
+          href: '/manifest.webmanifest',
+        },
         {
           rel: 'stylesheet',
           href: 'https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.7.2/css/all.min.css',
diff --git a/frontend_nuxt/pages/new-post.vue b/frontend_nuxt/pages/new-post.vue
index 7c5640c80..32b776d95 100644
--- a/frontend_nuxt/pages/new-post.vue
+++ b/frontend_nuxt/pages/new-post.vue
@@ -43,6 +43,7 @@
           @crop="onPrizeCropped"
         />
         <div class="prize-row">
+          <span class="prize-row-title">奖品图片</span>
           <label class="prize-container">
             <img v-if="prizeIcon" :src="prizeIcon" class="prize-preview" alt="prize" />
             <i v-else class="fa-solid fa-image default-prize-icon"></i>
@@ -51,11 +52,11 @@
           </label>
         </div>
         <div class="prize-name-row">
-          <span>奖品描述</span>
-          <input class="prize-name-input" v-model="prizeDescription" placeholder="奖品描述" />
+          <span class="prize-row-title">奖品描述</span>
+          <BaseInput v-model="prizeDescription" placeholder="奖品描述" />
         </div>
         <div class="prize-count-row">
-          <span>奖品数量</span>
+          <span class="prize-row-title">奖品数量</span>
           <div class="prize-count-input">
             <input
               class="prize-count-input-field"
@@ -66,7 +67,7 @@
           </div>
         </div>
         <div class="prize-time-row">
-          <span>抽奖结束时间</span>
+          <span class="prize-row-title">抽奖结束时间</span>
           <client-only>
             <flat-pickr v-model="endTime" :config="dateConfig" class="time-picker" />
           </client-only>
@@ -490,6 +491,7 @@ export default {
 .post-submit:hover {
   background-color: var(--primary-color-hover);
 }
+
 .post-submit.disabled:hover {
   background-color: var(--primary-color-disabled);
 }
@@ -534,8 +536,21 @@ export default {
   gap: 20px;
 }
 
+.prize-row-title {
+  font-size: 16px;
+  color: var(--text-color);
+  font-weight: bold;
+  margin-bottom: 10px;
+}
+
 .prize-row {
   display: flex;
+  flex-direction: column;
+}
+
+.prize-name-row {
+  display: flex;
+  flex-direction: column;
 }
 
 .prize-container {
@@ -545,11 +560,15 @@ export default {
   border-radius: 10px;
   overflow: hidden;
   cursor: pointer;
+  background-color: var(--lottery-background-color);
+  display: flex;
+  align-items: center;
+  justify-content: center;
 }
 
 .default-prize-icon {
-  font-size: 100px;
-  opacity: 0.5;
+  font-size: 30px;
+  opacity: 0.1;
   color: var(--text-color);
 }
 
@@ -585,8 +604,7 @@ export default {
 .prize-count-row,
 .prize-time-row {
   display: flex;
-  align-items: center;
-  gap: 10px;
+  flex-direction: column;
 }
 
 .prize-count-input {
@@ -612,11 +630,18 @@ export default {
   padding: 0 10px;
   font-size: 16px;
   color: var(--text-color);
+  background-color: var(--lottery-background-color);
 }
 
 .time-picker {
   max-width: 200px;
   height: 30px;
+  background-color: var(--lottery-background-color);
+  border-radius: 5px;
+  border: 1px solid var(--border-color);
+  padding: 0 10px;
+  font-size: 16px;
+  color: var(--text-color);
 }
 
 @media (max-width: 768px) {
diff --git a/frontend_nuxt/pages/posts/[id]/index.vue b/frontend_nuxt/pages/posts/[id]/index.vue
index a3b39b9c9..936e8e554 100644
--- a/frontend_nuxt/pages/posts/[id]/index.vue
+++ b/frontend_nuxt/pages/posts/[id]/index.vue
@@ -110,20 +110,35 @@
               <div class="prize-count">x {{ lottery.prizeCount }}</div>
             </div>
             <div class="prize-end-time prize-info-right">
-              <div class="prize-end-time-title">离结束还有</div>
+              <div v-if="!isMobile" class="prize-end-time-title">离结束还有</div>
               <div class="prize-end-time-value">{{ countdown }}</div>
-              <div
-                v-if="loggedIn && !hasJoined && !lotteryEnded"
-                class="join-prize-button"
-                @click="joinLottery"
-              >
-                <div class="join-prize-button-text">参与抽奖</div>
-              </div>
-              <div v-else-if="hasJoined" class="join-prize-button-disabled">
-                <div class="join-prize-button-text">已参与</div>
+              <div v-if="!isMobile" class="join-prize-button-container-desktop">
+                <div
+                  v-if="loggedIn && !hasJoined && !lotteryEnded"
+                  class="join-prize-button"
+                  @click="joinLottery"
+                >
+                  <div class="join-prize-button-text">参与抽奖</div>
+                </div>
+                <div v-else-if="hasJoined" class="join-prize-button-disabled">
+                  <div class="join-prize-button-text">已参与</div>
+                </div>
               </div>
             </div>
           </div>
+
+          <div v-if="isMobile" class="join-prize-button-container-mobile">
+            <div
+              v-if="loggedIn && !hasJoined && !lotteryEnded"
+              class="join-prize-button"
+              @click="joinLottery"
+            >
+              <div class="join-prize-button-text">参与抽奖</div>
+            </div>
+            <div v-else-if="hasJoined" class="join-prize-button-disabled">
+              <div class="join-prize-button-text">已参与</div>
+            </div>
+          </div>
         </div>
         <div class="prize-member-container">
           <img
@@ -145,17 +160,22 @@
               alt="avatar"
               @click="gotoUser(w.id)"
             />
+            <div v-if="lotteryWinners.length === 1" class="prize-member-winner-name">
+              {{ lotteryWinners[0].username }}
+            </div>
           </div>
         </div>
       </div>
 
-      <CommentEditor
-        @submit="postComment"
-        :loading="isWaitingPostingComment"
-        :disabled="!loggedIn"
-        :show-login-overlay="!loggedIn"
-        :parent-user-name="author.username"
-      />
+      <ClientOnly>
+        <CommentEditor
+          @submit="postComment"
+          :loading="isWaitingPostingComment"
+          :disabled="!loggedIn"
+          :show-login-overlay="!loggedIn"
+          :parent-user-name="author.username"
+        />
+      </ClientOnly>
 
       <div class="comment-config-container">
         <div class="comment-sort-container">
@@ -1179,7 +1199,8 @@ export default {
   display: flex;
   flex-direction: column;
   gap: 10px;
-  background-color: var(--normal-background-color);
+  background-color: var(--lottery-background-color);
+  border-radius: 10px;
   padding: 10px;
 }
 
@@ -1188,6 +1209,12 @@ export default {
   flex-direction: row;
   justify-content: space-between;
   width: 100%;
+  align-items: center;
+}
+
+.join-prize-button-container-mobile {
+  margin-top: 15px;
+  margin-bottom: 10px;
 }
 
 .prize-icon {
@@ -1254,6 +1281,7 @@ export default {
   padding: 5px 10px;
   border-radius: 8px;
   cursor: pointer;
+  text-align: center;
 }
 
 .join-prize-button:hover {
@@ -1261,6 +1289,7 @@ export default {
 }
 
 .join-prize-button-disabled {
+  text-align: center;
   margin-left: 10px;
   background-color: var(--primary-color);
   color: white;
@@ -1276,6 +1305,8 @@ export default {
   height: 30px;
   margin-left: 3px;
   border-radius: 50%;
+  object-fit: cover;
+  cursor: pointer;
 }
 
 .prize-member-winner {
@@ -1346,5 +1377,10 @@ export default {
   .loading-container {
     width: 100%;
   }
+
+  .join-prize-button,
+  .join-prize-button-disabled {
+    margin-left: 0;
+  }
 }
 </style>
diff --git a/frontend_nuxt/public/favicon.ico b/frontend_nuxt/public/favicon.ico
new file mode 100644
index 000000000..09604d7ce
Binary files /dev/null and b/frontend_nuxt/public/favicon.ico differ
diff --git a/frontend_nuxt/public/icon-120.png b/frontend_nuxt/public/icon-120.png
new file mode 100644
index 000000000..67392b878
Binary files /dev/null and b/frontend_nuxt/public/icon-120.png differ
diff --git a/frontend_nuxt/public/icon-152.png b/frontend_nuxt/public/icon-152.png
new file mode 100644
index 000000000..bf6bae839
Binary files /dev/null and b/frontend_nuxt/public/icon-152.png differ
diff --git a/frontend_nuxt/public/icon-180.png b/frontend_nuxt/public/icon-180.png
new file mode 100644
index 000000000..07b316714
Binary files /dev/null and b/frontend_nuxt/public/icon-180.png differ
diff --git a/frontend_nuxt/public/icon-192.png b/frontend_nuxt/public/icon-192.png
new file mode 100644
index 000000000..9da61afd4
Binary files /dev/null and b/frontend_nuxt/public/icon-192.png differ
diff --git a/frontend_nuxt/public/icon-512.png b/frontend_nuxt/public/icon-512.png
new file mode 100644
index 000000000..af16336e2
Binary files /dev/null and b/frontend_nuxt/public/icon-512.png differ
diff --git a/frontend_nuxt/public/manifest.webmanifest b/frontend_nuxt/public/manifest.webmanifest
new file mode 100644
index 000000000..8ccccb8e2
--- /dev/null
+++ b/frontend_nuxt/public/manifest.webmanifest
@@ -0,0 +1,20 @@
+{
+  "name": "OpenIsle",
+  "short_name": "OpenIsle",
+  "start_url": "/",
+  "display": "standalone",
+  "background_color": "#ffffff",
+  "theme_color": "#ffffff",
+  "icons": [
+    {
+      "src": "/icon-192.png",
+      "sizes": "192x192",
+      "type": "image/png"
+    },
+    {
+      "src": "/icon-512.png",
+      "sizes": "512x512",
+      "type": "image/png"
+    }
+  ]
+}