diff --git a/app-icon.svg b/app-icon.svg
deleted file mode 100644
index c58fc54..0000000
--- a/app-icon.svg
+++ /dev/null
@@ -1,115 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="1024" height="1024" viewBox="0 0 1024 1024">
-  <defs>
-    <!-- Soft ambient glow behind the book -->
-    <radialGradient id="ambient" cx="50%" cy="50%" r="50%">
-      <stop offset="0%" stop-color="#FFFFFF" stop-opacity="0.08"/>
-      <stop offset="70%" stop-color="#FFFFFF" stop-opacity="0.03"/>
-      <stop offset="100%" stop-color="#FFFFFF" stop-opacity="0"/>
-    </radialGradient>
-
-    <!-- Matte paper sheen for the open pages -->
-    <linearGradient id="pageL" x1="0%" y1="0%" x2="100%" y2="0%">
-      <stop offset="0%" stop-color="#FDFDFD"/>
-      <stop offset="55%" stop-color="#FFFFFF"/>
-      <stop offset="100%" stop-color="#ECEDF0"/>
-    </linearGradient>
-    <linearGradient id="pageR" x1="100%" y1="0%" x2="0%" y2="0%">
-      <stop offset="0%" stop-color="#FDFDFD"/>
-      <stop offset="55%" stop-color="#FFFFFF"/>
-      <stop offset="100%" stop-color="#ECEDF0"/>
-    </linearGradient>
-
-    <!-- Purple ghost mark -->
-    <linearGradient id="ghost" x1="0%" y1="0%" x2="0%" y2="100%">
-      <stop offset="0%" stop-color="#667EEA" stop-opacity="0.55"/>
-      <stop offset="100%" stop-color="#667EEA" stop-opacity="0.35"/>
-    </linearGradient>
-
-    <!-- Soft edge light around the book -->
-    <filter id="softglow" x="-40%" y="-40%" width="180%" height="180%">
-      <feGaussianBlur stdDeviation="14" result="blur"/>
-    </filter>
-    <filter id="shadow" x="-50%" y="-50%" width="200%" height="200%">
-      <feGaussianBlur stdDeviation="26" result="blur"/>
-    </filter>
-
-    <!-- Clip to rounded square -->
-    <clipPath id="tile">
-      <rect x="0" y="0" width="1024" height="1024" rx="224"/>
-    </clipPath>
-  </defs>
-
-  <!-- Pure black tile -->
-  <g clip-path="url(#tile)">
-    <rect x="0" y="0" width="1024" height="1024" fill="#000000"/>
-    <rect x="0" y="0" width="1024" height="1024" fill="url(#ambient)"/>
-
-    <!-- Floor shadow -->
-    <ellipse cx="512" cy="760" rx="300" ry="56" fill="#000000" opacity="0.9" filter="url(#shadow)"/>
-
-    <!-- ==== OPEN BOOK (centered ~70%) ==== -->
-    <g>
-      <!-- Book spine shadow -->
-      <rect x="500" y="330" width="24" height="330" fill="#000000" opacity="0.06" filter="url(#softglow)"/>
-
-      <!-- Left cover / back board -->
-      <path d="M512 340 C 400 312, 292 320, 232 348 L 232 672 C 292 644, 400 636, 512 664 Z"
-            fill="#EFEFF2" filter="url(#softglow)"/>
-
-      <!-- Right cover / back board -->
-      <path d="M512 340 C 624 312, 732 320, 792 348 L 792 672 C 732 644, 624 636, 512 664 Z"
-            fill="#EFEFF2" filter="url(#softglow)"/>
-
-      <!-- Left page (curled up, reading posture) -->
-      <path d="M512 322 C 408 298, 304 306, 246 334
-               L 246 654 C 304 626, 408 618, 512 650 Z"
-            fill="url(#pageL)"/>
-      <!-- Left page top edge curl highlight -->
-      <path d="M512 322 C 408 298, 304 306, 246 334"
-            fill="none" stroke="#FFFFFF" stroke-width="6" stroke-linecap="round" opacity="0.9"/>
-
-      <!-- Right page (curled up, reading posture) -->
-      <path d="M512 322 C 616 298, 720 306, 778 334
-               L 778 654 C 720 626, 616 618, 512 650 Z"
-            fill="url(#pageR)"/>
-      <!-- Right page top edge curl highlight -->
-      <path d="M512 322 C 616 298, 720 306, 778 334"
-            fill="none" stroke="#FFFFFF" stroke-width="6" stroke-linecap="round" opacity="0.9"/>
-
-      <!-- Center crease -->
-      <path d="M512 322 L 512 650"
-            fill="none" stroke="#DCDDE0" stroke-width="4" opacity="0.7"/>
-
-      <!-- Page rim light (soft glow at edges) -->
-      <path d="M246 334 L 246 654" stroke="#FFFFFF" stroke-width="2" opacity="0.8"/>
-      <path d="M778 334 L 778 654" stroke="#FFFFFF" stroke-width="2" opacity="0.8"/>
-    </g>
-
-    <!-- ==== GHOST MARK (translucent purple) ==== -->
-    <g opacity="0.92">
-      <!-- Ghost body -->
-      <path d="M512 400
-               C 552 400, 580 428, 580 468
-               L 580 540
-               C 580 548, 574 554, 566 554
-               C 558 554, 552 548, 552 540
-               L 552 546
-               C 552 554, 546 560, 538 560
-               C 530 560, 524 554, 524 546
-               L 524 554
-               C 524 562, 518 568, 510 568
-               C 502 568, 496 562, 496 554
-               L 496 540
-               C 444 540, 444 462, 466 426
-               C 484 402, 500 400, 512 400 Z"
-            fill="url(#ghost)" filter="url(#softglow)"/>
-      <!-- Ghost eyes -->
-      <ellipse cx="486" cy="452" rx="9" ry="12" fill="#667EEA" opacity="0.6"/>
-      <ellipse cx="538" cy="452" rx="9" ry="12" fill="#667EEA" opacity="0.6"/>
-    </g>
-
-    <!-- Edge light wrap (elegant rim) -->
-    <path d="M512 322 C 408 298, 304 306, 246 334"
-          fill="none" stroke="#FFFFFF" stroke-width="1.5" opacity="0.35" filter="url(#softglow)"/>
-  </g>
-</svg>
diff --git a/app-icon1.png b/app-icon1.png
deleted file mode 100644
index e10d414..0000000
Binary files a/app-icon1.png and /dev/null differ
diff --git a/src/components/UpdateModal.vue b/src/components/UpdateModal.vue
index 2b04ad7..8e6018a 100644
--- a/src/components/UpdateModal.vue
+++ b/src/components/UpdateModal.vue
@@ -1,31 +1,29 @@
 <template>
   <n-modal :show="showUpdateModal" preset="card" :title="modalTitle" :bordered="false" :closable="!busy"
-    :mask-closable="false" :close-on-esc="false" style="width: 430px" @close="cancelUpdate">
+    :mask-closable="false" :close-on-esc="false" content-scrollable :segmented="{ content: true, footer: true }"
+    :style="{ width: '60vw', height: '50vh' }" @close="cancelUpdate">
     <template #header-extra>
       <span v-if="updateInfo" class="update-current">当前 v{{ updateInfo.currentVersion }}</span>
     </template>
 
-    <div class="update-body">
-      <n-scrollbar class="update-scroll">
-        <div v-if="renderedBody" class="markdown-body" v-html="renderedBody" />
-        <n-empty v-else description="暂无更新说明" />
-      </n-scrollbar>
-    </div>
-
-    <div v-if="downloading || installing" class="update-progress">
-      <n-progress type="line" :percentage="progress" :processing="downloading" indicator-placement="inside"
-        :height="18" />
-      <div class="progress-hint">{{ progressHint }}</div>
-    </div>
+    <div v-if="renderedBody" class="markdown-body" v-html="renderedBody" />
+    <n-empty v-else description="暂无更新说明" />
 
     <template #footer>
       <div class="update-footer">
-        <n-button quaternary :disabled="busy" @click="skipVersion">跳过此版本</n-button>
-        <div class="update-footer-right">
-          <n-button v-if="!busy" @click="cancelUpdate">取消</n-button>
-          <n-button type="primary" :loading="downloading" @click="startUpdate">
-            {{ installing ? "安装中..." : downloading ? "下载中..." : "立即更新" }}
-          </n-button>
+        <div v-if="downloading || installing" class="update-progress">
+          <n-progress type="line" :percentage="progress" :processing="downloading" indicator-placement="inside"
+            :height="18" />
+          <div class="progress-hint">{{ progressHint }}</div>
+        </div>
+        <div class="update-footer-actions">
+          <n-button quaternary size="small" :disabled="busy" @click="skipVersion">跳过此版本</n-button>
+          <div class="update-footer-right">
+            <n-button size="small" v-if="!busy" @click="cancelUpdate">取消</n-button>
+            <n-button size="small" type="primary" :loading="downloading" @click="startUpdate">
+              {{ installing ? "安装中..." : downloading ? "下载中..." : "立即更新" }}
+            </n-button>
+          </div>
         </div>
       </div>
     </template>
@@ -77,12 +75,6 @@ const progressHint = computed(() => {
   color: var(--color-text-secondary);
 }
 
-.update-body {
-  .update-scroll {
-    height: 340px;
-  }
-}
-
 .markdown-body {
   padding-right: 8px;
   font-size: 13px;
@@ -198,7 +190,7 @@ const progressHint = computed(() => {
 }
 
 .update-progress {
-  margin-top: 12px;
+  width: 100%;
 }
 
 .progress-hint {
@@ -209,6 +201,13 @@ const progressHint = computed(() => {
 }
 
 .update-footer {
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+  width: 100%;
+}
+
+.update-footer-actions {
   display: flex;
   align-items: center;
   justify-content: space-between;
diff --git a/src/views/setting/About.vue b/src/views/setting/About.vue
index f43c1f1..2492e27 100644
--- a/src/views/setting/About.vue
+++ b/src/views/setting/About.vue
@@ -76,7 +76,7 @@ import {
   SyncOutlined,
   ThunderboltOutlined,
 } from "@vicons/antd"
-import appIcon from "../../../app-icon.svg"
+import appIcon from "../../../app-icon.png"
 import { checkAndPrompt } from "@/utils/updater"
 
 const message = useMessage()