diff --git a/src/views/TeacherDownloadView.vue b/src/views/TeacherDownloadView.vue
index 2d55567..dc6309c 100644
--- a/src/views/TeacherDownloadView.vue
+++ b/src/views/TeacherDownloadView.vue
@@ -1,112 +1,143 @@
 <script setup lang="ts">
-import { ref, computed, onMounted, onUnmounted } from 'vue'
-import { RouterLink } from 'vue-router'
-import { Monitor, Download, ArrowLeft, CheckCircle2, AlertCircle } from 'lucide-vue-next'
-import logoImg from '@/assets/logo.png'
+import { ref, computed, onMounted, onUnmounted } from "vue";
+import { RouterLink } from "vue-router";
+import {
+  Monitor,
+  Download,
+  ArrowLeft,
+  CheckCircle2,
+  AlertCircle,
+} from "lucide-vue-next";
+import logoImg from "@/assets/logo.png";
 import {
   TEACHER_APP_DOWNLOAD_URL,
   TEACHER_APP_BACKUP_DOWNLOAD_URL,
   TEACHER_APP_FILE_NAME,
   TEACHER_APP_FILE_SIZE,
   TEACHER_DOWNLOAD_COUNTDOWN_SECONDS,
-} from '@/constants/teacherApp'
+} from "@/constants/teacherApp";
 
-const secondsLeft = ref(TEACHER_DOWNLOAD_COUNTDOWN_SECONDS)
-const downloadStarted = ref(false)
+const secondsLeft = ref(TEACHER_DOWNLOAD_COUNTDOWN_SECONDS);
+const downloadStarted = ref(false);
 
-let timer: ReturnType<typeof setInterval> | null = null
+let timer: ReturnType<typeof setInterval> | null = null;
 
 const progress = computed(() => {
-  const total = TEACHER_DOWNLOAD_COUNTDOWN_SECONDS
-  return ((total - secondsLeft.value) / total) * 100
-})
+  const total = TEACHER_DOWNLOAD_COUNTDOWN_SECONDS;
+  return ((total - secondsLeft.value) / total) * 100;
+});
 
-const countdownLabel = computed(() => String(Math.max(secondsLeft.value, 0)))
+const countdownLabel = computed(() => String(Math.max(secondsLeft.value, 0)));
 
 function triggerDownload() {
-  if (downloadStarted.value) return
-  downloadStarted.value = true
+  if (downloadStarted.value) return;
+  downloadStarted.value = true;
 
-  const link = document.createElement('a')
-  link.href = TEACHER_APP_DOWNLOAD_URL
-  link.target = '_blank'
-  link.rel = 'noopener noreferrer'
-  document.body.appendChild(link)
-  link.click()
-  document.body.removeChild(link)
+  const link = document.createElement("a");
+  link.href = TEACHER_APP_DOWNLOAD_URL;
+  link.target = "_blank";
+  link.rel = "noopener noreferrer";
+  document.body.appendChild(link);
+  link.click();
+  document.body.removeChild(link);
 }
 
 function skipCountdown() {
   if (timer) {
-    clearInterval(timer)
-    timer = null
+    clearInterval(timer);
+    timer = null;
   }
-  secondsLeft.value = 0
-  triggerDownload()
+  secondsLeft.value = 0;
+  triggerDownload();
 }
 
 function startCountdown() {
-  const prefersReducedMotion = window.matchMedia('(prefers-reduced-motion: reduce)').matches
+  const prefersReducedMotion = window.matchMedia(
+    "(prefers-reduced-motion: reduce)",
+  ).matches;
   if (prefersReducedMotion) {
-    secondsLeft.value = 0
-    triggerDownload()
-    return
+    secondsLeft.value = 0;
+    triggerDownload();
+    return;
   }
 
   timer = setInterval(() => {
     if (secondsLeft.value > 0) {
-      secondsLeft.value -= 1
+      secondsLeft.value -= 1;
     }
     if (secondsLeft.value <= 0) {
-      if (timer) clearInterval(timer)
-      timer = null
-      triggerDownload()
+      if (timer) clearInterval(timer);
+      timer = null;
+      triggerDownload();
     }
-  }, 1000)
+  }, 1000);
 }
 
-onMounted(startCountdown)
+onMounted(startCountdown);
 onUnmounted(() => {
-  if (timer) clearInterval(timer)
-})
+  if (timer) clearInterval(timer);
+});
 </script>
 
 <template>
   <div class="min-h-screen relative overflow-hidden flex flex-col">
-    <div class="absolute inset-0 bg-gradient-to-br from-bg-soft via-white to-indigo-50/80" />
-    <div class="absolute top-16 -left-24 w-80 h-80 rounded-full bg-primary/10 blur-3xl" />
-    <div class="absolute bottom-20 -right-32 w-96 h-96 rounded-full bg-cyan-500/10 blur-3xl" />
-
-    <header class="relative z-10 max-w-7xl mx-auto w-full px-4 sm:px-6 lg:px-8 pt-6">
-      <RouterLink
-        to="/"
-        class="inline-flex items-center gap-2 text-sm font-medium text-text-muted hover:text-primary transition-colors duration-200 cursor-pointer"
-      >
-        <ArrowLeft class="w-4 h-4" />
-        返回首页
-      </RouterLink>
-    </header>
-
-    <main class="relative z-10 flex-1 flex items-center justify-center px-4 sm:px-6 py-12">
+    <div
+      class="absolute inset-0 bg-gradient-to-br from-bg-soft via-white to-indigo-50/80"
+    />
+    <div
+      class="absolute top-16 -left-24 w-80 h-80 rounded-full bg-primary/10 blur-3xl"
+    />
+    <div
+      class="absolute bottom-20 -right-32 w-96 h-96 rounded-full bg-cyan-500/10 blur-3xl"
+    />
+    <main
+      class="relative z-10 flex-1 flex items-center justify-center px-4 sm:px-6 py-12"
+    >
       <div class="w-full max-w-lg">
-        <div class="glass-card-strong rounded-3xl p-8 sm:p-10 shadow-xl shadow-indigo-100/50 border border-white/60">
+        <div
+          class="glass-card-strong rounded-3xl p-8 sm:p-10 shadow-xl shadow-indigo-100/50 border border-white/60"
+        >
           <div class="flex flex-col items-center text-center">
             <img :src="logoImg" alt="灵犀学" class="h-10 w-auto mb-6" />
 
-            <div class="w-14 h-14 rounded-2xl bg-gradient-to-br from-cyan-50 to-teal-50 border border-cyan-500/20 flex items-center justify-center mb-5">
+            <div
+              class="w-14 h-14 rounded-2xl bg-gradient-to-br from-cyan-50 to-teal-50 border border-cyan-500/20 flex items-center justify-center mb-5"
+            >
               <Monitor class="w-7 h-7 text-cyan-600" />
             </div>
 
-            <h1 class="text-2xl sm:text-3xl font-bold text-text-heading tracking-tight">
+            <h1
+              class="text-2xl sm:text-3xl font-bold text-text-heading tracking-tight"
+            >
               灵犀学AI 教师端
             </h1>
             <p class="mt-2 text-text-muted text-sm sm:text-base">
-              {{ downloadStarted ? '下载已启动，请查看浏览器下载栏' : '即将自动开始下载，请稍候' }}
+              {{
+                downloadStarted
+                  ? "下载已启动，请查看浏览器下载栏"
+                  : "即将自动开始下载，请稍候"
+              }}
             </p>
 
-            <div class="relative my-10" aria-live="polite" :aria-label="`倒计时 ${countdownLabel} 秒`">
-              <svg class="w-36 h-36 -rotate-90" viewBox="0 0 120 120" aria-hidden="true">
-                <circle cx="60" cy="60" r="52" fill="none" stroke="currentColor" stroke-width="8" class="text-indigo-100" />
+            <div
+              class="relative my-10"
+              aria-live="polite"
+              :aria-label="`倒计时 ${countdownLabel} 秒`"
+            >
+              <svg
+                class="w-36 h-36 -rotate-90"
+                viewBox="0 0 120 120"
+                aria-hidden="true"
+              >
+                <circle
+                  cx="60"
+                  cy="60"
+                  r="52"
+                  fill="none"
+                  stroke="currentColor"
+                  stroke-width="8"
+                  class="text-indigo-100"
+                />
                 <circle
                   cx="60"
                   cy="60"
@@ -120,21 +151,38 @@ onUnmounted(() => {
                   :stroke-dashoffset="`${2 * Math.PI * 52 * (1 - progress / 100)}`"
                 />
               </svg>
-              <div class="absolute inset-0 flex flex-col items-center justify-center">
-                <span v-if="!downloadStarted" class="text-5xl font-extrabold tabular-nums gradient-text">
+              <div
+                class="absolute inset-0 flex flex-col items-center justify-center"
+              >
+                <span
+                  v-if="!downloadStarted"
+                  class="text-5xl font-extrabold tabular-nums gradient-text"
+                >
                   {{ countdownLabel }}
                 </span>
                 <CheckCircle2 v-else class="w-12 h-12 text-accent" />
-                <span class="mt-1 text-xs font-medium text-text-muted uppercase tracking-wider">
-                  {{ downloadStarted ? '已开始' : '秒后下载' }}
+                <span
+                  class="mt-1 text-xs font-medium text-text-muted uppercase tracking-wider"
+                >
+                  {{ downloadStarted ? "已开始" : "秒后下载" }}
                 </span>
               </div>
             </div>
 
-            <div class="w-full rounded-2xl bg-slate-50/80 border border-slate-200/80 px-4 py-3 text-left mb-6">
-              <p class="text-xs font-semibold text-text-muted uppercase tracking-wide mb-1">安装包信息</p>
-              <p class="text-sm font-semibold text-text-heading break-all">{{ TEACHER_APP_FILE_NAME }}</p>
-              <p class="text-xs text-text-muted mt-1">Windows 64 位 · {{ TEACHER_APP_FILE_SIZE }}</p>
+            <div
+              class="w-full rounded-2xl bg-slate-50/80 border border-slate-200/80 px-4 py-3 text-left mb-6"
+            >
+              <p
+                class="text-xs font-semibold text-text-muted uppercase tracking-wide mb-1"
+              >
+                安装包信息
+              </p>
+              <p class="text-sm font-semibold text-text-heading break-all">
+                {{ TEACHER_APP_FILE_NAME }}
+              </p>
+              <p class="text-xs text-text-muted mt-1">
+                Windows 64 位 · {{ TEACHER_APP_FILE_SIZE }}
+              </p>
             </div>
 
             <div class="flex flex-col sm:flex-row gap-3 w-full">
@@ -174,7 +222,9 @@ onUnmounted(() => {
               </RouterLink>
             </div>
 
-            <div class="mt-6 flex items-start gap-2 text-left w-full rounded-xl bg-amber-50/80 border border-amber-200/60 px-3 py-2.5">
+            <div
+              class="mt-6 flex items-start gap-2 text-left w-full rounded-xl bg-amber-50/80 border border-amber-200/60 px-3 py-2.5"
+            >
               <AlertCircle class="w-4 h-4 text-amber-600 shrink-0 mt-0.5" />
               <p class="text-xs text-amber-900/80 leading-relaxed">
                 若未弹出下载，请检查浏览器是否拦截弹窗，或点击「重新下载」。
@@ -185,4 +235,4 @@ onUnmounted(() => {
       </div>
     </main>
   </div>
-</template>
\ No newline at end of file
+</template>