diff --git a/backend/app/api/endpoints/auth.py b/backend/app/api/endpoints/auth.py
index 0ed2ba3..01e7120 100644
--- a/backend/app/api/endpoints/auth.py
+++ b/backend/app/api/endpoints/auth.py
@@ -5,7 +5,7 @@ from typing import Tuple
 
 from fastapi import APIRouter, Depends, HTTPException, status
 from sqlalchemy.orm import Session
-
+import random
 from app.api.dependencies import get_db
 from app.core.security import (
     create_access_token,
@@ -52,10 +52,10 @@ def _normalize_email(email: str) -> str:
 def _build_verification_email(code: str, purpose_text: str, expire_minutes: int) -> str:
     return f"""
     <div style="font-family: Arial, sans-serif; line-height: 1.6; color: #222;">
-        <h2 style="margin-bottom: 12px;">InsightRadar Email Verification</h2>
-        <p>Your {purpose_text} verification code is:</p>
+        <h2 style="margin-bottom: 12px;">InsightRadar 邮箱验证</h2>
+        <p>您的{purpose_text}验证码是：</p>
         <p style="font-size: 28px; font-weight: bold; letter-spacing: 4px; color: #0b57d0;">{code}</p>
-        <p>The code is valid for {expire_minutes} minutes. Do not share it with others.</p>
+        <p>该验证码在 {expire_minutes} 分钟内有效。请勿泄露给他人。</p>
     </div>
     """
 
@@ -152,8 +152,8 @@ async def send_register_code(payload: RegisterCodeSendRequest, db: Session = Dep
 
     email_sent = await send_html_email(
         to_email=email,
-        subject="InsightRadar Registration Code",
-        html_content=_build_verification_email(code, "registration", REGISTER_CODE_EXPIRE_MINUTES),
+        subject=f"【{code}】InsightRadar 注册验证码",
+        html_content=_build_verification_email(code, "注册", REGISTER_CODE_EXPIRE_MINUTES),
     )
     if not email_sent:
         code_record.is_used = True
@@ -186,8 +186,8 @@ async def send_login_code(payload: LoginCodeSendRequest, db: Session = Depends(g
 
     email_sent = await send_html_email(
         to_email=email,
-        subject="InsightRadar Login Code",
-        html_content=_build_verification_email(code, "login", LOGIN_CODE_EXPIRE_MINUTES),
+        subject=f"【{code}】InsightRadar 登录验证码",
+        html_content=_build_verification_email(code, "登录", LOGIN_CODE_EXPIRE_MINUTES),
     )
     if not email_sent:
         code_record.is_used = True
diff --git a/backend/app/utils/email_utils.py b/backend/app/utils/email_utils.py
index 0dd94a2..5e0a9b7 100644
--- a/backend/app/utils/email_utils.py
+++ b/backend/app/utils/email_utils.py
@@ -17,7 +17,7 @@ async def send_html_email(
         to_email: str,
         subject: str,
         html_content: str,
-        sender_name: str = "AI 新闻",
+        sender_name: str = "AI 热点",
         sender_email: str = None
 ) -> bool:
     """底层纯异步发送邮件工具"""
diff --git a/frontend/src/views/DashboardView.vue b/frontend/src/views/DashboardView.vue
index c7c2e74..d8557f6 100644
--- a/frontend/src/views/DashboardView.vue
+++ b/frontend/src/views/DashboardView.vue
@@ -817,7 +817,7 @@ watch(() => route.query.event, (newId) => {
         <section v-if="stats" class="widget-panel stats-widget">
           <div class="stats-grid">
             <div class="stat-item">
-              <p class="stat-label">爬虫集群状态</p>
+              <p class="stat-label">爬虫状态</p>
               <p class="stat-value">
                 <span class="status-dot-green"></span>
                 {{ stats.active_sources }} 个源运行中
diff --git a/frontend/src/views/LoginView.vue b/frontend/src/views/LoginView.vue
index 96cda2f..d02b31c 100644
--- a/frontend/src/views/LoginView.vue
+++ b/frontend/src/views/LoginView.vue
@@ -19,6 +19,8 @@ const showPassword = ref(false)
 const errorMessage = ref('')
 const successMessage = ref('')
 const countdown = ref(0)
+const isSubmitting = ref(false)
+const isSendingCode = ref(false)
 
 const form = reactive({
   email: '',
@@ -83,6 +85,7 @@ async function handleSendLoginCode() {
     return
   }
 
+  isSendingCode.value = true
   try {
     const result = await authStore.sendLoginVerificationCode(form.email.trim())
     successMessage.value = result.message || '验证码已发送'
@@ -93,6 +96,8 @@ async function handleSendLoginCode() {
       startCooldown(retryAfter)
     }
     errorMessage.value = error instanceof Error ? error.message : '验证码发送失败，请稍后重试'
+  } finally {
+    isSendingCode.value = false
   }
 }
 
@@ -106,6 +111,7 @@ async function handleSubmit() {
     return
   }
 
+  isSubmitting.value = true
   try {
     if (loginMode.value === 'password') {
       await authStore.loginWithPassword({
@@ -123,6 +129,8 @@ async function handleSubmit() {
     await router.replace(redirect)
   } catch (error) {
     errorMessage.value = error instanceof Error ? error.message : '登录失败，请稍后重试'
+  } finally {
+    isSubmitting.value = false
   }
 }
 
@@ -146,6 +154,30 @@ onUnmounted(() => {
         <p class="brand-desc">
           聚合多平台趋势，自动完成热点归并与摘要。你可以用密码登录，也可以直接使用邮箱验证码快速登录。
         </p>
+        
+        <div class="feature-list">
+          <div class="feature-item">
+            <div class="feature-icon">🚀</div>
+            <div class="feature-text">
+              <strong>实时热搜追踪</strong>
+              <span>分钟级更新，覆盖微博、知乎、抖音等主流平台</span>
+            </div>
+          </div>
+          <div class="feature-item">
+            <div class="feature-icon">🤖</div>
+            <div class="feature-text">
+              <strong>AI 智能聚类</strong>
+              <span>自动识别同源事件，告别重复阅读的信息轰炸</span>
+            </div>
+          </div>
+          <div class="feature-item">
+            <div class="feature-icon">✨</div>
+            <div class="feature-text">
+              <strong>核心内容摘要</strong>
+              <span>一键获取事件全貌，省时省力掌握核心脉络</span>
+            </div>
+          </div>
+        </div>
       </div>
       <div class="ambient-glow"></div>
     </aside>
@@ -204,9 +236,9 @@ onUnmounted(() => {
                 placeholder="请输入密码"
                 autocomplete="current-password"
               />
-              <button type="button" class="input-action-btn" @click="showPassword = !showPassword">
+              <!-- <button type="button" class="input-action-btn" @click="showPassword = !showPassword">
                 {{ showPassword ? '隐藏' : '显示' }}
-              </button>
+              </button> -->
             </div>
           </div>
 
@@ -222,8 +254,8 @@ onUnmounted(() => {
                 placeholder="请输入 6 位验证码"
                 inputmode="numeric"
               />
-              <button type="button" class="input-action-btn" :disabled="!canSendCode" @click="handleSendLoginCode">
-                {{ countdown > 0 ? `${countdown}s` : '发送验证码' }}
+              <button type="button" class="input-action-btn" :disabled="!canSendCode || isSendingCode" @click="handleSendLoginCode">
+                {{ isSendingCode ? '发送中...' : (countdown > 0 ? `${countdown}s` : '发送验证码') }}
               </button>
             </div>
           </div>
@@ -251,7 +283,7 @@ onUnmounted(() => {
           </div>
 
           <button class="btn-primary" :disabled="authStore.loading" type="submit">
-            {{ authStore.loading ? '登录中...' : loginMode === 'password' ? '密码登录' : '邮箱验证码登录' }}
+            {{ isSubmitting ? '登录中...' : (loginMode === 'password' ? '密码登录' : '邮箱验证码登录') }}
           </button>
         </form>
 
@@ -277,13 +309,38 @@ onUnmounted(() => {
 .brand-panel {
   flex: 1;
   display: none;
-  background: linear-gradient(135deg, var(--bg-surface), var(--bg-base));
+  background: var(--bg-surface);
   border-right: 1px solid var(--border-subtle);
   padding: 80px;
   position: relative;
   overflow: hidden;
 }
 
+/* 动态网格背景 */
+.brand-panel::before {
+  content: '';
+  position: absolute;
+  top: -50%;
+  left: -50%;
+  right: -50%;
+  bottom: -50%;
+  background-image: 
+    linear-gradient(rgba(128, 128, 128, 0.15) 1px, transparent 1px),
+    linear-gradient(90deg, rgba(128, 128, 128, 0.15) 1px, transparent 1px);
+  background-size: 32px 32px;
+  background-position: center;
+  z-index: 0;
+  pointer-events: none;
+  animation: grid-move 20s linear infinite;
+  mask-image: radial-gradient(circle at center, black 40%, transparent 80%);
+  -webkit-mask-image: radial-gradient(circle at center, black 40%, transparent 80%);
+}
+
+@keyframes grid-move {
+  0% { transform: translate(0, 0); }
+  100% { transform: translate(32px, 32px); }
+}
+
 @media (min-width: 900px) {
   .brand-panel {
     display: flex;
@@ -332,6 +389,60 @@ onUnmounted(() => {
   line-height: 1.7;
   color: var(--text-secondary);
   font-weight: 500;
+  margin-bottom: 40px;
+}
+
+.feature-list {
+  display: flex;
+  flex-direction: column;
+  gap: 24px;
+  margin-top: 32px;
+}
+
+.feature-item {
+  display: flex;
+  align-items: flex-start;
+  gap: 16px;
+  padding: 16px;
+  background: rgba(255, 255, 255, 0.03);
+  border: 1px solid rgba(255, 255, 255, 0.05);
+  border-radius: var(--radius-lg);
+  transition: transform 0.3s ease, background 0.3s ease;
+}
+
+.feature-item:hover {
+  transform: translateY(-2px);
+  background: rgba(255, 255, 255, 0.06);
+}
+
+.feature-icon {
+  font-size: 24px;
+  background: rgba(255, 255, 255, 0.1);
+  width: 48px;
+  height: 48px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  border-radius: var(--radius-md);
+  flex-shrink: 0;
+}
+
+.feature-text {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+}
+
+.feature-text strong {
+  color: var(--text-primary);
+  font-size: 16px;
+  font-weight: 600;
+}
+
+.feature-text span {
+  color: var(--text-secondary);
+  font-size: 14px;
+  line-height: 1.5;
 }
 
 .ambient-glow {
diff --git a/frontend/src/views/RegisterView.vue b/frontend/src/views/RegisterView.vue
index 0eede4c..1d445e7 100644
--- a/frontend/src/views/RegisterView.vue
+++ b/frontend/src/views/RegisterView.vue
@@ -24,6 +24,8 @@ const showConfirmPassword = ref(false)
 const errorMessage = ref('')
 const successMessage = ref('')
 const countdown = ref(0)
+const isSubmitting = ref(false)
+const isSendingCode = ref(false)
 
 let countdownTimer: ReturnType<typeof setInterval> | null = null
 
@@ -71,6 +73,7 @@ async function handleSendCode() {
     errorMessage.value = '请先输入有效邮箱'
     return
   }
+  isSendingCode.value = true
   try {
     const result = await authStore.sendCode(form.email.trim())
     successMessage.value = result.message || '验证码已发送'
@@ -81,6 +84,8 @@ async function handleSendCode() {
       startCooldown(retryAfter)
     }
     errorMessage.value = error instanceof Error ? error.message : '验证码发送失败，请稍后重试'
+  } finally {
+    isSendingCode.value = false
   }
 }
 
@@ -97,6 +102,7 @@ async function handleSubmit() {
   successMessage.value = ''
   if (errorMessage.value) return
 
+  isSubmitting.value = true
   try {
     await authStore.registerAccount({
       email: form.email.trim(),
@@ -107,6 +113,8 @@ async function handleSubmit() {
     await router.replace('/')
   } catch (error) {
     errorMessage.value = error instanceof Error ? error.message : '注册失败，请稍后重试'
+  } finally {
+    isSubmitting.value = false
   }
 }
 
@@ -130,6 +138,30 @@ onUnmounted(() => {
         <p class="brand-desc">
           只需几秒钟即可创建您的专属账号，体验下一代全网事件聚合与 AI 洞察服务。
         </p>
+
+        <div class="feature-list">
+          <div class="feature-item">
+            <div class="feature-icon">🔍</div>
+            <div class="feature-text">
+              <strong>个性化兴趣订阅</strong>
+              <span>定制你的专属信息流，只看你关心的动态</span>
+            </div>
+          </div>
+          <div class="feature-item">
+            <div class="feature-icon">📩</div>
+            <div class="feature-text">
+              <strong>每日邮件简报</strong>
+              <span>定时推送当日核心热点，重要信息不遗漏</span>
+            </div>
+          </div>
+          <div class="feature-item">
+            <div class="feature-icon">📊</div>
+            <div class="feature-text">
+              <strong>多维度事件追踪</strong>
+              <span>掌握事件起因、发展脉络与各方观点</span>
+            </div>
+          </div>
+        </div>
       </div>
       <div class="ambient-glow"></div>
     </aside>
@@ -171,10 +203,10 @@ onUnmounted(() => {
               <button
                 type="button"
                 class="input-action-btn"
-                :disabled="!canSendCode"
+                :disabled="!canSendCode || isSendingCode"
                 @click="handleSendCode"
               >
-                {{ countdown > 0 ? `${countdown}s 后重发` : '获取验证码' }}
+                {{ isSendingCode ? '发送中...' : (countdown > 0 ? `${countdown}s 后重发` : '获取验证码') }}
               </button>
             </div>
           </div>
@@ -189,9 +221,9 @@ onUnmounted(() => {
                 :type="showPassword ? 'text' : 'password'"
                 placeholder="至少 8 位字符"
               />
-              <button type="button" class="input-action-btn" @click="showPassword = !showPassword">
+              <!-- <button type="button" class="input-action-btn" @click="showPassword = !showPassword">
                 {{ showPassword ? '隐藏' : '显示' }}
-              </button>
+              </button> -->
             </div>
           </div>
 
@@ -232,7 +264,7 @@ onUnmounted(() => {
           </div>
 
           <button class="btn-primary" :disabled="authStore.loading" type="submit">
-            {{ authStore.loading ? '提交中...' : '注册并登录' }}
+            {{ isSubmitting ? '提交中...' : '注册并登录' }}
           </button>
         </form>
 
@@ -258,11 +290,36 @@ onUnmounted(() => {
 .brand-panel {
   flex: 1;
   display: none;
-  background: linear-gradient(135deg, var(--bg-surface), var(--bg-base));
+  background: var(--bg-surface);
   border-right: 1px solid var(--border-subtle);
   padding: 80px;
   position: relative;
   overflow: hidden;
+  /* 确保伪元素不会遮挡内容，且以正常图层渲染 */
+  isolation: isolate;
+}
+
+/* 动态网格线背景，营造科技空间感 */
+.brand-panel::before {
+  content: "";
+  position: absolute;
+  top: -50%; left: -50%; right: -50%; bottom: -50%;
+  background-image: 
+    linear-gradient(rgba(128, 128, 128, 0.15) 1px, transparent 1px),
+    linear-gradient(90deg, rgba(128, 128, 128, 0.15) 1px, transparent 1px);
+  background-size: 32px 32px;
+  background-position: center center;
+  z-index: -1;
+  pointer-events: none;
+  /* 添加缓慢移动动画 */
+  animation: grid-move 20s linear infinite;
+  mask-image: radial-gradient(circle at center, black 40%, transparent 80%);
+  -webkit-mask-image: radial-gradient(circle at center, black 40%, transparent 80%);
+}
+
+@keyframes grid-move {
+  0% { transform: translate(0, 0); }
+  100% { transform: translate(32px, 32px); }
 }
 
 @media (min-width: 900px) {
@@ -314,6 +371,60 @@ onUnmounted(() => {
   line-height: 1.7;
   color: var(--text-secondary);
   font-weight: 500;
+  margin-bottom: 40px;
+}
+
+.feature-list {
+  display: flex;
+  flex-direction: column;
+  gap: 24px;
+  margin-top: 32px;
+}
+
+.feature-item {
+  display: flex;
+  align-items: flex-start;
+  gap: 16px;
+  padding: 16px;
+  background: rgba(255, 255, 255, 0.03);
+  border: 1px solid rgba(255, 255, 255, 0.05);
+  border-radius: var(--radius-lg);
+  transition: transform 0.3s ease, background 0.3s ease;
+}
+
+.feature-item:hover {
+  transform: translateY(-2px);
+  background: rgba(255, 255, 255, 0.06);
+}
+
+.feature-icon {
+  font-size: 24px;
+  background: rgba(255, 255, 255, 0.1);
+  width: 48px;
+  height: 48px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  border-radius: var(--radius-md);
+  flex-shrink: 0;
+}
+
+.feature-text {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+}
+
+.feature-text strong {
+  color: var(--text-primary);
+  font-size: 16px;
+  font-weight: 600;
+}
+
+.feature-text span {
+  color: var(--text-secondary);
+  font-size: 14px;
+  line-height: 1.5;
 }
 
 .ambient-glow {