diff --git a/web/src/assets/index.css b/web/src/assets/index.css
index 9cd9759..5fa4ed4 100644
--- a/web/src/assets/index.css
+++ b/web/src/assets/index.css
@@ -203,6 +203,16 @@ input[type="number"]:hover::-webkit-outer-spin-button {
   scrollbar-color: oklch(0.5 0 0 / 40%) transparent;
 }
 
+/* Hide scrollbar but keep functionality */
+.hide-scrollbar::-webkit-scrollbar {
+  display: none;
+}
+
+.hide-scrollbar {
+  -ms-overflow-style: none;
+  scrollbar-width: none;
+}
+
 /* ApexCharts tooltip fix */
 .apexcharts-tooltip {
   background: transparent !important;
diff --git a/web/src/views/agents/Agents.vue b/web/src/views/agents/Agents.vue
index cd09fe4..567b899 100644
--- a/web/src/views/agents/Agents.vue
+++ b/web/src/views/agents/Agents.vue
@@ -224,16 +224,16 @@ onUnmounted(() => {
       </TabsList>
 
       <TabsContent value="agents" class="mt-4">
-        <div class="rounded-lg border bg-card overflow-x-auto">
+        <div class="rounded-lg border bg-card overflow-x-auto hide-scrollbar">
           <div class="flex items-center gap-2 sm:gap-4 px-3 sm:px-4 py-2 border-b bg-muted/50 text-xs sm:text-sm text-muted-foreground font-medium min-w-[360px]">
             <span class="w-10 sm:w-12 shrink-0">ID</span>
             <span class="w-6 shrink-0"></span>
-            <span class="flex-1 min-w-[80px] sm:w-32 sm:shrink-0 sm:flex-none">名称</span>
+            <span class="w-24 sm:w-32 shrink-0">名称</span>
             <span class="w-24 sm:w-28 shrink-0 hidden sm:block">IP</span>
             <span class="w-20 sm:w-32 shrink-0 hidden md:block">主机名</span>
             <span class="w-20 sm:w-36 shrink-0 hidden lg:block">版本</span>
             <span class="w-40 shrink-0 hidden xl:block">心跳时间</span>
-            <span class="flex-1 min-w-[140px] hidden xl:block">创建时间</span>
+            <span class="w-40 shrink-0 hidden xl:block">创建时间</span>
             <span class="w-20 sm:w-36 shrink-0">操作</span>
           </div>
           <div class="divide-y min-w-[360px]">
@@ -249,12 +249,12 @@ onUnmounted(() => {
                   <span :class="isOnline(agent) ? 'bg-green-500' : 'bg-gray-400'" class="relative inline-flex rounded-full h-2.5 w-2.5"></span>
                 </span>
               </span>
-              <span class="flex-1 min-w-[80px] sm:w-32 sm:shrink-0 sm:flex-none font-medium text-xs sm:text-sm truncate cursor-pointer hover:text-primary" @click="viewDetail(agent)" :title="agent.name">{{ agent.name }}</span>
+              <span class="w-24 sm:w-32 shrink-0 font-medium text-xs sm:text-sm truncate cursor-pointer hover:text-primary" @click="viewDetail(agent)" :title="agent.name">{{ agent.name }}</span>
               <span class="w-24 sm:w-28 shrink-0 text-xs sm:text-sm text-muted-foreground truncate hidden sm:block">{{ agent.ip || '-' }}</span>
               <span class="w-20 sm:w-32 shrink-0 text-xs sm:text-sm text-muted-foreground truncate hidden md:block">{{ agent.hostname || '-' }}</span>
               <span class="w-20 sm:w-36 shrink-0 text-xs sm:text-sm text-muted-foreground truncate hidden lg:block">{{ agent.version || '-' }}</span>
               <span class="w-40 shrink-0 text-xs sm:text-sm text-muted-foreground hidden xl:block">{{ agent.last_seen || '-' }}</span>
-              <span class="flex-1 min-w-[140px] text-xs sm:text-sm text-muted-foreground hidden xl:block">{{ agent.created_at || '-' }}</span>
+              <span class="w-40 shrink-0 text-xs sm:text-sm text-muted-foreground hidden xl:block">{{ agent.created_at || '-' }}</span>
               <span class="w-20 sm:w-36 shrink-0 flex justify-end gap-0.5 sm:gap-1">
                 <Button variant="ghost" size="icon" class="h-6 w-6 sm:h-7 sm:w-7" @click="toggleEnabled(agent)" :title="agent.enabled ? '禁用' : '启用'">
                   <Power v-if="agent.enabled" class="h-3 w-3 sm:h-3.5 sm:w-3.5 text-green-600" />
@@ -282,7 +282,7 @@ onUnmounted(() => {
       </TabsContent>
 
       <TabsContent value="regcodes" class="mt-4">
-        <div class="rounded-lg border bg-card overflow-x-auto">
+        <div class="rounded-lg border bg-card overflow-x-auto hide-scrollbar">
           <div class="flex items-center gap-2 sm:gap-4 px-3 sm:px-4 py-2 border-b bg-muted/50 text-xs sm:text-sm text-muted-foreground font-medium min-w-[500px]">
             <span class="w-6 shrink-0"></span>
             <span class="flex-1 min-w-[200px]">令牌</span>
diff --git a/web/src/views/dashboard/Dashboard.vue b/web/src/views/dashboard/Dashboard.vue
index a625fea..f3b713b 100644
--- a/web/src/views/dashboard/Dashboard.vue
+++ b/web/src/views/dashboard/Dashboard.vue
@@ -16,6 +16,8 @@ const chartDays = computed(() => isMobile.value ? 15 : 30)
 
 let lineChart: ApexCharts | null = null
 let pieChart: ApexCharts | null = null
+let themeObserver: MutationObserver | null = null
+let themeChangeTimeout: number | null = null
 
 const statItems = [
   { key: 'today_execs', label: '今日执行', icon: Play, route: '/history' },
@@ -26,6 +28,28 @@ const statItems = [
   { key: 'running', label: '正在运行', icon: Play, route: '/tasks' },
 ]
 
+const isDark = ref(document.documentElement.classList.contains('dark'))
+
+function getTextColor() {
+  return isDark.value ? '#94a3b8' : '#64748b'
+}
+
+function getGridColor() {
+  return isDark.value ? '#334155' : '#e2e8f0'
+}
+
+function handleThemeChange() {
+  const newIsDark = document.documentElement.classList.contains('dark')
+  if (newIsDark !== isDark.value) {
+    isDark.value = newIsDark
+    chartsLoaded.value = false
+    if (themeChangeTimeout) clearTimeout(themeChangeTimeout)
+    themeChangeTimeout = window.setTimeout(() => {
+      reloadCharts()
+    }, 50)
+  }
+}
+
 function navigateTo(route?: string) {
   if (route) router.push(route)
 }
@@ -48,7 +72,6 @@ async function reloadCharts() {
     pieChart.destroy()
     pieChart = null
   }
-  chartsLoaded.value = false
 
   // 重新获取数据
   const [sendStatsData, taskStatsData] = await Promise.all([
@@ -62,10 +85,23 @@ async function reloadCharts() {
     renderLineChart()
     renderPieChart()
     chartsLoaded.value = true
-  }, 100)
+  }, 50)
 }
 
 const renderLineChart = () => {
+  if (lineChart) {
+    lineChart.destroy()
+    lineChart = null
+  }
+  
+  const container = document.querySelector("#stats-chart")
+  if (!container) return
+  
+  // 清空容器
+  container.innerHTML = ''
+  
+  const textColor = getTextColor()
+  const gridColor = getGridColor()
   const options = {
     series: [
       { name: '执行总数', data: sendStats.value.map(item => item.total) },
@@ -97,7 +133,7 @@ const renderLineChart = () => {
     markers: {
       size: 6,
       colors: ['#3b82f6', '#10b981', '#ef4444'],
-      strokeColors: '#fff',
+      strokeColors: isDark.value ? '#1e293b' : '#fff',
       strokeWidth: 2,
       hover: { size: 8, sizeOffset: 3 }
     },
@@ -105,11 +141,11 @@ const renderLineChart = () => {
       categories: sendStats.value.map(item => item.day.slice(5)),
       axisBorder: { show: false },
       axisTicks: { show: false },
-      labels: { style: { colors: '#64748b', fontSize: '12px', fontFamily: 'Inter, sans-serif' } }
+      labels: { style: { colors: textColor, fontSize: '12px', fontFamily: 'Inter, sans-serif' } }
     },
     yaxis: {
       labels: {
-        style: { colors: '#64748b', fontSize: '12px', fontFamily: 'Inter, sans-serif' },
+        style: { colors: textColor, fontSize: '12px', fontFamily: 'Inter, sans-serif' },
         formatter: (val: number) => String(val),
         offsetX: -15,
         minWidth: 20
@@ -119,7 +155,7 @@ const renderLineChart = () => {
     fill: {
       type: 'gradient',
       gradient: {
-        shade: 'light',
+        shade: isDark.value ? 'dark' : 'light',
         type: 'vertical',
         shadeIntensity: 0.5,
         gradientToColors: ['#60a5fa', '#34d399', '#f87171'],
@@ -130,7 +166,7 @@ const renderLineChart = () => {
       }
     },
     grid: {
-      borderColor: '#e2e8f0',
+      borderColor: gridColor,
       strokeDashArray: 3,
       xaxis: { lines: { show: false } },
       yaxis: { lines: { show: true } },
@@ -144,13 +180,14 @@ const renderLineChart = () => {
       offsetX: -5,
       fontSize: '12px',
       fontFamily: 'Inter, sans-serif',
+      labels: { colors: textColor },
       markers: { width: 8, height: 8, radius: 4 }
     },
     tooltip: {
       enabled: true,
       shared: true,
       intersect: false,
-      theme: document.documentElement.classList.contains('dark') ? 'dark' : 'light',
+      theme: isDark.value ? 'dark' : 'light',
       style: { fontSize: '12px', fontFamily: 'Inter, sans-serif' },
       x: { show: true },
       marker: { show: true },
@@ -186,60 +223,124 @@ const renderLineChart = () => {
     },
     responsive: [{ breakpoint: 768, options: { chart: { height: 200 }, legend: { position: 'bottom', offsetY: 0 } } }]
   }
-  lineChart = new ApexCharts(document.querySelector("#stats-chart"), options)
+  lineChart = new ApexCharts(container, options)
   lineChart.render()
 }
 
 const renderPieChart = () => {
   if (taskStats.value.length === 0) return
+  
+  if (pieChart) {
+    pieChart.destroy()
+    pieChart = null
+  }
+  
+  const container = document.querySelector("#pie-chart")
+  if (!container) return
+  
+  // 清空容器
+  container.innerHTML = ''
+  
+  const totalCount = taskStats.value.reduce((sum, item) => sum + item.count, 0)
+  const textColor = getTextColor()
   const options = {
     series: taskStats.value.map(item => item.count),
     chart: {
-      type: 'pie',
-      height: 240,
+      type: 'donut',
+      height: 200,
       toolbar: { show: false },
       background: 'transparent',
       animations: {
-        enabled: true,
-        easing: 'easeinout',
-        speed: 800,
-        animateGradually: { enabled: true, delay: 150 },
-        dynamicAnimation: { enabled: true, speed: 350 }
+        enabled: false
       }
     },
     labels: taskStats.value.map(item => item.task_name),
     colors: ['#3b82f6', '#10b981', '#f59e0b', '#ef4444', '#8b5cf6', '#ec4899', '#06b6d4', '#84cc16'],
     legend: {
-      position: 'bottom',
-      fontSize: '12px',
-      fontFamily: 'Inter, sans-serif',
-      markers: { width: 8, height: 8, radius: 4 }
+      show: false
+    },
+    stroke: {
+      show: true,
+      width: 2,
+      colors: [isDark.value ? '#1e293b' : '#ffffff']
     },
     plotOptions: {
       pie: {
-        donut: { size: '0%' },
+        donut: {
+          size: '50%',
+          labels: {
+            show: true,
+            name: {
+              show: true,
+              fontSize: '12px',
+              fontFamily: 'Inter, sans-serif',
+              fontWeight: 600,
+              color: textColor,
+              offsetY: -10
+            },
+            value: {
+              show: true,
+              fontSize: '12px',
+              fontFamily: 'Inter, sans-serif',
+              fontWeight: 'bold',
+              color: textColor,
+              offsetY: 5,
+              formatter: (val: string) => val + ' 次'
+            },
+            total: {
+              show: true,
+              showAlways: false,
+              label: '总执行',
+              fontSize: '12px',
+              fontFamily: 'Inter, sans-serif',
+              fontWeight: 600,
+              color: textColor,
+              formatter: () => String(totalCount) + ' 次'
+            }
+          }
+        },
         expandOnClick: true
       }
     },
     dataLabels: {
       enabled: true,
       formatter: (val: number) => val.toFixed(1) + '%',
-      style: { fontSize: '10px', fontFamily: 'Inter, sans-serif', fontWeight: 'bold' }
+      style: { 
+        fontSize: '11px', 
+        fontFamily: 'Inter, sans-serif', 
+        fontWeight: 'bold', 
+        colors: ['#ffffff']
+      },
+      dropShadow: { 
+        enabled: true,
+        top: 1,
+        left: 1,
+        blur: 2,
+        color: '#000',
+        opacity: 0.5
+      }
     },
     tooltip: {
       enabled: true,
-      theme: document.documentElement.classList.contains('dark') ? 'dark' : 'light',
+      theme: isDark.value ? 'dark' : 'light',
       style: { fontSize: '12px', fontFamily: 'Inter, sans-serif' },
       y: { formatter: (val: number) => val + ' 次' }
     },
     responsive: [{ breakpoint: 768, options: { chart: { height: 200 }, legend: { position: 'bottom' } } }]
   }
-  pieChart = new ApexCharts(document.querySelector("#pie-chart"), options)
+  pieChart = new ApexCharts(container, options)
   pieChart.render()
 }
 
 onMounted(async () => {
   window.addEventListener('resize', handleResize)
+  
+  // 监听主题变化
+  themeObserver = new MutationObserver(() => {
+    handleThemeChange()
+  })
+  themeObserver.observe(document.documentElement, { attributes: true, attributeFilter: ['class'] })
+  
   try {
     const [statsData, sendStatsData, taskStatsData] = await Promise.all([
       api.dashboard.stats(),
@@ -259,6 +360,14 @@ onMounted(async () => {
 
 onUnmounted(() => {
   window.removeEventListener('resize', handleResize)
+  if (themeObserver) {
+    themeObserver.disconnect()
+    themeObserver = null
+  }
+  if (themeChangeTimeout) {
+    clearTimeout(themeChangeTimeout)
+    themeChangeTimeout = null
+  }
   if (lineChart) lineChart.destroy()
   if (pieChart) pieChart.destroy()
 })