diff --git a/frontend/src/index.css b/frontend/src/index.css
index 27d0a568..de1a1f0c 100644
--- a/frontend/src/index.css
+++ b/frontend/src/index.css
@@ -340,6 +340,98 @@ body {
   min-width: 100%;
 }
 
+.settings-shell,
+.settings-tabs-shell,
+.settings-tabs,
+.settings-tabs .ant-tabs-content-holder,
+.settings-tabs .ant-tabs-content,
+.settings-tabs .ant-tabs-tabpane {
+  min-width: 0;
+  min-height: 0;
+  height: 100%;
+}
+
+.settings-tabs-shell {
+  overflow: hidden;
+}
+
+.settings-tabs {
+  display: flex;
+  flex-direction: column;
+}
+
+.settings-tabs .ant-tabs-nav {
+  flex: 0 0 auto;
+  margin-bottom: 12px;
+}
+
+.settings-tabs .ant-tabs-content-holder,
+.settings-tabs .ant-tabs-content,
+.settings-tabs .ant-tabs-tabpane {
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+}
+
+.settings-tabs .ant-tabs-tabpane-hidden {
+  display: none !important;
+}
+
+.settings-tab-panel {
+  flex: 1 1 auto;
+  min-width: 0;
+  min-height: 0;
+  height: 100%;
+  display: flex;
+  flex-direction: column;
+}
+
+.settings-panel-card,
+.settings-panel-card .ant-card-body {
+  min-width: 0;
+  min-height: 0;
+  height: 100%;
+}
+
+.settings-panel-card {
+  flex: 1 1 auto;
+}
+
+.settings-panel-card .ant-card-body {
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+}
+
+.settings-panel-scroll {
+  flex: 1 1 auto;
+  min-height: 0;
+  overflow-y: auto;
+  overflow-x: hidden;
+  padding-right: 6px;
+  scrollbar-gutter: stable;
+}
+
+.settings-panel-scroll::-webkit-scrollbar {
+  width: 10px;
+}
+
+.settings-panel-scroll::-webkit-scrollbar-thumb {
+  background: rgba(148, 163, 184, 0.8);
+  border-radius: 999px;
+  border: 2px solid transparent;
+  background-clip: padding-box;
+}
+
+.settings-panel-scroll::-webkit-scrollbar-track {
+  background: transparent;
+}
+
+.settings-table-scroll-region {
+  flex: 1 1 auto;
+  overflow: hidden;
+}
+
 
 
 
diff --git a/frontend/src/pages/Settings/Settings.tsx b/frontend/src/pages/Settings/Settings.tsx
index 5679ccb6..8bdf6a5c 100644
--- a/frontend/src/pages/Settings/Settings.tsx
+++ b/frontend/src/pages/Settings/Settings.tsx
@@ -1,4 +1,4 @@
-import { useEffect, useState } from 'react'
+import { useEffect, useRef, useState } from 'react'
 import {
   Button,
   Card,
@@ -59,6 +59,8 @@ function Settings() {
   const [loading, setLoading] = useState(true)
   const [savingCollectorId, setSavingCollectorId] = useState<number | null>(null)
   const [collectors, setCollectors] = useState<CollectorSettings[]>([])
+  const collectorTableRegionRef = useRef<HTMLDivElement | null>(null)
+  const [collectorTableHeight, setCollectorTableHeight] = useState(360)
   const [systemForm] = Form.useForm<SystemSettings>()
   const [notificationForm] = Form.useForm<NotificationSettings>()
   const [securityForm] = Form.useForm<SecuritySettings>()
@@ -83,6 +85,24 @@ function Settings() {
     fetchSettings()
   }, [])
 
+  useEffect(() => {
+    const updateTableHeight = () => {
+      const regionHeight = collectorTableRegionRef.current?.offsetHeight || 0
+      setCollectorTableHeight(Math.max(220, regionHeight - 56))
+    }
+
+    updateTableHeight()
+
+    if (typeof ResizeObserver === 'undefined') {
+      return undefined
+    }
+
+    const observer = new ResizeObserver(updateTableHeight)
+    if (collectorTableRegionRef.current) observer.observe(collectorTableRegionRef.current)
+
+    return () => observer.disconnect()
+  }, [collectors.length])
+
   const saveSection = async (section: 'system' | 'notifications' | 'security', values: object) => {
     try {
       await axios.put(`/api/v1/settings/${section}`, values)
@@ -219,115 +239,142 @@ function Settings() {
 
   return (
     <AppLayout>
-      <Space direction="vertical" size={16} style={{ width: '100%' }}>
-        <div>
-          <Title level={3} style={{ marginBottom: 4 }}>系统配置中心</Title>
-          <Text type="secondary">这一页现在已经直接连接数据库配置和采集调度，不再只是演示表单。</Text>
+      <div className="page-shell settings-shell">
+        <div className="page-shell__header">
+          <div>
+            <Title level={3} style={{ marginBottom: 4 }}>系统配置中心</Title>
+            <Text type="secondary">这一页现在已经直接连接数据库配置和采集调度，不再只是演示表单。</Text>
+          </div>
         </div>
 
-        <Tabs
-          items={[
-            {
-              key: 'system',
-              label: '系统显示',
-              children: (
-                <Card loading={loading}>
-                  <Form form={systemForm} layout="vertical" onFinish={(values) => saveSection('system', values)}>
-                    <Form.Item name="system_name" label="系统名称" rules={[{ required: true, message: '请输入系统名称' }]}>
-                      <Input />
-                    </Form.Item>
-                    <Form.Item name="refresh_interval" label="默认刷新间隔(秒)">
-                      <InputNumber min={10} max={3600} style={{ width: '100%' }} />
-                    </Form.Item>
-                    <Form.Item name="data_retention_days" label="数据保留天数">
-                      <InputNumber min={1} max={3650} style={{ width: '100%' }} />
-                    </Form.Item>
-                    <Form.Item name="max_concurrent_tasks" label="最大并发任务数">
-                      <InputNumber min={1} max={50} style={{ width: '100%' }} />
-                    </Form.Item>
-                    <Form.Item name="auto_refresh" label="自动刷新" valuePropName="checked">
-                      <Switch />
-                    </Form.Item>
-                    <Button type="primary" htmlType="submit">保存系统配置</Button>
-                  </Form>
-                </Card>
-              ),
-            },
-            {
-              key: 'notifications',
-              label: '通知策略',
-              children: (
-                <Card loading={loading}>
-                  <Form form={notificationForm} layout="vertical" onFinish={(values) => saveSection('notifications', values)}>
-                    <Form.Item name="email_enabled" label="启用邮件通知" valuePropName="checked">
-                      <Switch />
-                    </Form.Item>
-                    <Form.Item name="email_address" label="通知邮箱">
-                      <Input />
-                    </Form.Item>
-                    <Form.Item name="critical_alerts" label="严重告警通知" valuePropName="checked">
-                      <Switch />
-                    </Form.Item>
-                    <Form.Item name="warning_alerts" label="警告告警通知" valuePropName="checked">
-                      <Switch />
-                    </Form.Item>
-                    <Form.Item name="daily_summary" label="每日摘要" valuePropName="checked">
-                      <Switch />
-                    </Form.Item>
-                    <Button type="primary" htmlType="submit">保存通知配置</Button>
-                  </Form>
-                </Card>
-              ),
-            },
-            {
-              key: 'security',
-              label: '安全策略',
-              children: (
-                <Card loading={loading}>
-                  <Form form={securityForm} layout="vertical" onFinish={(values) => saveSection('security', values)}>
-                    <Form.Item name="session_timeout" label="会话超时(分钟)">
-                      <InputNumber min={5} max={1440} style={{ width: '100%' }} />
-                    </Form.Item>
-                    <Form.Item name="max_login_attempts" label="最大登录尝试次数">
-                      <InputNumber min={1} max={20} style={{ width: '100%' }} />
-                    </Form.Item>
-                    <Form.Item name="password_policy" label="密码策略">
-                      <Select
-                        options={[
-                          { value: 'low', label: '简单' },
-                          { value: 'medium', label: '中等' },
-                          { value: 'high', label: '严格' },
-                        ]}
-                      />
-                    </Form.Item>
-                    <Button type="primary" htmlType="submit">保存安全配置</Button>
-                  </Form>
-                </Card>
-              ),
-            },
-            {
-              key: 'collectors',
-              label: '采集调度',
-              children: (
-                <Card loading={loading}>
-                  <div className="table-scroll-region">
-                    <Table
-                      rowKey="id"
-                      columns={collectorColumns}
-                      dataSource={collectors}
-                      pagination={false}
-                      scroll={{ x: 1200, y: 'calc(100% - 360px)' }}
-                    />
+        <div className="page-shell__body settings-tabs-shell">
+          <Tabs
+            className="settings-tabs"
+            items={[
+              {
+                key: 'system',
+                label: '系统显示',
+                children: (
+                  <div className="settings-tab-panel">
+                    <Card className="settings-panel-card" loading={loading}>
+                      <div className="settings-panel-scroll">
+                        <Form form={systemForm} layout="vertical" onFinish={(values) => saveSection('system', values)}>
+                          <Form.Item name="system_name" label="系统名称" rules={[{ required: true, message: '请输入系统名称' }]}>
+                            <Input />
+                          </Form.Item>
+                          <Form.Item name="refresh_interval" label="默认刷新间隔(秒)">
+                            <InputNumber min={10} max={3600} style={{ width: '100%' }} />
+                          </Form.Item>
+                          <Form.Item name="data_retention_days" label="数据保留天数">
+                            <InputNumber min={1} max={3650} style={{ width: '100%' }} />
+                          </Form.Item>
+                          <Form.Item name="max_concurrent_tasks" label="最大并发任务数">
+                            <InputNumber min={1} max={50} style={{ width: '100%' }} />
+                          </Form.Item>
+                          <Form.Item name="auto_refresh" label="自动刷新" valuePropName="checked">
+                            <Switch />
+                          </Form.Item>
+                          <Button type="primary" htmlType="submit">保存系统配置</Button>
+                        </Form>
+                      </div>
+                    </Card>
                   </div>
-                </Card>
-              ),
-            },
-          ]}
-        />
-      </Space>
+                ),
+              },
+              {
+                key: 'notifications',
+                label: '通知策略',
+                children: (
+                  <div className="settings-tab-panel">
+                    <Card className="settings-panel-card" loading={loading}>
+                      <div className="settings-panel-scroll">
+                        <Form form={notificationForm} layout="vertical" onFinish={(values) => saveSection('notifications', values)}>
+                          <Form.Item name="email_enabled" label="启用邮件通知" valuePropName="checked">
+                            <Switch />
+                          </Form.Item>
+                          <Form.Item name="email_address" label="通知邮箱">
+                            <Input />
+                          </Form.Item>
+                          <Form.Item name="critical_alerts" label="严重告警通知" valuePropName="checked">
+                            <Switch />
+                          </Form.Item>
+                          <Form.Item name="warning_alerts" label="警告告警通知" valuePropName="checked">
+                            <Switch />
+                          </Form.Item>
+                          <Form.Item name="daily_summary" label="每日摘要" valuePropName="checked">
+                            <Switch />
+                          </Form.Item>
+                          <Button type="primary" htmlType="submit">保存通知配置</Button>
+                        </Form>
+                      </div>
+                    </Card>
+                  </div>
+                ),
+              },
+              {
+                key: 'security',
+                label: '安全策略',
+                children: (
+                  <div className="settings-tab-panel">
+                    <Card className="settings-panel-card" loading={loading}>
+                      <div className="settings-panel-scroll">
+                        <Form form={securityForm} layout="vertical" onFinish={(values) => saveSection('security', values)}>
+                          <Form.Item name="session_timeout" label="会话超时(分钟)">
+                            <InputNumber min={5} max={1440} style={{ width: '100%' }} />
+                          </Form.Item>
+                          <Form.Item name="max_login_attempts" label="最大登录尝试次数">
+                            <InputNumber min={1} max={20} style={{ width: '100%' }} />
+                          </Form.Item>
+                          <Form.Item name="password_policy" label="密码策略">
+                            <Select
+                              options={[
+                                { value: 'low', label: '简单' },
+                                { value: 'medium', label: '中等' },
+                                { value: 'high', label: '严格' },
+                              ]}
+                            />
+                          </Form.Item>
+                          <Button type="primary" htmlType="submit">保存安全配置</Button>
+                        </Form>
+                      </div>
+                    </Card>
+                  </div>
+                ),
+              },
+              {
+                key: 'collectors',
+                label: '采集调度',
+                children: (
+                  <div className="settings-tab-panel">
+                    <Card
+                      className="settings-panel-card settings-panel-card--table"
+                      loading={loading}
+                      bodyStyle={{ flex: 1, minHeight: 0, display: 'flex', flexDirection: 'column', overflow: 'hidden' }}
+                    >
+                      <div
+                        ref={collectorTableRegionRef}
+                        className="table-scroll-region data-source-table-region settings-table-scroll-region"
+                        style={{ flex: 1, minHeight: 0, display: 'flex', flexDirection: 'column' }}
+                      >
+                        <Table
+                          rowKey="id"
+                          columns={collectorColumns}
+                          dataSource={collectors}
+                          pagination={false}
+                          scroll={{ x: 1200, y: collectorTableHeight }}
+                          virtual
+                        />
+                      </div>
+                    </Card>
+                  </div>
+                ),
+              },
+            ]}
+          />
+        </div>
+      </div>
     </AppLayout>
   )
 }
 
 export default Settings
-
diff --git a/planet.sh b/planet.sh
index 63c44dc4..8d6380f4 100755
--- a/planet.sh
+++ b/planet.sh
@@ -11,6 +11,27 @@ YELLOW='\033[1;33m'
 BLUE='\033[0;34m'
 NC='\033[0m'
 
+ensure_frontend_deps() {
+    echo -e "${BLUE}📦 检查前端依赖...${NC}"
+
+    if ! command -v bun >/dev/null 2>&1; then
+        echo -e "${RED}❌ 未找到 bun，请先安装或加载 bun 到 PATH${NC}"
+        exit 1
+    fi
+
+    cd "$SCRIPT_DIR/frontend"
+
+    if [ ! -x "$SCRIPT_DIR/frontend/node_modules/.bin/vite" ]; then
+        echo -e "${YELLOW}⚠️  前端依赖缺失，正在执行 bun install...${NC}"
+        bun install
+    fi
+
+    if [ ! -x "$SCRIPT_DIR/frontend/node_modules/.bin/vite" ]; then
+        echo -e "${RED}❌ 前端依赖安装失败，未找到 vite${NC}"
+        exit 1
+    fi
+}
+
 start() {
     echo -e "${BLUE}🚀 启动智能星球计划...${NC}"
 
@@ -25,21 +46,16 @@ start() {
     PYTHONPATH="$SCRIPT_DIR/backend" nohup python3 -m uvicorn app.main:app --host 0.0.0.0 --port 8000 --reload > /tmp/planet_backend.log 2>&1 &
     BACKEND_PID=$!
 
-    echo "    等待后端启动..."
-    for i in {1..10}; do
-        sleep 2
-        if curl -s http://localhost:8000/health > /dev/null 2>&1; then
-            echo -e "    ${GREEN}✅ 后端已就绪${NC}"
-            break
-        fi
-        if [ $i -eq 10 ]; then
-            echo -e "${RED}❌ 后端启动失败${NC}"
-            tail -10 /tmp/planet_backend.log
-            exit 1
-        fi
-    done
+    sleep 3
+
+    if ! curl -s http://localhost:8000/health > /dev/null 2>&1; then
+        echo -e "${RED}❌ 后端启动失败${NC}"
+        tail -10 /tmp/planet_backend.log
+        exit 1
+    fi
 
     echo -e "${BLUE}🌐 启动前端...${NC}"
+    ensure_frontend_deps
     pkill -f "vite" 2>/dev/null || true
     pkill -f "bun run dev" 2>/dev/null || true
     cd "$SCRIPT_DIR/frontend"