diff --git a/src/components/sections/Flag.tsx b/src/components/sections/Flag.tsx
index 50265d9..5f0ca9e 100644
--- a/src/components/sections/Flag.tsx
+++ b/src/components/sections/Flag.tsx
@@ -84,10 +84,9 @@ const Flag = React.memo(({ flag, size }: FlagProps) => {
   return (
     <Box
       as="span"
-      className={`self-center flex-shrink-0 ${
+      className={`self-center flex-shrink-0 inline-flex items-center ${
         size ? `w-${size} h-${size}` : "w-6 h-6"
       }`}
-      style={{ display: "inline-flex", alignItems: "center" }}
       aria-label={altText}>
       <img
         src={imgSrc}
diff --git a/src/components/sections/StatsBar.tsx b/src/components/sections/StatsBar.tsx
index c166bdc..f70fbc0 100644
--- a/src/components/sections/StatsBar.tsx
+++ b/src/components/sections/StatsBar.tsx
@@ -62,7 +62,7 @@ export const StatsBar = ({
         return (
           displayOptions.time && (
             <div className="w-full py-1" key="time">
-              <div className="rt-Flex rt-r-fd-column rt-r-gap-2">
+              <div className="flex flex-col gap-2">
                 <label className="text-secondary-foreground text-sm">
                   当前时间
                 </label>
@@ -77,7 +77,7 @@ export const StatsBar = ({
         return (
           displayOptions.online && (
             <div className="w-full py-1" key="online">
-              <div className="rt-Flex rt-r-fd-column rt-r-gap-2">
+              <div className="flex flex-col gap-2">
                 <label className="text-secondary-foreground text-sm">
                   当前在线
                 </label>
@@ -94,7 +94,7 @@ export const StatsBar = ({
         return (
           displayOptions.regions && (
             <div className="w-full py-1" key="regions">
-              <div className="rt-Flex rt-r-fd-column rt-r-gap-2">
+              <div className="flex flex-col gap-2">
                 <label className="text-secondary-foreground text-sm">
                   点亮地区
                 </label>
@@ -109,7 +109,7 @@ export const StatsBar = ({
         return (
           displayOptions.traffic && (
             <div className="w-full py-1" key="traffic">
-              <div className="rt-Flex rt-r-fd-column rt-r-gap-2">
+              <div className="flex flex-col gap-2">
                 <label className="text-secondary-foreground text-sm">
                   流量概览
                 </label>
@@ -131,7 +131,7 @@ export const StatsBar = ({
         return (
           displayOptions.speed && (
             <div className="w-full py-1" key="speed">
-              <div className="rt-Flex rt-r-fd-column rt-r-gap-2">
+              <div className="flex flex-col gap-2">
                 <label className="text-secondary-foreground text-sm">
                   网络速率
                 </label>
diff --git a/src/components/ui/input.tsx b/src/components/ui/input.tsx
index a26324a..f91e237 100644
--- a/src/components/ui/input.tsx
+++ b/src/components/ui/input.tsx
@@ -10,7 +10,7 @@ const Input = React.forwardRef<HTMLInputElement, InputProps>(
       <input
         type={type}
         className={cn(
-          "flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-secondary-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50",
+          "flex w-full text-sm rounded-md bg-card px-3 py-2 placeholder:text-secondary-foreground disabled:cursor-not-allowed disabled:opacity-50 outline-none focus-visible:ring-0",
           className
         )}
         ref={ref}
diff --git a/src/pages/Home.tsx b/src/pages/Home.tsx
index 73f9690..fbde997 100644
--- a/src/pages/Home.tsx
+++ b/src/pages/Home.tsx
@@ -1,4 +1,4 @@
-import { useState, useMemo } from "react";
+import { useState, useMemo, useEffect, useRef } from "react";
 import { Button } from "@/components/ui/button";
 import { StatsBar } from "@/components/sections/StatsBar";
 import { NodeCard } from "@/components/sections/NodeCard";
@@ -15,10 +15,17 @@ interface HomePageProps {
   searchTerm: string;
 }
 
+const homeStateCache = {
+  selectedGroup: "所有",
+  scrollPosition: 0,
+};
+
 const HomePage: React.FC<HomePageProps> = ({ viewMode, searchTerm }) => {
   const { nodes: staticNodes, loading, getGroups } = useNodeData();
   const { liveData } = useLiveData();
-  const [selectedGroup, setSelectedGroup] = useState("所有");
+  const [selectedGroup, setSelectedGroup] = useState(
+    homeStateCache.selectedGroup
+  );
   const { enableGroupedBar, enableStatsBar, enableSwap } = useAppConfig();
   const [displayOptions, setDisplayOptions] = useState({
     time: true,
@@ -79,8 +86,37 @@ const HomePage: React.FC<HomePageProps> = ({ viewMode, searchTerm }) => {
     };
   }, [filteredNodes]);
 
+  const mainContentRef = useRef<HTMLDivElement>(null);
+
+  useEffect(() => {
+    const handleScroll = () => {
+      if (mainContentRef.current) {
+        homeStateCache.scrollPosition = mainContentRef.current.scrollTop;
+      }
+    };
+
+    const mainContentElement = mainContentRef.current;
+    mainContentElement?.addEventListener("scroll", handleScroll);
+
+    return () => {
+      mainContentElement?.removeEventListener("scroll", handleScroll);
+    };
+  }, []);
+
+  useEffect(() => {
+    if (mainContentRef.current) {
+      mainContentRef.current.scrollTop = homeStateCache.scrollPosition;
+    }
+  }, [loading]);
+
+  useEffect(() => {
+    homeStateCache.selectedGroup = selectedGroup;
+  }, [selectedGroup]);
+
   return (
-    <div className="w-[90%] max-w-screen-2xl mx-auto flex-1 flex flex-col pb-10">
+    <div
+      ref={mainContentRef}
+      className="w-[90%] max-w-screen-2xl mx-auto flex-1 flex flex-col pb-10 overflow-y-auto">
       {enableStatsBar && (
         <StatsBar
           displayOptions={displayOptions}
@@ -145,9 +181,7 @@ const HomePage: React.FC<HomePageProps> = ({ viewMode, searchTerm }) => {
           ) : (
             <div className="text-center py-12">
               <p className="text-lg font-bold">没有结果</p>
-              <p className="text-sm text-muted-foreground">
-                请尝试更改筛选条件
-              </p>
+              <p className="text-muted-foreground">请尝试更改筛选条件</p>
             </div>
           )}
         </div>
diff --git a/src/pages/instance/Instance.tsx b/src/pages/instance/Instance.tsx
index a735e20..98ada1d 100644
--- a/src/pages/instance/Instance.tsx
+++ b/src/pages/instance/Instance.tsx
@@ -50,28 +50,28 @@ const Instance = memo(({ node }: InstanceProps) => {
       </CardHeader>
       <CardContent className="grid grid-cols-1 md:grid-cols-3 lg:grid-cols-4 gap-3">
         <div className="md:col-span-2">
-          <p className="text-muted-foreground text-sm">CPU</p>
-          <p className="text-sm">{`${node.cpu_name} (x${node.cpu_cores})`}</p>
+          <p className="text-muted-foreground">CPU</p>
+          <p>{`${node.cpu_name} (x${node.cpu_cores})`}</p>
         </div>
         <div>
-          <p className="text-muted-foreground text-sm">架构</p>
-          <p className="text-sm">{node.arch}</p>
+          <p className="text-muted-foreground">架构</p>
+          <p>{node.arch}</p>
         </div>
         <div>
-          <p className="text-muted-foreground text-sm">虚拟化</p>
-          <p className="text-sm">{node.virtualization}</p>
+          <p className="text-muted-foreground">虚拟化</p>
+          <p>{node.virtualization}</p>
         </div>
         <div>
-          <p className="text-muted-foreground text-sm">GPU</p>
-          <p className="text-sm">{node.gpu_name || "N/A"}</p>
+          <p className="text-muted-foreground">GPU</p>
+          <p>{node.gpu_name || "N/A"}</p>
         </div>
         <div>
-          <p className="text-muted-foreground text-sm">操作系统</p>
-          <p className="text-sm">{node.os}</p>
+          <p className="text-muted-foreground">操作系统</p>
+          <p>{node.os}</p>
         </div>
         <div>
-          <p className="text-muted-foreground text-sm">内存</p>
-          <p className="text-sm">
+          <p className="text-muted-foreground">内存</p>
+          <p>
             {stats && isOnline
               ? `${formatBytes(stats.ram.used)} / ${formatBytes(
                   node.mem_total
@@ -80,8 +80,8 @@ const Instance = memo(({ node }: InstanceProps) => {
           </p>
         </div>
         <div>
-          <p className="text-muted-foreground text-sm">交换</p>
-          <p className="text-sm">
+          <p className="text-muted-foreground">交换</p>
+          <p>
             {stats && isOnline
               ? `${formatBytes(stats.swap.used)} / ${formatBytes(
                   node.swap_total
@@ -90,8 +90,8 @@ const Instance = memo(({ node }: InstanceProps) => {
           </p>
         </div>
         <div>
-          <p className="text-muted-foreground text-sm">磁盘</p>
-          <p className="text-sm">
+          <p className="text-muted-foreground">磁盘</p>
+          <p>
             {stats && isOnline
               ? `${formatBytes(stats.disk.used)} / ${formatBytes(
                   node.disk_total
@@ -100,12 +100,12 @@ const Instance = memo(({ node }: InstanceProps) => {
           </p>
         </div>
         <div>
-          <p className="text-muted-foreground text-sm">运行时间</p>
-          <p className="text-sm">{formatUptime(stats?.uptime || 0)}</p>
+          <p className="text-muted-foreground">运行时间</p>
+          <p>{formatUptime(stats?.uptime || 0)}</p>
         </div>
         <div>
-          <p className="text-muted-foreground text-sm">实时网络</p>
-          <p className="text-sm">
+          <p className="text-muted-foreground">实时网络</p>
+          <p>
             {stats && isOnline
               ? `↑ ${formatBytes(stats.network.up, true)} ↓ ${formatBytes(
                   stats.network.down,
@@ -115,7 +115,7 @@ const Instance = memo(({ node }: InstanceProps) => {
           </p>
         </div>
         <div>
-          <p className="text-muted-foreground text-sm">总流量</p>
+          <p className="text-muted-foreground">总流量</p>
           <div className="flex items-center gap-2">
             {node.traffic_limit !== 0 && isOnline && stats && (
               <CircleProgress
@@ -127,14 +127,14 @@ const Instance = memo(({ node }: InstanceProps) => {
               />
             )}
             <div>
-              <p className="text-sm">
+              <p>
                 {stats && isOnline
                   ? `↑ ${formatBytes(stats.network.totalUp)} ↓ ${formatBytes(
                       stats.network.totalDown
                     )}`
                   : "N/A"}
               </p>
-              <p className="text-sm">
+              <p>
                 {formatTrafficLimit(
                   node.traffic_limit,
                   node.traffic_limit_type
@@ -144,8 +144,8 @@ const Instance = memo(({ node }: InstanceProps) => {
           </div>
         </div>
         <div>
-          <p className="text-muted-foreground text-sm">负载</p>
-          <p className="text-sm">
+          <p className="text-muted-foreground">负载</p>
+          <p>
             {stats && isOnline
               ? `${stats.load.load1.toFixed(2)} | ${stats.load.load5.toFixed(
                   2
@@ -154,8 +154,8 @@ const Instance = memo(({ node }: InstanceProps) => {
           </p>
         </div>
         <div>
-          <p className="text-muted-foreground text-sm">最后上报</p>
-          <p className="text-sm">
+          <p className="text-muted-foreground">最后上报</p>
+          <p>
             {stats && isOnline
               ? new Date(stats.updated_at).toLocaleString()
               : "N/A"}
diff --git a/src/pages/instance/LoadCharts.tsx b/src/pages/instance/LoadCharts.tsx
index 59d62d0..a7764b5 100644
--- a/src/pages/instance/LoadCharts.tsx
+++ b/src/pages/instance/LoadCharts.tsx
@@ -91,7 +91,7 @@ const LoadCharts = memo(({ node, hours, liveData }: LoadChartsProps) => {
       title: "内存",
       type: "area",
       value: (
-        <Flex gap="0" direction="column" align="end" className="text-sm">
+        <Flex gap="0" direction="column" align="end">
           <label>
             {liveData?.ram?.used
               ? `${formatBytes(liveData.ram.used)} / ${formatBytes(
@@ -153,7 +153,7 @@ const LoadCharts = memo(({ node, hours, liveData }: LoadChartsProps) => {
       type: "line",
       value: (
         <>
-          <Flex gap="0" align="end" direction="column" className="text-sm">
+          <Flex gap="0" align="end" direction="column">
             <span>↑ {formatBytes(liveData?.network.up || 0)}/s</span>
             <span>↓ {formatBytes(liveData?.network.down || 0)}/s</span>
           </Flex>
@@ -182,7 +182,7 @@ const LoadCharts = memo(({ node, hours, liveData }: LoadChartsProps) => {
       title: "连接数",
       type: "line",
       value: (
-        <Flex gap="0" align="end" direction="column" className="text-sm">
+        <Flex gap="0" align="end" direction="column">
           <span>TCP: {liveData?.connections.tcp}</span>
           <span>UDP: {liveData?.connections.udp}</span>
         </Flex>