style: update component styles for improved consistency and readability

src/pages/Knowledge/components/KnowledgeDocsTable.tsx

@@ -40,7 +40,7 @@ export default function KnowledgeDocsTable({
   trashIcon,
 }: KnowledgeDocsTableProps) {
   return (
-    <div className="overflow-hidden rounded-[24px] border border-black/5 bg-[#fcfcfd] dark:border-[#2a2a2d] dark:bg-[#222225]">
+    <div className="overflow-hidden rounded-2xl border border-black/5 bg-[#fcfcfd] dark:border-[#2a2a2d] dark:bg-[#222225]">
       <div className="overflow-x-auto">
         <table className="min-w-full border-collapse">
           <thead>

src/pages/Knowledge/components/KnowledgePageHeader.tsx

@@ -19,20 +19,20 @@ export default function KnowledgePageHeader({
     <div className="mb-6 flex shrink-0 flex-col justify-between gap-4 md:flex-row md:items-start">
       <div>
         <h1
-          className="mb-3 text-5xl font-normal tracking-tight text-[#171717] dark:text-[#f3f4f6] md:text-6xl"
+          className="mb-3 text-4xl font-normal tracking-tight text-[#171717] dark:text-[#f3f4f6] md:text-4xl"
           style={{ fontFamily: "Georgia, Cambria, 'Times New Roman', Times, serif" }}
         >
           {title}
         </h1>
-        <p className="text-[17px] font-medium text-[#171717]/70 dark:text-gray-400">{subtitle}</p>
+        <p className="text-[17px] text-[#171717]/70 dark:text-gray-400">{subtitle}</p>
       </div>
 
       <div className="grid gap-3 sm:grid-cols-2 md:mt-2 md:min-w-[320px]">
-        <div className="rounded-[24px] bg-[#f4f7fb] px-5 py-4 dark:bg-[#222225]">
+        <div className="rounded-3xl bg-[#f4f7fb] px-5 py-4 dark:bg-[#222225]">
           <div className="text-xs uppercase tracking-[0.18em] text-[#99A0AE] dark:text-gray-500">{documentsLabel}</div>
           <div className="mt-3 text-3xl font-semibold text-[#171717] dark:text-[#f3f4f6]">{totalCount}</div>
         </div>
-        <div className="rounded-[24px] bg-[#fff7ed] px-5 py-4 dark:bg-[#31251a]">
+        <div className="rounded-3xl bg-[#fff7ed] px-5 py-4 dark:bg-[#31251a]">
           <div className="text-xs uppercase tracking-[0.18em] text-[#6b7280] dark:text-gray-400">{storageLabel}</div>
           <div className="mt-3 text-3xl font-semibold text-[#171717] dark:text-[#f3f4f6]">{totalSize}</div>
         </div>

src/pages/Knowledge/components/KnowledgeToolbar.tsx

@@ -1,7 +1,6 @@
 import type { ReactNode } from 'react';
 
 type KnowledgeToolbarProps = {
-  description: string;
   loading: boolean;
   refreshing: boolean;
   uploading: boolean;
@@ -15,7 +14,6 @@ type KnowledgeToolbarProps = {
 };
 
 export default function KnowledgeToolbar({
-  description,
   loading,
   refreshing,
   uploading,
@@ -29,10 +27,6 @@ export default function KnowledgeToolbar({
 }: KnowledgeToolbarProps) {
   return (
     <div className="mb-5 flex shrink-0 flex-col gap-4 md:flex-row md:items-center md:justify-between">
-      <p className="max-w-2xl text-sm leading-6 text-[#525866] dark:text-gray-400">
-        {description}
-      </p>
-
       <div className="flex items-center gap-3 md:mt-2">
         <button
           type="button"

src/pages/Knowledge/copy.ts

@@ -18,7 +18,6 @@ const EN_KNOWLEDGE_MESSAGES: MessageTree = {
   subtitle: 'Upload, review, and delete local documentation files stored in the knowledge directory.',
   refresh: 'Refresh',
   upload: 'Upload document',
-  uploadHint: 'This page fully replaces the previous Knowledge demo and now focuses on local docs only.',
   documentsLabel: 'Documents',
   storageLabel: 'Storage',
   emptyTitle: 'No documents yet',
@@ -59,7 +58,6 @@ const ZH_KNOWLEDGE_MESSAGES: MessageTree = {
   subtitle: '上传、查看和删除保存在知识目录中的本地文档文件。',
   refresh: '刷新',
   upload: '上传文档',
-  uploadHint: '此页面已完全替换旧 Knowledge demo，只保留本地文档管理能力。',
   documentsLabel: '文档数量',
   storageLabel: '占用空间',
   emptyTitle: '暂无文档',
@@ -100,7 +98,6 @@ const JA_KNOWLEDGE_MESSAGES: MessageTree = {
   subtitle: 'ローカルのナレッジ文書をアップロード、確認、削除できます。',
   refresh: '更新',
   upload: '文書をアップロード',
-  uploadHint: 'このページは旧 Knowledge デモを置き換え、ローカル文書管理に専念します。',
   documentsLabel: 'Documents',
   storageLabel: 'Storage',
   emptyTitle: '文書がありません',

src/pages/Knowledge/index.tsx

@@ -304,7 +304,7 @@ export default function KnowledgePage() {
 
   return (
     <section className="h-full w-full min-h-0">
-      <div className="relative flex h-full w-full overflow-hidden rounded-[16px] bg-white dark:bg-[#1b1b1d]">
+      <div className="relative flex h-full w-full overflow-hidden rounded-2xl bg-white dark:bg-[#1b1b1d]">
         {feedback ? (
           <KnowledgeFeedbackBanner className="absolute right-6 top-6 z-30" kind={feedback.kind}>
             {feedback.message}
@@ -322,7 +322,6 @@ export default function KnowledgePage() {
           />
 
           <KnowledgeToolbar
-            description={t('knowledge.uploadHint')}
             loading={loading}
             refreshing={refreshing}
             uploading={uploading}
@@ -345,7 +344,7 @@ export default function KnowledgePage() {
             ) : null}
 
             {loading && docs.length === 0 ? (
-              <div className="flex min-h-[420px] items-center justify-center rounded-[24px] border border-black/5 bg-[#fcfcfd] dark:border-[#2a2a2d] dark:bg-[#222225]">
+              <div className="flex min-h-105 items-center justify-center rounded-3xl border border-black/5 bg-[#fcfcfd] dark:border-[#2a2a2d] dark:bg-[#222225]">
                 <div className="text-center text-[#99A0AE] dark:text-gray-500">{t('knowledge.status.loading')}</div>
               </div>
             ) : docs.length === 0 ? (