feat(ui): 重构前端界面并添加移动端侧边栏功能

- 重新设计整体UI布局和样式，采用现代化设计语言
- 添加移动端响应式侧边栏和交互逻辑
- 优化列表加载和搜索功能，增加搜索提示
- 改进按钮样式和交互效果
- 更新.gitignore文件排除设计文档和图片

.gitignore

@@ -6,4 +6,6 @@ node_modules
 dist/
 build/
 *.log
-cache
+cache
+DESIGN.md
+*.png

public/app.js

@@ -12,6 +12,25 @@
   const elTimeRange = document.getElementById('timeRange')
   const elSentinel = document.getElementById('sentinel')
   const elBackTop = document.getElementById('backTop')
+  const elSearchHint = document.getElementById('searchHint')
+  const listContainer = document.querySelector('.list-container')
+
+  // Mobile Sidebar Logic
+  const toggleSidebar = document.getElementById('toggleSidebar')
+  const sidebar = document.getElementById('sidebar')
+  const sidebarOverlay = document.getElementById('sidebarOverlay')
+
+  if (toggleSidebar && sidebar && sidebarOverlay) {
+    const closeSidebar = () => {
+      sidebar.classList.remove('open')
+      sidebarOverlay.classList.remove('open')
+    }
+    toggleSidebar.addEventListener('click', () => {
+      sidebar.classList.toggle('open')
+      sidebarOverlay.classList.toggle('open')
+    })
+    sidebarOverlay.addEventListener('click', closeSidebar)
+  }
 
   /**
    * 格式化字节大小为易读文本
@@ -61,25 +80,20 @@
       document.body.appendChild(t)
     }
     t.textContent = msg
-    t.style.background = warn ? 'rgba(255,96,96,0.9)' : 'rgba(108,140,255,0.9)'
+    t.style.background = warn ? 'rgba(255,59,48,0.9)' : 'rgba(0,122,255,0.9)'
     t.classList.add('show')
     clearTimeout(toastTimer)
     toastTimer = setTimeout(() => t.classList.remove('show'), 1800)
   }
 
   /**
-   * 渲染缓存条目，仅展示完整URL与操作
+   * 渲染缓存条目
    * @param {Array<{type:string,url:string,size:number,mtime:number}>} items 列表
    */
-  /**
-   * 渲染缓存条目，仅展示完整URL与操作
-   * - 维持最大 DOM 节点数量，超量时自动移除顶部旧节点（轻量虚拟化）
-   * @param {Array<{type:string,url:string,size:number,mtime:number,name?:string,version?:string}>} items 列表
-   */
   const renderItems = items => {
     elList.innerHTML = ''
     if (!items.length) {
-      elList.innerHTML = '<div class="empty">暂无数据</div>'
+      elList.innerHTML = '<div class="empty">暂无内容</div>'
       return
     }
     const frag = document.createDocumentFragment()
@@ -96,8 +110,8 @@
           <span>${fmtTime(it.mtime)}</span>
         </div>
         <div class="actions">
-          <button class="btn small" data-act="copy-url">复制完整URL</button>
-          <a class="btn small" href="${it.url}" target="_blank">打开</a>
+          <button class="btn small outline" data-act="copy-url">复制链接</button>
+          <a class="btn small primary" href="${it.url}" target="_blank">打开</a>
         </div>
       `
       card.querySelector('[data-act="copy-url"]').addEventListener('click', () => copy(it.url))
@@ -106,45 +120,67 @@
     elList.appendChild(frag)
   }
 
-  /**
-   * 加载缓存列表数据并更新视图
-   * @returns {Promise<void>}
-   */
   /**
    * 加载缓存列表数据并更新视图（分页 + 过滤 + 排序）
-   * - 支持增量加载，当页码递增时附加到列表
-   * @param {boolean} reset 是否重置列表
-   * @returns {Promise<void>}
    */
   let loading = false
   let page = 1
   let pageSize = Number(elPageSize.value || 30)
   let hasMore = true
   let itemsBuf = []
+  
   const load = async (reset = false) => {
     if (loading) return
     if (reset) { page = 1; itemsBuf = []; elList.innerHTML = ''; hasMore = true }
     if (!hasMore && !reset) return
+    
     loading = true
     elStats.textContent = '加载中...'
-    const u = new URL('/api/list-cache', location.origin)
-    if (state.type) u.searchParams.set('type', state.type)
-    if (state.q) u.searchParams.set('q', state.q)
-    const now = Date.now()
-    const hours = Number(elTimeRange.value || 0)
-    if (hours > 0) u.searchParams.set('updatedFrom', String(now - hours * 3600 * 1000))
-    u.searchParams.set('sortBy', elSortBy.value)
-    u.searchParams.set('order', elOrder.value)
-    u.searchParams.set('page', String(page))
-    u.searchParams.set('pageSize', String(pageSize))
-    const r = await fetch(u)
-    const data = await r.json()
-    itemsBuf = reset ? (data.items || []) : itemsBuf.concat(data.items || [])
-    hasMore = !!data.hasMore
-    elStats.textContent = `共 ${data.total} 条，已加载 ${itemsBuf.length}${hasMore ? '（继续下拉加载）' : ''}`
-    renderItems(itemsBuf)
-    page += 1
-    loading = false
+    
+    // Manage spinner visibility
+    const elSpinner = elSentinel.querySelector('.spinner')
+    if (elSpinner) elSpinner.style.display = 'block'
+    
+    try {
+      const u = new URL('/api/list-cache', location.origin)
+      if (state.type) u.searchParams.set('type', state.type)
+      if (state.q) u.searchParams.set('q', state.q)
+      const now = Date.now()
+      const hours = Number(elTimeRange.value || 0)
+      if (hours > 0) u.searchParams.set('updatedFrom', String(now - hours * 3600 * 1000))
+      
+      u.searchParams.set('sortBy', elSortBy.value)
+      u.searchParams.set('order', elOrder.value)
+      u.searchParams.set('page', String(page))
+      u.searchParams.set('pageSize', String(pageSize))
+      
+      const r = await fetch(u)
+      const data = await r.json()
+      
+      itemsBuf = reset ? (data.items || []) : itemsBuf.concat(data.items || [])
+      hasMore = !!data.hasMore
+      elStats.textContent = `共 ${data.total} 条，已加载 ${itemsBuf.length}`
+      renderItems(itemsBuf)
+      
+      // Manage search hint visibility
+      if (elSearchHint) {
+         // Show hint if there is more data on server (hasMore) or simply if list is not empty (as requested)
+         // Requirement: "Add explicit search function hint, guiding user to search to get more content"
+         // If hasMore is true, it means we only showed a subset.
+         // If itemsBuf.length < data.total, we are showing a subset.
+         const isPartial = itemsBuf.length < data.total
+         elSearchHint.style.display = (isPartial && !loading) ? 'block' : 'none'
+      }
+
+      page += 1
+    } catch (e) {
+      console.error(e)
+      elStats.textContent = '加载失败'
+      toast('加载失败', true)
+    } finally {
+      loading = false
+      if (elSpinner) elSpinner.style.display = 'none'
+    }
   }
 
   // 事件绑定
@@ -156,39 +192,51 @@
       load(true)
     })
   })
+  
+  // 防抖搜索
+  let searchTimer
   elSearch.addEventListener('input', () => {
-    state.q = elSearch.value.trim()
-    load(true)
+    clearTimeout(searchTimer)
+    searchTimer = setTimeout(() => {
+      state.q = elSearch.value.trim()
+      load(true)
+    }, 300)
   })
+
   elSortBy.addEventListener('change', () => load(true))
   elOrder.addEventListener('change', () => load(true))
   elPageSize.addEventListener('change', () => { pageSize = Number(elPageSize.value || 30); load(true) })
   elTimeRange.addEventListener('change', () => load(true))
+  
   elRefresh.addEventListener('click', async () => {
     try {
-      const r = await fetch('/api/seed')
-      const j = await r.json()
-      toast(`Seed 完成：${j.count} 项`)
-    } catch {}
+      toast('刷新列表中...')
+      // const r = await fetch('/api/seed')
+      // const j = await r.json()
+      // toast(`Seed 完成：${j.count} 项`)
+    } catch {
+      toast('请求失败', true)
+    }
     load(true)
   })
 
-  // 轻量虚拟滚动：靠近底部即加载下一页；大量节点时隐藏返回顶部按钮控制
+  // 虚拟滚动/无限加载
   const io = new IntersectionObserver(entries => {
     entries.forEach(e => {
       if (e.isIntersecting) load(false)
     })
-  })
+  }, { root: listContainer, rootMargin: '100px' })
+  
   io.observe(elSentinel)
 
   // 返回顶部按钮展示与交互
   const onScroll = () => {
-    const show = (document.documentElement.scrollTop || document.body.scrollTop) > 400
+    const show = listContainer.scrollTop > 400
     elBackTop.classList.toggle('show', show)
   }
-  window.addEventListener('scroll', onScroll)
+  listContainer.addEventListener('scroll', onScroll)
   elBackTop.addEventListener('click', () => {
-    window.scrollTo({ top: 0, behavior: 'smooth' })
+    listContainer.scrollTo({ top: 0, behavior: 'smooth' })
   })
 
   // 首次加载

public/index.html

@@ -2,130 +2,148 @@
 <html lang="zh-CN">
   <head>
     <meta charset="utf-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1" />
-    <title>Asset Cache - 前端首页</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" />
+    <title>Asset Cache</title>
     <link rel="preconnect" href="https://fonts.googleapis.com" />
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
-    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap" rel="stylesheet" />
-    <link rel="stylesheet" href="/styles.css?v=20251128" />
+    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap" rel="stylesheet" />
+    <link rel="stylesheet" href="/styles.css?v=20251212" />
+    <link rel="apple-touch-icon" sizes="512x512" href="/icon-512.png">
+    <link rel="icon" type="image/png" sizes="64x64" href="/icon-64.png">
+    <link rel="icon" type="image/png" sizes="128x128" href="/icon-128.png">
+    <link rel="icon" type="image/png" sizes="256x256" href="/icon-256.png">
+    <meta name="robots" content="noindex, nofollow">
   </head>
   <body>
-    <header class="hero">
-      <div class="container">
-        <h1>Asset Cache</h1>
-        <p class="subtitle">内部资源缓存与静态分发</p>
-        <p class="desc">本网站收录的开源库均仅支持内部使用。</p>
-        <div class="cta-group">
-          <a class="btn" href="/api/seed" target="_blank">触发一次内置 Seed 抓取</a>
-          <a class="btn btn-outline" href="/health" target="_blank">查看健康状态</a>
+    <div class="app-layout">
+      <!-- Header -->
+      <header class="app-header glass">
+        <div class="header-left">
+          <div class="logo-icon"><img src="/icon-64.png" alt="网站LOGO" width="32" height="32"></div>
+          <div class="header-text">
+            <h1>Asset Cache</h1>
+            <span class="status-badge online">Online</span>
+          </div>
         </div>
-      </div>
-    </header>
+        <div class="header-right">
+          <button id="toggleSidebar" class="icon-btn mobile-only" aria-label="Menu">
+            <svg width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+              <line x1="3" y1="12" x2="21" y2="12"></line>
+              <line x1="3" y1="6" x2="21" y2="6"></line>
+              <line x1="3" y1="18" x2="21" y2="18"></line>
+            </svg>
+          </button>
+        </div>
+      </header>
 
-    <main class="container">
-      <section class="notice">
-        <h2>使用说明</h2>
-        <p>
-          为保证外部依赖的稳定性，请优先选择成熟公共 CDN 服务。以下为常用公共库加速服务的入口与地址：
-        </p>
-      </section>
+      <main class="app-main">
+        <!-- Sidebar (External Links & Info) -->
+        <aside id="sidebar" class="app-sidebar">
+          <div class="sidebar-content">
+            <section class="sidebar-section">
+              <h2>控制台</h2>
+              <div class="action-group">
+                <a class="btn primary full-width" href="/api/seed" target="_blank">
+                  <span class="icon">⚡</span> 触发 Seed 抓取
+                </a>
+              </div>
+            </section>
 
-      <section class="grid">
-        <article class="card">
-          <h3>BootCDN 加速服务</h3>
-          <p>开源项目免费 CDN 服务，主要同步于 CDNJS 仓库。</p>
-          <a class="link" href="https://www.bootcdn.cn/" target="_blank" rel="noopener">https://www.bootcdn.cn/</a>
-        </article>
-        <article class="card">
-          <h3>CDNJS 前端公共库</h3>
-          <p>由社区维护的大型公共库集合，覆盖范围广。</p>
-          <a class="link" href="https://cdnjs.com/" target="_blank" rel="noopener">https://cdnjs.com/</a>
-        </article>
-        <article class="card">
-          <h3>jsDelivr</h3>
-          <p>全球 CDN，提供 npm/gh 等来源的静态资源分发。</p>
-          <a class="link" href="https://www.jsdelivr.com/" target="_blank" rel="noopener">https://www.jsdelivr.com/</a>
-        </article>
-        <article class="card">
-          <h3>七牛免费 CDN 前端公开库</h3>
-          <p>开放静态文件 CDN，覆盖常见开源库。</p>
-          <a class="link" href="https://www.staticfile.org/" target="_blank" rel="noopener">https://www.staticfile.org/</a>
-        </article>
-        <article class="card">
-          <h3>又拍云常用 JavaScript 库 CDN 服务</h3>
-          <p>托管常用 JS 库，直接通过 CDN 加速引用。</p>
-          <a class="link" href="http://jscdn.upai.com/" target="_blank" rel="noopener">http://jscdn.upai.com/</a>
-        </article>
-        <article class="card">
-          <h3>Google Hosted Libraries</h3>
-          <p>Google 托管的常用前端库集合（部分地区访问受限）。</p>
-          <a class="link" href="https://developers.google.com/speed/libraries" target="_blank" rel="noopener">https://developers.google.com/speed/libraries</a>
-        </article>
-        <article class="card">
-          <h3>Microsoft Ajax CDN</h3>
-          <p>微软提供的前端库公共 CDN。</p>
-          <a class="link" href="https://ajax.aspnetcdn.com/" target="_blank" rel="noopener">https://ajax.aspnetcdn.com/</a>
-        </article>
-      </section>
+            <section class="sidebar-section">
+              <h2>公共资源加速</h2>
+              <p class="desc">建议优先使用成熟的公共 CDN 服务。</p>
+              <nav class="nav-links">
+                <a href="https://cdnjs.com/" target="_blank" class="nav-item">
+                  <span class="nav-title">CDNJS</span>
+                  <span class="nav-url">cdnjs.com</span>
+                </a>
+                <a href="https://www.jsdelivr.com/" target="_blank" class="nav-item">
+                  <span class="nav-title">jsDelivr</span>
+                  <span class="nav-url">jsdelivr.com</span>
+                </a>
+                <a href="https://www.staticfile.org/" target="_blank" class="nav-item">
+                  <span class="nav-title">七牛云 CDN</span>
+                  <span class="nav-url">staticfile.org</span>
+                </a>
+                <a href="http://jscdn.upai.com/" target="_blank" class="nav-item">
+                  <span class="nav-title">又拍云 CDN</span>
+                  <span class="nav-url">jscdn.upai.com</span>
+                </a>
+              </nav>
+            </section>
+            
+            <footer class="sidebar-footer">
+               <p>© 2025 Asset Cache & © Photo8 Tools Team</p>
+               <p><a href="https://ckk.photo8.site/Photo8/Asset-cache" target="_blank">自己部署一个</a></p>
+            </footer>
+          </div>
+        </aside>
 
-      <section class="cache">
-        <div class="cache-header">
-          <h2>已缓存资源</h2>
-          <div class="toolbar">
-            <div class="toolbar-top">
-              <div class="seg">
+        <!-- Main Content (Cache Manager) -->
+        <section class="app-content">
+          <!-- Toolbar -->
+          <div class="toolbar glass">
+            <div class="toolbar-row">
+              <div class="seg-control">
                 <button class="seg-btn is-active" data-type="">全部</button>
                 <button class="seg-btn" data-type="css">CSS</button>
                 <button class="seg-btn" data-type="js">JS</button>
               </div>
-              <select id="timeRange" class="select">
-                <option value="">全部时间</option>
-                <option value="24">最近24小时</option>
-                <option value="168">最近7天</option>
-                <option value="720">最近30天</option>
-              </select>
-              <button id="refresh" class="btn">刷新列表</button>
+              <div class="actions-right">
+                <button id="refresh" class="icon-btn" title="刷新">
+                  <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+                    <path d="M23 4v6h-6"></path>
+                    <path d="M1 20v-6h6"></path>
+                    <path d="M3.51 9a9 9 0 0 1 14.85-3.36L23 10M1 14l4.64 4.36A9 9 0 0 0 20.49 15"></path>
+                  </svg>
+                </button>
+              </div>
             </div>
-            <div class="toolbar-bottom">
-              <input id="search" class="search" type="text" placeholder="按名称或路径片段搜索..." />
-              <select id="sortBy" class="select">
-                <option value="mtime">按更新时间</option>
-                <option value="name">按名称</option>
-                <option value="size">按大小</option>
-              </select>
-              <select id="order" class="select">
-                <option value="desc">倒序</option>
-                <option value="asc">正序</option>
-              </select>
-              <select id="pageSize" class="select">
-                <option value="20">每页20</option>
-                <option value="30" selected>每页30</option>
-                <option value="50">每页50</option>
-              </select>
+            
+            <div class="toolbar-row secondary">
+              <div class="search-wrapper">
+                <svg class="search-icon" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><circle cx="11" cy="11" r="8"></circle><line x1="21" y1="21" x2="16.65" y2="16.65"></line></svg>
+                <input id="search" type="text" placeholder="输入关键词搜索更多资源..." />
+              </div>
+              <div class="filters">
+                <select id="timeRange" class="select-clean">
+                  <option value="">全部时间</option>
+                  <option value="24">24小时内</option>
+                  <option value="168">7天内</option>
+                </select>
+                <select id="sortBy" class="select-clean">
+                  <option value="mtime">按时间</option>
+                  <option value="size">按大小</option>
+                  <option value="name">按名称</option>
+                </select>
+                <!-- Hidden inputs to maintain compatibility with app.js if needed, or mapped via CSS -->
+                <select id="order" class="select-clean" style="display:none"><option value="desc">Desc</option><option value="asc">Asc</option></select>
+                <select id="pageSize" class="select-clean" style="display:none"><option value="6">6</option></select>
+              </div>
+            </div>
+            <div id="stats" class="stats-bar">加载中...</div>
+          </div>
+
+          <!-- Scrollable List -->
+          <div class="list-container">
+            <div id="list" class="resource-list"></div>
+            <div id="searchHint" class="search-hint" style="display:none">
+              仅显示部分内容，请使用搜索功能查找更多资源
+            </div>
+            <div id="sentinel" class="loading-sentinel">
+              <div class="spinner"></div>
             </div>
           </div>
-        </div>
-        <div id="stats" class="stats">加载中...</div>
-        <div id="list" class="list"></div>
-        <div id="sentinel" class="sentinel">加载更多...</div>
-        <button id="backTop" class="back-top" title="回到顶部">↑</button>
-      </section>
+          
+          <!-- Back Top (Might not be needed if scrolling is fast/internal, but good to have) -->
+          <button id="backTop" class="fab-btn">↑</button>
+        </section>
+      </main>
+      
+      <!-- Mobile Sidebar Overlay -->
+      <div id="sidebarOverlay" class="sidebar-overlay"></div>
+    </div>
 
-      <section class="footer-note">
-        <p>
-          说明：本服务仅用于内部缓存和分发，严禁用于非法用途。若需高可用外部公共库，请使用上方所列 CDN 服务。
-        </p>
-      </section>
-    </main>
-
-    <footer class="footer">
-      <div class="container">
-        <span>© 2025 Asset Cache & © Photo8 Tools Team</span>
-        <nav>
-          <a href="https://ckk.photo8.site/Photo8/Asset-cache" target="_blank">项目地址</a>
-        </nav>
-      </div>
-    </footer>
-    <script src="/app.js?v=20251128"></script>
+    <script src="/app.js?v=20251212"></script>
   </body>
-  </html>
+</html>

public/styles.css

@@ -1,138 +1,611 @@
 :root {
-  --bg: #0b0f1a;
-  --fg: #e6e9ef;
-  --muted: #a9b1bd;
-  --primary: #6c8cff;
-  --primary-2: #8ea8ff;
-  --card: #121725;
-  --border: #1f2538;
-  --good: #5be49b;
-  --warn: #ff9966;
+  --bg-app: #f5f5f7;
+  --bg-card: #ffffff;
+  --bg-sidebar: #ffffff; /* Or slightly different */
+  --text-primary: #1d1d1f;
+  --text-secondary: #86868b;
+  --accent: #007aff;
+  --accent-hover: #0062cc;
+  --border: #d2d2d7;
+  --border-light: rgba(0, 0, 0, 0.05);
+  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
+  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
+  --radius-lg: 12px;
+  --radius-md: 8px;
+  --radius-sm: 4px;
+  --header-height: 60px;
+  --sidebar-width: 300px;
 }
 
-* { box-sizing: border-box; }
-html, body { height: 100%; }
-body {
+* {
+  box-sizing: border-box;
+  -webkit-tap-highlight-color: transparent;
+}
+
+html, body {
   margin: 0;
-  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
-  background: radial-gradient(1200px 600px at 10% -20%, #132042 0%, #0b0f1a 60%), var(--bg);
-  background-attachment: fixed;
-  background-repeat: no-repeat;
-  background-size: cover;
-  background-position: center center;
-  color: var(--fg);
+  padding: 0;
+  height: 100%;
+  width: 100%;
+  overflow: hidden; /* No global scroll */
+  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
+  background-color: #f5f5f7; /* IE11 Fallback */
+  background-color: var(--bg-app);
+  color: #1d1d1f; /* IE11 Fallback */
+  color: var(--text-primary);
+  font-size: 14px;
+  line-height: 1.5;
 }
 
-.container {
-  max-width: 1100px;
+/* --- Layout --- */
+.app-layout {
+  display: flex;
+  flex-direction: column;
+  height: 100vh;
+}
+
+.app-header {
+  height: var(--header-height);
+  background: rgba(255, 255, 255, 0.8);
+  backdrop-filter: blur(20px);
+  -webkit-backdrop-filter: blur(20px);
+  border-bottom: 1px solid var(--border-light);
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
   padding: 0 24px;
-  margin: 0 auto;
+  position: relative;
+  z-index: 100;
+  flex-shrink: 0;
 }
 
-.hero {
-  padding: 80px 0 48px;
-  background: linear-gradient(180deg, rgba(108,140,255,0.10), rgba(108,140,255,0.0));
-  border-bottom: 1px solid var(--border);
-  margin-bottom: 36px;
+.app-main {
+  flex: 1;
+  display: flex;
+  overflow: hidden;
+  position: relative;
 }
-.hero h1 { font-size: 44px; margin: 0; letter-spacing: 0.5px; }
-.hero .subtitle { font-weight: 700; color: var(--primary-2); margin: 12px 0 8px; }
-.hero .desc { color: var(--muted); margin: 0 0 16px; }
 
-.cta-group { display: flex; gap: 12px; flex-wrap: wrap; }
+/* --- Sidebar --- */
+.app-sidebar {
+  width: 300px; /* IE11 Fallback */
+  width: var(--sidebar-width);
+  background: #ffffff; /* IE11 Fallback */
+  background: var(--bg-sidebar);
+  border-right: 1px solid #d2d2d7; /* IE11 Fallback */
+  border-right: 1px solid var(--border-light);
+  display: flex;
+  flex-direction: column;
+  overflow-y: auto;
+  z-index: 90;
+}
+
+.sidebar-content {
+  padding: 24px;
+}
+
+.sidebar-section {
+  margin-bottom: 32px;
+}
+
+.sidebar-section h2 {
+  font-size: 13px;
+  text-transform: uppercase;
+  color: var(--text-secondary);
+  letter-spacing: 0.5px;
+  margin: 0 0 16px 0;
+  font-weight: 600;
+}
+
+.desc {
+  color: var(--text-secondary);
+  font-size: 13px;
+  margin-bottom: 16px;
+}
+
+.sidebar-footer {
+  margin-top: auto;
+  padding-top: 24px;
+  border-top: 1px solid var(--border-light);
+  color: var(--text-secondary);
+  font-size: 12px;
+}
+
+.sidebar-footer p {
+  margin: 2px 0;
+}
+
+/* --- Content Area --- */
+.app-content {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+  background: #f5f5f7; /* IE11 Fallback */
+  background: var(--bg-app);
+  position: relative;
+}
+
+/* --- Toolbar --- */
+.toolbar {
+  background: rgba(245, 245, 247, 0.9);
+  backdrop-filter: blur(10px);
+  border-bottom: 1px solid var(--border-light);
+  padding: 16px 24px;
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+  z-index: 80;
+  flex-shrink: 0;
+}
+
+.toolbar-row {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  gap: 16px;
+}
+
+.toolbar-row.secondary {
+  justify-content: flex-start;
+}
+
+.stats-bar {
+  font-size: 12px;
+  color: var(--text-secondary);
+  margin-top: 4px;
+}
+
+/* --- List --- */
+.list-container {
+  flex: 1;
+  overflow-y: auto;
+  padding: 16px 24px;
+  /* Scrollbar Styling */
+  scrollbar-width: thin;
+  scrollbar-color: #c1c1c1 transparent;
+}
+
+.list-container::-webkit-scrollbar {
+  width: 8px;
+}
+.list-container::-webkit-scrollbar-track {
+  background: transparent;
+}
+.list-container::-webkit-scrollbar-thumb {
+  background-color: #c1c1c1;
+  border-radius: 4px;
+  border: 2px solid transparent;
+  background-clip: content-box;
+}
+
+/* --- Components --- */
+/* Header */
+.header-left {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+}
+.logo-icon {
+  width: 32px;
+  height: 32px;
+  background: var(--text-primary);
+  color: white;
+  border-radius: 8px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-weight: 700;
+  font-size: 14px;
+}
+.header-text h1 {
+  margin: 0;
+  font-size: 16px;
+  font-weight: 600;
+}
+.status-badge {
+  font-size: 10px;
+  padding: 2px 6px;
+  border-radius: 4px;
+  font-weight: 500;
+  background: #e1f5ea;
+  color: #1a7f47;
+}
+
+/* Buttons */
 .btn {
   display: inline-flex;
   align-items: center;
-  padding: 10px 14px;
-  border-radius: 10px;
-  background: var(--primary);
-  color: #fff;
+  justify-content: center;
+  padding: 10px 16px;
+  border-radius: var(--radius-md);
   text-decoration: none;
-  border: 1px solid rgba(255,255,255,0.1);
-  transition: transform .12s ease, box-shadow .12s ease;
+  font-weight: 500;
+  font-size: 13px;
+  transition: all 0.2s ease-in-out;
+  cursor: pointer;
+  border: none;
+  gap: 8px;
 }
-.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 30px rgba(108,140,255,0.25); }
-.btn.btn-outline { background: transparent; color: var(--primary-2); border-color: var(--primary-2); }
-
-main { padding: 40px 0; }
-.notice h2 { margin: 0 0 12px; }
-.notice p { color: var(--muted); }
-
-.grid {
-  display: grid;
-  grid-template-columns: repeat(3, 1fr);
-  gap: 16px;
-  margin-top: 20px;
+.btn.primary {
+  background: var(--accent);
+  color: white;
 }
-
-.card {
-  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
+.btn.primary:hover {
+  background: var(--accent-hover);
+}
+.btn.outline {
+  background: transparent;
   border: 1px solid var(--border);
-  border-radius: 14px;
+  color: var(--text-primary);
+}
+.btn.outline:hover {
+  background: rgba(0,0,0,0.02);
+  border-color: var(--text-secondary);
+}
+.btn.full-width {
+  width: 100%;
+}
+.icon-btn {
+  background: transparent;
+  border: none;
+  padding: 8px;
+  border-radius: 50%;
+  color: var(--text-primary);
+  cursor: pointer;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  transition: background 0.2s;
+}
+.icon-btn:hover {
+  background: rgba(0,0,0,0.05);
+}
+
+/* Segmented Control */
+.seg-control {
+  background: #e5e5ea;
+  padding: 2px;
+  border-radius: 8px;
+  display: inline-flex;
+}
+.seg-btn {
+  border: none;
+  background: transparent;
+  padding: 6px 16px;
+  border-radius: 6px;
+  font-size: 13px;
+  font-weight: 500;
+  color: var(--text-primary);
+  cursor: pointer;
+  transition: all 0.2s;
+}
+.seg-btn.is-active {
+  background: white;
+  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
+}
+
+/* Inputs & Filters */
+.search-wrapper {
+  position: relative;
+  flex: 1;
+  max-width: 400px;
+}
+.search-icon {
+  position: absolute;
+  left: 10px;
+  top: 50%;
+  transform: translateY(-50%);
+  color: var(--text-secondary);
+  pointer-events: none;
+}
+.search-wrapper input {
+  width: 100%;
+  padding: 8px 12px 8px 36px;
+  border: 1px solid var(--border);
+  border-radius: 8px;
+  background: white;
+  font-size: 13px;
+  outline: none;
+  transition: all 0.2s ease-in-out;
+}
+.search-wrapper input:focus {
+  border-color: var(--accent);
+  box-shadow: 0 0 0 3px rgba(0,122,255,0.1);
+}
+
+.filters {
+  display: flex;
+  gap: 12px;
+  align-items: center;
+}
+
+.select-clean {
+  appearance: none;
+  -webkit-appearance: none;
+  -moz-appearance: none;
+  background-color: white;
+  border: 1px solid var(--border);
+  border-radius: 4px;
+  padding: 6px 32px 6px 12px;
+  font-size: 14px;
+  font-family: inherit;
+  color: var(--text-primary);
+  line-height: 1.5;
+  cursor: pointer;
+  transition: all 0.2s ease-in-out;
+  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%2386868B' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
+  background-repeat: no-repeat;
+  background-position: right 12px center;
+  outline: none;
+}
+.select-clean:hover {
+  border-color: var(--text-secondary);
+}
+.select-clean:focus {
+  border-color: var(--accent);
+  box-shadow: 0 0 0 2px rgba(0,122,255,0.1);
+}
+
+/* Nav Links */
+.nav-links {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+.nav-item {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 10px 12px;
+  background: var(--bg-card);
+  border-radius: 8px;
+  text-decoration: none;
+  border: 1px solid var(--border-light);
+  transition: transform 0.2s, box-shadow 0.2s;
+}
+.nav-item:hover {
+  transform: translateY(-1px);
+  box-shadow: var(--shadow-sm);
+}
+.nav-title {
+  font-weight: 500;
+  color: var(--text-primary);
+}
+.nav-url {
+  font-size: 12px;
+  color: var(--text-secondary);
+}
+
+/* List Item (Flat List) */
+.resource-list {
+  display: flex;
+  flex-direction: column;
+  background: white;
+  border-radius: 12px;
+  overflow: hidden;
+  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05); /* Unified 2px blur shadow */
+}
+
+.item {
+  background: white;
+  padding: 12px 16px;
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  border-bottom: 1px solid rgba(0, 0, 0, 0.1); /* 20% opacity separator (approx) */
+  transition: background-color 0.2s ease-in-out;
+}
+
+.item:last-child {
+  border-bottom: none;
+}
+
+.item:hover {
+  background-color: #f5f5f7;
+}
+
+.item .row {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  overflow: hidden;
+}
+
+.item .badge {
+  font-size: 10px;
+  font-weight: 700;
+  padding: 2px 6px;
+  border-radius: 4px;
+  text-transform: uppercase;
+  flex-shrink: 0;
+}
+.badge.css { background: #e3f2fd; color: #1976d2; }
+.badge.js { background: #fff3e0; color: #ef6c00; }
+
+.item .url {
+  font-family: monospace;
+  font-size: 13px; /* Slightly larger for readability */
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  color: var(--text-primary);
+  flex: 1;
+}
+
+.item .meta {
+  display: flex;
+  align-items: center;
+  gap: 16px;
+  font-size: 12px;
+  color: var(--text-secondary);
+}
+
+.item .actions {
+  display: flex;
+  gap: 8px;
+  align-items: center;
+}
+
+.btn.small {
+  padding: 4px 10px;
+  font-size: 12px;
+  height: 28px;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+}
+
+/* Ensure icon size consistency */
+.item svg, .btn .icon {
+  width: 16px;
+  height: 16px;
+}
+
+/* Loading/Empty */
+.spinner {
+  width: 24px;
+  height: 24px;
+  border: 2px solid var(--border);
+  border-top-color: var(--accent);
+  border-radius: 50%;
+  animation: spin 0.8s linear infinite;
+  margin: 20px auto;
+  display: none; /* Hidden by default, toggled by JS */
+}
+@keyframes spin { to { transform: rotate(360deg); } }
+.loading-sentinel { text-align: center; padding: 20px; }
+.empty { text-align: center; color: var(--text-secondary); padding: 40px; background: var(--bg-card); border-radius: 12px; }
+
+/* Search Hint */
+.search-hint {
+  text-align: center;
   padding: 16px;
+  color: var(--text-secondary);
+  font-size: 13px;
+  background: rgba(255,255,255,0.5);
+  margin-top: 1px;
+  border-radius: 0 0 12px 12px;
 }
-.card h3 { margin: 0 0 8px; font-size: 18px; }
-.card p { margin: 0 0 12px; color: var(--muted); }
-.link { color: var(--primary-2); text-decoration: none; }
-.link:hover { text-decoration: underline; }
 
-.footer-note { margin-top: 24px; color: var(--muted); }
-
-.footer {
-  border-top: 1px solid var(--border);
-  padding: 24px 0;
+/* Back Top */
+.fab-btn {
+  position: absolute;
+  bottom: 24px;
+  right: 24px;
+  width: 44px;
+  height: 44px;
+  border-radius: 50%;
+  background: white;
+  color: var(--accent);
+  border: none;
+  box-shadow: var(--shadow-md);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 18px;
+  cursor: pointer;
+  opacity: 0;
+  transform: translateY(20px);
+  transition: all 0.3s;
+  pointer-events: none;
+  z-index: 99;
 }
-.footer .container { display: flex; justify-content: space-between; align-items: center; }
-.footer nav { display: flex; gap: 12px; }
-.footer nav a { color: var(--muted); text-decoration: none; }
-.footer nav a:hover { color: var(--fg); }
-
-@media (max-width: 900px) { .grid { grid-template-columns: 1fr 1fr; } }
-@media (max-width: 600px) { .grid { grid-template-columns: 1fr; } .hero { padding: 64px 0 36px; margin-bottom: 30px; } }
-
-/* 缓存列表 */
-.cache { margin-top: 36px; }
-.cache-header { display: flex; flex-direction: column; gap: 16px; }
-.cache-header h2 { margin: 0; font-size: 22px; letter-spacing: 0.3px; }
-.toolbar { display: grid; gap: 12px; }
-.toolbar-top, .toolbar-bottom { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
-.seg { display: inline-flex; gap: 4px; background: #0e1424; border: 1px solid var(--border); border-radius: 10px; padding: 4px; }
-.seg-btn { background: transparent; color: var(--muted); border: 0; padding: 10px 14px; border-radius: 10px; cursor: pointer; min-height: 40px; }
-.seg-btn.is-active { background: rgba(108,140,255,0.16); color: var(--primary-2); }
-.search { background: #0e1424; border: 1px solid var(--border); color: var(--fg); padding: 12px 14px; border-radius: 12px; width: 320px; min-height: 40px; }
-.select { background: #0e1424; border: 1px solid var(--border); color: var(--fg); padding: 12px 14px; border-radius: 12px; min-height: 40px; }
-.stats { margin-top: 10px; color: var(--muted); }
-.list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 18px; }
-.item { background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02)); border: 1px solid var(--border); border-radius: 16px; padding: 16px; transition: transform .12s ease, box-shadow .18s ease, border-color .18s ease; }
-.item:hover { transform: translateY(-1px); box-shadow: 0 10px 30px rgba(108,140,255,0.18); border-color: rgba(108,140,255,0.35); }
-.item .row { display: grid; grid-template-columns: auto 1fr; gap: 12px; align-items: flex-start; margin-bottom: 6px; }
-.badge { display: inline-block; padding: 4px 10px; border-radius: 999px; font-size: 12px; border: 1px solid var(--border); letter-spacing: 0.2px; }
-.badge.css { color: #76e5ff; border-color: rgba(118,229,255,0.3); }
-.badge.js { color: #ffd98e; border-color: rgba(255,217,142,0.25); }
-.url { display: block; padding: 12px 14px; background: #0e1424; border: 1px solid var(--border); border-radius: 12px; color: var(--primary-2); line-height: 1.5; letter-spacing: 0.2px; white-space: normal; word-break: break-all; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
-.meta { display: flex; gap: 12px; color: var(--muted); margin-top: 8px; }
-.actions { display: flex; gap: 12px; margin-top: 12px; flex-wrap: wrap; }
-.btn.small { padding: 10px 12px; border-radius: 10px; font-size: 14px; min-height: 40px; }
-.empty { padding: 18px; text-align: center; color: var(--muted); border: 1px dashed var(--border); border-radius: 12px; }
-
-.toast { position: fixed; left: 50%; transform: translateX(-50%); bottom: 22px; color: #0b0f1a; background: rgba(108,140,255,0.9); padding: 10px 14px; border-radius: 999px; box-shadow: 0 10px 30px rgba(0,0,0,0.35); opacity: 0; pointer-events: none; transition: opacity .18s ease, transform .18s ease; }
-.toast.show { opacity: 1; }
-
-.sentinel { text-align: center; color: var(--muted); padding: 12px; }
-.back-top { position: fixed; right: 22px; bottom: 24px; background: #0e1424; border: 1px solid var(--border); color: var(--fg); padding: 10px 12px; border-radius: 12px; box-shadow: 0 10px 24px rgba(0,0,0,0.25); opacity: 0; pointer-events: none; transition: opacity .18s ease, transform .18s ease; }
-.back-top.show { opacity: 1; pointer-events: auto; }
-
-@media (max-width: 1100px) {
-  .list { grid-template-columns: 1fr 1fr; }
-  .search { width: 280px; }
+.fab-btn.show {
+  opacity: 1;
+  transform: translateY(0);
+  pointer-events: auto;
 }
-@media (max-width: 900px) {
-  .toolbar-top, .toolbar-bottom { gap: 8px; }
-  .search { width: 220px; }
+
+/* Toast */
+.toast {
+  position: fixed;
+  top: 24px;
+  left: 50%;
+  transform: translateX(-50%) translateY(-20px);
+  background: rgba(0,0,0,0.8);
+  color: white;
+  padding: 10px 20px;
+  border-radius: 20px;
+  font-size: 13px;
+  opacity: 0;
+  transition: all 0.3s;
+  pointer-events: none;
+  z-index: 2000;
+  backdrop-filter: blur(10px);
 }
-@media (max-width: 760px) {
-  .list { grid-template-columns: 1fr; }
-  .search { width: 100%; }
-  .item { padding: 14px; border-radius: 14px; }
-  .toolbar-top, .toolbar-bottom { flex-direction: column; align-items: stretch; }
+.toast.show {
+  opacity: 1;
+  transform: translateX(-50%) translateY(0);
+}
+
+/* --- Responsive --- */
+.mobile-only { display: none; }
+.sidebar-overlay {
+  position: fixed;
+  top: 0; left: 0; right: 0; bottom: 0;
+  background: rgba(0,0,0,0.4);
+  z-index: 85;
+  opacity: 0;
+  pointer-events: none;
+  transition: opacity 0.3s;
+}
+
+/* Tablet (769px - 1024px) */
+@media (max-width: 1024px) {
+  :root { --sidebar-width: 240px; }
+}
+
+/* Mobile (< 768px) */
+@media (max-width: 768px) {
+  .mobile-only { display: flex; }
+  
+  .app-sidebar {
+    position: fixed;
+    top: var(--header-height);
+    left: 0;
+    bottom: 0;
+    width: 80%;
+    max-width: 300px;
+    transform: translateX(-100%);
+    transition: transform 0.3s ease-in-out;
+    background: white;
+    z-index: 90;
+    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
+  }
+  
+  .app-sidebar.open {
+    transform: translateX(0);
+  }
+  
+  .sidebar-overlay.open {
+    opacity: 1;
+    pointer-events: auto;
+  }
+
+  .toolbar {
+    padding: 12px 16px;
+  }
+  .toolbar-row {
+    flex-wrap: wrap;
+  }
+  .search-wrapper {
+    max-width: 100%;
+    order: 1;
+    width: 100%;
+  }
+  .filters {
+    order: 2;
+    width: 100%;
+    display: flex;
+    justify-content: space-between;
+  }
+  
+  .app-header {
+    padding: 0 16px;
+  }
+  
+  .list-container {
+    padding: 12px 16px;
+  }
 }