diff --git a/.github/README.md b/.github/README.md
new file mode 100644
index 0000000..f229fdf
--- /dev/null
+++ b/.github/README.md
@@ -0,0 +1,178 @@
+# LanMontainDesktop GitHub Actions CI/CD
+
+参考 ClassIsland 项目最佳实践，为 LanMontainDesktop 配置的 GitHub Actions 工作流。
+
+## 📋 工作流说明
+
+### 1. Build (`build.yml`)
+**何时运行:** 每次 push、PR、手动触发
+
+**功能:**
+- Windows: Release + Debug 配置
+- Linux: Release 配置
+- macOS: Release 配置
+- 上传编译输出 artifacts
+
+**运行时间:** ~5-10 分钟
+
+### 2. Quality Check (`code-quality.yml`)
+**何时运行:** PR 或 push
+
+**功能:**
+- 编译检查
+- 代码格式检查 (`dotnet format`)
+
+**运行时间:** ~3-5 分钟
+
+### 3. Release (`release.yml`)
+**何时运行:** Push 标签 (`v*`) 或手动触发
+
+**功能:**
+- 并行构建所有平台 (Windows x64/x86, Linux x64, macOS x64/arm64)
+- 自动创建 GitHub Release
+- 上传所有平台的可执行包
+
+**运行时间:** ~20-30 分钟
+
+**触发方式:**
+
+```bash
+# 推送标签 - 自动触发
+git tag v1.0.0
+git push origin v1.0.0
+
+# 或手动触发
+# GitHub Actions > Release > Run workflow
+# 输入: tag (例如 v1.0.0)
+```
+
+### 4. Issue Management (`issue-management.yml`)
+**何时运行:** 每天 1:30 AM UTC
+
+**功能:**
+- 标记 30 天无活动的 Issue
+- 关闭 7 天无活动的 stale Issue
+- 对 PR 同样处理
+
+---
+
+## 🚀 快速开始
+
+### 创建版本发布
+
+```bash
+# 1. 提交最后的更改
+git add .
+git commit -m "Release v1.0.0"
+
+# 2. 创建标签
+git tag v1.0.0 -m "Release version 1.0.0"
+
+# 3. 推送
+git push origin main
+git push origin v1.0.0
+
+# 4. 等待... (GitHub Actions 自动构建)
+# 约 20-30 分钟后，Release 将自动创建
+```
+
+### 查看工作流状态
+
+访问: **GitHub 项目 > Actions 标签**
+
+---
+
+## 📁 支持的平台与格式
+
+| 平台 | 架构 | 输出格式 |
+|------|------|---------|
+| Windows | x64, x86 | `.zip` |
+| Linux | x64 | `.tar.gz` |
+| macOS | x64, arm64 | `.tar.gz` |
+
+---
+
+## 🛠️ 本地构建参考
+
+### Windows
+
+```bash
+# 使用现有脚本
+.\LanMontainDesktop\scripts\package.ps1 -RuntimeIdentifier win-x64
+
+# 或用 dotnet 直接构建
+dotnet build -c Release
+dotnet publish LanMontainDesktop/LanMontainDesktop.csproj `
+    -c Release -r win-x64 -o ./publish/win-x64 `
+    --self-contained -p:PublishSingleFile=true
+```
+
+### Linux / macOS
+
+```bash
+# 使用 build 脚本
+chmod +x scripts/build.sh
+./scripts/build.sh publish --config Release --rid linux-x64
+./scripts/build.sh publish --config Release --rid osx-x64
+./scripts/build.sh publish --config Release --rid osx-arm64
+
+# 或用 dotnet 直接构建
+dotnet build -c Release
+dotnet publish LanMontainDesktop/LanMontainDesktop.csproj \
+    -c Release -r linux-x64 -o ./publish/linux-x64 \
+    --self-contained -p:PublishSingleFile=true
+```
+
+---
+
+## 📊 Actions 使用统计
+
+**免费额度:** 2000 runner-hours/月 (对大多数项目用不完)
+
+**预计使用:**
+- Build job: ~3-5 分钟 × 3 平台
+- Code quality: ~3-5 分钟
+- Release: ~25-30 分钟 × 1/周
+
+**月总计:** ~30-50 分钟 × 20+ 次 = ~600-1000 分钟 (远低于免费额度)
+
+---
+
+## 🐛 常见问题
+
+### Release 工作流不运行?
+
+检查：
+1. 标签格式是否为 `v*` (例如：`v1.0.0`)
+2. `.csproj` 文件是否有效
+3. GitHub Actions 是否已启用
+
+### 特定平台构建失败?
+
+查看 Actions 日志：
+1. **Windows**: 检查 libvlc 依赖
+2. **Linux**: 检查系统库依赖
+3. **macOS**: 检查 Xcode 工具链
+
+### 如何跳过某个工作流?
+
+在 commit 消息中添加：
+```
+[skip ci]  # 跳过所有工作流
+[skip build]  # 跳过构建
+```
+
+---
+
+## 🔗 参考
+
+- [ClassIsland CI/CD](https://github.com/ClassIsland/ClassIsland/.github/workflows/)
+- [GitHub Actions 文档](https://docs.github.com/actions)
+- [.NET 发布指南](https://learn.microsoft.com/dotnet/core/tools/dotnet-publish)
+- [Avalonia 部署](https://docs.avaloniaui.net/docs/deployment)
+
+---
+
+**更新:** 2026-03-04  
+**版本:** 2.0 (参考 ClassIsland)  
+**状态:** ✅ 生产可用
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 697ffdf..574c587 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,25 +1,25 @@
-name: Build & Test
+name: Build
 
 on:
   push:
-    branches: [ main, master, dev, develop ]
   pull_request:
-    branches: [ main, master, dev, develop ]
   workflow_dispatch:
 
 env:
   DOTNET_VERSION: '10.0.x'
+  Solution_Name: LanMontainDesktop.sln
 
 jobs:
-  build:
+  build-windows:
     runs-on: windows-latest
+    name: Build_Windows_${{ matrix.configuration }}
     strategy:
       matrix:
         configuration: [ Debug, Release ]
       fail-fast: false
     
     steps:
-      - name: Checkout code
+      - name: Checkout
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
@@ -30,27 +30,87 @@ jobs:
         with:
           dotnet-version: ${{ env.DOTNET_VERSION }}
 
-      - name: Restore dependencies
+      - name: Restore
         run: dotnet restore
 
-      - name: Build LanMontainDesktop
-        run: dotnet build LanMontainDesktop/LanMontainDesktop.csproj -c ${{ matrix.configuration }} --no-restore
+      - name: Build
+        run: dotnet build --no-restore -c ${{ matrix.configuration }} -v minimal
 
-      - name: Build RecommendationBackend
-        run: dotnet build LanMontainDesktop.RecommendationBackend/LanMontainDesktop.RecommendationBackend.csproj -c ${{ matrix.configuration }} --no-restore
-
-      - name: Test LanMontainDesktop
-        run: dotnet test LanMontainDesktop/LanMontainDesktop.csproj -c ${{ matrix.configuration }} --no-build --verbosity normal --logger "trx;LogFileName=test-results.trx" || true
-
-      - name: Test RecommendationBackend
-        run: dotnet test LanMontainDesktop.RecommendationBackend/LanMontainDesktop.RecommendationBackend.csproj -c ${{ matrix.configuration }} --no-build --verbosity normal --logger "trx;LogFileName=test-results.trx" || true
-
-      - name: Upload build artifacts
-        if: always()
+      - name: Upload artifacts
         uses: actions/upload-artifact@v4
         with:
-          name: build-output-${{ matrix.configuration }}
+          name: build-windows-${{ matrix.configuration }}
           path: |
             LanMontainDesktop/bin/${{ matrix.configuration }}/
             LanMontainDesktop.RecommendationBackend/bin/${{ matrix.configuration }}/
           retention-days: 7
+
+  build-linux:
+    runs-on: ubuntu-latest
+    name: Build_Linux
+    
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          submodules: recursive
+
+      - name: Install system dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            libfontconfig1 libfreetype6 \
+            libx11-6 libxrandr2 libxinerama1 \
+            libxi6 libxcursor1 libxext6
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: ${{ env.DOTNET_VERSION }}
+
+      - name: Restore
+        run: dotnet restore
+
+      - name: Build
+        run: dotnet build --no-restore -c Release -v minimal
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: build-linux
+          path: |
+            LanMontainDesktop/bin/Release/
+            LanMontainDesktop.RecommendationBackend/bin/Release/
+          retention-days: 7
+
+  build-macos:
+    runs-on: macos-latest
+    name: Build_macOS
+    
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          submodules: recursive
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: ${{ env.DOTNET_VERSION }}
+
+      - name: Restore
+        run: dotnet restore
+
+      - name: Build
+        run: dotnet build --no-restore -c Release -v minimal
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: build-macos
+          path: |
+            LanMontainDesktop/bin/Release/
+            LanMontainDesktop.RecommendationBackend/bin/Release/
+          retention-days: 7
diff --git a/.github/workflows/code-quality.yml b/.github/workflows/code-quality.yml
index 4ef433b..0b20c63 100644
--- a/.github/workflows/code-quality.yml
+++ b/.github/workflows/code-quality.yml
@@ -1,17 +1,16 @@
-name: Code Quality
+name: Quality Check
 
 on:
-  workflow_dispatch:
   pull_request:
-    branches: [ main, master, dev, develop ]
   push:
     branches: [ main, master, dev, develop ]
+  workflow_dispatch:
 
 env:
   DOTNET_VERSION: '10.0.x'
 
 jobs:
-  code-analysis:
+  analyze:
     runs-on: windows-latest
     permissions:
       contents: read
@@ -19,7 +18,7 @@ jobs:
       checks: write
     
     steps:
-      - name: Checkout code
+      - name: Checkout
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
@@ -31,44 +30,12 @@ jobs:
         with:
           dotnet-version: ${{ env.DOTNET_VERSION }}
 
-      - name: Restore dependencies
+      - name: Restore
         run: dotnet restore
 
-      - name: Build projects
-        run: |
-          dotnet build LanMontainDesktop/LanMontainDesktop.csproj
-          dotnet build LanMontainDesktop.RecommendationBackend/LanMontainDesktop.RecommendationBackend.csproj
+      - name: Build
+        run: dotnet build -c Release --no-restore -v minimal
 
-      # 可以添加Qodana检查（如果配置了token）
-      # - name: Run Qodana Analysis
-      #   uses: JetBrains/qodana-action@v2025.1
-      #   with:
-      #     pr-mode: true
-      #   env:
-      #     QODANA_TOKEN: ${{ secrets.QODANA_TOKEN }}
-      #     QODANA_ENDPOINT: 'https://qodana.cloud'
-
-  dotnet-format:
-    runs-on: windows-latest
-    permissions:
-      contents: read
-      pull-requests: write
-    
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Setup .NET
-        uses: actions/setup-dotnet@v4
-        with:
-          dotnet-version: ${{ env.DOTNET_VERSION }}
-
-      - name: Restore dependencies
-        run: dotnet restore
-
-      - name: Check code formatting
-        run: |
-          dotnet format --verify-no-changes --verbosity diagnostic || (
-            echo "::warning::Code formatting issues detected. Please run 'dotnet format' locally."
-            exit 0
-          )
+      - name: Check formatting
+        run: dotnet format --verify-no-changes --verbosity diagnostic || true
+        continue-on-error: true
diff --git a/.github/workflows/issue-management.yml b/.github/workflows/issue-management.yml
index 2d2e9ca..776a6ed 100644
--- a/.github/workflows/issue-management.yml
+++ b/.github/workflows/issue-management.yml
@@ -1,13 +1,12 @@
 name: Issue Management
 
 on:
-  workflow_dispatch: 
   schedule:
-    # Every day at 1:30 AM UTC
-    - cron: "30 1 * * *"
+    - cron: "30 1 * * *"  # Daily at 1:30 AM UTC
+  workflow_dispatch:
 
 jobs:
-  close-stale-issues:
+  stale:
     runs-on: ubuntu-latest
     permissions:
       issues: write
@@ -18,20 +17,17 @@ jobs:
         uses: actions/stale@v9
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
-          any-of-labels: 'need-more-info,waiting-for-response'
-          days-before-issue-stale: 14
+          days-before-issue-stale: 30
           days-before-issue-close: 7
-          days-before-pr-stale: 21
-          days-before-pr-close: 14
-          stale-issue-label: 'stale'
-          stale-pr-label: 'stale'
-          stale-issue-message: |
-            This issue has been inactive for 14 days. 
-            It will be closed in 7 days if there's no activity.
-            Please comment to keep it open.
-          stale-pr-message: |
-            This PR has been inactive for 21 days. 
-            It will be closed in 14 days if there's no activity.
-            Please comment or update the PR to keep it open.
-          close-issue-message: 'Closed due to inactivity. Feel free to reopen if needed.'
-          close-pr-message: 'Closed due to inactivity. Feel free to reopen if needed.'
+          days-before-pr-stale: 30
+          days-before-pr-close: 7
+          stale-issue-label: stale
+          stale-pr-label: stale
+          close-issue-label: closed
+          close-pr-label: closed
+          stale-issue-message: This issue is stale and will be closed in 7 days
+          stale-pr-message: This PR is stale and will be closed in 7 days
+          close-issue-message: Closed as stale
+          close-pr-message: Closed as stale
+          exempt-issue-labels: pinned,security
+          exempt-pr-labels: pinned,security
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 4790b40..237c01a 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -1,138 +1,98 @@
-name: Release & Publish (Multi-Platform)
+name: Release
 
 on:
   push:
     tags:
       - 'v*'
-      - 'release-*'
   workflow_dispatch:
     inputs:
-      version:
-        description: 'Release version (e.g., 1.0.0)'
+      tag:
+        description: 'Release tag'
         required: true
         type: string
       is_prerelease:
-        description: 'Mark as pre-release'
+        description: 'Pre-release'
         required: false
         type: boolean
         default: false
-      build_windows:
-        description: 'Build Windows (x64/x86)'
-        required: false
-        type: boolean
-        default: true
-      build_linux:
-        description: 'Build Linux (x64)'
-        required: false
-        type: boolean
-        default: true
-      build_macos:
-        description: 'Build macOS (x64/arm64)'
-        required: false
-        type: boolean
-        default: true
 
 env:
   DOTNET_VERSION: '10.0.x'
+  Solution_Name: LanMontainDesktop.sln
 
 jobs:
   prepare:
     runs-on: ubuntu-latest
     outputs:
       version: ${{ steps.version.outputs.version }}
-      is_prerelease: ${{ steps.version.outputs.is_prerelease }}
-      build_windows: ${{ steps.versions.outputs.build_windows }}
-      build_linux: ${{ steps.versions.outputs.build_linux }}
-      build_macos: ${{ steps.versions.outputs.build_macos }}
+      tag: ${{ steps.version.outputs.tag }}
     
     steps:
-      - name: Get version from tag or input
+      - name: Get release info
         id: version
-        shell: bash
         run: |
           if [[ "${{ github.event_name }}" == "push" ]]; then
-            VERSION=${GITHUB_REF#refs/tags/}
+            TAG=${GITHUB_REF#refs/tags/}
           else
-            VERSION=${{ github.event.inputs.version }}
+            TAG=${{ github.event.inputs.tag }}
           fi
-          VERSION=${VERSION#v}
-          IS_PRERELEASE=${{ github.event.inputs.is_prerelease }}
+          VERSION=${TAG#v}
+          echo "tag=${TAG}" >> $GITHUB_OUTPUT
           echo "version=${VERSION}" >> $GITHUB_OUTPUT
-          echo "is_prerelease=${IS_PRERELEASE}" >> $GITHUB_OUTPUT
-
-      - name: Determine build targets
-        id: versions
-        shell: bash
-        run: |
-          if [[ "${{ github.event_name }}" == "push" ]]; then
-            echo "build_windows=true" >> $GITHUB_OUTPUT
-            echo "build_linux=true" >> $GITHUB_OUTPUT
-            echo "build_macos=true" >> $GITHUB_OUTPUT
-          else
-            echo "build_windows=${{ github.event.inputs.build_windows }}" >> $GITHUB_OUTPUT
-            echo "build_linux=${{ github.event.inputs.build_linux }}" >> $GITHUB_OUTPUT
-            echo "build_macos=${{ github.event.inputs.build_macos }}" >> $GITHUB_OUTPUT
-          fi
 
   build-windows:
-    if: needs.prepare.outputs.build_windows == 'true'
     needs: prepare
     runs-on: windows-latest
     strategy:
       matrix:
-        arch: [ x64, x86 ]
-        include:
-          - arch: x64
-            rid: win-x64
-          - arch: x86
-            rid: win-x86
-    
-    name: Build Windows (${{ matrix.arch }})
+        arch: [x64, x86]
+    name: Build_Windows_${{ matrix.arch }}
     
     steps:
-      - name: Checkout code
+      - name: Checkout
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
           submodules: recursive
+          ref: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.tag || github.ref }}
 
       - name: Setup .NET
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: ${{ env.DOTNET_VERSION }}
 
-      - name: Update version in csproj
-        run: |
-          $version = "${{ needs.prepare.outputs.version }}"
-          (Get-Content LanMontainDesktop/LanMontainDesktop.csproj) -replace '(<Version>)[^<]*(</Version>)', "`$1$version`$2" | Set-Content LanMontainDesktop/LanMontainDesktop.csproj
-          (Get-Content LanMontainDesktop.RecommendationBackend/LanMontainDesktop.RecommendationBackend.csproj) -replace '(<Version>)[^<]*(</Version>)', "`$1$version`$2" | Set-Content LanMontainDesktop.RecommendationBackend/LanMontainDesktop.RecommendationBackend.csproj
-        shell: pwsh
-
-      - name: Restore dependencies
+      - name: Restore
         run: dotnet restore
 
-      - name: Publish LanMontainDesktop
+      - name: Build
+        run: dotnet build -c Release --no-restore -v minimal
+
+      - name: Publish
         run: |
           dotnet publish LanMontainDesktop/LanMontainDesktop.csproj `
             -c Release `
-            -o ./publish/${{ matrix.rid }} `
-            -r ${{ matrix.rid }} `
+            -o ./publish/windows-${{ matrix.arch }} `
             --self-contained `
+            -r win-${{ matrix.arch }} `
             -p:PublishSingleFile=true `
-            -p:PublishTrimmed=false `
-            -p:IncludeNativeLibrariesForSelfExtract=true
+            -p:DebugType=none
         shell: pwsh
 
-      - name: Create Windows package
+      - name: Package
         run: |
-          $packageDir = "LanMontainDesktop-${{ needs.prepare.outputs.version }}-${{ matrix.rid }}"
-          New-Item -ItemType Directory -Path $packageDir -Force | Out-Null
-          Copy-Item "./publish/${{ matrix.rid }}/*" -Destination $packageDir -Recurse -Force
-          Compress-Archive -Path $packageDir -DestinationPath "$packageDir.zip" -Force
-          Write-Host "✅ Package created: $packageDir.zip"
+          $version = "${{ needs.prepare.outputs.version }}"
+          $arch = "${{ matrix.arch }}"
+          $source = "publish/windows-$arch"
+          $package = "LanMontainDesktop-$version-win-$arch"
+          
+          New-Item -ItemType Directory -Path "$package" -Force | Out-Null
+          Copy-Item -Path "$source/*" -Destination "$package" -Recurse -Force
+          Compress-Archive -Path "$package" -DestinationPath "$package.zip" -Force
+          
+          Write-Host "Created: $package.zip"
         shell: pwsh
 
-      - name: Upload artifacts
+      - name: Upload
         uses: actions/upload-artifact@v4
         with:
           name: release-windows-${{ matrix.arch }}
@@ -140,209 +100,160 @@ jobs:
           retention-days: 30
 
   build-linux:
-    if: needs.prepare.outputs.build_linux == 'true'
     needs: prepare
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        arch: [ x64 ]
-        include:
-          - arch: x64
-            rid: linux-x64
-    
-    name: Build Linux (${{ matrix.arch }})
+    name: Build_Linux
     
     steps:
-      - name: Checkout code
+      - name: Checkout
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
           submodules: recursive
+          ref: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.tag || github.ref }}
+
+      - name: Install dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            libfontconfig1 libfreetype6 \
+            libx11-6 libxrandr2 libxinerama1 \
+            libxi6 libxcursor1 libxext6 \
+            libxrender1 libxkbcommon-x11-0
 
       - name: Setup .NET
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: ${{ env.DOTNET_VERSION }}
 
-      - name: Install Linux dependencies
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y \
-            libfontconfig1 \
-            libfreetype6 \
-            libx11-6 \
-            libxrandr2 \
-            libxinerama1 \
-            libxi6 \
-            libxcursor1 \
-            libxext6 \
-            libxrender1 \
-            libxkbcommon-x11-0
-
-      - name: Update version in csproj
-        run: |
-          sed -i 's/<Version>[^<]*<\/Version>/<Version>${{ needs.prepare.outputs.version }}<\/Version>/g' LanMontainDesktop/LanMontainDesktop.csproj
-          sed -i 's/<Version>[^<]*<\/Version>/<Version>${{ needs.prepare.outputs.version }}<\/Version>/g' LanMontainDesktop.RecommendationBackend/LanMontainDesktop.RecommendationBackend.csproj
-
-      - name: Restore dependencies
+      - name: Restore
         run: dotnet restore
 
-      - name: Publish LanMontainDesktop
+      - name: Build
+        run: dotnet build -c Release --no-restore -v minimal
+
+      - name: Publish
         run: |
           dotnet publish LanMontainDesktop/LanMontainDesktop.csproj \
             -c Release \
-            -o ./publish/${{ matrix.rid }} \
-            -r ${{ matrix.rid }} \
+            -o ./publish/linux-x64 \
             --self-contained \
+            -r linux-x64 \
             -p:PublishSingleFile=true \
-            -p:PublishTrimmed=false
+            -p:DebugType=none
 
-      - name: Create Linux packages
+      - name: Package
         run: |
-          PACKAGE_DIR="LanMontainDesktop-${{ needs.prepare.outputs.version }}-${{ matrix.rid }}"
-          mkdir -p "$PACKAGE_DIR"
-          cp -r "./publish/${{ matrix.rid }}"/* "$PACKAGE_DIR/"
+          version="${{ needs.prepare.outputs.version }}"
+          source="publish/linux-x64"
+          package="LanMontainDesktop-$version-linux-x64"
           
-          # Create tar.gz
-          tar -czf "$PACKAGE_DIR.tar.gz" "$PACKAGE_DIR"
-          echo "✅ Created: $PACKAGE_DIR.tar.gz"
+          mkdir -p "$package"
+          cp -r "$source"/* "$package/"
+          tar -czf "$package.tar.gz" "$package"
           
-          # Optional: Create AppImage (requires specific tools)
-          # This is commented out as it requires additional dependencies
-          # appimage-builder or similar tools would go here
+          echo "Created: $package.tar.gz"
 
-      - name: Upload artifacts
+      - name: Upload
         uses: actions/upload-artifact@v4
         with:
-          name: release-linux-${{ matrix.arch }}
+          name: release-linux
           path: LanMontainDesktop-*.tar.gz
           retention-days: 30
 
   build-macos:
-    if: needs.prepare.outputs.build_macos == 'true'
     needs: prepare
     runs-on: macos-latest
     strategy:
       matrix:
-        arch: [ x64, arm64 ]
-        include:
-          - arch: x64
-            rid: osx-x64
-          - arch: arm64
-            rid: osx-arm64
-    
-    name: Build macOS (${{ matrix.arch }})
+        arch: [x64, arm64]
+    name: Build_macOS_${{ matrix.arch }}
     
     steps:
-      - name: Checkout code
+      - name: Checkout
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
           submodules: recursive
+          ref: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.tag || github.ref }}
 
       - name: Setup .NET
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: ${{ env.DOTNET_VERSION }}
 
-      - name: Update version in csproj
-        run: |
-          sed -i '' 's/<Version>[^<]*<\/Version>/<Version>${{ needs.prepare.outputs.version }}<\/Version>/g' LanMontainDesktop/LanMontainDesktop.csproj
-          sed -i '' 's/<Version>[^<]*<\/Version>/<Version>${{ needs.prepare.outputs.version }}<\/Version>/g' LanMontainDesktop.RecommendationBackend/LanMontainDesktop.RecommendationBackend.csproj
-
-      - name: Restore dependencies
+      - name: Restore
         run: dotnet restore
 
-      - name: Publish LanMontainDesktop
+      - name: Build
+        run: dotnet build -c Release --no-restore -v minimal
+
+      - name: Publish
         run: |
           dotnet publish LanMontainDesktop/LanMontainDesktop.csproj \
             -c Release \
-            -o ./publish/${{ matrix.rid }} \
-            -r ${{ matrix.rid }} \
+            -o ./publish/macos-${{ matrix.arch }} \
             --self-contained \
+            -r osx-${{ matrix.arch }} \
             -p:PublishSingleFile=true \
-            -p:PublishTrimmed=false
+            -p:DebugType=none
 
-      - name: Create macOS packages
+      - name: Package
         run: |
-          PACKAGE_DIR="LanMontainDesktop-${{ needs.prepare.outputs.version }}-${{ matrix.rid }}"
-          mkdir -p "$PACKAGE_DIR"
-          cp -r "./publish/${{ matrix.rid }}"/* "$PACKAGE_DIR/"
+          version="${{ needs.prepare.outputs.version }}"
+          arch="${{ matrix.arch }}"
+          source="publish/macos-$arch"
+          package="LanMontainDesktop-$version-macos-$arch"
           
-          # Create tar.gz
-          tar -czf "$PACKAGE_DIR.tar.gz" "$PACKAGE_DIR"
-          echo "✅ Created: $PACKAGE_DIR.tar.gz"
+          mkdir -p "$package"
+          cp -r "$source"/* "$package/"
+          tar -czf "$package.tar.gz" "$package"
           
-          # Optional: Create DMG (requires additional tools)
-          # DMG creation would go here if needed
+          echo "Created: $package.tar.gz"
 
-      - name: Upload artifacts
+      - name: Upload
         uses: actions/upload-artifact@v4
         with:
           name: release-macos-${{ matrix.arch }}
           path: LanMontainDesktop-*.tar.gz
           retention-days: 30
 
-  create-release:
-    needs: prepare
-    if: always()
+  github-release:
+    needs: [ prepare, build-windows, build-linux, build-macos ]
     runs-on: ubuntu-latest
+    if: startsWith(github.ref, 'refs/tags/')
     permissions:
       contents: write
     
     steps:
-      - name: Download all artifacts
+      - name: Download artifacts
         uses: actions/download-artifact@v4
         with:
-          path: ./release-artifacts
+          path: artifacts
           pattern: release-*
 
-      - name: List downloaded artifacts
-        run: |
-          echo "📦 Downloaded artifacts:"
-          find ./release-artifacts -type f -name "*.zip" -o -name "*.tar.gz" | sort
-
-      - name: Create GitHub Release
-        uses: softprops/action-gh-release@v1
-        if: startsWith(github.ref, 'refs/tags/')
+      - name: Create Release
+        uses: ncipollo/release-action@v1
         with:
-          files: |
-            release-artifacts/**/*.zip
-            release-artifacts/**/*.tar.gz
+          tag: ${{ github.ref_name }}
           draft: false
-          prerelease: ${{ needs.prepare.outputs.is_prerelease }}
+          prerelease: ${{ github.event.inputs.is_prerelease == 'true' }}
+          artifacts: artifacts/**/*
           body: |
             ## Release ${{ needs.prepare.outputs.version }}
             
-            ### 📥 Downloads
+            ### Downloads
             
             **Windows:**
-            - `LanMontainDesktop-${{ needs.prepare.outputs.version }}-win-x64.zip` - Windows 64-bit
-            - `LanMontainDesktop-${{ needs.prepare.outputs.version }}-win-x86.zip` - Windows 32-bit
+            - win-x64 (64-bit)
+            - win-x86 (32-bit)
             
             **Linux:**
-            - `LanMontainDesktop-${{ needs.prepare.outputs.version }}-linux-x64.tar.gz` - Linux 64-bit
+            - linux-x64
             
             **macOS:**
-            - `LanMontainDesktop-${{ needs.prepare.outputs.version }}-osx-x64.tar.gz` - macOS Intel
-            - `LanMontainDesktop-${{ needs.prepare.outputs.version }}-osx-arm64.tar.gz` - macOS Apple Silicon
+            - macos-x64 (Intel)
+            - macos-arm64 (Apple Silicon)
             
-            ### 📝 Changes
-            See commits for detailed changes: ${{ github.event.compare || 'https://github.com/${{ github.repository }}/commits/${{ github.sha }}' }}
-            
-            ### 💾 Installation
-            
-            **Windows:** Extract zip and run `LanMontainDesktop.exe`
-            
-            **Linux:** Extract tar.gz and run `./LanMontainDesktop`
-            
-            **macOS:** Extract tar.gz and run `./LanMontainDesktop`
-            
-            ### ℹ️ System Requirements
-            - .NET Runtime 10.0+ (included in self-contained builds)
-            - Windows 10+, macOS 10.15+, or modern Linux distribution
-            
-            ---
-            *Built by ${{ github.event.actor }} on ${{ github.event.head_commit.timestamp }}*
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+            See commits for changes.
+          token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/LanMontainDesktop/App.axaml b/LanMontainDesktop/App.axaml
index 4bfdaa9..aacd6e5 100644
--- a/LanMontainDesktop/App.axaml
+++ b/LanMontainDesktop/App.axaml
@@ -28,6 +28,11 @@
             <Setter Property="FontFamily" Value="{DynamicResource AppFontFamily}" />
         </Style>
 
+        <!-- Mitigation for Avalonia ScrollContentPresenter offset recursion during gesture inertia -->
+        <Style Selector="ScrollViewer">
+            <Setter Property="ScrollViewer.IsScrollInertiaEnabled" Value="False" />
+        </Style>
+
         <Style Selector="fi|SymbolIcon">
             <Setter Property="Foreground" Value="{DynamicResource AdaptiveTextPrimaryBrush}" />
             <Setter Property="FontSize" Value="16" />
diff --git a/LanMontainDesktop/App.axaml.cs b/LanMontainDesktop/App.axaml.cs
index e303928..12a88c2 100644
--- a/LanMontainDesktop/App.axaml.cs
+++ b/LanMontainDesktop/App.axaml.cs
@@ -6,6 +6,7 @@ using System.Linq;
 using Avalonia.Markup.Xaml;
 using LanMontainDesktop.ViewModels;
 using LanMontainDesktop.Views;
+using AvaloniaWebView;
 
 namespace LanMontainDesktop;
 
@@ -13,6 +14,7 @@ public partial class App : Application
 {
     public override void Initialize()
     {
+        AvaloniaWebViewBuilder.Initialize(default);
         AvaloniaXamlLoader.Load(this);
     }
 
@@ -44,4 +46,4 @@ public partial class App : Application
             BindingPlugins.DataValidators.Remove(plugin);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/LanMontainDesktop/ComponentSystem/BuiltInComponentIds.cs b/LanMontainDesktop/ComponentSystem/BuiltInComponentIds.cs
index ab48716..a698902 100644
--- a/LanMontainDesktop/ComponentSystem/BuiltInComponentIds.cs
+++ b/LanMontainDesktop/ComponentSystem/BuiltInComponentIds.cs
@@ -22,4 +22,5 @@ public static class BuiltInComponentIds
     public const string DesktopDailyArtwork = "DesktopDailyArtwork";
     public const string DesktopWhiteboard = "DesktopWhiteboard";
     public const string DesktopBlackboardLandscape = "DesktopBlackboardLandscape";
+    public const string DesktopBrowser = "DesktopBrowser";
 }
diff --git a/LanMontainDesktop/ComponentSystem/ComponentRegistry.cs b/LanMontainDesktop/ComponentSystem/ComponentRegistry.cs
index 455ad76..ab2924e 100644
--- a/LanMontainDesktop/ComponentSystem/ComponentRegistry.cs
+++ b/LanMontainDesktop/ComponentSystem/ComponentRegistry.cs
@@ -159,6 +159,16 @@ public sealed class ComponentRegistry
                 AllowStatusBarPlacement: false,
                 AllowDesktopPlacement: true,
                 ResizeMode: DesktopComponentResizeMode.Free),
+            new DesktopComponentDefinition(
+                BuiltInComponentIds.DesktopBrowser,
+                "Browser",
+                "Globe",
+                "Board",
+                MinWidthCells: 4,
+                MinHeightCells: 4,
+                AllowStatusBarPlacement: false,
+                AllowDesktopPlacement: true,
+                ResizeMode: DesktopComponentResizeMode.Free),
             new DesktopComponentDefinition(
                 BuiltInComponentIds.Date,
                 "Calendar",
diff --git a/LanMontainDesktop/LanMontainDesktop.csproj b/LanMontainDesktop/LanMontainDesktop.csproj
index 87fb919..015cc1f 100644
--- a/LanMontainDesktop/LanMontainDesktop.csproj
+++ b/LanMontainDesktop/LanMontainDesktop.csproj
@@ -36,6 +36,8 @@
     <PackageReference Include="System.Drawing.Common" Version="10.0.0" />
     <PackageReference Include="VideoLAN.LibVLC.Windows" Version="3.0.23" Condition="('$(RuntimeIdentifier)' == '' and $([MSBuild]::IsOSPlatform('Windows')))&#xA;                              or '$(RuntimeIdentifier)' == 'win-x64'&#xA;                              or '$(RuntimeIdentifier)' == 'win-x86'" />
     <PackageReference Include="VideoLAN.LibVLC.Mac" Version="3.1.3.1" Condition="('$(RuntimeIdentifier)' == '' and $([MSBuild]::IsOSPlatform('OSX')))&#xA;                              or '$(RuntimeIdentifier)' == 'osx-x64'" />
+    <PackageReference Include="WebView.Avalonia" Version="11.0.0.1" />
+    <PackageReference Include="WebView.Avalonia.Desktop" Version="11.0.0.1" />
     <PackageReference Include="YamlDotNet" Version="16.3.0" />
   </ItemGroup>
 </Project>
diff --git a/LanMontainDesktop/Localization/en-US.json b/LanMontainDesktop/Localization/en-US.json
index a28f865..20ff2a0 100644
--- a/LanMontainDesktop/Localization/en-US.json
+++ b/LanMontainDesktop/Localization/en-US.json
@@ -230,6 +230,7 @@
     "component.daily_artwork":  "Daily Artwork",
     "component.whiteboard":  "Blackboard (Portrait)",
     "component.blackboard_landscape":  "Blackboard (Landscape)",
+    "component.browser":  "Browser",
     "component.holiday_calendar":  "Holiday Calendar",
     "poetry.widget.loading_content":  "Loading poetry...",
     "poetry.widget.loading_author":  "Loading...",
diff --git a/LanMontainDesktop/Localization/zh-CN.json b/LanMontainDesktop/Localization/zh-CN.json
index b9bd3f8..40ee600 100644
--- a/LanMontainDesktop/Localization/zh-CN.json
+++ b/LanMontainDesktop/Localization/zh-CN.json
@@ -230,6 +230,7 @@
     "component.daily_artwork":  "每日名画",
     "component.whiteboard":  "竖向小黑板",
     "component.blackboard_landscape":  "横向小黑板",
+    "component.browser":  "浏览器",
     "component.holiday_calendar":  "节假日日历",
     "poetry.widget.loading_content":  "正在加载诗词",
     "poetry.widget.loading_author":  "加载中",
diff --git a/LanMontainDesktop/Models/StudyAnalyticsModels.cs b/LanMontainDesktop/Models/StudyAnalyticsModels.cs
new file mode 100644
index 0000000..e6399f0
--- /dev/null
+++ b/LanMontainDesktop/Models/StudyAnalyticsModels.cs
@@ -0,0 +1,138 @@
+using System;
+using System.Collections.Generic;
+
+namespace LanMontainDesktop.Models;
+
+public enum StudyAnalyticsRuntimeState
+{
+    Unsupported = 0,
+    Ready = 1,
+    Running = 2,
+    Paused = 3,
+    Error = 4
+}
+
+public enum NoiseStreamStatus
+{
+    Initializing = 0,
+    Quiet = 1,
+    Noisy = 2,
+    Error = 3
+}
+
+public enum StudySessionRuntimeState
+{
+    Idle = 0,
+    Running = 1,
+    Completed = 2,
+    Error = 3
+}
+
+public enum StudyDataMode
+{
+    Realtime = 0,
+    SessionRunning = 1,
+    SessionReport = 2
+}
+
+public sealed record StudyAnalyticsConfig(
+    int FrameMs = 50,
+    int SliceSec = 30,
+    double ScoreThresholdDbfs = -50,
+    int SegmentMergeGapMs = 500,
+    int MaxSegmentsPerMin = 6,
+    double SilenceFloorDbfs = -90,
+    double BaselineDb = 45,
+    bool ShowRelativeDb = true,
+    bool AlertSoundEnabled = false,
+    int AvgWindowSec = 1,
+    int RealtimeBufferCapacity = 240);
+
+public sealed record NoiseRealtimePoint(
+    DateTimeOffset Timestamp,
+    double Rms,
+    double Dbfs,
+    double DisplayDb,
+    double Peak,
+    bool IsOverThreshold);
+
+public sealed record NoiseSliceRawStats(
+    double AvgDbfs,
+    double MaxDbfs,
+    double P50Dbfs,
+    double P95Dbfs,
+    double OverRatioDbfs,
+    int SegmentCount,
+    double SampledDurationMs,
+    int GapCount,
+    double MaxGapMs);
+
+public sealed record NoiseSliceDisplayStats(
+    double AvgDb,
+    double P95Db);
+
+public sealed record NoiseScoreBreakdown(
+    double SustainedPenalty,
+    double TimePenalty,
+    double SegmentPenalty,
+    double TotalPenalty,
+    double Score,
+    double SustainedLevelDbfs,
+    double OverRatioDbfs,
+    int SegmentCount,
+    double Minutes,
+    double DurationMs);
+
+public sealed record NoiseSliceSummary(
+    DateTimeOffset StartAt,
+    DateTimeOffset EndAt,
+    int FrameCount,
+    NoiseSliceRawStats Raw,
+    NoiseSliceDisplayStats Display,
+    double Score,
+    NoiseScoreBreakdown ScoreDetail);
+
+public sealed record StudySessionOptions(
+    string? Label = null,
+    DateTimeOffset? PlannedEndAt = null);
+
+public sealed record StudySessionMetrics(
+    double CurrentScore,
+    double AvgScore,
+    double MinScore,
+    double MaxScore,
+    double WeightedOverRatioDbfs,
+    int TotalSegmentCount,
+    TimeSpan EffectiveDuration,
+    int SliceCount);
+
+public sealed record StudySessionSnapshot(
+    StudySessionRuntimeState State,
+    string? SessionId,
+    string Label,
+    DateTimeOffset? StartedAt,
+    DateTimeOffset? EndedAt,
+    TimeSpan Elapsed,
+    StudySessionMetrics Metrics,
+    string LastError);
+
+public sealed record StudySessionReport(
+    string SessionId,
+    string Label,
+    DateTimeOffset StartedAt,
+    DateTimeOffset EndedAt,
+    TimeSpan Duration,
+    StudySessionMetrics Metrics,
+    IReadOnlyList<NoiseSliceSummary> Slices);
+
+public sealed record StudyAnalyticsSnapshot(
+    StudyAnalyticsRuntimeState State,
+    NoiseStreamStatus StreamStatus,
+    StudyDataMode DataMode,
+    StudyAnalyticsConfig Config,
+    NoiseRealtimePoint? LatestRealtimePoint,
+    NoiseSliceSummary? LatestSlice,
+    IReadOnlyList<NoiseRealtimePoint> RealtimeBuffer,
+    StudySessionSnapshot Session,
+    StudySessionReport? LastSessionReport,
+    string LastError);
diff --git a/LanMontainDesktop/Program.cs b/LanMontainDesktop/Program.cs
index 16f49b0..6cf63f1 100644
--- a/LanMontainDesktop/Program.cs
+++ b/LanMontainDesktop/Program.cs
@@ -1,4 +1,5 @@
-using Avalonia;
+using Avalonia;
+using Avalonia.WebView.Desktop;
 using System;
 
 namespace LanMontainDesktop;
@@ -16,6 +17,7 @@ sealed class Program
     public static AppBuilder BuildAvaloniaApp()
         => AppBuilder.Configure<App>()
             .UsePlatformDetect()
+            .UseDesktopWebView()
             .WithInterFont()
             .LogToTrace();
 }
diff --git a/LanMontainDesktop/Services/IStudyAnalyticsService.cs b/LanMontainDesktop/Services/IStudyAnalyticsService.cs
new file mode 100644
index 0000000..91d60b3
--- /dev/null
+++ b/LanMontainDesktop/Services/IStudyAnalyticsService.cs
@@ -0,0 +1,48 @@
+using System;
+using LanMontainDesktop.Models;
+
+namespace LanMontainDesktop.Services;
+
+public sealed class StudyAnalyticsSnapshotChangedEventArgs(StudyAnalyticsSnapshot snapshot) : EventArgs
+{
+    public StudyAnalyticsSnapshot Snapshot { get; } = snapshot;
+}
+
+public sealed class NoiseSliceClosedEventArgs(NoiseSliceSummary slice) : EventArgs
+{
+    public NoiseSliceSummary Slice { get; } = slice;
+}
+
+public sealed class StudySessionCompletedEventArgs(StudySessionReport report) : EventArgs
+{
+    public StudySessionReport Report { get; } = report;
+}
+
+public interface IStudyAnalyticsService : IDisposable
+{
+    StudyAnalyticsSnapshot GetSnapshot();
+
+    StudyAnalyticsConfig GetConfig();
+
+    void UpdateConfig(StudyAnalyticsConfig config);
+
+    bool StartOrResumeMonitoring();
+
+    bool PauseMonitoring();
+
+    bool StopMonitoring();
+
+    bool StartStudySession(StudySessionOptions? options = null);
+
+    bool StopStudySession();
+
+    bool CancelStudySession();
+
+    void ClearLastSessionReport();
+
+    event EventHandler<StudyAnalyticsSnapshotChangedEventArgs>? SnapshotUpdated;
+
+    event EventHandler<NoiseSliceClosedEventArgs>? SliceClosed;
+
+    event EventHandler<StudySessionCompletedEventArgs>? SessionCompleted;
+}
diff --git a/LanMontainDesktop/Services/StudyAnalyticsInternals.cs b/LanMontainDesktop/Services/StudyAnalyticsInternals.cs
new file mode 100644
index 0000000..51026ac
--- /dev/null
+++ b/LanMontainDesktop/Services/StudyAnalyticsInternals.cs
@@ -0,0 +1,492 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using LanMontainDesktop.Models;
+
+namespace LanMontainDesktop.Services;
+
+internal readonly record struct NoisePipelineTickResult(
+    NoiseRealtimePoint RealtimePoint,
+    NoiseSliceSummary? ClosedSlice);
+
+internal sealed class NoiseFramePipeline
+{
+    private StudyAnalyticsConfig _config;
+    private readonly Queue<NoiseRealtimePoint> _realtimeBuffer = new();
+    private readonly List<NoiseRealtimePoint> _slicePoints = [];
+
+    private DateTimeOffset _sliceStartAt;
+    private DateTimeOffset _lastFrameAt;
+    private DateTimeOffset _lastOverThresholdAt;
+
+    private int _overThresholdFrameCount;
+    private int _segmentCount;
+    private bool _segmentOpen;
+    private int _gapCount;
+    private double _maxGapMs;
+
+    public NoiseFramePipeline(StudyAnalyticsConfig config)
+    {
+        _config = NormalizeConfig(config);
+    }
+
+    public void UpdateConfig(StudyAnalyticsConfig config)
+    {
+        _config = NormalizeConfig(config);
+        Reset();
+    }
+
+    public void Reset()
+    {
+        _realtimeBuffer.Clear();
+        _slicePoints.Clear();
+        _sliceStartAt = default;
+        _lastFrameAt = default;
+        _lastOverThresholdAt = default;
+        _overThresholdFrameCount = 0;
+        _segmentCount = 0;
+        _segmentOpen = false;
+        _gapCount = 0;
+        _maxGapMs = 0;
+    }
+
+    public IReadOnlyList<NoiseRealtimePoint> GetRealtimeBufferSnapshot()
+    {
+        return _realtimeBuffer.ToArray();
+    }
+
+    public NoisePipelineTickResult AddFrame(DateTimeOffset timestamp, double rms, double dbfs, double displayDb, double peak)
+    {
+        if (_sliceStartAt == default)
+        {
+            _sliceStartAt = timestamp;
+        }
+
+        if (_lastFrameAt != default)
+        {
+            var actualGapMs = (timestamp - _lastFrameAt).TotalMilliseconds;
+            var expectedGapMs = _config.FrameMs;
+            var jitterMs = Math.Max(0, actualGapMs - expectedGapMs);
+            if (jitterMs > Math.Max(12, expectedGapMs * 0.8))
+            {
+                _gapCount++;
+                _maxGapMs = Math.Max(_maxGapMs, jitterMs);
+            }
+        }
+
+        _lastFrameAt = timestamp;
+
+        var isOverThreshold = dbfs > _config.ScoreThresholdDbfs;
+        if (isOverThreshold)
+        {
+            _overThresholdFrameCount++;
+            if (_segmentOpen)
+            {
+                _lastOverThresholdAt = timestamp;
+            }
+            else
+            {
+                var canMergeToPrevious = _lastOverThresholdAt != default &&
+                                         (timestamp - _lastOverThresholdAt).TotalMilliseconds <= _config.SegmentMergeGapMs;
+                if (!canMergeToPrevious)
+                {
+                    _segmentCount++;
+                }
+
+                _segmentOpen = true;
+                _lastOverThresholdAt = timestamp;
+            }
+        }
+        else if (_segmentOpen && _lastOverThresholdAt != default)
+        {
+            var silentGapMs = (timestamp - _lastOverThresholdAt).TotalMilliseconds;
+            if (silentGapMs > _config.SegmentMergeGapMs)
+            {
+                _segmentOpen = false;
+            }
+        }
+
+        var point = new NoiseRealtimePoint(
+            timestamp,
+            rms,
+            dbfs,
+            displayDb,
+            peak,
+            isOverThreshold);
+        _slicePoints.Add(point);
+        _realtimeBuffer.Enqueue(point);
+
+        while (_realtimeBuffer.Count > _config.RealtimeBufferCapacity)
+        {
+            _realtimeBuffer.Dequeue();
+        }
+
+        var elapsedSeconds = (timestamp - _sliceStartAt).TotalSeconds;
+        if (elapsedSeconds + 1e-6 < _config.SliceSec)
+        {
+            return new NoisePipelineTickResult(point, null);
+        }
+
+        var slice = BuildClosedSlice(timestamp);
+        ResetSliceState(timestamp);
+        return new NoisePipelineTickResult(point, slice);
+    }
+
+    private NoiseSliceSummary BuildClosedSlice(DateTimeOffset endAt)
+    {
+        var sampledDurationMs = _slicePoints.Count * _config.FrameMs;
+        if (_slicePoints.Count == 0 || sampledDurationMs <= 0)
+        {
+            var emptyRaw = new NoiseSliceRawStats(
+                AvgDbfs: _config.SilenceFloorDbfs,
+                MaxDbfs: _config.SilenceFloorDbfs,
+                P50Dbfs: _config.SilenceFloorDbfs,
+                P95Dbfs: _config.SilenceFloorDbfs,
+                OverRatioDbfs: 0,
+                SegmentCount: 0,
+                SampledDurationMs: 0,
+                GapCount: _gapCount,
+                MaxGapMs: _maxGapMs);
+            var emptyDisplay = new NoiseSliceDisplayStats(_config.BaselineDb, _config.BaselineDb);
+            var emptyScore = ScoreCalculator.Calculate(
+                p50Dbfs: emptyRaw.P50Dbfs,
+                overRatioDbfs: emptyRaw.OverRatioDbfs,
+                segmentCount: emptyRaw.SegmentCount,
+                sampledDurationMs: 0,
+                scoreThresholdDbfs: _config.ScoreThresholdDbfs,
+                maxSegmentsPerMin: _config.MaxSegmentsPerMin);
+            return new NoiseSliceSummary(
+                _sliceStartAt,
+                endAt,
+                0,
+                emptyRaw,
+                emptyDisplay,
+                emptyScore.Score,
+                emptyScore);
+        }
+
+        var dbfsList = _slicePoints.Select(p => p.Dbfs).OrderBy(v => v).ToArray();
+        var displayList = _slicePoints.Select(p => p.DisplayDb).OrderBy(v => v).ToArray();
+
+        var avgDbfs = ScoreCalculator.ComputeAverageDbfs(dbfsList);
+        var maxDbfs = dbfsList[^1];
+        var p50Dbfs = Percentile(sortedValues: dbfsList, percentile: 0.50);
+        var p95Dbfs = Percentile(sortedValues: dbfsList, percentile: 0.95);
+        var overRatio = _overThresholdFrameCount / (double)_slicePoints.Count;
+
+        var raw = new NoiseSliceRawStats(
+            AvgDbfs: avgDbfs,
+            MaxDbfs: maxDbfs,
+            P50Dbfs: p50Dbfs,
+            P95Dbfs: p95Dbfs,
+            OverRatioDbfs: Math.Clamp(overRatio, 0, 1),
+            SegmentCount: _segmentCount,
+            SampledDurationMs: sampledDurationMs,
+            GapCount: _gapCount,
+            MaxGapMs: _maxGapMs);
+
+        var display = new NoiseSliceDisplayStats(
+            AvgDb: Math.Round(displayList.Average(), 2),
+            P95Db: Math.Round(Percentile(displayList, 0.95), 2));
+
+        var score = ScoreCalculator.Calculate(
+            p50Dbfs: raw.P50Dbfs,
+            overRatioDbfs: raw.OverRatioDbfs,
+            segmentCount: raw.SegmentCount,
+            sampledDurationMs: raw.SampledDurationMs,
+            scoreThresholdDbfs: _config.ScoreThresholdDbfs,
+            maxSegmentsPerMin: _config.MaxSegmentsPerMin);
+
+        return new NoiseSliceSummary(
+            _sliceStartAt,
+            endAt,
+            _slicePoints.Count,
+            raw,
+            display,
+            score.Score,
+            score);
+    }
+
+    private void ResetSliceState(DateTimeOffset nextSliceStartAt)
+    {
+        _slicePoints.Clear();
+        _sliceStartAt = nextSliceStartAt;
+        _lastOverThresholdAt = default;
+        _overThresholdFrameCount = 0;
+        _segmentCount = 0;
+        _segmentOpen = false;
+        _gapCount = 0;
+        _maxGapMs = 0;
+    }
+
+    private static double Percentile(double[] sortedValues, double percentile)
+    {
+        if (sortedValues.Length == 0)
+        {
+            return 0;
+        }
+
+        if (sortedValues.Length == 1)
+        {
+            return sortedValues[0];
+        }
+
+        var clamped = Math.Clamp(percentile, 0, 1);
+        var position = (sortedValues.Length - 1) * clamped;
+        var lower = (int)Math.Floor(position);
+        var upper = (int)Math.Ceiling(position);
+        if (lower == upper)
+        {
+            return sortedValues[lower];
+        }
+
+        var factor = position - lower;
+        return sortedValues[lower] + ((sortedValues[upper] - sortedValues[lower]) * factor);
+    }
+
+    private static StudyAnalyticsConfig NormalizeConfig(StudyAnalyticsConfig config)
+    {
+        var frameMs = Math.Clamp(config.FrameMs, 20, 250);
+        var sliceSec = Math.Clamp(config.SliceSec, 5, 600);
+        var threshold = Math.Clamp(config.ScoreThresholdDbfs, -100, -5);
+        var mergeGapMs = Math.Clamp(config.SegmentMergeGapMs, 100, 4000);
+        var maxSegments = Math.Clamp(config.MaxSegmentsPerMin, 1, 40);
+        var silenceFloor = Math.Clamp(config.SilenceFloorDbfs, -100, -20);
+        var baselineDb = Math.Clamp(config.BaselineDb, 20, 90);
+        var avgWindowSec = Math.Clamp(config.AvgWindowSec, 1, 8);
+        var ringCapacity = Math.Clamp(config.RealtimeBufferCapacity, 60, 1200);
+
+        return config with
+        {
+            FrameMs = frameMs,
+            SliceSec = sliceSec,
+            ScoreThresholdDbfs = threshold,
+            SegmentMergeGapMs = mergeGapMs,
+            MaxSegmentsPerMin = maxSegments,
+            SilenceFloorDbfs = silenceFloor,
+            BaselineDb = baselineDb,
+            AvgWindowSec = avgWindowSec,
+            RealtimeBufferCapacity = ringCapacity
+        };
+    }
+}
+
+internal static class ScoreCalculator
+{
+    public static NoiseScoreBreakdown Calculate(
+        double p50Dbfs,
+        double overRatioDbfs,
+        int segmentCount,
+        double sampledDurationMs,
+        double scoreThresholdDbfs,
+        int maxSegmentsPerMin)
+    {
+        var minutes = Math.Max(1d / 60d, sampledDurationMs / 60000d);
+        var sustainedPenalty = Clamp01((p50Dbfs - scoreThresholdDbfs) / 6d);
+        var timePenalty = Clamp01(overRatioDbfs / 0.30d);
+        var segmentRatePerMin = segmentCount / minutes;
+        var segmentPenalty = Clamp01(segmentRatePerMin / Math.Max(1, maxSegmentsPerMin));
+        var totalPenalty = (0.40d * sustainedPenalty) + (0.30d * timePenalty) + (0.30d * segmentPenalty);
+        var score = Math.Clamp(100d * (1d - totalPenalty), 0, 100);
+
+        return new NoiseScoreBreakdown(
+            SustainedPenalty: Math.Round(sustainedPenalty, 4),
+            TimePenalty: Math.Round(timePenalty, 4),
+            SegmentPenalty: Math.Round(segmentPenalty, 4),
+            TotalPenalty: Math.Round(totalPenalty, 4),
+            Score: Math.Round(score, 2),
+            SustainedLevelDbfs: Math.Round(p50Dbfs, 3),
+            OverRatioDbfs: Math.Round(Math.Clamp(overRatioDbfs, 0, 1), 4),
+            SegmentCount: Math.Max(0, segmentCount),
+            Minutes: Math.Round(minutes, 4),
+            DurationMs: Math.Max(0, sampledDurationMs));
+    }
+
+    public static double ComputeAverageDbfs(double[] dbfsValues)
+    {
+        if (dbfsValues.Length == 0)
+        {
+            return -100;
+        }
+
+        // Average in energy domain then convert back to dBFS.
+        var avgPower = dbfsValues
+            .Select(DbfsToPower)
+            .Average();
+        return Math.Round(PowerToDbfs(avgPower), 3);
+    }
+
+    public static double DbfsToPower(double dbfs)
+    {
+        return Math.Pow(10d, dbfs / 10d);
+    }
+
+    public static double PowerToDbfs(double power)
+    {
+        if (power <= 1e-12)
+        {
+            return -100;
+        }
+
+        return Math.Clamp(10d * Math.Log10(power), -100, 0);
+    }
+
+    private static double Clamp01(double value)
+    {
+        return Math.Clamp(value, 0, 1);
+    }
+}
+
+internal sealed class SessionAccumulator
+{
+    private readonly List<NoiseSliceSummary> _slices = [];
+
+    private StudySessionRuntimeState _state = StudySessionRuntimeState.Idle;
+    private string? _sessionId;
+    private string _label = string.Empty;
+    private DateTimeOffset? _startedAt;
+    private DateTimeOffset? _endedAt;
+    private string _lastError = string.Empty;
+
+    private double _sumEffectiveMs;
+    private double _sumWeightedScore;
+    private double _sumWeightedOverRatio;
+    private int _totalSegments;
+    private double _minScore = 100;
+    private double _maxScore;
+    private double _currentScore;
+
+    public bool IsRunning => _state == StudySessionRuntimeState.Running;
+
+    public bool Start(DateTimeOffset now, StudySessionOptions options)
+    {
+        if (IsRunning)
+        {
+            return false;
+        }
+
+        _state = StudySessionRuntimeState.Running;
+        _sessionId = Guid.NewGuid().ToString("N");
+        _label = string.IsNullOrWhiteSpace(options.Label) ? "Study Session" : options.Label.Trim();
+        _startedAt = now;
+        _endedAt = null;
+        _lastError = string.Empty;
+        _slices.Clear();
+        _sumEffectiveMs = 0;
+        _sumWeightedScore = 0;
+        _sumWeightedOverRatio = 0;
+        _totalSegments = 0;
+        _minScore = 100;
+        _maxScore = 0;
+        _currentScore = 0;
+        return true;
+    }
+
+    public void AddSlice(NoiseSliceSummary slice)
+    {
+        if (!IsRunning)
+        {
+            return;
+        }
+
+        _slices.Add(slice);
+        var effectiveMs = Math.Max(0, slice.Raw.SampledDurationMs);
+        _sumEffectiveMs += effectiveMs;
+        _sumWeightedScore += slice.Score * effectiveMs;
+        _sumWeightedOverRatio += slice.Raw.OverRatioDbfs * effectiveMs;
+        _totalSegments += Math.Max(0, slice.Raw.SegmentCount);
+        _currentScore = slice.Score;
+        _minScore = Math.Min(_minScore, slice.Score);
+        _maxScore = Math.Max(_maxScore, slice.Score);
+    }
+
+    public StudySessionReport? Stop(DateTimeOffset now)
+    {
+        if (!IsRunning || _startedAt is null || string.IsNullOrWhiteSpace(_sessionId))
+        {
+            return null;
+        }
+
+        _state = StudySessionRuntimeState.Completed;
+        _endedAt = now;
+
+        var metrics = BuildMetrics();
+        return new StudySessionReport(
+            SessionId: _sessionId,
+            Label: _label,
+            StartedAt: _startedAt.Value,
+            EndedAt: _endedAt.Value,
+            Duration: _endedAt.Value - _startedAt.Value,
+            Metrics: metrics,
+            Slices: _slices.ToArray());
+    }
+
+    public bool Cancel()
+    {
+        if (!IsRunning)
+        {
+            return false;
+        }
+
+        ResetToIdle();
+        return true;
+    }
+
+    public StudySessionSnapshot GetSnapshot(DateTimeOffset now)
+    {
+        var startedAt = _startedAt;
+        var endedAt = _endedAt;
+        var elapsed = startedAt is null
+            ? TimeSpan.Zero
+            : (endedAt ?? now) - startedAt.Value;
+        if (elapsed < TimeSpan.Zero)
+        {
+            elapsed = TimeSpan.Zero;
+        }
+
+        return new StudySessionSnapshot(
+            State: _state,
+            SessionId: _sessionId,
+            Label: _label,
+            StartedAt: startedAt,
+            EndedAt: endedAt,
+            Elapsed: elapsed,
+            Metrics: BuildMetrics(),
+            LastError: _lastError);
+    }
+
+    public void ResetToIdle()
+    {
+        _state = StudySessionRuntimeState.Idle;
+        _sessionId = null;
+        _label = string.Empty;
+        _startedAt = null;
+        _endedAt = null;
+        _lastError = string.Empty;
+        _slices.Clear();
+        _sumEffectiveMs = 0;
+        _sumWeightedScore = 0;
+        _sumWeightedOverRatio = 0;
+        _totalSegments = 0;
+        _minScore = 100;
+        _maxScore = 0;
+        _currentScore = 0;
+    }
+
+    private StudySessionMetrics BuildMetrics()
+    {
+        var avgScore = _sumEffectiveMs <= 0 ? 0 : _sumWeightedScore / _sumEffectiveMs;
+        var avgOverRatio = _sumEffectiveMs <= 0 ? 0 : _sumWeightedOverRatio / _sumEffectiveMs;
+        var minScore = _slices.Count == 0 ? 0 : _minScore;
+        var maxScore = _slices.Count == 0 ? 0 : _maxScore;
+        return new StudySessionMetrics(
+            CurrentScore: Math.Round(_currentScore, 2),
+            AvgScore: Math.Round(avgScore, 2),
+            MinScore: Math.Round(minScore, 2),
+            MaxScore: Math.Round(maxScore, 2),
+            WeightedOverRatioDbfs: Math.Round(avgOverRatio, 4),
+            TotalSegmentCount: _totalSegments,
+            EffectiveDuration: TimeSpan.FromMilliseconds(_sumEffectiveMs),
+            SliceCount: _slices.Count);
+    }
+}
diff --git a/LanMontainDesktop/Services/StudyAnalyticsService.cs b/LanMontainDesktop/Services/StudyAnalyticsService.cs
new file mode 100644
index 0000000..620418d
--- /dev/null
+++ b/LanMontainDesktop/Services/StudyAnalyticsService.cs
@@ -0,0 +1,493 @@
+using System;
+using System.Threading;
+using LanMontainDesktop.Models;
+
+namespace LanMontainDesktop.Services;
+
+public static class StudyAnalyticsServiceFactory
+{
+    private static readonly Lazy<IStudyAnalyticsService> SharedService = new(
+        () => new StudyAnalyticsService(),
+        isThreadSafe: true);
+
+    public static IStudyAnalyticsService CreateDefault()
+    {
+        return SharedService.Value;
+    }
+}
+
+public sealed class StudyAnalyticsService : IStudyAnalyticsService
+{
+    private readonly object _syncRoot = new();
+    private readonly IAudioRecorderService _audioRecorderService;
+    private readonly Timer _samplingTimer;
+    private readonly NoiseFramePipeline _pipeline;
+    private readonly SessionAccumulator _sessionAccumulator = new();
+
+    private StudyAnalyticsConfig _config = new();
+    private StudyAnalyticsRuntimeState _state;
+    private NoiseStreamStatus _streamStatus = NoiseStreamStatus.Initializing;
+    private StudyDataMode _dataMode = StudyDataMode.Realtime;
+    private NoiseRealtimePoint? _latestRealtime;
+    private NoiseSliceSummary? _latestSlice;
+    private StudySessionReport? _lastSessionReport;
+    private string _lastError = string.Empty;
+    private bool _disposed;
+
+    public StudyAnalyticsService(IAudioRecorderService? audioRecorderService = null)
+    {
+        _audioRecorderService = audioRecorderService ?? AudioRecorderServiceFactory.CreateDefault();
+        _pipeline = new NoiseFramePipeline(_config);
+        _samplingTimer = new Timer(OnSamplingTick, null, Timeout.Infinite, Timeout.Infinite);
+
+        var audioSnapshot = _audioRecorderService.GetSnapshot();
+        if (audioSnapshot.IsSupported)
+        {
+            _state = StudyAnalyticsRuntimeState.Ready;
+            _streamStatus = NoiseStreamStatus.Quiet;
+            _lastError = string.Empty;
+        }
+        else
+        {
+            _state = StudyAnalyticsRuntimeState.Unsupported;
+            _streamStatus = NoiseStreamStatus.Error;
+            _lastError = audioSnapshot.LastError;
+        }
+    }
+
+    public event EventHandler<StudyAnalyticsSnapshotChangedEventArgs>? SnapshotUpdated;
+
+    public event EventHandler<NoiseSliceClosedEventArgs>? SliceClosed;
+
+    public event EventHandler<StudySessionCompletedEventArgs>? SessionCompleted;
+
+    public StudyAnalyticsSnapshot GetSnapshot()
+    {
+        lock (_syncRoot)
+        {
+            return BuildSnapshotLocked(DateTimeOffset.UtcNow);
+        }
+    }
+
+    public StudyAnalyticsConfig GetConfig()
+    {
+        lock (_syncRoot)
+        {
+            return _config;
+        }
+    }
+
+    public void UpdateConfig(StudyAnalyticsConfig config)
+    {
+        StudyAnalyticsSnapshot snapshot;
+        lock (_syncRoot)
+        {
+            ThrowIfDisposedLocked();
+            _config = NormalizeConfig(config);
+            _pipeline.UpdateConfig(_config);
+            if (_state == StudyAnalyticsRuntimeState.Running)
+            {
+                StartTimerLocked();
+            }
+
+            _latestSlice = null;
+            UpdateDataModeLocked();
+            snapshot = BuildSnapshotLocked(DateTimeOffset.UtcNow);
+        }
+
+        SnapshotUpdated?.Invoke(this, new StudyAnalyticsSnapshotChangedEventArgs(snapshot));
+    }
+
+    public bool StartOrResumeMonitoring()
+    {
+        StudyAnalyticsSnapshot snapshot;
+        bool started;
+        lock (_syncRoot)
+        {
+            ThrowIfDisposedLocked();
+            started = TryStartMonitoringLocked();
+            snapshot = BuildSnapshotLocked(DateTimeOffset.UtcNow);
+        }
+
+        SnapshotUpdated?.Invoke(this, new StudyAnalyticsSnapshotChangedEventArgs(snapshot));
+        return started;
+    }
+
+    public bool PauseMonitoring()
+    {
+        StudyAnalyticsSnapshot snapshot;
+        bool paused;
+        lock (_syncRoot)
+        {
+            ThrowIfDisposedLocked();
+            if (_state != StudyAnalyticsRuntimeState.Running)
+            {
+                return false;
+            }
+
+            if (!_audioRecorderService.Pause())
+            {
+                _state = StudyAnalyticsRuntimeState.Error;
+                _streamStatus = NoiseStreamStatus.Error;
+                _lastError = _audioRecorderService.GetSnapshot().LastError;
+                snapshot = BuildSnapshotLocked(DateTimeOffset.UtcNow);
+                paused = false;
+            }
+            else
+            {
+                StopTimerLocked();
+                _state = StudyAnalyticsRuntimeState.Paused;
+                _lastError = string.Empty;
+                UpdateDataModeLocked();
+                snapshot = BuildSnapshotLocked(DateTimeOffset.UtcNow);
+                paused = true;
+            }
+        }
+
+        SnapshotUpdated?.Invoke(this, new StudyAnalyticsSnapshotChangedEventArgs(snapshot));
+        return paused;
+    }
+
+    public bool StopMonitoring()
+    {
+        StudyAnalyticsSnapshot snapshot;
+        StudySessionReport? finishedReport = null;
+        lock (_syncRoot)
+        {
+            ThrowIfDisposedLocked();
+            if (_state is StudyAnalyticsRuntimeState.Unsupported)
+            {
+                return false;
+            }
+
+            _audioRecorderService.Discard();
+            StopTimerLocked();
+            _pipeline.Reset();
+            _latestRealtime = null;
+            _latestSlice = null;
+            _state = StudyAnalyticsRuntimeState.Ready;
+            _streamStatus = NoiseStreamStatus.Quiet;
+            _lastError = string.Empty;
+
+            if (_sessionAccumulator.IsRunning)
+            {
+                finishedReport = _sessionAccumulator.Stop(DateTimeOffset.UtcNow);
+                _lastSessionReport = finishedReport;
+            }
+
+            UpdateDataModeLocked();
+            snapshot = BuildSnapshotLocked(DateTimeOffset.UtcNow);
+        }
+
+        if (finishedReport is not null)
+        {
+            SessionCompleted?.Invoke(this, new StudySessionCompletedEventArgs(finishedReport));
+        }
+
+        SnapshotUpdated?.Invoke(this, new StudyAnalyticsSnapshotChangedEventArgs(snapshot));
+        return true;
+    }
+
+    public bool StartStudySession(StudySessionOptions? options = null)
+    {
+        StudyAnalyticsSnapshot snapshot;
+        bool started;
+        lock (_syncRoot)
+        {
+            ThrowIfDisposedLocked();
+            if (_sessionAccumulator.IsRunning)
+            {
+                return false;
+            }
+
+            if (!TryStartMonitoringLocked())
+            {
+                snapshot = BuildSnapshotLocked(DateTimeOffset.UtcNow);
+                started = false;
+            }
+            else
+            {
+                var normalizedOptions = options ?? new StudySessionOptions();
+                if (!_sessionAccumulator.Start(DateTimeOffset.UtcNow, normalizedOptions))
+                {
+                    return false;
+                }
+
+                _lastSessionReport = null;
+                UpdateDataModeLocked();
+                snapshot = BuildSnapshotLocked(DateTimeOffset.UtcNow);
+                started = true;
+            }
+        }
+
+        SnapshotUpdated?.Invoke(this, new StudyAnalyticsSnapshotChangedEventArgs(snapshot));
+        return started;
+    }
+
+    public bool StopStudySession()
+    {
+        StudySessionReport? report;
+        StudyAnalyticsSnapshot snapshot;
+        lock (_syncRoot)
+        {
+            ThrowIfDisposedLocked();
+            report = _sessionAccumulator.Stop(DateTimeOffset.UtcNow);
+            if (report is null)
+            {
+                return false;
+            }
+
+            _lastSessionReport = report;
+            UpdateDataModeLocked();
+            snapshot = BuildSnapshotLocked(DateTimeOffset.UtcNow);
+        }
+
+        SessionCompleted?.Invoke(this, new StudySessionCompletedEventArgs(report));
+        SnapshotUpdated?.Invoke(this, new StudyAnalyticsSnapshotChangedEventArgs(snapshot));
+        return true;
+    }
+
+    public bool CancelStudySession()
+    {
+        StudyAnalyticsSnapshot snapshot;
+        lock (_syncRoot)
+        {
+            ThrowIfDisposedLocked();
+            if (!_sessionAccumulator.Cancel())
+            {
+                return false;
+            }
+
+            UpdateDataModeLocked();
+            snapshot = BuildSnapshotLocked(DateTimeOffset.UtcNow);
+        }
+
+        SnapshotUpdated?.Invoke(this, new StudyAnalyticsSnapshotChangedEventArgs(snapshot));
+        return true;
+    }
+
+    public void ClearLastSessionReport()
+    {
+        StudyAnalyticsSnapshot snapshot;
+        lock (_syncRoot)
+        {
+            ThrowIfDisposedLocked();
+            _lastSessionReport = null;
+            UpdateDataModeLocked();
+            snapshot = BuildSnapshotLocked(DateTimeOffset.UtcNow);
+        }
+
+        SnapshotUpdated?.Invoke(this, new StudyAnalyticsSnapshotChangedEventArgs(snapshot));
+    }
+
+    public void Dispose()
+    {
+        lock (_syncRoot)
+        {
+            if (_disposed)
+            {
+                return;
+            }
+
+            _disposed = true;
+            StopTimerLocked();
+            _samplingTimer.Dispose();
+        }
+    }
+
+    private void OnSamplingTick(object? state)
+    {
+        StudyAnalyticsSnapshot? snapshot = null;
+        NoiseSliceSummary? closedSlice = null;
+        lock (_syncRoot)
+        {
+            if (_disposed || _state != StudyAnalyticsRuntimeState.Running)
+            {
+                return;
+            }
+
+            var audioSnapshot = _audioRecorderService.GetSnapshot();
+            if (!audioSnapshot.IsSupported)
+            {
+                _state = StudyAnalyticsRuntimeState.Unsupported;
+                _streamStatus = NoiseStreamStatus.Error;
+                _lastError = audioSnapshot.LastError;
+                StopTimerLocked();
+                snapshot = BuildSnapshotLocked(DateTimeOffset.UtcNow);
+            }
+            else if (audioSnapshot.State == AudioRecorderRuntimeState.Error)
+            {
+                _state = StudyAnalyticsRuntimeState.Error;
+                _streamStatus = NoiseStreamStatus.Error;
+                _lastError = string.IsNullOrWhiteSpace(audioSnapshot.LastError)
+                    ? "Audio recorder returned an error state."
+                    : audioSnapshot.LastError;
+                StopTimerLocked();
+                snapshot = BuildSnapshotLocked(DateTimeOffset.UtcNow);
+            }
+            else
+            {
+                var now = DateTimeOffset.UtcNow;
+                var rms = Math.Clamp(audioSnapshot.InputLevel, 0, 1);
+                var dbfs = ConvertInputLevelToDbfs(rms, _config.SilenceFloorDbfs);
+                var displayDb = ComputeDisplayDb(dbfs, _config);
+                var tickResult = _pipeline.AddFrame(
+                    now,
+                    rms,
+                    dbfs,
+                    displayDb,
+                    peak: rms);
+
+                _latestRealtime = tickResult.RealtimePoint;
+                _streamStatus = tickResult.RealtimePoint.IsOverThreshold
+                    ? NoiseStreamStatus.Noisy
+                    : NoiseStreamStatus.Quiet;
+
+                if (tickResult.ClosedSlice is not null)
+                {
+                    closedSlice = tickResult.ClosedSlice;
+                    _latestSlice = closedSlice;
+                    if (_sessionAccumulator.IsRunning)
+                    {
+                        _sessionAccumulator.AddSlice(closedSlice);
+                    }
+                }
+
+                _lastError = string.Empty;
+                UpdateDataModeLocked();
+                snapshot = BuildSnapshotLocked(now);
+            }
+        }
+
+        if (snapshot is not null)
+        {
+            SnapshotUpdated?.Invoke(this, new StudyAnalyticsSnapshotChangedEventArgs(snapshot));
+        }
+
+        if (closedSlice is not null)
+        {
+            SliceClosed?.Invoke(this, new NoiseSliceClosedEventArgs(closedSlice));
+        }
+    }
+
+    private bool TryStartMonitoringLocked()
+    {
+        if (_state == StudyAnalyticsRuntimeState.Unsupported)
+        {
+            return false;
+        }
+
+        if (_state == StudyAnalyticsRuntimeState.Running)
+        {
+            return true;
+        }
+
+        if (!_audioRecorderService.StartOrResume())
+        {
+            _state = StudyAnalyticsRuntimeState.Error;
+            _streamStatus = NoiseStreamStatus.Error;
+            _lastError = _audioRecorderService.GetSnapshot().LastError;
+            return false;
+        }
+
+        _state = StudyAnalyticsRuntimeState.Running;
+        _streamStatus = NoiseStreamStatus.Quiet;
+        _lastError = string.Empty;
+        StartTimerLocked();
+        UpdateDataModeLocked();
+        return true;
+    }
+
+    private void StartTimerLocked()
+    {
+        _samplingTimer.Change(
+            dueTime: TimeSpan.Zero,
+            period: TimeSpan.FromMilliseconds(_config.FrameMs));
+    }
+
+    private void StopTimerLocked()
+    {
+        _samplingTimer.Change(Timeout.Infinite, Timeout.Infinite);
+    }
+
+    private void UpdateDataModeLocked()
+    {
+        if (_sessionAccumulator.IsRunning)
+        {
+            _dataMode = StudyDataMode.SessionRunning;
+            return;
+        }
+
+        _dataMode = _lastSessionReport is null
+            ? StudyDataMode.Realtime
+            : StudyDataMode.SessionReport;
+    }
+
+    private StudyAnalyticsSnapshot BuildSnapshotLocked(DateTimeOffset now)
+    {
+        return new StudyAnalyticsSnapshot(
+            State: _state,
+            StreamStatus: _streamStatus,
+            DataMode: _dataMode,
+            Config: _config,
+            LatestRealtimePoint: _latestRealtime,
+            LatestSlice: _latestSlice,
+            RealtimeBuffer: _pipeline.GetRealtimeBufferSnapshot(),
+            Session: _sessionAccumulator.GetSnapshot(now),
+            LastSessionReport: _lastSessionReport,
+            LastError: _lastError);
+    }
+
+    private static double ConvertInputLevelToDbfs(double level, double silenceFloorDbfs)
+    {
+        var clampedLevel = Math.Clamp(level, 0, 1);
+        if (clampedLevel <= 1e-5)
+        {
+            return silenceFloorDbfs;
+        }
+
+        var dbfs = 20d * Math.Log10(clampedLevel);
+        return Math.Clamp(dbfs, silenceFloorDbfs, 0);
+    }
+
+    private static double ComputeDisplayDb(double dbfs, StudyAnalyticsConfig config)
+    {
+        // Keep score and calibration decoupled: scoring uses dBFS, display maps it to user-facing dB.
+        var referenceDelta = dbfs - config.ScoreThresholdDbfs;
+        return Math.Round(config.BaselineDb + referenceDelta, 2);
+    }
+
+    private static StudyAnalyticsConfig NormalizeConfig(StudyAnalyticsConfig config)
+    {
+        var frameMs = Math.Clamp(config.FrameMs, 20, 250);
+        var sliceSec = Math.Clamp(config.SliceSec, 5, 600);
+        var threshold = Math.Clamp(config.ScoreThresholdDbfs, -100, -5);
+        var mergeGapMs = Math.Clamp(config.SegmentMergeGapMs, 100, 4000);
+        var maxSegments = Math.Clamp(config.MaxSegmentsPerMin, 1, 40);
+        var silenceFloor = Math.Clamp(config.SilenceFloorDbfs, -100, -20);
+        var baselineDb = Math.Clamp(config.BaselineDb, 20, 90);
+        var avgWindowSec = Math.Clamp(config.AvgWindowSec, 1, 8);
+        var ringCapacity = Math.Clamp(config.RealtimeBufferCapacity, 60, 1200);
+
+        return config with
+        {
+            FrameMs = frameMs,
+            SliceSec = sliceSec,
+            ScoreThresholdDbfs = threshold,
+            SegmentMergeGapMs = mergeGapMs,
+            MaxSegmentsPerMin = maxSegments,
+            SilenceFloorDbfs = silenceFloor,
+            BaselineDb = baselineDb,
+            AvgWindowSec = avgWindowSec,
+            RealtimeBufferCapacity = ringCapacity
+        };
+    }
+
+    private void ThrowIfDisposedLocked()
+    {
+        if (_disposed)
+        {
+            throw new ObjectDisposedException(nameof(StudyAnalyticsService));
+        }
+    }
+}
diff --git a/LanMontainDesktop/Views/Components/BrowserWidget.axaml b/LanMontainDesktop/Views/Components/BrowserWidget.axaml
new file mode 100644
index 0000000..858a224
--- /dev/null
+++ b/LanMontainDesktop/Views/Components/BrowserWidget.axaml
@@ -0,0 +1,73 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:fi="using:FluentIcons.Avalonia"
+             xmlns:webview="clr-namespace:AvaloniaWebView;assembly=Avalonia.WebView"
+             mc:Ignorable="d"
+             d:DesignWidth="480"
+             d:DesignHeight="480"
+             x:Class="LanMontainDesktop.Views.Components.BrowserWidget">
+
+    <Border x:Name="RootBorder"
+            Background="#F4F7FC"
+            CornerRadius="24"
+            ClipToBounds="True"
+            Padding="10">
+        <Grid RowDefinitions="*,Auto"
+              RowSpacing="8">
+            <Border x:Name="WebViewHostBorder"
+                    Grid.Row="0"
+                    CornerRadius="16"
+                    ClipToBounds="True"
+                    Background="#FFFFFFFF"
+                    BorderBrush="#22000000"
+                    BorderThickness="1">
+                <webview:WebView x:Name="BrowserWebView" />
+            </Border>
+
+            <Border x:Name="AddressBarBorder"
+                    Grid.Row="1"
+                    CornerRadius="14"
+                    Background="#ECF2FA"
+                    BorderBrush="#22000000"
+                    BorderThickness="1"
+                    Padding="8,6">
+                <Grid ColumnDefinitions="Auto,*,Auto"
+                      ColumnSpacing="8">
+                    <Button x:Name="RefreshButton"
+                            Grid.Column="0"
+                            Width="34"
+                            Height="34"
+                            Padding="0"
+                            CornerRadius="17"
+                            ToolTip.Tip="Refresh"
+                            Click="OnRefreshButtonClick">
+                        <fi:SymbolIcon Symbol="ArrowClockwise"
+                                       FontSize="15" />
+                    </Button>
+
+                    <TextBox x:Name="AddressTextBox"
+                             Grid.Column="1"
+                             VerticalContentAlignment="Center"
+                             HorizontalContentAlignment="Left"
+                             Watermark="https://example.com"
+                             Text="https://www.bing.com"
+                             KeyDown="OnAddressTextBoxKeyDown" />
+
+                    <Button x:Name="GoButton"
+                            Grid.Column="2"
+                            Width="34"
+                            Height="34"
+                            Padding="0"
+                            CornerRadius="17"
+                            ToolTip.Tip="Go"
+                            Click="OnGoButtonClick">
+                        <fi:SymbolIcon Symbol="ArrowRight"
+                                       FontSize="15" />
+                    </Button>
+                </Grid>
+            </Border>
+        </Grid>
+    </Border>
+</UserControl>
diff --git a/LanMontainDesktop/Views/Components/BrowserWidget.axaml.cs b/LanMontainDesktop/Views/Components/BrowserWidget.axaml.cs
new file mode 100644
index 0000000..6a16c99
--- /dev/null
+++ b/LanMontainDesktop/Views/Components/BrowserWidget.axaml.cs
@@ -0,0 +1,291 @@
+using System;
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia.Interactivity;
+using Avalonia.Media;
+using Avalonia.Styling;
+using AvaloniaWebView;
+using WebViewCore.Events;
+
+namespace LanMontainDesktop.Views.Components;
+
+public partial class BrowserWidget : UserControl, IDesktopComponentWidget
+    , IDesktopPageVisibilityAwareComponentWidget
+{
+    private static readonly Uri DefaultHomeUri = new("https://www.bing.com");
+    private double _currentCellSize = 48;
+    private bool? _isNightModeApplied;
+    private Uri _lastKnownUri = DefaultHomeUri;
+    private bool _isOnActiveDesktopPage;
+    private bool _isEditMode;
+    private bool _isWebViewActive = true;
+
+    public BrowserWidget()
+    {
+        InitializeComponent();
+        SizeChanged += OnSizeChanged;
+        ActualThemeVariantChanged += OnActualThemeVariantChanged;
+        AttachedToVisualTree += OnAttachedToVisualTree;
+        DetachedFromVisualTree += OnDetachedFromVisualTree;
+
+        ApplyCellSize(_currentCellSize);
+        ApplyTheme(force: true);
+        BrowserWebView.NavigationStarting += OnBrowserWebViewNavigationStarting;
+        UpdateWebViewActiveState();
+        NavigateTo(DefaultHomeUri);
+    }
+
+    public void ApplyCellSize(double cellSize)
+    {
+        _currentCellSize = Math.Max(1, cellSize);
+
+        RootBorder.CornerRadius = new CornerRadius(Math.Clamp(_currentCellSize * 0.34, 12, 28));
+        RootBorder.Padding = new Thickness(
+            Math.Clamp(_currentCellSize * 0.20, 8, 18));
+
+        WebViewHostBorder.CornerRadius = new CornerRadius(Math.Clamp(_currentCellSize * 0.24, 10, 22));
+        AddressBarBorder.CornerRadius = new CornerRadius(Math.Clamp(_currentCellSize * 0.22, 10, 20));
+        AddressBarBorder.Padding = new Thickness(8, 6);
+
+        var rowSpacing = 8d;
+        if (RootBorder.Child is Grid rootGrid)
+        {
+            rootGrid.RowSpacing = rowSpacing;
+        }
+
+        var buttonSize = Math.Clamp(_currentCellSize * 0.72, 30, 36);
+        var buttonCorner = buttonSize * 0.5;
+        var iconSize = Math.Clamp(buttonSize * 0.44, 14, 16);
+        foreach (var button in new[] { RefreshButton, GoButton })
+        {
+            button.Width = buttonSize;
+            button.Height = buttonSize;
+            button.CornerRadius = new CornerRadius(buttonCorner);
+        }
+
+        if (RefreshButton.Content is FluentIcons.Avalonia.SymbolIcon refreshIcon)
+        {
+            refreshIcon.FontSize = iconSize;
+        }
+
+        if (GoButton.Content is FluentIcons.Avalonia.SymbolIcon goIcon)
+        {
+            goIcon.FontSize = iconSize;
+        }
+
+        AddressTextBox.FontSize = Math.Clamp(_currentCellSize * 0.30, 12, 15);
+        AddressTextBox.Height = buttonSize;
+    }
+
+    private void OnAttachedToVisualTree(object? sender, VisualTreeAttachmentEventArgs e)
+    {
+        ApplyTheme(force: true);
+        UpdateWebViewActiveState();
+    }
+
+    private void OnDetachedFromVisualTree(object? sender, VisualTreeAttachmentEventArgs e)
+    {
+        _isOnActiveDesktopPage = false;
+        UpdateWebViewActiveState();
+    }
+
+    private void OnSizeChanged(object? sender, SizeChangedEventArgs e)
+    {
+        ApplyCellSize(_currentCellSize);
+    }
+
+    private void OnActualThemeVariantChanged(object? sender, EventArgs e)
+    {
+        ApplyTheme(force: false);
+    }
+
+    private void ApplyTheme(bool force)
+    {
+        var isNightMode = ResolveIsNightMode();
+        if (!force && _isNightModeApplied.HasValue && _isNightModeApplied.Value == isNightMode)
+        {
+            return;
+        }
+
+        _isNightModeApplied = isNightMode;
+        RootBorder.Background = new SolidColorBrush(isNightMode ? Color.Parse("#FF141A24") : Color.Parse("#FFF4F7FC"));
+        WebViewHostBorder.Background = new SolidColorBrush(isNightMode ? Color.Parse("#FF0A0E15") : Color.Parse("#FFFFFFFF"));
+        WebViewHostBorder.BorderBrush = new SolidColorBrush(isNightMode ? Color.Parse("#33FFFFFF") : Color.Parse("#22000000"));
+        AddressBarBorder.Background = new SolidColorBrush(isNightMode ? Color.Parse("#1BFFFFFF") : Color.Parse("#ECF2FA"));
+        AddressBarBorder.BorderBrush = new SolidColorBrush(isNightMode ? Color.Parse("#26FFFFFF") : Color.Parse("#22000000"));
+
+        var idleBackground = new SolidColorBrush(isNightMode ? Color.Parse("#24FFFFFF") : Color.Parse("#DCE6F5"));
+        var idleForeground = new SolidColorBrush(isNightMode ? Color.Parse("#FFE5E7EB") : Color.Parse("#FF1E293B"));
+
+        foreach (var button in new[] { RefreshButton, GoButton })
+        {
+            button.Background = idleBackground;
+            button.Foreground = idleForeground;
+            button.BorderThickness = new Thickness(0);
+        }
+
+        AddressTextBox.Background = new SolidColorBrush(isNightMode ? Color.Parse("#1F000000") : Color.Parse("#FFFFFFFF"));
+        AddressTextBox.BorderBrush = new SolidColorBrush(isNightMode ? Color.Parse("#2FFFFFFF") : Color.Parse("#22000000"));
+        AddressTextBox.Foreground = idleForeground;
+        AddressTextBox.CaretBrush = idleForeground;
+    }
+
+    private bool ResolveIsNightMode()
+    {
+        if (ActualThemeVariant == ThemeVariant.Dark)
+        {
+            return true;
+        }
+
+        if (ActualThemeVariant == ThemeVariant.Light)
+        {
+            return false;
+        }
+
+        if (this.TryFindResource("AdaptiveSurfaceBaseBrush", out var value) &&
+            value is ISolidColorBrush brush)
+        {
+            return CalculateRelativeLuminance(brush.Color) < 0.45;
+        }
+
+        return false;
+    }
+
+    private static double CalculateRelativeLuminance(Color color)
+    {
+        static double ToLinear(double channel)
+        {
+            return channel <= 0.03928
+                ? channel / 12.92
+                : Math.Pow((channel + 0.055) / 1.055, 2.4);
+        }
+
+        var red = ToLinear(color.R / 255d);
+        var green = ToLinear(color.G / 255d);
+        var blue = ToLinear(color.B / 255d);
+        return (0.2126 * red) + (0.7152 * green) + (0.0722 * blue);
+    }
+
+    private void OnRefreshButtonClick(object? sender, RoutedEventArgs e)
+    {
+        if (!_isWebViewActive)
+        {
+            return;
+        }
+
+        if (BrowserWebView.Url is not null)
+        {
+            BrowserWebView.Reload();
+            return;
+        }
+
+        NavigateTo(DefaultHomeUri);
+    }
+
+    private void OnGoButtonClick(object? sender, RoutedEventArgs e)
+    {
+        NavigateFromAddressBar();
+    }
+
+    private void OnAddressTextBoxKeyDown(object? sender, KeyEventArgs e)
+    {
+        if (e.Key != Key.Enter)
+        {
+            return;
+        }
+
+        NavigateFromAddressBar();
+        e.Handled = true;
+    }
+
+    private void NavigateFromAddressBar()
+    {
+        var target = TryNormalizeUri(AddressTextBox.Text);
+        if (target is null)
+        {
+            return;
+        }
+
+        NavigateTo(target);
+    }
+
+    private void NavigateTo(Uri uri)
+    {
+        _lastKnownUri = uri;
+        AddressTextBox.Text = uri.ToString();
+        if (_isWebViewActive)
+        {
+            BrowserWebView.Url = uri;
+        }
+    }
+
+    private void OnBrowserWebViewNavigationStarting(object? sender, WebViewUrlLoadingEventArg e)
+    {
+        if (e.Url is null)
+        {
+            return;
+        }
+
+        _lastKnownUri = e.Url;
+        AddressTextBox.Text = e.Url.ToString();
+    }
+
+    public void SetDesktopPageContext(bool isOnActivePage, bool isEditMode)
+    {
+        _isOnActiveDesktopPage = isOnActivePage;
+        _isEditMode = isEditMode;
+        UpdateWebViewActiveState();
+    }
+
+    private void UpdateWebViewActiveState()
+    {
+        var shouldBeActive = _isOnActiveDesktopPage && !_isEditMode && IsVisible;
+        if (_isWebViewActive == shouldBeActive)
+        {
+            return;
+        }
+
+        _isWebViewActive = shouldBeActive;
+        if (!_isWebViewActive)
+        {
+            if (BrowserWebView.Url is Uri currentUri)
+            {
+                _lastKnownUri = currentUri;
+            }
+
+            BrowserWebView.IsHitTestVisible = false;
+            BrowserWebView.IsVisible = false;
+            BrowserWebView.Url = null;
+            return;
+        }
+
+        BrowserWebView.IsVisible = true;
+        BrowserWebView.IsHitTestVisible = true;
+        BrowserWebView.Url = _lastKnownUri;
+    }
+
+    private static Uri? TryNormalizeUri(string? rawText)
+    {
+        if (string.IsNullOrWhiteSpace(rawText))
+        {
+            return null;
+        }
+
+        var candidate = rawText.Trim();
+        if (!candidate.Contains("://", StringComparison.Ordinal))
+        {
+            candidate = $"https://{candidate}";
+        }
+
+        if (!Uri.TryCreate(candidate, UriKind.Absolute, out var uri))
+        {
+            return null;
+        }
+
+        return uri.Scheme.Equals(Uri.UriSchemeHttp, StringComparison.OrdinalIgnoreCase) ||
+               uri.Scheme.Equals(Uri.UriSchemeHttps, StringComparison.OrdinalIgnoreCase)
+            ? uri
+            : null;
+    }
+}
diff --git a/LanMontainDesktop/Views/Components/DesktopComponentRuntimeRegistry.cs b/LanMontainDesktop/Views/Components/DesktopComponentRuntimeRegistry.cs
index d1e267d..04231cc 100644
--- a/LanMontainDesktop/Views/Components/DesktopComponentRuntimeRegistry.cs
+++ b/LanMontainDesktop/Views/Components/DesktopComponentRuntimeRegistry.cs
@@ -185,6 +185,11 @@ public sealed class DesktopComponentRuntimeRegistry
                     "component.blackboard_landscape",
                     () => new WhiteboardWidget(baseWidthCells: 4),
                     cellSize => Math.Clamp(cellSize * 0.24, 10, 24)),
+                new DesktopComponentRuntimeRegistration(
+                    BuiltInComponentIds.DesktopBrowser,
+                    "component.browser",
+                    () => new BrowserWidget(),
+                    cellSize => Math.Clamp(cellSize * 0.24, 10, 24)),
                 new DesktopComponentRuntimeRegistration(
                     BuiltInComponentIds.HolidayCalendar,
                     "component.holiday_calendar",
diff --git a/LanMontainDesktop/Views/Components/ExtendedWeatherWidget.axaml b/LanMontainDesktop/Views/Components/ExtendedWeatherWidget.axaml
index a47eb1c..a8f73c2 100644
--- a/LanMontainDesktop/Views/Components/ExtendedWeatherWidget.axaml
+++ b/LanMontainDesktop/Views/Components/ExtendedWeatherWidget.axaml
@@ -96,7 +96,7 @@
                               VerticalAlignment="Center"
                               Margin="0,2,0,0"
                               RowDefinitions="Auto,Auto"
-                              ColumnDefinitions="Auto,*"
+                              ColumnDefinitions="*,Auto"
                               RowSpacing="2"
                               ColumnSpacing="8">
                             <Border x:Name="CityInfoBadge"
@@ -115,12 +115,27 @@
                                            MaxLines="1" />
                             </Border>
 
-                            <Border x:Name="RangeInfoBadge"
+                            <Border x:Name="ConditionInfoBadge"
                                     Grid.Row="1"
                                     Grid.Column="0"
                                     Background="Transparent"
                                     CornerRadius="0"
                                     Padding="0">
+                                <TextBlock x:Name="ConditionTextBlock"
+                                           Text="雾"
+                                           FontSize="20"
+                                           FontWeight="SemiBold"
+                                           TextAlignment="Left"
+                                           TextTrimming="CharacterEllipsis"
+                                           MaxLines="1" />
+                            </Border>
+
+                            <Border x:Name="RangeInfoBadge"
+                                    Grid.Row="1"
+                                    Grid.Column="1"
+                                    Background="Transparent"
+                                    CornerRadius="0"
+                                    Padding="0">
                                 <TextBlock x:Name="RangeTextBlock"
                                            Text="11°/4°"
                                            FontSize="20"
@@ -131,21 +146,6 @@
                                            MaxLines="1"
                                            Opacity="0.92" />
                             </Border>
-
-                            <Border x:Name="ConditionInfoBadge"
-                                    Grid.Row="1"
-                                    Grid.Column="1"
-                                    Background="Transparent"
-                                    CornerRadius="0"
-                                    Padding="0">
-                                <TextBlock x:Name="ConditionTextBlock"
-                                           Text="雾"
-                                           FontSize="20"
-                                           FontWeight="SemiBold"
-                                           TextAlignment="Left"
-                                           TextTrimming="CharacterEllipsis"
-                                           MaxLines="1" />
-                            </Border>
                         </Grid>
 
                         <Image x:Name="WeatherIconImage"
diff --git a/LanMontainDesktop/Views/Components/ExtendedWeatherWidget.axaml.cs b/LanMontainDesktop/Views/Components/ExtendedWeatherWidget.axaml.cs
index b6b6ff7..c33efa7 100644
--- a/LanMontainDesktop/Views/Components/ExtendedWeatherWidget.axaml.cs
+++ b/LanMontainDesktop/Views/Components/ExtendedWeatherWidget.axaml.cs
@@ -426,22 +426,30 @@ public partial class ExtendedWeatherWidget : UserControl, IDesktopComponentWidge
         var compactness = Math.Clamp((0.90 - scale) / 0.55, 0, 1);
         LayoutRoot.RowSpacing = Math.Clamp(height * 0.012, 5, 13);
         SummaryGrid.ColumnSpacing = Math.Clamp(width * 0.016, 8, 22);
+        SummaryInfoGrid.ColumnSpacing = Math.Clamp(width * 0.010, 6, 14);
+        SummaryInfoGrid.RowSpacing = Math.Clamp(height * 0.003, 1, 4);
         HourlyGrid.ColumnSpacing = Math.Clamp(width * 0.007, 3, 10);
         DailyGrid.RowSpacing = Math.Clamp(height * 0.009, 4, 10);
         TemperatureTextBlock.FontSize = Math.Clamp(height * 0.18, 52, 154);
         TemperatureTextBlock.FontWeight = ToVariableWeight(Lerp(300, 370, Math.Clamp((scale - 0.50) / 1.2, 0, 1)));
-        CityTextBlock.FontSize = Math.Clamp(height * 0.040, 12, 30);
-        ConditionTextBlock.FontSize = Math.Clamp(height * 0.046, 13, 34);
-        RangeTextBlock.FontSize = Math.Clamp(height * 0.043, 12, 32);
+        var cityFontSize = Math.Clamp(height * 0.040, 12, 30);
+        var topInfoFontSize = Math.Clamp(height * 0.044, 12, 32);
+        CityTextBlock.FontSize = cityFontSize;
+        ConditionTextBlock.FontSize = topInfoFontSize;
+        RangeTextBlock.FontSize = topInfoFontSize;
         CityTextBlock.FontWeight = ToVariableWeight(Lerp(520, 590, Math.Clamp((scale - 0.50) / 1.2, 0, 1)));
-        ConditionTextBlock.FontWeight = ToVariableWeight(Lerp(560, 630, Math.Clamp((scale - 0.50) / 1.2, 0, 1)));
-        RangeTextBlock.FontWeight = ToVariableWeight(Lerp(560, 620, Math.Clamp((scale - 0.50) / 1.2, 0, 1)));
+        var topInfoWeight = ToVariableWeight(Lerp(570, 630, Math.Clamp((scale - 0.50) / 1.2, 0, 1)));
+        ConditionTextBlock.FontWeight = topInfoWeight;
+        RangeTextBlock.FontWeight = topInfoWeight;
+        CityTextBlock.LineHeight = cityFontSize * 1.10;
+        ConditionTextBlock.LineHeight = topInfoFontSize * 1.08;
+        RangeTextBlock.LineHeight = topInfoFontSize * 1.08;
         var iconSize = Math.Clamp(height * 0.116, 36, 102);
         WeatherIconImage.Width = iconSize;
         WeatherIconImage.Height = iconSize;
-        ConditionTextBlock.MaxWidth = Math.Clamp(width * 0.20, 80, 240);
-        RangeTextBlock.MaxWidth = Math.Clamp(width * 0.20, 80, 240);
-        CityTextBlock.MaxWidth = Math.Clamp(width * 0.28, 90, 290);
+        ConditionTextBlock.MaxWidth = Math.Clamp(width * 0.24, 88, 280);
+        RangeTextBlock.MaxWidth = Math.Clamp(width * 0.17, 72, 210);
+        CityTextBlock.MaxWidth = Math.Clamp(width * 0.30, 96, 320);
 
         HourlyPanelBorder.Padding = new Thickness(0);
         HourlyPanelBorder.CornerRadius = new CornerRadius(0);
diff --git a/LanMontainDesktop/Views/Components/HolidayCalendarWidget.axaml b/LanMontainDesktop/Views/Components/HolidayCalendarWidget.axaml
index 9f656de..3ba1cd2 100644
--- a/LanMontainDesktop/Views/Components/HolidayCalendarWidget.axaml
+++ b/LanMontainDesktop/Views/Components/HolidayCalendarWidget.axaml
@@ -12,34 +12,46 @@
             CornerRadius="34"
             ClipToBounds="True"
             Padding="14">
-        <Viewbox Stretch="Uniform">
-            <Grid x:Name="LayoutRoot"
-                  Width="300"
-                  Height="300"
-                  RowDefinitions="Auto,Auto,Auto,Auto,Auto"
-                  RowSpacing="8">
-                <TextBlock x:Name="TitleTextBlock"
-                           Grid.Row="0"
-                           Text="Holiday countdown"
-                           FontSize="24"
-                           FontWeight="SemiBold"
-                           Foreground="#61697C"
-                           HorizontalAlignment="Center"
-                           Margin="0,10,0,0" />
+        <Grid x:Name="LayoutRoot"
+              RowDefinitions="1.1*,2.3*,0.62*,0.78*,0.95*"
+              RowSpacing="8">
+            <TextBlock x:Name="TitleTextBlock"
+                       Grid.Row="0"
+                       Text="Holiday countdown"
+                       FontSize="24"
+                       FontWeight="SemiBold"
+                       Foreground="#61697C"
+                       HorizontalAlignment="Center"
+                       VerticalAlignment="Bottom"
+                       TextAlignment="Center"
+                       TextTrimming="CharacterEllipsis"
+                       MaxLines="1"
+                       Margin="8,0,8,0" />
 
+            <Viewbox Grid.Row="1"
+                     Stretch="Uniform"
+                     StretchDirection="DownOnly"
+                     HorizontalAlignment="Stretch"
+                     VerticalAlignment="Center"
+                     Margin="8,0,8,0">
                 <TextBlock x:Name="CountTextBlock"
-                           Grid.Row="1"
                            Text="0"
                            FontFeatures="tnum"
-                           FontSize="120"
+                           FontSize="132"
                            FontWeight="Bold"
                            Foreground="#0A0A0A"
-                           HorizontalAlignment="Center" />
+                           HorizontalAlignment="Center"
+                           TextAlignment="Center" />
+            </Viewbox>
 
-                <Canvas Grid.Row="2"
-                        Width="260"
-                        Height="40"
-                        HorizontalAlignment="Center">
+            <Viewbox Grid.Row="2"
+                     Stretch="Uniform"
+                     StretchDirection="DownOnly"
+                     HorizontalAlignment="Stretch"
+                     VerticalAlignment="Center"
+                     Margin="14,0,14,0">
+                <Canvas Width="260"
+                        Height="40">
                     <Path Data="M 10,16 C 68,11 192,11 250,16"
                           Stroke="#1A73F0"
                           StrokeThickness="12"
@@ -60,38 +72,46 @@
                              Canvas.Top="27.5"
                              Opacity="0.35" />
                 </Canvas>
+            </Viewbox>
 
-                <Grid Grid.Row="3"
-                      ColumnDefinitions="*,Auto,*"
-                      Margin="8,0,8,0"
-                      VerticalAlignment="Center">
-                    <Border Grid.Column="0"
-                            Height="2"
-                            Margin="0,0,10,0"
-                            VerticalAlignment="Center"
-                            Background="#B0B9CB" />
-                    <TextBlock x:Name="DayUnitTextBlock"
-                               Grid.Column="1"
-                               Text="Days"
-                               FontSize="56"
-                               Foreground="#7D869A"
-                               FontWeight="Medium"
-                               VerticalAlignment="Center" />
-                    <Border Grid.Column="2"
-                            Height="2"
-                            Margin="10,0,0,0"
-                            VerticalAlignment="Center"
-                            Background="#B0B9CB" />
-                </Grid>
-
-                <TextBlock x:Name="DateTextBlock"
-                           Grid.Row="4"
-                           Text="2024-10-01"
-                           FontSize="34"
-                           Foreground="#596177"
-                           HorizontalAlignment="Center"
-                           Margin="0,2,0,8" />
+            <Grid Grid.Row="3"
+                  ColumnDefinitions="*,Auto,*"
+                  Margin="8,0,8,0"
+                  VerticalAlignment="Center">
+                <Border Grid.Column="0"
+                        Height="2"
+                        Margin="0,0,10,0"
+                        VerticalAlignment="Center"
+                        Background="#B0B9CB" />
+                <TextBlock x:Name="DayUnitTextBlock"
+                           Grid.Column="1"
+                           Text="Days"
+                           FontSize="52"
+                           Foreground="#7D869A"
+                           FontWeight="Medium"
+                           TextAlignment="Center"
+                           TextTrimming="CharacterEllipsis"
+                           MaxLines="1"
+                           VerticalAlignment="Center" />
+                <Border Grid.Column="2"
+                        Height="2"
+                        Margin="10,0,0,0"
+                        VerticalAlignment="Center"
+                        Background="#B0B9CB" />
             </Grid>
-        </Viewbox>
+
+            <TextBlock x:Name="DateTextBlock"
+                       Grid.Row="4"
+                       Text="2024-10-01"
+                       FontSize="32"
+                       Foreground="#596177"
+                       HorizontalAlignment="Stretch"
+                       VerticalAlignment="Center"
+                       TextAlignment="Center"
+                       TextWrapping="NoWrap"
+                       TextTrimming="CharacterEllipsis"
+                       MaxLines="1"
+                       Margin="8,0,8,0" />
+        </Grid>
     </Border>
 </UserControl>
diff --git a/LanMontainDesktop/Views/Components/HolidayCalendarWidget.axaml.cs b/LanMontainDesktop/Views/Components/HolidayCalendarWidget.axaml.cs
index e858f61..0fde704 100644
--- a/LanMontainDesktop/Views/Components/HolidayCalendarWidget.axaml.cs
+++ b/LanMontainDesktop/Views/Components/HolidayCalendarWidget.axaml.cs
@@ -4,6 +4,7 @@ using System.Threading;
 using System.Threading.Tasks;
 using Avalonia;
 using Avalonia.Controls;
+using Avalonia.Media;
 using Avalonia.Threading;
 using LanMontainDesktop.Services;
 
@@ -32,6 +33,7 @@ public partial class HolidayCalendarWidget : UserControl, IDesktopComponentWidge
         DetachedFromVisualTree += OnDetachedFromVisualTree;
         SizeChanged += OnSizeChanged;
 
+        ApplyCellSize(_currentCellSize);
         TriggerContentRefresh();
     }
 
@@ -142,6 +144,7 @@ public partial class HolidayCalendarWidget : UserControl, IDesktopComponentWidge
             CountTextBlock.Text = "--";
             DayUnitTextBlock.Text = isZh ? "\u5929" : "Days";
             DateTextBlock.Text = "--";
+            ApplyCellSize(_currentCellSize);
             return;
         }
 
@@ -195,28 +198,216 @@ public partial class HolidayCalendarWidget : UserControl, IDesktopComponentWidge
                 ? $"{holidayDateText} - make-up workday"
                 : holidayDateText;
         }
+
+        ApplyCellSize(_currentCellSize);
     }
 
     public void ApplyCellSize(double cellSize)
     {
         _currentCellSize = Math.Max(1, cellSize);
-        var scale = ResolveScale();
+        var width = Bounds.Width > 1 ? Bounds.Width : 220;
+        var height = Bounds.Height > 1 ? Bounds.Height : 220;
+        var shortSide = Math.Min(width, height);
+        var scale = ResolveScale(width, height);
+        var isCompact = width < 170 || height < 170;
+        var isUltraCompact = width < 130 || height < 130;
+        var titleUnits = GetDisplayUnits(TitleTextBlock.Text);
+        var dateUnits = GetDisplayUnits(DateTextBlock.Text);
+        var titleNeedsTwoLines = isUltraCompact || titleUnits >= (isCompact ? 13 : 17);
+        var dateNeedsTwoLines = isUltraCompact || dateUnits >= (isCompact ? 15 : 20);
 
-        RootBorder.CornerRadius = new CornerRadius(Math.Clamp(34 * scale, 15, 50));
-        RootBorder.Padding = new Thickness(Math.Clamp(14 * scale, 7, 22));
-        LayoutRoot.RowSpacing = Math.Clamp(8 * scale, 4, 14);
+        RootBorder.CornerRadius = new CornerRadius(Math.Clamp(shortSide * 0.13, 10, 46));
+        var padding = Math.Clamp(shortSide * 0.05, 4.5, 21);
+        RootBorder.Padding = new Thickness(padding);
+        LayoutRoot.RowSpacing = Math.Clamp(shortSide * 0.028, 2.2, 12);
+        var rowWeights = ApplyAdaptiveRowHeights(isCompact, isUltraCompact, titleNeedsTwoLines, dateNeedsTwoLines);
 
-        TitleTextBlock.FontSize = Math.Clamp(24 * scale, 11, 36);
-        CountTextBlock.FontSize = Math.Clamp(120 * scale, 36, 160);
-        DayUnitTextBlock.FontSize = Math.Clamp(56 * scale, 16, 78);
-        DateTextBlock.FontSize = Math.Clamp(34 * scale, 12, 50);
+        var innerWidth = Math.Max(1, width - padding * 2);
+        var innerHeight = Math.Max(1, height - padding * 2);
+        var totalWeight = Math.Max(0.001, rowWeights[0] + rowWeights[1] + rowWeights[2] + rowWeights[3] + rowWeights[4]);
+        var row0Height = innerHeight * (rowWeights[0] / totalWeight);
+        var row1Height = innerHeight * (rowWeights[1] / totalWeight);
+        var row3Height = innerHeight * (rowWeights[3] / totalWeight);
+        var row4Height = innerHeight * (rowWeights[4] / totalWeight);
+        var horizontalMargin = Math.Clamp(8 * scale, 4, 14);
+        var titleMaxWidth = Math.Max(24, innerWidth - horizontalMargin * 2);
+        var dateMaxWidth = titleMaxWidth;
+
+        var titlePreferred = Math.Clamp(24 * scale, 8.8, 34);
+        var titleHeightCap = Math.Max(10, row0Height * 0.94);
+        var titleLineCount = titleNeedsTwoLines ? 2 : 1;
+        TitleTextBlock.MaxLines = titleLineCount;
+        TitleTextBlock.TextWrapping = titleLineCount > 1 ? TextWrapping.Wrap : TextWrapping.NoWrap;
+        TitleTextBlock.Margin = new Thickness(horizontalMargin, 0, horizontalMargin, 0);
+        TitleTextBlock.FontSize = FitTextSize(
+            TitleTextBlock.Text,
+            TitleTextBlock.FontWeight,
+            Math.Min(titlePreferred, Math.Max(8.8, row0Height * 0.62)),
+            8.6,
+            titleMaxWidth,
+            titleHeightCap,
+            titleLineCount,
+            lineHeightFactor: 1.10);
+        TitleTextBlock.LineHeight = TitleTextBlock.FontSize * 1.10;
+
+        var digitCount = Math.Max(1, CountTextBlock.Text?.Trim().Length ?? 1);
+        var digitCompression = digitCount switch
+        {
+            >= 5 => 0.68,
+            4 => 0.8,
+            3 => 0.9,
+            _ => 1.0
+        };
+        var countCompactFactor = isUltraCompact ? 0.86 : isCompact ? 0.93 : 1.0;
+        var countPreferred = Math.Clamp(132 * scale * digitCompression * countCompactFactor, 28, 170);
+        var countHeightCap = Math.Max(30, row1Height * 0.96);
+        CountTextBlock.FontSize = FitTextSize(
+            CountTextBlock.Text,
+            CountTextBlock.FontWeight,
+            Math.Min(countPreferred, Math.Max(28, row1Height * 0.9)),
+            24,
+            titleMaxWidth,
+            countHeightCap,
+            maxLines: 1,
+            lineHeightFactor: 1.08);
+        CountTextBlock.LineHeight = CountTextBlock.FontSize * 1.08;
+
+        var unitCompactFactor = isUltraCompact ? 0.8 : isCompact ? 0.9 : 1.0;
+        DayUnitTextBlock.FontSize = Math.Clamp(52 * scale * unitCompactFactor, 10, 72);
+        DayUnitTextBlock.FontSize = Math.Min(DayUnitTextBlock.FontSize, Math.Max(10, row3Height * 0.64));
+        DayUnitTextBlock.LineHeight = DayUnitTextBlock.FontSize * 1.02;
+
+        var dateCompactFactor = isUltraCompact ? 0.84 : isCompact ? 0.92 : 1.0;
+        var datePreferred = Math.Clamp(32 * scale * dateCompactFactor, 9, 46);
+        var dateHeightCap = Math.Max(10, row4Height * 0.96);
+        var dateLineCount = dateNeedsTwoLines ? 2 : 1;
+        DateTextBlock.MaxLines = dateLineCount;
+        DateTextBlock.TextWrapping = dateLineCount > 1 ? TextWrapping.Wrap : TextWrapping.NoWrap;
+        DateTextBlock.Margin = new Thickness(horizontalMargin, 0, horizontalMargin, 0);
+        DateTextBlock.FontSize = FitTextSize(
+            DateTextBlock.Text,
+            DateTextBlock.FontWeight,
+            Math.Min(datePreferred, Math.Max(9, row4Height * 0.58)),
+            8.5,
+            dateMaxWidth,
+            dateHeightCap,
+            dateLineCount,
+            lineHeightFactor: 1.12);
+        DateTextBlock.LineHeight = DateTextBlock.FontSize * 1.12;
     }
 
-    private double ResolveScale()
+    private double[] ApplyAdaptiveRowHeights(
+        bool isCompact,
+        bool isUltraCompact,
+        bool titleNeedsTwoLines,
+        bool dateNeedsTwoLines)
     {
-        var cellScale = Math.Clamp(_currentCellSize / 44d, 0.60, 1.95);
-        var heightScale = Bounds.Height > 1 ? Math.Clamp(Bounds.Height / 300d, 0.58, 2.0) : 1;
-        var widthScale = Bounds.Width > 1 ? Math.Clamp(Bounds.Width / 300d, 0.58, 2.0) : 1;
-        return Math.Clamp(Math.Min(cellScale, Math.Min(heightScale, widthScale) * 1.05), 0.58, 1.95);
+        var weights = isUltraCompact
+            ? new[] { 1.35, 2.55, 0.48, 0.6, 0.82 }
+            : isCompact
+                ? new[] { 1.2, 2.45, 0.56, 0.7, 0.9 }
+                : new[] { 1.1, 2.3, 0.62, 0.78, 0.95 };
+
+        if (titleNeedsTwoLines)
+        {
+            weights[0] += 0.36;
+            weights[1] -= 0.21;
+            weights[2] -= 0.08;
+            weights[3] -= 0.07;
+        }
+
+        if (dateNeedsTwoLines)
+        {
+            weights[4] += 0.42;
+            weights[1] -= 0.23;
+            weights[2] -= 0.10;
+            weights[3] -= 0.09;
+        }
+
+        weights[0] = Math.Max(0.92, weights[0]);
+        weights[1] = Math.Max(1.45, weights[1]);
+        weights[2] = Math.Max(0.34, weights[2]);
+        weights[3] = Math.Max(0.44, weights[3]);
+        weights[4] = Math.Max(0.72, weights[4]);
+
+        if (LayoutRoot.RowDefinitions.Count < 5)
+        {
+            return weights;
+        }
+
+        for (var i = 0; i < 5; i++)
+        {
+            LayoutRoot.RowDefinitions[i].Height = new GridLength(weights[i], GridUnitType.Star);
+        }
+
+        return weights;
+    }
+
+    private static int GetDisplayUnits(string? text)
+    {
+        if (string.IsNullOrWhiteSpace(text))
+        {
+            return 0;
+        }
+
+        var units = 0;
+        foreach (var ch in text.Trim())
+        {
+            if (char.IsWhiteSpace(ch))
+            {
+                continue;
+            }
+
+            units += ch > 0x7F ? 2 : 1;
+        }
+
+        return units;
+    }
+
+    private static double FitTextSize(
+        string? text,
+        FontWeight fontWeight,
+        double preferredSize,
+        double minSize,
+        double maxWidth,
+        double maxHeight,
+        int maxLines,
+        double lineHeightFactor)
+    {
+        var safeText = string.IsNullOrWhiteSpace(text) ? " " : text.Trim();
+        var safeMaxWidth = Math.Max(1, maxWidth);
+        var safeMaxHeight = Math.Max(1, maxHeight);
+        var safeMaxLines = Math.Max(1, maxLines);
+
+        var probe = new TextBlock
+        {
+            Text = safeText,
+            FontWeight = fontWeight,
+            MaxLines = safeMaxLines,
+            TextWrapping = safeMaxLines > 1 ? TextWrapping.Wrap : TextWrapping.NoWrap
+        };
+
+        for (var size = preferredSize; size >= minSize; size -= 0.5)
+        {
+            probe.FontSize = size;
+            probe.LineHeight = size * lineHeightFactor;
+            probe.Measure(new Size(safeMaxWidth, double.PositiveInfinity));
+            var desired = probe.DesiredSize;
+            if (desired.Width <= safeMaxWidth + 0.6 &&
+                desired.Height <= safeMaxHeight + 0.6)
+            {
+                return size;
+            }
+        }
+
+        return minSize;
+    }
+
+    private double ResolveScale(double width, double height)
+    {
+        var cellScale = Math.Clamp(_currentCellSize / 44d, 0.56, 2.0);
+        var widthScale = Math.Clamp(width / 220d, 0.5, 2.0);
+        var heightScale = Math.Clamp(height / 220d, 0.5, 2.0);
+        return Math.Clamp(Math.Min(cellScale, Math.Min(widthScale, heightScale) * 1.02), 0.5, 2.0);
     }
 }
diff --git a/LanMontainDesktop/Views/Components/IDesktopComponentWidget.cs b/LanMontainDesktop/Views/Components/IDesktopComponentWidget.cs
index 446c305..057b572 100644
--- a/LanMontainDesktop/Views/Components/IDesktopComponentWidget.cs
+++ b/LanMontainDesktop/Views/Components/IDesktopComponentWidget.cs
@@ -17,3 +17,8 @@ public interface IWeatherInfoAwareComponentWidget
 {
     void SetWeatherInfoService(IWeatherInfoService weatherInfoService);
 }
+
+public interface IDesktopPageVisibilityAwareComponentWidget
+{
+    void SetDesktopPageContext(bool isOnActivePage, bool isEditMode);
+}
diff --git a/LanMontainDesktop/Views/Components/WeatherWidget.axaml.cs b/LanMontainDesktop/Views/Components/WeatherWidget.axaml.cs
index a8e12dd..0b0fd18 100644
--- a/LanMontainDesktop/Views/Components/WeatherWidget.axaml.cs
+++ b/LanMontainDesktop/Views/Components/WeatherWidget.axaml.cs
@@ -825,10 +825,10 @@ public partial class WeatherWidget : UserControl, IDesktopComponentWidget, ITime
         TopRowGrid.ColumnSpacing = Math.Clamp(7.5 * scaleX, 4, 13);
 
         var availableHeight = Math.Max(80, innerHeight - (ContentGrid.RowSpacing * 2));
-        var topZoneRatio = Math.Clamp(0.55 + ((1 - compactness) * 0.04), 0.52, 0.60);
-        var bottomZoneRatio = Math.Clamp(0.29 - (compactness * 0.03), 0.24, 0.32);
-        var topZoneHeight = Math.Clamp(availableHeight * topZoneRatio, 48, availableHeight - 28);
-        var bottomZoneHeight = Math.Clamp(availableHeight * bottomZoneRatio, 26, availableHeight - topZoneHeight - 6);
+        var topZoneRatio = Math.Clamp(0.52 + ((1 - compactness) * 0.03), 0.48, 0.56);
+        var bottomZoneRatio = Math.Clamp(0.36 - (compactness * 0.02), 0.32, 0.40);
+        var topZoneHeight = Math.Clamp(availableHeight * topZoneRatio, 44, availableHeight - 30);
+        var bottomZoneHeight = Math.Clamp(availableHeight * bottomZoneRatio, 34, availableHeight - topZoneHeight - 6);
         if (topZoneHeight + bottomZoneHeight > availableHeight - 6)
         {
             bottomZoneHeight = Math.Max(24, availableHeight - topZoneHeight - 6);
@@ -842,11 +842,11 @@ public partial class WeatherWidget : UserControl, IDesktopComponentWidget, ITime
             ContentGrid.RowDefinitions[2].Height = new GridLength(bottomZoneHeight, GridUnitType.Pixel);
         }
 
-        var topScaleH = Math.Clamp(topZoneHeight / 112d, 0.60, 2.2);
+        var topScaleH = Math.Clamp(topZoneHeight / 112d, 0.58, 2.2);
         var topScaleW = Math.Clamp(innerWidth / 288d, 0.60, 2.2);
-        var topScale = Math.Clamp((topScaleH * 0.72) + (topScaleW * 0.28), 0.60, 2.2);
-        var bottomScaleH = Math.Clamp(bottomZoneHeight / 94d, 0.52, 2.1);
-        var bottomScale = Math.Clamp((bottomScaleH * 0.76) + (scaleX * 0.24), 0.52, 2.1);
+        var topScale = Math.Clamp((topScaleH * 0.70) + (topScaleW * 0.30), 0.58, 2.2);
+        var bottomScaleH = Math.Clamp(bottomZoneHeight / 80d, 0.62, 2.2);
+        var bottomScale = Math.Clamp((bottomScaleH * 0.80) + (scaleX * 0.20), 0.62, 2.2);
 
         var iconSize = Math.Clamp(
             Math.Max(52, topZoneHeight * 0.50) * (0.76 + (topScale * 0.24)),
@@ -857,9 +857,9 @@ public partial class WeatherWidget : UserControl, IDesktopComponentWidget, ITime
         WeatherIconImage.Margin = new Thickness(0, Math.Clamp(-5 * topScale, -12, 0), 0, 0);
 
         TemperatureTextBlock.FontSize = Math.Clamp(
-            Math.Max(56, topZoneHeight * 0.74) * (0.72 + (topScale * 0.28)),
-            52,
-            156);
+            Math.Max(52, topZoneHeight * 0.69) * (0.74 + (topScale * 0.24)),
+            50,
+            146);
         TemperatureTextBlock.FontWeight = ToVariableWeight(310);
         TemperatureTextBlock.Margin = new Thickness(Math.Clamp(-2 * topScale, -5, 0), Math.Clamp(-8 * topScale, -14, -3), 0, 0);
         var temperatureMaxWidthLimit = Math.Max(90, innerWidth * 0.70);
@@ -868,33 +868,57 @@ public partial class WeatherWidget : UserControl, IDesktopComponentWidget, ITime
             90,
             temperatureMaxWidthLimit);
 
-        BottomInfoStack.Spacing = Math.Clamp(1.0 * bottomScale, 0, 3);
+        var bottomStackSpacing = Math.Clamp(1.2 * bottomScale, 1, 4);
+        BottomInfoStack.Spacing = bottomStackSpacing;
         BottomInfoStack.Margin = new Thickness(0, 0, 0, Math.Clamp(1.8 * scaleY, 0, 4));
-        BottomInfoStack.MaxHeight = Math.Max(24, bottomZoneHeight);
+        BottomInfoStack.MaxHeight = Math.Max(32, bottomZoneHeight);
 
-        var bottomTextMaxWidth = Math.Min(innerWidth, Math.Max(48, innerWidth * 0.78));
-        ConditionStack.Spacing = Math.Clamp(1.0 + (1.6 * bottomScale), 1, 5);
+        var bottomTextMaxWidth = Math.Min(innerWidth, Math.Max(56, innerWidth * 0.84));
+        var conditionStackSpacing = Math.Clamp(1.4 + (2.1 * bottomScale), 1.2, 7);
+        ConditionStack.Spacing = conditionStackSpacing;
         ConditionStack.Margin = new Thickness(0);
-        var infoFontSize = Math.Clamp(
-            Math.Max(12, bottomZoneHeight * 0.30) * (0.78 + (bottomScale * 0.22)),
-            12,
-            34);
-        var infoFontWeight = ToVariableWeight(560);
+        var infoFontSizeRaw = Math.Clamp(
+            Math.Max(14, bottomZoneHeight * 0.38) * (0.82 + (bottomScale * 0.24)),
+            15,
+            42);
+        var infoFontSize = infoFontSizeRaw;
+        const double infoLineHeightFactor = 1.10;
+        var estimatedBottomUsedHeight =
+            (infoFontSize * infoLineHeightFactor * 3) +
+            conditionStackSpacing +
+            bottomStackSpacing +
+            2;
+        if (estimatedBottomUsedHeight > bottomZoneHeight)
+        {
+            var shrink = Math.Clamp(bottomZoneHeight / estimatedBottomUsedHeight, 0.58, 1.0);
+            infoFontSize = Math.Max(11, infoFontSize * shrink);
+            conditionStackSpacing = Math.Max(0.8, conditionStackSpacing * shrink);
+            bottomStackSpacing = Math.Max(0.8, bottomStackSpacing * shrink);
+            ConditionStack.Spacing = conditionStackSpacing;
+            BottomInfoStack.Spacing = bottomStackSpacing;
+        }
+
+        var infoFontWeight = ToVariableWeight(590);
         ConditionTextBlock.FontSize = infoFontSize;
         ConditionTextBlock.FontWeight = infoFontWeight;
+        ConditionTextBlock.LineHeight = infoFontSize * infoLineHeightFactor;
         ConditionTextBlock.MaxWidth = bottomTextMaxWidth;
         RangeTextBlock.FontSize = infoFontSize;
         RangeTextBlock.FontWeight = infoFontWeight;
+        RangeTextBlock.LineHeight = infoFontSize * infoLineHeightFactor;
         RangeTextBlock.MaxWidth = bottomTextMaxWidth;
 
         CityInfoBadge.Padding = new Thickness(0);
         CityInfoBadge.CornerRadius = new CornerRadius(0);
+        CityInfoBadge.MaxWidth = bottomTextMaxWidth;
         LocationIcon.FontSize = Math.Clamp(
-            Math.Max(8, bottomZoneHeight * 0.13) * (0.74 + (bottomScale * 0.20)),
-            8,
-            14);
+            Math.Max(9, bottomZoneHeight * 0.16) * (0.76 + (bottomScale * 0.22)),
+            9,
+            18);
+        LocationIcon.FontSize = Math.Min(LocationIcon.FontSize, infoFontSize * 0.72);
         CityTextBlock.FontSize = infoFontSize;
         CityTextBlock.FontWeight = infoFontWeight;
+        CityTextBlock.LineHeight = infoFontSize * infoLineHeightFactor;
         CityTextBlock.MaxWidth = bottomTextMaxWidth;
     }
 
diff --git a/LanMontainDesktop/Views/MainWindow.ComponentSystem.cs b/LanMontainDesktop/Views/MainWindow.ComponentSystem.cs
index 10c248d..4c07994 100644
--- a/LanMontainDesktop/Views/MainWindow.ComponentSystem.cs
+++ b/LanMontainDesktop/Views/MainWindow.ComponentSystem.cs
@@ -934,6 +934,8 @@ public partial class MainWindow
             Grid.SetRowSpan(host, heightCells);
             pageGrid.Children.Add(host);
         }
+
+        UpdateDesktopPageAwareComponentContext();
     }
 
     private void PlaceDesktopComponentOnPage(string componentId, int pageIndex, int row, int column)
@@ -991,6 +993,7 @@ public partial class MainWindow
         pageGrid.Children.Add(host);
 
         _desktopComponentPlacements.Add(placement);
+        UpdateDesktopPageAwareComponentContext();
         PersistSettings();
 
         ApplyTaskbarActionVisibility(GetCurrentTaskbarContext());
@@ -1291,6 +1294,45 @@ public partial class MainWindow
         }
     }
 
+    private void UpdateDesktopPageAwareComponentContext()
+    {
+        var activeDesktopPageIndex = _isSettingsOpen ? -1 : _currentDesktopSurfaceIndex;
+        var isEditMode = _isComponentLibraryOpen || _isSettingsOpen;
+
+        foreach (var pair in _desktopPageComponentGrids)
+        {
+            var isOnActivePage = pair.Key == activeDesktopPageIndex;
+            foreach (var host in pair.Value.Children.OfType<Border>())
+            {
+                if (!host.Classes.Contains(DesktopComponentHostClass))
+                {
+                    continue;
+                }
+
+                if (TryGetContentHost(host)?.Child is Control componentRoot)
+                {
+                    ApplyDesktopPageContext(componentRoot, isOnActivePage, isEditMode);
+                }
+            }
+        }
+    }
+
+    private static void ApplyDesktopPageContext(Control root, bool isOnActivePage, bool isEditMode)
+    {
+        if (root is IDesktopPageVisibilityAwareComponentWidget awareRoot)
+        {
+            awareRoot.SetDesktopPageContext(isOnActivePage, isEditMode);
+        }
+
+        foreach (var descendant in root.GetVisualDescendants())
+        {
+            if (descendant is IDesktopPageVisibilityAwareComponentWidget awareChild)
+            {
+                awareChild.SetDesktopPageContext(isOnActivePage, isEditMode);
+            }
+        }
+    }
+
     private static Border? TryGetResizeHandle(Border host)
     {
         if (host.Child is Grid hostChrome)
@@ -1368,6 +1410,8 @@ public partial class MainWindow
                 }
             }
         }
+
+        UpdateDesktopPageAwareComponentContext();
     }
 
     private void ApplyDesktopEditStateToHost(Border host, bool isEditMode)
diff --git a/LanMontainDesktop/Views/MainWindow.DesktopPaging.cs b/LanMontainDesktop/Views/MainWindow.DesktopPaging.cs
index 76de8d7..1a616ad 100644
--- a/LanMontainDesktop/Views/MainWindow.DesktopPaging.cs
+++ b/LanMontainDesktop/Views/MainWindow.DesktopPaging.cs
@@ -281,6 +281,8 @@ public partial class MainWindow
         {
             CloseLauncherFolderOverlay();
         }
+
+        UpdateDesktopPageAwareComponentContext();
     }
 
     private void MoveSurfaceBy(int delta)
diff --git a/LanMontainDesktop/Views/MainWindow.Settings.cs b/LanMontainDesktop/Views/MainWindow.Settings.cs
index 7a70a35..778a7c8 100644
--- a/LanMontainDesktop/Views/MainWindow.Settings.cs
+++ b/LanMontainDesktop/Views/MainWindow.Settings.cs
@@ -1769,6 +1769,7 @@ public partial class MainWindow
         }
 
         _isSettingsOpen = true;
+        UpdateDesktopPageAwareComponentContext();
         UpdateAdaptiveTextSystem();
         ApplyWallpaperBrush();
         ApplyTaskbarActionVisibility(GetCurrentTaskbarContext());
@@ -1805,6 +1806,7 @@ public partial class MainWindow
         }
 
         _isSettingsOpen = false;
+        UpdateDesktopPageAwareComponentContext();
         UpdateAdaptiveTextSystem();
         ApplyWallpaperBrush();
         ApplyTaskbarActionVisibility(GetCurrentTaskbarContext());
diff --git a/noise.md b/noise.md
new file mode 100644
index 0000000..4659bb2
--- /dev/null
+++ b/noise.md
@@ -0,0 +1,771 @@
+# 沉浸式时钟噪音计算与评分技术文档
+
+Immersive Clock 的噪音监测系统不仅仅是一个简单的分贝计，它内置了一个基于心理声学与专注力理论的评分引擎。该引擎旨在客观、多维度地量化环境噪音对学习心流的干扰程度。
+
+本文档详细解析了该系统的计算原理、核心指标定义、评分算法及完整的技术架构。
+
+## 目录
+
+1. [核心理念](#1-核心理念)
+2. [系统架构](#2-系统架构)
+3. [数据采集层](#3-数据采集层)
+4. [数据聚合层](#4-数据聚合层)
+5. [评分算法核心](#5-评分算法核心)
+6. [数据存储层](#6-数据存储层)
+7. [历史报告生成](#7-历史报告生成)
+8. [流服务整合](#8-流服务整合)
+9. [配置参数体系](#9-配置参数体系)
+10. [类型定义](#10-类型定义)
+
+---
+
+## 1. 核心理念
+
+### 1.1 设计原则
+
+系统认为，并非所有"响声"都是一样的。对于专注力而言：
+
+- **持续的嗡嗡声**（如嘈杂的人群）比**偶尔的掉笔声**更具破坏性
+- **频繁的打断**（如每分钟都有人说话）比**单次的大声喧哗**更让人烦躁
+- **评分与校准分离**：评分使用原始 DBFS 数据，校准仅影响显示分贝
+
+因此，评分系统采用了 **多维度加权扣分制**，满分 100 分，根据环境表现进行扣分。
+
+### 1.2 评分与校准分离
+
+项目通过"原始数据（用于评分）"与"显示数据（用于展示）"的**严格分层**，杜绝了校准值导致的评分偏差：
+
+1. **评分只依赖原始 DBFS（设备输出的相对电平）**
+   - 评分的三项核心指标（`p50Dbfs`、`overRatioDbfs`、`segmentCount`）都来自原始 `dbfs` 统计
+   - "超阈时长占比"判定条件固定为：`dbfs > scoreThresholdDbfs`（阈值默认 `-50 dBFS`），与校准无关
+   - 这意味着即使用户把"显示分贝基准"调高/调低，评分侧的 `dbfs` 不会变化，因此得分与超阈时长也不会被"调参刷分"
+
+2. **校准仅影响 Display dB（UI 展示口径），不进入评分链路**
+   - 校准（`baselineRms` / `baselineDb`）只用于将 `rms` 映射为 `displayDb`，用于实时显示与报告中的"噪音等级分布"等图表展示
+   - 这些展示口径变化不会反向影响评分输入，也不会改变切片摘要中的 `raw.*` 字段
+
+3. **统计报告中"超阈时长"取自 raw.overRatioDbfs**
+   - 报告里展示的"超阈时长"是对每个切片 `raw.overRatioDbfs` 按有效采样时长加权汇总得到，仍然完全基于 DBFS
+   - 相比之下，"噪音等级分布"使用的是 `display.avgDb`（校准后的显示分贝），因此它会随校准变化——这是为了更贴近用户直觉的 dB 区间划分
+
+---
+
+## 2. 系统架构
+
+### 2.1 整体架构图
+
+```
+┌─────────────────────────────────────────────────────────────────┐
+│                        用户界面层                                  │
+│  ┌──────────────┐  ┌──────────────┐  ┌──────────────┐          │
+│  │ 实时监控组件  │  │ 噪音报告弹窗  │  │ 噪音历史列表  │          │
+│  └──────────────┘  └──────────────┘  └──────────────┘          │
+└─────────────────────────────────────────────────────────────────┘
+                              ↑
+                              │ 订阅/发布
+                              ↓
+┌─────────────────────────────────────────────────────────────────┐
+│                        流服务层                                   │
+│  ┌──────────────────────────────────────────────────────────┐   │
+│  │  噪音流服务 - 订阅管理、生命周期控制、设置热更新          │   │
+│  └──────────────────────────────────────────────────────────┘   │
+└─────────────────────────────────────────────────────────────────┘
+                              ↑
+                              │ 帧数据流
+                              ↓
+┌─────────────────────────────────────────────────────────────────┐
+│                        数据聚合层                                 │
+│  ┌──────────────────┐  ┌────────────────────────────────────┐  │
+│  │ 噪音帧处理器      │  │ 噪音切片聚合器                      │  │
+│  │ - RMS/dBFS 计算   │  │ - 切片聚合、统计指标、评分计算      │  │
+│  │ - 50ms/帧         │  │ - 30秒/切片                         │  │
+│  └──────────────────┘  └────────────────────────────────────┘  │
+│  ┌──────────────────────────────────────────────────────────┐   │
+│  │ 实时环形缓冲区 - 保留固定时长的实时数据                    │   │
+│  └──────────────────────────────────────────────────────────┘   │
+└─────────────────────────────────────────────────────────────────┘
+                              ↑
+                              │ 音频流
+                              ↓
+┌─────────────────────────────────────────────────────────────────┐
+│                        数据采集层                                 │
+│  ┌──────────────────────────────────────────────────────────┐   │
+│  │ 麦克风采集 - Web Audio API、滤波器、AnalyserNode         │   │
+│  └──────────────────────────────────────────────────────────┘   │
+└─────────────────────────────────────────────────────────────────┘
+                              ↑
+                              │ 物理音频
+                              ↓
+┌─────────────────────────────────────────────────────────────────┐
+│                        数据存储层                                 │
+│  ┌──────────────────────────────────────────────────────────┐   │
+│  │ 切片存储 - localStorage、时间清理、容量限制                │   │
+│  └──────────────────────────────────────────────────────────┘   │
+└─────────────────────────────────────────────────────────────────┘
+                              ↑
+                              │ 历史数据
+                              ↓
+┌─────────────────────────────────────────────────────────────────┐
+│                        历史报告层                                 │
+│  ┌──────────────────────────────────────────────────────────┐   │
+│  │ 历史构建 - 课表关联、加权平均评分、覆盖率计算                │   │
+│  └──────────────────────────────────────────────────────────┘   │
+└─────────────────────────────────────────────────────────────────┘
+```
+
+### 2.2 模块说明
+
+| 模块 | 功能 |
+|------|------|
+| 类型定义 | 核心类型定义 |
+| 常量定义 | 分析参数常量、报告参数常量 |
+| 麦克风采集 | 音频采集 |
+| 帧处理器 | 帧处理 |
+| 切片聚合器 | 切片聚合 |
+| 环形缓冲区 | 实时数据 |
+| 流服务 | 流管理 |
+| 评分引擎 | 评分算法 |
+| 切片服务 | 存储服务 |
+| 历史构建 | 历史报告 |
+| 设置管理 | 设置管理 |
+
+---
+
+## 3. 数据采集层
+
+### 3.1 麦克风采集
+
+#### 3.1.1 Web Audio API 使用
+
+系统使用 Web Audio API 获取麦克风输入，构建完整的音频处理链路：
+
+```
+麦克风 → MediaStream → MediaStreamAudioSourceNode 
+       → 高通滤波器 (80Hz) → 低通滤波器 (8000Hz) 
+       → AnalyserNode (FFT Size 2048)
+```
+
+#### 3.1.2 音频滤波器配置
+
+| 滤波器类型 | 截止频率 | 作用 |
+|-----------|---------|------|
+| 高通滤波器 | 80 Hz | 过滤低频噪音（如空调嗡嗡声） |
+| 低通滤波器 | 8000 Hz | 过滤高频噪音（如电子设备啸叫） |
+
+#### 3.1.3 AnalyserNode 配置
+
+```typescript
+analyser.fftSize = 2048;           // FFT 窗口大小
+analyser.smoothingTimeConstant = 0; // 无平滑，实时响应
+```
+
+#### 3.1.4 权限处理与错误处理
+
+```typescript
+// 麦克风权限请求配置
+{
+  audio: {
+    echoCancellation: false,    // 禁用回声消除
+    noiseSuppression: false,    // 禁用降噪
+    autoGainControl: false,     // 禁用自动增益
+  },
+  video: false
+}
+```
+
+**浏览器兼容性说明：**
+- 部分浏览器/设备可能忽略上述约束设置
+- 建议在 UI 中提示用户实际生效的约束
+- 需要测试矩阵验证：Chrome/Firefox/Safari/Edge/iOS Safari/Android WebView
+
+**错误处理：**
+- `NotAllowedError` / `SecurityError` → 权限拒绝
+- `AudioContext not supported` → 浏览器不支持
+
+---
+
+### 3.2 帧处理器
+
+#### 3.2.1 采样频率
+
+- **帧间隔**：50ms（约 20 fps）
+- **数据来源**：AnalyserNode.getFloatTimeDomainData()
+
+#### 3.2.2 RMS（均方根）计算
+
+RMS 是衡量音频信号强度的标准方法：
+
+**公式：**
+$$ \text{RMS} = \sqrt{\frac{1}{N} \sum_{i=1}^{N} x_i^2} $$
+
+#### 3.2.3 dBFS（分贝满刻度）转换
+
+dBFS 是数字音频的标准分贝单位，范围 -100 到 0 dB：
+
+**公式：**
+$$ \text{dBFS} = 20 \times \log_{10}(\text{RMS}) $$
+
+**范围限制：**
+- 最小值：-100 dBFS（静音）
+- 最大值：0 dBFS（满刻度）
+
+#### 3.2.4 峰值检测
+
+峰值用于检测突发噪音，在 RMS 计算过程中同时记录峰值。
+
+---
+
+## 4. 数据聚合层
+
+### 4.1 切片聚合器
+
+#### 4.1.1 切片时长
+
+- **默认切片时长**：30 秒
+- **可配置范围**：≥ 1 秒
+
+#### 4.1.2 统计指标计算
+
+切片聚合器为每个切片计算以下统计指标：
+
+| 指标 | 说明 | 计算方法 |
+|------|------|---------|
+| avgDbfs | 平均分贝 | 能量平均（线性域 RMS 平均后转回 dBFS） |
+| maxDbfs | 最大分贝 | 所有帧 dBFS 的最大值 |
+| p50Dbfs | 中位数分贝 | 线性域分位数（RMS 域计算后转回 dBFS） |
+| p95Dbfs | 95分位数分贝 | 线性域分位数（RMS 域计算后转回 dBFS） |
+| overRatioDbfs | 超阈值比例 | 超阈值时长 / 采样时长 |
+| segmentCount | 事件段数量 | 独立噪音事件次数 |
+| sampledDurationMs | 采样时长 | 有效采样时间（排除缺口） |
+| gapCount | 缺口数量 | 数据缺口次数 |
+| maxGapMs | 最大缺口时长 | 最长数据缺口时长 |
+
+#### 4.1.3 能量平均计算（avgDbfs）
+
+**公式：**
+$$ \text{avgDbfs} = 20 \times \log_{10}\left(\sqrt{\frac{1}{N} \sum_{i=1}^{N} 10^{\text{dBFS}_i / 10}}\right) $$
+
+**物理意义：** 在线性域（RMS）上做平均，符合能量守恒定律
+
+#### 4.1.4 线性域分位数计算
+
+**公式：**
+$$ \text{quantileDbfs} = 20 \times \log_{10}(Q_{\text{RMS}}(p)) $$
+
+其中 $Q_{\text{RMS}}(p)$ 是 RMS 域的分位数，使用线性插值计算：
+$$ Q_{\text{RMS}}(p) = x_{\lfloor i \rfloor} \times (1 - w) + x_{\lceil i \rceil} \times w $$
+
+- $i = (n-1) \times p$
+- $w = i - \lfloor i \rfloor$
+
+**物理意义：** 在线性域（RMS）上计算分位数，符合能量统计的严谨性
+
+#### 4.1.5 超阈值比例计算（时间加权）
+
+**公式：**
+$$ \text{overRatioDbfs} = \frac{\text{超阈值时长}}{\text{采样时长}} $$
+
+**物理意义：** 使用实际时长而非帧数计算比例，更精确
+
+#### 4.1.6 事件段检测与合并算法
+
+事件段检测用于识别独立的噪音事件：
+
+**合并规则：**
+- **合并窗口**：500ms（默认）
+- 如果两次超阈值事件间隔 ≤ 500ms，合并为同一事件段
+- 否则计为新的独立事件段
+
+**示例：**
+```
+时间轴：  0ms    200ms   400ms   600ms   800ms   1000ms
+状态：    [噪音] [噪音] [安静] [噪音] [噪音] [安静]
+合并后：  └─────── 事件段1 ───────┘  └── 事件段2 ──┘
+```
+
+#### 4.1.7 显示分贝映射（校准机制）
+
+显示分贝用于用户界面展示，支持校准：
+
+**公式（有校准）：**
+$$ \text{displayDb} = \text{baselineDb} + 20 \times \log_{10}\left(\frac{\text{rms}}{\text{baselineRms}}\right) $$
+
+**公式（无校准）：**
+$$ \text{displayDb} = 20 \times \log_{10}\left(\frac{\text{rms}}{10^{-3}}\right) + 60 $$
+
+**范围限制：** 20 dB ~ 100 dB
+
+**校准流程说明：**
+1. 使用标准声源（如 60 dB 的白噪音）
+2. 测量对应的 RMS 值
+3. 设置为 baselineRms
+4. 设置对应的显示分贝为 baselineDb
+
+#### 4.1.8 缺口检测与采样时长统计
+
+**缺口阈值：** `max(1000ms, frameMs × 5)` = **1000ms**（默认）
+
+当检测到数据缺口时，会触发切片完成并记录缺口信息。
+
+#### 4.1.9 无效帧过滤
+
+低于 -90 dBFS 的帧被视为静音/无效信号，不参与统计。
+
+**常量说明：**
+- `INVALID_DBFS_THRESHOLD = -90`：统计意义上的"静音"阈值
+- `DBFS_MIN_POSSIBLE = -100`：物理最小可表示值（用于 clamp）
+- `DBFS_MAX_POSSIBLE = 0`：物理最大可表示值（用于 clamp）
+
+---
+
+### 4.2 实时环形缓冲区
+
+#### 4.2.1 数据结构设计
+
+环形缓冲区使用固定容量数组实现，通过起始索引和当前长度管理数据。
+
+#### 4.2.2 时间窗口裁剪策略
+
+**裁剪规则：** 移除时间戳早于 `当前时间 - retentionMs` 的数据点
+
+---
+
+## 5. 评分算法核心
+
+### 5.1 三大核心指标
+
+评分引擎从以下三个维度对噪音数据进行分析：
+
+#### A. 持续噪音水平 (Sustained Level)
+
+- **定义**：剔除突发噪音后的环境"底噪"水平
+- **算法**：使用时段内所有帧的中位数电平 (`p50Dbfs`)
+- **意义**：反映环境本身是否安静。如果环境中有持续的风扇声或交谈声，该指标会升高
+
+#### B. 超阈值时长占比 (Over Threshold Ratio)
+
+- **定义**：原始 `DBFS` 超过评分阈值（`scoreThresholdDbfs`）的时间比例
+- **算法**：`超阈值时长 / 采样时长`（超标判定：`dbfs > scoreThresholdDbfs`）
+- **意义**：反映环境的"纯净度"。即使是 0.1 秒的尖叫也会被精确计入，无法被平均值掩盖
+
+> **提示**：评分阈值（`scoreThresholdDbfs`，单位 dBFS）与"界面报警/提示音"使用的显示分贝阈值（`maxLevelDb`，单位 dB）不是同一个概念；前者只用于评分，后者用于判定 noisy/quiet 与提示音触发。
+
+#### C. 打断次数密度 (Interruption Density)
+
+- **定义**：单位时间内（每分钟）发生的独立噪音事件次数
+- **智能合并算法**：
+  - 系统设有 **500ms** (默认) 的合并窗口
+  - 如果两次响声间隔小于该窗口（如拉椅子的一连串声音），会被合并为 **1 次打断**
+  - 只有间隔较长的响声才会被计为新的打断
+- **意义**：反映环境的干扰频率。频繁的打断（如断断续续的说话声）比连续的噪音更易打断心流
+
+### 5.2 评分引擎
+
+#### 5.2.1 三维度评分模型
+
+评分系统从三个维度对噪音进行评估：
+
+| 维度 | 权重 | 指标 | 满扣分条件 |
+|------|------|------|-----------|
+| **持续噪音** | 40% | p50Dbfs | 中位数超过阈值 6 dBFS |
+| **超阈时长** | 30% | overRatioDbfs | 超阈时间占比 30% |
+| **打断频次** | 30% | segmentCount | 6 次/分钟 |
+
+#### 5.2.2 评分公式
+
+**总惩罚系数：**
+$$ \text{TotalPenalty} = 0.40 \times P_{\text{sustained}} + 0.30 \times P_{\text{time}} + 0.30 \times P_{\text{segment}} $$
+
+**最终得分：**
+$$ \text{Score} = 100 \times (1 - \text{TotalPenalty}) $$
+
+#### 5.2.3 惩罚系数计算
+
+##### A. 持续噪音惩罚
+
+**公式：**
+$$ P_{\text{sustained}} = \text{clamp}_{[0,1]}\left(\frac{\text{p50Dbfs} - \text{threshold}}{6}\right) $$
+
+**满扣分条件：** `p50Dbfs - threshold ≥ 6 dBFS`
+
+##### B. 超阈时长惩罚
+
+**公式：**
+$$ P_{\text{time}} = \text{clamp}_{[0,1]}\left(\frac{\text{overRatioDbfs}}{0.3}\right) $$
+
+**满扣分条件：** `overRatioDbfs ≥ 30%`
+
+##### C. 打断频次惩罚
+
+**公式：**
+$$ P_{\text{segment}} = \text{clamp}_{[0,1]}\left(\frac{\text{segmentCount} / \text{minutes}}{\text{maxSegmentsPerMin}}\right) $$
+
+**满扣分条件：** `segmentsPerMin ≥ 6 次/分钟`
+
+#### 5.2.4 权重解读
+
+- **持续噪音 (40%)**：持续底噪仍会明显拉低分数
+- **超阈时长 (30%)**：只要大部分时间安静，偶尔的噪音仍可被容忍
+- **打断频次 (30%)**：强调"被频繁打断"对心流的破坏，提升对碎片化干扰的惩罚力度
+
+#### 5.2.5 边界条件处理
+
+- DBFS 范围限制：-100 到 0 dB
+- 惩罚系数范围限制：0 到 1
+- 评分范围限制：0 到 100 分
+
+#### 5.2.6 有效时长处理
+
+优先使用采样有效时长，不存在时回退到物理时长。
+
+#### 5.2.7 评分示例
+
+**场景 1：安静环境**
+- p50Dbfs = -60 dBFS, threshold = -50 dBFS
+- overRatioDbfs = 0.05 (5%)
+- segmentCount = 1, duration = 30s
+
+```
+sustainedPenalty = clamp01((-60 - (-50)) / 6) = clamp01(-10/6) = 0
+timePenalty = clamp01(0.05 / 0.3) = 0.167
+segmentPenalty = clamp01((1/0.5) / 6) = clamp01(2/6) = 0.333
+
+TotalPenalty = 0.4×0 + 0.3×0.167 + 0.3×0.333 = 0.15
+Score = 100 × (1 - 0.15) = 85 分
+```
+
+**场景 2：嘈杂环境**
+- p50Dbfs = -45 dBFS, threshold = -50 dBFS
+- overRatioDbfs = 0.40 (40%)
+- segmentCount = 8, duration = 30s
+
+```
+sustainedPenalty = clamp01((-45 - (-50)) / 6) = clamp01(5/6) = 0.833
+timePenalty = clamp01(0.40 / 0.3) = 1.0
+segmentPenalty = clamp01((8/0.5) / 6) = clamp01(16/6) = 1.0
+
+TotalPenalty = 0.4×0.833 + 0.3×1.0 + 0.3×1.0 = 0.933
+Score = 100 × (1 - 0.933) = 6.7 分
+```
+
+---
+
+## 6. 数据存储层
+
+### 6.1 切片服务
+
+#### 6.1.1 localStorage 存储策略
+
+存储键：`noise-slices`
+
+**隐私说明：**
+- 存储内容：时间戳、噪音统计（不包含音频数据）
+- 风险：可能泄露位置/日程信息
+- 建议：在 UI 中提供"清除历史"功能
+
+#### 6.1.2 时间窗口清理
+
+**默认保留时长：** 14 天
+**可配置范围：** 1 ~ 365 天
+
+使用新切片的结束时间作为基准计算 cutoff，确保新切片不会被清理。
+
+#### 6.1.3 容量限制
+
+**容量上限：** 本地存储配额的 90%
+
+#### 6.1.4 数据规范化与校验
+
+**精度控制：**
+- dBFS：3 位小数
+- overRatioDbfs：4 位小数
+- 显示分贝：2 位小数
+- 评分：1 位小数
+
+---
+
+## 7. 历史报告生成
+
+### 7.1 历史构建器
+
+#### 7.1.1 与课表关联逻辑
+
+**关联规则：**
+1. 按日期分组切片
+2. 对每个日期的每个课时，查找重叠的切片
+3. 计算该课时的平均评分
+
+#### 7.1.2 时段平均评分计算（加权平均）
+
+**公式：**
+$$ \text{avgScore} = \frac{\sum_{i} \text{score}_i \times \text{effectiveMs}_i}{\sum_{i} \text{effectiveMs}_i} $$
+
+其中：
+$$ \text{effectiveMs}_i = \text{sampledDurationMs}_i \times \frac{\text{overlapMs}_i}{\text{sliceMs}_i} $$
+
+#### 7.1.3 覆盖率计算
+
+**公式：**
+$$ \text{coverageRatio} = \frac{\text{totalMs}}{\text{periodMs}} $$
+
+**含义：** 课时内有效采样时长占课时总时长的比例
+
+#### 7.1.4 日期时间处理
+
+**时区说明：**
+- 使用本地时区
+- 内部存储使用 UTC 时间戳
+- 对外展示使用本地时间
+
+**日期格式：** `YYYY-MM-DD`
+**时间格式：** `HH:MM`
+
+#### 7.1.5 跨天课时处理
+
+如果结束时间 ≤ 开始时间，则课时跨越到次日。
+
+#### 7.1.6 报告中的图表
+
+在噪音统计报告中，您可以直观地看到这些数据：
+
+- **评分走势图**：展示了 `Score` 随时间的变化，帮助您回顾专注状态
+- **噪音等级分布**：将每一帧归类为安静/正常/吵闹/极吵，直观展示时间占比
+- **扣分归因**：直接显示上述三个维度的扣分比例，告诉您为什么分低（是因为一直吵，还是因为总被打断）
+- **打断次数密度**：展示每分钟被干扰的次数
+
+---
+
+## 8. 流服务整合
+
+### 8.1 噪音流服务
+
+#### 8.1.1 订阅/发布模式
+
+**模式：** 观察者模式
+- 多个组件可同时订阅
+- 最后一个订阅者取消时自动停止采集
+
+#### 8.1.2 生命周期管理
+
+流服务支持启动、停止和重启操作，自动管理采集资源的生命周期。
+
+#### 8.1.3 预热帧处理
+
+**目的：** 丢弃麦克风启动后的不稳定数据（约 500ms）
+
+#### 8.1.4 设置热更新响应
+
+**需要重启的参数：**
+- frameMs
+- sliceSec
+- scoreThresholdDbfs
+- segmentMergeGapMs
+- maxSegmentsPerMin
+
+**无需重启的参数：**
+- maxLevelDb
+- showRealtimeDb
+- alertSoundEnabled
+- avgWindowSec
+- baselineDb
+
+#### 8.1.5 时间加权平均
+
+**公式：**
+$$ \text{avg} = \frac{\sum_{i} v_i \times (t_{i+1} - t_i)}{\sum_{i} (t_{i+1} - t_i)} $$
+
+---
+
+## 9. 配置参数体系
+
+### 9.1 常量定义
+
+#### 9.1.1 分析参数
+
+```typescript
+NOISE_ANALYSIS_SLICE_SEC = 30;           // 切片时长 30 秒
+NOISE_ANALYSIS_FRAME_MS = 50;            // 帧间隔 50ms
+NOISE_SCORE_THRESHOLD_DBFS = -50;        // 评分阈值 -50dBFS
+NOISE_SCORE_SEGMENT_MERGE_GAP_MS = 500;  // 事件段合并间隔 500ms
+NOISE_SCORE_MAX_SEGMENTS_PER_MIN = 6;    // 每分钟最大事件段数 6
+NOISE_REALTIME_CHART_SLICE_COUNT = 1;     // 实时图表切片数 1
+```
+
+#### 9.1.2 报告参数
+
+```typescript
+DEFAULT_NOISE_REPORT_RETENTION_DAYS = 14;        // 默认保留 14 天
+MIN_NOISE_REPORT_RETENTION_DAYS = 1;             // 最小保留 1 天
+MAX_NOISE_REPORT_RETENTION_DAYS_FALLBACK = 365;  // 最大保留 365 天
+```
+
+### 9.2 设置管理
+
+#### 9.2.1 固定参数
+
+为保证评分口径稳定，避免用户通过调整参数"刷分"，以下参数固定为程序内常量：
+- sliceSec
+- frameMs
+- scoreThresholdDbfs
+- segmentMergeGapMs
+- maxSegmentsPerMin
+
+#### 9.2.2 可配置参数
+
+| 参数 | 类型 | 默认值 | 说明 |
+|------|------|--------|------|
+| maxLevelDb | number | 55 | 最大允许噪音级别（显示分贝） |
+| baselineDb | number | 40 | 手动基准显示分贝 |
+| showRealtimeDb | boolean | true | 是否显示实时分贝 |
+| avgWindowSec | number | 1 | 噪音平均时间窗（秒） |
+| alertSoundEnabled | boolean | false | 超阈值提示音开关 |
+
+---
+
+## 10. 类型定义
+
+### 10.1 核心类型
+
+#### 10.1.1 噪音帧采样
+
+```typescript
+interface NoiseFrameSample {
+  t: number;        // 时间戳
+  rms: number;      // 均方根值
+  dbfs: number;     // 分贝值 (dBFS)
+  peak?: number;    // 峰值
+}
+```
+
+#### 10.1.2 噪音切片原始统计
+
+```typescript
+interface NoiseSliceRawStats {
+  avgDbfs: number;              // 平均分贝
+  maxDbfs: number;              // 最大分贝
+  p50Dbfs: number;             // 中位数分贝
+  p95Dbfs: number;             // 95分位数分贝
+  overRatioDbfs: number;        // 超阈值比例
+  segmentCount: number;         // 事件段数量
+  sampledDurationMs?: number;   // 采样时长
+  gapCount?: number;            // 缺口数量
+  maxGapMs?: number;            // 最大缺口时长
+}
+```
+
+#### 10.1.3 噪音切片显示统计
+
+```typescript
+interface NoiseSliceDisplayStats {
+  avgDb: number;    // 平均显示分贝
+  p95Db: number;    // 95分位数显示分贝
+}
+```
+
+#### 10.1.4 噪音评分明细
+
+```typescript
+interface NoiseScoreBreakdown {
+  sustainedPenalty: number;      // 持续噪音惩罚
+  timePenalty: number;           // 时间惩罚
+  segmentPenalty: number;        // 事件段惩罚
+  thresholdsUsed: {
+    scoreThresholdDbfs: number;      // 使用的评分阈值
+    segmentMergeGapMs: number;       // 使用的合并间隔
+    maxSegmentsPerMin: number;       // 使用的最大事件段数
+  };
+  sustainedLevelDbfs: number;    // 持续电平
+  overRatioDbfs: number;         // 超阈值比例
+  segmentCount: number;          // 事件段数量
+  minutes: number;               // 时长（分钟）
+  durationMs?: number;           // 物理时长
+  sampledDurationMs?: number;    // 采样时长
+  coverageRatio?: number;        // 覆盖率
+}
+```
+
+#### 10.1.5 噪音切片摘要
+
+```typescript
+interface NoiseSliceSummary {
+  start: number;                      // 开始时间戳
+  end: number;                        // 结束时间戳
+  frames: number;                     // 帧数
+  raw: NoiseSliceRawStats;            // 原始统计
+  display: NoiseSliceDisplayStats;    // 显示统计
+  score: number;                      // 评分
+  scoreDetail: NoiseScoreBreakdown;   // 评分明细
+}
+```
+
+#### 10.1.6 实时数据点
+
+```typescript
+interface NoiseRealtimePoint {
+  t: number;        // 时间戳
+  dbfs: number;     // 分贝值 (dBFS)
+  displayDb: number; // 显示分贝
+}
+```
+
+#### 10.1.7 噪音流快照
+
+```typescript
+interface NoiseStreamSnapshot {
+  status: NoiseStreamStatus;          // 流状态
+  realtimeDisplayDb: number;          // 实时显示分贝
+  realtimeDbfs: number;               // 实时分贝 (dBFS)
+  maxLevelDb: number;                 // 最大允许级别
+  showRealtimeDb: boolean;            // 是否显示实时分贝
+  alertSoundEnabled: boolean;         // 提示音开关
+  ringBuffer: NoiseRealtimePoint[];   // 环形缓冲区快照
+  latestSlice: NoiseSliceSummary | null; // 最新切片
+}
+```
+
+#### 10.1.8 噪音流状态
+
+```typescript
+type NoiseStreamStatus =
+  | "initializing"      // 初始化中
+  | "quiet"             // 安静
+  | "noisy"             // 嘈杂
+  | "permission-denied" // 权限拒绝
+  | "error";            // 错误
+```
+
+---
+
+## 附录
+
+### A. 术语表
+
+| 术语 | 英文 | 说明 |
+|------|------|------|
+| 均方根 | RMS (Root Mean Square) | 衡量音频信号强度的标准方法 |
+| 分贝满刻度 | dBFS (Decibels relative to Full Scale) | 数字音频的标准分贝单位，范围 -100 到 0 dB |
+| 显示分贝 | Display dB | 用于用户界面展示的分贝值，范围 20 到 100 dB |
+| 切片 | Slice | 固定时间窗口（默认 30 秒）内的噪音数据聚合 |
+| 帧 | Frame | 单次音频采样（默认 50ms） |
+| 事件段 | Segment | 独立的噪音事件，通过合并窗口（500ms）合并 |
+
+### B. 参数固定策略
+
+为保证统计口径稳定，当前版本将"分析与评分"的高级参数固定为程序内常量：
+
+| 参数 | 值 | 说明 |
+|------|-----|------|
+| frameMs | 50ms | 约 20fps |
+| sliceSec | 30s | 切片时长 |
+| scoreThresholdDbfs | -50 dBFS | 评分阈值 |
+| segmentMergeGapMs | 500ms | 事件段合并间隔 |
+| maxSegmentsPerMin | 6 | 每分钟最大事件段数 |
+
+### C. 技术栈
+
+- **音频处理**：Web Audio API
+- **数据存储**：localStorage
+- **前端框架**：React 18
+- **构建工具**：Vite 5
+- **类型系统**：TypeScript 5.4
+
diff --git a/scripts/build.sh b/scripts/build.sh
index 7e7bceb..0feb940 100644
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -1,220 +1,159 @@
 #!/bin/bash
-# LanMontainDesktop Build Script for Linux/macOS
-# Usage: ./build.sh [options]
-# Example: ./build.sh --project LanMontainDesktop.csproj --rid linux-x64 --version 1.0.0
+# Build script for LanMontainDesktop
+# Cross-platform build support: Linux, macOS
 
 set -e
 
-# Default values
-PROJECT="LanMontainDesktop/LanMontainDesktop.csproj"
-CONFIGURATION="Release"
+Script_Dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+Root_Dir="$(dirname "$Script_Dir")"
+
+# Detect OS
+OS=""
+ARCH=""
 RID=""
-VERSION=""
-PUBLISH_DIR=""
-SKIP_RESTORE=false
-VERBOSE=false
 
-# Colors for output
-RED='\033[0;31m'
-GREEN='\033[0;32m'
-YELLOW='\033[1;33m'
-BLUE='\033[0;34m'
-NC='\033[0m' # No Color
-
-# Functions
-print_error() {
-    echo -e "${RED}❌ Error: $1${NC}" >&2
+detect_os() {
+    if [[ "$OSTYPE" == "linux-gnu"* ]]; then
+        OS="linux"
+        RID="linux-x64"
+    elif [[ "$OSTYPE" == "darwin"* ]]; then
+        OS="macos"
+        ARCH=$(uname -m)
+        if [[ "$ARCH" == "arm64" ]]; then
+            RID="osx-arm64"
+        else
+            RID="osx-x64"
+        fi
+    else
+        echo "Unsupported OS: $OSTYPE"
+        exit 1
+    fi
 }
 
-print_success() {
-    echo -e "${GREEN}✅ $1${NC}"
-}
-
-print_info() {
-    echo -e "${BLUE}ℹ️  $1${NC}"
-}
-
-print_warning() {
-    echo -e "${YELLOW}⚠️  $1${NC}"
-}
-
-show_help() {
+print_usage() {
     cat << EOF
-LanMontainDesktop Build Script for Linux/macOS
+LanMontainDesktop Build Script
 
-Usage: $0 [options]
+Usage: $0 [command] [options]
 
+Commands:
+  build       Build the project
+  publish     Publish as self-contained
+  clean       Clean build output
+  
 Options:
-    -p, --project PATH          Project file path (default: LanMontainDesktop/LanMontainDesktop.csproj)
-    -c, --config CONFIG         Configuration: Release/Debug (default: Release)
-    -r, --rid RID              Runtime Identifier: linux-x64, osx-x64, osx-arm64 (required)
-    -v, --version VERSION      Version number (default: read from csproj)
-    -o, --output DIR           Output directory for publish
-    --skip-restore             Skip dotnet restore
-    --verbose                  Verbose output
-    -h, --help                 Show this help message
+  --config CONFIG     Build configuration (Debug/Release, default: Release)
+  --rid RID          Runtime identifier (e.g., linux-x64, osx-arm64)
+  --os OS            Operating system (linux, macos)
 
 Examples:
-    ./build.sh --rid linux-x64 --version 1.0.0
-    ./build.sh --rid osx-x64 --output ./publish
-    ./build.sh --project LanMontainDesktop/LanMontainDesktop.csproj --rid osx-arm64
+  $0 build
+  $0 publish --config Release --rid linux-x64
+  $0 clean
 
 EOF
 }
 
-# Parse arguments
+build_project() {
+    local config="$1"
+    echo "Building $OS ($RID) - $config configuration..."
+    
+    cd "$Root_Dir"
+    
+    dotnet restore
+    dotnet build -c "$config" --no-restore -v minimal
+    
+    echo "✅ Build completed"
+}
+
+publish_project() {
+    local config="$1"
+    local output_dir="$Root_Dir/publish/$RID"
+    
+    echo "Publishing $OS ($RID)..."
+    
+    cd "$Root_Dir"
+    
+    dotnet restore
+    dotnet publish LanMontainDesktop/LanMontainDesktop.csproj \
+        -c "$config" \
+        -o "$output_dir" \
+        --self-contained \
+        -r "$RID" \
+        -p:PublishSingleFile=true \
+        -p:DebugType=none \
+        -v minimal
+    
+    echo "✅ Published to: $output_dir"
+    echo "   Size: $(du -sh "$output_dir" | cut -f1)"
+}
+
+clean_project() {
+    echo "Cleaning build output..."
+    cd "$Root_Dir"
+    
+    rm -rf ./publish
+    rm -rf ./bin
+    rm -rf ./obj
+    find . -name "bin" -type d -exec rm -rf {} + 2>/dev/null || true
+    find . -name "obj" -type d -exec rm -rf {} + 2>/dev/null || true
+    
+    echo "✅ Clean completed"
+}
+
+# Main
+detect_os
+
+config="Release"
+command="build"
+
 while [[ $# -gt 0 ]]; do
     case $1 in
-        -p|--project)
-            PROJECT="$2"
+        build|publish|clean)
+            command="$1"
+            shift
+            ;;
+        --config)
+            config="$2"
             shift 2
             ;;
-        -c|--config)
-            CONFIGURATION="$2"
-            shift 2
-            ;;
-        -r|--rid)
+        --rid)
             RID="$2"
             shift 2
             ;;
-        -v|--version)
-            VERSION="$2"
+        --os)
+            OS="$2"
+            if [[ "$OS" == "linux" ]]; then
+                RID="linux-x64"
+            elif [[ "$OS" == "macos" ]]; then
+                RID="osx-x64"
+            fi
             shift 2
             ;;
-        -o|--output)
-            PUBLISH_DIR="$2"
-            shift 2
-            ;;
-        --skip-restore)
-            SKIP_RESTORE=true
-            shift
-            ;;
-        --verbose)
-            VERBOSE=true
-            shift
-            ;;
         -h|--help)
-            show_help
+            print_usage
             exit 0
             ;;
         *)
-            print_error "Unknown option: $1"
-            show_help
+            echo "Unknown option: $1"
+            print_usage
             exit 1
             ;;
     esac
 done
 
-# Validation
-if [ -z "$RID" ]; then
-    print_error "Runtime Identifier (--rid) is required"
-    show_help
-    exit 1
-fi
-
-if [ ! -f "$PROJECT" ]; then
-    print_error "Project file not found: $PROJECT"
-    exit 1
-fi
-
-# Detect OS
-if [[ "$OSTYPE" == "linux-gnu"* ]]; then
-    OS="linux"
-    DETECTED_RID="linux-x64"
-elif [[ "$OSTYPE" == "darwin"* ]]; then
-    OS="macos"
-    # Try to detect architecture
-    if [ "$(uname -m)" == "arm64" ]; then
-        DETECTED_RID="osx-arm64"
-    else
-        DETECTED_RID="osx-x64"
-    fi
-else
-    print_error "Unsupported OS: $OSTYPE"
-    exit 1
-fi
-
-print_info "Detected OS: $OS ($DETECTED_RID)"
-print_info "Target RID: $RID"
-
-# Read version from csproj if not provided
-if [ -z "$VERSION" ]; then
-    VERSION=$(grep -oP '<Version>\K[^<]*' "$PROJECT" | head -1)
-    if [ -z "$VERSION" ]; then
-        VERSION="1.0.0"
-        print_warning "No version found in csproj, using default: $VERSION"
-    fi
-fi
-
-print_info "Version: $VERSION"
-print_info "Configuration: $CONFIGURATION"
-
-# Set output directory
-if [ -z "$PUBLISH_DIR" ]; then
-    PUBLISH_DIR="./publish/$RID"
-fi
-
-print_info "Output directory: $PUBLISH_DIR"
-
-# Restore dependencies
-if [ "$SKIP_RESTORE" = false ]; then
-    print_info "Restoring dependencies..."
-    if [ "$VERBOSE" = true ]; then
-        dotnet restore --verbosity detailed
-    else
-        dotnet restore
-    fi
-    print_success "Dependencies restored"
-fi
-
-# Build
-print_info "Building..."
-if [ "$VERBOSE" = true ]; then
-    dotnet build "$PROJECT" \
-        -c "$CONFIGURATION" \
-        --no-restore \
-        --verbosity detailed
-else
-    dotnet build "$PROJECT" -c "$CONFIGURATION" --no-restore
-fi
-print_success "Build completed"
-
-# Publish
-print_info "Publishing..."
-PUBLISH_ARGS=(
-    "$PROJECT"
-    "-c" "$CONFIGURATION"
-    "-o" "$PUBLISH_DIR"
-    "-r" "$RID"
-    "--self-contained"
-)
-
-# Add platform-specific publish options
-if [ "$VERBOSE" = true ]; then
-    PUBLISH_ARGS+=("--verbosity" "detailed")
-fi
-
-dotnet publish "${PUBLISH_ARGS[@]}" \
-    -p:PublishSingleFile=true \
-    -p:PublishTrimmed=false \
-    -p:DebugType=embedded \
-    -p:DebugSymbols=false
-
-print_success "Published to: $PUBLISH_DIR"
-
-# Show result
-if [ -d "$PUBLISH_DIR" ]; then
-    SIZE=$(du -sh "$PUBLISH_DIR" | cut -f1)
-    FILE_COUNT=$(find "$PUBLISH_DIR" -type f | wc -l)
-    print_success "Build complete! Output size: $SIZE ($FILE_COUNT files)"
-    
-    if [ "$VERBOSE" = true ]; then
-        print_info "Output contents:"
-        ls -lh "$PUBLISH_DIR"
-    fi
-else
-    print_error "Publish directory not found"
-    exit 1
-fi
-
-print_success "Done!"
+case $command in
+    build)
+        build_project "$config"
+        ;;
+    publish)
+        publish_project "$config"
+        ;;
+    clean)
+        clean_project
+        ;;
+    *)
+        print_usage
+        exit 1
+        ;;
+esac