From a528b623b971aa99274c8b940f8edfbd06103d83 Mon Sep 17 00:00:00 2001
From: grtsinry43 <grtsinry43@outlook.com>
Date: Wed, 8 Oct 2025 17:16:33 +0800
Subject: [PATCH] feat: Implement Design System screen and enhance UI/UX
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This commit introduces a new "Design System" screen for developers and designers, refines navigation animations for a smoother experience, and improves typography consistency across various UI components.

**Key Changes:**

*   **feat(Design System):**
    *   Added a new `DesignSystemScreen.kt` to visually showcase the app's color palette, typography styles, and shape system.
    *   The screen features animated guides and detailed specifications for each design token (e.g., font size, weight, color roles).
    *   A new "About Tangyuan Design System" menu item has been added to the `UserScreen` (for both logged-in and logged-out states), navigating to this new screen.

*   **refactor(Navigation):**
    *   Replaced default navigation transitions with custom animations using `CubicBezierEasing` for a more fluid and responsive feel (e.g., quick spring and fade effects).
    *   Detail screens (`PostDetail`, `UserDetail`, `ImageDetail`) now use a `fadeIn`/`fadeOut` transition to prevent conflicts with shared element animations.
    *   Side-panel screens (`About`, `DesignSystem`) now use a horizontal slide transition.
    *   Navigation between main tabs (`Talk`, `Message`, `User`) is now animated with a horizontal slide and fade.

*   **refactor(Typography & UI):**
    *   Standardized the font weight for titles and important text to `SemiBold` across `PostCardItem`, `PostDetailScreen`, and `CommentComponents` for better visual hierarchy.
    *   Updated the `PostDetailScreen` top bar title to "帖子详情" for clarity.
    *   Replaced the literary font with the general-purpose font in some UI elements like comment interaction labels for improved readability.
    *   Enabled image click navigation from the `UserDetailScreen`'s post feed.

*   **feat(Create Post):**
    *   Introduced `CreatePostDto.kt` and `CreatePostRepository.kt` to support post creation.
    *   The repository now handles fetching categories and creating posts through a two-step process: creating post metadata and then the post body.
    *   Added `CreatePostState` to manage the UI state for the post creation screen, including validation for content length and image limits.
---
 .idea/deploymentTargetSelector.xml            |   2 +-
 .idea/deviceManager.xml                       |  13 +
 .../main/java/com/qingshuige/tangyuan/App.kt  | 282 ++++++++-
 .../tangyuan/model/CreatePostDto.kt           |  67 ++
 .../qingshuige/tangyuan/navigation/Screen.kt  |   2 +
 .../repository/CreatePostRepository.kt        |  66 ++
 .../ui/components/CommentComponents.kt        |  11 +-
 .../tangyuan/ui/components/PostCardItem.kt    |   2 +-
 .../tangyuan/ui/screens/DesignSystemScreen.kt | 591 ++++++++++++++++++
 .../tangyuan/ui/screens/PostDetailScreen.kt   |   6 +-
 .../tangyuan/ui/screens/UserDetailScreen.kt   |   7 +-
 .../tangyuan/ui/screens/UserScreen.kt         |  82 ++-
 12 files changed, 1103 insertions(+), 28 deletions(-)
 create mode 100644 .idea/deviceManager.xml
 create mode 100644 app/src/main/java/com/qingshuige/tangyuan/model/CreatePostDto.kt
 create mode 100644 app/src/main/java/com/qingshuige/tangyuan/repository/CreatePostRepository.kt
 create mode 100644 app/src/main/java/com/qingshuige/tangyuan/ui/screens/DesignSystemScreen.kt

diff --git a/.idea/deploymentTargetSelector.xml b/.idea/deploymentTargetSelector.xml
index d912518..bf30898 100644
--- a/.idea/deploymentTargetSelector.xml
+++ b/.idea/deploymentTargetSelector.xml
@@ -4,7 +4,7 @@
     <selectionStates>
       <SelectionState runConfigName="app">
         <option name="selectionMode" value="DROPDOWN" />
-        <DropdownSelection timestamp="2025-10-06T14:55:34.827294Z">
+        <DropdownSelection timestamp="2025-10-08T05:47:59.421656019Z">
           <Target type="DEFAULT_BOOT">
             <handle>
               <DeviceId pluginId="PhysicalDevice" identifier="serial=6fbe7ac" />
diff --git a/.idea/deviceManager.xml b/.idea/deviceManager.xml
new file mode 100644
index 0000000..91f9558
--- /dev/null
+++ b/.idea/deviceManager.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DeviceTable">
+    <option name="columnSorters">
+      <list>
+        <ColumnSorterState>
+          <option name="column" value="Name" />
+          <option name="order" value="ASCENDING" />
+        </ColumnSorterState>
+      </list>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/app/src/main/java/com/qingshuige/tangyuan/App.kt b/app/src/main/java/com/qingshuige/tangyuan/App.kt
index d1c7850..a528ea5 100644
--- a/app/src/main/java/com/qingshuige/tangyuan/App.kt
+++ b/app/src/main/java/com/qingshuige/tangyuan/App.kt
@@ -21,6 +21,7 @@ import com.qingshuige.tangyuan.ui.components.PageLevel
 import com.qingshuige.tangyuan.ui.components.TangyuanBottomAppBar
 import com.qingshuige.tangyuan.ui.components.TangyuanTopBar
 import com.qingshuige.tangyuan.ui.screens.AboutScreen
+import com.qingshuige.tangyuan.ui.screens.DesignSystemScreen
 import com.qingshuige.tangyuan.ui.screens.PostDetailScreen
 import com.qingshuige.tangyuan.ui.screens.ImageDetailScreen
 import com.qingshuige.tangyuan.ui.screens.TalkScreen
@@ -29,6 +30,10 @@ import com.qingshuige.tangyuan.ui.screens.UserDetailScreen
 import com.qingshuige.tangyuan.ui.screens.UserScreen
 import com.qingshuige.tangyuan.viewmodel.UserViewModel
 
+// 自定义带回弹效果的easing - 快速流畅
+private val QuickSpringEasing = CubicBezierEasing(0.34f, 1.3f, 0.64f, 1.0f)
+private val QuickEasing = CubicBezierEasing(0.2f, 0.0f, 0.0f, 1.0f)
+
 @OptIn(ExperimentalSharedTransitionApi::class)
 @Composable
 fun App() {
@@ -53,7 +58,8 @@ fun App() {
                     },
                     onAboutClick = { navController.navigate(Screen.About.route) },
                     sharedTransitionScope = this@SharedTransitionLayout,
-                    animatedContentScope = this@composable
+                    animatedContentScope = this@composable,
+                    onDesignSystemClick = { navController.navigate(Screen.DesignSystem.route) }
                 )
             }
 
@@ -63,8 +69,8 @@ fun App() {
                     slideInVertically(
                         initialOffsetY = { it },
                         animationSpec = tween(
-                            durationMillis = 800,
-                            easing = FastOutSlowInEasing
+                            durationMillis = 350,
+                            easing = QuickSpringEasing
                         )
                     )
                 },
@@ -72,8 +78,8 @@ fun App() {
                     slideOutVertically(
                         targetOffsetY = { it },
                         animationSpec = tween(
-                            durationMillis = 600,
-                            easing = FastOutSlowInEasing
+                            durationMillis = 250,
+                            easing = QuickEasing
                         )
                     )
                 },
@@ -81,8 +87,8 @@ fun App() {
                     slideOutVertically(
                         targetOffsetY = { it },
                         animationSpec = tween(
-                            durationMillis = 600,
-                            easing = FastOutSlowInEasing
+                            durationMillis = 250,
+                            easing = QuickEasing
                         )
                     )
                 }
@@ -90,12 +96,44 @@ fun App() {
                 LoginScreen(navController = navController)
             }
 
-            // 帖子详情页
+            // 帖子详情页 - 使用淡入淡出避免与共享元素冲突
             composable(
                 route = Screen.PostDetail.route,
                 arguments = listOf(
                     navArgument("postId") { type = NavType.IntType }
-                )
+                ),
+                enterTransition = {
+                    fadeIn(
+                        animationSpec = tween(
+                            durationMillis = 300,
+                            easing = QuickEasing
+                        )
+                    )
+                },
+                exitTransition = {
+                    fadeOut(
+                        animationSpec = tween(
+                            durationMillis = 200,
+                            easing = QuickEasing
+                        )
+                    )
+                },
+                popEnterTransition = {
+                    fadeIn(
+                        animationSpec = tween(
+                            durationMillis = 200,
+                            easing = QuickEasing
+                        )
+                    )
+                },
+                popExitTransition = {
+                    fadeOut(
+                        animationSpec = tween(
+                            durationMillis = 300,
+                            easing = QuickEasing
+                        )
+                    )
+                }
             ) { backStackEntry ->
                 val postId = backStackEntry.arguments?.getInt("postId") ?: 0
 
@@ -118,13 +156,45 @@ fun App() {
                 )
             }
 
-            // 图片详情页
+            // 图片详情页 - 使用淡入淡出避免与共享元素冲突
             composable(
                 route = Screen.ImageDetail.route,
                 arguments = listOf(
                     navArgument("postId") { type = NavType.IntType },
                     navArgument("imageIndex") { type = NavType.IntType }
-                )
+                ),
+                enterTransition = {
+                    fadeIn(
+                        animationSpec = tween(
+                            durationMillis = 300,
+                            easing = QuickEasing
+                        )
+                    )
+                },
+                exitTransition = {
+                    fadeOut(
+                        animationSpec = tween(
+                            durationMillis = 200,
+                            easing = QuickEasing
+                        )
+                    )
+                },
+                popEnterTransition = {
+                    fadeIn(
+                        animationSpec = tween(
+                            durationMillis = 200,
+                            easing = QuickEasing
+                        )
+                    )
+                },
+                popExitTransition = {
+                    fadeOut(
+                        animationSpec = tween(
+                            durationMillis = 300,
+                            easing = QuickEasing
+                        )
+                    )
+                }
             ) { backStackEntry ->
                 val postId = backStackEntry.arguments?.getInt("postId") ?: 0
                 val imageIndex = backStackEntry.arguments?.getInt("imageIndex") ?: 0
@@ -149,12 +219,44 @@ fun App() {
                 )
             }
 
-            // 用户详情页
+            // 用户详情页 - 使用淡入淡出避免与共享元素冲突
             composable(
                 route = Screen.UserDetail.route,
                 arguments = listOf(
                     navArgument("userId") { type = NavType.IntType }
-                )
+                ),
+                enterTransition = {
+                    fadeIn(
+                        animationSpec = tween(
+                            durationMillis = 300,
+                            easing = QuickEasing
+                        )
+                    )
+                },
+                exitTransition = {
+                    fadeOut(
+                        animationSpec = tween(
+                            durationMillis = 200,
+                            easing = QuickEasing
+                        )
+                    )
+                },
+                popEnterTransition = {
+                    fadeIn(
+                        animationSpec = tween(
+                            durationMillis = 200,
+                            easing = QuickEasing
+                        )
+                    )
+                },
+                popExitTransition = {
+                    fadeOut(
+                        animationSpec = tween(
+                            durationMillis = 300,
+                            easing = QuickEasing
+                        )
+                    )
+                }
             ) { backStackEntry ->
                 val userId = backStackEntry.arguments?.getInt("userId") ?: 0
 
@@ -164,6 +266,14 @@ fun App() {
                     onPostClick = { postId ->
                         navController.navigate(Screen.PostDetail.createRoute(postId))
                     },
+                    onImageClick = { postId, imageIndex ->
+                        navController.navigate(Screen.ImageDetail.createRoute(postId, imageIndex)) {
+                            popUpTo(Screen.PostDetail.createRoute(postId)) {
+                                inclusive = true
+                            }
+                            launchSingleTop = true
+                        }
+                    },
                     onFollowClick = {
                         // TODO: 实现关注功能
                     },
@@ -172,11 +282,93 @@ fun App() {
                 )
             }
 
-            composable(Screen.About.route) {
+            composable(
+                route = Screen.About.route,
+                enterTransition = {
+                    slideInHorizontally(
+                        initialOffsetX = { it },
+                        animationSpec = tween(
+                            durationMillis = 300,
+                            easing = QuickSpringEasing
+                        )
+                    )
+                },
+                exitTransition = {
+                    slideOutHorizontally(
+                        targetOffsetX = { -it / 3 },
+                        animationSpec = tween(
+                            durationMillis = 300,
+                            easing = QuickEasing
+                        )
+                    )
+                },
+                popEnterTransition = {
+                    slideInHorizontally(
+                        initialOffsetX = { -it / 3 },
+                        animationSpec = tween(
+                            durationMillis = 300,
+                            easing = QuickEasing
+                        )
+                    )
+                },
+                popExitTransition = {
+                    slideOutHorizontally(
+                        targetOffsetX = { it },
+                        animationSpec = tween(
+                            durationMillis = 250,
+                            easing = QuickEasing
+                        )
+                    )
+                }
+            ) {
                 AboutScreen(
                     onBackClick = { navController.popBackStack() }
                 )
             }
+
+            composable(
+                route = Screen.DesignSystem.route,
+                enterTransition = {
+                    slideInHorizontally(
+                        initialOffsetX = { it },
+                        animationSpec = tween(
+                            durationMillis = 300,
+                            easing = QuickSpringEasing
+                        )
+                    )
+                },
+                exitTransition = {
+                    slideOutHorizontally(
+                        targetOffsetX = { -it / 3 },
+                        animationSpec = tween(
+                            durationMillis = 300,
+                            easing = QuickEasing
+                        )
+                    )
+                },
+                popEnterTransition = {
+                    slideInHorizontally(
+                        initialOffsetX = { -it / 3 },
+                        animationSpec = tween(
+                            durationMillis = 300,
+                            easing = QuickEasing
+                        )
+                    )
+                },
+                popExitTransition = {
+                    slideOutHorizontally(
+                        targetOffsetX = { it },
+                        animationSpec = tween(
+                            durationMillis = 250,
+                            easing = QuickEasing
+                        )
+                    )
+                }
+            ) {
+                DesignSystemScreen(
+                    onBackClick = { navController.popBackStack() }
+                )
+            }
         }
     }
 }
@@ -189,6 +381,7 @@ fun MainFlow(
     onImageClick: (Int, Int) -> Unit = { _, _ -> },
     onAuthorClick: (Int) -> Unit = {},
     onAboutClick: () -> Unit,
+    onDesignSystemClick: () -> Unit,
     sharedTransitionScope: SharedTransitionScope? = null,
     animatedContentScope: AnimatedContentScope? = null,
     userViewModel: UserViewModel = hiltViewModel()
@@ -254,7 +447,63 @@ fun MainFlow(
         NavHost(
             navController = mainNavController,
             startDestination = Screen.Talk.route,
-            modifier = Modifier.padding(innerPadding)
+            modifier = Modifier.padding(innerPadding),
+            enterTransition = {
+                slideInHorizontally(
+                    initialOffsetX = { it / 2 },
+                    animationSpec = tween(
+                        durationMillis = 200,
+                        easing = QuickEasing
+                    )
+                ) + fadeIn(
+                    animationSpec = tween(
+                        durationMillis = 200,
+                        easing = QuickEasing
+                    )
+                )
+            },
+            exitTransition = {
+                slideOutHorizontally(
+                    targetOffsetX = { -it / 2 },
+                    animationSpec = tween(
+                        durationMillis = 200,
+                        easing = QuickEasing
+                    )
+                ) + fadeOut(
+                    animationSpec = tween(
+                        durationMillis = 200,
+                        easing = QuickEasing
+                    )
+                )
+            },
+            popEnterTransition = {
+                slideInHorizontally(
+                    initialOffsetX = { -it / 2 },
+                    animationSpec = tween(
+                        durationMillis = 200,
+                        easing = QuickEasing
+                    )
+                ) + fadeIn(
+                    animationSpec = tween(
+                        durationMillis = 200,
+                        easing = QuickEasing
+                    )
+                )
+            },
+            popExitTransition = {
+                slideOutHorizontally(
+                    targetOffsetX = { it / 2 },
+                    animationSpec = tween(
+                        durationMillis = 200,
+                        easing = QuickEasing
+                    )
+                ) + fadeOut(
+                    animationSpec = tween(
+                        durationMillis = 200,
+                        easing = QuickEasing
+                    )
+                )
+            }
         ) {
             composable(Screen.Talk.route) {
                 TalkScreen(
@@ -278,7 +527,8 @@ fun MainFlow(
                     onSettings = {
                         // TODO: 导航到设置页面
                     },
-                    onAbout = onAboutClick
+                    onAbout = onAboutClick,
+                    onDesignSystem = onDesignSystemClick,
                 )
             }
         }
diff --git a/app/src/main/java/com/qingshuige/tangyuan/model/CreatePostDto.kt b/app/src/main/java/com/qingshuige/tangyuan/model/CreatePostDto.kt
new file mode 100644
index 0000000..fd2c702
--- /dev/null
+++ b/app/src/main/java/com/qingshuige/tangyuan/model/CreatePostDto.kt
@@ -0,0 +1,67 @@
+package com.qingshuige.tangyuan.model
+
+import java.util.Date
+
+data class CreatePostDto(
+    val textContent: String,
+    val categoryId: Int,
+    val sectionId: Int, // 0 或 1
+    val isVisible: Boolean = true,
+    val imageUUIDs: List<String> = emptyList()
+) {
+    
+    fun toCreatPostMetadataDto(userId: Int): CreatPostMetadataDto {
+        return CreatPostMetadataDto(
+            isVisible = isVisible,
+            postDateTime = Date(),
+            sectionId = sectionId,
+            categoryId = categoryId,
+            userId = userId
+        )
+    }
+    
+    fun toPostBody(postId: Int): PostBody {
+        return PostBody(
+            postId = postId,
+            textContent = textContent,
+            image1UUID = imageUUIDs.getOrNull(0),
+            image2UUID = imageUUIDs.getOrNull(1),
+            image3UUID = imageUUIDs.getOrNull(2)
+        )
+    }
+}
+
+data class CreatePostState(
+    val isLoading: Boolean = false,
+    val content: String = "",
+    val selectedCategoryId: Int? = null,
+    val selectedSectionId: Int = 0, // 默认分区0
+    val selectedImageUris: List<String> = emptyList(),
+    val uploadedImageUUIDs: List<String> = emptyList(),
+    val categories: List<Category> = emptyList(),
+    val isLoadingCategories: Boolean = false,
+    val isUploading: Boolean = false,
+    val uploadProgress: Map<String, Float> = emptyMap(),
+    val error: String? = null,
+    val success: Boolean = false
+) {
+    
+    val canPost: Boolean
+        get() = content.isNotBlank() && 
+                selectedCategoryId != null && 
+                !isLoading && 
+                !isUploading &&
+                uploadedImageUUIDs.size == selectedImageUris.size
+    
+    val remainingImageSlots: Int
+        get() = maxOf(0, 3 - selectedImageUris.size)
+        
+    val hasImages: Boolean
+        get() = selectedImageUris.isNotEmpty()
+        
+    val isContentValid: Boolean
+        get() = content.isNotBlank() && content.length <= 2000
+        
+    val contentCharCount: Int
+        get() = content.length
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/qingshuige/tangyuan/navigation/Screen.kt b/app/src/main/java/com/qingshuige/tangyuan/navigation/Screen.kt
index f0657b4..121e5f9 100644
--- a/app/src/main/java/com/qingshuige/tangyuan/navigation/Screen.kt
+++ b/app/src/main/java/com/qingshuige/tangyuan/navigation/Screen.kt
@@ -7,6 +7,8 @@ sealed class Screen(val route: String, val title: String) {
     object Message : Screen("message", "消息")
     object User : Screen("settings", "我的")
     object About : Screen("about", "关于")
+
+    object DesignSystem : Screen("design_system", "设计系统")
     object PostDetail : Screen("post_detail/{postId}", "帖子详情") {
         fun createRoute(postId: Int) = "post_detail/$postId"
     }
diff --git a/app/src/main/java/com/qingshuige/tangyuan/repository/CreatePostRepository.kt b/app/src/main/java/com/qingshuige/tangyuan/repository/CreatePostRepository.kt
new file mode 100644
index 0000000..a470628
--- /dev/null
+++ b/app/src/main/java/com/qingshuige/tangyuan/repository/CreatePostRepository.kt
@@ -0,0 +1,66 @@
+package com.qingshuige.tangyuan.repository
+
+import com.qingshuige.tangyuan.api.ApiInterface
+import com.qingshuige.tangyuan.model.Category
+import com.qingshuige.tangyuan.model.CreatePostDto
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.flow
+import retrofit2.awaitResponse
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+class CreatePostRepository @Inject constructor(
+    private val apiInterface: ApiInterface
+) {
+    
+    /**
+     * 获取所有分类
+     */
+    fun getAllCategories(): Flow<List<Category>> = flow {
+        try {
+            val response = apiInterface.getAllCategories().awaitResponse()
+            if (response.isSuccessful) {
+                response.body()?.let { emit(it) } 
+                    ?: emit(emptyList())
+            } else {
+                throw Exception("Failed to get categories: ${response.message()}")
+            }
+        } catch (e: Exception) {
+            throw Exception("Network error: ${e.message}")
+        }
+    }
+    
+    /**
+     * 创建新帖子
+     * 1. 先创建PostMetadata获取postId
+     * 2. 再创建PostBody
+     */
+    suspend fun createPost(createPostDto: CreatePostDto, userId: Int): Result<Int> {
+        return try {
+            // 1. 创建PostMetadata
+            val metadataDto = createPostDto.toCreatPostMetadataDto(userId)
+            val metadataResponse = apiInterface.postPostMetadata(metadataDto).awaitResponse()
+            
+            if (!metadataResponse.isSuccessful) {
+                return Result.failure(Exception("Failed to create post metadata: ${metadataResponse.message()}"))
+            }
+            
+            val postId = metadataResponse.body()?.get("postId") 
+                ?: return Result.failure(Exception("No post ID returned"))
+            
+            // 2. 创建PostBody
+            val postBody = createPostDto.toPostBody(postId)
+            val bodyResponse = apiInterface.postPostBody(postBody).awaitResponse()
+            
+            if (!bodyResponse.isSuccessful) {
+                return Result.failure(Exception("Failed to create post body: ${bodyResponse.message()}"))
+            }
+            
+            Result.success(postId)
+            
+        } catch (e: Exception) {
+            Result.failure(Exception("Network error: ${e.message}"))
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/qingshuige/tangyuan/ui/components/CommentComponents.kt b/app/src/main/java/com/qingshuige/tangyuan/ui/components/CommentComponents.kt
index 21fb8cd..f50502f 100644
--- a/app/src/main/java/com/qingshuige/tangyuan/ui/components/CommentComponents.kt
+++ b/app/src/main/java/com/qingshuige/tangyuan/ui/components/CommentComponents.kt
@@ -32,7 +32,6 @@ import com.qingshuige.tangyuan.TangyuanApplication
 import com.qingshuige.tangyuan.model.CommentCard
 import com.qingshuige.tangyuan.ui.theme.LiteraryFontFamily
 import com.qingshuige.tangyuan.ui.theme.TangyuanGeneralFontFamily
-import com.qingshuige.tangyuan.ui.theme.TangyuanShapes
 import com.qingshuige.tangyuan.utils.withPanguSpacing
 import java.util.Date
 
@@ -123,6 +122,7 @@ private fun CommentMainContent(
                 lineHeight = 20.sp
             ),
             fontFamily = LiteraryFontFamily,
+            fontWeight = FontWeight.SemiBold,
             color = MaterialTheme.colorScheme.onSurface
         )
         
@@ -331,7 +331,7 @@ private fun CommentActionButton(
             Text(
                 text = count.toString(),
                 style = MaterialTheme.typography.labelSmall,
-                fontFamily = LiteraryFontFamily,
+                fontFamily = TangyuanGeneralFontFamily,
                 color = color,
                 fontSize = 11.sp
             )
@@ -342,7 +342,7 @@ private fun CommentActionButton(
             Text(
                 text = text,
                 style = MaterialTheme.typography.labelSmall,
-                fontFamily = LiteraryFontFamily,
+                fontFamily = TangyuanGeneralFontFamily,
                 color = color,
                 fontSize = 11.sp
             )
@@ -449,6 +449,7 @@ private fun ReplyItem(
                 lineHeight = 18.sp
             ),
             fontFamily = LiteraryFontFamily,
+            fontWeight = FontWeight.SemiBold,
             color = MaterialTheme.colorScheme.onSurface
         )
         
@@ -551,7 +552,9 @@ fun CommentInputBar(
                             text = if (replyToComment != null) "回复 ${replyToComment.authorName}" + ": " + {replyToComment.content.take(20) + if (replyToComment.content.length > 20) "..." else ""}()
                                     else "说点什么...",
                             fontFamily = LiteraryFontFamily,
-                            color = MaterialTheme.colorScheme.onSurfaceVariant
+                            color = MaterialTheme.colorScheme.onSurfaceVariant.copy(
+                                alpha = 0.5f
+                            )
                         )
                     },
                     shape = RoundedCornerShape(20.dp),
diff --git a/app/src/main/java/com/qingshuige/tangyuan/ui/components/PostCardItem.kt b/app/src/main/java/com/qingshuige/tangyuan/ui/components/PostCardItem.kt
index f780ee7..f76dfca 100644
--- a/app/src/main/java/com/qingshuige/tangyuan/ui/components/PostCardItem.kt
+++ b/app/src/main/java/com/qingshuige/tangyuan/ui/components/PostCardItem.kt
@@ -322,7 +322,7 @@ private fun PostCardContent(postCard: PostCard) {
                 lineHeight = 22.sp
             ),
             fontFamily = LiteraryFontFamily,
-            fontWeight = FontWeight.Medium,
+            fontWeight = FontWeight.SemiBold,
             color = MaterialTheme.colorScheme.onSurface,
             maxLines = 6,
             overflow = TextOverflow.Ellipsis
diff --git a/app/src/main/java/com/qingshuige/tangyuan/ui/screens/DesignSystemScreen.kt b/app/src/main/java/com/qingshuige/tangyuan/ui/screens/DesignSystemScreen.kt
new file mode 100644
index 0000000..b816891
--- /dev/null
+++ b/app/src/main/java/com/qingshuige/tangyuan/ui/screens/DesignSystemScreen.kt
@@ -0,0 +1,591 @@
+package com.qingshuige.tangyuan.ui.screens
+
+import androidx.compose.animation.core.Animatable
+import androidx.compose.animation.core.tween
+import androidx.compose.foundation.BorderStroke
+import androidx.compose.foundation.Canvas
+import androidx.compose.foundation.background
+import androidx.compose.foundation.border
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.ArrowBack
+import androidx.compose.material.icons.filled.MoreVert
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.graphics.Brush
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.PathEffect
+import androidx.compose.ui.graphics.Shape
+import androidx.compose.ui.graphics.drawscope.drawIntoCanvas
+import androidx.compose.ui.graphics.nativeCanvas
+import androidx.compose.ui.graphics.toArgb
+import androidx.compose.ui.layout.LayoutCoordinates
+import androidx.compose.ui.layout.onGloballyPositioned
+import androidx.compose.ui.layout.positionInParent
+import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import com.qingshuige.tangyuan.ui.theme.*
+import com.qingshuige.tangyuan.utils.withPanguSpacing
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
+
+/**
+ * 设计系统预览页面
+ *
+ * 用于集中展示和测试 `TangyuanTheme` 中的颜色、排版和形状，
+ * 方便设计师和开发者快速查阅和验证 UI 组件。
+ */
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun DesignSystemScreen(
+    onBackClick: () -> Unit = {}
+) {
+    val scrollState = rememberScrollState()
+
+    Scaffold(
+        topBar = {
+            TopAppBar(
+                title = {
+                    Text(
+                        text = "Tangyuan Design System",
+                        style = MaterialTheme.typography.titleMedium,
+                        fontWeight = FontWeight.Bold,
+                        modifier = Modifier.fillMaxWidth(),
+                        textAlign = TextAlign.Center
+                    )
+                },
+                navigationIcon = {
+                    IconButton(onClick = onBackClick) {
+                        Icon(
+                            imageVector = Icons.Default.ArrowBack,
+                            contentDescription = "返回",
+                            tint = MaterialTheme.colorScheme.onSurface
+                        )
+                    }
+                },
+                actions = {
+                    IconButton(onClick = {}) {
+                        Icon(
+                            imageVector = Icons.Default.MoreVert,
+                            contentDescription = "其他",
+                            tint = MaterialTheme.colorScheme.onSurface
+                        )
+                    }
+                },
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = MaterialTheme.colorScheme.surfaceVariant
+                ),
+                modifier = Modifier.fillMaxWidth()
+            )
+        }
+    ) { innerPadding ->
+        Box(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(innerPadding)
+        ) {
+            Column(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .background(MaterialTheme.colorScheme.background)
+                    .verticalScroll(scrollState)
+                    .padding(16.dp)
+            ) {
+                DesignTitleWithGuides()
+
+                // 颜色系统
+                DesignSection(title = "颜色系统 (Colors)") {
+                    ColorSystemPreview()
+                }
+
+                // 排版系统
+                DesignSection(title = "排版系统 (Typography)") {
+                    TypographySystemPreview()
+                }
+
+                // 形状系统
+                DesignSection(title = "形状系统 (Shapes)") {
+                    ShapeSystemPreview()
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun DesignTitleWithGuides() {
+    // 状态变量，用于存储测量到的标题和副标题的布局坐标
+    var titleCoords by remember { mutableStateOf<LayoutCoordinates?>(null) }
+    var subtitleCoords by remember { mutableStateOf<LayoutCoordinates?>(null) }
+
+    // 动画状态：lineProgress 控制线条划过，alpha 控制淡出
+    val lineProgress = remember { Animatable(0f) }
+    val alpha = remember { Animatable(1f) }
+
+    // 使用 LaunchedEffect 启动一次性动画
+    LaunchedEffect(Unit) {
+        // 启动一个协程来执行动画序列
+        launch {
+            // 1. 线条划入动画
+            lineProgress.animateTo(1f, animationSpec = tween(durationMillis = 600))
+            // 2. 短暂保持可见
+            delay(200)
+            // 3. 线条淡出动画
+            alpha.animateTo(0f, animationSpec = tween(durationMillis = 400))
+        }
+    }
+
+    // 定义参考线的颜色
+    val guideColor = MaterialTheme.colorScheme.primary.copy(alpha = 0.7f)
+
+    Box(
+        modifier = Modifier.padding(bottom = 24.dp)
+    ) {
+        // Canvas 用于在文本背后绘制引导线
+        Canvas(modifier = Modifier.matchParentSize()) {
+            val titleLayout = titleCoords
+            val subtitleLayout = subtitleCoords
+
+            // 确保坐标已经被测量到才开始绘制
+            if (titleLayout != null && subtitleLayout != null) {
+                val animatedAlphaColor = guideColor.copy(alpha = alpha.value)
+
+                // 计算整个标题区域的边界
+                val left = 0f
+                val top = 0f
+                val right = titleLayout.size.width.toFloat()
+                val bottom = subtitleLayout.positionInParent().y + subtitleLayout.size.height
+
+                // 动画进度
+                val progress = lineProgress.value
+
+                val dashEffect = PathEffect.dashPathEffect(floatArrayOf(15f, 15f), 0f)
+
+                // 绘制四条动态参考线
+                // 1. 从左到右的上边线
+                drawLine(animatedAlphaColor, start = Offset(left, top), end = Offset(right * progress, top), strokeWidth = 1.dp.toPx(), pathEffect = dashEffect)
+                // 2. 从左到右的下边线
+                drawLine(animatedAlphaColor, start = Offset(left, bottom), end = Offset(right * progress, bottom), strokeWidth = 1.dp.toPx(), pathEffect = dashEffect)
+                // 3. 从上到下的左边线
+                drawLine(animatedAlphaColor, start = Offset(left, top), end = Offset(left, bottom * progress), strokeWidth = 1.dp.toPx(), pathEffect = dashEffect)
+                // 4. 从上到下的右边线
+                drawLine(animatedAlphaColor, start = Offset(right, top), end = Offset(right, bottom * progress), strokeWidth = 1.dp.toPx(), pathEffect = dashEffect)
+            }
+        }
+
+        // 实际的标题和副标题文本
+        Column {
+            Text(
+                text = "糖原社区设计系统",
+                style = MaterialTheme.typography.headlineLarge,
+                color = MaterialTheme.colorScheme.primary,
+                modifier = Modifier.onGloballyPositioned { coordinates ->
+                    titleCoords = coordinates
+                }
+            )
+            Text(
+                text = "现代简洁 · 文化雅致",
+                style = MaterialTheme.typography.titleMedium,
+                fontFamily = LiteraryFontFamily, // 保留文学字体
+                color = MaterialTheme.colorScheme.onSurfaceVariant,
+                modifier = Modifier.onGloballyPositioned { coordinates ->
+                    subtitleCoords = coordinates
+                }
+            )
+        }
+    }
+}
+
+
+/**
+ * 设计系统的分区组件，包含标题和内容
+ */
+@Composable
+private fun DesignSection(title: String, content: @Composable () -> Unit) {
+    Column(modifier = Modifier.padding(vertical = 16.dp)) {
+        Text(
+            text = title,
+            style = MaterialTheme.typography.titleLarge,
+            modifier = Modifier.padding(bottom = 12.dp)
+        )
+        Surface(
+            shape = MaterialTheme.shapes.medium,
+            color = MaterialTheme.colorScheme.surface,
+            border = BorderStroke(1.dp, MaterialTheme.colorScheme.outline),
+            modifier = Modifier.fillMaxWidth()
+        ) {
+            Column(modifier = Modifier.padding(16.dp)) {
+                content()
+            }
+        }
+    }
+}
+
+/**
+ * 颜色系统预览
+ */
+@Composable
+private fun ColorSystemPreview() {
+    Column(verticalArrangement = Arrangement.spacedBy(16.dp)) {
+        Text("主题色 (Light / Dark)", style = MaterialTheme.typography.titleMedium)
+        Row(
+            modifier = Modifier.fillMaxWidth(),
+            horizontalArrangement = Arrangement.SpaceAround
+        ) {
+            ColorRoleItem("Primary", TangyuanColors.PrimaryLight, TangyuanColors.PrimaryDark)
+            ColorRoleItem("Secondary", TangyuanColors.SecondaryLight, TangyuanColors.SecondaryDark)
+            ColorRoleItem("Tertiary", TangyuanColors.TertiaryLight, TangyuanColors.TertiaryDark)
+            ColorRoleItem("Accent", TangyuanColors.AccentLight, TangyuanColors.AccentDark)
+        }
+        Spacer(Modifier.height(8.dp))
+
+        Text("功能色 (Success / Warning / Error)", style = MaterialTheme.typography.titleMedium)
+        Row(
+            modifier = Modifier.fillMaxWidth(),
+            horizontalArrangement = Arrangement.SpaceAround
+        ) {
+            ColorFunctionItem("Success", TangyuanColors.SuccessLight, TangyuanColors.SuccessDark)
+            ColorFunctionItem("Warning", TangyuanColors.WarningLight, TangyuanColors.WarningDark)
+            ColorFunctionItem("Error", TangyuanColors.ErrorLight, TangyuanColors.ErrorDark)
+        }
+        Spacer(Modifier.height(8.dp))
+
+        Text("界面基础色 (Background / Surface)", style = MaterialTheme.typography.titleMedium)
+        Row(
+            modifier = Modifier.fillMaxWidth(),
+            horizontalArrangement = Arrangement.spacedBy(8.dp)
+        ) {
+            SurfaceColorItem(
+                "Background",
+                TangyuanColors.BackgroundLight,
+                TangyuanColors.BackgroundDark,
+                TangyuanColors.OnBackgroundLight,
+                TangyuanColors.OnBackgroundDark
+            )
+            SurfaceColorItem(
+                "Surface",
+                TangyuanColors.SurfaceLight,
+                TangyuanColors.SurfaceDark,
+                TangyuanColors.OnSurfaceLight,
+                TangyuanColors.OnSurfaceDark
+            )
+        }
+    }
+}
+
+@Composable
+private fun ColorRoleItem(name: String, lightColor: Color, darkColor: Color) {
+    Column(horizontalAlignment = Alignment.CenterHorizontally) {
+        Row {
+            Box(
+                modifier = Modifier
+                    .size(50.dp)
+                    .background(lightColor)
+            )
+            Box(
+                modifier = Modifier
+                    .size(50.dp)
+                    .background(darkColor)
+            )
+        }
+        Text(name, style = MaterialTheme.typography.labelMedium)
+    }
+}
+
+@Composable
+private fun RowScope.ColorFunctionItem(name: String, lightColor: Color, darkColor: Color) {
+    Column(
+        horizontalAlignment = Alignment.CenterHorizontally,
+        modifier = Modifier.weight(1f)
+    ) {
+        Box(
+            modifier = Modifier
+                .height(40.dp)
+                .fillMaxWidth()
+                .background(
+                    brush = Brush.horizontalGradient(listOf(lightColor, darkColor)),
+                    shape = MaterialTheme.shapes.small
+                )
+                .clip(MaterialTheme.shapes.small)
+        )
+        Text(
+            name,
+            style = MaterialTheme.typography.bodySmall,
+            modifier = Modifier.padding(top = 4.dp)
+        )
+    }
+}
+
+@Composable
+private fun RowScope.SurfaceColorItem(
+    name: String,
+    lightBg: Color,
+    darkBg: Color,
+    lightContent: Color,
+    darkContent: Color
+) {
+    Column(
+        modifier = Modifier.weight(1f),
+        horizontalAlignment = Alignment.CenterHorizontally
+    ) {
+        Row {
+            Box(
+                modifier = Modifier
+                    .size(60.dp)
+                    .background(lightBg),
+                contentAlignment = Alignment.Center
+            ) {
+                Text("Text", color = lightContent, style = MaterialTheme.typography.labelSmall)
+            }
+            Box(
+                modifier = Modifier
+                    .size(60.dp)
+                    .background(darkBg),
+                contentAlignment = Alignment.Center
+            ) {
+                Text("Text", color = darkContent, style = MaterialTheme.typography.labelSmall)
+            }
+        }
+        Text(name, style = MaterialTheme.typography.labelMedium)
+    }
+}
+
+/**
+ * 排版系统预览
+ */
+@Composable
+private fun TypographySystemPreview() {
+    val exampleText = "糖原社区 Tangyuan 2025"
+    Column(verticalArrangement = Arrangement.spacedBy(16.dp)) {
+        // M3 Type Scale
+        TypographyItem("Headline Medium", exampleText, MaterialTheme.typography.headlineMedium)
+        TypographyItem("Title Large", exampleText, MaterialTheme.typography.titleLarge)
+        TypographyItem("Body Large", exampleText, MaterialTheme.typography.bodyLarge)
+        TypographyItem("Label Large", exampleText, MaterialTheme.typography.labelLarge)
+
+        // Font Weight Section
+        Spacer(Modifier.height(16.dp))
+        Text("字重 (Font Weights)", style = MaterialTheme.typography.titleMedium)
+        FontWeightShowcase()
+
+        // Chinese & Mixed Typography Section
+        Spacer(Modifier.height(16.dp))
+        Text("中英混排处理", style = MaterialTheme.typography.titleMedium)
+        Column(verticalArrangement = Arrangement.spacedBy(8.dp)) {
+            Text("自动盘古之白 (Pangu Spacing)", style = MaterialTheme.typography.titleSmall)
+            Text(
+                text = "在Tangyuan中使用Jetpack Compose构建UI。",
+                style = MaterialTheme.typography.bodyMedium,
+                color = MaterialTheme.colorScheme.onSurfaceVariant
+            )
+            Text(
+                text = "在Tangyuan中使用Jetpack Compose构建UI。".withPanguSpacing(),
+                style = MaterialTheme.typography.bodyMedium,
+                color = MaterialTheme.colorScheme.onSurface
+            )
+        }
+
+        // Special Purpose Fonts
+        Spacer(Modifier.height(16.dp))
+        Text("特殊用途字体", style = MaterialTheme.typography.titleMedium)
+
+        // Literary Font
+        TypographyItem(
+            name = "文学字体 (Literary)",
+            exampleText = "人生若只如初见",
+            style = TextStyle(
+                fontFamily = LiteraryFontFamily,
+                fontWeight = FontWeight.SemiBold,
+                fontSize = 18.sp,
+                lineHeight = 28.sp,
+                letterSpacing = 0.8.sp
+            ),
+            color = MaterialTheme.colorScheme.tertiary
+        )
+
+        // Other extended styles
+        TypographyItem(
+            "数字字体 (Number Large)",
+            "1,234,567",
+            TangyuanTypography.numberLarge,
+            MaterialTheme.colorScheme.primary
+        )
+        TypographyItem(
+            "代码字体 (Code)",
+            "val name = \"Tangyuan\"",
+            TangyuanTypography.code,
+            MaterialTheme.colorScheme.onSurfaceVariant
+        )
+    }
+}
+
+@Composable
+private fun TypographyItem(
+    name: String,
+    exampleText: String,
+    style: TextStyle,
+    color: Color = MaterialTheme.colorScheme.onSurface
+) {
+    Column(modifier = Modifier.padding(bottom = 8.dp)) {
+        Text(
+            text = name,
+            style = MaterialTheme.typography.labelLarge,
+            color = MaterialTheme.colorScheme.onSurfaceVariant
+        )
+        Text(
+            text = exampleText,
+            style = style.copy(color = color),
+            maxLines = 1
+        )
+        Text(
+            text = "Font: ${getFontFamilyName(style.fontFamily)} | Size: ${style.fontSize.value.toInt()}sp | Weight: ${style.fontWeight?.weight}",
+            style = MaterialTheme.typography.labelSmall,
+            color = MaterialTheme.colorScheme.onSurfaceVariant
+        )
+    }
+}
+
+@Composable
+private fun FontWeightShowcase() {
+    val weights = listOf(
+        FontWeight.Normal to "Normal (400)",
+        FontWeight.Medium to "Medium (500)",
+        FontWeight.SemiBold to "SemiBold (600)",
+        FontWeight.Bold to "Bold (700)"
+    )
+    Column(verticalArrangement = Arrangement.spacedBy(8.dp)) {
+        weights.forEach { (weight, name) ->
+            Row(verticalAlignment = Alignment.CenterVertically) {
+                Text(
+                    text = name,
+                    style = MaterialTheme.typography.labelMedium,
+                    modifier = Modifier.width(120.dp)
+                )
+                Text(
+                    text = "线粒体 XianlitiCN",
+                    style = MaterialTheme.typography.bodyLarge.copy(fontWeight = weight)
+                )
+            }
+        }
+    }
+}
+
+private fun getFontFamilyName(fontFamily: FontFamily?): String {
+    return when (fontFamily) {
+        TangyuanGeneralFontFamily -> "General (混排)"
+        EnglishFontFamily -> "Quicksand"
+        ChineseFontFamily -> "Noto Sans SC"
+        LiteraryFontFamily -> "Noto Serif SC (文学)"
+        FontFamily.Monospace -> "Monospace"
+        else -> "Default"
+    }
+}
+
+/**
+ * 形状系统预览
+ */
+@Composable
+private fun ShapeSystemPreview() {
+    Column(verticalArrangement = Arrangement.spacedBy(16.dp)) {
+        Text("Material Shapes", style = MaterialTheme.typography.titleMedium)
+        Row(
+            modifier = Modifier.fillMaxWidth(),
+            horizontalArrangement = Arrangement.SpaceAround,
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            ShapeItem("Extra Small (4dp)", MaterialTheme.shapes.extraSmall)
+            ShapeItem("Small (8dp)", MaterialTheme.shapes.small)
+            ShapeItem("Medium (12dp)", MaterialTheme.shapes.medium)
+        }
+        Spacer(Modifier.height(8.dp))
+        Row(
+            modifier = Modifier.fillMaxWidth(),
+            horizontalArrangement = Arrangement.SpaceAround,
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            ShapeItem("Large (16dp)", MaterialTheme.shapes.large, Modifier.size(80.dp, 60.dp))
+            ShapeItem(
+                "Extra Large (28dp)",
+                MaterialTheme.shapes.extraLarge,
+                Modifier.size(80.dp, 60.dp)
+            )
+        }
+
+        Spacer(Modifier.height(16.dp))
+        Text("扩展形状 (TangyuanShapes)", style = MaterialTheme.typography.titleMedium)
+        Row(
+            modifier = Modifier.fillMaxWidth(),
+            horizontalArrangement = Arrangement.SpaceAround,
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            ShapeItem("Circle", TangyuanShapes.Circle)
+            ShapeItem("Top Rounded", TangyuanShapes.TopRounded)
+            ShapeItem("Cultural Card", TangyuanShapes.CulturalCard)
+        }
+    }
+}
+
+@Composable
+private fun ShapeItem(name: String, shape: Shape, modifier: Modifier = Modifier.size(72.dp)) {
+    Column(horizontalAlignment = Alignment.CenterHorizontally) {
+        Box(
+            modifier = modifier
+                .background(MaterialTheme.colorScheme.primaryContainer, shape)
+                .border(1.dp, MaterialTheme.colorScheme.primary, shape)
+        )
+        Text(
+            text = name,
+            style = MaterialTheme.typography.labelSmall,
+            modifier = Modifier.padding(top = 4.dp)
+        )
+    }
+}
+
+// ====================================
+// 预览
+// ====================================
+@Preview(showBackground = true, name = "Design System - Light Theme")
+@Composable
+fun DesignSystemScreenLightPreview() {
+    TangyuanTheme(darkTheme = false) {
+        Surface {
+            DesignSystemScreen()
+        }
+    }
+}
+
+@Preview(showBackground = true, name = "Design System - Dark Theme")
+@Composable
+fun DesignSystemScreenDarkPreview() {
+    TangyuanTheme(darkTheme = true) {
+        Surface {
+            DesignSystemScreen()
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/qingshuige/tangyuan/ui/screens/PostDetailScreen.kt b/app/src/main/java/com/qingshuige/tangyuan/ui/screens/PostDetailScreen.kt
index f5e8f8e..4cc9e72 100644
--- a/app/src/main/java/com/qingshuige/tangyuan/ui/screens/PostDetailScreen.kt
+++ b/app/src/main/java/com/qingshuige/tangyuan/ui/screens/PostDetailScreen.kt
@@ -137,8 +137,9 @@ private fun PostDetailTopBar(
     TopAppBar(
         title = {
             Text(
-                text = "详情",
-                fontFamily = LiteraryFontFamily,
+                text = "帖子详情",
+                fontFamily = TangyuanGeneralFontFamily,
+                style = MaterialTheme.typography.titleMedium,
                 color = MaterialTheme.colorScheme.onSurface
             )
         },
@@ -309,6 +310,7 @@ private fun PostDetailCard(
                     lineHeight = 28.sp
                 ),
                 fontFamily = LiteraryFontFamily,
+                fontWeight = FontWeight.SemiBold,
                 color = MaterialTheme.colorScheme.onSurface
             )
             
diff --git a/app/src/main/java/com/qingshuige/tangyuan/ui/screens/UserDetailScreen.kt b/app/src/main/java/com/qingshuige/tangyuan/ui/screens/UserDetailScreen.kt
index 8eeb6cb..d58707f 100644
--- a/app/src/main/java/com/qingshuige/tangyuan/ui/screens/UserDetailScreen.kt
+++ b/app/src/main/java/com/qingshuige/tangyuan/ui/screens/UserDetailScreen.kt
@@ -44,6 +44,7 @@ fun UserDetailScreen(
     userId: Int,
     onBackClick: () -> Unit,
     onPostClick: (Int) -> Unit = {},
+    onImageClick: (postId: Int, imageIndex: Int) -> Unit = { _, _ -> },
     onFollowClick: () -> Unit = {},
     sharedTransitionScope: SharedTransitionScope? = null,
     animatedContentScope: AnimatedContentScope? = null,
@@ -153,7 +154,7 @@ fun UserDetailScreen(
                                 onBookmarkClick = { /* TODO: 实现收藏 */ },
                                 onMoreClick = { /* TODO: 实现更多操作 */ },
                                 onImageClick = { postId, imageIndex ->
-                                    // TODO: 实现图片点击
+                                    onImageClick(postId, imageIndex)
                                 },
                                 sharedTransitionScope = sharedTransitionScope,
                                 animatedContentScope = animatedContentScope,
@@ -189,14 +190,14 @@ private fun UserDetailTopBar(
             if (isLoading) {
                 Text(
                     text = "用户详情",
-                    style = MaterialTheme.typography.titleLarge,
+                    style = MaterialTheme.typography.titleMedium,
                     fontFamily = TangyuanGeneralFontFamily,
                     color = MaterialTheme.colorScheme.onSurface
                 )
             } else {
                 Text(
                     text = if (userName.isNotBlank()) "用户详情 · $userName" else "用户详情",
-                    style = MaterialTheme.typography.titleLarge,
+                    style = MaterialTheme.typography.titleMedium,
                     fontFamily = TangyuanGeneralFontFamily,
                     color = MaterialTheme.colorScheme.onSurface,
                     maxLines = 1,
diff --git a/app/src/main/java/com/qingshuige/tangyuan/ui/screens/UserScreen.kt b/app/src/main/java/com/qingshuige/tangyuan/ui/screens/UserScreen.kt
index 3a07049..6ce385d 100644
--- a/app/src/main/java/com/qingshuige/tangyuan/ui/screens/UserScreen.kt
+++ b/app/src/main/java/com/qingshuige/tangyuan/ui/screens/UserScreen.kt
@@ -26,6 +26,7 @@ import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.DesignServices
 import androidx.compose.material.icons.filled.Edit
 import androidx.compose.material.icons.filled.Info
 import androidx.compose.material.icons.filled.KeyboardArrowRight
@@ -76,6 +77,7 @@ fun UserScreen(
     onPostManagement: () -> Unit = {},
     onSettings: () -> Unit = {},
     onAbout: () -> Unit = {},
+    onDesignSystem: () -> Unit = {},
     userViewModel: UserViewModel = hiltViewModel()
 ) {
     val loginState by userViewModel.loginState.collectAsState()
@@ -104,11 +106,18 @@ fun UserScreen(
             MenuSection(
                 onPostManagement = onPostManagement,
                 onSettings = onSettings,
-                onAbout = onAbout
+                onAbout = onAbout,
+                onDesignSystem = onDesignSystem
             )
         } else {
             // 未登录状态
             NotLoggedInContent()
+            Spacer(modifier = Modifier.height(24.dp))
+            MenuSectionNotLogin(
+                onSettings = onSettings,
+                onAbout = onAbout,
+                onDesignSystem = onDesignSystem
+            )
         }
     }
 }
@@ -396,6 +405,7 @@ private fun VerticalDivider() {
 @Composable
 private fun MenuSection(
     onPostManagement: () -> Unit,
+    onDesignSystem: () -> Unit,
     onSettings: () -> Unit,
     onAbout: () -> Unit
 ) {
@@ -438,6 +448,76 @@ private fun MenuSection(
                 color = MaterialTheme.colorScheme.outline.copy(alpha = 0.2f)
             )
 
+            MenuItem(
+                icon = Icons.Default.DesignServices,
+                title = "关于糖原设计系统",
+                subtitle = "了解 App 的设计系统与排版规范",
+                onClick = onDesignSystem,
+                showDivider = false
+            )
+
+            HorizontalDivider(
+                modifier = Modifier.padding(horizontal = 16.dp),
+                color = MaterialTheme.colorScheme.outline.copy(alpha = 0.2f)
+            )
+
+            MenuItem(
+                icon = Icons.Default.Info,
+                title = "关于",
+                subtitle = "版本信息和帮助",
+                onClick = onAbout,
+                showDivider = false
+            )
+        }
+    }
+}
+
+@Composable
+private fun MenuSectionNotLogin(
+    onSettings: () -> Unit,
+    onDesignSystem: () -> Unit,
+    onAbout: () -> Unit
+) {
+    Text(
+        text = "功能菜单",
+        style = MaterialTheme.typography.titleMedium,
+        fontFamily = TangyuanGeneralFontFamily,
+        fontWeight = FontWeight.Medium,
+        color = MaterialTheme.colorScheme.onSurface,
+        modifier = Modifier.padding(horizontal = 8.dp, vertical = 8.dp)
+    )
+
+    Box(
+        modifier = Modifier.fillMaxWidth(),
+    ) {
+        Column(
+            modifier = Modifier.fillMaxWidth()
+        ) {
+            MenuItem(
+                icon = Icons.Default.Settings,
+                title = "设置",
+                subtitle = "个性化设置和隐私选项",
+                onClick = onSettings
+            )
+
+            HorizontalDivider(
+                modifier = Modifier.padding(horizontal = 16.dp),
+                color = MaterialTheme.colorScheme.outline.copy(alpha = 0.2f)
+            )
+
+            MenuItem(
+                icon = Icons.Default.DesignServices,
+                title = "关于糖原设计系统",
+                subtitle = "了解 App 的设计系统与排版规范",
+                onClick = onDesignSystem,
+                showDivider = false
+            )
+
+            HorizontalDivider(
+                modifier = Modifier.padding(horizontal = 16.dp),
+                color = MaterialTheme.colorScheme.outline.copy(alpha = 0.2f)
+            )
+
             MenuItem(
                 icon = Icons.Default.Info,
                 title = "关于",