diff --git a/AIStudyApp/AIStudyApp/Features/Library/LibrarySubpages.swift b/AIStudyApp/AIStudyApp/Features/Library/LibrarySubpages.swift
index d8026a6..0e307b2 100644
--- a/AIStudyApp/AIStudyApp/Features/Library/LibrarySubpages.swift
+++ b/AIStudyApp/AIStudyApp/Features/Library/LibrarySubpages.swift
@@ -260,38 +260,47 @@ struct LibraryDetailPage: View {
                                 Text("暂无资料来源").font(.system(size: 14)).foregroundColor(Color.zxF03).padding(.top, 40)
                             } else {
                                 ForEach(sources) { src in
-                                    HStack(spacing: 12) {
-                                        Image(systemName: src.type == "file" ? "doc" : "link")
-                                            .font(.system(size: 18)).foregroundColor(Color.zxPurple)
-                                            .frame(width: 36, height: 36)
-                                        VStack(alignment: .leading, spacing: 2) {
-                                            Text(src.title ?? src.originalFilename ?? "未命名")
-                                                .font(.system(size: 15, weight: .medium)).foregroundColor(Color.zxF0).lineLimit(1)
-                                            if let len = src.textLength, len > 0 {
-                                                Text("\(len) 字")
-                                                    .font(.system(size: 13)).foregroundColor(Color.zxF04)
+                                    NavigationLink(value: Route.materialDetail(
+                                        knowledgeBaseId: knowledgeBaseId,
+                                        fileName: src.originalFilename ?? src.title ?? "未命名",
+                                        fileType: materialTypeFromMime(src.mimeType),
+                                        fileSize: 0,
+                                        filePath: "",
+                                        uploadDate: src.createdAt
+                                    )) {
+                                        HStack(spacing: 12) {
+                                            Image(systemName: src.type == "file" ? "doc" : "link")
+                                                .font(.system(size: 18)).foregroundColor(Color.zxPurple)
+                                                .frame(width: 36, height: 36)
+                                            VStack(alignment: .leading, spacing: 2) {
+                                                Text(src.originalFilename ?? src.title ?? "未命名")
+                                                    .font(.system(size: 15, weight: .medium)).foregroundColor(Color.zxF0).lineLimit(1)
+                                                if let len = src.textLength, len > 0 {
+                                                    Text("\(len) 字")
+                                                        .font(.system(size: 13)).foregroundColor(Color.zxF04)
+                                                }
+                                                // Reading status badge
+                                                if let status = sourceReadingStatus[src.id], status != "not_started" {
+                                                    Text(status == "read" ? "已读" : "阅读中")
+                                                        .font(.system(size: 10, weight: .medium))
+                                                        .foregroundColor(status == "read" ? Color.green : Color.zxPurple)
+                                                        .padding(.horizontal, 6).padding(.vertical, 2)
+                                                        .background((status == "read" ? Color.green : Color.zxPurple).opacity(0.1))
+                                                        .clipShape(Capsule())
+                                                }
                                             }
-                                            // Reading status badge
-                                            if let status = sourceReadingStatus[src.id], status != "not_started" {
-                                                Text(status == "read" ? "已读" : "阅读中")
-                                                    .font(.system(size: 10, weight: .medium))
-                                                    .foregroundColor(status == "read" ? Color.green : Color.zxPurple)
-                                                    .padding(.horizontal, 6).padding(.vertical, 2)
-                                                    .background((status == "read" ? Color.green : Color.zxPurple).opacity(0.1))
-                                                    .clipShape(Capsule())
+                                            Spacer()
+                                            Button {
+                                                Task { await deleteSource(src) }
+                                            } label: {
+                                                Image("icon-trash").resizable().scaledToFit().frame(width: 16, height: 16).foregroundColor(Color.zxF03)
                                             }
                                         }
-                                        Spacer()
-                                        Button {
-                                            Task { await deleteSource(src) }
-                                        } label: {
-                                            Image("icon-trash").resizable().scaledToFit().frame(width: 16, height: 16).foregroundColor(Color.zxF03)
+                                        .padding(.vertical, 14)
+                                        .overlay(alignment: .bottom) {
+                                            Color.zxHairline.frame(height: 0.5)
                                         }
                                     }
-                                    .padding(.vertical, 14)
-                                    .overlay(alignment: .bottom) {
-                                        Color.zxHairline.frame(height: 0.5)
-                                    }
                                 }
                             }
                         }
@@ -1065,6 +1074,10 @@ struct KnowledgeDetailPage: View {
         _vm = StateObject(wrappedValue: KnowledgeDetailViewModel(item: item))
     }
 
+    @State private var navigateToReader = false
+    @State private var readerPath: String = ""
+    @State private var readerType: MaterialType = .text
+
     var body: some View {
         Group {
             switch vm.loadState {
@@ -1477,6 +1490,18 @@ struct EditKnowledgePage: View {
 
 // MARK: - Helpers
 
+private func materialTypeFromMime(_ mime: String?) -> MaterialType {
+    guard let m = mime?.lowercased() else { return .markdown }
+    if m.contains("pdf") { return .pdf }
+    if m.contains("epub") { return .epub }
+    if m.contains("word") || m.contains("docx") || m.contains("doc") { return .word }
+    if m.contains("excel") || m.contains("xlsx") { return .excel }
+    if m.contains("powerpoint") || m.contains("pptx") { return .powerPoint }
+    if m.contains("image") { return .image }
+    if m.contains("text/plain") { return .text }
+    return .markdown
+}
+
 private func writeTempFile(content: String, itemId: String) throws -> String {
     let dir = FileManager.default.temporaryDirectory
     let url = dir.appendingPathComponent("kd_text_\(itemId).md")