diff --git a/AIStudyApp/AIStudyApp/Features/Library/LibrarySubpages.swift b/AIStudyApp/AIStudyApp/Features/Library/LibrarySubpages.swift
index c6d5520..4e325b0 100644
--- a/AIStudyApp/AIStudyApp/Features/Library/LibrarySubpages.swift
+++ b/AIStudyApp/AIStudyApp/Features/Library/LibrarySubpages.swift
@@ -8,31 +8,42 @@ struct CreateLibraryPage: View {
     @State private var isCreating = false; @State private var isUploadingCover = false
     @State private var coverKey: String?; @State private var coverImage: UIImage?
     @State private var showCoverPicker = false; @State private var coverPhotoItem: PhotosPickerItem?
+    @State private var showCoverSheet = false
     var body: some View {
         ZStack { Color.zxBg0.ignoresSafeArea(); VStack(spacing: 0) {
             ScrollView { VStack(spacing: 20) {
-                // 封面
-                VStack(alignment: .leading, spacing: 8) {
-                    Text("封面图（可选，正方形）").font(.system(size: 12, weight: .semibold)).foregroundColor(Color.zxF035)
-                    Button { showCoverPicker = true } label: {
-                        ZStack {
-                            RoundedRectangle(cornerRadius: 14).fill(Color.zxFill004)
-                                .overlay(RoundedRectangle(cornerRadius: 14).stroke(style: StrokeStyle(lineWidth: 1.5, dash: [6, 4])).foregroundColor(Color.zxBorder01))
-                                .frame(width: 160, height: 160)
-                            if let img = coverImage {
-                                Image(uiImage: img).resizable().scaledToFill().frame(width: 160, height: 160).clipShape(RoundedRectangle(cornerRadius: 14))
-                            } else {
-                                VStack(spacing: 8) {
-                                    Image(systemName: "photo.badge.plus").font(.system(size: 28)).foregroundColor(Color.zxF04)
-                                    Text("点击上传").font(.system(size: 13)).foregroundColor(Color.zxF04)
-                                }
+                // 封面卡片
+                Button { showCoverSheet = true } label: {
+                    ZStack {
+                        RoundedRectangle(cornerRadius: 14).fill(Color.zxFill004)
+                            .overlay(RoundedRectangle(cornerRadius: 14).stroke(Color.zxBorder008, lineWidth: 1))
+                        if let img = coverImage {
+                            Image(uiImage: img).resizable().scaledToFill().frame(height: 140).clipShape(RoundedRectangle(cornerRadius: 14))
+                        } else {
+                            VStack(spacing: 8) {
+                                Image(systemName: "photo.on.rectangle.angled").font(.system(size: 28)).foregroundColor(Color.zxF04)
+                                Text("添加封面图").font(.system(size: 13, weight: .medium)).foregroundColor(Color.zxF04)
+                                Text("从相册选择").font(.system(size: 11)).foregroundColor(Color.zxF03)
                             }
-                            if isUploadingCover { RoundedRectangle(cornerRadius: 14).fill(Color.black.opacity(0.4)).frame(width: 160, height: 160); ProgressView().tint(.white) }
                         }
-                    }.disabled(isUploadingCover)
+                        if isUploadingCover { RoundedRectangle(cornerRadius: 14).fill(Color.black.opacity(0.4)); ProgressView().tint(.white) }
+                    }
+                    .frame(height: 140)
+                }
+                .disabled(isUploadingCover)
+                .confirmationDialog("封面图", isPresented: $showCoverSheet) {
+                    Button("从相册选择") { showCoverPicker = true }
+                    Button("取消", role: .cancel) {}
+                }
+
+                VStack(alignment: .leading, spacing: 8) {
+                    HStack(spacing: 2) { Text("知识库名称").font(.system(size: 12, weight: .semibold)); Text("*").foregroundColor(.red) }.foregroundColor(Color.zxF035)
+                    TextField("例如：机器学习", text: $name).font(.system(size: 15)).tint(Color.zxPurple).padding(.horizontal, 16).frame(height: 52).background(Color.zxFill004).clipShape(RoundedRectangle(cornerRadius: 14)).overlay(RoundedRectangle(cornerRadius: 14).stroke(Color.zxBorder008, lineWidth: 1))
+                }
+                VStack(alignment: .leading, spacing: 8) {
+                    HStack(spacing: 2) { Text("描述").font(.system(size: 12, weight: .semibold)); Text("*").foregroundColor(.red) }.foregroundColor(Color.zxF035)
+                    TextEditor(text: $desc).frame(minHeight: 80).scrollContentBackground(.hidden).padding(8).background(Color.zxFill004).clipShape(RoundedRectangle(cornerRadius: 14)).overlay(RoundedRectangle(cornerRadius: 14).stroke(Color.zxBorder008, lineWidth: 1))
                 }
-                VStack(alignment: .leading, spacing: 8) { Text("知识库名称").font(.system(size: 12, weight: .semibold)).foregroundColor(Color.zxF035); TextField("例如：机器学习", text: $name).font(.system(size: 15)).tint(Color.zxPurple).padding(.horizontal, 16).frame(height: 52).background(Color.zxFill004).clipShape(RoundedRectangle(cornerRadius: 14)).overlay(RoundedRectangle(cornerRadius: 14).stroke(Color.zxBorder008, lineWidth: 1)) }
-                VStack(alignment: .leading, spacing: 8) { Text("描述").font(.system(size: 12, weight: .semibold)).foregroundColor(Color.zxF035); TextEditor(text: $desc).frame(minHeight: 80).scrollContentBackground(.hidden).padding(8).background(Color.zxFill004).clipShape(RoundedRectangle(cornerRadius: 14)).overlay(RoundedRectangle(cornerRadius: 14).stroke(Color.zxBorder008, lineWidth: 1)) }
                 Button {
                     guard !name.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty,
                           !desc.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty else { return }