diff --git a/App/Compatibility.swift b/App/Compatibility.swift
index 5020720..40a038f 100644
--- a/App/Compatibility.swift
+++ b/App/Compatibility.swift
@@ -340,6 +340,22 @@ extension View {
         }
     }
 
+    @ViewBuilder
+    func readingNavigationBarBackground() -> some View {
+        if #available(iOS 16.0, *), !ReadingCompatibility.usesLegacyUI {
+            toolbarBackground(ReadingTheme.canvas, for: .navigationBar)
+                .toolbarBackground(.visible, for: .navigationBar)
+        } else {
+            background(ReadingUIKitConfiguration { controller in
+                let appearance = UINavigationBarAppearance()
+                appearance.configureWithOpaqueBackground()
+                appearance.backgroundColor = UIColor(ReadingTheme.canvas)
+                controller.navigationController?.navigationBar.standardAppearance = appearance
+                controller.navigationController?.navigationBar.scrollEdgeAppearance = appearance
+            })
+        }
+    }
+
     @ViewBuilder
     func readingTabBarBackground() -> some View {
         if #available(iOS 16.0, *), !ReadingCompatibility.usesLegacyUI {
diff --git a/App/DesignSystem.swift b/App/DesignSystem.swift
index b259ee6..445924c 100644
--- a/App/DesignSystem.swift
+++ b/App/DesignSystem.swift
@@ -77,6 +77,29 @@ private struct ReadingUnavailableLabelStyle: LabelStyle {
 }
 
 extension View {
+    /// Keep filled controls dark in both appearances, independently of icon tint.
+    func readingProminentButtonStyle() -> some View {
+        buttonStyle(.borderedProminent)
+            .tint(ReadingTheme.accentFill)
+            .foregroundStyle(ReadingTheme.onAccent)
+    }
+
+    func readingSecondaryButtonStyle() -> some View {
+        buttonStyle(.bordered)
+            .tint(ReadingTheme.accentFill)
+            .foregroundStyle(ReadingTheme.accent)
+    }
+
+    @ViewBuilder
+    func readingChoiceButtonStyle(isSelected: Bool) -> some View {
+        if isSelected {
+            readingProminentButtonStyle()
+                .accessibilityAddTraits(.isSelected)
+        } else {
+            readingSecondaryButtonStyle()
+        }
+    }
+
     func readingSearchable(text: Binding<String>, isPresented: Binding<Bool>, prompt: String) -> some View {
         modifier(ReadingSearchModifier(text: text, isPresented: isPresented, prompt: prompt))
     }
@@ -144,7 +167,11 @@ private struct ReadingSearchModifier: ViewModifier {
 }
 
 enum ReadingTheme {
-    static let accent = adaptive(0x171717, dark: 0xF2F2F2)
+    static let accent = adaptive(0x171717, dark: 0xDADAE0)
+    static let accentFill = adaptive(0x171717, dark: 0x414148)
+    static let emphasisSurface = adaptive(0x171717, dark: 0x29292E)
+    static let selectionBorder = adaptive(0x171717, dark: 0x777780)
+    static let toggleTint = Color(uiColor: .systemGreen)
     static let accentSoft = adaptive(0xEEEEEF, dark: 0x29292C)
     static let coral = Color(red: 0.76, green: 0.48, blue: 0.27)
     static let paper = Color(red: 0.965, green: 0.945, blue: 0.895)
@@ -153,7 +180,7 @@ enum ReadingTheme {
     static let groupedCanvas = adaptive(0xF3F3F4, dark: 0x1C1C1F)
     static let surface = adaptive(0xFFFFFF, dark: 0x232326)
     static let separator = adaptive(0xE6E6E8, dark: 0x363639)
-    static let onAccent = adaptive(0xFFFFFF, dark: 0x171717)
+    static let onAccent = Color.white
 
     private static func adaptive(_ light: UInt32, dark: UInt32) -> Color {
         Color(uiColor: UIColor { traits in
diff --git a/App/Features/Activity/ReadingStatisticsView.swift b/App/Features/Activity/ReadingStatisticsView.swift
index 2b15c66..78a0f62 100644
--- a/App/Features/Activity/ReadingStatisticsView.swift
+++ b/App/Features/Activity/ReadingStatisticsView.swift
@@ -47,7 +47,9 @@ struct ReadingStatisticsView: View {
         }
         .frame(maxWidth: .infinity, alignment: .leading)
         .padding(24)
-        .background(ReadingTheme.accent, in: RoundedRectangle(cornerRadius: 20))
+        .background(ReadingTheme.emphasisSurface, in: RoundedRectangle(cornerRadius: 20))
+        .accessibilityElement(children: .contain)
+        .accessibilityIdentifier("statistics.todayCard")
     }
 
     private var overviewGrid: some View {
diff --git a/App/Features/Books/BookDetailView.swift b/App/Features/Books/BookDetailView.swift
index 79d2d7d..f7218ac 100644
--- a/App/Features/Books/BookDetailView.swift
+++ b/App/Features/Books/BookDetailView.swift
@@ -194,7 +194,7 @@ struct BookDetailView: View {
                 .font(.body.weight(.medium))
                 .frame(maxWidth: .infinity, minHeight: 28)
         }
-        .buttonStyle(.borderedProminent)
+        .readingProminentButtonStyle()
         .disabled(model.chapters.isEmpty)
         Button {
             if library.contains(model.book) {
@@ -210,7 +210,7 @@ struct BookDetailView: View {
             .font(.subheadline)
             .frame(maxWidth: dynamicTypeSize.isAccessibilitySize ? .infinity : nil, minHeight: 28)
         }
-        .buttonStyle(.bordered)
+        .readingSecondaryButtonStyle()
     }
 
     @ViewBuilder
diff --git a/App/Features/Explore/ExploreView.swift b/App/Features/Explore/ExploreView.swift
index 645d79d..d17721c 100644
--- a/App/Features/Explore/ExploreView.swift
+++ b/App/Features/Explore/ExploreView.swift
@@ -155,7 +155,7 @@ struct ExploreView: View {
                             Text("添加带有发现分类的书源，即可在这里浏览书籍。")
                         } actions: {
                             NavigationLink("管理书源") { SourceManagementView() }
-                                .buttonStyle(.borderedProminent)
+                                .readingProminentButtonStyle()
                         }
                     } else {
                         LazyVStack(spacing: 0) {
diff --git a/App/Features/RSS/RSSViews.swift b/App/Features/RSS/RSSViews.swift
index 4a86e31..dd5fa75 100644
--- a/App/Features/RSS/RSSViews.swift
+++ b/App/Features/RSS/RSSViews.swift
@@ -142,7 +142,7 @@ private struct RSSArticleListView: View {
                 ScrollView(.horizontal, showsIndicators: false) {
                     HStack { ForEach(Array(sorts.enumerated()), id: \.element.id) { index, sort in
                         Button(sort.name.isEmpty ? "默认" : sort.name) { selectedSort = index; Task { await refresh() } }
-                            .buttonStyle(.bordered).tint(selectedSort == index ? ReadingTheme.accent : .secondary)
+                            .readingChoiceButtonStyle(isSelected: selectedSort == index)
                     }}.padding(.horizontal)
                 }.padding(.vertical, 6)
             }
@@ -435,7 +435,7 @@ private struct RSSDownloadView: View {
                 Image(systemName: "doc.badge.arrow.up").font(.system(size: 48)).foregroundStyle(ReadingTheme.accent)
                 Text(fileName).font(.headline)
                 Text(ByteCountFormatter.string(fromByteCount: Int64(data.count), countStyle: .file)).foregroundStyle(.secondary)
-                Button("选择保存位置", systemImage: "folder") { showsExporter = true }.buttonStyle(.borderedProminent)
+                Button("选择保存位置", systemImage: "folder") { showsExporter = true }.readingProminentButtonStyle()
             }
         }.padding().navigationTitle("文件下载").toolbar { ToolbarItem(placement: .cancellationAction) { Button("关闭") { dismiss() } } }
             .task(id: url) { await download() }
@@ -464,7 +464,7 @@ private struct RSSBinaryDocument: FileDocument {
     func fileWrapper(configuration: WriteConfiguration) throws -> FileWrapper { .init(regularFileWithContents: data) }
 }
 
-private struct RSSPhotoView: View {
+struct RSSPhotoView: View {
     @Environment(\.dismiss) private var dismiss
     let value: String
     let source: RssSource
@@ -480,9 +480,13 @@ private struct RSSPhotoView: View {
                         else if loading { ProgressView() }
                         else { ReadingUnavailableView("图片加载失败", systemImage: "photo.badge.exclamationmark") }
                     }.frame(minWidth: proxy.size.width, minHeight: proxy.size.height)
-                }.background(.black)
+                }
+                .background(.black)
+                .environment(\.colorScheme, .dark)
+                .tint(.white)
             }
             .navigationTitle(source.sourceName).navigationBarTitleDisplayMode(.inline)
+            .readingNavigationBarBackground()
             .toolbar {
                 ToolbarItem(placement: .primaryAction) { Button("保存到照片", systemImage: "square.and.arrow.down") { save() }.disabled(image == nil) }
                 ToolbarItem(placement: .confirmationAction) { Button("完成") { dismiss() } }
@@ -490,6 +494,7 @@ private struct RSSPhotoView: View {
             .task(id: value) { await load() }
             .alert("图片", isPresented: Binding(get: { message != nil }, set: { if !$0 { message = nil } })) { Button("好") { message = nil } } message: { Text(message ?? "") }
         }
+        .readingTabBarHidden()
     }
 
     private func load() async {
diff --git a/App/Features/RSS/RSSWebReaderView.swift b/App/Features/RSS/RSSWebReaderView.swift
index 418bbf3..2c0bf5f 100644
--- a/App/Features/RSS/RSSWebReaderView.swift
+++ b/App/Features/RSS/RSSWebReaderView.swift
@@ -41,6 +41,9 @@ struct RSSWebReaderView: UIViewRepresentable {
             controller.addUserScript(.init(source: inject, injectionTime: .atDocumentEnd, forMainFrameOnly: false))
         }
         let webView = WKWebView(frame: .zero, configuration: configuration)
+        webView.isOpaque = false
+        webView.backgroundColor = UIColor(ReadingTheme.canvas)
+        webView.scrollView.backgroundColor = UIColor(ReadingTheme.canvas)
         webView.navigationDelegate = context.coordinator
         webView.uiDelegate = context.coordinator
         webView.allowsBackForwardNavigationGestures = true
diff --git a/App/Features/Reader/ReaderView.swift b/App/Features/Reader/ReaderView.swift
index 5caef36..c55ad9f 100644
--- a/App/Features/Reader/ReaderView.swift
+++ b/App/Features/Reader/ReaderView.swift
@@ -492,7 +492,7 @@ struct ReaderView: View {
                 .accessibilityIdentifier("reader.failureChangeSource")
             }
         }
-        .buttonStyle(.bordered)
+        .readingSecondaryButtonStyle()
     }
 
     private func openSourceSwitch() {
@@ -1118,7 +1118,7 @@ struct ReaderView: View {
                             Image(systemName: "textformat.size.smaller")
                                 .frame(width: 38, height: 32)
                         }
-                        .buttonStyle(.bordered)
+                        .readingSecondaryButtonStyle()
 
                         VStack(spacing: 2) {
                             Text("字号")
@@ -1135,7 +1135,7 @@ struct ReaderView: View {
                             Image(systemName: "textformat.size.larger")
                                 .frame(width: 38, height: 32)
                         }
-                        .buttonStyle(.bordered)
+                        .readingSecondaryButtonStyle()
                     }
 
                     HStack(spacing: 8) {
@@ -1285,14 +1285,19 @@ struct ReaderView: View {
                                         Text(choice.title)
                                             .font(.caption2)
                                     }
-                                    .foregroundStyle(pageAnimation == choice.value ? Color.white : Color.primary)
+                                    .foregroundStyle(pageAnimation == choice.value ? ReadingTheme.onAccent : Color.primary)
                                     .frame(width: 58, height: 54)
                                     .background(
-                                        pageAnimation == choice.value ? ReadingTheme.accent : Color.secondary.opacity(0.1),
+                                        pageAnimation == choice.value ? ReadingTheme.accentFill : Color.secondary.opacity(0.1),
                                         in: RoundedRectangle(cornerRadius: 12, style: .continuous)
                                     )
+                                    .overlay {
+                                        RoundedRectangle(cornerRadius: 12, style: .continuous)
+                                            .strokeBorder(pageAnimation == choice.value ? ReadingTheme.selectionBorder : .clear, lineWidth: 1)
+                                    }
                                 }
                                 .buttonStyle(.plain)
+                                .accessibilityAddTraits(pageAnimation == choice.value ? .isSelected : [])
                             }
                         }
                     }
@@ -1392,12 +1397,16 @@ struct ReaderView: View {
         Button(action: action) {
             Text(title)
                 .font(.caption.weight(.medium))
-                .foregroundStyle(selected ? Color.white : Color.primary)
+                .foregroundStyle(selected ? ReadingTheme.onAccent : Color.primary)
                 .padding(.horizontal, 12)
                 .padding(.vertical, 7)
-                .background(selected ? ReadingTheme.accent : Color.secondary.opacity(0.1), in: Capsule())
+                .background(selected ? ReadingTheme.accentFill : Color.secondary.opacity(0.1), in: Capsule())
+                .overlay {
+                    Capsule().strokeBorder(selected ? ReadingTheme.selectionBorder : .clear, lineWidth: 1)
+                }
         }
         .buttonStyle(.plain)
+        .accessibilityAddTraits(selected ? .isSelected : [])
     }
 
     private func valueSlider(
diff --git a/App/Features/Rules/Editor/QRCodeImportView.swift b/App/Features/Rules/Editor/QRCodeImportView.swift
index 35e8d9e..3589760 100644
--- a/App/Features/Rules/Editor/QRCodeImportView.swift
+++ b/App/Features/Rules/Editor/QRCodeImportView.swift
@@ -39,7 +39,7 @@ struct QRCodeImportView: View {
                 } label: {
                     Label("从照片选择二维码", systemImage: "photo")
                         .frame(maxWidth: .infinity)
-                }.buttonStyle(.borderedProminent).disabled(isReading)
+                }.readingProminentButtonStyle().disabled(isReading)
                 Text("支持 HTTP(S) 链接、Legado 导入深链和 JSON 内容。识别后进入导入流程。")
                     .font(.footnote).foregroundStyle(.secondary)
                 if values.count > 1 {
diff --git a/App/Features/Rules/Editor/SyntaxCodeEditor.swift b/App/Features/Rules/Editor/SyntaxCodeEditor.swift
index 913a07b..fbd8195 100644
--- a/App/Features/Rules/Editor/SyntaxCodeEditor.swift
+++ b/App/Features/Rules/Editor/SyntaxCodeEditor.swift
@@ -3,6 +3,26 @@ import UIKit
 
 struct SyntaxCodeEditor: UIViewRepresentable {
     enum Language { case json, rule, javascript, regex }
+
+    // Syntax colors are text, so they need more contrast than system icon tints.
+    private enum Palette {
+        static let keyword = adaptive(0x7A2BA6, dark: 0xD5A5F5)
+        static let number = adaptive(0x895900, dark: 0xE6B66A)
+        static let operation = adaptive(0xAD285F, dark: 0xF49AB8)
+        static let punctuation = adaptive(0x14666E, dark: 0x83CED8)
+        static let string = adaptive(0x2D6B39, dark: 0x8CCF96)
+        static let key = adaptive(0x1E5EB2, dark: 0x93BFFF)
+        static let comment = adaptive(0x64646B, dark: 0xA4A4AE)
+
+        private static func adaptive(_ light: UInt32, dark: UInt32) -> UIColor {
+            UIColor { traits in
+                let hex = traits.userInterfaceStyle == .dark ? dark : light
+                return UIColor(red: CGFloat((hex >> 16) & 0xff) / 255,
+                               green: CGFloat((hex >> 8) & 0xff) / 255,
+                               blue: CGFloat(hex & 0xff) / 255, alpha: 1)
+            }
+        }
+    }
     @Binding var text: String
     var language: Language = .rule
 
@@ -13,6 +33,7 @@ struct SyntaxCodeEditor: UIViewRepresentable {
         view.delegate = context.coordinator
         view.font = .monospacedSystemFont(ofSize: 14, weight: .regular)
         view.backgroundColor = .secondarySystemGroupedBackground
+        view.tintColor = UIColor(ReadingTheme.accent)
         view.textContainerInset = UIEdgeInsets(top: 14, left: 12, bottom: 20, right: 12)
         view.autocorrectionType = .no
         view.autocapitalizationType = .none
@@ -24,6 +45,7 @@ struct SyntaxCodeEditor: UIViewRepresentable {
         view.accessibilityIdentifier = "syntaxCodeEditor"
         if #available(iOS 16.0, *) { view.isFindInteractionEnabled = true }
         let bar = UIToolbar()
+        bar.tintColor = UIColor(ReadingTheme.accent)
         bar.sizeToFit()
         bar.items = [
             UIBarButtonItem(image: UIImage(systemName: "magnifyingglass"), primaryAction: UIAction(title: "", subtitle: nil) { [weak view, coordinator = context.coordinator] _ in
@@ -126,12 +148,12 @@ struct SyntaxCodeEditor: UIViewRepresentable {
             storage.addAttributes([.font: UIFont.monospacedSystemFont(ofSize: 14, weight: .regular), .foregroundColor: UIColor.label], range: all)
             if storage.length <= 500_000 {
                 let tokens: [(String, UIColor)] = [
-                    (#"\b(?:true|false|null|undefined|return|var|let|const|if|else|function|new|for|while|try|catch|throw|await|async)\b"#, .systemPurple),
-                    (#"\b\d+(?:\.\d+)?\b"#, .systemOrange),
-                    (#"@(?:css|xpath|json|js|put|get):?|\$\.|&&|\|\||%%|##|\{\{|\}\}"#, .systemPink),
-                    (#"[{}\[\]()]"#, .systemTeal),
-                    (#""(?:\\.|[^"\\])*"|'(?:\\.|[^'\\])*'|`(?:\\.|[^`\\])*`"#, .systemGreen),
-                    (#""(?:\\.|[^"\\])*"(?=\s*:)"#, .systemBlue),
+                    (#"\b(?:true|false|null|undefined|return|var|let|const|if|else|function|new|for|while|try|catch|throw|await|async)\b"#, Palette.keyword),
+                    (#"\b\d+(?:\.\d+)?\b"#, Palette.number),
+                    (#"@(?:css|xpath|json|js|put|get):?|\$\.|&&|\|\||%%|##|\{\{|\}\}"#, Palette.operation),
+                    (#"[{}\[\]()]"#, Palette.punctuation),
+                    (#""(?:\\.|[^"\\])*"|'(?:\\.|[^'\\])*'|`(?:\\.|[^`\\])*`"#, Palette.string),
+                    (#""(?:\\.|[^"\\])*"(?=\s*:)"#, Palette.key),
                 ]
                 for (pattern, color) in tokens {
                     guard let regex = try? NSRegularExpression(pattern: pattern) else { continue }
@@ -143,7 +165,7 @@ struct SyntaxCodeEditor: UIViewRepresentable {
                     for pattern in [#"[.*+?^$|]"#, #"\\[dDsSwWbB0-9]|\{[0-9,]+\}"#] {
                         let regex = try? NSRegularExpression(pattern: pattern)
                         regex?.enumerateMatches(in: view.text, range: all) { result, _, _ in
-                            if let result { storage.addAttribute(.foregroundColor, value: UIColor.systemPink, range: result.range) }
+                            if let result { storage.addAttribute(.foregroundColor, value: Palette.operation, range: result.range) }
                         }
                     }
                 }
@@ -151,7 +173,7 @@ struct SyntaxCodeEditor: UIViewRepresentable {
                     let pattern = #"(?m)^\s*//.*$|/\*[\s\S]*?\*/"#
                     let regex = try? NSRegularExpression(pattern: pattern)
                     regex?.enumerateMatches(in: view.text, range: all) { result, _, _ in
-                        if let result { storage.addAttribute(.foregroundColor, value: UIColor.secondaryLabel, range: result.range) }
+                        if let result { storage.addAttribute(.foregroundColor, value: Palette.comment, range: result.range) }
                     }
                 }
             }
diff --git a/App/Features/Sources/SourceDebugView.swift b/App/Features/Sources/SourceDebugView.swift
index 689120e..395e8c6 100644
--- a/App/Features/Sources/SourceDebugView.swift
+++ b/App/Features/Sources/SourceDebugView.swift
@@ -81,8 +81,7 @@ struct SourceDebugView: View {
                     Label(model.isRunning ? "正在调试…" : "运行完整链路", systemImage: "play.fill")
                         .font(.headline).frame(maxWidth: .infinity)
                 }
-                .buttonStyle(.borderedProminent)
-                .tint(ReadingTheme.accent)
+                .readingProminentButtonStyle()
                 .disabled(model.isRunning || model.keyword.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty)
             }
         }
diff --git a/App/Features/Sources/SourceEditorView.swift b/App/Features/Sources/SourceEditorView.swift
index 1a28f30..5defbdd 100644
--- a/App/Features/Sources/SourceEditorView.swift
+++ b/App/Features/Sources/SourceEditorView.swift
@@ -44,11 +44,10 @@ struct SourceEditorView: View {
                         HStack {
                             ForEach(BookSourceEditorSchema.sections) { section in
                                 Button(section.title) { sectionID = section.id }
-                                    .buttonStyle(.bordered)
-                                    .tint(sectionID == section.id ? ReadingTheme.accent : .secondary)
+                                    .readingChoiceButtonStyle(isSelected: sectionID == section.id)
                             }
-                            Button("选项") { sectionID = "options" }.buttonStyle(.bordered)
-                                .tint(sectionID == "options" ? ReadingTheme.accent : .secondary)
+                            Button("选项") { sectionID = "options" }
+                                .readingChoiceButtonStyle(isSelected: sectionID == "options")
                         }.padding(.horizontal)
                     }.padding(.vertical, 6)
                     Form {
diff --git a/App/Features/Sources/SourceLoginView.swift b/App/Features/Sources/SourceLoginView.swift
index 97ce444..a28ca93 100644
--- a/App/Features/Sources/SourceLoginView.swift
+++ b/App/Features/Sources/SourceLoginView.swift
@@ -1,5 +1,6 @@
 @preconcurrency import WebKit
 import SwiftUI
+import UIKit
 
 struct SourceLoginView: View {
     let source: BookSource
@@ -74,6 +75,9 @@ private struct SourceLoginWebView: UIViewRepresentable {
         let configuration = WKWebViewConfiguration()
         configuration.websiteDataStore = .default()
         let webView = WKWebView(frame: .zero, configuration: configuration)
+        webView.isOpaque = false
+        webView.backgroundColor = UIColor(ReadingTheme.canvas)
+        webView.scrollView.backgroundColor = UIColor(ReadingTheme.canvas)
         webView.navigationDelegate = context.coordinator
         context.coordinator.installExistingCookies(in: webView) { webView.load(request) }
         return webView
diff --git a/App/Features/Sources/SourceManagementView.swift b/App/Features/Sources/SourceManagementView.swift
index 92a4712..89f4af9 100644
--- a/App/Features/Sources/SourceManagementView.swift
+++ b/App/Features/Sources/SourceManagementView.swift
@@ -61,7 +61,7 @@ struct SourceManagementView: View {
                     Text("新建书源，或从文件、链接、JSON、二维码导入。")
                 } actions: {
                     Button("导入书源", action: presentFileImporter)
-                        .buttonStyle(.borderedProminent)
+                        .readingProminentButtonStyle()
                 }
             } else {
                 List {
diff --git a/App/RootTabView.swift b/App/RootTabView.swift
index e7f6011..fab388e 100644
--- a/App/RootTabView.swift
+++ b/App/RootTabView.swift
@@ -50,6 +50,10 @@ struct RootTabView: View {
                         SearchView(initialKeyword: automationSearchKeyword)
                     } else if requestedDemoPage == "sources" {
                         SourceManagementView()
+                    } else if requestedDemoPage == "rss" {
+                        RSSHomeView()
+                    } else if requestedDemoPage == "rss-photo" {
+                        RSSPhotoView(value: "data:image/png;base64,", source: RssSource(sourceUrl: "https://appearance.invalid", sourceName: "图片外观检查"))
                     } else {
                         BookshelfView()
                     }
@@ -99,7 +103,6 @@ struct RootTabView: View {
                 .tabItem { Label("我的", systemImage: "person.crop.circle") }
                 .tag(Tab.my)
         }
-        .tint(ReadingTheme.accent)
         .readingTabBarBackground()
         .preferredColorScheme(themeMode == "2" ? .dark : (themeMode == "1" || themeMode == "3" ? .light : nil))
         .transaction { transaction in
@@ -123,6 +126,8 @@ struct RootTabView: View {
                 dismissButton: .default(Text("好")) { sourceLibrary.notice = nil }
             )
         }
+        .tint(ReadingTheme.accent)
+        .toggleStyle(SwitchToggleStyle(tint: ReadingTheme.toggleTint))
     }
 
     private var requestedDemoPage: String? {
@@ -487,7 +492,7 @@ private struct ContinueReadingCard: View {
                 .foregroundStyle(ReadingTheme.onAccent)
                 .padding(.horizontal, 18)
                 .frame(minHeight: 40)
-                .background(ReadingTheme.accent, in: Capsule())
+                .background(ReadingTheme.accentFill, in: Capsule())
                 .padding(.top, 20)
             }
             .frame(maxWidth: .infinity, alignment: .leading)
@@ -719,7 +724,7 @@ private struct EmptyBookshelfHero: View {
             }
             VStack(spacing: 12) {
                 Button("导入本地书", action: onImport)
-                    .buttonStyle(.borderedProminent)
+                    .readingProminentButtonStyle()
                     .controlSize(.large)
                 NavigationLink("添加书源") { SourceManagementView() }
                     .font(.subheadline)
@@ -986,7 +991,7 @@ struct SearchView: View {
                     Spacer()
                     if model.isPaused {
                         Button("继续", systemImage: "play.fill") { model.resume() }
-                            .buttonStyle(.bordered)
+                            .readingSecondaryButtonStyle()
                             .controlSize(.small)
                     } else if model.state == .searching {
                         StatusPill(text: "\(model.completedSourceCount)/\(model.totalSourceCount)", systemImage: "magnifyingglass")
@@ -1037,10 +1042,10 @@ struct SearchView: View {
         ) {
             if model.isPaused {
                 Button("继续搜索", systemImage: "play.fill") { model.resume() }
-                    .buttonStyle(.borderedProminent).tint(ReadingTheme.accent)
+                    .readingProminentButtonStyle()
             }
             Button("修改关键词", systemImage: "text.cursor") { searchIsPresented = true }
-                .buttonStyle(.bordered)
+                .readingSecondaryButtonStyle()
         }
     }
 
@@ -1051,13 +1056,13 @@ struct SearchView: View {
             systemImage: "network.slash"
         ) {
             Button("调整范围", systemImage: "scope") { showsScope = true }
-                .buttonStyle(.borderedProminent).tint(ReadingTheme.accent)
+                .readingProminentButtonStyle()
             NavigationLink {
                 SourceManagementView()
             } label: {
                 Label("管理书源", systemImage: "network")
             }
-            .buttonStyle(.bordered)
+            .readingSecondaryButtonStyle()
         }
     }
 
@@ -1281,7 +1286,7 @@ private struct SettingsView: View {
                         .clipped()
                         .overlay {
                             if colorScheme == .dark {
-                                Color.black.opacity(0.62)
+                                Color.black.opacity(0.78)
                             }
                         }
                         .overlay(alignment: .bottom) {
diff --git a/Legado.xcodeproj/project.pbxproj b/Legado.xcodeproj/project.pbxproj
index ca12a8b..50fd36a 100644
--- a/Legado.xcodeproj/project.pbxproj
+++ b/Legado.xcodeproj/project.pbxproj
@@ -6,6 +6,8 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		DA1000000000000000000002 /* AppearanceContrastTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = DA2000000000000000000002; };
+		DA1000000000000000000001 /* DarkModeUITests.swift in Sources */ = {isa = PBXBuildFile; fileRef = DA2000000000000000000001; };
 		B10000000000000000000050 = {isa = PBXBuildFile; fileRef = B20000000000000000000050; };
 		B10000000000000000000030 /* ReaderScrollGeometryTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = B20000000000000000000030; };
 		BC1000000000000000000001 /* WebReaderBridgeTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = BC2000000000000000000001; };
@@ -124,6 +126,8 @@
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
+		DA2000000000000000000002 /* AppearanceContrastTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Tests/LegadoReaderTests/AppearanceContrastTests.swift; sourceTree = SOURCE_ROOT; };
+		DA2000000000000000000001 /* DarkModeUITests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Tests/LegadoReaderUITests/DarkModeUITests.swift; sourceTree = SOURCE_ROOT; };
 		B20000000000000000000050 = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Tests/LegadoReaderUITests/ReaderScrollGestureTests.swift; sourceTree = SOURCE_ROOT; };
 		B20000000000000000000051 = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; path = LegadoReaderUITests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
 		B20000000000000000000030 /* ReaderScrollGeometryTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Tests/LegadoReaderTests/ReaderScrollGeometryTests.swift; sourceTree = SOURCE_ROOT; };
@@ -272,6 +276,8 @@
 				AA2200000000000000000010,
 				B20000000000000000000030 /* ReaderScrollGeometryTests.swift */,
 				BC2000000000000000000001 /* WebReaderBridgeTests.swift */,
+				DA2000000000000000000001 /* DarkModeUITests.swift */,
+				DA2000000000000000000002 /* AppearanceContrastTests.swift */,
 				A30000000000000000000001 /* App */,
 				C30000000000000000000001 /* LegadoCore */,
 				A20000000000000000000024 /* txtTocRule.json */,
@@ -678,8 +684,8 @@
 /* End PBXResourcesBuildPhase section */
 
 /* Begin PBXSourcesBuildPhase section */
-		B30000000000000000000050 = {isa = PBXSourcesBuildPhase; buildActionMask = 2147483647; files = (B10000000000000000000050, AA1100000000000000000009, AA1100000000000000000010); runOnlyForDeploymentPostprocessing = 0; };
-		B30000000000000000000030 = {isa = PBXSourcesBuildPhase; buildActionMask = 2147483647; files = (B10000000000000000000030, BC1000000000000000000001); runOnlyForDeploymentPostprocessing = 0; };
+		B30000000000000000000050 = {isa = PBXSourcesBuildPhase; buildActionMask = 2147483647; files = (B10000000000000000000050, AA1100000000000000000009, AA1100000000000000000010, DA1000000000000000000001); runOnlyForDeploymentPostprocessing = 0; };
+		B30000000000000000000030 = {isa = PBXSourcesBuildPhase; buildActionMask = 2147483647; files = (B10000000000000000000030, BC1000000000000000000001, DA1000000000000000000002); runOnlyForDeploymentPostprocessing = 0; };
 		D30000000000000000000002 /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
diff --git a/Sources/LegadoCore/RSS/RSSReadingPolicy.swift b/Sources/LegadoCore/RSS/RSSReadingPolicy.swift
index 82f6254..1e9105e 100644
--- a/Sources/LegadoCore/RSS/RSSReadingPolicy.swift
+++ b/Sources/LegadoCore/RSS/RSSReadingPolicy.swift
@@ -34,6 +34,12 @@ public struct RSSReadingPolicy: Sendable {
 
 public struct RSSHTMLProcessor: Sendable {
     public static let defaultStyle = "img{max-width:100% !important; width:auto; height:auto;}video{object-fit:fill; max-width:100% !important; width:auto; height:auto;}body{word-wrap:break-word; height:auto;max-width: 100%; width:auto;}"
+    // Keep source CSS later in the cascade so intentional source styling wins.
+    public static let appearanceStyle = """
+    :root{color-scheme:light dark;}
+    body{background-color:#fcfcfc;color:#171717;}
+    @media(prefers-color-scheme:dark){body{background-color:#111113;color:#f2f2f2;}a{color:#9ecbff;}}
+    """
     public init() {}
 
     public func contentHTML(_ content: String, style: String?) -> String {
@@ -53,7 +59,7 @@ public struct RSSHTMLProcessor: Sendable {
     }
 
     private func injectStyle(into content: String, style: String) -> String {
-        let tag = "<style>\(style)</style>"
+        let tag = "<style>\(Self.appearanceStyle)</style><style>\(style)</style>"
         if let range = content.range(of: "</style>") {
             return String(content[..<range.upperBound]) + tag + String(content[range.upperBound...])
         }
diff --git a/Tests/LegadoCoreTests/LegadoDatabaseTests.swift b/Tests/LegadoCoreTests/LegadoDatabaseTests.swift
index 86dcb19..f4d7b8a 100644
--- a/Tests/LegadoCoreTests/LegadoDatabaseTests.swift
+++ b/Tests/LegadoCoreTests/LegadoDatabaseTests.swift
@@ -440,7 +440,7 @@ struct LegadoDatabaseTests {
     @Test func rssHTMLAndResourcePoliciesApplyRulesInOrder() {
         let processor = RSSHTMLProcessor()
         #expect(processor.contentHTML("<head></head><body>x</body>", style: "body{color:red}").contains("<style>body{color:red}</style></head>"))
-        #expect(processor.contentHTML("<p>x</p>", style: nil).hasPrefix("<style>\(RSSHTMLProcessor.defaultStyle)</style>"))
+        #expect(processor.contentHTML("<p>x</p>", style: nil).hasPrefix("<style>\(RSSHTMLProcessor.appearanceStyle)</style><style>\(RSSHTMLProcessor.defaultStyle)</style>"))
         var source = RssSource(sourceUrl: "https://rss", sourceName: "源")
         source.startJs = "window.ready=true"; source.startStyle = "p{font-size:20px}"
         let start = processor.startHTML("<body><p>x</p></body>", source: source)
diff --git a/Tests/LegadoReaderTests/AppearanceContrastTests.swift b/Tests/LegadoReaderTests/AppearanceContrastTests.swift
new file mode 100644
index 0000000..158b3b7
--- /dev/null
+++ b/Tests/LegadoReaderTests/AppearanceContrastTests.swift
@@ -0,0 +1,86 @@
+import SwiftUI
+import UIKit
+import WebKit
+import XCTest
+@testable import Legado
+
+@MainActor
+final class AppearanceContrastTests: XCTestCase {
+    func testLoginWebViewUsesAdaptiveBackgroundBeforeContentArrives() async throws {
+        var source = BookSource(bookSourceUrl: "https://appearance.invalid", bookSourceName: "外观测试")
+        source.loginUrl = "about:blank"
+        let controller = UIHostingController(rootView: SourceLoginView(source: source))
+        let window = UIWindow(frame: CGRect(x: 0, y: 0, width: 390, height: 844))
+        window.overrideUserInterfaceStyle = .dark
+        window.rootViewController = controller
+        window.makeKeyAndVisible()
+        defer { window.isHidden = true }
+        func webView(in view: UIView) -> WKWebView? {
+            if let view = view as? WKWebView { return view }
+            return view.subviews.lazy.compactMap { webView(in: $0) }.first
+        }
+        window.layoutIfNeeded()
+        for _ in 0..<20 {
+            if webView(in: controller.view) != nil { break }
+            try await Task.sleep(nanoseconds: 50_000_000)
+        }
+        let web = try XCTUnwrap(webView(in: controller.view))
+        XCTAssertFalse(web.isOpaque)
+        for style in [UIUserInterfaceStyle.dark, .light] {
+            window.overrideUserInterfaceStyle = style
+            window.layoutIfNeeded()
+            let traits = UITraitCollection(userInterfaceStyle: style)
+            let background = try XCTUnwrap(web.backgroundColor).resolvedColor(with: traits)
+            let scroll = try XCTUnwrap(web.scrollView.backgroundColor).resolvedColor(with: traits)
+            if style == .dark {
+                XCTAssertLessThan(luminance(background), 0.15)
+                XCTAssertLessThan(luminance(scroll), 0.15)
+            } else {
+                XCTAssertGreaterThan(luminance(background), 0.6)
+                XCTAssertGreaterThan(luminance(scroll), 0.6)
+            }
+        }
+    }
+
+    func testSyntaxTokensHaveReadableContrastInBaseAndElevatedAppearances() {
+        let samples: [(SyntaxCodeEditor.Language, String)] = [
+            (.json, #"{"title":"正文","count":12,"enabled":true,"empty":null}"#),
+            (.rule, "@css:div && $.title {{key}} ##"),
+            (.regex, #"\d+.*(word){2,4}"#),
+            (.javascript, "// comment\nconst value = 'text'; return 123; /* comment */")
+        ]
+        for style in [UIUserInterfaceStyle.light, .dark] {
+            for level in [UIUserInterfaceLevel.base, .elevated] {
+                let traits = UITraitCollection(traitsFrom: [
+                    UITraitCollection(userInterfaceStyle: style),
+                    UITraitCollection(userInterfaceLevel: level)
+                ])
+                for (language, text) in samples {
+                    let editor = SyntaxCodeEditor(text: .constant(text), language: language)
+                    let view = UITextView()
+                    view.overrideUserInterfaceStyle = style
+                    view.text = text
+                    editor.makeCoordinator().highlight(view)
+                    let background = UIColor.secondarySystemGroupedBackground.resolvedColor(with: traits)
+                    view.textStorage.enumerateAttribute(.foregroundColor, in: NSRange(location: 0, length: view.textStorage.length)) { color, _, _ in
+                        guard let color = color as? UIColor else { return XCTFail("Missing syntax color") }
+                        let foreground = color.resolvedColor(with: traits)
+                        let values = [luminance(foreground), luminance(background)].sorted()
+                        XCTAssertGreaterThanOrEqual((values[1] + 0.05) / (values[0] + 0.05), 4.5,
+                                                    "Low contrast for \(language), \(style), \(level)")
+                    }
+                }
+            }
+        }
+    }
+
+    private func luminance(_ color: UIColor) -> Double {
+        var r: CGFloat = 0, g: CGFloat = 0, b: CGFloat = 0, a: CGFloat = 0
+        XCTAssertTrue(color.getRed(&r, green: &g, blue: &b, alpha: &a))
+        func linear(_ value: CGFloat) -> Double {
+            let value = Double(value)
+            return value <= 0.04045 ? value / 12.92 : pow((value + 0.055) / 1.055, 2.4)
+        }
+        return 0.2126 * linear(r) + 0.7152 * linear(g) + 0.0722 * linear(b)
+    }
+}
diff --git a/Tests/LegadoReaderTests/WebReaderBridgeTests.swift b/Tests/LegadoReaderTests/WebReaderBridgeTests.swift
index 3bdd2a5..c420f9d 100644
--- a/Tests/LegadoReaderTests/WebReaderBridgeTests.swift
+++ b/Tests/LegadoReaderTests/WebReaderBridgeTests.swift
@@ -5,6 +5,56 @@ import XCTest
 
 @MainActor
 final class WebReaderBridgeTests: XCTestCase {
+    func testGeneratedRSSContentFollowsAppearanceWithoutReloading() async throws {
+        let source = RssSource(sourceUrl: "https://appearance-regression.test", sourceName: "测试")
+        let loaded = expectation(description: "HTML loaded")
+        let surface = RSSWebReaderView(
+            mode: .html(content: "<body><p>订阅正文</p><a href='#'>链接</a><button>操作</button></body>", baseURL: nil),
+            source: source, onTextChange: { _ in loaded.fulfill() }
+        )
+        let coordinator = surface.makeCoordinator()
+        let webView = WKWebView(frame: CGRect(x: 0, y: 0, width: 390, height: 844))
+        webView.navigationDelegate = coordinator
+        let window = UIWindow(frame: webView.frame)
+        let controller = UIViewController()
+        controller.overrideUserInterfaceStyle = .dark
+        controller.view.addSubview(webView)
+        window.rootViewController = controller
+        window.makeKeyAndVisible()
+        defer {
+            RSSWebReaderView.dismantleUIView(webView, coordinator: coordinator)
+            window.isHidden = true
+        }
+        coordinator.installRulesAndLoad(mode: surface.mode, in: webView)
+        await fulfillment(of: [loaded], timeout: 20)
+        let appearanceScript = """
+        [matchMedia('(prefers-color-scheme:dark)').matches,
+         getComputedStyle(document.body).backgroundColor,
+         getComputedStyle(document.body).color,
+         getComputedStyle(document.querySelector('a')).color,
+         getComputedStyle(document.documentElement).colorScheme].map(String).join('|')
+        """
+        let dark = try await webView.evaluateJavaScript(appearanceScript)
+        XCTAssertEqual(dark as? String, "true|rgb(17, 17, 19)|rgb(242, 242, 242)|rgb(158, 203, 255)|light dark")
+        _ = try await webView.evaluateJavaScript("window.appearanceMarker = 'preserved'")
+        controller.overrideUserInterfaceStyle = .light
+        window.layoutIfNeeded()
+        XCTAssertEqual(webView.traitCollection.userInterfaceStyle, .light)
+        var light = try await webView.evaluateJavaScript(appearanceScript)
+        for _ in 0..<50 {
+            if (light as? String)?.hasPrefix("false|") == true { break }
+            try await Task.sleep(nanoseconds: 100_000_000)
+            light = try await webView.evaluateJavaScript(appearanceScript)
+        }
+        XCTAssertEqual(light as? String, "false|rgb(252, 252, 252)|rgb(23, 23, 23)|rgb(0, 0, 238)|light dark")
+        let marker = try await webView.evaluateJavaScript("window.appearanceMarker")
+        XCTAssertEqual(marker as? String, "preserved")
+        // A source may intentionally override the generated article palette.
+        _ = try await webView.evaluateJavaScript("document.head.insertAdjacentHTML('beforeend', '<style>body{color:rgb(120,30,40)}</style>')")
+        let custom = try await webView.evaluateJavaScript("getComputedStyle(document.body).color")
+        XCTAssertEqual(custom as? String, "rgb(120, 30, 40)")
+    }
+
     func testPageJavaScriptCanStoreVariablesAndEvaluateContentRules() async throws {
         let source = RssSource(sourceUrl: "https://bridge-regression.test/\(UUID().uuidString)", sourceName: "测试")
         let loaded = expectation(description: "HTML loaded")
diff --git a/Tests/LegadoReaderUITests/DarkModeUITests.swift b/Tests/LegadoReaderUITests/DarkModeUITests.swift
new file mode 100644
index 0000000..10be1c8
--- /dev/null
+++ b/Tests/LegadoReaderUITests/DarkModeUITests.swift
@@ -0,0 +1,326 @@
+import UIKit
+import XCTest
+
+@MainActor
+final class DarkModeUITests: XCTestCase {
+    func testPrimaryActionsKeepDarkFillInBothAppearances() throws {
+        continueAfterFailure = false
+        for theme in ["2", "1"] {
+            let app = launch(["-uiDemoBookDetail", "-themeMode", theme])
+            let read = app.buttons.matching(NSPredicate(format: "label IN %@", ["开始阅读", "继续阅读"])).firstMatch
+            XCTAssertTrue(read.waitForExistence(timeout: 20))
+            XCTAssertTrue(read.isEnabled)
+            try assertReadableDarkFill(read, in: app)
+            attach(app, name: "Book detail theme \(theme)")
+            app.terminate()
+        }
+    }
+
+    func testNightReaderSelectionsKeepDarkFillAndReadableLabels() throws {
+        continueAfterFailure = false
+        let app = launch([
+            "-uiDemoReader", "-uiDemoReaderStyle", "-themeMode", "2",
+            "-readerTheme", "night", "-readerUseBackgroundImage", "NO",
+            "-lineSpacingExtra", "12", "-pageAnim", "0"
+        ])
+        XCTAssertTrue(app.navigationBars["阅读样式"].waitForExistence(timeout: 20))
+        // Expand the sheet so the controls can be inspected without clipping.
+        app.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.48))
+            .press(forDuration: 0.1, thenDragTo: app.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.12)))
+        let standard = app.buttons["标准"]
+        XCTAssertTrue(standard.waitForExistence(timeout: 5))
+        try assertReadableDarkFill(standard, in: app)
+        attach(app, name: "Night reader spacing selection")
+        let cover = app.buttons["覆盖"]
+        for _ in 0..<16 {
+            if cover.exists && cover.isHittable && cover.frame.maxY < app.frame.height - 50 { break }
+            app.swipeUp()
+        }
+        XCTAssertTrue(cover.exists && cover.isHittable)
+        try assertReadableDarkFill(cover, in: app)
+        attach(app, name: "Night reader animation selection")
+    }
+
+    func testDarkAppearanceAcrossTabsAndPresentedEditors() throws {
+        continueAfterFailure = false
+        let app = launch(["-themeMode", "2"])
+        XCTAssertTrue(app.tabBars.buttons["书架"].waitForExistence(timeout: 20))
+        for (tab, heading) in [("书架", "阅读，让时间有了形状"), ("发现", "下一本好书，在这里遇见"),
+                               ("统计", "每一页，都算数"), ("我的", "按照你的方式阅读")] {
+            app.tabBars.buttons[tab].tap()
+            XCTAssertTrue(app.staticTexts[heading].waitForExistence(timeout: 5))
+            if tab == "统计" {
+                let today = app.otherElements["statistics.todayCard"]
+                XCTAssertTrue(today.waitForExistence(timeout: 5))
+                try assertReadableDarkFill(today, in: app)
+            }
+            attach(app, name: "Dark tab \(tab)")
+        }
+        app.buttons["profile.globe"].tap()
+        XCTAssertTrue(app.navigationBars["书源"].waitForExistence(timeout: 10))
+        attach(app, name: "Dark source library")
+        app.buttons["更多"].firstMatch.tap()
+        app.buttons["新建书源"].tap()
+        XCTAssertTrue(app.navigationBars["新建书源"].waitForExistence(timeout: 10))
+        let basic = app.buttons["基础"]
+        try assertReadableDarkFill(basic, in: app)
+        let login = app.buttons["登录"]
+        login.tap()
+        try assertReadableDarkFill(login, in: app)
+        attach(app, name: "Dark source category selection")
+        attach(app, name: "Dark presented source editor")
+        app.segmentedControls.buttons["JSON"].tap()
+        XCTAssertTrue(app.textViews["syntaxCodeEditor"].waitForExistence(timeout: 5))
+        attach(app, name: "Dark JSON editor")
+        app.textViews["syntaxCodeEditor"].tap()
+        XCTAssertTrue(app.keyboards.firstMatch.waitForExistence(timeout: 5))
+        attach(app, name: "Dark editor keyboard and accessory toolbar")
+        let visibleKeyboard = app.keyboards.firstMatch.frame.intersection(app.frame)
+        if !visibleKeyboard.isNull && visibleKeyboard.width > 20 && visibleKeyboard.height > 20 {
+            let keyboard = try luminances(app.keyboards.firstMatch, in: app)
+            XCTAssertLessThan(keyboard[keyboard.count / 2], 0.15)
+        }
+        let accessory = app.buttons["完成"]
+        let accessoryFrame = accessory.frame.intersection(app.frame)
+        if accessory.isHittable && !accessoryFrame.isNull && accessoryFrame.width > 20 && accessoryFrame.height > 20 {
+            try assertReadableDarkFill(accessory, in: app)
+        }
+    }
+
+    func testDarkSettingsRulesAndManagementPages() throws {
+        continueAfterFailure = false
+        let app = launch(["-uiDemoTab", "settings", "-themeMode", "2"])
+        let routes: [(String, String, String?)] = [
+            ("textformat.size", "阅读设置", nil),
+            ("waveform", "在线朗读引擎", "新建"),
+            ("bookmark", "书签", nil),
+            ("clock", "阅读记录", nil),
+            ("link", "规则订阅", "新建"),
+            ("text.badge.checkmark", "净化规则", "新建规则"),
+            ("list.bullet.rectangle", "TXT目录规则", "新建"),
+            ("folder", "文件管理", nil),
+            ("gearshape", "其他设置", nil),
+            ("info.circle", "关于", nil)
+        ]
+        for (icon, title, create) in routes {
+            let entry = app.buttons["profile.\(icon)"]
+            scrollTo(entry, in: app)
+            entry.tap()
+            XCTAssertTrue(app.navigationBars[title].waitForExistence(timeout: 10))
+            try captureDarkPage(app, name: "Management \(title)")
+            if let create {
+                app.buttons[create].firstMatch.tap()
+                XCTAssertTrue(app.buttons["取消"].waitForExistence(timeout: 5))
+                try captureDarkPage(app, name: "Editor \(title)")
+                if title == "净化规则" {
+                    app.segmentedControls.buttons["测试规则"].tap()
+                    try captureDarkPage(app, name: "Rule test form")
+                }
+                app.buttons["取消"].tap()
+            }
+            if title == "其他设置" {
+                for (entry, destination) in [("网络与缓存设置", "网络与缓存"), ("章节缓存管理", "缓存管理"), ("日志与诊断", "日志与诊断")] {
+                    let link = app.buttons[entry]
+                    scrollTo(link, in: app)
+                    link.tap()
+                    XCTAssertTrue(app.navigationBars[destination].waitForExistence(timeout: 5))
+                    try captureDarkPage(app, name: "Settings \(destination)")
+                    app.navigationBars.firstMatch.buttons.element(boundBy: 0).tap()
+                }
+            }
+            if title == "关于" {
+                let license = app.buttons["开源许可"]
+                scrollTo(license, in: app)
+                license.tap()
+                XCTAssertTrue(app.navigationBars["开源许可"].waitForExistence(timeout: 5))
+                try captureDarkPage(app, name: "Licenses")
+                app.navigationBars.firstMatch.buttons.element(boundBy: 0).tap()
+            }
+            app.navigationBars.firstMatch.buttons.element(boundBy: 0).tap()
+            XCTAssertTrue(app.scrollViews["profile.scroll"].waitForExistence(timeout: 5))
+        }
+    }
+
+    func testDarkSearchFiltersAndSourceImportSheets() throws {
+        continueAfterFailure = false
+        let app = launch(["-uiDemoTab", "search", "-themeMode", "2", "-uiAutomationSearch", "深色外观检查"])
+        let cancelSearch = app.buttons.matching(NSPredicate(format: "label IN %@", ["取消", "Cancel"])).firstMatch
+        if cancelSearch.waitForExistence(timeout: 3) { cancelSearch.tap() }
+        XCTAssertTrue(app.buttons["搜索选项"].waitForExistence(timeout: 10))
+        app.buttons["搜索选项"].tap()
+        app.buttons["分组或书源"].tap()
+        XCTAssertTrue(app.navigationBars["分组或书源"].waitForExistence(timeout: 5))
+        try captureDarkPage(app, name: "Search group filter")
+        app.segmentedControls.buttons["书源"].tap()
+        try captureDarkPage(app, name: "Search source filter")
+        app.buttons["取消"].tap()
+        app.terminate()
+
+        app.launchArguments = ["-uiDemo", "-uiDemoTab", "sources", "-themeMode", "2"]
+        app.launch()
+        XCTAssertTrue(app.navigationBars["书源"].waitForExistence(timeout: 10))
+        app.buttons["排序"].tap()
+        XCTAssertTrue(app.buttons["倒序"].waitForExistence(timeout: 5))
+        try assertReadableDarkFill(app.buttons["倒序"], in: app)
+        attach(app, name: "Source sorting menu")
+        app.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.8)).tap()
+        app.buttons["更多"].firstMatch.tap()
+        app.buttons["URL 或粘贴 JSON"].tap()
+        XCTAssertTrue(app.buttons["取消"].waitForExistence(timeout: 5))
+        try captureDarkPage(app, name: "Source text import")
+    }
+
+    func testDarkRSSAndBlackPhotoViewerInLightAppearance() throws {
+        continueAfterFailure = false
+        let app = launch(["-uiDemoTab", "rss", "-themeMode", "2"])
+        XCTAssertTrue(app.navigationBars["RSS"].waitForExistence(timeout: 10))
+        for tab in ["订阅", "收藏", "记录"] {
+            app.segmentedControls.buttons[tab].tap()
+            try captureDarkPage(app, name: "RSS \(tab)")
+        }
+        app.segmentedControls.buttons["订阅"].tap()
+        app.buttons["RSS操作"].tap()
+        app.buttons["新建RSS源"].tap()
+        XCTAssertTrue(app.navigationBars["新建RSS源"].waitForExistence(timeout: 5))
+        try captureDarkPage(app, name: "RSS source editor")
+        app.terminate()
+
+        app.launchArguments = ["-uiDemo", "-uiDemoTab", "rss-photo", "-themeMode", "1"]
+        app.launch()
+        XCTAssertTrue(app.alerts["图片"].waitForExistence(timeout: 10))
+        app.alerts["图片"].buttons["好"].tap()
+        let error = app.staticTexts["图片加载失败"]
+        XCTAssertTrue(error.waitForExistence(timeout: 5))
+        try assertReadableDarkFill(error, in: app)
+        let done = app.navigationBars.buttons["完成"]
+        XCTAssertTrue(done.exists && done.isEnabled)
+        attach(app, name: "Photo viewer navigation and content")
+        let toolbar = try luminances(done, in: app)
+        XCTAssertGreaterThanOrEqual((toolbar[toolbar.count * 98 / 100] + 0.05) / (toolbar[toolbar.count * 2 / 100] + 0.05), 4.5)
+        attach(app, name: "Readable photo error on black canvas")
+    }
+
+    func testNightReaderMenusAndSettings() throws {
+        continueAfterFailure = false
+        let app = launch(["-uiDemoReader", "-uiDemoReaderMenu", "-readerTheme", "night", "-themeMode", "2", "-readerUseBackgroundImage", "NO"])
+        XCTAssertTrue(app.buttons["目录"].waitForExistence(timeout: 15))
+        try captureDarkPage(app, name: "Night reader menu")
+        app.buttons["目录"].tap()
+        XCTAssertTrue(app.navigationBars["目录"].waitForExistence(timeout: 5))
+        try captureDarkPage(app, name: "Night table of contents")
+        app.buttons["关闭"].tap()
+        app.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.5)).tap()
+        app.buttons["设置"].tap()
+        XCTAssertTrue(app.navigationBars["阅读设置"].waitForExistence(timeout: 5))
+        try captureDarkPage(app, name: "Night reader settings")
+        let click = app.buttons["点击区域设置"]
+        scrollTo(click, in: app)
+        click.tap()
+        XCTAssertTrue(app.navigationBars["点击区域设置"].waitForExistence(timeout: 5))
+        try captureDarkPage(app, name: "Night click action grid")
+    }
+
+    func testAppearanceMenuRestoresSystemAndUpdatesVisiblePage() throws {
+        continueAfterFailure = false
+        // Launch arguments override writes to UserDefaults; leave themeMode mutable here.
+        let app = launch(["-uiDemoTab", "settings"])
+        let appearance = app.buttons["profile.appearance"]
+        XCTAssertTrue(appearance.waitForExistence(timeout: 10))
+        appearance.tap()
+        let system = app.buttons["跟随系统"]
+        XCTAssertTrue(system.waitForExistence(timeout: 3))
+        system.tap()
+        let followsSystem = expectation(for: NSPredicate(format: "value == %@", "跟随系统"), evaluatedWith: appearance)
+        wait(for: [followsSystem], timeout: 5)
+        let initial = try luminances(app, in: app)
+        let systemIsDark = initial[initial.count / 2] < 0.15
+        for (choice, expectsDark) in [("深色", true), ("浅色", false), ("跟随系统", systemIsDark)] {
+            appearance.tap()
+            let option = app.buttons[choice]
+            if !option.waitForExistence(timeout: 2), app.buttons["外观"].exists { app.buttons["外观"].tap() }
+            XCTAssertTrue(option.waitForExistence(timeout: 3))
+            option.tap()
+            let changed = expectation(for: NSPredicate(format: "value == %@", choice), evaluatedWith: appearance)
+            wait(for: [changed], timeout: 5)
+            let values = try luminances(app, in: app)
+            let median = values[values.count / 2]
+            if expectsDark { XCTAssertLessThan(median, 0.15) }
+            else { XCTAssertGreaterThan(median, 0.6) }
+            attach(app, name: "Live appearance \(choice)")
+        }
+    }
+
+    private func scrollTo(_ element: XCUIElement, in app: XCUIApplication) {
+        for _ in 0..<10 {
+            if element.exists && element.isHittable { return }
+            if element.exists && element.frame.maxY < app.frame.height / 2 {
+                app.swipeDown()
+            } else {
+                app.swipeUp()
+            }
+        }
+        XCTAssertTrue(element.exists && element.isHittable)
+    }
+
+    private func captureDarkPage(_ app: XCUIApplication, name: String) throws {
+        let values = try luminances(app, in: app)
+        XCTAssertLessThan(values[values.count / 2], 0.15, "Unexpected light page or sheet: \(name)")
+        attach(app, name: name)
+    }
+
+    // Check both the rendered label contrast and the fill's actual brightness.
+    // A readable white surface must still fail the dark appearance regression.
+    private func assertReadableDarkFill(_ element: XCUIElement, in app: XCUIApplication,
+                                        file: StaticString = #filePath, line: UInt = #line) throws {
+        let luminances = try luminances(element, in: app, file: file, line: line)
+        let low = luminances[luminances.count * 2 / 100]
+        let high = luminances[luminances.count * 98 / 100]
+        XCTAssertGreaterThanOrEqual((high + 0.05) / (low + 0.05), 4.5,
+                                    "Rendered label has insufficient contrast", file: file, line: line)
+        XCTAssertLessThan(luminances[luminances.count / 2], 0.15,
+                          "Filled control or card is too bright for the dark palette", file: file, line: line)
+    }
+
+    private func luminances(_ element: XCUIElement, in app: XCUIApplication,
+                            file: StaticString = #filePath, line: UInt = #line) throws -> [Double] {
+        let image = try XCTUnwrap(app.screenshot().image.cgImage, file: file, line: line)
+        let scaleX = CGFloat(image.width) / app.frame.width
+        let scaleY = CGFloat(image.height) / app.frame.height
+        let bounds = element.frame.intersection(app.frame).insetBy(dx: 8, dy: 8)
+        let rect = CGRect(x: bounds.minX * scaleX, y: bounds.minY * scaleY,
+                          width: bounds.width * scaleX, height: bounds.height * scaleY).integral
+        let crop = try XCTUnwrap(image.cropping(to: rect), file: file, line: line)
+        var bytes = [UInt8](repeating: 0, count: crop.width * crop.height * 4)
+        try bytes.withUnsafeMutableBytes { buffer in
+            let context = try XCTUnwrap(CGContext(
+                data: buffer.baseAddress, width: crop.width, height: crop.height,
+                bitsPerComponent: 8, bytesPerRow: crop.width * 4,
+                space: CGColorSpaceCreateDeviceRGB(),
+                bitmapInfo: CGImageAlphaInfo.premultipliedLast.rawValue | CGBitmapInfo.byteOrder32Big.rawValue
+            ), file: file, line: line)
+            context.draw(crop, in: CGRect(x: 0, y: 0, width: crop.width, height: crop.height))
+        }
+        func linear(_ component: UInt8) -> Double {
+            let value = Double(component) / 255
+            return value <= 0.04045 ? value / 12.92 : pow((value + 0.055) / 1.055, 2.4)
+        }
+        let sampleStride = crop.width * crop.height > 250_000 ? 64 : 4
+        return stride(from: 0, to: bytes.count, by: sampleStride).map {
+            0.2126 * linear(bytes[$0]) + 0.7152 * linear(bytes[$0 + 1]) + 0.0722 * linear(bytes[$0 + 2])
+        }.sorted()
+    }
+
+    private func launch(_ arguments: [String]) -> XCUIApplication {
+        let app = XCUIApplication()
+        app.launchArguments = ["-uiDemo"] + arguments
+        app.launch()
+        return app
+    }
+
+    private func attach(_ app: XCUIApplication, name: String) {
+        let attachment = XCTAttachment(screenshot: app.screenshot())
+        attachment.name = name
+        attachment.lifetime = .keepAlways
+        add(attachment)
+    }
+}