ijaa · ijaa · Jul 22, 2026 · Jul 22, 2026 · Jul 22, 2026
diff --git a/App/Info.plist b/App/Info.plist
@@ -19,9 +19,9 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>0.6.0</string>
+	<string>0.7.0</string>
 	<key>CFBundleVersion</key>
-	<string>14</string>
+	<string>15</string>
 	<key>LSMinimumSystemVersion</key>
 	<string>12.0</string>
 	<key>NSHighResolutionCapable</key>

diff --git a/App/Resources/reader/app.js b/App/Resources/reader/app.js
diff --git a/App/Resources/reader/fonts/KaTeX_AMS-Regular.woff2 b/App/Resources/reader/fonts/KaTeX_AMS-Regular.woff2
diff --git a/App/Resources/reader/fonts/KaTeX_Caligraphic-Bold.woff2 b/App/Resources/reader/fonts/KaTeX_Caligraphic-Bold.woff2
diff --git a/App/Resources/reader/fonts/KaTeX_Caligraphic-Regular.woff2 b/App/Resources/reader/fonts/KaTeX_Caligraphic-Regular.woff2
diff --git a/App/Resources/reader/fonts/KaTeX_Fraktur-Bold.woff2 b/App/Resources/reader/fonts/KaTeX_Fraktur-Bold.woff2
diff --git a/App/Resources/reader/fonts/KaTeX_Fraktur-Regular.woff2 b/App/Resources/reader/fonts/KaTeX_Fraktur-Regular.woff2
diff --git a/App/Resources/reader/fonts/KaTeX_Main-Bold.woff2 b/App/Resources/reader/fonts/KaTeX_Main-Bold.woff2
diff --git a/App/Resources/reader/fonts/KaTeX_Main-BoldItalic.woff2 b/App/Resources/reader/fonts/KaTeX_Main-BoldItalic.woff2
diff --git a/App/Resources/reader/fonts/KaTeX_Main-Italic.woff2 b/App/Resources/reader/fonts/KaTeX_Main-Italic.woff2
diff --git a/App/Resources/reader/fonts/KaTeX_Main-Regular.woff2 b/App/Resources/reader/fonts/KaTeX_Main-Regular.woff2
diff --git a/App/Resources/reader/fonts/KaTeX_Math-BoldItalic.woff2 b/App/Resources/reader/fonts/KaTeX_Math-BoldItalic.woff2
diff --git a/App/Resources/reader/fonts/KaTeX_Math-Italic.woff2 b/App/Resources/reader/fonts/KaTeX_Math-Italic.woff2
diff --git a/App/Resources/reader/fonts/KaTeX_SansSerif-Bold.woff2 b/App/Resources/reader/fonts/KaTeX_SansSerif-Bold.woff2
diff --git a/App/Resources/reader/fonts/KaTeX_SansSerif-Italic.woff2 b/App/Resources/reader/fonts/KaTeX_SansSerif-Italic.woff2
diff --git a/App/Resources/reader/fonts/KaTeX_SansSerif-Regular.woff2 b/App/Resources/reader/fonts/KaTeX_SansSerif-Regular.woff2
diff --git a/App/Resources/reader/fonts/KaTeX_Script-Regular.woff2 b/App/Resources/reader/fonts/KaTeX_Script-Regular.woff2
diff --git a/App/Resources/reader/fonts/KaTeX_Size1-Regular.woff2 b/App/Resources/reader/fonts/KaTeX_Size1-Regular.woff2
diff --git a/App/Resources/reader/fonts/KaTeX_Size2-Regular.woff2 b/App/Resources/reader/fonts/KaTeX_Size2-Regular.woff2
diff --git a/App/Resources/reader/fonts/KaTeX_Size3-Regular.woff2 b/App/Resources/reader/fonts/KaTeX_Size3-Regular.woff2
diff --git a/App/Resources/reader/fonts/KaTeX_Size4-Regular.woff2 b/App/Resources/reader/fonts/KaTeX_Size4-Regular.woff2
diff --git a/App/Resources/reader/fonts/KaTeX_Typewriter-Regular.woff2 b/App/Resources/reader/fonts/KaTeX_Typewriter-Regular.woff2
diff --git a/App/Resources/reader/index.html b/App/Resources/reader/index.html
@@ -12,6 +12,8 @@
     <link rel="stylesheet" href="styles/themes.css" />
     <link rel="stylesheet" href="styles/reader.css" />
     <link rel="stylesheet" href="styles/hljs.css" />
+    <!-- F4: KaTeX 样式（构建时从 katex 包剥离 woff/ttf 拷贝到 dist/styles/katex.min.css）。 -->
+    <link rel="stylesheet" href="styles/katex.min.css" />
   </head>
   <body>
     <div id="app">

diff --git a/App/Resources/reader/styles/katex.min.css b/App/Resources/reader/styles/katex.min.css
diff --git a/App/Resources/reader/styles/reader.css b/App/Resources/reader/styles/reader.css
@@ -2,6 +2,11 @@
   box-sizing: border-box;
 }
 
+:root {
+  --font-scale: 1;
+  --content-max-width-px: 672px;
+}
+
 html,
 body {
   margin: 0;
@@ -10,7 +15,8 @@ body {
   color: var(--fg);
   font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
     "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
-  font-size: 16px;
+  /* F1：屏幕字号随 --font-scale 缩放；rem 的 h1-h3 自动跟动。打印用 @media print 固定。 */
+  font-size: calc(16px * var(--font-scale, 1));
   line-height: 1.65;
 }
 
@@ -135,7 +141,7 @@ body {
 }
 
 .markdown-body > * {
-  max-width: 42rem;
+  max-width: var(--content-max-width-px, 42rem);
   margin-left: auto;
   margin-right: auto;
 }
@@ -264,7 +270,7 @@ body {
   border: none;
   border-top: 1px solid var(--border);
   margin: 2em auto;
-  max-width: 42rem;
+  max-width: var(--content-max-width-px, 42rem);
 }
 
 .markdown-body input[type="checkbox"] {
@@ -301,6 +307,100 @@ body {
   border-color: #8a4040;
 }
 
+/* F4：KaTeX 块级公式横向溢出可滚，避免宽公式撑破栏宽。 */
+.markdown-body .katex-display {
+  overflow-x: auto;
+  overflow-y: hidden;
+  padding: 4px 0;
+}
+
+/* F5：文内查找条（纯 JS，fixed top-right 胶囊）。 */
+.find-bar {
+  position: fixed;
+  top: 8px;
+  right: 14px;
+  z-index: 10;
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  background: var(--bg-elevated);
+  border: 1px solid var(--border);
+  border-radius: 8px;
+  padding: 4px 8px;
+  box-shadow: 0 2px 8px var(--shadow);
+}
+.find-bar.hidden {
+  display: none;
+}
+.find-bar input {
+  border: 1px solid var(--border);
+  background: var(--bg);
+  color: var(--fg);
+  border-radius: 6px;
+  padding: 2px 6px;
+  font-size: 13px;
+  width: 200px;
+  outline: none;
+}
+.find-bar input:focus {
+  border-color: var(--link);
+}
+.find-bar button {
+  border: 1px solid var(--border);
+  background: var(--bg);
+  color: var(--fg);
+  border-radius: 6px;
+  padding: 2px 8px;
+  font-size: 12px;
+  cursor: pointer;
+}
+.find-bar button:hover {
+  border-color: var(--fg-muted);
+}
+.find-case {
+  font-size: 12px;
+  color: var(--fg-muted);
+  display: flex;
+  align-items: center;
+  gap: 3px;
+  user-select: none;
+}
+mark.mdeye-find {
+  background: #ffe89a;
+  color: inherit;
+  border-radius: 2px;
+}
+mark.mdeye-find.current {
+  background: #ff9a3c;
+}
+[data-theme="dark"] mark.mdeye-find {
+  background: rgba(255, 200, 80, 0.4);
+}
+[data-theme="dark"] mark.mdeye-find.current {
+  background: rgba(255, 140, 40, 0.7);
+}
+
+/* F6：阅读器轻提示浮层（fixed bottom-center 胶囊，3s 自动消失）。 */
+.mdeye-toast {
+  position: fixed;
+  left: 50%;
+  bottom: 28px;
+  transform: translateX(-50%);
+  background: var(--bg-elevated);
+  color: var(--fg);
+  border: 1px solid var(--border);
+  border-radius: 8px;
+  padding: 10px 14px;
+  font-size: 13px;
+  line-height: 1.45;
+  box-shadow: 0 4px 16px var(--shadow);
+  z-index: 20;
+  max-width: 80vw;
+}
+.mdeye-toast.warn {
+  border-color: #d39b00;
+}
+
 /* PDF export uses a dedicated WKWebView and WebKit's print pagination.
    Paper size and 16 mm margins are configured by NSPrintInfo, not duplicated here. */
 @media print {
@@ -338,6 +438,8 @@ body {
   body {
     background: #ffffff !important;
     color: var(--fg) !important;
+    /* F1：打印固定字号，屏幕缩放不污染 PDF。 */
+    font-size: 16px !important;
     -webkit-print-color-adjust: exact;
     print-color-adjust: exact;
   }
@@ -354,6 +456,29 @@ body {
     margin-right: 0;
   }
 
+  /* F1：栏宽变量在打印时同样收起铺满纸面。 */
+  .markdown-body hr {
+    max-width: none !important;
+  }
+
+  /* F4：块级公式横向溢出在分页时安全滚动，不再保留屏显的外边距。 */
+  .markdown-body .katex-display {
+    overflow: visible !important;
+    break-inside: avoid;
+  }
+
+  /* F5/F6：阅读器浮层不进 PDF。 */
+  .find-bar,
+  .mdeye-toast {
+    display: none !important;
+  }
+
+  /* F5：查找高亮在打印中退化为普通文本样式。 */
+  mark.mdeye-find {
+    background: transparent !important;
+    color: inherit !important;
+  }
+
   a {
     color: inherit !important;
     text-decoration: none !important;

diff --git a/App/Sources/AppDelegate.swift b/App/Sources/AppDelegate.swift
@@ -26,8 +26,29 @@ final class AppDelegate: NSObject, NSApplicationDelegate {
 
         // Some Launch Services paths only show up slightly after launch.
         DispatchQueue.main.async { [weak self] in
-            self?.flushPendingPaths()
+            guard let self else { return }
+            self.flushPendingPaths()
+            // F2: 仍无外部传入 path → 尝试恢复上次打开的文件（单文件语义，
+            // 复用 openFile 入口，不开新窗/标签）。失效路径会被清空，不再重试。
+            if self.pendingPaths.isEmpty, self.windowController != nil {
+                self.restoreLastOpenedPath()
+            }
+        }
+    }
+
+    private func restoreLastOpenedPath() {
+        guard let last = Preferences.shared.lastOpenedPath,
+              !last.isEmpty,
+              FileManager.default.fileExists(atPath: last) else {
+            // 失效路径清空，避免下次启动再尝试并触发错误对话框。
+            if Preferences.shared.lastOpenedPath != nil {
+                Preferences.shared.lastOpenedPath = nil
+                NSLog("mdeye: lastOpenedPath cleared (missing)")
+            }
+            return
         }
+        NSLog("mdeye: restoring lastOpenedPath → %@", last)
+        windowController?.openFile(path: last)
     }
 
     func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {

diff --git a/App/Sources/FileService.swift b/App/Sources/FileService.swift
@@ -90,11 +90,40 @@ enum FileService {
         if let s = String(data: data, encoding: .utf8) {
             return (s, "utf-8")
         }
+        // GB18030（GBK 超集）：常见 Windows 中文 .md。.gb18030 便捷常量只在 Apple
+        // Foundation 提供，corelibs-foundation（CI 的 swift-corelibs）无此成员；
+        // 用 CFStringConvert 跨平台拿到 NSStringEncoding。
+        let gb18030 = String.Encoding(rawValue: CFStringConvertEncodingToNSStringEncoding(
+            CFStringEncoding(CFStringEncodings.GB_18030_2000.rawValue)
+        ))
+        if let s = String(data: data, encoding: gb18030) {
+            return (s, "gb18030")
+        }
         if let s = String(data: data, encoding: .utf16) {
             return (s, "utf-16")
         }
         // Fallback: lossy ISO Latin-1 style
         let s = String(decoding: data, as: UTF8.self)
         return (s, "utf-8-lossy")
     }
+
+    /// 富文本标记命中检测（纯函数，便于 CI 自检）。命中即提示用户在 TextEdit 里用
+    /// 「格式→制作纯文本」清理，避免富文本保存破坏 Markdown 源。阈值保守：纯
+    /// ASCII / UTF-8 / GB18030 文本的非预期控制符正常为 0，不会误报。
+    static func looksLikeRichText(_ text: String) -> Bool {
+        if text.hasPrefix("{\\rtf1") { return true }
+        if text.range(of: "\\\\object\\\\objhtml", options: .regularExpression) != nil { return true }
+        if text.range(of: "\\\\fonttbl", options: .regularExpression) != nil { return true }
+        // 前 2KB 内非预期控制符密集出现（\x00-\x08 \x0B \x0C \x0E-\x1F；放行 \t \n \r）。
+        let head = text.prefix(2048)
+        var ctrl = 0
+        for c in head {
+            guard let s = c.asciiValue else { continue }
+            if s < 9 || (s > 10 && s < 13) || (s > 13 && s < 32) {
+                ctrl += 1
+                if ctrl >= 4 { return true }
+            }
+        }
+        return false
+    }
 }
diff --git a/App/Sources/MainWindowController.swift b/App/Sources/MainWindowController.swift
@@ -75,6 +75,18 @@ final class MainWindowController: NSWindowController, NSWindowDelegate {
         viewMenu.addItem(withTitle: "Theme: Dark", action: #selector(setThemeDark(_:)), keyEquivalent: "2")
         viewMenu.addItem(withTitle: "Theme: Sepia", action: #selector(setThemeSepia(_:)), keyEquivalent: "3")
         viewMenu.addItem(withTitle: "Theme: Green", action: #selector(setThemeGreen(_:)), keyEquivalent: "4")
+        viewMenu.addItem(NSMenuItem.separator())
+        // F1：字号缩放（⌘+/⌘-/⌘0）与栏宽调整（⌥+/⌥-）。
+        viewMenu.addItem(withTitle: "Zoom In (Text)", action: #selector(zoomTextIn(_:)), keyEquivalent: "+")
+        viewMenu.addItem(withTitle: "Zoom Out (Text)", action: #selector(zoomTextOut(_:)), keyEquivalent: "-")
+        viewMenu.addItem(withTitle: "Reset Text Zoom", action: #selector(zoomTextReset(_:)), keyEquivalent: "0")
+        viewMenu.addItem(NSMenuItem.separator())
+        let widen = NSMenuItem(title: "Widen Column", action: #selector(widenColumn(_:)), keyEquivalent: "+")
+        widen.keyEquivalentModifierMask = [.option]
+        viewMenu.addItem(widen)
+        let narrow = NSMenuItem(title: "Narrow Column", action: #selector(narrowColumn(_:)), keyEquivalent: "-")
+        narrow.keyEquivalentModifierMask = [.option]
+        viewMenu.addItem(narrow)
 
         let windowMenuItem = NSMenuItem()
         mainMenu.addItem(windowMenuItem)
@@ -132,6 +144,13 @@ final class MainWindowController: NSWindowController, NSWindowDelegate {
     @objc private func setThemeSepia(_ sender: Any?) { contentController.setTheme("sepia") }
     @objc private func setThemeGreen(_ sender: Any?) { contentController.setTheme("green") }
 
+    // F1：屏幕缩放（字号 / 栏宽）。打印不沿用——CSS @media print 固定字号与 max-width。
+    @objc private func zoomTextIn(_ sender: Any?) { contentController.adjustFontSizeScale(by: 0.1) }
+    @objc private func zoomTextOut(_ sender: Any?) { contentController.adjustFontSizeScale(by: -0.1) }
+    @objc private func zoomTextReset(_ sender: Any?) { contentController.setFontSizeScale(1.0) }
+    @objc private func widenColumn(_ sender: Any?) { contentController.adjustContentMaxWidth(by: 32) }
+    @objc private func narrowColumn(_ sender: Any?) { contentController.adjustContentMaxWidth(by: -32) }
+
     @objc private func setAsDefaultApp(_ sender: Any?) {
         let result = DefaultAppService.setAsDefaultMarkdownViewer()
         let alert = NSAlert()

diff --git a/App/Sources/Preferences.swift b/App/Sources/Preferences.swift
@@ -8,6 +8,8 @@ final class Preferences {
         static let theme = "theme"
         static let lastOpenedPath = "lastOpenedPath"
         static let outlineOpen = "outlineOpen"
+        static let fontSizeScale = "fontSizeScale"
+        static let contentMaxWidth = "contentMaxWidth"
     }
 
     var theme: String {
@@ -28,6 +30,24 @@ final class Preferences {
         set { defaults.set(newValue, forKey: Key.outlineOpen) }
     }
 
+    /// 字号缩放系数，默认 1.0，范围 0.85–2.0。屏幕阅读用；打印不沿用（@media print 固定）。
+    var fontSizeScale: Double {
+        get {
+            let v = defaults.object(forKey: Key.fontSizeScale) as? Double ?? 1.0
+            return min(max(v, 0.85), 2.0)
+        }
+        set { defaults.set(min(max(newValue, 0.85), 2.0), forKey: Key.fontSizeScale) }
+    }
+
+    /// 正文内容最大宽度（px），默认 672（= 42rem @ 16px），范围 600–1100。
+    var contentMaxWidth: Int {
+        get {
+            let v = defaults.object(forKey: Key.contentMaxWidth) as? Int ?? 672
+            return min(max(v, 600), 1100)
+        }
+        set { defaults.set(min(max(newValue, 600), 1100), forKey: Key.contentMaxWidth) }
+    }
+
     func set(key: String, value: Any?) {
         switch key {
         case "theme":
@@ -36,6 +56,13 @@ final class Preferences {
             if let b = value as? Bool { outlineOpen = b }
         case "lastOpenedPath":
             lastOpenedPath = value as? String
+        case "fontSizeScale":
+            // JS JSON 可能把整数化的 Double 传成 Int，统一转 Double。
+            if let n = value as? Double { fontSizeScale = n }
+            else if let n = value as? Int { fontSizeScale = Double(n) }
+        case "contentMaxWidth":
+            if let n = value as? Int { contentMaxWidth = n }
+            else if let n = value as? Double { contentMaxWidth = Int(n) }
         default:
             break
         }