diff --git a/CHANGELOG.md b/CHANGELOG.md
index 944a426..05466f0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,7 @@
 - 启动项（主窗口工具分组）：列出当前用户、所有用户的 LaunchAgents 和系统 LaunchDaemons，显示所属应用、可执行文件、是否登录时运行 / 保持运行，以及运行中（PID）、已加载、已停用状态；当前用户的启动项可以直接停用或重新启用（写入 launchd 停用记录并卸载，不删除文件），其余只读并提供登录项设置入口。
 - 历史（主窗口监控分组）：每分钟把 CPU 平均与峰值、内存与内存压力、网络上下行、GPU、CPU 最高温度和整机功耗写入本机 SQLite 数据库，保留 7 天；可回看最近 1 小时 / 24 小时 / 7 天，睡眠等没有记录的时段线条断开，内存压力严重的时段标红，鼠标移到图上查看那一刻的数值；可关闭记录或清除历史，数据不上传。
 - 蓝牙设备电量：本机信息页列出已连接的键盘、鼠标、触控板和耳机的电量（AirPods 分左耳、右耳、充电盒），低于 20% 标红；通知里新增“蓝牙设备电量低”（低于 15%）。
+- 全局快捷键（设置 · 通用）：可为显示 / 隐藏主窗口、打开进程页、开关防休眠、释放内存录制快捷键，在任何应用中都能用，不需要辅助功能权限；被其他应用占用时提示更换。
 
 #### 调整
 
diff --git a/Packages/OpenStatsKit/Sources/OpenStatsUI/AppKit/AppController.swift b/Packages/OpenStatsKit/Sources/OpenStatsUI/AppKit/AppController.swift
index 3201927..ad803f2 100644
--- a/Packages/OpenStatsKit/Sources/OpenStatsUI/AppKit/AppController.swift
+++ b/Packages/OpenStatsKit/Sources/OpenStatsUI/AppKit/AppController.swift
@@ -9,6 +9,7 @@ public final class AppController: NSObject, NSApplicationDelegate {
     private var mainWindow: MainWindowController!
     private var updateWindow: UpdateWindowController!
     private var updateTimer: Timer?
+    private let hotKeys = HotKeyCenter()
     private var workspaceObservers: [NSObjectProtocol] = []
 
     public override init() {
@@ -58,6 +59,8 @@ public final class AppController: NSObject, NSApplicationDelegate {
             self?.mainWindow.show(tab: tab)
         }
         model.alerts.start()
+        hotKeys.onAction = { [weak self] action in self?.perform(action) }
+        applyHotKeys()
 
         // 开发调试：--show-panel [cpu|memory|network|gpu|temperature|fan] 启动后展开并固定弹窗；--show-window 打开主窗口
         let arguments = CommandLine.arguments
@@ -112,6 +115,31 @@ public final class AppController: NSObject, NSApplicationDelegate {
         mainWindow.show(tab: .settingsAbout)
     }
 
+    private func applyHotKeys() {
+        hotKeys.apply(model.settings.hotKeys)
+        model.hotKeyConflicts = hotKeys.conflicts
+        withObservationTracking {
+            _ = model.settings.hotKeys
+        } onChange: { [weak self] in
+            Task { @MainActor in self?.applyHotKeys() }
+        }
+    }
+
+    private func perform(_ action: HotKeyAction) {
+        Log.app.info("快捷键：\(action.rawValue, privacy: .public)")
+        switch action {
+        case .toggleMainWindow:
+            if mainWindow.isVisible && NSApp.isActive { mainWindow.close() } else { mainWindow.show(tab: nil) }
+        case .showProcesses:
+            menuBar.dismissPopovers()
+            mainWindow.show(tab: .processes)
+        case .toggleKeepAwake:
+            Task { await model.keepAwake.setActive(!model.keepAwake.isActive) }
+        case .purgeMemory:
+            Task { await model.maintenance.run(.purgeMemory) }
+        }
+    }
+
     /// 启动 10 秒后检查一次，之后每小时看一眼是否已满一天
     private func startUpdateChecks() {
         model.updates.onPrompt = { [weak self] in
diff --git a/Packages/OpenStatsKit/Sources/OpenStatsUI/AppKit/HotKeyCenter.swift b/Packages/OpenStatsKit/Sources/OpenStatsUI/AppKit/HotKeyCenter.swift
new file mode 100644
index 0000000..3238f10
--- /dev/null
+++ b/Packages/OpenStatsKit/Sources/OpenStatsUI/AppKit/HotKeyCenter.swift
@@ -0,0 +1,127 @@
+import AppKit
+import Carbon.HIToolbox
+
+/// 可以绑定全局快捷键的操作
+public enum HotKeyAction: String, CaseIterable, Identifiable, Codable, Sendable {
+    case toggleMainWindow, showProcesses, toggleKeepAwake, purgeMemory
+
+    public var id: String { rawValue }
+
+    var title: String {
+        switch self {
+        case .toggleMainWindow: "显示 / 隐藏主窗口"
+        case .showProcesses: "打开进程页"
+        case .toggleKeepAwake: "开关防休眠"
+        case .purgeMemory: "释放内存"
+        }
+    }
+
+    /// Carbon 热键编号，从 1 开始
+    var carbonID: UInt32 { UInt32(Self.allCases.firstIndex(of: self)! + 1) }
+}
+
+/// 一个快捷键：虚拟键码加修饰键
+public struct HotKey: Codable, Equatable, Sendable {
+    public var keyCode: UInt16
+    /// NSEvent.ModifierFlags 的原始值，只保留 ⌃⌥⇧⌘
+    public var modifiers: UInt
+    /// 录制时按下的字符，用于显示
+    public var key: String
+
+    public init(keyCode: UInt16, modifiers: NSEvent.ModifierFlags, key: String) {
+        self.keyCode = keyCode
+        self.modifiers = modifiers.intersection([.control, .option, .shift, .command]).rawValue
+        self.key = key
+    }
+
+    var flags: NSEvent.ModifierFlags { NSEvent.ModifierFlags(rawValue: modifiers) }
+
+    /// 至少带一个 ⌃、⌥ 或 ⌘，避免抢走普通按键
+    var isValid: Bool { !flags.intersection([.control, .option, .command]).isEmpty }
+
+    var display: String {
+        var text = ""
+        if flags.contains(.control) { text += "⌃" }
+        if flags.contains(.option) { text += "⌥" }
+        if flags.contains(.shift) { text += "⇧" }
+        if flags.contains(.command) { text += "⌘" }
+        return text + Self.keyName(keyCode: keyCode, fallback: key)
+    }
+
+    var carbonModifiers: UInt32 {
+        var result: UInt32 = 0
+        if flags.contains(.control) { result |= UInt32(controlKey) }
+        if flags.contains(.option) { result |= UInt32(optionKey) }
+        if flags.contains(.shift) { result |= UInt32(shiftKey) }
+        if flags.contains(.command) { result |= UInt32(cmdKey) }
+        return result
+    }
+
+    private static let functionKeys: [Int: Int] = [
+        kVK_F1: 1, kVK_F2: 2, kVK_F3: 3, kVK_F4: 4, kVK_F5: 5, kVK_F6: 6,
+        kVK_F7: 7, kVK_F8: 8, kVK_F9: 9, kVK_F10: 10, kVK_F11: 11, kVK_F12: 12,
+    ]
+
+    static func keyName(keyCode: UInt16, fallback: String) -> String {
+        switch Int(keyCode) {
+        case kVK_Space: "空格"
+        case kVK_Return: "↩"
+        case kVK_Tab: "⇥"
+        case kVK_Delete: "⌫"
+        case kVK_Escape: "⎋"
+        case kVK_LeftArrow: "←"
+        case kVK_RightArrow: "→"
+        case kVK_UpArrow: "↑"
+        case kVK_DownArrow: "↓"
+        default:
+            // F1–F12 的虚拟键码不连续，逐个对照
+            functionKeys[Int(keyCode)].map { "F\($0)" } ?? fallback.uppercased()
+        }
+    }
+}
+
+/// 用 Carbon 注册系统级快捷键：不需要辅助功能权限，应用在后台也能响应
+@MainActor
+final class HotKeyCenter {
+    private var references: [HotKeyAction: EventHotKeyRef] = [:]
+    private var handler: EventHandlerRef?
+    var onAction: (HotKeyAction) -> Void = { _ in }
+    /// 注册失败（被其他应用占用）的操作
+    private(set) var conflicts: Set<HotKeyAction> = []
+
+    private static weak var current: HotKeyCenter?
+
+    func apply(_ bindings: [HotKeyAction: HotKey]) {
+        installHandlerIfNeeded()
+        for reference in references.values { UnregisterEventHotKey(reference) }
+        references = [:]
+        conflicts = []
+        for (action, hotKey) in bindings where hotKey.isValid {
+            var reference: EventHotKeyRef?
+            let id = EventHotKeyID(signature: Self.signature, id: action.carbonID)
+            let status = RegisterEventHotKey(UInt32(hotKey.keyCode), hotKey.carbonModifiers, id, GetApplicationEventTarget(), 0, &reference)
+            if status == noErr, let reference {
+                references[action] = reference
+            } else {
+                conflicts.insert(action)
+            }
+        }
+    }
+
+    private static let signature: OSType = 0x4F505354   // "OPST"
+
+    private func installHandlerIfNeeded() {
+        guard handler == nil else { return }
+        Self.current = self
+        var spec = EventTypeSpec(eventClass: OSType(kEventClassKeyboard), eventKind: UInt32(kEventHotKeyPressed))
+        InstallEventHandler(GetApplicationEventTarget(), { _, event, _ -> OSStatus in
+            var id = EventHotKeyID()
+            let status = GetEventParameter(event, EventParamName(kEventParamDirectObject), EventParamType(typeEventHotKeyID),
+                                           nil, MemoryLayout<EventHotKeyID>.size, nil, &id)
+            guard status == noErr, id.signature == HotKeyCenter.signature,
+                  let action = HotKeyAction.allCases.first(where: { $0.carbonID == id.id }) else { return OSStatus(eventNotHandledErr) }
+            MainActor.assumeIsolated { HotKeyCenter.current?.onAction(action) }
+            return noErr
+        }, 1, &spec, nil, &handler)
+    }
+}
diff --git a/Packages/OpenStatsKit/Sources/OpenStatsUI/AppKit/MainWindowController.swift b/Packages/OpenStatsKit/Sources/OpenStatsUI/AppKit/MainWindowController.swift
index 0803cfb..185af72 100644
--- a/Packages/OpenStatsKit/Sources/OpenStatsUI/AppKit/MainWindowController.swift
+++ b/Packages/OpenStatsKit/Sources/OpenStatsUI/AppKit/MainWindowController.swift
@@ -15,6 +15,10 @@ final class MainWindowController: NSObject, NSWindowDelegate {
 
     var isVisible: Bool { window?.isVisible == true }
 
+    func close() {
+        window?.performClose(nil)
+    }
+
     func show(tab: PanelTab?) {
         if let tab { model.settings.panelTab = tab }
         let window = self.window ?? makeWindow()
diff --git a/Packages/OpenStatsKit/Sources/OpenStatsUI/Settings/SettingsPages.swift b/Packages/OpenStatsKit/Sources/OpenStatsUI/Settings/SettingsPages.swift
index 20a7e6a..1b2bacc 100644
--- a/Packages/OpenStatsKit/Sources/OpenStatsUI/Settings/SettingsPages.swift
+++ b/Packages/OpenStatsKit/Sources/OpenStatsUI/Settings/SettingsPages.swift
@@ -86,6 +86,8 @@ struct GeneralSettings: View {
                 }
             }
         }
+
+        HotKeySettings()
     }
 }
 
@@ -176,6 +178,78 @@ struct DiagnosticsSettings: View {
     }
 }
 
+// MARK: - 快捷键
+
+struct HotKeySettings: View {
+    @Environment(AppModel.self) private var model
+
+    var body: some View {
+        let settings = model.settings
+        SettingsGroup(caption: "全局快捷键（在任何应用中都能使用，需要包含 ⌘、⌥ 或 ⌃）") {
+            ForEach(Array(HotKeyAction.allCases.enumerated()), id: \.element) { index, action in
+                GroupRow(showsDivider: index > 0) {
+                    SettingRow(title: action.title,
+                               subtitle: model.hotKeyConflicts.contains(action) ? "这个快捷键已被其他应用或系统占用，请换一个" : nil) {
+                        ShortcutRecorder(hotKey: Binding(get: { settings.hotKeys[action] },
+                                                         set: { settings.hotKeys[action] = $0 }))
+                    }
+                }
+            }
+        }
+    }
+}
+
+/// 点一下开始录制，按下组合键完成；Esc 取消，⌫ 清除
+struct ShortcutRecorder: View {
+    @Binding var hotKey: HotKey?
+    @State private var recording = false
+    @State private var monitor: Any?
+
+    var body: some View {
+        HStack(spacing: DS.Space.s1) {
+            Button {
+                recording ? stop() : start()
+            } label: {
+                Text(verbatim: recording ? "按下快捷键…" : hotKey?.display ?? "录制快捷键")
+                    .dsFont(.sm, weight: hotKey == nil || recording ? .regular : .semibold)
+                    .monospacedDigit()
+                    .frame(minWidth: DS.Space.s16 + DS.Space.s12)
+            }
+            .buttonStyle(DSButtonStyle(kind: recording ? .primary : .secondary))
+            if hotKey != nil && !recording {
+                MiniIconButton(systemName: "xmark.circle.fill", help: "清除快捷键") { hotKey = nil }
+            }
+        }
+        .onDisappear { stop() }
+    }
+
+    private func start() {
+        recording = true
+        monitor = NSEvent.addLocalMonitorForEvents(matching: .keyDown) { event in
+            switch Int(event.keyCode) {
+            case 53:   // Esc
+                stop()
+            case 51 where event.modifierFlags.intersection([.command, .option, .control]).isEmpty:   // Delete
+                hotKey = nil
+                stop()
+            default:
+                let candidate = HotKey(keyCode: event.keyCode, modifiers: event.modifierFlags,
+                                       key: event.charactersIgnoringModifiers ?? "")
+                guard candidate.isValid else { NSSound.beep(); return nil }
+                hotKey = candidate
+                stop()
+            }
+            return nil
+        }
+    }
+
+    private func stop() {
+        recording = false
+        if let monitor { NSEvent.removeMonitor(monitor) }
+        monitor = nil
+    }
+}
+
 // MARK: - 菜单栏
 
 struct MenuBarSettings: View {
diff --git a/Packages/OpenStatsKit/Sources/OpenStatsUI/State/AppModel.swift b/Packages/OpenStatsKit/Sources/OpenStatsUI/State/AppModel.swift
index f5dae56..33131a5 100644
--- a/Packages/OpenStatsKit/Sources/OpenStatsUI/State/AppModel.swift
+++ b/Packages/OpenStatsKit/Sources/OpenStatsUI/State/AppModel.swift
@@ -27,6 +27,8 @@ public final class AppModel {
     @ObservationIgnored public let hub = MetricsHub()
 
     public var isMainWindowVisible = false
+    /// 被其他应用占用、没能注册的快捷键
+    public var hotKeyConflicts: Set<HotKeyAction> = []
     /// 当前打开的菜单栏详情弹窗
     public var openPopover: MenuBarItem?
     public private(set) var launchAtLoginEnabled = SMAppService.mainApp.status == .enabled
diff --git a/Packages/OpenStatsKit/Sources/OpenStatsUI/State/AppSettings.swift b/Packages/OpenStatsKit/Sources/OpenStatsUI/State/AppSettings.swift
index 64979db..8e427de 100644
--- a/Packages/OpenStatsKit/Sources/OpenStatsUI/State/AppSettings.swift
+++ b/Packages/OpenStatsKit/Sources/OpenStatsUI/State/AppSettings.swift
@@ -390,6 +390,13 @@ public final class AppSettings {
     public var alertCPUTemperature: Int {
         didSet { defaults.set(alertCPUTemperature, forKey: Keys.alertCPUTemperature) }
     }
+    /// 全局快捷键
+    public var hotKeys: [HotKeyAction: HotKey] {
+        didSet {
+            let stored = Dictionary(uniqueKeysWithValues: hotKeys.map { ($0.key.rawValue, $0.value) })
+            defaults.set(try? JSONEncoder().encode(stored), forKey: Keys.hotKeys)
+        }
+    }
     /// 每分钟把主要指标写入本机历史库
     public var historyEnabled: Bool {
         didSet { defaults.set(historyEnabled, forKey: Keys.historyEnabled) }
@@ -443,6 +450,10 @@ public final class AppSettings {
         geoAutoUpdate = defaults.object(forKey: Keys.geoAutoUpdate) as? Bool ?? true
         autoCheckUpdates = defaults.object(forKey: Keys.autoCheckUpdates) as? Bool ?? true
         historyEnabled = defaults.object(forKey: Keys.historyEnabled) as? Bool ?? true
+        let storedHotKeys = defaults.data(forKey: Keys.hotKeys).flatMap { try? JSONDecoder().decode([String: HotKey].self, from: $0) } ?? [:]
+        hotKeys = Dictionary(uniqueKeysWithValues: storedHotKeys.compactMap { key, value in
+            HotKeyAction(rawValue: key).map { ($0, value) }
+        })
         enabledAlerts = Set(defaults.stringArray(forKey: Keys.enabledAlerts)?.compactMap(AlertKind.init(rawValue:)) ?? [])
         alertCPUTemperature = Self.alertTemperatureOptions.contains(defaults.integer(forKey: Keys.alertCPUTemperature))
             ? defaults.integer(forKey: Keys.alertCPUTemperature) : 95
@@ -498,6 +509,7 @@ public final class AppSettings {
         static let geoAutoUpdate = "geoAutoUpdate"
         static let autoCheckUpdates = "autoCheckUpdates"
         static let historyEnabled = "historyEnabled"
+        static let hotKeys = "hotKeys"
         static let enabledAlerts = "enabledAlerts"
         static let alertCPUTemperature = "alertCPUTemperature"
     }
diff --git a/Packages/OpenStatsKit/Tests/OpenStatsUITests/OpenStatsUITests.swift b/Packages/OpenStatsKit/Tests/OpenStatsUITests/OpenStatsUITests.swift
index e231d88..6ce8b00 100644
--- a/Packages/OpenStatsKit/Tests/OpenStatsUITests/OpenStatsUITests.swift
+++ b/Packages/OpenStatsKit/Tests/OpenStatsUITests/OpenStatsUITests.swift
@@ -225,3 +225,28 @@ private func isolatedDefaults() -> UserDefaults {
         #expect(Set(AlertKind.allCases.map(\.tab)).isSubset(of: Set(PanelTab.allCases)))
     }
 }
+
+@Suite struct HotKeyTests {
+    @Test func displaysAndValidates() {
+        let hotKey = HotKey(keyCode: 1, modifiers: [.command, .option, .capsLock], key: "s")
+        #expect(hotKey.display == "⌥⌘S")
+        #expect(hotKey.isValid)
+        #expect(!HotKey(keyCode: 1, modifiers: [.shift], key: "s").isValid)
+        #expect(HotKey(keyCode: 49, modifiers: [.control], key: " ").display == "⌃空格")
+    }
+
+    @MainActor
+    @Test func persistsBindings() {
+        let defaults = isolatedDefaults()
+        let settings = AppSettings(defaults: defaults)
+        settings.hotKeys[.toggleKeepAwake] = HotKey(keyCode: 40, modifiers: [.command, .shift], key: "k")
+        let reloaded = AppSettings(defaults: defaults)
+        #expect(reloaded.hotKeys[.toggleKeepAwake]?.display == "⇧⌘K")
+    }
+}
+
+@Suite struct FunctionKeyTests {
+    @Test func namesFunctionKeys() {
+        #expect(HotKey(keyCode: 0x7A, modifiers: [.command], key: "\u{F704}").display == "⌘F1")
+    }
+}