diff --git a/src/components/appearance-provider.tsx b/src/components/appearance-provider.tsx
index 4cdebc977..5b2d85481 100644
--- a/src/components/appearance-provider.tsx
+++ b/src/components/appearance-provider.tsx
@@ -15,6 +15,7 @@ import {
   ZOOM_LEVELS,
   DEFAULT_ZOOM_LEVEL,
   type ZoomLevel,
+  stepZoom,
 } from "@/lib/theme-presets"
 import {
   resolveFontStack,
@@ -65,7 +66,11 @@ import {
   type CustomThemeToken,
 } from "@/lib/custom-style"
 import { useShortcutSettings } from "@/hooks/use-shortcut-settings"
-import { matchShortcutEvent } from "@/lib/keyboard-shortcuts"
+import {
+  isShortcutRecorderArmed,
+  matchShortcutEvent,
+  resolveWindowZoomAction,
+} from "@/lib/keyboard-shortcuts"
 import {
   DEFAULT_WORKSPACE_BG_ENABLED,
   DEFAULT_WORKSPACE_BG_MASK_OPACITY,
@@ -472,6 +477,10 @@ export function AppearanceProvider({
     syncTrafficLightPosition(zoom)
     persist(STORAGE_KEY_ZOOM_LEVEL, String(zoom))
   }, [])
+  const zoomLevelRef = useRef(zoomLevel)
+  useEffect(() => {
+    zoomLevelRef.current = zoomLevel
+  }, [zoomLevel])
 
   const setShowWelcomeQuickActions = useCallback((on: boolean) => {
     setShowWelcomeQuickActionsState(on)
@@ -744,6 +753,9 @@ export function AppearanceProvider({
   // 或某个组件吞掉了冒泡，这一路依然能把自定义样式整体停用。
   const { shortcuts } = useShortcutSettings()
   const toggleCustomStyleShortcut = shortcuts.toggle_custom_style
+  const zoomInShortcut = shortcuts.zoom_in
+  const zoomOutShortcut = shortcuts.zoom_out
+  const zoomResetShortcut = shortcuts.zoom_reset
   useEffect(() => {
     if (!toggleCustomStyleShortcut) return
     const onKeyDown = (event: KeyboardEvent) => {
@@ -756,6 +768,44 @@ export function AppearanceProvider({
     return () => window.removeEventListener("keydown", onKeyDown, true)
   }, [toggleCustomStyleShortcut, customStyleSuspended, setCustomStyleSuspended])
 
+  // Same levels as Settings → Window zoom. Capture-phase so the webview
+  // does not eat Ctrl/Cmd +/- as its own page zoom.
+  useEffect(() => {
+    const onKeyDown = (event: KeyboardEvent) => {
+      if (event.isComposing) return
+      if (isShortcutRecorderArmed()) return
+      if (
+        event.target instanceof Element &&
+        event.target.closest('[data-terminal-panel-region="true"]')
+      ) {
+        return
+      }
+
+      const action = resolveWindowZoomAction(event, {
+        zoom_in: zoomInShortcut,
+        zoom_out: zoomOutShortcut,
+        zoom_reset: zoomResetShortcut,
+      })
+      if (!action) return
+
+      // Match first, then preventDefault, including on repeats. A held
+      // key should walk the zoom levels, and in the browser the un-
+      // prevented repeat would also trigger the page's own zoom.
+      event.preventDefault()
+      if (action === "in") {
+        setZoomLevel(stepZoom(zoomLevelRef.current, 1))
+        return
+      }
+      if (action === "out") {
+        setZoomLevel(stepZoom(zoomLevelRef.current, -1))
+        return
+      }
+      setZoomLevel(DEFAULT_ZOOM_LEVEL)
+    }
+    window.addEventListener("keydown", onKeyDown, true)
+    return () => window.removeEventListener("keydown", onKeyDown, true)
+  }, [setZoomLevel, zoomInShortcut, zoomOutShortcut, zoomResetShortcut])
+
   // 跨标签页同步：用户在另一个窗口改了设置时，本窗口实时跟进
   useEffect(() => {
     const FONT_KEYS = new Set<string>([
diff --git a/src/components/settings/shortcut-settings.tsx b/src/components/settings/shortcut-settings.tsx
index 97b3dfd9f..b928160d3 100644
--- a/src/components/settings/shortcut-settings.tsx
+++ b/src/components/settings/shortcut-settings.tsx
@@ -12,6 +12,7 @@ import {
   SHORTCUT_DEFINITIONS,
   type ShortcutActionId,
   formatShortcutLabel,
+  setShortcutRecorderArmed,
   shortcutFromKeyboardEvent,
 } from "@/lib/keyboard-shortcuts"
 import { Button } from "@/components/ui/button"
@@ -53,6 +54,11 @@ export function ShortcutSettings() {
     [shortcuts]
   )
 
+  useEffect(() => {
+    setShortcutRecorderArmed(Boolean(recordingAction))
+    return () => setShortcutRecorderArmed(false)
+  }, [recordingAction])
+
   useEffect(() => {
     if (!recordingAction) return
 
@@ -60,6 +66,7 @@ export function ShortcutSettings() {
       if (event.repeat) return
       event.preventDefault()
       event.stopPropagation()
+      event.stopImmediatePropagation()
 
       if (event.key === "Escape") {
         setRecordingAction(null)
diff --git a/src/i18n/messages/ar.json b/src/i18n/messages/ar.json
index f436b8c6d..f9f5fcbc4 100644
--- a/src/i18n/messages/ar.json
+++ b/src/i18n/messages/ar.json
@@ -146,7 +146,7 @@
     },
     "zoomLevel": {
       "sectionTitle": "تكبير النافذة",
-      "sectionDescription": "تكبير أو تصغير الواجهة بالكامل. يتم تطبيقه فوراً ويُحفظ لكل جهاز على حدة.",
+      "sectionDescription": "تكبير أو تصغير الواجهة بالكامل. يتم تطبيقه فوراً ويُحفظ لكل جهاز على حدة. ⌘/Ctrl + و - ينتقلان بين نفس مستويات التكبير في هذه القائمة (⌘/Ctrl 0 يعيد الضبط إلى 100%).",
       "placeholder": "اختر مستوى التكبير",
       "default": "افتراضي",
       "current": "التكبير الحالي: {zoom}%"
@@ -429,6 +429,18 @@
       "toggle_custom_style": {
         "title": "إيقاف/استئناف النمط المخصص",
         "description": "مخرج طوارئ: يوقف كل الألوان المخصصة وCSS، ويعيد تفعيلها"
+      },
+      "zoom_in": {
+        "title": "تكبير",
+        "description": "اجعل النافذة أكبر بدرجة واحدة"
+      },
+      "zoom_out": {
+        "title": "تصغير",
+        "description": "اجعل النافذة أصغر بدرجة واحدة"
+      },
+      "zoom_reset": {
+        "title": "إعادة ضبط التكبير",
+        "description": "أعد تكبير النافذة إلى 100%"
       }
     }
   },
diff --git a/src/i18n/messages/de.json b/src/i18n/messages/de.json
index 6d0a5bec3..e3ea234e0 100644
--- a/src/i18n/messages/de.json
+++ b/src/i18n/messages/de.json
@@ -146,7 +146,7 @@
     },
     "zoomLevel": {
       "sectionTitle": "Fensterzoom",
-      "sectionDescription": "Skaliert die gesamte Oberfläche. Wird sofort übernommen und pro Gerät gespeichert.",
+      "sectionDescription": "Skaliert die gesamte Oberfläche. Wird sofort übernommen und pro Gerät gespeichert. ⌘/Ctrl + und - durchlaufen dieselben Zoomstufen wie dieses Menü (⌘/Ctrl 0 setzt auf 100% zurück).",
       "placeholder": "Zoomstufe wählen",
       "default": "Standard",
       "current": "Aktueller Zoom: {zoom}%"
@@ -429,6 +429,18 @@
       "toggle_custom_style": {
         "title": "Eigenen Stil aussetzen/fortsetzen",
         "description": "Notausstieg: schaltet alle eigenen Farben und CSS aus und wieder ein"
+      },
+      "zoom_in": {
+        "title": "Vergrößern",
+        "description": "Das Fenster eine Stufe größer machen"
+      },
+      "zoom_out": {
+        "title": "Verkleinern",
+        "description": "Das Fenster eine Stufe kleiner machen"
+      },
+      "zoom_reset": {
+        "title": "Zoom zurücksetzen",
+        "description": "Fensterzoom auf 100% zurücksetzen"
       }
     }
   },
diff --git a/src/i18n/messages/en.json b/src/i18n/messages/en.json
index b7076662e..2973ab308 100644
--- a/src/i18n/messages/en.json
+++ b/src/i18n/messages/en.json
@@ -146,7 +146,7 @@
     },
     "zoomLevel": {
       "sectionTitle": "Window zoom",
-      "sectionDescription": "Scale the entire interface. Applies immediately and persists per device.",
+      "sectionDescription": "Scale the entire interface. Applies immediately and persists per device. ⌘/Ctrl + and - move through the same zoom levels as this menu (⌘/Ctrl 0 resets to 100%).",
       "placeholder": "Select zoom level",
       "default": "Default",
       "current": "Current zoom: {zoom}%"
@@ -429,6 +429,18 @@
       "toggle_custom_style": {
         "title": "Suspend/resume custom style",
         "description": "Escape hatch: turns all custom colors and CSS off, and back on"
+      },
+      "zoom_in": {
+        "title": "Zoom in",
+        "description": "Make the window one step larger"
+      },
+      "zoom_out": {
+        "title": "Zoom out",
+        "description": "Make the window one step smaller"
+      },
+      "zoom_reset": {
+        "title": "Reset zoom",
+        "description": "Set the window zoom back to 100%"
       }
     }
   },
diff --git a/src/i18n/messages/es.json b/src/i18n/messages/es.json
index 21ca17fa8..bff3c5c68 100644
--- a/src/i18n/messages/es.json
+++ b/src/i18n/messages/es.json
@@ -146,7 +146,7 @@
     },
     "zoomLevel": {
       "sectionTitle": "Zoom de ventana",
-      "sectionDescription": "Escala toda la interfaz. Se aplica al instante y se guarda por dispositivo.",
+      "sectionDescription": "Escala toda la interfaz. Se aplica al instante y se guarda por dispositivo. ⌘/Ctrl + y - recorren los mismos niveles de zoom que este menú (⌘/Ctrl 0 vuelve al 100%).",
       "placeholder": "Selecciona el nivel de zoom",
       "default": "Predeterminado",
       "current": "Zoom actual: {zoom}%"
@@ -429,6 +429,18 @@
       "toggle_custom_style": {
         "title": "Suspender/reanudar estilo personalizado",
         "description": "Vía de escape: desactiva todos los colores y el CSS personalizados, y los vuelve a activar"
+      },
+      "zoom_in": {
+        "title": "Acercar",
+        "description": "Amplía la ventana un nivel"
+      },
+      "zoom_out": {
+        "title": "Alejar",
+        "description": "Reduce la ventana un nivel"
+      },
+      "zoom_reset": {
+        "title": "Restablecer zoom",
+        "description": "Restaura el zoom de la ventana al 100%"
       }
     }
   },
diff --git a/src/i18n/messages/fr.json b/src/i18n/messages/fr.json
index 692b556a8..a3a0e3e8c 100644
--- a/src/i18n/messages/fr.json
+++ b/src/i18n/messages/fr.json
@@ -146,7 +146,7 @@
     },
     "zoomLevel": {
       "sectionTitle": "Zoom de la fenêtre",
-      "sectionDescription": "Met à l'échelle toute l'interface. S'applique immédiatement et est enregistré par appareil.",
+      "sectionDescription": "Met à l'échelle toute l'interface. S'applique immédiatement et est enregistré par appareil. ⌘/Ctrl + et - parcourent les mêmes niveaux de zoom que ce menu (⌘/Ctrl 0 rétablit 100%).",
       "placeholder": "Sélectionnez le niveau de zoom",
       "default": "Par défaut",
       "current": "Zoom actuel : {zoom}%"
@@ -429,6 +429,18 @@
       "toggle_custom_style": {
         "title": "Suspendre/réactiver le style personnalisé",
         "description": "Issue de secours : désactive toutes les couleurs et le CSS personnalisés, puis les réactive"
+      },
+      "zoom_in": {
+        "title": "Zoom avant",
+        "description": "Agrandit la fenêtre d'un cran"
+      },
+      "zoom_out": {
+        "title": "Zoom arrière",
+        "description": "Réduit la fenêtre d'un cran"
+      },
+      "zoom_reset": {
+        "title": "Réinitialiser le zoom",
+        "description": "Remet le zoom de la fenêtre à 100%"
       }
     }
   },
diff --git a/src/i18n/messages/ja.json b/src/i18n/messages/ja.json
index 24b77626a..95119b3ef 100644
--- a/src/i18n/messages/ja.json
+++ b/src/i18n/messages/ja.json
@@ -146,7 +146,7 @@
     },
     "zoomLevel": {
       "sectionTitle": "ウィンドウズーム",
-      "sectionDescription": "インターフェイス全体を拡大・縮小します。すぐに反映され、デバイスごとに保存されます。",
+      "sectionDescription": "インターフェイス全体を拡大・縮小します。すぐに反映され、デバイスごとに保存されます。⌘/Ctrl + と - で、このメニューと同じ段階で拡大縮小します（⌘/Ctrl 0 で 100% に戻します）。",
       "placeholder": "ズームレベルを選択",
       "default": "デフォルト",
       "current": "現在のズーム：{zoom}%"
@@ -429,6 +429,18 @@
       "toggle_custom_style": {
         "title": "カスタムスタイルの停止/再開",
         "description": "緊急脱出用: カスタム配色と CSS をすべてオフにし、再度押すと元に戻します"
+      },
+      "zoom_in": {
+        "title": "拡大",
+        "description": "ウィンドウの表示倍率を一段階上げます"
+      },
+      "zoom_out": {
+        "title": "縮小",
+        "description": "ウィンドウの表示倍率を一段階下げます"
+      },
+      "zoom_reset": {
+        "title": "ズームをリセット",
+        "description": "ウィンドウのズームを 100% に戻します"
       }
     }
   },
diff --git a/src/i18n/messages/ko.json b/src/i18n/messages/ko.json
index e76fe0b77..07facb3c1 100644
--- a/src/i18n/messages/ko.json
+++ b/src/i18n/messages/ko.json
@@ -146,7 +146,7 @@
     },
     "zoomLevel": {
       "sectionTitle": "창 확대/축소",
-      "sectionDescription": "전체 인터페이스를 확대하거나 축소합니다. 즉시 적용되며 장치별로 저장됩니다.",
+      "sectionDescription": "전체 인터페이스를 확대하거나 축소합니다. 즉시 적용되며 장치별로 저장됩니다. ⌘/Ctrl +와 -는 이 메뉴와 같은 단계로 확대/축소합니다(⌘/Ctrl 0은 100%로 되돌립니다).",
       "placeholder": "확대/축소 단계 선택",
       "default": "기본값",
       "current": "현재 확대/축소: {zoom}%"
@@ -429,6 +429,18 @@
       "toggle_custom_style": {
         "title": "사용자 지정 스타일 중지/재개",
         "description": "비상 탈출구: 모든 사용자 지정 색상과 CSS를 끄고, 다시 누르면 되돌립니다"
+      },
+      "zoom_in": {
+        "title": "확대",
+        "description": "창을 한 단계 더 크게 만듭니다"
+      },
+      "zoom_out": {
+        "title": "축소",
+        "description": "창을 한 단계 더 작게 만듭니다"
+      },
+      "zoom_reset": {
+        "title": "확대/축소 초기화",
+        "description": "창 확대/축소를 100%로 되돌립니다"
       }
     }
   },
diff --git a/src/i18n/messages/pt.json b/src/i18n/messages/pt.json
index 6ece222b0..598b4d8a7 100644
--- a/src/i18n/messages/pt.json
+++ b/src/i18n/messages/pt.json
@@ -146,7 +146,7 @@
     },
     "zoomLevel": {
       "sectionTitle": "Zoom da janela",
-      "sectionDescription": "Dimensiona toda a interface. Aplica imediatamente e é salvo por dispositivo.",
+      "sectionDescription": "Dimensiona toda a interface. Aplica imediatamente e é salvo por dispositivo. ⌘/Ctrl + e - percorrem os mesmos níveis de zoom deste menu (⌘/Ctrl 0 volta para 100%).",
       "placeholder": "Selecione o nível de zoom",
       "default": "Padrão",
       "current": "Zoom atual: {zoom}%"
@@ -429,6 +429,18 @@
       "toggle_custom_style": {
         "title": "Suspender/retomar estilo personalizado",
         "description": "Saída de emergência: desliga todas as cores e o CSS personalizados e volta a ligá-los"
+      },
+      "zoom_in": {
+        "title": "Aumentar zoom",
+        "description": "Aumenta a janela em um nível"
+      },
+      "zoom_out": {
+        "title": "Diminuir zoom",
+        "description": "Diminui a janela em um nível"
+      },
+      "zoom_reset": {
+        "title": "Redefinir zoom",
+        "description": "Restaura o zoom da janela para 100%"
       }
     }
   },
diff --git a/src/i18n/messages/zh-CN.json b/src/i18n/messages/zh-CN.json
index e62f6d74c..eaba3aa31 100644
--- a/src/i18n/messages/zh-CN.json
+++ b/src/i18n/messages/zh-CN.json
@@ -146,7 +146,7 @@
     },
     "zoomLevel": {
       "sectionTitle": "窗口缩放",
-      "sectionDescription": "整体放大或缩小界面，立即生效，按设备分别保存。",
+      "sectionDescription": "整体放大或缩小界面，立即生效，按设备分别保存。⌘/Ctrl + 和 - 按与此菜单相同的档位调节（⌘/Ctrl 0 恢复为 100%）。",
       "placeholder": "请选择缩放档位",
       "default": "默认",
       "current": "当前缩放：{zoom}%"
@@ -429,6 +429,18 @@
       "toggle_custom_style": {
         "title": "停用/恢复自定义样式",
         "description": "逃生舱：一键关闭全部自定义配色与 CSS，再按一次恢复"
+      },
+      "zoom_in": {
+        "title": "放大",
+        "description": "把窗口缩放提高一档"
+      },
+      "zoom_out": {
+        "title": "缩小",
+        "description": "把窗口缩放降低一档"
+      },
+      "zoom_reset": {
+        "title": "重置缩放",
+        "description": "把窗口缩放恢复为 100%"
       }
     }
   },
diff --git a/src/i18n/messages/zh-TW.json b/src/i18n/messages/zh-TW.json
index e6283cf66..3f1d2556b 100644
--- a/src/i18n/messages/zh-TW.json
+++ b/src/i18n/messages/zh-TW.json
@@ -146,7 +146,7 @@
     },
     "zoomLevel": {
       "sectionTitle": "視窗縮放",
-      "sectionDescription": "整體放大或縮小介面，立即生效，依裝置分別儲存。",
+      "sectionDescription": "整體放大或縮小介面，立即生效，依裝置分別儲存。⌘/Ctrl + 和 - 依與此選單相同的檔位調節（⌘/Ctrl 0 恢復為 100%）。",
       "placeholder": "請選擇縮放檔位",
       "default": "預設",
       "current": "目前縮放：{zoom}%"
@@ -429,6 +429,18 @@
       "toggle_custom_style": {
         "title": "停用/恢復自訂樣式",
         "description": "逃生艙：一鍵關閉全部自訂配色與 CSS，再按一次恢復"
+      },
+      "zoom_in": {
+        "title": "放大",
+        "description": "把視窗縮放提高一檔"
+      },
+      "zoom_out": {
+        "title": "縮小",
+        "description": "把視窗縮放降低一檔"
+      },
+      "zoom_reset": {
+        "title": "重設縮放",
+        "description": "把視窗縮放恢復為 100%"
       }
     }
   },
diff --git a/src/lib/appearance-script.ts b/src/lib/appearance-script.ts
index a0bcf4d21..0ad7d1866 100644
--- a/src/lib/appearance-script.ts
+++ b/src/lib/appearance-script.ts
@@ -83,7 +83,7 @@ const SCRIPT = `
 (function() {
   try {
     var VALID_COLORS = ["neutral","zinc","slate","stone","gray","red","rose","orange","green","blue","yellow","violet"];
-    var VALID_ZOOMS = [80, 90, 100, 110, 125, 150];
+    var VALID_ZOOMS = [80, 90, 100, 110, 125, 150, 175, 200, 250, 300];
 
     var storedColor = localStorage.getItem("${STORAGE_KEY_THEME_COLOR}");
     var color = VALID_COLORS.indexOf(storedColor) >= 0 ? storedColor : "neutral";
diff --git a/src/lib/keyboard-shortcuts.test.ts b/src/lib/keyboard-shortcuts.test.ts
index d32d86949..a47ee8a98 100644
--- a/src/lib/keyboard-shortcuts.test.ts
+++ b/src/lib/keyboard-shortcuts.test.ts
@@ -3,7 +3,10 @@ import { describe, expect, it } from "vitest"
 import {
   DEFAULT_SHORTCUTS,
   SHORTCUT_DEFINITIONS,
+  formatShortcutLabel,
   matchShortcutEvent,
+  normalizeShortcut,
+  resolveWindowZoomAction,
   shortcutFromKeyboardEvent,
 } from "./keyboard-shortcuts"
 
@@ -117,3 +120,121 @@ describe("alt combinations use event.code", () => {
     ).toBe(true)
   })
 })
+
+const defaultZoom = {
+  zoom_in: DEFAULT_SHORTCUTS.zoom_in,
+  zoom_out: DEFAULT_SHORTCUTS.zoom_out,
+  zoom_reset: DEFAULT_SHORTCUTS.zoom_reset,
+}
+
+describe("window zoom shortcuts", () => {
+  it("registers zoom_in / zoom_out / zoom_reset defaults", () => {
+    const ids = SHORTCUT_DEFINITIONS.map((definition) => definition.id)
+    expect(ids).toContain("zoom_in")
+    expect(ids).toContain("zoom_out")
+    expect(ids).toContain("zoom_reset")
+    expect(DEFAULT_SHORTCUTS.zoom_in).toBe("mod+=")
+    expect(DEFAULT_SHORTCUTS.zoom_out).toBe("mod+-")
+    expect(DEFAULT_SHORTCUTS.zoom_reset).toBe("mod+0")
+  })
+
+  it("lets + survive normalize so Ctrl/Cmd Shift = can be recorded", () => {
+    expect(normalizeShortcut("mod++")).toBe("mod++")
+    expect(normalizeShortcut("mod+shift++")).toBe("mod+shift++")
+    expect(
+      shortcutFromKeyboardEvent(
+        keyEvent("+", { ctrlKey: true, shiftKey: true })
+      )
+    ).toBe("mod+shift++")
+    expect(formatShortcutLabel("mod++", false)).toBe("Ctrl++")
+    expect(formatShortcutLabel("mod++", true)).toBe("⌘+")
+  })
+
+  it("treats = and + as the same physical key on the bound zoom-in shortcut", () => {
+    expect(matchShortcutEvent(keyEvent("=", { ctrlKey: true }), "mod+=")).toBe(
+      true
+    )
+    expect(
+      matchShortcutEvent(
+        keyEvent("+", { ctrlKey: true, shiftKey: true }),
+        "mod+="
+      )
+    ).toBe(true)
+    expect(matchShortcutEvent(keyEvent("k", { ctrlKey: true }), "mod+=")).toBe(
+      false
+    )
+  })
+
+  it("treats - and _ as the same physical key on the bound zoom-out shortcut", () => {
+    expect(matchShortcutEvent(keyEvent("-", { ctrlKey: true }), "mod+-")).toBe(
+      true
+    )
+    expect(
+      matchShortcutEvent(
+        keyEvent("_", { ctrlKey: true, shiftKey: true }),
+        "mod+-"
+      )
+    ).toBe(true)
+    expect(matchShortcutEvent(keyEvent("=", { ctrlKey: true }), "mod+-")).toBe(
+      false
+    )
+  })
+
+  it("follows a remapped zoom-in binding and ignores the old default", () => {
+    const remapped = {
+      ...defaultZoom,
+      zoom_in: "mod+shift+z",
+    }
+    expect(
+      resolveWindowZoomAction(
+        keyEvent("z", { ctrlKey: true, shiftKey: true }),
+        remapped
+      )
+    ).toBe("in")
+    expect(
+      resolveWindowZoomAction(keyEvent("=", { ctrlKey: true }), remapped)
+    ).toBeNull()
+    expect(
+      resolveWindowZoomAction(
+        keyEvent("+", { ctrlKey: true, shiftKey: true }),
+        remapped
+      )
+    ).toBeNull()
+  })
+
+  it("still matches a repeat of the bound zoom key", () => {
+    expect(
+      resolveWindowZoomAction(keyEvent("=", { ctrlKey: true }), defaultZoom)
+    ).toBe("in")
+    expect(
+      resolveWindowZoomAction(keyEvent("-", { ctrlKey: true }), defaultZoom)
+    ).toBe("out")
+    expect(
+      resolveWindowZoomAction(keyEvent("0", { ctrlKey: true }), defaultZoom)
+    ).toBe("reset")
+  })
+
+  it("does not treat AZERTY Ctrl+) as zoom out just because code is Minus", () => {
+    expect(
+      matchShortcutEvent(
+        keyEvent(")", { ctrlKey: true, code: "Minus" }),
+        "mod+-"
+      )
+    ).toBe(false)
+  })
+
+  it("still matches numpad + / - against the default zoom bindings", () => {
+    expect(
+      matchShortcutEvent(
+        keyEvent("Add", { ctrlKey: true, code: "NumpadAdd" }),
+        "mod+="
+      )
+    ).toBe(true)
+    expect(
+      matchShortcutEvent(
+        keyEvent("Subtract", { ctrlKey: true, code: "NumpadSubtract" }),
+        "mod+-"
+      )
+    ).toBe(true)
+  })
+})
diff --git a/src/lib/keyboard-shortcuts.ts b/src/lib/keyboard-shortcuts.ts
index 342995d88..0dd2b185e 100644
--- a/src/lib/keyboard-shortcuts.ts
+++ b/src/lib/keyboard-shortcuts.ts
@@ -15,6 +15,9 @@ export type ShortcutActionId =
   | "send_message"
   | "newline_in_message"
   | "toggle_custom_style"
+  | "zoom_in"
+  | "zoom_out"
+  | "zoom_reset"
 
 export interface ShortcutDefinition {
   id: ShortcutActionId
@@ -69,6 +72,15 @@ export const SHORTCUT_DEFINITIONS: ShortcutDefinition[] = [
   {
     id: "toggle_custom_style",
   },
+  {
+    id: "zoom_in",
+  },
+  {
+    id: "zoom_out",
+  },
+  {
+    id: "zoom_reset",
+  },
 ]
 
 /** Actions that allow shortcuts without modifier keys (e.g. plain Enter). */
@@ -98,6 +110,11 @@ export const DEFAULT_SHORTCUTS: ShortcutSettings = {
   // 自定义样式的逃生舱：用户把界面改到不可用时，这一路必须仍然按得动，所以选一个
   // 三修饰键组合（不会与任何常用操作撞车），并在捕获阶段监听。
   toggle_custom_style: "mod+alt+shift+s",
+  // Same rungs as Settings → Window zoom. `=` is what US keyboards fire for
+  // Ctrl/+ without Shift; `+` is Shift+= and the numpad.
+  zoom_in: "mod+=",
+  zoom_out: "mod+-",
+  zoom_reset: "mod+0",
 }
 
 export const SHORTCUTS_STORAGE_KEY = "settings:shortcuts:v1"
@@ -117,6 +134,40 @@ const SPECIAL_KEY_ALIASES: Record<string, string> = {
   right: "arrowright",
 }
 
+/**
+ * `=`/`+` and `-`/`_` are the same physical key (unshifted vs shifted).
+ * Bindings on one should also fire for the other; extra Shift is ignored
+ * only for these pairs, because Shift is how you type the sibling.
+ */
+const PHYSICAL_KEY_SIBLINGS: Record<string, string> = {
+  "=": "+",
+  "+": "=",
+  "-": "_",
+  _: "-",
+}
+
+export interface ParsedShortcut {
+  mod: boolean
+  alt: boolean
+  shift: boolean
+  key: string
+}
+
+/**
+ * Recording a shortcut in Settings and the global zoom listener are both
+ * capture handlers on `window`. `stopPropagation()` does not stop a sibling
+ * listener on the same target, so the recorder arms this flag instead.
+ */
+let shortcutRecorderArmed = false
+
+export function setShortcutRecorderArmed(armed: boolean): void {
+  shortcutRecorderArmed = armed
+}
+
+export function isShortcutRecorderArmed(): boolean {
+  return shortcutRecorderArmed
+}
+
 const KEY_LABELS: Record<string, string> = {
   space: "Space",
   escape: "Esc",
@@ -174,59 +225,77 @@ function normalizeSettings(input: unknown): ShortcutSettings {
   return next
 }
 
-export function normalizeShortcut(rawShortcut: string): string | null {
-  const parts = rawShortcut
-    .toLowerCase()
-    .split("+")
-    .map((part) => part.trim())
-    .filter(Boolean)
+/**
+ * Split a shortcut string without treating a trailing `+` key as a delimiter.
+ * `mod++` and `mod+shift++` are how Ctrl/Cmd+Shift+= serializes.
+ */
+export function parseShortcut(rawShortcut: string): ParsedShortcut | null {
+  const lowered = rawShortcut.toLowerCase().trim()
+  if (!lowered) return null
+
+  let keyRaw: string
+  let prefix: string
+  if (lowered === "+" || lowered.endsWith("++")) {
+    keyRaw = "+"
+    prefix = lowered === "+" ? "" : lowered.slice(0, -2)
+  } else {
+    const lastPlus = lowered.lastIndexOf("+")
+    if (lastPlus === -1) {
+      keyRaw = lowered
+      prefix = ""
+    } else {
+      keyRaw = lowered.slice(lastPlus + 1)
+      prefix = lowered.slice(0, lastPlus)
+    }
+  }
 
-  if (parts.length === 0) return null
+  const keyToken = normalizeKeyToken(keyRaw.trim())
+  if (!keyToken || MODIFIER_KEY_SET.has(keyToken)) return null
 
   let mod = false
   let alt = false
   let shift = false
-  let keyToken: string | null = null
-
-  for (const part of parts) {
-    if (
-      part === "mod" ||
-      part === "cmd" ||
-      part === "command" ||
-      part === "meta" ||
-      part === "ctrl" ||
-      part === "control"
-    ) {
-      mod = true
-      continue
+  if (prefix) {
+    const parts = prefix
+      .split("+")
+      .map((part) => part.trim())
+      .filter(Boolean)
+    for (const part of parts) {
+      if (
+        part === "mod" ||
+        part === "cmd" ||
+        part === "command" ||
+        part === "meta" ||
+        part === "ctrl" ||
+        part === "control"
+      ) {
+        mod = true
+        continue
+      }
+      if (part === "alt" || part === "option") {
+        alt = true
+        continue
+      }
+      if (part === "shift") {
+        shift = true
+        continue
+      }
+      return null
     }
-
-    if (part === "alt" || part === "option") {
-      alt = true
-      continue
-    }
-
-    if (part === "shift") {
-      shift = true
-      continue
-    }
-
-    if (keyToken) return null
-
-    const normalizedKey = normalizeKeyToken(part)
-    if (!normalizedKey || MODIFIER_KEY_SET.has(normalizedKey)) return null
-
-    keyToken = normalizedKey
   }
 
-  if (!keyToken) return null
+  return { mod, alt, shift, key: keyToken }
+}
 
-  const normalizedParts: string[] = []
-  if (mod) normalizedParts.push("mod")
-  if (alt) normalizedParts.push("alt")
-  if (shift) normalizedParts.push("shift")
-  normalizedParts.push(keyToken)
+export function normalizeShortcut(rawShortcut: string): string | null {
+  const parsed = parseShortcut(rawShortcut)
+  if (!parsed) return null
 
+  const normalizedParts: string[] = []
+  if (parsed.mod) normalizedParts.push("mod")
+  if (parsed.alt) normalizedParts.push("alt")
+  if (parsed.shift) normalizedParts.push("shift")
+  normalizedParts.push(parsed.key)
   return normalizedParts.join("+")
 }
 
@@ -306,31 +375,61 @@ export function shortcutFromKeyboardEvent(
   return parts.join("+")
 }
 
+function siblingKeys(keyToken: string): Set<string> {
+  const sibling = PHYSICAL_KEY_SIBLINGS[keyToken]
+  return sibling ? new Set([keyToken, sibling]) : new Set([keyToken])
+}
+
+function matchesNumpadCode(
+  event: ShortcutEventLike,
+  boundKey: string
+): boolean {
+  if (boundKey === "=" || boundKey === "+") {
+    return event.code === "NumpadAdd"
+  }
+  if (boundKey === "-" || boundKey === "_") {
+    return event.code === "NumpadSubtract"
+  }
+  return false
+}
+
 export function matchShortcutEvent(
   event: ShortcutEventLike,
   shortcut: string
 ): boolean {
-  const normalized = normalizeShortcut(shortcut)
-  if (!normalized) return false
-
-  const parts = normalized.split("+")
-  const keyToken = parts[parts.length - 1]
-  const needsMod = parts.includes("mod")
-  const needsAlt = parts.includes("alt")
-  const needsShift = parts.includes("shift")
+  const parsed = parseShortcut(shortcut)
+  if (!parsed) return false
 
+  const keys = siblingKeys(parsed.key)
   const actualKey = eventKeyToken(event)
-  if (!actualKey) return false
-  if (actualKey !== keyToken) return false
+  const matchesKey = actualKey !== null && keys.has(actualKey)
+  if (!matchesKey && !matchesNumpadCode(event, parsed.key)) return false
 
   const hasMod = event.metaKey || event.ctrlKey
-  if (hasMod !== needsMod) return false
-  if (event.altKey !== needsAlt) return false
-  if (event.shiftKey !== needsShift) return false
+  if (hasMod !== parsed.mod) return false
+  if (event.altKey !== parsed.alt) return false
+
+  // Extra Shift is how `=` becomes `+` (and `-` becomes `_`). Require Shift
+  // when the binding asked for it; ignore a surplus Shift only on those pairs.
+  if (parsed.shift) {
+    if (!event.shiftKey) return false
+  } else if (event.shiftKey && keys.size === 1) {
+    return false
+  }
 
   return true
 }
 
+export function resolveWindowZoomAction(
+  event: ShortcutEventLike,
+  shortcuts: Pick<ShortcutSettings, "zoom_in" | "zoom_out" | "zoom_reset">
+): "in" | "out" | "reset" | null {
+  if (matchShortcutEvent(event, shortcuts.zoom_in)) return "in"
+  if (matchShortcutEvent(event, shortcuts.zoom_out)) return "out"
+  if (matchShortcutEvent(event, shortcuts.zoom_reset)) return "reset"
+  return null
+}
+
 function toKeyLabel(keyToken: string): string {
   const common = KEY_LABELS[keyToken]
   if (common) return common
@@ -342,18 +441,15 @@ function toKeyLabel(keyToken: string): string {
 }
 
 export function formatShortcutLabel(shortcut: string, isMac: boolean): string {
-  const normalized = normalizeShortcut(shortcut)
-  if (!normalized) return shortcut
-
-  const parts = normalized.split("+")
-  const keyToken = parts[parts.length - 1]
+  const parsed = parseShortcut(shortcut)
+  if (!parsed) return shortcut
 
   const modifiers: string[] = []
-  if (parts.includes("mod")) modifiers.push(isMac ? "⌘" : "Ctrl")
-  if (parts.includes("alt")) modifiers.push(isMac ? "⌥" : "Alt")
-  if (parts.includes("shift")) modifiers.push(isMac ? "⇧" : "Shift")
+  if (parsed.mod) modifiers.push(isMac ? "⌘" : "Ctrl")
+  if (parsed.alt) modifiers.push(isMac ? "⌥" : "Alt")
+  if (parsed.shift) modifiers.push(isMac ? "⇧" : "Shift")
 
-  const keyLabel = toKeyLabel(keyToken)
+  const keyLabel = toKeyLabel(parsed.key)
 
   if (isMac) {
     return `${modifiers.join("")}${keyLabel}`
diff --git a/src/lib/theme-presets.test.ts b/src/lib/theme-presets.test.ts
new file mode 100644
index 000000000..467e1fd87
--- /dev/null
+++ b/src/lib/theme-presets.test.ts
@@ -0,0 +1,14 @@
+import { describe, expect, it } from "vitest"
+
+import { DEFAULT_ZOOM_LEVEL, stepZoom } from "./theme-presets"
+
+describe("stepZoom", () => {
+  it("walks the Settings rungs and stops at the ends", () => {
+    expect(stepZoom(100, 1)).toBe(110)
+    expect(stepZoom(110, -1)).toBe(100)
+    expect(stepZoom(80, -1)).toBe(80)
+    expect(stepZoom(150, 1)).toBe(175)
+    expect(stepZoom(300, 1)).toBe(300)
+    expect(stepZoom(DEFAULT_ZOOM_LEVEL, 1)).toBe(110)
+  })
+})
diff --git a/src/lib/theme-presets.ts b/src/lib/theme-presets.ts
index 2d8a9a2b1..30f109744 100644
--- a/src/lib/theme-presets.ts
+++ b/src/lib/theme-presets.ts
@@ -92,8 +92,18 @@ export const THEME_COLOR_PREVIEW: Record<ThemeColor, string> = {
  * 缩放档位（百分比）。100 是默认。
  * 选用离散档位而非连续滑块，是为了与现有 ThemeMode 选择器保持视觉一致。
  */
-export const ZOOM_LEVELS = [80, 90, 100, 110, 125, 150] as const
+export const ZOOM_LEVELS = [
+  80, 90, 100, 110, 125, 150, 175, 200, 250, 300,
+] as const
 
 export type ZoomLevel = (typeof ZOOM_LEVELS)[number]
 
 export const DEFAULT_ZOOM_LEVEL: ZoomLevel = 100
+
+/** Next discrete Settings zoom step. Stops at the first / last rung. */
+export function stepZoom(current: ZoomLevel, direction: 1 | -1): ZoomLevel {
+  const index = ZOOM_LEVELS.indexOf(current)
+  const from = index >= 0 ? index : ZOOM_LEVELS.indexOf(DEFAULT_ZOOM_LEVEL)
+  const next = Math.min(ZOOM_LEVELS.length - 1, Math.max(0, from + direction))
+  return ZOOM_LEVELS[next]
+}