diff --git a/FUTURE.md b/FUTURE.md
index fd55fb5..aa240e1 100644
--- a/FUTURE.md
+++ b/FUTURE.md
@@ -29,11 +29,42 @@
 - 快捷键自定义
 - 2x/4x/8x 多档位
 
-## P10 键盘/手柄导航 - 扩展
+## P10b 手柄导航 — 远期（Gamepad API）
 
-- Gamepad 震动反馈（手柄扳机键模拟选择"重量"）
-- 自定义键位映射界面
-- 手柄热插拔检测
+以下功能在 P10a 键盘导航完成后，作为手柄支持的第二期实现：
+
+### 手柄映射
+
+| 操作 | 手柄按键 |
+|------|----------|
+| 选项导航 | 左摇杆 / 方向键（↑↓←→） |
+| 确认 | A 键（Xbox）/ × 键（PS） |
+| 取消/菜单 | B 键（Xbox）/ ○ 键（PS） |
+| QTE 按键 | A/B/X/Y 自动映射到 QTE 定义的 keys 顺序 |
+| 跳过 | Start 键 |
+| 倍速 | LB / RB 循环 |
+
+### QTE 设备感知
+
+- 键盘连接时 QTE 提示显示键盘按键名称（空格、WASD）
+- 手柄连接时 QTE 提示自动切换为手柄按钮图标（A/B/X/Y + 方向图标）
+- `QTESystem` 升级：输入源切换 + 按键提示动态渲染
+
+### 视觉反馈
+
+- QTE Overlay 的中央圆圈根据设备动态渲染（键盘=方块内字母，手柄=圆形内图标）
+- 手柄连接后自动隐藏鼠标光标，`inputMode = 'gamepad'`
+- 手柄断连后自动恢复键盘模式，不再依赖手柄
+
+### 实现要点
+
+- [ ] `engine/systems/InputSystem.ts` 升级 — `gamepadconnected`/`gamepaddisconnected` 事件监听
+- [ ] Gamepad API 轮询（rAF 中 `navigator.getGamepads()` 读取摇杆/按键状态）
+- [ ] QTE 手柄映射逻辑：方向键/摇杆 → `keys[]` 中的方向匹配，按钮 → A/B/X/Y
+- [ ] `src/components/QTEOverlay.vue` 升级 — 根据 inputMode 渲染不同图标
+- [ ] 键位映射配置持久化（IndexedDB）
+- [ ] 手柄震动反馈（`GamepadHapticActuator.pulse()`）
+- [ ] 手柄热插拔检测 + 自动切换 inputMode
 
 ## P11 多语言字幕 - 扩展
 
diff --git a/ROADMAP.md b/ROADMAP.md
index ee55315..0b55ac1 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -532,18 +532,41 @@ GainNode 的 ramp 目标值 = `Math.min(bgmVolume, bgmDuckLevel × bgmVolume)`
 - [x] `public/scenes/demo.json` — `qte_success` / `qte_fail` 设 `skippable: false`
 - [x] 验证：TypeScript + Vite build 通过
 
-### P10 键盘/手柄导航（待实现）
+### P10a 键盘导航 — 方向键+确认键驱动全流程 ✅ 已完成 2026-06-09
 
-目标：支持纯键盘或手柄操作整个游戏流程（选择选项、确认、QTE、菜单），适配"躺沙发"体验。
+目标：支持纯键盘操作整个游戏流程（选项选择、确认、菜单），方向键/WASD 移动高亮、Enter/Space 确认、Esc 菜单。
+适配《底特律》《Telltale》级别的键盘交互体验。
+
+**核心设计（对标业界）：**
+
+| 设计点 | 做法 |
+|--------|------|
+| **输入范围** | 完整接管：选项导航、菜单导航、存档界面、章节选择 |
+| **视觉反馈** | 自定义高亮（发光边框/变色），和鼠标 hover 共用样式 |
+| **自动检测** | 检测到 keydown → 标记 `inputMode='keyboard'` → 显示焦点环；鼠标移动 → 恢复 `inputMode='mouse'` |
+| **QTE** | 本期不做 QTE 键位整合（QTE 仍直接监听 keydown），远期 P10b 处理 |
+
+**按键映射：**
+
+| 操作 | 按键 |
+|------|------|
+| 选项上移 | ↑ / W |
+| 选项下移 | ↓ / S |
+| 确认 | Enter / Space |
+| 菜单 | Esc |
+| 跳过 | 不变（按钮点击） |
+| 全屏 | 不变（按钮点击） |
 
 **实现清单：**
 
-- [ ] `engine/systems/InputSystem.ts` — 统一输入抽象层：键盘（方向键/WASD）+ 手柄（Gamepad API）+ 鼠标
-- [ ] 选项高亮导航：↑↓ 移动焦点，Enter/Space 确认，有视觉高亮指示器
-- [ ] QTE 键位整合到 InputSystem（目前 QTE 直接监听 `keydown`）
-- [ ] `src/components/ChoicePanel.vue` — 键盘焦点环样式（`focus-visible`）
-- [ ] `src/App.vue` — 菜单键（Esc 打开/关闭菜单）
-- [ ] 验证：纯键盘完成一次完整流程（开始→选择→QTE→存档→读档→结束）、手柄连接时自动切换
+- [x] `src/stores/gameStore.ts` — `inputMode` 状态（mouse/keyboard）+ `setInputMode` setter
+- [x] `src/App.vue` — 全局 keydown 监听（方向键/Enter/Space/Tab → keyboard 模式，Esc → 关闭菜单/章节）；mousemove → mouse 模式
+- [x] `src/components/ChoicePanel.vue` — 选项出现时 auto-focus 第一项；↑↓ 键导航焦点；Enter/Space 确认；`:focus-visible` 发光边框样式
+- [x] `src/components/ChapterSelect.vue` — ←→ 键在章节卡片间导航（跳过锁定章节）；Enter 选择；Esc/Backspace 返回；`:focus-visible` 高亮
+- [x] `src/components/SaveLoadMenu.vue` — `@keydown.escape` 关闭菜单
+- [x] 验证：TypeScript + Vite build 通过
+
+### P10b 手柄导航（远期 P10b）— 见 FUTURE.md
 
 ### P11 多语言字幕（待实现）
 
diff --git a/src/App.vue b/src/App.vue
index 28be430..72b3765 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { ref, watch } from 'vue'
+import { ref, watch, onMounted, onUnmounted } from 'vue'
 import GamePlayer from '@/components/GamePlayer.vue'
 import ChoicePanel from '@/components/ChoicePanel.vue'
 import QTEOverlay from '@/components/QTEOverlay.vue'
@@ -97,6 +97,37 @@ watch(() => store.currentScene?.id, async (newId) => {
   canSkip.value = await isSceneWatched(newId)
 })
 
+function onGlobalKeydown(e: KeyboardEvent) {
+  const key = e.key
+  if (key === 'ArrowDown' || key === 'ArrowUp' || key === 'ArrowLeft' || key === 'ArrowRight' ||
+      key === 'Enter' || key === ' ' || key === 'Tab' || key === 'w' || key === 'a' || key === 's' || key === 'd') {
+    store.setInputMode('keyboard')
+  }
+  if (key === 'Escape') {
+    if (showChapterSelect.value) {
+      showChapterSelect.value = false
+    } else if (showMenu.value) {
+      showMenu.value = false
+    }
+  }
+}
+
+function onGlobalMouseMove() {
+  store.setInputMode('mouse')
+}
+
+const keyboardKeys = ['ArrowDown', 'ArrowUp', 'ArrowLeft', 'ArrowRight', 'Enter', 'Tab', ' ', 'w', 'a', 's', 'd']
+
+onMounted(() => {
+  document.addEventListener('keydown', onGlobalKeydown)
+  document.addEventListener('mousemove', onGlobalMouseMove)
+})
+
+onUnmounted(() => {
+  document.removeEventListener('keydown', onGlobalKeydown)
+  document.removeEventListener('mousemove', onGlobalMouseMove)
+})
+
 init()
 </script>
 
diff --git a/src/components/ChapterSelect.vue b/src/components/ChapterSelect.vue
index 4a43d7b..7541d91 100644
--- a/src/components/ChapterSelect.vue
+++ b/src/components/ChapterSelect.vue
@@ -1,7 +1,8 @@
 <script setup lang="ts">
+import { ref, watch, nextTick } from 'vue'
 import type { ChapterInfo } from '@engine/types'
 
-defineProps<{
+const props = defineProps<{
   chapters: ChapterInfo[]
   unlockedIds: Set<string>
 }>()
@@ -10,20 +11,67 @@ const emit = defineEmits<{
   select: [chapterId: string]
   back: []
 }>()
+
+const focusIdx = ref(0)
+const cardRefs = ref<(HTMLDivElement | null)[]>([])
+
+function setRef(el: HTMLDivElement | null, i: number) {
+  cardRefs.value[i] = el
+}
+
+// when shown, focus first unlocked
+watch(() => props.chapters.length, async (len) => {
+  if (len > 0) {
+    const first = props.chapters.findIndex(ch => props.unlockedIds.has(ch.id))
+    focusIdx.value = first >= 0 ? first : 0
+    await nextTick()
+    cardRefs.value[focusIdx.value]?.focus()
+  }
+})
+
+function onKeydown(e: KeyboardEvent, index: number) {
+  if (e.key === 'ArrowRight' || e.key === 'ArrowLeft') {
+    e.preventDefault()
+    const dir = e.key === 'ArrowRight' ? 1 : -1
+    const len = props.chapters.length
+    let next = (index + dir + len) % len
+    // skip locked ones
+    let tries = 0
+    while (!props.unlockedIds.has(props.chapters[next].id) && tries < len) {
+      next = (next + dir + len) % len
+      tries++
+    }
+    focusIdx.value = next
+    cardRefs.value[next]?.focus()
+  }
+  if (e.key === 'Enter' || e.key === ' ') {
+    e.preventDefault()
+    if (props.unlockedIds.has(props.chapters[index].id)) {
+      emit('select', props.chapters[index].id)
+    }
+  }
+  if (e.key === 'Escape' || e.key === 'Backspace') {
+    e.preventDefault()
+    emit('back')
+  }
+}
 </script>
 
 <template>
-  <div class="chapter-overlay">
+  <div class="chapter-overlay" @keydown="(e: KeyboardEvent) => { if (e.key === 'Escape' || e.key === 'Backspace') { e.preventDefault(); emit('back'); } }">
     <div class="chapter-panel">
       <h2 class="chapter-title">章节选择</h2>
 
       <div class="chapter-grid">
         <div
-          v-for="ch in chapters"
+          v-for="(ch, i) in chapters"
           :key="ch.id"
+          :ref="(el: any) => setRef(el, i)"
           class="chapter-card"
           :class="{ locked: !unlockedIds.has(ch.id) }"
+          :tabindex="unlockedIds.has(ch.id) ? 0 : -1"
           @click="unlockedIds.has(ch.id) && emit('select', ch.id)"
+          @keydown="onKeydown($event, i)"
         >
           <div class="chapter-thumb">
             <img v-if="ch.thumbnail" :src="ch.thumbnail" class="thumb-img" />
@@ -34,7 +82,7 @@ const emit = defineEmits<{
         </div>
       </div>
 
-      <button class="back-btn" @click="emit('back')">返回</button>
+      <button class="back-btn" @click="emit('back')">返回 (Esc)</button>
     </div>
   </div>
 </template>
@@ -86,6 +134,7 @@ const emit = defineEmits<{
   cursor: pointer;
   transition: background 0.2s, border-color 0.2s, transform 0.15s;
   width: 150px;
+  outline: none;
 }
 
 .chapter-card:hover:not(.locked) {
@@ -94,6 +143,13 @@ const emit = defineEmits<{
   transform: translateY(-2px);
 }
 
+.chapter-card:focus-visible {
+  background: rgba(255, 255, 255, 0.12);
+  border-color: rgba(255, 255, 255, 0.4);
+  box-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
+  transform: translateY(-2px);
+}
+
 .chapter-card.locked {
   opacity: 0.4;
   cursor: default;
diff --git a/src/components/ChoicePanel.vue b/src/components/ChoicePanel.vue
index 3babcc5..2c6bda3 100644
--- a/src/components/ChoicePanel.vue
+++ b/src/components/ChoicePanel.vue
@@ -1,4 +1,5 @@
 <script setup lang="ts">
+import { ref, watch, nextTick, computed } from 'vue'
 import type { Choice } from '@engine/types'
 
 const props = defineProps<{
@@ -11,6 +12,9 @@ const emit = defineEmits<{
   choose: [index: number]
 }>()
 
+const focusIndex = ref(0)
+const btnRefs = ref<(HTMLButtonElement | null)[]>([])
+
 function timerPercent(): number {
   if (props.timerTotal <= 0) return 0
   return (props.timerRemaining / props.timerTotal) * 100
@@ -20,6 +24,32 @@ function timerClass(): string {
   if (props.timerRemaining <= 3) return 'danger'
   return ''
 }
+
+function setRef(el: HTMLButtonElement | null, index: number) {
+  btnRefs.value[index] = el
+}
+
+watch(() => props.choices.length, async (len) => {
+  if (len > 0) {
+    focusIndex.value = 0
+    await nextTick()
+    btnRefs.value[0]?.focus()
+  }
+})
+
+function onKeydown(e: KeyboardEvent, index: number) {
+  if (e.key === 'ArrowDown' || e.key === 'ArrowUp') {
+    e.preventDefault()
+    const dir = e.key === 'ArrowDown' ? 1 : -1
+    const next = Math.max(0, Math.min(props.choices.length - 1, index + dir))
+    focusIndex.value = next
+    btnRefs.value[next]?.focus()
+  }
+  if (e.key === 'Enter' || e.key === ' ') {
+    e.preventDefault()
+    emit('choose', index)
+  }
+}
 </script>
 
 <template>
@@ -37,8 +67,11 @@ function timerClass(): string {
       <button
         v-for="(choice, index) in choices"
         :key="index"
+        :ref="(el: any) => setRef(el, index)"
         class="choice-btn"
+        tabindex="0"
         @click="emit('choose', index)"
+        @keydown="onKeydown($event, index)"
       >
         {{ choice.text }}
       </button>
@@ -110,10 +143,17 @@ function timerClass(): string {
   border-radius: 4px;
   cursor: pointer;
   transition: background 0.2s, border-color 0.2s;
+  outline: none;
 }
 
 .choice-btn:hover {
   background: rgba(255, 255, 255, 0.25);
   border-color: rgba(255, 255, 255, 0.6);
 }
+
+.choice-btn:focus-visible {
+  background: rgba(255, 255, 255, 0.25);
+  border-color: rgba(255, 255, 255, 0.6);
+  box-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
+}
 </style>
diff --git a/src/components/SaveLoadMenu.vue b/src/components/SaveLoadMenu.vue
index 54c3331..34e93da 100644
--- a/src/components/SaveLoadMenu.vue
+++ b/src/components/SaveLoadMenu.vue
@@ -15,7 +15,7 @@ const maxSlots = 5
 </script>
 
 <template>
-  <div class="save-overlay" @click.self="emit('close')">
+  <div class="save-overlay" @click.self="emit('close')" @keydown.escape="emit('close')">
     <div class="save-panel">
       <h2 class="save-title">存档 / 读档</h2>
 
diff --git a/src/stores/gameStore.ts b/src/stores/gameStore.ts
index f24fdfc..efa7024 100644
--- a/src/stores/gameStore.ts
+++ b/src/stores/gameStore.ts
@@ -25,6 +25,7 @@ export const useGameStore = defineStore('game', () => {
   const videoTime = ref(0)
   const hotspots = ref<Hotspot[]>([])
   const isImageScene = ref(false)
+  const inputMode = ref<'mouse' | 'keyboard'>('mouse')
   const showChapterSelect = ref(false)
   const chapters = ref<ChapterInfo[]>([])
   const unlockedChapterIds = ref<Set<string>>(new Set())
@@ -104,6 +105,10 @@ export const useGameStore = defineStore('game', () => {
     isImageScene.value = val
   }
 
+  function setInputMode(mode: 'mouse' | 'keyboard') {
+    inputMode.value = mode
+  }
+
   function setChapters(list: ChapterInfo[]) {
     chapters.value = list
   }
@@ -137,10 +142,12 @@ export const useGameStore = defineStore('game', () => {
     currentScene, choices, gameEnded, timerTotal, timerRemaining, saves,
     qteActive, qteDef, qteTotal, qteRemaining, qteResult, videoTime,
     hotspots, isImageScene, showChapterSelect, chapters, unlockedChapterIds,
+    inputMode,
     setScene, setChoices, clearChoices, setGameEnded,
     setTimer, clearTimer, setSaves,
     showQTE, updateQTE, resolveQTE, clearQTE, setVideoTime,
     setHotspots, clearHotspots, setIsImageScene,
+    setInputMode,
     setChapters, setUnlockedChapters, addUnlockedChapter, setShowChapterSelect,
     dump,
   }