diff --git a/web/src/app/SettingsDialog.vue b/web/src/app/SettingsDialog.vue
index b332eea..919e3f6 100644
--- a/web/src/app/SettingsDialog.vue
+++ b/web/src/app/SettingsDialog.vue
@@ -6,7 +6,7 @@ import Icon, { type IconName } from './Icon.vue'
 import AppearanceSettings from './AppearanceSettings.vue'
 import PluginsPanel from './PluginsPanel.vue'
 import { installApp, installPrompt } from './pwa'
-import { CONTENT_WIDTHS, FONT_SIZES, TAB_SIZES, loadSettings, settings, updateSettings, type Settings } from './settings'
+import { CONTENT_WIDTHS, TAB_SIZES, loadSettings, settings, updateSettings, type Settings } from './settings'
 import SharePanel from './SharePanel.vue'
 import TokensPanel from './TokensPanel.vue'
 import TrashPanel from './TrashPanel.vue'
@@ -73,6 +73,17 @@ async function change(patch: Partial<Settings>) {
   }
 }
 
+function changeFont(event: Event) {
+  const input = event.target as HTMLInputElement
+  const value = input.valueAsNumber
+  if (!Number.isFinite(value) || value <= 0) {
+    toast('字号必须为正数')
+    input.value = String(settings.fontSize)
+    return
+  }
+  if (value !== settings.fontSize) void change({ fontSize: value })
+}
+
 // ---- 修改登录密码 ----
 const pw = ref({ current: '', next: '', confirm: '' })
 const pwError = ref('')
@@ -119,9 +130,7 @@ async function changePassword() {
             <AppearanceSettings />
             <div class="rm-setting">
               <span class="rm-setting-label">字号</span>
-              <select :value="settings.fontSize" aria-label="字号" @change="change({ fontSize: Number(($event.target as HTMLSelectElement).value) })">
-                <option v-for="n in FONT_SIZES" :key="n" :value="n">{{ n }} px</option>
-              </select>
+              <label class="rm-font-input"><input type="number" step="any" :value="settings.fontSize" aria-label="字号" @blur="changeFont" @keydown.enter="($event.target as HTMLInputElement).blur()" /> px</label>
             </div>
             <div class="rm-setting">
               <span class="rm-setting-label">正文宽度</span>
diff --git a/web/src/app/Sidebar.vue b/web/src/app/Sidebar.vue
index f70f5ec..2298176 100644
--- a/web/src/app/Sidebar.vue
+++ b/web/src/app/Sidebar.vue
@@ -54,7 +54,6 @@ function onRootDrop(e: DragEvent) {
       <p v-if="!tree.length" class="rm-tree-empty">还没有笔记</p>
     </div>
     <div class="rm-sidebar-foot">
-      <button class="rm-foot-btn" title="命令面板（F1）" @click="ws.switcher = '>'"><Icon name="command" />命令</button>
       <button class="rm-foot-btn" title="设置（Ctrl+,）" @click="ws.settings = 'index'"><Icon name="settings" />设置</button>
       <button class="rm-foot-btn" @click="emit('logout')"><Icon name="logout" />退出</button>
     </div>
diff --git a/web/src/app/TabBar.vue b/web/src/app/TabBar.vue
index ef3d33e..ae789de 100644
--- a/web/src/app/TabBar.vue
+++ b/web/src/app/TabBar.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { ref } from 'vue'
+import { nextTick, ref } from 'vue'
 import Icon from './Icon.vue'
 import { noteTitle } from './paths'
 import { closeTab, ws } from './workspace'
@@ -43,8 +43,14 @@ function onDragEnd() {
 // ---- 右键菜单 ----
 const menu = ref<{ path: string; x: number; y: number } | null>(null)
 
-function openMenu(e: MouseEvent, path: string) {
-  menu.value = { path, x: Math.min(e.clientX, innerWidth - 200), y: e.clientY }
+const menuElement = ref<HTMLElement>()
+async function openMenu(e: MouseEvent, path: string) {
+  menu.value = { path, x: e.clientX, y: e.clientY }
+  await nextTick()
+  if (menu.value?.path !== path || !menuElement.value) return
+  const { width, height } = menuElement.value.getBoundingClientRect()
+  menu.value.x = Math.max(4, Math.min(e.clientX, innerWidth - width - 4))
+  menu.value.y = Math.max(4, Math.min(e.clientY, innerHeight - height - 4))
 }
 
 async function closeMany(keep: (index: number, path: string) => boolean) {
@@ -101,7 +107,7 @@ function closeRight(path: string) {
     </button>
     <template v-if="menu">
       <div class="rm-menu-backdrop" @click="menu = null" @contextmenu.prevent="menu = null" />
-      <div class="rm-menu rm-tab-menu" :style="{ left: menu.x + 'px', top: menu.y + 'px' }">
+      <div ref="menuElement" class="rm-menu rm-tab-menu" :style="{ left: menu.x + 'px', top: menu.y + 'px' }">
         <button @click="closeMany((_, p) => p !== menu!.path)">关闭</button>
         <button @click="closeOthers(menu.path)">关闭其他标签页</button>
         <button @click="closeRight(menu.path)">关闭右侧标签页</button>
diff --git a/web/src/app/app.css b/web/src/app/app.css
index 8c39ceb..3ab03cb 100644
--- a/web/src/app/app.css
+++ b/web/src/app/app.css
@@ -535,3 +535,6 @@ button {
 .rm-plugin-tabs { display: flex; flex: none; gap: 4px; padding: 8px; overflow-x: auto; }
 .rm-plugin-tabs .on { background: var(--rm-active); color: var(--rm-accent-strong); }
 @media (pointer: coarse) { .rm-plugin-row .rm-btn, .rm-plugin-tabs .rm-btn { min-height: 44px; } }
+
+.rm-font-input input { width: 80px; padding: 7px; border: 1px solid var(--rm-divider); border-radius: 6px; background: var(--rm-bg); color: var(--rm-text); }
+.rm-tab-menu { right: auto; width: max-content; max-width: calc(100vw - 8px); }
diff --git a/web/src/app/settings.ts b/web/src/app/settings.ts
index 08a067a..34c0c7f 100644
--- a/web/src/app/settings.ts
+++ b/web/src/app/settings.ts
@@ -4,7 +4,6 @@ import { reactive } from 'vue'
 import { api } from './api'
 import { applyAppearance, appearancePaused, sanitizeAppearance, type Appearance } from '../themes/appearance'
 
-export const FONT_SIZES = [14, 15, 16, 17, 18, 20, 22]
 export const TAB_SIZES = [2, 4, 8]
 // 0 为全宽
 export const CONTENT_WIDTHS = [
@@ -27,7 +26,7 @@ export const settings = reactive<Settings>(sanitize(JSON.parse(localStorage.getI
 function sanitize(raw: Record<string, unknown>): Settings {
   const pick = <T>(v: unknown, allowed: T[], def: T) => (allowed.includes(v as T) ? (v as T) : def)
   return {
-    fontSize: pick(raw.fontSize, FONT_SIZES, DEFAULTS.fontSize),
+    fontSize: typeof raw.fontSize === 'number' && Number.isFinite(raw.fontSize) && raw.fontSize > 0 ? raw.fontSize : DEFAULTS.fontSize,
     spellcheck: typeof raw.spellcheck === 'boolean' ? raw.spellcheck : DEFAULTS.spellcheck,
     tabSize: pick(raw.tabSize, TAB_SIZES, DEFAULTS.tabSize),
     ...sanitizeAppearance(raw),