diff --git a/src/client/ui/desktop.vue b/src/client/ui/desktop.vue
new file mode 100644
index 000000000..54ee9b380
--- /dev/null
+++ b/src/client/ui/desktop.vue
@@ -0,0 +1,217 @@
+<template>
+<div class="mk-app" v-hotkey.global="keymap">
+	<XSidebar ref="nav" class="sidebar"/>
+
+	<div class="contents" ref="contents" :class="{ wallpaper }">
+		<div v-if="isDesktop" class="widgets">
+			<div ref="widgetsSpacer"></div>
+			<XWidgets @mounted="attachSticky"/>
+		</div>
+	</div>
+
+	<XCommon/>
+</div>
+</template>
+
+<script lang="ts">
+import { defineComponent, defineAsyncComponent, markRaw } from 'vue';
+import { faLayerGroup, faBars, faHome, faCircle, faWindowMaximize, faColumns } from '@fortawesome/free-solid-svg-icons';
+import { faBell } from '@fortawesome/free-regular-svg-icons';
+import { host } from '@/config';
+import { search } from '@/scripts/search';
+import { StickySidebar } from '@/scripts/sticky-sidebar';
+import XSidebar from '@/components/sidebar.vue';
+import XCommon from './_common_/common.vue';
+import XHeader from './_common_/header.vue';
+import XSide from './default.side.vue';
+import * as os from '@/os';
+import { sidebarDef } from '@/sidebar';
+
+const DESKTOP_THRESHOLD = 1100;
+
+export default defineComponent({
+	components: {
+		XCommon,
+		XSidebar,
+		XHeader,
+		XWidgets: defineAsyncComponent(() => import('./default.widgets.vue')),
+		XSide, // NOTE: dynamic importするとAsyncComponentWrapperが間に入るせいでref取得できなくて面倒になる
+	},
+
+	provide() {
+		return {
+			sideViewHook: this.isDesktop ? (url) => {
+				this.$refs.side.navigate(url);
+			} : null
+		};
+	},
+
+	data() {
+		return {
+			host: host,
+			connection: null,
+			isDesktop: window.innerWidth >= DESKTOP_THRESHOLD,
+			menuDef: sidebarDef,
+			navHidden: false,
+			widgetsShowing: false,
+			wallpaper: localStorage.getItem('wallpaper') != null,
+			faLayerGroup, faBars, faBell, faHome, faCircle,
+		};
+	},
+
+	computed: {
+		keymap(): any {
+			return {
+				'd': () => {
+					if (this.$store.state.device.syncDeviceDarkMode) return;
+					this.$store.commit('device/set', { key: 'darkMode', value: !this.$store.state.device.darkMode });
+				},
+				'p': os.post,
+				'n': os.post,
+				's': search,
+				'h|/': this.help
+			};
+		},
+
+		widgets(): any {
+			return this.$store.state.deviceUser.widgets;
+		},
+
+		menu(): string[] {
+			return this.$store.state.deviceUser.menu;
+		},
+	},
+
+	created() {
+		this.connection = os.stream.useSharedConnection('main');
+		this.connection.on('notification', this.onNotification);
+	},
+
+	mounted() {
+		this.adjustUI();
+
+		const ro = new ResizeObserver((entries, observer) => {
+			this.adjustUI();
+		});
+
+		ro.observe(this.$refs.contents);
+
+		window.addEventListener('resize', this.adjustUI, { passive: true });
+
+		if (!this.isDesktop) {
+			window.addEventListener('resize', () => {
+				if (window.innerWidth >= DESKTOP_THRESHOLD) this.isDesktop = true;
+			}, { passive: true });
+		}
+	},
+
+	methods: {
+		changePage(page) {
+			if (page == null) return;
+			if (page.INFO) {
+				this.pageInfo = page.INFO;
+			}
+		},
+
+		adjustUI() {
+			const navWidth = this.$refs.nav.$el.offsetWidth;
+			this.navHidden = navWidth === 0;
+			if (this.$refs.contents == null) return;
+			const width = this.$refs.contents.offsetWidth;
+			this.$refs.header.style.width = `${width}px`;
+		},
+
+		showNav() {
+			this.$refs.nav.show();
+		},
+
+		attachSticky(el) {
+			const sticky = new StickySidebar(el, this.$refs.widgetsSpacer);
+			window.addEventListener('scroll', () => {
+				sticky.calc(window.scrollY);
+			}, { passive: true });
+		},
+
+		top() {
+			window.scroll({ top: 0, behavior: 'smooth' });
+		},
+
+		help() {
+			this.$router.push('/docs/keyboard-shortcut');
+		},
+
+		onTransition() {
+			if (window._scroll) window._scroll();
+		},
+
+		onContextmenu(e) {
+			const url = this.$route.path;
+			os.contextMenu([{
+				type: 'label',
+				text: url,
+			}, {
+				icon: faColumns,
+				text: this.$t('openInSideView'),
+				action: () => {
+					this.$refs.side.navigate(url);
+				}
+			}, {
+				icon: faWindowMaximize,
+				text: this.$t('openInWindow'),
+				action: () => {
+					os.pageWindow(url);
+				}
+			}], e);
+		},
+
+		async onNotification(notification) {
+			if (this.$store.state.i.mutingNotificationTypes.includes(notification.type)) {
+				return;
+			}
+			if (document.visibilityState === 'visible') {
+				os.stream.send('readNotification', {
+					id: notification.id
+				});
+
+				os.popup(await import('@/components/toast.vue'), {
+					notification
+				}, {}, 'closed');
+			}
+
+			os.sound('notification');
+		},
+	}
+});
+</script>
+
+<style lang="scss" scoped>
+.mk-app {
+	min-height: calc(var(--vh, 1vh) * 100);
+	box-sizing: border-box;
+
+	display: flex;
+
+	> .contents {
+		width: 100%;
+		min-width: 0;
+		padding-top: $header-height;
+
+		&.wallpaper {
+			background: var(--wallpaperOverlay);
+			//backdrop-filter: blur(4px);
+		}
+
+		> .widgets {
+			padding: 0 var(--margin);
+			border-left: solid 1px var(--divider);
+
+			@media (max-width: $widgets-hide-threshold) {
+				display: none;
+			}
+		}
+	}
+}
+</style>
+
+<style lang="scss">
+</style>