diff --git a/A00_Common/app_shell.ts b/A00_Common/app_shell.ts
index 0266dab62..02eab493e 100644
--- a/A00_Common/app_shell.ts
+++ b/A00_Common/app_shell.ts
@@ -11,6 +11,7 @@ import { ui_locales, currentLanguageIndex, setLanguage } from "@ui/ui_template_l
 import { createButton } from "@ui/ui_template_elements";
 import { THEME_STORAGE_KEY, LANG_STORAGE_KEY, ROUTES } from "@config/config_frontend";
 import { navigateTo, isAuthenticated } from "./router";
+import { readTouchMode, setTouchMode, type TouchMode } from "./device_context";
 
 const BRAND_ICON_URL = new URL("../resources/app_branding/prog_icon.jpg", import.meta.url).href;
 
@@ -82,21 +83,7 @@ function buildHeader(): HTMLElement {
   // 네비게이션 링크
   const nav = document.createElement("nav");
   nav.className = "app-nav";
-  const navItems: [keyof typeof ui_locales, string][] = [
-    ["App_Nav_Program", ROUTES.A02_PROG_DETAIL],
-    ["App_Nav_Company", ROUTES.A03_COMP_DETAIL],
-    ["App_Nav_News", ROUTES.A04_NEWS_HISTORY],
-    ["App_Nav_Education", ROUTES.A05_EDU_DETAIL],
-    ["App_Nav_Support", ROUTES.A08_SUPPORT],
-  ];
-  for (const [labelKey, route] of navItems) {
-    const link = createButton({
-      label: L(labelKey),
-      variant: "pill",
-      onClick: () => navigateTo(route as never),
-    });
-    nav.append(link);
-  }
+  nav.append(...buildNavButtons());
 
   // 우측 액션 (언어/테마/로그인)
   const actions = document.createElement("div");
@@ -120,10 +107,118 @@ function buildHeader(): HTMLElement {
   actions.append(authSlot);
   void fillAuthActions(authSlot);
 
-  header.append(brand, nav, actions);
+  header.append(brand, nav, actions, ...buildDrawer(header));
   return header;
 }
 
+const NAV_ITEMS: [keyof typeof ui_locales, string][] = [
+  ["App_Nav_Program", ROUTES.A02_PROG_DETAIL],
+  ["App_Nav_Company", ROUTES.A03_COMP_DETAIL],
+  ["App_Nav_News", ROUTES.A04_NEWS_HISTORY],
+  ["App_Nav_Education", ROUTES.A05_EDU_DETAIL],
+  ["App_Nav_Support", ROUTES.A08_SUPPORT],
+];
+
+function buildNavButtons(): HTMLElement[] {
+  return NAV_ITEMS.map(([labelKey, route]) =>
+    createButton({
+      label: L(labelKey),
+      variant: "pill",
+      onClick: () => navigateTo(route as never),
+    }),
+  );
+}
+
+/* -----------------------------------------------------------------------------
+ * ☰ 서랍(PLAN_기기대응 2-2) — 폭 900 이하(위 메뉴가 숨는 폭) · 터치 모드에서 보임.
+ * 위 메뉴 · 언어 · 테마 · 로그인 단추와 같은 항목 + 터치 모드 스위치. 데스크탑 마우스엔 안 보임.
+ * -------------------------------------------------------------------------- */
+function buildDrawer(header: HTMLElement): HTMLElement[] {
+  const burger = document.createElement("button");
+  burger.type = "button";
+  burger.className = "app-burger";
+  burger.textContent = "☰";
+  burger.setAttribute("aria-label", L("App_Menu"));
+  burger.setAttribute("aria-expanded", "false");
+  const drawer = document.createElement("div");
+  drawer.className = "app-drawer";
+  drawer.setAttribute("role", "dialog");
+  drawer.setAttribute("aria-label", L("App_Menu"));
+  const scrim = document.createElement("div");
+  scrim.className = "app-drawer__scrim";
+  const setOpen = (open: boolean): void => {
+    header.classList.toggle("is-drawer-open", open);
+    burger.setAttribute("aria-expanded", String(open));
+  };
+  burger.addEventListener("click", () => setOpen(!header.classList.contains("is-drawer-open")));
+  scrim.addEventListener("click", () => setOpen(false));
+  drawer.addEventListener("keydown", (e) => e.key === "Escape" && setOpen(false));
+  // 메뉴 · 로그인 항목을 누르면 닫힘(언어 · 테마 · 스위치는 그대로 둠)
+  drawer.addEventListener("click", (e) => {
+    if ((e.target as Element).closest(".app-drawer__nav, .app-drawer__auth")) setOpen(false);
+  });
+
+  const navList = document.createElement("nav");
+  navList.className = "app-drawer__nav";
+  navList.append(...buildNavButtons());
+  const prefs = document.createElement("div");
+  prefs.className = "app-drawer__row";
+  prefs.append(
+    createButton({
+      label: currentLanguageIndex === 0 ? "EN" : "한",
+      variant: "pill",
+      onClick: onApp_Lang_Toggle_Click,
+    }),
+    createButton({
+      label: document.documentElement.getAttribute("data-theme") === "dark" ? "☀" : "☾",
+      variant: "pill",
+      onClick: onApp_Theme_Toggle_Click,
+    }),
+  );
+  const auth = document.createElement("div");
+  auth.className = "app-drawer__row app-drawer__auth";
+  void fillAuthActions(auth);
+  drawer.append(navList, prefs, auth, buildTouchModeSwitch());
+  return [burger, scrim, drawer];
+}
+
+function buildTouchModeSwitch(): HTMLElement {
+  const box = document.createElement("div");
+  box.className = "app-drawer__touch";
+  const label = document.createElement("span");
+  label.textContent = L("App_TouchMode");
+  const group = document.createElement("div");
+  group.className = "app-drawer__row";
+  group.setAttribute("role", "radiogroup");
+  group.setAttribute("aria-label", L("App_TouchMode"));
+  const modes: [TouchMode, keyof typeof ui_locales][] = [
+    ["auto", "App_TouchMode_Auto"],
+    ["on", "App_TouchMode_On"],
+    ["off", "App_TouchMode_Off"],
+  ];
+  const buttons = modes.map(([mode, key]) => {
+    const b = createButton({
+      label: L(key),
+      variant: "pill",
+      onClick: () => {
+        setTouchMode(mode);
+        mark();
+      },
+    });
+    b.setAttribute("role", "radio");
+    b.dataset.touchMode = mode;
+    return b;
+  });
+  const mark = (): void => {
+    const now = readTouchMode();
+    for (const b of buttons) b.setAttribute("aria-checked", String(b.dataset.touchMode === now));
+  };
+  mark();
+  group.append(...buttons);
+  box.append(label, group);
+  return box;
+}
+
 /** 서버 세션 상태에 따라 로그인/로그아웃 버튼을 채운다. */
 async function fillAuthActions(slot: HTMLElement): Promise<void> {
   try {
@@ -259,10 +354,10 @@ const SHELL_CSS = `
   gap: var(--spacing-8);
 }
 .app-outlet {
-  min-height: calc(100vh - 64px - 56px);
+  min-height: calc(100dvh - 64px - 56px);
 }
 .app-outlet--without-footer {
-  min-height: calc(100vh - 64px);
+  min-height: calc(100dvh - 64px);
 }
 .app-footer {
   height: 56px;
@@ -285,7 +380,79 @@ const SHELL_CSS = `
 }
 @media (max-width: 900px) {
   .app-nav { display: none; }
+  .app-actions { margin-left: auto; }
 }
+/* ☰ 서랍 — 폭 900 이하 · 터치 모드에서만 보임(데스크탑 마우스엔 없음) */
+.app-burger,
+.app-drawer,
+.app-drawer__scrim {
+  display: none;
+}
+.app-burger {
+  align-items: center;
+  justify-content: center;
+  min-width: 44px;
+  min-height: 44px;
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius-buttons);
+  background: var(--color-surface);
+  color: var(--color-text);
+  font-size: 20px;
+  cursor: pointer;
+}
+@media (max-width: 900px) {
+  .app-burger { display: inline-flex; }
+}
+html[data-touch="on"] .app-burger { display: inline-flex; }
+.app-header.is-drawer-open .app-drawer__scrim {
+  display: block;
+  position: fixed;
+  inset: 64px 0 0 0;
+  background: rgba(38, 17, 74, 0.35);
+}
+.app-header.is-drawer-open .app-drawer {
+  display: flex;
+  flex-direction: column;
+  gap: var(--spacing-16);
+  position: fixed;
+  top: 64px;
+  right: 0;
+  bottom: 0;
+  width: min(320px, 100vw);
+  padding: var(--spacing-16);
+  overflow-y: auto;
+  background: var(--color-surface-raised);
+  border-left: 1px solid var(--color-border);
+  box-shadow: var(--shadow-lg);
+}
+.app-drawer__nav {
+  display: flex;
+  flex-direction: column;
+  gap: var(--spacing-4);
+}
+.app-drawer__nav > * { justify-content: flex-start; min-height: 44px; }
+.app-drawer__row {
+  display: flex;
+  flex-wrap: wrap;
+  gap: var(--spacing-8);
+}
+.app-drawer__touch {
+  display: flex;
+  flex-direction: column;
+  gap: var(--spacing-8);
+  padding-top: var(--spacing-16);
+  border-top: 1px solid var(--color-border);
+  color: var(--color-text-secondary);
+  font-size: var(--text-caption);
+}
+.app-drawer__touch [aria-checked="true"] {
+  background: var(--color-mist-violet);
+  color: var(--color-accent);
+}
+/* 휴대폰 폭 — 오른쪽 단추(언어 · 테마 · 로그인)는 서랍 안으로 */
+html[data-size="compact"] .app-header { padding: 0 var(--spacing-16); gap: var(--spacing-8); }
+html[data-size="compact"] .app-actions { display: none; }
+html[data-size="compact"] .app-burger { margin-left: auto; }
 `;
 
 export function injectShellStyles(): void {
diff --git a/A00_Common/b_page_scaffold.ts b/A00_Common/b_page_scaffold.ts
index ab46c241d..aeda37272 100644
--- a/A00_Common/b_page_scaffold.ts
+++ b/A00_Common/b_page_scaffold.ts
@@ -174,7 +174,7 @@ const SCAFFOLD_CSS = `
   font-size: var(--text-body-sm);
   color: var(--color-text-muted);
 }
-.b-scaffold-wf { height: calc(100vh - 64px - 56px); }
+.b-scaffold-wf { height: calc(100dvh - 64px - 56px); }
 
 .b-pending {
   display: flex;
diff --git a/A00_Common/device_context.css b/A00_Common/device_context.css
new file mode 100644
index 000000000..a636ae88b
--- /dev/null
+++ b/A00_Common/device_context.css
@@ -0,0 +1,78 @@
+/* =============================================================================
+ * device_context.css — 기기 대응 공통 규칙(PLAN_기기대응 2-6)
+ * 모든 규칙은 `<html>` 표시(data-touch · data-size) 안에서만 — 데스크탑 마우스 화면은 안 바뀜.
+ * 표시는 `device_context.ts` 가 적음.
+ * ========================================================================== */
+
+/* 누를 자리 44px — 손가락(주 입력 coarse) 또는 터치 모드 켬 */
+html[data-touch="on"]
+  :is(
+    .ui-btn,
+    .ui-workflow-overlay__toggle,
+    .ui-sidebar-row,
+    .ui-workflow-layout__step,
+    .ui-ctx-menu__item,
+    select,
+    input:not([type="checkbox"], [type="radio"], [type="range"], [type="hidden"], [type="color"])
+  ) {
+  min-height: 44px;
+}
+
+html[data-touch="on"] .ui-btn {
+  min-width: 44px;
+}
+
+/* 체크 · 라디오 — 상자를 키우고 글까지 한 줄 전체가 누를 자리 */
+html[data-touch="on"] :is(input[type="checkbox"], input[type="radio"]) {
+  width: 22px;
+  height: 22px;
+}
+
+html[data-touch="on"] .ui-checkbox {
+  min-height: 44px;
+}
+
+/* 좌측 패널 손잡이 — 손가락 폭 */
+html[data-touch="on"] .ui-workflow-overlay__handle--side {
+  width: 32px;
+  right: -31px;
+}
+
+/* 팝업(2-4) — 폭 600 미만은 전체 화면 · 겹치면 나중 것(맨 위)만 보이고 × 로 앞 창.
+   공용 모달(.ui-modal) · 페이지 팝업은 공용 클래스 `.ui-popup` 만 붙여 맞춤(자리 · 크기 인라인 값도 덮음) */
+html[data-size="compact"] :is(.ui-modal, .ui-popup) {
+  position: fixed !important;
+  inset: 0 !important;
+  width: auto !important;
+  height: auto !important;
+  min-width: 0 !important;
+  max-width: none !important;
+  max-height: none !important;
+  margin: 0 !important;
+  border-radius: 0 !important;
+  transform: none !important;
+  overflow: auto;
+}
+
+html[data-size="compact"] .ui-confirm__panel {
+  min-width: 0;
+  max-width: calc(100vw - var(--spacing-32));
+}
+
+/* 공용 표(2-5) — 폭 840 미만은 고정 열이 없는 표도 첫 열을 붙임(머리줄은 늘 붙어 있음 · 가로는 밀기) */
+html:is([data-size="compact"], [data-size="medium"])
+  .ui-data-table__table:not(:has(.is-frozen))
+  tr
+  > :first-child {
+  position: sticky;
+  left: 0;
+  z-index: 1;
+}
+
+html:is([data-size="compact"], [data-size="medium"])
+  .ui-data-table__table:not(:has(.is-frozen))
+  thead
+  tr
+  > :first-child {
+  z-index: 3;
+}
diff --git a/A00_Common/device_context.ts b/A00_Common/device_context.ts
new file mode 100644
index 000000000..d59dfc34f
--- /dev/null
+++ b/A00_Common/device_context.ts
@@ -0,0 +1,116 @@
+/* =============================================================================
+ * device_context.ts
+ * 기기 상태 한 곳(요구 193~195 · PLAN_기기대응 2-1) — `<html>` 에 지금 상태를 늘 적음.
+ *
+ * - data-size        = compact(<600) · medium(<840) · expanded(<1200) · large  ← 배치는 이것만 봄
+ * - data-pointer     = 주 입력 coarse · fine(미디어 `pointer`)
+ * - data-input       = 마지막 누름의 pointerType(mouse · touch · pen)
+ * - data-touch-mode  = 사용자 스위치(auto · on · off · 이 기기 브라우저에만 저장)
+ * - data-touch       = on · off — 누를 자리 크기를 키울지(auto 면 주 입력 coarse 일 때)
+ * 바뀔 때만 window 에 `app:context` 이벤트(detail = 지금 상태).
+ * 경계 표는 여기 한 벌 — CSS 는 위 표시(data-size)로 가르고, 숫자가 필요하면 --bp-* 변수.
+ * 첫 화면 깜빡임 — 화면은 모두 JS 가 그리므로 main.ts 가 맨 먼저 import 하면 그리기 전에 적힘.
+ * ========================================================================== */
+
+import "./device_context.css";
+
+export const SIZE_BREAKS = { medium: 600, expanded: 840, large: 1200 } as const;
+export type SizeClass = "compact" | "medium" | "expanded" | "large";
+export type TouchMode = "auto" | "on" | "off";
+
+export interface DeviceContext {
+  size: SizeClass;
+  pointer: "coarse" | "fine";
+  input: string;
+  touchMode: TouchMode;
+  touch: boolean;
+}
+
+const TOUCH_MODE_KEY = "frd_touch_mode";
+
+export function sizeClassOf(width: number): SizeClass {
+  if (width < SIZE_BREAKS.medium) return "compact";
+  if (width < SIZE_BREAKS.expanded) return "medium";
+  if (width < SIZE_BREAKS.large) return "expanded";
+  return "large";
+}
+
+let modeInMemory: TouchMode | null = null; // 저장이 막힌 브라우저용
+
+export function readTouchMode(): TouchMode {
+  if (modeInMemory) return modeInMemory;
+  try {
+    const v = localStorage.getItem(TOUCH_MODE_KEY);
+    return v === "on" || v === "off" ? v : "auto";
+  } catch {
+    return "auto";
+  }
+}
+
+const coarseQuery = window.matchMedia("(pointer: coarse)");
+let current: DeviceContext | null = null;
+let lastInput = "";
+
+function read(): DeviceContext {
+  const pointer = coarseQuery.matches ? "coarse" : "fine";
+  const touchMode = readTouchMode();
+  return {
+    size: sizeClassOf(window.innerWidth),
+    pointer,
+    input: lastInput || (pointer === "coarse" ? "touch" : "mouse"),
+    touchMode,
+    touch: touchMode === "on" || (touchMode === "auto" && pointer === "coarse"),
+  };
+}
+
+function apply(): void {
+  const next = read();
+  if (current && JSON.stringify(current) === JSON.stringify(next)) return;
+  const html = document.documentElement;
+  html.dataset.size = next.size;
+  html.dataset.pointer = next.pointer;
+  html.dataset.input = next.input;
+  html.dataset.touchMode = next.touchMode;
+  html.dataset.touch = next.touch ? "on" : "off";
+  const first = !current;
+  current = next;
+  if (!first) window.dispatchEvent(new CustomEvent("app:context", { detail: next }));
+}
+
+export function deviceContext(): DeviceContext {
+  return current ?? read();
+}
+
+/** 터치 모드 스위치(☰ 서랍) — 이 기기 브라우저에만 저장 */
+export function setTouchMode(mode: TouchMode): void {
+  modeInMemory = mode;
+  try {
+    if (mode === "auto") localStorage.removeItem(TOUCH_MODE_KEY);
+    else localStorage.setItem(TOUCH_MODE_KEY, mode);
+  } catch {
+    /* 저장 막힌 브라우저 — 이번 화면만 */
+  }
+  apply();
+}
+
+function init(): void {
+  const html = document.documentElement;
+  for (const [name, px] of Object.entries(SIZE_BREAKS))
+    html.style.setProperty(`--bp-${name}`, `${px}px`);
+  apply();
+  coarseQuery.addEventListener("change", apply);
+  window.addEventListener("resize", apply);
+  window.visualViewport?.addEventListener("resize", apply);
+  screen.orientation?.addEventListener("change", apply);
+  window.addEventListener(
+    "pointerdown",
+    (e) => {
+      if (e.pointerType === lastInput) return;
+      lastInput = e.pointerType;
+      apply();
+    },
+    { capture: true, passive: true },
+  );
+}
+
+init();
diff --git a/A00_Common/main.ts b/A00_Common/main.ts
index 571f02c10..2a84f9ce1 100644
--- a/A00_Common/main.ts
+++ b/A00_Common/main.ts
@@ -9,6 +9,7 @@
  * ========================================================================== */
 
 import "./random_uuid_polyfill";
+import "./device_context"; // 맨 앞 — 그리기 전에 <html> 기기 표시(기기대응 2-1)
 import "@ui/ui_template_theme.css";
 import { injectBaseStyles } from "@ui/ui_template_elements";
 import { blockNativeMenu, NATIVE_MENU_ROUTE } from "@ui/ui_template_native_menu";
diff --git a/A00_Common/spreadsheet/spreadsheet_data_menu.ts b/A00_Common/spreadsheet/spreadsheet_data_menu.ts
index e27d0402a..3441b644e 100644
--- a/A00_Common/spreadsheet/spreadsheet_data_menu.ts
+++ b/A00_Common/spreadsheet/spreadsheet_data_menu.ts
@@ -129,7 +129,7 @@ export function mountDataMenu(ctx: SpreadsheetContext, back: () => void): DataMe
     attrs: { type: "button", title: TEXT.close },
   });
   const dialog = el("div", {
-    className: "ss-dialog",
+    className: "ss-dialog ui-popup",
     attrs: { hidden: "" },
     children: [el("div", { className: "ss-dialog__head", children: [title, shut] }), body],
   });
diff --git a/A00_Common/spreadsheet/spreadsheet_eval_steps.ts b/A00_Common/spreadsheet/spreadsheet_eval_steps.ts
index e19ee044a..67bc68b39 100644
--- a/A00_Common/spreadsheet/spreadsheet_eval_steps.ts
+++ b/A00_Common/spreadsheet/spreadsheet_eval_steps.ts
@@ -210,7 +210,7 @@ export function openEvalSteps(ctx: SpreadsheetContext): () => void {
     onClick: () => go(i + 1 < steps.length ? i + 1 : 0),
   });
   const box = el("div", {
-    className: "ss-steps__box",
+    className: "ss-steps__box ui-popup",
     attrs: { role: "dialog", "aria-label": t("Title") },
   });
   const shade = el("div", { className: "ss-steps", children: [box] });
diff --git a/A00_Common/spreadsheet/spreadsheet_sort_dialog.ts b/A00_Common/spreadsheet/spreadsheet_sort_dialog.ts
index b34f99b55..92effb8cd 100644
--- a/A00_Common/spreadsheet/spreadsheet_sort_dialog.ts
+++ b/A00_Common/spreadsheet/spreadsheet_sort_dialog.ts
@@ -87,7 +87,7 @@ export function openSortDialog(ctx: SpreadsheetContext): () => void {
   const caseBox = el("input", { attrs: { type: "checkbox" } });
   const list = el("div", { className: "ss-sort__keys" });
   const box = el("div", {
-    className: "ss-sort__box",
+    className: "ss-sort__box ui-popup",
     attrs: { role: "dialog", "aria-label": t("Title") },
   });
   const shade = el("div", { className: "ss-sort", children: [box] });
diff --git a/B01_Dashboard/B01_Dashboard_UI_Style.css b/B01_Dashboard/B01_Dashboard_UI_Style.css
index f4f62046f..114a72f0e 100644
--- a/B01_Dashboard/B01_Dashboard_UI_Style.css
+++ b/B01_Dashboard/B01_Dashboard_UI_Style.css
@@ -560,7 +560,7 @@
   display: flex;
   flex-direction: column;
   width: min(380px, calc(100vw - 32px));
-  height: min(680px, calc(100vh - 104px));
+  height: min(680px, calc(100dvh - 104px));
   border: 1px solid var(--color-border);
   border-radius: 12px;
   background: var(--color-surface, #fff);
diff --git a/B03_FileInput/B03_FileInput_UI_Style.css b/B03_FileInput/B03_FileInput_UI_Style.css
index be437104d..6719bdcd3 100644
--- a/B03_FileInput/B03_FileInput_UI_Style.css
+++ b/B03_FileInput/B03_FileInput_UI_Style.css
@@ -1,5 +1,5 @@
 .b03-file {
-  min-height: calc(100vh - var(--app-header-height, 0px));
+  min-height: calc(100dvh - var(--app-header-height, 0px));
   background: linear-gradient(
     180deg,
     var(--color-canvas, #ffffff) 0%,
diff --git a/B03_FileInput/B03_FileInput_UI_TempPicker.ts b/B03_FileInput/B03_FileInput_UI_TempPicker.ts
index 52d84a3c2..fd0dcb436 100644
--- a/B03_FileInput/B03_FileInput_UI_TempPicker.ts
+++ b/B03_FileInput/B03_FileInput_UI_TempPicker.ts
@@ -74,7 +74,7 @@ export function createTempPicker(
     const backdrop = document.createElement("div");
     backdrop.className = "b03-file__modal-backdrop";
     const modal = document.createElement("div");
-    modal.className = "b03-file__modal b03-file__temp-modal";
+    modal.className = "b03-file__modal b03-file__temp-modal ui-popup";
     modal.setAttribute("role", "dialog");
     modal.setAttribute("aria-modal", "true");
 
diff --git a/B04_PreProcess/B04_PreProcess_UI_Style.css b/B04_PreProcess/B04_PreProcess_UI_Style.css
index 3ac47607d..fefe8d440 100644
--- a/B04_PreProcess/B04_PreProcess_UI_Style.css
+++ b/B04_PreProcess/B04_PreProcess_UI_Style.css
@@ -119,7 +119,7 @@
   flex-direction: column;
   width: 100%;
   max-width: none;
-  min-height: calc(100vh - var(--spacing-64));
+  min-height: calc(100dvh - var(--spacing-64));
 }
 
 .b04-surface__workspace > .b04-surface__status {
diff --git a/B05_Profile/B05_Profile_UI_RouteEdit_Chrome.ts b/B05_Profile/B05_Profile_UI_RouteEdit_Chrome.ts
index 51cc3a763..fb0c4208d 100644
--- a/B05_Profile/B05_Profile_UI_RouteEdit_Chrome.ts
+++ b/B05_Profile/B05_Profile_UI_RouteEdit_Chrome.ts
@@ -45,7 +45,7 @@ export function createRouteEditChrome(): RouteEditChrome {
   const overlay = document.createElement("div");
   overlay.className = "ui-modal__backdrop b05-routeedit";
   overlay.innerHTML = `
-    <div class="b05-routeedit__box" role="dialog" aria-label="계획노선 편집">
+    <div class="b05-routeedit__box ui-popup" role="dialog" aria-label="계획노선 편집">
       <div class="ui-modal__top b05-routeedit__head">
         <h3>계획노선 편집</h3>
         <span class="b05-routeedit__rec-now" data-rec-now></span>
diff --git a/B05_Profile/B05_Profile_UI_Style.css b/B05_Profile/B05_Profile_UI_Style.css
index cc48c359a..1a83939f5 100644
--- a/B05_Profile/B05_Profile_UI_Style.css
+++ b/B05_Profile/B05_Profile_UI_Style.css
@@ -1,5 +1,5 @@
 .b05-route-layout {
-  height: calc(100vh - var(--spacing-64));
+  height: calc(100dvh - var(--spacing-64));
   height: calc(100dvh - var(--spacing-64));
   min-height: 0;
   overflow: hidden;
diff --git a/B06_Section/B06_Section_UI_Style.css b/B06_Section/B06_Section_UI_Style.css
index af048abe8..7c3d27d53 100644
--- a/B06_Section/B06_Section_UI_Style.css
+++ b/B06_Section/B06_Section_UI_Style.css
@@ -9,7 +9,7 @@
 
 /* --- 좌측 입력 폼 --- */
 .b06-profile-layout {
-  height: calc(100vh - var(--spacing-64));
+  height: calc(100dvh - var(--spacing-64));
   height: calc(100dvh - var(--spacing-64));
   min-height: 0;
   overflow: hidden;
diff --git a/B07_DesignDetail/B07_DesignDetail_UI_Style.css b/B07_DesignDetail/B07_DesignDetail_UI_Style.css
index 9e7c36ded..d46accf59 100644
--- a/B07_DesignDetail/B07_DesignDetail_UI_Style.css
+++ b/B07_DesignDetail/B07_DesignDetail_UI_Style.css
@@ -5,7 +5,7 @@
 
 /* 워크플로우 레이아웃 높이 (B06 패턴 준수) */
 .b07-design-layout {
-  height: calc(100vh - var(--spacing-64));
+  height: calc(100dvh - var(--spacing-64));
   height: calc(100dvh - var(--spacing-64));
   min-height: 0;
 }
diff --git a/B08_Quantity/B08_Quantity_UI_Hydro.css b/B08_Quantity/B08_Quantity_UI_Hydro.css
index 01a53d34a..c079a276a 100644
--- a/B08_Quantity/B08_Quantity_UI_Hydro.css
+++ b/B08_Quantity/B08_Quantity_UI_Hydro.css
@@ -39,11 +39,11 @@
   }
 }
 
-/* 카드 높이 = 화면 따라(B08 다른 표와 같은 calc(100vh − N)) · 넘치면 카드 몸만 스크롤 */
+/* 카드 높이 = 화면 따라(B08 다른 표와 같은 calc(100dvh − N)) · 넘치면 카드 몸만 스크롤 */
 .b08-hydro__card {
   display: flex;
   flex-direction: column;
-  max-height: calc(100vh - 240px);
+  max-height: calc(100dvh - 240px);
 }
 
 .b08-hydro__card .ui-card__body {
diff --git a/B09_Estimation/B09_Estimation_UI_Popup.ts b/B09_Estimation/B09_Estimation_UI_Popup.ts
index 62c9ee360..d20b4ad27 100644
--- a/B09_Estimation/B09_Estimation_UI_Popup.ts
+++ b/B09_Estimation/B09_Estimation_UI_Popup.ts
@@ -113,7 +113,7 @@ export function openRowPopup(o: PopupOpen): void {
   listen();
   const level = stack.length;
   const box = document.createElement("div");
-  box.className = "b09-estimation b09-popup";
+  box.className = "b09-estimation b09-popup ui-popup";
   box.setAttribute("role", "dialog");
   box.setAttribute("aria-label", tabName(tab));
   box.dataset.b09Popup = tab;
diff --git a/B09_Estimation/draft/B09_Draft_Print_Page.css b/B09_Estimation/draft/B09_Draft_Print_Page.css
index a9f0bfb1a..aaedbfa0f 100644
--- a/B09_Estimation/draft/B09_Draft_Print_Page.css
+++ b/B09_Estimation/draft/B09_Draft_Print_Page.css
@@ -4,7 +4,7 @@
   display: flex;
   flex-direction: column;
   gap: var(--spacing-8);
-  height: calc(100vh - var(--spacing-64));
+  height: calc(100dvh - var(--spacing-64));
   padding: var(--spacing-16) var(--spacing-24);
   box-sizing: border-box;
 }
diff --git a/M01_MasterData/M01_MasterData_UI_LogicLab_Copy.ts b/M01_MasterData/M01_MasterData_UI_LogicLab_Copy.ts
index 5df376fd3..3f0ef15eb 100644
--- a/M01_MasterData/M01_MasterData_UI_LogicLab_Copy.ts
+++ b/M01_MasterData/M01_MasterData_UI_LogicLab_Copy.ts
@@ -82,7 +82,7 @@ function openTablePick(onPick: (table: TableHead) => void): void {
   const search = createInputField({ type: "search", placeholder: tl("Copy_PickSearch") });
   const list = el("div", { className: "m01-logic__pick-list" });
   const dialog = el("div", {
-    className: "m01-logic__pick",
+    className: "m01-logic__pick ui-popup",
     attrs: { role: "dialog", "aria-label": tl("Copy_PickTitle") },
     children: [
       el("div", {
diff --git a/M01_MasterData/M01_MasterData_UI_Logic_Pick.ts b/M01_MasterData/M01_MasterData_UI_Logic_Pick.ts
index cdeee432b..331f59cc6 100644
--- a/M01_MasterData/M01_MasterData_UI_Logic_Pick.ts
+++ b/M01_MasterData/M01_MasterData_UI_Logic_Pick.ts
@@ -47,7 +47,7 @@ export function openPicker(mode: PickMode, group: string, done: PickDone): void
   const list = el("div", { className: "m01-logic__pick-list" });
   const close = (): void => backdrop.remove();
   const dialog = el("div", {
-    className: "m01-logic__pick",
+    className: "m01-logic__pick ui-popup",
     attrs: { role: "dialog", "aria-label": tx("Pick_Title") },
     children: [
       el("div", {
diff --git a/M01_MasterData/M01_MasterData_UI_Logic_PickTable.ts b/M01_MasterData/M01_MasterData_UI_Logic_PickTable.ts
index d093bd119..9315c9640 100644
--- a/M01_MasterData/M01_MasterData_UI_Logic_PickTable.ts
+++ b/M01_MasterData/M01_MasterData_UI_Logic_PickTable.ts
@@ -51,7 +51,7 @@ export function openPickTable(opt: PickTableOptions): void {
   const search = searchField.input;
   const host = el("div", { className: "m01-logic__pick-list" });
   const dialog = el("div", {
-    className: "m01-logic__pick m01-logic__pick--table",
+    className: "m01-logic__pick m01-logic__pick--table ui-popup",
     attrs: { role: "dialog", "aria-label": opt.title },
     children: [
       el("div", {
diff --git a/M01_MasterData/M01_MasterData_UI_Logic_Style.css b/M01_MasterData/M01_MasterData_UI_Logic_Style.css
index db43968d9..3aa086b58 100644
--- a/M01_MasterData/M01_MasterData_UI_Logic_Style.css
+++ b/M01_MasterData/M01_MasterData_UI_Logic_Style.css
@@ -347,7 +347,7 @@ input.m01-logic__input {
   width: min(720px, 92vw);
   /* 위에서 고정 거리 — 공용 .ui-modal 과 같은 규칙(찾기 칸이 안 움직임) */
   max-height: var(--modal-max, 80vh);
-  margin-top: calc((100vh - var(--modal-max, 80vh)) / 2);
+  margin-top: calc((100dvh - var(--modal-max, 80vh)) / 2);
   padding: var(--spacing-16);
   border-radius: var(--radius-xl);
   border: 1px solid var(--color-border);
diff --git a/M01_MasterData/M01_MasterData_UI_Style.css b/M01_MasterData/M01_MasterData_UI_Style.css
index 20950050a..5af4e0033 100644
--- a/M01_MasterData/M01_MasterData_UI_Style.css
+++ b/M01_MasterData/M01_MasterData_UI_Style.css
@@ -91,7 +91,7 @@
 }
 
 .m01-master__grid-wrap {
-  max-height: calc(100vh - 300px);
+  max-height: calc(100dvh - 300px);
   overflow: auto;
   border: 1px solid var(--color-border);
   border-radius: var(--radius-cards);
diff --git a/M02_MasterTemplete/DataFlow/M02_DF_FuncPanel.css b/M02_MasterTemplete/DataFlow/M02_DF_FuncPanel.css
index 77a5471f1..47704d85a 100644
--- a/M02_MasterTemplete/DataFlow/M02_DF_FuncPanel.css
+++ b/M02_MasterTemplete/DataFlow/M02_DF_FuncPanel.css
@@ -121,7 +121,7 @@ button.m02-dfpanel-chip:focus-visible {
 /* 판 높이 크게 — 안쪽 세로 스크롤 없이 보이게 */
 .m02-dfpanel-sheet {
   position: relative;
-  height: max(640px, calc(100vh - 260px));
+  height: max(640px, calc(100dvh - 260px));
   border: 1px solid var(--color-border);
   border-radius: var(--radius-cards);
   overflow: hidden;
diff --git a/M02_MasterTemplete/M02_MasterTemplete_Drawing.css b/M02_MasterTemplete/M02_MasterTemplete_Drawing.css
index 2aa856e6a..69b9063c4 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_Drawing.css
+++ b/M02_MasterTemplete/M02_MasterTemplete_Drawing.css
@@ -5,7 +5,7 @@
    표 양식일 때는 페이지 쪽 모양 그대로 두려고 도면을 품은 때만 건다. */
 .m02-main:has(> .m02-main__host > .m02-drawing) {
   box-sizing: border-box;
-  height: calc(100vh - var(--spacing-64));
+  height: calc(100dvh - var(--spacing-64));
   min-height: 0;
 }
 
diff --git a/M02_MasterTemplete/M02_MasterTemplete_ItemPick.css b/M02_MasterTemplete/M02_MasterTemplete_ItemPick.css
index de02c066e..18587c1db 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_ItemPick.css
+++ b/M02_MasterTemplete/M02_MasterTemplete_ItemPick.css
@@ -7,7 +7,7 @@
 }
 
 .m02-itempick .m01-master__grid-wrap {
-  max-height: min(60vh, calc(100vh - 300px));
+  max-height: min(60vh, calc(100dvh - 300px));
 }
 
 .ui-modal.m02-itempick__dialog {
diff --git a/M02_MasterTemplete/M02_MasterTemplete_Labor_Pick.ts b/M02_MasterTemplete/M02_MasterTemplete_Labor_Pick.ts
index 043ece45b..275b0520a 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_Labor_Pick.ts
+++ b/M02_MasterTemplete/M02_MasterTemplete_Labor_Pick.ts
@@ -252,7 +252,7 @@ export function openLogicPicker(done: (logic: LogicSummary) => void, lib?: Libra
     });
 
   const dialog = el("div", {
-    className: "m01-logic__pick m01-combo",
+    className: "m01-logic__pick m01-combo ui-popup",
     attrs: { role: "dialog", "aria-label": tc("Pick_Title") },
     children: [
       el("div", {
diff --git a/M02_MasterTemplete/M02_MasterTemplete_Structure.css b/M02_MasterTemplete/M02_MasterTemplete_Structure.css
index 9d429ee3c..b8f7ea590 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_Structure.css
+++ b/M02_MasterTemplete/M02_MasterTemplete_Structure.css
@@ -40,7 +40,7 @@
 /* 카드가 보이면 상세 칸은 창 높이까지 — 표 + 카드가 넘치면 상세 칸 전체가 스크롤 */
 .m02-main:has(> .m02-main__extra > .m02-struct:not([hidden])) {
   box-sizing: border-box;
-  max-height: calc(100vh - var(--spacing-64));
+  max-height: calc(100dvh - var(--spacing-64));
   overflow-y: auto;
 }
 
diff --git a/M02_MasterTemplete/M02_MasterTemplete_UI_Style.css b/M02_MasterTemplete/M02_MasterTemplete_UI_Style.css
index d3bf36606..0dc8bfdfb 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_UI_Style.css
+++ b/M02_MasterTemplete/M02_MasterTemplete_UI_Style.css
@@ -137,7 +137,7 @@
 /* 면적산출 · 재료산출 전체 편집 — `.ss` 는 height:100% 로 부모 높이를 받음 · 도면 편집과 같이 메인 칸을 화면 높이로 채움 */
 .m02-main:has(> .m02-main__host > .ss) {
   box-sizing: border-box;
-  height: calc(100vh - var(--spacing-64));
+  height: calc(100dvh - var(--spacing-64));
   min-height: 0;
 }
 
@@ -155,7 +155,7 @@
 /* 일위대가 상세(85-5) — 면적 상세와 같은 고정 높이 · 본문 칸만 굴림 · 오른쪽 패널은 칸 높이(따로 스크롤) */
 .m02-main:has(> .m02-main__host > .ui-side-panels-row) {
   box-sizing: border-box;
-  height: calc(100vh - var(--spacing-64));
+  height: calc(100dvh - var(--spacing-64));
   min-height: 0;
 }
 
diff --git a/M02_MasterTemplete/StructOptions/M02_SO_Style.css b/M02_MasterTemplete/StructOptions/M02_SO_Style.css
index cc499e87a..233ecdc49 100644
--- a/M02_MasterTemplete/StructOptions/M02_SO_Style.css
+++ b/M02_MasterTemplete/StructOptions/M02_SO_Style.css
@@ -23,7 +23,7 @@
 
 .m02-opts__kinds,
 .m02-opts__list {
-  max-height: calc(100vh - 20rem);
+  max-height: calc(100dvh - 20rem);
   overflow-y: auto;
   display: flex;
   flex-direction: column;
diff --git a/resources/tester/test_199_1_fill_viewport.py b/resources/tester/test_199_1_fill_viewport.py
index ede12aa32..c8c9c53d6 100644
--- a/resources/tester/test_199_1_fill_viewport.py
+++ b/resources/tester/test_199_1_fill_viewport.py
@@ -72,7 +72,7 @@ def test_공용_표_옵션과_연결():
 def test_합계_줄_고정_그대로():
     css = _read("ui_template", "ui_template_data_table.css")
     assert re.search(r"tfoot[^{]*\{[^}]*position:\s*sticky[^}]*bottom:\s*0", css, re.S)
-    assert "max-height: calc(100vh - 260px)" in css  # 옵션 안 준 표의 기본값은 그대로
+    assert "max-height: calc(100dvh - 260px)" in css  # 옵션 안 준 표의 기본값은 그대로
 
 
 @pytest.mark.parametrize(
diff --git a/resources/tester/test_303_b09_row_popup.py b/resources/tester/test_303_b09_row_popup.py
index f1aa069ed..a1bfc3fa6 100644
--- a/resources/tester/test_303_b09_row_popup.py
+++ b/resources/tester/test_303_b09_row_popup.py
@@ -238,7 +238,7 @@ def test_창_열_제목_강조_줄_자리():
         " table: box.children[1].dataset.b09Table, left: box.style.left, top: box.style.top }));"
     )
     assert out["boxes"] == ["bill"] and out["n"] == 1
-    assert out["cls"] == "b09-estimation b09-popup"  # 창 안 = b09 표 꼴(빨강 테두리)
+    assert out["cls"] == "b09-estimation b09-popup ui-popup"  # 창 안 = b09 표 꼴(빨강 테두리)
     assert out["head"] == ["설계내역서", "탭으로", "×"]
     assert out["rows"] == ["b1", "b2", "b3"]  # 그 줄 + 자손
     assert out["rowCls"] == ["is-title is-pick is-pick-top", "is-pick", "is-pick is-pick-end"]
diff --git a/resources/tester/test_device_audit.py b/resources/tester/test_device_audit.py
index 792906a81..062e788a3 100644
--- a/resources/tester/test_device_audit.py
+++ b/resources/tester/test_device_audit.py
@@ -157,6 +157,14 @@ def _open(page, route):
         page.wait_for_load_state("networkidle", timeout=15000)
     except Exception:
         pass
+    try:  # 불러오는 중 표시(돌이 · 진행 원)가 사라질 때까지 — 반쯤 그린 화면을 찍지 않게
+        page.wait_for_function(
+            "() => ![...document.querySelectorAll('.ui-loading, .ui-progress-circle')]"
+            ".some((e) => e.getClientRects().length)",
+            timeout=45000,
+        )
+    except Exception:
+        pass
     page.wait_for_timeout(1500)
 
 
diff --git a/resources/tester/test_m02_tree_paste.py b/resources/tester/test_m02_tree_paste.py
index 7cecd6ca3..17da9b13c 100644
--- a/resources/tester/test_m02_tree_paste.py
+++ b/resources/tester/test_m02_tree_paste.py
@@ -155,6 +155,6 @@ def test_항목_추가_창_카드_격자_표_접기():
     assert "grid-auto-rows: var(--m02-struct-card-h);" in css
     assert "--m02-struct-card-h: min(640px, 70vh);" in css  # 31-6 화면 높이에 맞춤
     assert "flex: 1 0 var(--m02-struct-grid-min);" in css  # 엑셀 격자가 카드 높이를 채움
-    assert "max-height: calc(100vh - var(--spacing-64));\n  overflow-y: auto;" in css
+    assert "max-height: calc(100dvh - var(--spacing-64));\n  overflow-y: auto;" in css
     main = (m02 / "M02_MasterTemplete_UI_Main.ts").read_text("utf-8")
     assert "host.hidden = !host.hidden;" in main and 'title.classList.toggle("is-folded"' in main
diff --git a/resources/tester/test_modal_top_and_add_word.py b/resources/tester/test_modal_top_and_add_word.py
index 837b27b68..4b719fe42 100644
--- a/resources/tester/test_modal_top_and_add_word.py
+++ b/resources/tester/test_modal_top_and_add_word.py
@@ -28,7 +28,7 @@ def test_공용_모달_위_고정():
     assert "align-items: flex-start;" in _block(css, ".ui-modal__backdrop")
     modal = _block(css, ".ui-modal")
     assert "max-height: var(--modal-max, 80vh);" in modal
-    assert "margin-top: calc((100vh - var(--modal-max, 80vh)) / 2);" in modal
+    assert "margin-top: calc((100dvh - var(--modal-max, 80vh)) / 2);" in modal
     # 큰 창은 max-height 대신 --modal-max(위 거리가 함께 맞음)
     # 고르기 창 = 공용 큰 창 곁값(147-2)
     assert "--modal-max: 94vh;" in _block(css, ".ui-modal.ui-modal--wide")
@@ -44,7 +44,7 @@ def test_공용_모달_위_고정():
 def test_따로_둔_모달도_위_고정():
     logic = _text("M01_MasterData/M01_MasterData_UI_Logic_Style.css")
     assert "align-items: flex-start;" in _block(logic, ".m01-logic__backdrop")
-    assert "margin-top: calc((100vh - var(--modal-max, 80vh)) / 2);" in _block(
+    assert "margin-top: calc((100dvh - var(--modal-max, 80vh)) / 2);" in _block(
         logic, ".m01-logic__pick"
     )
     assert "--modal-max: 90vh;" in _block(
diff --git a/ui_template/sheet/ui_template_sheet.css b/ui_template/sheet/ui_template_sheet.css
index 57f73268a..e9163a6f1 100644
--- a/ui_template/sheet/ui_template_sheet.css
+++ b/ui_template/sheet/ui_template_sheet.css
@@ -29,7 +29,7 @@
 
 .ui-sheet__scroll {
   overflow: auto;
-  max-height: calc(100vh - 260px);
+  max-height: calc(100dvh - 260px);
   border: 1px solid var(--color-border);
   background: var(--color-canvas);
 }
diff --git a/ui_template/ui_template_context_menu.css b/ui_template/ui_template_context_menu.css
index c726c6c66..f688d3f96 100644
--- a/ui_template/ui_template_context_menu.css
+++ b/ui_template/ui_template_context_menu.css
@@ -6,7 +6,7 @@
 :where(.ui-ctx-menu) {
   position: absolute;
   z-index: var(--z-dropdown);
-  max-height: calc(100vh - 8px);
+  max-height: calc(100dvh - 8px);
 }
 
 .ui-ctx-menu {
diff --git a/ui_template/ui_template_data_table.css b/ui_template/ui_template_data_table.css
index ed9f05f32..f999d1c82 100644
--- a/ui_template/ui_template_data_table.css
+++ b/ui_template/ui_template_data_table.css
@@ -19,7 +19,7 @@
   --dt-lv5-size: var(--text-caption);
   width: fit-content; /* 표가 좁으면 틀도 표만큼 */
   max-width: 100%;
-  max-height: calc(100vh - 260px);
+  max-height: calc(100dvh - 260px);
   overflow: auto;
   border: 1px solid var(--dt-line);
   border-radius: var(--radius-lg);
diff --git a/ui_template/ui_template_general_layout.css b/ui_template/ui_template_general_layout.css
index cf4605f71..44222cb2c 100644
--- a/ui_template/ui_template_general_layout.css
+++ b/ui_template/ui_template_general_layout.css
@@ -1,5 +1,5 @@
 .ui-general-layout {
-  min-height: calc(100vh - var(--spacing-64));
+  min-height: calc(100dvh - var(--spacing-64));
   padding: var(--spacing-40) var(--spacing-24) var(--spacing-48);
   background: var(--color-bg);
 }
diff --git a/ui_template/ui_template_hover_info.ts b/ui_template/ui_template_hover_info.ts
index 8080868ce..7fa67d442 100644
--- a/ui_template/ui_template_hover_info.ts
+++ b/ui_template/ui_template_hover_info.ts
@@ -121,11 +121,17 @@ export function attachHoverInfo(root: HTMLElement, text: HoverText, selector?: s
   };
   const over = (e: Event): void => enter(e, HOVER_DELAY_MS);
   const focus = (e: Event): void => enter(e, 0);
+  // 손가락 — hover 가 없으니 톡 하면 바로 뜸(기기대응 2-6 · 다음 누름에 닫힘)
+  const tap = (e: PointerEvent): void => {
+    if (e.pointerType === "touch") enter(e, 0);
+  };
+  root.addEventListener("pointerup", tap);
   root.addEventListener("mouseover", over);
   root.addEventListener("mouseout", leave);
   root.addEventListener("focusin", focus);
   root.addEventListener("focusout", leave);
   return () => {
+    root.removeEventListener("pointerup", tap);
     root.removeEventListener("mouseover", over);
     root.removeEventListener("mouseout", leave);
     root.removeEventListener("focusin", focus);
diff --git a/ui_template/ui_template_locale_common.ts b/ui_template/ui_template_locale_common.ts
index e8f680e62..b78139c67 100644
--- a/ui_template/ui_template_locale_common.ts
+++ b/ui_template/ui_template_locale_common.ts
@@ -100,6 +100,11 @@ export const ui_locales_common = {
   App_Nav_News: ["소식", "News"],
   App_Nav_Education: ["교육", "Education"],
   App_Nav_Support: ["기술지원", "Support"],
+  App_Menu: ["메뉴", "Menu"],
+  App_TouchMode: ["터치 모드", "Touch mode"],
+  App_TouchMode_Auto: ["자동", "Auto"],
+  App_TouchMode_On: ["켬", "On"],
+  App_TouchMode_Off: ["끔", "Off"],
   App_Footer_Copyright: [
     "© 2026 임도설계 및 견적 자동화. All rights reserved.",
     "© 2026 Forest Road Design & Estimation. All rights reserved.",
diff --git a/ui_template/ui_template_loupe.css b/ui_template/ui_template_loupe.css
index 74bbaa9e0..5961245a9 100644
--- a/ui_template/ui_template_loupe.css
+++ b/ui_template/ui_template_loupe.css
@@ -30,7 +30,7 @@
   left: 0;
   top: 0;
   width: 100vw;
-  height: 100vh;
+  height: 100dvh;
   transform-origin: 0 0;
 }
 
diff --git a/ui_template/ui_template_modal.css b/ui_template/ui_template_modal.css
index f3de6f41d..e104fc91e 100644
--- a/ui_template/ui_template_modal.css
+++ b/ui_template/ui_template_modal.css
@@ -16,7 +16,7 @@
   gap: var(--spacing-8);
   width: min(720px, 92vw);
   max-height: var(--modal-max, 80vh);
-  margin-top: calc((100vh - var(--modal-max, 80vh)) / 2);
+  margin-top: calc((100dvh - var(--modal-max, 80vh)) / 2);
   padding: var(--spacing-16);
   border-radius: var(--radius-xl);
   border: 1px solid var(--color-border);
diff --git a/ui_template/ui_template_overlay.css b/ui_template/ui_template_overlay.css
index 09a1be164..9e033e8f2 100644
--- a/ui_template/ui_template_overlay.css
+++ b/ui_template/ui_template_overlay.css
@@ -8,7 +8,7 @@
   z-index: var(--z-dropdown);
   display: flex;
   flex-direction: column;
-  max-height: calc(100vh - var(--spacing-64) - var(--spacing-32));
+  max-height: calc(100dvh - var(--spacing-64) - var(--spacing-32));
   overflow: hidden;
   border: 1px solid var(--color-border);
   border-radius: var(--radius-cards);
@@ -305,7 +305,7 @@
   .ui-workflow-overlay__panel--progress {
     top: calc(var(--spacing-64) + var(--spacing-8));
     right: var(--spacing-8);
-    max-height: calc(100vh - var(--spacing-64) - var(--spacing-16));
+    max-height: calc(100dvh - var(--spacing-64) - var(--spacing-16));
   }
 }
 
@@ -523,3 +523,31 @@
   background: var(--color-mist-violet);
   color: var(--color-accent);
 }
+
+/* 기기 대응(PLAN_기기대응 2-3) — 폭 840 미만(data-size compact · medium)만.
+   좌측 패널 = 서랍(본문 위에 겹침 · 덮개를 누르면 닫힘) · 진행단계 판 = 아래에서 올라오는 판(뒤 화면 계속 조작). */
+.ui-workflow-overlay__scrim {
+  display: none;
+}
+
+html:is([data-size="compact"], [data-size="medium"])
+  .ui-workflow-overlay:has(> .ui-workflow-overlay__panel--title:not(.is-collapsed))
+  > .ui-workflow-overlay__scrim {
+  display: block;
+  position: fixed;
+  inset: var(--spacing-64) 0 0 0;
+  z-index: calc(var(--z-dropdown) - 1);
+  background: rgba(38, 17, 74, 0.35);
+  pointer-events: auto;
+}
+
+html:is([data-size="compact"], [data-size="medium"]) .ui-workflow-overlay__panel--progress {
+  top: auto !important;
+  right: 0 !important;
+  bottom: 0 !important;
+  left: 0 !important;
+  width: auto !important;
+  max-height: 50dvh;
+  flex-direction: column;
+  border-radius: var(--radius-cards) var(--radius-cards) 0 0;
+}
diff --git a/ui_template/ui_template_overlay.ts b/ui_template/ui_template_overlay.ts
index d1201a47c..bc3f46928 100644
--- a/ui_template/ui_template_overlay.ts
+++ b/ui_template/ui_template_overlay.ts
@@ -7,6 +7,7 @@ import { makePanelDraggable } from "./ui_template_overlay_drag";
 // 두 번 받는다(2026-09-06 실측). 그 창구가 짧은 시간 동안 캐시한다.
 import { fetchWorkflowState } from "../A00_Common/b_workflow_nav";
 import { readByKey, writeByKey } from "../A00_Common/b_page_state";
+import { SIZE_BREAKS } from "../A00_Common/device_context";
 
 const TITLE_OVERLAY_STATE_KEY = "frd_workflow_title_overlay_open";
 const PROGRESS_OVERLAY_STATE_KEY = "frd_workflow_progress_overlay_open";
@@ -99,6 +100,8 @@ const NARROW_START_COLLAPSED_MAX_PX = 560;
  * 위에 겹쳐 떠서, 펼친 채로 열면 본문이 가려진 화면부터 보게 된다(2026-09-08).
  */
 function readOpenState(key: string, collapseWhenNarrow = false): boolean {
+  // 폭 840 미만 = 서랍(기기대응 2-3) — 저장값과 상관없이 접은 채로 시작
+  if (collapseWhenNarrow && window.innerWidth < SIZE_BREAKS.expanded) return false;
   const raw = readByKey(key);
   if (raw !== null) return raw !== "false";
   if (!collapseWhenNarrow) return true;
@@ -258,7 +261,11 @@ export function createWorkflowOverlays(options: WorkflowOverlayOptions): Workflo
       options.onOptionsOpenChange,
       options.showProjectName === false ? undefined : createProjectNameTag(),
     );
-    root.append(titlePanel.root);
+    // 좁은 폭 서랍의 덮개 — 누르면 닫힘(보임은 CSS · 폭 840 미만 + 펼침)
+    const scrim = document.createElement("div");
+    scrim.className = "ui-workflow-overlay__scrim";
+    scrim.addEventListener("click", () => titlePanel.setOpen(false));
+    root.append(scrim, titlePanel.root);
     setTitleOpen = titlePanel.setOpen;
   }
   let setProgressOpen = (_isOpen: boolean): void => {};
diff --git a/ui_template/ui_template_side_panels.css b/ui_template/ui_template_side_panels.css
index ca85e4cac..9b1d400d0 100644
--- a/ui_template/ui_template_side_panels.css
+++ b/ui_template/ui_template_side_panels.css
@@ -23,7 +23,7 @@
   flex: none;
   align-self: flex-start;
   /* 높이 · 붙는 자리 = JS(followView) · 처음 한 번 그릴 때까지 */
-  height: calc(100vh - 80px);
+  height: calc(100dvh - 80px);
   /* 손잡이 자리(24) + 틈 */
   margin-left: calc(var(--spacing-24) + var(--spacing-8));
 }
@@ -130,3 +130,40 @@
   overflow: auto;
   overscroll-behavior: contain; /* 몸 끝에서 메인으로 이어 굴리지 않음(85-5) */
 }
+
+/* 기기 대응(PLAN_기기대응 2-3) — 폭 840 미만은 오른쪽 패널을 본문 아래로 쌓음(좁으면 보조 칸은 아래) ·
+   손잡이 줄은 패널 위 가로 · 붙어 따라오기(followView 인라인 높이 · 이동)는 끔 */
+html:is([data-size="compact"], [data-size="medium"]) .ui-side-panels-row {
+  flex-direction: column;
+}
+
+html:is([data-size="compact"], [data-size="medium"]) .ui-side-panels,
+html:is([data-size="compact"], [data-size="medium"]) .ui-side-panels.is-fill,
+html:is([data-size="compact"], [data-size="medium"]) .ui-side-panels.is-collapsed {
+  flex-direction: column;
+  align-self: stretch;
+  width: auto;
+  height: auto !important;
+  margin: var(--spacing-8) 0 0;
+  transform: none !important;
+}
+
+html:is([data-size="compact"], [data-size="medium"]) .ui-side-panels__handles {
+  position: static;
+  flex-direction: row;
+  transform: none;
+}
+
+html:is([data-size="compact"], [data-size="medium"]) .ui-side-panels__panel,
+html:is([data-size="compact"], [data-size="medium"])
+  .ui-side-panels.is-fill
+  > .ui-side-panels__panel {
+  position: relative;
+  inset: auto;
+  width: auto;
+  height: 60dvh;
+}
+
+html:is([data-size="compact"], [data-size="medium"]) .ui-side-panels__grip {
+  display: none;
+}
diff --git a/ui_template/ui_template_workflow_layout.css b/ui_template/ui_template_workflow_layout.css
index de4969814..ea9b80790 100644
--- a/ui_template/ui_template_workflow_layout.css
+++ b/ui_template/ui_template_workflow_layout.css
@@ -1,6 +1,6 @@
 .ui-workflow-layout {
   position: relative;
-  min-height: calc(100vh - var(--spacing-64));
+  min-height: calc(100dvh - var(--spacing-64));
   background: var(--color-bg);
 }
 
@@ -108,7 +108,7 @@
 }
 
 .ui-workflow-layout__body {
-  min-height: calc(100vh - var(--spacing-64));
+  min-height: calc(100dvh - var(--spacing-64));
   transition: padding-left var(--transition-base);
 }
 
@@ -132,7 +132,7 @@
 .ui-workflow-layout__main {
   width: 100%;
   min-width: 0;
-  min-height: calc(100vh - var(--spacing-64));
+  min-height: calc(100dvh - var(--spacing-64));
   overflow: auto;
   background: var(--color-canvas);
 }