diff --git a/app/main.py b/app/main.py
index fc7d062..f1784ed 100644
--- a/app/main.py
+++ b/app/main.py
@@ -5,12 +5,22 @@ from typing import Any
 
 from authlib.integrations.starlette_client import OAuth, OAuthError
 from dotenv import load_dotenv
-from fastapi import FastAPI, Request
-from fastapi.responses import HTMLResponse, RedirectResponse
+from fastapi import Depends, FastAPI, HTTPException, Request
+from fastapi.responses import HTMLResponse, JSONResponse, RedirectResponse
 from fastapi.staticfiles import StaticFiles
 from fastapi.templating import Jinja2Templates
+from pydantic import BaseModel
 from starlette.middleware.sessions import SessionMiddleware
 
+from .store import (
+    MODULE_KEYS,
+    SUPER_ADMIN_EMAIL,
+    UserStore,
+    allowed_modules,
+    has_module,
+    is_admin,
+)
+
 # OMS(orderlist) 와 공유하는 세션 키. SessionMiddleware 의 session_cookie 도 동일 이름.
 SESSION_COOKIE_DEFAULT = "session"
 
@@ -20,14 +30,17 @@ load_dotenv()
 BASE_DIR = Path(__file__).resolve().parent
 ALLOWED_DOMAIN = "dbxcorp.co.kr"
 
-# ALLOWED_EMAILS 는 운영 시 .env 의 ALLOWED_EMAILS (쉼표 구분)로 덮어쓸 수 있다.
-# env 가 비어 있으면 아래 기본 목록을 그대로 사용 — 기존 운영 호환.
-DEFAULT_ALLOWED_EMAILS = (
-    "king@dbxcorp.co.kr",
-    "julie@dbxcorp.co.kr",
-    "ellen@dbxcorp.co.kr",
-    "bj@dbxcorp.co.kr",
-)
+
+def _data_dir() -> Path:
+    """사용자/권한 JSON 저장소 위치. 컨테이너 재배포에도 살아남도록
+    DATA_DIR 환경변수로 마운트된 볼륨을 가리킬 수 있다."""
+    override = os.getenv("DATA_DIR", "").strip()
+    if override:
+        return Path(override)
+    return BASE_DIR / "data"
+
+
+DATA_DIR = _data_dir()
 
 
 def env(name: str, default: str = "") -> str:
@@ -35,14 +48,6 @@ def env(name: str, default: str = "") -> str:
     return value if value else default
 
 
-def _parse_email_list(raw: str) -> set[str]:
-    return {e.strip().lower() for e in raw.split(",") if e.strip()}
-
-
-_env_emails = _parse_email_list(env("ALLOWED_EMAILS", ""))
-ALLOWED_EMAILS: set[str] = _env_emails or _parse_email_list(",".join(DEFAULT_ALLOWED_EMAILS))
-
-
 def _require_session_secret() -> str:
     secret = env("SESSION_SECRET_KEY", "")
     if not secret:
@@ -80,6 +85,7 @@ app.mount("/static", StaticFiles(directory=str(BASE_DIR / "static")), name="stat
 
 templates = Jinja2Templates(directory=str(BASE_DIR / "templates"))
 oauth = build_google_oauth()
+user_store = UserStore(DATA_DIR / "users.json")
 
 
 def public_url_for(request: Request, route_name: str) -> str:
@@ -89,11 +95,11 @@ def public_url_for(request: Request, route_name: str) -> str:
     return str(request.url_for(route_name))
 
 
-def get_user(request: Request) -> dict[str, Any] | None:
+def get_session_user(request: Request) -> dict[str, Any] | None:
+    """세션에서 로그인 사용자(이메일/이름/사진) 추출. OMS SSO 호환."""
     user = request.session.get("user")
     if isinstance(user, dict):
         return user
-    # OMS 가 top-level user_email 만 채워놓은 SSO 세션도 인정
     email = request.session.get("user_email")
     if email:
         return {
@@ -104,6 +110,27 @@ def get_user(request: Request) -> dict[str, Any] | None:
     return None
 
 
+def get_current_user_record(request: Request) -> dict[str, Any] | None:
+    """세션 + 저장소를 합쳐 권한이 포함된 사용자 레코드 반환."""
+    sess = get_session_user(request)
+    if not sess:
+        return None
+    rec = user_store.get(sess["email"])
+    if rec is None:
+        # 세션은 살아있지만 저장소에 없음 — 세션 무효화
+        return None
+    return rec
+
+
+def require_admin(request: Request) -> dict[str, Any]:
+    rec = get_current_user_record(request)
+    if rec is None:
+        raise HTTPException(status_code=401, detail="로그인이 필요합니다.")
+    if not is_admin(rec):
+        raise HTTPException(status_code=403, detail="관리자 권한이 필요합니다.")
+    return rec
+
+
 def safe_next(raw: str | None) -> str:
     """Open redirect 방지: 같은 호스트의 절대 경로만 허용."""
     if not raw:
@@ -144,35 +171,79 @@ def is_allowed_google_user(userinfo: dict[str, Any]) -> tuple[bool, str]:
         return False, "Google 계정 이메일 인증이 확인되지 않았습니다."
     if domain != ALLOWED_DOMAIN:
         return False, "회사 Google Workspace 계정만 접속할 수 있습니다."
-    if email not in ALLOWED_EMAILS:
-        return False, "접속 허용 목록에 없는 계정입니다."
     return True, ""
 
 
+# ── ERP 메뉴 정의 ──────────────────────────────────────────────
+# 각 항목: key(권한키), title, description, url(env override), status(ready|preparing), category
+def _menu_items_for(user_rec: dict[str, Any]) -> list[dict[str, Any]]:
+    items = [
+        {
+            "key": "corm",
+            "title": "CORM",
+            "subtitle": "CS · 발주 · 반품 · 코드관리",
+            "description": "고객 응대와 발주/반품, 코드 관리 업무를 한 곳에서 처리합니다.",
+            "url": env("CS_ORDER_URL", "/corm/"),
+            "health_url": "/corm/health/db",
+            "status": "ready",
+            "category": "운영",
+        },
+        {
+            "key": "order",
+            "title": "Order",
+            "subtitle": "고객 주문 데이터베이스",
+            "description": "고객 주문 내역을 조회·검색하고 관련 데이터를 관리합니다.",
+            "url": env("CUSTOMER_ORDER_LIST_URL", "/orderlist/"),
+            "health_url": "/orderlist/health/db",
+            "status": "ready",
+            "category": "운영",
+        },
+        {
+            "key": "expense",
+            "title": "개인경비",
+            "subtitle": "Personal Expense",
+            "description": "법인카드/개인경비 사용 내역을 등록·증빙하고 정산을 신청합니다.",
+            "url": "#",
+            "health_url": None,
+            "status": "preparing",
+            "category": "관리",
+        },
+        {
+            "key": "vacation",
+            "title": "휴가",
+            "subtitle": "Vacation",
+            "description": "연차/반차/특별휴가 신청과 잔여일수, 결재 현황을 확인합니다.",
+            "url": "#",
+            "health_url": None,
+            "status": "preparing",
+            "category": "관리",
+        },
+    ]
+    allowed = allowed_modules(user_rec)
+    for item in items:
+        item["allowed"] = item["key"] in allowed
+    return items
+
+
 @app.get("/", response_class=HTMLResponse)
 async def home(request: Request) -> HTMLResponse:
-    user = get_user(request)
-    if not user:
+    sess = get_session_user(request)
+    if not sess:
         return render_template(request, "login.html")
-
-    menu_items = [
-        {
-            "title": "CS, 발주, 반품, 코드관리",
-            "description": "CS, 발주, 반품, 코드관리 페이지로 이동",
-            "url": env("CS_ORDER_URL", "/corm/"),
-            "health_url": "/corm/health/db",
-        },
-        {
-            "title": "고객 주문 데이터베이스",
-            "description": "고객 주문 데이터베이스 페이지로 이동",
-            "url": env("CUSTOMER_ORDER_LIST_URL", "/orderlist/"),
-            "health_url": "/orderlist/health/db",
-        },
-    ]
+    user_rec = user_store.get(sess["email"])
+    if user_rec is None:
+        # 도메인은 통과했으나 저장소에 없음 — 세션 정리 후 재로그인
+        request.session.clear()
+        return render_template(request, "login.html")
+    menu_items = _menu_items_for(user_rec)
     return render_template(
         request,
         "main.html",
-        {"user": user, "menu_items": menu_items},
+        {
+            "user": user_rec,
+            "menu_items": menu_items,
+            "is_admin": is_admin(user_rec),
+        },
     )
 
 
@@ -186,7 +257,6 @@ async def login(request: Request):
             status_code=500,
         )
 
-    # SSO: ?next= 로 들어온 목적지를 OAuth 콜백 뒤에 사용하기 위해 세션에 임시 보관
     request.session["_post_login_next"] = safe_next(request.query_params.get("next"))
 
     redirect_uri = public_url_for(request, "auth_google")
@@ -226,11 +296,14 @@ async def auth_google(request: Request):
     email = str(userinfo.get("email", "")).lower().strip()
     name = userinfo.get("name") or email
     picture = userinfo.get("picture", "") or ""
+
+    # 저장소에 사용자 등록/갱신 (신규는 권한 0 — 관리자가 부여)
+    user_store.upsert_login(email=email, name=name, picture=picture)
+
     # OMS 와 공유하는 top-level 키 (SSO 계약)
     request.session["user_email"] = email
     request.session["user_name"] = name
     request.session["user_picture"] = picture
-    # 기존 코드/템플릿 호환용 dict
     request.session["user"] = {
         "email": email,
         "name": name,
@@ -249,3 +322,72 @@ async def logout(request: Request) -> RedirectResponse:
 @app.get("/healthz")
 async def healthz() -> dict[str, str]:
     return {"status": "ok"}
+
+
+# ── 관리자 페이지 ──────────────────────────────────────────────
+@app.get("/admin", response_class=HTMLResponse)
+async def admin_page(request: Request) -> HTMLResponse:
+    rec = get_current_user_record(request)
+    if rec is None:
+        return RedirectResponse(url="/login", status_code=303)
+    if not is_admin(rec):
+        return render_template(
+            request,
+            "denied.html",
+            {"reason": "관리자만 접근할 수 있는 페이지입니다."},
+            status_code=403,
+        )
+    users = sorted(user_store.list_all(), key=lambda u: (u["email"] != SUPER_ADMIN_EMAIL, u["email"]))
+    return render_template(
+        request,
+        "admin.html",
+        {
+            "user": rec,
+            "users": users,
+            "module_keys": list(MODULE_KEYS),
+            "super_admin_email": SUPER_ADMIN_EMAIL,
+            "is_admin": True,
+        },
+    )
+
+
+# ── 관리자 API ──────────────────────────────────────────────
+class UpdatePermissionsBody(BaseModel):
+    role: str | None = None
+    modules: dict[str, bool] | None = None
+
+
+@app.get("/api/users")
+async def api_list_users(_: dict[str, Any] = Depends(require_admin)) -> JSONResponse:
+    return JSONResponse({"users": user_store.list_all()})
+
+
+@app.put("/api/users/{email}")
+async def api_update_user(
+    email: str,
+    body: UpdatePermissionsBody,
+    _: dict[str, Any] = Depends(require_admin),
+) -> JSONResponse:
+    try:
+        rec = user_store.update_permissions(
+            email=email, role=body.role, modules=body.modules
+        )
+    except PermissionError as exc:
+        raise HTTPException(status_code=403, detail=str(exc))
+    except KeyError as exc:
+        raise HTTPException(status_code=404, detail=str(exc))
+    except ValueError as exc:
+        raise HTTPException(status_code=400, detail=str(exc))
+    return JSONResponse({"user": rec})
+
+
+@app.delete("/api/users/{email}")
+async def api_delete_user(
+    email: str,
+    _: dict[str, Any] = Depends(require_admin),
+) -> JSONResponse:
+    try:
+        user_store.delete(email)
+    except PermissionError as exc:
+        raise HTTPException(status_code=403, detail=str(exc))
+    return JSONResponse({"ok": True})
diff --git a/app/static/erp.css b/app/static/erp.css
new file mode 100644
index 0000000..4770cd2
--- /dev/null
+++ b/app/static/erp.css
@@ -0,0 +1,595 @@
+/* ════════════════════════════════════════════════════
+   ERP 대시보드 — DESIGN.md 기반 (Monochromatic / shadcn)
+   ════════════════════════════════════════════════════ */
+
+/* Geist 폰트 — CDN. 실패시 Inter / 시스템 폰트 fallback */
+@import url("https://fonts.googleapis.com/css2?family=Geist:wght@400;500;600&family=Geist+Mono&family=Inter:wght@400;500;600&display=swap");
+
+:root {
+  /* Colors */
+  --color-canvas-white: #ffffff;
+  --color-ghost-gray:   #f2f2f2;
+  --color-subtle-ash:   #e5e5e5;
+  --color-midtone-gray: #737373;
+  --color-rich-black:   #0a0a0a;
+  --color-deep-black:   #000000;
+  --color-callout-red:  #c22b10;
+  --color-success-green:#10c22b;
+
+  /* Typography */
+  --font-geist: 'Geist', 'Inter', ui-sans-serif, system-ui, -apple-system,
+                BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
+  --font-geist-mono: 'Geist Mono', ui-monospace, SFMono-Regular, Menlo,
+                     Monaco, Consolas, monospace;
+
+  --text-caption: 12px;
+  --text-body:    14px;
+  --text-heading: 18px;
+  --text-display: 48px;
+  --leading-body: 1.43;
+
+  --tracking-heading: -0.45px;
+  --tracking-display: -2.4px;
+
+  /* Spacing */
+  --sp-4: 4px;  --sp-6: 6px;  --sp-8: 8px;  --sp-10: 10px;
+  --sp-12: 12px; --sp-16: 16px; --sp-20: 20px; --sp-24: 24px;
+  --sp-32: 32px; --sp-40: 40px; --sp-80: 80px;
+
+  /* Radii */
+  --r-pill: 9999px;
+  --r-badge: 26px;
+  --r-card: 14px;
+  --r-input: 10px;
+  --r-btn: 10px;
+
+  /* Shadows */
+  --shadow-card: oklab(0.145 -0.00000143796 0.00000340492 / 0.1) 0px 0px 0px 1px;
+  --shadow-focus: lab(100 0 0) 0px 0px 0px 2px;
+}
+
+/* ── 리셋 ── (auth pages 와 충돌 방지 위해 erp-shell 안에서만 적용) */
+.erp-shell, .erp-shell * { box-sizing: border-box; }
+.erp-shell { margin: 0; padding: 0; }
+
+body.erp-body {
+  margin: 0;
+  font-family: var(--font-geist);
+  font-size: var(--text-body);
+  line-height: var(--leading-body);
+  color: var(--color-rich-black);
+  background: var(--color-canvas-white);
+  -webkit-font-smoothing: antialiased;
+  letter-spacing: 0;
+}
+
+.erp-body a { color: inherit; text-decoration: none; }
+
+/* ── 상단 네비게이션 ── */
+.erp-nav {
+  position: sticky;
+  top: 0;
+  z-index: 50;
+  background: var(--color-canvas-white);
+  border-bottom: 1px solid var(--color-subtle-ash);
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 0 var(--sp-24);
+  height: 56px;
+}
+
+.erp-nav-left {
+  display: flex;
+  align-items: center;
+  gap: var(--sp-16);
+}
+
+.erp-brand {
+  display: flex;
+  align-items: center;
+  gap: var(--sp-8);
+  font-weight: 600;
+  color: var(--color-deep-black);
+  font-size: var(--text-body);
+  letter-spacing: -0.2px;
+}
+
+.erp-brand-logo {
+  height: 36px;
+  width: auto;
+  object-fit: contain;
+}
+
+.erp-brand-divider {
+  width: 1px;
+  height: 20px;
+  background: var(--color-subtle-ash);
+}
+
+.erp-brand-system {
+  font-size: var(--text-body);
+  font-weight: 500;
+  color: var(--color-rich-black);
+}
+
+.erp-nav-right {
+  display: flex;
+  align-items: center;
+  gap: var(--sp-8);
+}
+
+.erp-user-chip {
+  display: inline-flex;
+  align-items: center;
+  gap: var(--sp-8);
+  padding: 4px var(--sp-12) 4px 4px;
+  border: 1px solid var(--color-subtle-ash);
+  border-radius: var(--r-pill);
+  background: var(--color-canvas-white);
+  font-size: var(--text-caption);
+  color: var(--color-rich-black);
+  line-height: 1;
+}
+
+.erp-user-avatar {
+  width: 28px;
+  height: 28px;
+  border-radius: 50%;
+  object-fit: cover;
+  flex-shrink: 0;
+}
+
+.erp-user-avatar-fallback {
+  width: 28px;
+  height: 28px;
+  border-radius: 50%;
+  background: var(--color-deep-black);
+  color: var(--color-canvas-white);
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  font-size: var(--text-caption);
+  font-weight: 600;
+}
+
+.erp-user-info {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+}
+
+.erp-user-name {
+  font-weight: 500;
+  color: var(--color-rich-black);
+  font-size: var(--text-caption);
+}
+
+.erp-user-email {
+  color: var(--color-midtone-gray);
+  font-size: 11px;
+}
+
+/* ── 버튼 ── */
+.erp-btn {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  gap: var(--sp-6);
+  font-family: inherit;
+  font-size: var(--text-caption);
+  font-weight: 500;
+  line-height: 1;
+  border: 1px solid transparent;
+  border-radius: var(--r-btn);
+  cursor: pointer;
+  white-space: nowrap;
+  transition: background 120ms, border-color 120ms, color 120ms;
+}
+
+.erp-btn-primary {
+  background: var(--color-deep-black);
+  color: var(--color-canvas-white);
+  padding: 8px 16px;
+}
+
+.erp-btn-primary:hover {
+  background: var(--color-rich-black);
+}
+
+.erp-btn-ghost {
+  background: transparent;
+  color: var(--color-rich-black);
+  padding: 6px 12px;
+  border-radius: var(--r-pill);
+}
+
+.erp-btn-ghost:hover {
+  background: var(--color-ghost-gray);
+}
+
+.erp-btn-outline {
+  background: var(--color-canvas-white);
+  color: var(--color-rich-black);
+  border-color: var(--color-subtle-ash);
+  padding: 6px 12px;
+}
+
+.erp-btn-outline:hover {
+  background: var(--color-ghost-gray);
+}
+
+.erp-btn-danger {
+  background: transparent;
+  color: var(--color-callout-red);
+  border-color: var(--color-subtle-ash);
+  padding: 6px 12px;
+}
+
+.erp-btn-danger:hover {
+  border-color: var(--color-callout-red);
+  background: rgba(194, 43, 16, 0.04);
+}
+
+/* ── 본문 컨테이너 ── */
+.erp-main {
+  max-width: 1200px;
+  margin: 0 auto;
+  padding: var(--sp-40) var(--sp-24);
+}
+
+.erp-greeting {
+  margin: 0 0 var(--sp-8);
+  font-size: 28px;
+  font-weight: 600;
+  color: var(--color-deep-black);
+  letter-spacing: -0.6px;
+  line-height: 1.2;
+}
+
+.erp-greeting-sub {
+  margin: 0 0 var(--sp-32);
+  color: var(--color-midtone-gray);
+  font-size: var(--text-body);
+}
+
+.erp-section-head {
+  display: flex;
+  align-items: baseline;
+  justify-content: space-between;
+  margin-bottom: var(--sp-16);
+}
+
+.erp-section-title {
+  font-size: var(--text-heading);
+  font-weight: 500;
+  color: var(--color-deep-black);
+  letter-spacing: var(--tracking-heading);
+  line-height: 1.33;
+}
+
+.erp-section-meta {
+  font-size: var(--text-caption);
+  color: var(--color-midtone-gray);
+}
+
+/* ── 카드 그리드 ── */
+.erp-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
+  gap: var(--sp-16);
+}
+
+.erp-card {
+  position: relative;
+  display: flex;
+  flex-direction: column;
+  gap: var(--sp-12);
+  background: var(--color-canvas-white);
+  border-radius: var(--r-card);
+  box-shadow: var(--shadow-card);
+  padding: var(--sp-20);
+  min-height: 180px;
+  transition: box-shadow 120ms, transform 120ms;
+}
+
+.erp-card[data-clickable="true"]:hover {
+  box-shadow: oklab(0.145 -0.00000143796 0.00000340492 / 0.18) 0 0 0 1px,
+              oklab(0.145 -0.00000143796 0.00000340492 / 0.06) 0 8px 24px;
+}
+
+.erp-card[data-clickable="false"] {
+  background: var(--color-ghost-gray);
+}
+
+.erp-card-head {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: var(--sp-8);
+}
+
+.erp-card-title {
+  font-size: var(--text-heading);
+  font-weight: 600;
+  color: var(--color-deep-black);
+  letter-spacing: var(--tracking-heading);
+  line-height: 1.2;
+}
+
+.erp-card-subtitle {
+  font-family: var(--font-geist-mono);
+  font-size: var(--text-caption);
+  color: var(--color-midtone-gray);
+  letter-spacing: 0;
+}
+
+.erp-card-desc {
+  font-size: var(--text-body);
+  color: var(--color-midtone-gray);
+  flex: 1;
+}
+
+.erp-card-foot {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: var(--sp-8);
+  margin-top: auto;
+  padding-top: var(--sp-12);
+  border-top: 1px solid var(--color-subtle-ash);
+}
+
+.erp-card-link {
+  font-size: var(--text-caption);
+  font-weight: 500;
+  color: var(--color-deep-black);
+  display: inline-flex;
+  align-items: center;
+  gap: var(--sp-4);
+}
+
+.erp-card-link svg {
+  transition: transform 120ms;
+}
+
+.erp-card[data-clickable="true"]:hover .erp-card-link svg {
+  transform: translateX(2px);
+}
+
+/* ── 배지 ── */
+.erp-badge {
+  display: inline-flex;
+  align-items: center;
+  gap: var(--sp-6);
+  padding: 2px 8px;
+  font-size: 11px;
+  font-weight: 500;
+  border-radius: var(--r-badge);
+  line-height: 1.4;
+  white-space: nowrap;
+}
+
+.erp-badge-inverse {
+  background: var(--color-deep-black);
+  color: var(--color-canvas-white);
+}
+
+.erp-badge-neutral {
+  background: var(--color-ghost-gray);
+  color: var(--color-rich-black);
+}
+
+.erp-badge-outline {
+  background: transparent;
+  color: var(--color-rich-black);
+  border: 1px solid #a1a1a1;
+}
+
+.erp-badge-success { background: #e6f8e9; color: var(--color-success-green); border: 1px solid #c2efc8; }
+.erp-badge-danger  { background: #fbe9e6; color: var(--color-callout-red);   border: 1px solid #efc6bf; }
+
+.erp-badge-dot::before {
+  content: "";
+  width: 6px;
+  height: 6px;
+  border-radius: 50%;
+  background: currentColor;
+}
+
+/* ── 잠긴 카드 표시 ── */
+.erp-locked-overlay {
+  position: absolute;
+  top: var(--sp-12);
+  right: var(--sp-12);
+  font-size: 11px;
+  color: var(--color-midtone-gray);
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
+}
+
+/* ── 관리자 페이지 ── */
+.erp-admin-toolbar {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: var(--sp-12);
+  margin-bottom: var(--sp-16);
+  flex-wrap: wrap;
+}
+
+.erp-input {
+  font-family: inherit;
+  font-size: var(--text-body);
+  color: var(--color-rich-black);
+  background: var(--color-canvas-white);
+  border: 1px solid var(--color-subtle-ash);
+  border-radius: var(--r-input);
+  padding: 6px var(--sp-10);
+  min-width: 240px;
+}
+
+.erp-input:focus {
+  outline: none;
+  box-shadow: var(--shadow-focus);
+  border-color: var(--color-deep-black);
+}
+
+.erp-table-wrap {
+  border-radius: var(--r-card);
+  box-shadow: var(--shadow-card);
+  background: var(--color-canvas-white);
+  overflow: hidden;
+}
+
+.erp-table {
+  width: 100%;
+  border-collapse: collapse;
+  font-size: var(--text-body);
+}
+
+.erp-table thead th {
+  text-align: left;
+  font-size: var(--text-caption);
+  font-weight: 500;
+  color: var(--color-midtone-gray);
+  background: var(--color-ghost-gray);
+  padding: var(--sp-10) var(--sp-12);
+  border-bottom: 1px solid var(--color-subtle-ash);
+  white-space: nowrap;
+}
+
+.erp-table tbody td {
+  padding: var(--sp-12);
+  border-bottom: 1px solid var(--color-subtle-ash);
+  vertical-align: middle;
+}
+
+.erp-table tbody tr:last-child td {
+  border-bottom: none;
+}
+
+.erp-table tbody tr[data-dirty="true"] {
+  background: #fffbeb;
+}
+
+.erp-user-cell {
+  display: flex;
+  align-items: center;
+  gap: var(--sp-10);
+}
+
+.erp-user-cell .erp-user-avatar,
+.erp-user-cell .erp-user-avatar-fallback {
+  width: 32px;
+  height: 32px;
+  font-size: 13px;
+}
+
+.erp-user-cell-name {
+  font-weight: 500;
+  color: var(--color-rich-black);
+  line-height: 1.2;
+}
+
+.erp-user-cell-email {
+  font-size: 12px;
+  color: var(--color-midtone-gray);
+  line-height: 1.2;
+  margin-top: 2px;
+}
+
+/* shadcn-style 토글 (checkbox 기반) */
+.erp-switch {
+  position: relative;
+  display: inline-block;
+  width: 36px;
+  height: 20px;
+}
+.erp-switch input { opacity: 0; width: 0; height: 0; }
+.erp-switch-slider {
+  position: absolute;
+  inset: 0;
+  background: var(--color-subtle-ash);
+  border-radius: var(--r-pill);
+  cursor: pointer;
+  transition: background 120ms;
+}
+.erp-switch-slider::before {
+  content: "";
+  position: absolute;
+  width: 16px; height: 16px;
+  left: 2px; top: 2px;
+  background: var(--color-canvas-white);
+  border-radius: 50%;
+  transition: transform 120ms;
+  box-shadow: 0 1px 2px rgba(0,0,0,.2);
+}
+.erp-switch input:checked + .erp-switch-slider { background: var(--color-deep-black); }
+.erp-switch input:checked + .erp-switch-slider::before { transform: translateX(16px); }
+.erp-switch input:disabled + .erp-switch-slider {
+  opacity: 0.5;
+  cursor: not-allowed;
+}
+
+/* shadcn-style select */
+.erp-select {
+  font-family: inherit;
+  font-size: var(--text-body);
+  color: var(--color-rich-black);
+  background: var(--color-canvas-white);
+  border: 1px solid var(--color-subtle-ash);
+  border-radius: var(--r-input);
+  padding: 4px var(--sp-10);
+  cursor: pointer;
+}
+
+.erp-select:focus {
+  outline: none;
+  box-shadow: var(--shadow-focus);
+  border-color: var(--color-deep-black);
+}
+
+.erp-select:disabled {
+  background: var(--color-ghost-gray);
+  cursor: not-allowed;
+  color: var(--color-midtone-gray);
+}
+
+/* 토스트 */
+.erp-toast {
+  position: fixed;
+  bottom: 24px;
+  right: 24px;
+  background: var(--color-deep-black);
+  color: var(--color-canvas-white);
+  padding: var(--sp-12) var(--sp-16);
+  border-radius: var(--r-input);
+  font-size: var(--text-body);
+  z-index: 1000;
+  opacity: 0;
+  transform: translateY(8px);
+  transition: opacity 200ms, transform 200ms;
+  pointer-events: none;
+  max-width: 360px;
+}
+.erp-toast[data-visible="true"] {
+  opacity: 1;
+  transform: translateY(0);
+}
+.erp-toast[data-type="error"] {
+  background: var(--color-callout-red);
+}
+
+/* 반응형 */
+@media (max-width: 640px) {
+  .erp-nav { padding: 0 var(--sp-16); height: 52px; }
+  .erp-brand-system { display: none; }
+  .erp-user-info { display: none; }
+  .erp-main { padding: var(--sp-24) var(--sp-16); }
+  .erp-greeting { font-size: 22px; }
+  .erp-table thead { display: none; }
+  .erp-table tbody td { display: block; border: none; padding: 4px var(--sp-12); }
+  .erp-table tbody tr { display: block; padding: var(--sp-12) 0; border-bottom: 1px solid var(--color-subtle-ash); }
+}
diff --git a/app/store.py b/app/store.py
new file mode 100644
index 0000000..bb9ceaf
--- /dev/null
+++ b/app/store.py
@@ -0,0 +1,186 @@
+"""JSON 기반 사용자/권한 저장소.
+
+- app/data/users.json 에 사용자 레코드 저장
+- 동시성: 파일락 대신 process-내 threading.Lock + 원자적 쓰기(temp → rename)
+- 운영시 컨테이너 한 대 가정. 다중 인스턴스 필요해지면 DB 로 교체.
+"""
+from __future__ import annotations
+
+import json
+import os
+import tempfile
+import threading
+from datetime import datetime, timezone
+from pathlib import Path
+from typing import Any, Iterable
+
+# 슈퍼 관리자 — 강등/삭제 불가
+SUPER_ADMIN_EMAIL = "king@dbxcorp.co.kr"
+
+# 시스템에서 지원하는 모듈 키 — 신규 추가시 여기 + 메뉴/템플릿 동시 갱신
+MODULE_KEYS: tuple[str, ...] = ("corm", "order", "expense", "vacation")
+
+
+def _now_iso() -> str:
+    return datetime.now(timezone.utc).isoformat(timespec="seconds")
+
+
+class UserStore:
+    def __init__(self, path: Path):
+        self._path = path
+        self._lock = threading.Lock()
+        self._path.parent.mkdir(parents=True, exist_ok=True)
+        if not self._path.exists():
+            self._write_atomic({"users": {}})
+
+    def _read(self) -> dict[str, Any]:
+        try:
+            with self._path.open("r", encoding="utf-8") as f:
+                data = json.load(f)
+        except (FileNotFoundError, json.JSONDecodeError):
+            data = {"users": {}}
+        if "users" not in data or not isinstance(data["users"], dict):
+            data["users"] = {}
+        return data
+
+    def _write_atomic(self, data: dict[str, Any]) -> None:
+        fd, tmp = tempfile.mkstemp(
+            prefix=".users.", suffix=".json.tmp", dir=str(self._path.parent)
+        )
+        try:
+            with os.fdopen(fd, "w", encoding="utf-8") as f:
+                json.dump(data, f, ensure_ascii=False, indent=2)
+            os.replace(tmp, self._path)
+        except Exception:
+            try:
+                os.unlink(tmp)
+            except OSError:
+                pass
+            raise
+
+    @staticmethod
+    def _default_modules(is_admin: bool) -> dict[str, bool]:
+        return {key: is_admin for key in MODULE_KEYS}
+
+    @staticmethod
+    def _normalize_modules(modules: dict[str, Any] | None, *, is_admin: bool) -> dict[str, bool]:
+        base = UserStore._default_modules(is_admin)
+        if isinstance(modules, dict):
+            for key in MODULE_KEYS:
+                if key in modules:
+                    base[key] = bool(modules[key])
+        if is_admin:
+            for key in MODULE_KEYS:
+                base[key] = True
+        return base
+
+    def get(self, email: str) -> dict[str, Any] | None:
+        email = email.lower().strip()
+        with self._lock:
+            data = self._read()
+            user = data["users"].get(email)
+            if user is None:
+                return None
+            return self._enrich(email, user)
+
+    def list_all(self) -> list[dict[str, Any]]:
+        with self._lock:
+            data = self._read()
+            return [self._enrich(email, rec) for email, rec in data["users"].items()]
+
+    def upsert_login(self, *, email: str, name: str, picture: str) -> dict[str, Any]:
+        """로그인 시 호출. 신규면 생성, 기존이면 last_login/name/picture 갱신."""
+        email = email.lower().strip()
+        is_super = email == SUPER_ADMIN_EMAIL
+        with self._lock:
+            data = self._read()
+            now = _now_iso()
+            existing = data["users"].get(email)
+            if existing is None:
+                rec = {
+                    "email": email,
+                    "name": name,
+                    "picture": picture,
+                    "role": "admin" if is_super else "user",
+                    "modules": self._default_modules(is_admin=is_super),
+                    "created_at": now,
+                    "last_login": now,
+                }
+            else:
+                rec = dict(existing)
+                rec["name"] = name or rec.get("name", email)
+                rec["picture"] = picture or rec.get("picture", "")
+                rec["last_login"] = now
+                # 슈퍼 관리자는 항상 admin + 모든 모듈
+                if is_super:
+                    rec["role"] = "admin"
+                    rec["modules"] = self._default_modules(is_admin=True)
+                else:
+                    rec["modules"] = self._normalize_modules(
+                        rec.get("modules"), is_admin=(rec.get("role") == "admin")
+                    )
+            data["users"][email] = rec
+            self._write_atomic(data)
+            return self._enrich(email, rec)
+
+    def update_permissions(
+        self, *, email: str, role: str | None, modules: dict[str, Any] | None
+    ) -> dict[str, Any]:
+        """관리자가 다른 사용자의 권한을 수정."""
+        email = email.lower().strip()
+        if email == SUPER_ADMIN_EMAIL:
+            raise PermissionError("슈퍼 관리자 계정은 수정할 수 없습니다.")
+        if role is not None and role not in ("admin", "user"):
+            raise ValueError(f"role 값이 잘못되었습니다: {role}")
+        with self._lock:
+            data = self._read()
+            rec = data["users"].get(email)
+            if rec is None:
+                raise KeyError(f"사용자를 찾을 수 없습니다: {email}")
+            if role is not None:
+                rec["role"] = role
+            new_is_admin = rec.get("role") == "admin"
+            rec["modules"] = self._normalize_modules(
+                modules if modules is not None else rec.get("modules"),
+                is_admin=new_is_admin,
+            )
+            data["users"][email] = rec
+            self._write_atomic(data)
+            return self._enrich(email, rec)
+
+    def delete(self, email: str) -> None:
+        email = email.lower().strip()
+        if email == SUPER_ADMIN_EMAIL:
+            raise PermissionError("슈퍼 관리자 계정은 삭제할 수 없습니다.")
+        with self._lock:
+            data = self._read()
+            if email in data["users"]:
+                del data["users"][email]
+                self._write_atomic(data)
+
+    @staticmethod
+    def _enrich(email: str, rec: dict[str, Any]) -> dict[str, Any]:
+        out = dict(rec)
+        out["email"] = email
+        out["is_super_admin"] = email == SUPER_ADMIN_EMAIL
+        out["modules"] = UserStore._normalize_modules(
+            out.get("modules"), is_admin=(out.get("role") == "admin")
+        )
+        return out
+
+
+def is_admin(user_rec: dict[str, Any] | None) -> bool:
+    return bool(user_rec and user_rec.get("role") == "admin")
+
+
+def has_module(user_rec: dict[str, Any] | None, module: str) -> bool:
+    if not user_rec:
+        return False
+    if is_admin(user_rec):
+        return True
+    mods = user_rec.get("modules") or {}
+    return bool(mods.get(module))
+
+
+def allowed_modules(user_rec: dict[str, Any] | None) -> set[str]:
+    return {m for m in MODULE_KEYS if has_module(user_rec, m)}
diff --git a/app/templates/admin.html b/app/templates/admin.html
new file mode 100644
index 0000000..d98d68a
--- /dev/null
+++ b/app/templates/admin.html
@@ -0,0 +1,232 @@
+<!doctype html>
+<html lang="ko">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <title>사용자/권한 관리 — DBX ERP</title>
+    <link rel="stylesheet" href="/static/erp.css" />
+  </head>
+  <body class="erp-body">
+
+    <div class="erp-shell">
+
+      <!-- ── 상단 네비게이션 ── -->
+      <nav class="erp-nav">
+        <div class="erp-nav-left">
+          <a href="/" class="erp-brand">
+            <img src="/static/dbx-logo.png" alt="DBX" class="erp-brand-logo" />
+            <span class="erp-brand-divider"></span>
+            <span class="erp-brand-system">ERP 시스템</span>
+          </a>
+        </div>
+
+        <div class="erp-nav-right">
+          <a class="erp-btn erp-btn-ghost" href="/">← 대시보드</a>
+          <div class="erp-user-chip">
+            {% if user.picture %}
+            <img class="erp-user-avatar" src="{{ user.picture }}" alt="{{ user.name }}" />
+            {% else %}
+            <span class="erp-user-avatar-fallback">{{ user.name[0] | upper }}</span>
+            {% endif %}
+            <div class="erp-user-info">
+              <span class="erp-user-name">{{ user.name }}</span>
+              <span class="erp-user-email">{{ user.email }}</span>
+            </div>
+          </div>
+          <a class="erp-btn erp-btn-outline" href="/logout">로그아웃</a>
+        </div>
+      </nav>
+
+      <main class="erp-main" style="max-width: 1100px;">
+
+        <h1 class="erp-greeting">사용자 / 권한 관리</h1>
+        <p class="erp-greeting-sub">
+          회사 계정으로 로그인한 임직원의 모듈 접근 권한을 관리합니다.
+          토글을 변경한 뒤 <strong>저장</strong> 버튼을 누르세요.
+        </p>
+
+        <div class="erp-admin-toolbar">
+          <input type="search"
+                 id="user-search"
+                 class="erp-input"
+                 placeholder="이메일 또는 이름으로 검색…" />
+          <span class="erp-section-meta" id="user-count">총 {{ users | length }}명</span>
+        </div>
+
+        <div class="erp-table-wrap">
+          <table class="erp-table" id="users-table">
+            <thead>
+              <tr>
+                <th style="width: 28%;">사용자</th>
+                <th style="width: 11%;">역할</th>
+                {% for key in module_keys %}
+                <th style="text-align:center; width: 9%;">
+                  {% if key == 'corm' %}CORM
+                  {% elif key == 'order' %}Order
+                  {% elif key == 'expense' %}개인경비
+                  {% elif key == 'vacation' %}휴가
+                  {% else %}{{ key }}{% endif %}
+                </th>
+                {% endfor %}
+                <th style="width: 13%;">최근 로그인</th>
+                <th style="width: 12%; text-align: right;">동작</th>
+              </tr>
+            </thead>
+            <tbody>
+              {% for u in users %}
+              <tr data-email="{{ u.email }}" data-dirty="false"
+                  data-super="{{ 'true' if u.is_super_admin else 'false' }}">
+                <td>
+                  <div class="erp-user-cell">
+                    {% if u.picture %}
+                    <img class="erp-user-avatar" src="{{ u.picture }}" alt="{{ u.name }}" />
+                    {% else %}
+                    <span class="erp-user-avatar-fallback">{{ (u.name or u.email)[0] | upper }}</span>
+                    {% endif %}
+                    <div>
+                      <div class="erp-user-cell-name">
+                        {{ u.name or u.email }}
+                        {% if u.is_super_admin %}
+                        <span class="erp-badge erp-badge-inverse" style="margin-left:6px;">슈퍼관리자</span>
+                        {% endif %}
+                      </div>
+                      <div class="erp-user-cell-email">{{ u.email }}</div>
+                    </div>
+                  </div>
+                </td>
+                <td>
+                  <select class="erp-select" data-field="role"
+                          {% if u.is_super_admin %}disabled{% endif %}>
+                    <option value="user"  {% if u.role == 'user'  %}selected{% endif %}>user</option>
+                    <option value="admin" {% if u.role == 'admin' %}selected{% endif %}>admin</option>
+                  </select>
+                </td>
+                {% for key in module_keys %}
+                <td style="text-align:center;">
+                  <label class="erp-switch">
+                    <input type="checkbox"
+                           data-field="module"
+                           data-module="{{ key }}"
+                           {% if u.modules[key] %}checked{% endif %}
+                           {% if u.is_super_admin or u.role == 'admin' %}disabled{% endif %} />
+                    <span class="erp-switch-slider"></span>
+                  </label>
+                </td>
+                {% endfor %}
+                <td style="font-size:12px; color: var(--color-midtone-gray);">
+                  {{ (u.last_login or '')[:16].replace('T', ' ') }}
+                </td>
+                <td style="text-align: right;">
+                  <button class="erp-btn erp-btn-primary" data-action="save"
+                          {% if u.is_super_admin %}disabled{% endif %}>저장</button>
+                </td>
+              </tr>
+              {% endfor %}
+            </tbody>
+          </table>
+        </div>
+
+        <p class="erp-section-meta" style="margin-top: var(--sp-16);">
+          ※ <strong>{{ super_admin_email }}</strong> 은(는) 슈퍼 관리자이므로 권한을 변경할 수 없습니다.
+          관리자(admin) 역할로 지정된 사용자에게는 모든 모듈 권한이 자동 부여됩니다.
+        </p>
+
+      </main>
+    </div>
+
+    <div id="toast" class="erp-toast" role="status" aria-live="polite"></div>
+
+    <script>
+      const tbody = document.querySelector("#users-table tbody");
+      const searchInput = document.getElementById("user-search");
+      const userCountEl = document.getElementById("user-count");
+      const toastEl = document.getElementById("toast");
+
+      function markDirty(tr) { tr.setAttribute("data-dirty", "true"); }
+      function clearDirty(tr) { tr.setAttribute("data-dirty", "false"); }
+
+      function showToast(msg, type) {
+        toastEl.textContent = msg;
+        toastEl.dataset.type = type || "info";
+        toastEl.dataset.visible = "true";
+        clearTimeout(showToast._t);
+        showToast._t = setTimeout(() => {
+          toastEl.dataset.visible = "false";
+        }, 2400);
+      }
+
+      // 역할 변경시 모듈 토글 활성/비활성 갱신
+      function syncModuleSwitches(tr) {
+        const isSuper = tr.dataset.super === "true";
+        const role = tr.querySelector("select[data-field='role']").value;
+        const adminRole = role === "admin";
+        tr.querySelectorAll("input[data-field='module']").forEach((cb) => {
+          if (isSuper || adminRole) {
+            cb.checked = true;
+            cb.disabled = true;
+          } else {
+            cb.disabled = false;
+          }
+        });
+      }
+
+      tbody.addEventListener("change", (e) => {
+        const tr = e.target.closest("tr");
+        if (!tr) return;
+        if (e.target.dataset.field === "role") {
+          syncModuleSwitches(tr);
+        }
+        markDirty(tr);
+      });
+
+      tbody.addEventListener("click", async (e) => {
+        const btn = e.target.closest("button[data-action='save']");
+        if (!btn) return;
+        const tr = btn.closest("tr");
+        const email = tr.dataset.email;
+        const role = tr.querySelector("select[data-field='role']").value;
+        const modules = {};
+        tr.querySelectorAll("input[data-field='module']").forEach((cb) => {
+          modules[cb.dataset.module] = cb.checked;
+        });
+
+        btn.disabled = true;
+        btn.textContent = "저장 중…";
+        try {
+          const res = await fetch(`/api/users/${encodeURIComponent(email)}`, {
+            method: "PUT",
+            headers: { "Content-Type": "application/json" },
+            credentials: "same-origin",
+            body: JSON.stringify({ role, modules }),
+          });
+          if (!res.ok) {
+            const data = await res.json().catch(() => ({}));
+            throw new Error(data.detail || `HTTP ${res.status}`);
+          }
+          clearDirty(tr);
+          showToast(`${email} 저장 완료`, "info");
+        } catch (err) {
+          showToast(`저장 실패: ${err.message}`, "error");
+        } finally {
+          btn.disabled = false;
+          btn.textContent = "저장";
+        }
+      });
+
+      // 검색
+      searchInput.addEventListener("input", () => {
+        const q = searchInput.value.toLowerCase().trim();
+        let visible = 0;
+        tbody.querySelectorAll("tr").forEach((tr) => {
+          const text = tr.textContent.toLowerCase();
+          const match = !q || text.includes(q);
+          tr.style.display = match ? "" : "none";
+          if (match) visible++;
+        });
+        userCountEl.textContent = q
+          ? `검색 결과 ${visible}명`
+          : `총 ${tbody.querySelectorAll("tr").length}명`;
+      });
+    </script>
+  </body>
+</html>
diff --git a/app/templates/main.html b/app/templates/main.html
index e25ffb3..4bdc30c 100644
--- a/app/templates/main.html
+++ b/app/templates/main.html
@@ -3,153 +3,169 @@
   <head>
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
-    <title>업무 포털 — DBX Corporation</title>
-    <link rel="stylesheet" href="/static/styles.css" />
+    <title>ERP 시스템 — DBX Corporation</title>
+    <link rel="stylesheet" href="/static/erp.css" />
   </head>
-  <body>
+  <body class="erp-body">
 
-    <!-- ── 헤더 ── -->
-    <header class="header">
-      <div class="header-brand">
-        <img src="/static/dbx-logo.png" alt="DBX Corporation" class="header-logo-img" />
-        <span class="header-portal">업무 포털</span>
-      </div>
+    <div class="erp-shell">
 
-      <div class="header-user">
-        <div class="header-user-info">
-          <span class="header-user-name">{{ user.name }}</span>
-          <span class="header-user-email">{{ user.email }}</span>
+      <!-- ── 상단 네비게이션 ── -->
+      <nav class="erp-nav">
+        <div class="erp-nav-left">
+          <a href="/" class="erp-brand">
+            <img src="/static/dbx-logo.png" alt="DBX" class="erp-brand-logo" />
+            <span class="erp-brand-divider"></span>
+            <span class="erp-brand-system">ERP 시스템</span>
+          </a>
         </div>
-        {% if user.picture %}
-        <img class="header-avatar" src="{{ user.picture }}" alt="{{ user.name }}" />
-        {% else %}
-        <div class="header-avatar-placeholder">
-          {{ user.name[0] | upper }}
-        </div>
-        {% endif %}
-        <a class="btn-logout" href="/logout">
-          <svg width="14" height="14" viewBox="0 0 24 24" fill="none"
-               stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round">
-            <path d="M9 21H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h4"/>
-            <polyline points="16 17 21 12 16 7"/>
-            <line x1="21" y1="12" x2="9" y2="12"/>
-          </svg>
-          <span>로그아웃</span>
-        </a>
-      </div>
-    </header>
 
-    <!-- ── 히어로 배너 ── -->
-    <section class="hero">
-      <p class="hero-greeting">안녕하세요, {{ user.name }}님 👋</p>
-      <p class="hero-sub">오늘도 좋은 하루 되세요.</p>
-      <p class="hero-date" id="today-date"></p>
-    </section>
+        <div class="erp-nav-right">
+          {% if is_admin %}
+          <a class="erp-btn erp-btn-ghost" href="/admin">
+            <svg width="14" height="14" viewBox="0 0 24 24" fill="none"
+                 stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+              <path d="M12 2 4 6v6c0 5 3.4 9.4 8 10 4.6-.6 8-5 8-10V6l-8-4Z"/>
+            </svg>
+            관리자
+          </a>
+          {% endif %}
 
-    <!-- ── 메뉴 콘텐츠 ── -->
-    <main class="content">
-      <div class="section-header">
-        <h2 class="section-title">업무 바로가기</h2>
-        <span class="section-count">{{ menu_items | length }}</span>
-      </div>
-
-      <div class="card-grid">
-        {% for item in menu_items %}
-        <a class="menu-card" href="{{ item.url }}" target="_blank" rel="noopener noreferrer"
-           {% if item.health_url %}data-health-url="{{ item.health_url }}"{% endif %}>
-          <div class="card-icon">
-            {% if loop.index == 1 %}
-            <!-- 클립보드 / 발주 아이콘 -->
-            <svg width="24" height="24" viewBox="0 0 24 24" fill="none"
-                 stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
-              <path d="M16 4h2a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2H6a2 2 0 0 1-2-2V6a2 2 0 0 1 2-2h2"/>
-              <rect x="8" y="2" width="8" height="4" rx="1" ry="1"/>
-              <line x1="8" y1="13" x2="16" y2="13"/>
-              <line x1="8" y1="17" x2="14" y2="17"/>
-            </svg>
-            {% elif loop.index == 2 %}
-            <!-- 리스트 / 주문 아이콘 -->
-            <svg width="24" height="24" viewBox="0 0 24 24" fill="none"
-                 stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
-              <line x1="8" y1="6" x2="21" y2="6"/>
-              <line x1="8" y1="12" x2="21" y2="12"/>
-              <line x1="8" y1="18" x2="21" y2="18"/>
-              <line x1="3" y1="6" x2="3.01" y2="6"/>
-              <line x1="3" y1="12" x2="3.01" y2="12"/>
-              <line x1="3" y1="18" x2="3.01" y2="18"/>
-            </svg>
-            {% elif loop.index == 3 %}
-            <!-- 차트 아이콘 -->
-            <svg width="24" height="24" viewBox="0 0 24 24" fill="none"
-                 stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
-              <line x1="18" y1="20" x2="18" y2="10"/>
-              <line x1="12" y1="20" x2="12" y2="4"/>
-              <line x1="6"  y1="20" x2="6"  y2="14"/>
-              <line x1="2"  y1="20" x2="22" y2="20"/>
-            </svg>
+          <div class="erp-user-chip">
+            {% if user.picture %}
+            <img class="erp-user-avatar" src="{{ user.picture }}" alt="{{ user.name }}" />
             {% else %}
-            <!-- 기본 링크 아이콘 -->
-            <svg width="24" height="24" viewBox="0 0 24 24" fill="none"
-                 stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
-              <circle cx="12" cy="12" r="10"/>
-              <line x1="12" y1="8" x2="12" y2="16"/>
-              <line x1="8"  y1="12" x2="16" y2="12"/>
-            </svg>
+            <span class="erp-user-avatar-fallback">{{ user.name[0] | upper }}</span>
             {% endif %}
+            <div class="erp-user-info">
+              <span class="erp-user-name">{{ user.name }}</span>
+              <span class="erp-user-email">{{ user.email }}</span>
+            </div>
           </div>
 
-          <div class="card-body">
-            <p class="card-title">
-              {{ item.title }}
-              {% if item.health_url %}
-              <span class="status-badge" data-status="checking" aria-live="polite">확인 중</span>
+          <a class="erp-btn erp-btn-outline" href="/logout">
+            <svg width="13" height="13" viewBox="0 0 24 24" fill="none"
+                 stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+              <path d="M9 21H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h4"/>
+              <polyline points="16 17 21 12 16 7"/>
+              <line x1="21" y1="12" x2="9" y2="12"/>
+            </svg>
+            로그아웃
+          </a>
+        </div>
+      </nav>
+
+      <!-- ── 본문 ── -->
+      <main class="erp-main">
+
+        <h1 class="erp-greeting">안녕하세요, {{ user.name }}님</h1>
+        <p class="erp-greeting-sub" id="erp-greeting-sub"></p>
+
+        <div class="erp-section-head">
+          <h2 class="erp-section-title">업무 모듈</h2>
+          <span class="erp-section-meta">{{ menu_items | length }}개 모듈</span>
+        </div>
+
+        <div class="erp-grid">
+          {% for item in menu_items %}
+          {% set clickable = item.allowed and item.status == 'ready' %}
+          {% if clickable %}
+          <a class="erp-card" href="{{ item.url }}"
+             target="_blank" rel="noopener noreferrer"
+             data-clickable="true"
+             {% if item.health_url %}data-health-url="{{ item.health_url }}"{% endif %}>
+          {% else %}
+          <div class="erp-card" data-clickable="false">
+          {% endif %}
+
+            <div class="erp-card-head">
+              <div>
+                <div class="erp-card-title">{{ item.title }}</div>
+                <div class="erp-card-subtitle">{{ item.subtitle }}</div>
+              </div>
+              {% if item.status == 'preparing' %}
+                <span class="erp-badge erp-badge-neutral">준비중</span>
+              {% elif not item.allowed %}
+                <span class="erp-badge erp-badge-outline">권한 없음</span>
+              {% elif item.health_url %}
+                <span class="erp-badge erp-badge-neutral erp-badge-dot"
+                      data-health-url="{{ item.health_url }}" data-status="checking">확인 중</span>
+              {% else %}
+                <span class="erp-badge erp-badge-inverse">활성</span>
               {% endif %}
-            </p>
-            <p class="card-desc">{{ item.description }}</p>
-          </div>
+            </div>
 
-          <div class="card-footer">
-            <span class="card-link">
-              바로가기
-              <svg width="14" height="14" viewBox="0 0 24 24" fill="none"
-                   stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round">
-                <line x1="5" y1="12" x2="19" y2="12"/>
-                <polyline points="12 5 19 12 12 19"/>
-              </svg>
-            </span>
+            <p class="erp-card-desc">{{ item.description }}</p>
+
+            <div class="erp-card-foot">
+              <span class="erp-badge erp-badge-outline">{{ item.category }}</span>
+              {% if clickable %}
+              <span class="erp-card-link">
+                바로가기
+                <svg width="13" height="13" viewBox="0 0 24 24" fill="none"
+                     stroke="currentColor" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round">
+                  <line x1="5" y1="12" x2="19" y2="12"/>
+                  <polyline points="12 5 19 12 12 19"/>
+                </svg>
+              </span>
+              {% elif item.status == 'preparing' %}
+              <span class="erp-card-link" style="color: var(--color-midtone-gray);">출시 예정</span>
+              {% else %}
+              <span class="erp-card-link" style="color: var(--color-midtone-gray);">접근 불가</span>
+              {% endif %}
+            </div>
+
+          {% if clickable %}
+          </a>
+          {% else %}
           </div>
-        </a>
-        {% endfor %}
-      </div>
-    </main>
+          {% endif %}
+          {% endfor %}
+        </div>
+
+      </main>
+    </div>
 
     <script>
-      // 오늘 날짜 표시
-      const d = new Date();
-      const days = ["일요일","월요일","화요일","수요일","목요일","금요일","토요일"];
-      document.getElementById("today-date").textContent =
-        d.getFullYear() + "년 " + (d.getMonth()+1) + "월 " + d.getDate() + "일 " + days[d.getDay()];
+      // 인사말 — 시간대별
+      (function() {
+        const d = new Date();
+        const h = d.getHours();
+        let greet = "오늘도 좋은 하루 되세요.";
+        if (h < 5)        greet = "늦은 시간까지 수고 많으세요.";
+        else if (h < 12)  greet = "활기찬 아침입니다.";
+        else if (h < 18)  greet = "오후 업무 화이팅입니다.";
+        else              greet = "오늘도 고생 많으셨습니다.";
+        const days = ["일","월","화","수","목","금","토"];
+        const dateStr = `${d.getFullYear()}.${String(d.getMonth()+1).padStart(2,"0")}.${String(d.getDate()).padStart(2,"0")} (${days[d.getDay()]})`;
+        document.getElementById("erp-greeting-sub").textContent = `${dateStr} · ${greet}`;
+      })();
 
-      // 헬스 배지 — data-health-url 이 있는 카드만 갱신
-      async function refreshHealthBadges() {
-        const cards = document.querySelectorAll(".menu-card[data-health-url]");
-        await Promise.all(Array.from(cards).map(async (card) => {
-          const url = card.getAttribute("data-health-url");
-          const badge = card.querySelector(".status-badge");
-          if (!badge) return;
+      // 헬스 배지 — data-health-url 이 있는 배지만 갱신
+      async function refreshHealth() {
+        const badges = document.querySelectorAll(".erp-badge[data-health-url]");
+        await Promise.all(Array.from(badges).map(async (badge) => {
+          const url = badge.getAttribute("data-health-url");
           try {
             const res = await fetch(url, { cache: "no-store", credentials: "omit" });
-            const ok = res.ok;
-            badge.dataset.status = ok ? "online" : "offline";
-            badge.textContent = ok ? "온라인" : "오프라인";
+            if (res.ok) {
+              badge.dataset.status = "online";
+              badge.className = "erp-badge erp-badge-success erp-badge-dot";
+              badge.textContent = "온라인";
+            } else {
+              badge.dataset.status = "offline";
+              badge.className = "erp-badge erp-badge-danger erp-badge-dot";
+              badge.textContent = "오프라인";
+            }
           } catch {
             badge.dataset.status = "offline";
+            badge.className = "erp-badge erp-badge-danger erp-badge-dot";
             badge.textContent = "오프라인";
           }
         }));
       }
-      refreshHealthBadges();
-      setInterval(refreshHealthBadges, 30000);
+      refreshHealth();
+      setInterval(refreshHealth, 30000);
     </script>
   </body>
 </html>
diff --git a/docker-compose.local.yml b/docker-compose.local.yml
index 0fc7dd7..6c348e2 100644
--- a/docker-compose.local.yml
+++ b/docker-compose.local.yml
@@ -8,3 +8,10 @@ services:
       - "8080:8000"
     env_file:
       - .env.local
+    environment:
+      DATA_DIR: /data
+    volumes:
+      - dbx-main-data:/data
+
+volumes:
+  dbx-main-data:
diff --git a/docker-compose.yml b/docker-compose.yml
index a5b5113..786ccc2 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -9,3 +9,11 @@ services:
       - "8080:8000"
     env_file:
       - .env
+    environment:
+      # 사용자/권한 JSON 저장소 — 볼륨에 영구 보관
+      DATA_DIR: /data
+    volumes:
+      - dbx-main-data:/data
+
+volumes:
+  dbx-main-data: