diff --git a/M01_MasterData/M01_MasterData_UI_Side.ts b/M01_MasterData/M01_MasterData_UI_Side.ts
index 4a98abae..2e31508d 100644
--- a/M01_MasterData/M01_MasterData_UI_Side.ts
+++ b/M01_MasterData/M01_MasterData_UI_Side.ts
@@ -173,7 +173,7 @@ export function buildSide(
   /** 트리 줄 — 부모는 접기/펴기 · 누를 일이 있는 줄만 밝게 */
   const make: MakeRow = (node, caret, depth, onClick) => {
     const button = el("button", {
-      className: "m01-side__item",
+      className: "m01-side__item ui-sidebar-row",
       attrs: { type: "button" },
       children: [
         el("span", {
@@ -407,7 +407,7 @@ ${first.file}`
 
   const section = (title: string, body: HTMLElement | null): HTMLElement =>
     el("section", {
-      className: "m01-side__group ui-collapsible ui-sidebar-section is-collapsed",
+      className: "m01-side__group ui-collapsible ui-sidebar-section ui-sidebar-card is-collapsed",
       children: [
         el("h3", { className: "ui-collapsible__title", text: title }),
         ...(body ? [body] : []),
@@ -415,7 +415,9 @@ ${first.file}`
     });
 
   const groups = GROUPS.map((group) => {
-    const body = LEAF.includes(group) ? null : el("div", { className: "m01-side__items" });
+    const body = LEAF.includes(group)
+      ? null
+      : el("div", { className: "m01-side__items ui-sidebar-list" });
     if (body) bodies.set(group, body);
     const root = section(L(GROUP_TITLE[group]), body);
     if (!body) {
@@ -442,7 +444,7 @@ ${first.file}`
     return root;
   });
 
-  const logicHost = el("div", { className: "m01-side__items" });
+  const logicHost = el("div", { className: "m01-side__items ui-sidebar-list" });
   const logic = section(tx("Lab_Title"), logicHost);
   logic.querySelector(".ui-collapsible__title")?.addEventListener("click", () => {
     if (!logic.classList.contains("is-collapsed")) return; // 닫을 때는 그대로 둠
@@ -450,7 +452,7 @@ ${first.file}`
     onLogic();
   });
 
-  const comboHost = el("div", { className: "m01-side__items" });
+  const comboHost = el("div", { className: "m01-side__items ui-sidebar-list" });
   const combo = section(tc("Title"), comboHost);
   combo.querySelector(".ui-collapsible__title")?.addEventListener("click", () => {
     if (!combo.classList.contains("is-collapsed")) return;
@@ -458,7 +460,10 @@ ${first.file}`
     onCombo();
   });
 
-  const root = el("div", { className: "m01-side", children: [...groups, logic, combo] });
+  const root = el("div", {
+    className: "m01-side ui-sidebar-panel",
+    children: [...groups, logic, combo],
+  });
   attachCollapsible(root);
   void Promise.all(GROUPS.map(refresh)).catch((error) =>
     showToast(error instanceof Error ? error.message : L("M01_LoadFailed"), "error"),
diff --git a/M01_MasterData/M01_MasterData_UI_Style.css b/M01_MasterData/M01_MasterData_UI_Style.css
index 2df3b62e..6d2983e3 100644
--- a/M01_MasterData/M01_MasterData_UI_Style.css
+++ b/M01_MasterData/M01_MasterData_UI_Style.css
@@ -7,25 +7,8 @@
   padding-top: var(--spacing-8);
 }
 
-/* 왼쪽 패널 — 공용 접기 컨테이너 여덟 */
-.m01-side {
-  display: flex;
-  flex-direction: column;
-  gap: var(--spacing-8);
-}
-
-.m01-side__group {
-  padding: calc(var(--spacing-8) + var(--spacing-4));
-  border-radius: var(--radius-cards);
-  background: var(--color-surface-raised);
-}
-
-.m01-side__group > h3 {
-  margin: 0;
-  color: var(--color-text);
-  font-size: var(--text-body-sm);
-}
-
+/* 왼쪽 패널 카드·목록·줄 모양은 공용 ui-sidebar-*(ui_template_overlay.css) — 여기는
+   M01 전용(환율·요율처럼 하위 목록 없는 leaf 그룹) 만. */
 .m01-side__leaf > h3::after {
   display: none;
 }
@@ -34,39 +17,6 @@
   color: var(--color-accent);
 }
 
-.m01-side__items {
-  display: flex;
-  flex-direction: column;
-  gap: 2px;
-  max-height: 50vh;
-  margin-top: var(--spacing-8);
-  overflow: auto;
-}
-
-.m01-side__item {
-  display: flex;
-  justify-content: space-between;
-  gap: var(--spacing-8);
-  padding: var(--spacing-4) var(--spacing-8);
-  border: 0;
-  border-radius: var(--radius-buttons);
-  background: transparent;
-  color: var(--color-text-body);
-  font: inherit;
-  font-size: var(--text-body-sm);
-  text-align: left;
-  cursor: pointer;
-}
-
-.m01-side__item:hover {
-  background: var(--color-paper);
-}
-
-.m01-side__item.is-active {
-  background: var(--color-mist-violet);
-  color: var(--color-accent);
-}
-
 .m01-tree__kids {
   display: flex;
   flex-direction: column;
diff --git a/M02_MasterTemplete/M02_MasterTemplete_UI_Side.ts b/M02_MasterTemplete/M02_MasterTemplete_UI_Side.ts
index 4150ba47..da78df92 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_UI_Side.ts
+++ b/M02_MasterTemplete/M02_MasterTemplete_UI_Side.ts
@@ -79,17 +79,17 @@ export function buildSide(opt: SideOptions): SideHandle {
 
   const section = (title: string, body: HTMLElement, ...more: HTMLElement[]): HTMLElement =>
     el("section", {
-      className: "m02-side__group ui-collapsible ui-sidebar-section",
+      className: "m02-side__group ui-collapsible ui-sidebar-section ui-sidebar-card is-collapsed",
       children: [el("h3", { className: "ui-collapsible__title", text: title }), body, ...more],
     });
   const bodies = new Map<Kind, HTMLElement>(
     [...KINDS.map((k) => k.kind), STRUCTURE].map((k) => [
       k,
-      el("div", { className: "m02-side__items" }),
+      el("div", { className: "m02-side__items ui-sidebar-list" }),
     ]),
   );
   const listHost = el("div", {
-    className: "m02-side__lists",
+    className: "m02-side__lists ui-sidebar-panel",
     children: [
       section(L("M02_KindTable"), bodies.get("table")!),
       section(
@@ -104,9 +104,12 @@ export function buildSide(opt: SideOptions): SideHandle {
   const btnNew = createButton({ label: L("M02_New"), variant: "filled" });
   const btnCopy = createButton({ label: L("M02_Copy"), variant: "ghost" });
   const btnDel = createButton({ label: L("M02_Delete"), variant: "danger" });
-  const editRow = el("div", { className: "m02-side__row", children: [btnNew, btnCopy, btnDel] });
+  const editRow = el("div", {
+    className: "m02-side__row ui-sidebar-card",
+    children: [btnNew, btnCopy, btnDel],
+  });
 
-  const root = el("div", { className: "m02-side", children: [listHost, editRow] });
+  const root = el("div", { className: "m02-side ui-sidebar-panel", children: [listHost, editRow] });
 
   const isOpen = (info: TemplateInfo): boolean => {
     if (picked) return picked.kind === info.종류 && picked.name === info.이름;
@@ -126,7 +129,7 @@ export function buildSide(opt: SideOptions): SideHandle {
         ...(mine.length
           ? mine.map((info) => {
               const b = el("button", {
-                className: `m02-side__item${isOpen(info) ? " is-active" : ""}`,
+                className: `m02-side__item ui-sidebar-row${isOpen(info) ? " is-active" : ""}`,
                 text: info.이름,
                 attrs: { type: "button", title: info.수정일 },
               });
diff --git a/M02_MasterTemplete/M02_MasterTemplete_UI_Style.css b/M02_MasterTemplete/M02_MasterTemplete_UI_Style.css
index b3c80cb2..cfaaab1f 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_UI_Style.css
+++ b/M02_MasterTemplete/M02_MasterTemplete_UI_Style.css
@@ -1,44 +1,9 @@
-/* M02 마스터 템플릿 — 좌측 패널 + 메인. 색·간격은 공용 토큰. */
+/* M02 마스터 템플릿 — 좌측 패널 + 메인. 카드·목록·줄 모양은 공용 ui-sidebar-*
+   (ui_template_overlay.css, M01 과 한 벌) — 여기는 패널 위 여백만. */
 .m02-side {
-  display: flex;
-  flex-direction: column;
-  gap: var(--spacing-12);
   padding-top: var(--spacing-8);
 }
 
-.m02-side__group {
-  display: flex;
-  flex-direction: column;
-  gap: var(--spacing-4);
-}
-
-.m02-side__items {
-  display: flex;
-  flex-direction: column;
-  gap: var(--spacing-4);
-}
-
-.m02-side__item {
-  width: 100%;
-  padding: var(--spacing-4) var(--spacing-8);
-  border: 0;
-  border-radius: var(--radius-md);
-  background: none;
-  color: inherit;
-  font: inherit;
-  text-align: left;
-  cursor: pointer;
-}
-
-.m02-side__item:hover {
-  background: var(--color-paper);
-}
-
-.m02-side__item.is-active {
-  background: color-mix(in srgb, var(--color-accent) 14%, transparent);
-  font-weight: var(--font-weight-bold);
-}
-
 .m02-side__empty {
   margin: 0;
   color: var(--color-text-muted);
diff --git a/ui_template/ui_template_overlay.css b/ui_template/ui_template_overlay.css
index 236f5941..f7e5c05b 100644
--- a/ui_template/ui_template_overlay.css
+++ b/ui_template/ui_template_overlay.css
@@ -364,3 +364,62 @@
   border-style: solid;
   border-color: color-mix(in srgb, var(--color-border) 25%, var(--color-text-secondary));
 }
+
+/* 좌측 패널 공용 틀(M01·M02 공용) — 접기 카드 모양 · 목록 · 줄 · 고름 표시.
+   전체를 감싸는 패널 간격은 .ui-sidebar-panel, 카드 하나는 .ui-sidebar-card,
+   그 안 목록은 .ui-sidebar-list, 줄은 .ui-sidebar-row(선택 시 is-active). */
+.ui-sidebar-panel {
+  display: flex;
+  flex-direction: column;
+  gap: var(--spacing-8);
+}
+
+.ui-sidebar-card {
+  padding: calc(var(--spacing-8) + var(--spacing-4));
+  border-radius: var(--radius-cards);
+  background: var(--color-surface-raised);
+}
+
+.ui-sidebar-card > .ui-collapsible__title {
+  margin: 0;
+  color: var(--color-text);
+  font-size: var(--text-body-sm);
+}
+
+/* 카드 안에 다시 카드(M02 도면 안 구조물 도면 묶음) — 앞 목록과 간격 */
+.ui-sidebar-card .ui-sidebar-card {
+  margin-top: var(--spacing-8);
+}
+
+.ui-sidebar-list {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+  max-height: 50vh;
+  margin-top: var(--spacing-8);
+  overflow: auto;
+}
+
+.ui-sidebar-row {
+  display: flex;
+  justify-content: space-between;
+  gap: var(--spacing-8);
+  padding: var(--spacing-4) var(--spacing-8);
+  border: 0;
+  border-radius: var(--radius-buttons);
+  background: transparent;
+  color: var(--color-text-body);
+  font: inherit;
+  font-size: var(--text-body-sm);
+  text-align: left;
+  cursor: pointer;
+}
+
+.ui-sidebar-row:hover {
+  background: var(--color-paper);
+}
+
+.ui-sidebar-row.is-active {
+  background: var(--color-mist-violet);
+  color: var(--color-accent);
+}