diff --git a/A00_Common/spreadsheet/spreadsheet_tabs.ts b/A00_Common/spreadsheet/spreadsheet_tabs.ts
index f4cc8a551..efdb0fe82 100644
--- a/A00_Common/spreadsheet/spreadsheet_tabs.ts
+++ b/A00_Common/spreadsheet/spreadsheet_tabs.ts
@@ -12,7 +12,7 @@
  * ========================================================================== */
 
 import { createMapContextMenu, type MapContextMenuItem } from "@ui/ui_template_context_menu";
-import { el, showConfirmDialog, showToast } from "@ui/ui_template_elements";
+import { createIconButton, el, showConfirmDialog, showToast } from "@ui/ui_template_elements";
 import { emptySheet } from "./spreadsheet_commands";
 import { hideSheet, unhideSheet } from "./spreadsheet_sheet_extra";
 import { st } from "./spreadsheet_text";
@@ -164,11 +164,13 @@ export function mountTabs(ctx: SpreadsheetContext): PartHandle {
   }
 
   function addButton(): HTMLElement {
-    const btn = el("button", {
-      className: "ss-tabs__add",
-      text: "+",
-      attrs: { type: "button", title: st("SheetAdd") },
+    const btn = createIconButton({
+      glyph: "+",
+      title: st("SheetAdd"),
+      variant: "outline",
+      size: 22,
     });
+    btn.classList.add("ss-tabs__add");
     btn.addEventListener("click", () => {
       const name = nextSheetName(ctx.book, "Sheet");
       const sheet = emptySheet(nextSheetId(ctx.book), name);
diff --git a/A00_Common/spreadsheet/spreadsheet_toolbar.css b/A00_Common/spreadsheet/spreadsheet_toolbar.css
index fc0ffa84f..92606abe7 100644
--- a/A00_Common/spreadsheet/spreadsheet_toolbar.css
+++ b/A00_Common/spreadsheet/spreadsheet_toolbar.css
@@ -27,24 +27,10 @@
   border-right: 0;
 }
 
-.ss-toolbar .ui-btn {
-  padding: 4px 8px;
-  font-size: 0.82rem;
-}
-
+/* 단추 · 칸 = 부품 단추(24) · 입력 · 고르기(28) — 여기는 켬 · 폭만(553-6) */
 .ss-toolbar .ui-btn.is-on {
-  background: var(--color-mist-violet);
-  box-shadow: inset 0 0 0 1px var(--color-royal-amethyst);
-}
-
-.ss-toolbar__select {
-  height: 28px;
-  padding: 0 4px;
-  border: 1px solid var(--color-border);
-  border-radius: var(--radius-sm);
-  background: var(--color-canvas);
-  color: var(--color-text-body);
-  font-size: 0.8rem;
+  background: var(--color-accent-soft);
+  box-shadow: inset 0 0 0 1px var(--color-accent);
 }
 
 .ss-toolbar__select option {
@@ -53,14 +39,7 @@
 }
 
 .ss-toolbar__input {
-  height: 28px;
   width: 72px;
-  padding: 0 4px;
-  border: 1px solid var(--color-border);
-  border-radius: var(--radius-sm);
-  background: var(--color-canvas);
-  color: var(--color-text-body);
-  font-size: 0.8rem;
 }
 
 .ss-toolbar__input--font {
@@ -85,15 +64,6 @@
   cursor: pointer;
 }
 
-.ss-toolbar__clear {
-  padding: 0 4px;
-  border: 0;
-  background: none;
-  color: var(--color-text-secondary);
-  font-size: 0.72rem;
-  cursor: pointer;
-}
-
 .ss-toolbar__popover {
   position: absolute;
   top: calc(100% + 4px);
@@ -138,7 +108,7 @@
 .ss-toolbar__unit-label {
   margin-bottom: var(--spacing-4);
   color: var(--color-text-muted);
-  font-size: 0.72rem;
+  font-size: var(--text-caption);
 }
 
 .ss-toolbar__unit-grid {
@@ -147,9 +117,9 @@
   gap: var(--spacing-4);
 }
 
-.ss-toolbar__unit-btn {
+.ss-toolbar__unit-grid > .ui-btn[data-size] {
   min-width: 0;
-  padding: 4px 2px;
+  padding-inline: 2px;
 }
 
 .ss-toolbar__hint {
@@ -232,15 +202,6 @@
   font: inherit;
 }
 
-.ss-tabs__add {
-  padding: 2px 8px;
-  border: 1px solid var(--color-border);
-  border-radius: var(--radius-sm);
-  background: var(--color-canvas);
-  color: var(--color-text-secondary);
-  cursor: pointer;
-}
-
 /* ── 우클릭 메뉴(그리드 · 탭 공용, `ui_template_context_menu.ts`) — 모양 · 자리는 공용 `.ui-ctx-menu` ── */
 
 .ss__context-menu-item.is-danger {
@@ -261,7 +222,7 @@
   display: flex;
   align-items: center;
   justify-content: center;
-  background: rgb(0 0 0 / 35%);
+  background: var(--color-scrim);
 }
 
 .ss-comment-editor__panel {
diff --git a/A00_Common/spreadsheet/spreadsheet_toolbar.ts b/A00_Common/spreadsheet/spreadsheet_toolbar.ts
index d9fccdb72..7ebda5a32 100644
--- a/A00_Common/spreadsheet/spreadsheet_toolbar.ts
+++ b/A00_Common/spreadsheet/spreadsheet_toolbar.ts
@@ -10,7 +10,7 @@
  * 스스로 구독하지 않음. `destroy()` 는 부품을 뗄 때.
  * ========================================================================== */
 
-import { createButton, el } from "@ui/ui_template_elements";
+import { createButton, createIconButton, el, setUiSize } from "@ui/ui_template_elements";
 import { confirmMerge } from "./spreadsheet_actions";
 import { colName, rangeToA1, toA1 } from "./spreadsheet_address";
 import { shownHAlign, shownVAlign } from "./spreadsheet_cellstyle";
@@ -144,14 +144,25 @@ export function mountToolbar(ctx: SpreadsheetContext): PartHandle {
   };
 
   // ── 되돌리기 · 다시 ────────────────────────────────────────────────────
-  const undoBtn = createButton({ label: "↶", variant: "ghost", onClick: () => ctx.undo() });
+  const undoBtn = createButton({
+    label: "↶",
+    variant: "ghost",
+    size: 24,
+    onClick: () => ctx.undo(),
+  });
   undoBtn.title = st("Undo");
-  const redoBtn = createButton({ label: "↷", variant: "ghost", onClick: () => ctx.redo() });
+  const redoBtn = createButton({
+    label: "↷",
+    variant: "ghost",
+    size: 24,
+    onClick: () => ctx.redo(),
+  });
   redoBtn.title = st("Redo");
   // 손가락 — 우클릭 대신 활성 칸 메뉴를 여는 ⋯(기기대응 3-5 · 터치 모드에서만 보임)
   const moreBtn = createButton({
     label: "⋯",
     variant: "ghost",
+    size: 24,
     onClick: () => {
       const { r, c } = ctx.selection.활성;
       const { box } = ctx.grid.editorSlot(r, c);
@@ -175,7 +186,7 @@ export function mountToolbar(ctx: SpreadsheetContext): PartHandle {
 
   // ── 글꼴 · 크기 ────────────────────────────────────────────────────────
   const fontInput = el("input", {
-    className: "ss-toolbar__input ss-toolbar__input--font",
+    className: "ui-input ss-toolbar__input ss-toolbar__input--font",
     attrs: { list: "ss-toolbar-fonts", "aria-label": st("FontName") },
   }) as HTMLInputElement;
   const fontList = el("datalist", {
@@ -187,7 +198,7 @@ export function mountToolbar(ctx: SpreadsheetContext): PartHandle {
   fontInput.addEventListener("change", commitFont);
 
   const sizeInput = el("input", {
-    className: "ss-toolbar__input ss-toolbar__input--size",
+    className: "ui-input ss-toolbar__input ss-toolbar__input--size",
     attrs: { type: "number", min: "1", max: "409", step: "0.5", "aria-label": st("FontSize") },
   }) as HTMLInputElement;
   sizeInput.addEventListener("change", () => {
@@ -196,13 +207,13 @@ export function mountToolbar(ctx: SpreadsheetContext): PartHandle {
   });
 
   // ── 굵게 · 기울임 · 밑줄 · 취소선 ──────────────────────────────────────
-  const boldBtn = createButton({ label: "B", variant: "ghost" });
+  const boldBtn = createButton({ label: "B", variant: "ghost", size: 24 });
   boldBtn.title = st("Bold");
-  const italicBtn = createButton({ label: "I", variant: "ghost" });
+  const italicBtn = createButton({ label: "I", variant: "ghost", size: 24 });
   italicBtn.title = st("Italic");
-  const underlineBtn = createButton({ label: "U", variant: "ghost" });
+  const underlineBtn = createButton({ label: "U", variant: "ghost", size: 24 });
   underlineBtn.title = st("Underline");
-  const strikeBtn = createButton({ label: "S", variant: "ghost" });
+  const strikeBtn = createButton({ label: "S", variant: "ghost", size: 24 });
   strikeBtn.title = st("Strike");
   const toggles: [HTMLButtonElement, keyof CellStyle][] = [
     [boldBtn, "굵게"],
@@ -220,11 +231,8 @@ export function mountToolbar(ctx: SpreadsheetContext): PartHandle {
     attrs: { type: "color", "aria-label": st("TextColor"), value: "#000000" },
   }) as HTMLInputElement;
   textColor.addEventListener("change", () => patch({ 글자색: textColor.value }));
-  const textColorClear = el("button", {
-    className: "ss-toolbar__clear",
-    text: "✕",
-    attrs: { type: "button", title: st("ColorClear") },
-  });
+  const textColorClear = createIconButton({ glyph: "✕", title: st("ColorClear"), size: 18 });
+  textColorClear.classList.add("ss-toolbar__clear");
   textColorClear.addEventListener("click", () => patch({ 글자색: null }));
 
   const fillColor = el("input", {
@@ -232,11 +240,8 @@ export function mountToolbar(ctx: SpreadsheetContext): PartHandle {
     attrs: { type: "color", "aria-label": st("FillColor"), value: "#ffffff" },
   }) as HTMLInputElement;
   fillColor.addEventListener("change", () => patch({ 채움: fillColor.value }));
-  const fillColorClear = el("button", {
-    className: "ss-toolbar__clear",
-    text: "✕",
-    attrs: { type: "button", title: st("ColorClear") },
-  });
+  const fillColorClear = createIconButton({ glyph: "✕", title: st("ColorClear"), size: 18 });
+  fillColorClear.classList.add("ss-toolbar__clear");
   fillColorClear.addEventListener("click", () => patch({ 채움: null }));
 
   // ── 가로 · 세로 정렬 · 줄 바꿈 ─────────────────────────────────────────
@@ -255,7 +260,7 @@ export function mountToolbar(ctx: SpreadsheetContext): PartHandle {
   } as const;
 
   const hAlignSelect = el("select", {
-    className: "ss-toolbar__select",
+    className: "ui-select ss-toolbar__select",
     attrs: { "aria-label": st("HAlign") },
     children: (Object.keys(HALIGN_LABEL) as (keyof typeof HALIGN_LABEL)[]).map((v) =>
       el("option", { attrs: { value: v }, text: HALIGN_LABEL[v] }),
@@ -266,7 +271,7 @@ export function mountToolbar(ctx: SpreadsheetContext): PartHandle {
   );
 
   const vAlignSelect = el("select", {
-    className: "ss-toolbar__select",
+    className: "ui-select ss-toolbar__select",
     attrs: { "aria-label": st("VAlign") },
     children: (Object.keys(VALIGN_LABEL) as (keyof typeof VALIGN_LABEL)[]).map((v) =>
       el("option", { attrs: { value: v }, text: VALIGN_LABEL[v] }),
@@ -276,11 +281,11 @@ export function mountToolbar(ctx: SpreadsheetContext): PartHandle {
     patch({ 세로: vAlignSelect.value as CellStyle["세로"] }),
   );
 
-  const wrapBtn = createButton({ label: st("Wrap"), variant: "ghost" });
+  const wrapBtn = createButton({ label: st("Wrap"), variant: "ghost", size: 24 });
   wrapBtn.addEventListener("click", () => patch({ 줄바꿈: !wrapBtn.classList.contains("is-on") }));
 
   // ── 병합 ───────────────────────────────────────────────────────────────
-  const mergeBtn = createButton({ label: st("Merge"), variant: "ghost" });
+  const mergeBtn = createButton({ label: st("Merge"), variant: "ghost", size: 24 });
   mergeBtn.addEventListener("click", async () => {
     const range = ctx.selection.범위[0];
     if (!range) return;
@@ -290,10 +295,10 @@ export function mountToolbar(ctx: SpreadsheetContext): PartHandle {
   });
 
   // ── 테두리 ───────────────────────────────────────────────────────────
-  const borderBtn = createButton({ label: st("Border"), variant: "ghost" });
+  const borderBtn = createButton({ label: st("Border"), variant: "ghost", size: 24 });
   const borderPop = el("div", { className: "ss-toolbar__popover", attrs: { hidden: "true" } });
   const lineSelect = el("select", {
-    className: "ss-toolbar__select",
+    className: "ui-select ss-toolbar__select",
     children: BORDER_LINES.map((v) => el("option", { attrs: { value: v }, text: v })),
   }) as HTMLSelectElement;
   const lineColor = el("input", {
@@ -314,6 +319,7 @@ export function mountToolbar(ctx: SpreadsheetContext): PartHandle {
     const b = createButton({
       label,
       variant: "ghost",
+      size: 24,
       onClick: () => {
         applyBorderPreset(preset);
         borderPop.hidden = true;
@@ -393,7 +399,7 @@ export function mountToolbar(ctx: SpreadsheetContext): PartHandle {
 
   // ── 숫자 형식 ─────────────────────────────────────────────────────────
   const numfmtInput = el("input", {
-    className: "ss-toolbar__input ss-toolbar__input--numfmt",
+    className: "ui-input ss-toolbar__input ss-toolbar__input--numfmt",
     attrs: {
       list: "ss-toolbar-numfmt",
       "aria-label": st("NumberFormat"),
@@ -414,7 +420,7 @@ export function mountToolbar(ctx: SpreadsheetContext): PartHandle {
   numfmtInput.addEventListener("change", () => patch({ 형식: numfmtInput.value || null }));
 
   // ── 단위 기호 ─────────────────────────────────────────────────────────
-  const unitBtn = createButton({ label: `${st("Unit")} ▾`, variant: "ghost" });
+  const unitBtn = createButton({ label: `${st("Unit")} ▾`, variant: "ghost", size: 24 });
   const unitPop = el("div", {
     className: "ss-toolbar__popover ss-toolbar__unit-pop",
     attrs: { hidden: "true" },
@@ -472,7 +478,12 @@ export function mountToolbar(ctx: SpreadsheetContext): PartHandle {
     recentGrid.textContent = "";
     recentSection.hidden = list.length === 0;
     for (const u of list) {
-      const b = createButton({ label: u, variant: "ghost", onClick: () => insertUnit(u) });
+      const b = createButton({
+        label: u,
+        variant: "ghost",
+        size: 24,
+        onClick: () => insertUnit(u),
+      });
       b.className += " ss-toolbar__unit-btn";
       recentGrid.append(b);
     }
@@ -483,7 +494,12 @@ export function mountToolbar(ctx: SpreadsheetContext): PartHandle {
   for (const [labelKey, items] of UNIT_GROUPS) {
     const grid = el("div", { className: "ss-toolbar__unit-grid" });
     for (const u of items) {
-      const b = createButton({ label: u, variant: "ghost", onClick: () => insertUnit(u) });
+      const b = createButton({
+        label: u,
+        variant: "ghost",
+        size: 24,
+        onClick: () => insertUnit(u),
+      });
       b.className += " ss-toolbar__unit-btn";
       grid.append(b);
     }
@@ -536,6 +552,8 @@ export function mountToolbar(ctx: SpreadsheetContext): PartHandle {
     group(unitBtn, unitPop),
     formulaHint,
   );
+  // 칸 크기 단(553-6) — 단추 24 · 칸 28
+  for (const f of root.querySelectorAll<HTMLElement>(".ui-input, .ui-select")) setUiSize(f, 28);
 
   function refresh(): void {
     undoBtn.disabled = !ctx.history.canUndo();