diff --git a/B06_Section/B06_Section_UI_Page_Structures_Selection.ts b/B06_Section/B06_Section_UI_Page_Structures_Selection.ts
index bdd0f2c51..6ce5b40a9 100644
--- a/B06_Section/B06_Section_UI_Page_Structures_Selection.ts
+++ b/B06_Section/B06_Section_UI_Page_Structures_Selection.ts
@@ -119,17 +119,38 @@ export function wireStructureSelection(
     revealed = field;
     reveal?.(chainageM);
   };
-  panel.root.addEventListener("focusin", (event) => {
-    if (fieldOf(event.target as HTMLElement) !== revealed) revealed = null;
-  });
-  panel.root.addEventListener("change", ({ target: el }) => {
-    const box = (el as HTMLElement).closest<HTMLElement>("fieldset[data-spec-container]");
+  const pickAt = (el: HTMLElement): void => {
+    const box = el.closest<HTMLElement>("fieldset[data-spec-container]");
     const chainageM = panel.currentChainage();
     if (!box || chainageM === null) return;
-    revealAt(chainageM, fieldOf(el as HTMLElement));
+    revealAt(chainageM, fieldOf(el));
     // 단 수 칸은 고른 단을 지킴(단 수 바꿈 뒤 강조 유지) — 새 단은 다시 그린 뒤 아래에서 고름
-    if (!(el as HTMLElement).closest('[data-spec-item="outlet.tiers"]')) pickBox(box);
+    if (!el.closest('[data-spec-item="outlet.tiers"]')) pickBox(box);
+  };
+  // 값을 안 바꾸고 상자를 누르거나 칸에 초점만 줘도 같은 고름(191-1) — 칸 제 동작(누름 · 값 반영) 뒤에
+  // 돌림 · 고름이 폼을 다시 그려 초점 칸이 사라지면 같은 이름 새 칸에 초점을 되살림
+  const pressAt = (el: HTMLElement): void => {
+    setTimeout(() => {
+      const focused = document.activeElement as HTMLElement | null;
+      const named = focused?.closest("[data-spec-item]") && panel.root.contains(focused);
+      const field = named ? fieldOf(focused!) : null;
+      pickAt(el);
+      if (!field || focused!.isConnected) return;
+      // ponytail: 같은 칸 이름 · 같은 태그 첫 칸 — 한 칸에 같은 태그가 여럿이면 그 차례까지 맞출 것
+      [...panel.root.querySelectorAll<HTMLElement>(focused!.tagName)]
+        .find((next) => fieldOf(next) === field)
+        ?.focus();
+    }, 0);
+  };
+  let pointing = false; // 누름이 준 초점은 click 이 맡음 — 초점 고름은 키보드(Tab) 몫
+  panel.root.addEventListener("pointerdown", () => (pointing = true));
+  panel.root.addEventListener("keydown", () => (pointing = false));
+  panel.root.addEventListener("click", ({ target: el }) => pressAt(el as HTMLElement));
+  panel.root.addEventListener("focusin", (event) => {
+    if (fieldOf(event.target as HTMLElement) !== revealed) revealed = null;
+    if (!pointing) pressAt(event.target as HTMLElement);
   });
+  panel.root.addEventListener("change", ({ target: el }) => pickAt(el as HTMLElement));
   // 상자가 새로 서면(단 늘림 · [추가]) 그 상자를 고름 — 같은 시설을 다시 그린 때만
   let painted: { chainageM: number | null; keys: Set<string> } | null = null;
   panel.root.addEventListener("specpaint", () => {
diff --git a/resources/tester/helper_191_1_box_press_pick.cjs b/resources/tester/helper_191_1_box_press_pick.cjs
new file mode 100644
index 000000000..7c1268de8
--- /dev/null
+++ b/resources/tester/helper_191_1_box_press_pick.cjs
@@ -0,0 +1,233 @@
+/* 191-1 좌측 세부 컨테이너 누름 · 초점 = 형상 고름 — 실제 `wireStructureSelection` 을 그 자리에서
+ * 트랜스파일해 흉내 DOM 에서 돌림. 고름(select)이 폼을 다시 그리는 것까지 흉내. 짝 = `test_191_1_box_press_pick.py`.
+ */
+const fs = require("fs");
+const path = require("path");
+const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+
+const ROOT = path.join(__dirname, "..", "..");
+
+class FakeNode {
+  constructor(tag, dataset = {}) {
+    this.tagName = tag.toUpperCase();
+    this.dataset = dataset;
+    this.children = [];
+    this.parentElement = null;
+    this._listeners = {};
+  }
+  append(...kids) {
+    kids.forEach((k) => {
+      k.parentElement = this;
+      this.children.push(k);
+    });
+  }
+  replaceChildren(...kids) {
+    this.children.forEach((k) => (k.parentElement = null));
+    this.children = [];
+    this.append(...kids);
+  }
+  addEventListener(type, fn) {
+    (this._listeners[type] ??= []).push(fn);
+  }
+  matches(sel) {
+    return sel.split(",").some((s) => {
+      const m = s.trim().match(/^(\w+)?(?:\[data-([\w-]+)(?:="([^"]*)")?\])?$/);
+      if (!m) return false;
+      const [, tag, attr, value] = m;
+      if (tag && this.tagName !== tag.toUpperCase()) return false;
+      if (!attr) return true;
+      const key = attr.replace(/-(\w)/g, (_, c) => c.toUpperCase());
+      return value === undefined ? this.dataset[key] !== undefined : this.dataset[key] === value;
+    });
+  }
+  closest(sel) {
+    for (let n = this; n; n = n.parentElement) if (n.matches?.(sel)) return n;
+    return null;
+  }
+  contains(node) {
+    for (let n = node; n; n = n.parentElement) if (n === this) return true;
+    return false;
+  }
+  get isConnected() {
+    return panelRoot.contains(this);
+  }
+  querySelectorAll(sel) {
+    const found = [];
+    const walk = (n) =>
+      n.children.forEach((k) => {
+        if (k.matches(sel)) found.push(k);
+        walk(k);
+      });
+    walk(this);
+    return found;
+  }
+  focus() {
+    globalThis.document.activeElement = this;
+  }
+}
+// 흉내 이벤트 — 대상에서 뿌리까지 거품
+function fire(target, type) {
+  for (let n = target; n; n = n.parentElement)
+    (n._listeners[type] ?? []).forEach((fn) => fn({ type, target }));
+}
+
+globalThis.document = { activeElement: null };
+const timers = [];
+globalThis.setTimeout = (fn) => timers.push(fn);
+const flush = () => {
+  while (timers.length) timers.shift()();
+};
+globalThis.queueMicrotask = (fn) => fn();
+
+// 좌측 폼 — 상자 넷(유입 · 유출 · 관 · 흙막이 둘) · 칸마다 data-spec-item 입력 하나
+const BOXES = [
+  ["inlet", undefined, "inlet.kind"],
+  ["outlet", undefined, "outlet.tiers"],
+  ["pipe", undefined, "pipe.diameter"],
+  ["soil_add", "0", "soil.height"],
+  ["soil_add", "1", "soil.height"],
+];
+const panelRoot = new FakeNode("div");
+let paints = 0;
+function paint() {
+  paints += 1;
+  panelRoot.replaceChildren(
+    ...BOXES.map(([id, index, item]) => {
+      const box = new FakeNode("fieldset", { specContainer: id, specIndex: index });
+      const legend = new FakeNode("legend");
+      const row = new FakeNode("label", { specItem: item });
+      const input = new FakeNode("input");
+      row.append(input);
+      box.append(legend, row);
+      return box;
+    }),
+  );
+}
+paint();
+const boxOf = (id, index) =>
+  panelRoot
+    .querySelectorAll("fieldset")
+    .find((b) => b.dataset.specContainer === id && b.dataset.specIndex === index);
+const inputOf = (id, index) => boxOf(id, index).querySelectorAll("input")[0];
+
+const CH = 120;
+const SECTION = { chainage_m: CH, culvert: {} };
+let highlight = null;
+const log = [];
+const stationControls = {
+  structureSpan: { ownerOf: () => SECTION },
+  inletStructure: { set: () => {}, valueFor: () => "auto" },
+  revetOffset: {
+    select: (chainageM, key) => {
+      highlight = key;
+      log.push(["select", chainageM, key]);
+    },
+    highlightFor: () => highlight,
+  },
+  ford: { select: () => {} },
+  box: { select: () => {} },
+};
+const panel = {
+  root: panelRoot,
+  currentChainage: () => CH,
+  showAtChainage: () => paint(), // 고름이 폼을 다시 그림 — 누른 칸이 사라짐
+  releasePipe: () => {},
+  facility: { onInletStructureChange: () => {}, setInletStructure: () => {} },
+};
+
+function loadSelection() {
+  const file = path.join(ROOT, "B06_Section", "B06_Section_UI_Page_Structures_Selection.ts");
+  const js = ts.transpileModule(fs.readFileSync(file, "utf8"), {
+    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
+  }).outputText;
+  const box = { exports: {} };
+  const stubs = { "./B06_Section_UI_Adjust_Dock": { refreshAdjustSlots: () => {} } };
+  new Function("exports", "module", "require", js)(box.exports, box, (r) => stubs[r]);
+  return box.exports;
+}
+loadSelection().wireStructureSelection(
+  stationControls,
+  () => ({ cross_sections: [SECTION] }),
+  panel,
+  (chainageM, key) => log.push(["remember", chainageM, key]),
+  (chainageM) => log.push(["card", chainageM]),
+  (chainageM) => log.push(["reveal", chainageM]),
+);
+
+const reset = () => {
+  highlight = null;
+  log.length = 0;
+  document.activeElement = null;
+};
+// 마우스 누름 — pointerdown · (칸이면 초점) · click
+function press(target, focus = false) {
+  fire(target, "pointerdown");
+  if (focus) {
+    target.focus();
+    fire(target, "focusin");
+  }
+  fire(target, "click");
+  flush();
+}
+const out = {};
+
+// 값 바꿈(지금 길) — 기준
+reset();
+inputOf("inlet").focus();
+fire(inputOf("inlet"), "change");
+out.change = { highlight, log: [...log] };
+
+// 빈 곳 · 제목 누름 = 같은 결과
+reset();
+press(boxOf("inlet"));
+out.pressBox = { highlight, log: [...log] };
+reset();
+press(boxOf("inlet").children[0]);
+out.pressLegend = { highlight, log: [...log] };
+
+// 입력 칸 누름(초점) — 고름 + 다시 그린 새 칸에 초점
+reset();
+const before = paints;
+const old = inputOf("pipe");
+press(old, true);
+out.pressInput = {
+  highlight,
+  repainted: paints > before,
+  oldConnected: old.isConnected,
+  focusSame: document.activeElement === inputOf("pipe"),
+};
+
+// 키보드(Tab) 초점 = 고름 · 다른 상자 누르면 바뀜
+reset();
+const tabbed = inputOf("soil_add", "1");
+fire(tabbed, "keydown");
+tabbed.focus();
+fire(tabbed, "focusin");
+flush();
+out.tab = { highlight, focusSame: document.activeElement === inputOf("soil_add", "1") };
+press(boxOf("soil_add", "0"));
+out.switched = highlight;
+press(boxOf("outlet"));
+out.switched2 = highlight;
+
+// 누름이 준 초점은 click 전엔 안 고름(누른 칸을 click 전에 지우지 않음)
+reset();
+const target = inputOf("pipe");
+fire(target, "pointerdown");
+target.focus();
+fire(target, "focusin");
+flush();
+out.focusBeforeClick = { highlight, connected: target.isConnected };
+
+// 단 수 칸 누름 = 값 바꿀 때처럼 안 고름
+reset();
+press(inputOf("outlet"), true);
+out.tiers = highlight;
+
+// 같은 상자 거듭 누름 = 한 번만 고름 · 한 번만 넘김
+reset();
+press(boxOf("inlet"));
+press(boxOf("inlet"));
+out.twice = log.filter((e) => e[0] === "select" || e[0] === "reveal").length;
+
+process.stdout.write(JSON.stringify(out));
diff --git a/resources/tester/test_191_1_box_press_pick.py b/resources/tester/test_191_1_box_press_pick.py
new file mode 100644
index 000000000..a8a0914fe
--- /dev/null
+++ b/resources/tester/test_191_1_box_press_pick.py
@@ -0,0 +1,59 @@
+"""191-1 B06 좌측 세부 컨테이너 누름 · 초점 = 그 구조물 형상 고름(값 바꿀 때와 같은 길).
+
+화면 TS 를 흉내 DOM 에서 돌린 값(`helper_191_1_box_press_pick.cjs`).
+"""
+
+import json
+import subprocess
+from pathlib import Path
+
+import pytest
+
+ROOT = Path(__file__).resolve().parents[2]
+HELPER = Path(__file__).parent / "helper_191_1_box_press_pick.cjs"
+NODE_MODULES = ROOT / "config" / "node_modules"
+
+pytestmark = pytest.mark.skipif(not NODE_MODULES.is_dir(), reason="프론트엔드 의존성 미설치")
+
+
+@pytest.fixture(scope="module")
+def out() -> dict:
+    done = subprocess.run(  # noqa: S603 — 고정 실행 파일
+        ["node", str(HELPER)], cwd=str(ROOT), capture_output=True, text=True, encoding="utf-8"
+    )
+    assert done.returncode == 0, done.stderr
+    return json.loads(done.stdout)
+
+
+def test_빈곳_누름_값바꿈과_같은_결과(out: dict) -> None:
+    assert out["change"]["highlight"] == "inlet"
+    assert out["pressBox"] == out["change"]  # 고름 · 카드 · 넘김(스크롤) 차례까지 같음
+
+
+def test_제목_누름_고름(out: dict) -> None:
+    assert out["pressLegend"]["highlight"] == "inlet"
+    assert ["select", 120, "inlet"] in out["pressLegend"]["log"]
+
+
+def test_입력칸_누름_고름_초점_되살림(out: dict) -> None:
+    assert out["pressInput"] == {
+        "highlight": "pipe",
+        "repainted": True,
+        "oldConnected": False,
+        "focusSame": True,
+    }
+
+
+def test_키보드_초점_고름_다른상자_바뀜(out: dict) -> None:
+    assert out["tab"] == {"highlight": "extra1", "focusSame": True}
+    assert out["switched"] == "extra0"
+    assert out["switched2"] == "outlet"
+
+
+def test_누름_초점은_click_뒤(out: dict) -> None:
+    assert out["focusBeforeClick"] == {"highlight": None, "connected": True}
+
+
+def test_단수칸_안고름_거듭누름_한번(out: dict) -> None:
+    assert out["tiers"] is None
+    assert out["twice"] == 2