diff --git a/B05_Profile/B05_Profile_UI_Markers.ts b/B05_Profile/B05_Profile_UI_Markers.ts
index f6f4e1918..e0709d413 100644
--- a/B05_Profile/B05_Profile_UI_Markers.ts
+++ b/B05_Profile/B05_Profile_UI_Markers.ts
@@ -397,6 +397,8 @@ export function createRouteMarkers(
     sprite.position.copy(position);
     sprite.position.y += 3.4;
     sprite.renderOrder = 10;
+    // 라벨은 읽기용 — 띠 가운데 위에 떠 누름을 가로채지 않음(232-1)
+    sprite.raycast = () => undefined;
     return sprite;
   }
 
@@ -477,6 +479,8 @@ export function createRouteMarkers(
     head.rotation.x = Math.PI; // 꼭짓점이 아래(측점)를 가리키게 뒤집는다.
     head.position.y = PIN_HEIGHT + 1.7;
     group.add(beam, head);
+    // 핀은 표시만 — 누름을 가로채지 않음(띠 가운데 누름이 핀에 먼저 맞았음 · 232-1)
+    beam.raycast = head.raycast = () => undefined;
     group.renderOrder = 9;
     group.visible = false;
     interactionGroup.add(group);
@@ -520,7 +524,9 @@ export function createRouteMarkers(
     deleteSelected,
     selectObject(object: THREE.Object3D | undefined) {
       if (typeof object?.userData.stationId === "string") {
-        selectStation(object.userData.stationId);
+        // 같은 띠 다시 누름 = 풂(232-1)
+        const id = object.userData.stationId as string;
+        selectStation(id === selectedStationId ? null : id);
         selectionListener?.(null);
         return;
       }
diff --git a/B05_Profile/B05_Profile_UI_Structure_Pick_Session.ts b/B05_Profile/B05_Profile_UI_Structure_Pick_Session.ts
index 84ce34729..631e51bff 100644
--- a/B05_Profile/B05_Profile_UI_Structure_Pick_Session.ts
+++ b/B05_Profile/B05_Profile_UI_Structure_Pick_Session.ts
@@ -58,6 +58,7 @@ export function wireStructurePick(
   coverable?: (entry: StructureInstance) => boolean,
 ): void {
   controls.onPick = (pick: StructurePick | null): void => {
+    // null = 같은 부재 다시 누름(풂) — 빈 곳 누름은 여기까지 안 옴(232-1)
     if (!pick) {
       selectDesign(projectId, NO_SELECTION, { from: "b05" });
       selectStation(null);
diff --git a/B05_Profile/B05_Profile_UI_Viewer.ts b/B05_Profile/B05_Profile_UI_Viewer.ts
index fde2c5705..bd13562a0 100644
--- a/B05_Profile/B05_Profile_UI_Viewer.ts
+++ b/B05_Profile/B05_Profile_UI_Viewer.ts
@@ -259,6 +259,7 @@ export function createRouteViewer(): RouteViewer {
     camera: cameraRig.camera,
     group: () => corridor.group(),
     blocked: () => markerInput.blocked(),
+    pressedMarker: () => markerInput.pressedMarker(),
   });
   // 회전·줌 중심을 커서 아래 지형 지점으로 (B04 뷰어들과 공용 유틸).
   // 마커를 잡고 있는 동안에는 회전을 넘겨 드래그 이동이 우선하게 한다.
diff --git a/B05_Profile/B05_Profile_UI_Viewer_Marker_Input.ts b/B05_Profile/B05_Profile_UI_Viewer_Marker_Input.ts
index afeb0ab9b..7ab032e7e 100644
--- a/B05_Profile/B05_Profile_UI_Viewer_Marker_Input.ts
+++ b/B05_Profile/B05_Profile_UI_Viewer_Marker_Input.ts
@@ -24,6 +24,8 @@ export interface MarkerPointerControls {
   beginMoveSelected: () => void;
   /** 마커를 잡고 있거나 이동 대기 중인가 — 회전 중심 유틸이 회전을 넘길 판단에 쓴다. */
   blocked: () => boolean;
+  /** 마지막 누름이 마커 · 측점 띠에 맞았나 — 3D 구조물 고름이 그 누름을 「빈 곳」으로 읽지 않게(232-1). */
+  pressedMarker: () => boolean;
   /** 등록한 캔버스 이벤트를 모두 떼어낸다. */
   dispose: () => void;
 }
@@ -43,6 +45,7 @@ export function bindMarkerPointerControls(options: {
   let dragCandidate: { id: string; pointerId: number; x: number; y: number } | null = null;
   let draggingMarker = false;
   let lastDragPoint: { x: number; y: number; z: number } | null = null;
+  let downOnMarker = false;
 
   /** 화면 좌표 → 정규화 장치 좌표(-1~1). */
   function pointerOf(clientX: number, clientY: number): THREE.Vector2 {
@@ -86,7 +89,14 @@ export function bindMarkerPointerControls(options: {
   function markerHit(event: PointerEvent): THREE.Object3D | undefined {
     const raycaster = new THREE.Raycaster();
     raycaster.setFromCamera(pointerOf(event.clientX, event.clientY), camera());
-    return raycaster.intersectObject(markers.group, true)[0]?.object;
+    // 숨은 것(꺼 둔 측점선 · 라벨)은 누름을 가로채지 않음 — three 레이캐스트는 visible 을 안 봄(232-1)
+    return raycaster.intersectObject(markers.group, true).find((entry) => shown(entry.object))
+      ?.object;
+  }
+
+  function shown(object: THREE.Object3D | null): boolean {
+    for (let node = object; node; node = node.parent) if (!node.visible) return false;
+    return true;
   }
 
   function finishMarkerInteraction(selectCandidate: boolean): void {
@@ -105,6 +115,7 @@ export function bindMarkerPointerControls(options: {
   function handlePointerDown(event: PointerEvent): void {
     if (event.button !== 0) return;
     const hit = markerHit(event);
+    downOnMarker = !!hit;
     const pointId = markers.pointIdForObject(hit);
     if (pointId) {
       dragCandidate = {
@@ -184,6 +195,7 @@ export function bindMarkerPointerControls(options: {
       movingSelected = true;
     },
     blocked: () => dragCandidate !== null || draggingMarker || movingSelected,
+    pressedMarker: () => downOnMarker,
     dispose: () => {
       canvas.removeEventListener("dragover", handleDragOver);
       canvas.removeEventListener("drop", handleDrop);
diff --git a/B05_Profile/B05_Profile_UI_Viewer_Structure_Pick.ts b/B05_Profile/B05_Profile_UI_Viewer_Structure_Pick.ts
index 1fab0d9d3..b48cd5216 100644
--- a/B05_Profile/B05_Profile_UI_Viewer_Structure_Pick.ts
+++ b/B05_Profile/B05_Profile_UI_Viewer_Structure_Pick.ts
@@ -20,7 +20,7 @@ export interface StructurePick {
 }
 
 export interface StructurePickControls {
-  /** 3D에서 골랐을 때 알린다. null = 빈 곳(지형·리본) 클릭으로 해제. */
+  /** 3D에서 골랐을 때 알린다. null = 같은 부재 다시 누름으로 해제(빈 곳 누름은 안 알림 · 232-1). */
   onPick?: (pick: StructurePick | null) => void;
   /** 좌측 패널·종단 그래프에서 고른 것을 3D 강조에 반영한다(부재키 없이 측점만). */
   selectAtChainage: (chainageM: number | null) => void;
@@ -47,8 +47,10 @@ export function bindStructurePick(options: {
   group: () => THREE.Object3D | null;
   /** 마커를 잡고 있거나 이동 대기 중인가 — 참이면 구조물 선택을 건너뛴다. */
   blocked: () => boolean;
+  /** 이 누름이 마커 · 측점 띠에 맞았나 — 참이면 그 누름은 마커 몫(빈 곳 누름 아님 · 232-1). */
+  pressedMarker?: () => boolean;
 }): StructurePickControls {
-  const { canvas, camera, group, blocked } = options;
+  const { canvas, camera, group, blocked, pressedMarker } = options;
 
   let selected: StructurePick | null = null;
   let down: { x: number; y: number; pointerId: number } | null = null;
@@ -94,7 +96,7 @@ export function bindStructurePick(options: {
     });
   }
 
-  /** 화면 좌표 아래 **제일 앞 메쉬**의 신원표. 리본·지형이 앞이면 null(=해제)이다. */
+  /** 화면 좌표 아래 **제일 앞 메쉬**의 신원표. 리본·지형이 앞이면 null(=빈 곳)이다. */
   function pickAt(clientX: number, clientY: number): StructurePick | null {
     const root = group();
     if (!root || !root.visible) return null;
@@ -120,7 +122,7 @@ export function bindStructurePick(options: {
 
   function handleDown(event: PointerEvent): void {
     down =
-      event.button === 0 && !blockedBeforeDown && !blocked()
+      event.button === 0 && !blockedBeforeDown && !blocked() && !pressedMarker?.()
         ? { x: event.clientX, y: event.clientY, pointerId: event.pointerId }
         : null;
   }
@@ -131,7 +133,14 @@ export function bindStructurePick(options: {
     if (!start || event.pointerId !== start.pointerId) return;
     if (Math.hypot(event.clientX - start.x, event.clientY - start.y) > CLICK_SLOP_PX) return;
     if (blocked()) return;
-    selected = pickAt(event.clientX, event.clientY);
+    const pick = pickAt(event.clientX, event.clientY);
+    // 빈 곳(지형 · 리본) 누름은 고름을 안 풂(08-05 사용자 결정 · 232-1) — 같은 부재 다시 누름만 풂
+    if (!pick) return;
+    const same =
+      selected !== null &&
+      Math.abs(selected.chainageM - pick.chainageM) < 0.01 &&
+      selected.key === pick.key;
+    selected = same ? null : pick;
     applyHighlight();
     controls.onPick?.(selected);
   }
diff --git a/resources/tester/helper_232_1_3d_press.cjs b/resources/tester/helper_232_1_3d_press.cjs
new file mode 100644
index 000000000..26ebb5991
--- /dev/null
+++ b/resources/tester/helper_232_1_3d_press.cjs
@@ -0,0 +1,213 @@
+/* 232-1 3D 누름 길 통째 — 진짜 마커(MK3) · 마커 입력(MI) · 3D 부재 고름(SPK) · 선택 동기화(SY) ·
+ * 넘김(PKS) · 고름 한 칸(DSel) 을 three + 가짜 캔버스로 한 누름(창 캡처 → 캔버스 듣개 차례)씩 돌림.
+ * 배선은 `B05_Profile_UI_Viewer.ts` · `design_view_profile.ts` 와 같은 꼴. 표준출력 JSON 한 벌.
+ */
+const fs = require("fs");
+const path = require("path");
+const ROOT = path.join(__dirname, "..", "..");
+const NM = path.join(ROOT, "config", "node_modules");
+const ts = require(path.join(NM, "typescript"));
+const THREE = require(path.join(NM, "three", "build", "three.cjs"));
+
+function loadTs(file, stubs = {}) {
+  const js = ts.transpileModule(fs.readFileSync(path.join(ROOT, file), "utf8"), {
+    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
+  }).outputText;
+  const box = { exports: {} };
+  const localRequire = (request) => {
+    if (request === "three") return THREE;
+    if (stubs[request]) return stubs[request];
+    throw new Error(`stub 없음: ${request}`);
+  };
+  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
+  return box.exports;
+}
+
+/* ── 창 · 캔버스 흉내(듣개 차례 = 창 캡처 → 캔버스 등록 차례) ── */
+const windowListeners = [];
+globalThis.window = {
+  addEventListener: (type, fn) => windowListeners.push({ type, fn }),
+  removeEventListener: (type, fn) => {
+    const i = windowListeners.findIndex((entry) => entry.type === type && entry.fn === fn);
+    if (i >= 0) windowListeners.splice(i, 1);
+  },
+};
+globalThis.document = { createElement: () => ({ getContext: () => null, width: 0, height: 0 }) };
+const canvasListeners = [];
+const canvas = {
+  addEventListener: (type, fn) => canvasListeners.push({ type, fn }),
+  removeEventListener() {},
+  getBoundingClientRect: () => ({ left: 0, top: 0, width: 400, height: 400 }),
+  setPointerCapture() {},
+  hasPointerCapture: () => false,
+  releasePointerCapture() {},
+};
+function fire(type, clientX, clientY) {
+  const event = {
+    type,
+    button: 0,
+    pointerId: 1,
+    clientX,
+    clientY,
+    preventDefault() {},
+    stopPropagation() {},
+  };
+  for (const entry of windowListeners.filter((e) => e.type === type)) entry.fn(event);
+  for (const entry of canvasListeners.filter((e) => e.type === type)) entry.fn(event);
+}
+
+/* ── 진짜 모듈 ── */
+const store = new Map();
+const DSel = loadTs("A00_Common/design/design_selection.ts", {
+  "../b_page_state": {
+    readState: (key, pid) => store.get(`${key}:${pid}`) ?? null,
+    writeState: (key, value, pid) => store.set(`${key}:${pid}`, value),
+  },
+});
+const MK3 = loadTs("B05_Profile/B05_Profile_UI_Markers.ts", {
+  "@util/common_util_svg": {
+    inferStationInterval: () => 20,
+    stationLabel: (chainage) => `0+${chainage}`,
+  },
+});
+const MI = loadTs("B05_Profile/B05_Profile_UI_Viewer_Marker_Input.ts", {
+  "./B05_Profile_UI_Markers": MK3,
+});
+const SPK = loadTs("B05_Profile/B05_Profile_UI_Viewer_Structure_Pick.ts");
+const SY = loadTs("B05_Profile/B05_Profile_UI_Selection.ts", {
+  "../A00_Common/design/design_selection": DSel,
+  "./B05_Profile_UI_IrregularStations": {
+    irregularStationId: (id) => `irregular:${id}`,
+    isPipeStation: (s) => s.origin === "pipe",
+  },
+});
+const PKS = loadTs("B05_Profile/B05_Profile_UI_Structure_Pick_Session.ts", {
+  "../A00_Common/design/design_selection": DSel,
+});
+
+/* ── 장면: 지형 범위 · 위에서 내려다보는 직교 카메라 ── */
+const PID = "p232";
+const bounds = { x: [0, 200], y: [0, 200], z: [0, 10] };
+const scene = new THREE.Scene();
+const camera = new THREE.OrthographicCamera(-100, 100, 100, -100, 0.1, 500);
+camera.position.set(0, 200, 0);
+camera.up.set(0, 0, -1);
+camera.lookAt(0, 0, 0);
+camera.updateProjectionMatrix();
+camera.updateMatrixWorld(true);
+const clientOf = (x, y, z = 5) => {
+  const p = MK3.modelToScene({ x, y, z }, bounds).project(camera);
+  return [((p.x + 1) / 2) * 400, ((1 - p.y) / 2) * 400];
+};
+
+const markers = MK3.createRouteMarkers(scene, () => bounds);
+const STATIONS = [100, 120].map((at) => ({
+  station_id: `s${at}`,
+  chainage_m: at,
+  center_x: at,
+  center_y: 100,
+  center_z: 5,
+  frame: { left_xy: [0, 1] },
+  kind: "regular",
+}));
+markers.renderStationLines(STATIONS, 3);
+
+// 코리도 — 리본(신원표 없음 · 「빈 곳」) + 부재 하나(측점 160 · inlet)
+const corridor = new THREE.Group();
+const ribbon = new THREE.Mesh(
+  new THREE.BoxGeometry(400, 0.1, 400),
+  new THREE.MeshLambertMaterial(),
+);
+ribbon.position.y = -0.5;
+const member = new THREE.Mesh(new THREE.BoxGeometry(4, 2, 4), new THREE.MeshLambertMaterial());
+member.position.copy(MK3.modelToScene({ x: 160, y: 160, z: 6 }, bounds));
+member.userData = { chainageM: 160, kind: "pipe", key: "inlet" };
+corridor.add(ribbon, member);
+scene.add(corridor);
+scene.updateMatrixWorld(true);
+
+const markerInput = MI.bindMarkerPointerControls({
+  canvas,
+  camera: () => camera,
+  controls: { enabled: true },
+  markers,
+  getTerrain: () => null,
+  getBounds: () => bounds,
+});
+const structurePick = SPK.bindStructurePick({
+  canvas,
+  camera: () => camera,
+  group: () => corridor,
+  blocked: () => markerInput.blocked(),
+  pressedMarker: () => markerInput.pressedMarker(),
+});
+
+/* ── 종단 보기 배선 흉내(design_view_profile) ── */
+let graph = null;
+let form = null;
+let syncing = false;
+const sync = SY.createSelectionSync({
+  stations: () => [],
+  isSyncing: () => syncing,
+  setSyncing: (v) => (syncing = v),
+  selectMarker: (id) => markers.selectStation(id),
+  selectGraph: (id) => (graph = id),
+  selectSidebar: (at) => (form = at),
+  openAtStation: (at) => (form = at),
+  selectBasin() {},
+  markStation() {},
+  selectStructure3D: (at) => structurePick.selectAtChainage(at),
+  regularChainage: (id) => STATIONS.find((s) => s.station_id === id)?.chainage_m,
+  remember: (at) =>
+    DSel.selectDesign(PID, at === null ? DSel.NO_SELECTION : { chainageM: at, structureId: null }),
+});
+markers.onStationSelectionChange((id) => {
+  graph = id;
+  sync.syncIrregularSelection(id);
+});
+PKS.wireStructurePick(
+  structurePick,
+  PID,
+  {
+    resolveAt: () => ({ structureId: null }),
+    hasSelection: () => form !== null,
+    selectAt: (sel) => (form = sel.chainageM),
+  },
+  sync.selectStationOfPipe,
+);
+
+/* ── 읽기 ── */
+const bar = (id) => markers.group.children[1].children.find((o) => o.userData.stationId === id);
+const pin = () => markers.group.children.find((g) => g.renderOrder === 9);
+const state = () => ({
+  s100: "#" + bar("s100").material.color.getHexString(),
+  s120: "#" + bar("s120").material.color.getHexString(),
+  pin: pin().visible,
+  session: DSel.readSelection(PID),
+  graph,
+  member: member.material.emissive.getHex() !== 0,
+});
+const press = (xy) => {
+  fire("pointerdown", ...xy);
+  const down = state();
+  fire("pointerup", ...xy);
+  return { down, up: state() };
+};
+
+const out = {};
+const edge120 = clientOf(120, 102); // 띠 끝쪽(가운데 핀 · 라벨 자리 밖)
+const center120 = clientOf(120, 100);
+const empty = clientOf(40, 40); // 리본만
+out.bar = press(edge120);
+out.empty = press(empty);
+out.again = press(edge120); // 같은 띠 다시 = 풂
+out.center = press(center120); // 숨은 핀 · 라벨이 있던 가운데
+out.memberPick = press(clientOf(160, 160));
+out.memberEmpty = press(empty);
+out.memberAgain = press(clientOf(160, 160)); // 같은 부재 다시 = 풂
+press(edge120);
+markers.setStationLinesVisible(false);
+out.hiddenLines = press(clientOf(100, 102)); // 꺼 둔 측점선은 누름을 안 가로챔
+out.hiddenPressedMarker = markerInput.pressedMarker();
+
+process.stdout.write(JSON.stringify(out));
diff --git a/resources/tester/test_232_1_3d_press.py b/resources/tester/test_232_1_3d_press.py
new file mode 100644
index 000000000..ea08494ef
--- /dev/null
+++ b/resources/tester/test_232_1_3d_press.py
@@ -0,0 +1,91 @@
+# -*- coding: utf-8 -*-
+"""232-1 3D 띠 강조 바로 꺼짐(요구 104 · 조사 AF a1 · a2) — 3D 누름 길 통째.
+
+까닭: 띠 누름을 마커 듣개가 켜고(누를 때) 3D 부재 고름이 뗄 때 「빈 곳 누름」으로 읽어 고름 전체를 지움.
+고침: ① 마커 · 띠에 맞은 누름은 부재 고름이 건너뜀 ② 숨은 핀 · 꺼 둔 측점선 · 라벨은 누름을 안 가로챔
+③ 3D 빈 곳 누름 = 고름 안 풂(08-05) · 같은 띠 · 같은 부재 다시 누름 = 풂.
+진짜 TS 를 `helper_232_1_3d_press.cjs` 가 three + 가짜 캔버스로 한 누름씩(창 캡처 → 캔버스 듣개 차례) 돌림.
+"""
+
+from __future__ import annotations
+
+import json
+import os
+import subprocess
+
+import pytest
+
+HERE = os.path.dirname(os.path.abspath(__file__))
+ROOT = os.path.abspath(os.path.join(HERE, "..", ".."))
+
+pytestmark = pytest.mark.skipif(
+    not os.path.isdir(os.path.join(ROOT, "config", "node_modules")),
+    reason="프론트엔드 의존성 미설치",
+)
+
+RED = "#ef4444"
+YELLOW = "#facc15"
+AT_120 = {"chainageM": 120, "structureId": None}
+
+
+@pytest.fixture(scope="module")
+def out() -> dict:
+    proc = subprocess.run(  # noqa: S603 — 고정 실행 파일
+        ["node", os.path.join(HERE, "helper_232_1_3d_press.cjs")],
+        capture_output=True,
+        text=True,
+        encoding="utf-8",
+        timeout=60,
+    )
+    assert proc.returncode == 0, proc.stderr
+    return json.loads(proc.stdout)
+
+
+def test_띠_누름은_뗀_뒤에도_빨강_핀_기록_유지(out) -> None:
+    for phase in ("down", "up"):
+        state = out["bar"][phase]
+        assert state["s120"] == RED
+        assert state["pin"] is True
+        assert state["session"] == AT_120
+        assert state["graph"] == "s120"
+
+
+def test_빈_곳_누름은_고름_안_풂(out) -> None:
+    assert out["empty"]["up"]["s120"] == RED
+    assert out["empty"]["up"]["session"] == AT_120
+    assert out["memberEmpty"]["up"]["member"] is True
+    assert out["memberEmpty"]["up"]["session"]["chainageM"] == 160
+
+
+def test_같은_띠_다시_누름은_풂(out) -> None:
+    up = out["again"]["up"]
+    assert (up["s120"], up["pin"], up["session"], up["graph"]) == (YELLOW, False, None, None)
+
+
+def test_숨은_핀_라벨이_있던_띠_가운데도_켜짐(out) -> None:
+    assert out["center"]["up"]["s120"] == RED
+    assert out["center"]["up"]["session"] == AT_120
+
+
+def test_부재_고름과_같은_부재_다시_누름(out) -> None:
+    up = out["memberPick"]["up"]
+    assert up["member"] is True
+    assert up["session"] == {"chainageM": 160, "structureId": None, "partKey": "inlet"}
+    again = out["memberAgain"]["up"]
+    assert again["member"] is False
+    assert again["session"] is None
+
+
+def test_꺼_둔_측점선은_누름을_안_가로챔(out) -> None:
+    up = out["hiddenLines"]["up"]
+    assert up["s100"] == YELLOW
+    assert up["session"] == AT_120  # 앞 고름 그대로 · 빈 곳 누름이라 안 풂
+    assert out["hiddenPressedMarker"] is False
+
+
+def test_배선() -> None:
+    with open(
+        os.path.join(ROOT, "B05_Profile", "B05_Profile_UI_Viewer.ts"), encoding="utf-8"
+    ) as handle:
+        viewer = handle.read()
+    assert "pressedMarker: () => markerInput.pressedMarker()" in viewer