diff --git a/backend/app/api/map_dimensions.py b/backend/app/api/map_dimensions.py
new file mode 100644
index 00000000..bf09b850
--- /dev/null
+++ b/backend/app/api/map_dimensions.py
@@ -0,0 +1,600 @@
+# -*- coding: utf-8 -*-
+"""战略地图 · 维度切片（时间 / 门店 / 产品）—— A3
+
+目的：让战略地图的 KPI 能按维度切片重算，而不是永远只显示总额/最新值。
+
+口径（与既有读路径保持一致，不另造口径）：
+- 实测区：复用 `app.utils.kpi_value_scope.actual_only_clause()`，预估行不得进入切片。
+- 指标方向：优先 `kpi_definitions.direction`；缺失时退回
+  `app.utils.strategy_board.INVERSE_KPI_IDS` 显式白名单（不用 NULL 推断）。
+- 状态类：`unit == '状态'` ⇒ 1 = 达标 / 0 = 未达标，不做除法。
+- 达成率阈值沿用地图现有语义：≥90% success / ≥60% warning / <60% danger。
+
+三维可用性（以库内事实为准，不假装有数据）：
+- 时间：`kpi_values.period`（YYYY / YYYY-Hn / YYYY-MM）真实存在，可切。
+- 产品：`product_sales`（仅 entity 1，2026-01…2026-08，按 `product_name`）真实存在；
+  只对「产品级可取数」的 KPI（PRODUCT_SCOPED_CODES）生效，其余 KPI 显式不可用。
+- 门店：库内**无**门店级事实表（无 store/dept 字段，`voucher_details` 无辅助核算），
+  仅能从 `subjects.subject_name` 反推门店名称 ⇒ 提供候选值但标记不可用；
+  切片结果一律 `available=false`，**绝不回退总额**。
+
+空态契约：所选维度下没有某 KPI 的实测值时，返回 `actual_value=null` +
+`available=false` + `reason`；绝不把总额/其它期间的值填进来。
+"""
+from __future__ import annotations
+
+import json
+import re
+from typing import Any, Optional
+
+from fastapi import APIRouter, Depends, HTTPException, Query
+from sqlalchemy import text
+from sqlalchemy.orm import Session
+
+from app.auth_middleware import require_role
+from app.database import get_db
+from app.deps import get_entity_id
+from app.models import KPIDefinition, KPIValue, MapObjective, ProductSales, StrategicMap
+from app.utils.kpi_value_scope import actual_only_clause
+from app.utils.strategy_board import INVERSE_KPI_IDS, STATUS_UNIT
+
+router = APIRouter(
+    prefix="/api/cma/maps",
+    tags=["战略地图维度切片"],
+    dependencies=[Depends(require_role("ceo", "finance"))],
+)
+
+#: 目前只有营业收入的月度总额来自 product_sales（已对拍：2026-01…07 与 KPI 值逐月相等）
+PRODUCT_SCOPED_CODES = frozenset({"F_REVENUE"})
+
+#: 流量型单位：季度/年度切片按「月份求和」
+FLOW_UNITS = frozenset({"万元", "元", "个", "次", "轮", "件", "人"})
+
+#: 达成率 → 色阶（与地图现有 legend 一致）
+SUCCESS_RATE = 0.9
+WARNING_RATE = 0.6
+
+_MONTH_RE = re.compile(r"^\d{4}-(0[1-9]|1[0-2])$")
+_QUARTER_RE = re.compile(r"^\d{4}-Q[1-4]$")
+_YEAR_RE = re.compile(r"^\d{4}$")
+
+_STORE_SUFFIX_RE = re.compile(r"(吴忠地标店|吴忠隆泰店|新区大店|地标店|一店|二店)")
+_STORE_DISPLAY_ORDER = ["一店", "二店", "吴忠地标店", "新区大店", "吴忠隆泰店"]
+
+#: 存量/余额型指标：区间切片取「最新一期」，禁止按月求和（否则余额被累加）
+BALANCE_HINTS = ("余额", "库存", "去化", "货币资金", "借款", "应收", "应付", "资产", "负债", "占用", "头寸")
+
+#: 产品源与 KPI 实测值的允许偏差（超过即判源未对齐，不参与切片）
+PRODUCT_SOURCE_TOLERANCE = 0.01
+
+
+# ── 小工具 ────────────────────────────────────────────────
+def _obj_kpi_codes(raw: Any) -> list[str]:
+    """map_objectives.kpis 兼容四种存储形态：list[str] / json 字符串 / list[dict] / NULL。"""
+    if raw is None:
+        return []
+    data = raw
+    if isinstance(raw, str):
+        try:
+            data = json.loads(raw)
+        except (TypeError, ValueError):
+            return []
+    if not isinstance(data, list):
+        return []
+    out: list[str] = []
+    for item in data:
+        if isinstance(item, str):
+            out.append(item)
+        elif isinstance(item, dict):
+            code = item.get("kpi_code") or item.get("code")
+            if code:
+                out.append(str(code))
+    return out
+
+
+def _map_or_404(db: Session, map_id: int, entity_id: int) -> StrategicMap:
+    m = db.query(StrategicMap).filter(
+        StrategicMap.id == map_id, StrategicMap.entity_id == entity_id,
+    ).first()
+    if not m:
+        raise HTTPException(404, "战略地图不存在")
+    return m
+
+
+def _map_kpis(db: Session, map_id: int, entity_id: int):
+    """返回 (map_objectives, {kpi_code: KPIDefinition})，KPI 只取本实体（账套隔离）。"""
+    objs = db.query(MapObjective).filter(
+        MapObjective.map_id == map_id, MapObjective.entity_id == entity_id,
+    ).order_by(MapObjective.sort_order, MapObjective.id).all()
+    codes: set[str] = set()
+    for o in objs:
+        codes.update(_obj_kpi_codes(o.kpis))
+    defs: dict[str, KPIDefinition] = {}
+    if codes:
+        for k in db.query(KPIDefinition).filter(
+            KPIDefinition.entity_id == entity_id, KPIDefinition.kpi_code.in_(codes),
+        ).all():
+            defs[k.kpi_code] = k
+    return objs, defs
+
+
+def _parse_period(period: Optional[str]) -> tuple[Optional[str], Optional[str]]:
+    """返回 (粒度, 归一值)：year / quarter / month；非法或空返回 (None, None)。"""
+    if not period:
+        return None, None
+    p = period.strip()
+    if _MONTH_RE.match(p):
+        return "month", p
+    if _QUARTER_RE.match(p):
+        return "quarter", p
+    if _YEAR_RE.match(p):
+        return "year", p
+    return None, None
+
+
+def _months_of(period_type: str, period: str) -> list[str]:
+    if period_type == "month":
+        return [period]
+    year = period[:4]
+    if period_type == "quarter":
+        q = int(period[-1])
+        start = (q - 1) * 3 + 1
+        return [f"{year}-{m:02d}" for m in range(start, start + 3)]
+    return [f"{year}-{m:02d}" for m in range(1, 13)]
+
+
+def _unit_kind(unit: Optional[str], kpi: Optional[KPIDefinition] = None) -> str:
+    u = (unit or "").strip()
+    if u == STATUS_UNIT:
+        return "status"
+    name = (getattr(kpi, "kpi_name", "") or "") + " " + (getattr(kpi, "kpi_code", "") or "")
+    if any(h in name for h in BALANCE_HINTS):
+        return "balance"
+    if u in FLOW_UNITS:
+        return "flow"
+    return "ratio"
+
+
+def _is_lower_better(kpi: KPIDefinition) -> bool:
+    direction = (getattr(kpi, "direction", None) or "").strip().lower()
+    if direction in ("lower_better", "lower", "desc", "down"):
+        return True
+    if direction in ("higher_better", "higher", "asc", "up"):
+        return False
+    return kpi.id in INVERSE_KPI_IDS
+
+
+def _level_from_ratio(ratio: Optional[float]) -> str:
+    if ratio is None:
+        return "gray"
+    if ratio >= SUCCESS_RATE:
+        return "green"
+    if ratio >= WARNING_RATE:
+        return "yellow"
+    return "red"
+
+
+def _base_target(kpi: KPIDefinition) -> Optional[float]:
+    for attr in ("target_monthly", "target_value"):
+        v = getattr(kpi, attr, None)
+        if v is not None:
+            try:
+                return float(v)
+            except (TypeError, ValueError):
+                continue
+    return None
+
+
+def _scaled_target(kpi: KPIDefinition, period_type: str, year_period: Optional[str], db: Session, entity_id: int) -> tuple[Optional[float], str]:
+    """目标值：年切片优先取 kpi_targets 的年度行；否则按单位缩放月度目标。
+
+    返回 (target, target_basis)。
+    """
+    if year_period:
+        row = db.execute(text(
+            "SELECT target_value FROM kpi_targets WHERE entity_id=:e AND kpi_id=:k "
+            "AND period=:p AND target_type IN ('yearly','annual') ORDER BY target_type='yearly' DESC LIMIT 1"
+        ), {"e": entity_id, "k": kpi.id, "p": year_period}).fetchone()
+        if row and row[0] is not None:
+            return float(row[0]), f"kpi_targets.{year_period}.yearly"
+
+    base = _base_target(kpi)
+    if base is None:
+        return None, "no_target"
+    kind = _unit_kind(kpi.unit, kpi)
+    if kind == "status":
+        return None, "status_no_target"
+    if kind == "balance":
+        return base, "target_balance"
+    if period_type == "month":
+        return base, "target_monthly"
+    if period_type == "quarter":
+        return (base * 3 if kind == "flow" else base), "target_monthly×3"
+    return (base * 12 if kind == "flow" else base), "target_monthly×12"
+
+
+def _aggregate(rows: list[KPIValue], unit: Optional[str], kpi: Optional[KPIDefinition] = None) -> tuple[Optional[float], str, list[str], bool]:
+    """把区间内的实测行聚合成一个切片值。
+
+    返回 (value, aggregation, months_used, partial)。
+    - 状态类 / 存量余额类：取最新一期（不求和）
+    - 流量型：求和
+    - 比率/天数：均值
+    """
+    if not rows:
+        return None, "none", [], True
+    ordered = sorted(rows, key=lambda v: (str(v.period), v.id))
+    months = [str(v.period) for v in ordered]
+    kind = _unit_kind(unit, kpi)
+    if kind in ("status", "balance"):
+        last = ordered[-1]
+        return (float(last.actual_value) if last.actual_value is not None else None), "latest", [str(last.period)], False
+    vals = [float(v.actual_value) for v in ordered if v.actual_value is not None]
+    if not vals:
+        return None, "none", months, True
+    if kind == "flow":
+        return round(sum(vals), 4), "sum_of_months", months, False
+    return round(sum(vals) / len(vals), 4), "mean_of_months", months, False
+
+
+# ── 维度候选值 ────────────────────────────────────────────
+def _time_options(db: Session, kpi_ids: list[int], entity_id: int) -> dict:
+    if not kpi_ids:
+        return {"available": False, "reason": "该地图未绑定 KPI", "years": [], "quarters": [], "months": []}
+    rows = db.query(KPIValue.period).filter(
+        KPIValue.entity_id == entity_id,
+        KPIValue.kpi_id.in_(kpi_ids),
+        actual_only_clause(),
+    ).distinct().all()
+    periods = [str(r[0]) for r in rows if r[0]]
+    months = sorted(p for p in periods if _MONTH_RE.match(p))
+    quarters = sorted(p for p in periods if _QUARTER_RE.match(p))
+    years = sorted({p[:4] for p in periods})
+    if months:
+        for y in sorted({m[:4] for m in months}):
+            for q in range(1, 5):
+                qq = f"{y}-Q{q}"
+                if qq not in quarters and any(m in _months_of("quarter", qq) for m in months):
+                    quarters.append(qq)
+        quarters.sort()
+    return {
+        "available": bool(periods),
+        "reason": None if periods else "该地图 KPI 无实测值（kpi_values 为空）",
+        "years": years,
+        "quarters": quarters,
+        "months": months,
+        "granularity": ["year", "quarter", "month"],
+    }
+
+
+def _store_options(db: Session, entity_id: int) -> dict:
+    rows = db.execute(text(
+        "SELECT DISTINCT subject_code, subject_name FROM subjects WHERE entity_id=:e AND subject_name LIKE '%店%'"
+    ), {"e": entity_id}).fetchall()
+    found: set[str] = set()
+    for _code, name in rows:
+        for hit in _STORE_SUFFIX_RE.findall(str(name or "")):
+            found.add("吴忠地标店" if hit == "地标店" else hit)
+    values = [{"code": f"BR-{i+1:02d}", "name": n} for i, n in enumerate(
+        [n for n in _STORE_DISPLAY_ORDER if n in found] or sorted(found)
+    )]
+    return {
+        "available": False,
+        "reason": "该维度暂无数据：库内无门店级事实表（无 store/dept 字段，凭证无辅助核算），"
+                  "门店名称仅能从费用类科目名称反推，无法按门店切 KPI；不回退总额",
+        "values": values,
+        "source": "subjects.subject_name 反推（仅费用类科目）",
+        "coverage": "expense_subjects_only",
+    }
+
+
+def _product_options(db: Session, entity_id: int) -> dict:
+    rows = db.query(ProductSales.product_name).filter(
+        ProductSales.entity_id == entity_id,
+    ).distinct().all()
+    names = sorted({str(r[0]) for r in rows if r[0]})
+    if not names:
+        return {"available": False, "reason": "该实体无产品级销售数据（product_sales 为空）", "values": [], "kpi_scope": sorted(PRODUCT_SCOPED_CODES)}
+    span = db.query(ProductSales.period_month).filter(
+        ProductSales.entity_id == entity_id,
+    ).distinct().all()
+    months = sorted({str(r[0]) for r in span if r[0]})
+    return {
+        "available": True,
+        "reason": None,
+        "values": [{"code": n, "name": n} for n in names],
+        "kpi_scope": sorted(PRODUCT_SCOPED_CODES),
+        "period_coverage": {"min": months[0] if months else None, "max": months[-1] if months else None, "months": months},
+        "source": "product_sales.product_name（按 period_month 聚合，元→万元）",
+    }
+
+
+# ── 切片计算 ──────────────────────────────────────────────
+def _slice_kpi_month(db: Session, kpi: KPIDefinition, entity_id: int, period: str) -> tuple[Optional[float], Optional[str]]:
+    rows = db.query(KPIValue).filter(
+        KPIValue.entity_id == entity_id,
+        KPIValue.kpi_id == kpi.id,
+        KPIValue.period == period,
+        actual_only_clause(),
+    ).order_by(KPIValue.id.desc()).all()
+    if not rows:
+        return None, f"{period} 无实测值"
+    # 同期多行：优先 verified/calculated（strategy_board 的同口径排序）
+    rank = {"verified": 3, "calculated": 2, "pending": 1}
+    best = sorted(rows, key=lambda v: rank.get((v.data_status or "").lower(), 0), reverse=True)[0]
+    return (float(best.actual_value) if best.actual_value is not None else None), None
+
+
+def _slice_kpi_period(db: Session, kpi: KPIDefinition, entity_id: int, ptype: str, period: str) -> tuple[Optional[float], str, list[str], Optional[str]]:
+    """时间切片：月=精确值；季/年=区间聚合（年优先取 YYYY 行）。"""
+    if ptype == "month":
+        val, err = _slice_kpi_month(db, kpi, entity_id, period)
+        return val, "exact", [period], err
+
+    if ptype == "year":
+        val, err = _slice_kpi_month(db, kpi, entity_id, period)
+        if val is not None:
+            return val, "exact", [period], None
+
+    months = _months_of(ptype, period)
+    rows = db.query(KPIValue).filter(
+        KPIValue.entity_id == entity_id,
+        KPIValue.kpi_id == kpi.id,
+        KPIValue.period.in_(months),
+        actual_only_clause(),
+    ).all()
+    val, agg, used, _ = _aggregate(rows, kpi.unit, kpi)
+    expected = 3 if ptype == "quarter" else 12
+    if val is None:
+        return None, "none", [], f"{period} 无实测值（区间内无月度数据）"
+    partial = len(used) < expected and agg != "latest"
+    note = f"{period} 仅 {len(used)}/{expected} 个月有实测值" if partial else None
+    return val, agg, used, note
+
+
+def _slice_kpi_product(db: Session, kpi: KPIDefinition, entity_id: int, product: str, ptype: str, period: str) -> tuple[Optional[float], str, list[str], Optional[str]]:
+    """产品切片：仅对 PRODUCT_SCOPED_CODES 生效，并按「逐月源一致性」闸门。
+
+    `product_sales` 月合计与 KPI 同月实测值必须吻合（±1%）才纳入；不吻合的月份
+    视为源未对齐（例如 2026-08 产品表 8.08 万 vs KPI 14.45 万），
+    不做缩放、不并入，避免用产品表冒充 KPI 总额。
+    """
+    if kpi.kpi_code not in PRODUCT_SCOPED_CODES:
+        return None, "unsupported", [], "该 KPI 无产品级取数（维度未落库），不回退总额"
+    months = _months_of(ptype, period)
+
+    # 逐月源一致性：product_sales 全量合计（元） vs KPI 实测值（万元）
+    totals = db.query(ProductSales.period_month, ProductSales.sales_amount).filter(
+        ProductSales.entity_id == entity_id, ProductSales.period_month.in_(months),
+    ).all()
+    by_month: dict[str, float] = {}
+    for pm, amt in totals:
+        by_month[str(pm)] = by_month.get(str(pm), 0.0) + float(amt or 0)
+
+    kpi_month: dict[str, float] = {}
+    for m in months:
+        v, _err = _slice_kpi_month(db, kpi, entity_id, m)
+        if v is not None:
+            kpi_month[m] = float(v) * 10000.0  # 万元 → 元
+
+    covered = []
+    misaligned = []
+    for m in months:
+        if m not in by_month or m not in kpi_month:
+            continue
+        base = kpi_month[m]
+        if base == 0:
+            continue
+        if abs(by_month[m] - base) / abs(base) <= PRODUCT_SOURCE_TOLERANCE:
+            covered.append(m)
+        else:
+            misaligned.append(m)
+
+    if not covered:
+        detail = ""
+        if misaligned:
+            detail = "（源未对齐月份：" + "、".join(misaligned) + "）"
+        return None, "uncovered", [], f"产品表与 KPI 实测值不一致{detail}，该期间不做产品切片、不回退总额"
+
+    rows = db.query(ProductSales).filter(
+        ProductSales.entity_id == entity_id,
+        ProductSales.product_name == product,
+        ProductSales.period_month.in_(covered),
+    ).all()
+    if not rows:
+        return None, "none", [], f"产品「{product}」在 {'、'.join(covered)} 无销售数据"
+
+    used = sorted({r.period_month for r in rows})
+    total = sum(float(r.sales_amount or 0) for r in rows) / 10000.0  # 元 → 万元
+    note = None
+    if len(covered) < len(months):
+        note = f"仅 {'、'.join(covered)} 通过源一致性校验" + (f"；未对齐：{'、'.join(misaligned)}" if misaligned else "")
+    return round(total, 4), "sum_of_product_sales", used, note
+
+
+def build_slice(db: Session, entity_id: int, map_id: int, period: Optional[str], store: Optional[str], product: Optional[str]) -> dict:
+    _map_or_404(db, map_id, entity_id)
+    objs, defs = _map_kpis(db, map_id, entity_id)
+    ptype, pnorm = _parse_period(period)
+    if period and not ptype:
+        raise HTTPException(400, "period 格式应为 YYYY / YYYY-Qn / YYYY-MM")
+    if not pnorm:
+        # 未选时间：取该地图 KPI 的最新实测期（沿用现有「最新值」语义，并显式标注）
+        latest = None
+        ids = [k.id for k in defs.values()]
+        if ids:
+            rows = db.query(KPIValue.period).filter(
+                KPIValue.entity_id == entity_id, KPIValue.kpi_id.in_(ids), actual_only_clause(),
+            ).all()
+            cand = [str(r[0]) for r in rows if r[0]]
+            months = sorted(p for p in cand if _MONTH_RE.match(p))
+            pnorm = months[-1] if months else (sorted(cand)[-1] if cand else None)
+            if pnorm:
+                ptype = "month" if _MONTH_RE.match(pnorm) else ("quarter" if _QUARTER_RE.match(pnorm) else "year")
+        if latest is None and not pnorm:
+            latest = None
+    ptype = ptype or "month"
+    pnorm = pnorm or ""
+
+    dims_meta = {
+        "time": {"available": bool(pnorm), "period": pnorm, "type": ptype,
+                 "reason": None if pnorm else "该地图 KPI 无实测值"},
+        "store": _store_options(db, entity_id) if store else {"available": True, "selected": None},
+        "product": _product_options(db, entity_id) if product else {"available": True, "selected": None},
+    }
+    if store:
+        dims_meta["store"]["selected"] = store
+    if product:
+        dims_meta["product"]["selected"] = product
+
+    objectives: list[dict] = []
+    any_available = False
+    empty_reasons: list[str] = []
+
+    for obj in objs:
+        codes = [c for c in _obj_kpi_codes(obj.kpis) if c in defs]
+        kpi_rows: list[dict] = []
+        worst = "green"
+        for code in codes:
+            kpi = defs[code]
+            target = None
+            basis = "no_period"
+            actual = None
+            agg = "none"
+            used: list[str] = []
+            reason: Optional[str] = None
+
+            if store:
+                reason = "该维度暂无数据：无门店级 KPI 事实表，不回退总额"
+            elif not pnorm:
+                reason = "无可用实测期间"
+            elif product:
+                actual, agg, used, reason = _slice_kpi_product(db, kpi, entity_id, product, ptype, pnorm)
+                target, basis = _scaled_target(kpi, ptype, pnorm[:4] if ptype == "year" else None, db, entity_id)
+                # 产品切片只覆盖通过源一致性校验的月份 ⇒ 流量型目标按覆盖月数缩放
+                if actual is not None and _unit_kind(kpi.unit, kpi) == "flow" and used:
+                    base = _base_target(kpi)
+                    if base is not None:
+                        target = round(base * len(used), 4)
+                        basis = f"target_monthly×{len(used)}(覆盖月数)"
+            else:
+                actual, agg, used, note = _slice_kpi_period(db, kpi, entity_id, ptype, pnorm)
+                target, basis = _scaled_target(kpi, ptype, pnorm[:4] if ptype == "year" else None, db, entity_id)
+                reason = note
+
+            available = actual is not None
+            act = float(actual) if actual is not None else None
+            tgt = float(target) if target is not None else None
+            ratio = None
+            level = "gray"
+            if act is not None and _unit_kind(kpi.unit) == "status":
+                ratio = 1.0 if act >= 1 else 0.0
+                level = "green" if ratio == 1.0 else "red"
+            elif act is not None and tgt:
+                if _is_lower_better(kpi):
+                    ratio = (tgt / act) if act > 0 else None
+                else:
+                    ratio = act / tgt if tgt != 0 else None
+                level = _level_from_ratio(ratio)
+            if reason and available and agg != "exact":
+                # 部分月份可用：值可用但必须带口径说明
+                pass
+
+            if level == "red":
+                worst = "red"
+            elif level == "yellow" and worst != "red":
+                worst = "yellow"
+            elif level == "gray" and worst == "green" and not available:
+                worst = "gray"
+
+            if not available:
+                empty_reasons.append(reason or f"{code} 无数据")
+            any_available = any_available or available
+
+            kpi_rows.append({
+                "kpi_id": kpi.id,
+                "kpi_code": code,
+                "kpi_name": kpi.kpi_name,
+                "unit": kpi.unit,
+                "actual_value": actual,
+                "target_value": target,
+                "target_basis": basis,
+                "achievement_pct": (round(ratio * 100, 1) if ratio is not None else None),
+                "level": level,
+                "available": available,
+                "reason": reason,
+                "aggregation": agg,
+                "periods_used": used,
+            })
+
+        objectives.append({
+            "objective_id": obj.id,
+            "dimension_key": obj.dimension_key,
+            "name": obj.name,
+            "kpis": kpi_rows,
+            "level": worst if kpi_rows else "gray",
+            "has_data": any(k["available"] for k in kpi_rows),
+        })
+
+    empty = not any_available
+    empty_reason = None
+    if empty:
+        if store:
+            empty_reason = "该维度暂无数据：库内无门店级 KPI 事实表（G4 未落地），不回退总额"
+        elif product:
+            specific = next((r for r in empty_reasons if "产品" in r), None)
+            empty_reason = specific or "该维度暂无数据：所选产品未覆盖该地图 KPI，不回退总额"
+        elif not pnorm:
+            empty_reason = "该地图 KPI 无实测值"
+        else:
+            empty_reason = empty_reasons[0] if empty_reasons else "所选切片无实测值"
+
+    return {
+        "map_id": map_id,
+        "entity_id": entity_id,
+        "slice": {"period": pnorm, "period_type": ptype, "store": store, "product": product},
+        "empty": empty,
+        "empty_reason": empty_reason,
+        "dims": dims_meta,
+        "objectives": objectives,
+        "caliber": {
+            "actual_scope": "实测区（预估行排除）",
+            "achievement_thresholds": {"success": SUCCESS_RATE, "warning": WARNING_RATE},
+            "aggregation": {"flow": "sum_of_months", "ratio": "mean_of_months", "status": "latest"},
+            "no_fallback": "维度无数据时返回 null，不用总额/其它期间冒充",
+        },
+    }
+
+
+# ── 路由 ──────────────────────────────────────────────────
+@router.get("/{map_id}/dimension-options")
+def get_dimension_options(
+    map_id: int,
+    db: Session = Depends(get_db),
+    entity_id: int = Depends(get_entity_id),
+):
+    """战略地图三维候选值（时间真实可切；门店/产品按库内事实显式标注可用性）。"""
+    _map_or_404(db, map_id, entity_id)
+    _objs, defs = _map_kpis(db, map_id, entity_id)
+    ids = [k.id for k in defs.values()]
+    return {
+        "map_id": map_id,
+        "entity_id": entity_id,
+        "time": _time_options(db, ids, entity_id),
+        "store": _store_options(db, entity_id),
+        "product": _product_options(db, entity_id),
+        "kpi_count": len(defs),
+    }
+
+
+@router.get("/{map_id}/slice")
+def get_map_slice(
+    map_id: int,
+    period: Optional[str] = Query(None, description="YYYY / YYYY-Qn / YYYY-MM；空=最新实测期"),
+    store: Optional[str] = Query(None, description="门店名称；库内无门店级事实时显式空态"),
+    product: Optional[str] = Query(None, description="产品名称（product_sales）"),
+    db: Session = Depends(get_db),
+    entity_id: int = Depends(get_entity_id),
+):
+    """按 时间/门店/产品 切片重算地图 KPI（只读；无数据 ⇒ null + 原因，绝不回退总额）。"""
+    return build_slice(db, entity_id, map_id, period, store, product)
diff --git a/backend/app/main.py b/backend/app/main.py
index 53b24c0d..3260704e 100644
--- a/backend/app/main.py
+++ b/backend/app/main.py
@@ -7,7 +7,7 @@ from fastapi.responses import JSONResponse
 from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
 from dotenv import load_dotenv
 from app.database import init_db, get_db
-from app.api import auth, kpis, kpi_governance, templates, maps, dashboard, data, alerts, ai_analysis, ai_suggestions, alert_rules, users, thresholds, notifications, permissions, action_plans, alignment, org, objectives, versions, budget, cost, predict, reports, security, knowledge, bot_bridge, bot_bridge_v2, bot_suggestions, lead, tenant, customer_dashboard, deviation_push, budget_generate, knowledge_articles, kpi_causality, data_quality, bi_reports, entities, bsc_layers, okr, okr_templates, subjects, driver_budget, bot_kpis, ontology, bot_iron_law, analysis_results, expenses, cash, tax_compliance, verify, growth_quality, products, data_classification, value_sources, zero_based, derivation_rules, cash_classify, cashflow_structure, cash_vouchers_json, ext_input_ledgers, treasury, doc_center
+from app.api import auth, kpis, kpi_governance, templates, maps, dashboard, data, alerts, ai_analysis, ai_suggestions, alert_rules, users, thresholds, notifications, permissions, action_plans, alignment, org, objectives, versions, budget, cost, predict, reports, security, knowledge, bot_bridge, bot_bridge_v2, bot_suggestions, lead, tenant, customer_dashboard, deviation_push, budget_generate, knowledge_articles, kpi_causality, data_quality, bi_reports, entities, bsc_layers, okr, okr_templates, subjects, driver_budget, bot_kpis, ontology, bot_iron_law, analysis_results, expenses, cash, tax_compliance, verify, growth_quality, products, data_classification, value_sources, zero_based, derivation_rules, cash_classify, cashflow_structure, cash_vouchers_json, ext_input_ledgers, treasury, doc_center, map_dimensions
 from app.utils.cache import clear_all as clear_cache, delete as delete_cache
 from scripts.erp_sync import run_sync as run_erp_sync
 from app.auth_middleware import require_auth, require_auth_401
@@ -67,6 +67,7 @@ app.include_router(cashflow_structure.compat_router)
 app.include_router(cost.router)
 app.include_router(predict.router)
 app.include_router(growth_quality.router)
+app.include_router(map_dimensions.router)
 app.include_router(products.router)
 app.include_router(reports.router)
 app.include_router(security.router)
diff --git a/backend/scripts/_a3_product.py b/backend/scripts/_a3_product.py
new file mode 100644
index 00000000..04303fb8
--- /dev/null
+++ b/backend/scripts/_a3_product.py
@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+"""A3 产品切片正例：2026-07（源一致性通过）逐产品核对。"""
+import os, sys
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+for line in open('/root/cma-management/backend/.env'):
+    line = line.strip()
+    if '=' in line and not line.startswith('#') and line.split('=')[0].startswith('CMA_DB'):
+        k, v = line.split('=', 1); os.environ.setdefault(k, v)
+from app.database import get_session_local
+from app.api.map_dimensions import build_slice
+db = get_session_local()()
+
+for prod in ("酣客酱酒", "禧酱", "标准版"):
+    r = build_slice(db, 1, 65, "2026-07", None, prod)
+    rev = [k for o in r["objectives"] for k in o["kpis"] if k["kpi_code"] == "F_REVENUE"][0]
+    print(prod, "| empty:", r["empty"], "|", r["empty_reason"], "| rev:", rev["actual_value"], "/", rev["target_value"], rev["achievement_pct"], rev["aggregation"], rev["periods_used"], "| note:", rev["reason"])
+
+r = build_slice(db, 1, 65, "2026-Q3", None, "酣客酱酒")
+rev = [k for o in r["objectives"] for k in o["kpis"] if k["kpi_code"] == "F_REVENUE"][0]
+print("Q3 酣客酱酒 | empty:", r["empty"], "| rev:", rev["actual_value"], "/", rev["target_value"], rev["achievement_pct"], rev["aggregation"], rev["periods_used"], "| note:", rev["reason"])
+
+r = build_slice(db, 1, 65, None, None, None)
+print("默认(最新期):", r["slice"], [ (k["kpi_code"],k["actual_value"]) for o in r["objectives"] for k in o["kpis"] if k["available"]][:6])
+print("store 空态:", build_slice(db, 1, 65, "2026-07", "一店", None)["empty_reason"])
+db.close()
diff --git a/backend/scripts/_a3_selftest.py b/backend/scripts/_a3_selftest.py
new file mode 100644
index 00000000..3f79178c
--- /dev/null
+++ b/backend/scripts/_a3_selftest.py
@@ -0,0 +1,46 @@
+# -*- coding: utf-8 -*-
+"""A3 自测：直接调 build_slice（不启服务），校验真实库切片与空态。"""
+import os, sys, json
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+for line in open('/root/cma-management/backend/.env'):
+    line = line.strip()
+    if '=' in line and not line.startswith('#') and line.split('=')[0].startswith(('CMA_DB', 'ERP_DB')):
+        k, v = line.split('=', 1); os.environ.setdefault(k, v)
+
+from app.database import get_session_local
+from app.api.map_dimensions import build_slice, _time_options, _store_options, _product_options
+
+db = get_session_local()()
+
+def brief(r):
+    print("slice:", r["slice"], "| empty:", r["empty"], "|", r["empty_reason"])
+    for o in r["objectives"]:
+        ks = [f'{k["kpi_code"]}={k["actual_value"]}/{k["target_value"]}@{k["achievement_pct"]}%({k["level"]},{k["aggregation"]}){"" if k["available"] else "[空:"+str(k["reason"])[:36]+"]"}' for k in o["kpis"]]
+        if ks:
+            print("  ", o["dimension_key"], o["name"], "|", "; ".join(ks))
+
+print("=== 1) 2026-08 月切片 (map 65)")
+brief(build_slice(db, 1, 65, "2026-08", None, None))
+print("\n=== 2) 2026-Q3 季切片")
+brief(build_slice(db, 1, 65, "2026-Q3", None, None))
+print("\n=== 3) 2026 年切片")
+brief(build_slice(db, 1, 65, "2026", None, None))
+print("\n=== 4) 产品切片 酣客酱酒 @2026-08")
+brief(build_slice(db, 1, 65, "2026-08", None, "酣客酱酒"))
+print("\n=== 5) 产品切片 不存在产品 @2026-08")
+brief(build_slice(db, 1, 65, "2026-08", None, "不存在的产品X"))
+print("\n=== 6) 门店切片 一店 @2026-08")
+brief(build_slice(db, 1, 65, "2026-08", "一店", None))
+print("\n=== 7) entity 隔离: map65 + entity2")
+try:
+    build_slice(db, 2, 65, "2026-08", None, None)
+    print("FAIL 未拦截")
+except Exception as e:
+    print("OK 拦截:", type(e).__name__, getattr(e, "status_code", ""), getattr(e, "detail", e))
+
+print("\n=== 8) options map65")
+o = build_slice(db, 1, 65, None, None, None)
+print("time dims:", json.dumps(o["dims"]["time"], ensure_ascii=False)[:300])
+print("store:", json.dumps(o["dims"]["store"], ensure_ascii=False)[:300])
+print("product:", json.dumps(o["dims"]["product"], ensure_ascii=False)[:300])
+db.close()
diff --git a/frontend/src/components/map-canvas/MapDimensionFilter.vue b/frontend/src/components/map-canvas/MapDimensionFilter.vue
new file mode 100644
index 00000000..40b67a47
--- /dev/null
+++ b/frontend/src/components/map-canvas/MapDimensionFilter.vue
@@ -0,0 +1,242 @@
+<template>
+  <div class="dim-filter" v-if="mapId">
+    <div class="df-group">
+      <span class="df-label">时间</span>
+      <el-radio-group v-model="granularity" size="small" :disabled="!timeReady" @change="onGranularityChange">
+        <el-radio-button value="month">月</el-radio-button>
+        <el-radio-button value="quarter">季</el-radio-button>
+        <el-radio-button value="year">年</el-radio-button>
+      </el-radio-group>
+      <el-select
+        v-model="period"
+        size="small"
+        placeholder="选择期间"
+        style="width: 132px"
+        :loading="loadingOptions"
+        :disabled="!timeReady"
+        @change="apply"
+      >
+        <el-option v-for="p in periodOptions" :key="p" :label="p" :value="p" />
+      </el-select>
+    </div>
+
+    <div class="df-group">
+      <span class="df-label">门店</span>
+      <el-select
+        v-model="store"
+        size="small"
+        placeholder="全部门店"
+        style="width: 148px"
+        clearable
+        :loading="loadingOptions"
+        @change="apply"
+      >
+        <el-option v-for="s in storeValues" :key="s.name" :label="s.name" :value="s.name" />
+      </el-select>
+      <el-tooltip v-if="!storeAvailable && storeReason" :content="storeReason" placement="top">
+        <span class="df-badge df-badge-warn">无门店级取数</span>
+      </el-tooltip>
+    </div>
+
+    <div class="df-group">
+      <span class="df-label">产品</span>
+      <el-select
+        v-model="product"
+        size="small"
+        placeholder="全部产品"
+        style="width: 148px"
+        clearable
+        filterable
+        :loading="loadingOptions"
+        :disabled="!productAvailable"
+        @change="apply"
+      >
+        <el-option v-for="p in productValues" :key="p.name" :label="p.name" :value="p.name" />
+      </el-select>
+      <span v-if="productAvailable" class="df-badge" :title="productScopeText">仅 {{ productScopeText }}</span>
+      <el-tooltip v-else-if="productReason" :content="productReason" placement="top">
+        <span class="df-badge df-badge-warn">无产品级取数</span>
+      </el-tooltip>
+    </div>
+
+    <div class="df-actions">
+      <span v-if="slice" class="df-active">
+        已切片：{{ sliceLabel }}
+      </span>
+      <el-button size="small" :disabled="!slice" @click="clear">清除切片</el-button>
+    </div>
+
+    <div v-if="slice && slice.empty" class="df-empty" role="status">
+      <span class="df-empty-title">该维度暂无数据</span>
+      <span class="df-empty-desc">{{ slice.empty_reason }}</span>
+      <span class="df-empty-note">地图不回退总额，相关目标按「无数据」显示</span>
+    </div>
+    <div v-else-if="slice" class="df-summary" role="status">
+      {{ summaryText }}
+    </div>
+    <div v-else class="df-hint">
+      选择时间/门店/产品后，地图 KPI 达成率按所选切片重算（数据源：kpi_values / product_sales）
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { computed, ref, watch } from 'vue'
+import api from '../../api/index'
+
+const props = defineProps<{ mapId: number | null }>()
+const emit = defineEmits<{ (e: 'slice', payload: any | null): void }>()
+
+const loadingOptions = ref(false)
+const granularity = ref<'month' | 'quarter' | 'year'>('month')
+const period = ref<string>('')
+const store = ref<string>('')
+const product = ref<string>('')
+
+const options = ref<any>(null)
+const slice = ref<any>(null)
+const sliceSeq = ref(0)
+
+const timeReady = computed(() => !!options.value?.time?.available)
+const storeAvailable = computed(() => !!options.value?.store?.available)
+const storeReason = computed(() => options.value?.store?.reason || '')
+const storeValues = computed<any[]>(() => options.value?.store?.values || [])
+const productAvailable = computed(() => !!options.value?.product?.available)
+const productReason = computed(() => options.value?.product?.reason || '')
+const productValues = computed<any[]>(() => options.value?.product?.values || [])
+const productScopeText = computed(() => (options.value?.product?.kpi_scope || []).join(' / ') || '部分 KPI')
+
+const periodOptions = computed<string[]>(() => {
+  const t = options.value?.time
+  if (!t) return []
+  if (granularity.value === 'year') return t.years || []
+  if (granularity.value === 'quarter') return t.quarters || []
+  return t.months || []
+})
+
+const sliceLabel = computed(() => {
+  const s = slice.value?.slice || {}
+  const parts: string[] = []
+  if (s.period) parts.push(s.period)
+  if (s.store) parts.push(`门店：${s.store}`)
+  if (s.product) parts.push(`产品：${s.product}`)
+  return parts.join(' · ') || '—'
+})
+
+const summaryText = computed(() => {
+  const objs = slice.value?.objectives || []
+  const kpis = objs.flatMap((o: any) => o.kpis || []).filter((k: any) => k.available)
+  const missing = objs.flatMap((o: any) => o.kpis || []).length - kpis.length
+  const partial = kpis.filter((k: any) => k.reason && k.aggregation !== 'exact')
+  const bits = [`切片内 ${kpis.length} 支 KPI 有实测值`]
+  if (missing > 0) bits.push(`${missing} 支无数据（已显式标注，不填总额）`)
+  if (partial.length) bits.push(`${partial.length} 支为区间聚合/部分月份`)
+  return bits.join(' · ')
+})
+
+function pickDefaultPeriod() {
+  const t = options.value?.time
+  if (!t) return ''
+  if (granularity.value === 'year') return (t.years || []).slice(-1)[0] || ''
+  if (granularity.value === 'quarter') return (t.quarters || []).slice(-1)[0] || ''
+  return (t.months || []).slice(-1)[0] || ''
+}
+
+async function loadOptions() {
+  slice.value = null
+  emit('slice', null)
+  period.value = ''
+  store.value = ''
+  product.value = ''
+  options.value = null
+  if (!props.mapId) return
+  loadingOptions.value = true
+  try {
+    const r: any = await api.get(`/maps/${props.mapId}/dimension-options`)
+    options.value = r
+    granularity.value = (r?.time?.months?.length ? 'month' : (r?.time?.quarters?.length ? 'quarter' : 'year'))
+    period.value = pickDefaultPeriod()
+  } catch {
+    options.value = null
+  } finally {
+    loadingOptions.value = false
+  }
+}
+
+function onGranularityChange() {
+  period.value = pickDefaultPeriod()
+  apply()
+}
+
+async function apply() {
+  if (!props.mapId || !period.value) return
+  const seq = ++sliceSeq.value
+  loadingOptions.value = true
+  try {
+    const params: any = { period: period.value }
+    if (store.value) params.store = store.value
+    if (product.value) params.product = product.value
+    const r: any = await api.get(`/maps/${props.mapId}/slice`, { params })
+    if (seq !== sliceSeq.value) return // 只认最后一次选择，避免乱序回包
+    slice.value = r
+    emit('slice', r)
+  } catch (e: any) {
+    if (seq !== sliceSeq.value) return
+    slice.value = { empty: true, empty_reason: e?.message || '切片请求失败', objectives: [] }
+    emit('slice', slice.value)
+  } finally {
+    if (seq === sliceSeq.value) loadingOptions.value = false
+  }
+}
+
+function clear() {
+  sliceSeq.value++
+  slice.value = null
+  store.value = ''
+  product.value = ''
+  period.value = pickDefaultPeriod()
+  emit('slice', null)
+}
+
+watch(() => props.mapId, loadOptions, { immediate: true })
+</script>
+
+<style scoped>
+.dim-filter {
+  display: flex;
+  align-items: center;
+  flex-wrap: wrap;
+  gap: 10px 18px;
+  padding: 8px 16px;
+  margin: 0 0 6px;
+  background: var(--bh-bg-card, #fff);
+  border: 1px solid var(--bh-border, #E5E7EB);
+  border-radius: 8px;
+  flex-shrink: 0;
+  position: relative;
+}
+.df-group { display: inline-flex; align-items: center; gap: 8px; }
+.df-label { font-size: 12px; color: var(--bh-text-secondary, #6B7280); white-space: nowrap; }
+.df-actions { margin-left: auto; display: inline-flex; align-items: center; gap: 10px; }
+.df-active { font-size: 12px; color: var(--bh-text-secondary, #6B7280); font-variant-numeric: tabular-nums; }
+.df-badge {
+  font-size: 11px; padding: 1px 6px; border-radius: 4px;
+  color: var(--bh-text-secondary, #6B7280);
+  background: var(--bh-bg-muted, #F3F4F6);
+  border: 1px solid var(--bh-border, #E5E7EB);
+  white-space: nowrap;
+}
+.df-badge-warn { color: #B45309; background: #FFFBEB; border-color: #FDE68A; }
+.df-hint { font-size: 12px; color: var(--bh-text-secondary, #9CA3AF); }
+.df-summary { font-size: 12px; color: var(--bh-text-secondary, #6B7280); }
+.df-empty {
+  flex-basis: 100%;
+  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
+  padding: 6px 10px; border-radius: 6px;
+  background: #FFFBEB; border: 1px solid #FDE68A;
+  font-size: 12px; color: #92400E;
+}
+.df-empty-title { font-weight: 600; }
+.df-empty-desc { color: #92400E; }
+.df-empty-note { color: #B45309; opacity: .85; }
+</style>
diff --git a/frontend/src/views/MapCanvas.vue b/frontend/src/views/MapCanvas.vue
index 05f51a42..06b16a27 100644
--- a/frontend/src/views/MapCanvas.vue
+++ b/frontend/src/views/MapCanvas.vue
@@ -25,6 +25,9 @@
       @toggle-chain-mode="toggleChainMode"
     />
 
+    <!-- A3 三维切片（时间/门店/产品）：切换即重算；空态显式，不回退总额 -->
+    <MapDimensionFilter :map-id="selectedMap" @slice="onDimensionSlice" />
+
     <!-- 因果链查看模式提示 -->
     <div v-if="chainMode" class="chain-mode-bar">
       <span>🔍 因果链查看模式 — 点击节点聚焦其相关因果链（再次点击取消），其余节点自动变淡</span>
@@ -202,6 +205,7 @@ import { sanitizeKrName } from "../utils/krName"
 import StrategyLayer from "../components/strategy-map/StrategyLayer.vue"
 import ConnectionLines from "../components/strategy/ConnectionLines.vue"
 import MapCanvasToolbar from "../components/map-canvas/MapCanvasToolbar.vue"
+import MapDimensionFilter from "../components/map-canvas/MapDimensionFilter.vue"
 import MapCanvasDialogs from "../components/map-canvas/MapCanvasDialogs.vue"
 import ConnectionManagerDialog from "../components/map-canvas/ConnectionManagerDialog.vue"
 import MyDialog from "../components/MyDialog.vue"
@@ -329,6 +333,44 @@ interface KpiProgressItem {
 }
 const kpiProgressMap = reactive<Record<string, KpiProgressItem>>({})
 
+// ── A3 维度切片（时间/门店/产品）──────────────────────────────
+// 切片激活时用它覆盖 objectiveLevels / kpiProgressMap 的展示值：
+// - available=false 的 KPI 一律 null，不用总额或其它期间冒充
+const dimSlice = ref<any | null>(null)
+
+/** 切片结果 → 节点键（dimKey-index）；按 目标名 对齐 map_objectives 与本地 dimensions */
+const sliceByKey = computed<Record<string, any>>(() => {
+  const out: Record<string, any> = {}
+  const payload = dimSlice.value
+  if (!payload || !Array.isArray(payload.objectives)) return out
+  for (const o of payload.objectives) {
+    const dim = dimensions.find((d: any) => d.key === o.dimension_key)
+    if (!dim) continue
+    const idx = (dim.objectives || []).findIndex((x: any) => x.name === o.name)
+    if (idx < 0) continue
+    const kpis = (o.kpis || []).map((k: any) => ({
+      code: k.kpi_code, name: k.kpi_name, actual: k.actual_value, target: k.target_value,
+      unit: k.unit, available: k.available, reason: k.reason,
+    }))
+    const ratios = (o.kpis || [])
+      .filter((k: any) => k.available && k.achievement_pct != null)
+      .map((k: any) => Number(k.achievement_pct))
+    out[`${o.dimension_key}-${idx}`] = {
+      ratio: ratios.length ? Math.round(ratios.reduce((a: number, b: number) => a + b, 0) / ratios.length) : 0,
+      level: o.has_data ? (o.level || 'gray') : 'gray',
+      kpiList: kpis,
+      slice: true,
+    }
+  }
+  return out
+})
+
+function onDimensionSlice(payload: any | null) {
+  dimSlice.value = payload
+  // 切回全景（payload=null）时恢复 /review 的原始状态
+  if (!payload) loadObjectiveLevels()
+}
+
 // 弹窗
 const showNodeDialog = ref(false)
 const editingNodeData = ref<any>(null)
@@ -429,9 +471,20 @@ function setLayerRef(key: string, el: any) {
 }
 
 function getNodeLevel(key: string): string {
+  if (dimSlice.value) return sliceByKey.value[key]?.level || 'gray'
   return objectiveLevels[key] || 'gray'
 }
 function getNodeProgress(key: string): any {
+  if (dimSlice.value) {
+    const s = sliceByKey.value[key]
+    return {
+      ratio: s?.ratio ?? 0,
+      level: s?.level || 'gray',
+      kpiList: s?.kpiList || [],
+      planSummary: kpiProgressMap[key]?.planSummary ?? null,
+      slice: true,
+    }
+  }
   return kpiProgressMap[key] || null
 }