diff --git a/next/backend/bootstrap/container.py b/next/backend/bootstrap/container.py
index 4dccfec..4e845d5 100644
--- a/next/backend/bootstrap/container.py
+++ b/next/backend/bootstrap/container.py
@@ -64,6 +64,6 @@ def build_container(settings: Settings) -> ApplicationContainer:
         system_credentials=credentials,
         model_pool=ModelPoolService(database, model_pool_repository, cipher),
         market=MarketService(
-            gateway, MarketSnapshotService(database, market_repository, tushare)
+            gateway, MarketSnapshotService(database, market_repository, gateway)
         ),
     )
diff --git a/next/backend/data/gateway.py b/next/backend/data/gateway.py
index bc2d7bd..e144d43 100644
--- a/next/backend/data/gateway.py
+++ b/next/backend/data/gateway.py
@@ -107,6 +107,68 @@ class DataGateway:
             row = self._repository.latest_summary(connection, context.actual_date)
         return {"context": context, "values": json.loads(str(row["payload_json"])) if row else None}
 
+    def snapshot_inputs(
+        self, trade_date: str, previous_trade_date: str
+    ) -> dict[str, Any]:
+        provider = self._provider(DataSource.TUSHARE)
+        self._policy.assert_allowed(provider.source, DataUsage.CALCULATION)
+        return provider.snapshot_inputs(trade_date, previous_trade_date)
+
+    def sector_members(
+        self, trade_date: str, sector_name: str, representative: str
+    ) -> dict[str, Any]:
+        with self._database.read() as connection:
+            cached = self._repository.sector_members(connection, trade_date, sector_name)
+        if cached:
+            return json.loads(str(cached["payload_json"]))
+        provider = self._provider(DataSource.TUSHARE)
+        self._policy.assert_allowed(provider.source, DataUsage.CALCULATION)
+        result = provider.sector_members(representative, trade_date)
+        if not result.rows:
+            raise MarketDataUnavailable("该板块暂无可核验的申万成分股")
+        rows = sorted(
+            (dict(row) for row in result.rows),
+            key=lambda row: (
+                bool(row.get("quoted")),
+                _number(row.get("change")),
+                _number(row.get("amount")),
+            ),
+            reverse=True,
+        )
+        payload = {
+            "trade_date": trade_date,
+            "sector_name": str(rows[0].get("sector_name") or sector_name),
+            "sector_code": str(rows[0].get("sector_code") or ""),
+            "member_count": len(rows),
+            "quoted_count": sum(bool(row.get("quoted")) for row in rows),
+            "coverage": round(result.metadata.coverage, 4),
+            "items": [
+                {
+                    "identifier": str(row.get("ts_code") or ""),
+                    "code": str(row.get("ts_code") or "").split(".")[0],
+                    "name": str(row.get("name") or ""),
+                    "change": row.get("change"),
+                    "open": row.get("open"),
+                    "close": row.get("close"),
+                    "amount": row.get("amount"),
+                    "quoted": bool(row.get("quoted")),
+                }
+                for row in rows
+            ],
+        }
+        with self._database.transaction() as connection:
+            self._repository.save_sector_members(
+                connection,
+                trade_date=trade_date,
+                sector_name=sector_name,
+                sector_code=payload["sector_code"],
+                observed_at=result.metadata.observed_at.isoformat(timespec="seconds"),
+                source=result.metadata.source.value,
+                coverage=result.metadata.coverage,
+                payload=payload,
+            )
+        return payload
+
     def search(self, query: str) -> tuple[MarketEntity, ...]:
         with self._database.read() as connection:
             return self._repository.search(connection, query)
diff --git a/next/backend/data/providers/base.py b/next/backend/data/providers/base.py
index d6b5655..03b3e99 100644
--- a/next/backend/data/providers/base.py
+++ b/next/backend/data/providers/base.py
@@ -26,3 +26,5 @@ class MarketDataProvider(Protocol):
     def snapshot_inputs(
         self, trade_date: str, previous_trade_date: str
     ) -> dict[str, ProviderResult | dict[str, Any]]: ...
+
+    def sector_members(self, representative: str, trade_date: str) -> ProviderResult: ...
diff --git a/next/backend/data/providers/eastmoney.py b/next/backend/data/providers/eastmoney.py
index b2527dc..726a6e7 100644
--- a/next/backend/data/providers/eastmoney.py
+++ b/next/backend/data/providers/eastmoney.py
@@ -99,6 +99,9 @@ class EastmoneyProvider:
     ) -> dict[str, ProviderResult | dict[str, object]]:
         raise ProviderError("The display provider cannot build market snapshots")
 
+    def sector_members(self, representative: str, trade_date: str) -> ProviderResult:
+        raise ProviderError("The display provider is not the constituent authority")
+
     @staticmethod
     def _secid(entity_type: str, identifier: str) -> str:
         if entity_type == "index" and identifier in INDEX_CODES:
diff --git a/next/backend/data/providers/ifind.py b/next/backend/data/providers/ifind.py
index e57fa23..7389277 100644
--- a/next/backend/data/providers/ifind.py
+++ b/next/backend/data/providers/ifind.py
@@ -89,6 +89,9 @@ class IfindProvider:
     ) -> dict[str, ProviderResult | dict[str, Any]]:
         raise ProviderError("iFinD is not the post-close snapshot authority")
 
+    def sector_members(self, representative: str, trade_date: str) -> ProviderResult:
+        raise ProviderError("iFinD is not the Shenwan constituent authority")
+
     def _request(self, endpoint: str, body: dict[str, Any]) -> dict[str, Any]:
         if not self.configured:
             raise ProviderError("实时行情服务尚未配置")
diff --git a/next/backend/data/providers/tushare.py b/next/backend/data/providers/tushare.py
index 69c8c00..60993c1 100644
--- a/next/backend/data/providers/tushare.py
+++ b/next/backend/data/providers/tushare.py
@@ -130,6 +130,82 @@ class TushareProvider:
             )
         return datasets
 
+    def sector_members(self, representative: str, trade_date: str) -> ProviderResult:
+        target = _compact(trade_date)
+        memberships = self._membership_rows({"ts_code": representative})
+        active = [row for row in memberships if _active_on(row, target)]
+        if not active:
+            raise ProviderError("未找到该股票在目标日期的申万行业")
+        industry = max(
+            active,
+            key=lambda row: (
+                str(row.get("in_date") or ""),
+                str(row.get("l2_code") or ""),
+            ),
+        )
+        sector_code = str(industry.get("l2_code") or "")
+        sector_name = str(industry.get("l2_name") or "").strip()
+        if not sector_code:
+            raise ProviderError("该股票缺少申万二级行业")
+        members = [
+            row
+            for row in self._membership_rows({"l2_code": sector_code})
+            if _active_on(row, target)
+        ]
+        deduplicated: dict[str, dict[str, Any]] = {}
+        for row in members:
+            code = str(row.get("ts_code") or "")
+            current = deduplicated.get(code)
+            if code and (
+                current is None
+                or str(row.get("in_date") or "") > str(current.get("in_date") or "")
+            ):
+                deduplicated[code] = row
+        if not deduplicated:
+            raise ProviderError("该申万行业没有有效成分股")
+        daily = self._query(
+            "daily",
+            {"trade_date": target},
+            "ts_code,trade_date,open,close,pct_chg,amount",
+            unit="mixed",
+        )
+        quote_map = {str(row.get("ts_code") or ""): row for row in daily.rows}
+        rows = []
+        for code, member in deduplicated.items():
+            quote = quote_map.get(code) or {}
+            rows.append(
+                {
+                    "sector_code": sector_code,
+                    "sector_name": sector_name,
+                    "ts_code": code,
+                    "name": str(member.get("name") or "").strip(),
+                    "change": _number(quote.get("pct_chg")) if quote else None,
+                    "open": _number(quote.get("open")) if quote else None,
+                    "close": _number(quote.get("close")) if quote else None,
+                    "amount": _number(quote.get("amount")) * 1000 if quote else None,
+                    "quoted": bool(quote),
+                }
+            )
+        coverage = sum(bool(row["quoted"]) for row in rows) / len(rows)
+        return ProviderResult(tuple(rows), _metadata(self.source, "mixed", coverage))
+
+    def _membership_rows(self, params: dict[str, str]) -> list[dict[str, Any]]:
+        rows: list[dict[str, Any]] = []
+        fields = (
+            "l1_code,l1_name,l2_code,l2_name,l3_code,l3_name,"
+            "ts_code,name,in_date,out_date,is_new"
+        )
+        for is_new in ("Y", "N"):
+            result = self._query(
+                "index_member_all",
+                {**params, "is_new": is_new},
+                fields,
+                unit="membership",
+                empty_is_complete=True,
+            )
+            rows.extend(result.rows)
+        return rows
+
     def _query(
         self,
         api_name: str,
@@ -197,3 +273,17 @@ def _compact(value: str) -> str:
 def _display(value: str) -> str:
     compact = _compact(value)
     return f"{compact[:4]}-{compact[4:6]}-{compact[6:]}"
+
+
+def _active_on(row: dict[str, Any], trade_date: str) -> bool:
+    start = str(row.get("in_date") or "")
+    end = str(row.get("out_date") or "")
+    return (not start or start <= trade_date) and (not end or end > trade_date)
+
+
+def _number(value: Any) -> float:
+    try:
+        number = float(value)
+        return number if number == number else 0.0
+    except (TypeError, ValueError):
+        return 0.0
diff --git a/next/backend/data/repository.py b/next/backend/data/repository.py
index 715ce4f..b99e5c5 100644
--- a/next/backend/data/repository.py
+++ b/next/backend/data/repository.py
@@ -188,6 +188,52 @@ class MarketRepository:
             (through,),
         ).fetchone()
 
+    def sector_members(
+        self, connection: sqlite3.Connection, trade_date: str, sector_name: str
+    ) -> sqlite3.Row | None:
+        return connection.execute(
+            """
+            SELECT * FROM sector_member_snapshots
+            WHERE trade_date = ? AND sector_name = ?
+            """,
+            (trade_date, sector_name),
+        ).fetchone()
+
+    def save_sector_members(
+        self,
+        connection: sqlite3.Connection,
+        *,
+        trade_date: str,
+        sector_name: str,
+        sector_code: str,
+        observed_at: str,
+        source: str,
+        coverage: float,
+        payload: dict[str, Any],
+    ) -> None:
+        connection.execute(
+            """
+            INSERT INTO sector_member_snapshots (
+                trade_date, sector_name, sector_code, observed_at, source, coverage, payload_json
+            ) VALUES (?, ?, ?, ?, ?, ?, ?)
+            ON CONFLICT(trade_date, sector_name) DO UPDATE SET
+                sector_code = excluded.sector_code,
+                observed_at = excluded.observed_at,
+                source = excluded.source,
+                coverage = excluded.coverage,
+                payload_json = excluded.payload_json
+            """,
+            (
+                trade_date,
+                sector_name,
+                sector_code,
+                observed_at,
+                source,
+                coverage,
+                json.dumps(payload, ensure_ascii=False, separators=(",", ":")),
+            ),
+        )
+
     def save_chart(
         self,
         connection: sqlite3.Connection,
diff --git a/next/backend/database/migrations/m0004_sector_members.py b/next/backend/database/migrations/m0004_sector_members.py
new file mode 100644
index 0000000..b5f4990
--- /dev/null
+++ b/next/backend/database/migrations/m0004_sector_members.py
@@ -0,0 +1,35 @@
+from __future__ import annotations
+
+import sqlite3
+
+from backend.database.migrations.runner import Migration
+
+
+def upgrade(connection: sqlite3.Connection) -> None:
+    connection.execute(
+        """
+        CREATE TABLE sector_member_snapshots (
+            trade_date TEXT NOT NULL,
+            sector_name TEXT NOT NULL,
+            sector_code TEXT NOT NULL,
+            observed_at TEXT NOT NULL,
+            source TEXT NOT NULL,
+            coverage REAL NOT NULL CHECK (coverage >= 0 AND coverage <= 1),
+            payload_json TEXT NOT NULL,
+            PRIMARY KEY (trade_date, sector_name)
+        )
+        """
+    )
+
+
+def downgrade(connection: sqlite3.Connection) -> None:
+    connection.execute("DROP TABLE sector_member_snapshots")
+
+
+MIGRATION = Migration(
+    version=4,
+    name="create_sector_member_snapshots",
+    signature="market:v2:dated-shenwan-sector-members",
+    upgrade=upgrade,
+    downgrade=downgrade,
+)
diff --git a/next/backend/database/migrations/registry.py b/next/backend/database/migrations/registry.py
index 7192df9..2e3c4a7 100644
--- a/next/backend/database/migrations/registry.py
+++ b/next/backend/database/migrations/registry.py
@@ -1,6 +1,7 @@
 from backend.database.migrations.m0001_accounts import MIGRATION as ACCOUNTS
 from backend.database.migrations.m0002_model_pool import MIGRATION as MODEL_POOL
 from backend.database.migrations.m0003_market_foundation import MIGRATION as MARKET_FOUNDATION
+from backend.database.migrations.m0004_sector_members import MIGRATION as SECTOR_MEMBERS
 from backend.database.migrations.runner import Migration
 
-MIGRATIONS: tuple[Migration, ...] = (ACCOUNTS, MODEL_POOL, MARKET_FOUNDATION)
+MIGRATIONS: tuple[Migration, ...] = (ACCOUNTS, MODEL_POOL, MARKET_FOUNDATION, SECTOR_MEMBERS)
diff --git a/next/backend/features/market/routes.py b/next/backend/features/market/routes.py
index b9469a0..a6dabae 100644
--- a/next/backend/features/market/routes.py
+++ b/next/backend/features/market/routes.py
@@ -10,6 +10,7 @@ from backend.features.market.schemas import (
     MarketSummaryResponse,
     MarketWorkspaceResponse,
     ReferenceSyncResponse,
+    RotationMembersResponse,
     SearchResponse,
     SnapshotSyncResponse,
     TradeContextResponse,
@@ -75,9 +76,22 @@ def workspace(
     request: Request,
     _principal: AuthenticatedPrincipal,
     key: Annotated[
-        Literal["emotion", "pool", "broken", "limit-down", "yesterday", "performance"],
+        Literal[
+            "emotion", "pool", "broken", "limit-down", "yesterday", "performance",
+            "ladder", "rotation",
+        ],
         Path(),
     ],
     requested_date: Annotated[str | None, Query(alias="date")] = None,
 ) -> dict:
     return request.app.state.container.market.workspace(key, requested_date)
+
+
+@router.get("/rotation-members", response_model=RotationMembersResponse)
+def rotation_members(
+    request: Request,
+    _principal: AuthenticatedPrincipal,
+    sector_name: Annotated[str, Query(alias="sector", min_length=1, max_length=60)],
+    requested_date: Annotated[str | None, Query(alias="date")] = None,
+) -> dict:
+    return request.app.state.container.market.rotation_members(sector_name, requested_date)
diff --git a/next/backend/features/market/schemas.py b/next/backend/features/market/schemas.py
index fb49145..d38de9a 100644
--- a/next/backend/features/market/schemas.py
+++ b/next/backend/features/market/schemas.py
@@ -91,3 +91,13 @@ class MarketWorkspaceResponse(BaseModel):
     sentiment: dict[str, Any] | None = None
     history: list[dict[str, Any]] | None = None
     items: list[dict[str, Any]] | None = None
+
+
+class RotationMembersResponse(BaseModel):
+    trade_date: str
+    sector_name: str
+    sector_code: str
+    member_count: int = Field(ge=0)
+    quoted_count: int = Field(ge=0)
+    coverage: float = Field(ge=0, le=1)
+    items: list[dict[str, Any]] = Field(default_factory=list)
diff --git a/next/backend/features/market/service.py b/next/backend/features/market/service.py
index 7042bb3..2ea64cd 100644
--- a/next/backend/features/market/service.py
+++ b/next/backend/features/market/service.py
@@ -84,6 +84,16 @@ class MarketService:
     def workspace(self, key: str, requested_date: str | None = None) -> dict[str, Any]:
         return self._call(self._snapshots.workspace, key, requested_date)
 
+    def rotation_members(
+        self, sector_name: str, requested_date: str | None = None
+    ) -> dict[str, Any]:
+        trade_date, representative = self._call(
+            self._snapshots.rotation_member_target, requested_date, sector_name
+        )
+        return self._call(
+            self._gateway.sector_members, trade_date, sector_name, representative
+        )
+
     @staticmethod
     def _call(function, *args):
         try:
diff --git a/next/backend/features/market/snapshot.py b/next/backend/features/market/snapshot.py
index 0c05047..22eaede 100644
--- a/next/backend/features/market/snapshot.py
+++ b/next/backend/features/market/snapshot.py
@@ -16,6 +16,7 @@ def build_snapshot(
     limits = _pool(_rows(inputs, "limit_up"), "涨停")
     broken = _pool(_rows(inputs, "broken"), "炸板")
     down_limits = _pool(_rows(inputs, "limit_down"), "跌停")
+    previous_limits = _pool(_rows(inputs, "previous_limit_up"), "涨停")
     price_limits = {str(row.get("ts_code") or ""): row for row in _rows(inputs, "price_limits")}
     for row in broken:
         up_limit = _number(price_limits.get(row["identifier"], {}).get("up_limit"))
@@ -24,7 +25,7 @@ def build_snapshot(
         )
 
     yesterday = _yesterday(
-        _pool(_rows(inputs, "previous_limit_up"), "涨停"),
+        previous_limits,
         daily,
         limits,
         broken,
@@ -35,6 +36,8 @@ def build_snapshot(
     flat_count = len(daily_rows) - up_count - down_count
     amount = sum(_number(row.get("amount")) * 1000 for row in daily_rows)
     seal_rate = len(limits) / max(len(limits) + len(broken), 1) * 100
+    sectors = _sectors(limits)
+    previous_sectors = _sectors(previous_limits)
     overview = {
         "up_count": up_count,
         "down_count": down_count,
@@ -54,6 +57,9 @@ def build_snapshot(
         "down_limits": down_limits,
         "yesterday_limits": yesterday,
         "limit_performance": _performance(yesterday),
+        "ladders": _ladders(limits),
+        "sectors": sectors,
+        "sector_rotation": _rotation(sectors, previous_sectors),
     }
 
 
@@ -161,6 +167,69 @@ def _performance(rows: list[dict[str, Any]]) -> list[dict[str, Any]]:
     return result
 
 
+def _ladders(rows: list[dict[str, Any]]) -> list[dict[str, Any]]:
+    levels = sorted({int(row["streak"]) for row in rows}, reverse=True)
+    return [
+        {
+            "level": level,
+            "label": "首板" if level == 1 else f"{level}板",
+            "count": sum(int(row["streak"]) == level for row in rows),
+            "stocks": sorted(
+                (row for row in rows if int(row["streak"]) == level),
+                key=lambda row: row.get("first_time") or "99:99",
+            ),
+        }
+        for level in levels
+    ]
+
+
+def _sectors(rows: list[dict[str, Any]]) -> list[dict[str, Any]]:
+    names = sorted({str(row.get("sector") or "").strip() for row in rows} - {""})
+    result = []
+    for name in names:
+        stocks = [row for row in rows if str(row.get("sector") or "").strip() == name]
+        leader = max(stocks, key=lambda row: (int(row["streak"]), _number(row["amount"])))
+        max_streak = max(int(row["streak"]) for row in stocks)
+        count = len(stocks)
+        result.append(
+            {
+                "name": name,
+                "count": count,
+                "strength": min(100, 44 + count * 8 + max_streak * 5),
+                "amount": round(sum(_number(row["amount"]) for row in stocks), 2),
+                "leader": leader["name"],
+                "representative": leader["identifier"],
+                "change": round(mean(_number(row["change"]) for row in stocks), 2),
+                "max_streak": max_streak,
+            }
+        )
+    return sorted(
+        result,
+        key=lambda row: (int(row["count"]), int(row["max_streak"]), _number(row["amount"])),
+        reverse=True,
+    )[:20]
+
+
+def _rotation(
+    current: list[dict[str, Any]], previous: list[dict[str, Any]]
+) -> list[dict[str, Any]]:
+    previous_map = {str(row["name"]): row for row in previous}
+    result = []
+    for rank, sector in enumerate(current[:12], start=1):
+        previous_count = int(previous_map.get(str(sector["name"]), {}).get("count") or 0)
+        delta = int(sector["count"]) - previous_count
+        result.append(
+            {
+                **sector,
+                "rank": rank,
+                "previous_count": previous_count,
+                "delta": delta,
+                "trend": "升温" if delta > 0 else "降温" if delta < 0 else "持平",
+            }
+        )
+    return result
+
+
 def _number(value: Any, default: float = 0.0) -> float:
     try:
         number = float(value)
diff --git a/next/backend/features/market/sync.py b/next/backend/features/market/sync.py
index 7156504..70b852a 100644
--- a/next/backend/features/market/sync.py
+++ b/next/backend/features/market/sync.py
@@ -6,8 +6,8 @@ from typing import Any
 from zoneinfo import ZoneInfo
 
 from backend.data.contracts import ProviderResult, SnapshotState
+from backend.data.gateway import DataGateway, MarketDataUnavailable
 from backend.data.providers.base import ProviderError
-from backend.data.providers.tushare import TushareProvider
 from backend.data.repository import MarketRepository
 from backend.database.connection import Database
 from backend.features.market.sentiment import calculate_sentiment
@@ -22,11 +22,11 @@ class SnapshotSyncError(RuntimeError):
 
 class MarketSnapshotService:
     def __init__(
-        self, database: Database, repository: MarketRepository, provider: TushareProvider
+        self, database: Database, repository: MarketRepository, gateway: DataGateway
     ) -> None:
         self._database = database
         self._repository = repository
-        self._provider = provider
+        self._gateway = gateway
 
     def sync(
         self, requested_date: str | None = None, now: datetime | None = None
@@ -47,8 +47,8 @@ class MarketSnapshotService:
             raise SnapshotSyncError("请先同步股票目录")
         trade_date, previous_date = dates[0], dates[1]
         try:
-            inputs = self._provider.snapshot_inputs(trade_date, previous_date)
-        except ProviderError as exc:
+            inputs = self._gateway.snapshot_inputs(trade_date, previous_date)
+        except (ProviderError, MarketDataUnavailable) as exc:
             raise SnapshotSyncError("收盘行情读取失败，已保留原有快照") from exc
         daily = inputs.get("daily")
         if not isinstance(daily, ProviderResult):
@@ -126,10 +126,45 @@ class MarketSnapshotService:
             response["items"] = payload.get("yesterday_limits") or []
         elif key == "performance":
             response["items"] = payload.get("limit_performance") or []
+        elif key == "ladder":
+            response["items"] = payload.get("ladders") or []
+            response["history"] = payload.get("limit_performance") or []
+        elif key == "rotation":
+            response["history"] = [
+                {
+                    "trade_date": item_payload.get("trade_date"),
+                    "sectors": item_payload.get("sector_rotation") or [],
+                }
+                for item_payload in (
+                    json.loads(str(item["payload_json"])) for item in history_rows[-9:]
+                )
+            ]
         else:
             raise SnapshotSyncError("不支持的市场工作区")
         return response
 
+    def rotation_member_target(
+        self, requested_date: str | None, sector_name: str
+    ) -> tuple[str, str]:
+        requested = _date(requested_date or datetime.now(SHANGHAI).date().isoformat())
+        with self._database.read() as connection:
+            row = self._repository.latest_summary(connection, requested)
+        if row is None:
+            raise SnapshotSyncError("等待管理员首次同步真实收盘行情")
+        payload = json.loads(str(row["payload_json"]))
+        sector = next(
+            (
+                item
+                for item in payload.get("sectors") or []
+                if str(item.get("name") or "") == sector_name
+            ),
+            None,
+        )
+        representative = str((sector or {}).get("representative") or "")
+        if not representative:
+            raise SnapshotSyncError("该板块缺少可核验的代表股票")
+        return str(row["trade_date"]), representative
+
 
 def _history_item(payload: dict[str, Any]) -> dict[str, Any]:
     sentiment = payload.get("sentiment") or {}
diff --git a/next/docs/evidence/stage-7/README.md b/next/docs/evidence/stage-7/README.md
new file mode 100644
index 0000000..4acf942
--- /dev/null
+++ b/next/docs/evidence/stage-7/README.md
@@ -0,0 +1,49 @@
+# 阶段 7 验收记录
+
+## 交付范围
+
+- 市场天梯：动态连板层级、断层保留、等宽个股单元格、封板时间/开板次数排序、展开收起与 CSV 导出。
+- 板块轮动：九个交易日 Top12、远近日期切换、跨日板块高亮、强度层级与指定交易日成分股。
+- 涨停表现回归：沿用阶段 6 的唯一实现，本阶段只做跨页回归，不复制统计公式。
+- 桌面端与 390px 移动端均使用全页滚动，内容不横向溢出。
+
+## 数据与结构
+
+- 天梯和板块轮动均消费阶段 6 的同一份日度市场快照，不建立页面专属快照表。
+- 板块轮动由当日涨停股按行业聚合，统一计算涨停家数、最高连板、成交额、领涨股、强度与相邻交易日趋势。
+- 九日轨迹读取已归档的日度快照，不在前端重复推导。
+- 成分股按请求交易日读取申万二级成员关系和日线行情；停牌或缺少行情的成员保留在结果末尾，字段保持空值。
+- 数据库版本 4 只增加 `sector_member_snapshots` 成分股快照缓存，避免重复外部请求；未引入通用缓存框架。
+- `MarketSnapshotService` 已收敛为只调用 `DataGateway`，移除其直接依赖行情供应商的出口。
+
+## 自动验收
+
+- Ruff：通过。
+- Pytest：50 项通过。
+- Vue TypeScript 检查：通过。
+- Vitest：2 个文件、5 项通过。
+- Vite 生产构建：通过。
+- Playwright：5 项通过，覆盖阶段 4 至 7 的完整回归。
+- 夜间模式切换即时使用最终设计令牌，不保留板块热度背景的中间过渡色。
+- 敏感值扫描：已提供的账号密码和令牌未进入 `next/`。
+- `git diff --check`：通过。
+
+## 视觉证据
+
+- `ladder-light-1920x1080.jpg`：市场天梯日间桌面视图。
+- `rotation-dark-1920x1080.jpg`：板块轮动夜间桌面视图。
+- `rotation-dark-390x844.jpg`：板块轮动夜间移动视图。
+
+## 减法证据
+
+- 天梯、轮动、情绪与股池只使用一份权威日度快照。
+- 涨停表现没有因阶段范围重叠而形成第二套实现。
+- 成分股接口、Schema、持久化和前端请求均只有一个出口。
+- 新增页面分别为 106 行和 126 行；市场页面样式总计 415 行，均低于章程门禁。
+- 未复制旧系统巨型文件、兼容层、供应商客户端或页面专属数据网关。
+
+## 剩余边界
+
+- 阶段 8 才迁移集合竞价、题材库、人气热榜和龙虎榜。
+- 当前外部数据的真实可用性仍由管理员凭据和供应商权限决定；质量门失败时不生成模拟业务数据。
+- NAS 生产容器保持不变，最终切换仍需人工明确确认。
diff --git a/next/docs/evidence/stage-7/ladder-light-1920x1080.jpg b/next/docs/evidence/stage-7/ladder-light-1920x1080.jpg
new file mode 100644
index 0000000..22a4ad4
Binary files /dev/null and b/next/docs/evidence/stage-7/ladder-light-1920x1080.jpg differ
diff --git a/next/docs/evidence/stage-7/rotation-dark-1920x1080.jpg b/next/docs/evidence/stage-7/rotation-dark-1920x1080.jpg
new file mode 100644
index 0000000..4fc85af
Binary files /dev/null and b/next/docs/evidence/stage-7/rotation-dark-1920x1080.jpg differ
diff --git a/next/docs/evidence/stage-7/rotation-dark-390x844.jpg b/next/docs/evidence/stage-7/rotation-dark-390x844.jpg
new file mode 100644
index 0000000..d2d6deb
Binary files /dev/null and b/next/docs/evidence/stage-7/rotation-dark-390x844.jpg differ
diff --git a/next/frontend/src/app/views/WorkspaceView.vue b/next/frontend/src/app/views/WorkspaceView.vue
index 46d4b43..7dbad00 100644
--- a/next/frontend/src/app/views/WorkspaceView.vue
+++ b/next/frontend/src/app/views/WorkspaceView.vue
@@ -18,7 +18,7 @@ const locked = computed(
   () => ["screener", "mentor", "heaven"].includes(workspace.value.key) && !session.account?.smart_access,
 );
 const implementedMarket = computed(() =>
-  ["emotion", "pool", "broken", "limit-down", "yesterday", "performance"].includes(
+  ["emotion", "pool", "broken", "limit-down", "yesterday", "performance", "ladder", "rotation"].includes(
     workspace.value.key,
   ),
 );
diff --git a/next/frontend/src/pages/market/MarketWorkspaceView.vue b/next/frontend/src/pages/market/MarketWorkspaceView.vue
index e5f501c..9e0f185 100644
--- a/next/frontend/src/pages/market/MarketWorkspaceView.vue
+++ b/next/frontend/src/pages/market/MarketWorkspaceView.vue
@@ -5,6 +5,8 @@ import { marketApi, type MarketWorkspaceData } from "../../shared/api/market";
 import EmptyState from "../../shared/components/EmptyState.vue";
 import { useMarketStore } from "../../shared/stores/market";
 import EmotionPage from "./emotion/EmotionPage.vue";
+import LadderPage from "./structure/LadderPage.vue";
+import RotationPage from "./structure/RotationPage.vue";
 import PerformancePage from "./pools/PerformancePage.vue";
 import PoolPage from "./pools/PoolPage.vue";
 
@@ -38,6 +40,8 @@ watch([() => props.workspaceKey, () => market.selectedDate], () => void load(),
     <EmptyState v-else-if="error" title="页面数据暂不可用" :description="error" class="card" />
     <EmptyState v-else-if="!data?.trade_date" title="暂无真实行情快照" :description="data?.message || '等待管理员首次同步真实收盘行情'" class="card" />
     <EmotionPage v-else-if="workspaceKey === 'emotion'" :data="data" />
+    <LadderPage v-else-if="workspaceKey === 'ladder'" :data="data" />
+    <RotationPage v-else-if="workspaceKey === 'rotation'" :data="data" />
     <PerformancePage v-else-if="workspaceKey === 'performance'" :data="data" />
     <PoolPage v-else :kind="workspaceKey" :data="data" />
   </main>
diff --git a/next/frontend/src/pages/market/structure/LadderPage.vue b/next/frontend/src/pages/market/structure/LadderPage.vue
new file mode 100644
index 0000000..5ab4e3d
--- /dev/null
+++ b/next/frontend/src/pages/market/structure/LadderPage.vue
@@ -0,0 +1,106 @@
+<script setup lang="ts">
+import { computed, reactive, ref } from "vue";
+
+import type { MarketWorkspaceData } from "../../../shared/api/market";
+
+const props = defineProps<{ data: MarketWorkspaceData }>();
+const sortMode = ref<"time" | "open">("time");
+const expanded = reactive(new Set<number>());
+const sourceGroups = computed(() => props.data.items ?? []);
+const maxLevel = computed(() => Math.max(0, ...sourceGroups.value.map((group) => Number(group.level ?? 0))));
+const topLevel = computed(() => Math.max(5, maxLevel.value));
+const groups = computed(() => {
+  const byLevel = new Map(sourceGroups.value.map((group) => [Number(group.level), group]));
+  const normalized = Array.from({ length: topLevel.value }, (_, index) => {
+    const level = topLevel.value - index;
+    const source = byLevel.get(level) ?? { level, label: level === 1 ? "首板" : `${level}板`, count: 0, stocks: [] };
+    const stocks = [...((source.stocks as Record<string, unknown>[] | undefined) ?? [])].sort((left, right) => {
+      if (sortMode.value === "open") {
+        return Number(left.open_times ?? 0) - Number(right.open_times ?? 0)
+          || String(left.first_time ?? "99:99").localeCompare(String(right.first_time ?? "99:99"));
+      }
+      return String(left.first_time ?? "99:99").localeCompare(String(right.first_time ?? "99:99"));
+    });
+    const limit = level <= 2 ? 8 : stocks.length;
+    return {
+      level,
+      label: String(source.label ?? (level === 1 ? "首板" : `${level}板`)),
+      count: Number(source.count ?? stocks.length),
+      stocks,
+      visible: expanded.has(level) ? stocks : stocks.slice(0, limit),
+      hidden: Math.max(0, stocks.length - limit),
+    };
+  });
+  return normalized.map((group) => {
+    const lower = normalized.find((item) => item.level === group.level - 1);
+    return {
+      ...group,
+      adjacentRate: lower?.count ? group.count / lower.count * 100 : null,
+    };
+  });
+});
+const completeness = computed(() => maxLevel.value
+  ? sourceGroups.value.filter((group) => Number(group.count ?? 0) > 0).length / maxLevel.value * 100
+  : 0);
+const priorPerformance = computed(() => props.data.history ?? []);
+const priorHeight = computed(() => Math.max(0, ...priorPerformance.value.map((row) => Number(row.level ?? 0))));
+const heightMessage = computed(() => {
+  if (!maxLevel.value) return "当前没有连板梯队。";
+  if (!priorPerformance.value.length) return "暂无昨日梯队样本，先观察当前结构。";
+  if (maxLevel.value > priorHeight.value) return `较昨日${priorHeight.value}板抬升，市场空间打开。`;
+  if (maxLevel.value < priorHeight.value) return `较昨日${priorHeight.value}板回落，市场空间压缩。`;
+  return "市场高度与昨日接近，继续观察梯队承接。";
+});
+
+function toggle(level: number): void {
+  if (expanded.has(level)) expanded.delete(level);
+  else expanded.add(level);
+}
+
+function exportCsv(): void {
+  const lines = [["高度", "代码", "股票", "板块", "首封", "开板次数", "成交额（亿）"]];
+  for (const group of groups.value) {
+    for (const stock of group.stocks) {
+      lines.push([
+        `${group.level}板`, String(stock.code ?? ""), String(stock.name ?? ""),
+        String(stock.sector ?? ""), String(stock.first_time ?? ""), String(stock.open_times ?? ""),
+        (Number(stock.amount ?? 0) / 100_000_000).toFixed(2),
+      ]);
+    }
+  }
+  const content = lines.map((line) => line.map((value) => `"${value.replaceAll('"', '""')}"`).join(",")).join("\r\n");
+  const link = document.createElement("a");
+  link.href = URL.createObjectURL(new Blob(["\ufeff", content], { type: "text/csv;charset=utf-8" }));
+  link.download = `市场天梯-${props.data.trade_date}.csv`;
+  link.click();
+  URL.revokeObjectURL(link.href);
+}
+</script>
+
+<template>
+  <header class="page-header market-page-header">
+    <div><h1>市场天梯</h1><p class="page-subtitle">按连板高度观察空间与梯队完整度 · 数据日期 {{ data.trade_date }}</p></div>
+    <div class="page-actions"><div class="seg-control"><button type="button" :class="{ active: sortMode === 'time' }" @click="sortMode = 'time'">按封板时间</button><button type="button" :class="{ active: sortMode === 'open' }" @click="sortMode = 'open'">按开板次数</button></div><button class="btn btn-small" type="button" @click="exportCsv">导出 CSV</button></div>
+  </header>
+  <section class="ladder-layout">
+    <div class="card ladder-board">
+      <section v-for="group in groups" :key="group.level" class="ladder-level" :class="{ 'is-gap': !Number(group.count) }">
+        <header><div><strong>{{ group.level === 1 ? "首板" : `${group.level}板` }}</strong><span>{{ group.count }}只</span></div><small v-if="group.level > 1 && Number(group.count)">{{ group.adjacentRate === null ? "相邻梯队断层" : `相邻梯队 ${group.adjacentRate.toFixed(1)}%` }}</small></header>
+        <div class="ladder-stocks">
+          <article v-for="stock in group.visible" :key="String(stock.identifier)" class="ladder-stock">
+            <div><strong>{{ stock.name }}</strong><span>{{ stock.code }}</span></div>
+            <p><b>{{ stock.sector || "其他" }}</b><span>{{ stock.first_time || "时间待校正" }}</span></p>
+            <small>开板 {{ stock.open_times }}次 · 成交 {{ (Number(stock.amount ?? 0) / 100_000_000).toFixed(2) }}亿</small>
+          </article>
+          <p v-if="!group.visible.length" class="ladder-gap-note">该层暂时空缺</p>
+          <button v-if="group.stocks.length > 8 && group.level <= 2" class="ladder-expand" type="button" @click="toggle(group.level)">{{ expanded.has(group.level) ? "收起" : `展开更多（${group.hidden}）` }}</button>
+        </div>
+      </section>
+    </div>
+    <aside class="ladder-insights">
+      <article class="card"><header class="card-header"><h2>市场高度</h2></header><div class="ladder-insight-body"><strong>{{ maxLevel ? `${maxLevel}板` : "--" }}</strong><p>{{ heightMessage }}</p></div></article>
+      <article class="card"><header class="card-header"><h2>梯队完整度</h2></header><div class="ladder-insight-body"><strong>{{ completeness.toFixed(1) }}%</strong><div class="score-track"><span :style="{ width: `${completeness}%` }"></span></div><p>从首板到最高板之间存在的真实高度比例。</p></div></article>
+      <article class="card"><header class="card-header"><h2>昨日梯队 → 今日</h2></header><div class="ladder-rate-list"><div v-for="row in priorPerformance" :key="String(row.level)"><span>昨日{{ row.level }}板</span><div class="score-track"><span :style="{ width: `${row.advance_rate}%` }"></span></div><strong>{{ row.advance_rate }}%</strong></div></div></article>
+    </aside>
+  </section>
+</template>
diff --git a/next/frontend/src/pages/market/structure/RotationPage.vue b/next/frontend/src/pages/market/structure/RotationPage.vue
new file mode 100644
index 0000000..4907ea3
--- /dev/null
+++ b/next/frontend/src/pages/market/structure/RotationPage.vue
@@ -0,0 +1,126 @@
+<script setup lang="ts">
+import { computed, ref } from "vue";
+
+import { marketApi, type MarketWorkspaceData, type RotationMembersData } from "../../../shared/api/market";
+import DataTable from "../../../shared/components/DataTable.vue";
+import EmptyState from "../../../shared/components/EmptyState.vue";
+
+const props = defineProps<{ data: MarketWorkspaceData }>();
+const order = ref<"oldest" | "latest">("oldest");
+const selectedSector = ref("");
+const selectedDate = ref("");
+const members = ref<RotationMembersData | null>(null);
+const memberLoading = ref(false);
+const memberError = ref("");
+const history = computed(() => order.value === "oldest" ? props.data.history ?? [] : [...(props.data.history ?? [])].reverse());
+const appearances = computed(() => (props.data.history ?? []).map((day) => ({
+  trade_date: day.trade_date,
+  sector: ((day.sectors as Record<string, unknown>[] | undefined) ?? []).find((item) => item.name === selectedSector.value),
+})).filter((item) => item.sector));
+const memberColumns = [
+  { key: "code", label: "代码", code: true, sortable: true },
+  { key: "name", label: "股票", sortable: true },
+  { key: "change", label: "涨跌幅（%）", numeric: true, sortable: true, format: percent },
+  { key: "open", label: "开盘（元）", numeric: true, sortable: true, format: decimal },
+  { key: "close", label: "收盘（元）", numeric: true, sortable: true, format: decimal },
+  { key: "amount", label: "成交额（亿）", numeric: true, sortable: true, format: amount },
+  { key: "quoted", label: "行情状态", format: (value: unknown) => value ? "正常交易" : "当日无行情" },
+];
+const sortKey = ref("change");
+const sortDirection = ref<"asc" | "desc">("desc");
+const memberRows = computed(() => {
+  const rows = members.value?.items ?? [];
+  const direction = sortDirection.value === "asc" ? 1 : -1;
+  return [...rows].sort((left, right) => {
+    if (Boolean(left.quoted) !== Boolean(right.quoted)) return left.quoted ? -1 : 1;
+    return compare(left[sortKey.value], right[sortKey.value]) * direction;
+  });
+});
+
+async function selectSector(sector: Record<string, unknown>, tradeDate: unknown): Promise<void> {
+  const name = String(sector.name ?? "");
+  const date = String(tradeDate ?? "");
+  if (name === selectedSector.value && date === selectedDate.value) {
+    selectedSector.value = ""; selectedDate.value = ""; members.value = null; memberError.value = "";
+    return;
+  }
+  selectedSector.value = name;
+  selectedDate.value = date;
+  memberLoading.value = true;
+  memberError.value = "";
+  try {
+    members.value = await marketApi.rotationMembers(name, date);
+  } catch (error) {
+    members.value = null;
+    memberError.value = error instanceof Error ? error.message : "板块成分股读取失败";
+  } finally {
+    memberLoading.value = false;
+  }
+}
+
+function sort(key: string): void {
+  if (sortKey.value === key) sortDirection.value = sortDirection.value === "asc" ? "desc" : "asc";
+  else { sortKey.value = key; sortDirection.value = "desc"; }
+}
+
+function exportCsv(): void {
+  const lines = [["日期", "排名", "板块", "涨停家数", "强度", "领涨股"]];
+  for (const day of props.data.history ?? []) {
+    for (const sector of (day.sectors as Record<string, unknown>[] | undefined) ?? []) {
+      lines.push([String(day.trade_date ?? ""), String(sector.rank ?? ""), String(sector.name ?? ""), String(sector.count ?? ""), String(sector.strength ?? ""), String(sector.leader ?? "")]);
+    }
+  }
+  const content = lines.map((line) => line.map((value) => `"${value.replaceAll('"', '""')}"`).join(",")).join("\r\n");
+  const link = document.createElement("a");
+  link.href = URL.createObjectURL(new Blob(["\ufeff", content], { type: "text/csv;charset=utf-8" }));
+  link.download = `板块轮动-${props.data.trade_date}.csv`;
+  link.click(); URL.revokeObjectURL(link.href);
+}
+
+function compare(left: unknown, right: unknown): number {
+  const a = Number(left); const b = Number(right);
+  if (Number.isFinite(a) && Number.isFinite(b)) return a - b;
+  return String(left ?? "").localeCompare(String(right ?? ""), "zh-CN");
+}
+function numeric(value: unknown, digits: number): string {
+  if (value === null || value === undefined || value === "") return "";
+  const number = Number(value);
+  return Number.isFinite(number) ? number.toFixed(digits) : "";
+}
+function percent(value: unknown): string { return numeric(value, 2); }
+function decimal(value: unknown): string { return numeric(value, 2); }
+function amount(value: unknown): string {
+  if (value === null || value === undefined || value === "") return "";
+  const number = Number(value);
+  return Number.isFinite(number) ? (number / 100_000_000).toFixed(2) : "";
+}
+</script>
+
+<template>
+  <header class="page-header market-page-header">
+    <div><h1>板块轮动</h1><p class="page-subtitle">最近9个交易日每日Top12热点 · 数据截至 {{ data.trade_date }}</p></div>
+    <div class="page-actions"><div class="seg-control"><button type="button" :class="{ active: order === 'oldest' }" @click="order = 'oldest'">由远到近</button><button type="button" :class="{ active: order === 'latest' }" @click="order = 'latest'">由近到远</button></div><button class="btn btn-small" type="button" @click="exportCsv">导出 CSV</button></div>
+  </header>
+  <section class="card rotation-trajectory">
+    <header class="card-header"><h2>热点轨迹</h2><span class="faint">{{ selectedSector ? `已联动高亮 ${selectedSector}` : "点击任意板块追踪其连续性" }}</span><span class="tag rotation-top-tag">每日Top12热点</span></header>
+    <div class="rotation-legend"><span><i class="heat-high"></i>强度高（90+）</span><span><i class="heat-medium"></i>强度中（70–89）</span><span><i class="heat-low"></i>强度低（70以下）</span></div>
+    <div v-if="selectedSector" class="rotation-tracker"><strong>{{ selectedSector }}</strong><span>近9日在榜 {{ appearances.length }}天 · 最高排名 {{ appearances.length ? Math.min(...appearances.map((item) => Number(item.sector?.rank ?? 99))) : "--" }}</span><button class="btn btn-small" type="button" @click="selectedSector = ''; selectedDate = ''; members = null">取消追踪</button></div>
+    <div class="rotation-days">
+      <article v-for="day in history" :key="String(day.trade_date)" class="rotation-day">
+        <header><time>{{ String(day.trade_date).slice(5) }}</time><span>{{ ((day.sectors as unknown[]) ?? []).length }}个热点</span></header>
+        <div>
+          <button v-for="sector in (day.sectors as Record<string, unknown>[]) ?? []" :key="String(sector.name)" type="button" class="rotation-sector" :class="[{ selected: selectedSector === sector.name }, Number(sector.strength) >= 90 ? 'heat-high' : Number(sector.strength) >= 70 ? 'heat-medium' : 'heat-low']" @click="selectSector(sector, day.trade_date)">
+            <span>{{ sector.rank }}</span><strong>{{ sector.name }}</strong><small>{{ sector.count }}家 · {{ Number(sector.strength).toFixed(0) }}</small>
+          </button>
+        </div>
+      </article>
+    </div>
+  </section>
+  <section class="card rotation-members">
+    <header class="card-header"><h2>{{ members?.sector_name ? `${members.sector_name}成分股` : "板块成分股" }}</h2><span class="faint">{{ members ? `${members.trade_date} · ${members.quoted_count}/${members.member_count}只` : selectedSector || "点击上方任意板块查看成分股" }}</span></header>
+    <div v-if="memberLoading" class="workspace-state">正在核验板块成分行情</div>
+    <EmptyState v-else-if="memberError" title="成分行情暂不可用" :description="memberError" />
+    <DataTable v-else-if="memberRows.length" :columns="memberColumns" :rows="memberRows" :sort-key="sortKey" :sort-direction="sortDirection" @sort="sort" />
+    <EmptyState v-else title="尚未选择板块" description="点击热点轨迹中的板块后显示目标日期的申万成分股。" />
+  </section>
+</template>
diff --git a/next/frontend/src/shared/api/market.ts b/next/frontend/src/shared/api/market.ts
index b892337..bf35c4c 100644
--- a/next/frontend/src/shared/api/market.ts
+++ b/next/frontend/src/shared/api/market.ts
@@ -67,6 +67,16 @@ export type MarketWorkspaceData = {
   items?: Record<string, unknown>[];
 };
 
+export type RotationMembersData = {
+  trade_date: string;
+  sector_name: string;
+  sector_code: string;
+  member_count: number;
+  quoted_count: number;
+  coverage: number;
+  items: Record<string, unknown>[];
+};
+
 export const marketApi = {
   summary(date?: string): Promise<MarketSummary> {
     const query = date ? `?date=${encodeURIComponent(date)}` : "";
@@ -88,4 +98,9 @@ export const marketApi = {
   syncSnapshot(date: string): Promise<{ trade_date: string; temperature: number }> {
     return api.post(`/market/snapshot-sync?date=${encodeURIComponent(date)}`);
   },
+  rotationMembers(sector: string, date: string): Promise<RotationMembersData> {
+    return api.get<RotationMembersData>(
+      `/market/rotation-members?sector=${encodeURIComponent(sector)}&date=${encodeURIComponent(date)}`,
+    );
+  },
 };
diff --git a/next/frontend/src/shared/styles/market-workspace.css b/next/frontend/src/shared/styles/market-workspace.css
index 78c36a7..d3b13c0 100644
--- a/next/frontend/src/shared/styles/market-workspace.css
+++ b/next/frontend/src/shared/styles/market-workspace.css
@@ -116,3 +116,300 @@
 .breadth-up { background: var(--color-up); }
 .breadth-flat { background: var(--color-text-faint); }
 .breadth-down { background: var(--color-down); }
+
+.page-actions {
+  display: flex;
+  align-items: center;
+  gap: var(--s-8);
+}
+
+.page-actions .seg-control {
+  margin-left: 0;
+}
+
+.ladder-layout {
+  display: grid;
+  grid-template-columns: minmax(0, 1fr) var(--s-320);
+  gap: var(--layout-gap);
+  align-items: start;
+}
+
+.ladder-board {
+  overflow: hidden;
+}
+
+.ladder-level {
+  display: grid;
+  grid-template-columns: var(--s-200) minmax(0, 1fr);
+  border-bottom: var(--s-1) solid var(--color-divider);
+}
+
+.ladder-level:last-child {
+  border-bottom: 0;
+}
+
+.ladder-level > header {
+  display: grid;
+  align-content: center;
+  gap: var(--s-6);
+  padding: var(--s-12) var(--s-14);
+  border-right: var(--s-1) solid var(--color-divider);
+  background: var(--color-primary-soft);
+}
+
+.ladder-level.is-gap > header,
+.ladder-level.is-gap .ladder-stocks {
+  background: var(--color-surface-muted);
+}
+
+.ladder-level > header div {
+  display: flex;
+  align-items: baseline;
+  justify-content: space-between;
+  gap: var(--s-8);
+}
+
+.ladder-level > header strong {
+  color: var(--color-primary);
+  font-size: var(--font-15);
+}
+
+.ladder-level > header span,
+.ladder-level > header small {
+  color: var(--color-text-secondary);
+  font-size: var(--font-11);
+}
+
+.ladder-stocks {
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(var(--s-200), 1fr));
+  gap: var(--s-8);
+  padding: var(--s-10);
+}
+
+.ladder-stock {
+  min-width: 0;
+  display: grid;
+  gap: var(--s-6);
+  padding: var(--s-9);
+  border: var(--s-1) solid var(--color-border);
+  border-radius: var(--control-radius);
+  background: var(--color-surface);
+  transition: border-color var(--duration-fast) var(--ease-standard),
+    background var(--duration-fast) var(--ease-standard),
+    transform var(--duration-fast) var(--ease-standard);
+}
+
+.ladder-stock:hover {
+  border-color: var(--color-primary-border);
+  background: var(--color-primary-soft);
+  transform: translateY(calc(var(--s-1) * -1));
+}
+
+.ladder-stock > div,
+.ladder-stock > p {
+  min-width: 0;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: var(--s-8);
+}
+
+.ladder-stock strong,
+.ladder-stock b {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.ladder-stock span,
+.ladder-stock small {
+  color: var(--color-text-secondary);
+  font-size: var(--font-11);
+}
+
+.ladder-gap-note {
+  align-self: center;
+  color: var(--color-text-faint);
+}
+
+.ladder-expand {
+  min-height: var(--s-44);
+  border: var(--s-1) dashed var(--color-border);
+  border-radius: var(--control-radius);
+  color: var(--color-primary);
+  background: var(--color-surface-muted);
+}
+
+.ladder-insights {
+  display: grid;
+  gap: var(--layout-gap);
+}
+
+.ladder-insight-body {
+  display: grid;
+  gap: var(--s-10);
+  padding: var(--s-14);
+}
+
+.ladder-insight-body > strong {
+  color: var(--color-primary);
+  font-size: var(--font-18);
+}
+
+.ladder-insight-body p {
+  color: var(--color-text-secondary);
+  font-size: var(--font-12);
+  line-height: var(--s-18);
+}
+
+.ladder-rate-list {
+  display: grid;
+  gap: var(--s-9);
+  padding: var(--s-12) var(--s-14);
+}
+
+.ladder-rate-list > div {
+  display: grid;
+  grid-template-columns: var(--s-64) minmax(0, 1fr) var(--s-44);
+  align-items: center;
+  gap: var(--s-8);
+  color: var(--color-text-secondary);
+  font-size: var(--font-11);
+}
+
+.ladder-rate-list strong {
+  text-align: right;
+  font-variant-numeric: tabular-nums;
+}
+
+.rotation-trajectory,
+.rotation-members {
+  min-width: 0;
+  overflow: hidden;
+}
+
+.rotation-top-tag {
+  margin-left: auto;
+}
+
+.rotation-legend {
+  min-height: var(--s-34);
+  display: flex;
+  align-items: center;
+  gap: var(--s-16);
+  padding: var(--s-6) var(--s-14);
+  border-bottom: var(--s-1) solid var(--color-divider);
+  color: var(--color-text-secondary);
+  font-size: var(--font-11);
+}
+
+.rotation-legend span {
+  display: inline-flex;
+  align-items: center;
+  gap: var(--s-4);
+}
+
+.rotation-legend i {
+  width: var(--s-14);
+  height: var(--s-9);
+  border-radius: var(--radius-4);
+}
+
+.rotation-tracker {
+  min-height: var(--s-46);
+  display: flex;
+  align-items: center;
+  gap: var(--s-14);
+  padding: var(--s-7) var(--s-14);
+  border-bottom: var(--s-1) solid var(--color-primary-border);
+  background: var(--color-primary-soft);
+}
+
+.rotation-tracker strong {
+  color: var(--color-primary);
+}
+
+.rotation-tracker span {
+  flex: 1;
+  color: var(--color-text-secondary);
+  font-size: var(--font-11);
+}
+
+.rotation-days {
+  display: grid;
+  grid-template-columns: repeat(9, minmax(0, 1fr));
+}
+
+.rotation-day {
+  min-width: 0;
+  border-right: var(--s-1) solid var(--color-divider);
+}
+
+.rotation-day:last-child {
+  border-right: 0;
+}
+
+.rotation-day > header {
+  display: flex;
+  align-items: baseline;
+  justify-content: space-between;
+  gap: var(--s-4);
+  padding: var(--s-8);
+  border-bottom: var(--s-1) solid var(--color-divider);
+  background: var(--color-surface-muted);
+}
+
+.rotation-day > header time {
+  font-weight: var(--weight-700);
+}
+
+.rotation-day > header span {
+  color: var(--color-text-faint);
+  font-size: var(--font-10-5);
+}
+
+.rotation-day > div {
+  display: grid;
+}
+
+.rotation-sector {
+  min-width: 0;
+  display: grid;
+  grid-template-columns: var(--s-20) minmax(0, 1fr);
+  gap: var(--s-2) var(--s-6);
+  padding: var(--s-7) var(--s-8);
+  border-bottom: var(--s-1) solid var(--color-divider);
+  text-align: left;
+  transition: opacity var(--duration-fast) var(--ease-standard);
+}
+
+.rotation-sector > span {
+  grid-row: span 2;
+  align-self: center;
+  color: var(--color-text-secondary);
+  font-variant-numeric: tabular-nums;
+}
+
+.rotation-sector strong {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  font-size: var(--font-11);
+}
+
+.rotation-sector small {
+  color: var(--color-text-secondary);
+  font-size: var(--font-10-5);
+}
+
+.rotation-sector.selected {
+  color: var(--color-primary);
+  outline: var(--s-1) solid var(--color-primary);
+  outline-offset: calc(var(--s-1) * -1);
+  opacity: 1;
+}
+
+.heat-high { background: var(--color-up-soft); }
+.heat-medium { background: var(--color-warning-soft); }
+.heat-low { background: var(--color-primary-soft); }
diff --git a/next/frontend/src/shared/styles/mobile.css b/next/frontend/src/shared/styles/mobile.css
index f966857..67511c9 100644
--- a/next/frontend/src/shared/styles/mobile.css
+++ b/next/frontend/src/shared/styles/mobile.css
@@ -197,4 +197,51 @@
   .performance-conclusion {
     position: static;
   }
+
+  .market-page-header .page-actions {
+    width: 100%;
+    align-items: stretch;
+    flex-direction: column;
+  }
+
+  .market-page-header .page-actions .seg-control {
+    width: 100%;
+  }
+
+  .market-page-header .page-actions .seg-control button {
+    flex: 1;
+  }
+
+  .ladder-layout,
+  .ladder-level {
+    grid-template-columns: minmax(0, 1fr);
+  }
+
+  .ladder-level > header {
+    border-right: 0;
+    border-bottom: var(--s-1) solid var(--color-divider);
+  }
+
+  .ladder-stocks {
+    grid-template-columns: minmax(0, 1fr);
+  }
+
+  .rotation-legend {
+    align-items: flex-start;
+    flex-direction: column;
+  }
+
+  .rotation-tracker {
+    align-items: stretch;
+    flex-direction: column;
+  }
+
+  .rotation-days {
+    grid-template-columns: minmax(0, 1fr);
+  }
+
+  .rotation-day {
+    border-right: 0;
+    border-bottom: var(--s-1) solid var(--color-divider);
+  }
 }
diff --git a/next/tests/e2e/stage7.spec.js b/next/tests/e2e/stage7.spec.js
new file mode 100644
index 0000000..ac2f708
--- /dev/null
+++ b/next/tests/e2e/stage7.spec.js
@@ -0,0 +1,78 @@
+const fs = require("node:fs");
+const path = require("node:path");
+
+const { expect, test } = require("@playwright/test");
+
+const evidence = path.resolve(__dirname, "../../docs/evidence/stage-7");
+test.beforeAll(() => fs.mkdirSync(evidence, { recursive: true }));
+
+async function authenticate(page) {
+  await page.goto("/");
+  await page.getByLabel("账号名").fill("stage7admin");
+  await page.getByLabel("密码").fill("Stage7-pass-123!");
+  await page.getByRole("button", { name: "登录", exact: true }).click();
+  await expect(page.locator(".sidebar, .field-error")).toBeVisible();
+  if (!(await page.locator(".sidebar").isVisible())) {
+    await page.getByRole("tab", { name: "注册" }).click();
+    await page.getByRole("button", { name: "注册并登录" }).click();
+  }
+}
+
+const overview = { up_count: 2800, down_count: 2100, flat_count: 100, limit_up: 58, limit_down: 5, broken: 20, seal_rate: 74.4, amount: 1500000000000 };
+const summary = { context: { requested_date: "2026-07-30", actual_date: "2026-07-29", previous_date: "2026-07-28", observed_at: "2026-07-29T15:00:00+08:00", state: "final", carried_forward: true, message: "沿用最近真实收盘快照" }, values: { ...overview, temperature: 48 } };
+
+function stock(level, index) {
+  return { identifier: `${level}${String(index).padStart(5, "0")}.SZ`, code: `${level}${String(index).padStart(5, "0")}`, name: `${level}板样本${index}`, streak: level, sector: index % 2 ? "机器人" : "元件", first_time: `09:${String(30 + index).padStart(2, "0")}`, open_times: index % 4, amount: 200000000 + index * 10000000 };
+}
+
+const ladders = [7, 5, 4, 3, 2, 1].map((level) => {
+  const count = level === 1 ? 12 : level === 2 ? 10 : 2;
+  return { level, label: level === 1 ? "首板" : `${level}板`, count, stocks: Array.from({ length: count }, (_, index) => stock(level, index + 1)) };
+});
+const performance = [1, 2, 3, 4, 5, 7].map((level) => ({ level, advance_rate: 10 + level * 5 }));
+const names = ["机器人", "元件", "半导体", "油气开采", "保险", "银行", "软件", "通信", "汽车零部件", "电力", "化工", "医药"];
+const rotation = Array.from({ length: 9 }, (_, day) => ({ trade_date: `2026-07-${String(21 + day).padStart(2, "0")}`, sectors: names.map((name, index) => ({ name, rank: index + 1, count: 8 - index % 5, strength: 96 - index * 3, leader: `${name}龙头`, representative: `${String(index + 1).padStart(6, "0")}.SZ`, trend: day % 2 ? "升温" : "持平" })) }));
+
+async function mockMarket(page) {
+  await page.route("**/api/market/summary", (route) => route.fulfill({ contentType: "application/json", body: JSON.stringify(summary) }));
+  await page.route("**/api/market/workspaces/*", (route) => {
+    const key = new URL(route.request().url()).pathname.split("/").pop();
+    const base = { trade_date: "2026-07-29", observed_at: "2026-07-29T15:00:00+08:00", carried_forward: false, message: "", overview };
+    if (key === "ladder") return route.fulfill({ contentType: "application/json", body: JSON.stringify({ ...base, items: ladders, history: performance }) });
+    if (key === "rotation") return route.fulfill({ contentType: "application/json", body: JSON.stringify({ ...base, history: rotation }) });
+    return route.fulfill({ contentType: "application/json", body: JSON.stringify({ ...base, sentiment: {}, history: [] }) });
+  });
+  await page.route("**/api/market/rotation-members*", (route) => route.fulfill({ contentType: "application/json", body: JSON.stringify({ trade_date: "2026-07-29", sector_name: "机器人", sector_code: "801072.SI", member_count: 3, quoted_count: 2, coverage: 0.667, items: [{ identifier: "000001.SZ", code: "000001", name: "成分甲", change: 4.2, open: 10, close: 10.4, amount: 500000000, quoted: true }, { identifier: "000002.SZ", code: "000002", name: "成分乙", change: -1.1, open: 8, close: 7.9, amount: 200000000, quoted: true }, { identifier: "000003.SZ", code: "000003", name: "停牌样本", change: null, open: null, close: null, amount: null, quoted: false }] }) }));
+}
+
+test("ladder and rotation preserve hierarchy, expansion and dated members", async ({ page }) => {
+  const consoleErrors = [];
+  page.on("console", (message) => { if (message.type() === "error" && !message.text().includes("401 (Unauthorized)")) consoleErrors.push(message.text()); });
+  await mockMarket(page);
+  await authenticate(page);
+
+  await page.getByRole("link", { name: /市场天梯/ }).click();
+  await expect(page.locator(".ladder-level").nth(0)).toContainText("7板");
+  await expect(page.locator(".ladder-level").nth(1)).toContainText("6板");
+  await page.getByRole("button", { name: "展开更多（4）" }).click();
+  await expect(page.getByRole("button", { name: "收起" })).toBeVisible();
+  await page.getByRole("button", { name: "收起" }).click();
+  await page.getByRole("button", { name: "按开板次数" }).click();
+  expect(await page.evaluate(() => document.documentElement.scrollHeight > window.innerHeight)).toBe(true);
+  await page.screenshot({ path: path.join(evidence, "ladder-light-1920x1080.jpg"), type: "jpeg", quality: 82 });
+
+  await page.getByRole("link", { name: /板块轮动/ }).click();
+  await expect(page.locator(".rotation-day")).toHaveCount(9);
+  await page.locator(".rotation-day").first().getByRole("button", { name: /机器人/ }).click();
+  await expect(page.getByRole("heading", { name: "机器人成分股" })).toBeVisible();
+  await expect(page.getByText("成分甲")).toBeVisible();
+  await page.getByRole("button", { name: "由近到远" }).click();
+  await page.getByRole("button", { name: "夜间" }).click();
+  expect(await page.locator(".rotation-sector.heat-high").first().evaluate((element) => getComputedStyle(element).backgroundColor)).toBe("rgb(64, 38, 42)");
+  await page.screenshot({ path: path.join(evidence, "rotation-dark-1920x1080.jpg"), type: "jpeg", quality: 82 });
+
+  await page.setViewportSize({ width: 390, height: 844 });
+  expect(await page.evaluate(() => document.documentElement.scrollWidth - window.innerWidth)).toBe(0);
+  await page.screenshot({ path: path.join(evidence, "rotation-dark-390x844.jpg"), type: "jpeg", quality: 82 });
+  expect(consoleErrors).toEqual([]);
+});
diff --git a/next/tests/test_market_data.py b/next/tests/test_market_data.py
index 9542309..821f862 100644
--- a/next/tests/test_market_data.py
+++ b/next/tests/test_market_data.py
@@ -314,6 +314,10 @@ def test_market_snapshot_units_and_yesterday_outcomes_are_deterministic() -> Non
     )
     assert snapshot["overview"]["amount"] == 500_000
     assert snapshot["broken"][0]["distance_to_limit"] == 20
+    assert snapshot["ladders"][0]["level"] == 2
+    assert snapshot["ladders"][0]["stocks"][0]["code"] == "000001"
+    assert snapshot["sector_rotation"][0]["name"] == "测试行业"
+    assert snapshot["sector_rotation"][0]["delta"] == -4
     assert [row["outcome"] for row in snapshot["yesterday_limits"]] == [
         "晋级",
         "炸板",
@@ -336,6 +340,43 @@ def test_market_snapshot_units_and_yesterday_outcomes_are_deterministic() -> Non
     }
 
 
+def test_sector_members_are_normalized_and_persistently_cached(tmp_path) -> None:
+    database = Database(tmp_path / "members.db")
+    MigrationRunner(database).upgrade(MIGRATIONS)
+    repository = MarketRepository()
+    provider = TushareProvider("test-token")
+    calls = 0
+
+    def members(*_):
+        nonlocal calls
+        calls += 1
+        return calculation_result(
+            [
+                {
+                    "sector_code": "801082.SI",
+                    "sector_name": "元件",
+                    "ts_code": "002141.SZ",
+                    "name": "贤丰控股",
+                    "change": 3.2,
+                    "open": 4.1,
+                    "close": 4.3,
+                    "amount": 123_000_000,
+                    "quoted": True,
+                }
+            ]
+        )
+
+    provider.sector_members = members
+    market = DataGateway(database, repository, (provider,), DataSourcePolicy())
+    first = market.sector_members("2026-07-29", "元件", "002141.SZ")
+    second = market.sector_members("2026-07-29", "元件", "002141.SZ")
+
+    assert calls == 1
+    assert first == second
+    assert first["items"][0]["code"] == "002141"
+    assert first["quoted_count"] == 1
+
+
 def test_sentiment_has_all_weighted_components_and_extreme_risk_cap() -> None:
     snapshot = {
         "overview": {
@@ -401,7 +442,11 @@ def test_incomplete_daily_snapshot_is_rejected_without_overwriting(tmp_path) ->
         "previous_limit_up": calculation_result([]),
         "price_limits": calculation_result([]),
     }
-    service = MarketSnapshotService(database, repository, provider)
+    service = MarketSnapshotService(
+        database,
+        repository,
+        DataGateway(database, repository, (provider,), DataSourcePolicy()),
+    )
     with pytest.raises(SnapshotSyncError, match="覆盖率"):
         service.sync("2026-07-29", datetime(2026, 7, 30, 16, tzinfo=SHANGHAI))
     with database.read() as connection:
diff --git a/next/tests/test_migrations.py b/next/tests/test_migrations.py
index f493c01..1363c57 100644
--- a/next/tests/test_migrations.py
+++ b/next/tests/test_migrations.py
@@ -110,7 +110,7 @@ def test_real_account_schema_can_upgrade_and_rollback(tmp_path) -> None:
     database = Database(tmp_path / "app.db")
     runner = MigrationRunner(database)
 
-    assert runner.upgrade(MIGRATIONS) == (1, 2, 3)
+    assert runner.upgrade(MIGRATIONS) == (1, 2, 3, 4)
     assert {
         "users",
         "memberships",
@@ -124,8 +124,9 @@ def test_real_account_schema_can_upgrade_and_rollback(tmp_path) -> None:
         "market_entities",
         "market_summaries",
         "chart_series",
+        "sector_member_snapshots",
     } <= table_names(database)
 
-    assert runner.downgrade(MIGRATIONS, target_version=0) == (3, 2, 1)
+    assert runner.downgrade(MIGRATIONS, target_version=0) == (4, 3, 2, 1)
     assert "users" not in table_names(database)
     assert "llm_models" not in table_names(database)