diff --git a/frontend/src/api/factor.ts b/frontend/src/api/factor.ts
index b5d2337..7dff52b 100644
--- a/frontend/src/api/factor.ts
+++ b/frontend/src/api/factor.ts
@@ -34,6 +34,40 @@ export function reportUrl(taskId: string, factor: string): string {
   return `/api/v1/task/${taskId}/report/${factor}?token=${encodeURIComponent(auth.token ?? '')}`
 }
 
+// —— Tears 分层序列(方案A:分析时序列化,前端 ECharts 暗色渲染) ——
+
+export interface TearsPeriodData {
+  count: number
+  ic_mean: number | null
+  ic_std: number | null
+  icir: number | null
+  t_stat: number | null
+  win_rate: number | null
+  ic_dates: string[]
+  ic_values: number[]
+  monthly_ic: MonthlyIcPoint[]
+  quantile_keys: string[]
+  nav_dates: string[]
+  quantile_nav: Record<string, number[]>
+  quantile_annual: Record<string, number>
+  ls_nav: number[]
+  ls_annual: number
+  ls_max_dd: number
+}
+
+export interface TearsData {
+  factor: string
+  generated_at?: string
+  factor_autocorr: number | null
+  periods: Record<string, TearsPeriodData>
+}
+
+export async function getTearsData(taskId: string, factor: string): Promise<TearsData> {
+  const { data } = await apiClient.get<TearsData>(`/task/${taskId}/tears/${factor}`)
+  return data
+}
+
+
 // —— Factor Evaluation API ——
 
 export interface EvalRun {
diff --git a/frontend/src/router/index.ts b/frontend/src/router/index.ts
index bfa8fe1..d5d9cb8 100644
--- a/frontend/src/router/index.ts
+++ b/frontend/src/router/index.ts
@@ -24,6 +24,7 @@ const routes: RouteRecordRaw[] = [
       { path: 'backtest/history', name: 'bt-history', component: () => import('@/views/backtest/History.vue') },
       { path: 'factor/leaderboard', name: 'fc-leaderboard', component: () => import('@/views/factor/Leaderboard.vue') },
       { path: 'factor/leaderboard/:factor', name: 'fc-leaderboard-detail', component: () => import('@/views/factor/LeaderboardDetail.vue') },
+      { path: 'factor/compare', name: 'fc-compare', component: () => import('@/views/factor/Compare.vue') },
       { path: 'factor/batch', name: 'fc-batch', component: () => import('@/views/factor/BatchEval.vue') },
       { path: 'factor/new', name: 'fc-new', component: () => import('@/views/factor/New.vue') },
       { path: 'factor/progress/:id', name: 'fc-progress', component: () => import('@/views/backtest/Progress.vue') },
diff --git a/frontend/src/stores/factorCompare.ts b/frontend/src/stores/factorCompare.ts
new file mode 100644
index 0000000..0ac6d86
--- /dev/null
+++ b/frontend/src/stores/factorCompare.ts
@@ -0,0 +1,69 @@
+// 因子对比托盘(设计稿②):排行榜行内/详情页加入,2~6 个起对比,localStorage 持久化防刷新丢
+import { defineStore } from 'pinia'
+
+const LS_KEY = 'factorCompare.v1'
+const MAX = 6
+
+// 线色板(设计稿 FCOL 同款):按加入顺序分配,托盘 chips 与对比页各图共用
+const PALETTE = ['#00e5ff', '#b48cff', '#ffb000', '#5f8fd9', '#d98fd9', '#2ee68a']
+
+function loadPersisted(): { factors: string[]; runId: string } {
+  try {
+    const raw = localStorage.getItem(LS_KEY)
+    if (!raw) return { factors: [], runId: '' }
+    const parsed = JSON.parse(raw) as { factors?: unknown; runId?: unknown }
+    const factors = Array.isArray(parsed.factors)
+      ? parsed.factors.filter((f): f is string => typeof f === 'string').slice(0, MAX)
+      : []
+    return { factors, runId: typeof parsed.runId === 'string' ? parsed.runId : '' }
+  } catch {
+    return { factors: [], runId: '' }
+  }
+}
+
+interface FactorCompareState {
+  factors: string[]
+  runId: string
+}
+
+export const useFactorCompareStore = defineStore('factorCompare', {
+  state: (): FactorCompareState => loadPersisted(),
+  getters: {
+    count: (state): number => state.factors.length,
+    canCompare: (state): boolean => state.factors.length >= 2,
+    isFull: (state): boolean => state.factors.length >= MAX,
+  },
+  actions: {
+    isSelected(factor: string): boolean {
+      return this.factors.includes(factor)
+    },
+    /** 加入/移除;满了返回 false(调用方提示) */
+    toggle(factor: string, runId?: string): boolean {
+      if (this.factors.includes(factor)) {
+        this.factors = this.factors.filter((f) => f !== factor)
+      } else {
+        if (this.factors.length >= MAX) return false
+        this.factors = [...this.factors, factor]
+        if (runId) this.runId = runId
+      }
+      this.persist()
+      return true
+    },
+    remove(factor: string): void {
+      this.factors = this.factors.filter((f) => f !== factor)
+      this.persist()
+    },
+    clear(): void {
+      this.factors = []
+      this.runId = ''
+      this.persist()
+    },
+    colorOf(factor: string): string {
+      const i = this.factors.indexOf(factor)
+      return i >= 0 ? PALETTE[i % PALETTE.length] : PALETTE[0]
+    },
+    persist(): void {
+      localStorage.setItem(LS_KEY, JSON.stringify({ factors: this.factors, runId: this.runId }))
+    },
+  },
+})
diff --git a/frontend/src/views/Layout.vue b/frontend/src/views/Layout.vue
index d616761..55e9cea 100644
--- a/frontend/src/views/Layout.vue
+++ b/frontend/src/views/Layout.vue
@@ -2,6 +2,7 @@
 import { ref, computed, onMounted, onUnmounted } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
 import { useAuthStore } from '@/stores/auth'
+import CompareTray from '@/views/factor/CompareTray.vue'
 
 const router = useRouter()
 const route = useRoute()
@@ -234,6 +235,9 @@ function onLogout(): void {
       </el-main>
     </el-container>
 
+    <!-- 因子对比托盘(设计稿②):全局底部,加入≥2 个因子后浮现 -->
+    <CompareTray />
+
     <!-- Cmd+K 命令面板 -->
     <div v-if="cmdOpen" class="cmd-overlay" @click.self="closeCmd">
       <div class="cmd-box term-corners">
diff --git a/frontend/src/views/factor/Compare.vue b/frontend/src/views/factor/Compare.vue
new file mode 100644
index 0000000..09cee3b
--- /dev/null
+++ b/frontend/src/views/factor/Compare.vue
@@ -0,0 +1,668 @@
+<script setup lang="ts">
+// 因子对比页(设计稿②,用户 2026-08-29 拍板做实):纯前端——现有 eval/detail ×N,
+// 相关性=月度 IC 序列 Pearson 前端算,零后端改动。
+// 视觉蓝本 docs/factor_research/factor-tears-compare-mockup.html tab②。
+import { ref, computed, onMounted, watch, nextTick } from 'vue'
+import { getEvalDetail, type MonthlyIcPoint } from '@/api/factor'
+import { useFactorCompareStore } from '@/stores/factorCompare'
+import { useChart } from '@/composables/useChart'
+import { darkTooltip, darkAxis, UP, DOWN, TEXT_DIM } from '@/utils/echartsDark'
+
+interface PeriodMetrics {
+  count?: number
+  ic_mean: number | null
+  ic_std: number | null
+  icir: number | null
+  t_stat: number | null
+  win_rate: number | null
+  monthly_ic: MonthlyIcPoint[] | null
+  ls_annual: number | null
+  deciles: (number | null)[] | null
+  conclusion?: string
+}
+
+interface FactorMetrics {
+  factor: string
+  category: string
+  turnover: number | null
+  periods: Record<string, PeriodMetrics>
+}
+
+const store = useFactorCompareStore()
+const period = ref<'1' | '5' | '10'>('5')
+
+const loading = ref(false)
+const loadErr = ref('')
+const factors = ref<FactorMetrics[]>([])
+const failed = ref<string[]>([])
+
+const overlayEl = ref<HTMLDivElement>()
+const overlay = useChart(overlayEl)
+
+function mOf(f: FactorMetrics): PeriodMetrics | null {
+  return f.periods?.[period.value] ?? null
+}
+
+function pct(v: number | null | undefined, digits = 1): string {
+  return typeof v === 'number' ? `${v >= 0 ? '+' : ''}${(v * 100).toFixed(digits)}%` : '—'
+}
+function num(v: number | null | undefined, digits = 3): string {
+  return typeof v === 'number' ? v.toFixed(digits) : '—'
+}
+function sgnCls(v: number | null | undefined): string {
+  if (typeof v !== 'number' || v === 0) return ''
+  return v > 0 ? 'up' : 'down'
+}
+
+const CONCLUSION: Record<string, { label: string; color: string }> = {
+  effective: { label: '有效', color: 'var(--lamp-ok)' },
+  watch: { label: '观察', color: 'var(--lamp-warn)' },
+  eliminated: { label: '淘汰', color: 'var(--lamp-idle)' },
+}
+
+async function load() {
+  if (!store.canCompare) return
+  loading.value = true
+  loadErr.value = ''
+  failed.value = []
+  try {
+    const results = await Promise.all(
+      store.factors.map(async (name) => {
+        try {
+          const d = await getEvalDetail(name, store.runId || undefined)
+          const metrics = d.metrics as Record<string, unknown>
+          const periods: Record<string, PeriodMetrics> = {}
+          for (const p of ['1', '5', '10']) {
+            const m = metrics[p] as PeriodMetrics | undefined
+            if (m) periods[p] = m
+          }
+          const fm: FactorMetrics = {
+            factor: d.factor,
+            category: d.category,
+            turnover: typeof metrics.turnover === 'number' ? metrics.turnover : null,
+            periods,
+          }
+          return fm
+        } catch {
+          failed.value = [...failed.value, name]
+          return null
+        }
+      })
+    )
+    factors.value = results.filter((f): f is FactorMetrics => f !== null)
+    await nextTick()
+    renderAll()
+  } catch {
+    loadErr.value = '对比数据加载失败'
+  } finally {
+    loading.value = false
+  }
+}
+
+// —— 指标并排表(行最优青色高亮;换手=min 最优,其余=max;t 值按 |t|) ——
+
+interface MetricRow {
+  k: string
+  get: (f: FactorMetrics) => number | null
+  fmt: (v: number | null) => string
+  cls: (v: number | null) => string
+  best: 'max' | 'min' | 'none'
+}
+
+const metricRows: MetricRow[] = [
+  { k: 'IC 均值', get: (f) => mOf(f)?.ic_mean ?? null, fmt: (v) => num(v), cls: sgnCls, best: 'max' },
+  { k: 'ICIR', get: (f) => mOf(f)?.icir ?? null, fmt: (v) => num(v, 2), cls: sgnCls, best: 'max' },
+  { k: 't 值', get: (f) => Math.abs(mOf(f)?.t_stat ?? 0) || null, fmt: (v) => num(v, 1), cls: () => '', best: 'max' },
+  { k: 'IC 胜率', get: (f) => mOf(f)?.win_rate ?? null, fmt: (v) => pct(v), cls: () => '', best: 'max' },
+  { k: '多空年化', get: (f) => mOf(f)?.ls_annual ?? null, fmt: (v) => pct(v), cls: sgnCls, best: 'max' },
+  { k: '日均换手', get: (f) => f.turnover, fmt: (v) => pct(v), cls: () => '', best: 'min' },
+]
+
+function bestIdx(row: MetricRow): number {
+  if (row.best === 'none' || !factors.value.length) return -1
+  let bi = -1
+  let bv: number | null = null
+  factors.value.forEach((f, i) => {
+    const v = row.get(f)
+    if (v == null) return
+    if (bv == null || (row.best === 'min' ? v < bv : v > bv)) { bv = v; bi = i }
+  })
+  return bi
+}
+
+/** t 值行展示原始值(含符号),排序键是 |t|(metricRows.get 已取 abs) */
+function tStatDisplay(f: FactorMetrics): number | null {
+  return mOf(f)?.t_stat ?? null
+}
+
+// —— 月度 IC Pearson(公共月份对齐) ——
+
+function pearsonAligned(a: MonthlyIcPoint[], b: MonthlyIcPoint[]): number | null {
+  const mb = new Map(b.map((p) => [p.month, p.ic]))
+  const xs: number[] = []
+  const ys: number[] = []
+  for (const p of a) {
+    const y = mb.get(p.month)
+    if (typeof y === 'number') { xs.push(p.ic); ys.push(y) }
+  }
+  const n = xs.length
+  if (n < 3) return null
+  let sx = 0
+  let sy = 0
+  for (let i = 0; i < n; i++) { sx += xs[i]; sy += ys[i] }
+  const mx = sx / n
+  const my = sy / n
+  let cov = 0
+  let vx = 0
+  let vy = 0
+  for (let i = 0; i < n; i++) {
+    const dx = xs[i] - mx
+    const dy = ys[i] - my
+    cov += dx * dy
+    vx += dx * dx
+    vy += dy * dy
+  }
+  if (vx <= 0 || vy <= 0) return null
+  return cov / Math.sqrt(vx * vy)
+}
+
+const corrMatrix = computed<(number | null)[][]>(() =>
+  factors.value.map((a) =>
+    factors.value.map((b) => {
+      if (a.factor === b.factor) return 1
+      const ma = mOf(a)?.monthly_ic
+      const mb = mOf(b)?.monthly_ic
+      if (!ma?.length || !mb?.length) return null
+      return pearsonAligned(ma, mb)
+    })
+  )
+)
+
+function corrCellStyle(v: number | null): Record<string, string> {
+  if (v == null) return { background: 'var(--panel)', color: 'var(--text-3)' }
+  const a = Math.min(1, Math.abs(v))
+  return {
+    background: `rgba(0,229,255,${(0.04 + a * 0.4).toFixed(2)})`,
+    color: a > 0.75 ? '#05080d' : 'var(--text-2)',
+  }
+}
+
+// —— 累计 IC 叠加 ——
+
+function renderOverlay(): void {
+  const fs = factors.value
+  if (!fs.length) return
+  // 月份并集排序(各因子月度覆盖可能有差),缺失月份断点 null
+  const monthSet = new Set<string>()
+  fs.forEach((f) => (mOf(f)?.monthly_ic ?? []).forEach((p) => monthSet.add(p.month)))
+  const months = [...monthSet].sort()
+  const cumSeries = fs.map((f) => {
+    const mi = mOf(f)?.monthly_ic ?? []
+    const byMonth = new Map(mi.map((p) => [p.month, p.ic]))
+    let c = 0
+    const vals = months.map((m) => {
+      const v = byMonth.get(m)
+      if (typeof v !== 'number') return null
+      c += v
+      return Math.round(c * 1e4) / 1e4
+    })
+    return { name: f.factor, vals }
+  })
+  overlay.setOption({
+    tooltip: { ...darkTooltip(), valueFormatter: (v: number) => (typeof v === 'number' ? v.toFixed(2) : '—') },
+    legend: { top: 4, right: 8, textStyle: { color: TEXT_DIM, fontSize: 11 }, itemWidth: 14, itemHeight: 9 },
+    grid: { left: 48, right: 24, top: 34, bottom: 30 },
+    xAxis: { type: 'category', data: months, ...darkAxis() },
+    yAxis: { type: 'value', ...darkAxis() },
+    series: cumSeries.map((s) => ({
+      name: s.name,
+      type: 'line',
+      data: s.vals,
+      symbol: 'none',
+      connectNulls: false,
+      lineStyle: { color: store.colorOf(s.name), width: 1.8 },
+      itemStyle: { color: store.colorOf(s.name) },
+      emphasis: { focus: 'series' },
+    })),
+  })
+}
+
+// —— 十分组小倍数(SVG,同设计稿 mini 卡) ——
+
+function decilesSvg(vals: (number | null)[]): string {
+  const W = 300
+  const H = 128
+  const pl = 8
+  const pr = 8
+  const pt = 16
+  const pb = 16
+  const ok = vals.filter((v): v is number => v != null)
+  const mx = Math.max(0.02, ...ok.map(Math.abs)) * 1.18
+  const midY = pt + (H - pt - pb) / 2
+  const half = (H - pt - pb) / 2
+  const span = W - pl - pr
+  let s = `<svg viewBox="0 0 ${W} ${H}" style="width:100%;height:auto" role="img">`
+  s += `<line x1="${pl}" x2="${W - pr}" y1="${midY}" y2="${midY}" stroke="var(--border)"/>`
+  vals.forEach((v, i) => {
+    const cx = pl + (i + 0.5) * span / 10
+    const bw = span / 10 * 0.55
+    if (v != null) {
+      const y = midY - (v / mx) * half
+      s += `<rect x="${(cx - bw / 2).toFixed(1)}" y="${Math.min(y, midY).toFixed(1)}" width="${bw.toFixed(1)}" height="${Math.abs(y - midY).toFixed(1)}" fill="${v >= 0 ? UP : DOWN}"/>`
+      s += `<text x="${cx}" y="${v >= 0 ? y - 3 : y + 10}" fill="${v >= 0 ? UP : DOWN}" font-size="8" text-anchor="middle">${(v >= 0 ? '+' : '') + (v * 100).toFixed(1)}%</text>`
+    }
+    s += `<text x="${cx}" y="${H - 4}" fill="var(--text-3)" font-size="8" text-anchor="middle">D${i + 1}</text>`
+  })
+  return s + '</svg>'
+}
+
+const minis = computed(() =>
+  factors.value.map((f) => ({
+    factor: f.factor,
+    color: store.colorOf(f.factor),
+    icir: mOf(f)?.icir ?? null,
+    svg: decilesSvg(mOf(f)?.deciles ?? []),
+  }))
+)
+
+function renderAll(): void {
+  renderOverlay()
+}
+
+watch(period, async () => { await nextTick(); renderAll() })
+
+onMounted(load)
+</script>
+
+<template>
+  <div class="compare-page">
+    <div class="page-head">
+      <div>
+        <h1 class="page-title">因子对比</h1>
+        <p class="page-sub">
+          {{ factors.length }} 因子 · {{ period }}D 口径 · {{ store.runId || '最新批次' }}
+          <span v-if="failed.length" class="fail-note">· {{ failed.length }} 个加载失败已略过</span>
+        </p>
+      </div>
+      <div class="head-right">
+        <div class="seg">
+          <button :class="{ on: period === '1' }" @click="period = '1'">1D</button>
+          <button :class="{ on: period === '5' }" @click="period = '5'">5D</button>
+          <button :class="{ on: period === '10' }" @click="period = '10'">10D</button>
+        </div>
+        <router-link to="/factor/leaderboard" class="btn">返回排行榜</router-link>
+      </div>
+    </div>
+
+    <div v-if="!store.canCompare" class="empty-state">
+      <p>对比至少需要 2 个因子——去排行榜行内「＋对比」添加</p>
+      <router-link to="/factor/leaderboard">前往排行榜</router-link>
+    </div>
+
+    <template v-else>
+      <!-- 因子 chips -->
+      <div class="chip-row">
+        <span
+          v-for="f in factors"
+          :key="f.factor"
+          class="tchip mono"
+          :style="{ borderColor: store.colorOf(f.factor) + '66' }"
+        >
+          <span :style="{ color: store.colorOf(f.factor) }">●</span>{{ f.factor }}
+          <span class="cat">{{ f.category }}</span>
+        </span>
+        <span class="hint-inline">在排行榜行内 ＋ 或详情页「加入对比」增删</span>
+      </div>
+
+      <div v-loading="loading">
+        <div v-if="loadErr" class="empty-state"><p>{{ loadErr }}</p></div>
+
+        <template v-else-if="factors.length">
+          <!-- 指标并排 -->
+          <div class="chart-card main-card">
+            <h3>指标并排<span class="h3-tag">行最优青色高亮</span></h3>
+            <div class="tblwrap">
+              <table class="cmp-tbl">
+                <thead>
+                  <tr>
+                    <th class="rk">指标（{{ period }}D）</th>
+                    <th v-for="f in factors" :key="f.factor" class="mcol" :style="{ color: store.colorOf(f.factor) }">
+                      {{ f.factor }}
+                    </th>
+                  </tr>
+                </thead>
+                <tbody>
+                  <tr>
+                    <td class="rk">结论</td>
+                    <td v-for="f in factors" :key="f.factor">
+                      <span class="st"><span class="lamp" :style="{ background: CONCLUSION[mOf(f)?.conclusion ?? 'eliminated']?.color }"></span>{{ CONCLUSION[mOf(f)?.conclusion ?? 'eliminated']?.label ?? '—' }}</span>
+                    </td>
+                  </tr>
+                  <tr v-for="row in metricRows" :key="row.k">
+                    <td class="rk">{{ row.k }}<template v-if="row.k === 't 值' || row.k === '日均换手'"><span class="rk-sub">{{ row.k === 't 值' ? '按|t|最优' : '越低越好' }}</span></template></td>
+                    <td
+                      v-for="(f, i) in factors"
+                      :key="f.factor"
+                      :class="{ best: i === bestIdx(row) }"
+                    >
+                      <span
+                        v-if="row.k === 't 值'"
+                        class="mono val"
+                        :class="sgnCls(tStatDisplay(f))"
+                      >{{ num(tStatDisplay(f), 1) }}</span>
+                      <span v-else class="mono val" :class="row.cls(row.get(f))">{{ row.fmt(row.get(f)) }}</span>
+                    </td>
+                  </tr>
+                </tbody>
+              </table>
+            </div>
+          </div>
+
+          <div class="grid2">
+            <div class="chart-card">
+              <h3>累计 IC 叠加</h3>
+              <div class="cs">各因子累计 RankIC 曲线 · 斜率=预测力</div>
+              <div ref="overlayEl" class="cbody" />
+            </div>
+            <div class="chart-card">
+              <h3>IC 序列相关性<span class="h3-tag">月度 IC Pearson</span></h3>
+              <div class="cs">高相关=同质因子,为去重铺路</div>
+              <div class="cmx" :style="{ gridTemplateColumns: `72px repeat(${factors.length}, 1fr)` }">
+                <div></div>
+                <div v-for="f in factors" :key="'h-' + f.factor" class="cl mono" :style="{ color: store.colorOf(f.factor) }">{{ f.factor }}</div>
+                <template v-for="(rowF, i) in factors" :key="'r-' + rowF.factor">
+                  <div class="cl mono" :style="{ color: store.colorOf(rowF.factor) }">{{ rowF.factor }}</div>
+                  <div
+                    v-for="(c, j) in corrMatrix[i]"
+                    :key="j"
+                    class="cc mono"
+                    :style="corrCellStyle(i === j ? 1 : c)"
+                  >{{ i === j ? '—' : c == null ? '·' : c.toFixed(2) }}</div>
+                </template>
+              </div>
+            </div>
+          </div>
+
+          <!-- 十分组小倍数 -->
+          <div class="minis-grid">
+            <div v-for="m in minis" :key="m.factor" class="chart-card mini">
+              <h3 class="mono" :style="{ color: m.color }">{{ m.factor }}<span class="h3c">{{ period }}D · ICIR {{ num(m.icir, 2) }}</span></h3>
+              <div v-html="m.svg"></div>
+            </div>
+          </div>
+
+          <div class="foot-note">
+            口径:日频 RankIC · 批次 {{ store.runId || 'latest' }} · 相关性=月度 IC 公共月份 Pearson · 换手为全周期口径
+          </div>
+        </template>
+      </div>
+    </template>
+  </div>
+</template>
+
+<style scoped>
+.compare-page {
+  padding: 22px 24px 80px;
+  min-width: 0;
+}
+
+.page-head {
+  display: flex;
+  align-items: flex-end;
+  justify-content: space-between;
+  gap: 16px;
+  margin-bottom: var(--sp-4);
+  flex-wrap: wrap;
+}
+
+.page-title {
+  font-size: 18px;
+  font-weight: 700;
+  letter-spacing: 0.04em;
+  color: var(--text);
+}
+
+.page-sub {
+  color: var(--text-2);
+  font-size: 12px;
+  margin-top: 2px;
+  font-family: var(--mono);
+  letter-spacing: 0.02em;
+}
+
+.fail-note { color: var(--amber); }
+
+.head-right {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+}
+
+.seg {
+  display: flex;
+  border: 1px solid var(--border);
+  border-radius: var(--r-sm);
+  overflow: hidden;
+}
+
+.seg button {
+  font-family: var(--mono);
+  font-size: 11px;
+  padding: 4px 12px;
+  color: var(--text-2);
+  background: transparent;
+  border: none;
+  cursor: pointer;
+}
+
+.seg button.on {
+  background: rgba(0, 229, 255, 0.12);
+  color: var(--brand);
+}
+
+.btn {
+  font-size: 12.5px;
+  font-weight: 600;
+  border-radius: var(--r-md);
+  padding: 7px 16px;
+  border: 1px solid var(--border);
+  color: var(--text-2);
+  background: var(--bg-card);
+  transition: all 0.15s var(--ease);
+  cursor: pointer;
+  text-decoration: none;
+  display: inline-block;
+}
+
+.btn:hover { color: var(--text); border-color: var(--text-3); }
+
+.empty-state {
+  padding: 60px;
+  text-align: center;
+  color: var(--text-3);
+  background: var(--bg-card);
+  border: 1px solid var(--border);
+  border-radius: var(--r-lg);
+}
+
+.empty-state a {
+  color: var(--brand);
+  text-decoration: none;
+}
+
+.chip-row {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  flex-wrap: wrap;
+  margin-bottom: var(--sp-3);
+}
+
+.tchip {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  font-size: 11.5px;
+  color: var(--text);
+  border: 1px solid var(--border);
+  border-radius: var(--r-sm);
+  padding: 3px 10px;
+}
+
+.tchip .cat {
+  font-size: 10px;
+  color: var(--text-3);
+}
+
+.hint-inline { font-size: 10.5px; color: var(--text-3); }
+
+.chart-card {
+  background: var(--bg-card);
+  border: 1px solid var(--border-2);
+  border-radius: var(--r-md);
+  padding: 12px 14px;
+}
+
+.chart-card h3 {
+  margin: 0;
+  font-size: 12.5px;
+  font-weight: 600;
+  letter-spacing: 0.04em;
+  color: var(--text);
+}
+
+.h3-tag {
+  font-size: 10px;
+  color: var(--text-3);
+  margin-left: 8px;
+  font-weight: 400;
+}
+
+.cs { font-size: 11px; color: var(--text-3); margin: 4px 0 8px; }
+.cbody { width: 100%; height: 250px; }
+
+.main-card { margin-bottom: var(--sp-3); }
+
+.tblwrap { overflow-x: auto; margin-top: 8px; }
+
+.cmp-tbl { border-collapse: collapse; width: 100%; }
+
+.cmp-tbl th {
+  text-align: right;
+  font-family: var(--mono);
+  font-size: 10.5px;
+  font-weight: 600;
+  letter-spacing: 0.06em;
+  color: var(--text-2);
+  border-bottom: 1px solid var(--border);
+  padding: 6px 12px;
+  white-space: nowrap;
+}
+
+.cmp-tbl td {
+  text-align: right;
+  padding: 7px 12px;
+  border-bottom: 1px solid var(--border-2);
+  font-size: 12.5px;
+  white-space: nowrap;
+}
+
+.cmp-tbl tbody tr:last-child td { border-bottom: none; }
+
+.cmp-tbl .rk {
+  text-align: left !important;
+  color: var(--text-3);
+  font-size: 11.5px;
+}
+
+.rk-sub {
+  display: block;
+  font-size: 9.5px;
+  color: var(--text-3);
+  opacity: 0.8;
+}
+
+.cmp-tbl .best {
+  background: var(--cyan-soft);
+  box-shadow: inset 0 0 0 1px rgba(0, 229, 255, 0.35);
+}
+
+.val.up { color: var(--up); }
+.val.down { color: var(--down); }
+
+.st {
+  display: inline-flex;
+  align-items: center;
+  gap: 5px;
+  font-family: var(--mono);
+  font-size: 10.5px;
+}
+
+.lamp {
+  width: 7px;
+  height: 7px;
+  border-radius: 50%;
+  display: inline-block;
+  flex-shrink: 0;
+}
+
+.grid2 {
+  display: grid;
+  grid-template-columns: repeat(2, 1fr);
+  gap: 12px;
+  margin-bottom: var(--sp-3);
+}
+
+/* 相关性矩阵(青色 alpha 格,同设计稿) */
+.cmx {
+  display: grid;
+  gap: 3px;
+  margin-top: 8px;
+}
+
+.cmx .cl {
+  font-size: 10.5px;
+  color: var(--text-2);
+  display: flex;
+  align-items: center;
+  justify-content: flex-end;
+  padding-right: 8px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.cmx .cc {
+  height: 34px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 11.5px;
+  border-radius: 2px;
+}
+
+.minis-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
+  gap: 12px;
+  margin-bottom: var(--sp-3);
+}
+
+.mini .h3c {
+  font-size: 10px;
+  margin-left: 8px;
+  color: var(--text-3);
+  font-weight: 400;
+}
+
+.foot-note {
+  color: var(--text-3);
+  font-family: var(--mono);
+  font-size: 10.5px;
+  letter-spacing: 0.04em;
+}
+
+@media (max-width: 1100px) {
+  .grid2 { grid-template-columns: 1fr; }
+}
+</style>
diff --git a/frontend/src/views/factor/CompareTray.vue b/frontend/src/views/factor/CompareTray.vue
new file mode 100644
index 0000000..b6d5cc7
--- /dev/null
+++ b/frontend/src/views/factor/CompareTray.vue
@@ -0,0 +1,154 @@
+<script setup lang="ts">
+// 对比托盘(设计稿②):排行榜/详情页加入的因子沉在这里,2~6 个可发起对比。
+// 挂 Layout 底部,对比页自身不显示(页面内已有 chips)。
+import { computed } from 'vue'
+import { useRoute, useRouter } from 'vue-router'
+import { useFactorCompareStore } from '@/stores/factorCompare'
+
+const store = useFactorCompareStore()
+const route = useRoute()
+const router = useRouter()
+
+const visible = computed(() => store.count > 0 && route.name !== 'fc-compare')
+
+function goCompare(): void {
+  router.push('/factor/compare')
+}
+</script>
+
+<template>
+  <Transition name="tray">
+    <div v-if="visible" class="compare-tray">
+      <span class="tray-label mono">对比托盘</span>
+      <div class="chips">
+        <span
+          v-for="f in store.factors"
+          :key="f"
+          class="tchip mono"
+          :style="{ borderColor: store.colorOf(f) + '66' }"
+        >
+          <span :style="{ color: store.colorOf(f) }">●</span>{{ f }}
+          <span class="x" title="移除" @click="store.remove(f)">✕</span>
+        </span>
+        <span class="hint-inline">{{ store.count }} / 6 · 至少 2 个</span>
+      </div>
+      <button class="go-btn" :disabled="!store.canCompare" @click="goCompare">
+        对比 {{ store.count }} 因子 →
+      </button>
+      <button class="clear-btn" title="清空" @click="store.clear()">清空</button>
+    </div>
+  </Transition>
+</template>
+
+<style scoped>
+.compare-tray {
+  position: fixed;
+  left: 50%;
+  transform: translateX(-50%);
+  bottom: 18px;
+  z-index: 60;
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  max-width: calc(100vw - 48px);
+  background: var(--bg-overlay);
+  border: 1px solid rgba(0, 229, 255, 0.28);
+  border-radius: var(--r-lg);
+  box-shadow: var(--shadow), var(--glow-cyan);
+  padding: 9px 12px 9px 14px;
+}
+
+.tray-label {
+  font-size: 10px;
+  letter-spacing: 0.14em;
+  color: var(--text-3);
+  text-transform: uppercase;
+  white-space: nowrap;
+}
+
+.chips {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  overflow-x: auto;
+}
+
+.tchip {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  font-size: 11.5px;
+  color: var(--text);
+  border: 1px solid var(--border);
+  border-radius: var(--r-sm);
+  padding: 2px 8px;
+  white-space: nowrap;
+}
+
+.tchip .x {
+  cursor: pointer;
+  color: var(--text-3);
+  font-size: 10px;
+  padding: 0 1px;
+}
+
+.tchip .x:hover {
+  color: var(--danger);
+}
+
+.hint-inline {
+  font-size: 10.5px;
+  color: var(--text-3);
+  white-space: nowrap;
+}
+
+.go-btn {
+  font-family: var(--mono);
+  font-size: 12px;
+  font-weight: 600;
+  color: var(--brand);
+  background: var(--cyan-soft);
+  border: 1px solid rgba(0, 229, 255, 0.35);
+  border-radius: var(--r-sm);
+  padding: 5px 14px;
+  cursor: pointer;
+  white-space: nowrap;
+  transition: all 0.15s var(--ease);
+}
+
+.go-btn:hover:not(:disabled) {
+  background: rgba(0, 229, 255, 0.2);
+}
+
+.go-btn:disabled {
+  opacity: 0.45;
+  cursor: not-allowed;
+}
+
+.clear-btn {
+  font-size: 11px;
+  color: var(--text-3);
+  background: transparent;
+  border: 1px solid var(--border);
+  border-radius: var(--r-sm);
+  padding: 4px 10px;
+  cursor: pointer;
+  white-space: nowrap;
+}
+
+.clear-btn:hover {
+  color: var(--text-2);
+  border-color: var(--text-3);
+}
+
+.tray-enter-active,
+.tray-leave-active {
+  transition: all 0.2s var(--ease);
+}
+
+.tray-enter-from,
+.tray-leave-to {
+  opacity: 0;
+  transform: translateX(-50%) translateY(12px);
+}
+</style>
diff --git a/frontend/src/views/factor/Leaderboard.vue b/frontend/src/views/factor/Leaderboard.vue
index 6793424..7313f05 100644
--- a/frontend/src/views/factor/Leaderboard.vue
+++ b/frontend/src/views/factor/Leaderboard.vue
@@ -1,9 +1,12 @@
 <script setup lang="ts">
 import { ref, onMounted, computed } from 'vue'
 import { useRouter } from 'vue-router'
+import { ElMessage } from 'element-plus'
 import { getEvalRuns, getLeaderboard, type EvalRun, type LeaderboardRow, type LeaderboardTiles } from '@/api/factor'
+import { useFactorCompareStore } from '@/stores/factorCompare'
 
 const router = useRouter()
+const compareStore = useFactorCompareStore()
 const runs = ref<EvalRun[]>([])
 const runId = ref<string>('')
 const period = ref<'1' | '5' | '10'>('1')
@@ -74,6 +77,11 @@ function goToDetail(row: LeaderboardRow) {
   router.push(`/factor/leaderboard/${row.factor}?run=${runId.value}`)
 }
 
+function toggleCompare(row: LeaderboardRow) {
+  const ok = compareStore.toggle(row.factor, runId.value || undefined)
+  if (!ok) ElMessage.warning('对比托盘已满(6 个),先移除再添加')
+}
+
 function getCategoryClass(cat: string): string {
   const map: Record<string, string> = {
     alpha101: 'cat-alpha101',
@@ -167,6 +175,7 @@ onMounted(async () => {
               <th>换手/日</th>
               <th>IC 趋势</th>
               <th>结论</th>
+              <th class="l">对比</th>
             </tr>
           </thead>
           <tbody>
@@ -207,6 +216,17 @@ onMounted(async () => {
                   <span class="lamp"></span>{{ CONCLUSION[row.conclusion]?.label || row.conclusion }}
                 </span>
               </td>
+              <td class="l">
+                <button
+                  class="addbtn"
+                  :class="{ on: compareStore.isSelected(row.factor) }"
+                  :disabled="!!row.error"
+                  :title="compareStore.isSelected(row.factor) ? '移出对比' : '加入对比'"
+                  @click.stop="toggleCompare(row)"
+                >
+                  {{ compareStore.isSelected(row.factor) ? '✓ 已选' : '＋对比' }}
+                </button>
+              </td>
             </tr>
           </tbody>
         </table>
@@ -480,7 +500,7 @@ onMounted(async () => {
 table {
   width: 100%;
   border-collapse: collapse;
-  min-width: 980px;
+  min-width: 1050px;
 }
 
 thead th {
@@ -685,4 +705,34 @@ tr.top3 td.rank {
 .sparkline {
   display: block;
 }
+
+.addbtn {
+  font-family: var(--mono);
+  font-size: 10.5px;
+  font-weight: 600;
+  letter-spacing: 0.3px;
+  color: var(--text-2);
+  background: transparent;
+  border: 1px solid var(--border);
+  border-radius: var(--r-sm);
+  padding: 2px 9px;
+  cursor: pointer;
+  transition: all 0.15s var(--ease);
+}
+
+.addbtn:hover:not(:disabled) {
+  color: var(--brand);
+  border-color: rgba(0, 229, 255, 0.4);
+}
+
+.addbtn.on {
+  color: var(--brand);
+  background: rgba(0, 229, 255, 0.1);
+  border-color: rgba(0, 229, 255, 0.35);
+}
+
+.addbtn:disabled {
+  opacity: 0.35;
+  cursor: not-allowed;
+}
 </style>
diff --git a/frontend/src/views/factor/LeaderboardDetail.vue b/frontend/src/views/factor/LeaderboardDetail.vue
index 6a02b78..86bf737 100644
--- a/frontend/src/views/factor/LeaderboardDetail.vue
+++ b/frontend/src/views/factor/LeaderboardDetail.vue
@@ -4,10 +4,12 @@ import { useRoute, useRouter } from 'vue-router'
 import { getEvalDetail, type EvalDetail } from '@/api/factor'
 import { useChart } from '@/composables/useChart'
 import { darkTitle, darkTooltip, darkGrid, darkAxis, BRAND } from '@/utils/echartsDark'
+import { useFactorCompareStore } from '@/stores/factorCompare'
 import type { EChartsCoreOption } from 'echarts'
 
 const route = useRoute()
 const router = useRouter()
+const compareStore = useFactorCompareStore()
 const period = ref<'1' | '5' | '10'>('1')
 const detail = ref<EvalDetail | null>(null)
 const error = ref('')
@@ -38,6 +40,13 @@ function goToNewFactor() {
   router.push({ path: '/factor/new', query: { factor: detail.value?.factor || '' } })
 }
 
+const inCompare = computed(() => detail.value ? compareStore.isSelected(detail.value.factor) : false)
+
+function toggleCompare() {
+  if (!detail.value) return
+  compareStore.toggle(detail.value.factor, route.query.run ? String(route.query.run) : undefined)
+}
+
 const currentMetrics = computed(() => {
   if (!detail.value?.metrics) return null
   const metrics = detail.value.metrics as Record<string, unknown>
@@ -306,7 +315,9 @@ function pct(val: number | null | undefined): string {
       <!-- Actions -->
       <div class="actions">
         <button class="btn primary" @click="goToNewFactor">查看完整 tears 报告</button>
-        <button class="btn">加入对比</button>
+        <button class="btn" :class="{ chosen: inCompare }" @click="toggleCompare">
+          {{ inCompare ? '✓ 已加入对比' : '加入对比' }}
+        </button>
       </div>
     </template>
   </div>
@@ -575,6 +586,13 @@ function pct(val: number | null | undefined): string {
   background: var(--cyan-dim);
 }
 
+/* 已加入对比的选中态(青色终端风) */
+.btn.chosen {
+  color: var(--brand);
+  border-color: rgba(0, 229, 255, 0.35);
+  background: var(--cyan-soft);
+}
+
 .cat-chip {
   display: inline-block;
   padding: 1px 8px;
diff --git a/frontend/src/views/factor/Result.vue b/frontend/src/views/factor/Result.vue
index 5395727..7dc6b13 100644
--- a/frontend/src/views/factor/Result.vue
+++ b/frontend/src/views/factor/Result.vue
@@ -2,7 +2,8 @@
 import { ref, computed, onMounted } from 'vue'
 import { useRoute } from 'vue-router'
 import { ElMessage } from 'element-plus'
-import { getIcSummary, reportUrl } from '@/api/factor'
+import { getIcSummary } from '@/api/factor'
+import TearsPanel from './TearsPanel.vue'
 
 interface IcStats {
   mean?: number
@@ -124,12 +125,12 @@ onMounted(async () => {
       </el-table>
     </el-card>
 
-    <!-- tears 报告 -->
+    <!-- tears 报告(方案A:原生 ECharts 暗色渲染,旧任务自动回退 iframe alphalens 报告) -->
     <el-card class="blk" shadow="never" v-if="factors.length">
       <template #header><span class="section-title">分层 tears 报告</span></template>
       <el-tabs v-model="activeReport" type="card">
-        <el-tab-pane v-for="f in factors" :key="f" :label="f" :name="f">
-          <iframe :src="reportUrl(taskId, f)" class="report-frame" />
+        <el-tab-pane v-for="f in factors" :key="f" :label="f" :name="f" lazy>
+          <TearsPanel :task-id="taskId" :factor="f" />
         </el-tab-pane>
       </el-tabs>
     </el-card>
@@ -145,5 +146,4 @@ onMounted(async () => {
 .m-value { margin-top: 6px; font-size: 20px; font-weight: 700; color: var(--text); }
 
 .blk { border: 1px solid var(--border-2); }
-.report-frame { width: 100%; height: 620px; border: 0; }
 </style>
diff --git a/frontend/src/views/factor/TearsPanel.vue b/frontend/src/views/factor/TearsPanel.vue
new file mode 100644
index 0000000..7ada7de
--- /dev/null
+++ b/frontend/src/views/factor/TearsPanel.vue
@@ -0,0 +1,379 @@
+<script setup lang="ts">
+// tears 分层序列原生渲染(方案A,用户 2026-08-29 拍板)——替代 iframe 内嵌
+// alphalens 浅色 HTML:同一批序列(月度/累计IC、十分组净值、多空净值)ECharts 暗色化。
+// 视觉蓝本 docs/factor_research/factor-tears-compare-mockup.html tab①。
+import { ref, computed, onMounted, watch, nextTick } from 'vue'
+import type { AxiosError } from 'axios'
+import { getTearsData, reportUrl } from '@/api/factor'
+import type { TearsData, TearsPeriodData } from '@/api/factor'
+import { useChart } from '@/composables/useChart'
+import { darkTooltip, darkAxis, UP, DOWN, BRAND, AMBER, TEXT_DIM, AXIS, SPLIT } from '@/utils/echartsDark'
+
+const props = defineProps<{ taskId: string; factor: string }>()
+
+const PERIODS = ['1D', '5D', '10D'] as const
+const loading = ref(true)
+const err = ref('')
+// 旧任务(本功能上线前分析)无 tears JSON → 回退 iframe 旧 alphalens 报告
+const stale = ref(false)
+const data = ref<TearsData | null>(null)
+const period = ref<(typeof PERIODS)[number]>('1D')
+
+const d = computed<TearsPeriodData | null>(() => data.value?.periods?.[period.value] ?? null)
+
+const icEl = ref<HTMLDivElement>()
+const qnavEl = ref<HTMLDivElement>()
+const lsEl = ref<HTMLDivElement>()
+const decEl = ref<HTMLDivElement>()
+const decayEl = ref<HTMLDivElement>()
+const ic = useChart(icEl)
+const qnav = useChart(qnavEl)
+const ls = useChart(lsEl)
+const dec = useChart(decEl)
+const decay = useChart(decayEl)
+
+function fmt(v: number | null | undefined, digits: number): string {
+  return typeof v === 'number' ? v.toFixed(digits) : '—'
+}
+
+// darkAxis() 返回 Record<string, unknown>,axisLabel 单取是 unknown → 提一次供各处 spread
+const MONO_LABEL = darkAxis().axisLabel as Record<string, unknown>
+function pct(v: number | null | undefined, digits = 1): string {
+  return typeof v === 'number' ? `${v >= 0 ? '+' : ''}${(v * 100).toFixed(digits)}%` : '—'
+}
+function sgn(v: number | null | undefined): string {
+  if (typeof v !== 'number' || v === 0) return ''
+  return v > 0 ? 'up' : 'down'
+}
+
+// 指标条 7 格(设计稿 metric-strip)
+const strip = computed(() => {
+  const p = d.value
+  if (!p) return []
+  return [
+    { k: `IC 均值 (${period.value})`, v: fmt(p.ic_mean, 3), cls: sgn(p.ic_mean) },
+    { k: 'ICIR', v: fmt(p.icir, 2), cls: sgn(p.icir) },
+    { k: 't 值', v: fmt(p.t_stat, 1), cls: sgn(p.t_stat) },
+    { k: 'IC 胜率', v: fmt(p.win_rate != null ? p.win_rate * 100 : null, 1) + '%', cls: '' },
+    { k: '多空年化', v: pct(p.ls_annual), cls: sgn(p.ls_annual) },
+    { k: '多空最大回撤', v: pct(p.ls_max_dd), cls: 'down' },
+    { k: '因子自相关', v: fmt(data.value?.factor_autocorr ?? null, 2), cls: '' },
+  ]
+})
+
+// —— 月度 IC 热力图(CSS grid,红正绿负,alpha 随 |IC|) ——
+
+const heatRows = computed<{ year: string; cells: (number | null)[] }[]>(() => {
+  const mi = d.value?.monthly_ic ?? []
+  const byYear = new Map<string, (number | null)[]>()
+  for (const p of mi) {
+    const y = p.month.slice(0, 4)
+    let cells = byYear.get(y)
+    if (!cells) { cells = Array<number | null>(12).fill(null); byYear.set(y, cells) }
+    cells[Number(p.month.slice(5)) - 1] = p.ic
+  }
+  return [...byYear.entries()].map(([year, cells]) => ({ year, cells }))
+})
+
+function heatCell(v: number | null): Record<string, string> {
+  if (v == null) return { background: 'var(--panel)', color: 'var(--text-3)' }
+  const a = Math.min(1, Math.abs(v) / 0.16)
+  const rgb = v >= 0 ? '255,77,94' : '46,230,138'
+  return {
+    background: `rgba(${rgb},${(0.08 + a * 0.72).toFixed(2)})`,
+    color: a > 0.55 ? '#05080d' : 'var(--text-2)',
+  }
+}
+function heatText(v: number | null): string {
+  if (v == null) return ''
+  const r = Math.round(v * 100) / 100
+  if (r === 0) return '0'
+  return r > 0 ? r.toFixed(2).replace(/^0/, '') : r.toFixed(2).replace(/^-0/, '-')
+}
+
+// —— 图表渲染 ——
+
+function renderIc(): void {
+  const p = d.value
+  if (!p || !p.monthly_ic.length) return
+  const mi = p.monthly_ic
+  const months = mi.map((x) => x.month.slice(2))
+  let c = 0
+  const cum = mi.map((x) => (c += x.ic, Math.round(c * 1e4) / 1e4))
+  const mx = Math.max(0.12, ...mi.map((x) => Math.abs(x.ic))) * 1.15
+  ic.setOption({
+    tooltip: { ...darkTooltip(), valueFormatter: (v: number) => (typeof v === 'number' ? v.toFixed(3) : String(v)) },
+    legend: { top: 4, right: 8, textStyle: { color: TEXT_DIM, fontSize: 11 }, itemWidth: 14, itemHeight: 9 },
+    grid: { left: 44, right: 52, top: 34, bottom: 28 },
+    xAxis: { type: 'category', data: months, ...darkAxis() },
+    yAxis: [
+      { type: 'value', min: -mx, max: mx, ...darkAxis(), axisLabel: { ...MONO_LABEL, formatter: (v: number) => v.toFixed(2) } },
+      { type: 'value', max: (v: { max: number }) => v.max * 1.05, ...darkAxis(), axisLabel: { color: BRAND, fontSize: 11, formatter: (v: number) => v.toFixed(1) }, splitLine: { show: false } },
+    ],
+    series: [
+      {
+        name: '月度IC', type: 'bar',
+        data: mi.map((x) => ({ value: x.ic, itemStyle: { color: x.ic >= 0 ? UP : DOWN } })),
+      },
+      {
+        name: '累计IC', type: 'line', yAxisIndex: 1, data: cum, symbol: 'none',
+        lineStyle: { color: BRAND, width: 1.8 },
+      },
+    ],
+  })
+}
+
+function renderQNav(): void {
+  const p = d.value
+  if (!p || !p.nav_dates.length) return
+  const seriesDef = [
+    { q: '10', name: 'Q10 最高组', color: UP },
+    { q: '5', name: 'Q5', color: TEXT_DIM },
+    { q: '1', name: 'Q1 最低组', color: DOWN },
+  ].filter((s) => p.quantile_nav[s.q]?.length)
+  qnav.setOption({
+    tooltip: { ...darkTooltip(), valueFormatter: (v: number) => (typeof v === 'number' ? (v * 100).toFixed(1) + '%' : String(v)) },
+    legend: { top: 4, right: 8, textStyle: { color: TEXT_DIM, fontSize: 11 }, itemWidth: 14, itemHeight: 9 },
+    grid: { left: 52, right: 20, top: 34, bottom: 30 },
+    xAxis: { type: 'time', ...darkAxis() },
+    yAxis: { type: 'value', scale: true, ...darkAxis(), axisLabel: { ...MONO_LABEL, formatter: (v: number) => (v * 100).toFixed(0) + '%' } },
+    series: seriesDef.map((s) => ({
+      name: s.name, type: 'line', data: p.nav_dates.map((dt, i) => [dt, p.quantile_nav[s.q][i]]),
+      symbol: 'none', lineStyle: { color: s.color, width: 1.8 },
+    })),
+  })
+}
+
+function renderLs(): void {
+  const p = d.value
+  if (!p || !p.ls_nav.length) return
+  const nav = p.ls_nav
+  // 最大回撤点(前端从净值序列推,与后端 ls_max_dd 同法):谷底 + 对应峰值起点
+  let peak = -Infinity
+  let peakIdx = 0
+  let ddIdx = 0
+  let ddVal = 0
+  let peakAtDd = 0
+  nav.forEach((v, i) => {
+    if (v > peak) { peak = v; peakIdx = i }
+    const dd = v / peak - 1
+    if (dd < ddVal) { ddVal = dd; ddIdx = i; peakAtDd = peakIdx }
+  })
+  ls.setOption({
+    tooltip: { ...darkTooltip(), valueFormatter: (v: number) => (typeof v === 'number' ? (v * 100).toFixed(1) + '%' : String(v)) },
+    grid: { left: 52, right: 20, top: 30, bottom: 30 },
+    xAxis: { type: 'time', ...darkAxis() },
+    yAxis: { type: 'value', scale: true, ...darkAxis(), axisLabel: { ...MONO_LABEL, formatter: (v: number) => (v * 100).toFixed(0) + '%' } },
+    series: [{
+      name: 'Q10−Q1 多空净值', type: 'line',
+      data: p.nav_dates.map((dt, i) => [dt, nav[i]]),
+      symbol: 'none', lineStyle: { color: AMBER, width: 1.8 },
+      areaStyle: { color: 'rgba(255,176,0,0.10)' },
+      markPoint: {
+        symbol: 'circle', symbolSize: 10,
+        itemStyle: { color: 'transparent', borderColor: DOWN, borderWidth: 1.5 },
+        label: {
+          show: true, position: 'top', color: DOWN, fontSize: 10,
+          formatter: `最大回撤 ${(ddVal * 100).toFixed(1)}%\n${p.nav_dates[peakAtDd]?.slice(0, 7) ?? ''}~${p.nav_dates[ddIdx]?.slice(0, 7) ?? ''}`,
+        },
+        data: ddVal < 0 ? [{ coord: [p.nav_dates[ddIdx], nav[ddIdx]] }] : [],
+      },
+    }],
+  })
+}
+
+function renderDec(): void {
+  const p = d.value
+  if (!p || !p.quantile_keys.length) return
+  const ks = p.quantile_keys
+  dec.setOption({
+    tooltip: { ...darkTooltip(), valueFormatter: (v: number) => (typeof v === 'number' ? `${v >= 0 ? '+' : ''}${(v * 100).toFixed(1)}%` : String(v)) },
+    grid: { left: 48, right: 16, top: 30, bottom: 28 },
+    xAxis: { type: 'category', data: ks.map((k) => `D${k}`), ...darkAxis() },
+    yAxis: { type: 'value', ...darkAxis(), axisLabel: { ...MONO_LABEL, formatter: (v: number) => `${v >= 0 ? '+' : ''}${(v * 100).toFixed(0)}%` } },
+    series: [{
+      type: 'bar', barWidth: '55%',
+      data: ks.map((k) => {
+        const v = p.quantile_annual[k] ?? 0
+        return { value: v, itemStyle: { color: v >= 0 ? UP : DOWN } }
+      }),
+      label: {
+        show: true, position: 'top', color: TEXT_DIM, fontSize: 10,
+        formatter: (o: { value: number }) => `${o.value >= 0 ? '+' : ''}${(o.value * 100).toFixed(1)}%`,
+      },
+      markLine: {
+        silent: true, symbol: 'none',
+        lineStyle: { color: AXIS, type: 'dashed' },
+        label: { color: TEXT_DIM, fontSize: 10, formatter: (o: { value: number }) => `${o.value > 0 ? '+' : ''}${o.value * 100}%` },
+        data: [{ yAxis: 0.05 }, { yAxis: -0.05 }],
+      },
+    }],
+  })
+}
+
+function renderDecay(): void {
+  const root = data.value
+  if (!root) return
+  const items = PERIODS
+    .map((p) => ({ p, v: root.periods[p]?.ic_mean }))
+    .filter((x): x is { p: (typeof PERIODS)[number]; v: number } => typeof x.v === 'number')
+  if (!items.length) return
+  decay.setOption({
+    tooltip: { ...darkTooltip(), valueFormatter: (v: number) => (typeof v === 'number' ? v.toFixed(4) : String(v)) },
+    grid: { left: 44, right: 16, top: 30, bottom: 28 },
+    xAxis: { type: 'category', data: items.map((x) => x.p), ...darkAxis() },
+    yAxis: { type: 'value', ...darkAxis(), axisLabel: { ...MONO_LABEL, formatter: (v: number) => v.toFixed(2) } },
+    series: [{
+      type: 'bar', barWidth: '40%',
+      data: items.map((x) => ({ value: x.v, itemStyle: { color: 'rgba(0,229,255,0.7)' } })),
+      label: { show: true, position: 'top', color: BRAND, fontSize: 10, formatter: (o: { value: number }) => o.value.toFixed(3) },
+      markLine: {
+        silent: true, symbol: 'none', lineStyle: { color: SPLIT },
+        label: { show: false }, data: [{ yAxis: 0 }],
+      },
+    }],
+  })
+}
+
+function renderAll(): void {
+  renderIc()
+  renderQNav()
+  renderLs()
+  renderDec()
+  renderDecay()
+}
+
+watch(period, () => nextTick(renderAll))
+
+onMounted(async () => {
+  try {
+    data.value = await getTearsData(props.taskId, props.factor)
+    if (!data.value.periods || !Object.keys(data.value.periods).length) stale.value = true
+    else await nextTick(renderAll)
+  } catch (e) {
+    if ((e as AxiosError)?.response?.status === 404) stale.value = true
+    else err.value = 'tears 数据加载失败'
+  } finally {
+    loading.value = false
+  }
+})
+</script>
+
+<template>
+  <div v-loading="loading" class="tears-panel">
+    <template v-if="stale">
+      <div class="stale-note">
+        该任务在旧版本下分析,没有分层序列数据——已回退到原 alphalens 报告,重新提交分析即可获得新版 tears。
+      </div>
+      <iframe :src="reportUrl(props.taskId, props.factor)" class="report-frame" />
+    </template>
+    <div v-else-if="err" class="stale-note">{{ err }}</div>
+    <template v-else-if="d">
+      <div class="tears-head">
+        <span class="factor-name mono">{{ props.factor }}</span>
+        <span v-if="data?.generated_at" class="gen">生成于 {{ data.generated_at.replace('T', ' ') }}</span>
+        <div class="seg">
+          <button v-for="p in PERIODS" :key="p" :class="{ on: p === period }" @click="period = p">{{ p }}</button>
+        </div>
+      </div>
+
+      <div class="metric-strip">
+        <div v-for="m in strip" :key="m.k" class="metric">
+          <div class="k">{{ m.k }}</div>
+          <div class="v mono" :class="m.cls">{{ m.v }}</div>
+        </div>
+      </div>
+
+      <div class="grid2">
+        <div class="chart-card">
+          <h3>月度 IC 与累计 IC</h3>
+          <div class="cs">柱=月度 RankIC(红正绿负) · 线=累计 IC(右轴)</div>
+          <div ref="icEl" class="cbody" />
+        </div>
+        <div class="chart-card">
+          <h3>月度 IC 热力图</h3>
+          <div class="cs">红=正预测力 · 绿=负 · 看月度稳定性与失效期</div>
+          <div class="heat">
+            <div class="heat-row head">
+              <span class="hl" />
+              <span v-for="m in 12" :key="m" class="hm">{{ m }}</span>
+            </div>
+            <div v-for="row in heatRows" :key="row.year" class="heat-row">
+              <span class="hl mono">{{ row.year }}</span>
+              <span v-for="(v, i) in row.cells" :key="i" class="hc mono" :style="heatCell(v)">{{ heatText(v) }}</span>
+            </div>
+          </div>
+        </div>
+        <div class="chart-card">
+          <h3>分组累计净值 Q1 / Q5 / Q10</h3>
+          <div class="cs">按因子值十分组回测净值 · 单调分层=因子有效</div>
+          <div ref="qnavEl" class="cbody" />
+        </div>
+        <div class="chart-card">
+          <h3>多空净值 Q10 − Q1</h3>
+          <div class="cs">做多最高组做空最低组 · ○=最大回撤点</div>
+          <div ref="lsEl" class="cbody" />
+        </div>
+        <div class="chart-card">
+          <h3>十分组年化收益 ({{ period }})</h3>
+          <div class="cs">D1=因子值最低组 · 单调性=区分度</div>
+          <div ref="decEl" class="cbody" />
+        </div>
+        <div class="chart-card">
+          <h3>IC 衰减</h3>
+          <div class="cs">持有期拉长后的 IC 均值 · 衰减快=适合短持有</div>
+          <div ref="decayEl" class="cbody" />
+        </div>
+      </div>
+    </template>
+  </div>
+</template>
+
+<style scoped>
+.tears-panel { display: flex; flex-direction: column; gap: 12px; }
+
+.tears-head { display: flex; align-items: center; gap: 12px; }
+.factor-name { font-size: 16px; font-weight: 700; color: var(--text); }
+.gen { font-size: 11px; color: var(--text-3); }
+.seg { margin-left: auto; display: flex; border: 1px solid var(--border); border-radius: var(--r-sm); overflow: hidden; }
+.seg button {
+  background: transparent; border: 0; color: var(--text-2);
+  font-family: var(--mono); font-size: 12px; padding: 4px 14px; cursor: pointer;
+}
+.seg button + button { border-left: 1px solid var(--border); }
+.seg button.on { background: var(--cyan-soft); color: var(--cyan); }
+
+.metric-strip { display: grid; grid-template-columns: repeat(7, 1fr); gap: 10px; }
+.metric { background: var(--bg-card); border: 1px solid var(--border-2); border-radius: var(--r-md); padding: 10px 12px; }
+.metric .k { font-size: 11px; color: var(--text-3); white-space: nowrap; }
+.metric .v { margin-top: 5px; font-size: 17px; font-weight: 700; color: var(--text); }
+.metric .v.up { color: var(--up); }
+.metric .v.down { color: var(--down); }
+
+.grid2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
+.chart-card { background: var(--bg-card); border: 1px solid var(--border-2); border-radius: var(--r-md); padding: 12px 14px; }
+.chart-card h3 { margin: 0; font-size: 12.5px; font-weight: 600; letter-spacing: 0.04em; color: var(--text); }
+.cs { font-size: 11px; color: var(--text-3); margin: 4px 0 8px; }
+.cbody { width: 100%; height: 240px; }
+
+/* 月度 IC 热力图(年×月格子,同设计稿) */
+.heat { display: flex; flex-direction: column; gap: 3px; padding-top: 4px; }
+.heat-row { display: grid; grid-template-columns: 38px repeat(12, 1fr); gap: 3px; align-items: stretch; }
+.heat-row.head .hm { font-size: 10px; color: var(--text-3); text-align: center; }
+.hl { font-size: 11px; color: var(--text-3); display: flex; align-items: center; justify-content: flex-end; padding-right: 8px; }
+.hc {
+  height: 26px; display: flex; align-items: center; justify-content: center;
+  font-size: 10.5px; border-radius: 2px;
+}
+
+.stale-note {
+  font-size: 12.5px; color: var(--text-2); background: var(--bg-card);
+  border: 1px solid var(--border-2); border-radius: var(--r-md); padding: 10px 14px;
+}
+.report-frame { width: 100%; height: 620px; border: 0; }
+
+@media (max-width: 1100px) {
+  .grid2 { grid-template-columns: 1fr; }
+  .metric-strip { grid-template-columns: repeat(4, 1fr); }
+}
+</style>
diff --git a/sanguo_api/routes.py b/sanguo_api/routes.py
index 9b07f33..b6af6fd 100644
--- a/sanguo_api/routes.py
+++ b/sanguo_api/routes.py
@@ -351,6 +351,23 @@ def factor_report(task_id: str, factor: str, token: str = Query(...)):
     return FileResponse(path)
 
 
+@router.get("/task/{task_id}/tears/{factor}", dependencies=[Depends(verify_token)])
+def factor_tears_json(task_id: str, factor: str):
+    """Tears 分层序列 JSON(方案A):前端 ECharts 暗色 tears 页数据源。
+
+    序列在分析时由 sanguo_factor.tears_data 序列化落盘;历史任务(该代码
+    上线前跑的)没有 tears_paths → 404,重跑一次分析即可生成。
+    """
+    r = get_orchestrator().get_raw_result(task_id)
+    if r is None:
+        raise HTTPException(status_code=404, detail="result not ready")
+    paths = getattr(r, "tears_paths", {}) or {}
+    path = paths.get(factor)
+    if not path or not os.path.exists(path):
+        raise HTTPException(status_code=404, detail=f"tears data for {factor} not found (re-run analysis)")
+    return FileResponse(path, media_type="application/json")
+
+
 # ===== History + Optimization endpoints (S3) =====
 
 def _to_bj(ts: str | None) -> str:
diff --git a/sanguo_factor/analyzer.py b/sanguo_factor/analyzer.py
index 36f2268..66e3ab1 100644
--- a/sanguo_factor/analyzer.py
+++ b/sanguo_factor/analyzer.py
@@ -54,6 +54,7 @@ class FactorReport:
     output_dir: str
     ic_summary: dict = field(default_factory=dict)
     report_paths: dict = field(default_factory=dict)
+    tears_paths: dict = field(default_factory=dict)
     symbols: list[str] = field(default_factory=list)
     start: str = ""
     end: str = ""
@@ -182,6 +183,7 @@ def run_factor_analysis(
     # Initialize IC summary and report paths
     ic_summary = {}
     report_paths = {}
+    tears_paths = {}
 
     # Process each factor
     for factor_name in factor_names:
@@ -292,6 +294,24 @@ def run_factor_analysis(
                 "ic": ic_data,
             }
 
+            # tears JSON 序列化(方案A,独立 try:失败只标注不吞 IC 成功)——
+            # 分层序列 → ECharts 数据源,前端暗色 tears 页替代 iframe 浅色报告
+            try:
+                import json as _json
+                from datetime import datetime as _dt
+                from .tears_data import build_tears_data
+                tears = build_tears_data(merged_data, periods)
+                tears["factor"] = factor_name
+                tears["generated_at"] = _dt.now().isoformat(timespec="seconds")
+                tears_path = os.path.join(output_dir, f"{factor_name}_tears.json")
+                with open(tears_path, "w", encoding="utf-8") as _tf:
+                    _json.dump(tears, _tf, ensure_ascii=False)
+                tears_paths[factor_name] = tears_path
+            except Exception as tears_json_e:
+                ic_summary[factor_name]["tears_json_error"] = (
+                    f"{type(tears_json_e).__name__}: {tears_json_e}"
+                )
+
             # Generate tears sheet（独立 try：tears 失败只标注，不覆盖上面的 IC 成功）
             #
             # alphalens-reloaded 的 create_full_tear_sheet 内部，每个 tear sheet
@@ -375,6 +395,7 @@ def run_factor_analysis(
         output_dir=output_dir,
         ic_summary=ic_summary,
         report_paths=report_paths,
+        tears_paths=tears_paths,
         symbols=symbols,
         start=start,
         end=end,
diff --git a/sanguo_factor/tears_data.py b/sanguo_factor/tears_data.py
new file mode 100644
index 0000000..19ea7dc
--- /dev/null
+++ b/sanguo_factor/tears_data.py
@@ -0,0 +1,125 @@
+"""Tears 分层序列序列化(方案A tears 端点数据源).
+
+create_full_tear_sheet 的 matplotlib 图,本质是"已算好的序列被画成图"——
+本模块把同一批 alphalens performance 序列(日度IC / 分组日度收益 / 因子秩自相关)
+直接序列化成前端 ECharts 可渲染的 dict,替代 iframe 内嵌浅色 HTML 报告
+(用户 2026-08-29 拍板方案A:原生重构)。
+"""
+import pandas as pd
+
+# 与 analyzer.py 同款幂等补丁:alphalens-reloaded 的 demean_forward_returns 用
+# groupby.transform(lambda) 在 pandas2 崩,独立 import 本模块(单测路径)时
+# analyzer 可能未加载 → 补丁不在 → mean_return_by_quantile 崩。重复 patch 无害。
+try:
+    import alphalens.utils as _al_utils
+
+    def _demean_forward_returns_pandas2(factor_data, grouper=None):
+        factor_data = factor_data.copy()
+        if not grouper:
+            grouper = factor_data.index.get_level_values("date")
+        cols = _al_utils.get_forward_returns_columns(factor_data.columns)
+        means = factor_data.groupby(grouper)[cols].transform("mean")
+        factor_data[cols] = factor_data[cols] - means
+        return factor_data
+
+    _al_utils.demean_forward_returns = _demean_forward_returns_pandas2
+except ImportError:
+    pass
+
+_TRADING_DAYS = 252
+
+
+def _nav(daily: pd.Series) -> pd.Series:
+    """日度收益(可含重叠窗口)→ 累计净值,首值 1;NaN 日视为空仓(0 收益)."""
+    return (1.0 + daily.fillna(0.0)).cumprod()
+
+
+def _max_drawdown(nav: pd.Series) -> float:
+    """净值序列最大回撤(≤0)."""
+    v = (nav / nav.cummax() - 1.0).min()
+    return float(v) if pd.notna(v) else 0.0
+
+
+def _annualized(daily: pd.Series, period: int) -> float:
+    """日均 × 252 / period:线性去重叠年化,1/5/10D 三周期可比(1D≈eval 链路口径)."""
+    s = daily.dropna()
+    if s.empty:
+        return 0.0
+    return float(s.mean() * _TRADING_DAYS / period)
+
+
+def _monthly_ic(ic: pd.Series) -> list[dict]:
+    """日度 IC 按月聚合(月度柱/热力图数据),口径同 sanguo_factor.metrics.monthly_ic."""
+    s = ic.dropna()
+    if s.empty:
+        return []
+    g = s.groupby(s.index.to_period("M")).mean()
+    return [{"month": t.strftime("%Y-%m"), "ic": round(float(v), 6)} for t, v in g.items()]
+
+
+def build_tears_data(merged_data, periods: tuple = (1, 5, 10)) -> dict:
+    """alphalens factor_data → tears 序列 dict.
+
+    每序列自带日期轴(ic_dates/nav_dates);IC/分组收益均调 alphalens 原函数,
+    与 tearsheet 同源。quantile_nav 给全 10 组,前端按需画 Q1/Q5/Q10。
+    """
+    from alphalens.performance import (
+        factor_information_coefficient,
+        factor_rank_autocorrelation,
+        mean_return_by_quantile,
+    )
+
+    ic_df = factor_information_coefficient(merged_data)
+    qr_by_date, _ = mean_return_by_quantile(merged_data, by_date=True, demeaned=True)
+
+    # 因子秩自相关(1D,指标条一项):失败不致命 → None
+    try:
+        ac = factor_rank_autocorrelation(merged_data, period=1).dropna()
+        factor_autocorr = round(float(ac.mean()), 4) if len(ac) else None
+    except Exception:
+        factor_autocorr = None
+
+    out: dict = {"factor_autocorr": factor_autocorr, "periods": {}}
+    for p in periods:
+        # 列名兼容:alphalens-reloaded 生成 "1D",老版纯数字 "1"(同 analyzer 口径)
+        col = next((c for c in ic_df.columns if c in (f"{p}D", str(p))), None)
+        if col is None:
+            continue
+
+        ic = ic_df[col].dropna()
+        qd = qr_by_date[col].unstack("factor_quantile")  # date × quantile
+        qkeys = sorted(int(q) for q in qd.columns)
+
+        quantile_nav: dict = {}
+        quantile_annual: dict = {}
+        for q in qkeys:
+            daily_q = qd[q]
+            quantile_nav[str(q)] = [round(float(v), 6) for v in _nav(daily_q)]
+            quantile_annual[str(q)] = round(_annualized(daily_q, p), 4)
+
+        # 多空 = 最高分位 − 最低分位(每日,demeaned 超额口径同 tearsheet)
+        ls_daily = qd[qkeys[-1]] - qd[qkeys[0]]
+        ls_nav = _nav(ls_daily)
+
+        n = len(ic)
+        m = float(ic.mean()) if n else 0.0
+        sd = float(ic.std()) if n > 1 else 0.0
+        out["periods"][f"{p}D"] = {
+            "count": int(n),
+            "ic_mean": round(m, 6) if n else None,
+            "ic_std": round(sd, 6) if n > 1 else None,
+            "icir": round(m / sd, 4) if sd > 0 else None,
+            "t_stat": round(m / (sd / n ** 0.5), 4) if sd > 0 and n > 1 else None,
+            "win_rate": round(float((ic > 0).mean()), 4) if n else None,
+            "ic_dates": [d.strftime("%Y-%m-%d") for d in ic.index],
+            "ic_values": [round(float(v), 6) for v in ic],
+            "monthly_ic": _monthly_ic(ic),
+            "quantile_keys": [str(q) for q in qkeys],
+            "nav_dates": [d.strftime("%Y-%m-%d") for d in qd.index],
+            "quantile_nav": quantile_nav,
+            "quantile_annual": quantile_annual,
+            "ls_nav": [round(float(v), 6) for v in ls_nav],
+            "ls_annual": round(_annualized(ls_daily, p), 4),
+            "ls_max_dd": round(_max_drawdown(ls_nav), 4),
+        }
+    return out
diff --git a/sanguo_orchestrator/runner.py b/sanguo_orchestrator/runner.py
index 8ebb626..ac8a74a 100644
--- a/sanguo_orchestrator/runner.py
+++ b/sanguo_orchestrator/runner.py
@@ -296,7 +296,8 @@ class Orchestrator:
                 params={"factor_names": fr.factor_names},
                 start=getattr(fr, "start", "") or "",
                 end=getattr(fr, "end", "") or "",
-                statistics={"ic_summary": fr.ic_summary, "report_paths": fr.report_paths},
+                statistics={"ic_summary": fr.ic_summary, "report_paths": fr.report_paths,
+                            "tears_paths": getattr(fr, "tears_paths", None) or {}},
                 equity_curve=None, trades=None,
             ), db_path=self.db_path)
         except Exception as e:
diff --git a/tests/api/test_factor_routes.py b/tests/api/test_factor_routes.py
index 64fbca9..8654fde 100644
--- a/tests/api/test_factor_routes.py
+++ b/tests/api/test_factor_routes.py
@@ -10,9 +10,10 @@ from sanguo_api.auth import hash_password
 class FakeReport:
     """Stand-in for FactorReport."""
 
-    def __init__(self, ic_summary: dict, report_paths: dict):
+    def __init__(self, ic_summary: dict, report_paths: dict, tears_paths: dict | None = None):
         self.ic_summary = ic_summary
         self.report_paths = report_paths
+        self.tears_paths = tears_paths or {}
 
 
 class FakeOrch:
@@ -71,3 +72,33 @@ def test_report_bad_token_401(client):
 def test_report_file_absent_404(client, token):
     r = client.get(f"/api/v1/task/t/report/ma5?token={token}")
     assert r.status_code == 404
+
+
+# —— tears JSON 端点(方案A) ——
+
+def test_tears_json_no_token_401(client):
+    r = client.get("/api/v1/task/t/tears/ma5")
+    assert r.status_code == 401
+
+
+def test_tears_json_absent_404(client, token):
+    """fixture 的 FakeReport 无 tears_paths → 404(历史任务语义)."""
+    r = client.get("/api/v1/task/t/tears/ma5", headers={"Authorization": f"Bearer {token}"})
+    assert r.status_code == 404
+
+
+def test_tears_json_served(client, token, tmp_path):
+    """tears_paths 指向真实 JSON 文件 → 200 + application/json."""
+    import json
+    p = tmp_path / "ma5_tears.json"
+    p.write_text(json.dumps({"factor": "ma5", "periods": {"1D": {"ic_mean": 0.06}}}),
+                 encoding="utf-8")
+    set_orchestrator(FakeOrch(FakeReport(
+        ic_summary={"ma5": {"status": "success", "ic": {}}},
+        report_paths={"ma5": "/tmp/__definitely_absent_ma5.html"},
+        tears_paths={"ma5": str(p)},
+    )))
+    r = client.get("/api/v1/task/t/tears/ma5", headers={"Authorization": f"Bearer {token}"})
+    assert r.status_code == 200
+    assert r.headers["content-type"].startswith("application/json")
+    assert r.json()["factor"] == "ma5"
diff --git a/tests/factor/test_analyzer.py b/tests/factor/test_analyzer.py
index 7adfcad..da6aae6 100644
--- a/tests/factor/test_analyzer.py
+++ b/tests/factor/test_analyzer.py
@@ -232,6 +232,102 @@ def test_run_factor_analysis_extracts_ic_values(tmp_path):
         assert abs(ic_data["1D"]["mean"] - 0.05) < 0.01  # Allow small rounding errors
 
 
+def test_run_factor_analysis_writes_tears_json(tmp_path):
+    """tears JSON(方案A)写盘 + FactorReport.tears_paths 记录 + factor/generated_at 补齐."""
+    import pytest
+    pytest.importorskip("polars")
+    pytest.importorskip("alphalens")
+
+    import json
+    import pandas as pd
+    from sanguo_factor.analyzer import run_factor_analysis
+
+    dates = pd.date_range("2024-01-01", periods=6, freq="D", tz="Asia/Shanghai")
+    mock_factor_data = pd.DataFrame(index=pd.MultiIndex.from_product(
+        [dates, ["AAPL"]], names=["datetime", "asset"]))
+    mock_factor_data["factor"] = [0.5] * 6
+    mock_factor_data["1D"] = [0.01] * 6
+    mock_factor_data["5D"] = [0.05] * 6
+    mock_factor_data["10D"] = [0.10] * 6
+
+    mock_pl_df = MagicMock()
+    mock_pl_df.to_pandas.return_value = pd.DataFrame({
+        "datetime": [d.isoformat() for d in dates],
+        "vt_symbol": ["AAPL"] * 6,
+        "ma5": [0.5] * 6,
+    })
+
+    with patch("sanguo_factor.analyzer.AlphaLabSession") as MS, \
+         patch("sanguo_factor.analyzer.get_clean_factor_and_forward_returns") as MC, \
+         patch("sanguo_factor.analyzer.create_full_tear_sheet"), \
+         patch("sanguo_factor.analyzer.factor_information_coefficient") as MIC, \
+         patch("sanguo_factor.tears_data.build_tears_data",
+               return_value={"factor_autocorr": 0.9, "periods": {"1D": {"ic_mean": 0.1}}}) as MB, \
+         patch("sanguo_data.datareader.read_db_daily",
+               return_value=_fake_bars("AAPL", range(1, 7))):
+        MS.return_value.compute_factors.return_value = mock_pl_df
+        MC.return_value = mock_factor_data
+        MIC.return_value = pd.DataFrame(
+            {"1D": [0.05, 0.04, 0.06, 0.05, 0.04, 0.06]}, index=dates)
+
+        report = run_factor_analysis(
+            ["AAPL"], ["ma5"], "2024-01-01", "2024-01-10",
+            cfg=MagicMock(), output_dir=str(tmp_path)
+        )
+        MB.assert_called_once()
+        assert "ma5" in report.tears_paths
+        assert report.tears_paths["ma5"].endswith("ma5_tears.json")
+        assert os.path.exists(report.tears_paths["ma5"])
+        with open(report.tears_paths["ma5"], encoding="utf-8") as f:
+            data = json.load(f)
+        assert data["factor"] == "ma5"
+        assert data["periods"]["1D"]["ic_mean"] == 0.1
+        assert data["generated_at"]
+
+
+def test_run_factor_analysis_tears_json_error_not_fatal(tmp_path):
+    """build_tears_data 抛错 → 只标注 tears_json_error,IC 结果保留."""
+    import pytest
+    pytest.importorskip("polars")
+    pytest.importorskip("alphalens")
+
+    import pandas as pd
+    from sanguo_factor.analyzer import run_factor_analysis
+
+    dates = pd.date_range("2024-01-01", periods=4, freq="D", tz="Asia/Shanghai")
+    mock_factor_data = pd.DataFrame(index=pd.MultiIndex.from_product(
+        [dates, ["AAPL"]], names=["datetime", "asset"]))
+    for c in ("factor", "1D", "5D", "10D"):
+        mock_factor_data[c] = [0.5] * 4
+
+    mock_pl_df = MagicMock()
+    mock_pl_df.to_pandas.return_value = pd.DataFrame({
+        "datetime": [d.isoformat() for d in dates],
+        "vt_symbol": ["AAPL"] * 4,
+        "ma5": [0.5] * 4,
+    })
+
+    with patch("sanguo_factor.analyzer.AlphaLabSession") as MS, \
+         patch("sanguo_factor.analyzer.get_clean_factor_and_forward_returns") as MC, \
+         patch("sanguo_factor.analyzer.create_full_tear_sheet"), \
+         patch("sanguo_factor.analyzer.factor_information_coefficient") as MIC, \
+         patch("sanguo_factor.tears_data.build_tears_data",
+               side_effect=RuntimeError("boom")), \
+         patch("sanguo_data.datareader.read_db_daily",
+               return_value=_fake_bars("AAPL", range(1, 5))):
+        MS.return_value.compute_factors.return_value = mock_pl_df
+        MC.return_value = mock_factor_data
+        MIC.return_value = pd.DataFrame({"1D": [0.05, 0.04, 0.06, 0.05]}, index=dates)
+
+        report = run_factor_analysis(
+            ["AAPL"], ["ma5"], "2024-01-01", "2024-01-10",
+            cfg=MagicMock(), output_dir=str(tmp_path)
+        )
+        assert report.ic_summary["ma5"]["status"] == "success"
+        assert "tears_json_error" in report.ic_summary["ma5"]
+        assert report.tears_paths == {}
+
+
 def test_run_factor_analysis_ic_extraction_fails_gracefully(tmp_path):
     """Test that IC extraction failures don't crash the pipeline.
 
diff --git a/tests/factor/test_tears_data.py b/tests/factor/test_tears_data.py
new file mode 100644
index 0000000..555f6f3
--- /dev/null
+++ b/tests/factor/test_tears_data.py
@@ -0,0 +1,129 @@
+"""Test tears_data - 分层序列序列化(方案A tears 端点数据源)."""
+import sys
+import os
+_VNPY_SRC = os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "..", "vnpy_v4.4.0"))
+if _VNPY_SRC not in sys.path:
+    sys.path.insert(0, _VNPY_SRC)
+
+import numpy as np
+import pandas as pd
+import pytest
+
+
+# —— 纯函数(不依赖 alphalens,本地必跑) ——
+
+def test_nav_compound():
+    from sanguo_factor.tears_data import _nav
+    nav = _nav(pd.Series([0.1, -0.2, 0.1]))
+    assert list(np.round(nav.values, 6)) == [1.1, 0.88, 0.968]
+
+
+def test_nav_nan_day_is_flat():
+    from sanguo_factor.tears_data import _nav
+    nav = _nav(pd.Series([np.nan, 0.1]))
+    assert nav.iloc[0] == 1.0
+    assert abs(nav.iloc[1] - 1.1) < 1e-9
+
+
+def test_max_drawdown():
+    from sanguo_factor.tears_data import _max_drawdown, _nav
+    nav = _nav(pd.Series([0.1, -0.2, 0.1]))
+    dd = _max_drawdown(nav)
+    assert dd <= 0
+    assert abs(dd - (0.88 / 1.1 - 1.0)) < 1e-9
+
+
+def test_annualized_deoverlaps_period():
+    from sanguo_factor.tears_data import _annualized
+    s = pd.Series([0.001] * 252)  # 日均 0.001
+    assert abs(_annualized(s, 1) - 0.252) < 1e-9
+    # 同收益按 5D 重叠口径 → 年化除以 5(去重叠,三周期可比)
+    assert abs(_annualized(s, 5) - 0.0504) < 1e-9
+
+
+def test_monthly_ic_groups_by_month():
+    from sanguo_factor.tears_data import _monthly_ic
+    idx = pd.to_datetime(["2024-01-05", "2024-01-20", "2024-02-01"])
+    g = _monthly_ic(pd.Series([0.1, 0.3, 0.2], index=idx))
+    assert [x["month"] for x in g] == ["2024-01", "2024-02"]
+    assert abs(g[0]["ic"] - 0.2) < 1e-9
+    assert g[1]["ic"] == 0.2
+
+
+# —— build_tears_data 全链(真实 alphalens 函数) ——
+
+def _merged_data(n_days: int = 40, n_assets: int = 20, seed: int = 7) -> pd.DataFrame:
+    """合成 alphalens factor_data:因子与前瞻收益秩正相关(rank IC 显著为正)."""
+    rng = np.random.default_rng(seed)
+    dates = pd.date_range("2024-01-02", periods=n_days, freq="B", name="date")
+    assets = [f"S{i:03d}" for i in range(n_assets)]
+    idx = pd.MultiIndex.from_product([dates, assets], names=["date", "asset"])
+    factor = rng.normal(size=len(idx))
+    df = pd.DataFrame({"factor": factor}, index=idx)
+    # 横截面 rank(0~1)驱动前瞻收益 → IC>0;1/5/10D 噪声递减信号不变
+    rk = pd.Series(factor, index=idx).groupby(level="date").rank(pct=True).values
+    base = (rk - 0.5) * 0.04
+    for p in (1, 5, 10):
+        df[f"{p}D"] = base + rng.normal(0, 0.01, size=len(idx))
+    df["factor_quantile"] = (
+        pd.Series(factor, index=idx).groupby(level="date")
+        .transform(lambda x: pd.qcut(x, 10, labels=False) + 1)
+        .astype(int)
+    )
+    return df
+
+
+@pytest.fixture(scope="module")
+def built():
+    pytest.importorskip("alphalens")
+    from sanguo_factor.tears_data import build_tears_data
+    return build_tears_data(_merged_data())
+
+
+def test_build_tears_data_period_keys(built):
+    assert set(built["periods"]) == {"1D", "5D", "10D"}
+
+
+def test_build_tears_data_ic_positive(built):
+    """合成因子与收益正相关 → 三周期 IC 均值/ICIR 为正,胜率过半."""
+    for p in ("1D", "5D", "10D"):
+        d = built["periods"][p]
+        assert d["ic_mean"] > 0, p
+        assert d["icir"] > 0, p
+        assert d["t_stat"] > 2, p
+        assert d["win_rate"] > 0.5, p
+
+
+def test_build_tears_data_series_shapes(built):
+    d1 = built["periods"]["1D"]
+    n_nav = len(d1["nav_dates"])
+    assert n_nav == 40
+    assert d1["quantile_keys"] == [str(i) for i in range(1, 11)]
+    for q in d1["quantile_keys"]:
+        assert len(d1["quantile_nav"][q]) == n_nav, q
+    assert len(d1["ls_nav"]) == n_nav
+    assert len(d1["ic_dates"]) == d1["count"]
+    assert len(d1["ic_dates"]) == len(d1["ic_values"])
+    # 净值恒正(首值 = 1+首日收益,同 alphalens cum_returns 口径)
+    assert all(v > 0 for v in d1["quantile_nav"]["1"])
+    assert all(v > 0 for v in d1["ls_nav"])
+
+
+def test_build_tears_data_quantile_monotonic(built):
+    """信号由 rank 驱动 → Q10 年化 > Q1 年化,多空年化为正."""
+    d1 = built["periods"]["1D"]
+    assert d1["quantile_annual"]["10"] > d1["quantile_annual"]["1"]
+    assert d1["ls_annual"] > 0
+    assert d1["ls_max_dd"] <= 0
+
+
+def test_build_tears_data_monthly_ic_present(built):
+    d1 = built["periods"]["1D"]
+    assert d1["monthly_ic"], "monthly_ic 不应为空(40 个交易日 ≥ 1 个月)"
+    assert "month" in d1["monthly_ic"][0] and "ic" in d1["monthly_ic"][0]
+
+
+def test_build_tears_data_json_serializable(built):
+    """端点要 FileResponse 这个 dict → 必须整棵 json 可序列化."""
+    import json
+    json.dumps(built)