diff --git a/frontend/src/styles/tokens.css b/frontend/src/styles/tokens.css
index d97151f..015cb07 100644
--- a/frontend/src/styles/tokens.css
+++ b/frontend/src/styles/tokens.css
@@ -20,6 +20,9 @@
   --cyan-dim: #00b8cc;    /* 暗青（hover/次要激活） */
   --cyan-soft: rgba(0, 229, 255, 0.14);  /* 青色填充底 */
 
+  /* —— 次强调：紫（alpha158）—— */
+  --purple-dim: #b48cff;  /* alpha158 类别色 */
+
   /* —— 数据高亮：琥珀 —— */
   --amber: #ffb000;       /* 数据高亮/警告 */
   --warn: #ffb000;        /* 语义别名 */
diff --git a/frontend/src/views/factor/Leaderboard.vue b/frontend/src/views/factor/Leaderboard.vue
index ea0a4b0..6793424 100644
--- a/frontend/src/views/factor/Leaderboard.vue
+++ b/frontend/src/views/factor/Leaderboard.vue
@@ -269,14 +269,14 @@ onMounted(async () => {
 }
 
 .btn.primary {
-  color: #04141a;
+  color: var(--text);
   background: var(--brand);
   border-color: var(--brand);
   box-shadow: var(--glow-cyan);
 }
 
 .btn.primary:hover {
-  background: #33ecff;
+  background: var(--cyan-dim);
 }
 
 .stats {
@@ -572,7 +572,7 @@ td .fexpr {
 }
 
 .cat-alpha158 {
-  color: #b48cff;
+  color: var(--purple-dim);
   background: rgba(180, 140, 255, 0.1);
   border-color: rgba(180, 140, 255, 0.3);
 }
diff --git a/frontend/src/views/factor/LeaderboardDetail.vue b/frontend/src/views/factor/LeaderboardDetail.vue
index 2719fab..fe94898 100644
--- a/frontend/src/views/factor/LeaderboardDetail.vue
+++ b/frontend/src/views/factor/LeaderboardDetail.vue
@@ -1,28 +1,313 @@
 <script setup lang="ts">
+import { ref, onMounted, watch, nextTick, computed } from 'vue'
 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 type { EChartsCoreOption } from 'echarts'
 
 const route = useRoute()
 const router = useRouter()
-const factor = route.params.factor as string
-const runId = route.query.run as string | undefined
+const period = ref<'1' | '5' | '10'>('1')
+const detail = ref<EvalDetail | null>(null)
+const error = ref('')
+const expandedExpr = ref(false)
+
+// Chart refs
+const monthlyChartEl = ref<HTMLDivElement>()
+const decileChartEl = ref<HTMLDivElement>()
+const { setOption: setMonthlyOption } = useChart(monthlyChartEl)
+const { setOption: setDecileOption } = useChart(decileChartEl)
+
+async function load() {
+  try {
+    error.value = ''
+    detail.value = await getEvalDetail(String(route.params.factor), route.query.run ? String(route.query.run) : undefined)
+  } catch (e) {
+    error.value = '因子不存在或无评估数据'
+    detail.value = null
+  }
+}
 
 function goBack() {
-  router.push('/factor/leaderboard')
+  router.back()
+}
+
+function goToNewFactor() {
+  router.push('/factor/new')
+}
+
+const currentMetrics = computed(() => {
+  if (!detail.value?.metrics) return null
+  const metrics = detail.value.metrics as Record<string, unknown>
+  return metrics[period.value] as Record<string, unknown> | null
+})
+
+function renderMonthlyChart() {
+  const metrics = currentMetrics.value
+  if (!metrics || !monthlyChartEl.value) return
+
+  const monthlyIc = metrics.monthly_ic as Array<{ month: string; ic: number }> | null
+  if (!monthlyIc || !monthlyIc.length) return
+
+  // Compute cumulative IC
+  let cumulative = 0
+  const cumulativeData = monthlyIc.map((p) => {
+    cumulative += p.ic
+    return cumulative
+  })
+
+  const months = monthlyIc.map((p) => p.month)
+  const icValues = monthlyIc.map((p) => p.ic)
+
+  const option: EChartsCoreOption = {
+    title: darkTitle('月度 IC 与累计 IC'),
+    tooltip: darkTooltip(),
+    grid: darkGrid(),
+    xAxis: {
+      type: 'category',
+      data: months,
+      ...darkAxis(),
+    },
+    yAxis: {
+      type: 'value',
+      name: 'IC',
+      ...darkAxis(),
+    },
+    series: [
+      {
+        type: 'bar',
+        name: '月度 IC',
+        data: icValues,
+        itemStyle: {
+          color: (params) => (params.data as number) >= 0 ? 'var(--up)' : 'var(--down)',
+        },
+      },
+      {
+        type: 'line',
+        name: '累计 IC',
+        data: cumulativeData,
+        showSymbol: false,
+        lineStyle: { color: BRAND, width: 1.8 },
+        itemStyle: { color: BRAND },
+      },
+    ],
+  }
+
+  setMonthlyOption(option)
+}
+
+function renderDecileChart() {
+  const metrics = currentMetrics.value
+  if (!metrics || !decileChartEl.value) return
+
+  const deciles = metrics.deciles as (number | null)[] | null
+  if (!deciles || !deciles.length) return
+
+  const labels = ['D1', 'D2', 'D3', 'D4', 'D5', 'D6', 'D7', 'D8', 'D9', 'D10']
+  const colors = deciles.map((val) => {
+    if (val === null) return 'var(--text-3)'
+    // Create gradient from --down (negative) to --up (positive)
+    // Normalize between -0.5% and 0.5% for color transition
+    const normalized = Math.max(-1, Math.min(1, val / 0.5))
+    if (normalized < 0) return 'var(--down)'
+    return 'var(--up)'
+  })
+
+  const option: EChartsCoreOption = {
+    title: darkTitle('十分组年化收益'),
+    tooltip: darkTooltip(),
+    grid: darkGrid(),
+    xAxis: {
+      type: 'category',
+      data: labels,
+      ...darkAxis(),
+    },
+    yAxis: {
+      type: 'value',
+      name: '年化收益',
+      ...darkAxis(),
+    },
+    series: [
+      {
+        type: 'bar',
+        name: '年化收益',
+        data: deciles.map((val, i) => ({
+          value: val,
+          itemStyle: { color: colors[i] },
+        })),
+      },
+    ],
+  }
+
+  setDecileOption(option)
+}
+
+function renderCharts() {
+  renderMonthlyChart()
+  renderDecileChart()
+}
+
+function toggleExpr() {
+  expandedExpr.value = !expandedExpr.value
+}
+
+onMounted(load)
+
+watch(
+  () => [detail.value, period.value],
+  async () => {
+    if (!detail.value) return
+    await nextTick()
+    renderCharts()
+  },
+  { deep: true }
+)
+
+// Computed helpers
+const conclusionLabel = computed(() => {
+  const map: Record<string, string> = {
+    effective: '有效',
+    watch: '观察',
+    eliminated: '淘汰',
+  }
+  if (!currentMetrics.value) return ''
+  const conclusion = (currentMetrics.value as Record<string, unknown>).conclusion as string | undefined
+  return conclusion ? map[conclusion] || conclusion : ''
+})
+
+const conclusionClass = computed(() => {
+  if (!currentMetrics.value) return ''
+  const conclusion = (currentMetrics.value as Record<string, unknown>).conclusion as string | undefined
+  return conclusion ? `st-${conclusion}` : ''
+})
+
+const conclusionColor = computed(() => {
+  const map: Record<string, string> = {
+    effective: 'var(--lamp-ok)',
+    watch: 'var(--lamp-warn)',
+    eliminated: 'var(--lamp-idle)',
+  }
+  if (!currentMetrics.value) return ''
+  const conclusion = (currentMetrics.value as Record<string, unknown>).conclusion as string | undefined
+  return conclusion ? map[conclusion] || '' : ''
+})
+
+const categoryClass = computed(() => {
+  if (!detail.value) return ''
+  const map: Record<string, string> = {
+    alpha101: 'cat-alpha101',
+    alpha158: 'cat-alpha158',
+    builtin: 'cat-builtin',
+  }
+  return map[detail.value.category] || 'cat-builtin'
+})
+
+// Formatting helpers
+function num(val: number | null | undefined, digits = 3): string {
+  if (val == null) return '—'
+  return val.toFixed(digits)
+}
+
+function pct(val: number | null | undefined): string {
+  if (val == null) return '—'
+  const sign = val >= 0 ? '+' : ''
+  return `${sign}${(val * 100).toFixed(1)}%`
 }
 </script>
 
 <template>
   <div class="detail-page">
     <a class="backlink" href="#" @click.prevent="goBack">← 返回排行榜</a>
-    <div class="page-head">
-      <div>
-        <h1 class="page-title">因子详情 · {{ factor }}</h1>
-        <p class="page-sub">批次 {{ runId || '最新' }}</p>
+
+    <div v-if="error" class="error-state">
+      <p>{{ error }}</p>
+      <a class="backlink" href="#" @click.prevent="goBack">返回排行榜</a>
+    </div>
+
+    <template v-else-if="detail">
+      <!-- Page Header -->
+      <div class="page-head">
+        <div>
+          <h1 class="page-title">因子详情 · {{ detail.factor }}</h1>
+          <p class="page-sub">批次 {{ route.query.run || '最新' }}</p>
+        </div>
       </div>
-    </div>
-    <div class="placeholder">
-      <p>因子详情页待实现（Task 11）</p>
-    </div>
+
+      <!-- Factor Card -->
+      <div class="fcard">
+        <div class="hd">
+          <span class="name">{{ detail.factor }}</span>
+          <span :class="['cat-chip', categoryClass]">{{ detail.category }}</span>
+          <span v-if="conclusionLabel" :class="['st', conclusionClass]">
+            <span class="lamp" :style="{ background: conclusionColor, boxShadow: conclusionColor !== 'var(--lamp-idle)' ? `0 0 6px ${conclusionColor}` : 'none' }"></span>
+            {{ conclusionLabel }}
+          </span>
+        </div>
+        <div class="expr" :class="{ expanded: expandedExpr }">
+          <span class="expr-text">{{ detail.expression }}</span>
+          <button v-if="detail.expression && detail.expression.length > 100" class="expr-toggle" @click="toggleExpr">
+            {{ expandedExpr ? '收起' : '展开全文' }}
+          </button>
+        </div>
+      </div>
+
+      <!-- Metrics Strip -->
+      <div v-if="currentMetrics" class="metric-strip">
+        <div class="metric">
+          <div class="k">IC 均值 ({{ period }}D)</div>
+          <div class="v" :class="(currentMetrics.ic_mean as number) >= 0 ? 'pos' : 'neg'">{{ num(currentMetrics.ic_mean as number) }}</div>
+        </div>
+        <div class="metric">
+          <div class="k">ICIR</div>
+          <div class="v" :class="(currentMetrics.icir as number) >= 0 ? 'pos' : 'neg'">{{ num(currentMetrics.icir as number, 2) }}</div>
+        </div>
+        <div class="metric">
+          <div class="k">t 值</div>
+          <div class="v" :class="(currentMetrics.t_stat as number) >= 0 ? 'pos' : 'neg'">{{ num(currentMetrics.t_stat as number, 1) }}</div>
+        </div>
+        <div class="metric">
+          <div class="k">IC 胜率</div>
+          <div class="v" :class="(currentMetrics.win_rate as number) >= 0 ? 'pos' : 'neg'">{{ pct(currentMetrics.win_rate as number) }}</div>
+        </div>
+        <div class="metric">
+          <div class="k">多空年化</div>
+          <div class="v" :class="(currentMetrics.ls_annual as number) >= 0 ? 'pos' : 'neg'">{{ pct(currentMetrics.ls_annual as number) }}</div>
+        </div>
+        <div class="metric">
+          <div class="k">日均换手</div>
+          <div class="v" style="color: var(--text-2)">{{ pct(currentMetrics.turnover as number) }}</div>
+          <div class="d">参评 {{ currentMetrics.count }} 日</div>
+        </div>
+      </div>
+
+      <!-- Period Switcher -->
+      <div class="period-switch">
+        <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>
+
+      <!-- Charts -->
+      <div class="charts">
+        <div class="chart-card">
+          <h3>月度 IC 与累计 IC</h3>
+          <div class="cs">柱=月度 RankIC · 线=累计 IC</div>
+          <div ref="monthlyChartEl" class="chart-box"></div>
+        </div>
+        <div class="chart-card">
+          <h3>十分组年化收益 ({{ period }}D)</h3>
+          <div class="cs">Q1=因子值最低组 · 单调性=区分度</div>
+          <div ref="decileChartEl" class="chart-box"></div>
+        </div>
+      </div>
+
+      <!-- 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>
+      </div>
+    </template>
   </div>
 </template>
 
@@ -47,6 +332,15 @@ function goBack() {
   text-underline-offset: 3px;
 }
 
+.error-state {
+  padding: 60px;
+  text-align: center;
+  color: var(--text-3);
+  background: var(--bg-card);
+  border: 1px solid var(--border);
+  border-radius: var(--r-lg);
+}
+
 .page-head {
   display: flex;
   align-items: flex-end;
@@ -71,12 +365,282 @@ function goBack() {
   letter-spacing: 0.02em;
 }
 
-.placeholder {
-  padding: 60px;
-  text-align: center;
-  color: var(--text-3);
+.fcard {
   background: var(--bg-card);
   border: 1px solid var(--border);
   border-radius: var(--r-lg);
+  padding: 16px 18px;
+  margin-bottom: var(--sp-3);
+}
+
+.fcard .hd {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  margin-bottom: 10px;
+  flex-wrap: wrap;
+}
+
+.fcard .name {
+  font-family: var(--mono);
+  font-size: 17px;
+  font-weight: 700;
+  color: var(--brand);
+  letter-spacing: 0.03em;
+}
+
+.expr {
+  font-family: var(--mono);
+  font-size: 11.5px;
+  line-height: 1.7;
+  background: var(--panel);
+  border: 1px solid var(--border-2);
+  border-left: 2px solid var(--cyan-dim);
+  border-radius: var(--r-sm);
+  padding: 11px 14px;
+  color: var(--text-2);
+  overflow-x: auto;
+  white-space: pre;
+  position: relative;
+}
+
+.expr:not(.expanded) {
+  max-height: 80px;
+  overflow: hidden;
+  mask-image: linear-gradient(to bottom, black 60%, transparent 100%);
+  -webkit-mask-image: linear-gradient(to bottom, black 60%, transparent 100%);
+}
+
+.expr.expanded {
+  mask-image: none;
+  -webkit-mask-image: none;
+}
+
+.expr-toggle {
+  position: absolute;
+  bottom: 8px;
+  right: 12px;
+  font-size: 10px;
+  color: var(--brand);
+  background: rgba(0, 229, 255, 0.1);
+  border: 1px solid rgba(0, 229, 255, 0.3);
+  border-radius: var(--r-sm);
+  padding: 2px 8px;
+  cursor: pointer;
+  transition: all 0.15s var(--ease);
+}
+
+.expr-toggle:hover {
+  background: rgba(0, 229, 255, 0.2);
+}
+
+.metric-strip {
+  display: grid;
+  grid-template-columns: repeat(6, 1fr);
+  gap: 1px;
+  background: var(--border);
+  border: 1px solid var(--border);
+  border-radius: var(--r-lg);
+  overflow: hidden;
+  margin-bottom: var(--sp-3);
+}
+
+@media (max-width: 1100px) {
+  .metric-strip {
+    grid-template-columns: repeat(3, 1fr);
+  }
+}
+
+.metric {
+  background: var(--bg-card);
+  padding: 11px 13px;
+}
+
+.metric .k {
+  color: var(--text-3);
+  font-family: var(--mono);
+  font-size: 9.5px;
+  letter-spacing: 0.12em;
+  text-transform: uppercase;
+}
+
+.metric .v {
+  font-family: var(--mono);
+  font-variant-numeric: tabular-nums;
+  font-size: 18px;
+  font-weight: 600;
+  margin-top: 2px;
+}
+
+.metric .d {
+  font-size: 10px;
+  margin-top: 2px;
+  color: var(--text-3);
+  font-family: var(--mono);
+}
+
+.period-switch {
+  display: flex;
+  border: 1px solid var(--border);
+  border-radius: var(--r-sm);
+  overflow: hidden;
+  margin-bottom: var(--sp-3);
+}
+
+.period-switch button {
+  font-family: var(--mono);
+  font-size: 11px;
+  padding: 4px 12px;
+  color: var(--text-2);
+  background: transparent;
+  border: none;
+  cursor: pointer;
+}
+
+.period-switch button.on {
+  background: rgba(0, 229, 255, 0.12);
+  color: var(--brand);
+}
+
+.charts {
+  display: grid;
+  grid-template-columns: 3fr 2fr;
+  gap: var(--sp-3);
+  margin-bottom: var(--sp-3);
+}
+
+@media (max-width: 1100px) {
+  .charts {
+    grid-template-columns: 1fr;
+  }
+}
+
+.chart-card {
+  background: var(--bg-card);
+  border: 1px solid var(--border);
+  border-radius: var(--r-lg);
+  padding: 14px 16px;
+}
+
+.chart-card h3 {
+  font-size: 12.5px;
+  font-weight: 600;
+  letter-spacing: 0.04em;
+  margin-bottom: 4px;
+}
+
+.chart-card .cs {
+  color: var(--text-3);
+  font-family: var(--mono);
+  font-size: 10.5px;
+  margin-bottom: 10px;
+}
+
+.chart-box {
+  width: 100%;
+  height: 215px;
+}
+
+.actions {
+  display: flex;
+  gap: 10px;
+}
+
+.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;
+}
+
+.btn:hover {
+  color: var(--text);
+  border-color: var(--text-3);
+}
+
+.btn.primary {
+  color: var(--text);
+  background: var(--brand);
+  border-color: var(--brand);
+  box-shadow: var(--glow-cyan);
+}
+
+.btn.primary:hover {
+  background: var(--cyan-dim);
+}
+
+.cat-chip {
+  display: inline-block;
+  padding: 1px 8px;
+  border-radius: var(--r-sm);
+  font-family: var(--mono);
+  font-size: 10.5px;
+  font-weight: 600;
+  line-height: 17px;
+  letter-spacing: 0.3px;
+  border: 1px solid transparent;
+}
+
+.cat-alpha101 {
+  color: var(--brand);
+  background: rgba(0, 229, 255, 0.1);
+  border-color: rgba(0, 229, 255, 0.3);
+}
+
+.cat-alpha158 {
+  color: var(--purple-dim);
+  background: rgba(180, 140, 255, 0.1);
+  border-color: rgba(180, 140, 255, 0.3);
+}
+
+.cat-builtin {
+  color: var(--amber);
+  background: rgba(255, 176, 0, 0.1);
+  border-color: rgba(255, 176, 0, 0.3);
+}
+
+.st {
+  display: inline-flex;
+  align-items: center;
+  gap: 5px;
+  font-family: var(--mono);
+  font-size: 10.5px;
+  letter-spacing: 0.08em;
+}
+
+.st-ok .lamp {
+  background: var(--lamp-ok);
+  box-shadow: 0 0 6px rgba(46, 230, 138, 0.7);
+}
+
+.st-watch .lamp {
+  background: var(--lamp-warn);
+  box-shadow: 0 0 6px rgba(255, 176, 0, 0.7);
+}
+
+.st-eliminated .lamp {
+  background: var(--lamp-idle);
+  box-shadow: none;
+}
+
+.lamp {
+  width: 7px;
+  height: 7px;
+  border-radius: 50%;
+  display: inline-block;
+  flex-shrink: 0;
+}
+
+.pos {
+  color: var(--up);
+}
+
+.neg {
+  color: var(--down);
 }
 </style>