diff --git a/frontend/pages/sentiment/foundation.css b/frontend/pages/sentiment/foundation.css
index 6accf89..8300c5d 100644
--- a/frontend/pages/sentiment/foundation.css
+++ b/frontend/pages/sentiment/foundation.css
@@ -1011,9 +1011,9 @@
 
   border-radius: 6px;
 
-  background: var(--r2-ink);
+  background: var(--sentiment-tooltip-bg);
 
-  color: var(--text-inverse);
+  color: var(--sentiment-tooltip-fg);
 
   font-size: 11px;
 
@@ -1021,6 +1021,8 @@
 }
 
 .sentiment-chart-tooltip b {
+  color: inherit;
+
   font-weight: 700;
 }
 
@@ -1568,10 +1570,6 @@
   #sentimentCycleView .sentiment-component-item {
     padding: 4px 0px;
   }
-
-  #sentimentCycleView .sentiment-component-item small {
-    display: none;
-  }
 }
 
 @media (min-width: 768px) {
@@ -1764,3 +1762,72 @@
     grid-template-columns: repeat(2, minmax(0, 1fr));
   }
 }
+
+@media (min-width: 1024px) {
+  #sentimentCycleView .redesigned-emotion-grid {
+    align-items: stretch;
+
+    height: var(--sentiment-analysis-height);
+
+    max-height: var(--sentiment-analysis-height);
+
+    overflow: hidden;
+  }
+
+  .redesigned-sentiment-view .sentiment-analysis-main,
+  .redesigned-sentiment-view .sentiment-analysis-rail {
+    align-self: stretch;
+
+    height: 100%;
+
+    min-height: 0px;
+  }
+
+  .redesigned-sentiment-view .sentiment-trend-panel {
+    display: flex;
+
+    flex: 1 1 auto;
+
+    flex-direction: column;
+
+    min-height: 0px;
+  }
+
+  .redesigned-sentiment-view .sentiment-chart-shell {
+    flex: 1 1 auto;
+
+    height: auto;
+
+    min-height: 0px;
+  }
+
+  .redesigned-sentiment-view .sentiment-chart-shell canvas {
+    height: 100%;
+  }
+
+  .redesigned-sentiment-view .sentiment-cycle-summary {
+    flex: 0 0 auto;
+  }
+
+  .redesigned-sentiment-view .sentiment-components-panel {
+    display: flex;
+
+    flex: 1 1 auto;
+
+    flex-direction: column;
+
+    min-height: 0px;
+  }
+
+  .redesigned-sentiment-view .sentiment-component-list {
+    display: flex;
+
+    flex: 1 1 auto;
+
+    flex-direction: column;
+
+    justify-content: space-evenly;
+
+    min-height: 0px;
+  }
+}
diff --git a/frontend/pages/sentiment/page.js b/frontend/pages/sentiment/page.js
index 135f5bb..d514b29 100644
--- a/frontend/pages/sentiment/page.js
+++ b/frontend/pages/sentiment/page.js
@@ -1,10 +1,39 @@
 let sentimentChartAnimationFrame = null;
+let sentimentChartResizeObserver = null;
+let sentimentChartLastSize = "";
 
 window.XiaobaiPageModules.register("sentiment", ["sentimentCycleView"], {
   bind: bindSentimentEvents,
   enter: ["loadSentiment"],
 });
 
+function sentimentChartSizeKey(target) {
+  if (!target) return "";
+  const rect = target.getBoundingClientRect();
+  return `${Math.round(rect.width)}x${Math.round(rect.height)}x${window.devicePixelRatio || 1}`;
+}
+
+function observeSentimentTrendChart() {
+  const shell = document.querySelector("#sentimentCycleView .sentiment-chart-shell");
+  if (!shell) return;
+  if (!sentimentChartResizeObserver) {
+    sentimentChartResizeObserver = new ResizeObserver(() => {
+      if (sentimentChartAnimationFrame) return;
+      if (state.activeView !== "sentimentCycleView") return;
+      const rows = state.sentimentHistory?.rows;
+      if (!rows?.length) return;
+      const current = document.querySelector("#sentimentCycleView .sentiment-chart-shell");
+      const nextKey = sentimentChartSizeKey(current);
+      if (!nextKey || nextKey === sentimentChartLastSize) return;
+      drawSentimentTrendChart(rows, 1);
+    });
+  } else {
+    sentimentChartResizeObserver.disconnect();
+  }
+  sentimentChartLastSize = sentimentChartSizeKey(shell);
+  sentimentChartResizeObserver.observe(shell);
+}
+
 async function loadSentimentHistory(force = false) {
   if (!state.dashboard || state.sentimentLoading) return;
   const key = `${elements.tradeDate.value}:${state.sentimentRange}`;
@@ -126,6 +155,7 @@ function animateSentimentTrendChart(rows) {
   if (sentimentChartAnimationFrame) cancelAnimationFrame(sentimentChartAnimationFrame);
   if (!motionEnabled()) {
     drawSentimentTrendChart(rows, 1);
+    observeSentimentTrendChart();
     return;
   }
   const startedAt = performance.now();
@@ -135,7 +165,10 @@ function animateSentimentTrendChart(rows) {
     const progress = 1 - (1 - rawProgress) ** 3;
     drawSentimentTrendChart(rows, progress);
     if (rawProgress < 1) sentimentChartAnimationFrame = requestAnimationFrame(frame);
-    else sentimentChartAnimationFrame = null;
+    else {
+      sentimentChartAnimationFrame = null;
+      observeSentimentTrendChart();
+    }
   };
   sentimentChartAnimationFrame = requestAnimationFrame(frame);
 }
@@ -144,9 +177,9 @@ function drawSentimentTrendChart(rows, progress = 1) {
   const canvas = document.querySelector("#sentimentTrendChart");
   if (!canvas || !rows.length || state.activeView !== "sentimentCycleView") return;
   const rect = canvas.getBoundingClientRect();
-  if (!rect.width) return;
-  const width = Math.max(320, rect.width);
-  const height = Math.max(220, rect.height);
+  if (rect.width < 8 || rect.height < 8) return;
+  const width = rect.width;
+  const height = rect.height;
   const ratio = window.devicePixelRatio || 1;
   canvas.width = Math.round(width * ratio);
   canvas.height = Math.round(height * ratio);
@@ -258,6 +291,7 @@ function drawSentimentTrendChart(rows, progress = 1) {
     const dateText = displayCompactDate(row.trade_date).slice(5);
     context.fillText(dateText, x(index), height - padding.bottom + 10);
   });
+  sentimentChartLastSize = sentimentChartSizeKey(canvas.closest(".sentiment-chart-shell"));
 }
 
 function bindSentimentChartTooltip(rows) {
diff --git a/frontend/shared/tokens.css b/frontend/shared/tokens.css
index 5391ed9..e7c2b1f 100644
--- a/frontend/shared/tokens.css
+++ b/frontend/shared/tokens.css
@@ -210,6 +210,9 @@
   --pool-table-max-height: calc(var(--content-height) - var(--topbar-height) - var(--page-pad-y) - var(--page-pad-y) - var(--card-gap));
   --sentiment-history-max-height: 510px;
   --sentiment-history-min-height: 220px;
+  --sentiment-analysis-height: 600px;
+  --sentiment-tooltip-bg: var(--text-primary);
+  --sentiment-tooltip-fg: var(--text-inverse);
   --primary-share: 1.45fr;
   --secondary-share: .75fr;
   --mobile-nav-height: 64px;
@@ -505,6 +508,8 @@
   --chart-repair: #e2ad58;
   --chart-ma-10: #d39a45;
   --chart-ma-20: #9aa5af;
+  --sentiment-tooltip-bg: #26293e;
+  --sentiment-tooltip-fg: #e8eaed;
   --on-action: #101418;
   --warning-line: #6d5a38;
   --warning-line-strong: #66502d;
diff --git a/tests/e2e/app-shell.spec.js b/tests/e2e/app-shell.spec.js
index 9ceaa8b..3f049c9 100644
--- a/tests/e2e/app-shell.spec.js
+++ b/tests/e2e/app-shell.spec.js
@@ -47,6 +47,72 @@ function session(role = "admin", subscribed = true) {
   };
 }
 
+function sentimentHistoryPayload(days = 20) {
+  const phases = ["冰点", "修复", "发酵", "高潮", "分化", "退潮"];
+  const rows = Array.from({ length: days }, (_, index) => {
+    const score = 28 + ((index * 7) % 55);
+    return {
+      trade_date: `2026-08-${String(index + 1).padStart(2, "0")}`,
+      score,
+      label: "情绪观察",
+      phase: phases[index % phases.length],
+      direction: index % 2 ? "升温" : "降温",
+      day_change: index % 2 ? 3.2 : -2.1,
+      seal_rate: 71.5,
+      limit_up_count: 40 + index,
+      first_board_count: 18,
+      second_board_count: 8,
+      three_plus_count: 4,
+      max_height: 5,
+      broken_count: 12,
+      limit_down_count: 3,
+      previous_limit_count: 38,
+      previous_positive_count: 22,
+      previous_positive_rate: 57.9,
+      average_previous_change: 1.2,
+      normalization: "固定锚点",
+      components: {
+        breadth: { label: "市场宽度", score: 55.8, weight: 20, summary: "红盘家数回升" },
+        limit: { label: "涨停连板", score: 79.6, weight: 25, summary: "连板生态改善" },
+        profit: { label: "赚钱效应", score: 67.0, weight: 30, summary: "昨日反馈尚可" },
+        ladder: { label: "涨幅结构", score: 81.5, weight: 15, summary: "高度仍在扩张" },
+        amount: { label: "成交活跃度", score: 46.1, weight: 10, summary: "量能略低于均值" },
+      },
+    };
+  });
+  return { available_days: days, rows };
+}
+
+async function renderSentimentFixture(page, days = 20) {
+  await page.evaluate((payload) => {
+    state.sentimentHistory = payload;
+    renderSentimentHistory();
+  }, sentimentHistoryPayload(days));
+  await page.locator('[data-view="sentimentCycleView"]').first().click();
+  await page.waitForTimeout(900);
+}
+
+function readSentimentLayout() {
+  const analysis = document.querySelector(".redesigned-emotion-grid").getBoundingClientRect();
+  const trend = document.querySelector(".sentiment-trend-panel").getBoundingClientRect();
+  const summary = document.querySelector(".sentiment-cycle-summary").getBoundingClientRect();
+  const components = document.querySelector(".sentiment-components-panel").getBoundingClientRect();
+  const chart = document.querySelector(".sentiment-chart-shell").getBoundingClientRect();
+  const detail = document.querySelector(".sentiment-detail-toolbar").getBoundingClientRect();
+  const table = document.querySelector(".sentiment-history-frame").getBoundingClientRect();
+  const small = document.querySelector(".sentiment-component-item small");
+  return {
+    topDelta: Math.abs(trend.top - summary.top),
+    bottomDelta: Math.abs(trend.bottom - components.bottom),
+    analysisHeight: analysis.height,
+    chartHeight: chart.height,
+    detailAfterAnalysis: detail.top > Math.max(trend.bottom, components.bottom) - 0.5,
+    tableVisible: table.top < window.innerHeight && table.bottom > detail.bottom,
+    smallVisible: small ? getComputedStyle(small).display !== "none" : false,
+    overflowX: document.documentElement.scrollWidth > document.documentElement.clientWidth + 1,
+  };
+}
+
 function waitForApplicationRuntime(page) {
   return expect(page.locator("body")).toHaveAttribute("data-runtime-ready", "true");
 }
@@ -721,6 +787,7 @@ test("collapsed overview and sentiment layout keep a single current reading", as
   await expect(page.locator(".sentiment-stage-guide, [data-sentiment-stage]")).toHaveCount(0);
   await expect(page.locator("#sentimentPhaseAdvice")).toHaveText("情绪指标继续走弱。");
   const alignment = await page.evaluate(() => {
+    const analysis = document.querySelector(".redesigned-emotion-grid").getBoundingClientRect();
     const components = document.querySelector(".sentiment-components-panel").getBoundingClientRect();
     const trend = document.querySelector(".sentiment-trend-panel").getBoundingClientRect();
     const summary = document.querySelector(".sentiment-cycle-summary").getBoundingClientRect();
@@ -732,6 +799,8 @@ test("collapsed overview and sentiment layout keep a single current reading", as
     const statusStyle = getComputedStyle(document.querySelector(".sentiment-block .sentiment-text"));
     return {
       columnsAligned: Math.abs(trend.top - summary.top) < 1,
+      bottomsAligned: Math.abs(trend.bottom - components.bottom) < 1,
+      analysisHeight: analysis.height,
       railAligned: Math.abs(summary.x - components.x) < 1 && Math.abs(summary.width - components.width) < 1 && components.top > summary.bottom,
       detailAfterAnalysis: detail.top > Math.max(trend.bottom, components.bottom),
       chartHeight: chart.height,
@@ -743,6 +812,8 @@ test("collapsed overview and sentiment layout keep a single current reading", as
     };
   });
   expect(alignment.columnsAligned).toBe(true);
+  expect(alignment.bottomsAligned).toBe(true);
+  expect(Math.abs(alignment.analysisHeight - 600)).toBeLessThanOrEqual(1);
   expect(alignment.railAligned).toBe(true);
   expect(alignment.detailAfterAnalysis).toBe(true);
   expect(alignment.chartHeight).toBeGreaterThanOrEqual(340);
@@ -780,6 +851,68 @@ test("collapsed overview and sentiment layout keep a single current reading", as
   }
 });
 
+test("sentiment cycle keeps 600px equal-height layout across zoom viewports", async ({ page }, testInfo) => {
+  const shotDir = testInfo.outputPath("hel-221-shots");
+  await mockApplication(page, session("user", true));
+  const viewports = [
+    { name: "zoom-100", width: 2560, height: 1440 },
+    { name: "zoom-110", width: 2327, height: 1309 },
+    { name: "zoom-125", width: 2048, height: 1152 },
+  ];
+
+  for (const viewport of viewports) {
+    await page.setViewportSize({ width: viewport.width, height: viewport.height });
+    await page.goto("/index.html");
+    await renderSentimentFixture(page, 20);
+    const layout = await page.evaluate(readSentimentLayout);
+    expect(layout.topDelta, viewport.name).toBeLessThanOrEqual(1);
+    expect(layout.bottomDelta, viewport.name).toBeLessThanOrEqual(1);
+    expect(Math.abs(layout.analysisHeight - 600), viewport.name).toBeLessThanOrEqual(1);
+    expect(layout.chartHeight, viewport.name).toBeGreaterThanOrEqual(450);
+    expect(layout.detailAfterAnalysis, viewport.name).toBe(true);
+    expect(layout.tableVisible, viewport.name).toBe(true);
+    expect(layout.smallVisible, viewport.name).toBe(true);
+    expect(layout.overflowX, viewport.name).toBe(false);
+    await page.screenshot({
+      path: `${shotDir}/day-${viewport.name}.png`,
+      fullPage: true,
+    });
+  }
+
+  await page.setViewportSize({ width: 2560, height: 1440 });
+  await page.locator("#themeToggle").click();
+  await expect(page.locator("html")).toHaveAttribute("data-theme", "dark");
+  await page.waitForTimeout(200);
+  const nightLayout = await page.evaluate(readSentimentLayout);
+  expect(nightLayout.topDelta).toBeLessThanOrEqual(1);
+  expect(nightLayout.bottomDelta).toBeLessThanOrEqual(1);
+  expect(Math.abs(nightLayout.analysisHeight - 600)).toBeLessThanOrEqual(1);
+  await page.locator("#sentimentTrendChart").hover({ position: { x: 280, y: 120 } });
+  const tooltip = page.locator("#sentimentChartTooltip");
+  await expect(tooltip).toBeVisible();
+  await expect(tooltip).toContainText("温度");
+  const tooltipStyle = await tooltip.evaluate((node) => {
+    const style = getComputedStyle(node);
+    const bold = getComputedStyle(node.querySelector("b") || node);
+    return { background: style.backgroundColor, color: style.color, bold: bold.color };
+  });
+  expect(tooltipStyle.background).toBe("rgb(38, 41, 62)");
+  expect(tooltipStyle.color).toBe("rgb(232, 234, 237)");
+  expect(tooltipStyle.bold).toBe("rgb(232, 234, 237)");
+  await page.screenshot({ path: `${shotDir}/night-zoom-100.png`, fullPage: true });
+
+  await page.locator("#themeToggle").click();
+  await expect(page.locator("html")).toHaveAttribute("data-theme", "light");
+  await page.locator("#sentimentTrendChart").hover({ position: { x: 280, y: 120 } });
+  await expect(tooltip).toBeVisible();
+  const lightTooltip = await tooltip.evaluate((node) => {
+    const style = getComputedStyle(node);
+    return { background: style.backgroundColor, color: style.color };
+  });
+  expect(lightTooltip.background).toBe("rgb(31, 35, 41)");
+  expect(lightTooltip.color).toBe("rgb(255, 255, 255)");
+});
+
 test("limit-up pool separates stock identity and restores the reason column", async ({ page }) => {
   await mockApplication(page, session("user", true));
   await page.goto("/index.html");
diff --git a/tests/test_frontend_contract.py b/tests/test_frontend_contract.py
index ab8f0fd..e2657b7 100644
--- a/tests/test_frontend_contract.py
+++ b/tests/test_frontend_contract.py
@@ -344,6 +344,22 @@ class FrontendContractTests(unittest.TestCase):
         self.assertIn("max-height: var(--sentiment-history-max-height);", self.sentiment_styles)
         self.assertIn("overflow: auto;", self.sentiment_styles)
 
+    def test_sentiment_equal_height_and_tooltip_tokens(self):
+        self.assertIn("--sentiment-analysis-height: 600px;", self.tokens)
+        self.assertIn("--sentiment-tooltip-bg: var(--text-primary);", self.tokens)
+        self.assertIn("--sentiment-tooltip-fg: var(--text-inverse);", self.tokens)
+        self.assertIn("--sentiment-tooltip-bg: #26293e;", self.tokens)
+        self.assertIn("--sentiment-tooltip-fg: #e8eaed;", self.tokens)
+        self.assertIn("height: var(--sentiment-analysis-height);", self.sentiment_styles)
+        self.assertIn("max-height: var(--sentiment-analysis-height);", self.sentiment_styles)
+        self.assertIn("justify-content: space-evenly;", self.sentiment_styles)
+        self.assertIn("background: var(--sentiment-tooltip-bg);", self.sentiment_styles)
+        self.assertIn("color: var(--sentiment-tooltip-fg);", self.sentiment_styles)
+        self.assertIn("new ResizeObserver", self.script)
+        self.assertIn("#sentimentCycleView .redesigned-emotion-grid {", self.sentiment_styles)
+        self.assertNotIn("height: 100vh", self.sentiment_styles)
+        self.assertNotIn("min-height: 100%", self.sentiment_styles)
+
     def test_mentor_final_visual_fix_contract(self):
         shell_styles = (STATIC_DIR / "shared" / "shell.css").read_text(encoding="utf-8")
         mentor_html = (STATIC_DIR / "pages" / "mentor" / "page.html").read_text(encoding="utf-8")