fix(HEL-210): 情绪周期左右栏 flex 等高并修正夜间图表提示对比度

网格改为 stretch 对齐，图表区随右栏 flex 伸缩；夜间 tooltip 改用 surface 主题变量。

Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: multica-agent <github@multica.ai>

frontend/pages/sentiment/foundation.css

@@ -1021,9 +1021,21 @@
 }
 
 .sentiment-chart-tooltip b {
+  color: inherit;
+
   font-weight: 700;
 }
 
+:root[data-theme="dark"] #sentimentCycleView .sentiment-chart-tooltip {
+  border: 1px solid var(--border-strong);
+
+  background: var(--surface-muted);
+
+  color: var(--text-primary);
+
+  box-shadow: var(--elevation-float);
+}
+
 .sentiment-phase-block {
   display: flex;
 
@@ -1431,7 +1443,7 @@
 
   grid-template-columns: minmax(0px, 1fr) 340px;
 
-  align-items: start;
+  align-items: stretch;
 }
 
 .redesigned-sentiment-view .sentiment-analysis-main,
@@ -1450,13 +1462,13 @@
 
   padding-bottom: 6px;
 
-  height: 350px;
+  min-height: 280px;
 
   padding-top: 12px;
 }
 
 .redesigned-sentiment-view .sentiment-chart-shell canvas {
-  height: 332px;
+  min-height: 240px;
 }
 
 @media (max-width: 960px) {
@@ -1476,7 +1488,7 @@
 
   gap: 12px;
 
-  align-items: start;
+  align-items: stretch;
 
   margin-bottom: 12px;
 }
@@ -1666,11 +1678,50 @@
 }
 
 @media (min-width: 768px) {
+  .redesigned-sentiment-view .sentiment-analysis-main,
+  .redesigned-sentiment-view .sentiment-analysis-rail {
+    align-self: stretch;
+
+    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: 280px;
+
     padding-right: 16px;
 
     padding-left: 16px;
   }
+
+  .redesigned-sentiment-view .sentiment-chart-shell canvas {
+    height: 100%;
+
+    min-height: 240px;
+  }
+
+  .redesigned-sentiment-view .sentiment-components-panel {
+    display: flex;
+
+    flex: 1 1 auto;
+
+    flex-direction: column;
+
+    min-height: 0px;
+  }
 }
 
 @media (min-width: 1024px) {

frontend/pages/sentiment/page.js

@@ -1,10 +1,21 @@
 let sentimentChartAnimationFrame = null;
+let sentimentChartResizeObserver = null;
 
 window.XiaobaiPageModules.register("sentiment", ["sentimentCycleView"], {
   bind: bindSentimentEvents,
   enter: ["loadSentiment"],
 });
 
+function ensureSentimentChartResizeObserver() {
+  const shell = document.querySelector("#sentimentCycleView .sentiment-chart-shell");
+  if (!shell || sentimentChartResizeObserver) return;
+  sentimentChartResizeObserver = new ResizeObserver(() => {
+    if (state.activeView !== "sentimentCycleView" || !state.sentimentHistory?.rows?.length) return;
+    drawSentimentTrendChart(state.sentimentHistory.rows, 1);
+  });
+  sentimentChartResizeObserver.observe(shell);
+}
+
 async function loadSentimentHistory(force = false) {
   if (!state.dashboard || state.sentimentLoading) return;
   const key = `${elements.tradeDate.value}:${state.sentimentRange}`;
@@ -107,6 +118,7 @@ function renderSentimentHistory() {
     animateSentimentComponents();
     animateSentimentTrendChart(rows);
     bindSentimentChartTooltip(rows);
+    ensureSentimentChartResizeObserver();
   });
   animateRows(body);
 }