修复统计图

src/components/StatsChart.astro

@@ -104,7 +104,7 @@ const labelStep = Math.max(1, Math.ceil(linePoints.length / 6));
     </div>
   ) : (
     <div class="line-chart-wrap">
-      <svg class="line-chart" viewBox={`0 0 ${lineWidth} ${lineHeight}`} role="img" aria-label={title} preserveAspectRatio="none">
+      <svg class="line-chart" viewBox={`0 0 ${lineWidth} ${lineHeight}`} role="img" aria-label={title} preserveAspectRatio="xMidYMid meet">
         <line class="line-chart-axis" x1={padding.left} y1={padding.top + plotHeight} x2={padding.left + plotWidth} y2={padding.top + plotHeight}></line>
         <line class="line-chart-axis" x1={padding.left} y1={padding.top} x2={padding.left} y2={padding.top + plotHeight}></line>
         {[0, 0.5, 1].map((ratio) => (