feat(StatCard): 新增趋势指示器和多空进度条组件

- 新增 TrendIndicator 组件显示环比变化（箭头+百分比+标签）
- 新增 BullBearBar 组件显示红绿进度条
- 新增 WatermarkIcon 组件支持卡片水印背景
- 支持双色数值显示（如 121/79 红绿分色）
- StatCard 根据配置自动渲染趋势和进度条

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/components/HeroSection/HeroSection.tsx

@@ -52,29 +52,49 @@ export const HeroSection = memo<HeroSectionProps>(({
   return (
     <Box
       position="relative"
-      bgGradient={themeColors.bgGradient}
       color="white"
-      overflow="hidden"
       zIndex={1}
       mx={fullWidthMargin}
       borderRadius={fullWidth ? undefined : 'xl'}
-      borderBottom={`1px solid ${themeColors.borderColor}`}
       {...boxProps}
     >
-      {/* 背景装饰层 */}
+      {/* 背景容器 - 处理渐变和过渡 */}
-      <HeroBackground
+      <Box
-        decorations={decorations}
+        position="absolute"
-        themeColors={themeColors}
+        inset={0}
+        bgGradient={themeColors.bgGradient}
+        overflow="hidden"
+        zIndex={0}
+      >
+        {/* 背景装饰层 */}
+        <HeroBackground
+          decorations={decorations}
+          themeColors={themeColors}
+        />
+      </Box>
+
+      {/* 底部渐变过渡区域 - 创造纵深感 */}
+      <Box
+        position="absolute"
+        bottom={0}
+        left={0}
+        right={0}
+        h="80px"
+        bgGradient="linear(to-b, transparent, rgba(10, 10, 15, 0.8))"
+        pointerEvents="none"
+        zIndex={1}
       />
 
       {/* 主内容区 - 自适应高度，上下 padding 40px */}
       <Box
         px={{ base: 4, md: 6, lg: fullWidth ? '80px' : 6 }}
         py="40px"
+        pb="60px"
         display="flex"
         alignItems="center"
         justifyContent="center"
         position="relative"
+        zIndex={2}
       >
         {children ? (
           // 完全自定义内容

src/components/HeroSection/components/HeroStats/StatCard.tsx

@@ -1,5 +1,6 @@
 /**
  * StatCard 单个统计卡片
+ * 支持趋势变化显示和多空进度条
  */
 
 import React, { memo } from 'react';
@@ -12,15 +13,138 @@ import {
   Icon,
   Text,
   Skeleton,
+  Box,
+  Flex,
 } from '@chakra-ui/react';
-import type { StatCardProps } from '../../types';
+import { ArrowUp, ArrowDown, Minus } from 'lucide-react';
+import type { StatCardProps, TrendInfo, ProgressBarConfig, WatermarkIconConfig } from '../../types';
+
+/** 趋势指示器组件 */
+const TrendIndicator = memo<{ trend: TrendInfo }>(({ trend }) => {
+  const { direction, percent, label, compareText = '较昨日' } = trend;
+
+  // 根据方向确定颜色和图标
+  const colorMap = {
+    up: '#ff4d4d',
+    down: '#22c55e',
+    flat: 'gray.400',
+  };
+  const IconMap = {
+    up: ArrowUp,
+    down: ArrowDown,
+    flat: Minus,
+  };
+  const color = colorMap[direction];
+  const TrendIcon = IconMap[direction];
+
+  // 格式化百分比
+  const formattedPercent = direction === 'flat' ? '0%' : `${direction === 'up' ? '+' : ''}${percent.toFixed(1)}%`;
+
+  return (
+    <HStack spacing={1} justify="center" mt={1}>
+      <Icon as={TrendIcon} boxSize={3} color={color} />
+      <Text fontSize="xs" color={color} fontWeight="medium">
+        {formattedPercent}
+      </Text>
+      {label && (
+        <Text fontSize="xs" color={color} opacity={0.8}>
+          ({label})
+        </Text>
+      )}
+      <Text fontSize="xs" color="whiteAlpha.500">
+        {compareText}
+      </Text>
+    </HStack>
+  );
+});
+
+TrendIndicator.displayName = 'TrendIndicator';
+
+/** 多空进度条组件 */
+const BullBearBar = memo<{ config: ProgressBarConfig }>(({ config }) => {
+  const {
+    value,
+    total,
+    positiveColor = '#ff4d4d',
+    negativeColor = '#22c55e',
+    compareLabel,
+    compareValue,
+  } = config;
+
+  // 计算百分比
+  const sum = value + total;
+  const positivePercent = sum > 0 ? (value / sum) * 100 : 50;
+  const negativePercent = 100 - positivePercent;
+
+  return (
+    <VStack spacing={1} w="100%" mt={2}>
+      {/* 进度条 */}
+      <Box
+        w="100%"
+        h="6px"
+        borderRadius="full"
+        overflow="hidden"
+        bg="whiteAlpha.200"
+      >
+        <Flex h="100%">
+          <Box
+            w={`${positivePercent}%`}
+            bg={positiveColor}
+            borderRadius="full"
+            transition="width 0.3s ease"
+          />
+          <Box
+            w={`${negativePercent}%`}
+            bg={negativeColor}
+            borderRadius="full"
+            transition="width 0.3s ease"
+          />
+        </Flex>
+      </Box>
+      {/* 标签（仅当有 compareLabel 时显示） */}
+      {compareLabel && compareValue !== undefined && (
+        <Flex w="100%" justify="space-between" fontSize="xs">
+          <Text color={positiveColor} fontWeight="medium">
+            {value.toLocaleString()}
+          </Text>
+          <Text color={negativeColor} fontWeight="medium">
+            {compareLabel}: {compareValue.toLocaleString()}
+          </Text>
+        </Flex>
+      )}
+    </VStack>
+  );
+});
+
+BullBearBar.displayName = 'BullBearBar';
+
+/** 水印图标组件 */
+const WatermarkIcon = memo<{ config: WatermarkIconConfig }>(({ config }) => {
+  const { icon: WIcon, color = 'white', opacity = 0.08, size = 48 } = config;
+
+  return (
+    <Box
+      position="absolute"
+      top="50%"
+      right={3}
+      transform="translateY(-50%)"
+      opacity={opacity}
+      pointerEvents="none"
+      zIndex={0}
+    >
+      <Icon as={WIcon} boxSize={`${size}px`} color={color} />
+    </Box>
+  );
+});
+
+WatermarkIcon.displayName = 'WatermarkIcon';
 
 export const StatCard = memo<StatCardProps>(({
   item,
   themeColors,
   showIcon = false,
 }) => {
-  const { label, value, valueColor, icon, iconColor, suffix, isLoading } = item;
+  const { label, value, valueColor, icon, iconColor, suffix, isLoading, trend, progressBar, watermark } = item;
 
   // 格式化显示值
   const displayValue = (() => {
@@ -67,24 +191,50 @@ export const StatCard = memo<StatCardProps>(({
       borderRadius="md"
       border="1px solid"
       borderColor={themeColors.statCardBorder}
+      position="relative"
+      overflow="hidden"
     >
-      <StatLabel
+      {/* 水印背景图标 */}
-        color={themeColors.statLabelColor}
+      {watermark && <WatermarkIcon config={watermark} />}
-        fontWeight="medium"
+
-        fontSize="xs"
+      <Box position="relative" zIndex={1}>
-      >
+        <StatLabel
-        {label}
+          color={themeColors.statLabelColor}
-      </StatLabel>
+          fontWeight="medium"
-      {isLoading ? (
+          fontSize="xs"
-        <Skeleton height="24px" width="60px" mx="auto" mt={1} />
-      ) : (
-        <StatNumber
-          fontSize="lg"
-          color={valueColor || 'white'}
         >
-          {displayValue}
+          {label}
-        </StatNumber>
+        </StatLabel>
-      )}
+        {isLoading ? (
+          <Skeleton height="24px" width="60px" mx="auto" mt={1} />
+        ) : (
+          <>
+            {/* 多空对比特殊渲染：双色显示 */}
+            {progressBar && typeof value === 'string' && value.includes('/') ? (
+              <StatNumber fontSize="lg">
+                <Text as="span" color={progressBar.positiveColor || '#ff4d4d'}>
+                  {value.split('/')[0]}
+                </Text>
+                <Text as="span" color="whiteAlpha.500">/</Text>
+                <Text as="span" color={progressBar.negativeColor || '#22c55e'}>
+                  {value.split('/')[1]}
+                </Text>
+              </StatNumber>
+            ) : (
+              <StatNumber
+                fontSize="lg"
+                color={valueColor || 'white'}
+              >
+                {displayValue}
+              </StatNumber>
+            )}
+            {/* 趋势指示器 */}
+            {trend && <TrendIndicator trend={trend} />}
+            {/* 多空进度条 */}
+            {progressBar && <BullBearBar config={progressBar} />}
+          </>
+        )}
+      </Box>
     </Stat>
   );
 });