document.addEventListener('DOMContentLoaded', function() {
    // 市场趋势图表
    const marketTrendChart = echarts.init(document.getElementById('marketTrendChart'));
    marketTrendChart.setOption({
        title: {
            text: '数据要素市场规模趋势',
            left: 'center'
        },
        tooltip: {
            trigger: 'axis',
            axisPointer: {
                type: 'shadow'
            }
        },
        legend: {
            bottom: '5%'
        },
        grid: {
            left: '3%',
            right: '4%',
            bottom: '15%',
            top: '15%',
            containLabel: true
        },
        xAxis: {
            type: 'category',
            data: ['2020', '2021', '2022', '2023', '2024E']
        },
        yAxis: {
            type: 'value',
            name: '亿元'
        },
        series: [
            {
                name: '数据交易规模',
                type: 'bar',
                data: [200, 400, 600, 800, 1000],
                itemStyle: {
                    color: '#0d6efd'
                }
            },
            {
                name: '数据融资规模',
                type: 'line',
                data: [2, 4, 6, 8, 10],
                itemStyle: {
                    color: '#198754'
                }
            }
        ]
    });

    // 监听窗口大小变化
    window.addEventListener('resize', function() {
        marketTrendChart.resize();
    });
});