/* 图表样式 */
.chart-section {
    background: #ffffff;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    width: 100%;
    box-sizing: border-box;
}

.chart-title {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
    color: #333;
}

.chart-container {
    position: relative;
    height: auto;
    width: 100%;
    min-height: 300px;
}

/* 响应式图表 */
@media (max-width: 768px) {
    .chart-section {
        padding: 1rem;
    }
    
    .chart-container {
        min-height: 250px;
    }
    
    .chart-title {
        font-size: 1.25rem;
        margin-bottom: 0.75rem;
    }
}

@media (max-width: 480px) {
    .chart-container {
        min-height: 200px;
    }
    
    .chart-section {
        padding: 0.75rem;
    }
    
    .chart-title {
        font-size: 1.1rem;
    }
}