.main-content {
    margin-left: 0;
    padding: 2rem;
}
.stats-main {
    padding: 2rem;
}

.stats-header h2 {
    font-size: 1.8rem;
    color: var(--primary-blue);
    margin-bottom: 0.3rem;
}

.stats-header p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.stats-cards {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.stat-card {
    background: white;
    flex: 1;
    min-width: 200px;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.2rem 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-icon {
    font-size: 2.2rem;
    color: var(--accent-blue);
    background: var(--light-gray);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.2rem;
    color: var(--primary-blue);
}

.stat-info p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* 图表区域 */
.charts-section {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.chart-card {
    flex: 1;
    min-width: 300px;
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.chart-card h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
}