* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background-color: #0f1c3c;
    color: #fff;
}

.container {
    width: 100%;
    max-width: 1920px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

header h1 {
    font-size: 36px;
    margin-bottom: 10px;
    color: #4db6ff;
    text-shadow: 0 0 10px rgba(77, 182, 255, 0.5);
}

header p {
    font-size: 18px;
    color: #a0c4ff;
}

.school-selector {
    text-align: center;
    margin-bottom: 30px;
}

.school-selector label {
    font-size: 18px;
    margin-right: 10px;
}

.school-selector select {
    padding: 8px 15px;
    font-size: 16px;
    border-radius: 5px;
    background-color: #1e3163;
    color: #fff;
    border: 1px solid #4db6ff;
    outline: none;
    min-width: 300px;
}

.charts-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    gap: 20px;
}

.chart {
    width: 100%;
    height: 400px;
    background-color: rgba(130, 250, 224, 0.7);
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.3);
    margin-bottom: 20px;
}

@media (min-width: 1200px) {
    .chart {
        width: calc(33.33% - 20px);
    }
}

@media (max-width: 1199px) and (min-width: 768px) {
    .chart {
        width: calc(50% - 20px);
    }
}