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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f1f8e9 0%, #e8f5e8 50%, #dcedc8 100%);
    min-height: 100vh;
    color: #333;
}

.header {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, #66bb6a 0%, #4caf50 50%, #ffeb3b 100%);
    color: white;
    margin-bottom: 30px;
    box-shadow: 0 4px 15px rgba(102, 187, 106, 0.3);
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 25px;
    padding: 0 20px 40px;
    max-width: 1800px;
    margin: 0 auto;
}

.chart-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 8px 25px rgba(102, 187, 106, 0.15);
    transition: all 0.3s ease;
    border: 1px solid #c5e1a5;
}

.chart-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(255, 235, 59, 0.25);
}

.chart-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: #388e3c;
    margin-bottom: 20px;
    text-align: center;
    border-bottom: 2px solid #fff59d;
    padding-bottom: 10px;
}

.chart-container {
    width: 100%;
    height: 400px;
    transition: all 0.3s ease;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .container {
        grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    }
}

@media (max-width: 768px) {
    .container {
        grid-template-columns: 1fr;
        padding: 0 15px 30px;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .chart-container {
        height: 350px;
    }
}

/* 加载动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chart-card {
    animation: fadeInUp 0.6s ease forwards;
}

.chart-card:nth-child(1) { animation-delay: 0.1s; }
.chart-card:nth-child(2) { animation-delay: 0.2s; }
.chart-card:nth-child(3) { animation-delay: 0.3s; }
.chart-card:nth-child(4) { animation-delay: 0.4s; }
.chart-card:nth-child(5) { animation-delay: 0.5s; }
.chart-card:nth-child(6) { animation-delay: 0.6s; }
.chart-card:nth-child(7) { animation-delay: 0.7s; }
.chart-card:nth-child(8) { animation-delay: 0.8s; }
.chart-card:nth-child(9) { animation-delay: 0.9s; }
.chart-card:nth-child(10) { animation-delay: 1.0s; }

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #00b4d8 0%, #0096c7 100%);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #0096c7 0%, #0077b6 100%);
}