* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: -apple-system, 'Microsoft YaHei', 'Segoe UI', sans-serif;
            line-height: 1.8;
            color: #333;
            background: white;
            padding: 40px;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        /* 打印优化 */
        @media print {
            body {
                padding: 0;
                font-size: 12pt;
            }
            
            .page-break {
                page-break-after: always;
            }
            
            h1, h2, h3 {
                page-break-after: avoid;
            }
            
            table {
                page-break-inside: avoid;
            }
        }
        
        /* 标题样式 */
        h1 {
            color: #0066cc;
            font-size: 32px;
            margin-bottom: 20px;
            text-align: center;
            padding-bottom: 20px;
            border-bottom: 3px solid #0066cc;
        }
        
        h2 {
            color: #003C71;
            font-size: 24px;
            margin-top: 40px;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #e0e0e0;
        }
        
        h3 {
            color: #0066cc;
            font-size: 18px;
            margin-top: 30px;
            margin-bottom: 15px;
        }
        
        h4 {
            color: #333;
            font-size: 16px;
            margin-top: 20px;
            margin-bottom: 10px;
        }
        
        /* 元信息 */
        .meta-info {
            text-align: center;
            margin-bottom: 40px;
            color: #666;
        }
        
        .meta-info p {
            margin: 5px 0;
        }
        
        /* 摘要框 */
        .summary-box {
            background: #f5f7fa;
            border-left: 4px solid #0066cc;
            padding: 20px;
            margin: 30px 0;
            border-radius: 4px;
        }
        
        .key-findings {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-top: 20px;
        }
        
        .key-findings li {
            list-style: none;
            padding-left: 25px;
            position: relative;
        }
        
        .key-findings li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: #28a745;
            font-weight: bold;
            font-size: 18px;
        }
        
        /* 表格样式 */
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        }
        
        th {
            background: #0066cc;
            color: white;
            padding: 12px;
            text-align: left;
            font-weight: 600;
        }
        
        td {
            padding: 10px 12px;
            border-bottom: 1px solid #e0e0e0;
        }
        
        tr:nth-child(even) {
            background: #f8f9fa;
        }
        
        tr:hover {
            background: #e8f4fd;
        }
        
        /* 强调行 */
        tr.highlight {
            background: #fff3cd;
            font-weight: bold;
        }
        
        tr.highlight td {
            color: #0066cc;
        }
        
        /* 性能指标 */
        .performance-metric {
            display: inline-block;
            background: #28a745;
            color: white;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 14px;
            font-weight: bold;
        }
        
        .performance-metric.high {
            background: #0066cc;
        }
        
        /* 图表容器 */
        .chart-container {
            margin: 30px 0;
            padding: 20px;
            background: #f8f9fa;
            border-radius: 8px;
        }
        
        /* 页脚 */
        .footer {
            margin-top: 60px;
            padding-top: 30px;
            border-top: 2px solid #e0e0e0;
            text-align: center;
            color: #666;
            font-size: 14px;
        }
        
        /* 警告框 */
        .note {
            background: #e3f2fd;
            border-left: 4px solid #2196f3;
            padding: 15px;
            margin: 20px 0;
            border-radius: 4px;
        }
        
        .note strong {
            color: #1976d2;
        }
        .note ul {
            padding-left: 20px;
        }
        
        /* Logo */
        .logo {
            text-align: center;
            margin-bottom: 40px;
        }
        
        .logo-text {
            font-size: 36px;
            font-weight: bold;
            color: #333;
        }
        
        .logo-text span {
            color: #0066cc;
        }