* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: #f5f7fa;
            color: #333;
            line-height: 1.6;
            padding: 20px;
            max-width: 1000px;
            margin: 0 auto;
        }
        
        .container {
            background: white;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            overflow: hidden;
            margin-bottom: 30px;
        }
        
        header {
            background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
            color: white;
            padding: 30px 20px;
            text-align: center;
        }
        
        h1 {
            font-size: 2.2rem;
            margin-bottom: 10px;
        }
        
        .subtitle {
            font-size: 1.1rem;
            opacity: 0.9;
            margin-top: 10px;
        }
        
        .content {
            padding: 30px;
        }
        
        .step-box {
            background: #f9f9ff;
            border-left: 4px solid #6a11cb;
            padding: 20px;
            margin-bottom: 25px;
            border-radius: 0 8px 8px 0;
            position: relative;
        }
        
        .step-number {
            position: absolute;
            top: -15px;
            left: -15px;
            background: #6a11cb;
            color: white;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 1.2rem;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        }
        
        h2 {
            color: #2d3a80;
            margin: 10px 0 15px;
            font-size: 1.5rem;
        }
        
        .important-note {
            background: #fff4e6;
            border-left: 4px solid #ff9c2a;
            padding: 15px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }
        
        .code {
            background: #2d3a80;
            color: #fff;
            padding: 12px;
            border-radius: 6px;
            margin: 15px 0;
            font-family: monospace;
            overflow-x: auto;
        }
        
        .tips {
            background: #e6f7ff;
            border-left: 4px solid #1890ff;
            padding: 15px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }
        
        footer {
            text-align: center;
            padding: 20px;
            color: #777;
            font-size: 0.9rem;
            margin-top: 30px;
        }
        
        ul, ol {
            padding-left: 20px;
            margin: 15px 0;
        }
        
        li {
            margin-bottom: 8px;
        }
        
        @media (max-width: 768px) {
            body {
                padding: 10px;
            }
            
            .content {
                padding: 20px;
            }
            
            h1 {
                font-size: 1.8rem;
            }
        }