* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: "Microsoft YaHei", "Segoe UI", sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
            padding: 20px;
        }
        
        .container {
            max-width: 900px;
            margin: 0 auto;
            background-color: white;
            border-radius: 10px;
            box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
            padding: 30px;
        }
        
        header {
            text-align: center;
            margin-bottom: 30px;
            border-bottom: 2px solid #e9ecef;
            padding-bottom: 20px;
        }
        
        h1 {
            color: #2c3e50;
            margin-bottom: 10px;
            font-size: 28px;
        }
        
        .subtitle {
            color: #6c757d;
            font-size: 16px;
        }
        
        .scope {
            background-color: #e9f7fe;
            border-left: 4px solid #3498db;
            padding: 15px;
            margin-bottom: 25px;
            border-radius: 0 5px 5px 0;
        }
        
        h2 {
            color: #2c3e50;
            margin: 25px 0 15px;
            padding-bottom: 8px;
            border-bottom: 1px solid #eaeaea;
            font-size: 22px;
        }
        
        h3 {
            color: #3498db;
            margin: 20px 0 10px;
            font-size: 18px;
        }

        footer {
            background-color: transparent;
            color: #888;
            text-align: center;
            padding: 20px;
            font-size: 14px;
            margin-top: auto;
        }
        
        footer a {
            color: #888;
            text-decoration: none;
            background-color: transparent;
            transition: color 0.3s ease;
        }
        
        footer a:hover {
            color: #555;
        }
        
        footer p {
            margin-top: 8px;
        }
        
        .rule-content {
            margin-bottom: 20px;
        }
        
        .definition, .penalty {
            margin-bottom: 15px;
        }
        
        .definition-title, .penalty-title {
            font-weight: bold;
            color: #2c3e50;
            margin-bottom: 8px;
        }
        
        ul {
            padding-left: 20px;
            margin-bottom: 15px;
        }
        
        li {
            margin-bottom: 5px;
        }
        
        .level {
            margin-top: 15px;
        }
        
        .level-title {
            font-weight: bold;
            color: #e74c3c;
            margin-bottom: 5px;
        }
        
        .level-description {
            margin-bottom: 10px;
        }
        
        .warning {
            background-color: #fff3cd;
            border-left: 4px solid #ffc107;
            padding: 12px;
            margin: 15px 0;
            border-radius: 0 5px 5px 0;
        }
        
        .process {
            background-color: #f8f9fa;
            padding: 15px;
            border-radius: 5px;
            margin: 15px 0;
        }
        
        .process-step {
            margin-bottom: 10px;
            counter-increment: step-counter;
        }
        
        .process-step:before {
            content: counter(step-counter);
            background-color: #3498db;
            color: white;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-right: 10px;
            font-size: 14px;
        }
        
        .principle {
            background-color: #e8f5e9;
            border-left: 4px solid #4caf50;
            padding: 12px;
            margin: 15px 0;
            border-radius: 0 5px 5px 0;
        }
        
        @media (max-width: 768px) {
            .container {
                padding: 15px;
            }
            
            h1 {
                font-size: 24px;
            }
            
            h2 {
                font-size: 20px;
            }
        }