:root {
            --primary: #e3000f;
            --secondary: #000000;
            --accent: #f0f0f0;
            --background: #ffffff;
            --text: #212121;
            --gray: #757575;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Roboto', Arial, sans-serif;
        }
        
        body {
            color: var(--text);
            background-color: var(--background);
            line-height: 1.6;
            padding: 20px;
        }
        
        main {
            max-width: 800px;
            margin: 0 auto;
            padding: 40px 20px;
        }
        
        h1 {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 30px;
            text-align: center;
            text-transform: uppercase;
        }
        
        h2 {
            font-size: 1.8rem;
            color: var(--secondary);
            margin: 30px 0 15px;
        }
        
        h3 {
            font-size: 1.3rem;
            color: var(--secondary);
            margin: 20px 0 10px;
        }
        
        p, ul, ol {
            margin-bottom: 15px;
        }
        
        ul, ol {
            padding-left: 20px;
        }
        
        .last-update {
            font-style: italic;
            color: var(--gray);
            text-align: right;
            margin-bottom: 30px;
        }
        
        .geometric-pattern {
            background: repeating-linear-gradient(45deg, transparent, transparent 5px, var(--primary) 5px, var(--primary) 10px);
            height: 20px;
            width: 100%;
            margin: 30px 0;
        }
        
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
        }
        
        th, td {
            border: 1px solid #ddd;
            padding: 12px;
            text-align: left;
        }
        
        th {
            background-color: var(--accent);
        }
        
        tr:nth-child(even) {
            background-color: #f9f9f9;
        }