/* Base styles and reset */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
            padding: 20px;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        /* Article container */
        article {
            background: white;
            border-radius: 8px;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
            padding: 40px;
            margin: 30px auto;
        }
        
        /* Header styles */
        article header {
            text-align: center;
            margin-bottom: 40px;
            padding-bottom: 25px;
            border-bottom: 2px solid #f0f4f8;
        }
        
        h1 {
            font-size: 2.8rem;
            color: #1a3a5f;
            margin-bottom: 15px;
            line-height: 1.3;
        }
        
        article header p {
            font-size: 1.4rem;
            color: #4a6b8a;
            max-width: 800px;
            margin: 0 auto;
        }
        
        /* Section styles */
        section {
            margin-bottom: 35px;
            padding-bottom: 25px;
            border-bottom: 1px solid #eee;
        }
        
        section:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        
        h2 {
            font-size: 2.1rem;
            color: #2c5282;
            margin-bottom: 20px;
            padding-bottom: 8px;
            border-bottom: 2px solid #eaeff5;
        }
        
        h3 {
            font-size: 1.6rem;
            color: #3b6d9a;
            margin: 25px 0 15px 0;
        }
        
        /* Text content */
        p {
            margin-bottom: 18px;
            font-size: 1.1rem;
        }
        
        /* Lists */
        ul, ol {
            margin: 20px 0 25px 30px;
            font-size: 1.05rem;
        }
        
        li {
            margin-bottom: 10px;
            line-height: 1.7;
        }
        
        ul li::marker {
            color: #3b82f6;
            font-weight: bold;
        }
        
        ol li::marker {
            color: #1e40af;
            font-weight: bold;
        }
        
        strong {
            color: #1e3a8a;
            font-weight: 600;
        }
        
        /* Footer styles */
        article footer {
            margin-top: 30px;
            padding-top: 25px;
            border-top: 2px solid #f0f4f8;
            text-align: center;
        }
        
        article footer h2 {
            font-size: 2.1rem;
            color: #2c5282;
            margin-bottom: 20px;
            border-bottom: none;
            padding-bottom: 0;
        }
        
        article footer p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 15px;
        }
        
        em {
            font-style: italic;
            color: #1e40af;
            font-weight: 500;
        }
        
        /* Responsive adjustments */
        @media (max-width: 768px) {
            body {
                padding: 15px;
            }
            
            article {
                padding: 30px 25px;
                margin: 20px auto;
            }
            
            h1 {
                font-size: 2.3rem;
            }
            
            article header p {
                font-size: 1.25rem;
            }
            
            h2 {
                font-size: 1.8rem;
            }
            
            h3 {
                font-size: 1.45rem;
            }
            
            ul, ol {
                margin-left: 25px;
            }
        }
        
        @media (max-width: 480px) {
            article {
                padding: 25px 20px;
            }
            
            h1 {
                font-size: 2rem;
            }
            
            article header p {
                font-size: 1.15rem;
            }
            
            h2 {
                font-size: 1.65rem;
            }
            
            section {
                margin-bottom: 25px;
                padding-bottom: 20px;
            }
            
            ul, ol {
                margin-left: 20px;
            }
        }
nav{display:block;margin-top:60px;padding:12px 0;font-family:system-ui,-apple-system,Segoe UI,sans-serif;font-size:0.9rem;color:#888;text-align:center;letter-spacing:0.5px}nav::before{content:"— ⋅ — ⋅ —";display:block;margin-bottom:8px;color:#ccc;font-size:1.4rem;line-height:1}nav a{color:#666;text-decoration:none;margin:0 8px;position:relative}nav a:hover{color:#000}nav a:not(:last-child)::after{content:"•";margin-left:8px;color:#bbb}