* {
            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: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.95);
            z-index: -1;
        }

        header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 2rem 1rem;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        .header-content {
            max-width: 1200px;
            margin: 0 auto;
        }

        h1 {
            font-size: 2.5rem;
            font-weight: 600;
            text-align: center;
            margin: 0;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
        }

        nav {
            background: #fff;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        nav ul {
            list-style: none;
            display: flex;
            justify-content: center;
            max-width: 1200px;
            margin: 0 auto;
            flex-wrap: wrap;
        }

        nav li {
            border-right: 1px solid #e0e0e0;
        }

        nav li:last-child {
            border-right: none;
        }

        nav a {
            display: block;
            padding: 1rem 2rem;
            color: #667eea;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
        }

        nav a:hover {
            background: #667eea;
            color: white;
        }

        main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 3rem 1rem;
        }

        article {
            background: white;
            padding: 2.5rem;
            margin-bottom: 2rem;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        }

        article h2 {
            color: #667eea;
            font-size: 2rem;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #764ba2;
        }

        article h3 {
            color: #764ba2;
            font-size: 1.5rem;
            margin-top: 1.5rem;
            margin-bottom: 0.75rem;
        }

        article h4 {
            color: #667eea;
            font-size: 1.25rem;
            margin-top: 1.25rem;
            margin-bottom: 0.5rem;
        }

        article p {
            margin-bottom: 1rem;
            font-size: 1.05rem;
            text-align: justify;
        }

        .transition-section {
            background: white;
            padding: 2.5rem;
            margin-bottom: 2rem;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        }

        .transition-section p {
            font-size: 1.05rem;
            margin-bottom: 1rem;
            text-align: justify;
        }

        .links-section {
            background: white;
            padding: 2.5rem;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        }

        .links-section h2 {
            color: #667eea;
            font-size: 2rem;
            margin-bottom: 2rem;
            text-align: center;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #764ba2;
        }

        .links-section h3 {
            color: #764ba2;
            font-size: 1.5rem;
            margin-top: 2rem;
            margin-bottom: 1rem;
        }

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 0.75rem 2rem;
            margin-bottom: 2rem;
        }

        .links-section li {
            padding-left: 1.5rem;
            position: relative;
        }

        .links-section li::before {
            content: '→';
            position: absolute;
            left: 0;
            color: #667eea;
            font-weight: bold;
        }

        .links-section a {
            color: #667eea;
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-block;
        }

        .links-section a:hover {
            color: #764ba2;
            transform: translateX(5px);
        }

        footer {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            text-align: center;
            padding: 2rem 1rem;
            margin-top: 3rem;
        }

        footer p {
            max-width: 1200px;
            margin: 0 auto;
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 1.75rem;
            }

            nav ul {
                flex-direction: column;
            }

            nav li {
                border-right: none;
                border-bottom: 1px solid #e0e0e0;
            }

            nav li:last-child {
                border-bottom: none;
            }

            nav a {
                padding: 0.75rem 1rem;
            }

            article, .transition-section, .links-section {
                padding: 1.5rem;
            }

            article h2 {
                font-size: 1.5rem;
            }

            article h3 {
                font-size: 1.25rem;
            }

            .links-section ul {
                grid-template-columns: 1fr;
                gap: 0.5rem;
            }

            main {
                padding: 2rem 1rem;
            }
        }

        @media (max-width: 480px) {
            h1 {
                font-size: 1.5rem;
            }

            article, .transition-section, .links-section {
                padding: 1rem;
            }

            header {
                padding: 1.5rem 1rem;
            }
        }