* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f5f5f0;
        }

        header {
            background-color: #8b4513;
            padding: 2rem 1rem;
            text-align: center;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }

        header h1 {
            color: #fff;
            font-size: 2.5rem;
            font-weight: bold;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }

        nav {
            background-color: #a0522d;
            padding: 0;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        nav ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
        }

        nav ul li {
            margin: 0;
        }

        nav ul li a {
            display: block;
            padding: 1rem 1.5rem;
            color: #fff;
            text-decoration: none;
            transition: background-color 0.3s ease;
            font-weight: 500;
        }

        nav ul li a:hover {
            background-color: #8b4513;
        }

        main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem 1rem;
        }

        article {
            background-color: #fff;
            padding: 2rem;
            margin-bottom: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        }

        article h2, article h3, article h4 {
            color: #8b4513;
            margin-top: 1.5rem;
            margin-bottom: 1rem;
        }

        article h2 {
            font-size: 2rem;
            border-bottom: 3px solid #a0522d;
            padding-bottom: 0.5rem;
        }

        article h3 {
            font-size: 1.5rem;
        }

        article h4 {
            font-size: 1.2rem;
        }

        article p {
            margin-bottom: 1rem;
            text-align: justify;
            font-size: 1.1rem;
        }

        .transition-content {
            background-color: #fff;
            padding: 2rem;
            margin-bottom: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        }

        .transition-content p {
            margin-bottom: 1rem;
            font-size: 1.1rem;
        }

        .links-section {
            background-color: #fff;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            margin-bottom: 2rem;
        }

        .links-section h3 {
            color: #8b4513;
            font-size: 1.5rem;
            margin-top: 2rem;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #a0522d;
        }

        .links-section h3:first-child {
            margin-top: 0;
        }

        .links-section ul {
            list-style: none;
            column-count: 2;
            column-gap: 2rem;
            margin-bottom: 1.5rem;
        }

        .links-section ul li {
            margin-bottom: 0.75rem;
            break-inside: avoid;
        }

        .links-section ul li a {
            color: #a0522d;
            text-decoration: none;
            transition: color 0.3s ease;
            font-size: 1rem;
        }

        .links-section ul li a:hover {
            color: #8b4513;
            text-decoration: underline;
        }

        .links-section ul li a::before {
            content: "→ ";
            margin-right: 0.5rem;
        }

        footer {
            background-color: #8b4513;
            color: #fff;
            text-align: center;
            padding: 1.5rem 1rem;
            margin-top: 2rem;
        }

        @media (max-width: 768px) {
            header h1 {
                font-size: 1.8rem;
            }

            nav ul {
                flex-direction: column;
            }

            nav ul li {
                width: 100%;
                text-align: center;
            }

            nav ul li a {
                padding: 0.75rem 1rem;
            }

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

            article h2 {
                font-size: 1.5rem;
            }

            article h3 {
                font-size: 1.3rem;
            }

            .links-section ul {
                column-count: 1;
            }

            main {
                padding: 1rem;
            }
        }

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

            article p, .transition-content p {
                font-size: 1rem;
            }

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