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

        body {
            font-family: Arial, Helvetica, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f4f4f4;
        }

        .page-wrapper {
            max-width: 1200px;
            margin: 0 auto;
            background-color: #fff;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
        }

        header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            padding: 2rem 2rem 1rem;
            border-bottom: 4px solid #5a67d8;
        }

        .logo {
            max-width: 300px;
            margin-bottom: 1rem;
        }

        nav {
            background-color: #4c51bf;
            padding: 0;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }

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

        nav ul li {
            position: relative;
        }

        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: #5a67d8;
        }

        main {
            padding: 2rem;
        }

        h1 {
            color: #2d3748;
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #667eea;
        }

        article {
            margin-bottom: 2rem;
            line-height: 1.8;
        }

        article h2 {
            color: #4c51bf;
            margin-top: 1.5rem;
            margin-bottom: 1rem;
            font-size: 1.8rem;
        }

        article h3 {
            color: #5a67d8;
            margin-top: 1.2rem;
            margin-bottom: 0.8rem;
            font-size: 1.4rem;
        }

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

        .transition-section {
            background-color: #f7fafc;
            padding: 2rem;
            margin: 2rem 0;
            border-left: 4px solid #667eea;
            border-radius: 4px;
        }

        .transition-section p {
            margin-bottom: 1rem;
            line-height: 1.8;
        }

        {% if links %}
        .links-section {
            background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
            padding: 3rem 2rem;
            margin-top: 2rem;
            border-top: 4px solid #667eea;
        }

        .links-section h3 {
            color: #2d3748;
            margin-bottom: 1.5rem;
            font-size: 1.6rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #cbd5e0;
        }

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 0.5rem 2rem;
            margin-bottom: 2rem;
        }

        .links-section ul li {
            padding: 0.5rem 0;
        }

        .links-section ul li a {
            color: #4c51bf;
            text-decoration: none;
            transition: color 0.3s ease, padding-left 0.3s ease;
            display: inline-block;
            position: relative;
            padding-left: 1rem;
        }

        .links-section ul li a:before {
            content: "→";
            position: absolute;
            left: 0;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .links-section ul li a:hover {
            color: #667eea;
            padding-left: 1.5rem;
        }

        .links-section ul li a:hover:before {
            opacity: 1;
        }
        {% endif %}

        footer {
            background-color: #2d3748;
            color: #cbd5e0;
            text-align: center;
            padding: 2rem;
            margin-top: 3rem;
        }

        @media (max-width: 768px) {
            header {
                padding: 1.5rem 1rem 0.5rem;
            }

            nav ul {
                flex-direction: column;
            }

            nav ul li a {
                padding: 0.75rem 1rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }

            main {
                padding: 1.5rem 1rem;
            }

            h1 {
                font-size: 2rem;
            }

            article h2 {
                font-size: 1.5rem;
            }

            article h3 {
                font-size: 1.2rem;
            }

            .transition-section {
                padding: 1.5rem;
            }

            {% if links %}
            .links-section {
                padding: 2rem 1rem;
            }

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

        @media (max-width: 480px) {
            h1 {
                font-size: 1.75rem;
            }

            article h2 {
                font-size: 1.3rem;
            }

            article h3 {
                font-size: 1.1rem;
            }
        }