* {
            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: #f5f5f5;
        }

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

        header {
            background-color: #2c3e50;
            color: #fff;
            padding: 2rem 0;
            text-align: center;
            border-bottom: 4px solid #e67e22;
        }

        header h1 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        nav {
            background-color: #34495e;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }

        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: #ecf0f1;
            text-decoration: none;
            font-weight: 500;
            transition: background-color 0.3s ease, color 0.3s ease;
            border-bottom: 3px solid transparent;
        }

        nav ul li a:hover,
        nav ul li a.active {
            background-color: #e67e22;
            color: #fff;
            border-bottom-color: #d35400;
        }

        .main-content {
            padding: 3rem 2rem;
            max-width: 900px;
            margin: 0 auto;
        }

        h1 {
            color: #2c3e50;
            font-size: 2.2rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #e67e22;
        }

        article {
            margin-bottom: 3rem;
        }

        article h2 {
            color: #34495e;
            font-size: 1.8rem;
            margin-top: 2rem;
            margin-bottom: 1rem;
        }

        article h3 {
            color: #34495e;
            font-size: 1.4rem;
            margin-top: 1.5rem;
            margin-bottom: 0.8rem;
        }

        article p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
            line-height: 1.8;
            color: #555;
        }

        article strong {
            color: #2c3e50;
        }

        article em {
            color: #e67e22;
            font-style: italic;
        }

        article a {
            color: #e67e22;
            text-decoration: none;
            font-weight: 600;
            border-bottom: 2px solid transparent;
            transition: border-bottom-color 0.3s ease;
        }

        article a:hover {
            border-bottom-color: #e67e22;
        }

        .transition-section {
            background-color: #ecf0f1;
            padding: 2rem;
            margin: 3rem 0;
            border-left: 4px solid #e67e22;
            border-radius: 4px;
        }

        .transition-section p {
            font-size: 1.05rem;
            line-height: 1.8;
            color: #555;
            margin-bottom: 1rem;
        }

        .transition-section p:last-child {
            margin-bottom: 0;
        }

        {% if links %}
        .links-section {
            background-color: #fafafa;
            padding: 3rem 2rem;
            margin-top: 3rem;
            border-top: 3px solid #e67e22;
        }

        .links-section h3 {
            color: #2c3e50;
            font-size: 1.5rem;
            margin-bottom: 1rem;
            margin-top: 2rem;
        }

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

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

        .links-section ul li {
            break-inside: avoid;
            margin-bottom: 0.8rem;
            padding-left: 1.5rem;
            position: relative;
        }

        .links-section ul li:before {
            content: "▸";
            position: absolute;
            left: 0;
            color: #e67e22;
            font-weight: bold;
        }

        .links-section ul li a {
            color: #2c3e50;
            text-decoration: none;
            transition: color 0.3s ease;
            font-size: 1rem;
        }

        .links-section ul li a:hover {
            color: #e67e22;
        }
        {% endif %}

        footer {
            background-color: #2c3e50;
            color: #ecf0f1;
            text-align: center;
            padding: 2rem;
            margin-top: 3rem;
            font-size: 0.9rem;
        }

        @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: 0.8rem;
            }

            .main-content {
                padding: 2rem 1rem;
            }

            h1 {
                font-size: 1.8rem;
            }

            article h2 {
                font-size: 1.5rem;
            }

            article h3 {
                font-size: 1.2rem;
            }

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

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

            h1 {
                font-size: 1.5rem;
            }

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