* {
            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: #f8f8f8;
        }

        header {
            background-color: #1a1a1a;
            padding: 1rem 0;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }

        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            color: #fff;
            font-size: 1.5rem;
            font-weight: bold;
        }

        nav {
            background-color: #2c2c2c;
            padding: 1rem 0;
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .nav-container ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            justify-content: center;
        }

        .nav-container a {
            color: #fff;
            text-decoration: none;
            transition: color 0.3s;
            font-size: 0.95rem;
        }

        .nav-container a:hover {
            color: #4a90e2;
        }

        main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 40px 20px;
        }

        h1 {
            font-size: 2.5rem;
            color: #1a1a1a;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 3px solid #4a90e2;
        }

        article {
            background-color: #fff;
            padding: 2rem;
            margin-bottom: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        article h2 {
            color: #2c2c2c;
            margin-top: 1.5rem;
            margin-bottom: 1rem;
            font-size: 1.8rem;
        }

        article h3 {
            color: #3c3c3c;
            margin-top: 1.3rem;
            margin-bottom: 0.8rem;
            font-size: 1.4rem;
        }

        article h4 {
            color: #4c4c4c;
            margin-top: 1rem;
            margin-bottom: 0.6rem;
            font-size: 1.2rem;
        }

        article p {
            margin-bottom: 1rem;
            line-height: 1.8;
            color: #444;
        }

        .transition-section {
            background-color: #fff;
            padding: 2rem;
            margin-bottom: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        .transition-section p {
            line-height: 1.8;
            color: #444;
            margin-bottom: 1rem;
        }

        {% if links %}
        .links-section {
            background-color: #fff;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        .links-section h3 {
            color: #2c2c2c;
            margin-top: 1.5rem;
            margin-bottom: 1rem;
            font-size: 1.5rem;
        }

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

        .links-section li {
            break-inside: avoid;
            margin-bottom: 0.8rem;
        }

        .links-section a {
            color: #4a90e2;
            text-decoration: none;
            transition: color 0.3s;
            display: inline-block;
            padding: 0.3rem 0;
        }

        .links-section a:hover {
            color: #2c5fa0;
            text-decoration: underline;
        }
        {% endif %}

        footer {
            background-color: #1a1a1a;
            color: #c4c4c4;
            padding: 3rem 0 1rem;
            margin-top: 3rem;
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-section h4 {
            color: #fff;
            margin-bottom: 1rem;
            font-size: 1.1rem;
        }

        .footer-section p {
            margin-bottom: 0.5rem;
            font-size: 0.9rem;
        }

        .footer-section ul {
            list-style: none;
        }

        .footer-section a {
            color: #c4c4c4;
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-section a:hover {
            color: #fff;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #333;
            color: #999;
            font-size: 0.9rem;
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }

            article h2 {
                font-size: 1.5rem;
            }

            article h3 {
                font-size: 1.2rem;
            }

            .nav-container ul {
                flex-direction: column;
                gap: 1rem;
            }

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

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

        @media (max-width: 480px) {
            h1 {
                font-size: 1.7rem;
            }

            .header-container {
                flex-direction: column;
                gap: 1rem;
            }

            main {
                padding: 20px 15px;
            }
        }