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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #2c3e50;
            background-color: #f8f9fa;
        }

        header {
            background-color: #1e3a5f;
            padding: 1.5rem 0;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }

        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            color: #ffffff;
            font-size: 1.8rem;
            font-weight: 700;
            text-decoration: none;
            letter-spacing: 1px;
        }

        .logo span {
            color: #64b5f6;
        }

        nav {
            background-color: #2c5282;
            padding: 0;
            border-bottom: 3px solid #64b5f6;
        }

        nav ul {
            list-style: none;
            display: flex;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            flex-wrap: wrap;
        }

        nav ul li {
            margin: 0;
        }

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

        nav ul li a:hover {
            background-color: #1e3a5f;
        }

        main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 3rem 2rem;
        }

        h1 {
            color: #1e3a5f;
            font-size: 2.5rem;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 4px solid #64b5f6;
        }

        article {
            background-color: #ffffff;
            padding: 2.5rem;
            margin-bottom: 2.5rem;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.08);
        }

        article h2 {
            color: #1e3a5f;
            font-size: 2rem;
            margin-top: 2rem;
            margin-bottom: 1rem;
        }

        article h3 {
            color: #2c5282;
            font-size: 1.5rem;
            margin-top: 1.5rem;
            margin-bottom: 0.8rem;
        }

        article h4 {
            color: #2c5282;
            font-size: 1.2rem;
            margin-top: 1.2rem;
            margin-bottom: 0.6rem;
        }

        article p {
            margin-bottom: 1.2rem;
            text-align: justify;
            color: #4a5568;
        }

        .transition-section {
            background-color: #e3f2fd;
            padding: 2rem 2.5rem;
            margin-bottom: 2.5rem;
            border-radius: 8px;
            border-left: 5px solid #64b5f6;
        }

        .transition-section p {
            color: #2c3e50;
            margin-bottom: 1rem;
        }

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

        {% if links %}
        .links-section {
            background-color: #ffffff;
            padding: 2.5rem;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.08);
            margin-bottom: 2.5rem;
        }

        .links-section h2 {
            color: #1e3a5f;
            font-size: 2rem;
            margin-bottom: 2rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #64b5f6;
        }

        .links-section h3 {
            color: #2c5282;
            font-size: 1.4rem;
            margin-top: 2rem;
            margin-bottom: 1rem;
        }

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

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

        .links-section ul li a {
            color: #2c5282;
            text-decoration: none;
            transition: color 0.3s ease;
            display: inline-block;
            position: relative;
            padding-left: 1.2rem;
        }

        .links-section ul li a:before {
            content: "→";
            position: absolute;
            left: 0;
            color: #64b5f6;
            font-weight: bold;
        }

        .links-section ul li a:hover {
            color: #64b5f6;
        }
        {% endif %}

        footer {
            background-color: #1e3a5f;
            color: #ffffff;
            padding: 2rem 0;
            margin-top: 3rem;
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            text-align: center;
        }

        footer p {
            margin-bottom: 0.5rem;
        }

        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                text-align: center;
            }

            .logo {
                margin-bottom: 1rem;
                font-size: 1.5rem;
            }

            nav ul {
                flex-direction: column;
                padding: 0;
            }

            nav ul li {
                width: 100%;
                text-align: center;
                border-bottom: 1px solid #1e3a5f;
            }

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

            h1 {
                font-size: 2rem;
            }

            article {
                padding: 1.5rem;
            }

            article h2 {
                font-size: 1.6rem;
            }

            article h3 {
                font-size: 1.3rem;
            }

            .transition-section {
                padding: 1.5rem;
            }

            {% if links %}
            .links-section {
                padding: 1.5rem;
            }

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

        @media (max-width: 480px) {
            main {
                padding: 2rem 1rem;
            }

            h1 {
                font-size: 1.6rem;
            }

            article {
                padding: 1rem;
            }

            .transition-section {
                padding: 1rem;
            }

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