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

        body {
            font-family: Verdana, Arial, sans-serif;
            font-size: 14px;
            line-height: 1.6;
            color: #333;
            background: #f5f5f5;
            text-align: center;
        }

        #container {
            max-width: 900px;
            margin: 0 auto;
            background: #fff;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
            text-align: left;
        }

        header {
            background: linear-gradient(135deg, #6688aa 0%, #445566 100%);
            padding: 20px 30px;
            color: #fff;
        }

        h1 {
            font-size: 28px;
            font-weight: normal;
            color: #fff;
            margin: 0;
            padding: 10px 0;
        }

        nav {
            background: #688;
            padding: 0;
        }

        nav ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            margin: 0;
            padding: 0;
        }

        nav ul li {
            flex: 1;
            min-width: 120px;
        }

        nav ul li a {
            display: block;
            padding: 15px 20px;
            color: #fff;
            text-decoration: none;
            text-align: center;
            transition: background 0.3s ease;
            border-right: 1px solid rgba(255, 255, 255, 0.1);
        }

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

        nav ul li a:hover {
            background: #556677;
        }

        main {
            padding: 40px 30px;
        }

        article {
            margin-bottom: 40px;
        }

        article h2 {
            font-size: 22px;
            color: #688;
            margin: 30px 0 15px 0;
            padding-bottom: 10px;
            border-bottom: 2px solid #DEE;
        }

        article h3 {
            font-size: 18px;
            color: #556677;
            margin: 25px 0 12px 0;
        }

        article h4 {
            font-size: 16px;
            color: #688;
            margin: 20px 0 10px 0;
        }

        article p {
            margin: 12px 0;
            text-align: justify;
        }

        article a {
            color: #688;
            text-decoration: underline;
        }

        article a:hover {
            color: #333;
            background-color: #DEE;
        }

        .transition-section {
            background: #f9f9f9;
            padding: 30px;
            margin: 40px 0;
            border-left: 4px solid #688;
        }

        .transition-section p {
            margin: 12px 0;
        }

        {% if links %}
        .links-section {
            background: #fafafa;
            padding: 40px 30px;
            margin-top: 40px;
            border-top: 3px solid #688;
        }

        .links-section h3 {
            font-size: 20px;
            color: #688;
            margin: 30px 0 15px 0;
            padding-bottom: 8px;
            border-bottom: 2px solid #DEE;
        }

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

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px 20px;
            margin: 15px 0 30px 0;
        }

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

        .links-section ul li a {
            color: #688;
            text-decoration: none;
            display: block;
            padding: 8px 12px;
            background: #fff;
            border-left: 3px solid #DEE;
            transition: all 0.3s ease;
        }

        .links-section ul li a:hover {
            color: #333;
            background-color: #DEE;
            border-left-color: #688;
            padding-left: 18px;
        }
        {% endif %}

        footer {
            background: #445566;
            padding: 20px 30px;
            text-align: center;
            color: #aaa;
            font-size: 12px;
        }

        footer a {
            color: #688;
            text-decoration: none;
        }

        footer a:hover {
            color: #DEE;
        }

        @media (max-width: 768px) {
            body {
                font-size: 13px;
            }

            h1 {
                font-size: 24px;
            }

            header {
                padding: 15px 20px;
            }

            nav ul {
                flex-direction: column;
            }

            nav ul li {
                min-width: 100%;
            }

            nav ul li a {
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }

            main {
                padding: 25px 20px;
            }

            article h2 {
                font-size: 20px;
            }

            article h3 {
                font-size: 17px;
            }

            .transition-section {
                padding: 20px;
                margin: 30px 0;
            }

            {% if links %}
            .links-section {
                padding: 25px 20px;
            }

            .links-section ul {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .links-section h3 {
                font-size: 18px;
            }
            {% endif %}
        }

        @media (max-width: 480px) {
            h1 {
                font-size: 20px;
            }

            header {
                padding: 12px 15px;
            }

            main {
                padding: 20px 15px;
            }

            article h2 {
                font-size: 18px;
            }

            article h3 {
                font-size: 16px;
            }

            nav ul li a {
                padding: 12px 15px;
            }
        }