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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: #FFFFFF;
            color: #333;
            line-height: 1.6;
            padding: 20px;
        }

        h1 {
            text-align: center;
            color: #2c5aa0;
            font-size: 2.5em;
            margin: 30px 0;
            padding: 0 20px;
        }

        article {
            max-width: 900px;
            margin: 0 auto 40px;
            padding: 30px;
            background: #f9f9f9;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        article h2 {
            color: #2c5aa0;
            margin-top: 25px;
            margin-bottom: 15px;
            font-size: 1.8em;
        }

        article h3 {
            color: #4a7abc;
            margin-top: 20px;
            margin-bottom: 12px;
            font-size: 1.4em;
        }

        article h4 {
            color: #5a8acc;
            margin-top: 15px;
            margin-bottom: 10px;
            font-size: 1.2em;
        }

        article p {
            margin-bottom: 15px;
            text-align: justify;
        }

        .transition-content {
            max-width: 900px;
            margin: 0 auto 40px;
            padding: 25px 30px;
            background: #E2F2FF;
            border-radius: 8px;
            border-left: 4px solid #2c5aa0;
        }

        .transition-content p {
            margin-bottom: 12px;
            line-height: 1.7;
        }

        .links-section {
            max-width: 1100px;
            margin: 50px auto;
            padding: 40px 30px;
            background: #f0f8ff;
            border-radius: 8px;
            border: 2px solid #d0e8ff;
        }

        .links-section h2 {
            color: #2c5aa0;
            text-align: center;
            margin-bottom: 35px;
            font-size: 2em;
        }

        .links-section h3 {
            color: #2c5aa0;
            margin-top: 30px;
            margin-bottom: 15px;
            font-size: 1.5em;
            padding-bottom: 8px;
            border-bottom: 2px solid #2c5aa0;
        }

        .links-section ul {
            list-style: none;
            column-count: 2;
            column-gap: 30px;
            margin-bottom: 20px;
        }

        .links-section li {
            margin-bottom: 10px;
            break-inside: avoid;
            page-break-inside: avoid;
        }

        .links-section a {
            color: #2c5aa0;
            text-decoration: none;
            transition: color 0.3s ease;
            display: inline-block;
            padding: 5px 0;
        }

        .links-section a:hover {
            color: #1a3d70;
            text-decoration: underline;
        }

        .links-section a::before {
            content: "→ ";
            margin-right: 5px;
        }

        footer {
            max-width: 900px;
            margin: 50px auto 20px;
            padding: 20px;
            text-align: center;
            color: #666;
            font-size: 0.9em;
            border-top: 1px solid #ddd;
        }

        @media (max-width: 768px) {
            body {
                padding: 10px;
            }

            h1 {
                font-size: 2em;
                margin: 20px 0;
            }

            article {
                padding: 20px;
                margin-bottom: 30px;
            }

            article h2 {
                font-size: 1.5em;
            }

            article h3 {
                font-size: 1.3em;
            }

            .transition-content {
                padding: 20px;
                margin-bottom: 30px;
            }

            .links-section {
                padding: 25px 20px;
                margin: 30px auto;
            }

            .links-section h2 {
                font-size: 1.6em;
                margin-bottom: 25px;
            }

            .links-section h3 {
                font-size: 1.3em;
                margin-top: 20px;
            }

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

        @media (min-width: 769px) and (max-width: 1024px) {
            .links-section ul {
                column-gap: 20px;
            }
        }