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

        body {
            font-family: Georgia, 'Times New Roman', serif;
            line-height: 1.6;
            color: #333;
            background-color: #f5f5f5;
        }

        .top-bar {
            background-color: #fff;
            padding: 10px 20px;
            text-align: right;
            border-bottom: 1px solid #e0e0e0;
        }

        .top-bar a {
            color: #333;
            text-decoration: none;
            font-size: 13px;
            margin-left: 15px;
            transition: color 0.3s;
        }

        .top-bar a:before {
            content: "▸ ";
            color: #d32f2f;
            margin-right: 3px;
        }

        .top-bar a:hover {
            color: #d32f2f;
        }

        .navigation {
            background: linear-gradient(to bottom, #9CC7EA 0%, #8ab8dc 100%);
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
        }

        .nav-container a {
            color: #fff;
            text-decoration: none;
            padding: 12px 15px;
            display: block;
            font-size: 14px;
            font-weight: 500;
            transition: background-color 0.3s;
            border-right: 1px solid rgba(255,255,255,0.3);
        }

        .nav-container a:last-child {
            border-right: none;
        }

        .nav-container a:hover {
            background-color: #fff;
            color: #406DC2;
        }

        .header {
            background: linear-gradient(to bottom, #fff 0%, #f8f8f8 100%);
            text-align: center;
            padding: 30px 20px;
            border-bottom: 4px solid #406DC2;
        }

        .header h1 {
            font-size: 2.5em;
            color: #406DC2;
            font-style: italic;
            margin: 0;
        }

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

        article {
            background-color: #fff;
            padding: 40px;
            margin-bottom: 40px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            border-radius: 5px;
        }

        article h2 {
            color: #406DC2;
            margin-top: 30px;
            margin-bottom: 15px;
            font-size: 1.8em;
        }

        article h3 {
            color: #666;
            margin-top: 25px;
            margin-bottom: 12px;
            font-size: 1.4em;
        }

        article h4 {
            color: #888;
            margin-top: 20px;
            margin-bottom: 10px;
            font-size: 1.2em;
        }

        article p {
            margin-bottom: 20px;
            font-size: 16px;
            text-align: justify;
        }

        .transition-section {
            background-color: #E8F2FC;
            padding: 30px 40px;
            margin-bottom: 40px;
            border-left: 5px solid #9CC7EA;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        }

        .transition-section p {
            font-size: 16px;
            margin-bottom: 15px;
            color: #555;
        }

        .links-section {
            background-color: #fff;
            padding: 40px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            border-radius: 5px;
        }

        .links-section h3 {
            color: #406DC2;
            margin-top: 30px;
            margin-bottom: 20px;
            font-size: 1.5em;
            border-bottom: 2px solid #9CC7EA;
            padding-bottom: 10px;
        }

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

        .links-section ul {
            list-style: none;
            column-count: 2;
            column-gap: 40px;
            margin-bottom: 20px;
        }

        .links-section li {
            margin-bottom: 12px;
            break-inside: avoid;
        }

        .links-section a {
            color: #333;
            text-decoration: none;
            transition: color 0.3s;
            display: inline-block;
            padding-left: 20px;
            position: relative;
        }

        .links-section a:before {
            content: "◆";
            color: #d32f2f;
            position: absolute;
            left: 0;
            font-size: 12px;
        }

        .links-section a:hover {
            color: #406DC2;
            text-decoration: underline;
        }

        .footer {
            background-color: #406DC2;
            color: #fff;
            text-align: center;
            padding: 30px 20px;
            margin-top: 50px;
            font-size: 14px;
        }

        .footer-highlight {
            background-color: #9CC7EA;
            color: #333;
            padding: 20px;
            margin: 20px auto;
            max-width: 500px;
            border-radius: 5px;
            font-style: italic;
        }

        @media (max-width: 768px) {
            .nav-container a {
                padding: 10px 12px;
                font-size: 13px;
            }

            .header h1 {
                font-size: 1.8em;
            }

            article {
                padding: 25px;
            }

            article h2 {
                font-size: 1.5em;
            }

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

            .links-section {
                padding: 25px;
            }

            .transition-section {
                padding: 20px 25px;
            }

            .top-bar {
                text-align: center;
            }

            .top-bar a {
                display: inline-block;
                margin: 5px;
            }
        }

        @media (max-width: 480px) {
            .nav-container a {
                padding: 10px;
                font-size: 12px;
                flex: 1 1 50%;
                text-align: center;
                border-right: none;
                border-bottom: 1px solid rgba(255,255,255,0.3);
            }

            .header h1 {
                font-size: 1.5em;
            }

            article {
                padding: 20px;
            }

            article p {
                text-align: left;
            }
        }