* {
            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: #f5f5f5;
        }

        header {
            background-color: #ffffff;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

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

        .logo {
            text-align: center;
            padding: 15px 0;
        }

        .logo h2 {
            color: #344E79;
            font-size: 24px;
            font-weight: 600;
        }

        nav {
            background-color: #344E79;
            border-top: 4px solid #344E79;
        }

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

        nav ul li {
            margin: 0;
        }

        nav ul li a {
            display: block;
            color: #ffffff;
            text-decoration: none;
            padding: 12px 18px;
            font-weight: 500;
            font-size: 14px;
            transition: background-color 0.3s ease;
        }

        nav ul li a:hover {
            background-color: #2a3e5f;
        }

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

        h1 {
            color: #344E79;
            font-size: 32px;
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 3px solid #344E79;
        }

        article {
            background-color: #ffffff;
            padding: 35px;
            margin-bottom: 40px;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
            line-height: 1.8;
        }

        article h2 {
            color: #344E79;
            font-size: 26px;
            margin-top: 30px;
            margin-bottom: 15px;
        }

        article h3 {
            color: #344E79;
            font-size: 22px;
            margin-top: 25px;
            margin-bottom: 12px;
        }

        article h4 {
            color: #344E79;
            font-size: 18px;
            margin-top: 20px;
            margin-bottom: 10px;
        }

        article p {
            margin-bottom: 18px;
            color: #555;
            font-size: 16px;
        }

        .transition-section {
            background-color: #ffffff;
            padding: 30px 35px;
            margin-bottom: 40px;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
        }

        .transition-section p {
            color: #555;
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 15px;
        }

        .links-section {
            background-color: #ffffff;
            padding: 40px 35px;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
        }

        .links-section h2 {
            color: #344E79;
            font-size: 28px;
            margin-bottom: 25px;
            padding-bottom: 10px;
            border-bottom: 2px solid #e0e0e0;
        }

        .links-section h3 {
            color: #344E79;
            font-size: 20px;
            margin-top: 30px;
            margin-bottom: 15px;
        }

        .links-section ul {
            list-style: none;
            column-count: 2;
            column-gap: 40px;
            margin-bottom: 25px;
        }

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

        .links-section ul li a {
            color: #344E79;
            text-decoration: none;
            font-size: 15px;
            transition: color 0.3s ease;
            display: inline-block;
            padding-left: 20px;
            position: relative;
        }

        .links-section ul li a:before {
            content: "•";
            position: absolute;
            left: 0;
            color: #999;
        }

        .links-section ul li a:hover {
            color: #2a3e5f;
            text-decoration: underline;
        }

        footer {
            background-color: #f7f7f7;
            border-top: 1px solid #dbdbdb;
            padding: 30px 20px;
            margin-top: 60px;
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            text-align: center;
            color: #6d6d6d;
            font-size: 14px;
        }

        @media (max-width: 768px) {
            nav ul {
                flex-direction: column;
            }

            nav ul li {
                border-bottom: 1px solid #2a3e5f;
            }

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

            h1 {
                font-size: 26px;
            }

            article {
                padding: 25px 20px;
            }

            article h2 {
                font-size: 22px;
            }

            article h3 {
                font-size: 19px;
            }

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

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

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

        @media (max-width: 480px) {
            .header-container {
                padding: 15px 15px 0;
            }

            .logo h2 {
                font-size: 20px;
            }

            nav ul li a {
                padding: 10px 15px;
                font-size: 13px;
            }

            h1 {
                font-size: 22px;
            }

            article {
                padding: 20px 15px;
            }

            article p, .transition-section p {
                font-size: 15px;
            }
        }