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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }

        header {
            background-color: #fff;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 1rem 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: #2c5282;
        }

        nav ul {
            list-style: none;
            display: flex;
            gap: 2rem;
            flex-wrap: wrap;
        }

        nav a {
            text-decoration: none;
            color: #333;
            font-weight: 500;
            transition: color 0.3s;
        }

        nav a:hover {
            color: #2c5282;
        }

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

        h1 {
            font-size: 2.5rem;
            color: #2c5282;
            margin: 2rem 0;
            padding: 2rem;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border-radius: 8px;
            text-align: center;
        }

        article {
            background: white;
            padding: 3rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            margin-bottom: 2rem;
        }

        article h2 {
            color: #2c5282;
            font-size: 2rem;
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #667eea;
        }

        article h3 {
            color: #4a5568;
            font-size: 1.5rem;
            margin: 1.5rem 0 1rem;
        }

        article h4 {
            color: #4a5568;
            font-size: 1.25rem;
            margin: 1.25rem 0 0.75rem;
        }

        article p {
            margin-bottom: 1.25rem;
            color: #4a5568;
            font-size: 1.05rem;
        }

        .transition-section {
            background: white;
            padding: 2rem 3rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            margin-bottom: 2rem;
        }

        .transition-section p {
            color: #4a5568;
            font-size: 1.05rem;
            margin-bottom: 1rem;
        }

        .links-section {
            background: linear-gradient(135deg, #f6f8fb 0%, #e9ecef 100%);
            padding: 3rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            margin-bottom: 2rem;
        }

        .links-section h3 {
            color: #2c5282;
            font-size: 1.5rem;
            margin-bottom: 1rem;
            margin-top: 2rem;
        }

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

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 0.75rem;
            margin-bottom: 2rem;
        }

        .links-section li {
            background: white;
            border-radius: 4px;
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .links-section li:hover {
            transform: translateX(5px);
            box-shadow: 0 2px 6px rgba(0,0,0,0.15);
        }

        .links-section a {
            display: block;
            padding: 0.75rem 1rem;
            color: #2c5282;
            text-decoration: none;
            font-weight: 500;
        }

        .links-section a:hover {
            color: #667eea;
        }

        footer {
            background-color: #2d3748;
            color: #fff;
            padding: 2rem;
            margin-top: 3rem;
        }

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

        .footer-left {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .footer-nav ul {
            list-style: none;
            display: flex;
            gap: 2rem;
            flex-wrap: wrap;
        }

        .footer-nav a {
            color: #fff;
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-nav a:hover {
            color: #667eea;
        }

        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                gap: 1rem;
            }

            nav ul {
                flex-direction: column;
                gap: 0.5rem;
                text-align: center;
            }

            h1 {
                font-size: 1.75rem;
                padding: 1.5rem;
            }

            article {
                padding: 1.5rem;
            }

            article h2 {
                font-size: 1.5rem;
            }

            .transition-section {
                padding: 1.5rem;
            }

            .links-section {
                padding: 1.5rem;
            }

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

            .footer-container {
                flex-direction: column;
                text-align: center;
            }

            .footer-nav ul {
                flex-direction: column;
                gap: 0.5rem;
            }
        }

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

            h1 {
                font-size: 1.5rem;
                padding: 1rem;
            }

            article {
                padding: 1rem;
            }

            .links-section {
                padding: 1rem;
            }

            .transition-section {
                padding: 1rem;
            }
        }