* {
            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: linear-gradient(to bottom, #f5f5f5 0%, #e8e8e8 100%);
            min-height: 100vh;
        }

        header {
            background: linear-gradient(135deg, #2c5f8d 0%, #1a3d5c 100%);
            color: white;
            padding: 2rem 1rem;
            text-align: center;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            position: relative;
            overflow: hidden;
        }

        header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(to right, #4a90e2, #2c5f8d, #4a90e2);
        }

        h1 {
            font-size: 2rem;
            font-weight: 600;
            margin: 0;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
            line-height: 1.3;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem 1rem;
        }

        article {
            background: white;
            padding: 2.5rem;
            margin-bottom: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            border-top: 4px solid #2c5f8d;
        }

        article h2 {
            color: #2c5f8d;
            margin-top: 1.5rem;
            margin-bottom: 1rem;
            font-size: 1.5rem;
            border-bottom: 2px solid #e0e0e0;
            padding-bottom: 0.5rem;
        }

        article h2:first-child {
            margin-top: 0;
        }

        article h3 {
            color: #1a3d5c;
            margin-top: 1.25rem;
            margin-bottom: 0.75rem;
            font-size: 1.25rem;
        }

        article p {
            margin-bottom: 1rem;
            text-align: justify;
            color: #444;
        }

        article img {
            max-width: 100%;
            height: auto;
            border-radius: 4px;
            margin: 1rem 0;
        }

        .transition-section {
            background: white;
            padding: 2rem 2.5rem;
            margin-bottom: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            border-left: 4px solid #4a90e2;
        }

        .transition-section p {
            color: #444;
            margin-bottom: 1rem;
            line-height: 1.7;
        }

        .links-section {
            background: white;
            padding: 2.5rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            border-top: 4px solid #2c5f8d;
        }

        .links-section h3 {
            color: #2c5f8d;
            margin-top: 2rem;
            margin-bottom: 1rem;
            font-size: 1.35rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e0e0e0;
        }

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

        .links-section ul {
            list-style: none;
            column-count: 2;
            column-gap: 2rem;
            margin-bottom: 1.5rem;
        }

        .links-section li {
            break-inside: avoid;
            margin-bottom: 0.75rem;
            padding-left: 1.5rem;
            position: relative;
        }

        .links-section li::before {
            content: '→';
            position: absolute;
            left: 0;
            color: #4a90e2;
            font-weight: bold;
        }

        .links-section a {
            color: #1a3d5c;
            text-decoration: none;
            transition: color 0.3s ease;
            display: inline-block;
        }

        .links-section a:hover {
            color: #4a90e2;
            text-decoration: underline;
        }

        footer {
            background: linear-gradient(135deg, #1a3d5c 0%, #2c5f8d 100%);
            color: white;
            text-align: center;
            padding: 1.5rem 1rem;
            margin-top: 3rem;
            box-shadow: 0 -4px 6px rgba(0, 0, 0, 0.1);
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 1.5rem;
            }

            article,
            .transition-section,
            .links-section {
                padding: 1.5rem;
            }

            .container {
                padding: 1rem;
            }

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

            article h2 {
                font-size: 1.3rem;
            }

            article h3 {
                font-size: 1.1rem;
            }
        }

        @media (max-width: 480px) {
            h1 {
                font-size: 1.25rem;
            }

            header {
                padding: 1.5rem 1rem;
            }

            article,
            .transition-section,
            .links-section {
                padding: 1rem;
            }
        }