* {
            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-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAQAAAAECAYAAACp8Z5+AAAAGklEQVQIW2NkYGD4z8DAwMgABXAGNgGwSgwVAFbmAgXxhzQGAAAAAElFTkSuQmCC);
            background-color: #e8f4fd;
            background-position: 18px 0;
        }

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

        header {
            background: linear-gradient(135deg, #619dd5 0%, #96bee3 100%);
            padding: 30px 0;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            margin-bottom: 30px;
        }

        h1 {
            color: #fff;
            font-size: 2.5em;
            text-align: center;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
            margin-bottom: 0;
        }

        article {
            background-color: #d0e7fc;
            border: 2px solid #c4e1fb;
            border-radius: 8px;
            padding: 30px;
            margin-bottom: 30px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        article h2 {
            color: #333;
            font-size: 1.8em;
            margin-bottom: 15px;
            margin-top: 25px;
            border-bottom: 2px solid #619dd5;
            padding-bottom: 8px;
        }

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

        article h3 {
            color: #005;
            font-size: 1.4em;
            margin-bottom: 12px;
            margin-top: 20px;
        }

        article h4 {
            color: #333;
            font-size: 1.2em;
            margin-bottom: 10px;
            margin-top: 15px;
        }

        article p {
            margin-bottom: 15px;
            color: #202020;
            text-align: justify;
        }

        article a {
            color: #005;
            text-decoration: none;
            border-bottom: 1px solid transparent;
            transition: all 0.3s ease;
        }

        article a:hover {
            color: #b22f00;
            border-bottom-color: #b22f00;
        }

        .transition-section {
            background-color: #d0e7fc;
            border: 2px solid #c4e1fb;
            border-radius: 8px;
            padding: 25px 30px;
            margin-bottom: 30px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        .transition-section p {
            margin-bottom: 12px;
            color: #202020;
            line-height: 1.7;
        }

        .transition-section p:last-child {
            margin-bottom: 0;
        }

        .links-section {
            background-color: #96bee3;
            border: 2px solid #619dd5;
            border-radius: 8px;
            padding: 30px;
            margin-bottom: 30px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        .links-section h2 {
            color: #fff;
            font-size: 2em;
            margin-bottom: 20px;
            text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
        }

        .links-section h3 {
            color: #005;
            font-size: 1.5em;
            margin-top: 25px;
            margin-bottom: 15px;
            padding-bottom: 8px;
            border-bottom: 2px solid #619dd5;
        }

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

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

        .links-section li {
            break-inside: avoid;
            margin-bottom: 10px;
            padding-left: 20px;
            position: relative;
        }

        .links-section li:before {
            content: "▪";
            position: absolute;
            left: 0;
            color: #005;
            font-size: 1.2em;
        }

        .links-section a {
            color: #005;
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-block;
        }

        .links-section a:hover {
            color: #b22f00;
            transform: translateX(5px);
        }

        footer {
            background: linear-gradient(135deg, #619dd5 0%, #96bee3 100%);
            padding: 20px 0;
            margin-top: 40px;
            text-align: center;
            color: #fff;
            box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
        }

        footer p {
            margin: 5px 0;
            font-size: 0.9em;
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 2em;
            }

            article, .transition-section, .links-section {
                padding: 20px;
            }

            article h2 {
                font-size: 1.5em;
            }

            article h3 {
                font-size: 1.2em;
            }

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

            .links-section h2 {
                font-size: 1.6em;
            }

            .links-section h3 {
                font-size: 1.3em;
            }
        }

        @media (max-width: 480px) {
            h1 {
                font-size: 1.6em;
            }

            header {
                padding: 20px 0;
            }

            article, .transition-section, .links-section {
                padding: 15px;
            }

            .container {
                padding: 0 15px;
            }
        }