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

        body {
            font-family: Arial, Helvetica, sans-serif;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            background-attachment: fixed;
            color: #000000;
            line-height: 1.6;
            min-height: 100vh;
        }

        header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 3rem 2rem;
            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;
            bottom: 0;
            background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><path d="M50 0L61.8 38.2 100 50 61.8 61.8 50 100 38.2 61.8 0 50 38.2 38.2z" fill="rgba(255,255,255,0.1)"/></svg>');
            opacity: 0.3;
        }

        h1 {
            font-size: 3rem;
            font-weight: bold;
            margin: 0;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
            position: relative;
            z-index: 1;
        }

        .subtitle {
            font-size: 1.5rem;
            margin-top: 0.5rem;
            color: #FFFFFF;
            text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
            position: relative;
            z-index: 1;
        }

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

        article {
            background: white;
            padding: 2.5rem;
            margin: 2rem 0;
            border-radius: 12px;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
        }

        article h2 {
            color: #3366FF;
            margin-top: 2rem;
            margin-bottom: 1rem;
            font-size: 1.8rem;
            border-bottom: 3px solid #667eea;
            padding-bottom: 0.5rem;
        }

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

        article h3 {
            color: #595959;
            margin-top: 1.5rem;
            margin-bottom: 0.8rem;
            font-size: 1.4rem;
        }

        article p {
            margin-bottom: 1rem;
            color: #333;
            text-align: justify;
        }

        .transition-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 2.5rem;
            margin: 2rem 0;
            border-radius: 12px;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
        }

        .transition-section p {
            color: white;
            font-size: 1.1rem;
            margin-bottom: 1rem;
        }

        .links-section {
            background: white;
            padding: 2.5rem;
            margin: 2rem 0;
            border-radius: 12px;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
        }

        .links-section h3 {
            color: #3366FF;
            margin-top: 2rem;
            margin-bottom: 1rem;
            font-size: 1.6rem;
            border-bottom: 2px solid #667eea;
            padding-bottom: 0.5rem;
        }

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

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 0.8rem 2rem;
            margin-bottom: 2rem;
        }

        .links-section ul li {
            padding-left: 1.5rem;
            position: relative;
        }

        .links-section ul li::before {
            content: '▶';
            position: absolute;
            left: 0;
            color: #667eea;
            font-size: 0.8rem;
        }

        .links-section a {
            color: #0000FF;
            text-decoration: none;
            transition: color 0.3s ease;
            display: inline-block;
        }

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

        .links-section a:visited {
            color: #FF0000;
        }

        footer {
            background: #2d3748;
            color: #a0aec0;
            text-align: center;
            padding: 2rem;
            margin-top: 3rem;
        }

        footer p {
            font-size: 0.9rem;
        }

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

            .subtitle {
                font-size: 1.2rem;
            }

            header {
                padding: 2rem 1rem;
            }

            .container {
                padding: 1rem;
            }

            article {
                padding: 1.5rem;
            }

            article h2 {
                font-size: 1.5rem;
            }

            article h3 {
                font-size: 1.2rem;
            }

            .transition-section {
                padding: 1.5rem;
            }

            .links-section {
                padding: 1.5rem;
            }

            .links-section ul {
                grid-template-columns: 1fr;
                gap: 0.6rem;
            }

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

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

            .subtitle {
                font-size: 1rem;
            }

            article h2 {
                font-size: 1.3rem;
            }
        }