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

        body {
            font-family: 'Arial', 'Helvetica', sans-serif;
            color: #808080;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            line-height: 1.6;
            min-height: 100vh;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.2);
        }

        header {
            background: linear-gradient(to right, #4a5f8f, #7D95BA);
            padding: 2rem;
            text-align: center;
            border-bottom: 4px solid #800000;
        }

        header h1 {
            color: #ffffff;
            font-size: 2.5rem;
            font-weight: 700;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
            margin: 0;
        }

        nav {
            background: #f8f9fa;
            border-bottom: 2px solid #e0e0e0;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }

        nav ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            padding: 0.5rem;
        }

        nav ul li {
            margin: 0.25rem;
        }

        nav ul li a {
            display: block;
            padding: 0.75rem 1.25rem;
            color: #800000;
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.3s ease;
            border-radius: 4px;
        }

        nav ul li a:hover {
            background: #800000;
            color: #ffffff;
            transform: translateY(-2px);
        }

        main {
            padding: 2rem;
            min-height: 400px;
        }

        article {
            margin-bottom: 2rem;
        }

        article h2, article h3, article h4 {
            color: #800000;
            margin-top: 1.5rem;
            margin-bottom: 1rem;
        }

        article h2 {
            font-size: 2rem;
            border-bottom: 3px solid #800000;
            padding-bottom: 0.5rem;
        }

        article h3 {
            font-size: 1.5rem;
        }

        article h4 {
            font-size: 1.2rem;
        }

        article p {
            margin-bottom: 1rem;
            font-size: 1rem;
            line-height: 1.8;
        }

        article ul, article ol {
            margin-left: 2rem;
            margin-bottom: 1rem;
        }

        article li {
            margin-bottom: 0.5rem;
            line-height: 1.8;
        }

        .transition-section {
            background: #f8f9fa;
            padding: 2rem;
            margin: 2rem 0;
            border-left: 4px solid #800000;
            border-radius: 4px;
        }

        .transition-section p {
            margin-bottom: 1rem;
            line-height: 1.8;
        }

        .links-section {
            background: linear-gradient(to bottom, #f8f9fa, #e9ecef);
            padding: 2rem;
            margin-top: 2rem;
            border-radius: 8px;
            border: 1px solid #dee2e6;
        }

        .links-section h2 {
            color: #800000;
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
            text-align: center;
            border-bottom: 3px solid #800000;
            padding-bottom: 0.5rem;
        }

        .links-section h3 {
            color: #4a5f8f;
            font-size: 1.3rem;
            margin-top: 1.5rem;
            margin-bottom: 1rem;
        }

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

        .links-section ul li {
            background: #ffffff;
            border-radius: 4px;
            transition: all 0.3s ease;
        }

        .links-section ul li:hover {
            transform: translateX(5px);
            box-shadow: 0 2px 8px rgba(128, 0, 0, 0.2);
        }

        .links-section ul li a {
            display: block;
            padding: 0.75rem 1rem;
            color: #800000;
            text-decoration: none;
            font-weight: 500;
            border-left: 3px solid transparent;
            transition: all 0.3s ease;
        }

        .links-section ul li a:hover {
            border-left-color: #800000;
            color: #4a5f8f;
        }

        footer {
            background: linear-gradient(to right, #4a5f8f, #7D95BA);
            color: #ffffff;
            text-align: center;
            padding: 2rem;
            margin-top: 3rem;
            border-top: 4px solid #800000;
        }

        footer p {
            margin: 0.5rem 0;
            font-size: 0.9rem;
        }

        @media (max-width: 768px) {
            header h1 {
                font-size: 1.8rem;
            }

            nav ul {
                flex-direction: column;
                align-items: stretch;
            }

            nav ul li {
                margin: 0.25rem 0;
            }

            nav ul li a {
                text-align: center;
            }

            main {
                padding: 1rem;
            }

            article h2 {
                font-size: 1.5rem;
            }

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

            .transition-section {
                padding: 1rem;
            }

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

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

            header h1 {
                font-size: 1.5rem;
            }

            nav ul li a {
                padding: 0.6rem 1rem;
                font-size: 0.85rem;
            }

            article h2 {
                font-size: 1.3rem;
            }

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