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

        body {
            font-family: arial, helvetica, sans-serif;
            font-size: 16px;
            line-height: 1.6;
            color: #333;
            background: #fff;
        }

        header {
            background: #eaeaea;
            border-bottom: 2px solid #777;
            padding: 1.5rem 0;
            margin-bottom: 2rem;
        }

        header h1 {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            font-size: 2rem;
            color: #656;
        }

        main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem 3rem;
        }

        article {
            background: #fff;
            margin-bottom: 2rem;
            padding: 1.5rem 0;
        }

        article h2 {
            font-size: 1.5rem;
            color: #656;
            margin: 1.5rem 0 0.75rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #ddd;
        }

        article h3 {
            font-size: 1.3rem;
            color: #656;
            margin: 1.25rem 0 0.5rem;
        }

        article h4 {
            font-size: 1.1rem;
            color: #656;
            margin: 1rem 0 0.5rem;
        }

        article p {
            margin: 0 0 1rem;
            color: #444;
        }

        article strong {
            font-weight: bold;
            color: #333;
        }

        article a {
            color: #656;
            font-weight: bold;
            text-decoration: none;
        }

        article a:hover {
            text-decoration: underline;
        }

        .transition-section {
            background: #f4f4f4;
            border: 1px solid #ccc;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 4px;
        }

        .transition-section p {
            margin-bottom: 0.75rem;
            color: #555;
        }

        .links-section {
            background: #fafafa;
            border: 1px solid #888;
            padding: 2rem;
            margin: 2rem 0;
        }

        .links-section h2 {
            font-size: 1.6rem;
            color: #656;
            margin-bottom: 1.5rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px solid #777;
        }

        .links-section h3 {
            font-size: 1.2rem;
            color: #656;
            margin: 1.5rem 0 0.75rem;
            padding: 0.5rem;
            background: #eaeaea;
            border: 1px solid #777;
        }

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 0.5rem 2rem;
            margin-bottom: 1.5rem;
        }

        .links-section li {
            padding: 0.4rem 0;
        }

        .links-section li:before {
            content: "▸ ";
            color: #656;
            font-weight: bold;
            margin-right: 0.5rem;
        }

        .links-section a {
            color: #656;
            font-weight: bold;
            text-decoration: none;
            transition: color 0.2s;
        }

        .links-section a:hover {
            color: #333;
            text-decoration: underline;
        }

        footer {
            background: #eaeaea;
            border-top: 2px solid #777;
            padding: 1.5rem 0;
            margin-top: 3rem;
            text-align: center;
            color: #666;
            font-size: 0.9rem;
        }

        @media (max-width: 768px) {
            header h1 {
                font-size: 1.5rem;
                padding: 0 1rem;
            }

            main {
                padding: 0 1rem 2rem;
            }

            article {
                padding: 1rem 0;
            }

            article h2 {
                font-size: 1.3rem;
            }

            article h3 {
                font-size: 1.15rem;
            }

            .links-section {
                padding: 1rem;
            }

            .links-section ul {
                grid-template-columns: 1fr;
                gap: 0.25rem;
            }

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

        @media (max-width: 480px) {
            body {
                font-size: 14px;
            }

            header h1 {
                font-size: 1.25rem;
            }

            article h2 {
                font-size: 1.2rem;
            }

            .links-section h2 {
                font-size: 1.3rem;
            }

            .links-section h3 {
                font-size: 1.1rem;
            }
        }