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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }

        header {
            background-color: #fff;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        header nav {
            max-width: 1200px;
            margin: 0 auto;
            padding: 1rem 2rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo img {
            height: 40px;
            width: auto;
        }

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

        h1 {
            font-size: 2.5rem;
            color: #2c3e50;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 3px solid #f3902f;
            font-weight: 700;
        }

        article {
            background: #fff;
            padding: 2.5rem;
            margin-bottom: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
        }

        article h2 {
            font-size: 1.8rem;
            color: #2c3e50;
            margin-top: 2rem;
            margin-bottom: 1rem;
            font-weight: 600;
        }

        article h3 {
            font-size: 1.4rem;
            color: #34495e;
            margin-top: 1.5rem;
            margin-bottom: 0.8rem;
            font-weight: 600;
        }

        article h4 {
            font-size: 1.2rem;
            color: #34495e;
            margin-top: 1.2rem;
            margin-bottom: 0.6rem;
            font-weight: 600;
        }

        article p {
            font-size: 1.05rem;
            line-height: 1.8;
            margin-bottom: 1.2rem;
            color: #555;
        }

        .transition-section {
            background: #fff;
            padding: 2rem 2.5rem;
            margin-bottom: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
            border-left: 4px solid #f3902f;
        }

        .transition-section p {
            font-size: 1.05rem;
            line-height: 1.8;
            margin-bottom: 1rem;
            color: #555;
        }

        .links-section {
            background: #fff;
            padding: 2.5rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
        }

        .links-section h2 {
            font-size: 1.8rem;
            color: #2c3e50;
            margin-bottom: 2rem;
            font-weight: 600;
        }

        .links-section h3 {
            font-size: 1.3rem;
            color: #34495e;
            margin-top: 2rem;
            margin-bottom: 1rem;
            font-weight: 600;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e9ecef;
        }

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

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

        .links-section a {
            color: #f3902f;
            text-decoration: none;
            font-size: 1rem;
            transition: all 0.3s ease;
            display: inline-block;
            position: relative;
        }

        .links-section a:hover {
            color: #d67a1f;
            transform: translateX(5px);
        }

        .links-section a:before {
            content: "→";
            margin-right: 0.5rem;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .links-section a:hover:before {
            opacity: 1;
        }

        @media (max-width: 768px) {
            header nav {
                padding: 1rem;
            }

            main {
                padding: 1rem;
            }

            h1 {
                font-size: 2rem;
            }

            article {
                padding: 1.5rem;
            }

            article h2 {
                font-size: 1.5rem;
            }

            article h3 {
                font-size: 1.2rem;
            }

            article h4 {
                font-size: 1.1rem;
            }

            article p {
                font-size: 1rem;
            }

            .transition-section {
                padding: 1.5rem;
            }

            .transition-section p {
                font-size: 1rem;
            }

            .links-section {
                padding: 1.5rem;
            }

            .links-section h2 {
                font-size: 1.5rem;
            }

            .links-section h3 {
                font-size: 1.2rem;
            }

            .links-section ul {
                grid-template-columns: 1fr;
                gap: 0.5rem;
            }
        }

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

            article h2 {
                font-size: 1.3rem;
            }

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