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

        body {
            font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #fafafa;
        }

        #headerWrapper {
            background-color: #fff;
            border-bottom: 1px solid #e8e8e8;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }

        header {
            max-width: 1200px;
            margin: 0 auto;
            padding: 1.2rem 2rem;
        }

        .wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }

        #logo h1 {
            font-size: 1.8rem;
            font-weight: 300;
            letter-spacing: 2px;
            text-transform: uppercase;
        }

        #logo a {
            color: #333;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        #logo a:hover {
            color: #666;
        }

        .main-nav {
            display: flex;
        }

        .main-nav ul {
            list-style: none;
            display: flex;
            gap: 2rem;
            align-items: center;
        }

        .main-nav a {
            text-decoration: none;
            color: #666;
            font-size: 0.95rem;
            letter-spacing: 0.5px;
            transition: color 0.3s ease;
            padding: 0.5rem 0;
        }

        .main-nav a:hover {
            color: #333;
        }

        .main-nav .active-link a {
            color: #333;
            font-weight: 500;
        }

        .menu, .controls {
            display: none;
        }

        #mobile-navigation {
            display: none;
        }

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

        h1 {
            font-size: 2.5rem;
            font-weight: 300;
            margin-bottom: 2rem;
            color: #222;
            letter-spacing: 1px;
            text-align: center;
        }

        article {
            background-color: #fff;
            padding: 2.5rem;
            margin-bottom: 2.5rem;
            border-radius: 2px;
            box-shadow: 0 1px 3px rgba(0,0,0,0.08);
        }

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

        article h2, article h3, article h4 {
            margin-top: 1.8rem;
            margin-bottom: 1rem;
            color: #333;
            font-weight: 400;
        }

        article h2 {
            font-size: 1.8rem;
        }

        article h3 {
            font-size: 1.4rem;
        }

        article h4 {
            font-size: 1.2rem;
        }

        .transition-section {
            background-color: #fff;
            padding: 2.5rem;
            margin-bottom: 2.5rem;
            border-radius: 2px;
            box-shadow: 0 1px 3px rgba(0,0,0,0.08);
        }

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

        .links-section {
            background-color: #fff;
            padding: 2.5rem;
            border-radius: 2px;
            box-shadow: 0 1px 3px rgba(0,0,0,0.08);
        }

        .links-section h3 {
            font-size: 1.3rem;
            font-weight: 400;
            margin-bottom: 1.2rem;
            margin-top: 2rem;
            color: #333;
            letter-spacing: 0.5px;
        }

        .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 li {
            padding: 0.4rem 0;
        }

        .links-section a {
            color: #666;
            text-decoration: none;
            font-size: 0.95rem;
            transition: color 0.3s ease;
            display: inline-block;
        }

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

        footer {
            background-color: #fff;
            border-top: 1px solid #e8e8e8;
            margin-top: 3rem;
            padding: 2rem;
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            text-align: center;
            color: #888;
            font-size: 0.9rem;
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }

            .menu {
                display: block;
                cursor: pointer;
                font-size: 1.5rem;
            }

            #mobile-navigation {
                display: none;
                background-color: #fff;
                border-top: 1px solid #e8e8e8;
            }

            #mobile-navigation.active {
                display: block;
            }

            #mobile-navigation ul {
                list-style: none;
                padding: 1rem 0;
            }

            #mobile-navigation li {
                border-bottom: 1px solid #f0f0f0;
            }

            #mobile-navigation a {
                display: block;
                padding: 1rem 2rem;
                color: #666;
                text-decoration: none;
                transition: background-color 0.3s ease;
            }

            #mobile-navigation a:hover {
                background-color: #f9f9f9;
            }

            #mobile-navigation .active-link a {
                color: #333;
                font-weight: 500;
            }

            h1 {
                font-size: 2rem;
            }

            main {
                padding: 2rem 1.5rem;
            }

            article, .transition-section, .links-section {
                padding: 1.5rem;
            }

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

            header {
                padding: 1rem 1.5rem;
            }

            #logo h1 {
                font-size: 1.4rem;
            }
        }

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

            article h2 {
                font-size: 1.5rem;
            }

            article h3 {
                font-size: 1.2rem;
            }
        }