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

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

        header {
            background-color: #ffffff;
            border-bottom: 1px solid #e5e5e5;
            padding: 20px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        }

        nav {
            max-width: 980px;
            margin: 0 auto;
            padding: 0 20px;
        }

        nav ul {
            list-style: none;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 30px;
        }

        nav ul li a {
            text-decoration: none;
            color: #333;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            transition: color 0.3s ease;
        }

        nav ul li a:hover {
            color: #666;
        }

        main {
            max-width: 980px;
            margin: 0 auto;
            padding: 60px 20px;
        }

        h1 {
            font-size: 48px;
            font-weight: 300;
            letter-spacing: 0.05em;
            margin-bottom: 40px;
            color: #222;
            line-height: 1.2;
        }

        article {
            margin-bottom: 60px;
        }

        article p {
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 20px;
            color: #555;
        }

        article h2 {
            font-size: 32px;
            font-weight: 400;
            margin-top: 40px;
            margin-bottom: 20px;
            color: #222;
            letter-spacing: 0.02em;
        }

        article h3 {
            font-size: 24px;
            font-weight: 400;
            margin-top: 30px;
            margin-bottom: 15px;
            color: #333;
        }

        article h4 {
            font-size: 20px;
            font-weight: 500;
            margin-top: 25px;
            margin-bottom: 12px;
            color: #333;
        }

        .transition-section {
            background-color: #fafafa;
            padding: 40px;
            margin: 60px 0;
            border-left: 4px solid #333;
        }

        .transition-section p {
            font-size: 16px;
            line-height: 1.8;
            color: #555;
            margin-bottom: 15px;
        }

        .links-section {
            background-color: #f5f5f5;
            padding: 60px 40px;
            margin-top: 60px;
        }

        .links-section h3 {
            font-size: 24px;
            font-weight: 400;
            margin-bottom: 20px;
            color: #222;
            letter-spacing: 0.02em;
        }

        .links-section ul {
            list-style: none;
            columns: 2;
            column-gap: 40px;
            margin-bottom: 40px;
        }

        .links-section ul li {
            margin-bottom: 12px;
            break-inside: avoid;
        }

        .links-section ul li a {
            color: #333;
            text-decoration: none;
            font-size: 15px;
            line-height: 1.6;
            transition: color 0.3s ease;
            display: inline-block;
            position: relative;
            padding-left: 15px;
        }

        .links-section ul li a:before {
            content: "→";
            position: absolute;
            left: 0;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .links-section ul li a:hover {
            color: #666;
            padding-left: 20px;
        }

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

        footer {
            background-color: #ffffff;
            border-top: 1px solid #e5e5e5;
            padding: 40px 20px;
            text-align: center;
            color: #888;
            font-size: 13px;
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 36px;
            }

            nav ul {
                gap: 15px;
            }

            nav ul li a {
                font-size: 11px;
            }

            article h2 {
                font-size: 26px;
            }

            article h3 {
                font-size: 20px;
            }

            .links-section ul {
                columns: 1;
            }

            .transition-section {
                padding: 30px 20px;
            }

            .links-section {
                padding: 40px 20px;
            }

            main {
                padding: 40px 20px;
            }
        }

        @media (max-width: 480px) {
            h1 {
                font-size: 28px;
            }

            nav ul {
                flex-direction: column;
                gap: 10px;
                align-items: center;
            }

            article p {
                font-size: 15px;
            }

            .links-section h3 {
                font-size: 20px;
            }
        }