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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f5f5f5;
        }

        .top-bar {
            background-color: #2c2c2c;
            color: #fff;
            padding: 10px 0;
            font-size: 14px;
        }

        .top-bar .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: flex-end;
            align-items: center;
            flex-wrap: wrap;
        }

        .top-bar a {
            color: #fff;
            text-decoration: none;
            margin-left: 20px;
            transition: color 0.3s;
        }

        .top-bar a:hover {
            color: #b6d543;
        }

        header {
            background-color: #fff;
            padding: 20px 0;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }

        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 28px;
            font-weight: bold;
            color: #2c2c2c;
            text-decoration: none;
        }

        nav {
            background-color: #fff;
            border-top: 1px solid #e0e0e0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

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

        nav ul li {
            position: relative;
        }

        nav ul li a {
            display: block;
            padding: 15px 20px;
            color: #333;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s;
        }

        nav ul li a:hover {
            color: #b6d543;
            background-color: #f9f9f9;
        }

        .main-content {
            max-width: 1200px;
            margin: 40px auto;
            padding: 0 20px;
        }

        h1 {
            font-size: 42px;
            color: #2c2c2c;
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 3px solid #b6d543;
        }

        article {
            background-color: #fff;
            padding: 40px;
            margin-bottom: 40px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.08);
        }

        article h2 {
            font-size: 32px;
            color: #2c2c2c;
            margin: 30px 0 20px 0;
        }

        article h3 {
            font-size: 26px;
            color: #333;
            margin: 25px 0 15px 0;
        }

        article h4 {
            font-size: 22px;
            color: #444;
            margin: 20px 0 12px 0;
        }

        article p {
            font-size: 16px;
            margin-bottom: 20px;
            color: #555;
            text-align: justify;
        }

        .transition-section {
            background-color: #fff;
            padding: 40px;
            margin-bottom: 40px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.08);
        }

        .transition-section p {
            font-size: 16px;
            color: #555;
            margin-bottom: 20px;
            text-align: justify;
        }

        .links-section {
            background-color: #fff;
            padding: 40px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.08);
        }

        .links-section h3 {
            font-size: 24px;
            color: #2c2c2c;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #b6d543;
        }

        .links-section ul {
            list-style: none;
            column-count: 2;
            column-gap: 40px;
            margin-bottom: 30px;
        }

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

        .links-section ul li a {
            color: #2c2c2c;
            text-decoration: none;
            display: inline-block;
            padding: 5px 0;
            transition: all 0.3s;
            position: relative;
        }

        .links-section ul li a:before {
            content: "→";
            margin-right: 8px;
            color: #b6d543;
            font-weight: bold;
        }

        .links-section ul li a:hover {
            color: #b6d543;
            padding-left: 10px;
        }

        footer {
            background-color: #2c2c2c;
            color: #fff;
            padding: 40px 0 20px 0;
            margin-top: 60px;
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            text-align: center;
        }

        .footer-container p {
            margin-bottom: 10px;
            color: #ccc;
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 32px;
            }

            article h2 {
                font-size: 26px;
            }

            article h3 {
                font-size: 22px;
            }

            article, .transition-section, .links-section {
                padding: 25px;
            }

            nav ul {
                flex-direction: column;
            }

            nav ul li a {
                padding: 12px 20px;
            }

            .links-section ul {
                column-count: 1;
            }

            .top-bar .container {
                justify-content: center;
            }

            .top-bar a {
                margin: 5px 10px;
            }
        }

        @media (max-width: 480px) {
            h1 {
                font-size: 26px;
            }

            article, .transition-section, .links-section {
                padding: 20px;
            }

            article p, .transition-section p {
                font-size: 15px;
            }
        }