* {
            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;
        }

        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;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            font-size: 24px;
            font-weight: bold;
            color: #ff6600;
        }

        nav {
            background-color: #2c3e50;
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .menu {
            max-width: 1200px;
            margin: 0 auto;
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            padding: 0 20px;
        }

        .menu > li {
            position: relative;
        }

        .menu > li > a {
            display: block;
            padding: 15px 20px;
            color: #fff;
            text-decoration: none;
            transition: background-color 0.3s;
        }

        .menu > li > a:hover {
            background-color: #34495e;
        }

        .menu > li > div {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            background-color: #34495e;
            min-width: 220px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.2);
        }

        .menu > li:hover > div {
            display: block;
        }

        .menu ul {
            list-style: none;
        }

        .menu .subMenuItem a {
            display: block;
            padding: 12px 20px;
            color: #fff;
            text-decoration: none;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            transition: background-color 0.3s;
        }

        .menu .subMenuItem a:hover {
            background-color: #2c3e50;
        }

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

        h1 {
            color: #ff6600;
            font-size: 2.5em;
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 3px solid #ff6600;
        }

        article {
            background-color: #fff;
            padding: 40px;
            margin-bottom: 40px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        article h2 {
            color: #ff6600;
            margin-top: 30px;
            margin-bottom: 15px;
            font-size: 1.8em;
        }

        article h3 {
            color: #2c3e50;
            margin-top: 25px;
            margin-bottom: 12px;
            font-size: 1.4em;
        }

        article h4 {
            color: #34495e;
            margin-top: 20px;
            margin-bottom: 10px;
            font-size: 1.2em;
        }

        article p {
            margin-bottom: 15px;
            text-align: justify;
        }

        .transition-section {
            background-color: #fff;
            padding: 30px 40px;
            margin-bottom: 40px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        .transition-section p {
            margin-bottom: 15px;
        }

        .links-section {
            background-color: #fff;
            padding: 40px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        .links-section h2 {
            color: #ff6600;
            margin-bottom: 25px;
            font-size: 2em;
        }

        .links-section h3 {
            color: #2c3e50;
            margin-top: 30px;
            margin-bottom: 15px;
            font-size: 1.5em;
        }

        .links-section ul {
            list-style: none;
            column-count: 2;
            column-gap: 40px;
            margin-bottom: 25px;
        }

        .links-section li {
            break-inside: avoid;
            margin-bottom: 10px;
        }

        .links-section a {
            color: #2c3e50;
            text-decoration: none;
            display: inline-block;
            padding: 8px 0;
            transition: color 0.3s;
            border-bottom: 1px solid transparent;
        }

        .links-section a:hover {
            color: #ff6600;
            border-bottom-color: #ff6600;
        }

        footer {
            background-color: #2c3e50;
            color: #fff;
            padding: 40px 0 20px;
            margin-top: 60px;
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
        }

        .footer-block {
            flex: 1;
            min-width: 200px;
        }

        .footer-menu {
            list-style: none;
        }

        .footer-menu li {
            margin-bottom: 8px;
        }

        .footer-menu .first {
            font-weight: bold;
            font-size: 1.1em;
            margin-bottom: 15px;
            color: #ff6600;
        }

        .footer-menu a {
            color: #fff;
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-menu a:hover {
            color: #ff6600;
        }

        @media (max-width: 768px) {
            .menu {
                flex-direction: column;
            }

            .menu > li > div {
                position: static;
                box-shadow: none;
            }

            .menu > li > div {
                display: none;
            }

            .menu > li.active > div {
                display: block;
            }

            h1 {
                font-size: 2em;
            }

            article {
                padding: 25px;
            }

            .transition-section {
                padding: 20px 25px;
            }

            .links-section {
                padding: 25px;
            }

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

            .footer-container {
                flex-direction: column;
            }
        }

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

            article {
                padding: 20px;
            }

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