* {
            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;
        }

        .wrapper {
            max-width: 1200px;
            margin: 0 auto;
            background: #fff;
        }

        header {
            background: linear-gradient(135deg, #1a5490 0%, #2c7ac4 100%);
            color: white;
            padding: 20px 30px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }

        .logo {
            font-size: 1.8em;
            font-weight: 700;
            margin-bottom: 15px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        nav {
            background: #2c3e50;
            padding: 0;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }

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

        nav ul li {
            position: relative;
        }

        nav ul li a {
            display: block;
            padding: 15px 20px;
            color: #ecf0f1;
            text-decoration: none;
            transition: background 0.3s ease;
            font-size: 0.95em;
            font-weight: 500;
        }

        nav ul li a:hover,
        nav ul li a.active {
            background: #34495e;
        }

        main {
            padding: 40px 30px;
        }

        h1 {
            color: #1a5490;
            font-size: 2.2em;
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 3px solid #2c7ac4;
        }

        article {
            margin-bottom: 40px;
            line-height: 1.8;
        }

        article h2 {
            color: #2c3e50;
            font-size: 1.8em;
            margin: 30px 0 15px;
        }

        article h3 {
            color: #34495e;
            font-size: 1.4em;
            margin: 25px 0 12px;
        }

        article h4 {
            color: #455a64;
            font-size: 1.2em;
            margin: 20px 0 10px;
        }

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

        .transition-section {
            background: #f8f9fa;
            padding: 30px;
            margin: 40px 0;
            border-left: 4px solid #2c7ac4;
            border-radius: 4px;
        }

        .links-section {
            background: linear-gradient(to bottom, #ffffff 0%, #f5f8fa 100%);
            padding: 40px 30px;
            margin-top: 40px;
            border-top: 2px solid #e0e0e0;
        }

        .links-section h3 {
            color: #1a5490;
            font-size: 1.5em;
            margin-top: 30px;
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 2px solid #2c7ac4;
        }

        .links-section h3:first-child {
            margin-top: 0;
        }

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px 30px;
            margin-bottom: 30px;
        }

        .links-section ul li {
            padding: 8px 0;
        }

        .links-section ul li a {
            color: #2c7ac4;
            text-decoration: none;
            transition: color 0.3s ease, padding-left 0.3s ease;
            display: inline-block;
            position: relative;
            padding-left: 15px;
        }

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

        .links-section ul li a:hover {
            color: #1a5490;
            padding-left: 20px;
        }

        .links-section ul li a:hover:before {
            left: 5px;
        }

        footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 30px;
            margin-top: 50px;
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .footer-section h3 {
            color: #3498db;
            margin-bottom: 15px;
            font-size: 1.2em;
        }

        .footer-section ul {
            list-style: none;
        }

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

        .footer-section ul li a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-section ul li a:hover {
            color: #3498db;
        }

        @media (max-width: 768px) {
            header {
                padding: 15px 20px;
            }

            .logo {
                font-size: 1.4em;
            }

            nav ul {
                flex-direction: column;
            }

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

            main {
                padding: 25px 20px;
            }

            h1 {
                font-size: 1.8em;
            }

            article h2 {
                font-size: 1.5em;
            }

            article h3 {
                font-size: 1.2em;
            }

            .links-section ul {
                grid-template-columns: 1fr;
                gap: 8px;
            }

            .footer-content {
                grid-template-columns: 1fr;
                gap: 25px;
            }

            .transition-section {
                padding: 20px;
            }

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

        @media (max-width: 480px) {
            .logo {
                font-size: 1.2em;
            }

            h1 {
                font-size: 1.5em;
            }

            nav ul li a {
                padding: 10px 15px;
                font-size: 0.9em;
            }
        }