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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #2c2c2c;
            background-color: #f5f5f5;
        }

        header {
            background-color: #8B4513;
            padding: 1.5rem 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 {
            color: #fff;
            font-size: 1.8rem;
            font-weight: 700;
            text-decoration: none;
            letter-spacing: 1px;
        }

        nav {
            background-color: #D2691E;
        }

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

        nav ul li {
            margin: 0;
        }

        nav ul li a {
            display: block;
            padding: 1rem 1.5rem;
            color: #fff;
            text-decoration: none;
            transition: background-color 0.3s ease;
        }

        nav ul li a:hover {
            background-color: #A0522D;
        }

        main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 40px 20px;
            background-color: #fff;
            min-height: calc(100vh - 300px);
        }

        h1 {
            color: #8B4513;
            font-size: 2.5rem;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 3px solid #D2691E;
        }

        article h2 {
            color: #8B4513;
            font-size: 2rem;
            margin-top: 2rem;
            margin-bottom: 1rem;
        }

        article h3 {
            color: #A0522D;
            font-size: 1.5rem;
            margin-top: 1.5rem;
            margin-bottom: 0.8rem;
        }

        article h4 {
            color: #A0522D;
            font-size: 1.2rem;
            margin-top: 1.2rem;
            margin-bottom: 0.6rem;
        }

        article p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }

        .transition-section {
            background-color: #FFF8DC;
            padding: 2rem;
            margin: 2rem 0;
            border-left: 4px solid #D2691E;
        }

        .transition-section p {
            margin-bottom: 1rem;
        }

        .transition-section p:last-child {
            margin-bottom: 0;
        }

        .links-section {
            background-color: #FFF8DC;
            padding: 2.5rem;
            margin-top: 3rem;
            border-radius: 8px;
            border: 2px solid #D2691E;
        }

        .links-section h2 {
            color: #8B4513;
            font-size: 2rem;
            margin-bottom: 2rem;
            text-align: center;
        }

        .links-section h3 {
            color: #8B4513;
            font-size: 1.4rem;
            margin-top: 2rem;
            margin-bottom: 1rem;
        }

        .links-section ul {
            list-style: none;
            column-count: 2;
            column-gap: 2rem;
            margin-bottom: 1.5rem;
        }

        .links-section ul li {
            break-inside: avoid;
            margin-bottom: 0.8rem;
        }

        .links-section ul li a {
            color: #A0522D;
            text-decoration: none;
            transition: color 0.3s ease;
            display: inline-block;
            padding: 0.3rem 0;
        }

        .links-section ul li a:hover {
            color: #8B4513;
            text-decoration: underline;
        }

        .links-section ul li a::before {
            content: "→ ";
            color: #D2691E;
            font-weight: bold;
        }

        footer {
            background-color: #8B4513;
            color: #fff;
            padding: 2rem 0;
            margin-top: 3rem;
        }

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

        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                text-align: center;
            }

            .logo {
                font-size: 1.5rem;
                margin-bottom: 0.5rem;
            }

            nav ul {
                flex-direction: column;
                padding: 0;
            }

            nav ul li a {
                padding: 0.8rem 1rem;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }

            h1 {
                font-size: 2rem;
            }

            article h2 {
                font-size: 1.6rem;
            }

            article h3 {
                font-size: 1.3rem;
            }

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

            main {
                padding: 20px 15px;
            }

            .links-section {
                padding: 1.5rem;
            }

            .transition-section {
                padding: 1.5rem;
            }
        }

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

            article h2 {
                font-size: 1.4rem;
            }

            article h3 {
                font-size: 1.2rem;
            }

            nav ul li a {
                padding: 0.7rem;
            }
        }