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

        body {
            font-family: Arial, Helvetica, sans-serif;
            color: #333;
            background: #f5f5f5;
            line-height: 1.6;
        }

        header {
            background: linear-gradient(135deg, #8b4513 0%, #a0522d 100%);
            padding: 2rem 1rem;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        .header-content {
            max-width: 1200px;
            margin: 0 auto;
            text-align: center;
            color: #fff;
        }

        .header-content h1 {
            font-size: 2.5rem;
            margin-bottom: 0.5rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }

        .header-subtitle {
            font-size: 1.1rem;
            opacity: 0.95;
        }

        nav {
            background: #6b3410;
            padding: 0;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .nav-content {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
        }

        .nav-content a {
            color: #fff;
            text-decoration: none;
            padding: 1rem 1.2rem;
            display: block;
            transition: background 0.3s ease;
            font-size: 0.95rem;
        }

        .nav-content a:hover {
            background: #8b4513;
        }

        main {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 1rem;
        }

        article {
            background: #fff;
            padding: 2.5rem;
            margin-bottom: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 15px rgba(0,0,0,0.08);
        }

        article h2 {
            color: #6b3410;
            margin: 2rem 0 1rem 0;
            font-size: 1.8rem;
        }

        article h3 {
            color: #8b4513;
            margin: 1.5rem 0 0.8rem 0;
            font-size: 1.4rem;
        }

        article p {
            margin-bottom: 1rem;
            text-align: justify;
        }

        article img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 1.5rem auto;
            border-radius: 4px;
        }

        .transition-section {
            background: #fff;
            padding: 2rem;
            margin-bottom: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 15px rgba(0,0,0,0.08);
        }

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

        .links-section {
            background: #fff;
            padding: 2.5rem;
            border-radius: 8px;
            box-shadow: 0 2px 15px rgba(0,0,0,0.08);
        }

        .links-section h2 {
            color: #6b3410;
            margin-bottom: 2rem;
            font-size: 2rem;
            text-align: center;
        }

        .links-section h3 {
            color: #8b4513;
            margin: 2rem 0 1rem 0;
            font-size: 1.5rem;
            border-bottom: 2px solid #ddd;
            padding-bottom: 0.5rem;
        }

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 0.8rem 2rem;
            margin-bottom: 2rem;
        }

        .links-section li {
            padding: 0.5rem 0;
        }

        .links-section a {
            color: #0066cc;
            text-decoration: none;
            transition: color 0.3s ease;
            display: inline-block;
        }

        .links-section a:hover {
            color: #8b4513;
            text-decoration: underline;
        }

        .links-section a::before {
            content: "→ ";
            color: #8b4513;
        }

        footer {
            background: #6b3410;
            color: #fff;
            text-align: center;
            padding: 2rem 1rem;
            margin-top: 3rem;
        }

        footer p {
            max-width: 1200px;
            margin: 0 auto;
        }

        @media (max-width: 768px) {
            .header-content h1 {
                font-size: 1.8rem;
            }

            .header-subtitle {
                font-size: 1rem;
            }

            .nav-content {
                flex-direction: column;
            }

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

            article {
                padding: 1.5rem;
            }

            article h2 {
                font-size: 1.5rem;
            }

            article h3 {
                font-size: 1.2rem;
            }

            .links-section {
                padding: 1.5rem;
            }

            .links-section ul {
                grid-template-columns: 1fr;
                gap: 0.5rem;
            }

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

        @media (max-width: 480px) {
            .header-content h1 {
                font-size: 1.5rem;
            }

            article {
                padding: 1rem;
            }

            .links-section {
                padding: 1rem;
            }

            .transition-section {
                padding: 1rem;
            }
        }