* {
            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: linear-gradient(to bottom, #f0f8f0 0%, #ffffff 100%);
            min-height: 100vh;
        }

        header {
            background: linear-gradient(135deg, #009900 0%, #00b300 100%);
            color: white;
            padding: 2rem 0;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }

        header h1 {
            text-align: center;
            font-size: 2.5rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
            margin: 0;
            padding: 0 1rem;
        }

        nav {
            background-color: #009900;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        nav ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0;
        }

        nav ul li {
            position: relative;
        }

        nav ul li a {
            display: block;
            color: white;
            text-decoration: none;
            padding: 1rem 1.2rem;
            font-weight: 500;
            transition: background-color 0.3s ease;
        }

        nav ul li a:hover {
            background-color: #007700;
        }

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

        article {
            background: white;
            padding: 2.5rem;
            margin-bottom: 2rem;
            border-radius: 12px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
            border-left: 5px solid #009900;
        }

        article h2 {
            color: #009900;
            margin-bottom: 1.5rem;
            font-size: 2rem;
            border-bottom: 3px solid #e8f5e8;
            padding-bottom: 0.5rem;
        }

        article h3 {
            color: #00b300;
            margin-top: 1.5rem;
            margin-bottom: 1rem;
            font-size: 1.5rem;
        }

        article p {
            margin-bottom: 1.2rem;
            text-align: justify;
            color: #444;
        }

        .transition-section {
            background: linear-gradient(135deg, #e8f5e8 0%, #f0f8f0 100%);
            padding: 2rem 2.5rem;
            margin-bottom: 2rem;
            border-radius: 12px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.06);
            border: 2px solid #d0e8d0;
        }

        .transition-section p {
            color: #333;
            line-height: 1.8;
            margin-bottom: 1rem;
        }

        .links-section {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
            margin-bottom: 2rem;
        }

        .links-section h2 {
            color: #009900;
            margin-bottom: 2rem;
            font-size: 2rem;
            text-align: center;
            border-bottom: 3px solid #e8f5e8;
            padding-bottom: 1rem;
        }

        .links-section h3 {
            color: #00b300;
            margin-top: 2rem;
            margin-bottom: 1rem;
            font-size: 1.4rem;
            padding-left: 0.5rem;
            border-left: 4px solid #009900;
        }

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 0.8rem;
            margin-bottom: 1.5rem;
        }

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

        .links-section ul li a {
            color: #006600;
            text-decoration: none;
            padding: 0.6rem 0.8rem;
            display: block;
            border-radius: 6px;
            transition: all 0.3s ease;
            border-left: 3px solid transparent;
        }

        .links-section ul li a:hover {
            background-color: #e8f5e8;
            border-left-color: #009900;
            padding-left: 1.2rem;
        }

        footer {
            background: linear-gradient(135deg, #006600 0%, #009900 100%);
            color: white;
            text-align: center;
            padding: 2rem 1rem;
            margin-top: 3rem;
            box-shadow: 0 -4px 6px rgba(0,0,0,0.1);
        }

        footer p {
            margin: 0.5rem 0;
        }

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

            nav ul {
                flex-direction: column;
            }

            nav ul li {
                width: 100%;
            }

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

            article {
                padding: 1.5rem;
            }

            article h2 {
                font-size: 1.6rem;
            }

            .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 h1 {
                font-size: 1.5rem;
            }

            article h2 {
                font-size: 1.4rem;
            }

            article h3 {
                font-size: 1.2rem;
            }

            .links-section h2 {
                font-size: 1.5rem;
            }

            .links-section h3 {
                font-size: 1.2rem;
            }
        }