* {
            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: #f9f9f9;
            padding-top: 80px; 
        }
        a {
            text-decoration: none;
            color: #2c3e50;
        }
        ul {
            list-style: none;
        }
        header {
            background-color: #2c3e50;
            color: white;
            padding: 1rem 2rem;
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: bold;
            color: #1abc9c;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            color: #16a085;
            transform: scale(1.05);
            transition: transform 0.3s ease;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            gap: 1.5rem;
        }
        .nav-links a {
            color: white;
            font-weight: 500;
            padding: 0.5rem;
            border-radius: 4px;
        }
        .nav-links a:hover {
            background-color: #1abc9c;
            color: white;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: white;
        }
        .breadcrumb {
            padding: 0.5rem 2rem;
            background-color: #ecf0f1;
            font-size: 0.9rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: #3498db;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 2rem;
            background-color: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            overflow: hidden;
        }
        article {
            padding: 2rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #2c3e50;
            margin-bottom: 1.5rem;
            border-bottom: 3px solid #1abc9c;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: #34495e;
            margin: 2rem 0 1rem;
            padding-top: 1rem;
        }
        h3 {
            font-size: 1.5rem;
            color: #16a085;
            margin: 1.5rem 0 0.8rem;
        }
        h4 {
            font-size: 1.2rem;
            color: #27ae60;
            margin: 1rem 0 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
            line-height: 1.8;
        }
        .highlight {
            background-color: #f8f9fa;
            border-left: 4px solid #1abc9c;
            padding: 1rem;
            margin: 1.5rem 0;
            font-style: italic;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 2rem auto;
            border-radius: 8px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
            transition: transform 0.3s ease;
        }
        img:hover {
            transform: scale(1.02);
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        strong {
            color: #e74c3c;
            font-weight: 700;
        }
        .interactive-forms {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
            padding: 2rem;
            background-color: #ecf0f1;
            border-radius: 10px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 0.5rem;
            font-weight: bold;
            color: #2c3e50;
        }
        .form-group input, .form-group textarea, .form-group select {
            padding: 0.8rem;
            border: 1px solid #bdc3c7;
            border-radius: 5px;
            font-size: 1rem;
            margin-bottom: 1rem;
        }
        .form-group button {
            padding: 0.8rem 1.5rem;
            background-color: #3498db;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1rem;
            transition: background-color 0.3s ease;
        }
        .form-group button:hover {
            background-color: #2980b9;
        }
        footer {
            background-color: #2c3e50;
            color: white;
            padding: 3rem 2rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h3 {
            color: #1abc9c;
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }
        friend-link {
            display: block;
            margin: 0.5rem 0;
        }
        friend-link a {
            color: #bdc3c7;
            padding: 0.3rem 0;
            display: block;
        }
        friend-link a:hover {
            color: #1abc9c;
            padding-left: 5px;
            transition: all 0.3s ease;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #34495e;
            margin-top: 2rem;
            font-size: 0.9rem;
            color: #bdc3c7;
        }
        @media (max-width: 768px) {
            body {
                padding-top: 70px;
            }
            .hamburger {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: #2c3e50;
                padding: 1rem;
                box-shadow: 0 5px 10px rgba(0,0,0,0.2);
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links a {
                padding: 1rem;
                text-align: center;
            }
            .header-container {
                padding: 0 1rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            main {
                padding: 0 1rem;
            }
            article {
                padding: 1.5rem;
            }
            .interactive-forms {
                grid-template-columns: 1fr;
                padding: 1.5rem;
            }
        }