* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { color: #dc3545; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #a71d2a; text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header { background-color: #0d223f; color: white; padding: 1rem 0; box-shadow: 0 4px 12px rgba(0,0,0,0.1); position: sticky; top: 0; z-index: 1000; }
        .header-container { display: flex; justify-content: space-between; align-items: center; }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(to right, #ff6b6b, #ffd166);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 1px;
        }
        .my-logo a { background: none; -webkit-text-fill-color: inherit; }
        nav ul { display: flex; list-style: none; }
        nav ul li { margin-left: 2rem; }
        nav ul li a { color: white; font-weight: 500; padding: 0.5rem 0; }
        .hamburger { display: none; font-size: 1.8rem; cursor: pointer; background: none; border: none; color: white; }
        .breadcrumb { background: #e9ecef; padding: 1rem; margin: 1rem 0; border-radius: 5px; font-size: 0.9rem; }
        .breadcrumb a { color: #555; }
        main { flex: 1; padding: 2rem 0; }
        article { background: white; border-radius: 12px; padding: 2.5rem; box-shadow: 0 6px 20px rgba(0,0,0,0.08); margin-bottom: 2rem; }
        h1 { color: #0d223f; font-size: 2.8rem; margin-bottom: 1.5rem; border-left: 6px solid #dc3545; padding-left: 1rem; }
        h2 { color: #1a3a6c; font-size: 2rem; margin-top: 2.5rem; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid #ffd166; }
        h3 { color: #2a4d8f; font-size: 1.6rem; margin-top: 2rem; margin-bottom: 0.8rem; }
        h4 { color: #3a5da0; font-size: 1.3rem; margin-top: 1.5rem; margin-bottom: 0.5rem; }
        p { margin-bottom: 1.5rem; text-align: justify; }
        .lead { font-size: 1.2rem; font-weight: 500; color: #555; background: #f8f9fa; padding: 1.5rem; border-radius: 8px; border-left: 4px solid #28a745; }
        .highlight { background-color: #fff9db; padding: 1rem; border-radius: 8px; border: 1px solid #ffd166; margin: 1.5rem 0; }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        .img-container { text-align: center; margin: 2.5rem 0; }
        .img-container img { border-radius: 10px; box-shadow: 0 8px 16px rgba(0,0,0,0.1); max-width: 800px; margin: 0 auto; }
        .img-caption { font-style: italic; color: #666; margin-top: 0.5rem; font-size: 0.95rem; }
        .interactive-section { background: #f1f8ff; border-radius: 10px; padding: 2rem; margin: 3rem 0; border: 1px solid #c2e0ff; }
        .interactive-section h3 { color: #0d6efd; }
        .form-group { margin-bottom: 1.2rem; }
        label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: #444; }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        input:focus, textarea:focus, select:focus { outline: none; border-color: #0d6efd; box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1); }
        button {
            background: linear-gradient(to right, #dc3545, #c82333);
            color: white;
            border: none;
            padding: 0.9rem 1.8rem;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 1rem;
        }
        button:hover { background: linear-gradient(to right, #c82333, #a71d2a); transform: translateY(-2px); box-shadow: 0 4px 8px rgba(220, 53, 69, 0.3); }
        .stars { display: flex; gap: 5px; margin: 1rem 0; }
        .star { font-size: 1.8rem; color: #ddd; cursor: pointer; transition: color 0.2s; }
        .star:hover, .star.active { color: #ffc107; }
        footer { background: #0d223f; color: #ccc; padding: 3rem 0 1.5rem; margin-top: auto; }
        .footer-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; }
        .footer-section h4 { color: #ffd166; margin-bottom: 1.2rem; font-size: 1.3rem; }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 0.7rem; }
        .footer-links a { color: #aaa; }
        .footer-links a:hover { color: white; }
        friend-link {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            padding: 0.5rem 1rem;
            border-radius: 4px;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
            border: 1px solid rgba(255,209,102,0.3);
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #2a4d8f;
            color: #8a9bb8;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            .hamburger { display: block; }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #1a3a6c;
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem;
                border-radius: 0 0 10px 10px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.2);
            }
            nav ul.active { display: flex; }
            nav ul li { margin: 0.8rem 0; margin-left: 0; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.7rem; }
            article { padding: 1.5rem; }
            .interactive-section { padding: 1.5rem; }
        }