* { 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-color: #f8f9fa;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a { color: #2c5282; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #1a365d; }
        img { max-width: 100%; height: auto; display: block; }
        h1, h2, h3, h4 { font-weight: 700; line-height: 1.3; margin-bottom: 1rem; color: #1a202c; }
        h1 { font-size: 2.8rem; margin-top: 1.5rem; }
        h2 { font-size: 2.2rem; margin-top: 2.5rem; padding-bottom: 0.5rem; border-bottom: 2px solid #e2e8f0; }
        h3 { font-size: 1.8rem; margin-top: 2rem; color: #2d3748; }
        h4 { font-size: 1.4rem; margin-top: 1.5rem; color: #4a5568; }
        p { margin-bottom: 1.5rem; text-align: justify; }
        .lead { font-size: 1.25rem; font-weight: 300; color: #4a5568; }
        .highlight { background-color: #fffacd; padding: 0.2em 0.4em; border-radius: 3px; }
        .bold { font-weight: 700; color: #1a202c; }
        .updated { font-size: 0.9rem; color: #718096; font-style: italic; margin-bottom: 2rem; }
        .emoji { font-size: 1.2em; margin-right: 0.3em; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        main { flex: 1; }
        header { background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%); 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; }
        .logo a { font-size: 2rem; font-weight: 800; color: #63b3ed; text-transform: uppercase; letter-spacing: 1px; }
        .logo a:hover { color: #90cdf4; }
        .nav-desktop { display: flex; }
        .nav-desktop ul { display: flex; list-style: none; }
        .nav-desktop li { margin-left: 2rem; }
        .nav-desktop a { color: #cbd5e0; font-weight: 500; padding: 0.5rem 0; position: relative; }
        .nav-desktop a:hover { color: #fff; }
        .nav-desktop a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: #63b3ed; transition: width 0.3s; }
        .nav-desktop a:hover::after { width: 100%; }
        .hamburger { display: none; font-size: 1.8rem; background: none; border: none; color: white; cursor: pointer; }
        .nav-mobile { display: none; position: absolute; top: 100%; left: 0; width: 100%; background: #2d3748; box-shadow: 0 5px 10px rgba(0,0,0,0.2); }
        .nav-mobile.active { display: block; }
        .nav-mobile ul { list-style: none; padding: 1rem 0; }
        .nav-mobile li { text-align: center; margin: 0; }
        .nav-mobile a { display: block; padding: 1rem; color: #cbd5e0; border-bottom: 1px solid #4a5568; }
        .nav-mobile a:hover { background-color: #4a5568; color: white; }
        .breadcrumb { padding: 1rem 0; background-color: #edf2f7; font-size: 0.9rem; }
        .breadcrumb ol { display: flex; flex-wrap: wrap; list-style: none; }
        .breadcrumb li:not(:last-child)::after { content: '/'; margin: 0 10px; color: #a0aec0; }
        .breadcrumb a { color: #4a5568; }
        .breadcrumb a:hover { color: #2c5282; }
        .content-wrapper { display: grid; grid-template-columns: 1fr 300px; gap: 3rem; margin: 3rem 0; }
        @media (max-width: 992px) { .content-wrapper { grid-template-columns: 1fr; } }
        article { background: white; padding: 2.5rem; border-radius: 10px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
        .featured-img { margin: 2rem 0; border-radius: 8px; overflow: hidden; box-shadow: 0 8px 20px rgba(0,0,0,0.1); }
        .featured-img figcaption { text-align: center; font-size: 0.9rem; color: #718096; padding: 0.5rem; background: #f7fafc; }
        aside { background: white; padding: 1.5rem; border-radius: 10px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); align-self: start; }
        .sidebar-widget { margin-bottom: 2rem; }
        .sidebar-widget h3 { font-size: 1.3rem; margin-top: 0; border-bottom: 1px solid #e2e8f0; padding-bottom: 0.5rem; }
        .related-links ul { list-style: none; }
        .related-links li { margin-bottom: 0.8rem; padding-bottom: 0.8rem; border-bottom: 1px dashed #e2e8f0; }
        .related-links a::before { content: '🔗'; margin-right: 8px; font-size: 0.9em; }
        .interactive-form { background: #f0f9ff; padding: 1.5rem; border-radius: 8px; border-left: 4px solid #4299e1; margin: 2rem 0; }
        .interactive-form h3 { margin-top: 0; color: #2b6cb0; }
        .form-group { margin-bottom: 1rem; }
        label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: #4a5568; }
        input, textarea, select { width: 100%; padding: 0.75rem; border: 1px solid #cbd5e0; border-radius: 4px; font-family: inherit; font-size: 1rem; }
        button { background: #4299e1; color: white; border: none; padding: 0.75rem 1.5rem; border-radius: 4px; font-weight: 600; cursor: pointer; transition: background 0.3s; }
        button:hover { background: #3182ce; }
        .rating { display: flex; align-items: center; gap: 1rem; }
        .stars { display: flex; gap: 5px; }
        .stars i { color: #e2e8f0; cursor: pointer; font-size: 1.5rem; transition: color 0.2s; }
        .stars i:hover, .stars i.active { color: #f6ad55; }
        footer { background: #1a202c; color: #cbd5e0; padding: 3rem 0 1.5rem; margin-top: 3rem; }
        .footer-container { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 2rem; }
        .footer-section { flex: 1; min-width: 250px; }
        .footer-section h3 { color: #fff; font-size: 1.3rem; margin-bottom: 1.5rem; }
        friend-link { display: block; margin-bottom: 0.8rem; }
        friend-link a { color: #90cdf4; }
        friend-link a:hover { color: #63b3ed; text-decoration: underline; }
        .copyright { text-align: center; margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid #4a5568; font-size: 0.9rem; color: #a0aec0; }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .header-container { flex-wrap: wrap; }
            .nav-desktop { display: none; }
            .hamburger { display: block; }
            article, aside { padding: 1.5rem; }
            .content-wrapper { gap: 2rem; }
        }