:root {
            --primary: #1a365d;
            --secondary: #d4af37;
            --accent: #c53030;
            --light: #f7fafc;
            --dark: #2d3748;
            --gray: #718096;
            --transition: all 0.3s ease;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --radius: 8px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background-color: #fff;
            overflow-x: hidden;
        }
        header {
            background: linear-gradient(135deg, var(--primary) 0%, #2a4365 100%);
            color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 1rem 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo a i {
            color: var(--secondary);
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
            transition: var(--transition);
        }
        nav a:hover {
            color: var(--secondary);
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--secondary);
            transition: var(--transition);
        }
        nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            background: var(--light);
            padding: 0.8rem 2rem;
            border-bottom: 1px solid #e2e8f0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            list-style: none;
            gap: 0.5rem;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: var(--gray);
        }
        .container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .container {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            border-radius: var(--radius);
            padding: 2.5rem;
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 1rem;
        }
        h2 {
            font-size: 1.8rem;
            color: var(--primary);
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #e2e8f0;
        }
        h3 {
            font-size: 1.4rem;
            color: var(--dark);
            margin: 1.8rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            color: var(--primary);
            font-weight: 600;
            background: linear-gradient(to right, #f0f4ff, #e6fffa);
            padding: 1.5rem;
            border-radius: var(--radius);
            border-left: 5px solid var(--secondary);
            margin-bottom: 2rem;
        }
        .highlight {
            background: #fffacd;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .keyword-link {
            color: var(--accent);
            font-weight: 600;
            text-decoration: none;
            border-bottom: 1px dashed var(--accent);
        }
        .keyword-link:hover {
            color: var(--primary);
            border-bottom-style: solid;
        }
        .image-container {
            margin: 2.5rem auto;
            text-align: center;
        }
        .article-img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 5px solid white;
        }
        .caption {
            margin-top: 0.8rem;
            font-style: italic;
            color: var(--gray);
            font-size: 0.9rem;
        }
        blockquote {
            background: linear-gradient(to right, #f7fafc, #edf2f7);
            border-left: 5px solid var(--secondary);
            padding: 1.5rem 2rem;
            margin: 2.5rem 0;
            font-style: italic;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        blockquote p {
            margin-bottom: 0;
            color: var(--primary);
            font-size: 1.1rem;
        }
        ul, ol {
            margin-left: 1.5rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            border-radius: var(--radius);
            padding: 1.5rem;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            font-size: 1.3rem;
            margin-top: 0;
            padding-bottom: 0.8rem;
            border-bottom: 2px solid var(--secondary);
            color: var(--primary);
        }
        .search-box {
            display: flex;
            margin-top: 1rem;
        }
        .search-box input {
            flex: 1;
            padding: 0.8rem;
            border: 1px solid #cbd5e0;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
        }
        .search-box button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 1.2rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: var(--accent);
        }
        .related-links ul {
            list-style: none;
            margin-left: 0;
        }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dotted #e2e8f0;
        }
        .related-links a {
            color: var(--dark);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            transition: var(--transition);
        }
        .related-links a:hover {
            color: var(--accent);
            padding-left: 5px;
        }
        .related-links i {
            color: var(--secondary);
        }
        .user-interaction {
            margin-top: 3rem;
            background: var(--light);
            border-radius: var(--radius);
            padding: 2rem;
        }
        .user-interaction h2 {
            border-bottom: none;
            margin-top: 0;
        }
        .rating {
            margin: 1.5rem 0;
            text-align: center;
        }
        .stars {
            font-size: 2rem;
            color: #e2e8f0;
            cursor: pointer;
            margin-bottom: 1rem;
        }
        .stars i {
            margin: 0 0.2rem;
            transition: var(--transition);
        }
        .stars i:hover,
        .stars i.active {
            color: #f6e05e;
        }
        .comment-form textarea,
        .comment-form input {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 1px solid #cbd5e0;
            border-radius: var(--radius);
            font-family: inherit;
        }
        .comment-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: var(--radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .comment-form button:hover {
            background: var(--accent);
            transform: translateY(-2px);
        }
        footer {
            background: var(--primary);
            color: white;
            padding: 3rem 2rem 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }
        .footer-links h4 {
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            color: var(--secondary);
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #cbd5e0;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius);
            padding: 1.5rem;
            margin-top: 2rem;
        }
        friend-link h4 {
            color: var(--secondary);
            margin-bottom: 1rem;
        }
        friend-link a {
            color: white;
            text-decoration: none;
            padding: 0.5rem 1rem;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            display: inline-block;
            margin: 0.3rem;
            transition: var(--transition);
        }
        friend-link a:hover {
            background: var(--accent);
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #4a5568;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-container {
                padding: 1rem;
            }
            nav ul {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: var(--primary);
                flex-direction: column;
                padding: 1rem;
                box-shadow: var(--shadow);
            }
            nav ul.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            .container {
                padding: 0 1rem;
                gap: 2rem;
            }
            article {
                padding: 1.5rem;
            }
            .footer-container {
                grid-template-columns: 1fr;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        article, .sidebar-widget {
            animation: fadeIn 0.8s ease;
        }