:root {
            --primary-color: #1a365d;
            --secondary-color: #e53e3e;
            --accent-color: #f6ad55;
            --light-color: #f7fafc;
            --dark-color: #2d3748;
            --text-color: #4a5568;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --border-radius: 8px;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: #fff;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: var(--primary-color);
            color: var(--light-color);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo span {
            color: var(--accent-color);
        }
        .logo i {
            font-size: 2rem;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            font-weight: 600;
        }
        .main-nav a:hover {
            background-color: var(--secondary-color);
            color: white;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--light-color);
            padding: 1rem 0;
            border-bottom: 1px solid #e2e8f0;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin-left: 0.5rem;
            color: var(--dark-color);
        }
        .breadcrumb a:hover {
            color: var(--secondary-color);
        }
        .search-container {
            background: linear-gradient(135deg, var(--primary-color), #2a4365);
            padding: 2rem 0;
            text-align: center;
            color: white;
        }
        .search-box {
            max-width: 600px;
            margin: 0 auto;
        }
        .search-box h2 {
            margin-bottom: 1rem;
        }
        .search-form {
            display: flex;
            gap: 0;
        }
        .search-form input {
            flex: 1;
            padding: 0.8rem 1rem;
            border: none;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            font-weight: 600;
        }
        .search-form button:hover {
            background-color: #c53030;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background-color: white;
            padding: 2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .article-header h1 {
            color: var(--primary-color);
            font-size: 2.5rem;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            gap: 1rem;
            margin-bottom: 2rem;
            color: #718096;
            font-size: 0.9rem;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .featured-image {
            margin: 2rem 0;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-image figcaption {
            padding: 0.5rem;
            background-color: var(--light-color);
            font-size: 0.9rem;
            color: var(--dark-color);
            text-align: center;
        }
        .content-section {
            margin-bottom: 3rem;
        }
        .content-section h2 {
            color: var(--primary-color);
            font-size: 1.8rem;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent-color);
        }
        .content-section h3 {
            color: var(--dark-color);
            font-size: 1.4rem;
            margin: 1.5rem 0 1rem;
        }
        .content-section p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .content-section ul, .content-section ol {
            margin-bottom: 1.2rem;
            padding-left: 1.5rem;
        }
        .content-section li {
            margin-bottom: 0.5rem;
        }
        .highlight {
            background-color: #fffaf0;
            border-left: 4px solid var(--accent-color);
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .quote {
            font-style: italic;
            color: var(--dark-color);
            border-left: 4px solid var(--secondary-color);
            padding-left: 1.5rem;
            margin: 1.5rem 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background-color: var(--light-color);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            text-align: center;
            box-shadow: var(--shadow);
        }
        .stat-card i {
            font-size: 2rem;
            color: var(--secondary-color);
            margin-bottom: 1rem;
        }
        .stat-card h4 {
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background-color: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--primary-color);
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e2e8f0;
        }
        .related-links ul {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 0.8rem;
        }
        .related-links a {
            display: block;
            padding: 0.5rem;
            border-radius: var(--border-radius);
        }
        .related-links a:hover {
            background-color: var(--light-color);
            color: var(--secondary-color);
            padding-left: 1rem;
        }
        .comment-rating-section {
            margin-top: 3rem;
        }
        .comment-form, .rating-form {
            background-color: var(--light-color);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin-bottom: 2rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-group input, .form-group textarea, .form-group select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #cbd5e0;
            border-radius: var(--border-radius);
            font-family: inherit;
        }
        .form-group textarea {
            min-height: 150px;
            resize: vertical;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.5rem;
            color: #cbd5e0;
            margin: 0.5rem 0;
        }
        .rating-stars .star {
            cursor: pointer;
        }
        .rating-stars .star.active {
            color: var(--accent-color);
        }
        .submit-btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background-color: var(--secondary-color);
        }
        .site-footer {
            background-color: var(--dark-color);
            color: var(--light-color);
            padding: 3rem 0 1.5rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-logo a {
            font-size: 1.8rem;
            font-weight: 700;
            display: block;
            margin-bottom: 1rem;
        }
        .footer-links h4, friend-link h4 {
            color: var(--accent-color);
            margin-bottom: 1rem;
            font-size: 1.2rem;
        }
        .footer-links ul, friend-link ul {
            list-style: none;
        }
        .footer-links li, friend-link li {
            margin-bottom: 0.8rem;
        }
        .footer-links a, friend-link a {
            opacity: 0.8;
        }
        .footer-links a:hover, friend-link a:hover {
            opacity: 1;
            color: var(--accent-color);
        }
        friend-link {
            display: block;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a5568;
            opacity: 0.7;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--primary-color);
                flex-direction: column;
                padding: 1rem;
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: var(--transition);
            }
            .main-nav.active {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li {
                width: 100%;
            }
            .main-nav a {
                display: block;
                padding: 1rem;
                border-bottom: 1px solid #2d3748;
            }
            .article-header h1 {
                font-size: 2rem;
            }
        }