:root {
            --primary-dark: #2c3e50;
            --primary-accent: #e67e22;
            --secondary-accent: #3498db;
            --text-light: #ecf0f1;
            --text-dark: #2c3e50;
            --bg-light: #f9f9f9;
            --bg-dark: #1a252f;
            --border-color: #bdc3c7;
            --success: #27ae60;
            --warning: #f39c12;
            --danger: #e74c3c;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --radius: 8px;
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        * {
            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: 1.8;
            color: var(--text-dark);
            background-color: var(--bg-light);
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--secondary-accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-accent);
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .site-header {
            background-color: var(--bg-dark);
            color: var(--text-light);
            padding: 1rem 0;
            box-shadow: var(--shadow);
            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: var(--primary-accent);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo a:hover {
            color: var(--text-light);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: var(--text-light);
            font-weight: 600;
            padding: 0.5rem 0;
            border-bottom: 2px solid transparent;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--primary-accent);
            border-bottom-color: var(--primary-accent);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text-light);
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #f1f1f1;
            padding: 0.8rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin-left: 0.5rem;
            color: var(--border-color);
        }
        .main-content {
            flex: 1;
            padding: 2rem 0;
        }
        .article-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .article-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body {
            background-color: white;
            padding: 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .article-header {
            margin-bottom: 2.5rem;
            border-bottom: 2px solid var(--border-color);
            padding-bottom: 1.5rem;
        }
        .article-header h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            color: var(--primary-dark);
            margin-bottom: 1rem;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            color: #7f8c8d;
            font-size: 0.95rem;
        }
        .article-meta i {
            margin-right: 0.5rem;
        }
        .article-content h2 {
            font-size: 2rem;
            color: var(--primary-dark);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--border-color);
        }
        .article-content h3 {
            font-size: 1.6rem;
            color: var(--secondary-accent);
            margin: 2rem 0 1rem;
        }
        .article-content p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .article-content strong {
            color: var(--primary-accent);
            font-weight: 700;
        }
        .article-content em {
            font-style: italic;
            color: #555;
        }
        .highlight-box {
            background-color: #f8f9fa;
            border-left: 4px solid var(--secondary-accent);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .featured-image {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: var(--radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background-color: white;
            padding: 1.8rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            color: var(--primary-dark);
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--border-color);
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 0.8rem;
            border: 1px solid var(--border-color);
            border-right: none;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--secondary-accent);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: var(--primary-accent);
        }
        .rating-widget form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .rating-widget .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
        }
        .rating-widget .stars .selected,
        .rating-widget .stars:hover .star {
            color: var(--warning);
        }
        .rating-widget .stars .star:hover ~ .star {
            color: #ddd;
        }
        .rating-widget input,
        .rating-widget textarea,
        .comment-form input,
        .comment-form textarea {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            font-family: inherit;
            font-size: 1rem;
        }
        .rating-widget button,
        .comment-form button {
            background-color: var(--success);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: var(--radius);
            font-weight: 600;
            transition: var(--transition);
        }
        .rating-widget button:hover,
        .comment-form button:hover {
            background-color: #219653;
        }
        .comments-section {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px solid var(--border-color);
        }
        .comment-form {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
            margin-bottom: 2.5rem;
        }
        .comment-form .full-width {
            grid-column: 1 / -1;
        }
        @media (max-width: 576px) {
            .comment-form {
                grid-template-columns: 1fr;
            }
        }
        .internal-links {
            background-color: var(--primary-dark);
            padding: 2.5rem 0;
            color: var(--text-light);
        }
        .internal-links .container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            margin-bottom: 0.8rem;
        }
        .web-link a {
            color: #bdc3c7;
        }
        .web-link a:hover {
            color: var(--primary-accent);
        }
        .site-footer {
            background-color: var(--bg-dark);
            color: var(--text-light);
            text-align: center;
            padding: 2rem 0;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 2rem;
            margin-bottom: 1.5rem;
        }
        .copyright {
            font-size: 0.9rem;
            color: #95a5a6;
        }
        @media (max-width: 768px) {
            html {
                font-size: 14px;
            }
            .hamburger {
                display: block;
            }
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: var(--bg-dark);
                padding: 1rem 0;
                box-shadow: var(--shadow);
            }
            .main-nav.active ul {
                display: flex;
            }
            .main-nav ul li {
                text-align: center;
                padding: 0.7rem 0;
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
            .article-body {
                padding: 1.5rem;
            }
        }