:root {
            --primary: #FF9800;
            --primary-dark: #F57C00;
            --secondary: #2196F3;
            --secondary-dark: #1976D2;
            --dark: #1A1A2E;
            --light: #F5F7FA;
            --text: #333333;
            --text-light: #666666;
            --success: #4CAF50;
            --warning: #FFC107;
            --danger: #F44336;
            --gray: #E0E0E0;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --border-radius: 8px;
        }
        * {
            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: var(--text);
            background-color: var(--light);
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--dark);
            color: white;
            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-family: 'Arial Black', sans-serif;
            font-size: 2rem;
            color: var(--primary);
            text-decoration: none;
            letter-spacing: 1px;
        }
        .logo span {
            color: var(--secondary);
        }
        .nav-desktop ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-desktop a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .nav-desktop a:hover {
            background-color: var(--primary);
            color: var(--dark);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--primary);
        }
        .nav-mobile {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background-color: var(--dark);
            padding: 1rem;
            box-shadow: var(--shadow);
            z-index: 999;
        }
        .nav-mobile.active {
            display: block;
        }
        .nav-mobile ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .nav-mobile a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.75rem;
            display: block;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .nav-mobile a:hover {
            background-color: var(--primary);
            color: var(--dark);
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #f0f0f0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--secondary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-container {
            margin: 2rem 0;
            padding: 1.5rem;
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-form input {
            flex: 1;
            padding: 0.75rem 1rem;
            border: 2px solid var(--gray);
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: var(--primary-dark);
        }
        main {
            padding: 2rem 0;
        }
        .article-header {
            margin-bottom: 2.5rem;
            text-align: center;
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: var(--dark);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            color: var(--text-light);
            font-size: 0.95rem;
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            flex-wrap: wrap;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
        }
        .article-content h2 {
            color: var(--secondary-dark);
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--gray);
            font-size: 1.8rem;
        }
        .article-content h3 {
            color: var(--primary-dark);
            margin: 1.8rem 0 0.8rem;
            font-size: 1.4rem;
        }
        .article-content p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .article-content .highlight {
            background-color: #FFF9E6;
            border-left: 4px solid var(--warning);
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .article-content ul, .article-content ol {
            margin: 1rem 0 1.5rem 2rem;
        }
        .article-content li {
            margin-bottom: 0.5rem;
        }
        .feature-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--border-radius);
            margin: 2rem auto;
            display: block;
            box-shadow: var(--shadow);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            border-radius: var(--border-radius);
            overflow: hidden;
        }
        .data-table th {
            background-color: var(--secondary);
            color: white;
            padding: 1rem;
            text-align: left;
        }
        .data-table td {
            padding: 1rem;
            border-bottom: 1px solid var(--gray);
        }
        .data-table tr:nth-child(even) {
            background-color: #f9f9f9;
        }
        .data-table tr:hover {
            background-color: #f1f8ff;
        }
        .quote {
            font-style: italic;
            border-left: 4px solid var(--primary);
            padding-left: 1.5rem;
            margin: 2rem 0;
            color: var(--text-light);
            font-size: 1.1rem;
        }
        .author {
            font-weight: bold;
            color: var(--dark);
            margin-top: 0.5rem;
        }
        .interactive-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .comment-section, .rating-section {
            background: white;
            padding: 2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .section-title {
            color: var(--dark);
            margin-bottom: 1.5rem;
            font-size: 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .rating-stars .star {
            font-size: 1.8rem;
            color: var(--gray);
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars .star.active,
        .rating-stars .star:hover {
            color: var(--warning);
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-group label {
            font-weight: 600;
            color: var(--text);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 0.75rem;
            border: 2px solid var(--gray);
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary);
            outline: none;
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0.75rem 1.5rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            align-self: flex-start;
        }
        .submit-btn:hover {
            background-color: var(--primary-dark);
        }
        .footer-links {
            background-color: #2D3047;
            padding: 2.5rem 0;
            margin-top: 3rem;
        }
        .web-link {
            display: inline-block;
            margin: 0.5rem 1rem 0.5rem 0;
        }
        .web-link a {
            color: var(--light);
            text-decoration: none;
            padding: 0.5rem 1rem;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .web-link a:hover {
            background-color: var(--primary);
            color: var(--dark);
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 2rem 0;
            text-align: center;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1.5rem;
        }
        .social-links {
            display: flex;
            gap: 1.5rem;
            font-size: 1.5rem;
        }
        .social-links a {
            color: white;
            transition: var(--transition);
        }
        .social-links a:hover {
            color: var(--primary);
        }
        .copyright {
            color: var(--gray);
            font-size: 0.9rem;
            line-height: 1.5;
        }
        @media (max-width: 992px) {
            .article-header h1 {
                font-size: 2.3rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-desktop {
                display: none;
            }
            .article-header h1 {
                font-size: 1.9rem;
            }
            .article-content {
                padding: 1.5rem;
            }
            .article-content h2 {
                font-size: 1.5rem;
            }
            .interactive-section {
                grid-template-columns: 1fr;
            }
            .header-container, .footer-container {
                padding: 0 15px;
            }
        }
        @media (max-width: 480px) {
            .article-header h1 {
                font-size: 1.6rem;
            }
            .article-meta {
                flex-direction: column;
                align-items: center;
                gap: 0.5rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input {
                border-radius: var(--border-radius);
                margin-bottom: 0.5rem;
            }
            .search-form button {
                border-radius: var(--border-radius);
                padding: 0.75rem;
            }
            .web-link {
                margin: 0.25rem 0.5rem 0.25rem 0;
            }
        }