* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #2563eb;
            --secondary-color: #dc2626;
            --accent-color: #f59e0b;
            --text-color: #1f2937;
            --light-bg: #f8fafc;
            --dark-bg: #1e293b;
            --border-radius: 8px;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: var(--light-bg);
        }
        header {
            background: linear-gradient(135deg, var(--dark-bg) 0%, #334155 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: bold;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .logo i {
            color: var(--accent-color);
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
        }
        .nav-desktop a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }
        .mobile-nav-toggle {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .mobile-nav-toggle {
                display: block;
            }
        }
        .nav-mobile {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--dark-bg);
            padding: 1rem;
            flex-direction: column;
            gap: 1rem;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: white;
            text-decoration: none;
            padding: 0.75rem 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .nav-mobile a:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            max-width: 1200px;
            margin: 1rem auto;
            padding: 0 1rem;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-section {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 1rem;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex: 1;
            padding: 0.75rem 1rem;
            border: 2px solid var(--primary-color);
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }
        .search-button {
            background: var(--primary-color);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-button:hover {
            background: #1d4ed8;
        }
        main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem 2rem;
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding: 2rem 0;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border-radius: var(--border-radius);
        }
        .article-header h1 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 2rem;
            font-size: 0.9rem;
            opacity: 0.9;
        }
        .content-section {
            background: white;
            padding: 2rem;
            margin-bottom: 2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .content-section:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
        }
        .content-section h2 {
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--accent-color);
            display: inline-block;
        }
        .content-section h3 {
            color: var(--secondary-color);
            margin: 1.5rem 0 1rem;
        }
        .content-section p {
            margin-bottom: 1rem;
            text-align: justify;
        }
        .highlight {
            background: linear-gradient(120deg, #fef3c7 0%, #fef3c7 100%);
            padding: 1.5rem;
            border-left: 4px solid var(--accent-color);
            margin: 1.5rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: var(--light-bg);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            text-align: center;
            border: 1px solid #e2e8f0;
            transition: var(--transition);
        }
        .stat-card:hover {
            border-color: var(--primary-color);
            transform: scale(1.05);
        }
        .stat-number {
            font-size: 2rem;
            font-weight: bold;
            color: var(--primary-color);
            display: block;
        }
        .stat-label {
            color: var(--text-color);
            font-size: 0.9rem;
        }
        .article-image {
            width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            margin: 1.5rem 0;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .article-image:hover {
            transform: scale(1.02);
        }
        .tab-container {
            margin: 2rem 0;
        }
        .tab-buttons {
            display: flex;
            border-bottom: 2px solid #e2e8f0;
            margin-bottom: 1rem;
        }
        .tab-button {
            padding: 1rem 2rem;
            background: none;
            border: none;
            cursor: pointer;
            font-weight: 500;
            color: var(--text-color);
            transition: var(--transition);
            border-bottom: 3px solid transparent;
        }
        .tab-button.active {
            color: var(--primary-color);
            border-bottom-color: var(--primary-color);
        }
        .tab-button:hover {
            color: var(--primary-color);
        }
        .tab-content {
            display: none;
            padding: 1.5rem;
            background: var(--light-bg);
            border-radius: 0 var(--border-radius) var(--border-radius) var(--border-radius);
        }
        .tab-content.active {
            display: block;
            animation: fadeIn 0.5s ease;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .user-interaction {
            background: white;
            padding: 2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin: 3rem 0;
        }
        .rating-section, .comment-section {
            margin-bottom: 2rem;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 1.5rem;
            color: #d1d5db;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--accent-color);
        }
        .comment-form textarea {
            width: 100%;
            padding: 1rem;
            border: 2px solid #e2e8f0;
            border-radius: var(--border-radius);
            resize: vertical;
            min-height: 120px;
            margin-bottom: 1rem;
            font-family: inherit;
        }
        .submit-button {
            background: var(--primary-color);
            color: white;
            border: none;
            padding: 0.75rem 2rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 500;
            transition: var(--transition);
        }
        .submit-button:hover {
            background: #1d4ed8;
            transform: translateY(-2px);
        }
        .footer-links {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 1rem;
        }
        .web-link {
            background: white;
            padding: 1rem;
            margin-bottom: 0.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateX(5px);
            border-left: 4px solid var(--primary-color);
        }
        .web-link a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
        }
        .web-link a:hover {
            text-decoration: underline;
        }
        footer {
            background: var(--dark-bg);
            color: white;
            padding: 3rem 0 1rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h3 {
            color: var(--accent-color);
            margin-bottom: 1rem;
        }
        .footer-section a {
            color: #cbd5e1;
            text-decoration: none;
            display: block;
            margin-bottom: 0.5rem;
            transition: var(--transition);
        }
        .footer-section a:hover {
            color: white;
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #374151;
            color: #9ca3af;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .article-header h1 {
                font-size: 2rem;
            }
            .content-section {
                padding: 1.5rem;
            }
            .tab-buttons {
                flex-direction: column;
            }
            .tab-button {
                text-align: left;
                border-bottom: 1px solid #e2e8f0;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .article-header h1 {
                font-size: 1.75rem;
            }
            .content-section {
                padding: 1rem;
            }
            .header-container {
                flex-wrap: wrap;
            }
        }