:root {
            --primary: #4CAF50;
            --secondary: #FF9800;
            --accent: #2196F3;
            --light: #f8f9fa;
            --dark: #2E7D32;
            --text: #333;
            --text-light: #666;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: var(--text);
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            max-width: 100%;
            overflow-x: hidden;
        }
        .header {
            background: linear-gradient(90deg, var(--dark) 0%, var(--primary) 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;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 2rem;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--secondary);
        }
        .logo:hover {
            transform: scale(1.05);
            transition: var(--transition);
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-link {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: 25px;
            transition: var(--transition);
        }
        .nav-link:hover {
            background: rgba(255,255,255,0.2);
            transform: translateY(-3px);
        }
        .nav-link.active {
            background: var(--secondary);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--dark);
            padding: 1rem;
            flex-direction: column;
            gap: 1rem;
            box-shadow: var(--shadow);
        }
        .nav-mobile.active {
            display: flex;
        }
        .breadcrumb {
            max-width: 1200px;
            margin: 1rem auto;
            padding: 0 2rem;
        }
        .breadcrumb-links {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .breadcrumb-links a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb-links a:hover {
            text-decoration: underline;
        }
        .search-container {
            max-width: 800px;
            margin: 2rem auto;
            padding: 0 2rem;
        }
        .search-form {
            display: flex;
            box-shadow: var(--shadow);
            border-radius: 50px;
            overflow: hidden;
        }
        .search-input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1.1rem;
            outline: none;
        }
        .search-button {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 0 2rem;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-button:hover {
            background: #e68900;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem;
            display: grid;
            grid-template-columns: 1fr;
            gap: 3rem;
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding: 2rem;
            background: white;
            border-radius: 15px;
            box-shadow: var(--shadow);
        }
        .article-title {
            font-size: 2.8rem;
            color: var(--dark);
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        .article-meta {
            color: var(--text-light);
            display: flex;
            justify-content: center;
            gap: 2rem;
            flex-wrap: wrap;
            margin-top: 1rem;
        }
        .article-content {
            background: white;
            padding: 3rem;
            border-radius: 15px;
            box-shadow: var(--shadow);
        }
        .content-section {
            margin-bottom: 3rem;
        }
        .section-title {
            font-size: 2rem;
            color: var(--dark);
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--secondary);
            display: inline-block;
        }
        .highlight-box {
            background: linear-gradient(135deg, #e3f2fd 0%, #f3e5f5 100%);
            padding: 2rem;
            border-left: 5px solid var(--accent);
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .image-container {
            margin: 2rem 0;
            text-align: center;
        }
        .featured-image {
            max-width: 100%;
            height: auto;
            border-radius: 15px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .featured-image:hover {
            transform: scale(1.02);
        }
        .image-caption {
            margin-top: 1rem;
            color: var(--text-light);
            font-style: italic;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: white;
            padding: 2rem;
            border-radius: 10px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .stat-card:hover {
            border-color: var(--primary);
            transform: translateY(-5px);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 0.5rem;
        }
        .interactive-section {
            background: linear-gradient(135deg, var(--light) 0%, #ffffff 100%);
            padding: 2rem;
            border-radius: 15px;
            margin: 3rem 0;
        }
        .rating-system, .comment-form {
            margin: 2rem 0;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--secondary);
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-input, .form-textarea {
            width: 100%;
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-input:focus, .form-textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
        }
        .submit-button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .submit-button:hover {
            background: var(--dark);
            transform: translateY(-2px);
        }
        .footer-links {
            max-width: 1200px;
            margin: 3rem auto 0;
            padding: 2rem;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background: white;
            padding: 1rem;
            border-radius: 8px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateX(5px);
            border-left: 4px solid var(--secondary);
        }
        .web-link a {
            color: var(--dark);
            text-decoration: none;
            font-weight: 600;
            display: block;
        }
        .web-link a:hover {
            color: var(--primary);
        }
        .footer {
            background: var(--dark);
            color: white;
            padding: 3rem 2rem;
            text-align: center;
            margin-top: 3rem;
        }
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .copyright {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 2rem;
            margin-top: 2rem;
        }
        @media (max-width: 768px) {
            .header-container, .container, .breadcrumb {
                padding: 0 1rem;
            }
            .article-title {
                font-size: 2rem;
            }
            .article-content {
                padding: 1.5rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .footer-links {
                grid-template-columns: 1fr;
                padding: 1rem;
            }
        }
        @media (max-width: 480px) {
            .article-title {
                font-size: 1.7rem;
            }
            .search-form {
                flex-direction: column;
                border-radius: 10px;
            }
            .search-button {
                padding: 1rem;
            }
            .rating-stars {
                justify-content: center;
            }
        }
        @media print {
            .header, .search-container, .interactive-section, .footer-links, .footer {
                display: none;
            }
            .article-content {
                box-shadow: none;
                padding: 0;
            }
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.6s ease-out;
        }
        ::-webkit-scrollbar {
            width: 10px;
        }
        ::-webkit-scrollbar-track {
            background: #f1f1f1;
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary);
            border-radius: 5px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--dark);
        }