:root {
            --primary: #8B5CF6;
            --primary-dark: #7C3AED;
            --secondary: #10B981;
            --accent: #F59E0B;
            --text: #1F2937;
            --text-light: #6B7280;
            --bg: #F9FAFB;
            --card-bg: #FFFFFF;
            --border: #E5E7EB;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --radius: 12px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        ul, ol {
            padding-left: 1.5rem;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .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;
        }
        header {
            background-color: var(--card-bg);
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 1.5rem;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .logo i {
            color: var(--accent);
        }
        .logo:hover {
            color: var(--primary-dark);
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
            color: var(--text-light);
        }
        nav a:hover, nav a.active {
            color: var(--primary);
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary);
            transition: var(--transition);
        }
        nav a:hover::after, nav a.active::after {
            width: 100%;
        }
        .search-box {
            display: flex;
            max-width: 300px;
            width: 100%;
        }
        .search-box input {
            flex: 1;
            padding: 0.75rem 1rem;
            border: 2px solid var(--border);
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 0.95rem;
            outline: none;
            transition: var(--transition);
        }
        .search-box input:focus {
            border-color: var(--primary);
        }
        .search-box button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background-color: var(--primary-dark);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 1.5rem;
            background-color: #F3F4F6;
            font-size: 0.9rem;
            color: var(--text-light);
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 2rem 0;
        }
        .article-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        article {
            background-color: var(--card-bg);
            border-radius: var(--radius);
            padding: 2.5rem;
            box-shadow: var(--shadow);
        }
        .article-header {
            margin-bottom: 2.5rem;
            border-bottom: 2px solid var(--border);
            padding-bottom: 1.5rem;
        }
        h1 {
            font-size: 2.5rem;
            line-height: 1.2;
            margin-bottom: 1rem;
            color: var(--text);
        }
        .article-meta {
            display: flex;
            gap: 1.5rem;
            color: var(--text-light);
            font-size: 0.9rem;
            margin-bottom: 1.5rem;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .featured-image {
            margin: 2.5rem 0;
            text-align: center;
        }
        .featured-image img {
            margin: 0 auto;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        .image-caption {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-top: 0.75rem;
            font-style: italic;
        }
        h2 {
            font-size: 1.8rem;
            margin: 2.5rem 0 1.5rem;
            color: var(--text);
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--border);
        }
        h3 {
            font-size: 1.4rem;
            margin: 2rem 0 1rem;
            color: var(--primary-dark);
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .highlight {
            background-color: rgba(139, 92, 246, 0.1);
            border-left: 4px solid var(--primary);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--radius) var(--radius) 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(--bg);
            padding: 1.5rem;
            border-radius: var(--radius);
            text-align: center;
            border: 1px solid var(--border);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.5rem;
        }
        .tip-box {
            background-color: rgba(245, 158, 11, 0.1);
            border: 1px solid var(--accent);
            padding: 1.5rem;
            border-radius: var(--radius);
            margin: 2rem 0;
        }
        .tip-box h4 {
            color: var(--accent);
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            border-radius: var(--radius);
            overflow: hidden;
        }
        .comparison-table th {
            background-color: var(--primary);
            color: white;
            padding: 1rem;
            text-align: left;
        }
        .comparison-table td {
            padding: 1rem;
            border-bottom: 1px solid var(--border);
        }
        .comparison-table tr:nth-child(even) {
            background-color: var(--bg);
        }
        .comparison-table tr:hover {
            background-color: rgba(139, 92, 246, 0.05);
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background-color: var(--card-bg);
            border-radius: var(--radius);
            padding: 1.5rem;
            box-shadow: var(--shadow);
        }
        .widget-title {
            font-size: 1.2rem;
            margin-bottom: 1.25rem;
            color: var(--text);
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--border);
        }
        .quick-links ul {
            list-style: none;
            padding-left: 0;
        }
        .quick-links li {
            margin-bottom: 0.75rem;
        }
        .quick-links a {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.75rem;
            border-radius: var(--radius);
            color: var(--text);
            background-color: var(--bg);
        }
        .quick-links a:hover {
            background-color: var(--primary);
            color: white;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 1.8rem;
            color: #FFD700;
            margin: 1rem 0;
        }
        .stars span {
            cursor: pointer;
            transition: var(--transition);
        }
        .stars span:hover {
            transform: scale(1.2);
        }
        .rating-form button {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 0.75rem 2rem;
            border-radius: var(--radius);
            cursor: pointer;
            font-weight: 600;
            width: 100%;
            transition: var(--transition);
        }
        .rating-form button:hover {
            background-color: #0DA271;
        }
        .comment-section {
            margin-top: 3rem;
            padding-top: 2.5rem;
            border-top: 2px solid var(--border);
        }
        .comment-form {
            background-color: var(--bg);
            padding: 2rem;
            border-radius: var(--radius);
            margin-bottom: 2.5rem;
        }
        .form-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-bottom: 1.5rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea {
            padding: 0.75rem 1rem;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-family: inherit;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
        }
        .comment-form button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0.875rem 2.5rem;
            border-radius: var(--radius);
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
        }
        .comment-form button:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .comments-list {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .comment {
            background-color: var(--card-bg);
            padding: 1.5rem;
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 1rem;
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 3rem 0;
        }
        .web-link {
            background-color: var(--bg);
            padding: 1rem;
            border-radius: var(--radius);
            text-align: center;
        }
        .web-link a {
            color: var(--primary);
            font-weight: 600;
        }
        .web-link a:hover {
            text-decoration: underline;
        }
        footer {
            background-color: var(--text);
            color: white;
            padding: 3rem 0 1.5rem;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            color: white;
        }
        .copyright {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
            width: 100%;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
        }
        @media (max-width: 1024px) {
            .article-grid {
                grid-template-columns: 1fr;
            }
            aside {
                order: -1;
            }
        }
        @media (max-width: 768px) {
            html {
                font-size: 15px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .header-container {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                order: 3;
                margin-top: 1rem;
            }
            nav.active {
                display: block;
            }
            nav ul {
                flex-direction: column;
                gap: 1rem;
            }
            .search-box {
                max-width: 100%;
                order: 2;
                margin-top: 1rem;
            }
            .article-header, article {
                padding: 1.5rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .comparison-table {
                display: block;
                overflow-x: auto;
            }
        }
        @media (max-width: 480px) {
            .article-meta {
                flex-direction: column;
                gap: 0.75rem;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        article, .sidebar-widget, .comment-section {
            animation: fadeIn 0.6s ease-out;
        }
        .interactive-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background-color: var(--primary);
            color: white;
            padding: 0.875rem 1.75rem;
            border-radius: 50px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            margin: 0.5rem 0;
        }
        .interactive-btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(139, 92, 246, 0.3);
        }
        .expandable {
            max-height: 100px;
            overflow: hidden;
            position: relative;
            transition: max-height 0.5s ease;
        }
        .expandable.expanded {
            max-height: 2000px;
        }
        .expand-toggle {
            display: inline-block;
            color: var(--primary);
            font-weight: 600;
            cursor: pointer;
            margin-top: 0.5rem;
        }
        .expand-toggle:hover {
            text-decoration: underline;
        }