:root {
            --primary-color: #6a0dad;
            --secondary-color: #ffcc00;
            --accent-color: #00a8ff;
            --dark-bg: #1a1a2e;
            --light-bg: #f8f9fa;
            --text-dark: #333;
            --text-light: #f8f9fa;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --border-radius: 12px;
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        * {
            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-dark);
            background-color: var(--light-bg);
            overflow-x: hidden;
        }
        .site-header {
            background: linear-gradient(135deg, var(--dark-bg) 0%, var(--primary-color) 100%);
            color: var(--text-light);
            padding: 1rem 2rem;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            max-width: var(--max-width);
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--secondary-color);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 1px;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
        }
        .logo i {
            font-size: 2.5rem;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: var(--text-light);
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background-color: var(--secondary-color);
            color: var(--dark-bg);
            transform: translateY(-3px);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: var(--text-light);
            cursor: pointer;
        }
        .breadcrumb {
            max-width: var(--max-width);
            margin: 1rem auto;
            padding: 0 2rem;
            font-size: 0.95rem;
            color: #666;
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .main-container {
            max-width: var(--max-width);
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        .article-content {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 3rem;
            box-shadow: var(--shadow);
        }
        .sidebar {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 2rem;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            line-height: 1.3;
            border-bottom: 3px solid var(--secondary-color);
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: var(--dark-bg);
            margin: 2.5rem 0 1rem;
            padding-left: 1rem;
            border-left: 5px solid var(--accent-color);
        }
        h3 {
            font-size: 1.5rem;
            color: var(--primary-color);
            margin: 1.8rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--dark-bg);
            background-color: #f0f8ff;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            border-left: 5px solid var(--accent-color);
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fffacd;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 700;
            color: #b8860b;
        }
        .feature-img {
            width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
            transition: var(--transition);
        }
        .feature-img:hover {
            transform: scale(1.01);
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        blockquote {
            border-left: 5px solid var(--secondary-color);
            background-color: #f9f9f9;
            padding: 1.5rem 2rem;
            margin: 2rem 0;
            font-style: italic;
            color: #555;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        .stat-card {
            background: linear-gradient(135deg, var(--primary-color), #8a2be2);
            color: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-10px);
        }
        .stat-card i {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            color: var(--secondary-color);
        }
        .stat-card h4 {
            font-size: 2.2rem;
            margin-bottom: 0.5rem;
        }
        .interactive-section {
            background-color: #f0f8ff;
            padding: 2.5rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
            border: 2px dashed var(--accent-color);
        }
        .interactive-section h3 {
            color: var(--accent-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark-bg);
        }
        .form-control {
            width: 100%;
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--accent-color);
            box-shadow: 0 0 0 3px rgba(0, 168, 255, 0.2);
        }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, var(--primary-color), var(--accent-color));
            color: white;
            padding: 1rem 2rem;
            border: none;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            text-align: center;
        }
        .btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
            background: linear-gradient(to right, var(--accent-color), var(--primary-color));
        }
        .btn i {
            margin-right: 10px;
        }
        .star-rating {
            display: flex;
            gap: 10px;
            margin: 1.5rem 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: var(--secondary-color);
        }
        .star-rating input:checked ~ label {
            color: var(--secondary-color);
        }
        .comment {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
            border-left: 4px solid var(--primary-color);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 1rem;
            font-size: 0.9rem;
            color: #666;
        }
        .footer-links {
            background-color: var(--dark-bg);
            padding: 3rem 2rem;
            margin-top: 4rem;
        }
        .links-container {
            max-width: var(--max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background-color: rgba(255, 255, 255, 0.05);
            padding: 1.2rem;
            border-radius: 8px;
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateX(5px);
        }
        .web-link a {
            color: var(--text-light);
            text-decoration: none;
            font-size: 1rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .web-link a:hover {
            color: var(--secondary-color);
        }
        .site-footer {
            background-color: #111;
            color: #aaa;
            padding: 2rem;
            text-align: center;
        }
        .footer-container {
            max-width: var(--max-width);
            margin: 0 auto;
            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: #aaa;
            transition: var(--transition);
        }
        .social-links a:hover {
            color: var(--secondary-color);
            transform: scale(1.2);
        }
        @media (max-width: 992px) {
            .main-container {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .main-nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: var(--dark-bg);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem 2rem;
                box-shadow: var(--shadow);
            }
            .main-nav.active ul {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .header-container {
                padding: 0.5rem 1rem;
            }
            .article-content {
                padding: 2rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .interactive-section {
                padding: 1.5rem;
            }
            .footer-links {
                padding: 2rem 1rem;
            }
            .links-container {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
        }
        @media print {
            .site-header, .sidebar, .interactive-section, .footer-links, .site-footer, .breadcrumb, .hamburger {
                display: none;
            }
            .main-container {
                grid-template-columns: 1fr;
                padding: 0;
            }
            body {
                background: white;
                color: black;
            }
        }