:root {
            --primary-color: #4361ee;
            --secondary-color: #3a0ca3;
            --accent-color: #f72585;
            --light-color: #f8f9fa;
            --dark-color: #212529;
            --gray-color: #6c757d;
            --light-gray: #e9ecef;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --border-radius: 12px;
            --transition: all 0.3s ease;
            --max-width: 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, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
            line-height: 1.7;
            color: var(--dark-color);
            background-color: var(--light-color);
            overflow-x: hidden;
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-color);
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .my-logo {
            font-family: 'Comic Sans MS', 'Chalkboard SE', cursive;
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary-color);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            color: var(--accent-color);
            transform: scale(1.02);
        }
        .my-logo span {
            color: var(--accent-color);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            font-weight: 600;
            color: var(--dark-color);
            padding: 8px 0;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--primary-color);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 3px;
            background: var(--accent-color);
            bottom: 0;
            left: 0;
            transition: var(--transition);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--dark-color);
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--light-gray);
            padding: 12px 20px;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 10px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 10px;
            color: var(--gray-color);
        }
        .search-container {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            padding: 40px 20px;
            text-align: center;
            color: white;
        }
        .search-box {
            max-width: 600px;
            margin: 20px auto 0;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
        }
        .search-input {
            flex-grow: 1;
            padding: 18px 25px;
            border: none;
            font-size: 1.1rem;
            outline: none;
        }
        .search-button {
            background-color: var(--accent-color);
            color: white;
            border: none;
            padding: 0 35px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-button:hover {
            background-color: #d11467;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 20px;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            padding: 40px;
            overflow: hidden;
        }
        .article-header {
            margin-bottom: 40px;
            border-bottom: 2px solid var(--light-gray);
            padding-bottom: 25px;
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: var(--secondary-color);
            margin-bottom: 15px;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
            color: var(--gray-color);
            font-size: 0.95rem;
        }
        .last-updated {
            background-color: #e7f1ff;
            padding: 8px 15px;
            border-radius: 20px;
            font-weight: 600;
        }
        .featured-image {
            width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            margin: 30px 0;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
        }
        .article-body h2 {
            font-size: 2rem;
            color: var(--secondary-color);
            margin: 50px 0 20px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--light-gray);
        }
        .article-body h3 {
            font-size: 1.6rem;
            color: var(--primary-color);
            margin: 35px 0 15px;
        }
        .article-body h4 {
            font-size: 1.3rem;
            color: var(--dark-color);
            margin: 25px 0 12px;
        }
        .article-body p {
            margin-bottom: 1.5em;
            text-align: justify;
        }
        .highlight-box {
            background-color: #f0f7ff;
            border-left: 5px solid var(--primary-color);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 25px;
            text-align: center;
            box-shadow: var(--shadow);
            border-top: 5px solid var(--accent-color);
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary-color);
            line-height: 1;
            margin-bottom: 10px;
        }
        .stat-label {
            font-size: 1rem;
            color: var(--gray-color);
            font-weight: 600;
        }
        .internal-link {
            background-color: #f8f9ff;
            padding: 3px 8px;
            border-radius: 4px;
            font-weight: 600;
            border-bottom: 2px solid transparent;
        }
        .internal-link:hover {
            border-bottom-color: var(--accent-color);
            background-color: #edf2ff;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            padding: 25px;
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            color: var(--secondary-color);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--light-gray);
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 2rem;
            color: #ffc107;
            margin: 15px 0;
            letter-spacing: 5px;
        }
        .stars i {
            cursor: pointer;
            transition: var(--transition);
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        .rating-form {
            margin-top: 20px;
        }
        .rating-form select, .rating-form textarea, .rating-form input {
            width: 100%;
            padding: 12px;
            margin-bottom: 15px;
            border: 1px solid #ddd;
            border-radius: 8px;
            font-family: inherit;
        }
        .rating-form button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            width: 100%;
            transition: var(--transition);
        }
        .rating-form button:hover {
            background-color: var(--secondary-color);
        }
        .table-of-contents ul {
            list-style: none;
            padding-left: 0;
        }
        .table-of-contents li {
            margin-bottom: 12px;
            padding-left: 15px;
            position: relative;
        }
        .table-of-contents li::before {
            content: '▶';
            position: absolute;
            left: 0;
            color: var(--accent-color);
            font-size: 0.8rem;
        }
        .table-of-contents a {
            color: var(--dark-color);
        }
        .table-of-contents a:hover {
            color: var(--primary-color);
            padding-left: 5px;
        }
        .comments-section {
            margin-top: 50px;
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            padding: 40px;
        }
        .comments-section h2 {
            font-size: 2rem;
            color: var(--secondary-color);
            margin-bottom: 30px;
        }
        .comment-form {
            margin-bottom: 40px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .form-group input, .form-group textarea {
            width: 100%;
            padding: 15px;
            border: 1px solid #ddd;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
        }
        .form-group textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-comment {
            background-color: var(--accent-color);
            color: white;
            border: none;
            padding: 15px 35px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .submit-comment:hover {
            background-color: #d11467;
            transform: translateY(-3px);
        }
        .comment {
            border-bottom: 1px solid var(--light-gray);
            padding: 25px 0;
        }
        .comment:last-child {
            border-bottom: none;
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
            flex-wrap: wrap;
            gap: 10px;
        }
        .comment-author {
            font-weight: 700;
            color: var(--secondary-color);
        }
        .comment-date {
            color: var(--gray-color);
            font-size: 0.9rem;
        }
        .site-footer {
            background-color: var(--dark-color);
            color: white;
            padding: 60px 20px 30px;
            margin-top: 60px;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .footer-logo {
            font-family: 'Comic Sans MS', 'Chalkboard SE', cursive;
            font-size: 2rem;
            font-weight: 800;
            color: white;
            margin-bottom: 20px;
            display: inline-block;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #adb5bd;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 15px;
            transition: var(--transition);
        }
        friend-link:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding-top: 40px;
            margin-top: 40px;
            border-top: 1px solid #495057;
            color: #adb5bd;
            font-size: 0.9rem;
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background-color: white;
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
                padding: 20px;
                transform: translateY(-100%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
            }
            .main-nav.active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li {
                width: 100%;
            }
            .main-nav a {
                display: block;
                padding: 15px 0;
                border-bottom: 1px solid var(--light-gray);
            }
            .main-nav a:last-child {
                border-bottom: none;
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
            .article-content {
                padding: 25px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .search-box {
                flex-direction: column;
                border-radius: var(--border-radius);
            }
            .search-input, .search-button {
                border-radius: 0;
                padding: 15px;
            }
            .search-input {
                border-bottom: 1px solid #ddd;
            }
        }
        @media print {
            .site-header, .search-container, .sidebar, .comments-section, .site-footer {
                display: none;
            }
            .main-content {
                grid-template-columns: 1fr;
                padding: 0;
            }
            .article-content {
                box-shadow: none;
                padding: 0;
            }
        }