:root {
            --primary-color: #1a365d;
            --secondary-color: #e53e3e;
            --accent-color: #f6ad55;
            --light-color: #f7fafc;
            --dark-color: #2d3748;
            --text-color: #4a5568;
            --transition: all 0.3s ease;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --border-radius: 8px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: #fff;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--primary-color);
            color: white;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo i {
            color: var(--accent-color);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .main-nav a:hover {
            background-color: var(--secondary-color);
            color: white;
        }
        .breadcrumb {
            background-color: var(--light-color);
            padding: 12px 0;
            border-bottom: 1px solid #e2e8f0;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 10px;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
        }
        .breadcrumb a:hover {
            color: var(--secondary-color);
        }
        .breadcrumb i {
            font-size: 0.8rem;
            color: #a0aec0;
        }
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 5px;
        }
        .search-container {
            padding: 30px 0;
            background: linear-gradient(to right, var(--primary-color), #2d4a7a);
            text-align: center;
            color: white;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            gap: 10px;
        }
        .search-form input {
            flex: 1;
            padding: 15px 20px;
            border: none;
            border-radius: 50px;
            font-size: 1rem;
            box-shadow: var(--shadow);
        }
        .search-form button {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            border-radius: 50px;
            padding: 0 30px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background-color: #c53030;
        }
        main {
            padding: 40px 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        article {
            background-color: white;
            border-radius: var(--border-radius);
            overflow: hidden;
        }
        .article-header {
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 3px solid var(--accent-color);
        }
        .article-header h1 {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 15px;
            line-height: 1.2;
        }
        .meta-info {
            display: flex;
            gap: 20px;
            color: #718096;
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .meta-info span {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .content-section {
            margin-bottom: 40px;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #e2e8f0;
        }
        h3 {
            font-size: 1.5rem;
            color: var(--dark-color);
            margin: 25px 0 15px;
        }
        h4 {
            font-size: 1.2rem;
            color: var(--text-color);
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--primary-color);
            background-color: #f0f4f8;
            padding: 20px;
            border-left: 4px solid var(--accent-color);
            border-radius: var(--border-radius);
            margin-bottom: 30px;
        }
        .highlight {
            background-color: #fffaf0;
            padding: 25px;
            border-radius: var(--border-radius);
            border-left: 5px solid var(--accent-color);
            margin: 25px 0;
        }
        .highlight p {
            margin-bottom: 0;
        }
        .article-image {
            margin: 30px 0;
            text-align: center;
        }
        .article-image img {
            max-width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .image-caption {
            margin-top: 10px;
            font-style: italic;
            color: #718096;
            font-size: 0.9rem;
        }
        .content-link {
            color: var(--secondary-color);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted var(--secondary-color);
            transition: var(--transition);
        }
        .content-link:hover {
            color: var(--primary-color);
            border-bottom-style: solid;
        }
        ul, ol {
            margin: 20px 0 20px 30px;
        }
        li {
            margin-bottom: 10px;
        }
        blockquote {
            border-left: 4px solid var(--secondary-color);
            padding-left: 20px;
            margin: 30px 0;
            font-style: italic;
            color: var(--dark-color);
            background-color: #f8f8f8;
            padding: 20px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .interactive-section {
            background-color: var(--light-color);
            padding: 30px;
            border-radius: var(--border-radius);
            margin: 40px 0;
            box-shadow: var(--shadow);
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-top: 20px;
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            color: #e2e8f0;
            cursor: pointer;
        }
        .rating-stars .active {
            color: var(--accent-color);
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .form-group label {
            font-weight: 600;
            color: var(--dark-color);
        }
        .form-group input,
        .form-group textarea {
            padding: 12px 15px;
            border: 1px solid #cbd5e0;
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
        }
        .form-group textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: var(--border-radius);
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            align-self: flex-start;
        }
        .submit-btn:hover {
            background-color: #c53030;
            transform: translateY(-2px);
        }
        aside {
            background-color: var(--light-color);
            border-radius: var(--border-radius);
            padding: 25px;
            height: fit-content;
            position: sticky;
            top: 100px;
        }
        .sidebar-section {
            margin-bottom: 30px;
        }
        .sidebar-section h3 {
            font-size: 1.3rem;
            color: var(--primary-color);
            margin-bottom: 15px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--accent-color);
        }
        .related-links {
            list-style: none;
            margin: 0;
        }
        .related-links li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dashed #cbd5e0;
        }
        .related-links a {
            color: var(--text-color);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .related-links a:hover {
            color: var(--secondary-color);
        }
        .related-links i {
            color: var(--accent-color);
            font-size: 0.9rem;
        }
        .stats-box {
            background-color: white;
            padding: 20px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            text-align: center;
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary-color);
            display: block;
            line-height: 1;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-color);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        footer {
            background-color: var(--primary-color);
            color: white;
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
        }
        .footer-section h3 {
            color: white;
            font-size: 1.2rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-section h3::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 40px;
            height: 3px;
            background-color: var(--accent-color);
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #cbd5e0;
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-links a:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin-top: 10px;
            padding: 8px 12px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 4px;
        }
        friend-link a {
            color: var(--accent-color) !important;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            margin-top: 40px;
            border-top: 1px solid #2d4a7a;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 1024px) {
            .footer-container {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .menu-toggle {
                display: block;
            }
            .main-nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease;
            }
            .main-nav.active {
                max-height: 300px;
                margin-top: 15px;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li {
                width: 100%;
            }
            .main-nav a {
                display: block;
                padding: 12px 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }
            main {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
                margin-top: 40px;
            }
            .article-header h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 576px) {
            .footer-container {
                grid-template-columns: 1fr;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                justify-content: center;
                padding: 15px;
            }
            .meta-info {
                flex-direction: column;
                gap: 10px;
            }
        }
        .text-center {
            text-align: center;
        }
        .text-bold {
            font-weight: 800;
        }
        .text-accent {
            color: var(--accent-color);
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .divider {
            height: 1px;
            background-color: #e2e8f0;
            margin: 30px 0;
        }