:root {
            --primary-color: #1a365d;
            --secondary-color: #d4af37;
            --accent-color: #c53030;
            --text-dark: #2d3748;
            --text-light: #f7fafc;
            --bg-light: #edf2f7;
            --border-color: #cbd5e0;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-dark);
            background-color: #fff;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--primary-color);
            color: var(--text-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo a {
            color: var(--secondary-color);
            font-size: 2rem;
            font-weight: 800;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-icon {
            color: var(--accent-color);
        }
        .search-form {
            display: flex;
            width: 300px;
        }
        .search-input {
            flex: 1;
            padding: 10px 15px;
            border: none;
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-btn {
            background-color: var(--secondary-color);
            color: var(--primary-color);
            border: none;
            padding: 10px 20px;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: #e6c44a;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-light);
            font-size: 1.5rem;
            cursor: pointer;
        }
        nav ul {
            display: flex;
            list-style: none;
            background-color: rgba(0, 0, 0, 0.2);
        }
        nav li {
            position: relative;
        }
        nav a {
            color: var(--text-light);
            text-decoration: none;
            padding: 15px 20px;
            display: block;
            font-weight: 500;
            transition: var(--transition);
        }
        nav a:hover {
            background-color: var(--secondary-color);
            color: var(--primary-color);
        }
        nav a.active {
            background-color: var(--accent-color);
        }
        .breadcrumb {
            padding: 12px 20px;
            background-color: rgba(255, 255, 255, 0.05);
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--secondary-color);
            text-decoration: none;
        }
        .breadcrumb span {
            color: #a0aec0;
        }
        main {
            padding: 40px 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .article-content {
            background: #fff;
            border-radius: 8px;
            overflow: hidden;
        }
        article {
            padding: 30px;
        }
        h1 {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            line-height: 1.2;
            border-bottom: 3px solid var(--secondary-color);
            padding-bottom: 15px;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 1px solid var(--border-color);
            flex-wrap: wrap;
            gap: 10px;
        }
        .meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #718096;
            font-size: 0.9rem;
        }
        .featured-image {
            width: 100%;
            height: 400px;
            object-fit: cover;
            border-radius: 8px;
            margin: 25px 0;
            box-shadow: var(--shadow);
        }
        h2 {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin: 35px 0 15px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--bg-light);
        }
        h3 {
            font-size: 1.5rem;
            color: var(--primary-color);
            margin: 25px 0 12px;
        }
        h4 {
            font-size: 1.2rem;
            color: #4a5568;
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .highlight {
            background-color: rgba(212, 175, 55, 0.1);
            border-left: 4px solid var(--secondary-color);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 4px 4px 0;
        }
        .data-point {
            background-color: #f8f9fa;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
            margin: 25px 0;
        }
        .data-point h4 {
            color: var(--accent-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .quote {
            font-style: italic;
            font-size: 1.2rem;
            color: #4a5568;
            padding: 25px;
            border-left: 5px solid var(--accent-color);
            background-color: #fff5f5;
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 20px;
        }
        li {
            margin-bottom: 8px;
        }
        a.article-link {
            color: var(--accent-color);
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
        }
        a.article-link:hover {
            text-decoration: underline;
            color: #9b2c2c;
        }
        .related-terms {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 25px 0;
        }
        .term-tag {
            background-color: var(--primary-color);
            color: white;
            padding: 8px 15px;
            border-radius: 20px;
            font-size: 0.9rem;
            text-decoration: none;
            transition: var(--transition);
        }
        .term-tag:hover {
            background-color: var(--accent-color);
            transform: translateY(-2px);
        }
        aside {
            background-color: var(--bg-light);
            border-radius: 8px;
            padding: 25px;
            height: fit-content;
            box-shadow: var(--shadow);
        }
        .sidebar-widget {
            margin-bottom: 30px;
        }
        .sidebar-widget h3 {
            font-size: 1.3rem;
            color: var(--primary-color);
            padding-bottom: 10px;
            margin-bottom: 15px;
            border-bottom: 2px solid var(--border-color);
        }
        .rating-widget {
            text-align: center;
            padding: 20px;
            background: white;
            border-radius: 8px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }
        .stars {
            font-size: 2rem;
            color: #e2e8f0;
            margin: 15px 0;
            cursor: pointer;
        }
        .stars i {
            margin: 0 2px;
            transition: var(--transition);
        }
        .stars i:hover,
        .stars i.active {
            color: var(--secondary-color);
        }
        .rating-btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 4px;
            cursor: pointer;
            width: 100%;
            font-weight: 600;
            transition: var(--transition);
        }
        .rating-btn:hover {
            background-color: #2d4a7c;
        }
        .quick-links ul {
            list-style: none;
            margin: 0;
        }
        .quick-links li {
            margin-bottom: 0;
        }
        .quick-links a {
            display: block;
            padding: 12px 15px;
            color: var(--text-dark);
            text-decoration: none;
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .quick-links a:hover {
            background-color: rgba(255, 255, 255, 0.7);
            padding-left: 20px;
            color: var(--accent-color);
        }
        .comments-section {
            margin-top: 50px;
            border-top: 2px solid var(--border-color);
            padding-top: 30px;
        }
        .comment-form {
            background-color: var(--bg-light);
            padding: 25px;
            border-radius: 8px;
            margin-bottom: 40px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background-color: var(--accent-color);
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background-color: #9b2c2c;
        }
        .comment {
            background: white;
            border-radius: 8px;
            padding: 20px;
            margin-bottom: 25px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
            border-left: 4px solid var(--secondary-color);
        }
        .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(--primary-color);
        }
        .comment-date {
            color: #718096;
            font-size: 0.9rem;
        }
        footer {
            background-color: var(--primary-color);
            color: var(--text-light);
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--secondary-color);
            margin-bottom: 15px;
        }
        .footer-links h4 {
            color: var(--secondary-color);
            margin-bottom: 20px;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #cbd5e0;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 20px;
            border-radius: 8px;
            margin: 30px 0;
        }
        friend-link h3 {
            color: var(--secondary-color);
            margin-bottom: 15px;
        }
        .friend-link-item {
            display: inline-block;
            background-color: rgba(255, 255, 255, 0.1);
            padding: 8px 15px;
            margin: 5px 10px 5px 0;
            border-radius: 4px;
            color: white;
            text-decoration: none;
            transition: var(--transition);
        }
        .friend-link-item:hover {
            background-color: var(--accent-color);
            transform: translateY(-2px);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .search-form {
                order: 3;
                width: 100%;
                margin-top: 15px;
            }
            .mobile-toggle {
                display: block;
            }
            nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: var(--primary-color);
                box-shadow: 0 5px 10px rgba(0,0,0,0.2);
            }
            nav.active ul {
                display: flex;
            }
            nav li {
                width: 100%;
            }
            h1 {
                font-size: 2rem;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
            }
            .featured-image {
                height: 250px;
            }
        }
        .pulse {
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(212, 175, 55, 0.7); }
            70% { box-shadow: 0 0 0 10px rgba(212, 175, 55, 0); }
            100% { box-shadow: 0 0 0 0 rgba(212, 175, 55, 0); }
        }
        .float-animation {
            animation: float 6s ease-in-out infinite;
        }
        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-10px); }
        }