:root {
            --primary-color: #1e5aa0;
            --secondary-color: #ff9900;
            --dark-bg: #0f1a2a;
            --light-bg: #f5f7fa;
            --text-dark: #2c3e50;
            --text-light: #ecf0f1;
            --accent-color: #e74c3c;
            --border-radius: 8px;
            --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        * {
            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: var(--light-bg);
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: var(--primary-color);
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary-color);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--dark-bg);
            color: var(--text-light);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--secondary-color);
            text-transform: uppercase;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
        }
        .logo i {
            margin-right: 10px;
            color: #00bfff;
        }
        .logo a:hover {
            color: #fff;
        }
        nav.desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 1.5rem;
        }
        nav.desktop-nav a {
            color: var(--text-light);
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: var(--border-radius);
        }
        nav.desktop-nav a:hover {
            background-color: rgba(255, 153, 0, 0.2);
            color: var(--secondary-color);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: var(--text-light);
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background-color: var(--dark-bg);
            flex-direction: column;
            padding: 1rem;
            box-shadow: 0 5px 10px rgba(0,0,0,0.3);
            z-index: 999;
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav ul {
            list-style: none;
            width: 100%;
        }
        .mobile-nav li {
            margin-bottom: 0.8rem;
        }
        .mobile-nav a {
            color: var(--text-light);
            display: block;
            padding: 0.8rem;
            border-radius: var(--border-radius);
            font-weight: 600;
        }
        .mobile-nav a:hover {
            background-color: rgba(255, 153, 0, 0.2);
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #e9ecef;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin: 0 10px;
            color: #6c757d;
        }
        .breadcrumb a {
            color: var(--primary-color);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 2rem 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        article {
            background-color: #fff;
            padding: 2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
        }
        h1 {
            font-size: 2.5rem;
            color: var(--dark-bg);
            margin-bottom: 1rem;
            line-height: 1.2;
            border-bottom: 3px solid var(--secondary-color);
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #ddd;
        }
        h3 {
            font-size: 1.4rem;
            color: var(--text-dark);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--primary-color);
            background-color: #e3f2fd;
            padding: 1rem;
            border-left: 4px solid var(--secondary-color);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: #fff9e6;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            border-left: 5px solid var(--secondary-color);
            margin: 1.5rem 0;
        }
        .highlight p:last-child {
            margin-bottom: 0;
        }
        em {
            font-style: italic;
            color: #555;
        }
        strong {
            font-weight: 700;
            color: var(--dark-bg);
        }
        .featured-image {
            width: 100%;
            max-width: 800px;
            margin: 2rem auto;
            text-align: center;
        }
        .featured-image img {
            width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            transition: var(--transition);
        }
        .featured-image img:hover {
            transform: scale(1.01);
        }
        .image-caption {
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: linear-gradient(135deg, var(--primary-color), #2c82c9);
            color: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            text-align: center;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-5px);
        }
        .stat-card h3 {
            color: white;
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
        }
        .stat-card.secondary {
            background: linear-gradient(135deg, var(--secondary-color), #ffb347);
        }
        .stat-card.accent {
            background: linear-gradient(135deg, var(--accent-color), #ff7675);
        }
        .interactive-section {
            background-color: #f8f9fa;
            border-radius: var(--border-radius);
            padding: 2rem;
            margin: 2.5rem 0;
            border: 1px solid #dee2e6;
        }
        .interactive-section h2 {
            border-bottom: none;
            text-align: center;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid #ced4da;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.2rem rgba(30, 90, 160, 0.25);
        }
        .btn {
            display: inline-block;
            padding: 0.8rem 1.8rem;
            background-color: var(--primary-color);
            color: white;
            border: none;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn:hover {
            background-color: #154274;
            color: white;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        }
        .btn-secondary {
            background-color: var(--secondary-color);
        }
        .btn-secondary:hover {
            background-color: #cc7a00;
        }
        .star-rating {
            direction: rtl;
            display: inline-block;
            font-size: 1.8rem;
            unicode-bidi: bidi-override;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #ccc;
            cursor: pointer;
            padding: 0 2px;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #ffcc00;
        }
        .comment-list {
            margin-top: 2rem;
        }
        .comment {
            background-color: white;
            padding: 1.2rem;
            border-radius: var(--border-radius);
            margin-bottom: 1.2rem;
            border-left: 4px solid #ddd;
            box-shadow: 0 3px 8px rgba(0,0,0,0.05);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 0.5rem;
            font-size: 0.9rem;
            color: #666;
        }
        .comment-author {
            font-weight: 700;
            color: var(--primary-color);
        }
        aside {
            background-color: #fff;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget {
            margin-bottom: 2rem;
        }
        .sidebar-widget h3 {
            font-size: 1.3rem;
            color: var(--dark-bg);
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--secondary-color);
            margin-bottom: 1rem;
        }
        .related-links ul {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dotted #eee;
        }
        .related-links a {
            display: flex;
            align-items: center;
        }
        .related-links i {
            margin-right: 10px;
            color: var(--secondary-color);
        }
        .web-links-section {
            background-color: #1a2530;
            padding: 2.5rem 0;
            margin-top: 3rem;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background-color: #243142;
            padding: 1.2rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: #2c3a4e;
            transform: translateY(-3px);
        }
        .web-link a {
            color: #ddd;
            display: block;
            font-weight: 600;
        }
        .web-link a:hover {
            color: var(--secondary-color);
        }
        footer {
            background-color: var(--dark-bg);
            color: var(--text-light);
            padding: 2.5rem 0 1.5rem;
            text-align: center;
        }
        .footer-content {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        .copyright {
            margin-top: 1.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid #34495e;
            width: 100%;
            font-size: 0.9rem;
            color: #95a5a6;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            nav.desktop-nav {
                display: none;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            article, aside {
                padding: 1.5rem;
            }
            .stats-box {
                grid-template-columns: 1fr;
            }
        }
        @media print {
            header, .breadcrumb, .interactive-section, aside, .web-links-section, footer {
                display: none;
            }
            body {
                background-color: white;
                color: black;
            }
            article {
                box-shadow: none;
                padding: 0;
            }
            a {
                color: black;
                text-decoration: underline;
            }
        }