:root {
            --primary-blue: #0066cc;
            --dark-blue: #004a99;
            --accent-orange: #ff9900;
            --light-gray: #f5f7fa;
            --medium-gray: #e1e5eb;
            --dark-gray: #333344;
            --text-primary: #222233;
            --text-secondary: #555566;
            --white: #ffffff;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
            --border-radius: 8px;
            --max-content-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: 1.7;
            color: var(--text-primary);
            background-color: var(--white);
            overflow-x: hidden;
        }
        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-orange);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-content-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--dark-blue), var(--primary-blue));
            color: var(--white);
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--white);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo a:hover {
            color: var(--accent-orange);
        }
        .logo i {
            font-size: 2rem;
        }
        .desktop-nav {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
        }
        .desktop-nav a {
            color: var(--white);
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .desktop-nav a:hover {
            color: var(--accent-orange);
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--accent-orange);
            transition: var(--transition);
        }
        .desktop-nav a:hover::after {
            width: 100%;
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--white);
            font-size: 1.5rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: var(--dark-blue);
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: var(--white);
            padding: 0.75rem 1rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            background-color: var(--light-gray);
            padding: 1rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin: 0 10px;
            color: var(--text-secondary);
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--primary-blue);
        }
        .breadcrumb li:last-child a {
            color: var(--primary-blue);
            font-weight: 600;
        }
        .main-content-area {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 3rem 0;
        }
        @media (max-width: 992px) {
            .main-content-area {
                grid-template-columns: 1fr;
            }
        }
        .article-container {
            background: var(--white);
            border-radius: var(--border-radius);
            overflow: hidden;
        }
        .article-header {
            margin-bottom: 2.5rem;
        }
        .article-header h1 {
            font-size: 2.5rem;
            line-height: 1.2;
            color: var(--dark-blue);
            margin-bottom: 1rem;
        }
        @media (max-width: 768px) {
            .article-header h1 {
                font-size: 2rem;
            }
        }
        .article-meta {
            display: flex;
            gap: 1.5rem;
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 1.5rem;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .article-intro {
            font-size: 1.2rem;
            color: var(--dark-gray);
            padding: 1.5rem;
            background: var(--light-gray);
            border-left: 5px solid var(--accent-orange);
            border-radius: var(--border-radius);
            margin-bottom: 2.5rem;
        }
        .article-body {
            font-size: 1.1rem;
        }
        .article-body h2 {
            font-size: 1.8rem;
            color: var(--dark-blue);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--medium-gray);
        }
        .article-body h3 {
            font-size: 1.5rem;
            color: var(--primary-blue);
            margin: 2rem 0 1rem;
        }
        .article-body p {
            margin-bottom: 1.5rem;
            color: var(--text-primary);
            text-align: justify;
        }
        .article-body strong {
            color: var(--dark-blue);
            font-weight: 700;
        }
        .article-body em {
            color: var(--text-secondary);
        }
        .key-points {
            background: linear-gradient(to right, var(--light-gray), #e8eff7);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            border: 1px dashed var(--primary-blue);
        }
        .key-points h3 {
            color: var(--dark-blue);
            margin-top: 0;
        }
        .key-points ul {
            padding-left: 1.5rem;
        }
        .key-points li {
            margin-bottom: 0.75rem;
        }
        .featured-image {
            margin: 2.5rem 0;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-image figcaption {
            padding: 1rem;
            background: var(--light-gray);
            font-style: italic;
            color: var(--text-secondary);
            text-align: center;
        }
        .cta-box {
            background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
            color: var(--white);
            padding: 2rem;
            border-radius: var(--border-radius);
            text-align: center;
            margin: 3rem 0;
        }
        .cta-box h3 {
            color: var(--white);
            margin-bottom: 1rem;
        }
        .cta-button {
            display: inline-block;
            background: var(--accent-orange);
            color: var(--white);
            padding: 0.9rem 2rem;
            border-radius: 50px;
            font-weight: 700;
            margin-top: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .cta-button:hover {
            background: #ffaa33;
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(255,153,0,0.3);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: var(--white);
            border-radius: var(--border-radius);
            padding: 1.5rem;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--dark-blue);
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--medium-gray);
            font-size: 1.4rem;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 0.9rem;
            border: 2px solid var(--medium-gray);
            border-right: none;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }
        .search-form button {
            background: var(--primary-blue);
            color: var(--white);
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: var(--dark-blue);
        }
        .rating-widget form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .star-rating {
            direction: rtl;
            text-align: center;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: var(--medium-gray);
            font-size: 2rem;
            padding: 0 3px;
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: var(--accent-orange);
        }
        .rating-widget input, .rating-widget textarea {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid var(--medium-gray);
            border-radius: var(--border-radius);
            font-family: inherit;
        }
        .rating-widget button {
            background: var(--primary-blue);
            color: var(--white);
            border: none;
            padding: 0.9rem;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-widget button:hover {
            background: var(--dark-blue);
        }
        .related-links ul {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed var(--medium-gray);
        }
        .related-links li:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }
        .related-links a {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-links i {
            color: var(--primary-blue);
        }
        .comments-section {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 3px solid var(--light-gray);
        }
        .comments-section h2 {
            color: var(--dark-blue);
            margin-bottom: 2rem;
        }
        .comment-form {
            background: var(--light-gray);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin-bottom: 3rem;
        }
        .comment-form h3 {
            margin-bottom: 1.5rem;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .comment-form input,
        .comment-form textarea {
            width: 100%;
            padding: 0.9rem;
            border: 1px solid var(--medium-gray);
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
        }
        .comment-form textarea {
            min-height: 150px;
            resize: vertical;
        }
        .comment-form button {
            background: var(--primary-blue);
            color: var(--white);
            border: none;
            padding: 1rem 2rem;
            border-radius: var(--border-radius);
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
        }
        .comment-form button:hover {
            background: var(--dark-blue);
        }
        .comment-list .comment {
            background: var(--white);
            border-radius: var(--border-radius);
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
            border-left: 4px solid var(--primary-blue);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1rem;
            flex-wrap: wrap;
        }
        .comment-author {
            font-weight: 700;
            color: var(--dark-blue);
        }
        .comment-date {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .footer-links-section {
            background: var(--light-gray);
            padding: 3rem 0;
            margin-top: 3rem;
        }
        .web-links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background: var(--white);
            padding: 1.2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        }
        .web-link a {
            color: var(--dark-gray);
            font-weight: 600;
            display: block;
        }
        .web-link a:hover {
            color: var(--primary-blue);
        }
        .site-footer {
            background: var(--dark-gray);
            color: var(--white);
            padding: 3rem 0 1.5rem;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }
        .copyright {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            width: 100%;
            color: #aaaabb;
            font-size: 0.95rem;
        }
        .footer-links {
            display: flex;
            gap: 2rem;
            margin-bottom: 2rem;
            flex-wrap: wrap;
            justify-content: center;
        }
        .footer-links a {
            color: #ccccdd;
        }
        .footer-links a:hover {
            color: var(--accent-orange);
        }
        .social-icons {
            display: flex;
            gap: 1.5rem;
            margin-bottom: 2rem;
        }
        .social-icons a {
            color: var(--white);
            background: rgba(255,255,255,0.1);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }
        .social-icons a:hover {
            background: var(--accent-orange);
            transform: scale(1.1);
        }
        .visually-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .text-center {
            text-align: center;
        }
        .mb-3 {
            margin-bottom: 3rem;
        }