:root {
            --primary-dark: #1a365d;
            --primary: #2d4a8a;
            --primary-light: #4a6fca;
            --accent: #d4af37;
            --accent-dark: #b8941f;
            --text: #2d3748;
            --text-light: #4a5568;
            --background: #f7fafc;
            --card-bg: #ffffff;
            --border: #e2e8f0;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --radius: 12px;
            --transition: all 0.3s ease;
        }
        * {
            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);
            background-color: var(--background);
            font-size: 18px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 1px;
            text-transform: uppercase;
        }
        .logo-icon {
            color: var(--accent);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
            transition: var(--transition);
            position: relative;
        }
        .main-nav a:hover {
            background-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 3px;
            background: var(--accent);
            transition: all 0.3s ease;
            transform: translateX(-50%);
        }
        .main-nav a:hover::after {
            width: 80%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #edf2f7;
            padding: 1rem 0;
            font-size: 0.95rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: var(--text-light);
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .main-content {
            padding: 2.5rem 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        .article-container {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 2.5rem;
            box-shadow: var(--shadow);
        }
        .article-header {
            margin-bottom: 2.5rem;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 1.5rem;
        }
        .article-header h1 {
            font-size: 2.5rem;
            color: var(--primary-dark);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            gap: 1rem;
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .featured-image {
            margin: 2rem 0;
            text-align: center;
        }
        .featured-image img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .featured-image img:hover {
            transform: scale(1.01);
            box-shadow: var(--shadow-hover);
        }
        .article-body h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--border);
        }
        .article-body h3 {
            font-size: 1.6rem;
            color: var(--primary-dark);
            margin: 2rem 0 1rem;
        }
        .article-body p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .article-body emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .highlight-box {
            background: linear-gradient(to right, #fef9e7, #fef5e7);
            border-left: 5px solid var(--accent);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .highlight-box strong {
            color: var(--primary-dark);
        }
        .tip {
            background-color: #e8f4fd;
            border: 1px solid #b6e0fe;
            padding: 1.5rem;
            border-radius: var(--radius);
            margin: 1.5rem 0;
            position: relative;
            padding-left: 3.5rem;
        }
        .tip::before {
            content: '💡';
            position: absolute;
            left: 1.2rem;
            top: 1.5rem;
            font-size: 1.5rem;
        }
        .warning {
            background-color: #fde8e8;
            border: 1px solid #feb6b6;
            padding: 1.5rem;
            border-radius: var(--radius);
            margin: 1.5rem 0;
            position: relative;
            padding-left: 3.5rem;
        }
        .warning::before {
            content: '⚠️';
            position: absolute;
            left: 1.2rem;
            top: 1.5rem;
            font-size: 1.5rem;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 1.5rem;
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border-top: 4px solid var(--primary-light);
        }
        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 0.5rem;
        }
        .stat-desc {
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 1.8rem;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--primary);
            margin-bottom: 1.5rem;
            padding-bottom: 0.8rem;
            border-bottom: 2px solid var(--border);
            font-size: 1.4rem;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 0.9rem 1rem;
            border: 2px solid var(--border);
            border-right: none;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: var(--primary-dark);
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 1.8rem;
            color: #ffc107;
        }
        .star {
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover {
            transform: scale(1.2);
        }
        .rating-form button {
            background: var(--accent);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: var(--radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            margin-top: 1rem;
            width: 100%;
        }
        .rating-form button:hover {
            background: var(--accent-dark);
        }
        .comment-form textarea {
            width: 100%;
            padding: 1rem;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-family: inherit;
            font-size: 1rem;
            resize: vertical;
            min-height: 120px;
            margin-bottom: 1rem;
        }
        .comment-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: var(--radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            width: 100%;
        }
        .comment-form button:hover {
            background: var(--primary-dark);
        }
        .internal-links {
            margin: 3rem 0;
            padding: 2.5rem;
            background: linear-gradient(135deg, #f8fafc 0%, #edf2f7 100%);
            border-radius: var(--radius);
        }
        .internal-links h2 {
            color: var(--primary-dark);
            margin-bottom: 1.5rem;
            text-align: center;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.2rem;
        }
        .web-link {
            background: white;
            padding: 1.2rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .web-link a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            display: block;
        }
        .web-link a:hover {
            text-decoration: underline;
        }
        .site-footer {
            background: var(--primary-dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: block;
            margin-bottom: 1rem;
        }
        .footer-logo p {
            color: #cbd5e0;
            line-height: 1.6;
        }
        .footer-links h4, .footer-contact h4 {
            color: var(--accent);
            margin-bottom: 1.5rem;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #cbd5e0;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #2d4a8a;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            .sidebar {
                order: -1;
            }
        }
        @media (max-width: 768px) {
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: var(--primary-dark);
                padding: 1rem;
                box-shadow: var(--shadow);
                border-top: 2px solid var(--accent);
            }
            .main-nav.active ul {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .article-header h1 {
                font-size: 2rem;
            }
            .article-container {
                padding: 1.8rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .footer-container {
                grid-template-columns: 1fr;
                text-align: center;
            }
        }