:root {
            --primary-color: #1e3a8a;
            --secondary-color: #dc2626;
            --accent-color: #fbbf24;
            --text-dark: #1f2937;
            --text-light: #6b7280;
            --bg-light: #f9fafb;
            --bg-section: #ffffff;
            --border-color: #e5e7eb;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: var(--bg-light);
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--bg-section);
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color);
            text-decoration: none;
            text-transform: uppercase;
            letter-spacing: -0.5px;
        }
        .logo span {
            color: var(--secondary-color);
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            position: relative;
        }
        nav a:hover {
            color: var(--primary-color);
        }
        nav a:after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: -5px;
            left: 0;
            background-color: var(--primary-color);
            transition: width 0.3s ease;
        }
        nav a:hover:after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: var(--primary-color);
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: var(--text-light);
            border-bottom: 1px solid var(--border-color);
            background-color: var(--bg-light);
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 2rem 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        .article-content {
            background-color: var(--bg-section);
            padding: 2.5rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .article-content h1 {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            gap: 1rem;
            color: var(--text-light);
            font-size: 0.9rem;
            margin-bottom: 2rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid var(--border-color);
        }
        .article-meta i {
            margin-right: 0.5rem;
        }
        .article-content h2 {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent-color);
        }
        .article-content h3 {
            font-size: 1.4rem;
            color: var(--text-dark);
            margin: 2rem 0 1rem;
        }
        .article-content p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .article-content strong {
            color: var(--primary-color);
            font-weight: 700;
        }
        .article-content em {
            color: var(--secondary-color);
            font-style: italic;
        }
        .highlight-box {
            background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
            border-left: 5px solid var(--primary-color);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .feature-img {
            width: 100%;
            height: auto;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            transition: transform 0.5s ease;
        }
        .feature-img:hover {
            transform: scale(1.01);
        }
        .internal-link {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted var(--primary-color);
            transition: var(--transition);
        }
        .internal-link:hover {
            color: var(--secondary-color);
            border-bottom-style: solid;
        }
        .stats-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .stats-table th, .stats-table td {
            padding: 1rem;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }
        .stats-table th {
            background-color: var(--primary-color);
            color: white;
            font-weight: 600;
        }
        .stats-table tr:nth-child(even) {
            background-color: var(--bg-light);
        }
        .stats-table tr:hover {
            background-color: #eff6ff;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background-color: var(--bg-section);
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .widget h3 {
            font-size: 1.3rem;
            color: var(--primary-color);
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent-color);
        }
        .search-form input, .comment-form input, .comment-form textarea, .rating-form select {
            width: 100%;
            padding: 0.8rem 1rem;
            margin-bottom: 1rem;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-form input:focus, .comment-form input:focus, .comment-form textarea:focus, .rating-form select:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
        }
        .btn {
            display: inline-block;
            background-color: var(--primary-color);
            color: white;
            padding: 0.8rem 1.8rem;
            border: none;
            border-radius: 6px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            text-decoration: none;
        }
        .btn:hover {
            background-color: #1c3a7a;
            transform: translateY(-2px);
            box-shadow: 0 7px 14px rgba(0, 0, 0, 0.1);
        }
        .btn-accent {
            background-color: var(--secondary-color);
        }
        .btn-accent:hover {
            background-color: #b91c1c;
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }
        .star-rating i {
            color: #d1d5db;
            cursor: pointer;
            font-size: 1.5rem;
            transition: color 0.2s;
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: var(--accent-color);
        }
        .user-comment {
            padding: 1rem;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            margin-bottom: 1rem;
            background-color: var(--bg-light);
        }
        .user-comment .author {
            font-weight: 600;
            color: var(--primary-color);
        }
        .user-comment .date {
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .footer-links {
            background-color: var(--bg-section);
            padding: 3rem 0 2rem;
            border-top: 1px solid var(--border-color);
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-bottom: 2rem;
        }
        .web-link {
            background: linear-gradient(to right, #f8fafc, #f1f5f9);
            padding: 1rem 1.2rem;
            border-radius: 8px;
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateX(5px);
            background: linear-gradient(to right, #f1f5f9, #e2e8f0);
        }
        .web-link a {
            color: var(--text-dark);
            text-decoration: none;
            font-weight: 500;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .web-link a:hover {
            color: var(--primary-color);
        }
        .web-link i {
            color: var(--primary-color);
            transition: transform 0.3s;
        }
        .web-link:hover i {
            transform: translateX(3px);
        }
        footer {
            background-color: var(--primary-color);
            color: white;
            padding: 2rem 0;
            text-align: center;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1.5rem;
        }
        .social-links {
            display: flex;
            gap: 1.5rem;
        }
        .social-links a {
            color: white;
            font-size: 1.3rem;
            transition: var(--transition);
        }
        .social-links a:hover {
            color: var(--accent-color);
            transform: translateY(-3px);
        }
        .copyright {
            font-size: 0.9rem;
            opacity: 0.8;
        }
        @media (max-width: 1024px) {
            main {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .sidebar {
                order: -1;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: var(--bg-section);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem;
                box-shadow: var(--shadow);
                border-top: 1px solid var(--border-color);
            }
            nav.active ul {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .article-content {
                padding: 1.5rem;
            }
            .article-content h1 {
                font-size: 2rem;
            }
            .article-content h2 {
                font-size: 1.5rem;
            }
            .web-links-container {
                grid-template-columns: 1fr;
            }
        }