:root {
            --primary: #1e3a8a;
            --secondary: #dc2626;
            --accent: #fbbf24;
            --dark: #0f172a;
            --light: #f8fafc;
            --gray: #64748b;
            --transition: all 0.3s ease;
            --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
            --radius: 12px;
        }
        * {
            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(--dark);
            background-color: var(--light);
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary), var(--dark));
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 2rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--accent);
        }
        .logo span {
            background: linear-gradient(to right, var(--accent), #f59e0b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 2rem;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.5rem;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .nav-links a:hover,
        .nav-links a.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: var(--accent);
        }
        .search-box {
            display: flex;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50px;
            padding: 0.5rem 1rem;
            align-items: center;
        }
        .search-box input {
            background: transparent;
            border: none;
            color: white;
            outline: none;
            width: 200px;
        }
        .search-box button {
            background: none;
            border: none;
            color: var(--accent);
            cursor: pointer;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #e2e8f0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            margin-right: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 2rem 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            border-radius: var(--radius);
            padding: 2.5rem;
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--primary);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 4px solid var(--accent);
            padding-bottom: 0.5rem;
        }
        h2 {
            color: var(--dark);
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e2e8f0;
        }
        h3 {
            color: var(--primary);
            font-size: 1.5rem;
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            color: #334155;
        }
        .lead {
            font-size: 1.3rem;
            color: var(--primary);
            font-weight: 600;
            background: #f0f9ff;
            padding: 1.5rem;
            border-radius: var(--radius);
            border-left: 5px solid var(--accent);
            margin-bottom: 2.5rem;
        }
        .highlight-box {
            background: linear-gradient(135deg, #fef3c7, #fde68a);
            border-left: 5px solid var(--accent);
            padding: 1.5rem;
            border-radius: var(--radius);
            margin: 2rem 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: white;
            border-radius: var(--radius);
            padding: 1.5rem;
            box-shadow: var(--shadow);
            text-align: center;
            border-top: 5px solid var(--primary);
        }
        .stat-card i {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }
        .stat-card h4 {
            color: var(--dark);
            margin-bottom: 0.5rem;
        }
        .stat-card .number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--secondary);
            line-height: 1;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
            display: block;
            margin: 2rem auto;
            box-shadow: var(--shadow);
            border: 5px solid white;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: -1.5rem;
            margin-bottom: 2rem;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
        }
        a:hover {
            color: var(--secondary);
            text-decoration: underline;
        }
        .content-link {
            background: #eff6ff;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .content-link:hover {
            background: #dbeafe;
            text-decoration: none;
        }
        .quote {
            font-style: italic;
            padding: 2rem;
            background: #f8fafc;
            border-radius: var(--radius);
            margin: 2rem 0;
            position: relative;
            border-left: 5px solid var(--primary);
        }
        .quote::before {
            content: '"';
            font-size: 4rem;
            color: var(--accent);
            position: absolute;
            top: -1rem;
            left: 1rem;
            opacity: 0.5;
        }
        .author {
            font-weight: bold;
            color: var(--primary);
            margin-top: 1rem;
            text-align: right;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            border-radius: var(--radius);
            overflow: hidden;
        }
        .comparison-table th {
            background-color: var(--primary);
            color: white;
            padding: 1rem;
            text-align: left;
        }
        .comparison-table td {
            padding: 1rem;
            border-bottom: 1px solid #e2e8f0;
        }
        .comparison-table tr:nth-child(even) {
            background-color: #f8fafc;
        }
        .comparison-table tr:hover {
            background-color: #eff6ff;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            border-radius: var(--radius);
            padding: 1.5rem;
            box-shadow: var(--shadow);
        }
        .widget-title {
            color: var(--primary);
            font-size: 1.3rem;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e2e8f0;
        }
        .related-links {
            list-style: none;
            margin: 0;
        }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed #e2e8f0;
        }
        .related-links a {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-links i {
            color: var(--accent);
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 1.8rem;
            color: #e2e8f0;
            margin: 1rem 0;
            cursor: pointer;
        }
        .stars .active {
            color: var(--accent);
        }
        .comment-form textarea,
        .comment-form input {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 1px solid #cbd5e1;
            border-radius: var(--radius);
            font-family: inherit;
        }
        .comment-form button {
            background: linear-gradient(135deg, var(--primary), var(--dark));
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: var(--radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            width: 100%;
        }
        .comment-form button:hover {
            background: linear-gradient(135deg, var(--secondary), #b91c1c);
        }
        .user-comments {
            margin-top: 2rem;
        }
        .comment {
            background: #f8fafc;
            padding: 1rem;
            border-radius: var(--radius);
            margin-bottom: 1rem;
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 0.5rem;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .comment-user {
            font-weight: bold;
            color: var(--primary);
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #cbd5e1;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin: 2rem 0;
            padding: 1.5rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius);
        }
        .friend-link-title {
            color: var(--accent);
            margin-bottom: 1rem;
            font-size: 1.2rem;
        }
        .friend-link-list {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            list-style: none;
        }
        .friend-link-list a {
            background: rgba(255, 255, 255, 0.1);
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 50px;
            transition: var(--transition);
        }
        .friend-link-list a:hover {
            background: var(--accent);
            color: var(--dark);
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #334155;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .nav-links,
            .search-box {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .mobile-menu {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--dark);
                padding: 1rem;
                transform: translateY(-100%);
                transition: var(--transition);
                opacity: 0;
                visibility: hidden;
                box-shadow: var(--shadow);
            }
            .mobile-menu.active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .mobile-nav-links {
                list-style: none;
            }
            .mobile-nav-links li {
                margin-bottom: 1rem;
            }
            .mobile-nav-links a {
                color: white;
                text-decoration: none;
                font-size: 1.1rem;
                display: block;
                padding: 0.8rem;
                border-radius: var(--radius);
            }
            .mobile-nav-links a:hover {
                background: rgba(255, 255, 255, 0.1);
            }
            .mobile-search {
                margin-top: 1rem;
                display: flex;
            }
            .mobile-search input {
                flex: 1;
                padding: 0.8rem;
                border-radius: var(--radius) 0 0 var(--radius);
                border: none;
            }
            .mobile-search button {
                background: var(--accent);
                color: var(--dark);
                border: none;
                padding: 0 1.2rem;
                border-radius: 0 var(--radius) var(--radius) 0;
                cursor: pointer;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .article-content {
                padding: 1.5rem;
            }
        }
        @media print {
            header, aside, footer, .breadcrumb, .comment-form, .user-comments {
                display: none;
            }
            main {
                grid-template-columns: 1fr;
            }
            .article-content {
                box-shadow: none;
                padding: 0;
            }
        }