:root {
            --primary-color: #2a4365;
            --secondary-color: #c53030;
            --accent-color: #f6ad55;
            --text-color: #2d3748;
            --light-bg: #f7fafc;
            --dark-bg: #1a202c;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --border-radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: var(--light-bg);
            max-width: 100%;
            overflow-x: hidden;
        }
        header {
            background: linear-gradient(135deg, var(--primary-color) 0%, #1a365d 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .logo i {
            color: var(--accent-color);
        }
        nav {
            display: flex;
            align-items: center;
            gap: 2rem;
        }
        .nav-links {
            display: flex;
            gap: 1.5rem;
            list-style: none;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            padding: 0.5rem 0;
            position: relative;
            transition: var(--transition);
        }
        .nav-links a:hover {
            color: var(--accent-color);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-color);
            transition: var(--transition);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            padding: 0.5rem 1rem;
            border: none;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            width: 200px;
        }
        .search-form button {
            background: var(--accent-color);
            border: none;
            padding: 0.5rem 1rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: #ed8936;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .breadcrumb {
            background: #e2e8f0;
            padding: 0.75rem 1rem;
            font-size: 0.9rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 1rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
        }
        .article-content {
            background: white;
            padding: 2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--primary-color);
            font-size: 2.5rem;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        h2 {
            color: var(--primary-color);
            font-size: 1.8rem;
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e2e8f0;
        }
        h3 {
            color: var(--secondary-color);
            font-size: 1.4rem;
            margin: 1.5rem 0 0.75rem;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.1rem;
        }
        .highlight {
            background: linear-gradient(120deg, #fed7e2 0%, #e9d8fd 100%);
            padding: 1.5rem;
            border-left: 4px solid var(--secondary-color);
            margin: 1.5rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: var(--light-bg);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            text-align: center;
            border: 1px solid #cbd5e0;
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        .stat-card i {
            font-size: 2rem;
            color: var(--secondary-color);
            margin-bottom: 0.5rem;
        }
        .image-container {
            margin: 2rem 0;
            text-align: center;
        }
        .article-image {
            max-width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        aside {
            background: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            height: fit-content;
            position: sticky;
            top: 100px;
        }
        .sidebar-section {
            margin-bottom: 2rem;
        }
        .sidebar-section h3 {
            font-size: 1.2rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #e2e8f0;
        }
        .quick-links {
            list-style: none;
        }
        .quick-links li {
            margin-bottom: 0.75rem;
        }
        .quick-links a {
            color: var(--text-color);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            transition: var(--transition);
        }
        .quick-links a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        .interactive-section {
            background: var(--light-bg);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
        }
        .rating-form, .comment-form {
            margin-top: 1.5rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }
        .star {
            font-size: 1.8rem;
            color: #cbd5e0;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #f6ad55;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        input, textarea, select {
            padding: 0.75rem;
            border: 1px solid #cbd5e0;
            border-radius: var(--border-radius);
            font-family: inherit;
        }
        button[type="submit"] {
            background: var(--primary-color);
            color: white;
            border: none;
            padding: 0.75rem 1.5rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        button[type="submit"]:hover {
            background: #1a365d;
        }
        .footer-links {
            background: var(--dark-bg);
            padding: 2rem 1rem;
            margin-top: 3rem;
        }
        .web-links-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1rem;
        }
        .web-link {
            background: #2d3748;
            padding: 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .web-link:hover {
            background: #4a5568;
            transform: translateY(-3px);
        }
        .web-link a {
            color: #e2e8f0;
            text-decoration: none;
            font-size: 0.95rem;
        }
        .web-link a:hover {
            color: white;
            text-decoration: underline;
        }
        footer {
            background: var(--dark-bg);
            color: #cbd5e0;
            padding: 2rem 1rem;
            text-align: center;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
        }
        .copyright {
            margin-top: 1rem;
            padding-top: 1rem;
            border-top: 1px solid #4a5568;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            main {
                grid-template-columns: 1fr;
            }
            .hamburger {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--primary-color);
                flex-direction: column;
                padding: 1rem;
                display: none;
                box-shadow: var(--shadow);
            }
            .nav-links.active {
                display: flex;
            }
            .search-form input {
                width: 150px;
            }
            h1 {
                font-size: 2rem;
            }
            .header-container {
                flex-wrap: wrap;
            }
        }
        @media (max-width: 480px) {
            .search-form {
                order: 3;
                width: 100%;
                margin-top: 1rem;
            }
            .search-form input {
                width: 100%;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3em;
        }
        .keyword {
            background: #bee3f8;
            padding: 0.2em 0.4em;
            border-radius: 4px;
            font-weight: 600;
        }
        .tip {
            background: #c6f6d5;
            border-left: 4px solid #38a169;
            padding: 1rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .warning {
            background: #fed7d7;
            border-left: 4px solid #e53e3e;
            padding: 1rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .quote {
            font-style: italic;
            border-left: 4px solid var(--accent-color);
            padding-left: 1rem;
            margin: 1.5rem 0;
            color: #4a5568;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
        }
        .comparison-table th,
        .comparison-table td {
            padding: 1rem;
            text-align: left;
            border: 1px solid #e2e8f0;
        }
        .comparison-table th {
            background: var(--light-bg);
            font-weight: 600;
        }
        .comparison-table tr:hover {
            background: #f7fafc;
        }