* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #1e40af;
            --secondary-color: #dc2626;
            --accent-color: #f59e0b;
            --text-color: #1f2937;
            --light-bg: #f8fafc;
            --white: #ffffff;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: var(--light-bg);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary-color), #1e3a8a);
            color: var(--white);
            padding: 1rem 0;
            box-shadow: var(--shadow);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: bold;
            text-decoration: none;
            color: var(--white);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--accent-color);
        }
        .search-form {
            display: flex;
            gap: 10px;
        }
        .search-form input {
            padding: 8px 12px;
            border: none;
            border-radius: 5px;
            min-width: 250px;
        }
        .search-form button {
            background: var(--accent-color);
            color: var(--white);
            border: none;
            padding: 8px 15px;
            border-radius: 5px;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover {
            background: #e69500;
        }
        nav {
            background: var(--white);
            box-shadow: var(--shadow);
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .main-nav {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            text-decoration: none;
            color: var(--text-color);
            font-weight: 500;
            padding: 1rem 0;
            display: block;
            transition: color 0.3s;
        }
        .main-nav a:hover {
            color: var(--primary-color);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text-color);
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
        }
        main {
            padding: 2rem 0;
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding: 2rem;
            background: var(--white);
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .article-header h1 {
            color: var(--primary-color);
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 2rem;
            color: #6b7280;
            font-size: 0.9rem;
        }
        .content-section {
            background: var(--white);
            padding: 2rem;
            margin-bottom: 2rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .content-section h2 {
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent-color);
        }
        .content-section h3 {
            color: var(--secondary-color);
            margin: 1.5rem 0 1rem 0;
        }
        .feature-image {
            width: 100%;
            height: 400px;
            background: #e5e7eb;
            border-radius: 10px;
            margin: 2rem 0;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        .feature-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .highlight-box {
            background: linear-gradient(135deg, #dbeafe, #eff6ff);
            border-left: 4px solid var(--primary-color);
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: var(--white);
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: var(--shadow);
            text-align: center;
            border-top: 4px solid var(--accent-color);
        }
        .stat-card i {
            font-size: 2rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        .interactive-section {
            background: linear-gradient(135deg, var(--primary-color), #1e3a8a);
            color: var(--white);
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .rating-system {
            display: flex;
            gap: 1rem;
            margin: 1rem 0;
            flex-wrap: wrap;
        }
        .rating-star {
            font-size: 2rem;
            color: #d1d5db;
            cursor: pointer;
            transition: color 0.3s, transform 0.2s;
        }
        .rating-star:hover {
            color: var(--accent-color);
            transform: scale(1.1);
        }
        .comment-form {
            background: var(--white);
            padding: 2rem;
            border-radius: 10px;
            margin-top: 2rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 0.75rem;
            border: 1px solid #d1d5db;
            border-radius: 5px;
            font-size: 1rem;
        }
        .form-group textarea {
            height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background: var(--primary-color);
            color: var(--white);
            padding: 0.75rem 2rem;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.3s;
        }
        .submit-btn:hover {
            background: #1e3a8a;
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        .web-link {
            background: var(--white);
            padding: 1rem;
            border-radius: 5px;
            box-shadow: var(--shadow);
        }
        .web-link a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }
        .web-link a:hover {
            color: var(--secondary-color);
        }
        footer {
            background: var(--text-color);
            color: var(--white);
            padding: 3rem 0 1rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: var(--accent-color);
            margin-bottom: 1rem;
        }
        .footer-section a {
            color: #d1d5db;
            text-decoration: none;
            display: block;
            margin-bottom: 0.5rem;
            transition: color 0.3s;
        }
        .footer-section a:hover {
            color: var(--white);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #374151;
            color: #9ca3af;
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                gap: 1rem;
            }
            .search-form input {
                min-width: 200px;
            }
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                position: absolute;
                top: 100%;
                left: 0;
                background: var(--white);
                box-shadow: var(--shadow);
                z-index: 1000;
            }
            .main-nav.active {
                display: flex;
            }
            .main-nav a {
                padding: 1rem 2rem;
                border-bottom: 1px solid #e5e7eb;
            }
            .article-header h1 {
                font-size: 2rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .rating-system {
                justify-content: center;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 15px;
            }
            .article-header h1 {
                font-size: 1.8rem;
            }
            .content-section {
                padding: 1.5rem;
            }
            .feature-image {
                height: 250px;
            }
        }
        .stat-card {
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
        }
        .web-link {
            transition: transform 0.2s;
        }
        .web-link:hover {
            transform: translateX(5px);
        }
        @media print {
            header, footer, .interactive-section {
                display: none;
            }
            .content-section {
                box-shadow: none;
                border: 1px solid #ddd;
            }
        }