* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a237e, #283593);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: bold;
        }
        .logo a {
            color: white;
            text-decoration: none;
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }
        .desktop-nav a:hover {
            color: #ffd54f;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            background: #1a237e;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            z-index: 1000;
        }
        .mobile-nav.active {
            display: block;
        }
        .mobile-nav ul {
            list-style: none;
            padding: 1rem;
        }
        .mobile-nav li {
            margin-bottom: 1rem;
        }
        .mobile-nav a {
            color: white;
            text-decoration: none;
            display: block;
            padding: 0.5rem 0;
        }
        .breadcrumb {
            background: #e8eaf6;
            padding: 0.8rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #283593;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-section {
            background: white;
            padding: 2rem 0;
            text-align: center;
            margin: 2rem 0;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
        }
        .search-input {
            flex: 1;
            padding: 0.8rem 1rem;
            border: 2px solid #283593;
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-btn {
            background: #283593;
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-btn:hover {
            background: #1a237e;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
            margin: 2rem 0;
        }
        .article-content {
            background: white;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }
        h1 {
            color: #1a237e;
            margin-bottom: 1.5rem;
            font-size: 2.2rem;
        }
        h2 {
            color: #283593;
            margin: 2rem 0 1rem 0;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e8eaf6;
        }
        h3 {
            color: #3949ab;
            margin: 1.5rem 0 0.8rem 0;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .highlight {
            background: #e8eaf6;
            padding: 1.5rem;
            border-left: 4px solid #283593;
            margin: 1.5rem 0;
            border-radius: 0 4px 4px 0;
        }
        .feature-img {
            width: 100%;
            height: auto;
            border-radius: 8px;
            margin: 1.5rem 0;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }
        .rating-widget {
            text-align: center;
            margin-bottom: 2rem;
        }
        .stars {
            margin: 1rem 0;
            font-size: 1.5rem;
            color: #ffc107;
        }
        .rating-btn {
            background: #283593;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 4px;
            cursor: pointer;
            transition: background 0.3s;
        }
        .rating-btn:hover {
            background: #1a237e;
        }
        .comment-form textarea {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ddd;
            border-radius: 4px;
            margin-bottom: 1rem;
            resize: vertical;
            min-height: 100px;
        }
        .comment-btn {
            background: #283593;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 4px;
            cursor: pointer;
            transition: background 0.3s;
        }
        .comment-btn:hover {
            background: #1a237e;
        }
        .footer-links {
            background: #e8eaf6;
            padding: 2rem 0;
            margin-top: 3rem;
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
        }
        .web-link {
            background: white;
            padding: 1rem;
            border-radius: 4px;
            box-shadow: 0 1px 3px rgba(0,0,0,0.1);
        }
        .web-link a {
            color: #283593;
            text-decoration: none;
            font-weight: 500;
        }
        .web-link a:hover {
            text-decoration: underline;
        }
        footer {
            background: #1a237e;
            color: white;
            text-align: center;
            padding: 2rem 0;
        }
        .copyright {
            margin-top: 1rem;
            font-size: 0.9rem;
            opacity: 0.8;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .mobile-menu-btn {
                display: block;
            }
            .main-content {
                grid-template-columns: 1fr;
            }
            .web-links {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 1.8rem;
            }
        }
        .interactive-card {
            background: white;
            border-radius: 8px;
            padding: 1.5rem;
            margin: 1.5rem 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .interactive-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        .stat-item {
            text-align: center;
            padding: 1.5rem;
            background: #e8eaf6;
            border-radius: 8px;
        }
        .stat-number {
            font-size: 2rem;
            font-weight: bold;
            color: #283593;
        }
        .tip-box {
            background: #e8f5e9;
            border-left: 4px solid #4caf50;
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 4px 4px 0;
        }
        .warning-box {
            background: #ffebee;
            border-left: 4px solid #f44336;
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 4px 4px 0;
        }