* {
            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, #1a2a6c, #2a4b8d);
            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;
        }
        .logo span {
            color: #ff6b35;
        }
        nav ul {
            display: flex;
            list-style: none;
        }
        nav ul li {
            margin-left: 1.5rem;
        }
        nav ul li a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }
        nav ul li a:hover {
            color: #ff6b35;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.5rem 0;
            margin-bottom: 2rem;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
        }
        .breadcrumb ul li {
            margin-right: 0.5rem;
        }
        .breadcrumb ul li:not(:last-child)::after {
            content: ">";
            margin-left: 0.5rem;
        }
        .breadcrumb a {
            color: #495057;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 2rem 0;
        }
        .article-header {
            margin-bottom: 2rem;
            text-align: center;
        }
        .article-header h1 {
            font-size: 2.5rem;
            color: #1a2a6c;
            margin-bottom: 1rem;
        }
        .article-meta {
            color: #6c757d;
            font-size: 0.9rem;
            margin-bottom: 1rem;
        }
        .article-content {
            background: white;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 15px rgba(0,0,0,0.05);
        }
        .article-section {
            margin-bottom: 2.5rem;
        }
        .article-section h2 {
            color: #2a4b8d;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e9ecef;
        }
        .article-section h3 {
            color: #495057;
            margin: 1.5rem 0 1rem 0;
        }
        .article-section p {
            margin-bottom: 1rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fff3cd;
            padding: 1rem;
            border-left: 4px solid #ffc107;
            margin: 1.5rem 0;
        }
        .feature-img {
            width: 100%;
            height: auto;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        .search-section {
            background: white;
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            margin-bottom: 2rem;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 0.75rem;
            border: 1px solid #ced4da;
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-form button {
            background: #2a4b8d;
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover {
            background: #1a2a6c;
        }
        .user-interaction {
            background: white;
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            margin: 2rem 0;
        }
        .rating-section {
            margin-bottom: 2rem;
        }
        .rating-stars {
            display: flex;
            margin: 1rem 0;
        }
        .star {
            font-size: 1.5rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
            margin-right: 0.25rem;
        }
        .star:hover, .star.active {
            color: #ffc107;
        }
        .comment-form textarea {
            width: 100%;
            padding: 0.75rem;
            border: 1px solid #ced4da;
            border-radius: 4px;
            margin-bottom: 1rem;
            font-family: inherit;
            resize: vertical;
            min-height: 100px;
        }
        .submit-btn {
            background: #2a4b8d;
            color: white;
            border: none;
            padding: 0.75rem 1.5rem;
            border-radius: 4px;
            cursor: pointer;
            transition: background 0.3s;
        }
        .submit-btn:hover {
            background: #1a2a6c;
        }
        .footer-links {
            background: #e9ecef;
            padding: 2rem 0;
            margin-top: 3rem;
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 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: #2a4b8d;
            text-decoration: none;
            font-weight: 500;
        }
        .web-link a:hover {
            text-decoration: underline;
        }
        footer {
            background: #343a40;
            color: white;
            text-align: center;
            padding: 2rem 0;
        }
        .copyright {
            margin-top: 1rem;
            font-size: 0.9rem;
            color: #adb5bd;
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                margin-top: 1rem;
            }
            nav ul.show {
                display: flex;
            }
            nav ul li {
                margin: 0.5rem 0;
            }
            .article-header h1 {
                font-size: 2rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input {
                border-radius: 4px;
                margin-bottom: 0.5rem;
            }
            .search-form button {
                border-radius: 4px;
                padding: 0.75rem;
            }
        }