* {
            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, #ff6b35, #f7931e);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: bold;
        }
        .logo a {
            color: white;
            text-decoration: none;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            padding: 8px 12px;
            border: none;
            border-radius: 4px 0 0 4px;
            width: 250px;
        }
        .search-form button {
            background: #2c3e50;
            color: white;
            border: none;
            padding: 8px 15px;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
        }
        nav {
            background: #2c3e50;
            margin-top: 1rem;
        }
        .nav-desktop {
            display: flex;
            list-style: none;
        }
        .nav-desktop li {
            position: relative;
        }
        .nav-desktop a {
            color: white;
            text-decoration: none;
            padding: 12px 20px;
            display: block;
            transition: background 0.3s;
        }
        .nav-desktop a:hover {
            background: #34495e;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            list-style: none;
            background: #34495e;
        }
        .nav-mobile.active {
            display: block;
        }
        .nav-mobile a {
            color: white;
            text-decoration: none;
            padding: 12px 20px;
            display: block;
            border-bottom: 1px solid #4a6278;
        }
        .breadcrumb {
            padding: 10px 0;
            background: #ecf0f1;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #3498db;
            text-decoration: none;
        }
        .breadcrumb span {
            color: #7f8c8d;
        }
        main {
            padding: 2rem 0;
        }
        .article-header {
            margin-bottom: 2rem;
            text-align: center;
        }
        .article-header h1 {
            font-size: 2.2rem;
            color: #2c3e50;
            margin-bottom: 1rem;
        }
        .article-meta {
            color: #7f8c8d;
            font-size: 0.9rem;
            display: flex;
            justify-content: center;
            gap: 15px;
        }
        .content-section {
            background: white;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            margin-bottom: 2rem;
        }
        .content-section h2 {
            color: #e74c3c;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #f1f1f1;
        }
        .content-section h3 {
            color: #3498db;
            margin: 1.5rem 0 1rem 0;
        }
        .content-section p {
            margin-bottom: 1rem;
            text-align: justify;
        }
        .highlight {
            background: #fff9e6;
            padding: 15px;
            border-left: 4px solid #f1c40f;
            margin: 1.5rem 0;
        }
        .feature-list {
            list-style: none;
            margin: 1.5rem 0;
        }
        .feature-list li {
            padding: 8px 0;
            position: relative;
            padding-left: 30px;
        }
        .feature-list li:before {
            content: "✓";
            color: #27ae60;
            position: absolute;
            left: 0;
            font-weight: bold;
        }
        .download-box {
            background: linear-gradient(135deg, #3498db, #2c3e50);
            color: white;
            padding: 2rem;
            border-radius: 8px;
            text-align: center;
            margin: 2rem 0;
        }
        .download-btn {
            display: inline-block;
            background: #e74c3c;
            color: white;
            padding: 12px 30px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: bold;
            margin-top: 1rem;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .download-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }
        .image-container {
            margin: 2rem 0;
            text-align: center;
        }
        .article-image {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.1);
        }
        .comments-section {
            margin-top: 3rem;
        }
        .comment-form {
            background: white;
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            margin-bottom: 2rem;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 5px;
            font-weight: bold;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 10px;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-family: inherit;
        }
        .rating {
            display: flex;
            gap: 5px;
            margin: 10px 0;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 1.5rem;
            color: #ddd;
            cursor: pointer;
        }
        .rating input:checked ~ label {
            color: #f1c40f;
        }
        .rating label:hover,
        .rating label:hover ~ label {
            color: #f1c40f;
        }
        .submit-btn {
            background: #27ae60;
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 4px;
            cursor: pointer;
            font-weight: bold;
        }
        .submit-btn:hover {
            background: #219653;
        }
        .footer-links {
            background: #34495e;
            padding: 2rem 0;
            margin-top: 3rem;
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
        }
        .web-link {
            background: #2c3e50;
            padding: 12px 15px;
            border-radius: 4px;
        }
        .web-link a {
            color: #ecf0f1;
            text-decoration: none;
        }
        .web-link a:hover {
            color: #3498db;
        }
        footer {
            background: #2c3e50;
            color: #ecf0f1;
            text-align: center;
            padding: 1.5rem 0;
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                gap: 15px;
            }
            .search-form input {
                width: 200px;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 20px;
                right: 20px;
            }
            .web-links {
                grid-template-columns: 1fr;
            }
            .article-header h1 {
                font-size: 1.8rem;
            }
        }