* {
            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;
        }
        .header {
            background: linear-gradient(135deg, #1a1a1a 0%, #333 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 2rem;
            font-weight: bold;
            color: #ff6b00;
            text-decoration: none;
        }
        .logo:hover {
            color: #ff8c00;
        }
        .nav {
            display: flex;
            gap: 2rem;
        }
        .nav a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
        }
        .nav a:hover {
            color: #ff6b00;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: 1rem;
            padding: 1rem 0;
        }
        .mobile-nav.active {
            display: flex;
        }
        .breadcrumb {
            background: #e9ecef;
            padding: 0.5rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #666;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: #ff6b00;
        }
        .main-content {
            background: white;
            padding: 2rem;
            margin: 2rem auto;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .article-header {
            text-align: center;
            margin-bottom: 2rem;
        }
        .article-title {
            font-size: 2.5rem;
            color: #1a1a1a;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            color: #666;
            font-size: 0.9rem;
            margin-bottom: 1rem;
        }
        .content-section {
            margin-bottom: 3rem;
        }
        .section-title {
            font-size: 1.8rem;
            color: #ff6b00;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ff6b00;
        }
        .feature-list {
            list-style: none;
            margin: 1rem 0;
        }
        .feature-list li {
            padding: 0.5rem 0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .feature-list i {
            color: #ff6b00;
        }
        .download-section {
            background: linear-gradient(135deg, #ff6b00 0%, #ff8c00 100%);
            color: white;
            padding: 2rem;
            border-radius: 10px;
            text-align: center;
            margin: 2rem 0;
        }
        .download-btn {
            display: inline-block;
            background: white;
            color: #ff6b00;
            padding: 1rem 2rem;
            text-decoration: none;
            border-radius: 50px;
            font-weight: bold;
            font-size: 1.2rem;
            margin: 1rem 0;
            transition: transform 0.3s ease;
        }
        .download-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }
        .search-section {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .search-form {
            display: flex;
            gap: 1rem;
        }
        .search-input {
            flex: 1;
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: 50px;
            font-size: 1rem;
        }
        .search-btn {
            background: #ff6b00;
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 50px;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s ease;
        }
        .search-btn:hover {
            background: #ff8c00;
        }
        .comment-section {
            margin: 3rem 0;
        }
        .comment-form {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: 10px;
            margin-bottom: 2rem;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        .form-input, .form-textarea {
            width: 100%;
            padding: 1rem;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-size: 1rem;
        }
        .form-textarea {
            height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background: #ff6b00;
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 5px;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s ease;
        }
        .submit-btn:hover {
            background: #ff8c00;
        }
        .rating-section {
            text-align: center;
            margin: 2rem 0;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .star:hover,
        .star.active {
            color: #ff6b00;
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        .web-link {
            background: #f8f9fa;
            padding: 1rem;
            border-radius: 5px;
            text-align: center;
        }
        .web-link a {
            color: #ff6b00;
            text-decoration: none;
            font-weight: 500;
        }
        .web-link a:hover {
            text-decoration: underline;
        }
        .footer {
            background: #1a1a1a;
            color: 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: #ff6b00;
            margin-bottom: 1rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.5rem;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer-links a:hover {
            color: #ff6b00;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #333;
            color: #666;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .nav {
                display: none;
            }
            .mobile-menu-btn {
                display: block;
            }
            .article-title {
                font-size: 2rem;
            }
            .search-form {
                flex-direction: column;
            }
            .header-content {
                flex-wrap: wrap;
            }
            .main-content {
                padding: 1rem;
                margin: 1rem;
            }
        }
        .fade-in {
            animation: fadeIn 1s ease-in;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .hover-lift {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .hover-lift:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.2);
        }