* {
            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;
        }
        h1, h2, h3, h4 {
            color: #2c3e50;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            margin-top: 1.5rem;
            border-bottom: 3px solid #e74c3c;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2.2rem;
            margin-top: 2.5rem;
            padding-left: 0.5rem;
            border-left: 4px solid #3498db;
        }
        h3 {
            font-size: 1.8rem;
            margin-top: 2rem;
            color: #2980b9;
        }
        h4 {
            font-size: 1.4rem;
            margin-top: 1.5rem;
            color: #16a085;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Arial Black', Gadget, sans-serif;
            font-size: 2.2rem;
            color: #e74c3c;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo span {
            color: #3498db;
        }
        .nav-desktop {
            display: flex;
            gap: 1.5rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .nav-desktop a:hover {
            background-color: #e74c3c;
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: #2c3e50;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            padding: 1rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.2);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: white;
            text-decoration: none;
            padding: 0.8rem 1rem;
            border-bottom: 1px solid #34495e;
            transition: background-color 0.3s;
        }
        .nav-mobile a:hover {
            background-color: #34495e;
        }
        .breadcrumb {
            background-color: #ecf0f1;
            padding: 0.8rem 0;
            margin-bottom: 2rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb a {
            color: #3498db;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .separator {
            margin: 0 0.5rem;
            color: #7f8c8d;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        .content-area {
            background: white;
            padding: 2.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            height: fit-content;
            position: sticky;
            top: 100px;
        }
        .search-box {
            margin-bottom: 2rem;
        }
        .search-box h3 {
            font-size: 1.4rem;
            margin-bottom: 1rem;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 0.8rem;
            border: 2px solid #3498db;
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-form button {
            background-color: #3498db;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        .search-form button:hover {
            background-color: #2980b9;
        }
        .rating-widget {
            background-color: #f8f9fa;
            padding: 1.5rem;
            border-radius: 8px;
            margin-bottom: 2rem;
        }
        .stars {
            display: flex;
            gap: 0.3rem;
            margin-bottom: 1rem;
            justify-content: center;
        }
        .stars i {
            color: #f1c40f;
            font-size: 1.5rem;
            cursor: pointer;
            transition: transform 0.2s;
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        .rating-form button {
            width: 100%;
            padding: 0.8rem;
            background-color: #2ecc71;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            transition: background-color 0.3s;
        }
        .rating-form button:hover {
            background-color: #27ae60;
        }
        .comments-section {
            margin-top: 3rem;
        }
        .comment-form {
            background-color: #f8f9fa;
            padding: 1.5rem;
            border-radius: 8px;
            margin-bottom: 2rem;
        }
        .comment-form textarea {
            width: 100%;
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: 4px;
            resize: vertical;
            min-height: 120px;
            margin-bottom: 1rem;
            font-family: inherit;
        }
        .comment-form button {
            padding: 0.8rem 2rem;
            background-color: #3498db;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            transition: background-color 0.3s;
        }
        .comment-form button:hover {
            background-color: #2980b9;
        }
        .highlight-box {
            background: linear-gradient(135deg, #e3f2fd 0%, #f3e5f5 100%);
            border-left: 5px solid #9b59b6;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .price-comparison {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .price-card {
            background: white;
            border: 2px solid #eee;
            border-radius: 8px;
            padding: 1.5rem;
            text-align: center;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .price-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            border-color: #3498db;
        }
        .price-card h4 {
            color: #2c3e50;
        }
        .price {
            font-size: 1.8rem;
            color: #e74c3c;
            font-weight: bold;
            margin: 0.5rem 0;
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 10px;
            margin: 2rem auto;
            display: block;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            transition: transform 0.5s ease;
        }
        .article-image:hover {
            transform: scale(1.02);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #7f8c8d;
            margin-top: 0.5rem;
            margin-bottom: 2rem;
        }
        a {
            color: #3498db;
            text-decoration: none;
            transition: color 0.3s;
        }
        a:hover {
            color: #e74c3c;
            text-decoration: underline;
        }
        .internal-links {
            background-color: #f0f7ff;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .internal-links ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 0.8rem;
            list-style: none;
        }
        footer {
            background: #2c3e50;
            color: white;
            padding: 3rem 0 1.5rem;
            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: #ecf0f1;
            font-size: 1.4rem;
            margin-bottom: 1.2rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: #3498db;
        }
        friend-link {
            display: block;
            background-color: #34495e;
            padding: 1rem;
            border-radius: 6px;
            margin: 0.5rem 0;
        }
        friend-link a {
            color: #3498db;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #34495e;
            color: #bdc3c7;
            font-size: 0.9rem;
        }
        .last-updated {
            color: #7f8c8d;
            font-style: italic;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .emoji {
            font-size: 1.2rem;
            margin-right: 0.3rem;
        }
        .keyword {
            background-color: #fff3cd;
            padding: 0.2rem 0.5rem;
            border-radius: 3px;
            font-weight: 600;
        }
        .tag {
            display: inline-block;
            background-color: #e8f4fc;
            color: #2980b9;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.9rem;
            margin: 0.3rem;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .content-area, .sidebar {
                padding: 1.5rem;
            }
            .header-content {
                flex-wrap: wrap;
            }
            .price-comparison {
                grid-template-columns: 1fr;
            }
        }