:root {
            --primary-color: #c62828;
            --secondary-color: #2e7d32;
            --dark-color: #1a1a2e;
            --light-color: #f5f5f5;
            --accent-color: #ff9800;
            --text-color: #333;
            --text-light: #666;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
            --border-radius: 8px;
            --container-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-color);
            background-color: #f9f9f9;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-color);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--dark-color);
            color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 700;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo a:hover {
            color: var(--accent-color);
        }
        .logo i {
            color: var(--primary-color);
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .desktop-nav a {
            color: white;
            font-weight: 500;
            padding: 8px 0;
            position: relative;
        }
        .desktop-nav a:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent-color);
            transition: var(--transition);
        }
        .desktop-nav a:hover:after {
            width: 100%;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            background-color: var(--dark-color);
            padding: 20px;
            border-top: 1px solid #444;
        }
        .mobile-nav.active {
            display: block;
        }
        .mobile-nav ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .mobile-nav a {
            color: white;
            display: block;
            padding: 10px;
            border-radius: var(--border-radius);
        }
        .mobile-nav a:hover {
            background-color: rgba(255,255,255,0.1);
        }
        .breadcrumb {
            background-color: #f1f1f1;
            padding: 12px 0;
            font-size: 0.9rem;
            margin-bottom: 30px;
        }
        .breadcrumb .container {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb i {
            margin: 0 5px;
            color: #999;
        }
        main {
            padding: 40px 0;
            background-color: white;
        }
        .article-header {
            text-align: center;
            margin-bottom: 40px;
            padding-bottom: 25px;
            border-bottom: 2px solid #eee;
        }
        .article-header h1 {
            font-size: 2.5rem;
            color: var(--dark-color);
            margin-bottom: 15px;
            line-height: 1.3;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 20px;
            color: var(--text-light);
            font-size: 0.95rem;
            flex-wrap: wrap;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            font-size: 1.1rem;
        }
        .article-content h2 {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #eee;
        }
        .article-content h3 {
            font-size: 1.5rem;
            color: var(--secondary-color);
            margin: 30px 0 15px;
        }
        .article-content h4 {
            font-size: 1.3rem;
            color: var(--dark-color);
            margin: 25px 0 12px;
        }
        .article-content p {
            margin-bottom: 1.5em;
            text-align: justify;
        }
        .article-content strong {
            color: var(--primary-color);
            font-weight: 700;
        }
        .highlight-box {
            background-color: #fff8e1;
            border-left: 5px solid var(--accent-color);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .featured-image {
            margin: 30px 0;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-image figcaption {
            text-align: center;
            font-style: italic;
            padding: 10px;
            background-color: #f5f5f5;
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .tip-card {
            background-color: #f0f7ff;
            border-radius: var(--border-radius);
            padding: 20px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid #d1e3ff;
        }
        .tip-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.15);
        }
        .tip-card h4 {
            color: var(--primary-color);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 0;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background-color: #f8f9fa;
            border-radius: var(--border-radius);
            padding: 25px;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--dark-color);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary-color);
            font-size: 1.4rem;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #a00;
        }
        .rating-widget form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .stars {
            display: flex;
            gap: 5px;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            margin-bottom: 10px;
        }
        .stars i:hover,
        .stars i.active {
            color: var(--accent-color);
        }
        .rating-widget input,
        .rating-widget textarea {
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
        }
        .rating-widget textarea {
            min-height: 100px;
            resize: vertical;
        }
        .rating-widget button {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 12px;
            border-radius: var(--border-radius);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-widget button:hover {
            background-color: #1b5e20;
        }
        .comment-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .comment {
            background-color: white;
            padding: 15px;
            border-radius: var(--border-radius);
            border: 1px solid #eee;
        }
        .comment-author {
            font-weight: 600;
            color: var(--dark-color);
            margin-bottom: 5px;
        }
        .comment-date {
            font-size: 0.8rem;
            color: #999;
        }
        .comment-text {
            margin-top: 10px;
        }
        .tab-container {
            margin: 40px 0;
        }
        .tab-buttons {
            display: flex;
            border-bottom: 2px solid #eee;
            flex-wrap: wrap;
        }
        .tab-btn {
            padding: 12px 25px;
            background: none;
            border: none;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-light);
            cursor: pointer;
            transition: var(--transition);
            border-bottom: 3px solid transparent;
        }
        .tab-btn.active {
            color: var(--primary-color);
            border-bottom-color: var(--primary-color);
        }
        .tab-content {
            padding: 25px;
            background-color: #f9f9f9;
            border-radius: 0 0 var(--border-radius) var(--border-radius);
        }
        .tab-pane {
            display: none;
        }
        .tab-pane.active {
            display: block;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 25px 0;
            box-shadow: var(--shadow);
            border-radius: var(--border-radius);
            overflow: hidden;
        }
        .comparison-table th,
        .comparison-table td {
            padding: 15px;
            text-align: left;
            border-bottom: 1px solid #eee;
        }
        .comparison-table th {
            background-color: var(--dark-color);
            color: white;
            font-weight: 600;
        }
        .comparison-table tr:nth-child(even) {
            background-color: #f8f9fa;
        }
        .comparison-table tr:hover {
            background-color: #e3f2fd;
        }
        .footer-links {
            background-color: #f1f1f1;
            padding: 40px 0 20px;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            margin-bottom: 30px;
        }
        .web-link {
            background-color: white;
            padding: 15px;
            border-radius: var(--border-radius);
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: #e8f5e9;
            transform: translateY(-3px);
        }
        .web-link a {
            color: var(--dark-color);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 40px 0 20px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-section h3 {
            color: var(--accent-color);
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .footer-section p {
            color: #ccc;
            line-height: 1.6;
        }
        .footer-section ul {
            list-style: none;
        }
        .footer-section ul li {
            margin-bottom: 10px;
        }
        .footer-section ul a {
            color: #ccc;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-section ul a:hover {
            color: white;
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .mobile-menu-btn {
                display: block;
            }
            .article-header h1 {
                font-size: 2rem;
            }
            .content-wrapper {
                gap: 30px;
            }
            .tips-grid {
                grid-template-columns: 1fr;
            }
            .tab-buttons {
                overflow-x: auto;
                flex-wrap: nowrap;
            }
            .tab-btn {
                white-space: nowrap;
            }
        }