* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #FF6B35;
            --secondary-color: #1A535C;
            --accent-color: #4ECDC4;
            --dark-color: #292F36;
            --light-color: #F7FFF7;
            --gray-light: #F0F3F5;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --border-radius: 8px;
            --container-width: 1200px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: var(--light-color);
            overflow-x: hidden;
        }
        h1, h2, h3, h4 {
            color: var(--secondary-color);
            margin-bottom: 1rem;
            font-weight: 700;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            margin-top: 1.5rem;
        }
        h2 {
            font-size: 2.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--accent-color);
            margin-top: 3rem;
        }
        h3 {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin-top: 2.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary-color);
            text-decoration: underline;
        }
        strong {
            color: var(--primary-color);
            font-weight: 700;
        }
        em {
            color: var(--secondary-color);
            font-style: italic;
        }
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-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: 1rem 0;
        }
        .logo a {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo a:hover {
            text-decoration: none;
            color: var(--secondary-color);
        }
        .logo-icon {
            color: var(--accent-color);
            font-size: 2.2rem;
        }
        .search-container {
            flex: 0 1 400px;
        }
        .search-form {
            display: flex;
            position: relative;
        }
        .search-input {
            flex: 1;
            padding: 12px 20px;
            border: 2px solid var(--gray-light);
            border-radius: 30px 0 0 30px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-input:focus {
            outline: none;
            border-color: var(--primary-color);
        }
        .search-button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 30px 30px 0;
            cursor: pointer;
            transition: var(--transition);
            font-size: 1rem;
        }
        .search-button:hover {
            background-color: var(--secondary-color);
        }
        nav {
            background-color: var(--secondary-color);
            padding: 0;
        }
        .nav-desktop {
            display: flex;
            justify-content: center;
            list-style: none;
        }
        .nav-desktop li {
            position: relative;
        }
        .nav-desktop a {
            color: white;
            padding: 1rem 1.5rem;
            display: block;
            font-weight: 600;
            transition: var(--transition);
        }
        .nav-desktop a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            text-decoration: none;
        }
        .nav-desktop a i {
            margin-right: 8px;
        }
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--primary-color);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: var(--secondary-color);
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.5s ease;
        }
        .nav-mobile.active {
            display: flex;
            max-height: 500px;
        }
        .nav-mobile a {
            color: white;
            padding: 1rem 1.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            display: block;
            font-weight: 600;
        }
        .nav-mobile a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            text-decoration: none;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: var(--gray-light);
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li {
            margin-right: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin-left: 0.5rem;
            color: #777;
        }
        main {
            padding: 2rem 0;
            background-color: white;
        }
        .article-header {
            margin-bottom: 3rem;
            text-align: center;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 2rem;
            color: #666;
            font-size: 0.95rem;
            margin-top: 1rem;
            flex-wrap: wrap;
        }
        .meta-item {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .featured-image {
            margin: 3rem 0;
            text-align: center;
        }
        .featured-image img {
            max-width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .featured-image img:hover {
            transform: scale(1.01);
        }
        .image-caption {
            margin-top: 0.5rem;
            font-style: italic;
            color: #666;
            font-size: 0.95rem;
        }
        .content-section {
            margin-bottom: 3rem;
        }
        .highlight-box {
            background-color: rgba(74, 144, 226, 0.1);
            border-left: 4px solid var(--primary-color);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .tip-box {
            background-color: rgba(76, 217, 100, 0.1);
            border-left: 4px solid #4CD964;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .warning-box {
            background-color: rgba(255, 59, 48, 0.1);
            border-left: 4px solid #FF3B30;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background-color: var(--gray-light);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
        }
        .stat-value {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary-color);
            margin-bottom: 0.5rem;
        }
        .stat-label {
            font-size: 1rem;
            color: var(--secondary-color);
            font-weight: 600;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            border-radius: var(--border-radius);
            overflow: hidden;
        }
        .comparison-table th,
        .comparison-table td {
            padding: 1rem;
            text-align: left;
            border-bottom: 1px solid #ddd;
        }
        .comparison-table th {
            background-color: var(--secondary-color);
            color: white;
            font-weight: 600;
        }
        .comparison-table tr:nth-child(even) {
            background-color: #f9f9f9;
        }
        .comparison-table tr:hover {
            background-color: rgba(26, 83, 92, 0.05);
        }
        .user-interaction {
            background-color: var(--gray-light);
            padding: 2.5rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
            box-shadow: var(--shadow);
        }
        .interaction-title {
            text-align: center;
            margin-bottom: 2rem;
            color: var(--secondary-color);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        .interaction-form {
            background-color: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--secondary-color);
        }
        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 2px rgba(255, 107, 53, 0.2);
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            direction: ltr;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #FFC107;
        }
        textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }
        .submit-button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 12px 24px;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            transition: var(--transition);
            display: block;
            width: 100%;
        }
        .submit-button:hover {
            background-color: var(--secondary-color);
        }
        .comments-section {
            margin: 3rem 0;
        }
        .comment {
            background-color: white;
            border: 1px solid #eee;
            border-radius: var(--border-radius);
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #eee;
        }
        .comment-author {
            font-weight: 700;
            color: var(--secondary-color);
        }
        .comment-date {
            color: #777;
            font-size: 0.9rem;
        }
        .comment-rating {
            color: #FFC107;
            margin-top: 0.3rem;
        }
        .web-links {
            background-color: var(--secondary-color);
            padding: 2.5rem 0;
            margin-top: 3rem;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background-color: rgba(255, 255, 255, 0.1);
            padding: 1.2rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }
        .web-link a {
            color: white;
            display: block;
            font-weight: 500;
        }
        .web-link a:hover {
            text-decoration: none;
        }
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 3rem 0 1.5rem;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-logo {
            flex: 1;
            min-width: 250px;
        }
        .footer-logo a {
            color: white;
            font-size: 1.8rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 1rem;
        }
        .footer-links {
            flex: 2;
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
        }
        .footer-column {
            flex: 1;
            min-width: 180px;
        }
        .footer-column h4 {
            color: white;
            margin-bottom: 1.2rem;
            font-size: 1.2rem;
        }
        .footer-column ul {
            list-style: none;
        }
        .footer-column li {
            margin-bottom: 0.7rem;
        }
        .footer-column a {
            color: #ccc;
            transition: var(--transition);
        }
        .footer-column a:hover {
            color: white;
            text-decoration: none;
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
            .header-top {
                flex-wrap: wrap;
            }
            .search-container {
                order: 3;
                flex: 1 1 100%;
                margin-top: 1rem;
            }
        }
        @media (max-width: 768px) {
            .menu-toggle {
                display: block;
            }
            .nav-desktop {
                display: none;
            }
            .nav-mobile {
                display: none;
            }
            .footer-content {
                flex-direction: column;
            }
            .interaction-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 576px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            h3 { font-size: 1.4rem; }
            .container {
                padding: 0 15px;
            }
            .user-interaction {
                padding: 1.5rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.8s ease forwards;
        }
        @media print {
            header, nav, .user-interaction, .web-links, footer {
                display: none;
            }
            body {
                background-color: white;
                color: black;
            }
            a {
                color: black;
                text-decoration: underline;
            }
        }