* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #2c3e50;
            --secondary: #3498db;
            --accent: #e74c3c;
            --light: #ecf0f1;
            --dark: #2c3e50;
            --gray: #95a5a6;
            --success: #27ae60;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --border-radius: 8px;
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f9f9f9;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--primary);
            color: white;
            padding: 1.2rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
        }
        .logo i {
            color: var(--accent);
            margin-right: 10px;
            font-size: 2.5rem;
        }
        .logo a:hover {
            color: var(--light);
        }
        nav.desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav.desktop-nav a {
            color: white;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0.8rem;
            border-radius: var(--border-radius);
        }
        nav.desktop-nav a:hover,
        nav.desktop-nav a.active {
            background-color: var(--secondary);
            color: white;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .mobile-nav {
            position: fixed;
            top: 80px;
            left: 0;
            width: 100%;
            background-color: var(--dark);
            padding: 1rem;
            transform: translateY(-100%);
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 999;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active {
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
        }
        .mobile-nav ul {
            list-style: none;
        }
        .mobile-nav li {
            margin-bottom: 1rem;
        }
        .mobile-nav a {
            color: white;
            font-size: 1.2rem;
            display: block;
            padding: 0.8rem;
            border-radius: var(--border-radius);
        }
        .mobile-nav a:hover {
            background-color: var(--secondary);
        }
        .breadcrumb {
            background-color: var(--light);
            padding: 1rem 0;
            margin-bottom: 2rem;
            font-size: 0.95rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            margin-right: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin-left: 0.5rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--dark);
        }
        .breadcrumb a:hover {
            color: var(--secondary);
        }
        main {
            padding: 2rem 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        .content-area {
            background-color: white;
            padding: 2.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        article h1 {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
            line-height: 1.3;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 1rem;
        }
        article h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed var(--gray);
        }
        article h3 {
            font-size: 1.6rem;
            color: var(--secondary);
            margin: 2rem 0 1rem;
        }
        article h4 {
            font-size: 1.3rem;
            color: var(--dark);
            margin: 1.5rem 0 0.8rem;
        }
        article p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        article strong {
            color: var(--primary);
            font-weight: 700;
        }
        article em {
            color: var(--accent);
            font-style: italic;
        }
        .highlight-box {
            background-color: #e8f4fc;
            border-left: 5px solid var(--secondary);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .tip-box {
            background-color: #fff8e1;
            border-left: 5px solid #ffc107;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .warning-box {
            background-color: #ffeaea;
            border-left: 5px solid var(--accent);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.7rem;
        }
        .featured-image {
            width: 100%;
            margin: 2.5rem 0;
            text-align: center;
        }
        .featured-image img {
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            border: 5px solid white;
            max-height: 500px;
            object-fit: cover;
        }
        .image-caption {
            font-style: italic;
            color: var(--gray);
            margin-top: 0.8rem;
            font-size: 0.95rem;
        }
        .table-container {
            overflow-x: auto;
            margin: 2rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 1rem;
        }
        th, td {
            padding: 1rem;
            text-align: left;
            border: 1px solid #ddd;
        }
        th {
            background-color: var(--primary);
            color: white;
        }
        tr:nth-child(even) {
            background-color: #f2f2f2;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background-color: white;
            padding: 1.8rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--primary);
            margin-bottom: 1.2rem;
            padding-bottom: 0.7rem;
            border-bottom: 2px solid var(--light);
            font-size: 1.5rem;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 0.9rem;
            border: 2px solid #ddd;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: var(--primary);
        }
        .rating-widget .stars {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 1.2rem;
        }
        .rating-widget .stars i {
            color: #ffc107;
            font-size: 1.8rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-widget .stars i:hover {
            transform: scale(1.2);
        }
        .rating-widget form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .rating-widget input,
        .rating-widget textarea {
            padding: 0.8rem;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 1rem;
        }
        .rating-widget textarea {
            min-height: 120px;
            resize: vertical;
        }
        .rating-widget button {
            background-color: var(--success);
            color: white;
            border: none;
            padding: 1rem;
            border-radius: var(--border-radius);
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-widget button:hover {
            background-color: #219653;
        }
        .quick-links ul {
            list-style: none;
            margin-left: 0;
        }
        .quick-links li {
            margin-bottom: 0.8rem;
            padding-left: 1.5rem;
            position: relative;
        }
        .quick-links li::before {
            content: "▶";
            position: absolute;
            left: 0;
            color: var(--secondary);
            font-size: 0.8rem;
        }
        .quick-links a {
            color: var(--dark);
            display: block;
            padding: 0.5rem 0;
        }
        .quick-links a:hover {
            color: var(--secondary);
            padding-left: 0.5rem;
        }
        .comments-section {
            margin-top: 4rem;
            padding-top: 2rem;
            border-top: 2px solid var(--light);
        }
        .comments-section h2 {
            color: var(--primary);
            margin-bottom: 2rem;
        }
        .comment-form {
            background-color: #f8f9fa;
            padding: 2rem;
            border-radius: var(--border-radius);
            margin-bottom: 3rem;
        }
        .comment-form h3 {
            margin-bottom: 1.5rem;
        }
        .comment-form .form-group {
            margin-bottom: 1.5rem;
        }
        .comment-form label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark);
        }
        .comment-form input,
        .comment-form textarea {
            width: 100%;
            padding: 0.9rem;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 1rem;
        }
        .comment-form textarea {
            min-height: 150px;
        }
        .comment-form button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: var(--border-radius);
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .comment-form button:hover {
            background-color: var(--secondary);
        }
        .comment-list {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .comment {
            background-color: white;
            padding: 1.8rem;
            border-radius: var(--border-radius);
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
            border-left: 4px solid var(--secondary);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1rem;
            flex-wrap: wrap;
        }
        .comment-author {
            font-weight: bold;
            color: var(--primary);
            font-size: 1.1rem;
        }
        .comment-date {
            color: var(--gray);
            font-size: 0.9rem;
        }
        .comment-rating {
            color: #ffc107;
        }
        .comment-body {
            line-height: 1.6;
        }
        .footer-links {
            background-color: var(--light);
            padding: 3rem 0;
            margin-top: 4rem;
        }
        .footer-links .container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 2rem;
        }
        .web-link {
            background-color: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: 0 3px 6px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.1);
        }
        .web-link a {
            color: var(--dark);
            font-weight: 600;
            font-size: 1.1rem;
            display: block;
        }
        .web-link a:hover {
            color: var(--secondary);
        }
        .web-link p {
            margin-top: 0.8rem;
            color: var(--gray);
            font-size: 0.95rem;
        }
        footer {
            background-color: var(--primary);
            color: white;
            padding: 3rem 0 2rem;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }
        .footer-logo {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            letter-spacing: 1px;
        }
        .footer-links-mini {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-links-mini a {
            color: #ddd;
            font-weight: 600;
        }
        .footer-links-mini a:hover {
            color: white;
        }
        .copyright {
            color: #bdc3c7;
            font-size: 0.95rem;
            border-top: 1px solid #34495e;
            padding-top: 2rem;
            width: 100%;
        }
        @media (max-width: 768px) {
            .header-container {
                padding: 0 15px;
            }
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .content-area {
                padding: 1.8rem;
            }
            article h1 {
                font-size: 2.2rem;
            }
            article h2 {
                font-size: 1.8rem;
            }
            article h3 {
                font-size: 1.4rem;
            }
            .sidebar-widget {
                padding: 1.5rem;
            }
            .comment-form {
                padding: 1.5rem;
            }
            .footer-links .container {
                grid-template-columns: 1fr;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .content-area, .sidebar-widget, .comment, .web-link {
            animation: fadeIn 0.6s ease-out;
        }
        @media print {
            header, nav, .sidebar, .comments-section, .footer-links, footer {
                display: none;
            }
            main {
                grid-template-columns: 1fr;
            }
            .content-area {
                box-shadow: none;
                padding: 0;
            }
        }