* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #1a237e;
            --secondary-color: #ff5722;
            --accent-color: #4caf50;
            --dark-color: #121212;
            --light-color: #f5f5f5;
            --text-color: #333;
            --text-light: #666;
            --border-color: #ddd;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --container-width: 1200px;
            --border-radius: 8px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-color);
            background-color: #fff;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .main-header {
            background-color: var(--dark-color);
            color: white;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--secondary-color);
        }
        .logo span {
            color: var(--secondary-color);
        }
        .nav-desktop {
            display: flex;
            gap: 30px;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            font-weight: 600;
            padding: 8px 0;
            position: relative;
        }
        .nav-desktop a:hover {
            color: var(--secondary-color);
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--secondary-color);
            transition: var(--transition);
        }
        .nav-desktop a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
            padding: 5px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: white;
            border-radius: 2px;
            transition: var(--transition);
        }
        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
        }
        .mobile-nav {
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background-color: var(--dark-color);
            padding: 20px;
            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 {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .mobile-nav a {
            display: block;
            padding: 12px 15px;
            border-radius: var(--border-radius);
            font-weight: 600;
        }
        .mobile-nav a:hover {
            background-color: rgba(255, 87, 34, 0.1);
            color: var(--secondary-color);
        }
        .breadcrumb {
            background-color: #f8f9fa;
            padding: 15px 0;
            margin-bottom: 30px;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.9rem;
        }
        .breadcrumb-list li:not(:last-child)::after {
            content: '>';
            margin-left: 10px;
            color: var(--text-light);
        }
        .breadcrumb-list a:hover {
            color: var(--secondary-color);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-header {
            margin-bottom: 40px;
        }
        .article-header h1 {
            font-size: 2.5rem;
            line-height: 1.2;
            color: var(--primary-color);
            margin-bottom: 15px;
        }
        @media (max-width: 768px) {
            .article-header h1 {
                font-size: 2rem;
            }
        }
        .article-meta {
            display: flex;
            gap: 20px;
            color: var(--text-light);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }
        .article-meta i {
            margin-right: 5px;
        }
        .featured-image {
            margin: 30px 0;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-image img {
            width: 100%;
            height: auto;
            transition: var(--transition);
        }
        .featured-image:hover img {
            transform: scale(1.02);
        }
        .article-content {
            font-size: 1.1rem;
            line-height: 1.8;
        }
        .article-content section {
            margin-bottom: 50px;
        }
        .article-content h2 {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--secondary-color);
        }
        .article-content h3 {
            font-size: 1.5rem;
            color: var(--dark-color);
            margin: 30px 0 15px;
        }
        .article-content p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .article-content strong {
            color: var(--secondary-color);
            font-weight: 700;
        }
        .highlight-box {
            background-color: #e8f4fd;
            border-left: 4px solid var(--primary-color);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .tip-box {
            background-color: #f0f7ff;
            border: 1px solid #cce5ff;
            padding: 20px;
            border-radius: var(--border-radius);
            margin: 25px 0;
        }
        .tip-box h4 {
            color: var(--primary-color);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .warning-box {
            background-color: #fff3cd;
            border: 1px solid #ffecb5;
            padding: 20px;
            border-radius: var(--border-radius);
            margin: 25px 0;
        }
        .warning-box h4 {
            color: #856404;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .feature-card {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 20px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }
        .feature-card i {
            font-size: 2rem;
            color: var(--accent-color);
            margin-bottom: 15px;
        }
        .feature-card h4 {
            margin-bottom: 10px;
            color: var(--primary-color);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        @media (max-width: 992px) {
            .sidebar {
                margin-top: 40px;
            }
        }
        .sidebar-widget {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 25px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-color);
        }
        .sidebar-widget h3 {
            color: var(--primary-color);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--secondary-color);
            font-size: 1.3rem;
        }
        .search-form {
            display: flex;
            margin-top: 10px;
        }
        .search-input {
            flex-grow: 1;
            padding: 12px 15px;
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
            outline: none;
        }
        .search-input:focus {
            border-color: var(--primary-color);
        }
        .search-btn {
            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-btn:hover {
            background-color: var(--secondary-color);
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 15px 0;
            font-size: 1.8rem;
            color: #ffc107;
        }
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-top: 20px;
        }
        .rating-form select,
        .rating-form textarea {
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
        }
        .rating-form textarea {
            resize: vertical;
            min-height: 100px;
        }
        .submit-btn {
            background-color: var(--accent-color);
            color: white;
            border: none;
            padding: 12px;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background-color: #3d8b40;
        }
        .comments-section {
            margin: 50px 0;
        }
        .comments-section h2 {
            color: var(--primary-color);
            margin-bottom: 30px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--secondary-color);
        }
        .comment-form {
            background-color: white;
            padding: 25px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin-bottom: 40px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
        }
        .form-group textarea {
            resize: vertical;
            min-height: 150px;
        }
        .footer-links {
            background-color: #f8f9fa;
            padding: 50px 0 30px;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 20px;
        }
        .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 {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .web-link a {
            color: var(--primary-color);
            font-weight: 600;
            display: block;
        }
        .web-link a:hover {
            color: var(--secondary-color);
        }
        .main-footer {
            background-color: var(--dark-color);
            color: white;
            padding: 40px 0 20px;
        }
        .footer-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .footer-logo span {
            color: var(--secondary-color);
        }
        .copyright {
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            width: 100%;
            color: #aaa;
            font-size: 0.9rem;
        }
        .text-center {
            text-align: center;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .section-divider {
            height: 2px;
            background: linear-gradient(to right, transparent, var(--secondary-color), transparent);
            margin: 50px 0;
        }
        @media (max-width: 768px) {
            .article-header h1 {
                font-size: 1.8rem;
            }
            .article-content h2 {
                font-size: 1.5rem;
            }
            .article-content h3 {
                font-size: 1.3rem;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .links-container {
                grid-template-columns: 1fr;
            }
        }
        @media print {
            .main-header,
            .sidebar,
            .search-form,
            .rating-widget,
            .footer-links,
            .main-footer {
                display: none;
            }
            .article-content {
                font-size: 12pt;
            }
        }