* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #4285f4;
            --secondary: #34a853;
            --accent: #ea4335;
            --dark: #202124;
            --light: #f8f9fa;
            --gray: #5f6368;
            --border: #dadce0;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background-color: #fff;
            overflow-x: hidden;
        }
        h1, h2, h3, h4 {
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 1rem;
            color: var(--dark);
        }
        h1 {
            font-size: 2.8rem;
            margin-top: 1.5rem;
            border-bottom: 3px solid var(--primary);
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2.2rem;
            color: var(--primary);
            margin-top: 3rem;
            padding-left: 0.5rem;
            border-left: 5px solid var(--secondary);
        }
        h3 {
            font-size: 1.8rem;
            color: var(--gray);
            margin-top: 2.5rem;
        }
        h4 {
            font-size: 1.4rem;
            color: var(--dark);
            margin-top: 2rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.5px;
        }
        .my-logo i {
            color: var(--accent);
        }
        .my-logo span {
            background: linear-gradient(45deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .main-nav {
            display: flex;
            gap: 30px;
        }
        .main-nav a {
            text-decoration: none;
            color: var(--gray);
            font-weight: 600;
            font-size: 1.1rem;
            transition: var(--transition);
            position: relative;
            padding: 5px 0;
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary);
            transition: var(--transition);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            color: var(--dark);
            cursor: pointer;
            background: none;
            border: none;
        }
        .breadcrumb {
            background-color: var(--light);
            padding: 15px 0;
            margin-bottom: 30px;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            margin-right: 10px;
        }
        .breadcrumb a {
            color: var(--gray);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
            text-decoration: underline;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 10px;
            color: var(--gray);
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 30px 0;
        }
        article {
            background-color: white;
            padding: 30px;
            border-radius: 12px;
            box-shadow: var(--shadow);
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            color: var(--gray);
            font-size: 0.9rem;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid var(--border);
        }
        .last-updated {
            color: var(--accent);
            font-weight: 600;
        }
        .intro {
            font-size: 1.2rem;
            background: linear-gradient(to right, var(--light), #e8f0fe);
            padding: 25px;
            border-radius: 10px;
            margin-bottom: 2.5rem;
            border-left: 5px solid var(--primary);
        }
        .highlight {
            background-color: #f0f7ff;
            padding: 20px;
            border-radius: 8px;
            margin: 25px 0;
            border-left: 4px solid var(--secondary);
        }
        .highlight strong {
            color: var(--primary);
        }
        em {
            color: var(--accent);
            font-style: italic;
        }
        .keyword-link {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted var(--primary);
            transition: var(--transition);
        }
        .keyword-link:hover {
            color: var(--accent);
            border-bottom-style: solid;
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 10px;
            margin: 30px auto;
            display: block;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
            transition: transform 0.5s ease;
        }
        .article-image:hover {
            transform: scale(1.01);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: -20px;
            margin-bottom: 30px;
            font-size: 0.95rem;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.8rem;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 30px 0;
            box-shadow: var(--shadow);
            border-radius: 10px;
            overflow: hidden;
        }
        .comparison-table th {
            background-color: var(--primary);
            color: white;
            padding: 18px;
            text-align: left;
            font-weight: 600;
        }
        .comparison-table td {
            padding: 15px;
            border-bottom: 1px solid var(--border);
        }
        .comparison-table tr:nth-child(even) {
            background-color: var(--light);
        }
        .comparison-table tr:hover {
            background-color: #e8f0fe;
        }
        aside {
            position: sticky;
            top: 120px;
            height: fit-content;
        }
        .sidebar-widget {
            background-color: white;
            padding: 25px;
            border-radius: 12px;
            box-shadow: var(--shadow);
            margin-bottom: 30px;
        }
        .widget-title {
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border);
        }
        .search-box {
            position: relative;
            margin-bottom: 15px;
        }
        .search-box input {
            width: 100%;
            padding: 15px 50px 15px 20px;
            border: 2px solid var(--border);
            border-radius: 50px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-box input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(66, 133, 244, 0.2);
        }
        .search-box button {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 50%;
            width: 40px;
            height: 40px;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: var(--secondary);
        }
        .rating-widget {
            text-align: center;
        }
        .rating-stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 15px 0;
        }
        .rating-stars i {
            font-size: 1.8rem;
            color: #ffc107;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        .rating-count {
            color: var(--gray);
            font-size: 0.9rem;
        }
        .comment-form textarea {
            width: 100%;
            padding: 15px;
            border: 2px solid var(--border);
            border-radius: 10px;
            font-family: inherit;
            font-size: 1rem;
            margin-bottom: 15px;
            resize: vertical;
            min-height: 120px;
            transition: var(--transition);
        }
        .comment-form textarea:focus {
            outline: none;
            border-color: var(--primary);
        }
        .comment-form button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: block;
            width: 100%;
        }
        .comment-form button:hover {
            background-color: var(--secondary);
            transform: translateY(-2px);
        }
        .related-links {
            list-style: none;
            margin-left: 0;
        }
        .related-links li {
            margin-bottom: 12px;
            padding: 12px 15px;
            background-color: var(--light);
            border-radius: 8px;
            transition: var(--transition);
        }
        .related-links li:hover {
            background-color: #e8f0fe;
            transform: translateX(5px);
        }
        .related-links a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-links i {
            color: var(--primary);
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: white;
            font-size: 1.4rem;
            margin-bottom: 20px;
            border-bottom: 2px solid var(--primary);
            padding-bottom: 10px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #ddd;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.1);
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 15px;
        }
        friend-link a {
            color: #ddd;
            text-decoration: none;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        friend-link a:hover {
            color: var(--secondary);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
                margin-top: 40px;
            }
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 15px;
                margin-top: 20px;
                padding-top: 20px;
                border-top: 1px solid var(--border);
            }
            .main-nav.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .article-meta {
                flex-direction: column;
                gap: 10px;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 576px) {
            .container {
                padding: 0 15px;
            }
            article {
                padding: 20px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .comparison-table {
                font-size: 0.9rem;
            }
            .comparison-table th, .comparison-table td {
                padding: 10px;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        article, .sidebar-widget {
            animation: fadeIn 0.8s ease-out;
        }
        @media print {
            header, aside, footer, .breadcrumb, .article-meta, .search-box, .rating-widget, .comment-form {
                display: none;
            }
            body {
                font-size: 12pt;
                line-height: 1.5;
            }
            .container {
                max-width: 100%;
                padding: 0;
            }
            article {
                box-shadow: none;
                padding: 0;
            }
            a {
                color: black;
                text-decoration: underline;
            }
        }