* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #1a73e8;
            --secondary-color: #34a853;
            --accent-color: #ea4335;
            --dark-color: #202124;
            --light-color: #f8f9fa;
            --gray-color: #5f6368;
            --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: 1.6;
            color: #333;
            background-color: #f5f7fa;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: var(--primary-color);
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-color);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul {
            list-style: none;
        }
        .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-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo a {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--accent-color);
        }
        .desktop-nav ul {
            display: flex;
            gap: 25px;
        }
        .desktop-nav a {
            color: var(--dark-color);
            font-weight: 600;
            padding: 8px 0;
            position: relative;
        }
        .desktop-nav a:hover {
            color: var(--primary-color);
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--primary-color);
            transition: var(--transition);
        }
        .desktop-nav a:hover::after {
            width: 100%;
        }
        .mobile-nav-toggle {
            display: none;
            font-size: 24px;
            background: none;
            border: none;
            color: var(--dark-color);
            cursor: pointer;
        }
        .mobile-nav {
            position: fixed;
            top: 0;
            right: -100%;
            width: 80%;
            max-width: 400px;
            height: 100vh;
            background-color: white;
            box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
            padding: 30px 20px;
            z-index: 1001;
            transition: var(--transition);
            overflow-y: auto;
        }
        .mobile-nav.active {
            right: 0;
        }
        .mobile-nav-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
        }
        .mobile-nav-close {
            background: none;
            border: none;
            font-size: 24px;
            color: var(--dark-color);
            cursor: pointer;
        }
        .mobile-nav ul {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .mobile-nav a {
            display: block;
            padding: 12px 15px;
            color: var(--dark-color);
            font-weight: 600;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .mobile-nav a:hover {
            background-color: #f0f7ff;
            color: var(--primary-color);
        }
        .overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 1000;
        }
        .overlay.active {
            display: block;
        }
        .breadcrumb {
            background-color: #f1f3f4;
            padding: 12px 0;
            margin-bottom: 30px;
        }
        .breadcrumb .container {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--gray-color);
        }
        .breadcrumb a:hover {
            color: var(--primary-color);
        }
        .breadcrumb i {
            font-size: 12px;
            color: var(--gray-color);
        }
        .search-section {
            background-color: white;
            padding: 30px 0;
            margin-bottom: 40px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
        }
        .search-form h2 {
            text-align: center;
            margin-bottom: 20px;
            color: var(--dark-color);
        }
        .search-box {
            display: flex;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            border-radius: 50px;
            overflow: hidden;
        }
        .search-box input {
            flex: 1;
            padding: 15px 25px;
            border: none;
            font-size: 16px;
            outline: none;
        }
        .search-box button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 30px;
            cursor: pointer;
            font-size: 18px;
            transition: var(--transition);
        }
        .search-box button:hover {
            background-color: #0d62d9;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin-bottom: 50px;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        article {
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            padding: 40px;
            overflow: hidden;
        }
        .article-header {
            margin-bottom: 40px;
            border-bottom: 2px solid #f0f0f0;
            padding-bottom: 25px;
        }
        .article-header h1 {
            font-size: 36px;
            line-height: 1.3;
            color: var(--dark-color);
            margin-bottom: 15px;
        }
        .article-meta {
            display: flex;
            gap: 20px;
            color: var(--gray-color);
            font-size: 14px;
            margin-bottom: 20px;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .featured-image {
            margin-bottom: 30px;
            border-radius: var(--border-radius);
            overflow: hidden;
            position: relative;
        }
        .featured-image img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .featured-image:hover img {
            transform: scale(1.03);
        }
        .image-caption {
            background-color: rgba(0, 0, 0, 0.7);
            color: white;
            padding: 10px 15px;
            font-size: 14px;
            position: absolute;
            bottom: 0;
            width: 100%;
        }
        .article-content h2 {
            font-size: 28px;
            margin: 40px 0 20px;
            color: var(--dark-color);
            padding-bottom: 10px;
            border-bottom: 2px solid #f0f0f0;
        }
        .article-content h3 {
            font-size: 22px;
            margin: 30px 0 15px;
            color: var(--dark-color);
        }
        .article-content p {
            margin-bottom: 20px;
            line-height: 1.7;
            text-align: justify;
        }
        .article-content .highlight {
            background-color: #fff9e6;
            border-left: 4px solid #ffc107;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .article-content .stats-box {
            background-color: #f8f9fa;
            border: 1px solid #e9ecef;
            border-radius: var(--border-radius);
            padding: 25px;
            margin: 25px 0;
        }
        .article-content ul {
            list-style-type: disc;
            margin-left: 20px;
            margin-bottom: 20px;
        }
        .article-content li {
            margin-bottom: 10px;
        }
        .internal-link {
            background-color: #f0f7ff;
            padding: 3px 6px;
            border-radius: 4px;
            font-weight: 600;
        }
        .internal-link:hover {
            background-color: #e1f0ff;
        }
        aside {
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            padding: 25px;
            height: fit-content;
            position: sticky;
            top: 100px;
        }
        .sidebar-section {
            margin-bottom: 35px;
        }
        .sidebar-section h3 {
            font-size: 20px;
            margin-bottom: 20px;
            color: var(--dark-color);
            padding-bottom: 10px;
            border-bottom: 2px solid #f0f0f0;
        }
        .sidebar-links li {
            margin-bottom: 12px;
        }
        .sidebar-links a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 15px;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .sidebar-links a:hover {
            background-color: #f0f7ff;
            transform: translateX(5px);
        }
        .sidebar-links i {
            color: var(--primary-color);
        }
        .rating-section {
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            padding: 30px;
            margin-bottom: 50px;
        }
        .rating-form h2 {
            text-align: center;
            margin-bottom: 25px;
            color: var(--dark-color);
        }
        .rating-stars {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-bottom: 25px;
            flex-wrap: wrap;
        }
        .star {
            font-size: 32px;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        .rating-submit {
            text-align: center;
        }
        .rating-submit button {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-submit button:hover {
            background-color: #2e8b47;
            transform: translateY(-3px);
        }
        .comments-section {
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            padding: 30px;
            margin-bottom: 50px;
        }
        .comments-section h2 {
            margin-bottom: 30px;
            color: var(--dark-color);
        }
        .comment-form {
            margin-bottom: 40px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark-color);
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 16px;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
        }
        .comment-submit button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .comment-submit button:hover {
            background-color: #0d62d9;
            transform: translateY(-3px);
        }
        footer {
            background-color: var(--dark-color);
            color: #e8eaed;
            padding: 50px 0 20px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        @media (max-width: 768px) {
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        .footer-section h3 {
            font-size: 20px;
            margin-bottom: 25px;
            color: white;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-section h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background-color: var(--primary-color);
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #bdc1c6;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            transform: translateX(5px);
        }
        friend-link {
            display: block;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #3c4043;
        }
        .friend-link-list {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin-top: 15px;
        }
        .friend-link-list a {
            background-color: #3c4043;
            color: #bdc1c6;
            padding: 8px 15px;
            border-radius: 4px;
            font-size: 14px;
            transition: var(--transition);
        }
        .friend-link-list a:hover {
            background-color: var(--primary-color);
            color: white;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #3c4043;
            font-size: 14px;
            color: #9aa0a6;
        }
        @media (max-width: 768px) {
            .header-container {
                padding: 12px 0;
            }
            .desktop-nav {
                display: none;
            }
            .mobile-nav-toggle {
                display: block;
            }
            .article-header h1 {
                font-size: 28px;
            }
            .article-content h2 {
                font-size: 24px;
            }
            .article-content h3 {
                font-size: 20px;
            }
            article {
                padding: 25px;
            }
            .main-content {
                gap: 30px;
            }
        }
        @media (max-width: 576px) {
            .container {
                padding: 0 15px;
            }
            .article-header h1 {
                font-size: 24px;
            }
            .article-meta {
                flex-direction: column;
                gap: 10px;
            }
            .search-box {
                flex-direction: column;
                border-radius: var(--border-radius);
            }
            .search-box input {
                border-radius: var(--border-radius) var(--border-radius) 0 0;
            }
            .search-box button {
                border-radius: 0 0 var(--border-radius) var(--border-radius);
                padding: 15px;
            }
            .rating-stars {
                gap: 5px;
            }
            .star {
                font-size: 28px;
            }
        }
        @media print {
            header, .search-section, aside, .rating-section, .comments-section, footer {
                display: none;
            }
            body {
                background-color: white;
                color: black;
            }
            article {
                box-shadow: none;
                padding: 0;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.8s ease-out;
        }