* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #3498db;
            --primary-dark: #2980b9;
            --secondary: #2ecc71;
            --accent: #e74c3c;
            --dark: #2c3e50;
            --light: #ecf0f1;
            --gray: #95a5a6;
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f9f9f9;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: var(--primary);
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background-color: var(--primary);
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .section-padding {
            padding: 60px 0;
        }
        header {
            background-color: white;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-icon {
            color: var(--accent);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            font-weight: 600;
            color: var(--dark);
            padding: 8px 0;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--primary);
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .search-box {
            display: flex;
            align-items: center;
            background-color: #f1f5f9;
            border-radius: 30px;
            padding: 8px 20px;
            width: 300px;
        }
        .search-box input {
            flex-grow: 1;
            border: none;
            background: transparent;
            padding: 8px;
            outline: none;
            font-size: 1rem;
        }
        .search-box button {
            background: none;
            border: none;
            color: var(--gray);
            cursor: pointer;
            font-size: 1.1rem;
        }
        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
        }
        .breadcrumb {
            background-color: #f1f5f9;
            padding: 15px 20px;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--dark);
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(135deg, #1a2980, #26d0ce);
            color: white;
            padding: 80px 0;
            text-align: center;
        }
        .hero h1 {
            font-size: 2.8rem;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 30px;
            opacity: 0.9;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        .article-content {
            background-color: white;
            border-radius: 10px;
            padding: 40px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 1px solid #eee;
            flex-wrap: wrap;
            gap: 15px;
        }
        .author-info {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        .author-avatar {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            object-fit: cover;
        }
        .publish-date {
            color: var(--gray);
        }
        .article-content h2 {
            color: var(--dark);
            margin: 30px 0 15px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary);
        }
        .article-content h3 {
            color: var(--dark);
            margin: 25px 0 10px;
        }
        .article-content p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .highlight-box {
            background-color: #e8f4fc;
            border-left: 5px solid var(--primary);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .article-image {
            margin: 30px 0;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            padding: 10px;
            background-color: #f9f9f9;
        }
        .related-links {
            background-color: #f8f9fa;
            padding: 20px;
            border-radius: 10px;
            margin: 30px 0;
        }
        .related-links h3 {
            margin-top: 0;
        }
        .related-links ul {
            list-style: none;
            padding-left: 0;
        }
        .related-links li {
            margin-bottom: 10px;
            padding-left: 20px;
            position: relative;
        }
        .related-links li:before {
            content: '→';
            position: absolute;
            left: 0;
            color: var(--primary);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background-color: white;
            border-radius: 10px;
            padding: 25px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .sidebar-widget h3 {
            color: var(--dark);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--secondary);
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 2rem;
            color: #ffc107;
            margin: 15px 0;
        }
        .stars i {
            cursor: pointer;
            transition: var(--transition);
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        .comment-form textarea,
        .comment-form input {
            width: 100%;
            padding: 12px;
            margin-bottom: 15px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-family: inherit;
        }
        .comment-form button {
            width: 100%;
        }
        .popular-articles ul {
            list-style: none;
        }
        .popular-articles li {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px solid #eee;
        }
        .popular-articles li:last-child {
            border-bottom: none;
        }
        .popular-articles a {
            font-weight: 600;
            display: block;
            margin-bottom: 5px;
        }
        .footer-links {
            background-color: var(--dark);
            padding: 40px 0;
        }
        .footer-links .container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }
        .web-link {
            background-color: rgba(255, 255, 255, 0.05);
            padding: 20px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateY(-5px);
        }
        .web-link a {
            color: white;
            font-weight: 600;
        }
        footer {
            background-color: #1a252f;
            color: #bdc3c7;
            padding: 40px 0 20px;
            text-align: center;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: white;
            margin-bottom: 20px;
            display: inline-block;
        }
        .copyright {
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
        }
        @media (max-width: 1024px) {
            .main-content {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .hero h1 {
                font-size: 2.4rem;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .mobile-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                order: 3;
                margin-top: 20px;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 15px;
            }
            .search-box {
                width: 100%;
                margin-top: 15px;
                order: 2;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .article-content {
                padding: 25px;
            }
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 480px) {
            .hero {
                padding: 60px 0;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .section-padding {
                padding: 40px 0;
            }
            .btn {
                padding: 10px 20px;
            }
        }
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }
        .emphasis {
            animation: pulse 2s infinite;
            background-color: #fffacd;
            padding: 5px 10px;
            border-radius: 5px;
            font-weight: bold;
        }