* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #2c3e50;
            --secondary-color: #3498db;
            --accent-color: #e74c3c;
            --light-color: #ecf0f1;
            --dark-color: #2c3e50;
            --text-color: #333;
            --text-light: #666;
            --border-color: #ddd;
            --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: var(--text-color);
            background-color: #f9f9f9;
        }
        a {
            color: var(--secondary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-color);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--primary-color);
            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;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 700;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            color: var(--light-color);
        }
        .my-logo i {
            color: var(--accent-color);
        }
        .desktop-nav {
            display: flex;
            gap: 30px;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
        }
        .desktop-nav a {
            color: white;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: var(--border-radius);
        }
        .desktop-nav a:hover {
            background-color: rgba(255,255,255,0.1);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
        }
        .mobile-nav {
            display: none;
            background-color: var(--dark-color);
            padding: 20px;
            flex-direction: column;
            gap: 15px;
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: white;
            padding: 12px 15px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .breadcrumb {
            background-color: var(--light-color);
            padding: 15px 0;
            font-size: 0.9rem;
        }
        .breadcrumb .container {
            display: flex;
            gap: 10px;
            align-items: center;
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--secondary-color);
        }
        .breadcrumb span {
            color: var(--text-light);
        }
        .search-section {
            background: linear-gradient(135deg, var(--secondary-color), #2980b9);
            padding: 40px 0;
            color: white;
            text-align: center;
        }
        .search-container {
            max-width: 800px;
            margin: 0 auto;
        }
        .search-form {
            display: flex;
            margin-top: 20px;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .search-input {
            flex: 1;
            padding: 15px 25px;
            border: none;
            font-size: 1rem;
        }
        .search-btn {
            background-color: var(--accent-color);
            color: white;
            border: none;
            padding: 0 30px;
            cursor: pointer;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: #c0392b;
        }
        main {
            padding: 40px 0;
            background-color: white;
        }
        .article-header {
            text-align: center;
            margin-bottom: 40px;
            padding-bottom: 30px;
            border-bottom: 1px solid var(--border-color);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            line-height: 1.2;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 20px;
            color: var(--text-light);
            font-size: 0.9rem;
            margin-top: 15px;
        }
        .article-meta i {
            margin-right: 5px;
        }
        section {
            margin-bottom: 50px;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--secondary-color);
        }
        h3 {
            font-size: 1.5rem;
            color: var(--dark-color);
            margin: 25px 0 15px;
        }
        h4 {
            font-size: 1.2rem;
            color: var(--dark-color);
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.05rem;
            line-height: 1.8;
        }
        .highlight {
            background-color: #f8f9fa;
            border-left: 4px solid var(--secondary-color);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat-item {
            background-color: var(--light-color);
            padding: 25px;
            border-radius: var(--border-radius);
            text-align: center;
            box-shadow: var(--shadow);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--secondary-color);
            margin-bottom: 10px;
        }
        .feature-image {
            margin: 30px 0;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            margin-top: 10px;
            font-size: 0.9rem;
        }
        .interactive-section {
            background-color: #f0f7ff;
            padding: 40px;
            border-radius: var(--border-radius);
            margin: 40px 0;
        }
        .rating-system {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 20px;
            margin: 30px 0;
        }
        .stars {
            display: flex;
            gap: 10px;
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
        }
        .stars i {
            transition: var(--transition);
        }
        .stars i:hover,
        .stars i.active {
            color: #f39c12;
        }
        .comment-form {
            display: flex;
            flex-direction: column;
            gap: 20px;
            max-width: 800px;
            margin: 40px auto;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .form-group label {
            font-weight: 600;
            color: var(--dark-color);
        }
        .form-control {
            padding: 12px 15px;
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--secondary-color);
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .btn {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 14px 30px;
            border-radius: var(--border-radius);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            align-self: flex-start;
        }
        .btn:hover {
            background-color: #2980b9;
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }
        .btn-accent {
            background-color: var(--accent-color);
        }
        .btn-accent:hover {
            background-color: #c0392b;
        }
        .related-links {
            background-color: #f8f9fa;
            padding: 30px;
            border-radius: var(--border-radius);
            margin: 40px 0;
        }
        .links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            margin-top: 20px;
        }
        .links-grid a {
            display: block;
            padding: 12px 15px;
            background-color: white;
            border-radius: var(--border-radius);
            border-left: 4px solid var(--secondary-color);
            transition: var(--transition);
        }
        .links-grid a:hover {
            transform: translateX(5px);
            box-shadow: var(--shadow);
        }
        footer {
            background-color: var(--primary-color);
            color: white;
            padding: 50px 0 20px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: white;
            border-bottom: 2px solid var(--secondary-color);
            padding-bottom: 10px;
            margin-bottom: 20px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: #ddd;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin: 10px 0;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        friend-link a {
            color: #ddd;
        }
        friend-link a:hover {
            color: white;
        }
        .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) {
            .container {
                padding: 0 15px;
            }
            h1 {
                font-size: 2.3rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                padding: 12px 0;
            }
            .search-form {
                flex-direction: column;
                border-radius: var(--border-radius);
            }
            .search-input,
            .search-btn {
                width: 100%;
                border-radius: 0;
            }
            .stats-box {
                grid-template-columns: 1fr;
            }
            .interactive-section {
                padding: 25px;
            }
        }
        @media (max-width: 576px) {
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .article-meta {
                flex-direction: column;
                align-items: center;
                gap: 10px;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.8s ease-out;
        }
        .text-center { text-align: center; }
        .text-bold { font-weight: 700; }
        .text-accent { color: var(--accent-color); }
        .text-secondary { color: var(--secondary-color); }
        .mb-20 { margin-bottom: 20px; }
        .mb-30 { margin-bottom: 30px; }
        .mt-20 { margin-top: 20px; }
        .mt-30 { margin-top: 30px; }
        .py-20 { padding-top: 20px; padding-bottom: 20px; }
        .px-20 { padding-left: 20px; padding-right: 20px; }