* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #2C3E50;
            --secondary: #E74C3C;
            --accent: #3498DB;
            --light: #ECF0F1;
            --dark: #1A252F;
            --success: #27AE60;
            --warning: #F39C12;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
        }
        .header {
            background: var(--primary);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo a:hover {
            color: var(--accent);
            transition: var(--transition);
        }
        .logo-icon {
            color: var(--secondary);
            font-size: 2.5rem;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-link {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .nav-link:hover, .nav-link.active {
            background: var(--accent);
            color: white;
            transform: translateY(-2px);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: var(--dark);
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active {
            display: flex;
        }
        .breadcrumb {
            background: var(--light);
            padding: 1rem 0;
            border-bottom: 1px solid #ddd;
        }
        .breadcrumb-list {
            display: flex;
            list-style: none;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .breadcrumb-item {
            color: var(--primary);
            font-size: 0.9rem;
        }
        .breadcrumb-item a {
            color: var(--accent);
            text-decoration: none;
        }
        .breadcrumb-item a:hover {
            text-decoration: underline;
        }
        .breadcrumb-separator {
            margin: 0 0.5rem;
            color: #777;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article {
            background: white;
            border-radius: var(--radius);
            padding: 2.5rem;
            box-shadow: var(--shadow);
        }
        .article-header {
            margin-bottom: 2rem;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 1.5rem;
        }
        .article-title {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            gap: 1rem;
            color: #666;
            font-size: 0.95rem;
        }
        .meta-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .meta-icon {
            color: var(--accent);
        }
        .section {
            margin-bottom: 3rem;
            scroll-margin-top: 2rem;
        }
        .section-title {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed var(--accent);
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .section-icon {
            color: var(--secondary);
        }
        .content-block {
            margin-bottom: 2rem;
        }
        .content-title {
            font-size: 1.4rem;
            color: var(--dark);
            margin-bottom: 1rem;
        }
        .content-text {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .highlight {
            background: linear-gradient(120deg, #a1c4fd80 0%, #c2e9fb80 100%);
            padding: 1.5rem;
            border-left: 4px solid var(--accent);
            border-radius: var(--radius);
            margin: 1.5rem 0;
        }
        .highlight-title {
            font-size: 1.2rem;
            color: var(--primary);
            margin-bottom: 0.8rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: var(--light);
            padding: 1.5rem;
            border-radius: var(--radius);
            text-align: center;
            border-top: 4px solid var(--accent);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        .stat-value {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--secondary);
            margin-bottom: 0.5rem;
        }
        .stat-label {
            color: var(--primary);
            font-weight: 600;
        }
        .featured-image {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: var(--radius);
            margin: 2rem 0;
            border: 3px solid var(--accent);
            box-shadow: var(--shadow);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            border-radius: var(--radius);
            padding: 1.5rem;
            box-shadow: var(--shadow);
        }
        .widget-title {
            font-size: 1.3rem;
            color: var(--primary);
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent);
        }
        .search-form {
            display: flex;
            margin-bottom: 1rem;
        }
        .search-input {
            flex: 1;
            padding: 0.8rem 1rem;
            border: 2px solid #ddd;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-input:focus {
            border-color: var(--accent);
        }
        .search-button {
            background: var(--accent);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-button:hover {
            background: var(--primary);
        }
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .rating-stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            font-size: 1.8rem;
            margin: 0.5rem 0;
        }
        .star {
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--warning);
        }
        .rating-input {
            padding: 0.8rem;
            border: 2px solid #ddd;
            border-radius: var(--radius);
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .rating-input:focus {
            border-color: var(--accent);
        }
        .submit-button {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 1rem;
            border-radius: var(--radius);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .submit-button:hover {
            background: var(--primary);
            transform: translateY(-2px);
        }
        .comments-section {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px solid var(--light);
        }
        .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-bottom: 2rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-input {
            padding: 0.8rem;
            border: 2px solid #ddd;
            border-radius: var(--radius);
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .form-input:focus {
            border-color: var(--accent);
        }
        .comment-list {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .comment-item {
            background: var(--light);
            padding: 1.5rem;
            border-radius: var(--radius);
            border-left: 4px solid var(--accent);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 0.8rem;
        }
        .comment-author {
            font-weight: 600;
            color: var(--primary);
        }
        .comment-date {
            color: #666;
            font-size: 0.9rem;
        }
        .related-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        .related-link {
            display: block;
            background: var(--light);
            padding: 1.2rem;
            border-radius: var(--radius);
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
            border-left: 4px solid var(--success);
        }
        .related-link:hover {
            background: var(--accent);
            color: white;
            transform: translateX(5px);
        }
        .footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            color: var(--accent);
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .footer-links a {
            color: #ddd;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 0.5rem;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.1);
            padding: 1.5rem;
            border-radius: var(--radius);
            margin: 1rem 0;
        }
        .friend-link-title {
            font-size: 1.1rem;
            margin-bottom: 1rem;
            color: var(--accent);
        }
        .friend-link-list {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .friend-link-list a {
            color: white;
            text-decoration: none;
            padding: 0.5rem 1rem;
            background: rgba(255,255,255,0.15);
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .friend-link-list a:hover {
            background: var(--accent);
            transform: translateY(-2px);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        .text-bold {
            font-weight: 700;
            color: var(--primary);
        }
        .text-highlight {
            background: linear-gradient(120deg, #FFD70020 0%, #FFA50020 100%);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            color: var(--dark);
        }
        .emoji {
            font-size: 1.2em;
            margin: 0 0.2rem;
        }
        .tag {
            display: inline-block;
            background: var(--light);
            color: var(--primary);
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.85rem;
            margin: 0.2rem;
            border: 1px solid #ddd;
        }
        .tag:hover {
            background: var(--accent);
            color: white;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .article {
                padding: 1.5rem;
            }
            .article-title {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .related-links {
                grid-template-columns: 1fr;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.6s ease-out;
        }
        @media print {
            .header, .sidebar, .footer, .search-form, .rating-form, .comment-form {
                display: none;
            }
            .main-content {
                grid-template-columns: 1fr;
            }
            body {
                background: white;
                color: black;
            }
            .article {
                box-shadow: none;
                padding: 0;
            }
        }