:root {
            --primary-color: #1a5fb4;
            --secondary-color: #e95420;
            --accent-color: #2ec27e;
            --dark-bg: #2d2d2d;
            --light-bg: #f8f8f8;
            --text-dark: #333333;
            --text-light: #f5f5f5;
            --border-color: #e0e0e0;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-dark);
            background-color: #fff;
            overflow-x: hidden;
        }
        .site-header {
            background: linear-gradient(135deg, var(--dark-bg) 0%, #1a1a1a 100%);
            color: var(--text-light);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            color: var(--text-light);
            text-decoration: none;
            font-size: 1.8rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .logo i {
            color: var(--accent-color);
        }
        .logo span {
            color: var(--secondary-color);
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            color: var(--text-light);
            text-decoration: none;
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .desktop-nav a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--accent-color);
        }
        .hamburger {
            display: none;
            cursor: pointer;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: var(--text-light);
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background-color: var(--dark-bg);
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active {
            display: block;
        }
        .mobile-nav ul {
            list-style: none;
        }
        .mobile-nav li {
            margin-bottom: 0.8rem;
        }
        .mobile-nav a {
            color: var(--text-light);
            text-decoration: none;
            display: block;
            padding: 0.8rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .mobile-nav a:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            max-width: 1280px;
            margin: 1rem auto;
            padding: 0 2rem;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: #666;
        }
        .main-container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        article {
            background-color: #fff;
            border-radius: 8px;
            overflow: hidden;
        }
        .article-header {
            margin-bottom: 2.5rem;
            padding-bottom: 1.5rem;
            border-bottom: 2px solid var(--border-color);
        }
        .article-header h1 {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            gap: 1.5rem;
            color: #666;
            font-size: 0.9rem;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .content-section {
            margin-bottom: 3rem;
        }
        .content-section h2 {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--border-color);
        }
        .content-section h3 {
            font-size: 1.4rem;
            color: var(--secondary-color);
            margin: 1.5rem 0 1rem;
        }
        .content-section p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fff8e1;
            padding: 1.5rem;
            border-left: 4px solid var(--accent-color);
            margin: 1.5rem 0;
            border-radius: 0 4px 4px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background-color: var(--light-bg);
            padding: 1.5rem;
            border-radius: 8px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-5px);
        }
        .stat-card i {
            font-size: 2rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        .stat-card h4 {
            color: var(--secondary-color);
            margin-bottom: 0.5rem;
        }
        .responsive-table {
            width: 100%;
            overflow-x: auto;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            border-radius: 8px;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }
        th {
            background-color: var(--primary-color);
            color: white;
            padding: 1rem;
            text-align: left;
            font-weight: 600;
        }
        td {
            padding: 1rem;
            border-bottom: 1px solid var(--border-color);
        }
        tr:nth-child(even) {
            background-color: var(--light-bg);
        }
        tr:hover {
            background-color: #e3f2fd;
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            margin: 2rem auto;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .article-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: var(--transition);
        }
        .article-image img:hover {
            transform: scale(1.02);
        }
        .image-caption {
            padding: 1rem;
            background-color: var(--light-bg);
            font-style: italic;
            color: #666;
            text-align: center;
        }
        .sidebar {
            background-color: var(--light-bg);
            padding: 1.5rem;
            border-radius: 8px;
            height: fit-content;
            position: sticky;
            top: 100px;
        }
        .widget {
            margin-bottom: 2rem;
        }
        .widget h3 {
            color: var(--primary-color);
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--border-color);
            font-size: 1.3rem;
        }
        .search-form {
            display: flex;
            margin-bottom: 1rem;
        }
        .search-form input {
            flex: 1;
            padding: 0.8rem;
            border: 1px solid var(--border-color);
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 1.2rem;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #0d4a9c;
        }
        .interactive-section {
            background-color: #fff;
            padding: 2rem;
            border-radius: 8px;
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-group label {
            font-weight: 600;
            color: var(--text-dark);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 0.8rem;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            font-family: inherit;
            font-size: 1rem;
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            font-size: 1.5rem;
            color: #ffc107;
            cursor: pointer;
        }
        .star-rating i {
            transition: var(--transition);
        }
        .star-rating i:hover {
            transform: scale(1.2);
        }
        .submit-btn {
            background-color: var(--accent-color);
            color: white;
            border: none;
            padding: 1rem 1.5rem;
            border-radius: 4px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            align-self: flex-start;
        }
        .submit-btn:hover {
            background-color: #26a56a;
        }
        .site-footer {
            background-color: var(--dark-bg);
            color: var(--text-light);
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h3 {
            color: var(--accent-color);
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 1rem;
            border-radius: 4px;
            margin: 1rem 0;
        }
        friend-link a {
            color: var(--accent-color);
            font-weight: 600;
            text-decoration: none;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 1024px) {
            .main-container {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                padding: 0 1rem;
            }
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .breadcrumb, .main-container {
                padding: 1rem;
            }
            .article-header h1 {
                font-size: 2rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .footer-container {
                grid-template-columns: 1fr;
                text-align: center;
            }
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .content-section {
            animation: fadeInUp 0.6s ease-out;
        }