* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #1a365d;
            --secondary-color: #e53e3e;
            --accent-color: #38a169;
            --text-color: #2d3748;
            --light-bg: #f7fafc;
            --border-color: #e2e8f0;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: #fff;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-color) 0%, #2d3748 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--secondary-color);
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-link {
            color: white;
            text-decoration: none;
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-link:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--primary-color);
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active {
            display: block;
        }
        .mobile-nav .nav-link {
            display: block;
            padding: 0.8rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: var(--light-bg);
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin-left: 0.5rem;
            color: #718096;
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        .article-header {
            margin-bottom: 2rem;
            border-bottom: 2px solid var(--border-color);
            padding-bottom: 1rem;
        }
        .article-header h1 {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .meta-info {
            display: flex;
            gap: 1.5rem;
            color: #718096;
            font-size: 0.9rem;
        }
        .meta-info i {
            margin-right: 0.5rem;
        }
        .content-section {
            margin-bottom: 3rem;
        }
        .content-section h2 {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--border-color);
        }
        .content-section h3 {
            font-size: 1.4rem;
            color: var(--primary-color);
            margin: 1.5rem 0 1rem;
        }
        .content-section p {
            margin-bottom: 1.2rem;
            line-height: 1.7;
        }
        .highlight-box {
            background: linear-gradient(to right, var(--light-bg), #fff);
            border-left: 4px solid var(--accent-color);
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .stat-card {
            background: var(--light-bg);
            padding: 1.5rem;
            border-radius: 8px;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        .stat-card .number {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary-color);
            display: block;
        }
        .stat-card .label {
            color: #718096;
            font-size: 0.9rem;
            margin-top: 0.5rem;
        }
        .article-image {
            width: 100%;
            height: auto;
            border-radius: 8px;
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .image-caption {
            text-align: center;
            color: #718096;
            font-style: italic;
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .content-link {
            color: var(--primary-color);
            text-decoration: none;
            border-bottom: 1px dashed var(--primary-color);
            transition: var(--transition);
        }
        .content-link:hover {
            color: var(--secondary-color);
            border-bottom-style: solid;
        }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: var(--shadow);
            position: sticky;
            top: 120px;
        }
        .sidebar-section {
            margin-bottom: 2rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid var(--border-color);
        }
        .sidebar-section:last-child {
            border-bottom: none;
            margin-bottom: 0;
        }
        .sidebar h3 {
            color: var(--primary-color);
            margin-bottom: 1rem;
            font-size: 1.2rem;
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
        }
        .search-input {
            flex: 1;
            padding: 0.8rem;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            font-size: 1rem;
        }
        .search-btn {
            background: var(--primary-color);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 4px;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-btn:hover {
            background: var(--secondary-color);
            transform: translateY(-2px);
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 0.8rem;
        }
        .related-links a {
            color: var(--text-color);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .related-links a:hover {
            background: var(--light-bg);
            color: var(--primary-color);
            padding-left: 1rem;
        }
        .related-links i {
            color: var(--accent-color);
        }
        .interactive-section {
            background: var(--light-bg);
            padding: 2rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .rating-widget {
            text-align: center;
            padding: 2rem;
            background: white;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: #e2e8f0;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #f6ad55;
        }
        .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-input,
        .form-textarea {
            padding: 0.8rem;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-input:focus,
        .form-textarea:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
        }
        .form-textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background: var(--accent-color);
            color: white;
            border: none;
            padding: 1rem;
            border-radius: 4px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background: #2f855a;
            transform: translateY(-2px);
        }
        .site-footer {
            background: var(--primary-color);
            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 h4 {
            font-size: 1.2rem;
            margin-bottom: 1rem;
            color: white;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.5rem;
        }
        .footer-links a {
            color: #cbd5e0;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin: 1rem 0;
            padding: 1rem;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 4px;
        }
        friend-link a {
            color: white;
            text-decoration: none;
            font-weight: 500;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #cbd5e0;
            font-size: 0.9rem;
        }
        .text-bold {
            font-weight: 700;
            color: var(--primary-color);
        }
        .text-highlight {
            background: linear-gradient(120deg, #f6d365 0%, #fda085 100%);
            padding: 0.2rem 0.5rem;
            border-radius: 3px;
        }
        .emoji {
            font-size: 1.2em;
            margin: 0 0.2rem;
        }
        @media (max-width: 768px) {
            .article-header h1 {
                font-size: 2rem;
            }
            .main-content {
                padding: 1rem 0;
            }
            .article-content {
                padding: 1rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .content-section {
            animation: fadeIn 0.5s ease-out;
        }
        ::-webkit-scrollbar {
            width: 10px;
        }
        ::-webkit-scrollbar-track {
            background: var(--light-bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary-color);
            border-radius: 5px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--secondary-color);
        }