* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #1e3a8a;
            --secondary-color: #dc2626;
            --accent-color: #f59e0b;
            --text-dark: #1f2937;
            --text-light: #6b7280;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --border-radius: 8px;
            --max-width: 1200px;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.6;
            color: var(--text-dark);
            background-color: var(--bg-light);
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: var(--bg-white);
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
            border-bottom: 1px solid #e5e7eb;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--secondary-color);
        }
        .my-logo:hover {
            color: var(--secondary-color);
        }
        .search-container {
            display: flex;
            max-width: 400px;
            width: 100%;
        }
        .search-form {
            display: flex;
            width: 100%;
        }
        .search-input {
            flex: 1;
            padding: 0.75rem 1rem;
            border: 2px solid #e5e7eb;
            border-right: none;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-input:focus {
            outline: none;
            border-color: var(--primary-color);
        }
        .search-button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-button:hover {
            background-color: var(--secondary-color);
        }
        .main-nav {
            padding: 1rem 0;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 2rem;
            justify-content: center;
            flex-wrap: wrap;
        }
        .nav-link {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .nav-link:hover {
            background-color: var(--primary-color);
            color: white;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary-color);
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: var(--bg-white);
            border-bottom: 1px solid #e5e7eb;
            margin-bottom: 2rem;
        }
        .breadcrumb-list {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .breadcrumb-link {
            text-decoration: none;
            color: var(--text-light);
            transition: var(--transition);
        }
        .breadcrumb-link:hover {
            color: var(--primary-color);
        }
        .breadcrumb-separator {
            color: var(--text-light);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        .article-content {
            background-color: var(--bg-white);
            padding: 2.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background-color: var(--bg-white);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .widget-title {
            font-size: 1.25rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent-color);
        }
        h1 {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-color);
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e5e7eb;
        }
        h3 {
            font-size: 1.5rem;
            color: var(--secondary-color);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.25rem;
            color: var(--text-dark);
            margin: 1.5rem 0 0.75rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.25rem;
            font-weight: 500;
            color: var(--text-dark);
            margin-bottom: 2rem;
            padding: 1.5rem;
            background-color: #f0f9ff;
            border-left: 4px solid var(--primary-color);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .highlight {
            background-color: #fef3c7;
            padding: 0.25rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .stats-box {
            background-color: #f8fafc;
            border: 1px solid #e5e7eb;
            border-radius: var(--border-radius);
            padding: 1.5rem;
            margin: 2rem 0;
        }
        .stats-title {
            font-size: 1.25rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
        }
        .stat-item {
            text-align: center;
            padding: 1rem;
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }
        .stat-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--secondary-color);
            display: block;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-light);
        }
        .article-image {
            width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .article-image:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .content-link {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted var(--primary-color);
            transition: var(--transition);
        }
        .content-link:hover {
            color: var(--secondary-color);
            border-bottom-style: solid;
        }
        .related-links {
            background-color: #f0f9ff;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
        }
        .related-links h3 {
            margin-top: 0;
        }
        .related-links-list {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1rem;
        }
        .related-link-item {
            padding: 0.75rem;
            background-color: white;
            border-radius: calc(var(--border-radius) - 2px);
            transition: var(--transition);
        }
        .related-link-item:hover {
            transform: translateX(5px);
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
        }
        .user-interaction {
            background-color: var(--bg-white);
            border: 2px solid #e5e7eb;
            border-radius: var(--border-radius);
            padding: 2rem;
            margin: 3rem 0;
        }
        .interaction-title {
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .rating-container {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1.5rem;
            flex-wrap: wrap;
        }
        .rating-stars {
            display: flex;
            gap: 0.25rem;
        }
        .rating-star {
            font-size: 1.5rem;
            color: #d1d5db;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-star:hover,
        .rating-star.active {
            color: var(--accent-color);
        }
        .comment-form,
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-input,
        .form-textarea {
            padding: 0.75rem;
            border: 1px solid #d1d5db;
            border-radius: var(--border-radius);
            font-family: inherit;
            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(30, 58, 138, 0.1);
        }
        .form-textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0.75rem 1.5rem;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            align-self: flex-start;
        }
        .submit-button:hover {
            background-color: var(--secondary-color);
            transform: translateY(-2px);
        }
        .site-footer {
            background-color: 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 h3 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.25rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-link {
            color: #d1d5db;
            text-decoration: none;
            padding: 0.5rem 0;
            display: block;
            transition: var(--transition);
        }
        .footer-link:hover {
            color: white;
            padding-left: 0.5rem;
        }
        friend-link {
            display: block;
            padding: 1rem;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: var(--border-radius);
            margin-bottom: 1rem;
        }
        friend-link a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        friend-link a:hover {
            color: var(--accent-color);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #d1d5db;
            font-size: 0.9rem;
        }
        .update-time {
            color: var(--accent-color);
            font-weight: 600;
            margin-top: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        @media (max-width: 1024px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            .sidebar {
                grid-column: 1;
                grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
                grid-auto-flow: dense;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                gap: 1rem;
            }
            .search-container {
                max-width: 100%;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 1.5rem;
                right: 20px;
            }
            .main-nav {
                display: none;
                padding: 1rem 0 0;
            }
            .main-nav.active {
                display: block;
            }
            .nav-list {
                flex-direction: column;
                gap: 0.5rem;
            }
            .nav-link {
                padding: 0.75rem;
                justify-content: center;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.75rem;
            }
            h3 {
                font-size: 1.35rem;
            }
            .article-content {
                padding: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 15px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .related-links-list {
                grid-template-columns: 1fr;
            }
            .rating-container {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.6s ease-out;
        }
        .pulse {
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.4); }
            70% { box-shadow: 0 0 0 10px rgba(220, 38, 38, 0); }
            100% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0); }
        }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .flex { display: flex; }
        .flex-col { flex-direction: column; }
        .items-center { align-items: center; }
        .justify-between { justify-content: space-between; }
        .gap-1 { gap: 1rem; }
        .gap-2 { gap: 2rem; }