* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #1a237e;
            --secondary: #c62828;
            --accent: #ffd700;
            --light: #f5f5f5;
            --dark: #121212;
            --text: #333333;
            --text-light: #666666;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --border-radius: 8px;
            --container-width: 1200px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text);
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
            min-height: 100vh;
        }
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(90deg, var(--primary) 0%, #283593 100%);
            color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 2.2rem;
            font-weight: 900;
            text-decoration: none;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 2px;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .my-logo:hover {
            color: white;
            transform: scale(1.05);
        }
        .my-logo i {
            font-size: 2.5rem;
            color: var(--secondary);
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 12px;
            border-radius: var(--border-radius);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a:hover {
            background-color: rgba(255, 255, 255, 0.15);
            color: var(--accent);
        }
        .nav-links a.active {
            background-color: var(--secondary);
            color: white;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
            padding: 10px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: white;
            border-radius: 2px;
            transition: var(--transition);
        }
        .breadcrumb {
            background-color: rgba(255, 255, 255, 0.1);
            padding: 12px 0;
            margin-bottom: 0;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 10px;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .breadcrumb a {
            color: #ddd;
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            color: #aaa;
        }
        main {
            padding: 40px 0;
            background-color: white;
            box-shadow: 0 0 30px rgba(0, 0, 0, 0.05);
            border-radius: var(--border-radius);
            margin: 20px auto;
            overflow: hidden;
        }
        .article-header {
            text-align: center;
            padding: 30px 20px;
            background: linear-gradient(90deg, var(--primary) 0%, #283593 100%);
            color: white;
            border-radius: var(--border-radius) var(--border-radius) 0 0;
            margin-bottom: 40px;
        }
        h1 {
            font-size: 2.8rem;
            margin-bottom: 15px;
            line-height: 1.2;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 20px;
            font-size: 0.95rem;
            opacity: 0.9;
            margin-top: 15px;
        }
        .content-section {
            padding: 0 30px 40px;
            border-bottom: 1px solid #eee;
            margin-bottom: 40px;
        }
        .content-section:last-of-type {
            border-bottom: none;
        }
        h2 {
            font-size: 2.2rem;
            color: var(--primary);
            margin: 30px 0 20px;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--accent);
        }
        h3 {
            font-size: 1.8rem;
            color: var(--secondary);
            margin: 25px 0 15px;
        }
        h4 {
            font-size: 1.5rem;
            color: #444;
            margin: 20px 0 12px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            line-height: 1.7;
            text-align: justify;
        }
        .highlight {
            background-color: #fff8e1;
            border-left: 4px solid var(--accent);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .highlight p {
            margin-bottom: 0;
            font-style: italic;
        }
        .stats-box {
            background: linear-gradient(135deg, #f0f4ff 0%, #e8edff 100%);
            border: 2px solid var(--primary);
            border-radius: var(--border-radius);
            padding: 25px;
            margin: 25px 0;
            box-shadow: var(--shadow);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-top: 20px;
        }
        .stat-item {
            text-align: center;
            padding: 15px;
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
        }
        .stat-value {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 5px;
        }
        .stat-label {
            font-size: 1rem;
            color: var(--text-light);
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--border-radius);
            margin: 25px auto;
            display: block;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .article-image:hover {
            transform: scale(1.01);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            margin-top: -15px;
            margin-bottom: 30px;
            font-size: 0.95rem;
        }
        .interactive-section {
            background-color: #f8f9fa;
            padding: 30px;
            border-radius: var(--border-radius);
            margin: 40px 0;
            box-shadow: var(--shadow);
        }
        .feature-title {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 20px;
            color: var(--primary);
        }
        .feature-title i {
            font-size: 1.8rem;
            color: var(--secondary);
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 20px 0;
        }
        .search-form input {
            flex-grow: 1;
            padding: 15px 20px;
            border: 2px solid #ddd;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-form input:focus {
            outline: none;
            border-color: var(--primary);
        }
        .search-form button {
            background: linear-gradient(90deg, var(--primary) 0%, #283593 100%);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: linear-gradient(90deg, var(--secondary) 0%, #d32f2f 100%);
        }
        .rating-system {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin: 25px 0;
        }
        .stars {
            display: flex;
            gap: 5px;
            cursor: pointer;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--accent);
            transform: scale(1.1);
        }
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
            max-width: 500px;
        }
        .rating-form input,
        .rating-form textarea {
            padding: 12px 15px;
            border: 2px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .rating-form input:focus,
        .rating-form textarea:focus {
            outline: none;
            border-color: var(--primary);
        }
        .rating-form button {
            background: linear-gradient(90deg, var(--primary) 0%, #283593 100%);
            color: white;
            border: none;
            padding: 15px 25px;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            align-self: flex-start;
        }
        .rating-form button:hover {
            background: linear-gradient(90deg, var(--secondary) 0%, #d32f2f 100%);
            transform: translateY(-3px);
        }
        .comment-section {
            margin: 40px 0;
        }
        .comment-form {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 40px;
        }
        .comment-form input,
        .comment-form textarea {
            padding: 15px;
            border: 2px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .comment-form input:focus,
        .comment-form textarea:focus {
            outline: none;
            border-color: var(--primary);
        }
        .comment-form textarea {
            grid-column: 1 / -1;
            min-height: 150px;
            resize: vertical;
        }
        .comment-form button {
            grid-column: 1 / -1;
            background: linear-gradient(90deg, var(--primary) 0%, #283593 100%);
            color: white;
            border: none;
            padding: 18px 25px;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            font-size: 1.1rem;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }
        .comment-form button:hover {
            background: linear-gradient(90deg, var(--secondary) 0%, #d32f2f 100%);
            transform: translateY(-3px);
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: var(--accent);
            font-size: 1.5rem;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid rgba(255, 255, 255, 0.1);
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-links a:hover {
            color: var(--accent);
            transform: translateX(5px);
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 25px;
            border-radius: var(--border-radius);
            margin: 20px 0;
        }
        friend-link h4 {
            color: var(--accent);
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }
        .friend-links a {
            background-color: rgba(255, 255, 255, 0.1);
            color: white;
            padding: 10px 20px;
            border-radius: 30px;
            text-decoration: none;
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .friend-links a:hover {
            background-color: var(--primary);
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        .update-time {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: rgba(255, 215, 0, 0.1);
            padding: 8px 15px;
            border-radius: 30px;
            margin: 15px 0;
            color: var(--accent);
            font-weight: 600;
        }
        .text-center { text-align: center; }
        .text-bold { font-weight: 700; }
        .text-accent { color: var(--accent); }
        .text-primary { color: var(--primary); }
        .text-secondary { color: var(--secondary); }
        @media (max-width: 992px) {
            .container {
                padding: 0 15px;
            }
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 2rem;
            }
            h3 {
                font-size: 1.6rem;
            }
            .content-section {
                padding: 0 20px 30px;
            }
            .comment-form {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 80px;
                left: -100%;
                flex-direction: column;
                background-color: var(--primary);
                width: 100%;
                text-align: center;
                transition: 0.5s;
                box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
                padding: 30px 0;
                gap: 0;
                z-index: 999;
            }
            .nav-links.active {
                left: 0;
            }
            .nav-links li {
                margin: 15px 0;
            }
            .hamburger {
                display: flex;
            }
            .hamburger.active span:nth-child(1) {
                transform: rotate(-45deg) translate(-5px, 6px);
            }
            .hamburger.active span:nth-child(2) {
                opacity: 0;
            }
            .hamburger.active span:nth-child(3) {
                transform: rotate(45deg) translate(-5px, -6px);
            }
            .header-top {
                padding: 12px 0;
            }
            .my-logo {
                font-size: 1.8rem;
            }
            .article-header {
                padding: 20px 15px;
            }
            h1 {
                font-size: 2rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .friend-links {
                justify-content: center;
            }
        }
        @media (max-width: 480px) {
            .my-logo {
                font-size: 1.5rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .content-section {
                padding: 0 15px 25px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input {
                border-radius: var(--border-radius);
                margin-bottom: 10px;
            }
            .search-form button {
                border-radius: var(--border-radius);
                padding: 15px;
                justify-content: center;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }