:root {
            --primary-dark: #0a2a4a;
            --primary-blue: #1e5b9e;
            --accent-gold: #ffcc00;
            --accent-green: #2ecc71;
            --light-bg: #f8f9fa;
            --dark-text: #2c3e50;
            --gray-text: #7f8c8d;
            --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: 1.7;
            color: var(--dark-text);
            background-color: #fff;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--accent-gold);
            text-decoration: none;
            text-transform: uppercase;
            letter-spacing: 2px;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
            transition: var(--transition);
        }
        .my-logo:hover {
            color: white;
            transform: scale(1.05);
        }
        .my-logo span {
            color: white;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .main-nav a:hover {
            background-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            background-color: var(--light-bg);
            padding: 1rem 0;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .breadcrumb a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .separator {
            color: var(--gray-text);
        }
        .search-section {
            background: linear-gradient(to right, #f8f9fa, #e9ecef);
            padding: 3rem 0;
            text-align: center;
        }
        .search-form {
            max-width: 700px;
            margin: 0 auto;
            display: flex;
            box-shadow: var(--shadow);
            border-radius: 50px;
            overflow: hidden;
        }
        .search-input {
            flex: 1;
            padding: 1.2rem 2rem;
            border: none;
            font-size: 1.1rem;
            outline: none;
        }
        .search-button {
            background-color: var(--accent-green);
            color: white;
            border: none;
            padding: 0 2.5rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .search-button:hover {
            background-color: #27ae60;
        }
        main {
            padding: 3rem 0;
        }
        .article-header {
            margin-bottom: 3rem;
            text-align: center;
            padding-bottom: 2rem;
            border-bottom: 3px solid var(--accent-gold);
        }
        .article-header h1 {
            font-size: 3.2rem;
            color: var(--primary-dark);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 2rem;
            color: var(--gray-text);
            font-size: 0.95rem;
            flex-wrap: wrap;
        }
        .last-updated {
            background-color: #fff9e6;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            border-left: 4px solid var(--accent-gold);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .content-section {
            margin-bottom: 4rem;
        }
        h2 {
            font-size: 2.5rem;
            color: var(--primary-blue);
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--border-color);
        }
        h3 {
            font-size: 1.8rem;
            color: var(--primary-dark);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: var(--primary-blue);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight-box {
            background: linear-gradient(135deg, #f0f7ff 0%, #e3f2fd 100%);
            border-left: 5px solid var(--primary-blue);
            padding: 2rem;
            margin: 2.5rem 0;
            border-radius: 0 8px 8px 0;
            box-shadow: var(--shadow);
        }
        .highlight-box strong {
            color: var(--primary-dark);
            font-size: 1.2rem;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        .stat-card {
            background: white;
            padding: 1.8rem;
            border-radius: 10px;
            text-align: center;
            box-shadow: var(--shadow);
            border-top: 4px solid var(--accent-green);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-blue);
            margin-bottom: 0.5rem;
        }
        .stat-label {
            font-size: 1.1rem;
            color: var(--dark-text);
            font-weight: 600;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 2.5rem auto;
            border-radius: 12px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        img:hover {
            transform: scale(1.01);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray-text);
            margin-top: -1.5rem;
            margin-bottom: 2.5rem;
        }
        .content-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 2rem 0;
            padding: 1.5rem;
            background-color: var(--light-bg);
            border-radius: 8px;
        }
        .content-link {
            background: white;
            padding: 0.8rem 1.5rem;
            border-radius: 30px;
            text-decoration: none;
            color: var(--primary-blue);
            font-weight: 600;
            border: 2px solid var(--border-color);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .content-link:hover {
            background-color: var(--primary-blue);
            color: white;
            border-color: var(--primary-blue);
            transform: translateY(-3px);
        }
        .user-interaction {
            background-color: var(--light-bg);
            padding: 4rem 0;
            margin: 4rem 0;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2.5rem;
        }
        .interaction-card {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: var(--shadow);
            text-align: center;
        }
        .interaction-card i {
            font-size: 3rem;
            color: var(--primary-blue);
            margin-bottom: 1.5rem;
        }
        .interaction-card h3 {
            color: var(--primary-dark);
            margin-bottom: 1.2rem;
        }
        .rating-stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1.5rem 0;
            font-size: 1.8rem;
            color: var(--accent-gold);
        }
        .rating-stars .star {
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars .star:hover {
            transform: scale(1.3);
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
            margin-top: 1.5rem;
        }
        input, textarea, select {
            padding: 1rem;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 1rem;
            font-family: inherit;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(30, 91, 158, 0.2);
        }
        textarea {
            min-height: 150px;
            resize: vertical;
        }
        .form-button {
            background: linear-gradient(to right, var(--primary-blue), var(--primary-dark));
            color: white;
            border: none;
            padding: 1.2rem;
            border-radius: 6px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .form-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(30, 91, 158, 0.4);
        }
        .comments-section {
            margin: 4rem 0;
        }
        .comment {
            background: white;
            padding: 1.8rem;
            margin-bottom: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
            border-left: 4px solid var(--accent-green);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 1rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px solid var(--border-color);
        }
        .comment-author {
            font-weight: 700;
            color: var(--primary-dark);
        }
        .comment-date {
            color: var(--gray-text);
            font-size: 0.9rem;
        }
        .site-footer {
            background: var(--primary-dark);
            color: white;
            padding: 4rem 0 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 3rem;
        }
        .footer-section h3 {
            color: var(--accent-gold);
            margin-bottom: 1.5rem;
            font-size: 1.5rem;
            border-bottom: 2px solid rgba(255, 204, 0, 0.3);
            padding-bottom: 0.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #ddd;
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .footer-links a:hover {
            color: var(--accent-gold);
            padding-left: 0.5rem;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.1);
            padding: 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        friend-link a {
            color: var(--accent-gold);
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            display: block;
            padding: 0.5rem;
            transition: var(--transition);
        }
        friend-link a:hover {
            background: rgba(255, 204, 0, 0.1);
            border-radius: 4px;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.95rem;
        }
        @media (max-width: 992px) {
            .article-header h1 {
                font-size: 2.8rem;
            }
            h2 {
                font-size: 2.2rem;
            }
            .main-nav ul {
                gap: 1rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav ul {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background-color: var(--primary-dark);
                flex-direction: column;
                padding: 1.5rem;
                gap: 1rem;
                box-shadow: 0 10px 20px rgba(0,0,0,0.2);
                border-top: 2px solid var(--accent-gold);
            }
            .main-nav.active ul {
                display: flex;
            }
            .main-nav a {
                padding: 1rem;
                justify-content: center;
                border-radius: 6px;
            }
            .article-header h1 {
                font-size: 2.3rem;
            }
            h2 {
                font-size: 1.9rem;
            }
            .search-form {
                flex-direction: column;
                border-radius: 12px;
            }
            .search-input, .search-button {
                width: 100%;
                border-radius: 0;
                padding: 1.2rem;
            }
        }
        @media (max-width: 480px) {
            .article-header h1 {
                font-size: 2rem;
            }
            .article-meta {
                flex-direction: column;
                gap: 1rem;
                align-items: center;
            }
            .container {
                padding: 0 15px;
            }
            .interaction-card {
                padding: 1.8rem;
            }
        }
        @media print {
            .site-header, .search-section, .user-interaction, .site-footer {
                display: none;
            }
            body {
                color: black;
                background: white;
            }
            a {
                color: black;
                text-decoration: underline;
            }
        }