:root {
            --primary: #1a5276;
            --secondary: #e74c3c;
            --accent: #f39c12;
            --light: #f8f9fa;
            --dark: #2c3e50;
            --gray: #7f8c8d;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
            --border-radius: 10px;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f5f7fa;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--border-radius);
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary), var(--dark));
            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;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            text-transform: uppercase;
            letter-spacing: 1px;
            background: linear-gradient(90deg, var(--accent), #fff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        nav ul {
            display: flex;
            list-style: none;
        }
        nav ul li {
            margin-left: 2rem;
        }
        nav ul li a {
            color: white;
            font-weight: 500;
            padding: 0.5rem 0;
            position: relative;
        }
        nav ul li a:hover {
            color: var(--accent);
        }
        nav ul li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width 0.3s;
        }
        nav ul li a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            background: none;
            border: none;
            color: white;
        }
        .breadcrumb {
            background-color: rgba(255, 255, 255, 0.1);
            padding: 0.8rem 20px;
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #ddd;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb span {
            color: #bbb;
            margin: 0 5px;
        }
        .search-box {
            background: white;
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 2rem auto;
            box-shadow: var(--shadow);
            text-align: center;
        }
        .search-box h2 {
            color: var(--primary);
            margin-bottom: 1rem;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-form input {
            flex: 1;
            padding: 0.8rem 1rem;
            border: 2px solid #ddd;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: var(--secondary);
        }
        main {
            padding: 2rem 0;
        }
        article {
            background: white;
            border-radius: var(--border-radius);
            padding: 2.5rem;
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
        }
        h1 {
            color: var(--primary);
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid var(--accent);
            padding-bottom: 0.5rem;
        }
        h2 {
            color: var(--dark);
            font-size: 2rem;
            margin: 2rem 0 1rem;
            padding-top: 1rem;
            border-top: 1px dashed #eee;
        }
        h3 {
            color: var(--secondary);
            font-size: 1.6rem;
            margin: 1.5rem 0 1rem;
        }
        h4 {
            color: var(--gray);
            font-size: 1.3rem;
            margin: 1.2rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            color: var(--primary);
            font-weight: 500;
            background: #e8f4fc;
            padding: 1rem;
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .highlight {
            background: linear-gradient(120deg, #fdfd96 0%, #fdfd96 100%);
            padding: 0.2rem 0.4rem;
            border-radius: 3px;
            font-weight: 600;
        }
        b, strong {
            color: var(--dark);
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .image-container {
            margin: 2rem auto;
            text-align: center;
            max-width: 800px;
        }
        .image-container img {
            box-shadow: 0 6px 20px rgba(0,0,0,0.1);
            transition: var(--transition);
        }
        .image-container img:hover {
            transform: scale(1.01);
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
        }
        .caption {
            font-style: italic;
            color: var(--gray);
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .link-list {
            background: #f8f9fa;
            border-radius: var(--border-radius);
            padding: 1.5rem;
            margin: 2rem 0;
            border-left: 5px solid var(--accent);
        }
        .link-list h3 {
            margin-top: 0;
        }
        .link-list ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 0.8rem;
            list-style: none;
        }
        .link-list li a {
            display: block;
            padding: 0.7rem 1rem;
            background: white;
            border-radius: 5px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        }
        .link-list li a:hover {
            background: var(--primary);
            color: white;
            transform: translateY(-3px);
        }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: linear-gradient(145deg, var(--primary), #2c3e50);
            color: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            text-align: center;
            box-shadow: var(--shadow);
        }
        .stat-card i {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            color: var(--accent);
        }
        .stat-card .number {
            font-size: 2.2rem;
            font-weight: 800;
            display: block;
        }
        .stat-card .label {
            font-size: 0.9rem;
            opacity: 0.9;
        }
        blockquote {
            border-left: 5px solid var(--secondary);
            padding: 1.5rem;
            margin: 2rem 0;
            background: #fff5f5;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            font-style: italic;
            color: #555;
        }
        blockquote cite {
            display: block;
            margin-top: 0.5rem;
            color: var(--secondary);
            font-weight: 600;
        }
        .interaction {
            background: white;
            border-radius: var(--border-radius);
            padding: 2rem;
            box-shadow: var(--shadow);
            margin: 3rem 0;
        }
        .tabs {
            display: flex;
            border-bottom: 2px solid #eee;
            margin-bottom: 1.5rem;
        }
        .tab-button {
            padding: 0.8rem 1.5rem;
            background: none;
            border: none;
            font-size: 1rem;
            font-weight: 600;
            color: var(--gray);
            cursor: pointer;
            transition: var(--transition);
            border-bottom: 3px solid transparent;
        }
        .tab-button.active {
            color: var(--primary);
            border-bottom: 3px solid var(--primary);
        }
        .tab-content {
            display: none;
            animation: fadeIn 0.5s;
        }
        .tab-content.active {
            display: block;
        }
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }
        .rating {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1.5rem;
        }
        .stars {
            display: flex;
            gap: 0.3rem;
        }
        .stars i {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .stars i:hover,
        .stars i.active {
            color: var(--accent);
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid #ccc;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 82, 118, 0.1);
        }
        button[type="submit"] {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        button[type="submit"]:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(231, 76, 60, 0.3);
        }
        .comments-list {
            margin-top: 2rem;
        }
        .comment {
            background: #f9f9f9;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin-bottom: 1rem;
            border-left: 4px solid var(--primary);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 0.5rem;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .comment-author {
            font-weight: 600;
            color: var(--dark);
        }
        .update-time {
            text-align: right;
            font-size: 0.9rem;
            color: var(--gray);
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid #eee;
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: var(--accent);
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
        }
        .footer-section ul {
            list-style: none;
        }
        .footer-section ul li {
            margin-bottom: 0.8rem;
        }
        .footer-section ul li a {
            color: #ddd;
        }
        .footer-section ul li a:hover {
            color: var(--accent);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 1rem;
            border-radius: 5px;
            margin-bottom: 0.8rem;
            transition: var(--transition);
        }
        friend-link:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            article { padding: 2rem; }
        }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--primary);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem 0;
                box-shadow: var(--shadow);
            }
            nav ul.active {
                display: flex;
            }
            nav ul li {
                margin: 0;
                text-align: center;
            }
            nav ul li a {
                display: block;
                padding: 1rem;
            }
            .hamburger { display: block; }
            .search-form { flex-direction: column; }
            .search-form input {
                border-radius: 50px;
                margin-bottom: 1rem;
            }
            .search-form button {
                border-radius: 50px;
                width: 100%;
            }
            .link-list ul {
                grid-template-columns: 1fr;
            }
            .stats-box {
                grid-template-columns: 1fr;
            }
            .tabs {
                flex-wrap: wrap;
            }
        }
        .schema-data {
            display: none;
        }