:root {
            --primary-color: #3a86ff;
            --secondary-color: #8338ec;
            --dark-color: #1a1a2e;
            --light-color: #f8f9fa;
            --gray-color: #6c757d;
            --success-color: #06d6a0;
            --warning-color: #ffbe0b;
            --danger-color: #ef476f;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --border-radius: 12px;
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #fff;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary-color);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: var(--dark-color);
            color: white;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .logo a:hover {
            opacity: 0.9;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 500;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--warning-color);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            background: var(--warning-color);
            left: 0;
            bottom: 0;
            transition: var(--transition);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            background-color: #f1f3f5;
            padding: 0.8rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            margin-right: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 0.5rem;
            color: var(--gray-color);
        }
        .breadcrumb a {
            color: var(--gray-color);
        }
        .breadcrumb a:hover {
            color: var(--primary-color);
        }
        .search-section {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            padding: 3rem 0;
            text-align: center;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .search-input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1rem;
            outline: none;
        }
        .search-btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 2rem;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: var(--secondary-color);
        }
        .main-content {
            padding: 3rem 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content h1 {
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            color: var(--dark-color);
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            gap: 1rem;
            color: var(--gray-color);
            font-size: 0.95rem;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #e9ecef;
        }
        .article-tag {
            background-color: #e7f1ff;
            color: var(--primary-color);
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
        }
        .article-intro {
            font-size: 1.2rem;
            color: #495057;
            margin-bottom: 2.5rem;
            padding: 1.5rem;
            background-color: #f8f9fa;
            border-left: 4px solid var(--primary-color);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .article-body h2 {
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            color: var(--dark-color);
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e9ecef;
        }
        .article-body h3 {
            font-size: 1.5rem;
            margin: 2rem 0 1rem;
            color: #2d3748;
        }
        .article-body p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .article-body ul, .article-body ol {
            margin-bottom: 1.5rem;
            padding-left: 1.5rem;
        }
        .article-body li {
            margin-bottom: 0.5rem;
        }
        .key-point {
            background-color: #fff9db;
            border-left: 4px solid var(--warning-color);
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .key-point strong {
            color: #e67700;
        }
        .featured-image {
            margin: 2.5rem 0;
            text-align: center;
        }
        .featured-image img {
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            width: 100%;
            max-height: 500px;
            object-fit: cover;
        }
        .image-caption {
            font-size: 0.9rem;
            color: var(--gray-color);
            margin-top: 0.5rem;
            font-style: italic;
        }
        .inline-link {
            font-weight: 600;
            border-bottom: 1px dashed currentColor;
        }
        .inline-link:hover {
            border-bottom-style: solid;
        }
        .quote {
            font-size: 1.3rem;
            font-style: italic;
            color: var(--secondary-color);
            border-left: 4px solid var(--secondary-color);
            padding: 1.5rem 2rem;
            margin: 2.5rem 0;
            background-color: #f8f0fc;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .quote-author {
            display: block;
            font-size: 1rem;
            color: var(--gray-color);
            margin-top: 1rem;
            font-style: normal;
            font-weight: 600;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: 0 0 10px rgba(0,0,0,0.05);
            border-radius: var(--border-radius);
            overflow: hidden;
        }
        .data-table th {
            background-color: var(--primary-color);
            color: white;
            padding: 1rem;
            text-align: left;
        }
        .data-table td {
            padding: 1rem;
            border-bottom: 1px solid #e9ecef;
        }
        .data-table tr:nth-child(even) {
            background-color: #f8f9fa;
        }
        .data-table tr:hover {
            background-color: #e7f1ff;
        }
        .sidebar {
            position: sticky;
            top: 120px;
            height: fit-content;
        }
        .sidebar-widget {
            background-color: #f8f9fa;
            border-radius: var(--border-radius);
            padding: 1.5rem;
            margin-bottom: 2rem;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            font-size: 1.3rem;
            margin-bottom: 1.2rem;
            color: var(--dark-color);
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e9ecef;
        }
        .rating-widget form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ddd;
            margin: 0.5rem 0;
        }
        .stars i {
            cursor: pointer;
            transition: var(--transition);
        }
        .stars i:hover,
        .stars i.active {
            color: var(--warning-color);
        }
        .rating-input {
            display: none;
        }
        .rating-submit {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0.8rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .rating-submit:hover {
            background-color: var(--secondary-color);
        }
        .quick-links ul {
            list-style: none;
        }
        .quick-links li {
            margin-bottom: 0.8rem;
        }
        .quick-links a {
            display: block;
            padding: 0.8rem 1rem;
            background-color: white;
            border-radius: 8px;
            border-left: 4px solid var(--primary-color);
            transition: var(--transition);
        }
        .quick-links a:hover {
            background-color: #e7f1ff;
            transform: translateX(5px);
        }
        .comments-section {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px solid #e9ecef;
        }
        .comments-section h2 {
            font-size: 2rem;
            margin-bottom: 1.5rem;
        }
        .comment-form {
            background-color: #f8f9fa;
            padding: 2rem;
            border-radius: var(--border-radius);
            margin-bottom: 3rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid #ced4da;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(58, 134, 255, 0.1);
        }
        .submit-btn {
            background-color: var(--success-color);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background-color: #05b787;
            transform: translateY(-2px);
        }
        .comment {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
            border-left: 4px solid #e9ecef;
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 1rem;
            font-size: 0.9rem;
            color: var(--gray-color);
        }
        .comment-author {
            font-weight: 700;
            color: var(--dark-color);
        }
        .footer-links {
            background-color: #f8f9fa;
            padding: 3rem 0;
            border-top: 1px solid #dee2e6;
            border-bottom: 1px solid #dee2e6;
        }
        .web-link-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background-color: white;
            padding: 1.2rem;
            border-radius: var(--border-radius);
            box-shadow: 0 2px 6px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 6px 15px rgba(0,0,0,0.1);
        }
        .web-link a {
            color: var(--dark-color);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .web-link a:hover {
            color: var(--primary-color);
        }
        .web-link i {
            color: var(--primary-color);
        }
        .site-footer {
            background-color: var(--dark-color);
            color: #adb5bd;
            padding: 3rem 0 2rem;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .copyright {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #495057;
            width: 100%;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                background-color: var(--dark-color);
                padding: 2rem;
                transition: var(--transition);
                box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            }
            .main-nav.active {
                left: 0;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1.5rem;
            }
            .hamburger {
                display: block;
            }
            .article-content h1 {
                font-size: 2.2rem;
            }
            .article-body h2 {
                font-size: 1.8rem;
            }
            .search-form {
                flex-direction: column;
                border-radius: var(--border-radius);
            }
            .search-input, .search-btn {
                width: 100%;
                border-radius: 0;
            }
            .search-btn {
                padding: 1rem;
            }
        }