:root {
            --primary: #1a237e;
            --primary-light: #534bae;
            --primary-dark: #000051;
            --secondary: #f57c00;
            --secondary-light: #ffad42;
            --secondary-dark: #bb4d00;
            --text-light: #f5f5f5;
            --text-dark: #212121;
            --bg-light: #ffffff;
            --bg-dark: #121212;
            --card-bg: #f8f9fa;
            --border-color: #dee2e6;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.15);
            --radius: 8px;
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: var(--bg-light);
            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;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: var(--text-light);
            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;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo a:hover {
            color: var(--secondary-light);
        }
        .logo .fa-fire {
            color: var(--secondary);
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            color: var(--text-light);
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--secondary);
            transition: var(--transition);
        }
        .nav-desktop a:hover::after,
        .nav-desktop a:focus::after {
            width: 100%;
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-light);
            font-size: 1.5rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: var(--primary-dark);
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: var(--text-light);
            padding: 0.75rem 1rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .nav-mobile a:hover {
            background: rgba(255, 255, 255, 0.05);
            padding-left: 1.5rem;
        }
        .breadcrumb {
            background-color: var(--card-bg);
            padding: 0.75rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin: 0 10px;
            color: #6c757d;
        }
        .search-section {
            background: linear-gradient(to right, var(--primary-light), var(--primary));
            padding: 2rem 0;
            text-align: center;
            color: white;
        }
        .search-form {
            max-width: 600px;
            margin: 1rem auto 0;
            display: flex;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.9rem 1.2rem;
            border: none;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
        }
        .search-button {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-button:hover {
            background: var(--secondary-dark);
        }
        main {
            padding: 3rem 0;
        }
        .article-header {
            margin-bottom: 3rem;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 1.5rem;
        }
        h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 1rem;
            color: var(--primary-dark);
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            color: #666;
            font-size: 0.95rem;
            margin-top: 1rem;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .article-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .article-content {
                grid-template-columns: 1fr;
            }
        }
        .content-main h2 {
            font-size: 2rem;
            margin: 2.5rem 0 1rem;
            color: var(--primary);
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--border-color);
        }
        .content-main h3 {
            font-size: 1.6rem;
            margin: 2rem 0 1rem;
            color: var(--primary-dark);
        }
        .content-main h4 {
            font-size: 1.3rem;
            margin: 1.5rem 0 0.8rem;
            color: var(--primary-light);
        }
        .content-main p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .content-main ul, .content-main ol {
            margin-bottom: 1.5rem;
            padding-left: 2rem;
        }
        .content-main li {
            margin-bottom: 0.5rem;
        }
        .highlight {
            background: linear-gradient(120deg, rgba(245, 124, 0, 0.1) 0%, rgba(245, 124, 0, 0.05) 100%);
            border-left: 4px solid var(--secondary);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .note {
            background-color: #e8f4fd;
            border-left: 4px solid #2196f3;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .image-container {
            margin: 2.5rem 0;
            text-align: center;
        }
        .image-container img {
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin: 0 auto 1rem;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .image-container img:hover {
            transform: scale(1.01);
            box-shadow: var(--shadow-hover);
        }
        .image-caption {
            font-style: italic;
            color: #666;
            font-size: 0.95rem;
            margin-top: 0.5rem;
        }
        .table-wrapper {
            overflow-x: auto;
            margin: 2rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            box-shadow: var(--shadow);
        }
        th, td {
            padding: 1rem;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }
        th {
            background-color: var(--primary);
            color: white;
            font-weight: 600;
        }
        tr:nth-child(even) {
            background-color: var(--card-bg);
        }
        tr:hover {
            background-color: rgba(0, 0, 0, 0.02);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 1.5rem;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            font-size: 1.3rem;
            margin-bottom: 1rem;
            color: var(--primary);
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--border-color);
        }
        .related-links ul {
            list-style: none;
            padding-left: 0;
        }
        .related-links li {
            margin-bottom: 0.8rem;
        }
        .related-links a {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            padding: 0.5rem;
            border-radius: 4px;
        }
        .related-links a:hover {
            background: rgba(0, 0, 0, 0.05);
        }
        .related-links .fa-arrow-right {
            color: var(--secondary);
            font-size: 0.9rem;
        }
        .user-interaction {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 2rem;
            margin-top: 3rem;
            box-shadow: var(--shadow);
        }
        .interaction-header {
            text-align: center;
            margin-bottom: 2rem;
        }
        .interaction-header h2 {
            color: var(--primary);
        }
        .rating-section {
            text-align: center;
            margin-bottom: 2.5rem;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 2rem;
            color: #ddd;
        }
        .star {
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--secondary);
        }
        .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--primary-dark);
        }
        .form-input, .form-textarea {
            padding: 0.9rem;
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-input:focus, .form-textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.1);
        }
        .form-textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-button {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: var(--radius);
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            align-self: flex-start;
        }
        .submit-button:hover {
            background: var(--secondary-dark);
            transform: translateY(-2px);
        }
        footer {
            background: var(--primary-dark);
            color: var(--text-light);
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-section h3 {
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            color: var(--secondary-light);
            position: relative;
            padding-bottom: 0.7rem;
        }
        .footer-section h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 2px;
            background: var(--secondary);
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #ccc;
            display: flex;
            align-items: center;
            gap: 0.7rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary-light);
            padding-left: 5px;
        }
        .footer-links .fa-angle-right {
            font-size: 0.9rem;
            color: var(--secondary);
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius);
            padding: 1.5rem;
            margin-top: 1.5rem;
        }
        friend-link h4 {
            color: var(--secondary-light);
            margin-bottom: 1rem;
        }
        friend-link a {
            color: #ccc;
            display: inline-block;
            margin-right: 1rem;
            margin-bottom: 0.5rem;
            padding: 0.3rem 0.7rem;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 4px;
        }
        friend-link a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: white;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        .text-bold {
            font-weight: 700;
        }
        .text-secondary {
            color: var(--secondary);
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3em;
        }
        .last-updated {
            background: var(--card-bg);
            padding: 1rem;
            border-radius: var(--radius);
            margin: 2rem 0;
            display: flex;
            align-items: center;
            gap: 1rem;
            border-left: 4px solid var(--secondary);
        }
        .last-updated i {
            color: var(--secondary);
            font-size: 1.5rem;
        }