:root {
            --primary-color: #1a237e;
            --secondary-color: #ffab00;
            --accent-color: #d32f2f;
            --dark-bg: #121212;
            --light-bg: #f5f5f7;
            --text-dark: #333333;
            --text-light: #ffffff;
            --text-muted: #757575;
            --border-color: #e0e0e0;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --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: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: var(--light-bg);
            overflow-x: hidden;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-color);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul, ol {
            padding-left: 2rem;
            margin: 1rem 0;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-color) 0%, #283593 100%);
            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 {
            color: var(--text-light);
            font-size: 1.8rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            letter-spacing: 1px;
        }
        .logo i {
            color: var(--secondary-color);
        }
        .logo span {
            background: linear-gradient(90deg, var(--secondary-color), #ffd54f);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .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:hover {
            color: var(--secondary-color);
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--secondary-color);
            transition: width 0.3s ease;
        }
        .nav-desktop a:hover::after {
            width: 100%;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50px;
            padding: 0.4rem 1rem;
            margin-left: 1rem;
        }
        .search-box input {
            background: transparent;
            border: none;
            color: white;
            outline: none;
            width: 180px;
            padding: 0.3rem;
        }
        .search-box input::placeholder {
            color: rgba(255, 255, 255, 0.7);
        }
        .search-box button {
            background: transparent;
            border: none;
            color: var(--secondary-color);
            cursor: pointer;
        }
        .hamburger {
            display: none;
            background: transparent;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background-color: var(--dark-bg);
            padding: 1rem;
            transform: translateY(-100%);
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 999;
            box-shadow: var(--shadow);
        }
        .nav-mobile.active {
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
        }
        .nav-mobile a {
            display: block;
            color: var(--text-light);
            padding: 0.8rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            font-weight: 600;
        }
        .nav-mobile a:hover {
            color: var(--secondary-color);
            padding-left: 0.5rem;
        }
        .mobile-search {
            margin-top: 1rem;
            display: flex;
        }
        .mobile-search input {
            flex-grow: 1;
            padding: 0.7rem;
            border-radius: 4px 0 0 4px;
            border: none;
        }
        .mobile-search button {
            background-color: var(--secondary-color);
            color: var(--dark-bg);
            border: none;
            padding: 0 1rem;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #f0f2f5;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            color: var(--text-muted);
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary-color);
        }
        .breadcrumb i {
            margin: 0 0.5rem;
            font-size: 0.7rem;
        }
        main {
            flex-grow: 1;
            padding: 2rem 0;
        }
        .article-container {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        @media (max-width: 992px) {
            .article-container {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 2.5rem;
            box-shadow: var(--shadow);
        }
        .article-header {
            margin-bottom: 2.5rem;
            border-bottom: 2px solid var(--border-color);
            padding-bottom: 1.5rem;
        }
        .article-header h1 {
            font-size: 2.5rem;
            line-height: 1.2;
            margin-bottom: 1rem;
            color: var(--primary-color);
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 1rem;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .article-meta i {
            color: var(--secondary-color);
        }
        .featured-image {
            margin: 2rem 0 3rem;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-image figcaption {
            text-align: center;
            font-style: italic;
            padding: 0.8rem;
            color: var(--text-muted);
            background-color: #f9f9f9;
            font-size: 0.9rem;
        }
        .content-section {
            margin-bottom: 3rem;
        }
        h2 {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--border-color);
        }
        h3 {
            font-size: 1.4rem;
            color: var(--primary-color);
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .highlight {
            background: linear-gradient(120deg, rgba(255, 171, 0, 0.15) 0%, rgba(255, 171, 0, 0) 100%);
            border-left: 4px solid var(--secondary-color);
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .tip-box {
            background-color: #e8f4fd;
            border: 1px solid #bbdefb;
            border-radius: var(--border-radius);
            padding: 1.5rem;
            margin: 1.5rem 0;
            position: relative;
        }
        .tip-box::before {
            content: '\f0eb';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            top: -12px;
            left: 20px;
            background-color: #2196f3;
            color: white;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
        }
        .warning-box {
            background-color: #ffebee;
            border: 1px solid #ffcdd2;
            border-radius: var(--border-radius);
            padding: 1.5rem;
            margin: 1.5rem 0;
            position: relative;
        }
        .warning-box::before {
            content: '\f06a';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            top: -12px;
            left: 20px;
            background-color: var(--accent-color);
            color: white;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
        }
        .hero-combo {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .combo-card {
            background-color: #f8f9fa;
            border-radius: var(--border-radius);
            padding: 1.5rem;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .combo-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            border-color: var(--secondary-color);
        }
        .combo-card h4 {
            color: var(--primary-color);
            margin-bottom: 0.8rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .combo-card h4 i {
            color: var(--secondary-color);
        }
        .combo-rating {
            color: #ffc107;
            margin: 0.5rem 0;
        }
        blockquote {
            font-style: italic;
            color: var(--text-muted);
            border-left: 4px solid var(--secondary-color);
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-size: 1.1rem;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 1.8rem;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            font-size: 1.3rem;
            margin-top: 0;
            padding-bottom: 0.8rem;
            border-bottom: 2px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }
        .sidebar-widget h3 i {
            color: var(--secondary-color);
        }
        .related-links ul {
            list-style: none;
            padding-left: 0;
        }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed var(--border-color);
        }
        .related-links li:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        .related-links a {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            color: var(--text-dark);
        }
        .related-links a:hover {
            color: var(--primary-color);
            gap: 1rem;
        }
        .related-links i {
            color: var(--secondary-color);
            font-size: 0.8rem;
        }
        .cta-box {
            background: linear-gradient(135deg, var(--primary-color) 0%, #283593 100%);
            color: white;
            text-align: center;
            padding: 2rem;
            border-radius: var(--border-radius);
        }
        .cta-box h3 {
            color: white;
            border-bottom: none;
        }
        .cta-box p {
            margin: 1rem 0 1.5rem;
            opacity: 0.9;
        }
        .btn {
            display: inline-block;
            background-color: var(--secondary-color);
            color: var(--dark-bg);
            padding: 0.8rem 1.8rem;
            border-radius: 50px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn:hover {
            background-color: #ffb300;
            transform: scale(1.05);
            box-shadow: 0 4px 12px rgba(255, 171, 0, 0.3);
        }
        .interactive-section {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 2rem;
            margin: 3rem 0;
            box-shadow: var(--shadow);
            border-top: 5px solid var(--secondary-color);
        }
        .interactive-section h2 {
            margin-top: 0;
            border-bottom: none;
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .rating-widget, .comment-form {
            margin: 2rem 0;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
        }
        .rating-stars .star {
            transition: var(--transition);
        }
        .rating-stars .star:hover,
        .rating-stars .star.active {
            color: #ffc107;
            transform: scale(1.1);
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.1);
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }
        @media (max-width: 768px) {
            .form-row {
                grid-template-columns: 1fr;
            }
        }
        .form-actions {
            display: flex;
            justify-content: flex-end;
            gap: 1rem;
        }
        .btn-submit {
            background-color: var(--primary-color);
            color: white;
        }
        .btn-submit:hover {
            background-color: #283593;
        }
        .btn-reset {
            background-color: #f5f5f5;
            color: var(--text-dark);
        }
        .btn-reset:hover {
            background-color: #e0e0e0;
        }
        .footer-links-section {
            background-color: #f8f9fa;
            padding: 3rem 0;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 1.5rem;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            border-color: var(--secondary-color);
        }
        .web-link a {
            color: var(--text-dark);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .web-link a:hover {
            color: var(--primary-color);
        }
        .web-link i {
            color: var(--secondary-color);
        }
        .site-footer {
            background-color: var(--dark-bg);
            color: var(--text-light);
            padding: 3rem 0 1.5rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-logo a {
            color: white;
            font-size: 1.8rem;
            font-weight: 800;
        }
        .footer-logo span {
            color: var(--secondary-color);
        }
        .footer-about p {
            margin-top: 1rem;
            opacity: 0.8;
            line-height: 1.6;
        }
        .footer-links h4,
        .footer-social h4 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.2rem;
            position: relative;
            padding-bottom: 0.7rem;
        }
        .footer-links h4::after,
        .footer-social h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background-color: var(--secondary-color);
        }
        .footer-links ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.8);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary-color);
            padding-left: 0.5rem;
        }
        .social-icons {
            display: flex;
            gap: 1rem;
            margin-top: 1rem;
        }
        .social-icons a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            color: white;
            transition: var(--transition);
        }
        .social-icons a:hover {
            background-color: var(--secondary-color);
            color: var(--dark-bg);
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
        }
        .text-center {
            text-align: center;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .keyword {
            background-color: rgba(255, 171, 0, 0.15);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
            color: var(--primary-color);
        }
        @media (max-width: 768px) {
            .article-header h1 {
                font-size: 1.8rem;
            }
            .article-content {
                padding: 1.5rem;
            }
            .sidebar {
                order: -1;
            }
            .form-actions {
                flex-direction: column;
            }
            .btn {
                width: 100%;
                text-align: center;
            }
        }