:root {
            --primary: #2a6e3f;
            --primary-dark: #1e4f2c;
            --secondary: #f0b429;
            --accent: #3a86ff;
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
            --light-gray: #e9ecef;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --radius: 8px;
            --transition: all 0.3s ease;
            --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(--dark);
            background-color: #fff;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        ul, ol {
            padding-left: 1.5rem;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .site-header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .my-logo i {
            color: var(--secondary);
        }
        .my-logo:hover {
            color: var(--primary-dark);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            font-weight: 600;
            color: var(--dark);
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary);
            transition: var(--transition);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--dark);
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--light-gray);
            padding: 0.8rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin: 0 0.5rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        main {
            padding: 3rem 0;
        }
        .article-header {
            margin-bottom: 3rem;
            text-align: center;
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: var(--primary-dark);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            color: var(--gray);
            font-size: 0.95rem;
            margin-bottom: 1.5rem;
        }
        .article-meta span i {
            margin-right: 0.3rem;
        }
        .last-updated {
            background-color: #fff8e1;
            padding: 0.8rem;
            border-radius: var(--radius);
            font-size: 0.9rem;
            margin-bottom: 2rem;
            border-left: 4px solid var(--secondary);
        }
        .article-body {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .article-body {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            font-size: 1.1rem;
        }
        .article-content h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--light-gray);
        }
        .article-content h3 {
            font-size: 1.6rem;
            color: var(--primary-dark);
            margin: 2rem 0 1rem;
        }
        .article-content h4 {
            font-size: 1.3rem;
            color: var(--dark);
            margin: 1.5rem 0 0.8rem;
        }
        .article-content p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .article-content strong {
            color: var(--primary-dark);
            font-weight: 700;
        }
        .article-content em {
            color: var(--gray);
            font-style: italic;
        }
        .article-content blockquote {
            border-left: 4px solid var(--secondary);
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: var(--primary-dark);
            background-color: var(--light);
            padding: 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .featured-image {
            margin: 2.5rem 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-image figcaption {
            text-align: center;
            font-size: 0.9rem;
            color: var(--gray);
            padding: 0.8rem;
            background-color: var(--light-gray);
        }
        .interactive-box {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            border-radius: var(--radius);
            padding: 2rem;
            margin: 2.5rem 0;
            border-left: 5px solid var(--accent);
            box-shadow: var(--shadow);
        }
        .interactive-box h3 {
            color: var(--accent);
            margin-top: 0;
        }
        .highlight {
            background-color: #fff8e1;
            padding: 1.5rem;
            border-radius: var(--radius);
            margin: 1.5rem 0;
            border: 1px dashed var(--secondary);
        }
        .sidebar {
            position: sticky;
            top: 120px;
            height: fit-content;
        }
        .sidebar-widget {
            background-color: white;
            border-radius: var(--radius);
            padding: 1.8rem;
            margin-bottom: 2rem;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--primary);
            margin-bottom: 1.2rem;
            font-size: 1.4rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .sidebar-widget h3 i {
            color: var(--secondary);
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex-grow: 1;
            padding: 0.8rem 1rem;
            border: 1px solid var(--light-gray);
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: var(--primary-dark);
        }
        .rating-widget .stars {
            display: flex;
            gap: 0.3rem;
            margin-bottom: 1rem;
        }
        .rating-widget .stars i {
            color: #ddd;
            cursor: pointer;
            font-size: 1.5rem;
            transition: var(--transition);
        }
        .rating-widget .stars i:hover,
        .rating-widget .stars i.active {
            color: var(--secondary);
        }
        .rating-form input,
        .rating-form textarea,
        .comment-form input,
        .comment-form textarea {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 1px solid var(--light-gray);
            border-radius: var(--radius);
            font-family: inherit;
        }
        .rating-form button,
        .comment-form button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: var(--radius);
            cursor: pointer;
            transition: var(--transition);
            font-weight: 600;
        }
        .rating-form button:hover,
        .comment-form button:hover {
            background-color: var(--primary-dark);
        }
        .related-links {
            list-style: none;
            padding-left: 0;
        }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed var(--light-gray);
        }
        .related-links li:last-child {
            border-bottom: none;
        }
        .related-links a {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            color: var(--dark);
        }
        .related-links a:hover {
            color: var(--primary);
        }
        .related-links i {
            color: var(--primary);
        }
        .site-footer {
            background-color: var(--dark);
            color: white;
            padding: 4rem 0 2rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }
        .footer-widget h3 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.4rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #bbb;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 0.3rem;
        }
        friend-link {
            display: block;
            margin-top: 1rem;
            padding: 1rem;
            background-color: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius);
        }
        friend-link a {
            color: var(--secondary);
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #bbb;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: white;
                box-shadow: var(--shadow);
                padding: 1rem;
                transform: translateY(-100%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
            }
            .main-nav.active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1rem;
            }
            .hamburger {
                display: block;
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
            .article-body {
                gap: 2rem;
            }
        }
        @media (max-width: 576px) {
            .container {
                padding: 0 1rem;
            }
            .article-header h1 {
                font-size: 1.8rem;
            }
            .article-meta {
                flex-direction: column;
                align-items: center;
                gap: 0.5rem;
            }
        }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mt-2 { margin-top: 2rem; }
        .py-2 { padding-top: 2rem; padding-bottom: 2rem; }