:root {
            --primary-color: #2E7D32;
            --primary-dark: #1B5E20;
            --primary-light: #4CAF50;
            --secondary-color: #FF9800;
            --dark-bg: #121212;
            --light-bg: #f8f9fa;
            --text-dark: #212121;
            --text-light: #757575;
            --text-white: #ffffff;
            --border-color: #e0e0e0;
            --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;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.6;
            color: var(--text-dark);
            background-color: var(--light-bg);
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul, ol {
            padding-left: 1.5rem;
            margin: 1rem 0;
        }
        li {
            margin-bottom: 0.5rem;
        }
        h1, h2, h3, h4 {
            color: var(--primary-dark);
            margin-top: 1.5em;
            margin-bottom: 0.75em;
            line-height: 1.3;
            font-weight: 700;
        }
        h1 {
            font-size: 2.5rem;
            border-bottom: 3px solid var(--secondary-color);
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            border-left: 4px solid var(--primary-color);
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.75rem;
            color: var(--primary-color);
        }
        h4 {
            font-size: 1.5rem;
            color: var(--text-light);
        }
        p {
            margin-bottom: 1.25rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.25rem;
            color: var(--text-light);
            font-weight: 300;
        }
        strong {
            color: var(--primary-dark);
            font-weight: 700;
        }
        em {
            font-style: italic;
            color: var(--text-light);
        }
        blockquote {
            border-left: 4px solid var(--secondary-color);
            padding: 1rem 2rem;
            margin: 2rem 0;
            background-color: rgba(255, 152, 0, 0.05);
            font-style: italic;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        main {
            flex: 1;
            padding: 2rem 0;
        }
        .site-header {
            background-color: var(--primary-dark);
            color: var(--text-white);
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .my-logo:hover {
            text-decoration: none;
            color: var(--secondary-color);
        }
        .my-logo i {
            color: var(--secondary-color);
        }
        .main-nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-links a {
            color: var(--text-white);
            font-weight: 500;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-links a:hover {
            text-decoration: none;
            color: var(--secondary-color);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--secondary-color);
            transition: var(--transition);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.75rem;
            background: none;
            border: none;
            color: var(--text-white);
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            background-color: var(--light-bg);
            padding: 1rem 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            padding-left: 0;
            margin: 0;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            margin-bottom: 0;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin: 0 0.75rem;
            color: var(--text-light);
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary-color);
        }
        .article-content {
            background-color: white;
            padding: 3rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin-top: 2rem;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 1.5rem;
            margin-bottom: 2rem;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-light);
            font-size: 0.9rem;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .update-time {
            background-color: rgba(46, 125, 50, 0.1);
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
            color: var(--primary-dark);
        }
        .featured-image {
            margin: 2rem 0;
            text-align: center;
        }
        .featured-image img {
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin: 0 auto;
        }
        .image-caption {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-top: 0.75rem;
            font-style: italic;
        }
        .content-section {
            margin-bottom: 3rem;
        }
        .btn {
            display: inline-block;
            background-color: var(--primary-color);
            color: white;
            padding: 0.75rem 1.5rem;
            border-radius: var(--radius);
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            background-color: var(--primary-dark);
            text-decoration: none;
            color: white;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(46, 125, 50, 0.3);
        }
        .btn-secondary {
            background-color: var(--secondary-color);
        }
        .btn-secondary:hover {
            background-color: #e68900;
        }
        .interactive-module {
            background-color: var(--light-bg);
            padding: 2rem;
            border-radius: var(--radius);
            margin: 3rem 0;
            border: 1px solid var(--border-color);
        }
        .module-title {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .module-title i {
            color: var(--primary-color);
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--text-dark);
        }
        .form-control {
            width: 100%;
            padding: 0.875rem 1rem;
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.1);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            font-size: 1.75rem;
            color: #ddd;
            margin: 1rem 0;
        }
        .star-rating label {
            cursor: pointer;
            margin-bottom: 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label {
            color: var(--secondary-color);
        }
        .internal-links {
            background-color: rgba(46, 125, 50, 0.05);
            padding: 1.5rem;
            border-radius: var(--radius);
            margin: 2rem 0;
            border-left: 4px solid var(--primary-color);
        }
        .internal-links h3 {
            margin-top: 0;
        }
        .internal-links ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 0.75rem;
            list-style: none;
            padding-left: 0;
        }
        .internal-links li {
            margin-bottom: 0;
        }
        .internal-links a {
            display: block;
            padding: 0.75rem;
            background-color: white;
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .internal-links a:hover {
            background-color: var(--primary-color);
            color: white;
            text-decoration: none;
            transform: translateX(5px);
        }
        .site-footer {
            background-color: var(--dark-bg);
            color: var(--text-white);
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: var(--text-white);
            font-size: 1.25rem;
            margin-bottom: 1.5rem;
            border-bottom: 2px solid var(--primary-color);
            padding-bottom: 0.5rem;
        }
        .footer-links {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.75rem;
        }
        .footer-links a {
            color: #ccc;
        }
        .footer-links a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 0.75rem 1rem;
            border-radius: var(--radius);
            margin-bottom: 0.75rem;
            border-left: 3px solid var(--primary-color);
        }
        friend-link a {
            color: var(--secondary-color);
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.25rem; }
            h2 { font-size: 1.75rem; }
            h3 { font-size: 1.5rem; }
            .article-content { padding: 2rem; }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
                order: 2;
            }
            .main-nav {
                order: 3;
                width: 100%;
                margin-top: 1rem;
                display: none;
            }
            .main-nav.active {
                display: block;
            }
            .nav-links {
                flex-direction: column;
                gap: 0;
                width: 100%;
            }
            .nav-links li {
                width: 100%;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }
            .nav-links a {
                display: block;
                padding: 1rem 0;
            }
            .article-content {
                padding: 1.5rem;
            }
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.75rem;
            }
            .footer-content {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }
        @media (max-width: 576px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.5rem; }
            .container { padding: 0 1rem; }
            .interactive-module { padding: 1.5rem; }
            .btn { width: 100%; }
        }
        @media print {
            .site-header, .breadcrumb, .interactive-module, .site-footer {
                display: none;
            }
            body {
                background-color: white;
                color: black;
            }
            .article-content {
                box-shadow: none;
                padding: 0;
            }
            a {
                color: black;
                text-decoration: underline;
            }
        }