:root {
            --primary-green: #6aaa64;
            --secondary-yellow: #c9b458;
            --dark-gray: #787c7e;
            --light-gray: #d3d6da;
            --bg-white: #ffffff;
            --text-dark: #121212;
            --text-light: #f8f9fa;
            --accent-blue: #4a8fe7;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --border-radius: 8px;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: var(--bg-white);
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--accent-blue);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary-green);
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }
        .site-header {
            background-color: var(--bg-white);
            border-bottom: 2px solid var(--light-gray);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: var(--spacing-sm) 0;
        }
        .my-logo {
            font-family: Georgia, serif;
            font-size: 2.2rem;
            font-weight: bold;
            color: var(--primary-green);
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
        }
        .my-logo i {
            color: var(--secondary-yellow);
        }
        .my-logo:hover {
            text-decoration: none;
            color: var(--primary-green);
        }
        .main-nav {
            display: flex;
            gap: var(--spacing-md);
        }
        .nav-link {
            font-weight: 600;
            color: var(--dark-gray);
            padding: var(--spacing-xs) var(--spacing-sm);
            border-radius: var(--border-radius);
        }
        .nav-link:hover {
            background-color: var(--light-gray);
            text-decoration: none;
        }
        .nav-link.active {
            background-color: var(--primary-green);
            color: var(--text-light);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: var(--dark-gray);
            cursor: pointer;
        }
        .search-form-header {
            display: flex;
            border: 2px solid var(--light-gray);
            border-radius: 50px;
            overflow: hidden;
            background: white;
        }
        .search-input {
            padding: 0.7rem 1rem;
            border: none;
            outline: none;
            flex-grow: 1;
            min-width: 200px;
        }
        .search-button {
            background: var(--primary-green);
            color: white;
            border: none;
            padding: 0 1.2rem;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-button:hover {
            background: var(--secondary-yellow);
        }
        .breadcrumb {
            padding: var(--spacing-sm) 0;
            background-color: #f9f9f9;
            font-size: 0.9rem;
            color: var(--dark-gray);
            border-bottom: 1px solid var(--light-gray);
        }
        .breadcrumb a {
            color: var(--dark-gray);
        }
        main {
            flex: 1;
            padding: var(--spacing-md) 0;
        }
        .article-header {
            text-align: center;
            margin-bottom: var(--spacing-lg);
            padding-bottom: var(--spacing-md);
            border-bottom: 3px dotted var(--light-gray);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--text-dark);
            margin-bottom: var(--spacing-sm);
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: var(--spacing-md);
            color: var(--dark-gray);
            font-size: 0.95rem;
            margin-top: var(--spacing-sm);
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: var(--spacing-lg);
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            font-size: 1.1rem;
        }
        .article-content h2 {
            font-size: 2rem;
            margin: var(--spacing-lg) 0 var(--spacing-sm);
            color: var(--primary-green);
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--secondary-yellow);
        }
        .article-content h3 {
            font-size: 1.6rem;
            margin: var(--spacing-md) 0 var(--spacing-xs);
            color: var(--dark-gray);
        }
        .article-content h4 {
            font-size: 1.3rem;
            margin: var(--spacing-sm) 0 var(--spacing-xs);
            color: var(--accent-blue);
        }
        .article-content p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .article-content strong {
            color: var(--primary-green);
            font-weight: 700;
        }
        .article-content em {
            background-color: #fffacd;
            font-style: italic;
            padding: 0 2px;
        }
        .highlight-box {
            background-color: #f0f9ff;
            border-left: 5px solid var(--accent-blue);
            padding: var(--spacing-md);
            margin: var(--spacing-md) 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .wordle-grid-example {
            display: grid;
            grid-template-columns: repeat(5, 60px);
            gap: 8px;
            margin: var(--spacing-md) auto;
            justify-content: center;
        }
        .wordle-cell {
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            font-weight: bold;
            border: 2px solid var(--light-gray);
            border-radius: var(--border-radius);
            text-transform: uppercase;
        }
        .cell-correct {
            background-color: var(--primary-green);
            color: white;
            border-color: var(--primary-green);
        }
        .cell-present {
            background-color: var(--secondary-yellow);
            color: white;
            border-color: var(--secondary-yellow);
        }
        .cell-absent {
            background-color: var(--dark-gray);
            color: white;
            border-color: var(--dark-gray);
        }
        .featured-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin: var(--spacing-md) auto;
            display: block;
        }
        .side-panel {
            background-color: #f8f9fa;
            padding: var(--spacing-md);
            border-radius: var(--border-radius);
            align-self: start;
            position: sticky;
            top: 120px;
            box-shadow: var(--shadow);
        }
        .side-panel h3 {
            color: var(--primary-green);
            margin-bottom: var(--spacing-sm);
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--light-gray);
        }
        .related-links {
            list-style: none;
            margin-top: var(--spacing-sm);
        }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-left: 1rem;
            position: relative;
        }
        .related-links li:before {
            content: '🔗';
            position: absolute;
            left: -0.5rem;
        }
        .interactive-module {
            background-color: white;
            border: 2px solid var(--light-gray);
            border-radius: var(--border-radius);
            padding: var(--spacing-md);
            margin: var(--spacing-lg) 0;
            box-shadow: var(--shadow);
        }
        .module-title {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            color: var(--primary-green);
            margin-bottom: var(--spacing-md);
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            margin: var(--spacing-sm) 0;
        }
        .star {
            font-size: 1.8rem;
            color: var(--light-gray);
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: var(--secondary-yellow);
        }
        .form-group {
            margin-bottom: var(--spacing-sm);
        }
        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-input,
        .form-textarea {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid var(--light-gray);
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .form-input:focus,
        .form-textarea:focus {
            outline: none;
            border-color: var(--primary-green);
        }
        .form-textarea {
            min-height: 120px;
            resize: vertical;
        }
        .btn {
            display: inline-block;
            background-color: var(--primary-green);
            color: white;
            padding: 0.8rem 1.8rem;
            border: none;
            border-radius: 50px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
        }
        .btn:hover {
            background-color: var(--secondary-yellow);
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.1);
        }
        .btn-block {
            width: 100%;
        }
        .site-footer {
            background-color: #2c3e50;
            color: var(--text-light);
            padding: var(--spacing-lg) 0 var(--spacing-md);
            margin-top: var(--spacing-lg);
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--spacing-lg);
        }
        .footer-section h3 {
            color: var(--secondary-yellow);
            margin-bottom: var(--spacing-sm);
            font-size: 1.3rem;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: var(--spacing-sm);
        }
        .friend-link {
            background-color: rgba(255,255,255,0.1);
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            transition: background 0.3s;
        }
        .friend-link:hover {
            background-color: rgba(255,255,255,0.2);
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            padding-top: var(--spacing-md);
            margin-top: var(--spacing-md);
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #bdc3c7;
        }
        @media (max-width: 768px) {
            html {
                font-size: 14px;
            }
            h1 {
                font-size: 2.2rem;
            }
            .header-container {
                flex-wrap: wrap;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                order: 3;
                margin-top: var(--spacing-sm);
                background-color: var(--bg-white);
                border-top: 1px solid var(--light-gray);
                padding: var(--spacing-sm) 0;
            }
            .main-nav.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .search-form-header {
                order: 2;
                margin-top: var(--spacing-sm);
                width: 100%;
            }
            .article-meta {
                flex-direction: column;
                align-items: center;
                gap: var(--spacing-xs);
            }
            .wordle-grid-example {
                grid-template-columns: repeat(5, 50px);
            }
            .wordle-cell {
                width: 50px;
                height: 50px;
                font-size: 1.7rem;
            }
            .side-panel {
                position: static;
            }
        }
        @media print {
            .site-header,
            .side-panel,
            .interactive-module,
            .site-footer {
                display: none;
            }
            .content-grid {
                grid-template-columns: 1fr;
            }
            body {
                font-size: 12pt;
                line-height: 1.5;
            }
            a {
                color: black;
                text-decoration: underline;
            }
        }