* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary-green: #6aaa64;
            --secondary-yellow: #c9b458;
            --dark-gray: #787c7e;
            --light-gray: #d3d6da;
            --bg-white: #ffffff;
            --text-dark: #1a1a1b;
            --accent-blue: #3858a3;
            --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-content-width: 1200px;
        }
        body {
            background-color: #f9f9f9;
            color: var(--text-dark);
            line-height: 1.7;
            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;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-content-width);
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }
        header {
            background-color: var(--bg-white);
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: var(--spacing-sm) 0;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary-green);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
            letter-spacing: -1px;
        }
        .my-logo span {
            color: var(--secondary-yellow);
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: var(--spacing-md);
        }
        .nav-links a {
            font-weight: 600;
            font-size: 1.05rem;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-links a:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--primary-green);
            transition: width 0.3s ease;
        }
        .nav-links a:hover:after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: var(--text-dark);
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #f0f0f0;
            padding: var(--spacing-xs) 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child):after {
            content: '>';
            margin: 0 10px;
            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: 2px solid var(--light-gray);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--text-dark);
            margin-bottom: var(--spacing-sm);
            line-height: 1.2;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
        }
        .article-meta {
            color: var(--dark-gray);
            font-style: italic;
            margin-top: var(--spacing-sm);
        }
        .content-section {
            margin-bottom: var(--spacing-lg);
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-green);
            margin: var(--spacing-md) 0 var(--spacing-sm);
            padding-bottom: 0.5rem;
            border-bottom: 1px dashed var(--light-gray);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--accent-blue);
            margin: var(--spacing-sm) 0;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--secondary-yellow);
            margin: 1rem 0 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .highlight-box {
            background-color: #f0f7f0;
            border-left: 5px solid var(--primary-green);
            padding: var(--spacing-sm);
            margin: var(--spacing-md) 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .image-container {
            margin: var(--spacing-md) 0;
            text-align: center;
        }
        .image-container img {
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin: 0 auto;
        }
        .image-caption {
            font-size: 0.9rem;
            color: var(--dark-gray);
            margin-top: 0.5rem;
            font-style: italic;
        }
        .interactive-module {
            background: white;
            border-radius: var(--border-radius);
            padding: var(--spacing-md);
            box-shadow: var(--shadow);
            margin: var(--spacing-md) 0;
        }
        .module-title {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--accent-blue);
            margin-bottom: var(--spacing-sm);
        }
        .module-title i {
            font-size: 1.5rem;
        }
        form {
            display: grid;
            gap: 1rem;
        }
        input, textarea, select {
            padding: 0.8rem;
            border: 1px solid var(--light-gray);
            border-radius: var(--border-radius);
            font-size: 1rem;
            width: 100%;
        }
        button, .btn {
            background-color: var(--primary-green);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: var(--border-radius);
            font-weight: bold;
            cursor: pointer;
            transition: background-color 0.3s ease;
            font-size: 1rem;
            display: inline-block;
            text-align: center;
        }
        button:hover, .btn:hover {
            background-color: #5a9954;
            text-decoration: none;
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            margin: 10px 0;
        }
        .star {
            font-size: 1.8rem;
            color: var(--light-gray);
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: var(--secondary-yellow);
        }
        .internal-links {
            background-color: #f8f9fa;
            padding: var(--spacing-sm);
            border-radius: var(--border-radius);
            margin: var(--spacing-md) 0;
        }
        .internal-links ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 10px;
            list-style: none;
        }
        .internal-links li {
            padding: 0.3rem 0;
        }
        footer {
            background-color: var(--text-dark);
            color: white;
            padding: var(--spacing-lg) 0 var(--spacing-md);
            margin-top: auto;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--spacing-md);
        }
        .footer-section h3 {
            color: var(--light-gray);
            font-size: 1.3rem;
            margin-bottom: var(--spacing-sm);
        }
        .footer-links {
            list-style: none;
        }
        .footer-links a {
            color: #ccc;
            display: block;
            padding: 0.3rem 0;
        }
        .footer-links a:hover {
            color: var(--primary-green);
        }
        friend-link {
            display: block;
            background: #333;
            padding: 1rem;
            border-radius: var(--border-radius);
            margin: 1rem 0;
            text-align: center;
        }
        friend-link a {
            color: var(--secondary-yellow);
            font-weight: bold;
        }
        .copyright {
            text-align: center;
            margin-top: var(--spacing-md);
            padding-top: var(--spacing-sm);
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 992px) {
            .nav-links {
                gap: var(--spacing-sm);
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                background-color: white;
                flex-direction: column;
                align-items: center;
                padding: var(--spacing-md) 0;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
                transition: left 0.3s ease;
                gap: 0;
            }
            .nav-links.active {
                left: 0;
            }
            .nav-links li {
                width: 100%;
                text-align: center;
            }
            .nav-links a {
                display: block;
                padding: 1rem;
                border-bottom: 1px solid #eee;
            }
            .nav-links a:after {
                display: none;
            }
            .header-container {
                padding: 0.8rem 0;
            }
            .my-logo {
                font-size: 1.8rem;
            }
        }