:root {
            --primary: #e67e22;
            --primary-dark: #d35400;
            --secondary: #2c3e50;
            --light: #ecf0f1;
            --dark: #2c3e50;
            --gray: #95a5a6;
            --success: #27ae60;
            --warning: #f39c12;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --border-radius: 8px;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --max-width: 1200px;
            --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --font-body: 'Georgia', 'Times New Roman', serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-body);
            line-height: 1.8;
            color: #333;
            background-color: #f9f9f9;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-dark);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: var(--primary);
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }
        .site-header {
            background-color: var(--secondary);
            color: white;
            padding: var(--spacing-sm) 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            text-decoration: none;
            color: var(--primary);
        }
        .logo-icon {
            color: var(--primary);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: var(--spacing-md);
        }
        .main-nav a {
            color: var(--light);
            font-weight: 600;
            padding: var(--spacing-xs) var(--spacing-sm);
            border-radius: var(--border-radius);
        }
        .main-nav a:hover, .main-nav a.active {
            background-color: var(--primary);
            color: white;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--light);
            padding: var(--spacing-sm);
            margin-bottom: var(--spacing-md);
            border-radius: var(--border-radius);
            font-size: 0.9rem;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin-left: 0.5rem;
            color: var(--gray);
        }
        .search-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: var(--spacing-lg) 0;
            margin-bottom: var(--spacing-lg);
            color: white;
            text-align: center;
            border-radius: var(--border-radius);
        }
        .search-section h2 {
            margin-bottom: var(--spacing-md);
            font-size: 2.2rem;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            gap: 10px;
        }
        .search-input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: none;
            border-radius: 50px;
            font-size: 1.1rem;
            outline: none;
            box-shadow: var(--shadow);
        }
        .search-button {
            background-color: var(--secondary);
            color: white;
            border: none;
            border-radius: 50px;
            padding: 0 2rem;
            font-size: 1.1rem;
            cursor: pointer;
            transition: background-color 0.3s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-button:hover {
            background-color: #1a252f;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: var(--spacing-lg);
            padding: var(--spacing-md) 0;
        }
        .article-content {
            background: white;
            padding: var(--spacing-lg);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }
        .sidebar-widget {
            background: white;
            padding: var(--spacing-md);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--secondary);
            margin-bottom: var(--spacing-sm);
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--primary);
        }
        h1, h2, h3, h4 {
            font-family: var(--font-heading);
            color: var(--secondary);
            margin-top: var(--spacing-md);
            margin-bottom: var(--spacing-sm);
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-dark);
            border-bottom: 3px solid var(--primary);
            padding-bottom: var(--spacing-sm);
        }
        h2 {
            font-size: 2.2rem;
            background: linear-gradient(to right, var(--primary), transparent);
            padding-left: 1rem;
            padding-top: 0.5rem;
            padding-bottom: 0.5rem;
            border-radius: 4px 0 0 4px;
        }
        h3 {
            font-size: 1.8rem;
            color: var(--primary);
        }
        h4 {
            font-size: 1.4rem;
            color: var(--dark);
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: bold;
            color: var(--dark);
            background-color: #fff8e1;
            padding: var(--spacing-md);
            border-left: 5px solid var(--warning);
            border-radius: var(--border-radius);
            margin-bottom: var(--spacing-md);
        }
        .highlight-box {
            background-color: #e8f4fd;
            border-left: 5px solid #3498db;
            padding: var(--spacing-md);
            margin: var(--spacing-md) 0;
            border-radius: var(--border-radius);
        }
        .tip {
            background-color: #d5f4e6;
            border-left: 5px solid var(--success);
            padding: var(--spacing-md);
            margin: var(--spacing-md) 0;
            border-radius: var(--border-radius);
        }
        .warning {
            background-color: #fdebd0;
            border-left: 5px solid var(--warning);
            padding: var(--spacing-md);
            margin: var(--spacing-md) 0;
            border-radius: var(--border-radius);
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--border-radius);
            margin: var(--spacing-md) auto;
            display: block;
            box-shadow: var(--shadow);
            transition: transform 0.5s ease;
        }
        .article-image:hover {
            transform: scale(1.02);
        }
        figcaption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        blockquote {
            font-style: italic;
            border-left: 4px solid var(--primary);
            padding-left: var(--spacing-md);
            margin: var(--spacing-md) 0;
            color: #555;
            background-color: #f9f9f9;
            padding: var(--spacing-md);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .related-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: var(--spacing-sm);
            margin: var(--spacing-lg) 0;
        }
        .related-link-item {
            background: white;
            border: 1px solid #eee;
            border-radius: var(--border-radius);
            padding: var(--spacing-sm);
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .related-link-item:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
            border-color: var(--primary);
        }
        .link-icon {
            color: var(--primary);
            font-size: 1.5rem;
        }
        .user-interaction {
            margin-top: var(--spacing-lg);
            padding-top: var(--spacing-md);
            border-top: 2px solid #eee;
        }
        .rating-section, .comment-section {
            margin-bottom: var(--spacing-lg);
        }
        .star-rating {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: #ffcc00;
        }
        .rating-form, .comment-form {
            background: #f8f9fa;
            padding: var(--spacing-md);
            border-radius: var(--border-radius);
            margin-top: var(--spacing-sm);
        }
        .form-group {
            margin-bottom: var(--spacing-sm);
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--secondary);
        }
        input[type="text"],
        input[type="email"],
        textarea {
            width: 100%;
            padding: 0.75rem;
            border: 1px solid #ccc;
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus,
        textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(230, 126, 34, 0.2);
        }
        button[type="submit"] {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0.75rem 2rem;
            border-radius: var(--border-radius);
            font-size: 1.1rem;
            cursor: pointer;
            transition: background-color 0.3s;
            font-weight: 600;
        }
        button[type="submit"]:hover {
            background-color: var(--primary-dark);
        }
        .site-footer {
            background-color: var(--secondary);
            color: var(--light);
            padding: var(--spacing-lg) 0 var(--spacing-md);
            margin-top: var(--spacing-lg);
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }
        .footer-section h3 {
            color: white;
            border-bottom: 2px solid var(--primary);
            padding-bottom: 0.5rem;
            margin-bottom: var(--spacing-sm);
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.5rem;
        }
        .footer-links a {
            color: #bdc3c7;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: inline-block;
            background: #34495e;
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 50px;
            margin: 0.25rem;
            font-size: 0.9rem;
            transition: all 0.3s;
        }
        friend-link:hover {
            background: var(--primary);
            transform: translateY(-2px);
        }
        .copyright {
            text-align: center;
            padding-top: var(--spacing-md);
            border-top: 1px solid #4a6572;
            color: #bdc3c7;
            font-size: 0.9rem;
        }
        .last-updated {
            background-color: #fff8e1;
            padding: var(--spacing-sm);
            border-radius: var(--border-radius);
            margin: var(--spacing-md) 0;
            text-align: center;
            font-style: italic;
            color: #7d6608;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            .sidebar {
                order: -1;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: var(--secondary);
                padding: var(--spacing-sm);
                box-shadow: var(--shadow);
                border-radius: 0 0 var(--border-radius) var(--border-radius);
            }
            .main-nav.active ul {
                display: flex;
            }
            .search-form {
                flex-direction: column;
            }
            .search-button {
                justify-content: center;
                padding: 1rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }