:root {
            --primary: #2c3e50;
            --secondary: #e67e22;
            --accent: #16a085;
            --light: #ecf0f1;
            --dark: #2c3e50;
            --gray: #95a5a6;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
            line-height: 1.6;
        }
        body {
            background-color: #f9f9f9;
            color: #333;
            overflow-x: hidden;
        }
        header {
            background-color: var(--primary);
            color: white;
            padding: 1rem 5%;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
        }
        .logo {
            font-size: 2rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--secondary);
        }
        .logo span {
            color: var(--secondary);
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 992px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-desktop a:hover {
            background-color: var(--secondary);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 992px) {
            .hamburger {
                display: block;
            }
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: var(--dark);
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem 5%;
            z-index: 999;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: white;
            text-decoration: none;
            padding: 1rem 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            font-weight: 600;
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            background-color: var(--light);
            padding: 1rem 5%;
            font-size: 0.9rem;
            border-bottom: 1px solid #ddd;
        }
        .breadcrumb a {
            color: var(--secondary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            max-width: 1400px;
            margin: 0 auto;
            padding: 2rem 5%;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        .article-container {
            background-color: white;
            border-radius: 8px;
            box-shadow: var(--shadow);
            padding: 2.5rem;
        }
        h1 {
            color: var(--primary);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 1rem;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
        }
        h2 {
            color: var(--primary);
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--light);
        }
        h3 {
            color: var(--accent);
            font-size: 1.5rem;
            margin: 2rem 0 1rem;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #eee;
            color: var(--gray);
            font-size: 0.9rem;
        }
        .author {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .author img {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            object-fit: cover;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            line-height: 1.8;
        }
        .highlight {
            background-color: #fff9e6;
            border-left: 4px solid var(--secondary);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 4px 4px 0;
        }
        .setup-image-container {
            text-align: center;
            margin: 3rem 0;
            padding: 1.5rem;
            background-color: #f8f9fa;
            border-radius: 8px;
            border: 1px solid #e9ecef;
        }
        .setup-image {
            max-width: 100%;
            height: auto;
            border-radius: 6px;
            box-shadow: 0 6px 15px rgba(0,0,0,0.1);
            margin-bottom: 1.5rem;
            transition: transform 0.5s ease;
        }
        .setup-image:hover {
            transform: scale(1.02);
        }
        .image-caption {
            font-style: italic;
            color: var(--gray);
            font-size: 0.95rem;
        }
        ul, ol {
            margin-left: 1.5rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.8rem;
            line-height: 1.7;
        }
        .terminology {
            background-color: #f0f7ff;
            border-radius: 8px;
            padding: 1.5rem;
            margin: 2rem 0;
            border-left: 4px solid var(--accent);
        }
        .terminology h3 {
            margin-top: 0;
        }
        .term {
            font-weight: bold;
            color: var(--primary);
        }
        blockquote {
            font-style: italic;
            padding: 1.5rem 2rem;
            background-color: #f8f9fa;
            border-radius: 8px;
            margin: 2rem 0;
            border-left: 5px solid var(--secondary);
            color: #555;
        }
        .quote-author {
            text-align: right;
            font-weight: bold;
            margin-top: 1rem;
            color: var(--primary);
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2.5rem 0;
            box-shadow: 0 0 10px rgba(0,0,0,0.05);
        }
        .comparison-table th {
            background-color: var(--primary);
            color: white;
            padding: 1rem;
            text-align: left;
        }
        .comparison-table td {
            padding: 1rem;
            border-bottom: 1px solid #eee;
        }
        .comparison-table tr:nth-child(even) {
            background-color: #f9f9f9;
        }
        .comparison-table tr:hover {
            background-color: #f1f7ff;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background-color: white;
            border-radius: 8px;
            padding: 1.5rem;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            margin-top: 0;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--light);
        }
        .search-form {
            display: flex;
            margin-bottom: 1rem;
        }
        .search-input {
            flex: 1;
            padding: 0.8rem;
            border: 1px solid #ddd;
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-button {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-button:hover {
            background-color: #d35400;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 1.5rem 0;
            font-size: 1.8rem;
            color: #ffd700;
        }
        .star {
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover {
            transform: scale(1.2);
        }
        .rating-button {
            background-color: var(--accent);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            width: 100%;
        }
        .rating-button:hover {
            background-color: #138d75;
        }
        .comment-form textarea {
            width: 100%;
            padding: 1rem;
            border: 1px solid #ddd;
            border-radius: 4px;
            margin-bottom: 1rem;
            resize: vertical;
            min-height: 120px;
            font-size: 1rem;
        }
        .comment-submit {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            width: 100%;
        }
        .comment-submit:hover {
            background-color: #1a252f;
        }
        .related-links {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .related-links a {
            color: var(--primary);
            text-decoration: none;
            padding: 0.5rem 0;
            border-bottom: 1px dashed #eee;
            transition: var(--transition);
        }
        .related-links a:hover {
            color: var(--secondary);
            padding-left: 5px;
        }
        .longtail-links {
            background-color: var(--light);
            padding: 2.5rem 5%;
            margin-top: 3rem;
            border-top: 1px solid #ddd;
            border-bottom: 1px solid #ddd;
        }
        .links-container {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 1.5rem;
            max-width: 1400px;
            margin: 0 auto;
        }
        @media (max-width: 1200px) {
            .links-container {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (max-width: 768px) {
            .links-container {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        .web-link {
            background-color: white;
            padding: 1.2rem;
            border-radius: 6px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 12px rgba(0,0,0,0.1);
        }
        .web-link a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            display: block;
            transition: var(--transition);
        }
        .web-link a:hover {
            color: var(--secondary);
        }
        footer {
            background-color: var(--primary);
            color: white;
            padding: 2.5rem 5%;
            text-align: center;
        }
        .footer-content {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1.5rem;
        }
        .copyright {
            color: #bdc3c7;
            font-size: 0.9rem;
            margin-top: 1rem;
        }
        .social-links {
            display: flex;
            gap: 1.5rem;
            margin: 1rem 0;
        }
        .social-links a {
            color: white;
            font-size: 1.3rem;
            transition: var(--transition);
        }
        .social-links a:hover {
            color: var(--secondary);
            transform: translateY(-3px);
        }
        .back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background-color: var(--secondary);
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 99;
            box-shadow: 0 3px 10px rgba(0,0,0,0.2);
        }
        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background-color: #d35400;
            transform: translateY(-5px);
        }
        @media (max-width: 768px) {
            .article-container, .sidebar-widget {
                padding: 1.5rem;
            }
            .header-container, .breadcrumb, main, .longtail-links, footer {
                padding-left: 4%;
                padding-right: 4%;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 1rem;
            }
        }