:root {
            --primary: #6a0dad;
            --secondary: #ffcc00;
            --accent: #ff6600;
            --dark: #1a1a2e;
            --light: #f8f9fa;
            --gray: #6c757d;
            --success: #28a745;
            --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            line-height: 1.7;
            color: #333;
            background-color: var(--light);
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: var(--accent);
        }
        .site-header {
            background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
            color: white;
            padding: 1rem 2rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--secondary);
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            font-size: 2.5rem;
        }
        .my-logo:hover {
            color: white;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:after {
            content: '';
            position: absolute;
            width: 0;
            height: 3px;
            bottom: 0;
            left: 0;
            background-color: var(--secondary);
            transition: width 0.3s ease;
        }
        .main-nav a:hover:after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            color: var(--gray);
            border-bottom: 1px solid #dee2e6;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb span {
            margin: 0 0.5rem;
            color: var(--gray);
        }
        .main-container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 2rem;
            flex: 1;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .main-container {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.08);
        }
        .article-meta {
            color: var(--gray);
            font-size: 0.9rem;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px dashed #dee2e6;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        h1 {
            color: var(--dark);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 6px solid var(--secondary);
            padding-left: 1.5rem;
        }
        h2 {
            color: var(--primary);
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem 0;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #f0f0f0;
        }
        h3 {
            color: var(--dark);
            font-size: 1.6rem;
            margin: 2rem 0 1rem 0;
        }
        h4 {
            color: var(--accent);
            font-size: 1.3rem;
            margin: 1.5rem 0 0.8rem 0;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            color: var(--dark);
            background: linear-gradient(to right, #f8f9fa, #ffffff);
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid var(--primary);
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fff9e6;
            padding: 1.5rem;
            border-radius: 10px;
            border: 1px solid var(--secondary);
            margin: 2rem 0;
            position: relative;
        }
        .highlight:before {
            content: '💡';
            position: absolute;
            left: -15px;
            top: -15px;
            background: white;
            border-radius: 50%;
            padding: 5px;
            font-size: 1.5rem;
            border: 2px solid var(--secondary);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: 0 4px 8px rgba(0,0,0,0.05);
        }
        .data-table th, .data-table td {
            border: 1px solid #dee2e6;
            padding: 1rem;
            text-align: center;
        }
        .data-table th {
            background-color: var(--primary);
            color: white;
            font-weight: 600;
        }
        .data-table tr:nth-child(even) {
            background-color: #f8f9fa;
        }
        .data-table tr:hover {
            background-color: #e9ecef;
        }
        .feature-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 12px;
            margin: 2rem 0;
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
            border: 3px solid white;
            outline: 1px solid #dee2e6;
        }
        .internal-links {
            background-color: #f0f7ff;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .internal-links h4 {
            color: var(--primary);
            margin-top: 0;
        }
        .internal-links ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .internal-links li {
            background: white;
            padding: 0.7rem 1.2rem;
            border-radius: 50px;
            border: 1px solid #cce5ff;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .widget h3 {
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #f0f0f0;
        }
        .search-box {
            display: flex;
        }
        .search-box input {
            flex: 1;
            padding: 0.9rem 1rem;
            border: 2px solid #dee2e6;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
            outline: none;
        }
        .search-box input:focus {
            border-color: var(--primary);
        }
        .search-box button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s;
        }
        .search-box button:hover {
            background: var(--accent);
        }
        .rating-widget form, .comment-widget form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .rating-widget .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ffcc00;
            direction: rtl;
        }
        .rating-widget .stars input {
            display: none;
        }
        .rating-widget .stars label {
            cursor: pointer;
        }
        .rating-widget .stars input:checked ~ label,
        .rating-widget .stars label:hover,
        .rating-widget .stars label:hover ~ label {
            color: #ffcc00;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-group label {
            font-weight: 600;
            color: var(--dark);
        }
        .form-group input, .form-group textarea, .form-group select {
            padding: 0.8rem 1rem;
            border: 2px solid #dee2e6;
            border-radius: 8px;
            font-family: var(--font-main);
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-group input:focus, .form-group textarea:focus, .form-group select:focus {
            outline: none;
            border-color: var(--primary);
        }
        .submit-btn {
            background: linear-gradient(to right, var(--primary), #8a2be2);
            color: white;
            border: none;
            padding: 1rem 1.5rem;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s;
            margin-top: 0.5rem;
        }
        .submit-btn:hover {
            background: linear-gradient(to right, var(--accent), #ff4500);
            transform: translateY(-2px);
            box-shadow: 0 5px 12px rgba(255, 102, 0, 0.3);
        }
        .site-footer {
            background: var(--dark);
            color: white;
            padding: 3rem 2rem 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--secondary);
            margin-bottom: 1rem;
        }
        .footer-links h4 {
            color: white;
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            position: relative;
        }
        .footer-links h4:after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -8px;
            width: 40px;
            height: 3px;
            background-color: var(--secondary);
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #cccccc;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: var(--secondary);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        friend-link a {
            color: #cccccc;
            margin-right: 1rem;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
            grid-column: 1 / -1;
        }
        @media (max-width: 768px) {
            .main-nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--dark);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem 2rem;
                box-shadow: 0 10px 15px rgba(0,0,0,0.2);
            }
            .main-nav.active ul {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .main-container {
                padding: 0 1rem;
            }
            .article-content {
                padding: 1.5rem;
            }
            .internal-links ul {
                flex-direction: column;
            }
            .internal-links li {
                width: 100%;
            }
        }
        .tab-container {
            margin: 2.5rem 0;
        }
        .tabs {
            display: flex;
            border-bottom: 2px solid #dee2e6;
            overflow-x: auto;
        }
        .tab {
            padding: 1rem 1.8rem;
            background: none;
            border: none;
            font-weight: 600;
            font-size: 1.1rem;
            color: var(--gray);
            cursor: pointer;
            white-space: nowrap;
            position: relative;
            transition: color 0.3s;
        }
        .tab:hover {
            color: var(--primary);
        }
        .tab.active {
            color: var(--primary);
        }
        .tab.active:after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--primary);
        }
        .tab-content {
            display: none;
            padding: 2rem;
            background: #f8f9fa;
            border-radius: 0 0 10px 10px;
            animation: fadeIn 0.5s ease;
        }
        .tab-content.active {
            display: block;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .comparison-chart {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2.5rem 0;
        }
        .comparison-card {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            box-shadow: 0 6px 15px rgba(0,0,0,0.08);
            border-top: 5px solid var(--primary);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .comparison-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 25px rgba(0,0,0,0.12);
        }
        .comparison-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        @media (max-width: 768px) {
            .comparison-chart {
                grid-template-columns: 1fr;
            }
        }
        .tooltip {
            position: relative;
            display: inline-block;
            border-bottom: 1px dotted var(--primary);
            cursor: help;
        }
        .tooltip .tooltiptext {
            visibility: hidden;
            width: 250px;
            background-color: var(--dark);
            color: white;
            text-align: center;
            border-radius: 6px;
            padding: 1rem;
            position: absolute;
            z-index: 1;
            bottom: 125%;
            left: 50%;
            transform: translateX(-50%);
            opacity: 0;
            transition: opacity 0.3s;
            font-size: 0.9rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.2);
        }
        .tooltip:hover .tooltiptext {
            visibility: visible;
            opacity: 1;
        }
        .tooltip .tooltiptext:after {
            content: "";
            position: absolute;
            top: 100%;
            left: 50%;
            margin-left: -8px;
            border-width: 8px;
            border-style: solid;
            border-color: var(--dark) transparent transparent transparent;
        }
        .vote-buttons {
            display: flex;
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .vote-btn {
            flex: 1;
            padding: 1rem;
            border: 2px solid #dee2e6;
            background: white;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .vote-btn:hover {
            transform: scale(1.03);
        }
        .vote-yes:hover {
            background-color: #d4edda;
            border-color: #c3e6cb;
            color: #155724;
        }
        .vote-no:hover {
            background-color: #f8d7da;
            border-color: #f5c6cb;
            color: #721c24;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-box {
            background: linear-gradient(135deg, #f0f7ff, #ffffff);
            padding: 1.5rem;
            border-radius: 10px;
            text-align: center;
            border: 1px solid #cce5ff;
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 0.5rem;
        }
        .stat-label {
            font-size: 0.95rem;
            color: var(--gray);
            font-weight: 600;
        }