* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #2c3e50;
            --secondary: #e74c3c;
            --accent: #3498db;
            --light: #ecf0f1;
            --dark: #2c3e50;
            --text: #333;
            --text-light: #7f8c8d;
            --border: #bdc3c7;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
            --radius: 8px;
            --max-width: 1200px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background-color: #f9f9f9;
            font-size: 18px;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        h1, h2, h3, h4 {
            color: var(--primary);
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 0.5rem;
            margin-top: 1.5rem;
        }
        h2 {
            font-size: 2.2rem;
            margin-top: 2.5rem;
            color: #2980b9;
        }
        h3 {
            font-size: 1.8rem;
            margin-top: 2rem;
            color: #16a085;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
            text-decoration: underline;
        }
        .site-header {
            background-color: var(--primary);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            color: white;
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
        }
        .logo i {
            color: var(--secondary);
            margin-right: 10px;
            font-size: 2.5rem;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
        }
        .main-nav li {
            margin-left: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            text-decoration: none;
            color: var(--secondary);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 3px;
            bottom: 0;
            left: 0;
            background-color: var(--secondary);
            transition: var(--transition);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            cursor: pointer;
            font-size: 1.8rem;
            color: white;
        }
        .breadcrumb {
            background-color: var(--light);
            padding: 1rem 0;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            margin-right: 0.5rem;
            font-size: 0.95rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin-left: 0.5rem;
            color: var(--text-light);
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 3rem auto;
        }
        .main-content {
            background: white;
            padding: 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .search-box {
            margin-bottom: 2rem;
            padding: 1.5rem;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: var(--radius);
            color: white;
        }
        .search-box h3 {
            color: white;
            margin-top: 0;
            font-size: 1.5rem;
        }
        .search-form {
            display: flex;
            margin-top: 1rem;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.8rem 1rem;
            border: none;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
        }
        .search-btn {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            font-weight: bold;
            transition: var(--transition);
        }
        .search-btn:hover {
            background: #c0392b;
        }
        .user-interaction {
            margin: 3rem 0;
            padding: 2rem;
            background: #f8f9fa;
            border-radius: var(--radius);
            border-left: 5px solid var(--accent);
        }
        .rating-section, .comment-section {
            margin-bottom: 2rem;
        }
        .stars {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #f1c40f;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        label {
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark);
        }
        input, textarea, select {
            padding: 0.8rem 1rem;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            font-size: 1rem;
            font-family: inherit;
        }
        textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background: var(--accent);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: var(--radius);
            cursor: pointer;
            font-weight: bold;
            font-size: 1.1rem;
            transition: var(--transition);
            align-self: flex-start;
        }
        .submit-btn:hover {
            background: #2980b9;
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(52, 152, 219, 0.3);
        }
        .featured-image {
            margin: 2rem 0;
            text-align: center;
        }
        .featured-image img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 5px solid white;
        }
        .image-caption {
            font-style: italic;
            color: var(--text-light);
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .highlight-box {
            background: #fffde7;
            border-left: 4px solid #f1c40f;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .tip {
            background: #e8f6f3;
            border-left: 4px solid #1abc9c;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .warning {
            background: #ffebee;
            border-left: 4px solid #e74c3c;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        strong {
            color: var(--primary);
            font-weight: 800;
        }
        em {
            color: var(--secondary);
            font-style: italic;
        }
        .rules-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            border-radius: var(--radius);
            overflow: hidden;
        }
        .rules-table th, .rules-table td {
            padding: 1rem;
            text-align: left;
            border-bottom: 1px solid var(--border);
        }
        .rules-table th {
            background: var(--primary);
            color: white;
            font-weight: 600;
        }
        .rules-table tr:nth-child(even) {
            background: #f8f9fa;
        }
        .rules-table tr:hover {
            background: #e3f2fd;
        }
        .long-tail-links {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
            margin: 3rem 0;
        }
        .web-link {
            background: white;
            padding: 1.2rem;
            border-radius: var(--radius);
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            border-left: 4px solid var(--accent);
        }
        .site-footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
            border-bottom: 2px solid var(--secondary);
            padding-bottom: 0.5rem;
            display: inline-block;
        }
        .footer-section ul {
            list-style: none;
        }
        .footer-section li {
            margin-bottom: 0.8rem;
        }
        .footer-section a {
            color: #bdc3c7;
        }
        .footer-section a:hover {
            color: white;
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #34495e;
            color: #95a5a6;
            font-size: 0.9rem;
        }
        @media (max-width: 1024px) {
            .content-wrapper {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .sidebar {
                position: static;
            }
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .header-container {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            .main-nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease;
            }
            .main-nav.active {
                max-height: 300px;
                margin-top: 1rem;
            }
            .main-nav ul {
                flex-direction: column;
            }
            .main-nav li {
                margin: 0.5rem 0;
            }
            .main-nav a {
                display: block;
                padding: 0.8rem 0;
            }
            .long-tail-links {
                grid-template-columns: 1fr;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
            .main-content {
                padding: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            body {
                font-size: 16px;
            }
            .container {
                padding: 0 15px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-input {
                border-radius: var(--radius);
                margin-bottom: 0.5rem;
            }
            .search-btn {
                border-radius: var(--radius);
                padding: 0.8rem;
            }
        }
        @media print {
            .site-header, .sidebar, .user-interaction, .site-footer {
                display: none;
            }
            body {
                font-size: 12pt;
                background: white;
                color: black;
            }
            .main-content {
                box-shadow: none;
                padding: 0;
            }
            a {
                color: black;
                text-decoration: underline;
            }
        }