:root {
            --primary: #2c3e50;
            --secondary: #e74c3c;
            --accent: #3498db;
            --light: #ecf0f1;
            --dark: #1a252f;
            --gray: #95a5a6;
            --success: #27ae60;
            --warning: #f39c12;
            --shadow: 0 4px 6px rgba(0,0,0,0.1);
            --radius: 8px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
            min-height: 100vh;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: rgba(26, 37, 47, 0.95);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 3px solid var(--secondary);
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        .logo {
            font-family: 'Impact', sans-serif;
            font-size: 2.2rem;
            background: linear-gradient(45deg, var(--secondary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-decoration: none;
            font-weight: 900;
            letter-spacing: 1px;
            transition: transform 0.3s ease;
        }
        .logo:hover {
            transform: scale(1.05);
        }
        .logo span {
            color: var(--light);
        }
        nav {
            display: flex;
            align-items: center;
            gap: 2rem;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.5rem;
        }
        .nav-links a {
            color: var(--light);
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
            transition: all 0.3s ease;
            position: relative;
        }
        .nav-links a:hover {
            background: var(--secondary);
            transform: translateY(-2px);
        }
        .nav-links a:after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width 0.3s ease;
        }
        .nav-links a:hover:after {
            width: 80%;
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
        }
        .search-input {
            padding: 0.7rem 1rem;
            border: 2px solid var(--accent);
            border-radius: var(--radius);
            background: rgba(255,255,255,0.1);
            color: var(--light);
            min-width: 250px;
            transition: all 0.3s ease;
        }
        .search-input:focus {
            outline: none;
            border-color: var(--secondary);
            box-shadow: 0 0 15px rgba(231, 76, 60, 0.3);
            background: rgba(255,255,255,0.15);
        }
        .search-btn {
            background: var(--accent);
            color: white;
            border: none;
            padding: 0.7rem 1.5rem;
            border-radius: var(--radius);
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: 600;
        }
        .search-btn:hover {
            background: var(--secondary);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(231, 76, 60, 0.4);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background: var(--light);
            border-radius: 2px;
            transition: 0.3s;
        }
        .breadcrumb {
            background: rgba(44, 62, 80, 0.7);
            padding: 1rem;
            border-radius: var(--radius);
            margin: 1rem 0;
            color: var(--light);
        }
        .breadcrumb a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .breadcrumb a:hover {
            color: var(--secondary);
            text-decoration: underline;
        }
        main {
            background: rgba(255, 255, 255, 0.97);
            border-radius: var(--radius);
            margin: 2rem auto;
            padding: 3rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
            position: relative;
            overflow: hidden;
        }
        main:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 5px;
            background: linear-gradient(90deg, var(--secondary), var(--accent), var(--success));
        }
        article {
            max-width: 900px;
            margin: 0 auto;
        }
        h1 {
            font-size: 3rem;
            color: var(--dark);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-align: center;
            background: linear-gradient(45deg, var(--secondary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            padding-bottom: 1rem;
            border-bottom: 3px solid var(--light);
        }
        h2 {
            font-size: 2.2rem;
            color: var(--primary);
            margin: 3rem 0 1.5rem;
            padding-left: 1rem;
            border-left: 5px solid var(--secondary);
            background: linear-gradient(to right, rgba(231, 76, 60, 0.1), transparent);
        }
        h3 {
            font-size: 1.8rem;
            color: var(--accent);
            margin: 2.5rem 0 1rem;
            position: relative;
        }
        h3:before {
            content: '▶';
            color: var(--secondary);
            margin-right: 10px;
            font-size: 1.2rem;
        }
        p {
            margin-bottom: 1.8rem;
            text-align: justify;
            font-size: 1.1rem;
            color: #444;
            line-height: 1.9;
        }
        .highlight {
            background: linear-gradient(120deg, rgba(52, 152, 219, 0.2) 0%, rgba(52, 152, 219, 0) 100%);
            padding: 2rem;
            border-radius: var(--radius);
            border-left: 4px solid var(--accent);
            margin: 2rem 0;
            position: relative;
        }
        .highlight:before {
            content: '💡';
            position: absolute;
            top: -15px;
            left: -15px;
            font-size: 2rem;
            background: white;
            border-radius: 50%;
            padding: 5px;
            box-shadow: var(--shadow);
        }
        .important {
            font-weight: 800;
            color: var(--secondary);
            font-size: 1.2rem;
        }
        .term {
            color: var(--accent);
            font-weight: 700;
            border-bottom: 2px dotted var(--accent);
            cursor: help;
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--radius);
            margin: 2.5rem auto;
            display: block;
            box-shadow: 0 10px 25px rgba(0,0,0,0.2);
            transition: transform 0.5s ease, box-shadow 0.5s ease;
            border: 5px solid white;
            outline: 2px solid var(--accent);
        }
        .article-image:hover {
            transform: scale(1.02);
            box-shadow: 0 15px 35px rgba(0,0,0,0.3);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .interactive-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 4rem 0;
        }
        .feature-card {
            background: white;
            border-radius: var(--radius);
            padding: 2rem;
            box-shadow: var(--shadow);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border-top: 4px solid var(--accent);
            position: relative;
            overflow: hidden;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.15);
        }
        .feature-card h3 {
            color: var(--primary);
            margin-top: 0;
            font-size: 1.5rem;
        }
        .feature-card:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(45deg, transparent 30%, rgba(52, 152, 219, 0.05) 100%);
            z-index: 1;
        }
        .comment-section {
            background: var(--light);
            border-radius: var(--radius);
            padding: 2.5rem;
            margin: 4rem 0;
            border: 2px solid rgba(52, 152, 219, 0.2);
        }
        .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
            margin-top: 2rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-group label {
            font-weight: 600;
            color: var(--primary);
        }
        .form-control {
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: var(--radius);
            font-size: 1rem;
            transition: all 0.3s ease;
        }
        .form-control:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 10px rgba(52, 152, 219, 0.2);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
            font-family: inherit;
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            font-size: 2rem;
            color: var(--gray);
            cursor: pointer;
            margin: 1rem 0;
        }
        .star-rating i {
            transition: all 0.3s ease;
        }
        .star-rating i:hover,
        .star-rating i:hover ~ i {
            color: var(--gray);
        }
        .star-rating i.active {
            color: var(--warning);
        }
        .submit-btn {
            background: linear-gradient(45deg, var(--accent), var(--success));
            color: white;
            border: none;
            padding: 1.2rem 2rem;
            border-radius: var(--radius);
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 700;
            transition: all 0.3s ease;
            align-self: flex-start;
        }
        .submit-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(52, 152, 219, 0.3);
            background: linear-gradient(45deg, var(--success), var(--accent));
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 3rem 0;
        }
        .web-link {
            background: rgba(255,255,255,0.9);
            padding: 1.2rem;
            border-radius: var(--radius);
            transition: all 0.3s ease;
            border-left: 4px solid var(--secondary);
        }
        .web-link:hover {
            transform: translateX(10px);
            background: white;
            box-shadow: var(--shadow);
        }
        .web-link a {
            color: var(--dark);
            text-decoration: none;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .web-link a:before {
            content: '🎮';
            font-size: 1.2rem;
        }
        .web-link a:hover {
            color: var(--secondary);
        }
        footer {
            background: var(--dark);
            color: var(--light);
            padding: 3rem 0 2rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: var(--light);
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            border-bottom: 2px solid var(--secondary);
            padding-bottom: 0.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: var(--gray);
            text-decoration: none;
            transition: color 0.3s ease;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .footer-links a:hover {
            color: var(--accent);
            transform: translateX(5px);
        }
        .footer-links a:before {
            content: '→';
            color: var(--secondary);
            font-weight: bold;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: var(--gray);
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
            .container { padding: 0 15px; }
            main { padding: 2rem; }
        }
        @media (max-width: 768px) {
            .hamburger { display: flex; }
            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: var(--dark);
                flex-direction: column;
                padding: 2rem;
                transform: translateY(-100%);
                opacity: 0;
                visibility: hidden;
                transition: all 0.3s ease;
                z-index: 1000;
                box-shadow: 0 10px 20px rgba(0,0,0,0.3);
            }
            .nav-links.active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .search-form { display: none; }
            .mobile-search { display: flex !important; margin-top: 1rem; }
            .search-input { min-width: auto; }
            .header-container { flex-wrap: wrap; }
            .interactive-section { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            main { padding: 1.5rem; }
            .feature-card { padding: 1.5rem; }
            .comment-section { padding: 1.5rem; }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.6s ease forwards;
        }
        .text-center { text-align: center; }
        .mt-3 { margin-top: 3rem; }
        .mb-3 { margin-bottom: 3rem; }
        .py-3 { padding-top: 3rem; padding-bottom: 3rem; }
        .hidden { display: none; }
        .mobile-search { display: none; }