* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Nirmala UI', sans-serif;
        }
        :root {
            --primary: #1e3a8a;
            --secondary: #f59e0b;
            --accent: #10b981;
            --light: #f8fafc;
            --dark: #0f172a;
            --gray: #64748b;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        body {
            background-color: #f1f5f9;
            color: #334155;
            line-height: 1.7;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary), #1e40af);
            color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .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:hover {
            color: var(--secondary);
        }
        .search-box {
            display: flex;
            width: 300px;
        }
        .search-box input {
            flex: 1;
            padding: 10px 15px;
            border: none;
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-box button {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: #d97706;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
        }
        nav {
            background: rgba(255, 255, 255, 0.1);
            padding: 10px 0;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 30px;
            justify-content: center;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-links a:hover, .nav-links a.active {
            background: rgba(255, 255, 255, 0.2);
            color: var(--secondary);
        }
        .breadcrumb {
            padding: 12px 0;
            background: #e2e8f0;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 30px 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        article {
            background: white;
            border-radius: 12px;
            padding: 40px;
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--dark);
            font-size: 2.5rem;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        h2 {
            color: var(--primary);
            margin: 30px 0 15px;
            padding-bottom: 8px;
            border-bottom: 3px solid var(--secondary);
            font-size: 1.8rem;
        }
        h3 {
            color: var(--dark);
            margin: 20px 0 10px;
            font-size: 1.4rem;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .highlight {
            background: #fef3c7;
            border-left: 4px solid var(--secondary);
            padding: 15px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .chess-img {
            width: 100%;
            height: auto;
            border-radius: 10px;
            margin: 25px 0;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
        }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat-card {
            background: linear-gradient(to bottom right, #dbeafe, #eff6ff);
            padding: 20px;
            border-radius: 10px;
            text-align: center;
            border: 2px solid #bfdbfe;
        }
        .stat-card h4 {
            color: var(--primary);
            font-size: 2rem;
            margin-bottom: 5px;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }
        .sidebar-widget {
            background: white;
            border-radius: 12px;
            padding: 25px;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--primary);
            margin-bottom: 15px;
            font-size: 1.3rem;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .stars {
            display: flex;
            gap: 8px;
            font-size: 1.8rem;
            color: #cbd5e1;
            cursor: pointer;
            margin-bottom: 10px;
        }
        .stars .active {
            color: #fbbf24;
        }
        input, textarea, select {
            padding: 12px;
            border: 1px solid #cbd5e1;
            border-radius: 6px;
            font-size: 1rem;
            width: 100%;
        }
        button.submit-btn {
            background: var(--accent);
            color: white;
            border: none;
            padding: 12px;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        button.submit-btn:hover {
            background: #0da271;
        }
        .popular-links {
            list-style: none;
        }
        .popular-links li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px solid #e2e8f0;
        }
        .popular-links a {
            color: var(--primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .popular-links a:hover {
            color: var(--secondary);
            gap: 15px;
        }
        .web-links {
            background: #1e293b;
            padding: 40px 0;
            margin-top: 50px;
        }
        .web-links .container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 20px;
        }
        .web-link {
            background: rgba(255, 255, 255, 0.05);
            padding: 15px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .web-link:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }
        .web-link a {
            color: #cbd5e1;
            text-decoration: none;
            font-size: 0.95rem;
        }
        .web-link a:hover {
            color: var(--secondary);
        }
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 40px 0;
            text-align: center;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 25px;
            margin-bottom: 25px;
        }
        .footer-links a {
            color: #cbd5e1;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary);
        }
        .copyright {
            font-size: 0.9rem;
            border-top: 1px solid #334155;
            padding-top: 20px;
            max-width: 800px;
            margin: 0 auto;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            .nav-links {
                gap: 15px;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
                gap: 15px;
            }
            .search-box {
                order: 3;
                width: 100%;
            }
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                padding: 15px 0;
            }
            nav.active {
                display: block;
            }
            .nav-links {
                flex-direction: column;
                align-items: center;
                gap: 10px;
            }
            h1 {
                font-size: 2rem;
            }
            article {
                padding: 25px;
            }
            .stats-box {
                grid-template-columns: 1fr;
            }
        }
        @media print {
            header, aside, .web-links, footer, .breadcrumb {
                display: none;
            }
            main {
                display: block;
            }
            article {
                box-shadow: none;
                padding: 0;
            }
        }