:root {
            --primary-color: #2c3e50;
            --secondary-color: #e74c3c;
            --accent-color: #3498db;
            --light-color: #ecf0f1;
            --dark-color: #2c3e50;
            --text-color: #333;
            --border-radius: 8px;
            --box-shadow: 0 4px 6px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: var(--text-color);
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: var(--primary-color);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--box-shadow);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--secondary-color);
            font-size: 2.5rem;
        }
        .logo span {
            background: linear-gradient(45deg, #3498db, #e74c3c);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            font-weight: 900;
        }
        .desktop-nav {
            display: flex;
            gap: 2rem;
            align-items: center;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
        }
        .desktop-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
            position: relative;
        }
        .desktop-nav a:hover {
            background: rgba(255,255,255,0.1);
            transform: translateY(-2px);
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background: var(--secondary-color);
            transition: var(--transition);
            transform: translateX(-50%);
        }
        .desktop-nav a:hover::after {
            width: 80%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .mobile-nav {
            display: none;
            width: 100%;
            background: var(--dark-color);
            padding: 1rem;
            border-radius: var(--border-radius);
            margin-top: 1rem;
            animation: slideDown 0.3s ease;
        }
        @keyframes slideDown {
            from { opacity: 0; transform: translateY(-20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .mobile-nav.active {
            display: block;
        }
        .mobile-nav a {
            display: block;
            color: white;
            text-decoration: none;
            padding: 0.8rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            transition: var(--transition);
        }
        .mobile-nav a:hover {
            background: rgba(255,255,255,0.1);
            padding-left: 1.5rem;
        }
        .breadcrumb {
            background: var(--light-color);
            padding: 1rem;
            border-radius: var(--border-radius);
            margin: 1rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--accent-color);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--secondary-color);
            text-decoration: underline;
        }
        .search-container {
            background: white;
            padding: 2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            margin: 2rem 0;
            text-align: center;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
            gap: 10px;
        }
        .search-form input {
            flex: 1;
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-form input:focus {
            outline: none;
            border-color: var(--accent-color);
            box-shadow: 0 0 0 3px rgba(52,152,219,0.2);
        }
        .search-form button {
            background: var(--accent-color);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: #2980b9;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        }
        main {
            padding: 2rem 0;
        }
        article {
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            padding: 3rem;
            margin-bottom: 2rem;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-align: center;
            padding-bottom: 1rem;
            border-bottom: 3px solid var(--secondary-color);
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-color);
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--light-color);
        }
        h3 {
            font-size: 1.5rem;
            color: var(--dark-color);
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--primary-color);
            background: var(--light-color);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            border-left: 4px solid var(--accent-color);
            margin: 2rem 0;
        }
        .highlight {
            background: linear-gradient(120deg, #a1c4fd 0%, #c2e9fb 100%);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            border-left: 5px solid var(--accent-color);
        }
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .strategy-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 2rem;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            border-top: 4px solid var(--secondary-color);
        }
        .strategy-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.15);
        }
        .strategy-card h3 {
            color: var(--secondary-color);
            margin-top: 0;
        }
        .strategy-card i {
            font-size: 2.5rem;
            color: var(--accent-color);
            margin-bottom: 1rem;
        }
        .expert-quote {
            background: var(--light-color);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 2.5rem 0;
            border-left: 4px solid var(--secondary-color);
            font-style: italic;
            position: relative;
        }
        .expert-quote::before {
            content: '"';
            font-size: 5rem;
            color: var(--accent-color);
            position: absolute;
            top: -20px;
            left: 20px;
            opacity: 0.3;
        }
        .expert-quote footer {
            text-align: right;
            font-weight: 600;
            color: var(--primary-color);
            margin-top: 1rem;
            font-style: normal;
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            margin: 2rem auto;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }
        .article-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: var(--transition);
        }
        .article-image:hover img {
            transform: scale(1.03);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 1rem;
            background: var(--light-color);
            border-bottom-left-radius: var(--border-radius);
            border-bottom-right-radius: var(--border-radius);
        }
        .tactic-diagram {
            background: #f8f9fa;
            border: 2px solid #dee2e6;
            border-radius: var(--border-radius);
            padding: 2rem;
            margin: 2rem 0;
            position: relative;
            overflow: hidden;
        }
        .tactic-diagram::before {
            content: '♟️ TACTICAL SPOTLIGHT';
            position: absolute;
            top: 0;
            right: 0;
            background: var(--secondary-color);
            color: white;
            padding: 0.5rem 1rem;
            font-size: 0.8rem;
            font-weight: 600;
            border-bottom-left-radius: var(--border-radius);
        }
        .move-sequence {
            background: white;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            padding: 1.5rem;
            margin: 1.5rem 0;
            font-family: 'Courier New', monospace;
            position: relative;
            transition: var(--transition);
        }
        .move-sequence:hover {
            border-color: var(--accent-color);
            box-shadow: 0 0 0 3px rgba(52,152,219,0.1);
        }
        .move-number {
            display: inline-block;
            background: var(--primary-color);
            color: white;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            text-align: center;
            line-height: 30px;
            margin-right: 10px;
            font-weight: 600;
        }
        .user-interaction {
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            padding: 2rem;
            margin: 3rem 0;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }
        .rating-section, .comment-section {
            background: var(--light-color);
            padding: 2rem;
            border-radius: var(--border-radius);
        }
        .star-rating {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
            justify-content: center;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label {
            color: #ffd700;
        }
        textarea, input[type="text"], input[type="email"] {
            width: 100%;
            padding: 1rem;
            margin: 0.5rem 0 1rem;
            border: 2px solid #ddd;
            border-radius: var(--border-radius);
            font-family: inherit;
            transition: var(--transition);
        }
        textarea:focus, input:focus {
            outline: none;
            border-color: var(--accent-color);
            box-shadow: 0 0 0 3px rgba(52,152,219,0.2);
        }
        button[type="submit"] {
            background: var(--secondary-color);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            width: 100%;
        }
        button[type="submit"]:hover {
            background: #c0392b;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin: 3rem 0;
            padding: 2rem;
            background: var(--primary-color);
            border-radius: var(--border-radius);
        }
        .web-link {
            background: rgba(255,255,255,0.1);
            padding: 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .web-link:hover {
            background: rgba(255,255,255,0.2);
            transform: translateX(10px);
        }
        .web-link a {
            color: white;
            text-decoration: none;
            display: block;
            padding: 0.5rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .web-link a:hover {
            background: rgba(255,255,255,0.1);
            text-decoration: underline;
        }
        footer {
            background: var(--dark-color);
            color: white;
            padding: 3rem 0 1rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #bbb;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.3rem; }
            article { padding: 1.5rem; }
            .search-form { flex-direction: column; }
            .strategy-grid { grid-template-columns: 1fr; }
            .interaction-grid { grid-template-columns: 1fr; }
            .logo { font-size: 1.8rem; }
        }
        @media (max-width: 480px) {
            .container { padding: 0 15px; }
            h1 { font-size: 1.8rem; }
            article { padding: 1rem; }
            .breadcrumb { font-size: 0.8rem; }
            .footer-content { grid-template-columns: 1fr; }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.6s ease-out;
        }
        @media print {
            header, .search-container, .user-interaction, 
            .web-links, footer, .hamburger {
                display: none;
            }
            body { background: white; }
            article { box-shadow: none; }
            a { color: black; text-decoration: underline; }
        }