:root {
            --primary-dark: #2c3e50;
            --primary-light: #34495e;
            --accent: #e74c3c;
            --accent-hover: #c0392b;
            --light-bg: #f8f9fa;
            --text-dark: #2d3436;
            --text-light: #636e72;
            --border: #dfe6e9;
            --shadow: rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        * {
            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: 1.7;
            color: var(--text-dark);
            background-color: #fff;
            max-width: 100vw;
            overflow-x: hidden;
        }
        .header-container {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            color: white;
            padding: 1rem 5%;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .top-bar {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 1px;
        }
        .logo i {
            color: var(--accent);
        }
        .logo:hover {
            color: #ecf0f1;
        }
        .desktop-nav {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 992px) {
            .desktop-nav {
                display: none;
            }
        }
        .nav-link {
            color: #ecf0f1;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
            transition: var(--transition);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--accent);
            transition: width 0.3s ease;
        }
        .nav-link:hover {
            color: var(--accent);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 992px) {
            .hamburger {
                display: block;
            }
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: var(--primary-light);
            padding: 1rem;
            border-radius: 0 0 10px 10px;
            margin-top: 1rem;
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav .nav-link {
            padding: 0.8rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            padding: 0.8rem 5%;
            background-color: var(--light-bg);
            font-size: 0.9rem;
            color: var(--text-light);
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb a {
            color: var(--primary-light);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .main-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem 5%;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 768px) {
            .main-container {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            border-radius: 10px;
            padding: 2.5rem;
            box-shadow: 0 5px 15px var(--shadow);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-dark);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid var(--accent);
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-light);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px dashed var(--border);
        }
        h3 {
            font-size: 1.5rem;
            color: var(--text-dark);
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.25rem;
            color: var(--text-light);
            font-weight: 500;
            background: var(--light-bg);
            padding: 1.5rem;
            border-left: 4px solid var(--accent);
            border-radius: 0 8px 8px 0;
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: #fff9e6;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 5px solid #f1c40f;
            margin: 1.5rem 0;
        }
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .strategy-card {
            background: var(--light-bg);
            padding: 1.5rem;
            border-radius: 8px;
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .strategy-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px var(--shadow);
        }
        .strategy-card h4 {
            color: var(--primary-dark);
            margin-bottom: 0.8rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .strategy-card i {
            color: var(--accent);
        }
        .image-container {
            margin: 2.5rem 0;
            text-align: center;
        }
        .article-img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
            border: 5px solid white;
        }
        figcaption {
            font-style: italic;
            color: var(--text-light);
            margin-top: 0.8rem;
            font-size: 0.95rem;
        }
        .rules-list {
            list-style-type: none;
            padding-left: 1.5rem;
        }
        .rules-list li {
            margin-bottom: 1rem;
            position: relative;
            padding-left: 2rem;
        }
        .rules-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--accent);
            font-weight: bold;
        }
        .terminology {
            background: #f0f7ff;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .terminology dt {
            font-weight: bold;
            color: var(--primary-dark);
            margin-top: 1rem;
        }
        .terminology dd {
            margin-left: 1rem;
            color: var(--text-light);
        }
        blockquote {
            font-style: italic;
            color: var(--text-light);
            border-left: 4px solid var(--accent);
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-size: 1.1rem;
        }
        .sidebar {
            background: var(--light-bg);
            border-radius: 10px;
            padding: 1.8rem;
            height: fit-content;
            border: 1px solid var(--border);
        }
        .sidebar h3 {
            color: var(--primary-dark);
            margin-bottom: 1.2rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .search-box {
            margin-bottom: 2rem;
        }
        .search-form {
            display: flex;
        }
        .search-input {
            flex: 1;
            padding: 0.9rem 1rem;
            border: 1px solid var(--border);
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
        }
        .search-btn {
            background: var(--accent);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-btn:hover {
            background: var(--accent-hover);
        }
        .rating-widget, .comments-widget {
            background: white;
            padding: 1.5rem;
            border-radius: 8px;
            margin-bottom: 2rem;
            box-shadow: 0 3px 10px var(--shadow);
        }
        .stars {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
        }
        .star {
            color: #ddd;
            cursor: pointer;
            font-size: 1.5rem;
            transition: color 0.2s;
        }
        .star.active,
        .star:hover {
            color: #f1c40f;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-top: 1rem;
        }
        .form-input, .form-textarea {
            padding: 0.8rem;
            border: 1px solid var(--border);
            border-radius: 6px;
            font-family: inherit;
        }
        .form-textarea {
            min-height: 100px;
            resize: vertical;
        }
        .submit-btn {
            background: var(--primary-dark);
            color: white;
            border: none;
            padding: 0.9rem;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background: var(--primary-light);
        }
        .footer-container {
            background: var(--primary-dark);
            color: white;
            padding: 3rem 5% 1.5rem;
            margin-top: 4rem;
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 3rem;
        }
        .web-link {
            background: rgba(255, 255, 255, 0.05);
            padding: 1rem;
            border-radius: 6px;
            transition: var(--transition);
        }
        .web-link:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .web-link a {
            color: #bdc3c7;
            text-decoration: none;
            display: block;
        }
        .web-link a:hover {
            color: white;
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #95a5a6;
            font-size: 0.9rem;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .bold {
            font-weight: 700;
            color: var(--primary-dark);
        }
        .text-center {
            text-align: center;
        }
        .mb-3 {
            margin-bottom: 3rem;
        }
        .mt-3 {
            margin-top: 3rem;
        }
        .hidden {
            display: none;
        }