:root {
            --primary: #8B4513;
            --secondary: #DAA520;
            --accent: #228B22;
            --dark: #2C2C2C;
            --light: #F5F5DC;
            --gray: #8A8A8A;
            --danger: #DC143C;
            --shadow: 0 4px 12px rgba(0,0,0,0.15);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: var(--dark);
            background: linear-gradient(135deg, #f5f5dc 0%, #f0e6d6 100%);
            max-width: 1440px;
            margin: 0 auto;
            padding: 0 15px;
        }
        header {
            background: linear-gradient(to right, var(--dark) 0%, var(--primary) 100%);
            color: white;
            padding: 1.5rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 900;
            text-transform: uppercase;
            letter-spacing: 2px;
            background: linear-gradient(45deg, var(--secondary), #FFD700);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--secondary);
            font-size: 2.5rem;
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .desktop-nav a:hover,
        .desktop-nav a.active {
            background-color: var(--secondary);
            color: var(--dark);
        }
        .mobile-toggle {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            width: 100%;
            background-color: var(--dark);
            padding: 1rem;
            margin-top: 1rem;
            border-radius: var(--radius);
        }
        .mobile-nav.active {
            display: block;
        }
        .mobile-nav ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .mobile-nav a {
            color: white;
            text-decoration: none;
            display: block;
            padding: 0.8rem;
            border-bottom: 1px solid var(--gray);
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0;
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        aside {
            background: white;
            padding: 1.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        .search-box {
            margin-bottom: 2rem;
        }
        .search-box h3 {
            margin-bottom: 1rem;
            color: var(--primary);
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 0.8rem;
            border: 2px solid var(--primary);
            border-right: none;
            border-radius: var(--radius 0 0 var(--radius);
            font-size: 1rem;
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
        }
        .rating-widget, .comment-widget {
            margin-bottom: 2rem;
        }
        .rating-widget h3, .comment-widget h3 {
            margin-bottom: 1rem;
            color: var(--primary);
        }
        .stars {
            display: flex;
            gap: 5px;
            margin-bottom: 1rem;
        }
        .star {
            font-size: 1.5rem;
            color: var(--gray);
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--secondary);
        }
        .rating-form input, .comment-form input,
        .rating-form textarea, .comment-form textarea {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 1px solid #ddd;
            border-radius: var(--radius);
            font-family: inherit;
        }
        .rating-form button, .comment-form button {
            background: var(--accent);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: var(--radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .rating-form button:hover, .comment-form button:hover {
            background: #1a7a1a;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
            line-height: 1.3;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: var(--dark);
            margin: 2.5rem 0 1.5rem;
            padding-left: 1rem;
            border-left: 5px solid var(--accent);
        }
        h3 {
            font-size: 1.5rem;
            color: var(--primary);
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--primary);
            background: #FFF8DC;
            padding: 1.5rem;
            border-radius: var(--radius);
            border-left: 4px solid var(--secondary);
        }
        .highlight {
            background: linear-gradient(120deg, #FFD70022 0%, #FFD70044 100%);
            padding: 1.5rem;
            border-radius: var(--radius);
            margin: 2rem 0;
            border: 1px dashed var(--secondary);
        }
        .term {
            font-weight: bold;
            color: var(--accent);
        }
        .note {
            background: #E6F3FF;
            padding: 1.5rem;
            border-radius: var(--radius);
            margin: 2rem 0;
            border-left: 4px solid #4A90E2;
        }
        .tip {
            background: #E8F5E9;
            padding: 1.5rem;
            border-radius: var(--radius);
            margin: 2rem 0;
            border-left: 4px solid var(--accent);
        }
        .tip::before {
            content: "💡";
            margin-right: 10px;
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--radius);
            margin: 2rem auto;
            display: block;
            box-shadow: var(--shadow);
            border: 3px solid var(--secondary);
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: 0 0 10px rgba(0,0,0,0.1);
        }
        th, td {
            padding: 1rem;
            text-align: left;
            border-bottom: 1px solid #ddd;
        }
        th {
            background-color: var(--primary);
            color: white;
        }
        tr:nth-child(even) {
            background-color: #f9f9f9;
        }
        .internal-link {
            color: var(--accent);
            font-weight: 600;
            text-decoration: none;
            border-bottom: 1px dotted var(--accent);
            transition: var(--transition);
        }
        .internal-link:hover {
            color: var(--primary);
            border-bottom: 2px solid var(--primary);
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 1.5rem;
            margin: 3rem 0;
            padding: 2.5rem;
            background: var(--dark);
            border-radius: var(--radius);
        }
        .web-link {
            background: white;
            padding: 1.2rem;
            border-radius: var(--radius);
            text-align: center;
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }
        .web-link a {
            color: var(--dark);
            text-decoration: none;
            font-weight: 600;
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0;
            text-align: center;
            margin-top: 3rem;
            border-radius: var(--radius) var(--radius) 0 0;
        }
        .copyright {
            margin-top: 2rem;
            padding-top: 2rem;
            border-top: 1px solid var(--gray);
            font-size: 0.9rem;
            color: var(--gray);
        }
        @media (max-width: 1024px) {
            main {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
            .footer-links {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
            }
            .desktop-nav {
                display: none;
            }
            .mobile-toggle {
                display: block;
                position: absolute;
                top: 1.5rem;
                right: 15px;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            article {
                padding: 1.5rem;
            }
            .footer-links {
                grid-template-columns: repeat(2, 1fr);
                padding: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .footer-links {
                grid-template-columns: 1fr;
            }
            .logo {
                font-size: 1.8rem;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        article, aside {
            animation: fadeIn 0.8s ease-out;
        }
        .schema-data {
            display: none;
        }