* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #2c3e50;
            --secondary-color: #3498db;
            --accent-color: #e74c3c;
            --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;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-color);
            background-color: #f9f9f9;
            overflow-x: hidden;
        }
        header {
            background-color: white;
            box-shadow: var(--box-shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo:hover {
            color: var(--secondary-color);
        }
        .logo i {
            color: var(--accent-color);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            text-decoration: none;
            color: var(--dark-color);
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 12px;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .main-nav a:hover {
            background-color: var(--secondary-color);
            color: white;
        }
        .main-nav a.active {
            background-color: var(--primary-color);
            color: white;
        }
        .breadcrumb {
            background-color: #f1f1f1;
            padding: 15px 0;
            border-bottom: 1px solid #ddd;
        }
        .breadcrumb-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 10px;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb a {
            text-decoration: none;
            color: var(--secondary-color);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb i {
            margin: 0 10px;
            color: #999;
            font-size: 0.8rem;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: var(--primary-color);
            border-radius: 2px;
            transition: var(--transition);
        }
        .main-container {
            max-width: 1200px;
            margin: 30px auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        article {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--box-shadow);
        }
        h1, h2, h3, h4 {
            color: var(--primary-color);
            margin-bottom: 20px;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.5rem;
            border-bottom: 3px solid var(--secondary-color);
            padding-bottom: 15px;
            margin-bottom: 30px;
        }
        h2 {
            font-size: 2rem;
            margin-top: 40px;
            background-color: #f8f9fa;
            padding: 15px;
            border-left: 5px solid var(--accent-color);
        }
        h3 {
            font-size: 1.5rem;
            margin-top: 30px;
            color: var(--secondary-color);
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--primary-color);
            background-color: #e8f4fc;
            padding: 20px;
            border-radius: var(--border-radius);
            margin-bottom: 30px;
            border-left: 5px solid var(--secondary-color);
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 8px;
        }
        .highlight {
            background-color: #fffacd;
            padding: 2px 5px;
            border-radius: 3px;
            font-weight: 600;
        }
        .note {
            background-color: #e8f6f3;
            border-left: 4px solid #1abc9c;
            padding: 15px;
            margin: 20px 0;
            border-radius: var(--border-radius);
        }
        .warning {
            background-color: #fdebd0;
            border-left: 4px solid #f39c12;
            padding: 15px;
            margin: 20px 0;
            border-radius: var(--border-radius);
        }
        .solution-box {
            background-color: #f9f9f9;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            padding: 25px;
            margin: 25px 0;
            transition: var(--transition);
        }
        .solution-box:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        .solution-title {
            color: var(--accent-color);
            font-size: 1.3rem;
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .article-image {
            width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            margin: 30px 0;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
        }
        .article-image:hover {
            transform: scale(1.02);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .form-container {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 30px;
            margin-bottom: 30px;
            box-shadow: var(--box-shadow);
        }
        .form-title {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 25px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--primary-color);
        }
        input, textarea, select {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 1rem;
            font-family: inherit;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--secondary-color);
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
        }
        button {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 14px 30px;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        button:hover {
            background-color: #2980b9;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .rating {
            display: flex;
            gap: 5px;
            margin: 15px 0;
            direction: ltr;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            margin: 0;
        }
        .rating input:checked ~ label,
        .rating label:hover,
        .rating label:hover ~ label {
            color: #ffc107;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 25px;
            box-shadow: var(--box-shadow);
        }
        .widget-title {
            font-size: 1.4rem;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--secondary-color);
            color: var(--primary-color);
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px dashed #eee;
        }
        .related-links a {
            text-decoration: none;
            color: var(--text-color);
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .related-links a:hover {
            color: var(--secondary-color);
            transform: translateX(5px);
        }
        .stats {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            text-align: center;
        }
        .stat-item {
            background-color: #f8f9fa;
            padding: 20px;
            border-radius: var(--border-radius);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--secondary-color);
            display: block;
        }
        .stat-label {
            font-size: 0.9rem;
            color: #666;
        }
        .internal-links {
            background-color: #2c3e50;
            padding: 40px 0;
            margin-top: 60px;
        }
        .internal-links-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
        }
        .web-link {
            background-color: rgba(255, 255, 255, 0.1);
            padding: 15px;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-5px);
        }
        .web-link a {
            color: white;
            text-decoration: none;
            display: block;
            font-size: 1rem;
            line-height: 1.5;
        }
        .web-link a:hover {
            color: #3498db;
        }
        footer {
            background-color: var(--primary-color);
            color: white;
            padding: 40px 0;
            text-align: center;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .copyright {
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            color: #bbb;
        }
        @media (max-width: 992px) {
            .main-container {
                grid-template-columns: 1fr;
            }
            .main-nav ul {
                gap: 15px;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background-color: white;
                padding: 20px;
                box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
                transform: translateY(-100%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
            }
            .main-nav.active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li {
                width: 100%;
            }
            .main-nav a {
                display: block;
                padding: 15px;
                border-bottom: 1px solid #eee;
            }
            .header-container {
                height: 70px;
            }
            article {
                padding: 25px;
            }
            .internal-links-container {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .header-container, .breadcrumb-container, .main-container {
                padding: 0 15px;
            }
            .form-container {
                padding: 20px;
            }
            .stats {
                grid-template-columns: 1fr;
            }
        }
        @media print {
            .main-nav, .breadcrumb, aside, .form-container, .internal-links, .hamburger, button, .rating {
                display: none;
            }
            .main-container {
                grid-template-columns: 1fr;
                margin: 0;
                padding: 0;
            }
            article {
                box-shadow: none;
                padding: 0;
            }
            body {
                font-size: 12pt;
                color: black;
                background: white;
            }
            a {
                color: black;
                text-decoration: underline;
            }
        }