:root {
            --primary-red: #E53935;
            --primary-blue: #1E88E5;
            --primary-green: #43A047;
            --primary-yellow: #FDD835;
            --primary-black: #212121;
            --primary-white: #FAFAFA;
            --secondary-gray: #757575;
            --light-gray: #EEEEEE;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 3rem;
            --spacing-xl: 5rem;
            --border-radius: 12px;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--primary-black);
            background-color: var(--primary-white);
            overflow-x: hidden;
        }
        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-red);
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-red), var(--primary-blue));
            color: white;
            padding: var(--spacing-sm) 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            text-transform: uppercase;
            letter-spacing: 2px;
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
        }
        .my-logo i {
            color: var(--primary-yellow);
        }
        .my-logo:hover {
            transform: scale(1.03);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: var(--spacing-md);
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            font-size: 1.1rem;
            padding: var(--spacing-xs) var(--spacing-sm);
            border-radius: 50px;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background-color: rgba(255, 255, 255, 0.15);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--light-gray);
            padding: var(--spacing-sm);
            font-size: 0.9rem;
            border-bottom: 1px solid #ddd;
        }
        .breadcrumb a {
            color: var(--secondary-gray);
        }
        .breadcrumb a:hover {
            color: var(--primary-blue);
        }
        .search-container {
            display: flex;
            justify-content: center;
            padding: var(--spacing-lg) 0;
            background: linear-gradient(to right, #f8f9fa, #e9ecef);
            margin-bottom: var(--spacing-lg);
            border-radius: var(--border-radius);
        }
        .search-form {
            width: 100%;
            max-width: 600px;
            display: flex;
            box-shadow: var(--shadow);
            border-radius: 50px;
            overflow: hidden;
        }
        .search-input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1.1rem;
            outline: none;
        }
        .search-btn {
            background-color: var(--primary-red);
            color: white;
            border: none;
            padding: 0 2rem;
            cursor: pointer;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: #C62828;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: var(--spacing-lg);
            padding: var(--spacing-md) 0;
        }
        article {
            background: white;
            padding: var(--spacing-lg);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .article-header {
            margin-bottom: var(--spacing-lg);
            border-bottom: 3px solid var(--primary-yellow);
            padding-bottom: var(--spacing-md);
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: var(--primary-black);
            margin-bottom: var(--spacing-sm);
            line-height: 1.2;
        }
        .meta-info {
            display: flex;
            gap: var(--spacing-md);
            color: var(--secondary-gray);
            font-size: 0.95rem;
            margin-top: var(--spacing-sm);
        }
        .meta-info i {
            margin-right: 0.5rem;
        }
        .content-section {
            margin-bottom: var(--spacing-xl);
        }
        h2 {
            font-size: 2.2rem;
            color: var(--primary-blue);
            margin: var(--spacing-lg) 0 var(--spacing-md);
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed var(--light-gray);
        }
        h3 {
            font-size: 1.8rem;
            color: var(--primary-green);
            margin: var(--spacing-md) 0 var(--spacing-sm);
        }
        h4 {
            font-size: 1.4rem;
            color: var(--primary-red);
            margin: var(--spacing-sm) 0;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            color: var(--secondary-gray);
            font-weight: 500;
            padding: var(--spacing-md);
            background-color: #F5F5F5;
            border-left: 5px solid var(--primary-blue);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .highlight {
            background-color: rgba(253, 216, 53, 0.2);
            padding: var(--spacing-sm);
            border-radius: var(--border-radius);
            border-left: 4px solid var(--primary-yellow);
            margin: var(--spacing-md) 0;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--spacing-md);
            margin: var(--spacing-lg) 0;
        }
        .card {
            background: white;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border-top: 5px solid var(--primary-blue);
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 20px rgba(0,0,0,0.15);
        }
        .card-content {
            padding: var(--spacing-md);
        }
        .card-title {
            font-size: 1.3rem;
            color: var(--primary-black);
            margin-bottom: var(--spacing-xs);
        }
        .related-links {
            background-color: var(--light-gray);
            padding: var(--spacing-md);
            border-radius: var(--border-radius);
            margin: var(--spacing-lg) 0;
        }
        .related-links h3 {
            margin-top: 0;
        }
        .related-links ul {
            list-style-position: inside;
            column-count: 2;
        }
        .related-links li {
            margin-bottom: 0.8rem;
        }
        figure {
            margin: var(--spacing-lg) 0;
            text-align: center;
        }
        .article-image {
            max-width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        figcaption {
            font-style: italic;
            color: var(--secondary-gray);
            margin-top: var(--spacing-xs);
        }
        aside {
            background: white;
            padding: var(--spacing-md);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget {
            margin-bottom: var(--spacing-lg);
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            color: var(--primary-black);
            margin-bottom: var(--spacing-md);
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--primary-yellow);
        }
        .rating-widget {
            text-align: center;
            padding: var(--spacing-md);
            background: linear-gradient(to bottom right, #E3F2FD, #F3E5F5);
            border-radius: var(--border-radius);
        }
        .stars {
            font-size: 2rem;
            color: #FFD700;
            margin: var(--spacing-sm) 0;
            cursor: pointer;
        }
        .star:hover,
        .star.active {
            transform: scale(1.2);
        }
        .interaction-forms {
            background-color: white;
            padding: var(--spacing-lg);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin-top: var(--spacing-xl);
        }
        .form-group {
            margin-bottom: var(--spacing-md);
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--primary-black);
        }
        input, textarea, select {
            width: 100%;
            padding: 1rem;
            border: 2px solid var(--light-gray);
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus,
        textarea:focus,
        select:focus {
            outline: none;
            border-color: var(--primary-blue);
        }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, var(--primary-blue), var(--primary-green));
            color: white;
            padding: 1rem 2.5rem;
            border: none;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(0,0,0,0.1);
            background: linear-gradient(to right, var(--primary-green), var(--primary-blue));
        }
        .btn-block {
            width: 100%;
        }
        .site-footer {
            background-color: var(--primary-black);
            color: white;
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-xl);
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }
        .footer-section h3 {
            color: var(--primary-yellow);
            margin-bottom: var(--spacing-md);
            font-size: 1.4rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #CCCCCC;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: #333;
            color: #CCCCCC;
            padding: var(--spacing-sm);
            margin: var(--spacing-xs) 0;
            border-radius: 5px;
            border-left: 4px solid var(--primary-blue);
        }
        friend-link a {
            color: var(--primary-yellow);
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: var(--spacing-md);
            border-top: 1px solid #444;
            color: #999;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
                margin-top: var(--spacing-lg);
            }
        }
        @media (max-width: 768px) {
            .main-nav ul {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background-color: var(--primary-blue);
                flex-direction: column;
                padding: var(--spacing-md);
                text-align: center;
                box-shadow: var(--shadow);
                border-radius: 0 0 var(--border-radius) var(--border-radius);
            }
            .main-nav.active ul {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .related-links ul {
                column-count: 1;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }