:root {
            --primary-color: #1a237e;
            --secondary-color: #ff9800;
            --accent-color: #4caf50;
            --text-color: #333;
            --light-bg: #f5f5f5;
            --dark-bg: #0d1b2a;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 3rem;
            --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --font-body: 'Arial', sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-body);
            color: var(--text-color);
            line-height: 1.8;
            background-color: #fff;
            overflow-x: hidden;
        }
        header {
            background: linear-gradient(135deg, var(--primary-color), var(--dark-bg));
            color: white;
            padding: var(--spacing-sm);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
        }
        .logo a {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: bold;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--secondary-color);
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: var(--spacing-md);
        }
        nav a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: background 0.3s, color 0.3s;
        }
        nav a:hover {
            background-color: var(--secondary-color);
            color: var(--dark-bg);
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--light-bg);
            padding: var(--spacing-xs) var(--spacing-sm);
            font-size: 0.9rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            max-width: 1200px;
            margin: var(--spacing-md) auto;
            padding: 0 var(--spacing-sm);
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: var(--spacing-md);
        }
        article {
            grid-column: 1;
            background: white;
            padding: var(--spacing-lg);
            border-radius: 8px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
        }
        aside {
            grid-column: 2;
        }
        h1, h2, h3 {
            font-family: var(--font-heading);
            color: var(--primary-color);
            margin-bottom: var(--spacing-sm);
        }
        h1 {
            font-size: 2.5rem;
            border-bottom: 3px solid var(--secondary-color);
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            margin-top: var(--spacing-lg);
            color: #0d47a1;
        }
        h3 {
            font-size: 1.5rem;
            margin-top: var(--spacing-md);
            color: #1565c0;
        }
        p {
            margin-bottom: var(--spacing-sm);
            text-align: justify;
        }
        strong {
            color: var(--primary-color);
            font-weight: bold;
        }
        em {
            color: var(--accent-color);
        }
        section {
            margin-bottom: var(--spacing-lg);
        }
        .highlight {
            background-color: #e3f2fd;
            padding: var(--spacing-md);
            border-left: 5px solid var(--secondary-color);
            margin: var(--spacing-md) 0;
            border-radius: 0 8px 8px 0;
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 8px;
            margin: var(--spacing-md) auto;
            display: block;
            box-shadow: 0 6px 15px rgba(0,0,0,0.1);
            transition: transform 0.3s;
        }
        .article-image:hover {
            transform: scale(1.02);
        }
        aside > div {
            background: white;
            padding: var(--spacing-md);
            margin-bottom: var(--spacing-md);
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
        }
        .sidebar-title {
            font-size: 1.2rem;
            color: var(--primary-color);
            margin-bottom: var(--spacing-sm);
            border-bottom: 2px solid var(--secondary-color);
            padding-bottom: 0.5rem;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        input, textarea, select {
            padding: 0.75rem;
            border: 1px solid #ccc;
            border-radius: 4px;
            font-family: var(--font-body);
            width: 100%;
        }
        button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0.75rem;
            border-radius: 4px;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s, transform 0.2s;
        }
        button:hover {
            background-color: var(--secondary-color);
            color: var(--dark-bg);
            transform: translateY(-2px);
        }
        .rating {
            display: flex;
            gap: 5px;
            margin: 10px 0;
        }
        .rating i {
            color: #ffc107;
            cursor: pointer;
            font-size: 1.5rem;
            transition: color 0.3s;
        }
        .rating i:hover {
            color: #ff9800;
        }
        .footer-links {
            background-color: var(--light-bg);
            padding: var(--spacing-lg);
            margin-top: var(--spacing-lg);
        }
        .web-links-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: var(--spacing-sm);
        }
        .web-link {
            background: white;
            padding: var(--spacing-sm);
            border-radius: 4px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
            transition: transform 0.3s;
        }
        .web-link:hover {
            transform: translateY(-5px);
        }
        .web-link a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
        }
        .web-link a:hover {
            text-decoration: underline;
            color: var(--secondary-color);
        }
        footer {
            background-color: var(--dark-bg);
            color: white;
            padding: var(--spacing-lg);
            text-align: center;
        }
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
        }
        @media (max-width: 768px) {
            main {
                grid-template-columns: 1fr;
                padding: var(--spacing-sm);
            }
            aside {
                grid-column: 1;
            }
            .header-container {
                flex-wrap: wrap;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: var(--primary-color);
                position: absolute;
                top: 100%;
                left: 0;
                padding: var(--spacing-sm);
                border-radius: 0 0 8px 8px;
            }
            nav ul.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .web-links-container {
                grid-template-columns: 1fr;
            }
        }