:root {
            --primary-color: #2563eb;
            --secondary-color: #1e40af;
            --accent-color: #f59e0b;
            --text-color: #1f2937;
            --light-bg: #f3f4f6;
            --dark-bg: #111827;
            --white: #ffffff;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --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: 1.6;
            color: var(--text-color);
            background-color: var(--white);
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: var(--dark-bg);
            color: var(--white);
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            font-size: 2rem;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
            font-weight: 500;
        }
        .main-nav a:hover {
            background-color: var(--primary-color);
            color: var(--white);
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--white);
        }
        .breadcrumb {
            background-color: var(--light-bg);
            padding: 0.75rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin-left: 0.5rem;
            color: #6b7280;
        }
        .breadcrumb a:hover {
            color: var(--primary-color);
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: var(--dark-bg);
                flex-direction: column;
                display: none;
                padding: 1rem;
                box-shadow: var(--shadow);
            }
            .main-nav.active {
                display: flex;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1rem;
            }
        }
        main {
            flex: 1;
            padding: 2rem 0;
        }
        article {
            max-width: 900px;
            margin: 0 auto;
            padding: 2rem;
            background-color: var(--white);
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.5rem;
            color: var(--secondary-color);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-color);
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--light-bg);
        }
        h3 {
            font-size: 1.5rem;
            color: var(--secondary-color);
            margin: 1.5rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fef3c7;
            padding: 1.5rem;
            border-left: 4px solid var(--accent-color);
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .emoji {
            font-size: 1.2rem;
            margin-right: 5px;
        }
        b, strong {
            color: var(--primary-color);
        }
        .featured-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 8px;
            margin: 2rem auto;
            display: block;
            box-shadow: var(--shadow);
        }
        .interactive-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .card {
            background-color: var(--light-bg);
            padding: 1.5rem;
            border-radius: 8px;
            transition: var(--transition);
            border: 1px solid #e5e7eb;
        }
        .card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        .card h3 {
            color: var(--primary-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        input, textarea, select {
            padding: 0.75rem;
            border: 1px solid #d1d5db;
            border-radius: 4px;
            font-family: inherit;
            font-size: 1rem;
        }
        button {
            background-color: var(--primary-color);
            color: var(--white);
            padding: 0.75rem 1.5rem;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        button:hover {
            background-color: var(--secondary-color);
        }
        .rating {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 1.5rem;
            color: #d1d5db;
            cursor: pointer;
        }
        .rating input:checked ~ label,
        .rating label:hover,
        .rating label:hover ~ label {
            color: var(--accent-color);
        }
        .internal-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 2rem 0;
            justify-content: center;
        }
        .web-link {
            background-color: var(--light-bg);
            padding: 0.75rem 1.5rem;
            border-radius: 50px;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .web-link:hover {
            background-color: var(--primary-color);
            color: var(--white);
            border-color: var(--primary-color);
        }
        .site-footer {
            background-color: var(--dark-bg);
            color: var(--white);
            padding: 3rem 0 1.5rem;
            margin-top: auto;
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-links h3 {
            color: var(--accent-color);
            font-size: 1.2rem;
            margin-bottom: 1rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.75rem;
        }
        .footer-links a:hover {
            color: var(--accent-color);
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #374151;
            font-size: 0.9rem;
            color: #9ca3af;
        }