* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #1e3a8a;
            --secondary: #dc2626;
            --accent: #f59e0b;
            --light: #f8fafc;
            --dark: #0f172a;
            --gray: #64748b;
            --light-gray: #e2e8f0;
            --transition: all 0.3s ease;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --radius: 8px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background-color: #ffffff;
            overflow-x: hidden;
        }
        h1, h2, h3, h4 {
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 1rem;
            color: var(--primary);
        }
        h1 {
            font-size: 2.5rem;
            margin-top: 1.5rem;
        }
        h2 {
            font-size: 2rem;
            border-bottom: 3px solid var(--accent);
            padding-bottom: 0.5rem;
            margin-top: 2.5rem;
        }
        h3 {
            font-size: 1.5rem;
            color: var(--secondary);
            margin-top: 2rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.125rem;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        strong {
            color: var(--secondary);
        }
        em {
            color: var(--gray);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        header {
            background-color: var(--primary);
            color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            color: white;
            font-size: 2rem;
            font-weight: 900;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .logo span {
            color: var(--accent);
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        nav a:hover {
            color: var(--accent);
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--accent);
            transition: var(--transition);
        }
        nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            cursor: pointer;
            font-size: 1.8rem;
        }
        .breadcrumb {
            background-color: var(--light);
            padding: 1rem 0;
            border-bottom: 1px solid var(--light-gray);
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin: 0 0.5rem;
            color: var(--gray);
        }
        .search-container {
            background: linear-gradient(135deg, var(--primary), #2d4ba0);
            padding: 2rem;
            border-radius: var(--radius);
            margin: 2rem auto;
            text-align: center;
            color: white;
        }
        .search-box {
            display: flex;
            max-width: 600px;
            margin: 1rem auto 0;
        }
        .search-box input {
            flex: 1;
            padding: 1rem;
            border: none;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
        }
        .search-box button {
            background-color: var(--accent);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-box button:hover {
            background-color: #e67e22;
        }
        main {
            padding: 2rem 0;
        }
        .article-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .article-content {
                grid-template-columns: 1fr;
            }
        }
        .sidebar {
            background-color: var(--light);
            padding: 2rem;
            border-radius: var(--radius);
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        .sidebar h3 {
            margin-top: 0;
        }
        .sidebar ul {
            list-style: none;
        }
        .sidebar li {
            margin-bottom: 1rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid var(--light-gray);
        }
        .price-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .price-table th, .price-table td {
            padding: 1rem;
            text-align: left;
            border: 1px solid var(--light-gray);
        }
        .price-table th {
            background-color: var(--primary);
            color: white;
        }
        .price-table tr:nth-child(even) {
            background-color: var(--light);
        }
        .price-table tr:hover {
            background-color: #f1f5f9;
        }
        .callout-box {
            background-color: #f0f9ff;
            border-left: 5px solid var(--primary);
            padding: 2rem;
            margin: 2.5rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .highlight {
            background-color: #fef3c7;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .article-image {
            width: 100%;
            height: auto;
            border-radius: var(--radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
            transition: transform 0.5s ease;
        }
        .article-image:hover {
            transform: scale(1.02);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: -1rem;
            margin-bottom: 2rem;
        }
        .user-interaction {
            background-color: var(--light);
            padding: 2.5rem;
            border-radius: var(--radius);
            margin: 3rem 0;
        }
        .rating-form, .comment-form {
            margin-top: 2rem;
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: var(--light-gray);
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating label:hover,
        .star-rating input:checked ~ label {
            color: var(--accent);
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid var(--light-gray);
            border-radius: var(--radius);
            font-size: 1rem;
        }
        .form-group textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: var(--radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background-color: var(--secondary);
            transform: translateY(-2px);
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 3rem 0;
            padding: 2rem;
            background-color: var(--light);
            border-radius: var(--radius);
        }
        .web-link {
            background-color: white;
            padding: 1.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 900;
            margin-bottom: 1rem;
        }
        .footer-logo span {
            color: var(--accent);
        }
        .footer-links h4 {
            color: white;
            margin-bottom: 1.5rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #cbd5e1;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #334155;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            nav ul {
                position: fixed;
                top: 80px;
                left: -100%;
                flex-direction: column;
                background-color: var(--primary);
                width: 100%;
                text-align: center;
                padding: 2rem 0;
                transition: 0.5s;
                box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
            }
            nav.active ul {
                left: 0;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .search-box {
                flex-direction: column;
            }
            .search-box input,
            .search-box button {
                width: 100%;
                border-radius: var(--radius);
                margin-bottom: 0.5rem;
            }
            .web-links {
                grid-template-columns: 1fr;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.8s ease forwards;
        }
        @media print {
            header, footer, .sidebar, .user-interaction, .search-container {
                display: none;
            }
            body {
                color: black;
                background: white;
            }
            .article-content {
                grid-template-columns: 1fr;
            }
        }