* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #4f46e5;
            --primary-dark: #3730a3;
            --secondary: #10b981;
            --dark: #1f2937;
            --light: #f9fafb;
            --gray: #6b7280;
            --border: #e5e7eb;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --transition: all 0.3s ease;
        }
        body {
            color: var(--dark);
            background-color: #ffffff;
            line-height: 1.6;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul, ol {
            list-style-position: inside;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 0.5rem; }
        .mb-2 { margin-bottom: 1rem; }
        .mb-3 { margin-bottom: 1.5rem; }
        .mb-4 { margin-bottom: 2rem; }
        .mb-5 { margin-bottom: 3rem; }
        .mt-1 { margin-top: 0.5rem; }
        .mt-2 { margin-top: 1rem; }
        .mt-3 { margin-top: 1.5rem; }
        .mt-4 { margin-top: 2rem; }
        .mt-5 { margin-top: 3rem; }
        .py-1 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
        .py-2 { padding-top: 1rem; padding-bottom: 1rem; }
        .py-3 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
        .py-4 { padding-top: 2rem; padding-bottom: 2rem; }
        .py-5 { padding-top: 3rem; padding-bottom: 3rem; }
        .bold { font-weight: 700; }
        .highlight {
            background-color: #fef3c7;
            padding: 2px 6px;
            border-radius: 4px;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        header {
            background-color: #ffffff;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 20px;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
        }
        .logo i {
            margin-right: 10px;
            color: var(--secondary);
        }
        .desktop-nav ul {
            display: flex;
            gap: 2rem;
        }
        .desktop-nav a {
            font-weight: 600;
            color: var(--dark);
            padding: 0.5rem 0;
            border-bottom: 2px solid transparent;
        }
        .desktop-nav a:hover, .desktop-nav a.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }
        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--dark);
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            background-color: white;
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active {
            display: block;
        }
        .mobile-nav ul {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .mobile-nav a {
            display: block;
            padding: 0.5rem;
            font-weight: 600;
            border-left: 3px solid transparent;
        }
        .mobile-nav a:hover, .mobile-nav a.active {
            border-left-color: var(--primary);
            color: var(--primary);
            padding-left: 1rem;
        }
        .breadcrumb {
            background-color: var(--light);
            padding: 1rem 20px;
            font-size: 0.9rem;
            color: var(--gray);
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span.separator {
            margin: 0 8px;
        }
        .hero {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: white;
            padding: 3rem 20px;
            margin-bottom: 2rem;
        }
        .hero h1 {
            font-size: 2.5rem;
            line-height: 1.2;
            margin-bottom: 1rem;
        }
        .hero p {
            font-size: 1.1rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            opacity: 0.9;
        }
        .search-box {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .search-box input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1rem;
        }
        .search-box button {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 0 2rem;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-box button:hover {
            background-color: #0da271;
        }
        main {
            padding: 2rem 0;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            font-size: 1.1rem;
        }
        .article-content h1, .article-content h2, .article-content h3 {
            color: var(--dark);
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        .article-content h1 {
            font-size: 2.2rem;
            color: var(--primary);
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 0.5rem;
        }
        .article-content h2 {
            font-size: 1.8rem;
            color: var(--primary-dark);
        }
        .article-content h3 {
            font-size: 1.5rem;
        }
        .article-content p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .article-content ul, .article-content ol {
            margin-bottom: 1.5rem;
            padding-left: 1.5rem;
        }
        .article-content li {
            margin-bottom: 0.5rem;
        }
        .article-content blockquote {
            border-left: 5px solid var(--secondary);
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: var(--gray);
            background-color: var(--light);
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        .article-content img {
            margin: 2rem auto;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .infobox {
            background-color: var(--light);
            border-left: 5px solid var(--primary);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .infobox h4 {
            color: var(--primary);
            margin-bottom: 0.5rem;
        }
        .sidebar {
            background-color: var(--light);
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar h3 {
            color: var(--primary);
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--border);
        }
        .sidebar ul {
            list-style: none;
            padding-left: 0;
        }
        .sidebar li {
            margin-bottom: 1rem;
        }
        .sidebar a {
            display: block;
            padding: 0.8rem;
            background-color: white;
            border-radius: 6px;
            border-left: 4px solid var(--secondary);
            transition: var(--transition);
        }
        .sidebar a:hover {
            background-color: #e0e7ff;
            transform: translateX(5px);
        }
        .interaction-module {
            background-color: var(--light);
            padding: 2rem;
            border-radius: 10px;
            margin: 3rem 0;
            box-shadow: var(--shadow);
        }
        .interaction-module h2 {
            color: var(--primary);
            margin-bottom: 1.5rem;
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            margin-bottom: 1rem;
        }
        .rating-stars i {
            color: #fbbf24;
            cursor: pointer;
            font-size: 1.5rem;
            transition: var(--transition);
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        .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 1rem;
            border: 1px solid var(--border);
            border-radius: 6px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus, .form-group textarea:focus, .form-group select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
        }
        .btn {
            display: inline-block;
            background-color: var(--primary);
            color: white;
            padding: 0.8rem 2rem;
            border: none;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-secondary {
            background-color: var(--secondary);
        }
        .btn-secondary:hover {
            background-color: #0da271;
        }
        .web-links-section {
            margin: 4rem 0;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background-color: var(--light);
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 5px solid var(--secondary);
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: #e0e7ff;
            transform: translateY(-5px);
        }
        .web-link a {
            font-weight: 600;
            color: var(--primary);
        }
        .web-link a:hover {
            text-decoration: underline;
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            padding-bottom: 3rem;
        }
        .footer-col h4 {
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            color: var(--secondary);
            position: relative;
            padding-bottom: 0.5rem;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 50px;
            height: 2px;
            background-color: var(--primary);
        }
        .footer-col ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-col li {
            margin-bottom: 0.8rem;
        }
        .footer-col a {
            color: #d1d5db;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: white;
            padding-left: 5px;
        }
        .copyright {
            background-color: #111827;
            padding: 1.5rem 0;
            text-align: center;
            color: #9ca3af;
            font-size: 0.9rem;
            border-top: 1px solid #374151;
        }
        .social-links {
            display: flex;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: #374151;
            color: white;
            border-radius: 50%;
            transition: var(--transition);
        }
        .social-links a:hover {
            background-color: var(--primary);
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .header-container {
                padding: 1rem;
            }
            .desktop-nav {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .article-content h1 {
                font-size: 1.8rem;
            }
            .article-content h2 {
                font-size: 1.5rem;
            }
            .article-content h3 {
                font-size: 1.3rem;
            }
            .content-grid {
                gap: 2rem;
            }
        }