:root {
            --primary: #4f46e5;
            --secondary: #10b981;
            --accent: #f59e0b;
            --dark: #1f2937;
            --light: #f9fafb;
            --gray: #6b7280;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--light);
            color: var(--dark);
            line-height: 1.7;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        .logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .logo:hover {
            opacity: 0.9;
        }
        .search-form {
            display: flex;
            flex: 0 1 400px;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.75rem 1rem;
            border: 2px solid #e5e7eb;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-input:focus {
            border-color: var(--primary);
        }
        .search-btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: #4338ca;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            cursor: pointer;
            color: var(--dark);
        }
        nav {
            background-color: var(--dark);
        }
        .nav-links {
            display: flex;
            list-style: none;
            justify-content: center;
        }
        .nav-links li {
            position: relative;
        }
        .nav-links a {
            color: white;
            padding: 1rem 1.5rem;
            display: block;
            transition: var(--transition);
            font-weight: 500;
        }
        .nav-links a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--accent);
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #f3f4f6;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 2rem 0;
        }
        article {
            background-color: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
        }
        h1 {
            font-size: 2.5rem;
            color: var(--dark);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--accent);
        }
        h3 {
            font-size: 1.5rem;
            color: var(--secondary);
            margin: 1.5rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fef3c7;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .puzzle-image {
            width: 100%;
            max-width: 600px;
            height: auto;
            border-radius: 10px;
            margin: 2rem auto;
            display: block;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
            transition: transform 0.5s ease;
        }
        .puzzle-image:hover {
            transform: scale(1.02);
        }
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .solution-card {
            background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
            padding: 1.5rem;
            border-radius: 10px;
            border-left: 5px solid var(--primary);
            transition: var(--transition);
        }
        .solution-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        .interview {
            background-color: #f8fafc;
            border-left: 5px solid var(--secondary);
            padding: 2rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .interview q {
            font-style: italic;
            color: var(--dark);
            display: block;
            margin-bottom: 1rem;
        }
        .interactive-section {
            margin: 3rem 0;
            padding: 2rem;
            background: linear-gradient(135deg, #fdf4ff, #faf5ff);
            border-radius: 12px;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            max-width: 600px;
            margin-top: 1.5rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #d1d5db;
            cursor: pointer;
        }
        .stars .active {
            color: var(--accent);
        }
        textarea, input[type="text"], input[type="email"] {
            width: 100%;
            padding: 1rem;
            border: 2px solid #e5e7eb;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        textarea:focus, input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
        }
        .btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            align-self: flex-start;
        }
        .btn:hover {
            background-color: #4338ca;
            transform: translateY(-2px);
        }
        .btn-secondary {
            background-color: var(--secondary);
        }
        .btn-secondary:hover {
            background-color: #0da271;
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 3rem 0;
        }
        .web-link {
            background-color: white;
            padding: 1rem 1.5rem;
            border-radius: 8px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: var(--primary);
            color: white;
            transform: translateX(5px);
        }
        .web-link a {
            display: block;
            font-weight: 500;
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4b5563;
            font-size: 0.9rem;
            color: #9ca3af;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .header-top { flex-wrap: wrap; }
            .search-form { order: 3; flex: 1 1 100%; margin-top: 1rem; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: var(--dark);
                box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
            }
            .nav-links.active { display: flex; }
            .nav-links a { padding: 1rem; border-bottom: 1px solid #374151; }
            article { padding: 1.5rem; }
            .solution-grid { grid-template-columns: 1fr; }
            .footer-content { flex-direction: column; }
        }
        @media (max-width: 480px) {
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
            .container { padding: 0 15px; }
            .interactive-section { padding: 1.5rem; }
        }