* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary-dark: #1a365d;
            --primary: #2c5282;
            --primary-light: #4299e1;
            --accent: #e53e3e;
            --accent-light: #fc8181;
            --light: #f7fafc;
            --gray: #718096;
            --dark: #2d3748;
            --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;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f8f9fa;
            color: var(--dark);
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo a {
            font-size: 2rem;
            font-weight: 800;
            color: white;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
        }
        .logo i {
            margin-right: 10px;
            color: var(--accent-light);
        }
        nav ul {
            display: flex;
            list-style: none;
        }
        nav ul li {
            margin-left: 30px;
        }
        nav ul li a {
            color: white;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
        }
        nav ul li a:hover, nav ul li a.active {
            color: var(--accent-light);
            border-bottom-color: var(--accent-light);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            background: transparent;
            border: none;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background: white;
            margin: 3px 0;
            transition: var(--transition);
        }
        .breadcrumb {
            background-color: #edf2f7;
            padding: 12px 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin: 0 10px;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            flex: 1;
            padding: 40px 0;
        }
        article {
            background: white;
            border-radius: 10px;
            padding: 40px;
            box-shadow: var(--shadow);
            margin-bottom: 40px;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-dark);
            margin-bottom: 20px;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--accent-light);
        }
        h3 {
            font-size: 1.5rem;
            color: var(--dark);
            margin: 30px 0 15px;
        }
        p {
            margin-bottom: 1.5em;
            font-size: 1.1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 30px;
        }
        strong {
            color: var(--primary-dark);
            font-weight: 700;
        }
        em {
            font-style: italic;
            color: var(--gray);
        }
        blockquote {
            border-left: 5px solid var(--accent);
            padding-left: 25px;
            margin: 30px 0;
            font-style: italic;
            color: var(--dark);
            background: #fef2f2;
            padding: 20px;
            border-radius: 0 10px 10px 0;
        }
        ul, ol {
            margin-left: 30px;
            margin-bottom: 1.5em;
        }
        li {
            margin-bottom: 10px;
        }
        .article-img {
            margin: 30px auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            max-width: 800px;
        }
        .article-img img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .article-img:hover img {
            transform: scale(1.03);
        }
        .article-img figcaption {
            text-align: center;
            padding: 10px;
            font-style: italic;
            color: var(--gray);
            background: #f1f5f9;
        }
        .interactive-box {
            background: linear-gradient(to right, #e6f7ff, #f0f9ff);
            border-left: 5px solid var(--primary-light);
            padding: 25px;
            margin: 40px 0;
            border-radius: 0 10px 10px 0;
        }
        .interactive-box h3 {
            color: var(--primary);
            margin-top: 0;
        }
        form {
            margin-top: 20px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark);
        }
        input, textarea, select {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #cbd5e0;
            border-radius: 6px;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.2);
        }
        button, .btn {
            background: linear-gradient(to right, var(--primary), var(--primary-dark));
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-block;
        }
        button:hover, .btn:hover {
            background: linear-gradient(to right, var(--primary-dark), #1a365d);
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
        }
        .rating {
            display: flex;
            align-items: center;
            margin: 20px 0;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            margin-right: 5px;
        }
        .rating input:checked ~ label,
        .rating label:hover,
        .rating label:hover ~ label {
            color: #ffc107;
        }
        .search-container {
            background: var(--light);
            padding: 20px;
            border-radius: 10px;
            margin: 30px 0;
            text-align: center;
        }
        .search-container h3 {
            margin-top: 0;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-form input {
            flex: 1;
            border-radius: 6px 0 0 6px;
        }
        .search-form button {
            border-radius: 0 6px 6px 0;
            padding: 12px 25px;
        }
        .comments {
            margin-top: 50px;
            border-top: 2px solid #e2e8f0;
            padding-top: 30px;
        }
        .comment {
            background: #f8fafc;
            border-radius: 8px;
            padding: 20px;
            margin-bottom: 20px;
            border-left: 4px solid var(--primary-light);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 10px;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .long-tail-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            margin: 40px 0;
        }
        .web-link {
            background: white;
            padding: 15px;
            border-radius: 6px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        .web-link a {
            font-weight: 600;
            color: var(--primary);
            display: block;
        }
        footer {
            background: var(--primary-dark);
            color: white;
            padding: 50px 0 20px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: var(--accent-light);
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #cbd5e0;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #2d3748;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            article { padding: 30px; }
        }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            nav { display: none; width: 100%; order: 3; margin-top: 20px; }
            nav.active { display: block; }
            nav ul { flex-direction: column; }
            nav ul li { margin: 10px 0; }
            .hamburger { display: flex; }
            .search-form { flex-direction: column; }
            .search-form input { border-radius: 6px; margin-bottom: 10px; }
            .search-form button { border-radius: 6px; width: 100%; }
        }
        @media (max-width: 576px) {
            .container { padding: 0 15px; }
            article { padding: 20px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .footer-content { grid-template-columns: 1fr; }
        }
        .text-center { text-align: center; }
        .mt-4 { margin-top: 40px; }
        .mb-4 { margin-bottom: 40px; }
        .emoji { font-size: 1.2em; }