* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #6a11cb;
            --secondary-color: #2575fc;
            --accent-color: #ff9a00;
            --text-dark: #333333;
            --text-light: #666666;
            --bg-light: #f8f9fa;
            --bg-white: #ffffff;
            --border-color: #e0e0e0;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: var(--bg-light);
            font-size: 1.05rem;
            overflow-x: hidden;
        }
        h1, h2, h3, h4 {
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 1rem;
            color: var(--primary-color);
        }
        h1 {
            font-size: 2.8rem;
            text-align: center;
            padding-top: 2rem;
            border-bottom: 3px solid var(--accent-color);
            padding-bottom: 1rem;
            margin-bottom: 2rem;
        }
        h2 {
            font-size: 2.2rem;
            border-left: 5px solid var(--secondary-color);
            padding-left: 1rem;
            margin-top: 3rem;
        }
        h3 {
            font-size: 1.8rem;
            color: var(--secondary-color);
            margin-top: 2rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        a {
            color: var(--secondary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-color);
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo a:hover {
            text-decoration: none;
            color: var(--accent-color);
        }
        .logo-icon {
            color: var(--accent-color);
        }
        .nav-desktop ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-desktop a {
            color: white;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: 4px;
        }
        .nav-desktop a:hover,
        .nav-desktop a.active {
            background-color: rgba(255, 255, 255, 0.15);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background-color: var(--primary-color);
            flex-direction: column;
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile ul {
            list-style: none;
            width: 100%;
        }
        .nav-mobile li {
            margin-bottom: 0.8rem;
        }
        .nav-mobile a {
            color: white;
            font-size: 1.2rem;
            display: block;
            padding: 0.8rem;
            border-radius: 4px;
        }
        .nav-mobile a:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            background-color: var(--bg-white);
            padding: 1rem 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.95rem;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin: 0 10px;
            color: var(--text-light);
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary-color);
        }
        main {
            background-color: var(--bg-white);
            padding: 2rem 0;
            border-radius: 10px;
            box-shadow: var(--shadow);
            margin: 2rem auto;
            overflow: hidden;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
            border-bottom: 1px dashed var(--border-color);
            margin-bottom: 2rem;
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .article-meta .author {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .author-img {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            object-fit: cover;
        }
        .featured-image {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            display: block;
        }
        .article-content {
            padding: 0 2rem;
        }
        .highlight-box {
            background: linear-gradient(to right, #f8f9fa, #e9ecef);
            border-left: 5px solid var(--accent-color);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .tip {
            background-color: #e7f4ff;
            border: 1px solid #b6daff;
            padding: 1rem;
            border-radius: 8px;
            margin: 1.5rem 0;
            display: flex;
            align-items: flex-start;
            gap: 15px;
        }
        .tip i {
            color: var(--secondary-color);
            font-size: 1.5rem;
            flex-shrink: 0;
        }
        .definition {
            background-color: #fff3cd;
            border: 1px solid #ffeaa7;
            padding: 1rem;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        .definition strong {
            color: #d35400;
        }
        .interaction-section {
            margin: 3rem 0;
            padding: 2rem;
            background-color: var(--bg-light);
            border-radius: 10px;
            border: 1px solid var(--border-color);
        }
        .interaction-section h3 {
            text-align: center;
            margin-bottom: 2rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--text-dark);
        }
        .form-control {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--secondary-color);
            box-shadow: 0 0 0 3px rgba(37, 117, 252, 0.1);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .btn {
            display: inline-block;
            padding: 0.8rem 2rem;
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            color: white;
            border: none;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(106, 17, 203, 0.2);
            text-decoration: none;
        }
        .btn:active {
            transform: translateY(-1px);
        }
        .rating-stars {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin: 1.5rem 0;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 2.5rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars label:hover,
        .rating-stars label:hover ~ label {
            color: #ffc107;
        }
        .rating-stars input:checked ~ label {
            color: #ffc107;
        }
        .footer-links {
            background-color: var(--bg-white);
            padding: 3rem 0 2rem;
            border-top: 1px solid var(--border-color);
        }
        .web-link {
            display: inline-block;
            margin: 0.8rem 1.5rem;
            padding: 0.8rem 1.5rem;
            background-color: var(--bg-light);
            border-radius: 30px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
        }
        .web-link:hover a {
            color: white;
        }
        .web-link a {
            color: var(--text-dark);
            font-weight: 500;
            white-space: nowrap;
        }
        .footer-links-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
        }
        footer {
            background-color: #222;
            color: #aaa;
            padding: 2.5rem 0;
            text-align: center;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1.5rem;
        }
        .copyright {
            font-size: 0.95rem;
            line-height: 1.6;
            max-width: 800px;
            margin: 0 auto;
        }
        .copyright a {
            color: var(--accent-color);
        }
        .social-links {
            display: flex;
            gap: 1.5rem;
            margin-top: 1rem;
        }
        .social-links a {
            color: #aaa;
            font-size: 1.5rem;
            transition: var(--transition);
        }
        .social-links a:hover {
            color: var(--accent-color);
            transform: translateY(-3px);
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
            .container { padding: 0 15px; }
            .article-content { padding: 0 1rem; }
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .hamburger { display: block; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.8rem; }
            .header-container { padding: 0 15px; }
            .article-meta { flex-direction: column; align-items: flex-start; gap: 1rem; }
            .featured-image { max-height: 300px; }
            .interaction-section { padding: 1.5rem; }
            .footer-links-container { justify-content: flex-start; padding-left: 1rem; }
            .web-link { margin: 0.5rem 1rem; }
        }
        @media (max-width: 480px) {
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
            body { font-size: 1rem; }
            .logo a { font-size: 1.8rem; }
            .rating-stars label { font-size: 2rem; }
            .btn { width: 100%; text-align: center; }
        }
        @media print {
            header, .breadcrumb, .interaction-section, .footer-links, footer, .hamburger { display: none; }
            body { font-size: 12pt; color: black; background: white; }
            main { box-shadow: none; margin: 0; padding: 0; }
            a { color: black; text-decoration: underline; }
            h1, h2, h3 { color: black; }
            .container { max-width: 100%; padding: 0; }
        }