:root {
            --primary-color: #1e6cb3; 
            --secondary-color: #ff9f1c; 
            --accent-color: #2ecc71; 
            --dark-color: #2c3e50;
            --light-color: #ecf0f1;
            --text-color: #333;
            --text-light: #777;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --border-radius: 8px;
            --transition: all 0.3s ease;
            --max-content-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: var(--text-color);
            background-color: #f9f9f9;
            overflow-x: hidden;
        }
        .site-header {
            background: linear-gradient(135deg, var(--dark-color), var(--primary-color));
            color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            max-width: var(--max-content-width);
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .my-logo:hover {
            color: var(--secondary-color);
            transform: translateY(-2px);
        }
        .my-logo i {
            color: var(--secondary-color);
        }
        .main-nav {
            display: flex;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
            transition: var(--transition);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--secondary-color);
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after,
        .main-nav a.active::after {
            width: 100%;
        }
        .main-nav a:hover {
            color: var(--secondary-color);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--light-color);
            padding: 0.8rem 1.5rem;
            font-size: 0.9rem;
            border-bottom: 1px solid #ddd;
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-container {
            max-width: var(--max-content-width);
            margin: 2rem auto;
            padding: 0 1.5rem;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .search-form input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1rem;
            outline: none;
        }
        .search-form button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 1.8rem;
            cursor: pointer;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #155a94;
        }
        .main-content {
            max-width: var(--max-content-width);
            margin: 0 auto;
            padding: 2rem 1.5rem;
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin-bottom: 3rem;
        }
        article {
            max-width: 900px;
            margin: 0 auto;
        }
        h1 {
            color: var(--dark-color);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 4px solid var(--secondary-color);
            padding-bottom: 0.5rem;
        }
        h2 {
            color: var(--primary-color);
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            padding-top: 1rem;
        }
        h3 {
            color: var(--dark-color);
            font-size: 1.6rem;
            margin: 2rem 0 1rem;
        }
        h4 {
            color: #555;
            font-size: 1.3rem;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .intro {
            font-size: 1.2rem;
            color: var(--text-color);
            background: linear-gradient(to right, #f8f9fa, #e9ecef);
            padding: 1.5rem;
            border-left: 5px solid var(--accent-color);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fff9e6;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            border-left: 4px solid var(--secondary-color);
            margin: 2rem 0;
        }
        .highlight strong {
            color: var(--primary-color);
        }
        .content-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin: 2rem auto;
            display: block;
            transition: transform 0.5s ease;
        }
        .content-img:hover {
            transform: scale(1.01);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            margin-top: 0.5rem;
            margin-bottom: 2rem;
        }
        .quote {
            font-style: italic;
            font-size: 1.3rem;
            color: var(--primary-color);
            text-align: center;
            padding: 2rem;
            margin: 3rem 0;
            border-top: 2px solid #eee;
            border-bottom: 2px solid #eee;
            position: relative;
        }
        .quote::before {
            content: '"';
            font-size: 4rem;
            color: #eee;
            position: absolute;
            top: -10px;
            left: 20px;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.7rem;
        }
        a.content-link {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted var(--primary-color);
            transition: var(--transition);
        }
        a.content-link:hover {
            color: var(--secondary-color);
            border-bottom-style: solid;
        }
        .last-updated {
            text-align: right;
            font-size: 0.9rem;
            color: var(--text-light);
            margin-top: 3rem;
            padding-top: 1rem;
            border-top: 1px solid #eee;
        }
        .user-interaction {
            background-color: #f8f9fa;
            padding: 2.5rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
        }
        .interaction-title {
            color: var(--dark-color);
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .rating-container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1.5rem;
            margin-bottom: 2rem;
        }
        .stars {
            display: flex;
            gap: 5px;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        .interaction-form {
            display: grid;
            gap: 1.5rem;
            margin-top: 2rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark-color);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 0.8rem 1rem;
            border: 1px solid #ccc;
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(30, 108, 179, 0.1);
        }
        .btn-submit {
            background: linear-gradient(to right, var(--primary-color), #2a7bc8);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            justify-self: start;
        }
        .btn-submit:hover {
            background: linear-gradient(to right, #155a94, #1e6cb3);
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
        }
        .site-footer {
            background-color: var(--dark-color);
            color: white;
            padding: 3rem 1.5rem 1.5rem;
        }
        .footer-container {
            max-width: var(--max-content-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-section h3 {
            color: var(--secondary-color);
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #ddd;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 1rem;
            border-radius: var(--border-radius);
            margin-bottom: 1rem;
            transition: var(--transition);
        }
        friend-link a {
            color: #ddd;
            text-decoration: none;
            font-weight: 600;
        }
        friend-link:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            .header-container { flex-wrap: wrap; }
            .main-nav { order: 3; width: 100%; margin-top: 1rem; display: none; flex-direction: column; gap: 0.5rem; }
            .main-nav.active { display: flex; }
            .hamburger { display: block; }
        }
        @media (max-width: 768px) {
            html { font-size: 14px; }
            h1 { font-size: 2rem; }
            .main-content { padding: 1.5rem 1rem; }
            .user-interaction { padding: 1.5rem; }
            .footer-container { grid-template-columns: 1fr; }
            .quote { font-size: 1.1rem; padding: 1.5rem; }
        }
        @media (max-width: 480px) {
            .search-form { flex-direction: column; border-radius: var(--border-radius); }
            .search-form input, .search-form button { width: 100%; border-radius: 0; }
            .rating-container { flex-direction: column; align-items: flex-start; }
        }
        @media print {
            .site-header, .search-container, .user-interaction, .site-footer { display: none; }
            body { background: white; color: black; }
            .main-content { box-shadow: none; padding: 0; }
            a { color: black; text-decoration: underline; }
        }