* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #2c3e50;
            --secondary-color: #e74c3c;
            --accent-color: #3498db;
            --light-color: #ecf0f1;
            --dark-color: #2c3e50;
            --text-color: #333;
            --light-text: #7f8c8d;
            --border-color: #ddd;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
            --border-radius: 8px;
            --container-width: 1200px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: #f9f9f9;
            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;
            margin-bottom: 1.5rem;
            border-bottom: 3px solid var(--secondary-color);
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2.2rem;
            margin-top: 2.5rem;
            padding-left: 0.5rem;
            border-left: 4px solid var(--accent-color);
        }
        h3 {
            font-size: 1.8rem;
            margin-top: 2rem;
            color: var(--dark-color);
        }
        h4 {
            font-size: 1.4rem;
            margin-top: 1.5rem;
            color: var(--dark-color);
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--primary-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: 2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            text-transform: uppercase;
            letter-spacing: 1px;
            transition: var(--transition);
        }
        .logo a:hover {
            color: var(--secondary-color);
        }
        .logo span {
            color: var(--secondary-color);
        }
        .main-nav {
            display: flex;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .main-nav a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--secondary-color);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: white;
            border-radius: 2px;
            transition: var(--transition);
        }
        .breadcrumb {
            background-color: var(--light-color);
            padding: 0.8rem 0;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 0.5rem;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb a {
            color: var(--accent-color);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 0.5rem;
            color: var(--light-text);
        }
        .search-container {
            background: linear-gradient(135deg, var(--accent-color), #2980b9);
            padding: 2rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: none;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
            outline: none;
        }
        .search-button {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-button:hover {
            background-color: #c0392b;
        }
        main {
            padding: 3rem 0;
            background-color: white;
        }
        .article-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .article-content {
                grid-template-columns: 1fr;
            }
        }
        .content-block {
            margin-bottom: 2.5rem;
            padding-bottom: 2rem;
            border-bottom: 1px solid var(--border-color);
        }
        .highlight-box {
            background-color: var(--light-color);
            padding: 1.5rem;
            border-left: 4px solid var(--secondary-color);
            margin: 1.5rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .image-container {
            margin: 2rem 0;
            text-align: center;
        }
        .featured-image {
            max-width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .image-caption {
            font-style: italic;
            color: var(--light-text);
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .sidebar {
            background-color: var(--light-color);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        .sidebar-section {
            margin-bottom: 2rem;
        }
        .sidebar-title {
            font-size: 1.3rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--border-color);
        }
        .interaction-section {
            background-color: white;
            padding: 2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin-top: 3rem;
        }
        .rating-container {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 2rem;
        }
        .stars {
            display: flex;
            gap: 0.2rem;
        }
        .star {
            color: #ddd;
            font-size: 1.5rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #f39c12;
        }
        .comment-form,
        .rating-form {
            margin-bottom: 2rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--primary-color);
        }
        .form-input,
        .form-textarea {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-input:focus,
        .form-textarea:focus {
            outline: none;
            border-color: var(--accent-color);
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
        }
        .form-textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-button {
            background-color: var(--accent-color);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .submit-button:hover {
            background-color: #2980b9;
            transform: translateY(-2px);
        }
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 3rem 0 1.5rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: white;
            font-size: 1.4rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--secondary-color);
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: var(--border-radius);
            margin-bottom: 1rem;
            transition: var(--transition);
        }
        friend-link:hover {
            background-color: rgba(255, 255, 255, 0.15);
            transform: translateX(5px);
        }
        friend-link a {
            color: white;
            text-decoration: none;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #bdc3c7;
            font-size: 0.9rem;
        }
        .text-bold {
            font-weight: 700;
            color: var(--primary-color);
        }
        .text-highlight {
            background-color: rgba(231, 76, 60, 0.1);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            color: var(--secondary-color);
            font-weight: 600;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .last-updated {
            background-color: var(--light-color);
            padding: 1rem;
            border-radius: var(--border-radius);
            margin: 1rem 0;
            font-style: italic;
            color: var(--light-text);
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            h4 { font-size: 1.2rem; }
            .header-container {
                flex-wrap: wrap;
            }
            .hamburger {
                display: flex;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                margin-top: 1rem;
                gap: 0.5rem;
            }
            .main-nav.active {
                display: flex;
            }
            .main-nav a {
                padding: 0.8rem;
                text-align: center;
                border: 1px solid rgba(255, 255, 255, 0.2);
            }
            .breadcrumb ol {
                flex-wrap: wrap;
            }
            .article-content {
                gap: 2rem;
            }
        }
        @media print {
            header, .search-container, .sidebar, .interaction-section, footer {
                display: none;
            }
            body {
                background-color: white;
                color: black;
            }
            .container {
                max-width: 100%;
                padding: 0;
            }
            h1, h2, h3, h4 {
                color: black;
            }
        }