* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #4CAF50;
            --secondary-color: #FF5722;
            --accent-color: #2196F3;
            --dark-color: #333;
            --light-color: #f8f9fa;
            --text-color: #444;
            --border-color: #ddd;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-color);
            background-color: var(--light-color);
            font-size: 16px;
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary-color);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-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 {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary-color);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo span {
            color: var(--secondary-color);
        }
        .logo:hover {
            opacity: 0.9;
        }
        nav ul {
            display: flex;
            list-style: none;
        }
        nav li {
            margin-left: 30px;
        }
        nav a {
            font-weight: 600;
            color: var(--dark-color);
            padding: 5px 0;
            position: relative;
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--primary-color);
            transition: var(--transition);
        }
        nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            cursor: pointer;
            font-size: 24px;
            color: var(--dark-color);
        }
        .breadcrumb {
            background-color: #f0f0f0;
            padding: 12px 0;
            font-size: 14px;
        }
        .breadcrumb-container {
            display: flex;
            align-items: center;
        }
        .breadcrumb a {
            color: #666;
        }
        .breadcrumb i {
            margin: 0 10px;
            color: #999;
        }
        main {
            padding: 40px 0;
            background-color: white;
        }
        .article-header {
            margin-bottom: 40px;
            text-align: center;
            padding-bottom: 30px;
            border-bottom: 1px solid var(--border-color);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--dark-color);
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            color: #777;
            font-size: 14px;
        }
        .article-meta i {
            margin-right: 5px;
        }
        .content-section {
            margin-bottom: 50px;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-color);
        }
        h3 {
            font-size: 1.5rem;
            color: var(--dark-color);
            margin: 30px 0 15px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .highlight {
            background-color: #f0f9ff;
            border-left: 4px solid var(--accent-color);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 5px 5px 0;
        }
        .tip-box {
            background-color: #f0fff0;
            border: 1px solid #c8e6c9;
            padding: 20px;
            border-radius: 8px;
            margin: 25px 0;
            display: flex;
            align-items: flex-start;
        }
        .tip-icon {
            color: var(--primary-color);
            font-size: 24px;
            margin-right: 15px;
            flex-shrink: 0;
        }
        .featured-image {
            width: 100%;
            margin: 30px 0;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 10px;
            font-size: 14px;
        }
        .interactive-section {
            background-color: #f9f9f9;
            padding: 40px;
            border-radius: 10px;
            margin: 40px 0;
            box-shadow: var(--shadow);
        }
        .interactive-title {
            display: flex;
            align-items: center;
            margin-bottom: 25px;
            color: var(--primary-color);
        }
        .interactive-title i {
            margin-right: 10px;
            font-size: 24px;
        }
        .search-form {
            display: flex;
            margin-bottom: 30px;
        }
        .search-input {
            flex-grow: 1;
            padding: 15px;
            border: 2px solid var(--primary-color);
            border-radius: 5px 0 0 5px;
            font-size: 16px;
        }
        .search-button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 5px 5px 0;
            cursor: pointer;
            font-size: 16px;
            transition: var(--transition);
        }
        .search-button:hover {
            background-color: #3d8b40;
        }
        .rating-system {
            margin-bottom: 30px;
        }
        .rating-title {
            margin-bottom: 15px;
            font-weight: 600;
        }
        .stars {
            display: flex;
            margin-bottom: 15px;
        }
        .star {
            font-size: 28px;
            color: #ddd;
            cursor: pointer;
            margin-right: 5px;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        .rating-submit {
            background-color: var(--accent-color);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 5px;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-submit:hover {
            background-color: #0d8bf2;
        }
        .comment-form {
            display: flex;
            flex-direction: column;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .form-input, .form-textarea {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid var(--border-color);
            border-radius: 5px;
            font-size: 16px;
            font-family: inherit;
        }
        .form-textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-button {
            align-self: flex-start;
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            transition: var(--transition);
        }
        .submit-button:hover {
            background-color: #e64a19;
        }
        .web-links {
            background-color: #f5f5f5;
            padding: 40px 0;
            margin-top: 50px;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
        }
        .web-link {
            background-color: white;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .web-link a {
            font-weight: 600;
            color: var(--dark-color);
            display: block;
        }
        .web-link a:hover {
            color: var(--primary-color);
        }
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 40px 0 20px;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }
        .copyright {
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid #555;
            width: 100%;
            color: #aaa;
            font-size: 14px;
        }
        @media (max-width: 992px) {
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .interactive-section {
                padding: 30px;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease;
            }
            nav.active {
                max-height: 300px;
                margin-top: 20px;
            }
            nav ul {
                flex-direction: column;
                width: 100%;
            }
            nav li {
                margin: 0;
                border-top: 1px solid #eee;
            }
            nav a {
                display: block;
                padding: 15px 0;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .interactive-section {
                padding: 20px;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.8rem;
            }
            .article-meta {
                flex-direction: column;
                gap: 10px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-input {
                border-radius: 5px;
                margin-bottom: 10px;
            }
            .search-button {
                border-radius: 5px;
                padding: 15px;
            }
        }
        @media print {
            header, .interactive-section, .web-links, footer {
                display: none;
            }
            body {
                font-size: 12pt;
                color: #000;
                background: none;
            }
            a {
                color: #000;
                text-decoration: underline;
            }
            .container {
                max-width: 100%;
                padding: 0;
            }
        }