* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #2c3e50;
            --secondary-color: #e74c3c;
            --accent-color: #f39c12;
            --text-color: #333;
            --light-bg: #f8f9fa;
            --white: #ffffff;
            --shadow: 0 2px 10px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: var(--light-bg);
        }
        header {
            background: linear-gradient(135deg, var(--primary-color), #34495e);
            color: var(--white);
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: bold;
            text-decoration: none;
            color: var(--white);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .logo i {
            color: var(--accent-color);
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        .nav-desktop a {
            color: var(--white);
            text-decoration: none;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            transition: var(--transition);
        }
        .nav-desktop a:hover {
            background-color: rgba(255,255,255,0.1);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--white);
            font-size: 1.5rem;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--primary-color);
            flex-direction: column;
            padding: 1rem;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: var(--white);
            text-decoration: none;
            padding: 0.8rem 1rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            transition: var(--transition);
        }
        .nav-mobile a:hover {
            background-color: rgba(255,255,255,0.1);
            padding-left: 1.5rem;
        }
        .breadcrumb {
            max-width: 1200px;
            margin: 1rem auto;
            padding: 0 1rem;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-section {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 1rem;
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex: 1;
            padding: 0.8rem 1rem;
            border: 2px solid #ddd;
            border-radius: 25px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-input:focus {
            outline: none;
            border-color: var(--accent-color);
            box-shadow: 0 0 0 3px rgba(243, 156, 18, 0.1);
        }
        .search-btn {
            padding: 0.8rem 1.5rem;
            background: var(--accent-color);
            color: var(--white);
            border: none;
            border-radius: 25px;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-btn:hover {
            background: #e67e22;
            transform: translateY(-2px);
        }
        main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem 1rem;
            background: var(--white);
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 3px solid var(--accent-color);
        }
        .article-header h1 {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 2rem;
            color: #666;
            font-size: 0.9rem;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .content-section {
            margin-bottom: 3rem;
        }
        .content-section h2 {
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent-color);
            font-size: 1.8rem;
        }
        .content-section h3 {
            color: var(--secondary-color);
            margin: 1.5rem 0 1rem 0;
            font-size: 1.4rem;
        }
        .content-section p {
            margin-bottom: 1rem;
            text-align: justify;
            line-height: 1.8;
        }
        .highlight {
            background: linear-gradient(120deg, var(--accent-color) 0%, var(--accent-color) 100%);
            background-repeat: no-repeat;
            background-size: 100% 0.4em;
            background-position: 0 88%;
            font-weight: bold;
            padding: 0 0.2rem;
        }
        .tip-box {
            background: var(--light-bg);
            border-left: 4px solid var(--accent-color);
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 5px 5px 0;
        }
        .tip-box h4 {
            color: var(--primary-color);
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .image-container {
            text-align: center;
            margin: 2rem 0;
        }
        .article-image {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .article-image:hover {
            transform: scale(1.02);
        }
        .image-caption {
            margin-top: 0.5rem;
            font-style: italic;
            color: #666;
            font-size: 0.9rem;
        }
        .interactive-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: var(--white);
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
            text-align: center;
        }
        .interactive-section h3 {
            color: var(--white);
            margin-bottom: 1rem;
        }
        .rating-stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--accent-color);
            transform: scale(1.2);
        }
        .comment-section {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px solid #eee;
        }
        .comment-form {
            background: var(--light-bg);
            padding: 2rem;
            border-radius: 10px;
            margin-bottom: 2rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: bold;
            color: var(--primary-color);
        }
        .form-control {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid #ddd;
            border-radius: 5px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--accent-color);
            box-shadow: 0 0 0 3px rgba(243, 156, 18, 0.1);
        }
        textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background: var(--accent-color);
            color: var(--white);
            padding: 1rem 2rem;
            border: none;
            border-radius: 5px;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background: #e67e22;
            transform: translateY(-2px);
        }
        .footer-links {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 1rem;
        }
        .web-link {
            background: var(--white);
            margin-bottom: 1rem;
            padding: 1rem;
            border-radius: 5px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateX(5px);
            box-shadow: 0 4px 15px rgba(0,0,0,0.15);
        }
        .web-link a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
            display: block;
        }
        .web-link a:hover {
            color: var(--accent-color);
        }
        footer {
            background: var(--primary-color);
            color: var(--white);
            text-align: center;
            padding: 2rem 1rem;
            margin-top: 3rem;
        }
        .copyright {
            margin-top: 1rem;
            font-size: 0.9rem;
            opacity: 0.8;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .article-header h1 {
                font-size: 2rem;
            }
            .article-meta {
                flex-direction: column;
                gap: 0.5rem;
                align-items: center;
            }
            .header-container {
                flex-wrap: wrap;
            }
            .search-form {
                flex-direction: column;
            }
            .search-input,
            .search-btn {
                width: 100%;
                border-radius: 5px;
            }
            .content-section h2 {
                font-size: 1.5rem;
            }
            .content-section h3 {
                font-size: 1.2rem;
            }
            .interactive-section {
                padding: 1.5rem;
            }
            .rating-stars {
                flex-wrap: wrap;
            }
            .star {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .article-header h1 {
                font-size: 1.6rem;
            }
            .logo {
                font-size: 1.4rem;
            }
            .content-section {
                margin-bottom: 2rem;
            }
            .tip-box {
                padding: 1rem;
            }
            .comment-form {
                padding: 1rem;
            }
        }
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-in {
            animation: fadeIn 0.6s ease-out;
        }
        @media print {
            .nav-desktop,
            .hamburger,
            .search-section,
            .interactive-section,
            .comment-section,
            .footer-links,
            footer {
                display: none;
            }
            main {
                box-shadow: none;
                margin: 0;
                padding: 0;
            }
            .article-header {
                border-bottom: 2px solid #000;
            }
        }