* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0,0,0,0.1);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        .logo {
            font-size: 2rem;
            font-weight: bold;
            color: #4a5568;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: #e53e3e;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        .nav-desktop a {
            text-decoration: none;
            color: #4a5568;
            font-weight: 500;
            transition: color 0.3s ease;
            padding: 0.5rem 1rem;
            border-radius: 5px;
        }
        .nav-desktop a:hover {
            color: #e53e3e;
            background: rgba(229, 62, 62, 0.1);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: #4a5568;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: white;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            box-shadow: 0 5px 20px rgba(0,0,0,0.1);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            padding: 1rem 2rem;
            text-decoration: none;
            color: #4a5568;
            border-bottom: 1px solid #e2e8f0;
            transition: background 0.3s ease;
        }
        .nav-mobile a:hover {
            background: #f7fafc;
        }
        .breadcrumb {
            background: rgba(255, 255, 255, 0.9);
            padding: 1rem 0;
            margin-top: 80px;
            border-bottom: 1px solid #e2e8f0;
        }
        .breadcrumb a {
            color: #718096;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: #e53e3e;
        }
        main {
            background: white;
            margin: 2rem auto;
            border-radius: 15px;
            box-shadow: 0 10px 40px rgba(0,0,0,0.1);
            overflow: hidden;
        }
        .article-header {
            background: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
            color: white;
            padding: 3rem 2rem;
            text-align: center;
        }
        .article-header h1 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin-top: 1rem;
            opacity: 0.9;
        }
        .article-content {
            padding: 3rem 2rem;
        }
        .article-section {
            margin-bottom: 3rem;
        }
        .article-section h2 {
            color: #2d3748;
            font-size: 2rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #e53e3e;
            display: inline-block;
        }
        .article-section h3 {
            color: #4a5568;
            font-size: 1.5rem;
            margin: 1.5rem 0 1rem 0;
        }
        .article-section p {
            margin-bottom: 1rem;
            text-align: justify;
            font-size: 1.1rem;
            line-height: 1.8;
        }
        .highlight-box {
            background: linear-gradient(135deg, #fed7e2 0%, #fbb6ce 100%);
            border-left: 5px solid #e53e3e;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 2rem 0;
        }
        .feature-card {
            background: #f7fafc;
            padding: 2rem;
            border-radius: 10px;
            text-align: center;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid #e2e8f0;
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .feature-card i {
            font-size: 3rem;
            color: #e53e3e;
            margin-bottom: 1rem;
        }
        .search-section {
            background: #f7fafc;
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
            text-align: center;
        }
        .search-form {
            display: flex;
            max-width: 500px;
            margin: 0 auto;
        }
        .search-form input {
            flex: 1;
            padding: 1rem;
            border: 2px solid #e2e8f0;
            border-radius: 5px 0 0 5px;
            font-size: 1rem;
        }
        .search-form button {
            background: #e53e3e;
            color: white;
            border: none;
            padding: 1rem 1.5rem;
            border-radius: 0 5px 5px 0;
            cursor: pointer;
            transition: background 0.3s ease;
        }
        .search-form button:hover {
            background: #c53030;
        }
        .comment-section {
            background: #f7fafc;
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .comment-form {
            display: grid;
            gap: 1rem;
            margin-bottom: 2rem;
        }
        .comment-form input,
        .comment-form textarea {
            padding: 1rem;
            border: 2px solid #e2e8f0;
            border-radius: 5px;
            font-size: 1rem;
            font-family: inherit;
        }
        .comment-form textarea {
            min-height: 120px;
            resize: vertical;
        }
        .comment-form button {
            background: #e53e3e;
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.3s ease;
        }
        .comment-form button:hover {
            background: #c53030;
        }
        .rating-section {
            text-align: center;
            padding: 2rem;
            background: linear-gradient(135deg, #fff5f5 0%, #fed7d7 100%);
            border-radius: 10px;
            margin: 2rem 0;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: #cbd5e0;
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .star:hover,
        .star.active {
            color: #f6ad55;
        }
        .footer-links {
            background: #2d3748;
            padding: 3rem 2rem;
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin-bottom: 2rem;
        }
        .web-link {
            background: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: 5px;
            transition: background 0.3s ease;
        }
        .web-link:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        .web-link a {
            color: #cbd5e0;
            text-decoration: none;
            display: block;
        }
        .web-link a:hover {
            color: white;
        }
        footer {
            background: #1a202c;
            color: #cbd5e0;
            text-align: center;
            padding: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .article-header h1 {
                font-size: 2rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input {
                border-radius: 5px;
                margin-bottom: 0.5rem;
            }
            .search-form button {
                border-radius: 5px;
            }
        }
        @media (max-width: 480px) {
            .article-header {
                padding: 2rem 1rem;
            }
            .article-content {
                padding: 2rem 1rem;
            }
            .article-section h2 {
                font-size: 1.5rem;
            }
        }