* {
            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-color: #f8f9fa;
        }
        .header {
            background: linear-gradient(135deg, #2c3e50, #34495e);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 2rem;
            font-weight: bold;
            color: #e74c3c;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: #f39c12;
        }
        .search-form {
            display: flex;
            gap: 10px;
            margin: 1rem 0;
        }
        .search-input {
            padding: 10px 15px;
            border: none;
            border-radius: 25px;
            width: 300px;
            font-size: 1rem;
        }
        .search-btn {
            background: #e74c3c;
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 25px;
            cursor: pointer;
            transition: background 0.3s ease;
        }
        .search-btn:hover {
            background: #c0392b;
        }
        .nav {
            background: #34495e;
            padding: 1rem 0;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 2rem;
            flex-wrap: wrap;
        }
        .nav-link {
            color: white;
            text-decoration: none;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            transition: background 0.3s ease;
        }
        .nav-link:hover {
            background: #2c3e50;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .breadcrumb {
            background: #ecf0f1;
            padding: 1rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb-list {
            display: flex;
            list-style: none;
            gap: 0.5rem;
        }
        .breadcrumb-item:not(:last-child)::after {
            content: "›";
            margin-left: 0.5rem;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
            margin: 2rem 0;
        }
        .article {
            background: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        .article h1 {
            color: #2c3e50;
            font-size: 2.5rem;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article h2 {
            color: #34495e;
            font-size: 1.8rem;
            margin: 2rem 0 1rem 0;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e74c3c;
        }
        .article h3 {
            color: #2c3e50;
            font-size: 1.4rem;
            margin: 1.5rem 0 1rem 0;
        }
        .article p {
            margin-bottom: 1rem;
            text-align: justify;
            line-height: 1.8;
        }
        .highlight {
            background: #fff3cd;
            padding: 1rem;
            border-left: 4px solid #ffc107;
            margin: 1rem 0;
            border-radius: 5px;
        }
        .feature-list {
            list-style: none;
            margin: 1rem 0;
        }
        .feature-list li {
            padding: 0.5rem 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feature-list i {
            color: #27ae60;
        }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        .sidebar-widget {
            margin-bottom: 2rem;
        }
        .sidebar-widget h3 {
            color: #2c3e50;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e74c3c;
        }
        .rating-system {
            text-align: center;
            padding: 1rem;
            background: #f8f9fa;
            border-radius: 10px;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s ease;
        }
        .star:hover,
        .star.active {
            color: #f39c12;
        }
        .rating-btn {
            background: #27ae60;
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 25px;
            cursor: pointer;
            transition: background 0.3s ease;
        }
        .rating-btn:hover {
            background: #219a52;
        }
        .comment-system {
            margin-top: 2rem;
        }
        .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-input, .form-textarea {
            padding: 10px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-size: 1rem;
        }
        .form-textarea {
            min-height: 100px;
            resize: vertical;
        }
        .submit-btn {
            background: #3498db;
            color: white;
            border: none;
            padding: 12px 20px;
            border-radius: 5px;
            cursor: pointer;
            transition: background 0.3s ease;
        }
        .submit-btn:hover {
            background: #2980b9;
        }
        .web-links {
            background: #34495e;
            color: white;
            padding: 2rem 0;
            margin-top: 2rem;
        }
        .web-link {
            background: #2c3e50;
            padding: 1rem;
            margin: 0.5rem 0;
            border-radius: 5px;
            transition: background 0.3s ease;
        }
        .web-link:hover {
            background: #1a252f;
        }
        .web-link a {
            color: #ecf0f1;
            text-decoration: none;
            display: block;
        }
        .footer {
            background: #2c3e50;
            color: white;
            text-align: center;
            padding: 2rem 0;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin-bottom: 1rem;
            flex-wrap: wrap;
        }
        .footer-link {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer-link:hover {
            color: white;
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                gap: 1rem;
            }
            .search-input {
                width: 100%;
            }
            .hamburger {
                display: block;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                gap: 0.5rem;
            }
            .nav-list.active {
                display: flex;
            }
            .main-content {
                grid-template-columns: 1fr;
            }
            .article h1 {
                font-size: 2rem;
            }
            .footer-links {
                flex-direction: column;
                gap: 1rem;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.6s ease-out;
        }
        .text-center { text-align: center; }
        .text-bold { font-weight: bold; }
        .text-highlight { color: #e74c3c; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }