* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #e63946;
            --secondary-color: #1d3557;
            --accent-color: #f1faee;
            --text-color: #333;
            --light-gray: #f8f9fa;
            --dark-gray: #6c757d;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: var(--accent-color);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--secondary-color), #457b9d);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 20px;
        }
        .logo {
            font-size: 2rem;
            font-weight: bold;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--primary-color);
        }
        .search-form {
            display: flex;
            gap: 10px;
        }
        .search-form input {
            padding: 10px 15px;
            border: none;
            border-radius: 25px;
            width: 300px;
            font-size: 1rem;
        }
        .search-form button {
            background: var(--primary-color);
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 25px;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover {
            background: #c1121f;
        }
        nav {
            background: var(--secondary-color);
            padding: 0 20px;
        }
        .nav-desktop {
            display: flex;
            list-style: none;
            justify-content: center;
        }
        .nav-desktop li {
            position: relative;
        }
        .nav-desktop a {
            color: white;
            text-decoration: none;
            padding: 15px 20px;
            display: block;
            transition: background 0.3s;
        }
        .nav-desktop a:hover {
            background: rgba(255,255,255,0.1);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: var(--secondary-color);
            position: absolute;
            width: 100%;
            top: 100%;
            left: 0;
            z-index: 1000;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: white;
            text-decoration: none;
            padding: 15px 20px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .breadcrumb {
            padding: 15px 20px;
            background: var(--light-gray);
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--secondary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 40px 0;
            background: white;
        }
        .article-header {
            text-align: center;
            margin-bottom: 40px;
            padding: 0 20px;
        }
        .article-header h1 {
            font-size: 2.5rem;
            color: var(--secondary-color);
            margin-bottom: 20px;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 20px;
            color: var(--dark-gray);
            font-size: 0.9rem;
        }
        .article-content {
            max-width: 800px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .article-section {
            margin-bottom: 40px;
        }
        .article-section h2 {
            color: var(--secondary-color);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary-color);
        }
        .article-section h3 {
            color: var(--secondary-color);
            margin: 25px 0 15px;
        }
        .article-section p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .highlight {
            background: #fff3cd;
            padding: 20px;
            border-left: 4px solid #ffc107;
            margin: 20px 0;
            border-radius: 0 5px 5px 0;
        }
        .feature-list {
            list-style: none;
            margin: 20px 0;
        }
        .feature-list li {
            padding: 10px 0;
            padding-left: 30px;
            position: relative;
        }
        .feature-list li:before {
            content: "✓";
            color: var(--primary-color);
            font-weight: bold;
            position: absolute;
            left: 0;
        }
        .article-image {
            width: 100%;
            max-width: 600px;
            height: auto;
            margin: 20px auto;
            display: block;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .download-button {
            display: inline-block;
            background: var(--primary-color);
            color: white;
            padding: 15px 30px;
            text-decoration: none;
            border-radius: 5px;
            font-weight: bold;
            margin: 20px 0;
            transition: transform 0.3s, background 0.3s;
        }
        .download-button:hover {
            background: #c1121f;
            transform: translateY(-2px);
        }
        .comments-section {
            margin-top: 60px;
            padding: 40px 20px;
            background: var(--light-gray);
            border-radius: 10px;
        }
        .comment-form, .rating-form {
            background: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            margin-bottom: 30px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 5px;
            font-weight: bold;
        }
        .form-group input, .form-group textarea, .form-group select {
            width: 100%;
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-size: 1rem;
        }
        .form-group textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-button {
            background: var(--secondary-color);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.3s;
        }
        .submit-button:hover {
            background: #152238;
        }
        .star-rating {
            display: flex;
            gap: 5px;
            margin: 10px 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating input:checked ~ label {
            color: #ffc107;
        }
        .footer-links {
            background: var(--secondary-color);
            padding: 40px 20px;
            color: white;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 15px;
            margin-bottom: 30px;
        }
        .web-link {
            background: rgba(255,255,255,0.1);
            padding: 15px;
            border-radius: 5px;
            transition: background 0.3s;
        }
        .web-link:hover {
            background: rgba(255,255,255,0.2);
        }
        .web-link a {
            color: white;
            text-decoration: none;
        }
        .web-link a:hover {
            text-decoration: underline;
        }
        footer {
            background: #1a1a1a;
            color: white;
            text-align: center;
            padding: 30px 20px;
        }
        .footer-content {
            max-width: 800px;
            margin: 0 auto;
        }
        .social-links {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin: 20px 0;
        }
        .social-links a {
            color: white;
            font-size: 1.5rem;
            transition: color 0.3s;
        }
        .social-links a:hover {
            color: var(--primary-color);
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                gap: 20px;
            }
            .search-form input {
                width: 100%;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 20px;
                right: 20px;
            }
            .article-header h1 {
                font-size: 2rem;
            }
            .article-meta {
                flex-direction: column;
                align-items: center;
                gap: 10px;
            }
        }
        @media (max-width: 480px) {
            .article-header h1 {
                font-size: 1.8rem;
            }
            .comment-form, .rating-form {
                padding: 20px;
            }
        }