* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary-color: #1a5276;
            --secondary-color: #f39c12;
            --accent-color: #e74c3c;
            --text-color: #333;
            --light-bg: #f8f9fa;
            --dark-bg: #2c3e50;
            --white: #ffffff;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        body {
            color: var(--text-color);
            background-color: var(--light-bg);
            line-height: 1.6;
        }
        a {
            text-decoration: none;
            color: var(--primary-color);
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary-color);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        header {
            background-color: var(--white);
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
        }
        .logo span {
            color: var(--secondary-color);
        }
        .search-form {
            display: flex;
            width: 40%;
        }
        .search-form input {
            flex: 1;
            padding: 10px 15px;
            border: 1px solid #ddd;
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--primary-color);
            color: var(--white);
            border: none;
            padding: 0 15px;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: var(--secondary-color);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary-color);
            cursor: pointer;
        }
        nav {
            background-color: var(--dark-bg);
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            position: relative;
        }
        .nav-links a {
            display: block;
            color: var(--white);
            padding: 15px 20px;
            transition: var(--transition);
        }
        .nav-links a:hover {
            background-color: var(--primary-color);
        }
        .breadcrumb {
            padding: 10px 0;
            background-color: var(--light-bg);
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--primary-color);
        }
        .breadcrumb span {
            margin: 0 5px;
            color: #777;
        }
        main {
            padding: 30px 0;
        }
        article {
            background-color: var(--white);
            border-radius: 8px;
            box-shadow: var(--shadow);
            padding: 30px;
            margin-bottom: 30px;
        }
        h1 {
            font-size: 2.2rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            line-height: 1.3;
        }
        h2 {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin: 30px 0 15px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--secondary-color);
        }
        h3 {
            font-size: 1.4rem;
            color: var(--dark-bg);
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 15px;
            text-align: justify;
        }
        .highlight {
            background-color: #fff9e6;
            border-left: 4px solid var(--secondary-color);
            padding: 15px;
            margin: 20px 0;
            border-radius: 0 4px 4px 0;
        }
        .feature-list {
            list-style: none;
            margin: 20px 0;
        }
        .feature-list li {
            padding: 8px 0;
            padding-left: 30px;
            position: relative;
        }
        .feature-list li:before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--secondary-color);
            font-weight: bold;
        }
        .download-box {
            background-color: var(--light-bg);
            border: 1px solid #ddd;
            border-radius: 8px;
            padding: 20px;
            margin: 25px 0;
            text-align: center;
        }
        .download-btn {
            display: inline-block;
            background-color: var(--accent-color);
            color: var(--white);
            padding: 12px 25px;
            border-radius: 4px;
            font-weight: bold;
            margin: 10px 0;
            transition: var(--transition);
        }
        .download-btn:hover {
            background-color: #c0392b;
            color: var(--white);
        }
        .version-table {
            width: 100%;
            border-collapse: collapse;
            margin: 25px 0;
        }
        .version-table th, .version-table td {
            border: 1px solid #ddd;
            padding: 12px 15px;
            text-align: left;
        }
        .version-table th {
            background-color: var(--primary-color);
            color: var(--white);
        }
        .version-table tr:nth-child(even) {
            background-color: #f2f2f2;
        }
        .image-container {
            margin: 25px 0;
            text-align: center;
        }
        .article-image {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        .caption {
            font-style: italic;
            color: #666;
            margin-top: 10px;
            font-size: 0.9rem;
        }
        .comment-section {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid #ddd;
        }
        .comment-form {
            background-color: var(--light-bg);
            padding: 20px;
            border-radius: 8px;
            margin-bottom: 30px;
        }
        .form-group {
            margin-bottom: 15px;
        }
        .form-group label {
            display: block;
            margin-bottom: 5px;
            font-weight: 500;
        }
        .form-control {
            width: 100%;
            padding: 10px;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 1rem;
        }
        textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }
        .rating {
            display: flex;
            gap: 5px;
            margin: 10px 0;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 1.5rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating input:checked ~ label {
            color: #ddd;
        }
        .rating label:hover,
        .rating label:hover ~ label {
            color: var(--secondary-color);
        }
        .rating input:checked + label,
        .rating input:checked + label ~ label {
            color: var(--secondary-color);
        }
        .submit-btn {
            background-color: var(--primary-color);
            color: var(--white);
            border: none;
            padding: 12px 25px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 1rem;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background-color: var(--secondary-color);
        }
        .comments-list {
            margin-top: 30px;
        }
        .comment {
            background-color: var(--light-bg);
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 15px;
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 10px;
        }
        .comment-author {
            font-weight: bold;
            color: var(--primary-color);
        }
        .comment-date {
            color: #777;
            font-size: 0.9rem;
        }
        .comment-rating {
            color: var(--secondary-color);
            margin-bottom: 5px;
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
            margin: 40px 0;
        }
        .web-link {
            background-color: var(--white);
            padding: 15px;
            border-radius: 4px;
            box-shadow: var(--shadow);
            text-align: center;
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
        }
        footer {
            background-color: var(--dark-bg);
            color: var(--white);
            padding: 40px 0 20px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-section h3 {
            color: var(--white);
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #ddd;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 992px) {
            .web-links {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .logo {
                margin-bottom: 10px;
            }
            .search-form {
                width: 100%;
                order: 3;
                margin-top: 10px;
            }
            .mobile-menu-btn {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
            }
            .nav-links.active {
                display: flex;
            }
            .web-links {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 576px) {
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            article {
                padding: 20px;
            }
            .web-links {
                grid-template-columns: 1fr;
            }
            .version-table {
                font-size: 0.9rem;
            }
            .version-table th, .version-table td {
                padding: 8px 10px;
            }
        }