:root {
            --primary: #c62828;
            --primary-dark: #8e0000;
            --secondary: #1a237e;
            --dark: #0d1117;
            --light: #f5f5f5;
            --gray: #2d333b;
            --text: #e6edf3;
            --text-muted: #8b949e;
            --success: #2ea043;
            --warning: #d29922;
            --transition: all 0.3s ease;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
            --radius: 8px;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            background-color: var(--dark);
            color: var(--text);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: #58a6ff;
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: rgba(13, 17, 23, 0.95);
            border-bottom: 1px solid var(--gray);
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(10px);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo {
            font-size: 2rem;
            font-weight: 900;
            background: linear-gradient(90deg, var(--primary), #ff6b6b);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo:hover {
            text-decoration: none;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-links a {
            color: var(--text);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a:hover {
            color: var(--primary);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--text);
        }
        .search-container {
            margin-left: 2rem;
            position: relative;
        }
        .search-form {
            display: flex;
        }
        .search-input {
            padding: 10px 15px;
            border: 1px solid var(--gray);
            border-radius: var(--radius) 0 0 var(--radius);
            background-color: var(--dark);
            color: var(--text);
            width: 250px;
            outline: none;
        }
        .search-input:focus {
            border-color: var(--primary);
        }
        .search-btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: var(--primary-dark);
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: rgba(45, 51, 59, 0.5);
            font-size: 0.9rem;
            margin-bottom: 30px;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 10px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 10px;
            color: var(--text-muted);
        }
        main {
            padding: 30px 0;
        }
        .article-header {
            text-align: center;
            margin-bottom: 40px;
            padding-bottom: 30px;
            border-bottom: 1px solid var(--gray);
        }
        .article-header h1 {
            font-size: 2.8rem;
            margin-bottom: 20px;
            line-height: 1.2;
            color: #fff;
            text-shadow: 0 2px 4px rgba(0,0,0,0.5);
        }
        .meta-info {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
        }
        .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        article {
            font-size: 1.1rem;
        }
        article h2 {
            color: var(--primary);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--gray);
            font-size: 1.8rem;
        }
        article h3 {
            color: #ff6b6b;
            margin: 2rem 0 1rem;
            font-size: 1.5rem;
        }
        article p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        article strong {
            color: #ffcc00;
            font-weight: 700;
        }
        article em {
            color: var(--text-muted);
            font-style: italic;
        }
        .highlight-box {
            background: linear-gradient(135deg, var(--dark), var(--gray));
            border-left: 5px solid var(--primary);
            padding: 25px;
            border-radius: var(--radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .feature-list {
            list-style: none;
            margin: 1.5rem 0;
        }
        .feature-list li {
            padding: 10px 0 10px 35px;
            position: relative;
        }
        .feature-list li:before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--success);
            font-weight: bold;
            font-size: 1.2rem;
        }
        .image-container {
            margin: 2.5rem 0;
            text-align: center;
        }
        .article-img {
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--gray);
            max-width: 800px;
            margin: 0 auto;
        }
        .caption {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 10px;
            font-style: italic;
        }
        .download-cta {
            background: linear-gradient(to right, var(--primary-dark), var(--secondary));
            padding: 30px;
            border-radius: var(--radius);
            text-align: center;
            margin: 3rem 0;
            box-shadow: var(--shadow);
        }
        .download-btn {
            display: inline-block;
            background-color: #00c853;
            color: white;
            padding: 18px 45px;
            font-size: 1.3rem;
            font-weight: bold;
            border-radius: 50px;
            margin-top: 20px;
            text-transform: uppercase;
            letter-spacing: 1px;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .download-btn:hover {
            background-color: #00e676;
            transform: translateY(-3px);
            text-decoration: none;
            box-shadow: 0 10px 20px rgba(0, 200, 83, 0.3);
        }
        aside {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-widget {
            background-color: var(--gray);
            border-radius: var(--radius);
            padding: 25px;
            margin-bottom: 30px;
            box-shadow: var(--shadow);
        }
        .widget-title {
            color: var(--primary);
            font-size: 1.3rem;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--dark);
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 1.8rem;
            color: #ffcc00;
            margin: 15px 0;
            letter-spacing: 5px;
        }
        .rating-form label {
            display: block;
            margin: 10px 0 5px;
            font-weight: 500;
        }
        .rating-form select,
        .rating-form textarea {
            width: 100%;
            padding: 12px;
            margin-bottom: 15px;
            background-color: var(--dark);
            border: 1px solid #444;
            border-radius: var(--radius);
            color: var(--text);
            font-family: inherit;
        }
        .rating-form button {
            width: 100%;
            padding: 12px;
            background-color: var(--primary);
            color: white;
            border: none;
            border-radius: var(--radius);
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-form button:hover {
            background-color: var(--primary-dark);
        }
        .comments-section {
            margin-top: 50px;
            padding-top: 30px;
            border-top: 1px solid var(--gray);
        }
        .comment-form {
            background-color: var(--gray);
            padding: 30px;
            border-radius: var(--radius);
            margin-bottom: 40px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 15px;
            background-color: var(--dark);
            border: 1px solid #444;
            border-radius: var(--radius);
            color: var(--text);
            font-family: inherit;
        }
        .submit-comment {
            background-color: var(--secondary);
            color: white;
            padding: 15px 40px;
            border: none;
            border-radius: var(--radius);
            font-weight: bold;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .submit-comment:hover {
            background-color: #283593;
        }
        .comment {
            background-color: var(--gray);
            border-radius: var(--radius);
            padding: 25px;
            margin-bottom: 25px;
            border-left: 4px solid var(--primary);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
            flex-wrap: wrap;
            gap: 10px;
        }
        .comment-author {
            font-weight: bold;
            color: #ffcc00;
        }
        .comment-date {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .web-links-section {
            background-color: var(--dark);
            padding: 40px 0;
            margin-top: 50px;
            border-top: 1px solid var(--gray);
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
        }
        .web-link {
            background-color: var(--gray);
            padding: 20px;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: #3c444d;
            transform: translateY(-5px);
        }
        footer {
            background-color: #0a0d12;
            padding: 50px 0 20px;
            border-top: 1px solid var(--gray);
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 900;
            color: var(--primary);
            margin-bottom: 20px;
        }
        .footer-about p {
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .social-links {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        .social-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: var(--gray);
            border-radius: 50%;
            color: var(--text);
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .social-icon:hover {
            background-color: var(--primary);
            color: white;
            text-decoration: none;
            transform: scale(1.1);
        }
        .footer-heading {
            color: var(--light);
            font-size: 1.3rem;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-heading::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 50px;
            height: 2px;
            background-color: var(--primary);
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid var(--gray);
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .nav-links,
            .search-container {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .header-container {
                padding: 15px 20px;
            }
            .article-header h1 {
                font-size: 2rem;
            }
            .search-input {
                width: 200px;
            }
            .mobile-menu {
                display: flex !important;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: var(--dark);
                border-top: 1px solid var(--gray);
                padding: 20px;
                box-shadow: var(--shadow);
            }
            .mobile-menu .nav-links {
                display: flex;
                flex-direction: column;
                gap: 1rem;
                margin-bottom: 20px;
            }
            .mobile-menu .search-container {
                display: block;
                width: 100%;
                margin-left: 0;
            }
            .search-form {
                flex-direction: column;
            }
            .search-input,
            .search-btn {
                border-radius: var(--radius);
                width: 100%;
            }
            .search-input {
                margin-bottom: 10px;
            }
        }
        @media (max-width: 480px) {
            .article-header h1 {
                font-size: 1.7rem;
            }
            .download-btn {
                padding: 15px 30px;
                font-size: 1.1rem;
            }
            .breadcrumb ol {
                font-size: 0.8rem;
            }
        }