* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #2a4365;
            --secondary: #e53e3e;
            --accent: #f6ad55;
            --light: #f7fafc;
            --dark: #1a202c;
            --gray: #718096;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        body {
            background-color: var(--light);
            color: var(--dark);
            line-height: 1.7;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary), #1a365d);
            color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo span {
            color: white;
        }
        .search-box {
            display: flex;
            background: white;
            border-radius: 50px;
            overflow: hidden;
            width: 300px;
        }
        .search-box input {
            flex: 1;
            border: none;
            padding: 0.8rem 1.2rem;
            outline: none;
        }
        .search-box button {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: #c53030;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
            margin-top: 1rem;
            flex-wrap: wrap;
        }
        nav a {
            padding: 0.5rem 1rem;
            border-radius: 5px;
            transition: var(--transition);
            font-weight: 600;
        }
        nav a:hover, nav a.active {
            background: rgba(255, 255, 255, 0.2);
            color: var(--accent);
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--accent);
        }
        .breadcrumb span {
            margin: 0 5px;
        }
        main {
            padding: 2rem 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
        }
        article {
            background: white;
            border-radius: 10px;
            padding: 2rem;
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--primary);
            font-size: 2.5rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h2 {
            color: var(--secondary);
            font-size: 1.8rem;
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--accent);
        }
        h3 {
            color: var(--primary);
            font-size: 1.4rem;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .highlight {
            background: #fffaf0;
            border-left: 5px solid var(--accent);
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 10px 10px 0;
        }
        .highlight p {
            margin-bottom: 0;
        }
        .feature-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .feature-item {
            background: #edf2f7;
            padding: 1rem;
            border-radius: 8px;
            transition: var(--transition);
        }
        .feature-item:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        .feature-item i {
            color: var(--secondary);
            margin-right: 10px;
        }
        .image-container {
            text-align: center;
            margin: 2rem 0;
        }
        .image-container img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .image-container img:hover {
            transform: scale(1.02);
        }
        .download-box {
            background: linear-gradient(to right, var(--primary), #4c51bf);
            color: white;
            padding: 2rem;
            border-radius: 10px;
            text-align: center;
            margin: 2rem 0;
        }
        .download-btn {
            display: inline-block;
            background: var(--accent);
            color: var(--dark);
            padding: 1rem 2.5rem;
            border-radius: 50px;
            font-weight: bold;
            font-size: 1.2rem;
            margin-top: 1rem;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(246, 173, 85, 0.4);
        }
        .download-btn:hover {
            background: #ed8936;
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(246, 173, 85, 0.6);
        }
        aside {
            background: white;
            border-radius: 10px;
            padding: 1.5rem;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .rating-widget, .comment-form {
            margin-bottom: 2rem;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 1rem 0;
        }
        .stars i {
            font-size: 1.8rem;
            color: #e2e8f0;
            cursor: pointer;
            transition: var(--transition);
        }
        .stars i:hover, .stars i.active {
            color: #f6ad55;
        }
        .rating-btn, .comment-btn {
            width: 100%;
            padding: 0.8rem;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            transition: var(--transition);
            font-weight: 600;
        }
        .rating-btn:hover, .comment-btn:hover {
            background: #2d3748;
        }
        .comment-form textarea {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #cbd5e0;
            border-radius: 5px;
            resize: vertical;
            min-height: 120px;
            margin-bottom: 1rem;
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1rem;
            margin: 3rem 0 2rem;
        }
        .web-link {
            background: #edf2f7;
            padding: 1rem;
            border-radius: 5px;
            text-align: center;
            transition: var(--transition);
        }
        .web-link:hover {
            background: #e2e8f0;
            transform: translateX(5px);
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 2rem;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h4 {
            color: var(--accent);
            margin-bottom: 1.5rem;
            font-size: 1.2rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #4a5568;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .search-box {
                order: 3;
                width: 100%;
                margin-top: 1rem;
            }
            .hamburger {
                display: block;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--primary);
                padding: 1rem;
                border-radius: 10px;
                margin-top: 1rem;
            }
            nav ul.show {
                display: flex;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
        }