:root {
            --primary: #1a237e;
            --primary-dark: #0d1440;
            --accent: #ff9800;
            --accent-dark: #e68900;
            --light: #f5f5f5;
            --dark: #212121;
            --gray: #757575;
            --success: #4caf50;
            --warning: #ffc107;
            --danger: #f44336;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background-color: #f9f9f9;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background-color: var(--accent);
            color: white;
            border-radius: var(--radius);
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            background-color: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }
        .btn-primary {
            background-color: var(--primary);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
        }
        header {
            background-color: var(--primary-dark);
            color: white;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--accent);
        }
        .logo span {
            color: var(--accent);
        }
        .search-box {
            display: flex;
            flex: 0 1 400px;
        }
        .search-box input {
            flex: 1;
            padding: 12px 15px;
            border: none;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
        }
        .search-box button {
            background-color: var(--accent);
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
        }
        .search-box button:hover {
            background-color: var(--accent-dark);
        }
        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
        }
        nav ul {
            display: flex;
            gap: 25px;
        }
        nav a {
            font-weight: 500;
            padding: 5px 0;
            position: relative;
        }
        nav a:hover {
            color: var(--accent);
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent);
            transition: var(--transition);
        }
        nav a:hover::after {
            width: 100%;
        }
        .breadcrumb {
            background-color: rgba(255, 255, 255, 0.05);
            padding: 12px 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 8px;
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        .hero {
            background: linear-gradient(rgba(26, 35, 126, 0.9), rgba(13, 20, 64, 0.9)), url('https://images.unsplash.com/photo-1552820728-8b83bb6b773f?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            text-align: center;
            padding: 80px 20px;
            margin-bottom: 40px;
            border-radius: 0 0 var(--radius) var(--radius);
        }
        .hero h1 {
            font-size: 2.8rem;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 30px;
            opacity: 0.9;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 40px 0;
        }
        .content-card {
            background-color: white;
            border-radius: var(--radius);
            padding: 30px;
            margin-bottom: 30px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .content-card:hover {
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
        }
        h1, h2, h3, h4 {
            color: var(--primary-dark);
            margin-bottom: 15px;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.5rem;
        }
        h2 {
            font-size: 2rem;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--light);
            margin-top: 30px;
        }
        h3 {
            font-size: 1.5rem;
            margin-top: 25px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .highlight {
            background-color: #fff8e1;
            border-left: 4px solid var(--accent);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .feature-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
            margin: 25px 0;
        }
        .feature-item {
            background: var(--light);
            padding: 20px;
            border-radius: var(--radius);
            text-align: center;
            transition: var(--transition);
        }
        .feature-item:hover {
            transform: translateY(-5px);
            background-color: #e8eaf6;
        }
        .feature-item i {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 15px;
        }
        .image-container {
            margin: 30px 0;
            text-align: center;
        }
        .image-container img {
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin: 0 auto;
        }
        .image-caption {
            font-style: italic;
            color: var(--gray);
            margin-top: 10px;
            font-size: 0.9rem;
        }
        aside .widget {
            background-color: white;
            border-radius: var(--radius);
            padding: 25px;
            margin-bottom: 25px;
            box-shadow: var(--shadow);
        }
        .widget-title {
            font-size: 1.3rem;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--light);
        }
        .download-box {
            text-align: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
        }
        .download-box .btn {
            margin-top: 15px;
            width: 100%;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 1.8rem;
            color: var(--warning);
            margin: 15px 0;
        }
        .stars i {
            cursor: pointer;
            margin: 0 2px;
        }
        .comment-form, .score-form {
            margin-top: 30px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.2);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .comments-list {
            margin-top: 40px;
        }
        .comment {
            padding: 20px;
            border-bottom: 1px solid #eee;
            display: flex;
            gap: 15px;
        }
        .comment:last-child {
            border-bottom: none;
        }
        .comment-avatar {
            flex-shrink: 0;
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 1.2rem;
        }
        .comment-content h4 {
            margin-bottom: 5px;
            font-size: 1.1rem;
        }
        .comment-meta {
            font-size: 0.9rem;
            color: var(--gray);
            margin-bottom: 10px;
        }
        .footer-links {
            background-color: var(--primary-dark);
            color: white;
            padding: 40px 0;
            margin-top: 60px;
        }
        .footer-links .container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 30px;
        }
        .web-link {
            background-color: rgba(255, 255, 255, 0.05);
            padding: 15px;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateX(5px);
        }
        .web-link a {
            display: block;
            color: #ddd;
        }
        .web-link a:hover {
            color: var(--accent);
        }
        footer {
            background-color: var(--dark);
            color: #bbb;
            text-align: center;
            padding: 30px 0;
            font-size: 0.95rem;
        }
        .footer-links a {
            color: #ddd;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .copyright {
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .feature-list {
                grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .search-box {
                order: 3;
                flex: 1 1 100%;
                margin-top: 15px;
            }
            .mobile-toggle {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                order: 4;
                margin-top: 15px;
            }
            nav.active {
                display: block;
            }
            nav ul {
                flex-direction: column;
                gap: 0;
            }
            nav li {
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }
            nav a {
                display: block;
                padding: 12px 0;
            }
            .hero {
                padding: 60px 20px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .content-card {
                padding: 20px;
            }
        }