* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #1a73e8;
            --secondary: #fbbc04;
            --dark: #202124;
            --light: #f8f9fa;
            --gray: #5f6368;
            --success: #34a853;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        body {
            background-color: #f5f7fa;
            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-color: 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: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--secondary);
        }
        .search-box {
            display: flex;
            flex: 0 1 400px;
        }
        .search-box input {
            flex-grow: 1;
            padding: 12px 15px;
            border: 2px solid #ddd;
            border-radius: 30px 0 0 30px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-box input:focus {
            border-color: var(--primary);
        }
        .search-box button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 30px 30px 0;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s;
        }
        .search-box button:hover {
            background-color: #0d62d9;
        }
        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
        }
        nav {
            background-color: var(--dark);
            border-top: 3px solid var(--secondary);
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            position: relative;
        }
        .nav-links a {
            color: white;
            padding: 16px 20px;
            display: block;
            font-weight: 500;
            transition: background 0.3s;
        }
        .nav-links a:hover {
            background-color: rgba(255,255,255,0.1);
        }
        .nav-links a.active {
            background-color: var(--primary);
        }
        .breadcrumb {
            padding: 12px 0;
            background-color: #f1f3f4;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb span {
            margin: 0 5px;
        }
        main {
            padding: 30px 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 30px;
        }
        .article-content {
            background-color: white;
            border-radius: 10px;
            padding: 30px;
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--dark);
            font-size: 2.5rem;
            margin-bottom: 20px;
            line-height: 1.3;
        }
        h2 {
            color: var(--primary);
            font-size: 1.8rem;
            margin: 30px 0 15px;
            padding-bottom: 10px;
            border-bottom: 2px solid #eee;
        }
        h3 {
            color: var(--gray);
            font-size: 1.4rem;
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background-color: #e8f0fe;
            border-left: 4px solid var(--primary);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .feature-list {
            list-style: none;
            margin: 20px 0;
        }
        .feature-list li {
            padding: 10px 0 10px 30px;
            position: relative;
        }
        .feature-list li:before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--success);
            font-weight: bold;
        }
        .image-container {
            margin: 30px 0;
            text-align: center;
        }
        .image-container img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .caption {
            font-style: italic;
            color: var(--gray);
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .download-box {
            background: linear-gradient(135deg, var(--primary), #0d62d9);
            color: white;
            padding: 25px;
            border-radius: 10px;
            text-align: center;
            margin: 30px 0;
        }
        .download-box h3 {
            color: white;
            margin-top: 0;
        }
        .btn {
            display: inline-block;
            background-color: var(--secondary);
            color: var(--dark);
            padding: 14px 30px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            margin-top: 15px;
            transition: transform 0.3s, box-shadow 0.3s;
            border: none;
            cursor: pointer;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(0,0,0,0.2);
        }
        .warning {
            background-color: #fce8e6;
            border-left: 4px solid #d93025;
            padding: 15px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }
        .sidebar-box {
            background-color: white;
            border-radius: 10px;
            padding: 20px;
            box-shadow: var(--shadow);
        }
        .sidebar-box h3 {
            margin-top: 0;
            color: var(--primary);
            font-size: 1.3rem;
        }
        .rating {
            display: flex;
            align-items: center;
            gap: 10px;
            margin: 15px 0;
        }
        .stars {
            color: var(--secondary);
        }
        .rating-form input, .rating-form textarea, .comment-form input, .comment-form textarea {
            width: 100%;
            padding: 12px;
            margin-bottom: 12px;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-size: 1rem;
        }
        .rating-form button, .comment-form button {
            width: 100%;
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 12px;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
        }
        .rating-form button:hover, .comment-form button:hover {
            background-color: #0d62d9;
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            padding: 10px 0;
            border-bottom: 1px solid #eee;
        }
        .related-links li:last-child {
            border-bottom: none;
        }
        .related-links a {
            color: var(--dark);
            transition: color 0.3s;
            display: block;
        }
        .related-links a:hover {
            color: var(--primary);
            padding-left: 5px;
        }
        .footer-links {
            background-color: white;
            padding: 40px 0 20px;
            margin-top: 40px;
            border-top: 1px solid #eee;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }
        .web-link {
            background-color: #f8f9fa;
            padding: 15px;
            border-radius: 6px;
            text-align: center;
            transition: background 0.3s;
        }
        .web-link:hover {
            background-color: #e8f0fe;
        }
        .web-link a {
            color: var(--primary);
            font-weight: 500;
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 30px 0;
            text-align: center;
        }
        .footer-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }
        .copyright {
            font-size: 0.9rem;
            color: #bdc1c6;
        }
        .social-links {
            display: flex;
            gap: 15px;
        }
        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: rgba(255,255,255,0.1);
            border-radius: 50%;
            transition: background 0.3s;
        }
        .social-links a:hover {
            background-color: var(--primary);
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            .web-links-container {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .search-box {
                display: none;
            }
            .nav-links {
                flex-direction: column;
                display: none;
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links a {
                padding: 15px;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            h1 {
                font-size: 2rem;
            }
            .web-links-container {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-content {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 576px) {
            .web-links-container {
                grid-template-columns: 1fr;
            }
            .article-content, .sidebar-box {
                padding: 20px;
            }
        }