* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary-color: #1a237e;
            --secondary-color: #ff9800;
            --accent-color: #4caf50;
            --dark-bg: #0d1520;
            --light-bg: #f5f7fa;
            --text-dark: #333;
            --text-light: #f1f1f1;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--light-bg);
            color: var(--text-dark);
            line-height: 1.7;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        ul, ol {
            list-style-position: inside;
            margin-left: 1.5rem;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, var(--secondary-color), #ff5722);
            color: white;
            padding: 12px 28px;
            border-radius: 30px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            box-shadow: var(--shadow);
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(255, 152, 0, 0.3);
        }
        section {
            padding: 60px 0;
        }
        h1, h2, h3, h4 {
            color: var(--primary-color);
            margin-bottom: 1.2rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            margin-top: 0.5rem;
        }
        h2 {
            font-size: 2.2rem;
            border-left: 5px solid var(--secondary-color);
            padding-left: 15px;
            margin-top: 2.5rem;
        }
        h3 {
            font-size: 1.8rem;
            color: #2c3e50;
            margin-top: 2rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }
        strong {
            color: var(--primary-color);
            font-weight: 700;
        }
        em {
            color: var(--accent-color);
            font-style: italic;
        }
        .highlight {
            background-color: #fff9c4;
            padding: 2px 5px;
            border-radius: 3px;
        }
        header {
            background-color: var(--dark-bg);
            color: var(--text-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.5);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--secondary-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            font-size: 2rem;
        }
        .logo span {
            background: linear-gradient(45deg, #ff9800, #ffeb3b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .desktop-nav ul {
            display: flex;
            gap: 30px;
        }
        .desktop-nav li {
            list-style: none;
        }
        .desktop-nav a {
            font-weight: 600;
            padding: 8px 0;
            position: relative;
        }
        .desktop-nav a:hover {
            color: var(--secondary-color);
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--secondary-color);
            transition: width 0.3s;
        }
        .desktop-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            padding: 5px;
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background-color: var(--dark-bg);
            flex-direction: column;
            padding: 20px;
            box-shadow: 0 10px 15px rgba(0,0,0,0.2);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav ul {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .mobile-nav li {
            list-style: none;
            border-bottom: 1px solid #2a3a4d;
            padding-bottom: 15px;
        }
        .mobile-nav a {
            font-size: 1.2rem;
            display: block;
            padding: 10px;
        }
        .breadcrumb {
            background-color: #e8eaf6;
            padding: 12px 20px;
            font-size: 0.95rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin: 0 10px;
            color: #777;
        }
        .breadcrumb a:hover {
            color: var(--secondary-color);
            text-decoration: underline;
        }
        .hero {
            background: linear-gradient(rgba(26, 35, 126, 0.85), rgba(13, 21, 32, 0.9)), url('https://images.unsplash.com/photo-1533105079780-92b9be482077?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            color: white;
            text-align: center;
            padding: 100px 20px;
            margin-bottom: 40px;
        }
        .hero h1 {
            color: white;
            font-size: 3.2rem;
            margin-bottom: 20px;
            text-shadow: 2px 2px 5px rgba(0,0,0,0.7);
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 30px;
            color: #e0e0e0;
        }
        .hero-cta {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .hero-cta .btn {
            font-size: 1.1rem;
            padding: 15px 35px;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            align-items: start;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        article {
            background-color: white;
            border-radius: 12px;
            padding: 40px;
            box-shadow: var(--shadow);
        }
        .sidebar {
            position: sticky;
            top: 150px;
        }
        .sidebar-widget {
            background-color: white;
            border-radius: 12px;
            padding: 25px;
            margin-bottom: 30px;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            font-size: 1.5rem;
            margin-top: 0;
            border-bottom: 2px solid #eee;
            padding-bottom: 10px;
        }
        .search-form {
            display: flex;
            margin-top: 15px;
        }
        .search-form input {
            flex-grow: 1;
            padding: 12px 15px;
            border: 2px solid #ddd;
            border-radius: 30px 0 0 30px;
            font-size: 1rem;
            outline: none;
        }
        .search-form input:focus {
            border-color: var(--secondary-color);
        }
        .search-form button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            border-radius: 0 30px 30px 0;
            padding: 0 20px;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: var(--secondary-color);
        }
        .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-top: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 5px;
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 12px;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary-color);
            outline: none;
            box-shadow: 0 0 0 2px rgba(26, 35, 126, 0.2);
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            color: #ffd700;
            margin: 10px 0;
        }
        .rating-stars i {
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: #ff9800;
            transform: scale(1.2);
        }
        .content-block {
            margin-bottom: 40px;
            padding-bottom: 30px;
            border-bottom: 1px dashed #e0e0e0;
        }
        .tip-box {
            background-color: #e8f5e9;
            border-left: 5px solid var(--accent-color);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .tip-box i {
            color: var(--accent-color);
            margin-right: 10px;
        }
        .code-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
            margin: 25px 0;
        }
        .code-item {
            background: linear-gradient(135deg, #f9f9f9, #e3f2fd);
            padding: 20px;
            border-radius: 10px;
            text-align: center;
            border: 2px dashed #bbdefb;
            transition: var(--transition);
        }
        .code-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
            border-color: var(--secondary-color);
        }
        .code-value {
            font-family: monospace;
            font-size: 1.5rem;
            font-weight: bold;
            color: var(--primary-color);
            background-color: white;
            padding: 10px;
            border-radius: 6px;
            margin: 10px 0;
            letter-spacing: 1px;
        }
        .image-container {
            margin: 30px 0;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .image-container figcaption {
            text-align: center;
            font-style: italic;
            padding: 10px;
            background-color: #f9f9f9;
            color: #666;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 30px 0;
            box-shadow: var(--shadow);
            border-radius: 10px;
            overflow: hidden;
        }
        .comparison-table th,
        .comparison-table td {
            padding: 15px;
            text-align: left;
            border-bottom: 1px solid #ddd;
        }
        .comparison-table th {
            background-color: var(--primary-color);
            color: white;
            font-weight: 600;
        }
        .comparison-table tr:nth-child(even) {
            background-color: #f9f9f9;
        }
        .comparison-table tr:hover {
            background-color: #e3f2fd;
        }
        .footer-links {
            background-color: #2c3e50;
            padding: 40px 20px;
        }
        .footer-links .container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 25px;
        }
        .web-link {
            background-color: #34495e;
            padding: 15px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: #3e5771;
            transform: translateX(5px);
        }
        .web-link a {
            color: #bdc3c7;
            display: block;
        }
        .web-link a:hover {
            color: white;
        }
        footer {
            background-color: var(--dark-bg);
            color: var(--text-light);
            text-align: center;
            padding: 30px 20px;
        }
        .copyright {
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #2a3a4d;
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .hero { padding: 70px 20px; }
            .hero h1 { font-size: 2.5rem; }
            .header-container { padding: 12px 15px; }
            .desktop-nav { display: none; }
            .hamburger { display: block; }
            .breadcrumb { padding: 10px 15px; }
            article { padding: 25px; }
            .code-list { grid-template-columns: 1fr; }
        }