* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #2a5caa;
            --primary-dark: #1e3f7a;
            --secondary: #f8c300;
            --secondary-dark: #d4a900;
            --accent: #e63946;
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
            --border-radius: 12px;
            --shadow: 0 5px 15px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f5f7fb;
            color: var(--dark);
            line-height: 1.6;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: var(--primary);
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
            padding: 12px 28px;
            border-radius: var(--border-radius);
            border: none;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            transform: translateY(-3px);
            box-shadow: var(--shadow);
            color: white;
        }
        .btn-secondary {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
        }
        .btn-secondary:hover {
            background: linear-gradient(135deg, var(--secondary-dark), var(--secondary));
        }
        section {
            padding: 60px 0;
        }
        .section-title {
            font-size: 2.5rem;
            color: var(--primary-dark);
            margin-bottom: 2rem;
            position: relative;
            padding-bottom: 15px;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background: var(--secondary);
            border-radius: 2px;
        }
        .text-center {
            text-align: center;
        }
        .text-center .section-title::after {
            left: 50%;
            transform: translateX(-50%);
        }
        header {
            background-color: white;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
        }
        .my-logo i {
            color: var(--secondary);
            margin-right: 10px;
            font-size: 2.5rem;
        }
        .my-logo span {
            color: var(--accent);
        }
        .desktop-nav {
            display: flex;
            gap: 30px;
        }
        .desktop-nav a {
            font-weight: 600;
            color: var(--dark);
            position: relative;
        }
        .desktop-nav a:hover {
            color: var(--primary);
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--secondary);
            transition: var(--transition);
        }
        .desktop-nav a:hover::after {
            width: 100%;
        }
        .mobile-menu-btn {
            display: none;
            font-size: 1.8rem;
            color: var(--dark);
            background: none;
            border: none;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: white;
            padding: 20px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            border-radius: 0 0 var(--border-radius) var(--border-radius);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            padding: 12px 0;
            border-bottom: 1px solid #eee;
            font-weight: 600;
            color: var(--dark);
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .search-form {
            display: flex;
            max-width: 400px;
            width: 100%;
        }
        .search-form input {
            flex: 1;
            padding: 12px 20px;
            border: 2px solid #e0e0e0;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: var(--primary-dark);
        }
        .breadcrumb {
            background-color: #f0f4ff;
            padding: 15px 0;
            margin-bottom: 30px;
        }
        .breadcrumb ul {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li {
            margin-right: 10px;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin-left: 10px;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .hero {
            background: linear-gradient(rgba(42, 92, 170, 0.9), rgba(30, 63, 122, 0.9)), url('https://images.unsplash.com/photo-1635070041078-e363dbe005cb?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 100px 0;
            border-radius: var(--border-radius);
            margin: 30px 0;
            text-align: center;
        }
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 30px;
            opacity: 0.9;
        }
        .content-area {
            display: grid;
            grid-template-columns: 1fr 350px;
            gap: 40px;
            margin: 40px 0;
        }
        .main-content {
            background: white;
            padding: 40px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar {
            background: white;
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            color: var(--gray);
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 1px solid #eee;
        }
        .article-meta span i {
            margin-right: 5px;
            color: var(--secondary);
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-dark);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 10px;
            border-bottom: 2px solid #f0f4ff;
        }
        h3 {
            font-size: 1.6rem;
            color: var(--primary);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--dark);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            line-height: 1.8;
        }
        .highlight {
            background-color: #fff9e6;
            border-left: 4px solid var(--secondary);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .code-list {
            background: #f8f9fa;
            border-radius: var(--border-radius);
            padding: 30px;
            margin: 30px 0;
        }
        .code-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px;
            background: white;
            margin-bottom: 15px;
            border-radius: 8px;
            box-shadow: 0 3px 8px rgba(0,0,0,0.04);
            border-left: 4px solid var(--primary);
        }
        .code-item:last-child {
            margin-bottom: 0;
        }
        .code-text {
            font-family: monospace;
            font-size: 1.3rem;
            font-weight: bold;
            color: var(--primary-dark);
        }
        .copy-btn {
            background: #e9f2ff;
            color: var(--primary);
            border: none;
            padding: 8px 16px;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .copy-btn:hover {
            background: var(--primary);
            color: white;
        }
        .featured-image {
            width: 100%;
            border-radius: var(--border-radius);
            margin: 30px 0;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }
        .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 30px 0;
        }
        .tag {
            background: #eef5ff;
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            color: var(--primary);
            font-weight: 600;
        }
        .tag:hover {
            background: var(--primary);
            color: white;
        }
        .sidebar-widget {
            margin-bottom: 40px;
        }
        .sidebar-widget:last-child {
            margin-bottom: 0;
        }
        .widget-title {
            font-size: 1.3rem;
            color: var(--primary-dark);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #f0f4ff;
        }
        .related-links a {
            display: block;
            padding: 12px 15px;
            margin-bottom: 10px;
            background: #f8f9fa;
            border-radius: 8px;
            color: var(--dark);
            transition: var(--transition);
        }
        .related-links a:hover {
            background: var(--primary);
            color: white;
            transform: translateX(5px);
        }
        .social-share {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .social-share a {
            flex: 1;
            min-width: 60px;
            padding: 12px;
            border-radius: 8px;
            color: white;
            text-align: center;
            font-weight: 600;
        }
        .social-share .facebook { background: #3b5998; }
        .social-share .twitter { background: #1da1f2; }
        .social-share .pinterest { background: #e60023; }
        .social-share .whatsapp { background: #25d366; }
        .social-share a:hover {
            opacity: 0.9;
            transform: translateY(-3px);
        }
        .comments-section, .rating-section {
            background: white;
            padding: 40px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin: 40px 0;
        }
        .rating-stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 20px 0;
            font-size: 2.5rem;
            color: #ffd700;
        }
        .rating-form, .comment-form {
            max-width: 800px;
            margin: 30px auto 0;
        }
        .form-group {
            margin-bottom: 25px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark);
        }
        .form-control {
            width: 100%;
            padding: 15px;
            border: 2px solid #e0e0e0;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(42, 92, 170, 0.2);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .stars-select {
            display: flex;
            gap: 10px;
            justify-content: center;
            margin: 15px 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffd700;
        }
        .comment {
            padding: 25px;
            background: #f8f9fa;
            border-radius: var(--border-radius);
            margin-bottom: 25px;
            border-left: 4px solid var(--primary);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 15px;
            color: var(--gray);
        }
        .comment-author {
            font-weight: bold;
            color: var(--dark);
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 60px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 20px;
            color: white;
        }
        .footer-logo span {
            color: var(--secondary);
        }
        .footer-description {
            color: #bbb;
            margin-bottom: 25px;
        }
        .footer-links h4 {
            color: white;
            margin-bottom: 25px;
            font-size: 1.3rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #bbb;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            padding: 10px 20px;
            border-radius: 6px;
            margin: 5px;
            color: #bbb;
            font-size: 0.9rem;
        }
        friend-link:hover {
            background: rgba(255,255,255,0.2);
            color: white;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #bbb;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .content-area {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .hero h1 {
                font-size: 2.8rem;
            }
            .section-title {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .desktop-nav, .search-form.desktop {
                display: none;
            }
            .mobile-menu-btn {
                display: block;
            }
            .header-top {
                padding: 15px 0;
            }
            .hero {
                padding: 70px 20px;
            }
            .hero h1 {
                font-size: 2.3rem;
            }
            .hero p {
                font-size: 1.1rem;
            }
            .main-content, .comments-section, .rating-section {
                padding: 30px 20px;
            }
            .article-meta {
                flex-direction: column;
                gap: 10px;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .code-item {
                flex-direction: column;
                gap: 15px;
                align-items: flex-start;
            }
            .copy-btn {
                align-self: flex-end;
            }
        }
        @media (max-width: 576px) {
            .section-title {
                font-size: 1.8rem;
            }
            .btn {
                padding: 10px 20px;
                width: 100%;
            }
            .social-share a {
                min-width: 45px;
                padding: 10px 5px;
                font-size: 0.8rem;
            }
        }