:root {
            --primary: #6a11cb;
            --secondary: #2575fc;
            --accent: #ff4e50;
            --dark: #1a1a2e;
            --light: #f8f9fa;
            --gray: #6c757d;
            --success: #28a745;
            --border-radius: 12px;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(90deg, var(--dark) 0%, #16213e 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(45deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            font-size: 2.5rem;
            background: none;
            -webkit-text-fill-color: var(--accent);
        }
        .my-logo:hover {
            transform: scale(1.03);
            transition: var(--transition);
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            gap: 2rem;
            list-style: none;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a:hover,
        .nav-links a.active {
            background: rgba(255, 255, 255, 0.15);
            color: var(--accent);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            padding: 5px;
        }
        .breadcrumb {
            padding: 1rem 0;
            background: white;
            border-bottom: 1px solid #eee;
            margin-bottom: 2rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 0.5rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 350px;
            gap: 3rem;
            margin: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            border-radius: var(--border-radius);
            padding: 3rem;
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 3.2rem;
            background: linear-gradient(45deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        h2 {
            font-size: 2.2rem;
            color: var(--dark);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--primary);
        }
        h3 {
            font-size: 1.8rem;
            color: var(--secondary);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: var(--dark);
            margin: 1.5rem 0 0.8rem;
        }
        .meta-info {
            display: flex;
            gap: 1.5rem;
            color: var(--gray);
            margin-bottom: 2rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px dashed #ddd;
            flex-wrap: wrap;
        }
        .meta-info span {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .last-updated {
            background: linear-gradient(45deg, #ffd89b, #19547b);
            color: white;
            padding: 8px 15px;
            border-radius: 20px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 1.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .highlight {
            background: linear-gradient(120deg, #a1c4fd30 0%, #c2e9fb30 100%);
            border-left: 4px solid var(--secondary);
            padding: 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            margin: 2rem 0;
        }
        .code-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        .code-card {
            background: linear-gradient(135deg, #667eea0d 0%, #764ba20d 100%);
            border: 2px dashed var(--primary);
            border-radius: var(--border-radius);
            padding: 1.8rem;
            text-align: center;
            transition: var(--transition);
            cursor: pointer;
        }
        .code-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 35px rgba(102, 126, 234, 0.15);
            border-style: solid;
        }
        .code-value {
            font-family: 'Courier New', monospace;
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            margin: 1rem 0;
            letter-spacing: 1.5px;
            background: white;
            padding: 10px;
            border-radius: 8px;
            border: 2px solid #e0e0e0;
        }
        .reward {
            color: var(--success);
            font-weight: 600;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        img:hover {
            transform: scale(1.01);
        }
        .content-image {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            border-radius: var(--border-radius);
            padding: 2rem;
            box-shadow: var(--shadow);
        }
        .widget-title {
            font-size: 1.5rem;
            color: var(--dark);
            margin-bottom: 1.5rem;
            padding-bottom: 0.8rem;
            border-bottom: 2px solid var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 1rem 1.2rem;
            border: 2px solid #ddd;
            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: linear-gradient(45deg, var(--primary), var(--secondary));
            color: white;
            border: none;
            padding: 0 1.8rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .search-form button:hover {
            opacity: 0.9;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 1.5rem 0;
            font-size: 2.2rem;
            color: #ffd700;
        }
        .stars i {
            cursor: pointer;
            transition: var(--transition);
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        .rating-form button {
            background: var(--accent);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            width: 100%;
            transition: var(--transition);
        }
        .rating-form button:hover {
            background: #ff3333;
            transform: translateY(-3px);
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 1rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #f0f0f0;
        }
        .related-links a {
            color: var(--dark);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 12px;
            transition: var(--transition);
            padding: 8px;
            border-radius: 8px;
        }
        .related-links a:hover {
            background: #f8f9ff;
            color: var(--primary);
            padding-left: 15px;
        }
        .related-links i {
            color: var(--secondary);
            font-size: 1.2rem;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(45deg, var(--primary), var(--secondary));
            color: white;
            padding: 1rem 2rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            margin: 1rem 0;
        }
        .btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(106, 17, 203, 0.3);
        }
        .btn-secondary {
            background: linear-gradient(45deg, #ff7e5f, #feb47b);
        }
        .accordion {
            margin: 2rem 0;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
        }
        .accordion-header {
            background: linear-gradient(90deg, #f8f9ff 0%, #eef1ff 100%);
            padding: 1.5rem;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid #e0e0ff;
            transition: var(--transition);
        }
        .accordion-header:hover {
            background: #e6ebff;
        }
        .accordion-content {
            padding: 0;
            max-height: 0;
            overflow: hidden;
            transition: all 0.4s ease;
            background: white;
        }
        .accordion-content.active {
            padding: 1.5rem;
            max-height: 1000px;
        }
        .comments-section {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 3px solid var(--primary);
        }
        .comment-form {
            background: #f8f9ff;
            padding: 2rem;
            border-radius: var(--border-radius);
            margin-bottom: 2rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark);
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(106, 17, 203, 0.1);
        }
        textarea {
            min-height: 150px;
            resize: vertical;
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 2rem;
        }
        .footer-logo {
            font-size: 2.5rem;
            font-weight: 800;
            background: linear-gradient(45deg, #a1c4fd, #c2e9fb);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 1rem;
        }
        friend-link {
            display: block;
            margin: 1rem 0;
        }
        friend-link a {
            color: #a1c4fd;
            text-decoration: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        friend-link a:hover {
            color: white;
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.95rem;
        }
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 70px;
                right: -100%;
                flex-direction: column;
                background: var(--dark);
                width: 80%;
                height: calc(100vh - 70px);
                padding: 2rem;
                transition: 0.5s;
                box-shadow: -5px 0 15px rgba(0, 0, 0, 0.2);
                z-index: 999;
            }
            .nav-links.active {
                right: 0;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.5rem;
            }
            h2 {
                font-size: 1.9rem;
            }
            h3 {
                font-size: 1.6rem;
            }
            article {
                padding: 2rem;
            }
            .code-grid {
                grid-template-columns: 1fr;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in {
            animation: fadeIn 0.8s ease forwards;
        }
        .text-center { text-align: center; }
        .mb-3 { margin-bottom: 3rem; }
        .mt-3 { margin-top: 3rem; }
        .py-2 { padding-top: 2rem; padding-bottom: 2rem; }
        .highlight-text {
            background: linear-gradient(45deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            font-weight: 800;
        }
        .badge {
            display: inline-block;
            padding: 5px 15px;
            background: var(--accent);
            color: white;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-right: 10px;
            margin-bottom: 10px;
        }