* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Nirmala UI', 'Arial', sans-serif;
        }
        :root {
            --primary: #7c3aed;
            --secondary: #f59e0b;
            --accent: #10b981;
            --dark: #1f2937;
            --light: #f9fafb;
            --gray: #6b7280;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f3f4f6;
            color: #1f2937;
            line-height: 1.7;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary), #5b21b6);
            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: 1rem 0;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 1px;
        }
        .logo span {
            color: var(--secondary);
        }
        .search-form {
            display: flex;
            flex: 0 1 400px;
        }
        .search-form input {
            flex-grow: 1;
            padding: 12px 18px;
            border: none;
            border-radius: 30px 0 0 30px;
            font-size: 1rem;
            outline: none;
        }
        .search-form button {
            background-color: var(--secondary);
            color: white;
            border: none;
            border-radius: 0 30px 30px 0;
            padding: 0 25px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #d97706;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        nav {
            background-color: rgba(255, 255, 255, 0.1);
            padding: 0.8rem 0;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 2rem;
            justify-content: center;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 0.5rem 0;
            position: relative;
            transition: var(--transition);
        }
        .nav-links a:hover {
            color: var(--secondary);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--secondary);
            transition: width 0.3s;
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: #d1d5db;
        }
        .breadcrumb a {
            color: white;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            background-color: white;
            border-radius: 12px;
            box-shadow: var(--shadow);
            margin: 2rem auto;
            overflow: hidden;
        }
        .article-header {
            padding: 3rem 2rem;
            background: linear-gradient(to right, var(--primary), #8b5cf6);
            color: white;
            text-align: center;
        }
        .article-header h1 {
            font-size: 2.8rem;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .meta {
            display: flex;
            justify-content: center;
            gap: 2rem;
            font-size: 0.95rem;
            opacity: 0.9;
            margin-top: 1.5rem;
        }
        .content {
            padding: 3rem 2rem;
        }
        .content p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }
        .content h2 {
            color: var(--primary);
            font-size: 2rem;
            margin: 3rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--secondary);
        }
        .content h3 {
            color: var(--dark);
            font-size: 1.6rem;
            margin: 2.5rem 0 1rem;
        }
        .highlight-box {
            background-color: #f0f9ff;
            border-left: 5px solid var(--accent);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .code-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        .code-item {
            background: linear-gradient(to bottom right, #fef3c7, #fde68a);
            border: 2px dashed var(--secondary);
            padding: 1.5rem;
            text-align: center;
            border-radius: 12px;
            transition: var(--transition);
        }
        .code-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(245, 158, 11, 0.2);
        }
        .code-value {
            font-family: 'Courier New', monospace;
            font-size: 1.8rem;
            font-weight: bold;
            color: #92400e;
            margin: 1rem 0;
            letter-spacing: 1px;
        }
        .reward {
            color: var(--accent);
            font-weight: bold;
            font-size: 1.1rem;
        }
        .image-container {
            margin: 3rem 0;
            text-align: center;
        }
        .image-container img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            box-shadow: var(--shadow);
            border: 5px solid white;
        }
        .interactive-section {
            background-color: var(--light);
            border-radius: 12px;
            padding: 2rem;
            margin: 3rem 0;
            border: 1px solid #e5e7eb;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark);
        }
        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #d1d5db;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
        }
        .rating {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
            direction: ltr;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 2rem;
            color: #d1d5db;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating label:hover,
        .rating label:hover ~ label {
            color: var(--secondary);
        }
        .rating input:checked ~ label {
            color: var(--secondary);
        }
        .btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 14px 30px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-block;
            text-decoration: none;
            text-align: center;
        }
        .btn:hover {
            background-color: #5b21b6;
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(124, 58, 237, 0.3);
        }
        .btn-secondary {
            background-color: var(--secondary);
        }
        .btn-secondary:hover {
            background-color: #d97706;
        }
        .footer-links {
            background-color: var(--dark);
            padding: 3rem 0 2rem;
        }
        .web-link {
            display: inline-block;
            background-color: #374151;
            margin: 0.7rem;
            padding: 1rem 1.5rem;
            border-radius: 8px;
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: var(--primary);
            transform: scale(1.05);
        }
        .web-link a {
            color: white;
            text-decoration: none;
            font-weight: 500;
        }
        .footer-links-container {
            text-align: center;
        }
        footer {
            background-color: #111827;
            color: #9ca3af;
            padding: 3rem 0;
            text-align: center;
        }
        .footer-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1.5rem;
        }
        .copyright {
            font-size: 0.95rem;
            margin-top: 1rem;
        }
        @media (max-width: 992px) {
            .header-top {
                flex-wrap: wrap;
            }
            .search-form {
                order: 3;
                flex: 1 0 100%;
                margin-top: 1rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-links {
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: var(--primary);
                padding: 1rem;
                display: none;
                box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            }
            .nav-links.active {
                display: flex;
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
            .content {
                padding: 2rem 1rem;
            }
            .code-list {
                grid-template-columns: 1fr;
            }
        }
        .text-center {
            text-align: center;
        }
        .mt-3 {
            margin-top: 3rem;
        }
        .mb-3 {
            margin-bottom: 3rem;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .bold {
            font-weight: 800;
            color: var(--primary);
        }