:root {
            --primary-purple: #8a2be2;
            --secondary-pink: #ff00ff;
            --dark-bg: #1a1a2e;
            --content-bg: #16213e;
            --text-light: #f0f8ff;
            --text-grey: #b0b0d0;
            --accent-cyan: #00ffff;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --border-radius: 12px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-light);
            background-color: var(--dark-bg);
            background-image: radial-gradient(circle at 20% 30%, rgba(138, 43, 226, 0.15) 0%, transparent 20%), radial-gradient(circle at 80% 70%, rgba(255, 0, 255, 0.1) 0%, transparent 20%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary-pink);
            text-shadow: 0 0 8px var(--secondary-pink);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }
        header {
            background-color: rgba(22, 33, 62, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid var(--primary-purple);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: var(--spacing-sm) 0;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 1.8rem;
            background: linear-gradient(90deg, var(--primary-purple), var(--secondary-pink));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .desktop-nav {
            display: flex;
            gap: var(--spacing-md);
        }
        .desktop-nav a {
            font-weight: 600;
            padding: var(--spacing-xs) var(--spacing-sm);
            border-radius: var(--border-radius);
        }
        .desktop-nav a:hover {
            background-color: rgba(138, 43, 226, 0.2);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--accent-cyan);
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: var(--content-bg);
            padding: var(--spacing-sm);
            border-radius: var(--border-radius);
            margin-top: var(--spacing-sm);
            border: 1px solid var(--primary-purple);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            padding: var(--spacing-sm);
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            padding: var(--spacing-sm) 0;
            font-size: 0.9rem;
            color: var(--text-grey);
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .breadcrumb a {
            color: var(--text-grey);
        }
        .breadcrumb a:hover {
            color: var(--accent-cyan);
        }
        .breadcrumb i {
            margin: 0 var(--spacing-xs);
        }
        main {
            flex: 1;
            padding: var(--spacing-lg) 0;
        }
        .article-header {
            text-align: center;
            margin-bottom: var(--spacing-lg);
            padding-bottom: var(--spacing-md);
            border-bottom: 3px solid var(--primary-purple);
        }
        h1 {
            font-size: 3rem;
            margin-bottom: var(--spacing-sm);
            background: linear-gradient(90deg, var(--accent-cyan), var(--secondary-pink));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: var(--spacing-md);
            color: var(--text-grey);
            font-size: 0.9rem;
            margin-top: var(--spacing-sm);
        }
        .content-section {
            background-color: var(--content-bg);
            border-radius: var(--border-radius);
            padding: var(--spacing-md);
            margin-bottom: var(--spacing-md);
            border: 1px solid rgba(138, 43, 226, 0.3);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }
        h2 {
            font-size: 2.2rem;
            color: var(--accent-cyan);
            margin: var(--spacing-md) 0 var(--spacing-sm);
            padding-bottom: var(--spacing-xs);
            border-bottom: 2px dashed var(--primary-purple);
        }
        h3 {
            font-size: 1.8rem;
            color: var(--secondary-pink);
            margin: var(--spacing-md) 0 var(--spacing-sm);
        }
        h4 {
            font-size: 1.4rem;
            color: var(--primary-purple);
            margin: var(--spacing-sm) 0;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .highlight {
            background: linear-gradient(90deg, rgba(138,43,226,0.2), rgba(255,0,255,0.2));
            border-left: 4px solid var(--accent-cyan);
            padding: var(--spacing-sm);
            margin: var(--spacing-md) 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .key-term {
            font-weight: bold;
            color: var(--accent-cyan);
        }
        .featured-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--border-radius);
            border: 3px solid var(--primary-purple);
            margin: var(--spacing-md) auto;
            display: block;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
            transition: var(--transition);
        }
        .featured-image:hover {
            transform: scale(1.01);
            box-shadow: 0 20px 40px rgba(138, 43, 226, 0.4);
        }
        .caption {
            text-align: center;
            font-style: italic;
            color: var(--text-grey);
            margin-top: var(--spacing-xs);
            font-size: 0.9rem;
        }
        .interactive-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: var(--spacing-md);
            margin: var(--spacing-lg) 0;
        }
        .interactive-box form {
            background: rgba(22, 33, 62, 0.8);
            padding: var(--spacing-md);
            border-radius: var(--border-radius);
            border: 1px solid var(--primary-purple);
        }
        .form-title {
            font-size: 1.5rem;
            margin-bottom: var(--spacing-sm);
            color: var(--accent-cyan);
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
        }
        .form-group {
            margin-bottom: var(--spacing-sm);
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            color: var(--text-grey);
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            border-radius: calc(var(--border-radius) / 2);
            border: 1px solid rgba(138, 43, 226, 0.5);
            background-color: rgba(26, 26, 46, 0.7);
            color: var(--text-light);
            font-family: inherit;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--accent-cyan);
            box-shadow: 0 0 10px rgba(0, 255, 255, 0.3);
        }
        button {
            background: linear-gradient(90deg, var(--primary-purple), var(--secondary-pink));
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: calc(var(--border-radius) / 2);
            cursor: pointer;
            font-weight: bold;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-xs);
        }
        button:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(138, 43, 226, 0.4);
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.5rem;
            color: gold;
            margin: var(--spacing-sm) 0;
        }
        .star {
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover, .star.active {
            color: orange;
            transform: scale(1.2);
        }
        footer {
            background-color: var(--content-bg);
            border-top: 2px solid var(--primary-purple);
            padding: var(--spacing-lg) 0 var(--spacing-md);
            margin-top: var(--spacing-lg);
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        friend-link {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: var(--spacing-md);
            margin: var(--spacing-md) 0;
        }
        friend-link a {
            background-color: rgba(138, 43, 226, 0.1);
            padding: var(--spacing-xs) var(--spacing-sm);
            border-radius: var(--border-radius);
            border: 1px solid transparent;
        }
        friend-link a:hover {
            background-color: rgba(138, 43, 226, 0.3);
            border-color: var(--primary-purple);
        }
        .copyright {
            text-align: center;
            color: var(--text-grey);
            font-size: 0.9rem;
            margin-top: var(--spacing-md);
            padding-top: var(--spacing-md);
            border-top: 1px solid rgba(255,255,255,0.1);
            width: 100%;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
            .interactive-box { grid-template-columns: 1fr; }
        }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .hamburger { display: block; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .article-meta { flex-direction: column; align-items: center; gap: var(--spacing-xs); }
        }
        @media (max-width: 576px) {
            .container { padding: 0 var(--spacing-xs); }
            .content-section { padding: var(--spacing-sm); }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.6rem; }
            h3 { font-size: 1.3rem; }
        }