:root {
            --primary-green: #00ff87;
            --primary-blue: #00d4ff;
            --dark-bg: #0a0a0f;
            --card-bg: #12121f;
            --text-primary: #f0f0f0;
            --text-secondary: #b0b0c0;
            --accent-orange: #ff6b35;
            --border-color: #2a2a3a;
            --spacing-unit: 1rem;
            --border-radius: 12px;
            --transition-speed: 0.3s;
            --shadow: 0 8px 32px rgba(0, 212, 255, 0.1);
            --shadow-green: 0 8px 32px rgba(0, 255, 135, 0.15);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--dark-bg);
            color: var(--text-primary);
            line-height: 1.7;
            overflow-x: hidden;
            background-image: radial-gradient(circle at 20% 30%, rgba(0, 212, 255, 0.05) 0%, transparent 20%),
                              radial-gradient(circle at 80% 70%, rgba(0, 255, 135, 0.05) 0%, transparent 20%);
        }
        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: color var(--transition-speed) ease;
        }
        a:hover {
            color: var(--primary-green);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--border-radius);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-unit);
        }
        .section-padding {
            padding: calc(var(--spacing-unit) * 4) 0;
        }
        h1, h2, h3, h4 {
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 1.5rem;
            color: white;
        }
        h1 {
            font-size: clamp(2.5rem, 5vw, 3.8rem);
            background: linear-gradient(90deg, var(--primary-green), var(--primary-blue));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-top: 1rem;
        }
        h2 {
            font-size: clamp(1.8rem, 4vw, 2.5rem);
            border-left: 5px solid var(--primary-green);
            padding-left: 1rem;
            margin-top: 3rem;
        }
        h3 {
            font-size: 1.5rem;
            color: var(--primary-blue);
            margin-top: 2rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            color: var(--text-secondary);
        }
        .lead {
            font-size: 1.3rem;
            color: var(--text-primary);
            font-weight: 300;
        }
        .highlight {
            background: linear-gradient(90deg, transparent, rgba(0, 255, 135, 0.1), transparent);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            border-left: 4px solid var(--primary-green);
            margin: 2rem 0;
        }
        .keyword-link {
            display: inline-block;
            background-color: rgba(0, 212, 255, 0.1);
            color: var(--primary-blue);
            padding: 0.3rem 0.8rem;
            border-radius: 50px;
            margin: 0.2rem;
            font-size: 0.9rem;
            border: 1px solid transparent;
            transition: all var(--transition-speed) ease;
        }
        .keyword-link:hover {
            background-color: rgba(0, 212, 255, 0.2);
            border-color: var(--primary-blue);
            transform: translateY(-2px);
        }
        em {
            color: var(--primary-green);
            font-style: normal;
            font-weight: 600;
        }
        strong {
            color: white;
            font-weight: 700;
        }
        ul, ol {
            padding-left: 2rem;
            margin-bottom: 1.5rem;
            color: var(--text-secondary);
        }
        li {
            margin-bottom: 0.5rem;
        }
        header {
            background-color: rgba(10, 10, 15, 0.95);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 900;
            background: linear-gradient(90deg, var(--primary-green), var(--primary-blue));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .logo i {
            font-size: 2rem;
        }
        .nav-desktop {
            display: none;
        }
        @media (min-width: 768px) {
            .nav-desktop {
                display: flex;
                gap: 2rem;
            }
            .nav-desktop a {
                color: var(--text-primary);
                font-weight: 500;
                position: relative;
                padding: 0.5rem 0;
            }
            .nav-desktop a::after {
                content: '';
                position: absolute;
                bottom: 0;
                left: 0;
                width: 0;
                height: 2px;
                background: var(--primary-green);
                transition: width var(--transition-speed) ease;
            }
            .nav-desktop a:hover::after {
                width: 100%;
            }
            .hamburger {
                display: none;
            }
        }
        .hamburger {
            font-size: 1.8rem;
            background: none;
            border: none;
            color: var(--text-primary);
            cursor: pointer;
            padding: 0.5rem;
        }
        .nav-mobile {
            position: fixed;
            top: 70px;
            right: -100%;
            width: 80%;
            max-width: 300px;
            height: calc(100vh - 70px);
            background-color: var(--card-bg);
            border-left: 1px solid var(--border-color);
            padding: 2rem;
            transition: right var(--transition-speed) ease;
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
            z-index: 999;
        }
        .nav-mobile.active {
            right: 0;
        }
        .nav-mobile a {
            color: var(--text-primary);
            font-size: 1.2rem;
            padding: 0.8rem 0;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .nav-mobile a i {
            width: 24px;
            color: var(--primary-blue);
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--primary-green);
        }
        .breadcrumb span {
            margin: 0 0.5rem;
        }
        .hero {
            position: relative;
            overflow: hidden;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            background: linear-gradient(135deg, rgba(0, 255, 135, 0.05), rgba(0, 212, 255, 0.05));
            padding: 2rem;
            border: 1px solid var(--border-color);
        }
        .article-meta {
            display: flex;
            gap: 1.5rem;
            color: var(--text-secondary);
            margin-bottom: 2rem;
            flex-wrap: wrap;
        }
        .meta-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .meta-item i {
            color: var(--primary-green);
        }
        .featured-image {
            margin: 3rem 0;
            position: relative;
        }
        .featured-image img {
            width: 100%;
            box-shadow: var(--shadow-green);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-secondary);
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .content-block {
            margin-bottom: 3rem;
        }
        .content-grid {
            display: grid;
            gap: 2rem;
        }
        @media (min-width: 992px) {
            .content-grid {
                grid-template-columns: 2fr 1fr;
            }
        }
        .sidebar-card {
            background-color: var(--card-bg);
            border-radius: var(--border-radius);
            padding: 2rem;
            margin-bottom: 2rem;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow);
        }
        .sidebar-card h3 {
            color: var(--primary-green);
            margin-top: 0;
            font-size: 1.3rem;
        }
        .quick-links ul {
            list-style: none;
            padding: 0;
        }
        .quick-links li {
            margin-bottom: 0.8rem;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 0.8rem;
        }
        .quick-links li:last-child {
            border-bottom: none;
        }
        .quick-links a {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            color: var(--text-primary);
        }
        .quick-links a:hover {
            color: var(--primary-green);
        }
        .quick-links i {
            color: var(--primary-blue);
        }
        .interactive-module {
            background-color: var(--card-bg);
            border-radius: var(--border-radius);
            padding: 2rem;
            margin: 3rem 0;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow);
        }
        .module-title {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 2rem;
        }
        .module-title i {
            font-size: 2rem;
            color: var(--primary-green);
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            color: var(--text-primary);
            font-weight: 500;
        }
        input, textarea, select {
            width: 100%;
            padding: 1rem;
            background-color: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            color: var(--text-primary);
            font-family: inherit;
            font-size: 1rem;
            transition: border-color var(--transition-speed) ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary-blue);
        }
        button, .btn {
            background: linear-gradient(90deg, var(--primary-green), var(--primary-blue));
            color: black;
            border: none;
            padding: 1rem 2rem;
            border-radius: var(--border-radius);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition-speed) ease;
            display: inline-flex;
            align-items: center;
            gap: 0.8rem;
        }
        button:hover, .btn:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-green);
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 1.8rem;
            color: #444;
            cursor: pointer;
            transition: color var(--transition-speed) ease;
        }
        .star:hover,
        .star.active {
            color: #ffd700;
        }
        .comment {
            background-color: rgba(255, 255, 255, 0.03);
            border-radius: var(--border-radius);
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            border-left: 3px solid var(--primary-blue);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 1rem;
            flex-wrap: wrap;
        }
        .comment-author {
            font-weight: 700;
            color: var(--primary-green);
        }
        .comment-date {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        footer {
            background-color: #08080c;
            border-top: 1px solid var(--border-color);
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            margin-bottom: 3rem;
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 900;
            background: linear-gradient(90deg, var(--primary-green), var(--primary-blue));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 1rem;
        }
        .footer-description {
            color: var(--text-secondary);
        }
        .footer-links h4 {
            color: white;
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        friend-link {
            display: block;
            margin-top: 2rem;
            padding-top: 2rem;
            border-top: 1px solid var(--border-color);
        }
        friend-link h4 {
            color: var(--text-primary);
            margin-bottom: 1rem;
        }
        friend-link a {
            color: var(--text-secondary);
            margin-right: 1.5rem;
        }
        friend-link a:hover {
            color: var(--primary-green);
        }
        .copyright {
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.9rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-color);
        }
        .text-center {
            text-align: center;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }