:root {
            --primary-dark: #0f1a2a;
            --primary-blue: #1a5fce;
            --primary-accent: #00d4ff;
            --secondary-purple: #6a11cb;
            --text-light: #f0f6ff;
            --text-muted: #a0b8d9;
            --background-card: rgba(15, 26, 42, 0.8);
            --border-color: #2a3d5f;
            --success-green: #10b981;
            --warning-amber: #f59e0b;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --spacing-xl: 6rem;
            --border-radius: 12px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
            --gradient-primary: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
            --gradient-hero: linear-gradient(180deg, rgba(15, 26, 42, 0.9) 0%, rgba(26, 95, 206, 0.2) 100%);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            background-color: var(--primary-dark);
            color: var(--text-light);
            line-height: 1.7;
            overflow-x: hidden;
            background-image: radial-gradient(circle at 20% 30%, rgba(26, 95, 206, 0.1) 0%, transparent 20%),
                              radial-gradient(circle at 80% 70%, rgba(106, 17, 203, 0.1) 0%, transparent 20%);
        }
        a {
            color: var(--primary-accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #ffffff;
            text-shadow: 0 0 8px rgba(0, 212, 255, 0.6);
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }
        header {
            background: rgba(15, 26, 42, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: var(--spacing-sm) 0;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
        }
        .my-logo span {
            color: var(--text-light);
            -webkit-text-fill-color: initial;
        }
        .desktop-nav {
            display: flex;
            gap: var(--spacing-md);
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
        }
        .nav-link {
            padding: var(--spacing-xs) var(--spacing-sm);
            border-radius: var(--border-radius);
            font-weight: 600;
        }
        .nav-link:hover {
            background: rgba(26, 95, 206, 0.2);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text-light);
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: var(--background-card);
            border-top: 1px solid var(--border-color);
            padding: var(--spacing-sm);
            gap: var(--spacing-sm);
        }
        .mobile-nav.active {
            display: flex;
        }
        .breadcrumb {
            padding: var(--spacing-sm) 0;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary-accent);
        }
        .hero {
            padding: var(--spacing-xl) 0;
            text-align: center;
            background: var(--gradient-hero);
            border-radius: var(--border-radius);
            margin: var(--spacing-md) 0;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 Z" fill="rgba(0,212,255,0.03)"/></svg>') no-repeat bottom right;
            z-index: -1;
        }
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: var(--spacing-md);
            background: linear-gradient(to right, #ffffff, var(--primary-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto var(--spacing-lg);
            color: var(--text-muted);
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: var(--spacing-lg);
            margin: var(--spacing-lg) 0;
        }
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: var(--background-card);
            border-radius: var(--border-radius);
            padding: var(--spacing-lg);
            border: 1px solid var(--border-color);
        }
        .article-section {
            margin-bottom: var(--spacing-xl);
        }
        h2 {
            font-size: 2.2rem;
            margin: var(--spacing-lg) 0 var(--spacing-md);
            color: var(--primary-accent);
            padding-bottom: var(--spacing-xs);
            border-bottom: 2px solid var(--border-color);
        }
        h3 {
            font-size: 1.8rem;
            margin: var(--spacing-md) 0 var(--spacing-sm);
            color: #ffffff;
        }
        h4 {
            font-size: 1.4rem;
            margin: var(--spacing-sm) 0;
            color: var(--text-muted);
        }
        p {
            margin-bottom: var(--spacing-md);
            text-align: justify;
        }
        .highlight-box {
            background: linear-gradient(135deg, rgba(26, 95, 206, 0.15), rgba(106, 17, 203, 0.15));
            border-left: 4px solid var(--primary-accent);
            padding: var(--spacing-md);
            margin: var(--spacing-md) 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .image-container {
            margin: var(--spacing-lg) 0;
            text-align: center;
        }
        .feature-img {
            width: 100%;
            max-width: 800px;
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .feature-img:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
        }
        .interactive-section {
            background: rgba(15, 26, 42, 0.6);
            border-radius: var(--border-radius);
            padding: var(--spacing-lg);
            margin: var(--spacing-lg) 0;
            border: 1px solid var(--border-color);
        }
        .interactive-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: var(--spacing-md);
            margin-top: var(--spacing-md);
        }
        .form-group {
            margin-bottom: var(--spacing-md);
        }
        label {
            display: block;
            margin-bottom: var(--spacing-xs);
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            color: var(--text-light);
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary-accent);
            box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.2);
        }
        button, .btn {
            background: var(--gradient-primary);
            color: white;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        button:hover, .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(26, 95, 206, 0.4);
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: var(--spacing-sm) 0;
        }
        .star {
            color: var(--text-muted);
            font-size: 1.5rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover, .star.active {
            color: var(--warning-amber);
            transform: scale(1.2);
        }
        aside {
            background: var(--background-card);
            border-radius: var(--border-radius);
            padding: var(--spacing-lg);
            border: 1px solid var(--border-color);
            height: fit-content;
            position: sticky;
            top: 100px;
        }
        .sidebar-widget {
            margin-bottom: var(--spacing-lg);
        }
        .widget-title {
            font-size: 1.3rem;
            margin-bottom: var(--spacing-md);
            color: var(--primary-accent);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            margin-bottom: var(--spacing-sm);
            padding-bottom: var(--spacing-sm);
            border-bottom: 1px solid rgba(42, 61, 95, 0.5);
        }
        .related-links a {
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }
        .related-links i {
            color: var(--primary-blue);
        }
        .update-info {
            background: rgba(16, 185, 129, 0.1);
            border: 1px solid rgba(16, 185, 129, 0.3);
            border-radius: var(--border-radius);
            padding: var(--spacing-md);
            margin-top: var(--spacing-lg);
        }
        footer {
            background: rgba(10, 18, 30, 0.95);
            border-top: 1px solid var(--border-color);
            margin-top: var(--spacing-xl);
            padding: var(--spacing-xl) 0 var(--spacing-md);
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.03);
            padding: var(--spacing-sm);
            border-radius: var(--border-radius);
            margin: var(--spacing-xs) 0;
            transition: var(--transition);
        }
        friend-link:hover {
            background: rgba(26, 95, 206, 0.15);
            padding-left: var(--spacing-md);
        }
        .copyright {
            text-align: center;
            padding-top: var(--spacing-md);
            border-top: 1px solid var(--border-color);
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-in {
            animation: fadeInUp 0.6s ease-out forwards;
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .content-grid, .interactive-grid {
                grid-template-columns: 1fr;
            }
        }