:root {
            --primary-dark: #0a0e17;
            --primary-accent: #00a8ff;
            --secondary-accent: #ff6b00;
            --text-primary: #e0e0e0;
            --text-secondary: #a0a0a0;
            --bg-card: #141a2d;
            --border-color: #2a3450;
            --success-color: #2ecc71;
            --warning-color: #f39c12;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', system-ui, sans-serif;
        }
        body {
            background-color: var(--primary-dark);
            color: var(--text-primary);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-accent);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: var(--secondary-accent);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(to right, #0a0e17, #1a223f);
            border-bottom: 2px solid var(--border-color);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(45deg, #00a8ff, #ff6b00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--secondary-accent);
            transition: width 0.3s;
        }
        .main-nav a:hover:after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--primary-accent);
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        .breadcrumb a {
            margin: 0 5px;
        }
        .breadcrumb span {
            margin: 0 5px;
        }
        .search-container {
            background: var(--bg-card);
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        }
        .search-form {
            display: flex;
            max-width: 600px;
        }
        .search-form input {
            flex: 1;
            padding: 15px 20px;
            border: 2px solid var(--border-color);
            border-right: none;
            border-radius: 50px 0 0 50px;
            background: #0d1220;
            color: var(--text-primary);
            font-size: 1rem;
        }
        .search-form button {
            padding: 0 30px;
            background: linear-gradient(to right, var(--primary-accent), #0097e6);
            border: none;
            border-radius: 0 50px 50px 0;
            color: white;
            font-weight: bold;
            cursor: pointer;
            transition: opacity 0.3s;
        }
        .search-form button:hover {
            opacity: 0.9;
        }
        .article-header {
            margin: 3rem 0;
            text-align: center;
        }
        .article-header h1 {
            font-size: 3.2rem;
            margin-bottom: 1.5rem;
            background: linear-gradient(to right, #00a8ff, #ff6b00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }
        .article-meta {
            color: var(--text-secondary);
            font-size: 0.95rem;
            display: flex;
            justify-content: center;
            gap: 2rem;
            flex-wrap: wrap;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 3rem 0;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .main-content {
            font-size: 1.1rem;
        }
        .main-content h2 {
            font-size: 2.2rem;
            margin: 3rem 0 1.5rem;
            color: var(--primary-accent);
            border-left: 5px solid var(--secondary-accent);
            padding-left: 15px;
        }
        .main-content h3 {
            font-size: 1.8rem;
            margin: 2.5rem 0 1.2rem;
            color: var(--text-primary);
        }
        .main-content h4 {
            font-size: 1.4rem;
            margin: 2rem 0 1rem;
            color: var(--text-secondary);
        }
        .main-content p {
            margin-bottom: 1.8rem;
            text-align: justify;
        }
        .highlight-box {
            background: var(--bg-card);
            border-left: 4px solid var(--warning-color);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            background: var(--bg-card);
            border-radius: 8px;
            overflow: hidden;
        }
        .data-table th, .data-table td {
            padding: 1rem;
            border: 1px solid var(--border-color);
            text-align: left;
        }
        .data-table th {
            background: #1a223f;
            font-weight: 700;
        }
        .featured-image {
            width: 100%;
            height: auto;
            border-radius: 10px;
            margin: 2.5rem 0;
            border: 2px solid var(--border-color);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
            transition: transform 0.5s ease;
        }
        .featured-image:hover {
            transform: scale(1.01);
        }
        .sidebar {
            background: var(--bg-card);
            padding: 2rem;
            border-radius: 10px;
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        .sidebar h3 {
            color: var(--primary-accent);
            margin-bottom: 1.5rem;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-color);
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 1rem;
            padding-bottom: 1rem;
            border-bottom: 1px dashed var(--border-color);
        }
        .related-links li:last-child {
            border-bottom: none;
        }
        .interaction-section {
            background: var(--bg-card);
            padding: 2.5rem;
            border-radius: 10px;
            margin: 3rem 0;
        }
        .interaction-section h2 {
            text-align: center;
            margin-bottom: 2rem;
        }
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
            margin-bottom: 3rem;
        }
        .star-rating {
            display: flex;
            gap: 10px;
            font-size: 2rem;
            color: #555;
            justify-content: center;
        }
        .star-rating .star {
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating .star:hover,
        .star-rating .star.active {
            color: var(--warning-color);
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .form-group label {
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea {
            padding: 15px;
            border: 2px solid var(--border-color);
            border-radius: 8px;
            background: #0d1220;
            color: var(--text-primary);
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary-accent);
        }
        .submit-btn {
            padding: 15px 30px;
            background: linear-gradient(to right, var(--primary-accent), #0097e6);
            border: none;
            border-radius: 50px;
            color: white;
            font-weight: bold;
            font-size: 1.1rem;
            cursor: pointer;
            transition: transform 0.3s, opacity 0.3s;
            align-self: center;
            min-width: 200px;
        }
        .submit-btn:hover {
            opacity: 0.9;
            transform: translateY(-3px);
        }
        .site-footer {
            background: #050811;
            border-top: 2px solid var(--border-color);
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 3rem;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h4 {
            color: var(--primary-accent);
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            background: #0d1220;
            padding: 1rem;
            margin-bottom: 1rem;
            border-radius: 8px;
            border-left: 4px solid var(--secondary-accent);
            transition: transform 0.3s;
        }
        friend-link:hover {
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
                order: 1;
            }
            .my-logo {
                order: 0;
                font-size: 1.8rem;
            }
            .main-nav {
                order: 2;
                flex-basis: 100%;
                display: none;
                margin-top: 1rem;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1rem;
            }
            .article-header h1 {
                font-size: 2.5rem;
            }
            .content-grid {
                gap: 2rem;
            }
            .interaction-section {
                padding: 1.5rem;
            }
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .main-content > * {
            animation: fadeInUp 0.6s ease-out forwards;
            opacity: 0;
        }
        .main-content > *:nth-child(1) { animation-delay: 0.1s; }
        .main-content > *:nth-child(2) { animation-delay: 0.2s; }
        .main-content > *:nth-child(3) { animation-delay: 0.3s; }
        .main-content > *:nth-child(4) { animation-delay: 0.4s; }
        .main-content > *:nth-child(5) { animation-delay: 0.5s; }