:root {
            --gt-primary: #1a237e; 
            --gt-accent: #ff3d00; 
            --gt-light: #e8eaf6;
            --gt-dark: #0d1117;
            --gt-text: #f5f5f7;
            --gt-text-secondary: #b0b0b0;
            --gt-card-bg: rgba(30, 35, 56, 0.8);
            --gt-border: rgba(255, 255, 255, 0.1);
            --gt-hover: rgba(255, 61, 0, 0.15);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: linear-gradient(135deg, var(--gt-dark) 0%, #1e2338 50%, var(--gt-dark) 100%);
            color: var(--gt-text);
            line-height: 1.8;
            overflow-x: hidden;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #4dabf7;
            text-decoration: none;
            transition: all 0.3s ease;
            border-bottom: 1px dotted transparent;
        }
        a:hover {
            color: var(--gt-accent);
            border-bottom-color: var(--gt-accent);
        }
        .site-header {
            background-color: rgba(13, 17, 23, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--gt-border);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 1rem 5%;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1600px;
            margin: 0 auto;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(to right, #fff, var(--gt-accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -1px;
            text-transform: uppercase;
        }
        .my-logo:hover {
            transform: scale(1.03);
        }
        .main-nav ul {
            display: flex;
            gap: 2.5rem;
            list-style: none;
        }
        .main-nav a {
            color: var(--gt-text);
            font-weight: 600;
            font-size: 1.05rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            padding: 0.5rem 0;
        }
        .main-nav a:hover {
            color: var(--gt-accent);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: var(--gt-text);
            cursor: pointer;
        }
        .breadcrumb {
            background-color: rgba(26, 35, 126, 0.2);
            padding: 0.8rem 5%;
            font-size: 0.9rem;
            border-bottom: 1px solid var(--gt-border);
        }
        .breadcrumb a {
            color: var(--gt-text-secondary);
        }
        .breadcrumb a:last-of-type {
            color: var(--gt-accent);
        }
        .main-content {
            flex: 1;
            max-width: 1200px;
            width: 90%;
            margin: 2rem auto;
            padding: 2rem;
            background-color: var(--gt-card-bg);
            border-radius: 16px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
            border: 1px solid var(--gt-border);
        }
        .article-header {
            text-align: center;
            margin-bottom: 3.5rem;
            padding-bottom: 2.5rem;
            border-bottom: 2px dashed var(--gt-accent);
        }
        h1 {
            font-size: 3.2rem;
            margin-bottom: 1.2rem;
            background: linear-gradient(90deg, #fff, var(--gt-accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            line-height: 1.2;
        }
        .article-meta {
            color: var(--gt-text-secondary);
            font-size: 0.95rem;
            display: flex;
            justify-content: center;
            gap: 2rem;
            flex-wrap: wrap;
        }
        h2 {
            font-size: 2.4rem;
            color: var(--gt-light);
            margin: 3rem 0 1.5rem;
            padding-bottom: 0.75rem;
            border-bottom: 1px solid var(--gt-border);
        }
        h3 {
            font-size: 1.8rem;
            color: #c5cae9;
            margin: 2.5rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: var(--gt-text-secondary);
            margin: 2rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.8rem;
            font-size: 1.15rem;
            text-align: justify;
            hyphens: auto;
        }
        .lead {
            font-size: 1.4rem;
            font-weight: 300;
            color: #bbdefb;
            line-height: 1.9;
            margin-bottom: 2.5rem;
        }
        .highlight-box {
            background: linear-gradient(145deg, rgba(26, 35, 126, 0.3), rgba(13, 17, 23, 0.5));
            border-left: 5px solid var(--gt-accent);
            padding: 2rem;
            margin: 2.5rem 0;
            border-radius: 0 12px 12px 0;
            box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.2);
        }
        .featured-img {
            width: 100%;
            max-height: 600px;
            object-fit: cover;
            border-radius: 12px;
            margin: 2.5rem 0;
            border: 2px solid var(--gt-border);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
            transition: transform 0.5s ease;
        }
        .featured-img:hover {
            transform: scale(1.01);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--gt-text-secondary);
            margin-top: -1.5rem;
            margin-bottom: 2.5rem;
            font-size: 0.95rem;
        }
        .interactive-module {
            background: rgba(19, 23, 34, 0.9);
            border-radius: 12px;
            padding: 2rem;
            margin: 3rem 0;
            border: 1px solid var(--gt-border);
        }
        .module-title {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1.5rem;
            color: var(--gt-accent);
        }
        .module-title i {
            font-size: 1.8rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 1rem;
            background-color: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--gt-border);
            border-radius: 8px;
            color: var(--gt-text);
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--gt-accent);
            box-shadow: 0 0 0 3px var(--gt-hover);
        }
        textarea {
            min-height: 150px;
            resize: vertical;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 2rem;
            margin: 1rem 0;
            color: #ffd700;
        }
        .rating-stars i {
            cursor: pointer;
            transition: transform 0.2s;
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        .btn {
            display: inline-block;
            background: linear-gradient(90deg, var(--gt-primary), var(--gt-accent));
            color: white;
            padding: 1rem 2.5rem;
            border: none;
            border-radius: 50px;
            font-weight: bold;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(255, 61, 0, 0.3);
        }
        .site-footer {
            background-color: var(--gt-dark);
            border-top: 1px solid var(--gt-border);
            padding: 3rem 5% 2rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            max-width: 1600px;
            margin: 0 auto 2rem;
        }
        .footer-section h4 {
            color: var(--gt-light);
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .friend-links {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        friend-link {
            display: block;
            padding: 0.8rem 1.2rem;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 8px;
            transition: all 0.3s;
        }
        friend-link:hover {
            background: rgba(255, 61, 0, 0.1);
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid var(--gt-border);
            color: var(--gt-text-secondary);
            font-size: 0.9rem;
        }
        @media (max-width: 1024px) {
            h1 { font-size: 2.8rem; }
            h2 { font-size: 2.1rem; }
            .main-content { width: 95%; padding: 1.8rem; }
        }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            .main-nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--gt-dark);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1.5rem 5%;
                border-top: 1px solid var(--gt-border);
            }
            .main-nav.active ul {
                display: flex;
            }
            .hamburger { display: block; }
            h1 { font-size: 2.3rem; }
            h2 { font-size: 1.9rem; }
            h3 { font-size: 1.6rem; }
            .lead { font-size: 1.2rem; }
            .article-meta { flex-direction: column; gap: 0.5rem; align-items: center; }
            .footer-content { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            .site-header, .breadcrumb, .main-content, .site-footer { padding-left: 1rem; padding-right: 1rem; }
            h1 { font-size: 2rem; }
            .my-logo { font-size: 1.8rem; }
            .btn { width: 100%; text-align: center; }
        }
        .key-term {
            background: rgba(255, 61, 0, 0.1);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: bold;
            color: #ffab91;
        }
        .quote {
            font-style: italic;
            border-left: 4px solid var(--gt-accent);
            padding-left: 2rem;
            margin: 2.5rem 0;
            color: #e0e0e0;
            font-size: 1.25rem;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        .stat-card {
            background: rgba(255, 255, 255, 0.03);
            border-radius: 10px;
            padding: 1.8rem;
            text-align: center;
            border: 1px solid var(--gt-border);
            transition: transform 0.3s;
        }
        .stat-card:hover {
            transform: translateY(-8px);
            border-color: var(--gt-accent);
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 900;
            color: var(--gt-accent);
            line-height: 1;
        }