:root {
            --primary-dark: #0c1a2a;
            --primary-blue: #1a3a5f;
            --accent-orange: #f0a52d;
            --accent-red: #c92a2a;
            --neutral-light: #f8f9fa;
            --neutral-gray: #6c757d;
            --neutral-dark: #212529;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            --transition: all 0.3s ease;
            --border-radius: 8px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #0a1520;
            color: #e9ecef;
            line-height: 1.7;
            background-image: linear-gradient(to bottom, #0a1520 0%, #0c1a2a 100%);
            min-height: 100vh;
        }
        a {
            color: #5dade2;
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-orange);
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: var(--primary-dark);
            border-bottom: 2px solid var(--primary-blue);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(90deg, #f0a52d, #c92a2a);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #ced4da;
            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-color: var(--accent-orange);
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after,
        .main-nav a.active::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .search-form {
            display: flex;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50px;
            overflow: hidden;
            padding: 0.3rem;
        }
        .search-input {
            background: transparent;
            border: none;
            color: white;
            padding: 0.5rem 1rem;
            width: 200px;
        }
        .search-input:focus {
            outline: none;
        }
        .search-btn {
            background: var(--accent-orange);
            border: none;
            color: var(--primary-dark);
            padding: 0.5rem 1rem;
            border-radius: 50px;
            cursor: pointer;
            font-weight: 600;
        }
        .search-btn:hover {
            background: #e69500;
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: var(--neutral-gray);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .breadcrumb a {
            color: var(--neutral-gray);
        }
        .breadcrumb a:hover {
            color: var(--accent-orange);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: rgba(26, 58, 95, 0.3);
            border-radius: var(--border-radius);
            padding: 2.5rem;
            border: 1px solid rgba(240, 165, 45, 0.1);
            box-shadow: var(--shadow);
        }
        .article-header {
            margin-bottom: 2.5rem;
            padding-bottom: 1.5rem;
            border-bottom: 2px solid rgba(240, 165, 45, 0.3);
        }
        h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 1rem;
            color: #fff;
            background: linear-gradient(90deg, #f0a52d, #ffffff);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        h2 {
            font-size: 2rem;
            color: var(--accent-orange);
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid rgba(240, 165, 45, 0.2);
        }
        h3 {
            font-size: 1.5rem;
            color: #5dade2;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.2rem;
            color: #a3d9ff;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            color: #ced4da;
            font-weight: 500;
            background: rgba(240, 165, 45, 0.05);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            border-left: 4px solid var(--accent-orange);
        }
        .highlight {
            background-color: rgba(240, 165, 45, 0.15);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .featured-img {
            width: 100%;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            border: 2px solid var(--primary-blue);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
            transition: transform 0.5s ease;
        }
        .featured-img:hover {
            transform: scale(1.005);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--neutral-gray);
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .content-link {
            font-weight: 700;
            color: var(--accent-orange);
            border-bottom: 1px dashed var(--accent-orange);
        }
        .content-link:hover {
            border-bottom-style: solid;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: rgba(33, 37, 41, 0.7);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            text-align: center;
            border-top: 4px solid var(--accent-red);
        }
        .stat-card i {
            font-size: 2rem;
            color: var(--accent-orange);
            margin-bottom: 1rem;
        }
        .operator-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .operator-card {
            background: rgba(26, 58, 95, 0.5);
            border-radius: var(--border-radius);
            overflow: hidden;
            text-align: center;
            transition: var(--transition);
            border: 1px solid rgba(240, 165, 45, 0.1);
        }
        .operator-card:hover {
            transform: translateY(-5px);
            border-color: var(--accent-orange);
            box-shadow: 0 10px 20px rgba(240, 165, 45, 0.2);
        }
        .op-icon {
            height: 80px;
            background: var(--primary-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.5rem;
            color: white;
        }
        .op-name {
            padding: 1rem;
            font-weight: 700;
            color: #fff;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: rgba(26, 58, 95, 0.3);
            border-radius: var(--border-radius);
            padding: 1.5rem;
            border: 1px solid rgba(240, 165, 45, 0.1);
        }
        .widget-title {
            font-size: 1.3rem;
            color: var(--accent-orange);
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid rgba(240, 165, 45, 0.3);
        }
        .quick-links ul {
            list-style: none;
        }
        .quick-links li {
            margin-bottom: 0.8rem;
            padding-left: 1.2rem;
            position: relative;
        }
        .quick-links li::before {
            content: '▸';
            position: absolute;
            left: 0;
            color: var(--accent-orange);
        }
        .interactive-section {
            background: rgba(33, 37, 41, 0.7);
            border-radius: var(--border-radius);
            padding: 2rem;
            margin: 3rem 0;
            border-left: 6px solid var(--accent-red);
        }
        .interactive-title {
            display: flex;
            align-items: center;
            gap: 1rem;
            color: var(--accent-orange);
            margin-bottom: 1.5rem;
        }
        .interactive-title i {
            font-size: 1.8rem;
        }
        .rating-system {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            justify-content: center;
            font-size: 2rem;
            color: var(--neutral-gray);
            cursor: pointer;
            margin-bottom: 1rem;
        }
        .stars .star:hover,
        .stars .star.active {
            color: var(--accent-orange);
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            color: #ced4da;
            font-weight: 600;
        }
        .form-input,
        .form-textarea {
            width: 100%;
            padding: 0.8rem 1rem;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--border-radius);
            color: white;
            font-size: 1rem;
        }
        .form-input:focus,
        .form-textarea:focus {
            outline: none;
            border-color: var(--accent-orange);
            background: rgba(255, 255, 255, 0.15);
        }
        .form-textarea {
            min-height: 120px;
            resize: vertical;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-orange), #d35400);
            color: white;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: 50px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            background: linear-gradient(135deg, #e69500, #b34700);
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(240, 165, 45, 0.3);
            text-decoration: none;
        }
        .btn-block {
            width: 100%;
        }
        .site-footer {
            background-color: var(--primary-dark);
            border-top: 2px solid var(--primary-blue);
            padding: 3rem 0 2rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-widget h3 {
            color: var(--accent-orange);
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
            color: #5dade2;
        }
        friend-link:hover {
            color: var(--accent-orange);
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--neutral-gray);
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--primary-dark);
                padding: 1rem;
                box-shadow: 0 10px 15px rgba(0, 0, 0, 0.3);
                transform: translateY(-150%);
                transition: transform 0.4s ease;
                z-index: 999;
            }
            .main-nav.active {
                transform: translateY(0);
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1rem;
            }
            .search-form {
                margin-top: 1rem;
                width: 100%;
            }
            .search-input {
                width: 100%;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .article-content {
                padding: 1.5rem;
            }
            .main-content {
                gap: 1.5rem;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .article-content, .sidebar-widget {
            animation: fadeIn 0.6s ease-out;
        }
        .schema-markup {
            display: none;
        }