:root {
            --primary: #1a1a2e;
            --secondary: #16213e;
            --accent: #0f4c75;
            --highlight: #00b4d8;
            --text: #e6e6e6;
            --text-secondary: #b0b0b0;
            --card-bg: #222831;
            --border: #30475e;
            --success: #4CAF50;
            --warning: #ff9800;
            --danger: #f44336;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background: var(--primary);
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            color: var(--highlight);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #90e0ef;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: var(--secondary);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(45deg, var(--highlight), #0096c7);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo span {
            color: #ffd166;
        }
        .desktop-nav {
            display: flex;
            gap: 30px;
        }
        .desktop-nav a {
            font-weight: 600;
            font-size: 1.1rem;
            position: relative;
            padding: 5px 0;
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--highlight);
            transition: width 0.3s ease;
        }
        .desktop-nav a:hover::after {
            width: 100%;
        }
        .mobile-menu-btn {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: var(--text);
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: var(--card-bg);
            padding: 20px;
            border-top: 1px solid var(--border);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            font-size: 1.1rem;
        }
        .breadcrumb {
            background: rgba(255, 255, 255, 0.05);
            padding: 12px 0;
            font-size: 0.9rem;
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--highlight);
        }
        .breadcrumb span {
            color: var(--text-secondary);
            margin: 0 8px;
        }
        .search-section {
            background: var(--card-bg);
            border-radius: 10px;
            padding: 30px;
            margin: 30px 0;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }
        .search-section h2 {
            margin-bottom: 20px;
            color: var(--highlight);
        }
        .search-form {
            display: flex;
            max-width: 600px;
        }
        .search-form input {
            flex: 1;
            padding: 15px 20px;
            border: 2px solid var(--border);
            border-radius: 8px 0 0 8px;
            background: var(--secondary);
            color: var(--text);
            font-size: 1rem;
        }
        .search-form button {
            padding: 0 25px;
            background: var(--accent);
            color: white;
            border: none;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s ease;
        }
        .search-form button:hover {
            background: var(--highlight);
        }
        main {
            padding: 30px 0;
        }
        article {
            background: var(--card-bg);
            border-radius: 15px;
            padding: 40px;
            margin-bottom: 40px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
            border: 1px solid var(--border);
        }
        h1 {
            font-size: 2.8rem;
            margin-bottom: 20px;
            color: var(--highlight);
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            margin: 40px 0 20px;
            color: #ffd166;
            border-left: 5px solid var(--highlight);
            padding-left: 15px;
        }
        h3 {
            font-size: 1.6rem;
            margin: 30px 0 15px;
            color: #90e0ef;
        }
        h4 {
            font-size: 1.3rem;
            margin: 25px 0 12px;
            color: var(--text);
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.3rem;
            color: var(--text-secondary);
            background: rgba(15, 76, 117, 0.1);
            padding: 25px;
            border-radius: 10px;
            margin-bottom: 35px;
            border-left: 4px solid var(--highlight);
        }
        .highlight-box {
            background: rgba(255, 209, 102, 0.1);
            border: 2px solid #ffd166;
            border-radius: 10px;
            padding: 25px;
            margin: 30px 0;
        }
        .highlight-box h3 {
            color: #ffd166;
            margin-top: 0;
        }
        .car-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 25px;
            margin: 40px 0;
        }
        .car-card {
            background: var(--secondary);
            border-radius: 12px;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid var(--border);
        }
        .car-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 180, 216, 0.2);
        }
        .car-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .car-card-content {
            padding: 20px;
        }
        .car-card h4 {
            color: #90e0ef;
            margin-bottom: 10px;
        }
        .rating {
            color: #ffd700;
            margin: 10px 0;
        }
        .difficulty {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-top: 10px;
        }
        .easy {
            background: rgba(76, 175, 80, 0.2);
            color: #4CAF50;
        }
        .medium {
            background: rgba(255, 152, 0, 0.2);
            color: #ff9800;
        }
        .hard {
            background: rgba(244, 67, 54, 0.2);
            color: #f44336;
        }
        .stats-table {
            width: 100%;
            border-collapse: collapse;
            margin: 30px 0;
            background: var(--secondary);
            border-radius: 10px;
            overflow: hidden;
        }
        .stats-table th, .stats-table td {
            padding: 15px;
            text-align: left;
            border-bottom: 1px solid var(--border);
        }
        .stats-table th {
            background: var(--accent);
            color: white;
            font-weight: 600;
        }
        .stats-table tr:hover {
            background: rgba(255, 255, 255, 0.05);
        }
        .featured-image {
            width: 100%;
            border-radius: 15px;
            margin: 40px 0;
            border: 3px solid var(--border);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
        }
        .interactive-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin: 50px 0;
        }
        .comment-form, .rating-form {
            background: var(--secondary);
            padding: 30px;
            border-radius: 15px;
            border: 1px solid var(--border);
        }
        .comment-form h3, .rating-form h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .form-group input, .form-group textarea, .form-group select {
            width: 100%;
            padding: 12px 15px;
            background: var(--primary);
            border: 2px solid var(--border);
            border-radius: 8px;
            color: var(--text);
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        .form-group input:focus, .form-group textarea:focus, .form-group select:focus {
            border-color: var(--highlight);
            outline: none;
        }
        .form-group textarea {
            min-height: 150px;
            resize: vertical;
        }
        .star-rating {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: var(--border);
            cursor: pointer;
            transition: color 0.2s ease;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #ffd700;
        }
        .submit-btn {
            background: var(--accent);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s ease;
            width: 100%;
        }
        .submit-btn:hover {
            background: var(--highlight);
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            margin: 50px 0;
        }
        .web-link {
            background: var(--secondary);
            padding: 20px;
            border-radius: 10px;
            text-align: center;
            transition: transform 0.3s ease, background 0.3s ease;
            border: 1px solid transparent;
        }
        .web-link:hover {
            transform: translateY(-5px);
            background: var(--accent);
            border-color: var(--highlight);
        }
        footer {
            background: var(--secondary);
            padding: 50px 0 20px;
            margin-top: 60px;
            border-top: 3px solid var(--accent);
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-column h4 {
            color: var(--highlight);
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .footer-column ul {
            list-style: none;
        }
        .footer-column ul li {
            margin-bottom: 12px;
        }
        .footer-column ul li a {
            color: var(--text-secondary);
        }
        .footer-column ul li a:hover {
            color: var(--highlight);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid var(--border);
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .interactive-section {
                grid-template-columns: 1fr;
            }
            .web-links {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .mobile-menu-btn {
                display: block;
            }
            .car-grid {
                grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            }
            .web-links {
                grid-template-columns: repeat(2, 1fr);
            }
            article {
                padding: 25px;
            }
            .header-top {
                padding: 12px 0;
            }
        }
        @media (max-width: 576px) {
            .container {
                padding: 0 15px;
            }
            .web-links {
                grid-template-columns: 1fr;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 2rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input {
                border-radius: 8px;
                margin-bottom: 10px;
            }
            .search-form button {
                border-radius: 8px;
                padding: 15px;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        article {
            animation: fadeIn 0.8s ease-out;
        }
        .car-card {
            animation: fadeIn 0.5s ease-out;
        }
        .text-center {
            text-align: center;
        }
        .mb-30 {
            margin-bottom: 30px;
        }
        .mt-40 {
            margin-top: 40px;
        }
        .emoji {
            font-size: 1.2em;
            margin: 0 5px;
        }
        .keyword {
            background: rgba(0, 180, 216, 0.2);
            padding: 2px 6px;
            border-radius: 4px;
            font-weight: 600;
        }
        .tip {
            background: rgba(255, 215, 0, 0.1);
            border-left: 4px solid #ffd700;
            padding: 15px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }
        .warning {
            background: rgba(244, 67, 54, 0.1);
            border-left: 4px solid var(--danger);
            padding: 15px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }