:root {
            --primary-dark: #1a1a1a;
            --secondary-dark: #2d2d2d;
            --accent-rust: #d35400;
            --accent-rust-light: #e67e22;
            --text-primary: #f5f5f5;
            --text-secondary: #bdc3c7;
            --border-color: #444;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
            --transition: all 0.3s ease;
            --container-max: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--primary-dark);
            overflow-x: hidden;
        }
        a {
            color: var(--accent-rust-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: var(--secondary-dark);
            border-bottom: 2px solid var(--accent-rust);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-rust);
            text-transform: uppercase;
            letter-spacing: -1px;
        }
        .logo span {
            color: var(--text-primary);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 1.1rem;
            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-rust);
            transition: var(--transition);
        }
        .main-nav a:hover:after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: var(--text-primary);
            cursor: pointer;
        }
        .breadcrumb {
            background-color: rgba(45, 45, 45, 0.8);
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb .separator {
            margin: 0 0.5rem;
            color: var(--accent-rust);
        }
        .hero {
            background: linear-gradient(rgba(26, 26, 26, 0.9), rgba(45, 45, 45, 0.9)), url('https://images.unsplash.com/photo-1550745165-9bc0b252726f?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80');
            background-size: cover;
            background-position: center;
            padding: 4rem 0;
            text-align: center;
            border-radius: 0 0 20px 20px;
            margin-bottom: 3rem;
        }
        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 1rem;
            color: #fff;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.7);
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            color: var(--text-secondary);
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin-bottom: 4rem;
        }
        .main-content {
            background-color: var(--secondary-dark);
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: var(--shadow);
        }
        .sidebar {
            background-color: var(--secondary-dark);
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        h1, h2, h3 {
            color: #fff;
            margin-top: 2.5rem;
            margin-bottom: 1.2rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            border-left: 5px solid var(--accent-rust);
            padding-left: 1rem;
        }
        h2 {
            font-size: 2.2rem;
            border-bottom: 2px solid var(--border-color);
            padding-bottom: 0.5rem;
        }
        h3 {
            font-size: 1.7rem;
            color: var(--accent-rust-light);
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background-color: rgba(211, 84, 0, 0.15);
            border-left: 4px solid var(--accent-rust);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .highlight p {
            margin-bottom: 0;
            font-weight: 600;
        }
        .specs-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2.5rem 0;
            box-shadow: var(--shadow);
        }
        .specs-table th, .specs-table td {
            border: 1px solid var(--border-color);
            padding: 1.2rem;
            text-align: left;
        }
        .specs-table th {
            background-color: var(--accent-rust);
            color: white;
            font-weight: 700;
        }
        .specs-table tr:nth-child(even) {
            background-color: rgba(255, 255, 255, 0.05);
        }
        .specs-table tr:hover {
            background-color: rgba(211, 84, 0, 0.1);
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 10px;
            margin: 2.5rem auto;
            display: block;
            box-shadow: var(--shadow);
            border: 2px solid var(--border-color);
        }
        .user-interaction {
            background-color: var(--secondary-dark);
            padding: 2.5rem;
            border-radius: 12px;
            margin: 3rem 0;
            box-shadow: var(--shadow);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }
        .interaction-form {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--text-secondary);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 0.9rem;
            border-radius: 6px;
            border: 1px solid var(--border-color);
            background-color: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--accent-rust);
            box-shadow: 0 0 0 2px rgba(211, 84, 0, 0.3);
        }
        .btn {
            padding: 1rem 2rem;
            background-color: var(--accent-rust);
            color: white;
            border: none;
            border-radius: 6px;
            font-weight: 700;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            display: inline-block;
        }
        .btn:hover {
            background-color: var(--accent-rust-light);
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
            text-decoration: none;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 1.8rem;
            color: #f1c40f;
        }
        .star {
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover {
            transform: scale(1.2);
        }
        .footer-links {
            background-color: var(--secondary-dark);
            padding: 3rem 0;
            margin-top: 4rem;
            border-top: 2px solid var(--border-color);
        }
        .web-links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-bottom: 2rem;
        }
        .web-link {
            background-color: rgba(255, 255, 255, 0.05);
            padding: 1.2rem;
            border-radius: 8px;
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: rgba(211, 84, 0, 0.2);
            transform: translateY(-5px);
        }
        .web-link a {
            font-weight: 600;
            display: block;
            font-size: 1.1rem;
        }
        .site-footer {
            background-color: #111;
            padding: 3rem 0 2rem;
            text-align: center;
            border-top: 2px solid var(--accent-rust);
        }
        .copyright {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-top: 2rem;
            padding-top: 2rem;
            border-top: 1px solid var(--border-color);
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .hero h1 {
                font-size: 2.6rem;
            }
        }
        @media (max-width: 768px) {
            .main-nav ul {
                position: fixed;
                top: 85px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 85px);
                background-color: var(--secondary-dark);
                flex-direction: column;
                align-items: center;
                justify-content: flex-start;
                padding-top: 3rem;
                gap: 2.5rem;
                transition: var(--transition);
                z-index: 999;
            }
            .main-nav.active ul {
                left: 0;
            }
            .hamburger {
                display: block;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            h1 {
                font-size: 2.3rem;
            }
            h2 {
                font-size: 1.9rem;
            }
            .main-content, .sidebar, .user-interaction {
                padding: 1.8rem;
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 1.9rem;
            }
            .hero p {
                font-size: 1.1rem;
            }
            .btn {
                width: 100%;
            }
        }