:root {
            --primary: #0066b2;
            --primary-dark: #004d88;
            --secondary: #ffcc00;
            --accent: #dc0000;
            --dark: #1a1a1a;
            --light: #f8f9fa;
            --gray: #6c757d;
            --transition: all 0.3s ease;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --radius: 8px;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #fff;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--dark) 0%, #2a2a2a 100%);
            color: white;
            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;
        }
        .logo a {
            font-family: 'Impact', 'Arial Black', sans-serif;
            font-size: 2.2rem;
            font-weight: bold;
            color: white;
            text-decoration: none;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo a span {
            color: var(--secondary);
            text-shadow: 0 0 8px rgba(255, 204, 0, 0.5);
        }
        .logo a:hover {
            color: var(--secondary);
        }
        .breadcrumb {
            background-color: #f1f3f5;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "/";
            margin: 0 10px;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .current {
            color: var(--dark);
            font-weight: 600;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 500;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--secondary);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--secondary);
            transition: var(--transition);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        .hero {
            background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://images.unsplash.com/photo-1575361204480-aadea25e6e68?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 4rem 2rem;
            text-align: center;
            border-radius: var(--radius);
            margin-bottom: 3rem;
        }
        .hero h1 {
            font-size: 3rem;
            margin-bottom: 1rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            opacity: 0.9;
        }
        main {
            padding: 2rem 0;
        }
        article {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            article {
                grid-template-columns: 1fr;
            }
        }
        .content-area {
            background: white;
            padding: 2rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        h1, h2, h3 {
            color: var(--dark);
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.5rem;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-dark);
            padding-left: 1rem;
            border-left: 5px solid var(--accent);
        }
        h3 {
            font-size: 1.5rem;
            color: var(--dark);
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.25rem;
            font-weight: 500;
            color: var(--primary-dark);
            background-color: #f0f8ff;
            padding: 1.5rem;
            border-radius: var(--radius);
            border-left: 4px solid var(--primary);
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fff8e1;
            padding: 1.5rem;
            border-radius: var(--radius);
            border: 1px dashed var(--secondary);
            margin: 2rem 0;
        }
        .note {
            background-color: #e8f4fd;
            padding: 1.5rem;
            border-radius: var(--radius);
            border-left: 4px solid var(--primary);
            margin: 2rem 0;
        }
        .note i {
            color: var(--primary);
            margin-right: 10px;
        }
        .search-box {
            background: var(--light);
            padding: 2rem;
            border-radius: var(--radius);
            margin-bottom: 2rem;
            text-align: center;
        }
        .search-box h3 {
            margin-top: 0;
            color: var(--primary-dark);
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 1.5rem auto 0;
        }
        .search-form input {
            flex: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid #ddd;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 1.8rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            transition: var(--transition);
            font-size: 1rem;
        }
        .search-form button:hover {
            background: var(--primary-dark);
        }
        .user-feedback {
            background: #f9f9f9;
            padding: 2.5rem;
            border-radius: var(--radius);
            margin: 3rem 0;
            border: 1px solid #eee;
        }
        .user-feedback h2 {
            text-align: center;
            margin-top: 0;
            border: none;
            padding-left: 0;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }
        .feedback-form {
            background: white;
            padding: 1.8rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .feedback-form h3 {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 0;
        }
        .feedback-form h3 i {
            color: var(--secondary);
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark);
        }
        .form-control {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid #ddd;
            border-radius: var(--radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 102, 178, 0.1);
        }
        textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }
        .rating {
            display: flex;
            gap: 5px;
            flex-direction: row-reverse;
            justify-content: flex-end;
        }
        .rating input {
            display: none;
        }
        .rating label {
            cursor: pointer;
            font-size: 1.8rem;
            color: #ddd;
            transition: var(--transition);
        }
        .rating input:checked ~ label,
        .rating label:hover,
        .rating label:hover ~ label {
            color: var(--secondary);
        }
        .btn {
            display: inline-block;
            background: var(--primary);
            color: white;
            padding: 0.9rem 2rem;
            border-radius: var(--radius);
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            font-size: 1rem;
            text-align: center;
        }
        .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.1);
        }
        .btn-accent {
            background: var(--accent);
        }
        .btn-accent:hover {
            background: #b30000;
        }
        .sidebar {
            position: sticky;
            top: 120px;
            align-self: start;
        }
        .sidebar-widget {
            background: white;
            padding: 1.8rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
        }
        .sidebar-widget h3 {
            margin-top: 0;
            padding-bottom: 0.8rem;
            border-bottom: 2px solid var(--light);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-widget h3 i {
            color: var(--primary);
        }
        .quick-links ul {
            list-style: none;
        }
        .quick-links li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed #eee;
        }
        .quick-links li:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        .quick-links a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--dark);
        }
        .quick-links a:hover {
            color: var(--primary);
            padding-left: 5px;
        }
        .quick-links i {
            color: var(--gray);
            font-size: 0.9rem;
        }
        .featured-img {
            border-radius: var(--radius);
            overflow: hidden;
            margin: 1rem 0;
            border: 1px solid #eee;
        }
        .featured-img figcaption {
            padding: 1rem;
            font-style: italic;
            color: var(--gray);
            font-size: 0.9rem;
            text-align: center;
            background: #fafafa;
        }
        .site-footer {
            background: var(--dark);
            color: #bbb;
            padding: 3rem 0 2rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-widget h4 {
            color: white;
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--primary);
            display: inline-block;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #bbb;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-links a:hover {
            color: var(--secondary);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin: 2rem 0;
            padding: 1.5rem;
            background: rgba(255,255,255,0.05);
            border-radius: var(--radius);
        }
        friend-link h4 {
            color: white;
            margin-bottom: 1rem;
        }
        friend-link ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        friend-link a {
            background: rgba(255,255,255,0.1);
            padding: 0.5rem 1rem;
            border-radius: 20px;
            color: #ddd;
            font-size: 0.9rem;
        }
        friend-link a:hover {
            background: var(--primary);
            color: white;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #888;
        }
        .copyright a {
            color: var(--secondary);
        }
        @media (max-width: 768px) {
            html {
                font-size: 15px;
            }
            .header-container {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            .main-nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.4s ease;
            }
            .main-nav.active {
                max-height: 300px;
                margin-top: 1rem;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li {
                width: 100%;
            }
            .main-nav a {
                display: block;
                padding: 0.8rem 0;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .content-area, .sidebar-widget {
                padding: 1.5rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input {
                border-radius: var(--radius);
                margin-bottom: 10px;
            }
            .search-form button {
                border-radius: var(--radius);
                padding: 0.9rem;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
        }
        @media print {
            .site-header, .breadcrumb, .sidebar, .search-box, .user-feedback, .site-footer {
                display: none;
            }
            article {
                grid-template-columns: 1fr;
            }
            .content-area {
                box-shadow: none;
                padding: 0;
            }
            a {
                color: #000;
                text-decoration: underline;
            }
        }