* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #0056b3; 
            --secondary: #ffcc00; 
            --dark: #121212;
            --light: #f8f9fa;
            --gray: #6c757d;
            --transition: all 0.3s ease;
            --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            --border-radius: 8px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: var(--light);
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            background: #003d82;
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        .section-title {
            font-size: 2.5rem;
            margin-bottom: 2rem;
            color: var(--dark);
            position: relative;
            padding-bottom: 10px;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background: var(--secondary);
        }
        .site-header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo {
            font-size: 2rem;
            font-weight: 900;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo span {
            color: var(--secondary);
        }
        .main-nav ul {
            display: flex;
            gap: 2rem;
        }
        .main-nav a {
            font-weight: 600;
            padding: 8px 0;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: var(--transition);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--dark);
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 12px 0;
            font-size: 0.9rem;
        }
        .breadcrumb .container {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb i {
            margin: 0 10px;
            color: var(--gray);
            font-size: 0.8rem;
        }
        .hero {
            background: linear-gradient(rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.8)), url('https://images.unsplash.com/photo-1556056504-5c7696c4c28d?ixlib=rb-4.0.3&auto=format&fit=crop&w=1600&q=80') no-repeat center center/cover;
            color: white;
            text-align: center;
            padding: 80px 20px;
            margin-bottom: 40px;
        }
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 30px;
            color: #ddd;
        }
        .search-box {
            max-width: 600px;
            margin: 40px auto;
            background: white;
            padding: 20px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .search-box h3 {
            margin-bottom: 15px;
            color: var(--dark);
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 15px;
            border: 2px solid #ddd;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
            outline: none;
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            font-size: 1rem;
        }
        .search-form button:hover {
            background: #003d82;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .article-content p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }
        .article-content h2 {
            font-size: 2rem;
            margin: 2.5rem 0 1.5rem;
            color: var(--primary);
        }
        .article-content h3 {
            font-size: 1.6rem;
            margin: 2rem 0 1rem;
            color: var(--dark);
        }
        .article-content ul, .article-content ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        .article-content li {
            margin-bottom: 0.8rem;
        }
        .highlight {
            background-color: #fff9e6;
            border-left: 5px solid var(--secondary);
            padding: 20px;
            margin: 25px 0;
            font-style: italic;
        }
        .feature-img {
            margin: 30px 0;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .feature-img figcaption {
            text-align: center;
            padding: 10px;
            font-size: 0.9rem;
            color: var(--gray);
            background: #f8f9fa;
        }
        .inline-link {
            color: var(--primary);
            font-weight: 600;
            border-bottom: 1px dotted var(--primary);
        }
        .inline-link:hover {
            color: #003d82;
            border-bottom-style: solid;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin-bottom: 30px;
        }
        .sidebar-widget h4 {
            font-size: 1.4rem;
            margin-bottom: 20px;
            color: var(--primary);
            padding-bottom: 10px;
            border-bottom: 2px solid var(--secondary);
        }
        .related-links li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dashed #eee;
        }
        .related-links a:hover {
            color: var(--primary);
            padding-left: 5px;
        }
        .user-interaction {
            background: white;
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin-top: 40px;
        }
        .interaction-title {
            font-size: 1.8rem;
            margin-bottom: 25px;
            color: var(--dark);
        }
        .rating-box {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 30px;
            flex-wrap: wrap;
        }
        .stars {
            display: flex;
            gap: 5px;
        }
        .stars i {
            color: #ddd;
            cursor: pointer;
            font-size: 1.5rem;
            transition: var(--transition);
        }
        .stars i:hover,
        .stars i.active {
            color: var(--secondary);
        }
        .comment-form,
        .rating-form {
            display: grid;
            gap: 20px;
            margin-top: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 8px;
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea {
            padding: 15px;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 1rem;
            font-family: inherit;
        }
        .form-group textarea {
            min-height: 150px;
            resize: vertical;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
        }
        .site-footer {
            background-color: var(--dark);
            color: #ccc;
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            font-size: 1.3rem;
            color: white;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background: var(--secondary);
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a:hover {
            color: var(--secondary);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            font-style: italic;
            margin-top: 10px;
            color: #aaa;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #999;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                background: white;
                padding: 20px;
                box-shadow: var(--shadow);
                transition: var(--transition);
            }
            .main-nav.active {
                left: 0;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li {
                border-bottom: 1px solid #eee;
            }
            .main-nav a {
                display: block;
                padding: 15px;
            }
            .hero h1 {
                font-size: 2.5rem;
            }
            .hero p {
                font-size: 1.1rem;
            }
            .section-title {
                font-size: 2rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input,
            .search-form button {
                border-radius: var(--border-radius);
                width: 100%;
            }
            .search-form input {
                margin-bottom: 10px;
            }
        }