* { 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: #333;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            min-height: 100vh;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: #0d6efd; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #dc3545; }
        ul, ol { padding-left: 1.5rem; margin-bottom: 1.5rem; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        @media (min-width: 992px) {
            .main-grid { grid-template-columns: 3fr 1fr; }
        }
        .site-header {
            background: linear-gradient(to right, #0a2e6b, #1e4a8a);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-family: 'Impact', 'Arial Black', sans-serif;
            font-size: 2.2rem;
            font-weight: bold;
            letter-spacing: 1px;
            color: #ffc107;
            text-shadow: 2px 2px 0 #dc3545;
            text-decoration: none;
        }
        .my-logo:hover { color: #fff; text-shadow: 2px 2px 0 #ffc107; }
        .nav-primary { display: flex; align-items: center; }
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .nav-menu a {
            color: #e9ecef;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
            display: block;
        }
        .nav-menu a:hover { background: rgba(255, 255, 255, 0.15); color: #ffc107; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #1e4a8a;
                padding: 1rem;
                box-shadow: 0 5px 10px rgba(0,0,0,0.2);
            }
            .nav-menu.active { display: flex; }
        }
        .breadcrumb {
            padding: 1rem 0;
            background: #e9ecef;
            font-size: 0.9rem;
            border-bottom: 1px solid #ced4da;
        }
        .breadcrumb ul {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding-left: 0;
            margin: 0;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin: 0 10px;
            color: #6c757d;
        }
        .breadcrumb a { color: #495057; }
        .breadcrumb a:hover { color: #0d6efd; }
        .search-section {
            background: #fff;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin-bottom: 2rem;
            text-align: center;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid #ced4da;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.3s;
        }
        .search-input:focus { border-color: #0d6efd; }
        .search-btn {
            background: #0d6efd;
            color: white;
            border: none;
            padding: 0 1.8rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-size: 1rem;
            transition: background 0.3s;
        }
        .search-btn:hover { background: #0b5ed7; }
        .content-area {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
            margin-bottom: 2rem;
        }
        .article-header { margin-bottom: 2.5rem; border-bottom: 3px solid #0d6efd; padding-bottom: 1.5rem; }
        .article-header h1 {
            font-size: 2.8rem;
            color: #0a2e6b;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            color: #6c757d;
            font-size: 0.95rem;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .article-meta span { display: inline-flex; align-items: center; gap: 0.4rem; }
        h2, h3, h4 {
            color: #1e4a8a;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h2 { font-size: 2.2rem; border-left: 5px solid #ffc107; padding-left: 1rem; }
        h3 { font-size: 1.8rem; }
        h4 { font-size: 1.5rem; color: #495057; }
        p, li { margin-bottom: 1.5rem; font-size: 1.1rem; color: #2d3748; }
        .lead { font-size: 1.3rem; font-weight: 500; color: #0a2e6b; margin-bottom: 2rem; }
        .highlight { background: #fff3cd; padding: 1.5rem; border-left: 4px solid #ffc107; border-radius: 4px; margin: 2rem 0; }
        .feature-img {
            margin: 2.5rem auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            max-width: 800px;
        }
        .feature-img img { width: 100%; transition: transform 0.5s ease; }
        .feature-img:hover img { transform: scale(1.03); }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #6c757d;
            padding: 0.8rem;
            background: #f8f9fa;
            font-size: 0.95rem;
        }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2.5rem 0;
            padding: 1.5rem;
            background: #f8f9fa;
            border-radius: 10px;
            border: 1px solid #dee2e6;
        }
        .stat-item { text-align: center; }
        .stat-number {
            font-size: 2.5rem;
            font-weight: bold;
            color: #0d6efd;
            display: block;
        }
        .stat-label { font-size: 1rem; color: #6c757d; }
        .interactive-section {
            background: #fff;
            border-radius: 12px;
            padding: 2rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin: 3rem 0;
            border-top: 5px solid #28a745;
        }
        .interactive-section h3 { margin-top: 0; }
        .form-group { margin-bottom: 1.5rem; }
        .form-label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: #495057; }
        .form-control {
            width: 100%;
            padding: 0.9rem;
            border: 1px solid #ced4da;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .form-control:focus { border-color: #0d6efd; outline: none; box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25); }
        .rating-stars { display: flex; gap: 0.5rem; margin-bottom: 1rem; }
        .rating-stars input { display: none; }
        .rating-stars label {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .rating-stars input:checked ~ label,
        .rating-stars label:hover,
        .rating-stars label:hover ~ label { color: #ffc107; }
        .btn {
            display: inline-block;
            padding: 0.9rem 2rem;
            background: #28a745;
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .btn:hover { background: #218838; transform: translateY(-2px); box-shadow: 0 5px 15px rgba(0,0,0,0.1); }
        .btn-block { width: 100%; }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .sidebar-widget { margin-bottom: 2.5rem; }
        .sidebar-widget h3 {
            font-size: 1.5rem;
            padding-bottom: 0.8rem;
            border-bottom: 2px solid #ffc107;
            margin-bottom: 1.2rem;
        }
        .related-links { list-style: none; padding-left: 0; }
        .related-links li { margin-bottom: 0.8rem; }
        .related-links a {
            display: block;
            padding: 0.8rem;
            background: #f8f9fa;
            border-radius: 6px;
            transition: all 0.3s;
        }
        .related-links a:hover { background: #e9ecef; transform: translateX(5px); }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        .tag { background: #e9ecef; padding: 0.5rem 1rem; border-radius: 50px; font-size: 0.9rem; }
        .tag:hover { background: #0d6efd; color: white; }
        .site-footer {
            background: #212529;
            color: #adb5bd;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-widget h4 {
            color: #ffc107;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
        }
        .footer-links { list-style: none; padding-left: 0; }
        .footer-links li { margin-bottom: 0.8rem; }
        .footer-links a { color: #adb5bd; }
        .footer-links a:hover { color: #ffc107; }
        friend-link {
            display: block;
            padding: 1rem;
            background: #343a40;
            border-radius: 8px;
            margin-bottom: 1rem;
            text-align: center;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #495057;
            font-size: 0.9rem;
            color: #6c757d;
        }