* { 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-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a { color: #0d6efd; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #dc3545; }
        img { max-width: 100%; height: auto; display: block; }
        .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        .site-header {
            background: linear-gradient(135deg, #0a2e5c 0%, #1a4b8c 100%);
            color: white;
            padding: 1.5rem 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;
        }
        .my-logo {
            font-family: 'Impact', 'Arial Black', sans-serif;
            font-size: 2.8rem;
            font-weight: bold;
            letter-spacing: 2px;
            color: #fff;
            text-shadow: 3px 3px 0 #dc3545;
        }
        .my-logo a { color: inherit; }
        .my-logo span { color: #ffc107; }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
        }
        .main-nav a:hover, .main-nav a.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: #ffc107;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 1rem;
            margin: 1rem 0;
            border-radius: 5px;
        }
        .breadcrumb ul {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: #6c757d;
        }
        .content-area {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0;
        }
        @media (max-width: 992px) {
            .content-area { grid-template-columns: 1fr; }
        }
        main article {
            background: white;
            padding: 2.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        h1, h2, h3, h4 {
            color: #0a2e5c;
            margin-top: 2rem;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        h1 { font-size: 2.8rem; border-bottom: 3px solid #ffc107; padding-bottom: 0.5rem; }
        h2 { font-size: 2.2rem; color: #1a4b8c; }
        h3 { font-size: 1.8rem; }
        h4 { font-size: 1.4rem; color: #495057; }
        p { margin-bottom: 1.5rem; text-align: justify; }
        .lead { font-size: 1.25rem; font-weight: 300; color: #555; }
        .highlight { background-color: #fff3cd; padding: 1rem; border-left: 4px solid #ffc107; margin: 1.5rem 0; }
        .term { font-weight: bold; color: #0a2e5c; }
        .emoji { font-size: 1.2em; margin-right: 0.3rem; }
        .article-img {
            margin: 2rem auto;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            max-width: 800px;
        }
        .article-img img { transition: transform 0.5s ease; }
        .article-img:hover img { transform: scale(1.03); }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 0.8rem;
            background: #f8f9fa;
            border-top: 1px solid #dee2e6;
        }
        aside.sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .widget {
            margin-bottom: 2rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid #dee2e6;
        }
        .widget:last-child { border-bottom: none; }
        .widget h3 { font-size: 1.4rem; margin-top: 0; }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .form-group { display: flex; flex-direction: column; }
        .form-group label { font-weight: 600; margin-bottom: 0.3rem; }
        input, textarea, select {
            padding: 0.75rem;
            border: 1px solid #ced4da;
            border-radius: 5px;
            font-size: 1rem;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #86b7fe;
            box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
        }
        button, .btn {
            background: #0d6efd;
            color: white;
            border: none;
            padding: 0.75rem 1.5rem;
            border-radius: 5px;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s ease;
            text-align: center;
        }
        button:hover, .btn:hover { background: #0b5ed7; }
        .btn-secondary { background: #6c757d; }
        .btn-secondary:hover { background: #5c636a; }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
        }
        .star-rating input { display: none; }
        .star-rating label {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label { color: #ffc107; }
        .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-links h4 { color: #f8f9fa; }
        .footer-links ul { list-style: none; }
        .footer-links li { margin-bottom: 0.5rem; }
        .footer-links a { color: #adb5bd; }
        .footer-links a:hover { color: #fff; }
        friend-link {
            display: block;
            background: #343a40;
            padding: 1rem;
            border-radius: 5px;
            margin: 0.5rem 0;
        }
        friend-link a { color: #ffc107; font-weight: bold; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #495057;
            font-size: 0.9rem;
            color: #6c757d;
        }
        @media (max-width: 768px) {
            .nav-toggle { display: block; }
            .main-nav { display: none; width: 100%; }
            .main-nav.active {
                display: block;
                position: absolute;
                top: 100%;
                left: 0;
                background: #0a2e5c;
                width: 100%;
                padding: 1rem;
            }
            .main-nav.active ul {
                flex-direction: column;
                gap: 0.5rem;
            }
            .header-content { flex-wrap: wrap; }
            .my-logo { font-size: 2.2rem; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            main article { padding: 1.5rem; }
            .sidebar { position: static; }
        }