* { 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, #f5f7fa 0%, #e4edf5 100%);
            max-width: 100%;
            overflow-x: hidden;
        }
        a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style-position: inside; margin-left: 1.2rem; }
        .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        h1 { font-size: 2.8rem; color: #1a365d; margin-bottom: 1.5rem; line-height: 1.2; }
        h2 { font-size: 2.2rem; color: #2d3748; margin: 2.5rem 0 1.2rem; padding-bottom: 0.5rem; border-bottom: 2px solid #4299e1; }
        h3 { font-size: 1.8rem; color: #4a5568; margin: 2rem 0 1rem; }
        h4 { font-size: 1.4rem; color: #718096; margin: 1.5rem 0 0.8rem; }
        p { margin-bottom: 1.5rem; font-size: 1.1rem; text-align: justify; }
        .lead { font-size: 1.3rem; color: #2d3748; font-weight: 500; }
        .highlight { background-color: #fff3cd; padding: 2px 6px; border-radius: 3px; }
        .bold { font-weight: 700; color: #1a365d; }
        .italic { font-style: italic; }
        .last-updated { font-size: 0.9rem; color: #718096; text-align: right; margin-bottom: 2rem; }
        .site-header { background-color: #1a365d; color: white; padding: 1rem 0; position: sticky; top: 0; z-index: 1000; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
        .header-content { display: flex; justify-content: space-between; align-items: center; }
        .my-logo { font-family: 'Georgia', serif; font-size: 2.2rem; font-weight: bold; color: #fbbf24; text-shadow: 1px 1px 2px #000; }
        .my-logo:hover { color: #f59e0b; transform: scale(1.02); }
        .nav-desktop { display: flex; gap: 2rem; }
        .nav-desktop a { padding: 0.5rem 1rem; border-radius: 4px; font-weight: 500; }
        .nav-desktop a:hover { background-color: #2d3748; }
        .hamburger-btn { display: none; font-size: 1.8rem; background: none; border: none; color: white; cursor: pointer; }
        .nav-mobile { display: none; position: absolute; top: 100%; left: 0; width: 100%; background-color: #2d3748; flex-direction: column; padding: 1rem; box-shadow: 0 5px 15px rgba(0,0,0,0.2); }
        .nav-mobile.active { display: flex; }
        .nav-mobile a { padding: 0.8rem 0; border-bottom: 1px solid #4a5568; }
        .nav-mobile a:last-child { border-bottom: none; }
        .breadcrumb { padding: 1rem 0; font-size: 0.9rem; color: #718096; background-color: #f7fafc; }
        .breadcrumb a:hover { color: #4299e1; }
        .main-content { display: grid; grid-template-columns: 1fr 300px; gap: 3rem; padding: 2rem 0; }
        .article-content { background-color: white; padding: 2.5rem; border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); }
        .sidebar { background-color: white; padding: 1.5rem; border-radius: 12px; box-shadow: 0 10px 25px rgba(0,0,0,0.06); align-self: start; position: sticky; top: 120px; }
        .feature-box { background: linear-gradient(145deg, #edf2f7, #e2e8f0); border-left: 5px solid #4299e1; padding: 1.5rem; margin: 2rem 0; border-radius: 0 8px 8px 0; }
        .search-form, .comment-form, .rating-form { margin-bottom: 2.5rem; }
        .form-group { margin-bottom: 1.2rem; }
        .form-group label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: #4a5568; }
        .form-control { width: 100%; padding: 0.8rem 1rem; border: 1px solid #cbd5e0; border-radius: 6px; font-size: 1rem; transition: border 0.3s; }
        .form-control:focus { outline: none; border-color: #4299e1; box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.2); }
        .btn { background-color: #4299e1; color: white; padding: 0.8rem 1.8rem; border: none; border-radius: 6px; font-size: 1rem; font-weight: 600; cursor: pointer; transition: all 0.3s; }
        .btn:hover { background-color: #3182ce; transform: translateY(-2px); box-shadow: 0 5px 15px rgba(66, 153, 225, 0.3); }
        .stars { display: flex; gap: 0.5rem; margin-top: 0.5rem; }
        .star { font-size: 1.5rem; color: #e2e8f0; cursor: pointer; transition: color 0.2s; }
        .star:hover, .star.active { color: #fbbf24; }
        .related-links { margin-top: 2rem; }
        .link-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1rem; margin-top: 1rem; }
        .link-item { background-color: #f8fafc; padding: 1rem; border-radius: 8px; border: 1px solid #e2e8f0; }
        .link-item:hover { background-color: #edf2f7; border-color: #4299e1; transform: translateX(5px); }
        .article-img { margin: 2.5rem auto; border-radius: 10px; overflow: hidden; box-shadow: 0 15px 35px rgba(0,0,0,0.1); max-width: 800px; }
        .article-img img { width: 100%; height: auto; transition: transform 0.5s ease; }
        .article-img:hover img { transform: scale(1.03); }
        .img-caption { text-align: center; font-style: italic; color: #718096; padding-top: 0.5rem; font-size: 0.95rem; }
        .site-footer { background-color: #1a365d; color: #cbd5e0; padding: 3rem 0 1.5rem; margin-top: 4rem; }
        .footer-content { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 2rem; }
        .footer-section { flex: 1; min-width: 250px; }
        .footer-section h4 { color: #fbbf24; border-bottom: 1px solid #4a5568; padding-bottom: 0.5rem; }
        friend-link { display: block; margin: 0.8rem 0; color: #a0aec0; }
        friend-link:hover { color: #fbbf24; }
        .copyright { text-align: center; padding-top: 2rem; margin-top: 2rem; border-top: 1px solid #2d3748; font-size: 0.9rem; color: #a0aec0; }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
            .sidebar { position: static; }
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .hamburger-btn { display: block; }
            .header-content { flex-wrap: wrap; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            h3 { font-size: 1.5rem; }
            .article-content { padding: 1.5rem; }
            .link-list { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            .container { padding: 0 15px; }
            .btn { width: 100%; }
        }