* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
        }
        a { color: #1a5fb4; text-decoration: none; transition: color 0.3s; }
        a:hover { color: #e95420; }
        img { max-width: 100%; height: auto; display: block; }
        .container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 20px; }
        .site-header { background: #1a365d; color: white; padding: 1.2rem 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; }
        .logo { font-size: 1.8rem; font-weight: 800; letter-spacing: 1px; }
        .logo a { color: white; }
        .logo span { color: #f6b026; }
        .nav-desktop { display: flex; gap: 2rem; }
        .nav-desktop a { color: #e2e8f0; font-weight: 500; padding: 0.5rem 0; position: relative; }
        .nav-desktop a:hover { color: #f6b026; }
        .nav-desktop a:after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: #f6b026; transition: width 0.3s; }
        .nav-desktop a:hover:after { width: 100%; }
        .hamburger { display: none; background: none; border: none; color: white; font-size: 1.8rem; cursor: pointer; }
        .nav-mobile { display: none; flex-direction: column; background: #2d3748; position: absolute; top: 100%; left: 0; width: 100%; padding: 1rem; box-shadow: 0 5px 10px rgba(0,0,0,0.2); }
        .nav-mobile.active { display: flex; }
        .nav-mobile a { color: #e2e8f0; padding: 0.8rem 1rem; border-bottom: 1px solid #4a5568; }
        .nav-mobile a:last-child { border-bottom: none; }
        .breadcrumb { background: #edf2f7; padding: 0.8rem 0; font-size: 0.9rem; margin-bottom: 2rem; }
        .breadcrumb a { color: #4a5568; }
        .breadcrumb span { color: #718096; }
        .main-content { display: grid; grid-template-columns: 1fr 300px; gap: 3rem; margin: 2rem 0; }
        @media (max-width: 992px) { .main-content { grid-template-columns: 1fr; } }
        article { background: white; border-radius: 12px; padding: 2.5rem; box-shadow: 0 6px 20px rgba(0, 0, 0, 0.07); }
        article h1 { font-size: 2.8rem; color: #1a365d; margin-bottom: 1.5rem; line-height: 1.2; }
        article h2 { font-size: 2rem; color: #2d3748; margin: 2.5rem 0 1.2rem; padding-bottom: 0.5rem; border-bottom: 2px solid #e2e8f0; }
        article h3 { font-size: 1.5rem; color: #4a5568; margin: 2rem 0 1rem; }
        article p, article li { margin-bottom: 1.5rem; color: #2d3748; font-size: 1.1rem; }
        article ul, article ol { padding-left: 2rem; margin-bottom: 1.5rem; }
        article strong { color: #1a365d; font-weight: 700; }
        article em { background: linear-gradient(transparent 60%, #fff176 60%); font-style: normal; }
        .highlight-box { background: linear-gradient(90deg, #ebf8ff, #e6fffa); border-left: 5px solid #38b2ac; padding: 1.5rem; border-radius: 0 8px 8px 0; margin: 2rem 0; }
        .feature-img { width: 100%; border-radius: 10px; margin: 2.5rem 0; box-shadow: 0 8px 25px rgba(0,0,0,0.1); }
        .caption { text-align: center; font-style: italic; color: #718096; margin-top: 0.5rem; font-size: 0.95rem; }
        .interactive-section { background: #f8fafc; border-radius: 12px; padding: 2rem; margin: 3rem 0; border: 1px solid #e2e8f0; }
        .interactive-section h3 { color: #2d3748; margin-top: 0; }
        .search-form, .comment-form, .rating-form { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 1.5rem; }
        .search-form input, .comment-form input, .comment-form textarea, .rating-form select {
            flex: 1;
            min-width: 200px;
            padding: 0.9rem 1.2rem;
            border: 2px solid #cbd5e0;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .comment-form textarea { min-height: 150px; width: 100%; }
        .search-form input:focus, .comment-form input:focus, .comment-form textarea:focus, .rating-form select:focus { outline: none; border-color: #4299e1; }
        button, .btn {
            background: linear-gradient(90deg, #2b6cb0, #1a365d);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            font-size: 1rem;
        }
        button:hover, .btn:hover { background: linear-gradient(90deg, #1a365d, #2b6cb0); transform: translateY(-2px); box-shadow: 0 5px 15px rgba(0,0,0,0.1); }
        .stars { display: flex; gap: 0.5rem; margin: 1rem 0; }
        .star { font-size: 1.8rem; color: #e2e8f0; cursor: pointer; transition: color 0.2s; }
        .star.active, .star:hover { color: #f6b026; }
        aside { background: white; border-radius: 12px; padding: 2rem; box-shadow: 0 6px 20px rgba(0,0,0,0.07); height: fit-content; }
        aside h3 { color: #1a365d; margin-bottom: 1.5rem; font-size: 1.5rem; }
        .related-links { list-style: none; padding: 0; }
        .related-links li { margin-bottom: 1rem; padding-bottom: 1rem; border-bottom: 1px solid #e2e8f0; }
        .related-links li:last-child { border-bottom: none; }
        .related-links a { display: flex; align-items: center; gap: 0.8rem; font-weight: 500; }
        .related-links i { color: #4299e1; }
        footer { background: #1a365d; color: #e2e8f0; padding: 3rem 0 1.5rem; margin-top: 4rem; }
        .footer-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 3rem; margin-bottom: 2.5rem; }
        .footer-section h4 { color: white; font-size: 1.3rem; margin-bottom: 1.5rem; position: relative; padding-bottom: 0.5rem; }
        .footer-section h4:after { content: ''; position: absolute; bottom: 0; left: 0; width: 40px; height: 3px; background: #f6b026; }
        friend-link { display: block; margin-bottom: 0.8rem; }
        friend-link a { color: #a0aec0; }
        friend-link a:hover { color: #f6b026; }
        .copyright { text-align: center; padding-top: 1.5rem; border-top: 1px solid #2d3748; color: #a0aec0; font-size: 0.9rem; }
        .copyright a { color: #f6b026; }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-desktop { display: none; }
            article { padding: 1.8rem; }
            article h1 { font-size: 2.2rem; }
            .header-content, .footer-content { flex-direction: column; text-align: center; }
        }