* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #2c3e50;
            background-color: #f8f9fa;
            max-width: 120rem;
            margin: 0 auto;
            padding: 0 1rem;
        }
        a { color: #2980b9; text-decoration: none; transition: color 0.3s; }
        a:hover { color: #e74c3c; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { padding-left: 2rem; margin: 1rem 0; }
        li { margin: 0.5rem 0; }
        h1 { font-size: clamp(2.5rem, 5vw, 3.8rem); color: #1a5276; margin: 1.5rem 0; border-bottom: 4px solid #f1c40f; padding-bottom: 0.5rem; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); color: #2874a6; margin: 2.5rem 0 1rem; border-left: 5px solid #3498db; padding-left: 0.8rem; }
        h3 { font-size: clamp(1.4rem, 3vw, 1.8rem); color: #3498db; margin: 2rem 0 0.8rem; }
        h4 { font-size: 1.3rem; color: #5dade2; margin: 1.5rem 0 0.5rem; }
        p { margin: 1.2rem 0; text-align: justify; }
        strong { color: #2e4053; }
        em { font-style: italic; color: #7d6608; }
        .container { display: grid; grid-template-columns: 1fr; gap: 2rem; }
        main { grid-column: 1; }
        header { background: linear-gradient(135deg, #1a5276, #2874a6); color: white; padding: 1rem 0; border-radius: 0 0 10px 10px; margin-bottom: 2rem; }
        .header-top { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; padding: 0 1rem; }
        .logo a { font-size: 2.2rem; font-weight: 800; color: #f1c40f; text-shadow: 2px 2px 0 #1a5276; }
        .logo a:hover { color: white; }
        .search-form { display: flex; margin: 1rem 0; }
        .search-form input { flex-grow: 1; padding: 0.8rem; border: none; border-radius: 5px 0 0 5px; }
        .search-form button { background: #f1c40f; color: #1a5276; border: none; padding: 0 1.2rem; border-radius: 0 5px 5px 0; cursor: pointer; font-weight: bold; }
        .search-form button:hover { background: #e74c3c; color: white; }
        nav { background-color: #2c3e50; border-radius: 5px; margin-top: 1rem; }
        .nav-desktop { display: none; }
        .nav-desktop ul { display: flex; list-style: none; justify-content: space-around; flex-wrap: wrap; }
        .nav-desktop a { color: #ecf0f1; padding: 1rem 1.5rem; display: block; font-weight: 600; }
        .nav-desktop a:hover { background-color: #3498db; color: white; }
        .hamburger { display: block; background: none; border: none; color: white; font-size: 1.8rem; padding: 0.5rem 1rem; cursor: pointer; margin-left: auto; }
        .nav-mobile { max-height: 0; overflow: hidden; transition: max-height 0.5s ease; list-style: none; background-color: #34495e; }
        .nav-mobile.active { max-height: 500px; }
        .nav-mobile li { border-bottom: 1px solid #4a6572; }
        .nav-mobile a { color: #ecf0f1; padding: 1rem; display: block; }
        .breadcrumb { padding: 1rem; background-color: #e8f4fc; border-radius: 5px; margin: 1rem 0; font-size: 0.9rem; }
        .breadcrumb a { color: #3498db; }
        .breadcrumb span { color: #7f8c8d; }
        article { background: white; padding: 2rem; border-radius: 10px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); margin-bottom: 2rem; }
        .article-meta { color: #7f8c8d; font-size: 0.95rem; margin-bottom: 1.5rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }
        .featured-img { width: 100%; max-height: 400px; object-fit: cover; border-radius: 8px; margin: 2rem auto; border: 5px solid #f1c40f; }
        .highlight-box { background: linear-gradient(to right, #e8f4fc, #fef9e7); border-left: 6px solid #3498db; padding: 1.5rem; margin: 2rem 0; border-radius: 0 8px 8px 0; }
        .link-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1rem; margin: 2rem 0; }
        .link-card { background: #f8f9fa; padding: 1rem; border-radius: 5px; border: 1px solid #ddd; }
        .link-card:hover { border-color: #3498db; background: #e3f2fd; }
        .interaction-section { background: #f1f8ff; padding: 2rem; border-radius: 10px; margin: 3rem 0; border: 2px dashed #3498db; }
        .rating { display: flex; align-items: center; gap: 1rem; margin: 1rem 0; }
        .stars { color: #f1c40f; font-size: 1.5rem; cursor: pointer; }
        .comment-form textarea, .comment-form input { width: 100%; padding: 0.8rem; margin: 0.5rem 0 1rem; border: 1px solid #bdc3c7; border-radius: 5px; }
        .comment-form button, .rating-form button { background: #2ecc71; color: white; border: none; padding: 0.8rem 2rem; border-radius: 5px; cursor: pointer; font-weight: bold; }
        .comment-form button:hover, .rating-form button:hover { background: #27ae60; }
        friend-link { display: block; background: #2c3e50; padding: 2rem; border-radius: 10px; margin: 2rem 0; }
        friend-link h3 { color: #f1c40f; border-left-color: #f1c40f; }
        friend-link ul { list-style: none; display: flex; flex-wrap: wrap; gap: 1.5rem; justify-content: center; }
        friend-link li { background: #34495e; padding: 0.8rem 1.5rem; border-radius: 30px; }
        friend-link a { color: #ecf0f1; }
        friend-link a:hover { color: #f1c40f; }
        footer { text-align: center; padding: 2rem; background: #1a5276; color: #ecf0f1; border-radius: 10px 10px 0 0; margin-top: 3rem; }
        .copyright { margin-top: 1rem; font-size: 0.9rem; color: #bdc3c7; }
        @media (min-width: 768px) {
            .container { grid-template-columns: 3fr 1fr; }
            .nav-desktop { display: block; }
            .hamburger { display: none; }
            .nav-mobile { display: none; }
            .header-top { flex-wrap: nowrap; }
            .search-form { margin: 0; width: 300px; }
        }
        @media (max-width: 767px) {
            article { padding: 1.5rem; }
            h1 { font-size: 2rem; }
            .link-list { grid-template-columns: 1fr; }
        }