* { 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: 1400px;
            margin: 0 auto;
            padding: 0 15px;
        }
        h1, h2, h3, h4 { font-weight: 700; line-height: 1.3; margin-bottom: 1rem; color: #1a365d; }
        h1 { font-size: 2.8rem; margin-top: 1.5rem; border-bottom: 4px solid #e63946; padding-bottom: 0.5rem; }
        h2 { font-size: 2.2rem; margin-top: 2.5rem; padding-left: 10px; border-left: 5px solid #4361ee; }
        h3 { font-size: 1.8rem; margin-top: 2rem; color: #457b9d; }
        h4 { font-size: 1.4rem; margin-top: 1.5rem; color: #6d6875; }
        p { margin-bottom: 1.5rem; text-align: justify; }
        a { color: #4361ee; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #e63946; text-decoration: underline; }
        strong { color: #1a365d; }
        em { font-style: italic; color: #555; }
        .lead { font-size: 1.25rem; color: #555; font-weight: 300; }
        .last-updated { font-size: 0.9rem; color: #6c757d; text-align: right; margin-bottom: 2rem; padding-bottom: 10px; border-bottom: 1px dashed #ddd; }
        .container { display: grid; grid-template-columns: 1fr; gap: 2rem; }
        header { background: linear-gradient(135deg, #1a365d 0%, #457b9d 100%); color: white; padding: 1.5rem 0; border-radius: 0 0 15px 15px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); margin-bottom: 2rem; }
        .header-content { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; }
        .my-logo a { font-size: 2.5rem; font-weight: 900; color: white; text-decoration: none; display: flex; align-items: center; }
        .my-logo a span:first-child { color: #f4a261; }
        .my-logo a span:last-child { color: #a8dadc; }
        .my-logo a:hover { text-decoration: none; opacity: 0.9; }
        .desktop-nav ul { display: flex; list-style: none; gap: 2rem; }
        .desktop-nav a { color: white; font-weight: 500; padding: 8px 12px; border-radius: 5px; }
        .desktop-nav a:hover { background-color: rgba(255,255,255,0.2); text-decoration: none; }
        .mobile-menu-btn { display: none; font-size: 1.8rem; background: none; border: none; color: white; cursor: pointer; }
        .mobile-nav { display: none; background-color: #1a365d; padding: 1rem; border-radius: 10px; margin-top: 1rem; }
        .mobile-nav.active { display: block; }
        .mobile-nav ul { list-style: none; }
        .mobile-nav li { margin-bottom: 0.8rem; }
        .mobile-nav a { color: white; display: block; padding: 10px; border-radius: 5px; }
        .mobile-nav a:hover { background-color: rgba(255,255,255,0.1); }
        .breadcrumb { padding: 1rem 0; font-size: 0.9rem; color: #6c757d; }
        .breadcrumb a { color: #4361ee; }
        .breadcrumb a:hover { text-decoration: underline; }
        main { background: white; padding: 2.5rem; border-radius: 15px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
        article section { margin-bottom: 3rem; }
        .content-img { width: 100%; max-width: 800px; height: auto; border-radius: 10px; margin: 2rem auto; display: block; box-shadow: 0 5px 15px rgba(0,0,0,0.1); border: 1px solid #eee; }
        .highlight-box { background: linear-gradient(to right, #f8f9fa, #e9ecef); padding: 1.5rem; border-left: 5px solid #e63946; margin: 2rem 0; border-radius: 0 10px 10px 0; }
        .search-section { background: #e9ecef; padding: 2rem; border-radius: 10px; margin: 3rem 0; text-align: center; }
        .search-form { display: flex; max-width: 600px; margin: 1rem auto; }
        .search-form input { flex: 1; padding: 15px; border: 2px solid #4361ee; border-radius: 8px 0 0 8px; font-size: 1rem; }
        .search-form button { background: #4361ee; color: white; border: none; padding: 0 25px; border-radius: 0 8px 8px 0; cursor: pointer; font-size: 1.2rem; transition: background 0.3s; }
        .search-form button:hover { background: #3a56d4; }
        .user-interaction { background: #f1faee; padding: 2rem; border-radius: 10px; margin: 3rem 0; border: 1px solid #a8dadc; }
        .interaction-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
        .comment-box, .rating-box { background: white; padding: 1.5rem; border-radius: 10px; box-shadow: 0 3px 10px rgba(0,0,0,0.05); }
        .comment-form textarea, .comment-form input, .rating-form select { width: 100%; padding: 12px; margin-bottom: 1rem; border: 1px solid #ced4da; border-radius: 8px; font-size: 1rem; }
        .comment-form button, .rating-form button { background: #457b9d; color: white; border: none; padding: 12px 30px; border-radius: 8px; cursor: pointer; font-size: 1rem; transition: background 0.3s; }
        .comment-form button:hover, .rating-form button:hover { background: #1d3557; }
        .star-rating { font-size: 1.5rem; color: #ffc107; margin: 10px 0; }
        .related-links { background: #f8f9fa; padding: 1.5rem; border-radius: 10px; margin: 2rem 0; }
        .related-links ul { list-style: none; display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1rem; }
        .related-links li { padding: 10px; border-left: 3px solid #4361ee; background: white; border-radius: 0 5px 5px 0; }
        footer { background: #1a365d; color: #a8dadc; padding: 3rem 0 1.5rem; margin-top: 3rem; border-radius: 15px 15px 0 0; }
        .footer-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; margin-bottom: 2rem; }
        .footer-section h4 { color: #f4a261; border-bottom: 2px solid #457b9d; padding-bottom: 0.5rem; margin-bottom: 1rem; }
        .footer-links a { color: #a8dadc; display: block; margin-bottom: 0.5rem; }
        .footer-links a:hover { color: white; padding-left: 5px; }
        friend-link { display: block; background: #457b9d; color: white; padding: 15px; border-radius: 8px; margin: 1rem 0; text-align: center; font-weight: bold; }
        friend-link a { color: white; }
        friend-link:hover { background: #1d3557; }
        .copyright { text-align: center; padding-top: 1.5rem; border-top: 1px solid #457b9d; color: #a8dadc; font-size: 0.9rem; }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            .header-content { flex-direction: column; align-items: flex-start; }
            .desktop-nav { display: none; }
            .mobile-menu-btn { display: block; position: absolute; top: 1.5rem; right: 15px; }
            .my-logo a { margin-bottom: 1rem; }
        }
        @media (max-width: 768px) {
            main { padding: 1.5rem; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.8rem; }
            .search-form { flex-direction: column; }
            .search-form input { border-radius: 8px; margin-bottom: 10px; }
            .search-form button { border-radius: 8px; padding: 15px; }
            .interaction-grid { grid-template-columns: 1fr; }
        }