* { 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: #2c3e50;
            background-color: #f8f9fa;
            max-width: 120rem;
            margin: 0 auto;
            padding: 0 1rem;
        }
        img { max-width: 100%; height: auto; display: block; }
        h1, h2, h3, h4 { font-family: Georgia, 'Times New Roman', Times, serif; color: #1a472a; margin-top: 2rem; margin-bottom: 1rem; font-weight: 700; line-height: 1.3; }
        h1 { font-size: clamp(2.5rem, 5vw, 3.8rem); border-bottom: 4px solid #d4af37; padding-bottom: 1rem; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); border-left: 5px solid #27ae60; padding-left: 1rem; margin-top: 3rem;}
        h3 { font-size: clamp(1.5rem, 3vw, 2rem); color: #2e8b57; margin-top: 2.5rem; }
        h4 { font-size: 1.4rem; color: #555; margin-top: 2rem; }
        p { margin-bottom: 1.5rem; font-size: 1.125rem; }
        a { color: #27ae60; text-decoration: none; transition: color 0.3s, background-color 0.3s; }
        a:hover { color: #1a472a; text-decoration: underline; }
        strong { color: #1a472a; font-weight: 700; }
        em { font-style: italic; color: #555; }
        .container { display: grid; grid-template-columns: 1fr; gap: 2rem; }
        .site-header { background: linear-gradient(135deg, #1a472a 0%, #2e8b57 100%); color: white; padding: 1rem 0; border-radius: 0 0 12px 12px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); margin-bottom: 2rem; position: sticky; top: 0; z-index: 1000; }
        .header-container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; }
        .my-logo { font-family: 'Trebuchet MS', sans-serif; font-size: 2.2rem; font-weight: 900; color: #d4af37; text-decoration: none; display: flex; align-items: center; }
        .my-logo i { margin-right: 10px; }
        .my-logo:hover { color: #ffd700; text-decoration: none; }
        .search-form { display: flex; flex-grow: 1; max-width: 500px; margin: 0 2rem; }
        .search-input { flex-grow: 1; padding: 0.8rem 1.2rem; border: none; border-radius: 50px 0 0 50px; font-size: 1rem; }
        .search-button { background-color: #d4af37; color: #1a472a; border: none; padding: 0.8rem 1.5rem; border-radius: 0 50px 50px 0; cursor: pointer; font-weight: bold; transition: background-color 0.3s; }
        .search-button:hover { background-color: #ffd700; }
        .hamburger { display: none; background: none; border: none; color: white; font-size: 1.8rem; cursor: pointer; padding: 0.5rem; }
        .main-nav ul { display: flex; list-style: none; flex-wrap: wrap; }
        .main-nav li { margin-left: 1.5rem; }
        .main-nav a { color: white; text-decoration: none; font-weight: 600; padding: 0.5rem 0.8rem; border-radius: 4px; transition: background-color 0.3s; }
        .main-nav a:hover, .main-nav a.active { background-color: rgba(255,255,255,0.2); text-decoration: none; }
        .breadcrumb { padding: 1rem 0; font-size: 0.9rem; color: #666; }
        .breadcrumb a { color: #27ae60; }
        .breadcrumb a:hover { color: #1a472a; }
        .breadcrumb span { color: #999; margin: 0 8px; }
        .main-content { background: white; padding: 2.5rem; border-radius: 12px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); margin-bottom: 2rem; }
        .article-meta { color: #7f8c8d; font-size: 0.95rem; margin-bottom: 2rem; padding-bottom: 1rem; border-bottom: 1px solid #ecf0f1; display: flex; justify-content: space-between; flex-wrap: wrap; }
        .last-updated { background: #f1f8e9; padding: 0.5rem 1rem; border-radius: 4px; font-style: italic; }
        .featured-image { margin: 2.5rem auto; border-radius: 8px; overflow: hidden; box-shadow: 0 10px 20px rgba(0,0,0,0.1); }
        .caption { text-align: center; font-style: italic; color: #666; padding: 0.8rem; background: #f9f9f9; font-size: 0.95rem; }
        .highlight-box { background: linear-gradient(to right, #f1f8e9, #e8f5e9); border-left: 5px solid #27ae60; padding: 1.5rem; margin: 2rem 0; border-radius: 0 8px 8px 0; }
        .tip { background-color: #e3f2fd; border-left: 5px solid #2196f3; padding: 1rem; margin: 1.5rem 0; }
        .related-links { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1rem; margin: 2.5rem 0; }
        .related-links a { display: block; background: #f8f9fa; padding: 1rem; border-radius: 6px; border: 1px solid #e9ecef; transition: all 0.3s; }
        .related-links a:hover { background: #27ae60; color: white; text-decoration: none; transform: translateY(-3px); box-shadow: 0 5px 10px rgba(0,0,0,0.1); }
        .user-interaction { background: #f8f9fa; padding: 2rem; border-radius: 8px; margin-top: 3rem; border: 1px solid #dee2e6; }
        .form-group { margin-bottom: 1.5rem; }
        label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: #2c3e50; }
        input[type="text"], input[type="email"], textarea, select { width: 100%; padding: 0.8rem; border: 1px solid #ced4da; border-radius: 4px; font-size: 1rem; }
        textarea { min-height: 150px; resize: vertical; }
        .rating-stars { display: flex; gap: 10px; font-size: 1.8rem; color: #ddd; margin: 1rem 0; }
        .rating-stars i { cursor: pointer; transition: color 0.2s; }
        .rating-stars i:hover, .rating-stars i.active { color: #ffc107; }
        .submit-button { background: linear-gradient(to right, #27ae60, #2e8b57); color: white; border: none; padding: 1rem 2rem; border-radius: 50px; font-size: 1.1rem; font-weight: bold; cursor: pointer; transition: transform 0.3s, box-shadow 0.3s; }
        .submit-button:hover { transform: translateY(-2px); box-shadow: 0 5px 15px rgba(39, 174, 96, 0.4); }
        .site-footer { background: #2c3e50; color: #ecf0f1; padding: 3rem 0 1.5rem; border-radius: 12px 12px 0 0; margin-top: 4rem; }
        .footer-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; }
        .footer-section h4 { color: #d4af37; border-bottom: 2px solid #34495e; padding-bottom: 0.5rem; }
        .footer-links { list-style: none; margin-top: 1rem; }
        .footer-links li { margin-bottom: 0.8rem; }
        .footer-links a { color: #bdc3c7; text-decoration: none; }
        .footer-links a:hover { color: #d4af37; }
        friend-link { display: inline-block; background: #34495e; color: #ecf0f1; padding: 0.5rem 1rem; margin: 0.5rem; border-radius: 4px; font-size: 0.9rem; }
        .copyright { text-align: center; margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid #34495e; color: #95a5a6; font-size: 0.9rem; }
        @media (max-width: 768px) {
            .header-container { flex-direction: column; align-items: stretch; }
            .my-logo { margin-bottom: 1rem; justify-content: center; }
            .search-form { order: 3; margin: 1rem 0 0; max-width: 100%; }
            .hamburger { display: block; position: absolute; top: 1rem; right: 1rem; }
            .main-nav { display: none; width: 100%; margin-top: 1rem; }
            .main-nav.active { display: block; }
            .main-nav ul { flex-direction: column; }
            .main-nav li { margin: 0; border-bottom: 1px solid rgba(255,255,255,0.1); }
            .main-nav a { display: block; padding: 1rem; }
            .main-content { padding: 1.5rem; }
            .article-meta { flex-direction: column; gap: 1rem; }
            .footer-container { grid-template-columns: 1fr; }
        }