* { 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: #f8f9fa;
            background-image: linear-gradient(180deg, #ffffff 0%, #f1f5f9 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { color: #0056b3; text-decoration: none; transition: all 0.3s ease; }
        a:hover { color: #003d82; text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { padding-left: 2rem; margin: 1rem 0; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .bold { font-weight: 700; }
        .emoji { font-size: 1.2em; }
        .last-updated { font-size: 0.9rem; color: #666; font-style: italic; margin-top: 2rem; padding-top: 1rem; border-top: 1px dashed #ccc; }
        header { background: linear-gradient(135deg, #0a2e5c 0%, #1a4b8c 100%); color: white; padding: 1rem 0; box-shadow: 0 4px 12px rgba(0,0,0,0.1); position: sticky; top: 0; z-index: 1000; }
        .header-top { display: flex; justify-content: space-between; align-items: center; }
        .my-logo { font-family: 'Arial Black', Impact, sans-serif; font-size: 2.2rem; color: #ffffff; text-shadow: 2px 2px 4px rgba(0,0,0,0.5); letter-spacing: 1px; }
        .my-logo a { color: inherit; text-decoration: none; }
        .my-logo span { color: #4CAF50; }
        .search-form { display: flex; }
        .search-form input { padding: 10px 15px; border: none; border-radius: 50px 0 0 50px; width: 250px; font-size: 1rem; }
        .search-form button { background: #4CAF50; color: white; border: none; border-radius: 0 50px 50px 0; padding: 10px 20px; cursor: pointer; font-size: 1rem; transition: background 0.3s; }
        .search-form button:hover { background: #3d8b40; }
        nav { background: #1a3a6e; margin-top: 1rem; border-radius: 8px; }
        .nav-container { position: relative; }
        .nav-links { display: flex; list-style: none; justify-content: center; flex-wrap: wrap; }
        .nav-links li { position: relative; }
        .nav-links a { color: #e0e7ff; display: block; padding: 15px 25px; text-decoration: none; font-weight: 500; border-radius: 5px; margin: 2px; }
        .nav-links a:hover, .nav-links a.active { background: rgba(255,255,255,0.15); color: white; }
        .hamburger { display: none; font-size: 1.8rem; background: none; border: none; color: white; cursor: pointer; padding: 10px; }
        .breadcrumb { padding: 15px 0; font-size: 0.9rem; color: #6c757d; }
        .breadcrumb a { color: #4a6fa5; }
        .breadcrumb a:hover { text-decoration: underline; }
        main { flex: 1; padding: 2rem 0; }
        article { background: white; border-radius: 15px; padding: 2.5rem; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08); margin-bottom: 2rem; }
        h1 { color: #0a2e5c; font-size: 2.8rem; margin-bottom: 1.5rem; line-height: 1.2; border-bottom: 3px solid #4CAF50; padding-bottom: 0.5rem; }
        h2 { color: #1a4b8c; font-size: 2rem; margin: 2.5rem 0 1rem; padding-top: 1rem; border-top: 2px solid #eaeaea; }
        h3 { color: #2c5282; font-size: 1.6rem; margin: 1.8rem 0 0.8rem; }
        h4 { color: #4a5568; font-size: 1.3rem; margin: 1.5rem 0 0.6rem; }
        p { margin-bottom: 1.2rem; text-align: justify; font-size: 1.1rem; }
        .lead { font-size: 1.3rem; color: #2d3748; font-weight: 500; line-height: 1.5; background: #f0f9ff; padding: 1.5rem; border-left: 5px solid #0a2e5c; border-radius: 0 8px 8px 0; margin: 2rem 0; }
        .highlight-box { background: linear-gradient(145deg, #e3f2fd, #f3e5f5); border-radius: 10px; padding: 1.5rem; margin: 2rem 0; border-left: 6px solid #9c27b0; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
        .tip { background: #e8f5e9; border-left: 6px solid #4CAF50; padding: 1rem 1.5rem; margin: 1.5rem 0; }
        .figure { margin: 2.5rem auto; text-align: center; max-width: 900px; }
        .figure img { border-radius: 10px; box-shadow: 0 8px 20px rgba(0,0,0,0.15); border: 1px solid #ddd; }
        .figcaption { font-style: italic; color: #555; margin-top: 10px; font-size: 0.95rem; }
        .content-links { display: inline-block; background: #edf2f7; padding: 2px 8px; border-radius: 4px; margin: 0 2px; border-bottom: 2px solid transparent; }
        .content-links:hover { background: #cbd5e0; border-bottom-color: #0056b3; }
        .user-interaction { background: #f8f9fa; border-radius: 10px; padding: 2rem; margin: 3rem 0; border: 1px solid #dee2e6; }
        .interaction-title { color: #1a4b8c; font-size: 1.8rem; margin-bottom: 1.5rem; }
        .rating { display: flex; align-items: center; margin-bottom: 1.5rem; }
        .stars { color: #ffc107; font-size: 1.8rem; margin-right: 15px; }
        .comment-form, .score-form { display: grid; gap: 1rem; margin-top: 1.5rem; }
        .comment-form input, .comment-form textarea, .score-form select, .score-form input { padding: 12px; border: 1px solid #ccc; border-radius: 8px; font-size: 1rem; width: 100%; }
        .comment-form textarea { min-height: 150px; resize: vertical; }
        .form-group { display: flex; flex-direction: column; }
        .form-submit { background: linear-gradient(to right, #0a2e5c, #1a4b8c); color: white; border: none; padding: 15px 30px; border-radius: 8px; cursor: pointer; font-size: 1.1rem; font-weight: bold; transition: transform 0.3s, box-shadow 0.3s; }
        .form-submit:hover { transform: translateY(-3px); box-shadow: 0 7px 14px rgba(10, 46, 92, 0.3); }
        footer { background: linear-gradient(135deg, #0a2e5c, #122a4d); color: #cbd5e0; padding: 3rem 0 1.5rem; margin-top: auto; }
        .footer-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2.5rem; margin-bottom: 2rem; }
        .footer-section h3 { color: white; font-size: 1.4rem; margin-bottom: 1.2rem; border-bottom: 2px solid #4CAF50; padding-bottom: 0.5rem; display: inline-block; }
        .friend-links { list-style: none; padding-left: 0; }
        .friend-links li { margin-bottom: 0.8rem; }
        .friend-links a { color: #a0c4ff; display: block; padding: 5px 0; }
        .friend-links a:hover { color: white; padding-left: 10px; }
        .copyright { text-align: center; padding-top: 1.5rem; border-top: 1px solid #2d3748; font-size: 0.9rem; color: #94a3b8; }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            article { padding: 2rem; }
            .footer-content { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .header-top { flex-direction: column; gap: 1rem; }
            .my-logo { font-size: 1.8rem; }
            .search-form input { width: 200px; }
            .hamburger { display: block; position: absolute; top: -60px; right: 10px; }
            .nav-links { display: none; flex-direction: column; width: 100%; background: #1a3a6e; border-radius: 8px; padding: 1rem 0; }
            .nav-links.active { display: flex; }
            .nav-links li { width: 100%; text-align: center; }
            .nav-links a { padding: 15px; margin: 0; border-radius: 0; }
            .footer-content { grid-template-columns: 1fr; }
        }
        @media (max-width: 576px) {
            body, p { font-size: 1rem; }
            h1 { font-size: 2rem; }
            article { padding: 1.5rem; }
            .search-form input { width: 150px; }
        }