* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            text-decoration: none;
            color: #3a5da8;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #1e3a8a;
        }
        ul, ol {
            padding-left: 1.5rem;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .site-header {
            background: linear-gradient(135deg, #1e3a8a 0%, #3a5da8 100%);
            color: white;
            padding: 1rem 2rem;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1280px;
            margin: 0 auto;
        }
        .my-logo {
            font-family: 'Georgia', serif;
            font-size: 2.2rem;
            font-weight: bold;
            color: #ffd700;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .my-logo:hover {
            color: #fff;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            color: white;
            font-weight: 500;
            padding: 0.5rem 0;
            border-bottom: 2px solid transparent;
        }
        .nav-desktop a:hover {
            border-bottom-color: #ffd700;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: #1e3a8a;
            padding: 1rem;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            box-shadow: 0 8px 16px rgba(0,0,0,0.2);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: white;
            padding: 0.8rem 1rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.75rem 2rem;
            font-size: 0.9rem;
            max-width: 1280px;
            margin: 0 auto;
            width: 100%;
        }
        .breadcrumb a {
            color: #495057;
        }
        .breadcrumb a:hover {
            color: #1e3a8a;
        }
        .main-container {
            flex: 1;
            max-width: 1280px;
            margin: 0 auto;
            padding: 2rem;
            width: 100%;
        }
        article {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
            margin-bottom: 2rem;
        }
        h1 {
            color: #1e3a8a;
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 6px solid #ffd700;
            padding-left: 1rem;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
        }
        h2 {
            color: #3a5da8;
            font-size: 2rem;
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e9ecef;
        }
        h3 {
            color: #495057;
            font-size: 1.5rem;
            margin: 1.8rem 0 0.8rem;
        }
        h4 {
            color: #6c757d;
            font-size: 1.2rem;
            margin: 1.5rem 0 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.25rem;
            color: #555;
            font-weight: 500;
            margin-bottom: 2rem;
            padding: 1rem;
            background-color: #f8f9fa;
            border-radius: 8px;
            border-left: 4px solid #3a5da8;
        }
        .highlight {
            background-color: #fff9db;
            padding: 1.5rem;
            border-radius: 8px;
            border: 1px solid #ffd700;
            margin: 1.5rem 0;
        }
        .highlight strong {
            color: #b45309;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .figure-container {
            margin: 2rem auto;
            text-align: center;
            max-width: 800px;
        }
        .figure-container img {
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            margin-bottom: 0.75rem;
        }
        .figure-container figcaption {
            font-style: italic;
            color: #6c757d;
            font-size: 0.95rem;
        }
        .related-links {
            background-color: #f1f8ff;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .related-links h3 {
            color: #1e3a8a;
            margin-top: 0;
        }
        .related-links ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 0.75rem;
            list-style-type: none;
            padding-left: 0;
        }
        .related-links li {
            padding: 0.5rem 0;
            border-bottom: 1px dashed #c5d7f2;
        }
        .related-links li:last-child {
            border-bottom: none;
        }
        .related-links a {
            display: block;
            padding: 0.5rem;
            border-radius: 5px;
        }
        .related-links a:hover {
            background-color: #e1ecff;
        }
        .interactive-module {
            margin: 3rem 0;
            padding: 2rem;
            background: linear-gradient(145deg, #f8f9fa, #e9ecef);
            border-radius: 12px;
            border: 1px solid #dee2e6;
        }
        .module-title {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            color: #1e3a8a;
            margin-bottom: 1.5rem;
        }
        .module-title i {
            font-size: 1.8rem;
        }
        .search-box, .comment-box, .rating-box {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 1.5rem;
        }
        .search-box input, .comment-box input, .comment-box textarea, .rating-box select {
            flex: 1;
            min-width: 200px;
            padding: 0.85rem 1rem;
            border: 2px solid #ced4da;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .search-box input:focus, .comment-box input:focus, .comment-box textarea:focus, .rating-box select:focus {
            outline: none;
            border-color: #3a5da8;
        }
        .comment-box textarea {
            min-height: 120px;
            resize: vertical;
            width: 100%;
        }
        button, .btn {
            background: linear-gradient(to right, #3a5da8, #1e3a8a);
            color: white;
            border: none;
            padding: 0.85rem 1.8rem;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 8px rgba(58, 93, 168, 0.3);
        }
        button:hover, .btn:hover {
            background: linear-gradient(to right, #2d4a8a, #152a5e);
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(58, 93, 168, 0.4);
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star.active, .star:hover {
            color: #ffd700;
        }
        .site-footer {
            background-color: #1e3a8a;
            color: white;
            padding: 3rem 2rem 1.5rem;
            margin-top: auto;
        }
        .footer-container {
            max-width: 1280px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-logo {
            font-family: 'Georgia', serif;
            font-size: 2rem;
            font-weight: bold;
            color: #ffd700;
            margin-bottom: 1rem;
        }
        .footer-section h4 {
            color: #ffd700;
            margin-bottom: 1.2rem;
            font-size: 1.3rem;
        }
        .footer-section ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-section li {
            margin-bottom: 0.7rem;
        }
        .footer-section a {
            color: #c5d7f2;
        }
        .footer-section a:hover {
            color: white;
            text-decoration: underline;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: 8px;
            margin-bottom: 1rem;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
            color: #c5d7f2;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .site-header, .breadcrumb, .main-container, .footer-container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            article {
                padding: 1.5rem;
            }
            .related-links ul {
                grid-template-columns: 1fr;
            }
            .interactive-module {
                padding: 1.5rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.4rem;
            }
        }