:root {
            --primary-dark: #1a237e;
            --primary-main: #283593;
            --primary-light: #5c6bc0;
            --accent-gold: #ffb300;
            --accent-maroon: #8b0000;
            --text-primary: #212121;
            --text-secondary: #757575;
            --bg-light: #f5f5f5;
            --bg-parchment: #f8f3e9;
            --border-color: #ddd;
            --shadow-light: 0 2px 8px rgba(0,0,0,0.08);
            --shadow-medium: 0 4px 16px rgba(0,0,0,0.12);
            --font-serif: 'Georgia', 'Times New Roman', serif;
            --font-sans: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            color: var(--text-primary);
            line-height: 1.7;
            background-color: var(--bg-light);
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--primary-main);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: var(--accent-maroon);
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-main));
            color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow-medium);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: var(--font-serif);
            font-size: 2.2rem;
            font-weight: bold;
            color: var(--accent-gold);
            text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
            letter-spacing: 1px;
        }
        .my-logo a {
            color: inherit;
        }
        .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, .nav-desktop a.active {
            color: var(--accent-gold);
            border-bottom-color: var(--accent-gold);
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger-btn {
                display: block;
            }
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background-color: var(--primary-dark);
            flex-direction: column;
            padding: 1rem;
            box-shadow: var(--shadow-medium);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: white;
            padding: 0.8rem 1rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .mobile-nav a:hover {
            background-color: rgba(255,255,255,0.05);
            color: var(--accent-gold);
        }
        .breadcrumb {
            background-color: var(--bg-parchment);
            padding: 0.8rem 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--primary-main);
        }
        .breadcrumb i {
            margin: 0 0.5rem;
            color: var(--text-secondary);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2.5rem 0;
            flex-grow: 1;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background-color: white;
            padding: 2.5rem;
            border-radius: 8px;
            box-shadow: var(--shadow-light);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        h1, h2, h3, h4 {
            font-family: var(--font-serif);
            color: var(--primary-dark);
            margin-top: 2rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            border-bottom: 3px solid var(--accent-gold);
            padding-bottom: 1rem;
            margin-top: 0;
        }
        h2 {
            font-size: 2rem;
            border-left: 4px solid var(--primary-light);
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.6rem;
            color: var(--accent-maroon);
        }
        h4 {
            font-size: 1.3rem;
            color: var(--text-secondary);
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            color: var(--primary-main);
            font-weight: 500;
            background-color: rgba(40, 53, 147, 0.05);
            padding: 1.5rem;
            border-radius: 6px;
            border-left: 4px solid var(--primary-light);
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: rgba(255, 179, 0, 0.15);
            padding: 0.2rem 0.4rem;
            border-radius: 3px;
            font-weight: 600;
        }
        strong {
            color: var(--primary-dark);
        }
        em {
            color: var(--accent-maroon);
            font-style: italic;
        }
        blockquote {
            border-left: 4px solid var(--accent-gold);
            padding: 1.5rem;
            margin: 2rem 0;
            background-color: var(--bg-parchment);
            font-style: italic;
            color: var(--text-secondary);
        }
        .content-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 6px;
            margin: 2rem auto;
            display: block;
            box-shadow: var(--shadow-medium);
            border: 1px solid var(--border-color);
        }
        .img-caption {
            text-align: center;
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 0.5rem;
            margin-bottom: 2rem;
        }
        .link-cluster {
            background-color: var(--bg-parchment);
            padding: 1.5rem;
            border-radius: 6px;
            margin: 2rem 0;
        }
        .link-cluster h4 {
            margin-top: 0;
        }
        .link-cluster ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 0.8rem;
            list-style: none;
        }
        .link-cluster li {
            padding: 0.5rem 0;
            border-bottom: 1px dashed var(--border-color);
        }
        .module {
            background-color: white;
            padding: 1.8rem;
            border-radius: 8px;
            box-shadow: var(--shadow-light);
            margin-bottom: 2rem;
        }
        .module h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .module h3 i {
            color: var(--accent-gold);
        }
        .search-box input, .comment-form input, .comment-form textarea, .rating-form select {
            width: 100%;
            padding: 0.9rem;
            margin-bottom: 1rem;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            font-family: var(--font-sans);
            transition: border 0.3s;
        }
        .search-box input:focus, .comment-form input:focus, .comment-form textarea:focus, .rating-form select:focus {
            outline: none;
            border-color: var(--primary-light);
        }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, var(--primary-main), var(--primary-dark));
            color: white;
            padding: 0.9rem 1.8rem;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
            text-align: center;
        }
        .btn:hover {
            background: linear-gradient(to right, var(--primary-dark), var(--accent-maroon));
            transform: translateY(-2px);
            box-shadow: var(--shadow-medium);
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 1.5rem;
            color: #ddd;
        }
        .star-rating label {
            cursor: pointer;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label {
            color: var(--accent-gold);
        }
        .update-info {
            font-size: 0.9rem;
            color: var(--text-secondary);
            background-color: rgba(255, 179, 0, 0.1);
            padding: 1rem;
            border-radius: 6px;
            border-left: 3px solid var(--accent-gold);
        }
        .toc {
            position: sticky;
            top: 120px;
        }
        .toc ul {
            list-style: none;
            padding-left: 1rem;
        }
        .toc li {
            margin-bottom: 0.7rem;
        }
        .toc a {
            color: var(--text-secondary);
            display: block;
            padding: 0.3rem 0.5rem;
            border-radius: 3px;
            transition: all 0.2s;
        }
        .toc a:hover, .toc a.active {
            color: var(--primary-main);
            background-color: rgba(40, 53, 147, 0.05);
            padding-left: 1rem;
        }
        .site-footer {
            background-color: var(--primary-dark);
            color: white;
            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: 2.5rem;
        }
        .footer-section h4 {
            color: var(--accent-gold);
            margin-top: 0;
            font-size: 1.2rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #ccc;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 0.5rem;
        }
        friend-link {
            display: block;
            background-color: rgba(255,255,255,0.05);
            padding: 1rem;
            border-radius: 5px;
            margin-top: 1rem;
        }
        friend-link a {
            color: var(--accent-gold);
            font-weight: 500;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #aaa;
            font-size: 0.9rem;
        }