* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #8B0000;
            --secondary-color: #FFD700;
            --accent-color: #2E8B57;
            --text-dark: #333333;
            --text-light: #666666;
            --bg-light: #F8F9FA;
            --bg-dark: #1A1A1A;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --border-radius: 8px;
            --container-width: 1200px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: var(--bg-light);
            font-size: 18px;
        }
        h1, h2, h3, h4 {
            font-family: Georgia, 'Times New Roman', Times, serif;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 3.2rem;
            border-bottom: 3px solid var(--secondary-color);
            padding-bottom: 1rem;
            margin-top: 2rem;
        }
        h2 {
            font-size: 2.5rem;
            margin-top: 3.5rem;
            padding-left: 1rem;
            border-left: 5px solid var(--accent-color);
        }
        h3 {
            font-size: 1.9rem;
            margin-top: 2.5rem;
            color: var(--accent-color);
        }
        p {
            margin-bottom: 1.8rem;
            text-align: justify;
            hyphens: auto;
        }
        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #2c003e 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-family: 'Palatino Linotype', 'Book Antiqua', Palatino, serif;
            font-size: 2.8rem;
            font-weight: bold;
            text-decoration: none;
            color: var(--secondary-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--primary-color);
        }
        .nav-desktop {
            display: flex;
            gap: 2.5rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
            position: relative;
        }
        .nav-desktop a:hover {
            background-color: rgba(255, 215, 0, 0.15);
            color: var(--secondary-color);
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--secondary-color);
            transition: width 0.3s ease;
        }
        .nav-desktop a:hover::after {
            width: 80%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--bg-dark);
            padding: 1rem;
            box-shadow: var(--shadow);
            flex-direction: column;
            gap: 1rem;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: white;
            text-decoration: none;
            padding: 0.8rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .nav-mobile a:hover {
            background-color: rgba(255, 215, 0, 0.2);
        }
        .breadcrumb {
            padding: 1.2rem 0;
            background-color: #f0f0f0;
            font-size: 0.95rem;
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: var(--text-light);
        }
        main {
            padding: 3rem 0;
            background: white;
            min-height: 80vh;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin: 2rem 0;
            padding: 1.5rem;
            background: linear-gradient(to right, #f8f9fa, #e9ecef);
            border-radius: var(--border-radius);
            border-left: 5px solid var(--accent-color);
        }
        .author-info {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .author-avatar {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: var(--primary-color);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
        }
        .featured-image {
            margin: 3rem 0;
            text-align: center;
        }
        .featured-image img {
            max-width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: transform 0.5s ease;
        }
        .featured-image img:hover {
            transform: scale(1.02);
        }
        .image-caption {
            font-style: italic;
            color: var(--text-light);
            margin-top: 1rem;
            font-size: 0.95rem;
        }
        .content-section {
            margin: 3rem 0;
            padding: 2.5rem;
            background: var(--bg-light);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .highlight-box {
            background: linear-gradient(135deg, #fff8e1, #ffecb3);
            border-left: 6px solid var(--secondary-color);
            padding: 2rem;
            margin: 2.5rem 0;
            border-radius: var(--border-radius);
        }
        .highlight-box h3 {
            color: #b8860b;
            margin-top: 0;
        }
        .key-terms {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 1.5rem;
            margin: 3rem 0;
        }
        .term-card {
            background: white;
            padding: 1.8rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .term-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }
        .term-card h4 {
            color: var(--primary-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .interactive-section {
            background: linear-gradient(135deg, #f5f5f5, #e8f4f8);
            padding: 3rem;
            border-radius: var(--border-radius);
            margin: 4rem 0;
        }
        .form-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2.5rem;
            margin-top: 2rem;
        }
        .form-group {
            margin-bottom: 1.8rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.7rem;
            font-weight: 600;
            color: var(--text-dark);
        }
        .form-control {
            width: 100%;
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--accent-color);
            box-shadow: 0 0 0 3px rgba(46, 139, 87, 0.2);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--secondary-color);
        }
        .btn {
            background: linear-gradient(135deg, var(--primary-color), #a00000);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            border-radius: var(--border-radius);
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn:hover {
            background: linear-gradient(135deg, #a00000, #8B0000);
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(139, 0, 0, 0.3);
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.2rem;
            margin: 3rem 0;
        }
        .web-link {
            background: white;
            padding: 1.2rem;
            border-radius: var(--border-radius);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateX(5px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }
        .web-link a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
            display: block;
        }
        .web-link a:hover {
            text-decoration: underline;
        }
        footer {
            background: var(--bg-dark);
            color: white;
            padding: 4rem 0 2rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 3rem;
        }
        .footer-section h3 {
            color: var(--secondary-color);
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.5rem;
            }
            h2 {
                font-size: 2rem;
            }
            .container {
                padding: 0 15px;
            }
            .article-meta {
                flex-direction: column;
                gap: 1.5rem;
                align-items: flex-start;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .interactive-section {
                padding: 2rem;
            }
            .content-section {
                padding: 1.5rem;
            }
        }
        @media print {
            header, footer, .interactive-section, .breadcrumb {
                display: none;
            }
            body {
                font-size: 12pt;
                line-height: 1.5;
            }
            a {
                color: black;
                text-decoration: none;
            }
        }