* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #1a5276;
            --secondary-color: #e74c3c;
            --accent-color: #f39c12;
            --text-color: #2c3e50;
            --light-bg: #f8f9fa;
            --dark-bg: #2c3e50;
            --border-color: #ddd;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: var(--light-bg);
        }
        .header {
            background: linear-gradient(135deg, var(--primary-color), #154360);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 2rem;
            font-weight: 700;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--accent-color);
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        .nav-desktop a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-desktop a:hover {
            background-color: rgba(255,255,255,0.1);
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: var(--dark-bg);
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: white;
            text-decoration: none;
            padding: 0.8rem 1rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .breadcrumb {
            background-color: #ecf0f1;
            padding: 1rem 20px;
            font-size: 0.9rem;
        }
        .breadcrumb-container {
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .search-container {
            max-width: 800px;
            margin: 2rem auto;
            padding: 0 20px;
        }
        .search-box {
            display: flex;
            gap: 10px;
        }
        .search-box input {
            flex: 1;
            padding: 12px 20px;
            border: 2px solid var(--border-color);
            border-radius: 30px;
            font-size: 1rem;
        }
        .search-box button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: 30px;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background-color: #154360;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
        }
        .main-content {
            background-color: white;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        article h1 {
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            font-size: 2.5rem;
            line-height: 1.2;
        }
        article h2 {
            color: var(--primary-color);
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent-color);
        }
        article h3 {
            color: var(--secondary-color);
            margin: 1.5rem 0 1rem;
        }
        article p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            line-height: 1.8;
        }
        .highlight-box {
            background-color: #e8f4fc;
            border-left: 4px solid var(--primary-color);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 4px;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .featured-image {
            width: 100%;
            height: auto;
            border-radius: 8px;
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .term-highlight {
            background-color: #fff3cd;
            padding: 2px 6px;
            border-radius: 3px;
            font-weight: 600;
        }
        .sidebar {
            background-color: white;
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: var(--shadow);
            height: fit-content;
        }
        .rating-widget, .comment-form {
            margin-bottom: 2rem;
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            margin: 10px 0;
        }
        .rating-stars i {
            color: #ffd700;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        .comment-form textarea {
            width: 100%;
            padding: 10px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            margin-bottom: 10px;
            resize: vertical;
            min-height: 100px;
        }
        .comment-form button {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 4px;
            cursor: pointer;
            transition: var(--transition);
        }
        .comment-form button:hover {
            background-color: #c0392b;
        }
        .web-links-section {
            max-width: 1200px;
            margin: 3rem auto;
            padding: 0 20px;
        }
        .web-links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1rem;
            margin-top: 1rem;
        }
        .web-link {
            background-color: white;
            padding: 1rem;
            border-radius: 6px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }
        .web-link a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
        }
        .web-link a:hover {
            text-decoration: underline;
        }
        .footer {
            background-color: var(--dark-bg);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h3 {
            color: var(--accent-color);
            margin-bottom: 1rem;
        }
        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            display: block;
            margin-bottom: 0.5rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #95a5a6;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .container {
                grid-template-columns: 1fr;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
            }
            article h1 {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                gap: 1rem;
            }
            .search-box {
                flex-direction: column;
            }
            .web-links-grid {
                grid-template-columns: 1fr;
            }
        }
        @media print {
            .header, .sidebar, .search-container,
            .web-links-section, .footer {
                display: none;
            }
            .container {
                grid-template-columns: 1fr;
                max-width: 100%;
            }
            .main-content {
                box-shadow: none;
                padding: 0;
            }
        }