:root {
            --primary: #4A6FA5; 
            --secondary: #FF9F66; 
            --accent: #6BCF7F; 
            --dark: #2C3E50;
            --light: #F8F9FA;
            --text: #333333;
            --text-light: #666666;
            --border: #E0E0E0;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --radius: 12px;
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        * {
            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: var(--text);
            background-color: #fff;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        ul, ol {
            list-style-position: inside;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .site-header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-icon {
            color: var(--secondary);
        }
        .main-nav ul {
            display: flex;
            gap: 30px;
        }
        .main-nav a {
            font-weight: 600;
            padding: 8px 5px;
            position: relative;
            transition: var(--transition);
        }
        .main-nav a:hover {
            color: var(--secondary);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--secondary);
            transition: width 0.3s;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: var(--dark);
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--light);
            padding: 12px 20px;
            border-bottom: 1px solid var(--border);
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin: 0 10px;
            color: var(--text-light);
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .featured-image {
            margin: 30px auto;
            max-width: 900px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .featured-image img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .featured-image:hover img {
            transform: scale(1.02);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            padding: 10px;
            color: var(--text-light);
            font-size: 0.9rem;
            border-top: 1px solid var(--border);
            background-color: #f9f9f9;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 30px 20px;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            font-size: 1.1rem;
        }
        .article-content h1 {
            font-size: 2.5rem;
            color: var(--dark);
            margin-bottom: 1.5rem;
            line-height: 1.3;
        }
        .article-content h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 2.5rem 0 1rem;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border);
        }
        .article-content h3 {
            font-size: 1.5rem;
            color: var(--secondary);
            margin: 2rem 0 0.8rem;
        }
        .article-content p {
            margin-bottom: 1.8rem;
            text-align: justify;
        }
        .article-content strong {
            color: var(--primary);
            font-weight: 700;
        }
        .article-content em {
            color: var(--secondary);
            font-style: italic;
        }
        .highlight-box {
            background: linear-gradient(135deg, #e3f2fd, #f3e5f5);
            border-left: 5px solid var(--accent);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
            box-shadow: var(--shadow);
        }
        .tip {
            background-color: #fff8e1;
            padding: 15px;
            border-radius: var(--radius);
            margin: 20px 0;
            border-left: 4px solid #ffc107;
        }
        .stat-box {
            background: var(--dark);
            color: white;
            padding: 20px;
            border-radius: var(--radius);
            text-align: center;
            margin: 25px 0;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
            line-height: 1;
        }
        .sidebar {
            background: var(--light);
            border-radius: var(--radius);
            padding: 25px;
            align-self: start;
            position: sticky;
            top: 120px;
            box-shadow: var(--shadow);
        }
        .sidebar-widget {
            margin-bottom: 30px;
        }
        .sidebar-widget h3 {
            color: var(--primary);
            margin-bottom: 15px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--border);
        }
        .search-form {
            display: flex;
            margin-bottom: 5px;
        }
        .search-form input {
            flex: 1;
            padding: 14px;
            border: 2px solid var(--border);
            border-right: none;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: var(--secondary);
        }
        .rating-form, .comment-form {
            background: white;
            padding: 20px;
            border-radius: var(--radius);
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary);
            outline: none;
        }
        .stars {
            display: flex;
            gap: 10px;
            direction: rtl; 
        }
        .star-label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star-label:hover,
        .star-label:hover ~ .star-label {
            color: #ffc107;
        }
        .star-input:checked ~ .star-label {
            color: #ffc107;
        }
        .star-input {
            display: none;
        }
        .submit-btn {
            background-color: var(--accent);
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            width: 100%;
        }
        .submit-btn:hover {
            background-color: var(--primary);
            transform: translateY(-2px);
        }
        .web-links-section {
            background: linear-gradient(to right, #f8f9fa, #e9ecef);
            padding: 40px 20px;
            margin: 40px 0;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
        }
        .web-link {
            background: white;
            padding: 20px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
            border-left: 4px solid var(--primary);
        }
        .web-link:hover {
            transform: translateY(-5px);
            border-left-color: var(--secondary);
        }
        .web-link a {
            font-weight: 600;
            color: var(--dark);
            display: block;
        }
        .web-link a:hover {
            color: var(--primary);
        }
        .web-link p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-top: 8px;
        }
        .site-footer {
            background-color: var(--dark);
            color: white;
            padding: 50px 20px 20px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            margin-bottom: 20px;
            display: inline-block;
        }
        .footer-about p {
            color: #bbb;
        }
        .footer-links h4,
        .footer-contact h4 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.2rem;
        }
        .footer-links ul li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #bbb;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary);
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-container {
                padding: 12px 15px;
            }
            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: white;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
                transform: translateY(-150%);
                opacity: 0;
                transition: transform 0.4s ease, opacity 0.3s ease;
                z-index: 999;
            }
            .main-nav.active {
                transform: translateY(0);
                opacity: 1;
            }
            .main-nav ul {
                flex-direction: column;
                padding: 20px;
                gap: 0;
            }
            .main-nav li {
                border-bottom: 1px solid var(--border);
            }
            .main-nav a {
                display: block;
                padding: 15px;
            }
            .hamburger {
                display: block;
            }
            .article-content h1 {
                font-size: 2rem;
            }
            .article-content h2 {
                font-size: 1.7rem;
            }
            .content-wrapper {
                padding: 20px 15px;
                gap: 30px;
            }
            .sidebar {
                position: static;
            }
        }
        @media print {
            .site-header, .sidebar, .web-links-section, .site-footer, .search-form, .rating-form, .comment-form {
                display: none;
            }
            .content-wrapper {
                grid-template-columns: 1fr;
                padding: 0;
            }
            body {
                font-size: 12pt;
                line-height: 1.5;
                color: black;
            }
        }