* {
            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: #333;
            background-color: #f8f9fa;
            background-image: linear-gradient(to bottom right, #f8f9fa, #e9ecef);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin-top: 30px;
        }
        @media (max-width: 992px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
        }
        .site-header {
            background: linear-gradient(135deg, #1a237e, #283593);
            color: white;
            padding: 1.5rem 0;
            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;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: #ffc107;
            text-decoration: none;
            font-family: 'Georgia', serif;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
            letter-spacing: -0.5px;
        }
        .logo span {
            color: #4fc3f7;
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            color: #e3f2fd;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .desktop-nav a:hover,
        .desktop-nav a:focus {
            background-color: rgba(255, 255, 255, 0.15);
            color: #ffc107;
            transform: translateY(-2px);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            background-color: #283593;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 5px 10px rgba(0,0,0,0.2);
        }
        .mobile-nav.active {
            display: block;
        }
        .mobile-nav ul {
            list-style: none;
        }
        .mobile-nav a {
            display: block;
            color: #e3f2fd;
            padding: 0.8rem;
            text-decoration: none;
            border-bottom: 1px solid #3949ab;
            transition: background 0.3s;
        }
        .mobile-nav a:hover {
            background-color: #3949ab;
        }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-menu-btn { display: block; }
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #e8eaf6;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin-left: 0.5rem;
            color: #5c6bc0;
        }
        .breadcrumb a {
            color: #3949ab;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 2rem 0;
            background-color: white;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            overflow: hidden;
        }
        .article-content {
            padding: 0 2rem;
        }
        @media (max-width: 768px) {
            .article-content {
                padding: 0 1rem;
            }
        }
        h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #ffc107;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: #283593;
            margin: 2.5rem 0 1.2rem;
            padding-left: 0.5rem;
            border-left: 5px solid #4fc3f7;
        }
        h3 {
            font-size: 1.5rem;
            color: #3949ab;
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            color: #555;
            font-weight: 500;
            background-color: #f3f4ff;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 5px solid #ffc107;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fff9c4;
            padding: 0.2rem 0.5rem;
            border-radius: 3px;
            font-weight: 600;
        }
        .term {
            font-style: italic;
            color: #d81b60;
            font-weight: 500;
        }
        blockquote {
            border-left: 4px solid #7986cb;
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: #555;
            background-color: #f8f9ff;
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        ul, ol {
            margin-bottom: 1.5rem;
            padding-left: 2rem;
        }
        li {
            margin-bottom: 0.7rem;
        }
        .feature-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 10px;
            margin: 2.5rem auto;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
            transition: transform 0.5s ease;
        }
        .feature-img:hover {
            transform: scale(1.01);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .module {
            background-color: #f5f7ff;
            border-radius: 10px;
            padding: 2rem;
            margin: 3rem 0;
            border: 1px solid #d1d9ff;
            box-shadow: 0 4px 8px rgba(0,0,0,0.05);
        }
        .module h3 {
            margin-top: 0;
            color: #1a237e;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .module h3 i {
            color: #ff9800;
        }
        .search-box, .comment-form, .rating-form {
            margin-top: 1.5rem;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #444;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid #bdc8f0;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #5c6bc0;
            box-shadow: 0 0 0 3px rgba(92, 107, 192, 0.2);
        }
        button, .btn {
            background: linear-gradient(to right, #5c6bc0, #3949ab);
            color: white;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-block;
            text-decoration: none;
            font-size: 1rem;
        }
        button:hover, .btn:hover {
            background: linear-gradient(to right, #3949ab, #283593);
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
            direction: rtl; 
        }
        .stars input {
            display: none;
        }
        .stars label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .stars input:checked ~ label,
        .stars label:hover,
        .stars label:hover ~ label {
            color: #ffc107;
        }
        .sidebar {
            background-color: #f8f9ff;
            border-radius: 10px;
            padding: 1.5rem;
            align-self: start;
            position: sticky;
            top: 120px;
            border: 1px solid #e0e0ff;
        }
        .sidebar h3 {
            color: #1a237e;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ffc107;
        }
        .sidebar ul {
            list-style: none;
            padding-left: 0;
        }
        .sidebar li {
            margin-bottom: 0.8rem;
        }
        .sidebar a {
            color: #3949ab;
            text-decoration: none;
            display: block;
            padding: 0.6rem 0.8rem;
            border-radius: 5px;
            transition: all 0.3s;
        }
        .sidebar a:hover {
            background-color: #e8eaf6;
            padding-left: 1.2rem;
            color: #1a237e;
        }
        .cta-box {
            background: linear-gradient(135deg, #e3f2fd, #bbdefb);
            padding: 1.5rem;
            border-radius: 8px;
            margin-top: 2rem;
            text-align: center;
        }
        .footer-links {
            background-color: #1a237e;
            padding: 3rem 0;
            margin-top: 4rem;
        }
        .web-link {
            display: inline-block;
            background-color: rgba(255, 255, 255, 0.1);
            margin: 0.5rem;
            padding: 0.7rem 1.2rem;
            border-radius: 30px;
            transition: all 0.3s;
        }
        .web-link a {
            color: #e3f2fd;
            text-decoration: none;
            font-size: 0.95rem;
        }
        .web-link:hover {
            background-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }
        .links-container {
            text-align: center;
            max-width: 1000px;
            margin: 0 auto;
        }
        .site-footer {
            background-color: #0d1440;
            color: #b0b7e0;
            text-align: center;
            padding: 2rem 0;
            font-size: 0.95rem;
        }
        .site-footer a {
            color: #4fc3f7;
            text-decoration: none;
        }
        .site-footer a:hover {
            text-decoration: underline;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.7rem; }
            h3 { font-size: 1.3rem; }
            .module { padding: 1.5rem; }
            .sidebar { position: static; }
        }