* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.3s ease;
        }
        ul, ol {
            list-style-position: inside;
        }
        h1, h2, h3, h4 {
            color: #2c3e50;
            margin-bottom: 1rem;
            line-height: 1.3;
            font-weight: 700;
        }
        h1 {
            font-size: clamp(2.2rem, 5vw, 3.5rem);
            margin-top: 1.5rem;
            color: #1a5276;
        }
        h2 {
            font-size: clamp(1.8rem, 4vw, 2.5rem);
            border-left: 5px solid #3498db;
            padding-left: 1rem;
            margin-top: 3rem;
        }
        h3 {
            font-size: clamp(1.5rem, 3vw, 1.9rem);
            color: #2874a6;
            margin-top: 2rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: clamp(1rem, 2vw, 1.1rem);
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: #555;
        }
        .highlight {
            background-color: #fffacd;
            padding: 0.2rem 0.5rem;
            border-radius: 3px;
            font-weight: 600;
        }
        .term {
            color: #e74c3c;
            font-weight: bold;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a5276 0%, #2c3e50 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 900;
            letter-spacing: 1px;
            color: #fff;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .logo span {
            color: #3498db;
        }
        .desktop-nav ul {
            display: flex;
            gap: 2rem;
        }
        .desktop-nav a {
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
        }
        .desktop-nav a:hover {
            color: #3498db;
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #3498db;
            transition: width 0.3s ease;
        }
        .desktop-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background: #2c3e50;
            flex-direction: column;
            padding: 1rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            z-index: 999;
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            padding: 1rem;
            border-bottom: 1px solid #34495e;
            font-weight: 600;
        }
        .mobile-nav a:hover {
            background: #1a5276;
            color: #3498db;
        }
        .breadcrumb {
            background: #e8f4fc;
            padding: 1rem;
            border-radius: 5px;
            margin: 1.5rem 0;
            font-size: 0.95rem;
        }
        .breadcrumb a {
            color: #3498db;
            font-weight: 600;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-box {
            background: #fff;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin: 2rem 0;
            text-align: center;
        }
        .search-box h3 {
            margin-top: 0;
            color: #1a5276;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 1.5rem auto;
        }
        .search-input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: 2px solid #3498db;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
        }
        .search-btn {
            background: #3498db;
            color: white;
            border: none;
            padding: 0 2rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: background 0.3s ease;
        }
        .search-btn:hover {
            background: #1a5276;
        }
        main {
            padding: 2rem 0;
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            margin-bottom: 3rem;
        }
        .featured-image {
            width: 100%;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .interactive-section {
            background: #f1f8ff;
            border-left: 5px solid #3498db;
            padding: 2rem;
            margin: 3rem 0;
            border-radius: 0 10px 10px 0;
        }
        .rating-form, .comment-form {
            display: grid;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ffc107;
            cursor: pointer;
        }
        .star:hover {
            transform: scale(1.2);
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        label {
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: #2c3e50;
        }
        input, textarea, select {
            padding: 0.8rem 1rem;
            border: 1px solid #bdc3c7;
            border-radius: 5px;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            border-color: #3498db;
            outline: none;
        }
        .submit-btn {
            background: #2ecc71;
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 5px;
            font-weight: 700;
            font-size: 1.1rem;
            cursor: pointer;
            transition: background 0.3s ease;
            justify-self: start;
        }
        .submit-btn:hover {
            background: #27ae60;
        }
        .btn-secondary {
            background: #3498db;
        }
        .btn-secondary:hover {
            background: #1a5276;
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 3rem 0;
        }
        .web-link {
            background: #fff;
            padding: 1.2rem;
            border-radius: 8px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
            border-left: 4px solid #3498db;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 15px rgba(0,0,0,0.1);
        }
        .web-link a {
            color: #1a5276;
            font-weight: 600;
        }
        .web-link a:hover {
            color: #3498db;
            text-decoration: underline;
        }
        footer {
            background: #1a252f;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #3498db;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links a {
            display: block;
            padding: 0.5rem 0;
            color: #bdc3c7;
        }
        .footer-links a:hover {
            color: #3498db;
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #34495e;
            color: #95a5a6;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .article-content {
                padding: 1.5rem;
            }
        }
        @media (max-width: 768px) {
            .search-form {
                flex-direction: column;
            }
            .search-input, .search-btn {
                border-radius: 50px;
                width: 100%;
            }
            .search-btn {
                margin-top: 1rem;
                padding: 1rem;
            }
            .interactive-section {
                padding: 1.5rem;
            }
            .web-links {
                grid-template-columns: 1fr;
            }
        }