* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: #007bff;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #0056b3;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .header {
            background: linear-gradient(135deg, #1a237e, #283593);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2rem;
            font-weight: bold;
            color: #ffeb3b;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo a:hover {
            color: #ffc107;
        }
        .nav {
            display: flex;
            align-items: center;
        }
        .nav-list {
            display: flex;
            list-style: none;
        }
        .nav-list li {
            margin-left: 2rem;
        }
        .nav-list a {
            color: white;
            font-weight: 500;
            padding: 0.5rem 0;
            border-bottom: 2px solid transparent;
        }
        .nav-list a:hover {
            border-bottom: 2px solid #ffeb3b;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: white;
        }
        .breadcrumb {
            background: #e3f2fd;
            padding: 0.8rem 20px;
            font-size: 0.9rem;
            color: #555;
        }
        .breadcrumb a {
            color: #1a237e;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-bar {
            margin: 2rem auto;
            max-width: 600px;
            padding: 0 20px;
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
        }
        .search-input {
            flex: 1;
            padding: 0.8rem 1rem;
            border: 2px solid #ddd;
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-input:focus {
            border-color: #007bff;
        }
        .search-button {
            background: #007bff;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 50px;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s;
        }
        .search-button:hover {
            background: #0056b3;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            padding: 2rem 20px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .article {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 6px 15px rgba(0,0,0,0.08);
        }
        .article h1 {
            font-size: 2.5rem;
            color: #1a237e;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article h2 {
            font-size: 2rem;
            color: #283593;
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ffeb3b;
        }
        .article h3 {
            font-size: 1.5rem;
            color: #3949ab;
            margin: 1.5rem 0 0.8rem;
        }
        .article p {
            margin-bottom: 1.2rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .article strong {
            color: #d32f2f;
            font-weight: bold;
        }
        .article em {
            color: #388e3c;
            font-style: italic;
        }
        .highlight {
            background: #fff9c4;
            padding: 1rem;
            border-left: 4px solid #ffeb3b;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .image-container {
            margin: 2rem auto;
            text-align: center;
        }
        .image-container img {
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            transition: transform 0.3s ease;
        }
        .image-container img:hover {
            transform: scale(1.02);
        }
        .image-caption {
            margin-top: 0.5rem;
            font-style: italic;
            color: #666;
        }
        .interactive-section {
            background: #f1f8ff;
            padding: 2rem;
            border-radius: 12px;
            margin-top: 3rem;
        }
        .interactive-section h2 {
            color: #1a237e;
            border-bottom: none;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: bold;
            color: #333;
        }
        .form-input, .form-textarea {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-input:focus, .form-textarea:focus {
            border-color: #007bff;
            outline: none;
        }
        .form-textarea {
            min-height: 120px;
            resize: vertical;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 0.5rem 0;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.3s;
        }
        .rating-stars label:hover,
        .rating-stars input:checked ~ label {
            color: #ffc107;
        }
        .submit-button {
            background: #28a745;
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 50px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: bold;
            transition: background 0.3s;
        }
        .submit-button:hover {
            background: #218838;
        }
        .footer-links {
            background: #e8eaf6;
            padding: 2rem 20px;
            margin-top: 3rem;
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        .web-link {
            background: white;
            padding: 1rem;
            border-radius: 8px;
            box-shadow: 0 3px 8px rgba(0,0,0,0.05);
            transition: transform 0.3s;
        }
        .web-link:hover {
            transform: translateY(-5px);
        }
        .web-link a {
            color: #1a237e;
            font-weight: 500;
        }
        .footer {
            background: #1a237e;
            color: white;
            text-align: center;
            padding: 2rem 20px;
        }
        .footer p {
            margin-bottom: 0.5rem;
        }
        .footer a {
            color: #ffeb3b;
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #283593;
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem 0;
                box-shadow: 0 4px 8px rgba(0,0,0,0.2);
            }
            .nav-list.active {
                display: flex;
            }
            .nav-list li {
                margin: 0;
                text-align: center;
                padding: 0.8rem 0;
            }
            .article h1 {
                font-size: 2rem;
            }
            .article h2 {
                font-size: 1.7rem;
            }
            .article h3 {
                font-size: 1.3rem;
            }
            .article p {
                font-size: 1rem;
            }
            .web-links {
                grid-template-columns: 1fr;
            }
        }