* {
            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: #f9f9f9;
            padding: 0;
            margin: 0;
        }
        a {
            text-decoration: none;
            color: #0066cc;
        }
        a:hover {
            color: #ff6600;
            text-decoration: underline;
        }
        ul, ol {
            list-style-position: inside;
            padding-left: 1rem;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        header {
            background: linear-gradient(135deg, #1a237e, #283593);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: bold;
            color: white;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo a:hover {
            color: #ffcc00;
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
        }
        .search-form input {
            padding: 0.5rem 1rem;
            border: none;
            border-radius: 20px;
            font-size: 1rem;
            min-width: 200px;
        }
        .search-form button {
            padding: 0.5rem 1.2rem;
            background: #ff6600;
            color: white;
            border: none;
            border-radius: 20px;
            cursor: pointer;
            font-weight: bold;
        }
        .search-form button:hover {
            background: #cc5500;
        }
        nav {
            margin-top: 1rem;
        }
        .breadcrumb {
            background: #3949ab;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            margin-bottom: 1rem;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #ffcc00;
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .nav-menu {
            display: flex;
            gap: 1.5rem;
            list-style: none;
        }
        .nav-menu li a {
            color: white;
            font-weight: 500;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
            transition: background 0.3s;
        }
        .nav-menu li a:hover {
            background: rgba(255,255,255,0.2);
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        main {
            background: white;
            padding: 2rem 1rem;
            margin: 1rem auto;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }
        article {
            max-width: 900px;
            margin: 0 auto;
        }
        h1 {
            font-size: 2.2rem;
            color: #1a237e;
            margin-bottom: 1rem;
            text-align: center;
            line-height: 1.3;
        }
        h2 {
            font-size: 1.8rem;
            color: #283593;
            margin: 2rem 0 1rem;
            border-bottom: 2px solid #ffcc00;
            padding-bottom: 0.5rem;
        }
        h3 {
            font-size: 1.4rem;
            color: #3949ab;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
            font-size: 1.1rem;
            line-height: 1.8;
        }
        .highlight {
            background: #fff9c4;
            padding: 1rem;
            border-left: 4px solid #ffcc00;
            margin: 1.5rem 0;
            border-radius: 0 5px 5px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .feature-image {
            text-align: center;
            margin: 2rem 0;
        }
        .feature-image img {
            border-radius: 10px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
            max-width: 800px;
            border: 3px solid #ffcc00;
        }
        .interactive-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .card {
            background: #f5f5f5;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 3px 8px rgba(0,0,0,0.1);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 6px 15px rgba(0,0,0,0.15);
        }
        .card h3 {
            color: #1a237e;
        }
        .card form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .card input, .card textarea, .card select {
            padding: 0.7rem;
            border: 1px solid #ccc;
            border-radius: 5px;
            font-size: 1rem;
        }
        .card button {
            padding: 0.8rem;
            background: #0066cc;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-weight: bold;
        }
        .card button:hover {
            background: #0052a3;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.5rem;
            color: #ffcc00;
            cursor: pointer;
        }
        .rating-stars span:hover {
            color: #ff9900;
        }
        .footer-links {
            background: #1a237e;
            color: white;
            padding: 2rem 1rem;
            margin-top: 2rem;
        }
        .web-links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin-bottom: 2rem;
        }
        .web-link {
            background: rgba(255,255,255,0.1);
            padding: 1rem;
            border-radius: 5px;
            transition: background 0.3s;
        }
        .web-link:hover {
            background: rgba(255,255,255,0.2);
        }
        .web-link a {
            color: #ffcc00;
            font-weight: 500;
        }
        .copyright {
            text-align: center;
            padding: 1rem;
            font-size: 0.9rem;
            border-top: 1px solid rgba(255,255,255,0.3);
        }
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                gap: 1rem;
                align-items: stretch;
            }
            .search-form input {
                min-width: 100%;
            }
            .hamburger {
                display: block;
                align-self: flex-end;
                margin-top: -3rem;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                gap: 0.5rem;
                width: 100%;
                background: #283593;
                padding: 1rem;
                border-radius: 5px;
                margin-top: 1rem;
            }
            .nav-menu.active {
                display: flex;
            }
            .nav-container {
                flex-direction: column;
                align-items: stretch;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .interactive-section {
                grid-template-columns: 1fr;
            }
            .web-links-grid {
                grid-template-columns: 1fr;
            }
        }
        .text-center {
            text-align: center;
        }
        .bold {
            font-weight: bold;
            color: #d32f2f;
        }
        .spacing {
            margin: 2rem 0;
        }