* {
            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 {
            color: #4a6ee0;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #ff6b8b;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #6a11cb 0%, #2575fc 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;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: white;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
            font-family: 'Comic Sans MS', cursive, sans-serif;
        }
        .my-logo:hover {
            color: #ffde59;
        }
        .desktop-nav {
            display: flex;
            gap: 2rem;
        }
        .desktop-nav a {
            color: white;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: #ffde59;
            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;
            flex-direction: column;
            background: #2575fc;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 5px 10px rgba(0,0,0,0.2);
            z-index: 999;
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: white;
            padding: 0.8rem 1rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            font-weight: 600;
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #6c757d;
        }
        .breadcrumb a:hover {
            color: #4a6ee0;
        }
        .breadcrumb span {
            color: #495057;
            margin: 0 5px;
        }
        main {
            padding: 2rem 0;
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin-top: 1rem;
            margin-bottom: 2rem;
        }
        article {
            padding: 0 2rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #2d3748;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 4px solid #4a6ee0;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2.2rem;
            color: #4a5568;
            margin: 2.5rem 0 1.2rem 0;
            padding-left: 0.5rem;
            border-left: 5px solid #ff6b8b;
        }
        h3 {
            font-size: 1.8rem;
            color: #5a67d8;
            margin: 2rem 0 1rem 0;
        }
        h4 {
            font-size: 1.4rem;
            color: #718096;
            margin: 1.5rem 0 0.8rem 0;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            line-height: 1.8;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            color: #4a5568;
            font-weight: 500;
            background: #f1f8ff;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 5px solid #4a6ee0;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fff9db;
            padding: 1.5rem;
            border-radius: 8px;
            border: 1px dashed #ffd43b;
            margin: 2rem 0;
        }
        .highlight strong {
            color: #e67700;
        }
        em {
            font-style: italic;
            color: #555;
        }
        strong {
            color: #2d3748;
        }
        .article-image {
            margin: 2.5rem auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            max-width: 800px;
        }
        .article-image figcaption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 0.8rem;
            background: #f8f9fa;
            font-size: 0.95rem;
        }
        .user-interaction {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 2rem;
            margin: 3rem 0;
            border: 1px solid #dee2e6;
        }
        .interaction-title {
            font-size: 1.5rem;
            color: #495057;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .interaction-title i {
            color: #4a6ee0;
        }
        form {
            display: grid;
            gap: 1.2rem;
            max-width: 600px;
        }
        input, textarea, select {
            padding: 0.9rem;
            border: 1px solid #ced4da;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            width: 100%;
        }
        button, .btn {
            background: linear-gradient(to right, #4a6ee0, #6a11cb);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 6px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        button:hover, .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(106, 17, 203, 0.3);
        }
        .stars {
            display: flex;
            gap: 5px;
            font-size: 1.8rem;
            color: #ffc107;
            margin: 1rem 0;
        }
        .star {
            cursor: pointer;
        }
        .related-links {
            background: #e9f5ff;
            padding: 2rem;
            border-radius: 10px;
            margin: 3rem 0;
        }
        .related-links h3 {
            color: #2d3748;
            margin-top: 0;
        }
        .link-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.2rem;
            margin-top: 1.5rem;
        }
        .link-item {
            background: white;
            padding: 1.2rem;
            border-radius: 8px;
            border-left: 4px solid #4a6ee0;
            transition: transform 0.3s ease;
        }
        .link-item:hover {
            transform: translateX(10px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        footer {
            background: #2d3748;
            color: #cbd5e0;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-section h4 {
            color: #fff;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
        }
        friend-link a {
            color: #90cdf4;
        }
        friend-link a:hover {
            color: #63b3ed;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a5568;
            font-size: 0.95rem;
            color: #a0aec0;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
            .desktop-nav { display: none; }
            .hamburger { display: block; }
            .mobile-nav { display: none; }
            .footer-content { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .container { padding: 0 15px; }
            article { padding: 0 1rem; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.8rem; }
            .lead { font-size: 1.1rem; }
            .user-interaction { padding: 1.5rem; }
            .link-grid { grid-template-columns: 1fr; }
            .footer-content { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            .my-logo { font-size: 1.8rem; }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.6rem; }
            .interaction-title { font-size: 1.3rem; }
        }