* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            color: #333;
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: #2c5aa0;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #e63946;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: #1a365d;
            color: white;
            padding: 1rem 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;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #ffd166, #e63946);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 1px;
        }
        .my-logo a {
            background: none;
            -webkit-text-fill-color: unset;
            color: inherit;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #e2e8f0;
            font-weight: 600;
            padding: 0.5rem 0.75rem;
            border-radius: 4px;
        }
        .main-nav a:hover, .main-nav a.active {
            background-color: #2d3748;
            color: #ffd166;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #edf2f7;
            padding: 0.75rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb a {
            color: #4a5568;
        }
        .breadcrumb a:hover {
            color: #1a365d;
        }
        .breadcrumb span {
            color: #718096;
        }
        .hero {
            background: linear-gradient(rgba(26, 54, 93, 0.85), rgba(26, 54, 93, 0.9)), url('https://images.unsplash.com/photo-1549605659-32d82da3a059?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            color: white;
            text-align: center;
            padding: 4rem 2rem;
            border-radius: 12px;
            margin-bottom: 3rem;
        }
        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 1rem;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            opacity: 0.9;
        }
        .search-box {
            max-width: 600px;
            margin: 2rem auto 0;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
        }
        .search-box input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1rem;
        }
        .search-box button {
            background-color: #e63946;
            color: white;
            border: none;
            padding: 0 2rem;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s;
        }
        .search-box button:hover {
            background-color: #d32f2f;
        }
        .content-area {
            flex: 1;
            padding: 2rem 0;
        }
        .article-body {
            background: white;
            padding: 3rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
            margin-bottom: 3rem;
        }
        .article-body h2 {
            color: #1a365d;
            border-bottom: 3px solid #ffd166;
            padding-bottom: 0.5rem;
            margin: 2.5rem 0 1.5rem;
            font-size: 2.2rem;
        }
        .article-body h3 {
            color: #2d3748;
            margin: 2rem 0 1rem;
            font-size: 1.7rem;
        }
        .article-body h4 {
            color: #4a5568;
            margin: 1.5rem 0 0.75rem;
            font-size: 1.3rem;
        }
        .article-body p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .article-body b, .article-body strong {
            color: #1a365d;
        }
        .article-body em {
            color: #e63946;
            font-style: italic;
        }
        .highlight-box {
            background: #f0f9ff;
            border-left: 5px solid #2c5aa0;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .feature-img {
            width: 100%;
            max-width: 800px;
            margin: 2rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .feature-img figcaption {
            text-align: center;
            font-style: italic;
            padding: 0.5rem;
            color: #666;
            font-size: 0.95rem;
        }
        .user-feedback {
            background: #f8f9fa;
            border: 1px solid #dee2e6;
            border-radius: 10px;
            padding: 2rem;
            margin: 3rem 0;
        }
        .user-feedback h3 {
            margin-top: 0;
        }
        .rating-form, .comment-form {
            display: grid;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ffd166;
            cursor: pointer;
        }
        .stars .star {
            transition: transform 0.2s;
        }
        .stars .star:hover {
            transform: scale(1.2);
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-group label {
            font-weight: 600;
            color: #495057;
        }
        .form-group input, .form-group textarea, .form-group select {
            padding: 0.75rem;
            border: 1px solid #ced4da;
            border-radius: 6px;
            font-size: 1rem;
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .btn-submit {
            background: #2c5aa0;
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 6px;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
            justify-self: start;
        }
        .btn-submit:hover {
            background: #1a365d;
        }
        .site-footer {
            background: #1a365d;
            color: #cbd5e0;
            padding: 3rem 0 2rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h4 {
            color: #ffd166;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-section ul {
            list-style: none;
        }
        .footer-section ul li {
            margin-bottom: 0.75rem;
        }
        .footer-section a {
            color: #cbd5e0;
        }
        .footer-section a:hover {
            color: white;
            text-decoration: underline;
        }
        friend-link {
            display: block;
            padding: 1rem;
            background: #2d3748;
            border-radius: 6px;
            margin-bottom: 0.75rem;
            transition: background 0.3s;
        }
        friend-link:hover {
            background: #4a5568;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #2d3748;
            font-size: 0.9rem;
            color: #a0aec0;
        }
        .last-updated {
            font-style: italic;
            color: #ffd166;
            margin-bottom: 1rem;
        }
        @media (max-width: 992px) {
            .hero h1 { font-size: 2.8rem; }
            .article-body { padding: 2rem; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #1a365d;
                padding: 1rem;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
                border-top: 1px solid #2d3748;
            }
            .main-nav.active ul {
                display: flex;
            }
            .hero h1 { font-size: 2.4rem; }
            .hero p { font-size: 1.1rem; }
            .article-body h2 { font-size: 1.9rem; }
            .article-body h3 { font-size: 1.5rem; }
            .header-container { flex-wrap: wrap; }
        }
        @media (max-width: 480px) {
            .hero { padding: 3rem 1rem; }
            .hero h1 { font-size: 2rem; }
            .article-body { padding: 1.5rem; }
            .search-box { flex-direction: column; border-radius: 10px; }
            .search-box input, .search-box button { border-radius: 0; width: 100%; }
        }