* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
        }
        a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style-position: inside; margin-left: 1.2em; }
        button, input, textarea { font-family: inherit; }
        h1 { font-size: 2.8rem; color: #1a365d; margin-bottom: 1.5rem; line-height: 1.2; }
        h2 { font-size: 2.2rem; color: #2d3748; margin: 2.5rem 0 1.2rem; padding-bottom: 0.5rem; border-bottom: 3px solid #4299e1; }
        h3 { font-size: 1.7rem; color: #4a5568; margin: 2rem 0 1rem; }
        p { margin-bottom: 1.5rem; font-size: 1.1rem; }
        .lead { font-size: 1.3rem; color: #4a5568; font-weight: 500; }
        .highlight { background-color: #fffacd; padding: 0.2rem 0.4rem; border-radius: 3px; }
        .keyword { color: #2b6cb0; font-weight: bold; }
        .emoji { font-size: 1.2em; margin-right: 0.3rem; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
        .site-header {
            background: linear-gradient(90deg, #1a365d 0%, #2d3748 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
        }
        .logo i { color: #4299e1; margin-right: 10px; }
        .desktop-nav ul {
            display: flex;
            gap: 2rem;
        }
        .desktop-nav a {
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .desktop-nav a:hover { color: #90cdf4; }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #4299e1;
            transition: width 0.3s;
        }
        .desktop-nav a:hover::after { width: 100%; }
        .breadcrumb {
            background-color: #edf2f7;
            padding: 0.8rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb ul {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin: 0 10px;
            color: #718096;
        }
        .breadcrumb a:hover { color: #2b6cb0; text-decoration: underline; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background: #2d3748;
            padding: 1rem;
            flex-direction: column;
            gap: 1rem;
            box-shadow: 0 5px 10px rgba(0,0,0,0.2);
        }
        .mobile-nav.active { display: flex; }
        .mobile-nav a {
            color: white;
            padding: 0.8rem;
            border-bottom: 1px solid #4a5568;
        }
        .mobile-nav a:hover { background-color: #4a5568; }
        .search-section {
            background-color: white;
            padding: 2rem 0;
            margin: 2rem 0;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            text-align: center;
        }
        .search-form {
            max-width: 600px;
            margin: 0 auto;
            display: flex;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid #cbd5e0;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
        }
        .search-input:focus { border-color: #4299e1; }
        .search-btn {
            background: linear-gradient(90deg, #4299e1, #3182ce);
            color: white;
            border: none;
            padding: 0 1.8rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s;
        }
        .search-btn:hover { background: linear-gradient(90deg, #3182ce, #2b6cb0); }
        main { padding: 3rem 0; }
        .article-header { text-align: center; margin-bottom: 3rem; }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 2rem;
            color: #718096;
            margin-top: 1rem;
            font-size: 0.95rem;
        }
        .content-section {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            margin-bottom: 2.5rem;
        }
        .image-wrapper {
            margin: 2.5rem 0;
            text-align: center;
        }
        .featured-img {
            border-radius: 10px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.15);
            max-width: 900px;
            margin: 0 auto;
        }
        .img-caption {
            font-style: italic;
            color: #718096;
            margin-top: 0.8rem;
            font-size: 0.9rem;
        }
        .user-interaction { margin: 3rem 0; }
        .rating-form, .comment-form {
            background: #f7fafc;
            padding: 2rem;
            border-radius: 10px;
            border: 1px solid #e2e8f0;
            margin-bottom: 2rem;
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 1.8rem;
            color: #cbd5e0;
            cursor: pointer;
        }
        .star-rating i:hover,
        .star-rating i.active { color: #f6ad55; }
        .form-group { margin-bottom: 1.5rem; }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #4a5568;
        }
        input, textarea {
            width: 100%;
            padding: 0.9rem;
            border: 1px solid #cbd5e0;
            border-radius: 5px;
            font-size: 1rem;
        }
        textarea { min-height: 150px; resize: vertical; }
        .submit-btn {
            background: linear-gradient(90deg, #38a169, #2f855a);
            color: white;
            border: none;
            padding: 0.9rem 2.5rem;
            border-radius: 50px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            transition: all 0.3s;
        }
        .submit-btn:hover {
            background: linear-gradient(90deg, #2f855a, #276749);
            transform: translateY(-2px);
            box-shadow: 0 5px 10px rgba(0,0,0,0.1);
        }
        .web-links-section {
            background: #edf2f7;
            padding: 2.5rem;
            border-radius: 10px;
            margin: 3rem 0;
        }
        .web-link {
            background: white;
            padding: 1rem 1.5rem;
            margin-bottom: 1rem;
            border-radius: 8px;
            border-left: 5px solid #4299e1;
            box-shadow: 0 3px 6px rgba(0,0,0,0.05);
            transition: transform 0.3s;
        }
        .web-link:hover {
            transform: translateX(5px);
            border-left-color: #2b6cb0;
        }
        .web-link a { color: #2d3748; font-weight: 500; }
        .web-link a:hover { color: #2b6cb0; }
        footer {
            background: #1a202c;
            color: #cbd5e0;
            padding: 3rem 0 1.5rem;
        }
        .footer-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; }
        .footer-logo { font-size: 1.8rem; font-weight: 800; color: white; margin-bottom: 1rem; }
        .footer-links h4 { color: white; margin-bottom: 1.2rem; font-size: 1.2rem; }
        .footer-links ul { list-style: none; }
        .footer-links li { margin-bottom: 0.7rem; }
        .footer-links a:hover { color: #90cdf4; }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #4a5568;
            font-size: 0.9rem;
            color: #a0aec0;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            .content-section { padding: 2rem; }
        }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .hamburger { display: block; }
            .header-container { padding: 0 15px; }
            .article-meta { flex-direction: column; gap: 0.5rem; align-items: center; }
            .search-form { flex-direction: column; }
            .search-input, .search-btn { border-radius: 50px; width: 100%; }
            .search-input { margin-bottom: 0.5rem; }
            .grid-2 { grid-template-columns: 1fr; }
            .content-section { padding: 1.5rem; }
        }