* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        h1, h2, h3, h4 { color: #1a365d; margin-bottom: 1rem; font-weight: 700; line-height: 1.2; }
        h1 { font-size: 2.8rem; margin-top: 1.5rem; }
        h2 { font-size: 2.2rem; margin-top: 2.5rem; padding-bottom: 0.5rem; border-bottom: 2px solid #e2e8f0; }
        h3 { font-size: 1.8rem; margin-top: 2rem; color: #2d3748; }
        h4 { font-size: 1.4rem; margin-top: 1.5rem; color: #4a5568; }
        p { margin-bottom: 1.5rem; font-size: 1.125rem; }
        a { color: #2b6cb0; text-decoration: none; transition: color 0.2s; }
        a:hover { color: #1a202c; text-decoration: underline; }
        strong { color: #2d3748; }
        .lead { font-size: 1.3rem; color: #4a5568; font-weight: 300; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 30px 0;
        }
        @media (max-width: 992px) {
            .main-grid { grid-template-columns: 1fr; }
        }
        .site-header {
            background: linear-gradient(135deg, #1a365d 0%, #2d3748 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-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            color: #fff;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i { color: #38b2ac; }
        .my-logo:hover { text-decoration: none; color: #cbd5e0; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .main-nav a {
            color: #cbd5e0;
            font-weight: 600;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
        }
        .main-nav a:hover, .main-nav a.active {
            color: white;
            border-bottom-color: #38b2ac;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: #2d3748;
                padding: 20px;
                transform: translateY(-100%);
                opacity: 0;
                visibility: hidden;
                transition: all 0.3s ease;
            }
            .main-nav.active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 15px;
            }
        }
        .breadcrumb {
            background: #edf2f7;
            padding: 12px 0;
            font-size: 0.9rem;
            margin-bottom: 20px;
        }
        .breadcrumb a { color: #4a5568; }
        .breadcrumb a:hover { color: #1a365d; }
        .breadcrumb span { color: #718096; }
        .search-box {
            background: #fff;
            padding: 25px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin-bottom: 30px;
        }
        .search-form {
            display: flex;
            gap: 10px;
        }
        .search-input {
            flex-grow: 1;
            padding: 15px;
            border: 2px solid #e2e8f0;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .search-input:focus {
            outline: none;
            border-color: #38b2ac;
        }
        .search-btn {
            background: #38b2ac;
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s;
        }
        .search-btn:hover { background: #2c9c96; }
        .article-content {
            background: white;
            padding: 40px;
            border-radius: 12px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.06);
        }
        .article-meta {
            color: #718096;
            font-size: 0.95rem;
            margin-bottom: 2rem;
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
        }
        .article-meta i { margin-right: 5px; }
        .featured-image {
            margin: 2.5rem 0;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .caption {
            text-align: center;
            font-style: italic;
            color: #718096;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .highlight-box {
            background: linear-gradient(to right, #e6fffa, #ebf8ff);
            border-left: 5px solid #38b2ac;
            padding: 25px;
            margin: 2.5rem 0;
            border-radius: 0 10px 10px 0;
        }
        .related-links {
            background: #f7fafc;
            padding: 20px;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .related-links h4 { margin-top: 0; }
        .related-links ul { list-style-position: inside; color: #4a5568; }
        .related-links li { margin-bottom: 8px; }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .sidebar-widget h3 {
            font-size: 1.5rem;
            margin-top: 0;
            padding-bottom: 10px;
            border-bottom: 2px solid #e2e8f0;
        }
        .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .form-group { display: flex; flex-direction: column; }
        .form-group label { margin-bottom: 5px; font-weight: 600; color: #4a5568; }
        .form-control {
            padding: 12px;
            border: 2px solid #e2e8f0;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-control:focus { outline: none; border-color: #38b2ac; }
        textarea.form-control { min-height: 120px; resize: vertical; }
        .submit-btn {
            background: #1a365d;
            color: white;
            border: none;
            padding: 15px;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: background 0.3s;
            align-self: flex-start;
        }
        .submit-btn:hover { background: #2d3748; }
        .star-rating {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            color: #e2e8f0;
            cursor: pointer;
        }
        .star-rating .star:hover,
        .star-rating .star.active { color: #f6ad55; }
        .site-footer {
            background: #1a202c;
            color: #cbd5e0;
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-widget h4 {
            color: white;
            margin-top: 0;
            font-size: 1.3rem;
        }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a { color: #a0aec0; }
        .footer-links a:hover { color: white; }
        friend-link {
            display: block;
            background: #2d3748;
            padding: 15px;
            border-radius: 6px;
            margin: 10px 0;
            font-weight: 600;
        }
        friend-link a { color: #38b2ac; }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #4a5568;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        .text-center { text-align: center; }
        .mt-4 { margin-top: 2rem; }
        .mb-4 { margin-bottom: 2rem; }
        .emoji { font-size: 1.2em; }