* { 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: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { color: #2c6ecb; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #e94b3c; }
        img { max-width: 100%; height: auto; display: block; }
        .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        .site-header {
            background: linear-gradient(90deg, #1a2980 0%, #26d0ce 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-family: 'Arial Black', sans-serif;
            font-size: 2rem;
            font-weight: 900;
            color: #fff;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
            letter-spacing: -1px;
        }
        .my-logo span { color: #4dffea; }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0;
            border-bottom: 2px solid transparent;
        }
        .desktop-nav a:hover {
            border-bottom-color: #4dffea;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: #1a2980;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
        }
        .mobile-nav.active { display: flex; }
        .mobile-nav ul { list-style: none; }
        .mobile-nav li { margin: 1rem 0; }
        .mobile-nav a { color: white; font-size: 1.2rem; }
        .breadcrumb {
            background: #eef2f7;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb a { color: #555; }
        .breadcrumb a:hover { color: #1a2980; }
        main { flex: 1; padding: 2rem 0; }
        .article-header { text-align: center; margin-bottom: 3rem; }
        h1 {
            font-size: 3.2rem;
            color: #1a2980;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            color: #666;
            font-size: 0.95rem;
            margin-bottom: 1.5rem;
        }
        .article-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .article-content { grid-template-columns: 1fr; }
        }
        .content-body {
            background: white;
            padding: 2.5rem;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
        }
        h2 { color: #26a269; margin: 2.5rem 0 1.2rem; font-size: 2.2rem; border-left: 5px solid #26a269; padding-left: 1rem; }
        h3 { color: #1a73e8; margin: 2rem 0 1rem; font-size: 1.8rem; }
        h4 { color: #e94b3c; margin: 1.5rem 0 0.8rem; font-size: 1.4rem; }
        p { margin-bottom: 1.5rem; text-align: justify; }
        .highlight { background: #fff9e6; padding: 1.5rem; border-left: 4px solid #ffc107; margin: 1.5rem 0; border-radius: 0 8px 8px 0; }
        .feature-img {
            width: 100%;
            border-radius: 12px;
            margin: 2rem 0;
            border: 5px solid #e4e8f0;
        }
        .link-box {
            background: #f0f7ff;
            padding: 1.2rem;
            border-radius: 10px;
            margin: 1.5rem 0;
            border: 1px dashed #2c6ecb;
        }
        .link-box ul { list-style-position: inside; color: #555; }
        .link-box li { margin: 0.5rem 0; }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .widget h3 { font-size: 1.4rem; margin-top: 0; }
        .search-form { display: flex; margin-top: 1rem; }
        .search-form input {
            flex: 1;
            padding: 0.8rem;
            border: 2px solid #ccc;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
        }
        .search-form button {
            background: #1a2980;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover { background: #26d0ce; }
        .rating-widget .stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 1.8rem;
            color: #ffc107;
        }
        .rating-form { margin-top: 1rem; }
        .rating-form select, .comment-form textarea, .comment-form input {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 1px solid #ccc;
            border-radius: 8px;
        }
        .rating-form button, .comment-form button {
            background: #e94b3c;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 8px;
            cursor: pointer;
            width: 100%;
            font-weight: bold;
            transition: background 0.3s;
        }
        .rating-form button:hover, .comment-form button:hover { background: #c23a2d; }
        .comment-list { margin-top: 1.5rem; }
        .comment { border-bottom: 1px solid #eee; padding: 1rem 0; }
        .comment-author { font-weight: bold; color: #1a2980; }
        .comment-date { font-size: 0.85rem; color: #888; }
        .site-footer {
            background: #1a2980;
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 { color: #4dffea; margin-bottom: 1.2rem; }
        friend-link {
            display: block;
            padding: 0.5rem 0;
            color: #ccc;
            border-bottom: 1px dotted rgba(255,255,255,0.1);
        }
        friend-link:hover { color: #4dffea; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            .desktop-nav { display: none; }
            .mobile-toggle { display: block; }
            .content-body { padding: 1.5rem; }
        }