* { 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-color: #f8f9fa;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a { color: #0066cc; text-decoration: none; transition: color 0.3s; }
        a:hover { color: #e60012; }
        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(135deg, #0a2e5c 0%, #003366 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;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 900;
            color: white;
            text-transform: uppercase;
            letter-spacing: 1px;
            font-family: 'Arial Black', sans-serif;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .logo a span { color: #00a8ff; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #e0e0e0;
            font-weight: 600;
            padding: 0.5rem 0.75rem;
            border-radius: 4px;
        }
        .main-nav a:hover, .main-nav a:focus {
            background-color: rgba(255, 255, 255, 0.15);
            color: white;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #e9ecef;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #555; }
        .breadcrumb a:hover { color: #e60012; }
        .breadcrumb span { color: #777; }
        .main-content {
            flex: 1;
            padding: 2rem 0;
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding-bottom: 1.5rem;
            border-bottom: 3px solid #e60012;
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: #0a2e5c;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .meta-info {
            color: #666;
            font-style: italic;
        }
        .article-body {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .article-body { grid-template-columns: 1fr; }
        }
        .article-text {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.07);
        }
        .article-text h2 {
            color: #003366;
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #00a8ff;
            font-size: 1.8rem;
        }
        .article-text h3 {
            color: #e60012;
            margin: 1.8rem 0 0.8rem;
            font-size: 1.4rem;
        }
        .article-text p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .article-text ul, .article-text ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        .article-text li { margin-bottom: 0.5rem; }
        .highlight-box {
            background: linear-gradient(to right, #f0f8ff, #e6f7ff);
            border-left: 5px solid #0066cc;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .featured-image {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 800px;
        }
        .featured-image img {
            border-radius: 10px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
            border: 1px solid #ddd;
        }
        .img-caption {
            font-size: 0.95rem;
            color: #666;
            margin-top: 0.8rem;
            font-style: italic;
        }
        strong { color: #0a2e5c; }
        .keyword-link {
            font-weight: bold;
            color: #d90429;
            border-bottom: 1px dotted #d90429;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background: white;
            padding: 1.8rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .widget h3 {
            color: #003366;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #eee;
            font-size: 1.3rem;
        }
        .search-form input, .comment-form input, .comment-form textarea, .rating-form select {
            width: 100%;
            padding: 0.9rem;
            margin-bottom: 1rem;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 1rem;
        }
        .search-form button, .comment-form button, .rating-form button {
            background: linear-gradient(to right, #0066cc, #004c99);
            color: white;
            border: none;
            padding: 0.9rem 1.8rem;
            border-radius: 6px;
            font-weight: bold;
            cursor: pointer;
            width: 100%;
            transition: background 0.3s;
        }
        .search-form button:hover, .comment-form button:hover, .rating-form button:hover {
            background: linear-gradient(to right, #004c99, #003366);
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ffc107;
            margin: 1rem 0;
        }
        .site-footer {
            background: #1a1a1a;
            color: #ccc;
            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-logo { font-size: 2rem; font-weight: bold; color: white; }
        .footer-links h4 {
            color: white;
            margin-bottom: 1.2rem;
            font-size: 1.2rem;
        }
        .footer-links ul { list-style: none; }
        .footer-links li { margin-bottom: 0.8rem; }
        .footer-links a { color: #aaa; }
        .footer-links a:hover { color: #00a8ff; }
        friend-link {
            display: block;
            font-style: italic;
            color: #888;
            margin-top: 0.5rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #888;
        }
        @media (max-width: 768px) {
            .header-content { flex-wrap: wrap; }
            .hamburger { display: block; }
            .main-nav {
                display: none;
                width: 100%;
                order: 3;
                margin-top: 1rem;
            }
            .main-nav.active { display: block; }
            .main-nav ul { flex-direction: column; gap: 0; }
            .main-nav li { border-bottom: 1px solid rgba(255,255,255,0.1); }
            .main-nav a { display: block; padding: 0.8rem 0; }
            .article-header h1 { font-size: 2rem; }
            .article-text { padding: 1.5rem; }
            .featured-image { margin: 1.5rem auto; }
        }