* { 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;
            display: flex;
            flex-direction: column;
        }
        a { color: #0066cc; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #ff6600; }
        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, #0a2e5c 0%, #1a4a8f 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;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 900;
            color: white;
            text-decoration: none;
            font-family: 'Arial Black', sans-serif;
            letter-spacing: -1px;
            background: linear-gradient(to right, #00ccff, #ff3366);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            display: flex;
            align-items: center;
        }
        .logo i { margin-right: 10px; font-size: 2rem; color: #00ccff; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .main-nav a {
            color: #d0e5ff;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 0.5rem 0.3rem;
            border-bottom: 2px solid transparent;
        }
        .main-nav a:hover, .main-nav a.active {
            color: #fff;
            border-bottom-color: #ff6600;
        }
        .search-box {
            display: flex;
            background: rgba(255,255,255,0.15);
            border-radius: 30px;
            overflow: hidden;
            padding: 5px;
        }
        .search-box input {
            border: none;
            background: transparent;
            color: white;
            padding: 0.5rem 1rem;
            width: 220px;
            outline: none;
        }
        .search-box input::placeholder { color: #b0d0ff; }
        .search-box button {
            background: #ff6600;
            border: none;
            color: white;
            padding: 0.5rem 1.2rem;
            border-radius: 30px;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s;
        }
        .search-box button:hover { background: #ff8533; }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background: white;
            border-radius: 2px;
            transition: 0.3s;
        }
        .breadcrumb {
            padding: 1rem 0;
            background: #e9f0f8;
            font-size: 0.9rem;
            border-bottom: 1px solid #d0ddee;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin-left: 0.5rem;
            color: #888;
        }
        .breadcrumb a { color: #555; }
        .breadcrumb a:hover { color: #0066cc; }
        .content-main {
            flex: 1;
            padding: 2.5rem 0;
        }
        .article-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .article-grid { grid-template-columns: 1fr; }
        }
        .article-body {
            background: white;
            border-radius: 16px;
            padding: 2.5rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.06);
        }
        .article-body h1 {
            font-size: 2.8rem;
            color: #0a2e5c;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #ff6600;
            padding-bottom: 0.5rem;
        }
        .article-meta {
            display: flex;
            gap: 1.5rem;
            margin-bottom: 2rem;
            color: #666;
            font-size: 0.95rem;
        }
        .meta-item i { margin-right: 6px; color: #0066cc; }
        .article-intro {
            font-size: 1.25rem;
            color: #444;
            background: #f0f8ff;
            padding: 1.5rem;
            border-left: 5px solid #0066cc;
            border-radius: 0 10px 10px 0;
            margin-bottom: 2.5rem;
            line-height: 1.8;
        }
        .article-section {
            margin-bottom: 3rem;
        }
        .article-section h2 {
            font-size: 2rem;
            color: #1a4a8f;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #ccddee;
        }
        .article-section h3 {
            font-size: 1.5rem;
            color: #ff6600;
            margin: 1.8rem 0 1rem;
        }
        .article-section p {
            margin-bottom: 1.2rem;
            text-align: justify;
            color: #333;
        }
        .article-section b, .article-section strong { color: #0a2e5c; }
        .highlight-box {
            background: linear-gradient(135deg, #fff8e1, #ffecb3);
            border: 1px solid #ffd54f;
            border-radius: 10px;
            padding: 1.5rem;
            margin: 1.8rem 0;
        }
        .feature-img {
            width: 100%;
            border-radius: 12px;
            overflow: hidden;
            margin: 2rem 0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        }
        .feature-img img {
            width: 100%;
            height: auto;
            transition: transform 0.5s ease;
        }
        .feature-img:hover img { transform: scale(1.03); }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 0.8rem;
            font-size: 0.95rem;
        }
        .link-list {
            background: #f9f9f9;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .link-list ul { padding-left: 1.5rem; }
        .link-list li { margin-bottom: 0.8rem; }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            border-radius: 12px;
            padding: 1.8rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .sidebar-widget h3 {
            color: #0a2e5c;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ff6600;
            font-size: 1.4rem;
        }
        .rating-widget form, .comment-widget form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .rating-stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ffd700;
            margin: 0.5rem 0;
        }
        .rating-stars i { cursor: pointer; transition: color 0.2s; }
        .rating-stars i:hover { color: #ffaa00; }
        form input, form textarea, form select {
            padding: 0.8rem;
            border: 1px solid #ccddee;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
        }
        form textarea { min-height: 120px; resize: vertical; }
        form button {
            background: #0066cc;
            color: white;
            border: none;
            padding: 0.9rem;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
        }
        form button:hover { background: #0052a3; }
        .popular-links ul {
            list-style: none;
        }
        .popular-links li {
            padding: 0.8rem 0;
            border-bottom: 1px dashed #eee;
        }
        .popular-links li:last-child { border-bottom: none; }
        .popular-links a {
            display: flex;
            align-items: center;
            color: #333;
        }
        .popular-links a:hover { color: #ff6600; }
        .popular-links i {
            margin-right: 10px;
            color: #0066cc;
        }
        .footer-top {
            background: #0a2e5c;
            color: #d0e5ff;
            padding: 3rem 0;
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1.5rem;
            margin-bottom: 2rem;
        }
        .web-link {
            background: rgba(255,255,255,0.05);
            padding: 1rem;
            border-radius: 8px;
            transition: background 0.3s;
        }
        .web-link:hover {
            background: rgba(255,255,255,0.1);
        }
        .web-link a {
            color: #b0d0ff;
            display: block;
        }
        .web-link a:hover { color: #fff; }
        .site-footer {
            background: #061a36;
            color: #8a9db3;
            text-align: center;
            padding: 2rem 0;
            font-size: 0.9rem;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .social-links {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            font-size: 1.5rem;
        }
        .social-links a {
            color: #8a9db3;
            transition: color 0.3s;
        }
        .social-links a:hover { color: #ff6600; }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            .main-nav {
                width: 100%;
                order: 3;
                margin-top: 1rem;
                display: none;
            }
            .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: 1rem;
            }
            .hamburger { display: flex; }
            .search-box { order: 2; margin-top: 1rem; width: 100%; }
            .search-box input { flex: 1; }
            .article-body { padding: 1.5rem; }
            .article-body h1 { font-size: 2.2rem; }
            .article-meta { flex-direction: column; gap: 0.5rem; }
        }