:root {
            --ucl-blue: #0037a1;
            --ucl-silver: #d4d4d4;
            --ucl-gold: #ffd700;
            --ucl-black: #111;
            --ucl-white: #f8f9fa;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --border-radius: 8px;
            --shadow: 0 4px 12px rgba(0, 55, 161, 0.1);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: var(--ucl-white);
            max-width: 1600px;
            margin: 0 auto;
        }
        a {
            color: var(--ucl-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #002366;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            padding: 0 var(--spacing-sm);
        }
        .site-header {
            background: linear-gradient(135deg, var(--ucl-black) 0%, var(--ucl-blue) 100%);
            color: var(--ucl-white);
            padding: var(--spacing-sm) 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--ucl-gold);
            text-transform: uppercase;
            letter-spacing: 2px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--ucl-white);
        }
        .my-logo:hover {
            color: var(--ucl-white);
            text-decoration: none;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: var(--spacing-md);
        }
        .main-nav a {
            color: var(--ucl-silver);
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--ucl-gold);
            text-decoration: none;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 3px;
            background: var(--ucl-gold);
            bottom: 0;
            left: 0;
            transition: var(--transition);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: var(--ucl-white);
            cursor: pointer;
        }
        .breadcrumb {
            padding: var(--spacing-sm);
            background-color: #e9ecef;
            font-size: 0.9rem;
            margin-bottom: var(--spacing-md);
        }
        .breadcrumb a {
            color: #666;
        }
        .breadcrumb span {
            color: #999;
        }
        .search-box {
            max-width: 600px;
            margin: var(--spacing-lg) auto;
            padding: 0 var(--spacing-sm);
        }
        .search-form {
            display: flex;
            box-shadow: var(--shadow);
            border-radius: 50px;
            overflow: hidden;
        }
        .search-form input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1rem;
            outline: none;
        }
        .search-form button {
            background-color: var(--ucl-blue);
            color: white;
            border: none;
            padding: 0 2rem;
            cursor: pointer;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #002366;
        }
        .article-main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: var(--spacing-lg);
            padding: var(--spacing-sm);
        }
        @media (max-width: 1024px) {
            .article-main {
                grid-template-columns: 1fr;
            }
        }
        .content-area {
            background: white;
            padding: var(--spacing-lg);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar {
            background: #f8f9fa;
            padding: var(--spacing-md);
            border-radius: var(--border-radius);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar h3 {
            color: var(--ucl-blue);
            border-bottom: 3px solid var(--ucl-gold);
            padding-bottom: 0.5rem;
            margin-bottom: var(--spacing-md);
        }
        .sidebar ul {
            list-style: none;
        }
        .sidebar li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed #ddd;
        }
        .sidebar a {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .sidebar a:hover {
            color: var(--ucl-blue);
        }
        .sidebar i {
            color: #999;
            font-size: 0.9rem;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--ucl-blue);
            margin-bottom: var(--spacing-sm);
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: var(--ucl-black);
            margin-top: var(--spacing-lg);
            margin-bottom: var(--spacing-sm);
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--ucl-silver);
        }
        h3 {
            font-size: 1.6rem;
            color: #444;
            margin-top: var(--spacing-md);
            margin-bottom: var(--spacing-xs);
        }
        h4 {
            font-size: 1.3rem;
            color: #666;
            margin-top: var(--spacing-sm);
            margin-bottom: var(--spacing-xs);
        }
        .article-meta {
            color: #666;
            font-style: italic;
            margin-bottom: var(--spacing-md);
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .article-hero {
            margin: var(--spacing-md) 0;
            border-radius: var(--border-radius);
            overflow: hidden;
            position: relative;
        }
        .article-hero img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
        }
        .hero-caption {
            position: absolute;
            bottom: 0;
            background: rgba(0,0,0,0.7);
            color: white;
            width: 100%;
            padding: 1rem;
            font-size: 0.9rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            color: var(--ucl-blue);
            font-weight: 600;
            margin-bottom: var(--spacing-md);
            line-height: 1.5;
        }
        .highlight {
            background-color: rgba(255, 215, 0, 0.2);
            border-left: 5px solid var(--ucl-gold);
            padding: var(--spacing-sm);
            margin: var(--spacing-md) 0;
            font-style: italic;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--spacing-sm);
            margin: var(--spacing-md) 0;
        }
        .stat-card {
            background: #f1f7ff;
            padding: var(--spacing-sm);
            border-radius: var(--border-radius);
            text-align: center;
            border-top: 4px solid var(--ucl-blue);
        }
        .stat-card h4 {
            color: var(--ucl-blue);
            margin: 0;
        }
        .stat-card p {
            font-size: 2rem;
            font-weight: bold;
            color: var(--ucl-black);
            margin: 0.5rem 0;
        }
        .inline-link {
            font-weight: 600;
            color: var(--ucl-blue);
            border-bottom: 1px dotted var(--ucl-blue);
        }
        .inline-link:hover {
            border-bottom-style: solid;
        }
        .interaction-section {
            margin-top: var(--spacing-lg);
            padding-top: var(--spacing-md);
            border-top: 2px solid var(--ucl-silver);
        }
        .rating-widget {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: var(--spacing-md);
            flex-wrap: wrap;
        }
        .stars {
            display: flex;
            gap: 5px;
        }
        .star {
            font-size: 1.8rem;
            color: #ccc;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--ucl-gold);
        }
        .comment-form, .rating-form {
            background: #f9f9f9;
            padding: var(--spacing-md);
            border-radius: var(--border-radius);
            margin-bottom: var(--spacing-md);
        }
        .form-group {
            margin-bottom: var(--spacing-sm);
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
        }
        .form-group textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background-color: var(--ucl-blue);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: var(--border-radius);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background-color: #002366;
        }
        .site-footer {
            background-color: var(--ucl-black);
            color: var(--ucl-silver);
            padding: var(--spacing-lg) var(--spacing-sm);
            margin-top: var(--spacing-lg);
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--spacing-lg);
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--ucl-gold);
            margin-bottom: var(--spacing-sm);
            display: block;
        }
        friend-link {
            display: block;
            margin: 0.5rem 0;
        }
        friend-link a {
            color: var(--ucl-silver);
        }
        friend-link a:hover {
            color: var(--ucl-gold);
        }
        .copyright {
            text-align: center;
            padding-top: var(--spacing-md);
            margin-top: var(--spacing-md);
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.7rem; }
            .main-nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: var(--ucl-black);
                position: absolute;
                top: 100%;
                left: 0;
                padding: var(--spacing-sm);
                box-shadow: var(--shadow);
            }
            .main-nav.active ul {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .content-area, .sidebar {
                padding: var(--spacing-md);
            }
            .article-main {
                gap: var(--spacing-md);
            }
        }