:root {
            --primary-blue: #1a3c8b;
            --secondary-gold: #e6b220;
            --accent-red: #c8102e;
            --light-gray: #f5f7fa;
            --dark-gray: #2d3748;
            --text-color: #333;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --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: 1.6;
            color: var(--text-color);
            background-color: #fff;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        ul {
            list-style: none;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-blue) 0%, #0d2565 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo span {
            color: var(--secondary-gold);
        }
        .logo i {
            font-size: 2rem;
        }
        .desktop-nav ul {
            display: flex;
            gap: 2rem;
        }
        .desktop-nav a {
            font-weight: 600;
            font-size: 1rem;
            padding: 0.5rem 0;
            position: relative;
            transition: var(--transition);
        }
        .desktop-nav a:hover {
            color: var(--secondary-gold);
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--secondary-gold);
            transition: width 0.3s ease;
        }
        .desktop-nav a:hover::after {
            width: 100%;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .mobile-nav {
            position: fixed;
            top: 0;
            right: -100%;
            height: 100vh;
            width: 280px;
            background: var(--primary-blue);
            z-index: 1001;
            padding: 2rem;
            transition: right 0.4s ease;
            box-shadow: -5px 0 15px rgba(0,0,0,0.1);
        }
        .mobile-nav.active {
            right: 0;
        }
        .mobile-nav ul {
            margin-top: 3rem;
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .mobile-nav a {
            font-size: 1.2rem;
            display: block;
            padding: 0.8rem 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .close-menu {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--light-gray);
            padding: 1rem 0;
            margin-bottom: 2rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 0.5rem;
            color: #666;
        }
        .breadcrumb a:hover {
            color: var(--primary-blue);
            text-decoration: underline;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            max-width: 100%;
        }
        .article-header {
            margin-bottom: 2.5rem;
        }
        .article-header h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            color: var(--primary-blue);
            margin-bottom: 1rem;
        }
        .meta-info {
            display: flex;
            gap: 1.5rem;
            color: #666;
            font-size: 0.95rem;
            margin-bottom: 1.5rem;
        }
        .meta-info i {
            margin-right: 0.5rem;
            color: var(--secondary-gold);
        }
        .featured-image {
            width: 100%;
            height: 400px;
            object-fit: cover;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-blue);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--light-gray);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--dark-gray);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #444;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            line-height: 1.7;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: var(--dark-gray);
            background: var(--light-gray);
            padding: 1.5rem;
            border-left: 4px solid var(--secondary-gold);
            border-radius: 0 8px 8px 0;
            margin: 2rem 0;
        }
        strong {
            color: var(--primary-blue);
            font-weight: 700;
        }
        em {
            color: var(--accent-red);
            font-style: italic;
        }
        .highlight-box {
            background: linear-gradient(to right, #f0f4ff, #e6eeff);
            border: 1px solid #ccd9ff;
            border-radius: 10px;
            padding: 1.8rem;
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .tip {
            background-color: #fff9e6;
            border-left: 4px solid var(--secondary-gold);
            padding: 1.2rem;
            margin: 1.5rem 0;
            border-radius: 0 5px 5px 0;
        }
        .tip i {
            color: var(--secondary-gold);
            margin-right: 0.5rem;
        }
        ul.content-list {
            list-style: disc;
            margin-left: 1.5rem;
            margin-bottom: 1.5rem;
        }
        ul.content-list li {
            margin-bottom: 0.8rem;
        }
        .btn {
            display: inline-block;
            background: var(--primary-blue);
            color: white;
            padding: 0.8rem 1.8rem;
            border-radius: 6px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            background: #0d2565;
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(26, 60, 139, 0.3);
        }
        .btn-gold {
            background: var(--secondary-gold);
            color: var(--dark-gray);
        }
        .btn-gold:hover {
            background: #d19d1d;
        }
        .search-widget {
            background: var(--light-gray);
            padding: 1.5rem;
            border-radius: 10px;
            margin-bottom: 2rem;
        }
        .search-widget h3 {
            margin-top: 0;
        }
        .search-form {
            display: flex;
            margin-top: 1rem;
        }
        .search-form input {
            flex: 1;
            padding: 0.9rem;
            border: 2px solid #ccc;
            border-radius: 6px 0 0 6px;
            font-size: 1rem;
        }
        .search-form button {
            background: var(--primary-blue);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 6px 6px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: #0d2565;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background: var(--light-gray);
            border-radius: 10px;
            padding: 1.5rem;
            box-shadow: var(--shadow);
        }
        .widget h3 {
            color: var(--primary-blue);
            margin-top: 0;
            padding-bottom: 0.8rem;
            border-bottom: 2px solid #ddd;
            margin-bottom: 1.2rem;
        }
        .related-links ul {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .related-links a {
            display: block;
            padding: 0.8rem;
            background: white;
            border-radius: 6px;
            transition: var(--transition);
        }
        .related-links a:hover {
            background: var(--primary-blue);
            color: white;
            transform: translateX(5px);
        }
        .related-links i {
            margin-right: 0.8rem;
            color: var(--secondary-gold);
        }
        .user-interaction {
            margin: 3rem 0;
            padding: 2.5rem;
            background: #f8f9fa;
            border-radius: 12px;
            border: 1px solid #dee2e6;
        }
        .rating-form, .comment-form {
            margin-top: 1.5rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star.active,
        .star:hover {
            color: var(--secondary-gold);
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark-gray);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.9rem;
            border: 2px solid #ccc;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary-blue);
            outline: none;
        }
        .site-footer {
            background: var(--dark-gray);
            color: #ddd;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }
        .footer-logo span {
            color: var(--secondary-gold);
        }
        friend-link {
            display: block;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
        }
        friend-link h4 {
            color: #fff;
            margin-bottom: 1rem;
        }
        friend-link ul {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        friend-link a {
            color: #aaa;
            transition: color 0.3s;
        }
        friend-link a:hover {
            color: var(--secondary-gold);
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .mobile-menu-btn {
                display: block;
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.4rem;
            }
            .featured-image {
                height: 250px;
            }
            .main-content {
                gap: 2rem;
            }
            .user-interaction {
                padding: 1.5rem;
            }
            .footer-container {
                grid-template-columns: 1fr;
            }
        }