:root {
            --primary: #4361ee;
            --secondary: #3f37c9;
            --accent: #4895ef;
            --light: #f8f9fa;
            --dark: #212529;
            --success: #4cc9f0;
            --warning: #f72585;
            --border-radius: 12px;
            --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        
        a {
            color: inherit;    
            text-decoration: none; 
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Noto Sans SC', 'Poppins', sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8fafc;
            overflow-x: hidden;
        }
        
        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            text-align: center;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            box-shadow: 0 4px 15px rgba(67, 97, 238, 0.4);
        }
        
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(67, 97, 238, 0.6);
        }
        
        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        
        .btn-outline:hover {
            background: var(--primary);
            color: white;
        }
        
        .section {
            padding: 60px 0;
        }
        
        /* Header Styles */
        header {
            background-color: white;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            padding: 15px 0;
        }
        
        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: relative;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .logo i {
            font-size: 2rem;
            color: var(--primary);
        }
        
        .logo h1 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--dark);
        }
        
        .nav-links {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        
        .nav-links a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        
        .nav-links a:after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--primary);
            transition: var(--transition);
            border-radius: 2px;
        }
        
        .nav-links a:hover {
            color: var(--primary);
        }
        
        .nav-links a:hover:after {
            width: 100%;
        }
        
        .auth-buttons {
            display: flex;
            gap: 15px;
        }
        
        .btn-login {
            background: white;
            border: 2px solid var(--primary);
            color: var(--primary);
            padding: 8px 20px;
        }
        
        .btn-login:hover {
            background: var(--primary);
            color: white;
        }
        
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            z-index: 1001;
        }
        
        /* Breadcrumb */
        .breadcrumb {
            background-color: #f1f5f9;
            padding: 20px 0;
            margin-top: 80px;
        }
        
        .breadcrumb-content {
            display: flex;
            align-items: center;
            font-size: 0.9rem;
        }
        
        .breadcrumb-content a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        
        .breadcrumb-content a:hover {
            text-decoration: underline;
        }
        
        .breadcrumb-content i {
            margin: 0 10px;
            color: #94a3b8;
            font-size: 0.8rem;
        }
        
        .breadcrumb-content span {
            color: #64748b;
        }
        
        /* News Detail */
        .news-detail {
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            overflow: hidden;
            padding: 40px;
            margin-top: 30px;
            margin-bottom: 50px;
        }
        
        .news-header {
            margin-bottom: 30px;
            text-align: center;
            border-bottom: 1px solid #f1f5f9;
            padding-bottom: 20px;
        }
        
        .news-detail-title {
            font-size: 2.2rem;
            margin-bottom: 20px;
            color: var(--dark);
            line-height: 1.3;
        }
        
        .news-detail-meta {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 20px;
            color: #64748b;
            font-size: 0.95rem;
            flex-wrap: wrap;
        }
        
        .news-detail-meta i {
            margin-right: 5px;
            color: var(--primary);
        }
        
        .news-detail-image {
            width: 100%;
            height: 450px;
            border-radius: var(--border-radius);
            overflow: hidden;
            margin: 30px auto;
            background-size: cover;
            background-position: center;
            background-image: url('https://images.unsplash.com/photo-1555066931-4365d14bab8c?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80');
        }
        
        .news-detail-content {
            line-height: 1.8;
            color: #334155;
            font-size: 1.05rem;
            max-width: 900px;
            margin: 0 auto;
        }
        
        .news-detail-content h2 {
            margin: 40px 0 20px;
            color: var(--dark);
            padding-bottom: 10px;
            border-bottom: 2px solid #f1f5f9;
        }
        
        .news-detail-content h3 {
            margin: 30px 0 15px;
            color: var(--dark);
        }
        
        .news-detail-content p {
            margin-bottom: 20px;
        }
        
        .news-detail-content blockquote {
            border-left: 4px solid var(--primary);
            background: #f8fafc;
            padding: 25px 30px;
            margin: 30px 0;
            font-style: italic;
            color: #475569;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        
        .news-detail-content ul, .news-detail-content ol {
            margin: 20px 0;
            padding-left: 25px;
        }
        
        .news-detail-content li {
            margin-bottom: 10px;
            padding-left: 10px;
        }
        
        .news-detail-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 30px 0;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            border-radius: var(--border-radius);
            overflow: hidden;
        }
        
        .news-detail-content th {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            text-align: left;
            padding: 15px;
            font-weight: 600;
        }
        
        .news-detail-content td {
            padding: 15px;
            border-bottom: 1px solid #f1f5f9;
        }
        
        .news-detail-content tr:nth-child(even) {
            background-color: #f8fafc;
        }
        
        .news-detail-content tr:hover {
            background-color: #f1f5f9;
        }
        
        .news-footer {
            margin-top: 50px;
            padding-top: 30px;
            border-top: 1px solid #f1f5f9;
        }
        
        .news-tags {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 30px;
        }
        
        .news-tags span {
            font-weight: 600;
            color: var(--dark);
            min-width: 60px;
        }
        
        .tag {
            display: inline-block;
            padding: 6px 18px;
            background: #f1f5f9;
            color: #475569;
            border-radius: 30px;
            font-size: 0.9rem;
            text-decoration: none;
            transition: var(--transition);
        }
        
        .tag:hover {
            background: var(--primary);
            color: white;
        }
        
        .news-navigation {
            display: flex;
            justify-content: space-between;
            margin-top: 30px;
            border-top: 1px solid #f1f5f9;
            padding-top: 30px;
        }
        
        .nav-link {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--dark);
            text-decoration: none;
            max-width: 45%;
            transition: var(--transition);
            padding: 10px;
            border-radius: var(--border-radius);
        }
        
        .nav-link:hover {
            background: #f8fafc;
            color: var(--primary);
        }
        
        .nav-link.prev i {
            order: -1;
        }
        
        /* Related News */
        .related-news {
            margin-top: 20px;
        }
        
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        
        .section-title {
            font-size: 2rem;
            margin-bottom: 15px;
            color: var(--dark);
            position: relative;
            display: inline-block;
        }
        
        .section-title:after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
        }
        
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 30px;
        }
        
        .related-item {
            background: white;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
        }
        
        .related-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .related-image {
            height: 180px;
            background-size: cover;
            background-position: center;
        }
        
        .related-content {
            padding: 20px;
        }
        
        .related-title {
            font-size: 1.1rem;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        
        .related-title a {
            color: var(--dark);
            text-decoration: none;
            transition: var(--transition);
        }
        
        .related-title a:hover {
            color: var(--primary);
        }
        
        .related-date {
            font-size: 0.85rem;
            color: #64748b;
        }
        
        /* Footer */
        footer {
            background: linear-gradient(135deg, #1a2a6c, #212529);
            color: white;
            padding: 70px 0 20px;
            margin-top: 60px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 50px;
        }
        
        .footer-column h3 {
            font-size: 1.3rem;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-column h3:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 12px;
        }
        
        .footer-links a {
            color: #b0b0b0;
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .footer-links a:hover {
            color: white;
            transform: translateX(5px);
        }
        
        .footer-links a i {
            color: var(--primary);
        }
        
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #b0b0b0;
            font-size: 0.9rem;
        }
        
        /* Responsive */
        @media (max-width: 992px) {
            .nav-links, .auth-buttons {
                display: none;
            }
            
            .hamburger {
                display: block;
            }
            
            .section {
                padding: 50px 0;
            }
            
            .news-detail {
                padding: 30px;
            }
            
            .news-detail-image {
                height: 350px;
            }
            
            /* 移动端菜单样式 - 确保包含首页链接 */
            .nav-links.active, .auth-buttons.active {
                display: flex;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: white;
                flex-direction: column;
                box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
                padding: 20px 0;
                z-index: 100;
            }
            
            .nav-links.active {
                list-style: none;
                gap: 0;
            }
            
            .nav-links.active li {
                width: 100%;
            }
            
            .nav-links.active a {
                display: block;
                padding: 15px 25px;
                border-bottom: 1px solid #f1f5f9;
            }
            
            .auth-buttons.active {
                padding: 20px 25px;
                justify-content: center;
            }
        }
        
        @media (max-width: 768px) {
            .news-detail-title {
                font-size: 1.8rem;
            }
            
            .news-detail-image {
                height: 280px;
            }
            
            .news-navigation {
                flex-direction: column;
                gap: 20px;
            }
            
            .nav-link {
                max-width: 100%;
            }
        }
        
        @media (max-width: 576px) {
            .logo h1 {
                font-size: 1.3rem;
            }
            
            .section-title {
                font-size: 1.8rem;
            }
            
            .news-detail {
                padding: 20px;
            }
            
            .news-detail-title {
                font-size: 1.6rem;
            }
            
            .news-detail-image {
                height: 200px;
            }
            
            .news-detail-meta {
                flex-direction: column;
                gap: 8px;
                align-items: center;
            }
        }