:root {
            --primary-color: #2D3748;
            --secondary-color: #4A5568;
            --accent-color: #3182CE;
            --bg-color: #FAFAFA;
            --card-bg: #FFFFFF;
            --text-primary: #2D3748;
            --text-secondary: #718096;
            --text-muted: #A0AEC0;
            --border-color: #EDF2F7;
            --shadow-light: 0 1px 3px rgba(0,0,0,0.04);
            --shadow-medium: 0 4px 6px rgba(0,0,0,0.06);
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
        }
        
        .dark-mode {
            --primary-color: #E2E8F0;
            --secondary-color: #A0AEC0;
            --accent-color: #63B3ED;
            --bg-color: #1A202C;
            --card-bg: #2D3748;
            --text-primary: #F7FAFC;
            --text-secondary: #CBD5E0;
            --text-muted: #718096;
            --border-color: #4A5568;
            --shadow-light: 0 1px 3px rgba(0,0,0,0.3);
            --shadow-medium: 0 4px 6px rgba(0,0,0,0.4);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
        }
        
        body {
            line-height: 1.6;
            color: var(--text-primary);
            background: var(--bg-color);
            font-size: 16px;
            transition: background-color 0.3s ease, color 0.3s ease;
        }
        
        /* 头部导航 */
        .reader-header {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border-color);
            padding: 12px 0;
            box-shadow: var(--shadow-light);
            position: sticky;
            top: 0;
            z-index: 99;
            transition: all 0.3s ease;
        }
        .header-inner {
            max-width: 850px;
            margin: 0 auto;
            padding: 0 15px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo-container {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }
        .logo-img {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            border: 1px solid var(--border-color);
            background: #CC3366;
            object-fit: cover;
        }
        .logo-text {
            font-size: 18px;
            font-weight: 600;
            color: var(--primary-color);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-link {
            font-size: 14px;
            color: var(--text-secondary);
            text-decoration: none;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: all 0.2s;
        }
        
        .nav-link:hover {
            color: var(--accent-color);
            background: rgba(72, 187, 120, 0.1);
        }
        
        .theme-toggle {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            border: 1px solid var(--border-color);
            background: var(--card-bg);
            color: var(--text-secondary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s;
            font-size: 16px;
        }
        
        .theme-toggle:hover {
            color: var(--accent-color);
            border-color: var(--accent-color);
        }
        .login-btn {
            padding: 6px 10px;
            background: none;
            color: var(--text-secondary);
            border: none;
            border-radius: var(--radius-sm);
            font-size: 14px;
            cursor: pointer;
            transition: background-color 0.2s;
        }
        .login-btn:hover {
            color: var(--accent-color);
            background: rgba(72, 187, 120, 0.1);
        }
        .user-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            position: relative;
        }
        .user-avatar {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--border-color);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-color);
            font-weight: 600;
            cursor: pointer;
        }
        .user-dropdown {
            position: absolute;
            top: 40px;
            right: 0;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-medium);
            padding: 8px 0;
            cursor: pointer;
            width: 160px;
            display: none;
            z-index: 100;
        }
        .user-menu:hover .user-dropdown {
            display: block;
        }
        .dropdown-item {
            display: block;
            padding: 8px 16px;
            font-size: 13px;
            color: var(--text-secondary);
            text-decoration: none;
            transition: background-color 0.2s;
        }
        .dropdown-item:hover {
            background: rgba(72, 187, 120, 0.1);
            color: var(--accent-color);
        }
        .dropdown-divider {
            height: 1px;
            background: var(--border-color);
            margin: 8px 0;
        }

        /* 主要内容容器 */
        .container {
            max-width: 850px;
            margin: 0 auto;
            padding: 30px 20px;
        }
        
        .article-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-medium);
            padding: 30px;
            border: 1px solid var(--border-color);
            margin-bottom: 30px;
        }
        
        .article-header {
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 20px;
            margin-bottom: 30px;
        }
        
        .article-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--primary-color);
            margin-bottom: 15px;
            text-align: justify;
        }
        
        .featured-badge {
            display: inline-flex;
            align-items: center;
            background: rgba(255, 215, 0, 0.1);
            color: #FFD700;
            padding: 4px 8px;
            border-radius: 12px;
            font-size: 12px;
            margin-left: 10px;
            vertical-align: middle;
        }
        
        .article-meta {
            gap: 15px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .article-meta span {
            padding-right: 10px;
        }
        
        .article-content {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-primary);
            text-align: justify;
        }
        
        .article-content h1,
        .article-content h2,
        .article-content h3 {
            font-size: 1rem;
            line-height: 1.4;
            font-weight: 700;
            margin-bottom: 10px;
        }        
        
        .article-content img {
        max-width: 100% !important;
        height: auto !important;
        display: block;
        margin: 10px auto;
        box-sizing: border-box;
        border-radius: var(--radius-sm);
        }
        
        .article-content p {
            margin: 0 0 1em;
            line-height: 1.7;
        }
        
        .article-content a {
            color: var(--accent-color);
            text-decoration: none;
            border-bottom: 1px dotted currentColor;
        }
        
        .article-content a:hover {
            border-bottom-style: solid;
        }
        
        .article-content h2{
            font-size: 15px;
        }
        
        .article-content ol, .article-content ul{
            padding-left:0;
            margin-left:25px;
        }
        
        .article-content p:has(> br:only-child) {
            display: none;
        }
        
        /* 操作按钮 */
        .article-actions {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
            flex-wrap: wrap;
            gap: 10px;
        }
        
        .action-btn {
            display: inline-flex;
            align-items: center;
            gap: 3px;
            padding: 2px 5px;
            background: rgba(49, 130, 206, 0.1);
            border: 1px solid rgba(49, 130, 206, 0.3);
            border-radius: var(--radius-sm);
            color: var(--accent-color);
            text-decoration: none;
            font-size: 12px;
            cursor: pointer;
            transition: all 0.2s;
        }
        
        .action-btn:hover {
            background: rgba(49, 130, 206, 0.2);
            transform: translateY(-1px);
        }
        
        .btn-primary {
            background: var(--accent-color);
            color: white;
            border-color: var(--accent-color);
        }
        
        .btn-primary:hover {
            background: #2B6CB0;
        }
        
        .action-buttons {
            display: flex;
            gap: 10px;
        }
        
        /* 广告位 */
        .advertisement {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            padding: 0;
            margin: 30px 0;
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: var(--shadow-light);
        }
        
        .ad-link {
            display: block;
            text-decoration: none;
            color: inherit;
        }
        
        .ad-image {
            width: 100%;
            height: auto;
            display: block;
        }
        
        .ad-caption {
            padding: 15px;
            text-align: center;
            font-size: 14px;
            color: var(--text-secondary);
            border-top: 1px solid var(--border-color);
            background: rgba(0, 0, 0, 0.02);
        }
        
        /* 相关文章 */
        .related-articles {
            margin-top: 40px;
        }
        
        .section-title {
            font-size: 20px;
            font-weight: 600;
            color: var(--primary-color);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent-color);
        }
        
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
            margin-top: 20px;
        }
        
        .article-item {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            padding: 20px;
            border: 1px solid var(--border-color);
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
            display: block;
        }
        
        .article-item:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-medium);
            border-color: var(--accent-color);
        }
        
        .article-item-title {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--primary-color);
            text-align: justify;
        }
        
        .article-item-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            justify-content: space-between;
        }
        
        /* 过期提醒 */
        .article-expiry {
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
            margin-top: 20px;
            padding: 10px;
            background: rgba(255, 193, 7, 0.1);
            border-radius: var(--radius-sm);
        }
        
        /* 底部 */
        .reader-footer {
            background: var(--card-bg);
            border-top: 1px solid var(--border-color);
            padding: 30px 0;
            margin-top: 50px;
        }
        
        .footer-inner {
            max-width: 850px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 15px;
        }
        
        .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            justify-content: center;
        }
        
        .footer-link {
            font-size: 13px;
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.2s;
        }
        
        .footer-link:hover {
            color: var(--accent-color);
            text-decoration: underline;
        }
        
        .copyright {
            font-size: 12px;
            color: var(--text-muted);
            text-align: center;
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .container {
                padding: 20px 10px 25px;
                max-width: 100%;
            }
            .header-inner {
                padding: 0 10px;
            }
            
            .logo-text {
                font-size: 16px;
            }
            
            .header-actions {
                gap: 8px;
            }
            
            .nav-link {
                font-size: 13px;
                padding: 5px 8px;
            }
            
            .login-btn {
                padding: 2px;
                font-size: 13px;
            }
            
            .article-card {
                padding: 20px;
            }
            
            .article-title {
                font-size: 24px;
            }
            
            .articles-grid {
                grid-template-columns: 1fr;
            }
            
            .article-actions {
            
                align-items: stretch;
            }
            
            .action-buttons {
                justify-content: center;
            }
            
            .header-inner {
                padding: 0 15px;
            }
            
            .logo-text {
                font-size: 16px;
            }
        }
        
        @media (max-width: 480px) {
            .logo-text {
                display: none;
            }
            
            .article-title {
                font-size: 22px;
            }
            
            .article-meta {
                flex-direction: column;
                gap: 8px;
            }
        }
        
        /* 工具类 */
        .text-center {
            text-align: center;
        }
        
        .mt-20 {
            margin-top: 20px;
        }
        
        .mb-20 {
            margin-bottom: 20px;
        }
        
        .py-10 {
            padding-top: 10px;
            padding-bottom: 10px;
        }
        
        /* 精选星星样式增强 */
        .featured-badge {
            display: inline-flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(255,215,0,0.15), rgba(255,215,0,0.25));
            color: #FFD700;
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 13px;
            margin-left: 12px;
            vertical-align: middle;
            border: 1px solid rgba(255,215,0,0.3);
            font-weight: 500;
            animation: subtleGlow 2s infinite alternate;
        }
        
        @keyframes subtleGlow {
            0% { box-shadow: 0 0 5px rgba(255,215,0,0.3); }
            100% { box-shadow: 0 0 10px rgba(255,215,0,0.6); }
        }
        
        /* 精选按钮样式 */
        .featured-btn {
            background: rgba(255,215,0,0.1);
            border-color: rgba(255,215,0,0.3);
            color: #FFD700;
        }
        
        .featured-btn:hover {
            background: rgba(255,215,0,0.2);
            border-color: rgba(255,215,0,0.5);
        }