/* UI Style 7:深蓝/深灰 + 白色文字 + 蓝/黄点缀 | Layout F:强标签导向 */:root{--primary-bg:#1a2332;--secondary-bg:#2d3a4f;--accent-blue:#4a90e2;--accent-yellow:#f5c518;--text-primary:#ffffff;--text-secondary:#b8c5d6;--border-color:#3a4b5f;--card-bg:#253447;--hover-bg:#324357;}*{box-sizing:border-box;}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Microsoft YaHei",sans-serif;line-height:1.6;color:var(--text-primary);background:var(--primary-bg);}a{color:var(--accent-blue);text-decoration:none;transition:color 0.3s ease;}a:hover{color:var(--accent-yellow);}.container{max-width:1200px;margin:0 auto;padding:0 1rem;}/* 导航 */nav{background:var(--secondary-bg);box-shadow:0 2px 8px rgba(0,0,0,0.3);position:sticky;top:0;z-index:100;}nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:nowrap;justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;}nav li{flex:1 1 0;min-width:0;text-align:center;}nav a{display:block;padding:1rem 0.5rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--text-primary);font-weight:500;transition:background 0.3s ease,color 0.3s ease;}nav a:hover{background:var(--hover-bg);color:var(--accent-yellow);text-decoration:none;}/* 面包屑 */.breadcrumb{padding:0.75rem 0;font-size:0.875rem;color:var(--text-secondary);margin-bottom:1rem;}.breadcrumb a{color:var(--accent-blue);}.breadcrumb a:hover{color:var(--accent-yellow);}.breadcrumb span{margin:0 0.5rem;color:var(--border-color);}/* 主内容 */main{min-height:70vh;padding:2rem 0;}h1{font-size:2rem;margin:0 0 1.5rem;color:var(--text-primary);line-height:1.2;}h2{font-size:1.5rem;margin:2rem 0 1rem;color:var(--text-primary);border-left:4px solid var(--accent-yellow);padding-left:1rem;line-height:1.2;}h3{font-size:1.25rem;margin:1.5rem 0 0.75rem;color:var(--text-primary);}p{margin:0 0 1rem;line-height:1.8;color:var(--text-secondary);}/* Section */section{margin-bottom:3rem;}.section-intro{background:var(--card-bg);padding:2rem;border-radius:8px;margin-bottom:2rem;border:1px solid var(--border-color);}/* Layout F:强标签导向 - 卡片网格 */.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem;margin-top:1.5rem;}.card{background:var(--card-bg);border-radius:8px;padding:1.5rem;border:1px solid var(--border-color);transition:transform 0.3s ease,box-shadow 0.3s ease,border-color 0.3s ease;}.card:hover{transform:translateY(-4px);box-shadow:0 8px 16px rgba(0,0,0,0.3);border-color:var(--accent-blue);}.card-title{font-size:1.125rem;font-weight:600;margin:0 0 0.75rem;color:var(--text-primary);}.card-title a{color:var(--text-primary);transition:color 0.3s ease;}.card-title a:hover{color:var(--accent-yellow);text-decoration:none;}/* Layout F:强化标签展示 */.card-tags{display:flex;flex-wrap:wrap;gap:0.5rem;margin:1rem 0;}.tag{background:var(--accent-blue);color:var(--text-primary);padding:0.25rem 0.75rem;border-radius:4px;font-size:0.875rem;font-weight:500;transition:background 0.3s ease,transform 0.2s ease;}.tag:hover{background:var(--accent-yellow);color:var(--primary-bg);transform:scale(1.05);}.card-meta{font-size:0.875rem;color:var(--text-secondary);margin:0.5rem 0;display:flex;flex-wrap:wrap;gap:0.75rem;}.card-meta span{display:inline-flex;align-items:center;}.card-desc{font-size:0.9375rem;line-height:1.6;color:var(--text-secondary);margin-top:0.75rem;}/* 详情页 */.detail-header{background:var(--card-bg);padding:2rem;border-radius:8px;margin-bottom:2rem;border:1px solid var(--border-color);}.detail-title{font-size:2.25rem;margin:0 0 1.5rem;color:var(--text-primary);}.detail-meta{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem;margin:1.5rem 0;}.meta-item{background:var(--secondary-bg);padding:0.75rem 1rem;border-radius:4px;border:1px solid var(--border-color);}.meta-label{font-size:0.875rem;color:var(--text-secondary);margin-bottom:0.25rem;}.meta-value{font-size:1rem;color:var(--text-primary);font-weight:500;}.detail-content{background:var(--card-bg);padding:2rem;border-radius:8px;margin-bottom:2rem;border:1px solid var(--border-color);}.detail-section{margin-bottom:2rem;}.detail-section:last-child{margin-bottom:0;}.detail-section h3{color:var(--accent-yellow);border-bottom:2px solid var(--border-color);padding-bottom:0.5rem;margin-bottom:1rem;}/* 相关推荐 */.related-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1rem;}.related-item{background:var(--secondary-bg);padding:1rem;border-radius:6px;border:1px solid var(--border-color);transition:transform 0.2s ease,border-color 0.2s ease;}.related-item:hover{transform:translateY(-2px);border-color:var(--accent-blue);}.related-item h4{font-size:1rem;margin:0 0 0.5rem;color:var(--text-primary);}.related-item p{font-size:0.875rem;color:var(--text-secondary);margin:0;}/* 列表页专用 */.page-header{margin-bottom:2rem;}.page-intro{background:var(--card-bg);padding:1.5rem;border-radius:8px;margin-top:1rem;border:1px solid var(--border-color);}.page-links{margin-top:1rem;padding-top:1rem;border-top:1px solid var(--border-color);}.page-links a{display:inline-block;margin-right:1rem;margin-bottom:0.5rem;padding:0.5rem 1rem;background:var(--secondary-bg);border-radius:4px;transition:background 0.3s ease;}.page-links a:hover{background:var(--hover-bg);}/* 404 页面 */.error-page{text-align:center;padding:4rem 1rem;}.error-page h1{font-size:3rem;color:var(--accent-yellow);}.error-page p{font-size:1.125rem;margin:1rem 0 2rem;}.error-page a{display:inline-block;padding:0.75rem 2rem;background:var(--accent-blue);color:var(--text-primary);border-radius:4px;font-weight:500;transition:background 0.3s ease;}.error-page a:hover{background:var(--accent-yellow);color:var(--primary-bg);text-decoration:none;}/* 返回顶部 */.back-to-top{position:fixed;bottom:2rem;right:2rem;width:50px;height:50px;background:var(--accent-blue);color:var(--text-primary);border:none;border-radius:50%;cursor:pointer;display:none;align-items:center;justify-content:center;font-size:1.5rem;box-shadow:0 4px 8px rgba(0,0,0,0.3);transition:background 0.3s ease,transform 0.3s ease;z-index:99;}.back-to-top:hover{background:var(--accent-yellow);transform:translateY(-4px);}.back-to-top.visible{display:flex;}/* 响应式 */@media (max-width:767px){nav a{padding:0.75rem 0.25rem;font-size:0.875rem;} h1{font-size:1.5rem;} h2{font-size:1.25rem;} .card-grid{grid-template-columns:1fr;gap:1rem;} .detail-title{font-size:1.75rem;} .detail-header,.detail-content,.section-intro{padding:1.5rem;} .related-list{grid-template-columns:1fr;} .back-to-top{bottom:1rem;right:1rem;width:40px;height:40px;font-size:1.25rem;}}@media (min-width:768px) and (max-width:1023px){.card-grid{grid-template-columns:repeat(2,1fr);} .related-list{grid-template-columns:repeat(2,1fr);}}