.topic-hero{position:relative;width:100%;overflow:hidden;background:#000}.topic-hero-image{width:100%;height:100%;object-fit:cover;opacity:.7}.topic-hero-overlay{position:absolute;inset:0;background:linear-gradient(to bottom,rgba(0,0,0,.3),rgba(0,0,0,.6));display:flex;flex-direction:column;justify-content:center;align-items:center;color:#fff;padding:40px 20px}.topic-hero-title{font-size:36px;font-weight:700;margin:0 0 20px;text-align:center;letter-spacing:4px;text-shadow:2px 2px 8px rgba(0,0,0,.6)}.topic-hero-stats{display:flex;align-items:center;gap:24px;font-size:16px}.topic-hero-stat-divider{opacity:.4;font-size:18px;line-height:1}.topic-hero-stat{display:flex;align-items:center;gap:8px}.topic-hero-stat svg{width:20px;height:20px}.topic-content-section{background:var(--bg-body);padding:40px 0 60px}.topic-intro{background:#fff;padding:30px 36px;border-radius:var(--radius-md);box-shadow:var(--shadow-sm);margin-bottom:30px}.topic-intro-title{text-align:center;font-size:18px;font-weight:600;color:var(--primary-color);margin-bottom:20px;display:flex;align-items:center;justify-content:center;gap:12px}.topic-intro-title::after,.topic-intro-title::before{content:'';flex:1;height:1px;background:linear-gradient(to right,transparent,var(--primary-color))}.topic-intro-title::after{background:linear-gradient(to left,transparent,var(--primary-color))}.topic-intro-content{margin:0;padding:16px 20px;background:#f8f9fa;border-left:4px solid var(--primary-color);border-radius:0 var(--radius-sm) var(--radius-sm) 0;line-height:1.9;color:var(--text-secondary);font-size:15px;font-style:italic}.sub-topic-section{padding-bottom:40px}.sub-topic-section:not(:last-child){margin-bottom:40px;border-bottom:1px dashed #e0e0e0}.sub-topic-header{margin-bottom:20px}.sub-topic-title{font-size:20px;font-weight:600;color:var(--primary-color);margin:0;display:flex;align-items:center;justify-content:center;gap:14px}.sub-topic-title::after,.sub-topic-title::before{content:'';flex:1;height:2px;background:linear-gradient(to right,transparent,var(--primary-color))}.sub-topic-title::after{background:linear-gradient(to left,transparent,var(--primary-color))}.articles-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-bottom:20px}.article-card{background:#fff;border-radius:var(--radius-md);padding:20px;box-shadow:var(--shadow-sm);transition:.3s;cursor:pointer;border:1px solid #f0f0f0;border-top:3px solid transparent}.article-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--primary-color);border-top-color:var(--primary-color)}.article-title{font-size:16px;font-weight:600;color:var(--text-primary);margin:0 0 12px;line-height:1.5;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.article-card:hover .article-title{color:var(--primary-color)}.article-meta{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--text-lighter)}.article-meta-left{display:flex;gap:16px}.article-meta-item{display:flex;align-items:center;gap:4px}.article-meta-item svg{width:14px;height:14px}.view-more-container{text-align:center;margin-top:20px}.view-more-btn{display:inline-flex;align-items:center;gap:8px;padding:10px 30px;background:#fff;color:var(--primary-color);border:2px solid var(--primary-color);border-radius:var(--radius-lg);font-size:14px;font-weight:500;cursor:pointer;transition:.3s}.view-more-btn:hover{background:var(--primary-color);color:#fff}.view-more-btn svg{width:16px;height:16px}.empty-state{text-align:center;padding:60px 20px;background:#fff;border-radius:var(--radius-md);box-shadow:var(--shadow-sm)}.empty-state-icon{font-size:48px;margin-bottom:16px}.empty-state-text{color:#999;font-size:15px}.loading-state{text-align:center;padding:80px 20px}.loading-spinner{width:50px;height:50px;border:4px solid #f3f3f3;border-top:4px solid var(--primary-color);border-radius:50%;animation:1s linear infinite spin;margin:0 auto 20px}@keyframes spin{0%{transform:rotate(0)}100%{transform:rotate(360deg)}}.loading-text{color:#999;font-size:15px}.error-state{text-align:center;padding:80px 20px}.error-icon{font-size:64px;margin-bottom:20px}.error-text{color:#999;font-size:16px;margin-bottom:20px}.error-btn{padding:10px 30px;background:var(--primary-color);color:#fff;border:none;border-radius:var(--radius-md);font-size:14px;cursor:pointer;transition:.3s}.error-btn:hover{background:var(--primary-dark)}@media (max-width:992px){.topic-hero{height:300px}.topic-hero-title{font-size:28px}.topic-hero-stats{gap:24px;font-size:14px}.articles-grid{grid-template-columns:1fr}}@media (max-width:768px){.topic-hero{height:250px}.topic-hero-title{font-size:24px}.topic-hero-stats{flex-direction:column;gap:8px}.topic-hero-stat-divider{display:none}.topic-intro{padding:20px}.topic-intro-content{font-size:14px;padding:12px 16px}.sub-topic-header{margin-bottom:16px}.sub-topic-title{font-size:17px;gap:10px}.article-card{padding:15px}.article-title{font-size:15px}.article-meta{font-size:12px}}