.wechat-qrcode-fixed{position:fixed!important;right:20px!important;top:65vh!important;transform:translateY(-50%)!important;z-index:9999!important;transition:all .3s ease;pointer-events:auto!important;margin:0!important;padding:0!important}.wechat-qrcode-container{background:#fff;border-radius:12px;padding:12px;box-shadow:0 4px 20px rgba(0,0,0,.15);text-align:center;width:160px;transition:all .3s ease}.dark .wechat-qrcode-container{background:#1f2937;box-shadow:0 4px 20px rgba(0,0,0,.4)}.wechat-qrcode-title{font-size:14px;font-weight:600;color:#333;margin-bottom:8px;line-height:1.4}.dark .wechat-qrcode-title{color:#e5e7eb}.wechat-qrcode-image{width:100%;padding-top:100%;position:relative;overflow:hidden;border-radius:8px}.wechat-qrcode-image img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:contain;border-radius:8px}.wechat-qrcode-fixed:hover .wechat-qrcode-container{transform:scale(1.05);box-shadow:0 6px 30px rgba(0,0,0,.2)}.dark .wechat-qrcode-fixed:hover 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.topic-entry-badge{background:rgba(255,255,255,8%);color:#cbd5e1}.topics-grid,.topics-article-grid{align-items:stretch}.topic-entry-card,.topic-article-card{height:100%}.topic-entry-card{padding:1.6rem}.topic-entry-desc{line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.topic-entry-badge{flex-shrink:0}.topic-entry-link{color:#0f172a;font-size:.9rem;font-weight:600}.dark .topic-entry-link{color:#e2e8f0}.topic-entry-card:hover .topic-entry-link{color:rgb(var(--primary-hue) var(--primary-saturation) 45%)}.topic-single-hero{padding-bottom:2rem}.topic-target-tags{max-width:720px;margin-left:auto;margin-right:auto}.topic-tag-chip{background:rgba(255,255,255,.82)}.dark .topic-tag-chip{background:rgba(23,23,23,.72)}.topic-content-head{display:flex;align-items:flex-end;justify-content:space-between}.topic-article-type{min-width:52px;justify-content:center}@media(max-width:768px){.section-heading{align-items:flex-start;flex-direction:column}.tag-cloud{gap:10px}.taxonomy-list{gap:14px}.taxonomy-card{padding:1.15rem 1.1rem}.taxonomy-card .content-card-title{font-size:1.35rem}.topics-hero{border-radius:22px;padding:1.8rem 1.2rem}.topics-hero-meta{gap:8px}.topic-entry-card{padding:1.2rem}.topic-content-head{align-items:flex-start;flex-direction:column;gap:8px}}