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0 38px}.directory-diagnostic-nav-button,.directory-feedback-button{min-height:40px}.directory-feedback-actions,.directory-feedback-kp-actions{width:100%}.mobile-directory-tree .kp-tree-volume-row{border-bottom:1px solid #eef2f6;font-size:14px!important;min-height:46px;padding:10px 14px!important}.mobile-directory-tree .kp-tree-chapter-toggle{min-height:42px;padding:10px 0 10px 18px!important;width:34px}.mobile-directory-tree .kp-tree-chapter-row{border-radius:0 6px 6px 0;font-size:13px!important;line-height:1.45;min-height:42px;padding:10px 12px 10px 0!important}.mobile-directory-tree .kp-tree-section-toggle{min-height:38px;padding:9px 0 9px 30px!important;width:46px}.mobile-directory-tree .kp-tree-section-row{border-radius:0 6px 6px 0;font-size:12px!important;line-height:1.45;min-height:38px;padding:9px 12px 9px 0!important}.mobile-directory-tree .kp-tree-kp-row{gap:10px;min-height:40px;padding:9px 12px 9px 44px!important}.mobile-directory-tree 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24px}.kp-detail-topline{align-items:flex-start;border-bottom:0;gap:7px;margin-bottom:12px;padding-bottom:0}.kp-detail-back{background:transparent;border-color:transparent;color:#11737b;height:32px;padding:0}.kp-detail-breadcrumb{color:#8a94a3;font-size:11px}.kp-detail-header{background:#fff;border:1px solid #e6ebf1;border-radius:10px;margin-bottom:12px;padding:14px}.kp-detail-title{font-size:22px}.kp-action-card{min-height:74px;padding:13px 15px}}@media(max-width:640px){.paper-batch-item-head,.paper-correction-row,.mistake-row-main,.history-record-summary,.physics-demo-video-meta{display:block}.history-workspace{padding:18px 12px 32px}.history-header{align-items:stretch;border-radius:12px;gap:12px;padding:14px}.history-filter-bar{border-radius:12px;width:100%}.history-filter-button{flex:1 1 auto}.history-record-date{display:block;margin-top:8px}.history-timeline{padding-left:0}.history-timeline:before,.history-record-card:before{display:none}.history-record-summary{padding:13px 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