:root{--qb-ink:var(--color-text-primary);--qb-muted:var(--color-text-secondary);--qb-line:var(--color-border);--qb-paper:var(--color-surface);--qb-accent:var(--color-primary);--qb-soft:var(--color-surface-hover);--qb-font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif}
.question-page{max-width:var(--width-workbench)}.qb-file-notice{max-width:680px;margin:12vh auto;padding:34px 38px;border:1px solid var(--color-border);border-radius:6px;background:var(--color-warning-soft);box-shadow:var(--shadow-paper);color:var(--qb-ink)}.qb-file-notice[hidden]{display:none}.qb-file-notice h1{margin:0;font-size:28px}.qb-file-notice p:not(.qb-eyebrow){line-height:1.8;color:var(--qb-muted)}.qb-file-notice .btn{display:inline-block;margin:8px 0 12px;text-decoration:none}.qb-file-notice small{display:block;color:var(--qb-muted)}.qb-file-notice code{padding:2px 5px;border-radius:4px;background:var(--color-surface-hover)}.qb-booting{max-width:680px;margin:18vh auto;padding:24px;text-align:center;color:var(--color-text-secondary);font-size:15px}.qb-booting[hidden]{display:none}html.is-file-protocol .qb-booting{display:none}.qb-selection-toolbar{display:flex;align-items:center;gap:10px;padding:10px 14px;margin-bottom:10px;border:1px solid var(--color-border);border-radius:8px;background:var(--color-primary-soft);color:var(--color-text-secondary)}.qb-selection-toolbar[hidden]{display:none}
.qb-eyebrow{margin:0 0 6px;color:var(--qb-accent);font-size:12px;font-weight:700;letter-spacing:.12em}.qb-hero h1{margin:0;font-family:Georgia,"Songti SC",serif;font-size:34px;color:var(--qb-ink)}.qb-subtitle{margin:8px 0 0;color:var(--qb-muted);font-size:14px}.qb-hero-actions{display:flex;gap:8px;align-items:center}.qb-tabs{display:flex;gap:22px;border-bottom:1px solid var(--qb-line);margin-top:18px}.qb-tab{border:0;background:none;padding:12px 2px;color:var(--qb-muted);font-size:15px;border-bottom:2px solid transparent;cursor:pointer}.qb-tab.on{color:var(--qb-accent);border-bottom-color:var(--qb-accent);font-weight:700}
.qb-toolbar{justify-content:flex-end;padding:0 0 12px;border-bottom:1px solid var(--qb-line)}
.qb-filter-panel{padding:16px 0;border-bottom:1px solid var(--qb-line)}.qb-search-row{display:flex;gap:10px}.qb-search{position:relative;flex:1;display:block}.qb-search span{position:absolute;left:13px;top:8px;font-size:21px;color:var(--qb-muted)}.qb-search input{width:100%;box-sizing:border-box;padding:11px 14px 11px 38px;border:1px solid var(--qb-line);border-radius:8px;background:var(--color-surface);font-size:14px}.qb-filters{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:12px}.qb-filters label{font-size:12px;color:var(--qb-muted)}.qb-filters select{display:block;width:100%;margin-top:5px;padding:9px;border:1px solid var(--qb-line);border-radius:7px;background:var(--color-surface);color:var(--qb-ink)}.qb-list-head{display:flex;justify-content:flex-start;gap:12px;padding:2px 0 8px;color:var(--qb-muted);font-size:13px}
.qb-list-head:has(#coverageNote:empty){display:none;padding:0}.qb-seed-note{color:var(--color-warning)}.qb-layout{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(360px,.7fr);gap:16px;align-items:start}.qb-list{display:flex;flex-direction:column;gap:10px}.qb-card{border:1px solid var(--qb-line);background:var(--qb-paper);padding:16px;border-radius:8px;cursor:pointer}.qb-card:hover,.qb-card.on{border-color:var(--color-primary-border);box-shadow:0 5px 20px rgba(46,34,30,.06)}.qb-card-top,.qb-detail-head{display:flex;align-items:center;gap:8px}.qb-card-top{justify-content:space-between}.qb-card-meta{display:flex;align-items:center;gap:7px;flex-wrap:wrap}.qb-tag{font-size:11px;padding:3px 7px;border-radius:4px;background:var(--qb-soft);color:var(--color-text-secondary)}.qb-tag.type{background:var(--color-primary-soft);color:var(--qb-accent)}.qb-card h3{font-size:15px;line-height:1.7;font-weight:600;margin:10px 0 4px;white-space:pre-line}.qb-card-foot{display:flex;justify-content:space-between;align-items:center;color:var(--qb-muted);font-size:12px}.qb-detail{position:sticky;top:16px;border:1px solid var(--qb-line);background:var(--color-surface);border-radius:8px;padding:20px;min-height:300px}.empty-detail{display:flex;align-items:center;justify-content:center;color:var(--qb-muted)}.qb-detail h2{margin:10px 0 16px;font-size:20px;line-height:1.6}.qb-detail-actions{margin-left:auto;display:flex;gap:6px}.qb-content-block{white-space:pre-line;line-height:1.9;margin:12px 0;color:var(--qb-ink)}.qb-material{padding:12px 14px;background:var(--color-warning-soft);border-left:3px solid var(--color-warning)}.qb-option{display:flex;gap:8px;line-height:1.8;margin:8px 0}.qb-option-key{font-weight:700;min-width:22px}.qb-answer-box{margin-top:18px;padding-top:14px;border-top:1px solid var(--qb-line)}.qb-detail small{color:var(--qb-muted)}.qb-pagination{display:flex;justify-content:center;gap:6px;padding:20px}.qb-page-btn{border:1px solid var(--qb-line);background:var(--color-surface);border-radius:5px;padding:6px 10px;cursor:pointer}.qb-page-btn.on{background:var(--qb-accent);color:var(--color-primary-foreground);border-color:var(--qb-accent)}.qb-overlay{position:fixed;inset:0;z-index:50;background:rgba(25,29,31,.48);display:flex;align-items:center;justify-content:center;padding:24px}.qb-overlay[hidden]{display:none}.qb-modal{width:min(920px,96vw);max-height:92vh;overflow:auto;background:var(--color-surface);border-radius:8px;box-shadow:0 20px 70px rgba(0,0,0,.22)}.qb-import-modal{width:min(1080px,96vw)}.qb-modal-head{display:flex;justify-content:space-between;align-items:start;padding:20px 24px;border-bottom:1px solid var(--qb-line)}.qb-modal-head h2{margin:0;font-size:22px}.icon-btn{border:0;background:none;font-size:28px;line-height:1;color:var(--qb-muted);cursor:pointer}.qb-upload-zone{margin:20px 24px;padding:28px;border:1px dashed var(--color-border);border-radius:8px;background:var(--color-warning-soft);display:flex;flex-direction:column;align-items:center;gap:7px;cursor:pointer}
.qb-import-doctabs{display:flex;flex-wrap:wrap;gap:20px;padding:14px 24px 0;border-bottom:1px solid var(--qb-line)}
.qb-import-doctabs button{padding:8px 2px;border:0;border-bottom:2px solid transparent;background:transparent;color:var(--color-text-tertiary);font-family:inherit;font-size:14px;cursor:pointer;white-space:nowrap;flex-shrink:0}
.qb-import-doctabs button.is-active{border-bottom-color:var(--color-primary);color:var(--color-primary);font-weight:600}
.qb-answer-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin:12px 24px 0;font-size:13px;color:var(--qb-muted)}
.qb-answer-row-name{color:var(--color-text-primary);max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.qb-upload-zone span,.qb-import-status{font-size:13px;color:var(--qb-muted)}.qb-import-status{margin:0 24px 12px}.qb-draft-list{padding:0 24px}.qb-draft{border-top:1px solid var(--qb-line);padding:16px 0}.qb-draft-head{display:flex;justify-content:space-between;align-items:center}.qb-draft-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}.qb-draft label{font-size:12px;color:var(--qb-muted)}.qb-draft textarea,.qb-draft select{box-sizing:border-box;width:100%;margin-top:5px;border:1px solid var(--qb-line);border-radius:6px;padding:9px;line-height:1.7;resize:vertical}.qb-draft textarea{min-height:74px}.qb-modal-foot{display:flex;justify-content:flex-end;gap:8px;padding:16px 24px;border-top:1px solid var(--qb-line)}.qb-basket-modal{width:min(760px,96vw)}.qb-basket-toolbar{display:flex;justify-content:space-between;align-items:center;padding:14px 24px;color:var(--qb-muted);font-size:13px}.qb-basket-list{padding:0 24px 10px}.basket-row{display:grid;grid-template-columns:32px 1fr 76px 30px;gap:10px;align-items:start;border-top:1px solid var(--qb-line);padding:13px 0}.basket-row input{width:65px;padding:6px;border:1px solid var(--qb-line);border-radius:5px}.basket-remove{border:0;background:none;color:var(--color-primary);cursor:pointer}.paper-tabs{display:flex;gap:16px;padding:12px 24px;border-bottom:1px solid var(--qb-line)}.paper-tabs button{border:0;background:none;padding:7px 0;color:var(--qb-muted);cursor:pointer}.paper-tabs button.on{color:var(--qb-accent);font-weight:700;border-bottom:2px solid var(--qb-accent)}.paper-content{padding:30px 42px;font-family:"Songti SC",SimSun,serif;color:var(--color-text-primary)}.paper-content h1{text-align:center;font-size:24px}.paper-question{margin:22px 0;break-inside:avoid}.paper-question-title{font-weight:600;line-height:1.9;white-space:pre-line}.paper-q-code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:11px;font-weight:400;letter-spacing:.02em;color:var(--color-text-tertiary);margin-right:8px}.paper-question .qb-option{font-family:inherit}.paper-analysis{margin-top:8px;color:var(--color-text-secondary);white-space:pre-line;line-height:1.8}.paper-empty{text-align:center;color:var(--qb-muted)}
@media(max-width:900px){.qb-layout{grid-template-columns:1fr}.qb-detail{position:static}.qb-filters{grid-template-columns:repeat(2,minmax(0,1fr))}.qb-hero{align-items:start;flex-direction:column}.qb-hero-actions{width:100%}.qb-hero-actions .btn{flex:1}.qb-draft-grid{grid-template-columns:1fr}}
.qb-image{display:block;max-width:100%;height:auto;max-height:460px;object-fit:contain;margin:10px auto;border:1px solid var(--qb-line);border-radius:4px}.qb-card-body .qb-image:last-child,.qb-card-material .qb-image:last-child{margin-bottom:4px}@media print{body>*:not(.qb-overlay){display:none!important}.qb-overlay{position:static;background:none;padding:0}.qb-paper-modal{width:100%;max-height:none;box-shadow:none}.paper-content{padding:0}.no-print{display:none!important}}
.qb-select-label{display:flex;align-items:center;gap:5px;color:var(--qb-muted);font-size:12px;white-space:nowrap}.qb-select-label input{accent-color:var(--qb-accent)}.qb-card-actions{display:flex;gap:6px;align-items:center}.qb-entry-modal{width:min(980px,96vw)}.qb-entry-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:18px 24px}.qb-entry-grid label{font-size:12px;color:var(--qb-muted)}.qb-entry-grid .wide{grid-column:1/-1}.qb-entry-grid input,.qb-entry-grid select,.qb-entry-grid textarea{display:block;box-sizing:border-box;width:100%;margin-top:5px;padding:9px;border:1px solid var(--qb-line);border-radius:6px;background:var(--color-surface);line-height:1.7;resize:vertical}.qb-entry-grid textarea{min-height:70px}
.qb-workbench{display:grid;grid-template-columns:264px minmax(0,1fr);gap:18px;align-items:start;margin-top:18px}.qb-catalog{position:sticky;top:12px;min-height:620px;border-right:1px solid var(--color-border);padding:12px 14px 24px 0;background:var(--color-surface-hover)}.qb-catalog-head{display:flex;justify-content:space-between;align-items:flex-start;padding:0 8px 14px 10px}.qb-catalog-head h2{margin:0;font-size:19px;color:var(--color-text-primary)}.qb-catalog-close{font-size:24px;padding:0 8px}.qb-catalog-all{display:flex;justify-content:space-between;align-items:center;width:100%;border:0;border-radius:7px;background:transparent;padding:11px 12px;color:var(--color-text-secondary);text-align:left;font-size:14px;cursor:pointer}.qb-catalog-all:hover,.qb-catalog-all.on{background:var(--color-primary-soft);color:var(--color-primary)}.qb-book-group{margin-top:4px}.qb-book-row{display:flex;align-items:center;gap:7px;width:100%;border:0;background:transparent;padding:10px 8px;color:var(--color-text-secondary);text-align:left;cursor:pointer;font-size:14px}.qb-book-row:hover{color:var(--color-primary)}.qb-tree-toggle{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;border-radius:8px;background:var(--color-border);color:var(--color-text-tertiary);font-weight:700}.qb-frame-list{display:none;padding-left:24px}.qb-book-group.open .qb-frame-list{display:block}.qb-frame-row{display:flex;align-items:flex-start;gap:7px;width:100%;border:0;border-left:1px dashed var(--color-border);background:transparent;padding:8px 8px;color:var(--color-text-secondary);text-align:left;line-height:1.45;cursor:pointer;font-size:13px}.qb-frame-row span{color:var(--color-text-tertiary)}.qb-frame-row:hover,.qb-frame-row.on{color:var(--color-primary);background:var(--color-primary-soft);border-radius:5px}.qb-tree-empty{padding:4px 8px;color:var(--color-text-tertiary);font-size:12px}.qb-results-pane{min-width:0}.qb-results-bar{display:flex;align-items:center;gap:12px;min-height:42px;padding:0 2px 10px;color:var(--color-text-secondary);font-size:14px}.qb-results-bar .qb-results-hint{margin-left:auto;color:var(--color-text-tertiary);font-size:12px}.qb-result-count{color:var(--color-text-tertiary);font-size:12px}.qb-results-bar .qb-sort-pick{margin-left:auto}.qb-mobile-catalog{display:none}.qb-card{padding:16px;border-radius:8px;box-shadow:0 1px 0 rgba(29,37,44,.02)}.qb-card-top{justify-content:flex-start;align-items:flex-start}.qb-card-top .qb-card-meta{flex:1}.qb-card-question{display:grid;grid-template-columns:28px minmax(0,1fr);gap:6px;margin-top:12px}.qb-question-index{font-size:16px;font-weight:700;color:var(--color-text-primary);line-height:1.65}.qb-card h3{margin:0;font-size:16px;line-height:1.65;color:var(--color-text-primary)}.qb-card-options{margin-top:10px;display:grid;grid-template-columns:1fr 1fr;gap:4px 22px}.qb-card-option{display:flex;gap:7px;line-height:1.8;color:var(--color-text-secondary);font-size:14px}.qb-card-option b{color:var(--color-text-primary)}.qb-card-foot{margin-top:15px;padding-top:12px;border-top:1px solid var(--color-border);gap:10px}.qb-card-foot>span{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.qb-card-actions{flex-shrink:0}.qb-text-action{border:0;background:transparent;color:var(--color-primary);font-size:13px;cursor:pointer;padding:4px 3px}.qb-text-action:hover{text-decoration:underline}.qb-basket-btn{border:0;background:var(--color-primary);color:var(--color-primary-foreground);border-radius:5px;padding:8px 12px;cursor:pointer;font-size:13px}.qb-basket-btn:hover{background:var(--color-primary-hover)}.qb-detail{top:12px;min-height:500px;border-radius:8px;box-shadow:0 2px 12px rgba(32,48,60,.04)}
.qb-workbench.catalog-collapsed{grid-template-columns:minmax(0,1fr)}.qb-workbench.catalog-collapsed .qb-catalog{display:none}.qb-workbench.catalog-collapsed .qb-mobile-catalog{display:inline-flex}
.qb-filter-groups{margin-top:14px;border-top:1px solid var(--color-border)}.qb-filter-group{display:flex;align-items:center;gap:14px;min-height:52px;border-bottom:1px solid var(--color-border)}.qb-filter-label{flex:0 0 48px;color:var(--color-text-tertiary);font-size:14px}.qb-choice-list{display:flex;align-items:center;gap:25px;flex-wrap:wrap}.qb-choice{padding:7px 2px;border:0;background:transparent;color:var(--color-text-secondary);font:inherit;font-size:14px;cursor:pointer}.qb-choice:hover,.qb-choice.on{color:var(--color-primary);font-weight:600}.qb-choice.on{position:relative}.qb-choice.on::after{content:"";position:absolute;right:0;bottom:0;left:0;height:2px;background:var(--color-primary);border-radius:2px}.qb-filter-more{gap:20px}.qb-inline-select{display:flex;align-items:center;gap:6px;color:var(--color-text-secondary);font-size:14px}.qb-inline-select select{padding:5px 22px 5px 0;border:0;background:transparent;color:var(--color-text-secondary);font:inherit;cursor:pointer}.qb-filter-more .qb-inline-select+ .qb-inline-select{margin-left:18px}.qb-filter-groups [hidden]{display:none!important}
.qb-inline-analysis{margin:14px 0 0 34px;padding:14px 16px;border-top:1px solid var(--color-border);background:var(--color-surface-hover);color:var(--color-text-secondary);line-height:1.8}.qb-inline-answer,.qb-inline-explanation{display:flex;gap:12px;align-items:flex-start}.qb-inline-answer{padding-bottom:9px;border-bottom:1px solid var(--color-border)}.qb-inline-answer b,.qb-inline-explanation>b{min-width:38px;color:var(--color-text-primary)}.qb-inline-explanation{padding-top:9px}.qb-inline-explanation .qb-content-block{margin:0}.qb-muted-text{color:var(--color-text-tertiary)}.qb-card-material{margin-bottom:10px;padding:10px 12px;background:var(--color-warning-soft);border-left:3px solid var(--color-warning);color:var(--color-text-secondary);line-height:1.75}.qb-card-material .qb-content-block{margin:3px 0}.qb-results-pane>.qb-list{max-width:none}
@media(max-width:1100px){.qb-workbench{grid-template-columns:220px minmax(0,1fr)}.qb-layout{grid-template-columns:minmax(0,1fr)}.qb-detail{display:none}.qb-card-options{grid-template-columns:1fr}}
@media(max-width:760px){.qb-workbench{display:block}.qb-catalog{display:none;position:fixed;z-index:45;inset:0 auto 0 0;width:min(310px,88vw);padding:16px;background:var(--color-surface);border-right:1px solid var(--qb-line);box-shadow:12px 0 40px rgba(20,30,40,.16);overflow:auto}.qb-catalog.mobile-open{display:block}.qb-catalog.collapsed{display:none}.qb-mobile-catalog{display:inline-flex}.qb-results-bar .qb-results-hint{display:none}.qb-filters{grid-template-columns:1fr 1fr}.qb-card{padding:14px}.qb-card-foot{align-items:flex-end;flex-direction:column}.qb-card-foot>span{width:100%}.qb-card-actions{width:100%;justify-content:flex-end}.qb-hero-actions{flex-wrap:wrap}}

/* 题库信息层级：统一字体、语义标签和四级教材目录。 */
.question-page,.qb-card,.qb-catalog,.qb-filter-panel{font-family:var(--qb-font,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif)}
.qb-filters{grid-template-columns:repeat(3,minmax(0,1fr))}
.qb-card h3{font-family:inherit;font-size:16px;font-weight:600;line-height:1.65;color:var(--color-text-primary);letter-spacing:0}
.qb-card-option{font-family:inherit;font-size:15px;font-weight:400;line-height:1.65;color:var(--color-text-secondary)}
.qb-card-option b{min-width:23px;font-size:15px;font-weight:600;color:var(--color-text-primary)}
.qb-question-index{font-family:inherit;font-size:16px;font-weight:600}
.qb-content-block,.qb-inline-analysis{font-family:inherit;font-size:14px}
.qb-tag{display:inline-flex;align-items:center;min-height:24px;box-sizing:border-box;padding:3px 9px;border:1px solid transparent;border-radius:6px;font-family:inherit;font-size:12px;font-weight:500;line-height:1.3;white-space:nowrap}
.qb-tag.type{background:var(--color-primary-soft);border-color:var(--color-primary-border);color:var(--color-primary)}
.qb-tag.textbook{background:var(--color-primary-soft);border-color:var(--color-primary-border);color:var(--color-primary)}
.qb-tag.frame{background:var(--color-primary-soft);border-color:var(--color-primary-border);color:var(--color-primary)}
.qb-tag.knowledge{background:var(--color-success-soft);border-color:var(--color-success-soft);color:var(--color-success)}
.qb-tag.difficulty{background:var(--color-warning-soft);border-color:var(--color-warning-soft);color:var(--color-warning)}
.qb-book-group{position:relative;border-left:1px dashed var(--color-border)}
.qb-book-row{position:relative;display:flex;align-items:center;gap:7px;width:100%;border:0;background:transparent;padding:10px 8px 10px 10px;color:var(--color-text-secondary);text-align:left;cursor:pointer;font-size:14px}
.qb-book-row::before{content:"";position:absolute;left:0;top:19px;width:10px;border-top:1px dashed var(--color-border)}
.qb-unit-list{display:none;margin-left:19px;padding:0 0 2px 0;border-left:1px dashed var(--color-border)}
.qb-book-group.open>.qb-unit-list{display:block}
.qb-unit-node>.qb-frame-list{display:none!important;margin-left:19px;padding-left:0;border-left:1px dashed var(--color-border)}
.qb-unit-node.open>.qb-frame-list{display:block!important}
.qb-unit-row{position:relative;display:flex;align-items:flex-start;gap:7px;width:100%;padding:9px 7px 9px 10px;border:0;background:transparent;color:var(--color-text-secondary);text-align:left;font-family:inherit;font-size:13px;line-height:1.5;cursor:pointer}
.qb-unit-row::before{content:"";position:absolute;left:0;top:18px;width:10px;border-top:1px dashed var(--color-border)}
.qb-unit-row:hover{color:var(--color-primary)}
.qb-unit-row b{font-weight:600}
.qb-frame-node>.qb-knowledge-list{display:none}
.qb-frame-node.open>.qb-knowledge-list{display:block}
.qb-frame-row{position:relative;display:flex;align-items:flex-start;gap:7px;width:100%;padding:8px 7px 8px 10px;border:0;background:transparent;font-size:13px;color:var(--color-text-secondary);line-height:1.45;text-align:left;cursor:pointer}
.qb-frame-row::before{content:"";position:absolute;left:0;top:17px;width:10px;border-top:1px dashed var(--color-border)}
.qb-frame-row .qb-tree-toggle{flex:0 0 18px}
.qb-frame-row:hover,.qb-frame-row.on{color:var(--color-primary);background:var(--color-primary-soft)}
.qb-knowledge-list{margin-left:19px;padding:2px 0 5px 0;border-left:1px dashed var(--color-border)}
.qb-knowledge-row{position:relative;display:block;width:100%;padding:7px 8px 7px 10px;border:0;background:transparent;color:var(--color-text-tertiary);text-align:left;font-family:inherit;font-size:12px;line-height:1.5;cursor:pointer}
.qb-knowledge-row::before{content:"";position:absolute;left:0;top:16px;width:10px;border-top:1px dashed var(--color-border)}
.qb-knowledge-row:hover,.qb-knowledge-row.on{border-radius:5px;background:var(--color-primary-soft);color:var(--color-primary)}
@media(max-width:760px){.qb-filters{grid-template-columns:1fr 1fr}.qb-card h3,.qb-question-index{font-size:16px}.qb-card-option{font-size:14px}}

/* 学科网式题卡：元信息轻量化，正文作为视觉主体。 */
.qb-list{gap:12px}
.qb-card{padding:0;border:1px solid var(--color-border);border-radius:8px;background:var(--color-surface);overflow:hidden;cursor:default;box-shadow:0 2px 8px rgba(30,45,60,.035)}
.qb-card:hover,.qb-card.on{border-color:var(--color-border);box-shadow:0 5px 18px rgba(30,45,60,.075)}
.qb-card-top{display:flex;align-items:center;gap:12px;min-height:42px;padding:0 16px;border-bottom:1px solid rgba(0,0,0,.04);background:rgba(255,255,255,.35)}
/* 高考真题来源行：年份+卷别（全国甲卷/广东卷…），主色浅底一条，不做胶囊小标签 */
.qb-card-source{display:flex;align-items:center;gap:10px;padding:6px 18px;background:var(--color-primary-soft);border-bottom:1px solid var(--color-primary-border);font-size:12px;line-height:1.5}
.qb-card-source .qb-src-badge{flex:none;color:var(--color-primary);font-weight:600}
.qb-card-source .qb-src-paper{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--color-text-secondary)}
.qb-card-top .qb-card-meta{flex:1}
.qb-card-meta{display:flex;align-items:center;gap:10px;min-width:0;color:var(--color-text-tertiary);font-family:inherit;font-size:12px;line-height:1.4;white-space:nowrap;overflow:hidden}
.qb-card-meta>i{display:block;flex:0 0 1px;width:1px;height:15px;background:var(--color-border)}
.qb-meta-text{display:inline-block;flex:0 0 auto;color:var(--color-text-tertiary)}
.qb-meta-text.type{color:var(--color-text-secondary)}
.qb-meta-text.is-new{color:var(--color-primary);font-weight:600;letter-spacing:.02em}
.qb-meta-text.difficulty{color:var(--color-text-tertiary)}
.qb-meta-text.textbook{color:var(--color-primary)}
.qb-meta-text.frame{max-width:250px;overflow:hidden;text-overflow:ellipsis;color:var(--color-text-tertiary)}
.qb-meta-knowledge{display:flex;align-items:center;gap:14px;min-width:0;overflow:hidden}
.qb-meta-text.knowledge{overflow:hidden;text-overflow:ellipsis;color:var(--color-text-tertiary)}
.qb-meta-text.q-code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;letter-spacing:.02em;color:var(--color-text-tertiary)}
.qb-select-label{flex:0 0 auto;color:var(--color-text-tertiary);font-size:12px}
.qb-select-label input{width:15px;height:15px}
.qb-card-question{display:grid;grid-template-columns:34px minmax(0,1fr);gap:0;padding:16px 24px;margin:0}
.qb-question-index{padding-top:1px;font-family:inherit;font-size:18px;font-weight:500;line-height:1.85;color:var(--color-text-primary)}
.qb-card h3{margin:0;font-family:inherit;font-size:16px;font-weight:400;line-height:1.9;color:var(--color-text-primary);letter-spacing:0;white-space:pre-line}
.qb-card-material{margin:0 0 16px;padding:0;border:0;background:transparent;color:var(--color-text-primary);font-size:16px;line-height:1.9}
.qb-card-material>b{display:block;margin-bottom:8px;font-size:15px;color:var(--color-text-secondary)}
.qb-card-material .qb-content-block{margin:0 0 10px;font-size:16px;line-height:1.9}
.qb-card-options{display:grid;margin-top:13px;column-gap:42px;row-gap:5px}
.qb-card-options.options-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.qb-card-options.options-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.qb-card-options.options-1{grid-template-columns:1fr}
.qb-card-option{display:flex;align-items:flex-start;gap:8px;min-width:0;font-family:inherit;font-size:16px;font-weight:400;line-height:1.9;color:var(--color-text-primary)}
.qb-card-option b{flex:0 0 22px;min-width:22px;font-size:16px;font-weight:400;color:var(--color-text-primary)}
.qb-card-option span{min-width:0;white-space:pre-line}
.qb-inline-analysis{margin:0;padding:18px 28px 19px;border-top:1px dashed rgba(0,0,0,.08);background:rgba(255,255,255,.4);color:var(--color-text-primary);font-family:inherit;font-size:15px;line-height:1.9}
.qb-inline-answer,.qb-inline-explanation{display:flex;align-items:flex-start;gap:8px}
.qb-inline-answer{padding:0 0 14px;border:0}
.qb-inline-recite .qb-recite-answer{flex:1;min-width:0}
.qb-inline-explanation{padding:0}
.qb-inline-answer b,.qb-inline-explanation>b{flex:0 0 auto;min-width:auto;color:var(--color-primary);font-size:15px;font-weight:600}
.qb-inline-explanation>div{min-width:0;flex:1}
.qb-inline-explanation .qb-content-block{margin:0 0 8px;font-size:15px;line-height:1.9;color:var(--color-text-primary)}
.qb-card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:52px;margin:0 18px;padding:0 0;border-top:1px solid var(--color-border);color:var(--color-text-tertiary);font-family:inherit;font-size:12px}
.qb-card-foot>span{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.qb-card-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto}
.qb-text-action{padding:5px 0;border:0;background:transparent;color:var(--color-primary);font-family:inherit;font-size:13px;cursor:pointer}
.qb-text-action:hover{text-decoration:none;color:var(--color-primary)}
.qb-basket-btn{min-height:34px;padding:7px 14px;border:0;border-radius:4px;background:var(--color-primary);color:var(--color-primary-foreground);font-family:inherit;font-size:13px;font-weight:500;cursor:pointer}
.qb-basket-btn:hover{background:var(--color-primary)}
.qb-added-badge{display:inline-flex;align-items:center;gap:4px;padding:6px 12px;border-radius:4px;background:var(--color-primary);color:var(--color-primary-foreground);font-size:12px;font-weight:500;cursor:pointer;user-select:none;white-space:nowrap}
.qb-added-badge:hover{background:var(--color-primary);text-decoration:line-through}
@media(max-width:1050px){.qb-card-options.options-4{grid-template-columns:repeat(2,minmax(0,1fr))}.qb-card-meta{gap:7px}.qb-meta-knowledge{gap:8px}.qb-meta-text.frame{max-width:180px}}
@media(max-width:760px){.qb-card-top{padding:7px 12px;align-items:flex-start}.qb-card-meta{flex-wrap:wrap;white-space:normal}.qb-card-meta>i{display:none}.qb-meta-knowledge{flex-wrap:wrap}.qb-card-question{grid-template-columns:27px minmax(0,1fr);padding:18px 14px}.qb-question-index,.qb-card h3{font-size:16px}.qb-card-options.options-4,.qb-card-options.options-2{grid-template-columns:1fr}.qb-card-option{font-size:15px}.qb-inline-analysis{margin:0 14px 0 41px}.qb-card-foot{margin:0 12px;padding:10px 0;align-items:flex-start;flex-direction:column}.qb-card-actions{width:100%;gap:11px;justify-content:flex-end;flex-wrap:wrap}}

/* 我的作业：最近使用作业是默认加入目标。 */
.qb-card[data-id]{cursor:pointer}
.qb-card button,.qb-card input,.qb-card label{cursor:pointer}
.qb-mine-views{display:flex;gap:22px;padding:14px 0 0;border-bottom:1px solid var(--qb-line)}
.qb-mine-views[hidden]{display:none}
.qb-mine-views button{padding:9px 2px;border:0;border-bottom:2px solid transparent;background:transparent;color:var(--color-text-tertiary);font-family:var(--qb-font);font-size:14px;cursor:pointer}
.qb-mine-views button.on{border-bottom-color:var(--color-primary);color:var(--color-primary);font-weight:600}
.qb-assignment-list{display:none;flex-direction:column;gap:12px}
.qb-assignment-list.visible{display:flex}
.qb-assignment-card{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:20px 22px;border:1px solid var(--color-border);border-radius:8px;background:var(--color-surface);box-shadow:0 2px 8px rgba(30,45,60,.035)}
.qb-assignment-card.active{border-color:var(--color-primary-border);background:var(--color-surface-hover)}
.qb-assignment-card h3{margin:7px 0 6px;color:var(--color-text-primary);font-size:16px;font-weight:500}
.qb-assignment-card p{margin:0;color:var(--color-text-tertiary);font-size:13px}
.qb-assignment-status{display:inline-flex;padding:3px 8px;border-radius:4px;background:var(--color-primary-soft);color:var(--color-primary);font-size:11px}
.qb-assignment-empty{padding:42px 24px;border:1px dashed var(--color-border);border-radius:8px;background:var(--color-surface-hover);text-align:center;color:var(--color-text-tertiary)}
.qb-assignment-empty h3{margin:0 0 8px;color:var(--color-text-secondary);font-size:18px}
.qb-assignment-empty p{margin:0 0 18px}
@media(max-width:760px){.qb-assignment-card{align-items:flex-start;flex-direction:column}.qb-assignment-card .btn{width:100%}}

/* 母题改编弹窗（V2.2）：顶部轻量工具栏 + 母题对照网格 + 固定底栏，弹窗内单一纵向滚动 */
.qb-adapt-modal{display:flex;flex-direction:column;width:min(1180px,96vw);max-height:92vh;overflow:hidden}
.qb-adapt-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;padding:12px 24px;border-bottom:1px solid var(--qb-line)}
.qb-adapt-toolbar label{display:inline-flex;align-items:center;gap:6px;color:var(--color-text-secondary);font-size:13px;white-space:nowrap}
.qb-adapt-toolbar select{height:32px;padding:0 8px;border:1px solid var(--color-border);border-radius:6px;background:var(--color-surface);font:inherit;font-size:13px;color:var(--color-text-primary)}
.qb-adapt-mode-hint{flex:1;min-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--color-text-tertiary);font-size:12px}
.qb-adapt-status{margin:0;padding:8px 24px;border-bottom:1px solid var(--qb-line);background:var(--color-surface-hover);color:var(--color-text-tertiary);font-size:12px}
.qb-adapt-workbench{position:relative;flex:1;min-height:420px;overflow:auto;padding:18px 24px}
.qb-adapt-modal .qb-modal-foot{flex-shrink:0}
.qb-adapt-pane{position:relative;min-width:0}
.qb-adapt-grid{display:grid;grid-template-columns:52px minmax(0,1fr) minmax(0,1fr);gap:1px;background:var(--color-border);border:1px solid var(--color-border);border-radius:6px;overflow:hidden}
.qb-adapt-corner{background:var(--color-surface-hover)}
.qb-adapt-head{display:flex;flex-wrap:wrap;align-items:center;gap:6px 8px;background:var(--color-surface-hover);padding:7px 12px;color:var(--color-text-tertiary);font-size:12px}
.qb-adapt-head.is-parent{font-weight:600}
.qb-adapt-head .qb-text-action{margin-left:auto}
.qb-adapt-cand{display:inline-flex;align-items:center;justify-content:center;min-width:22px;height:22px;padding:0 5px;border:1px solid var(--color-border);border-radius:6px;background:var(--color-surface);color:var(--color-text-secondary);font-size:12px;cursor:pointer}
.qb-adapt-cand.ok{border-color:var(--color-success-soft);color:var(--color-success)}
.qb-adapt-cand.warn{border-color:var(--color-warning-soft);color:var(--color-warning)}
.qb-adapt-cand.bad{border-color:var(--color-primary-border);color:var(--color-primary)}
.qb-adapt-cand.on{border-color:var(--color-primary);background:var(--color-primary);color:var(--color-primary-foreground);font-weight:600}
.qb-adapt-label{display:flex;align-items:flex-start;justify-content:center;background:var(--color-surface-hover);padding:10px 4px;color:var(--color-text-tertiary);font-size:12px}
.qb-adapt-cell{min-width:0;padding:10px 14px;background:var(--color-surface);font-size:16px;line-height:1.8;color:var(--color-text-secondary);white-space:pre-wrap;word-break:break-word}
.qb-adapt-cell.is-parent{background:var(--color-surface-hover);color:var(--color-text-secondary)}
.qb-adapt-cell textarea,.qb-adapt-cell input{display:block;box-sizing:border-box;width:100%;border:0;background:transparent;padding:0;font:inherit;font-size:16px;line-height:1.8;color:var(--color-text-primary);resize:none}
.qb-adapt-cell textarea:focus,.qb-adapt-cell input:focus{outline:none}
.qb-adapt-cell .qb-ae-stem{font-weight:600}
.qb-adapt-cell .qb-ae-answer{font-weight:600}
.qb-ae-type{height:26px;padding:0 6px;border:1px solid var(--color-border);border-radius:5px;background:var(--color-surface);font-size:12px;color:var(--color-text-secondary)}
.qb-ae-add-material{color:var(--color-warning);font-size:13px}
.qb-adapt-empty{display:flex;align-items:center;justify-content:center;min-height:280px;color:var(--color-text-tertiary);font-size:14px}
.qb-adapt-validation{margin:10px 0 0;padding:9px 11px;border-radius:6px;background:var(--color-success-soft);color:var(--color-success);font-size:12px;line-height:1.6}
.qb-adapt-validation.error{background:var(--color-primary-soft);color:var(--color-primary)}
.qb-adapt-validation.warn{background:var(--color-warning-soft);color:var(--color-warning)}
/* 质量摘要 Chip + 详情抽屉（V2.2 §10-§12）：默认收起，点 Chip 展开 */
.qb-adapt-chips{display:inline-flex;flex-wrap:wrap;align-items:center;gap:5px;cursor:pointer;border:0;background:none;padding:0}
.qb-adapt-chip{display:inline-flex;align-items:center;height:22px;padding:0 8px;border:1px solid var(--color-border);border-radius:6px;background:var(--color-surface);color:var(--color-text-secondary);font-size:12px;white-space:nowrap}
.qb-adapt-chip.is-ok{border-color:var(--color-success-soft);color:var(--color-success)}
.qb-adapt-chip.is-warn{border-color:var(--color-warning-soft);color:var(--color-warning)}
.qb-adapt-chip.is-bad{border-color:var(--color-primary-border);color:var(--color-primary)}
.qb-adapt-drawer{position:absolute;top:0;right:0;bottom:0;width:min(420px,92%);z-index:3;background:var(--color-surface);border-left:1px solid var(--qb-line);box-shadow:-12px 0 32px rgba(20,30,40,.12);overflow:auto;padding:14px 18px 20px}
.qb-adapt-drawer[hidden]{display:none}
.qb-adapt-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.qb-adapt-drawer-head b{color:var(--color-text-primary);font-size:15px}
.qb-adapt-drawer-head .icon-btn{font-size:20px}
.qb-adw-score{margin:0 0 10px;display:flex;align-items:baseline;gap:6px}
.qb-adw-score b{font-size:26px;font-weight:600}
.qb-adw-score.is-ok b{color:var(--color-success)}
.qb-adw-score.is-warn b{color:var(--color-warning)}
.qb-adw-score.is-fail b{color:var(--color-primary)}
.qb-adw-score span{color:var(--color-text-tertiary);font-size:12px}
.qb-adw-dims{display:flex;flex-direction:column;gap:7px;margin:0 0 12px}
.qb-adw-dim{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--color-text-secondary)}
.qb-adw-dim em{font-style:normal;flex:0 0 52px}
.qb-adw-dim i{display:inline-block;flex:1;height:4px;border-radius:2px;background:var(--color-border);position:relative;overflow:hidden}
.qb-adw-dim i::after{content:"";position:absolute;left:0;top:0;bottom:0;width:var(--w,0%);background:var(--color-primary);border-radius:2px} .qb-adw-dim b{font-weight:600;color:var(--color-text-secondary)}
.qb-adw-sims{margin:0 0 10px;color:var(--color-text-secondary);font-size:12px}
.qb-adw-sims b{font-weight:600;color:var(--color-text-secondary)}
.qb-adw-sims b.high{color:var(--color-primary)}
.qb-adw-list{margin:0;padding:8px 0 0;border-top:1px solid var(--color-border);list-style:none;color:var(--color-text-secondary);font-size:12px;line-height:1.7;display:flex;flex-direction:column;gap:4px}
.qb-adw-list li::before{content:"· "}
.qb-adw-list li.is-error{color:var(--color-primary)}
.qb-adw-empty{margin:0;color:var(--color-text-tertiary);font-size:12px}
@media(max-width:760px){.qb-adapt-toolbar{gap:6px 12px;padding:10px 14px}.qb-adapt-status{padding:7px 14px}.qb-adapt-workbench{padding:12px 14px}.qb-adapt-grid{grid-template-columns:40px minmax(0,1fr) minmax(0,1fr)}.qb-adapt-cell{padding:8px 10px;font-size:15px}.qb-adapt-cell textarea,.qb-adapt-cell input{font-size:15px}}
/* 导入题目 → 公共题库：逐条核对进度条 */
.qb-queue-bar{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:4px;
  padding:8px 12px;border-radius:8px;background:var(--color-primary-soft);border:1px solid var(--color-primary-border);color:var(--color-primary);font-size:12px}
/* 我的作业独立标签页：顶部工具条 */
.qb-assignment-tools{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:4px;color:var(--color-text-tertiary);font-size:12px}
.qb-assignment-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex-wrap:wrap;flex:0 0 auto}

/* ===== 轻题库页面级布局：左侧教材目录全页固定（sticky），右侧筛选+题目 ===== */
/* body 的 overflow-x:hidden 会把 overflow-y 计算为 auto，破坏后代 sticky；clip 不产生滚动容器 */
body.space-teacher:has(.qb-page-grid){overflow-x:clip}
.qb-page-grid{display:grid;grid-template-columns:282px minmax(0,1fr);gap:22px;align-items:start;margin-top:16px}
.qb-page-grid.no-catalog{grid-template-columns:minmax(0,1fr)}
.qb-page-grid.no-catalog>.qb-catalog{display:none}
.qb-page-grid.no-catalog .qb-mobile-catalog{display:inline-flex}
.qb-main-pane{min-width:0}
.qb-catalog{position:sticky;top:12px;max-height:calc(100vh - 24px);min-height:0;overflow:auto;border-right:1px solid var(--color-border);background:transparent;padding:0 14px 24px 0;scrollbar-width:thin}
.qb-page-grid .qb-results-pane{min-width:0;padding-bottom:72px}
/* 旧 workbench 结构样式退役（保留选择器兼容旧缓存） */
.qb-card-question{display:block;padding:24px 28px 21px;margin:0}
.qb-card-question>.qb-card-body{min-width:0}
.qb-card-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.qb-correct-btn{color:var(--color-warning)}
.qb-correct-btn:hover{color:var(--color-warning)}
/* 收藏：星标按钮 + 搜索行「我的收藏」切换 */
.qb-fav-btn{color:var(--color-text-tertiary)}
.qb-fav-btn:hover{color:var(--color-warning)}
.qb-fav-btn.on{color:var(--color-warning);font-weight:700}
#favToggle.on{border-color:var(--color-warning);color:var(--color-warning);font-weight:600}
.qb-foot-hint{flex:1;min-width:0}

/* ===== 分页：页码窗口 + 上一页/下一页 + 跳转 ===== */
#questionList{scroll-margin-top:72px}
.qb-pagination{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px;padding:22px 0 8px;scroll-margin-bottom:80px}
.qb-page-nums{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.qb-page-btn{min-width:34px;height:34px;padding:0 8px;border:1px solid var(--color-border);border-radius:6px;background:var(--color-surface);color:var(--color-text-secondary);font-family:inherit;font-size:13px;cursor:pointer;text-align:center}
.qb-page-btn:hover{border-color:var(--color-primary-border);color:var(--color-primary)}
.qb-page-btn:active{background:var(--color-primary-soft);border-color:var(--color-primary-border);color:var(--color-primary)}
.qb-page-btn.on{border-color:var(--color-primary);background:var(--color-primary);color:var(--color-primary-foreground);font-weight:600}
.qb-page-btn.on:active{background:var(--color-primary);color:var(--color-primary-foreground)}
.qb-page-btn.qb-page-gap{border-color:transparent;background:transparent;color:var(--color-text-tertiary);min-width:24px;padding:0}
.qb-page-btn.qb-page-gap:hover{color:var(--color-primary)}
.qb-page-nav{height:34px;padding:0 14px;border:1px solid var(--color-border);border-radius:6px;background:var(--color-surface);color:var(--color-text-secondary);font-family:inherit;font-size:13px;cursor:pointer}
.qb-page-nav:hover:not(:disabled){border-color:var(--color-primary-border);color:var(--color-primary)}
.qb-page-nav:disabled{opacity:.45;cursor:not-allowed}
.qb-page-jump{display:flex;align-items:center;gap:7px;margin-left:10px;color:var(--color-text-tertiary);font-size:13px}
.qb-page-jump input{width:56px;height:32px;padding:0 8px;border:1px solid var(--color-border);border-radius:6px;background:var(--color-surface);font-family:inherit;font-size:13px;text-align:center}
.qb-page-jump input:focus{outline:none;border-color:var(--color-primary-border)}
.qb-page-jump button{height:32px;padding:0 12px;border:1px solid var(--color-border);border-radius:6px;background:var(--color-surface-hover);color:var(--color-text-secondary);font-family:inherit;font-size:13px;cursor:pointer}
.qb-page-jump button:hover{border-color:var(--color-primary-border);color:var(--color-primary)}

/* ===== 纠错弹窗 ===== */
.qb-correction-modal{width:min(560px,94vw)}
.qb-correction-question{display:flex;gap:10px;margin:14px 24px 0;padding:11px 13px;border-radius:8px;background:var(--color-surface-hover);color:var(--color-text-secondary);font-size:13px;line-height:1.7}
.qb-correction-question b{flex:0 0 auto;color:var(--color-warning)}
.qb-correction-question span{min-width:0}
.qb-correction-form{display:flex;flex-direction:column;gap:12px;padding:14px 24px 4px}
.qb-correction-form label{font-size:12px;color:var(--color-text-tertiary)}
.qb-correction-form select,.qb-correction-form textarea{display:block;box-sizing:border-box;width:100%;margin-top:5px;padding:9px;border:1px solid var(--color-border);border-radius:6px;background:var(--color-surface);font:inherit;line-height:1.7;resize:vertical}

@media(max-width:1100px){.qb-page-grid{grid-template-columns:240px minmax(0,1fr)}}
@media(max-width:760px){
  .qb-page-grid{display:block}
  .qb-catalog{display:none;position:fixed;z-index:45;top:0;bottom:0;left:0;max-height:none;width:min(310px,88vw);border-radius:0;border-right:1px solid var(--qb-line);box-shadow:12px 0 40px rgba(20,30,40,.16)}
  .qb-catalog.mobile-open{display:block}
  .qb-page-grid.no-catalog>.qb-catalog{display:none}
  .qb-page-jump{display:none}
}

/* ===== 延展复习弹窗（天星6维栏目） ===== */
.qb-extend-modal{width:min(680px,94vw)}
.qb-extend-modal .qb-extend-body{max-height:min(60vh,640px);overflow-y:auto;padding:14px 24px 4px;display:flex;flex-direction:column;gap:14px}
.qb-extend-section{border:1px solid var(--color-border);border-left:3px solid var(--color-primary-border);border-radius:8px;background:var(--color-surface-hover);padding:11px 14px}
.qb-extend-section h4{margin:0 0 7px;font-size:13px;color:var(--color-primary);letter-spacing:.5px}
.qb-extend-section:nth-child(3n+2){border-left-color:var(--color-warning)}
.qb-extend-section:nth-child(3n+2) h4{color:var(--color-warning)}
.qb-extend-section:nth-child(3n){border-left-color:var(--color-success)}
.qb-extend-section:nth-child(3n) h4{color:var(--color-success)}
.qb-extend-text{font-size:13px;line-height:1.85;color:var(--color-text-primary);white-space:pre-wrap;word-break:break-word}
.qb-extend-btn{color:var(--color-primary);font-weight:600}

/* ===== 纠错弹窗：问题类型改为标签点选 ===== */
.qb-corr-kinds { display: block; }
.qb-corr-label { display: block; font-size: 12px; font-weight: 600; color: var(--muted, #888); margin-bottom: 8px; }
.qb-corr-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.qb-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 13px; border-radius: 6px; cursor: pointer;
  border: 1px solid var(--border, var(--color-border)); background: var(--card, var(--color-surface));
  color: var(--text, #333); font: inherit; font-size: 13px; line-height: 1;
  transition: all .15s ease;
}
.qb-chip:hover { border-color: var(--color-primary); color: var(--color-primary); }
.qb-chip.on {
  background: var(--color-primary); border-color: var(--color-primary); color: var(--color-primary-foreground); font-weight: 600;
}
.qb-chip.on::before { content: "✓"; font-size: 12px; }
.qb-chip:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

/* ===== 教材目录「课」节点：± 只展开，点课名同时筛选本课全部框题 ===== */
.qb-unit-row{position:relative;display:flex;align-items:center;gap:7px;width:100%;padding:3px 7px 3px 14px;border:0;background:transparent}
.qb-unit-row::before{content:"";position:absolute;left:-14px;top:11px;width:10px;border-top:1px dashed var(--color-border)}
.qb-unit-row .qb-tree-toggle{flex:0 0 18px;border:0;cursor:pointer;font:inherit}
.qb-unit-name{flex:1;min-width:0;padding:6px 0;border:0;background:transparent;color:var(--color-text-secondary);text-align:left;font-family:inherit;font-size:13px;line-height:1.5;cursor:pointer}
.qb-unit-name:hover,.qb-unit-name.on{color:var(--color-primary)}
.qb-unit-name.on{font-weight:600}

/* ===== 改编弹窗 · 生成中占位 ===== */
.qb-adapt-loading{display:flex;align-items:center;gap:8px;padding:30px 2px;color:var(--color-text-tertiary);font-size:13px}
.qb-adapt-loading i{width:7px;height:7px;border-radius:8px;background:var(--color-primary);opacity:.3;animation:qbAdaptPulse 1s infinite}
.qb-adapt-loading i:nth-child(2){animation-delay:.16s}
.qb-adapt-loading i:nth-child(3){animation-delay:.32s}
.qb-adapt-loading span{margin-left:4px}
.qb-adapt-validation{display:flex;flex-direction:column;gap:3px}
.qb-adapt-validation b{font-weight:600}
.qb-adapt-validation span::before{content:"· "}
@keyframes qbAdaptPulse{0%,100%{opacity:.25;transform:translateY(0)}50%{opacity:1;transform:translateY(-3px)}}
@media(prefers-reduced-motion:reduce){.qb-adapt-loading i{animation:none}}
/* ===== 智能排版（①②③ 分行、材料/设问/解析分块） ===== */
.qb-content-block .qb-line{margin:0;line-height:1.85}
.qb-content-block .qb-line + .qb-line{margin-top:3px}
.qp-mis-stem{white-space:pre-line}

/* ===== 阅读体验改造：宽屏布局、首屏压缩、筛选横排（页面级覆盖） ===== */
.question-page{max-width:var(--width-workbench)}
.qb-topbar{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin:0 0 12px;border-bottom:1px solid var(--qb-line)}
.qb-topbar .qb-tabs{margin:0;border:0;gap:20px}
.qb-topbar-actions{display:flex;align-items:center;gap:8px;padding-bottom:6px;flex-wrap:wrap}
.qb-topbar-actions .btn{height:32px;padding:0 14px;font-size:13px;border-radius:6px;white-space:nowrap;flex-shrink:0}
.qb-topbar-actions .qb-text-action{padding:6px 8px;color:var(--color-text-tertiary);font-size:13px}
.qb-topbar-actions .qb-text-action:hover{color:var(--qb-accent);text-decoration:none}
.qb-topbar-actions .qb-text-action.on{color:var(--qb-accent);font-weight:600}

.qb-page-grid{grid-template-columns:250px minmax(0,1fr);gap:20px;margin-top:0}
.qb-catalog{padding:0 14px 16px 0;top:10px;background:var(--color-surface);border-right:1px solid var(--color-border)}
.qb-catalog-head{align-items:center;padding:2px 6px 8px}
.qb-catalog-head h2{margin:0;color:var(--color-text-primary);font-size:15px;font-weight:600}
.qb-catalog-all{padding:8px 10px;font-size:13px}
.qb-book-row{font-size:14px}
.qb-unit-name{font-size:13px}
.qb-frame-row{font-size:13px}
.qb-knowledge-row{font-size:12px}
.qb-frame-list{padding-left:0;margin-left:0;border-left:0}
.qb-unit-list{padding-left:0;margin-left:0;border-left:0}
.qb-knowledge-list{margin-left:0;padding-left:0;border-left:0}

.qb-filter-panel{padding:12px 0 8px}
.qb-search-row{align-items:center;gap:8px}
.qb-search input{height:38px;padding:0 14px 0 34px;border-radius:6px;font-size:14px}
.qb-search span{top:50%;left:12px;transform:translateY(-50%);font-size:16px}
#clearFilters{padding:7px 10px;font-size:13px}
#favToggle{padding:7px 10px;font-size:13px}
.qb-filter-groups{margin-top:10px}
.qb-filter-group{min-height:44px;gap:12px}
.qb-filter-label{flex:0 0 44px;font-size:13px}
.qb-choice-list{gap:20px}
.qb-choice{padding:6px 2px;font-size:14px}
.qb-filter-more{align-items:center}
.qb-more-row{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.qb-year-pick{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--color-text-secondary);white-space:nowrap}
.qb-year-pick select{height:34px;min-width:8em;padding:0 10px;border:1px solid var(--color-border-strong);border-radius:var(--radius-control,6px);background:var(--color-surface);color:var(--color-text-primary);font:inherit;font-size:13px}
.qb-inline-select{display:inline-flex;align-items:center;flex-shrink:0;gap:4px;font-size:13px;white-space:nowrap;height:34px}
.qb-inline-select select{height:34px;padding:0 10px;border:1px solid var(--color-border-strong);border-radius:6px;background:var(--color-surface);color:var(--color-text-primary);font-size:13px;white-space:nowrap}
/* 有图表勾选：与下拉同高、同一视觉层级 */
.qb-fig-check{display:inline-flex;align-items:center;gap:6px;flex-shrink:0;height:34px;padding:0 12px;border:1px solid var(--color-border-strong);border-radius:6px;background:var(--color-surface);font-size:13px;color:var(--color-text-primary);white-space:nowrap;cursor:pointer;user-select:none}
.qb-fig-check input{width:15px;height:15px;accent-color:var(--color-primary);cursor:pointer}
.qb-fig-check:has(input:checked){border-color:var(--color-primary);color:var(--color-primary)}
.qb-sort-pick{flex-shrink:0;margin-left:auto;white-space:nowrap}
/* 地区：宽面板展开（左侧分组名 + 右侧横向 chip 多列铺开） */
.qb-region-picker{position:relative}
.qb-region-trigger{display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 12px;border:1px solid var(--color-border-strong);border-radius:6px;background:var(--color-surface);color:var(--color-text-primary);font:inherit;font-size:13px;cursor:pointer}
.qb-region-trigger::after{content:"";width:6px;height:6px;margin-top:-3px;border-right:1.5px solid var(--color-text-tertiary);border-bottom:1.5px solid var(--color-text-tertiary);transform:rotate(45deg)}
.qb-region-trigger:hover,.qb-region-trigger[aria-expanded="true"]{border-color:var(--color-primary);color:var(--color-primary)}
.qb-region-panel{position:absolute;left:0;top:calc(100% + 6px);z-index:40;width:min(620px,86vw);padding:10px 16px 14px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:8px;box-shadow:var(--shadow-overlay)}
.qb-region-panel[hidden]{display:none}
.qb-region-panel-head{display:flex;gap:20px;padding:2px 0 8px;border-bottom:1px solid var(--color-border)}
.qb-region-all{border:0;background:none;padding:2px 0;color:var(--color-text-secondary);font:inherit;font-size:13px;cursor:pointer}
.qb-region-all:hover{color:var(--color-text-primary)}
.qb-region-all.on{color:var(--color-primary);font-weight:700}
.qb-region-group{display:flex;gap:12px;padding:9px 0;border-bottom:1px solid var(--color-border)}
.qb-region-group:last-child{border-bottom:0;padding-bottom:2px}
.qb-region-group-name{flex:0 0 62px;padding-top:3px;color:var(--color-text-tertiary);font-size:12px}
.qb-region-chips{display:flex;flex-wrap:wrap;gap:4px 20px;flex:1;min-width:0}
.qb-region-chip{border:0;background:none;padding:3px 0;color:var(--color-text-primary);font:inherit;font-size:13px;white-space:nowrap;cursor:pointer}
.qb-region-chip em{margin-left:3px;color:var(--color-text-tertiary);font-style:normal;font-size:12px}
.qb-region-chip:hover{color:var(--color-primary)}
.qb-region-chip.on{color:var(--color-primary);font-weight:700}
.qb-region-chip.on em{color:var(--color-primary)}
.qb-region-chip.empty{color:var(--color-text-disabled);cursor:default}
.qb-region-chip.empty em{color:var(--color-text-disabled)}

.qb-list-head{padding:10px 0 8px;font-size:13px}
.qb-results-bar{min-height:34px;padding:0 2px 8px;font-size:13px}

.qb-card{border:1px solid var(--color-border);background:var(--color-surface)}
.qb-card:hover,.qb-card.on{border-color:var(--color-primary-border);box-shadow:0 4px 14px rgba(20,30,40,.08)}
.qb-card-body{min-width:0}
.qb-card h3,.qb-card-option,.qb-card-material .qb-content-block{overflow-wrap:anywhere}
.qb-list{padding-bottom:24px}

@media(max-width:1100px){
  .qb-page-grid{grid-template-columns:220px minmax(0,1fr)}
}
@media(max-width:760px){
  .qb-topbar{align-items:flex-start;flex-direction:column;gap:4px}
  .qb-topbar-actions{width:100%;justify-content:flex-end;padding-bottom:6px}
  .qb-search-row{flex-wrap:wrap}
  .qb-search{flex:1 1 100%}
  /* 结果栏：教材目录按钮/标题/计数/排序在窄屏排不下时整组换行，
     每个标签 nowrap + flex-shrink:0，禁止「教材目录」被压成逐字竖排 */
  .qb-results-bar{flex-wrap:wrap;row-gap:6px;gap:8px 12px}
  .qb-mobile-catalog{flex:0 0 auto;white-space:nowrap}
  .qb-results-bar>span{flex:0 0 auto;white-space:nowrap}
  .qb-result-count{white-space:nowrap}
  .qb-sort-pick{margin-left:auto;white-space:nowrap}
  .qb-more-row{gap:12px}
  .qb-region-panel{width:min(620px,94vw)}
}

/* 导入工作台：阶段、计数、问题题。不用卡片和阴影。 */
.qb-import-report{display:flex;flex-direction:column;gap:12px;padding:4px 0 12px}
.qb-import-stages{display:flex;flex-wrap:wrap;gap:8px 16px;margin:0;padding:0;list-style:none;font-size:13px;color:var(--color-text-secondary)}
.qb-import-stages li{white-space:nowrap}
.qb-import-counts{display:flex;flex-wrap:wrap;gap:8px 16px;margin:0;font-size:14px;color:var(--color-text-primary)}
.qb-import-counts b{font-weight:600}
.qb-import-foot{flex-wrap:wrap;align-items:center;gap:8px}
.qb-import-book{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--color-text-secondary);margin-right:auto}
.qb-import-book select{width:auto;min-width:220px;height:36px}
.qb-import-reason{margin:0 0 8px;font-size:13px;line-height:1.5;color:var(--color-text-secondary)}
.qb-draft-list{max-height:42vh;overflow:auto}

/* 导入草稿中的图片/图表缩略条 */
.qb-draft-imgs{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.qb-draft-imgs figure{margin:0;display:flex;flex-direction:column;align-items:center;gap:4px}
.qb-draft-imgs img{max-width:120px;max-height:96px;object-fit:contain;border:1px solid var(--color-border);border-radius:var(--radius-control);background:var(--color-surface)}
.qb-draft-imgs figcaption{font-size:12px;color:var(--color-text-tertiary)}

/* 作业讲评课件预览：16:9 一题一页，点击后答案淡入 */
body.epv-open { overflow: hidden; }
.epv-mask {
  position: fixed; inset: 0; z-index: 80;
  display: grid; place-items: center; padding: 24px;
  background: rgba(17, 24, 39, 0.42);
}
.epv-mask[hidden] { display: none; }
.epv-sheet {
  width: min(1040px, calc(100vw - 32px));
  max-height: calc(100dvh - 32px);
  display: flex; flex-direction: column; gap: 12px;
  padding: 16px 16px 12px;
  background: var(--color-surface, var(--color-surface));
  border: 1px solid var(--color-border, var(--color-border));
  border-radius: var(--radius-overlay);
  box-shadow: var(--shadow-overlay);
}
.epv-bar { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.epv-bar h2 { margin: 0; font-size: 18px; font-weight: 650; }
.epv-bar p { margin: 4px 0 0; color: var(--color-text-secondary, var(--color-text-tertiary)); font-size: 13px; line-height: 1.5; }
.epv-x {
  width: 32px; height: 32px; border: 0; background: transparent;
  color: var(--color-text-tertiary, var(--color-text-tertiary)); font-size: 22px; line-height: 1; cursor: pointer;
  border-radius: var(--radius-control);
}
.epv-x:hover { background: var(--color-surface-muted, var(--color-surface-hover)); color: var(--color-text-primary, var(--color-text-primary)); }
.epv-stage-wrap { min-width: 0; }
.epv-stage {
  container-type: inline-size;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--color-surface);
  border: 1px solid var(--color-border, var(--color-border));
  box-shadow: var(--shadow-paper);
  color: var(--color-text-primary, var(--color-text-primary));
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 1.67cqw;
  line-height: 1.45;
  overflow: hidden;
  cursor: pointer;
}
.epv-stage:focus { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.epv-cover {
  height: 100%; display: flex; flex-direction: column; justify-content: center;
  padding: 0 8%; background: var(--color-primary); color: var(--color-primary-foreground);
}
.epv-cover h3 { margin: 0; font-size: 2.5em; font-weight: 700; line-height: 1.25; }
.epv-cover p { margin: 0.6em 0 0; font-size: 1.25em; color: #f6d6d6; }
.epv-cover-sub { font-size: 1em !important; color: var(--color-primary-soft) !important; }
.epv-q { height: 100%; display: flex; flex-direction: column; }
.epv-hd {
  display: flex; align-items: center; justify-content: space-between;
  height: 10.4%; padding: 0 4.2%;
  background: var(--color-primary); color: var(--color-primary-foreground); font-size: 1.5em; font-weight: 700;
}
.epv-hd span:last-child { font-size: 0.72em; font-weight: 500; color: #f6d6d6; }
.epv-body { flex: 1; min-height: 0; overflow: auto; padding: 1.6% 4.2% 0; }
.epv-material { margin: 0 0 0.6em; color: var(--color-text-primary); }
.epv-material b { display: block; margin-bottom: 0.2em; color: var(--color-primary); font-size: 0.9em; }
.epv-stem { font-size: 1.35em; line-height: 1.45; }
.epv-opts { margin-top: 0.7em; }
.epv-opt { margin: 0.28em 0; font-size: 1.12em; line-height: 1.4; }
.epv-opt b { color: var(--color-primary); }
.epv-band { flex: none; display: flex; flex-direction: column; gap: 0.45em; padding: 0 4.2% 0.4%; }
.epv-ans, .epv-ana {
  opacity: 0; transform: translateY(6px);
  padding: 0.45em 0.7em;
  transition: opacity .45s ease, transform .45s ease;
}
.epv-ans { background: var(--color-primary-soft); font-size: 1.2em; font-weight: 700; }
.epv-ans b, .epv-ana b { margin-right: 0.6em; color: var(--color-primary); }
.epv-ana { background: var(--color-surface-hover); font-size: 1em; font-weight: 400; line-height: 1.4; }
.epv-ana b { font-weight: 700; color: var(--color-primary); }
.epv-ans.on, .epv-ana.on { opacity: 1; transform: none; }
.epv-hint { height: 5%; padding: 0 4.2%; color: var(--color-text-tertiary); font-size: 0.75em; }
.epv-foot { display: flex; align-items: center; gap: 8px; }
.epv-foot [data-epv-page] { margin-right: auto; color: var(--color-text-secondary, var(--color-text-tertiary)); font-size: 13px; }
@media (prefers-reduced-motion: reduce) {
  .epv-ans, .epv-ana { transition: none; }
}

/* ===== 题卡排版升级：题号、来源/难度标签、正确选项高亮、默写题层级 ===== */
/* 题号在题干左侧，flex 布局 */
.qb-card-question{display:flex;align-items:flex-start;gap:10px;padding:16px 24px;margin:0}
.qb-question-index{flex:0 0 30px;padding-top:1px;font-family:inherit;font-size:18px;font-weight:500;line-height:1.92;color:var(--color-text-primary);user-select:none}
.qb-card-body{flex:1;min-width:0}
/* 题干段落：替代原 h3，支持多段与小标题 */
.qb-stem-text{margin:0;font-family:inherit;font-size:16px;font-weight:400;line-height:1.9;color:var(--color-text-primary)}
.qb-stem-text .qb-line{margin:0}
.qb-stem-text .qb-line + .qb-line{margin-top:6px}
/* 默写题/教材小标题加粗 */
.qb-line.qb-line-heading{font-weight:600;color:var(--color-text-primary)}
/* 挖空：一条填空线。字符透明，避免下划线字形和边框叠成上下两条 */
.qb-blank{display:inline-block;min-width:4em;border-bottom:1px solid var(--color-text-primary);text-decoration:none;color:transparent;line-height:1;vertical-align:baseline}
/* 管道表格（过关默写等 docx 导入的表格结构）：题干与答案区通用 */
.qb-table{width:100%;border-collapse:collapse;margin:10px 0 14px;font-size:15px;line-height:1.75}
.qb-table th,.qb-table td{border:1px solid var(--color-border);padding:8px 12px;text-align:left;vertical-align:top}
.qb-table th{background:var(--color-surface-hover);font-weight:600}
/* 长句表头允许换行；过宽表格在局部横向滚动，不撑破版面 */
.qb-table{display:block;overflow-x:auto}
.qb-table td .qb-blank{min-width:3em}
.qb-table .qb-recite-ans{color:var(--color-text-primary)}
/* meta 行：难度橙色、来源蓝色 */
.qb-meta-text.difficulty{color:var(--color-warning);font-weight:500}
.qb-meta-text.source{color:var(--color-primary);font-weight:500}
.qb-meta-text.knowledge{color:var(--color-text-tertiary)}
/* 正确选项高亮（解析展开时） */
.qb-card-option.correct{position:relative;padding:2px 8px;margin:0 -8px;border-radius:4px;background:var(--color-success-soft);color:var(--color-success)}
.qb-card-option.correct b{color:var(--color-success)}
.qb-card-option.correct::before{content:"✓";position:absolute;left:-2px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--color-success);font-weight:700}
/* 材料题段落首行缩进 */
.qb-card-material .qb-line{text-indent:2em}
.qb-card-material .qb-line + .qb-line{margin-top:6px}
/* 窄屏题号 */
@media(max-width:760px){
  .qb-card-question{gap:8px;padding:18px 14px}
  .qb-question-index{flex-basis:24px;font-size:16px}
  .qb-question-index.is-recite{flex-basis:auto}
  .qb-stem-text{font-size:16px;line-height:1.85}
  .qb-notebook-cover-page{min-height:210px;padding:36px 20px}
  .qb-notebook-cover-page h1{font-size:24px}
  .qb-notebook-cover-image{width:136px;height:192px}
  .qb-notebook-assignment-head{display:block}
  .qb-notebook-assignment-actions{justify-content:flex-start;margin-top:10px}
  .qb-notebook-options{grid-template-columns:1fr}
}

/* 默写题号高于内部层级；没挖空的「注」收成小字 */
.qb-question-index.is-recite{flex:0 0 auto;min-width:4.5em;white-space:nowrap;font-size:15px}
.qb-stem-text .qb-line-l1,.qb-recite-answer .qb-line-l1{padding-left:1.5em}
.qb-stem-text .qb-line-l2,.qb-recite-answer .qb-line-l2{padding-left:3em}
.qb-line-note{color:var(--color-text-secondary);font-size:13px}

/* 筛选可折叠；年份年级是一行文字选项 */
.qb-filter-groups[hidden]{display:none}
.qb-filter-summary{align-self:center;color:var(--color-text-secondary);font-size:13px;white-space:nowrap}
#filterToggle.on{color:var(--color-primary);font-weight:600}

/* 作业本：架上是一本本子；点开后作业横排 */
.qb-notebook-cover{padding:4px 0 16px;border-bottom:1px solid var(--color-border,var(--color-border))}
.qb-notebook-cover h2{margin:8px 0 0;font-size:22px;font-weight:600;color:var(--color-text-primary)}
.qb-notebook-cover p{margin:8px 0 0;color:var(--color-text-secondary);font-size:14px}
.qb-notebook-filterbar{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding:12px 0;border-bottom:1px solid var(--color-border,var(--color-border));color:var(--color-text-secondary,var(--color-neutral));font-size:13px}
.qb-notebook-filterbar>strong{color:var(--color-text-primary,var(--color-text-primary));font-size:14px;font-weight:600}
.qb-notebook-filterbar label{display:flex;align-items:center;gap:6px;white-space:nowrap}
.qb-notebook-filterbar select{height:32px;padding:0 24px 0 8px;border:1px solid var(--color-border-strong,var(--color-border-strong));border-radius:var(--radius-control,6px);background:var(--color-surface,var(--color-surface));color:var(--color-text-primary,var(--color-text-primary));font:inherit}
.qb-notebook-filter-count{margin-left:auto;color:var(--color-text-tertiary,var(--color-text-tertiary));font-size:12px}
.qb-notebook-filterbar .btn{height:32px}
.qb-notebook-filter-empty{display:flex;min-height:120px;flex-direction:column;justify-content:center;gap:6px;color:var(--color-text-secondary,var(--color-neutral));font-size:13px}
.qb-notebook-filter-empty strong{color:var(--color-text-primary,var(--color-text-primary));font-size:15px;font-weight:600}
.qb-shelf{display:flex;align-items:flex-start;flex-wrap:wrap;gap:24px 16px;padding:16px 0 8px}
.qb-book-entry{display:flex;width:132px;flex-direction:column;gap:8px;min-width:0}
.qb-book{display:block;width:100%;height:176px;padding:0;overflow:hidden;border:1px solid var(--color-border,var(--color-border));border-radius:var(--radius-flat,0);background:var(--color-surface,var(--color-surface));color:var(--color-text-primary);font:inherit;text-align:left;cursor:pointer}
.qb-book-cover-thumb{display:block;width:100%;height:100%;object-fit:cover;object-position:center top}
.qb-book-cover-empty{display:flex;width:100%;height:100%;align-items:center;justify-content:center;padding:12px;box-sizing:border-box;color:var(--color-text-tertiary,var(--color-text-tertiary));font-size:12px;text-align:center}
.qb-daily-cover{display:flex;width:100%;height:100%;box-sizing:border-box;flex-direction:column;justify-content:space-between;padding:18px 12px 14px;border-left:12px solid var(--color-primary);background:var(--color-warning-soft);color:var(--color-text-primary);text-align:left}
.qb-daily-cover small{font-size:12px;letter-spacing:.08em;color:var(--color-text-secondary)}
.qb-daily-cover strong{font-size:25px;line-height:1.35;font-weight:700;letter-spacing:.08em}
.qb-daily-cover>span{padding-top:8px;border-top:1px solid var(--color-primary-muted);font-size:12px;line-height:1.35;color:var(--color-text-secondary)}
.qb-daily-cover.is-gaokao{border-left-color:var(--color-primary);background:var(--color-primary-soft)}
.qb-daily-cover.is-gaokao strong{font-size:20px;letter-spacing:.08em}
.qb-daily-cover.is-gaokao small,.qb-daily-cover.is-gaokao>span{white-space:nowrap}
.qb-daily-cover.is-gaokao>span{border-top-color:var(--color-primary-border)}
.qb-book-label{display:flex;min-height:47px;flex-direction:column;gap:3px}
.qb-book-label strong{font-size:14px;font-weight:600;line-height:1.45;color:var(--color-text-primary,var(--color-text-primary))}
.qb-book-label span{font-size:12px;line-height:1.35;color:var(--color-text-tertiary,var(--color-text-tertiary))}
.qb-book.is-sync{background:var(--color-surface,var(--color-surface))}
.qb-book:hover{border-color:var(--color-border-strong,var(--color-border-strong))}
.qb-book.is-add{display:flex;align-items:center;justify-content:center;background:transparent;border-style:dashed;font-size:14px;font-weight:600}
.qb-hw-row{display:flex;gap:0;overflow-x:auto;padding:16px 0 8px}
.qb-hw-item{flex:0 0 260px;margin-right:16px;padding:0 16px 12px 0;border-right:1px solid var(--color-border,var(--color-border))}
.qb-hw-item h3{margin:4px 0;font-size:16px;font-weight:600}
.qb-hw-item p{margin:0 0 4px;color:var(--color-text-secondary);font-size:13px}
.qb-hw-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.qb-assignment-card{align-items:center;gap:16px;padding:12px 0;border:0;border-bottom:1px solid var(--color-border);border-radius:0;background:transparent;box-shadow:none}
.qb-assignment-card.active{border-color:var(--color-border);background:transparent}
.qb-assignment-card h3{margin:4px 0;font-size:16px}
.qb-assignment-status{display:inline;padding:0;border-radius:0;background:transparent;color:var(--color-primary);font-size:13px}
.qb-assignment-empty{padding:24px 0;border:0;border-radius:0;background:transparent;text-align:left}
.qb-notebook-paper{max-width:920px;padding:16px 0 48px}
.qb-notebook-workspace{display:grid;grid-template-columns:276px minmax(0,1fr);gap:24px;min-height:620px;padding:16px 0 48px}
.qb-notebook-sidebar{min-width:0;border-right:1px solid var(--color-border);padding-right:16px}
.qb-notebook-sidebar-head{padding:0 0 16px;border-bottom:1px solid var(--color-border)}
.qb-notebook-sidebar-head .btn{margin-bottom:16px}
.qb-notebook-sidebar-head h2{margin:6px 0 4px;font-size:19px;line-height:1.45;color:var(--color-text-primary)}
.qb-notebook-sidebar-head>span{font-size:12px;color:var(--color-text-tertiary)}
.qb-notebook-sidebar-title{display:flex;align-items:center;justify-content:space-between;padding:16px 0 8px;color:var(--color-text-primary);font-size:14px}
.qb-notebook-sidebar-title span{font-size:12px;color:var(--color-text-tertiary)}
.qb-notebook-nav{display:flex;flex-direction:column;gap:1px;max-height:calc(100vh - 280px);overflow-y:auto}
.qb-notebook-nav-item{display:grid;grid-template-columns:24px minmax(0,1fr);gap:8px;width:100%;padding:10px 8px;border:0;border-left:2px solid transparent;background:transparent;color:var(--color-text-secondary);text-align:left;cursor:pointer}
.qb-notebook-nav-item:hover{background:var(--color-surface-hover);color:var(--color-text-primary)}
.qb-notebook-nav-item.is-current{border-left-color:var(--color-primary);background:var(--color-primary-soft);color:var(--color-primary)}
.qb-notebook-nav-no{font-size:12px;line-height:1.6;color:var(--color-text-tertiary)}
.qb-notebook-nav-item.is-current .qb-notebook-nav-no{color:var(--color-primary);font-weight:600}
.qb-notebook-nav-copy{display:flex;min-width:0;flex-direction:column;gap:3px}
.qb-notebook-nav-copy strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px;font-weight:600;line-height:1.45}
.qb-notebook-nav-copy small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px;line-height:1.35;color:var(--color-text-tertiary)}
.qb-notebook-nav-item.is-current .qb-notebook-nav-copy small{color:var(--color-primary)}
.qb-notebook-main{min-width:0}
.qb-notebook-content-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;padding:0 0 16px;border-bottom:1px solid var(--color-border)}
.qb-notebook-content-head h1{margin:6px 0 0;font-size:24px;line-height:1.35;color:var(--color-text-primary)}
.qb-notebook-content-tools{display:flex;align-items:center;gap:12px}
.qb-notebook-content-tools p{margin:0;color:var(--color-text-secondary);font-size:13px;text-align:right}
.qb-notebook-main>.qb-notebook-contents{padding-top:20px}
.qb-notebook-cover-page{min-height:260px;padding:56px 48px 48px;border-bottom:2px solid var(--color-text-primary);display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center}
.qb-notebook-cover-page h1{margin:12px 0 8px;font-size:30px;line-height:1.35;color:var(--color-text-primary)}
.qb-notebook-cover-image{display:block;width:170px;height:240px;object-fit:cover;object-position:center top;margin-bottom:22px;box-shadow:var(--shadow-paper);border:1px solid var(--color-border)}
.qb-notebook-cover-page p:not(.qb-eyebrow){margin:0;color:var(--color-text-secondary);font-size:16px}
.qb-notebook-cover-page span{margin-top:32px;color:var(--color-text-tertiary);font-size:12px}
.qb-notebook-daily-cover-page{min-height:260px;background:var(--color-warning-soft);border-left:12px solid var(--color-primary);align-items:flex-start;text-align:left}
.qb-notebook-daily-cover-page h1{margin-top:24px;font-size:34px;letter-spacing:.08em}
.qb-notebook-daily-cover-page p{font-size:16px}
.qb-notebook-daily-cover-page span{margin-top:auto}
.qb-notebook-daily-mark{font-size:13px;letter-spacing:.08em;color:var(--color-text-secondary)}
.qb-notebook-directory,.qb-notebook-contents{padding-top:24px}
.qb-notebook-section-head{display:flex;align-items:baseline;gap:12px;padding-bottom:10px;border-bottom:1px solid var(--color-border)}
.qb-notebook-section-head h2{margin:0;font-size:18px;color:var(--color-text-primary)}
.qb-notebook-section-head span{font-size:12px;color:var(--color-text-tertiary)}
.qb-book-toc-item{display:grid;grid-template-columns:28px minmax(0,1fr);column-gap:8px;padding:11px 8px;border-bottom:1px solid var(--color-border);text-decoration:none;color:var(--color-text-primary)}
.qb-book-toc-item:hover{background:var(--color-surface-hover)}
.qb-book-toc-item>span{grid-row:span 2;color:var(--color-text-tertiary);font-size:13px}
.qb-book-toc-item strong{font-size:14px;font-weight:600}
.qb-book-toc-item small{margin-top:3px;color:var(--color-text-tertiary);font-size:12px}
.qb-notebook-assignment{padding:24px 0 28px;border-bottom:1px solid var(--color-border);scroll-margin-top:24px}
.qb-notebook-assignment-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}
.qb-notebook-assignment-head p{margin:0 0 3px;font-size:12px;color:var(--color-text-tertiary)}
.qb-notebook-assignment-head h3{margin:0;font-size:19px;color:var(--color-text-primary)}
.qb-notebook-assignment-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:flex-end;color:var(--color-text-tertiary);font-size:12px}
.qb-notebook-assignment-actions .btn{height:32px}
.qb-notebook-question{padding:16px 0;border-bottom:1px solid var(--color-border)}
.qb-notebook-question:last-child{border-bottom:0}
.qb-notebook-question-meta{display:flex;align-items:center;gap:8px;margin-bottom:6px;font-size:12px;color:var(--color-text-tertiary)}
.qb-notebook-question-meta>b{font-size:16px;color:var(--color-text-primary)}
.qb-notebook-question-meta code{font-size:11px;color:var(--color-text-tertiary)}
.qb-notebook-question-points{display:flex;gap:6px;margin:4px 0 8px;color:var(--color-text-secondary);font-size:12px;line-height:1.5}
.qb-notebook-question-points span:first-child{color:var(--color-primary);font-weight:600;white-space:nowrap}
.qb-notebook-stem{font-size:15px;line-height:1.8;color:var(--color-text-primary);white-space:pre-line}
.qb-notebook-material{margin:6px 0 8px;padding:9px 12px;border-left:3px solid var(--color-primary);background:var(--color-background);font-size:14px;line-height:1.75;color:var(--color-text-secondary);white-space:pre-line}
.qb-notebook-options{display:grid;grid-template-columns:1fr 1fr;gap:3px 20px;margin-top:8px}
.qb-notebook-option{display:grid;grid-template-columns:24px 1fr;gap:5px;font-size:14px;line-height:1.7;color:var(--color-text-secondary)}
.qb-notebook-option>b{color:var(--color-text-primary)}
.qb-notebook-missing{padding:16px 0;margin:0;color:var(--color-warning)}
.qb-notebook-assignment.is-recite .qb-notebook-question{padding-top:18px;padding-bottom:18px}
.qb-notebook-assignment.is-recite .qb-notebook-stem{font-size:16px;line-height:1.9}
.qb-notebook-assignment.is-recite .qb-line{margin:0 0 7px}
.qb-notebook-assignment.is-recite .qb-line:last-child{margin-bottom:0}

/* ===== 布置作业链路补充：可点题量指示器 / 作业勾选 / 高亮定位 ===== */
.qb-job-meter{max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:left;font-size:13px}
.qb-job-meter.is-empty{color:var(--color-text-tertiary)}
.qb-job-count{color:var(--qb-accent,var(--color-primary));font-size:15px;font-weight:700}
.qb-hw-head{display:flex;align-items:center;gap:8px;min-height:22px}
.qb-pick{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;flex:none;cursor:pointer}
.qb-pick input{display:block;width:16px;height:16px;margin:0;accent-color:var(--color-primary,var(--color-primary));cursor:pointer}
.qb-pick.is-off{visibility:hidden}
.qb-danger{color:var(--color-primary);border-color:var(--color-primary-border)}
.qb-danger:hover{background:var(--color-primary-soft)}
.qb-hw-item.qb-flash{animation:qb-flash 2.4s ease-out}
@keyframes qb-flash{0%,35%{background:var(--color-warning-soft)}100%{background:transparent}}
.epv-cover.is-split{flex-direction:row;align-items:center;gap:5%;padding:0 8%}
.epv-cover-img{height:66%;width:auto;border-radius:4px;box-shadow:0 6px 24px rgba(0,0,0,.22)}
.epv-cover-text{flex:1;min-width:0}

@media(max-width:760px){
  .qb-notebook-filterbar{align-items:flex-start;gap:8px 12px}
  .qb-notebook-filterbar>strong{width:100%}
  .qb-notebook-filter-count{margin-left:0}
  .qb-notebook-cover-image{width:136px;height:192px}
  .qb-notebook-workspace{display:block;padding-top:8px}
  .qb-notebook-sidebar{border-right:0;border-bottom:1px solid var(--color-border);padding:0 0 16px}
  .qb-notebook-nav{max-height:240px}
  .qb-notebook-content-head{display:block;padding-top:20px}
  .qb-notebook-content-tools{align-items:flex-start;flex-direction:column;margin-top:8px}
  .qb-notebook-content-tools p{text-align:left}
}

/* ===== 题库质检面板（管理员）：克制扁平，仅浮层使用一层容器 ===== */
#openAudit.is-healthy{color:var(--color-success)}
#openAudit.is-issues{color:var(--color-warning)}
.qb-audit-badge{display:inline-block;margin-left:6px;min-width:18px;padding:0 5px;height:18px;line-height:18px;border-radius:var(--radius-control);background:var(--color-warning);color:var(--color-text-on-strong);font-size:12px;text-align:center;box-sizing:border-box}
.qb-audit-badge[hidden]{display:none}
.qb-audit-modal{width:min(980px,96vw)}
.qb-audit-body{padding:16px 24px;display:flex;flex-direction:column;gap:16px}
.qb-audit-summary{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding-bottom:12px;border-bottom:1px solid var(--qb-line)}
.qb-audit-meta{display:flex;flex-wrap:wrap;gap:16px;font-size:13px;color:var(--qb-muted)}
.qb-audit-meta b{color:var(--qb-ink);font-weight:600}
.qb-audit-stats{display:flex;gap:16px;font-size:13px;color:var(--qb-muted)}
.qb-audit-stat b{font-weight:600}
.c-error{color:var(--color-error)}
.c-warn{color:var(--color-warning)}
.c-success{color:var(--color-success)}
.c-muted{color:var(--color-text-tertiary)}
.qb-audit-type-groups{overflow-x:auto}
.qb-audit-type-table{width:100%;border-collapse:collapse;font-size:13px}
.qb-audit-type-table th,.qb-audit-type-table td{padding:6px 12px;text-align:left;border-bottom:1px solid var(--qb-line);white-space:nowrap}
.qb-audit-type-table th{color:var(--qb-muted);font-weight:500}
.qb-audit-type-table td:first-child{font-weight:600;color:var(--qb-ink)}
.qb-audit-toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.qb-audit-result{font-size:13px;color:var(--color-success)}
.qb-audit-filters{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding-bottom:12px;border-bottom:1px solid var(--qb-line)}
.qb-audit-tabs{display:flex;gap:18px;border-bottom:1px solid var(--qb-line);margin-bottom:-13px}
.qb-audit-tabs button{border:0;background:none;padding:8px 0;color:var(--qb-muted);font-size:14px;border-bottom:2px solid transparent;cursor:pointer}
.qb-audit-tabs button.on{color:var(--qb-accent);font-weight:700;border-bottom-color:var(--qb-accent)}
.qb-audit-inline-select{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--qb-muted)}
.qb-audit-inline-select select{height:32px;padding:0 8px;border:1px solid var(--qb-line);border-radius:var(--radius-control);background:var(--color-surface);color:var(--qb-ink);font-size:13px}
.qb-audit-list{display:flex;flex-direction:column;gap:12px;min-height:120px;max-height:46vh;overflow:auto}
.qb-audit-item{padding:12px 0;border-bottom:1px solid var(--qb-line)}
.qb-audit-item:last-child{border-bottom:0}
.qb-audit-item-head{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.qb-audit-sev-tag{font-size:12px;padding:1px 8px;border-radius:var(--radius-control);border:1px solid currentColor}
.qb-audit-item.sev-error .qb-audit-sev-tag{color:var(--color-error)}
.qb-audit-item.sev-warn .qb-audit-sev-tag{color:var(--color-warning)}
.qb-audit-type-tag{font-size:12px;color:var(--qb-muted)}
.qb-audit-qref{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;color:var(--qb-muted)}
.qb-audit-status-tag{margin-left:auto;font-size:12px;color:var(--qb-muted)}
.qb-audit-item.status-fixed .qb-audit-status-tag{color:var(--color-success)}
.qb-audit-item.status-ignored .qb-audit-status-tag{color:var(--color-text-tertiary)}
.qb-audit-detail{margin:8px 0 0;font-size:14px;line-height:1.7;color:var(--qb-ink)}
.qb-audit-excerpt{margin:6px 0 0;font-size:12px;line-height:1.6;color:var(--qb-muted);white-space:pre-wrap;word-break:break-all}
.qb-audit-fail{margin:6px 0 0;font-size:12px;color:var(--color-error)}
.qb-audit-item-actions{display:flex;gap:8px;margin-top:8px}
.qb-audit-item-actions .btn{height:32px;padding:0 14px;font-size:13px}
.qb-audit-empty{margin:24px 0;text-align:center;font-size:13px;color:var(--qb-muted)}

/* ===== 题型感知浏览：标题、材料、判断与长内容边界 ===== */
.qb-recite-title{margin:0 0 var(--space-3);font-size:18px!important;font-weight:600!important;line-height:1.6!important;color:var(--color-text-primary)}
.qb-type-recite .qb-stem-text{font-size:16px;line-height:1.9}
.qb-type-recite .qb-stem-text .qb-line-heading{font-size:16px;font-weight:600}
.qb-material-section{display:block;padding:0 0 var(--space-3);border-bottom:1px solid var(--color-border)}
.qb-material-section:last-child{padding-bottom:0;border-bottom:0}
.qb-material-section>b{display:block;margin-bottom:var(--space-2);font-size:14px;font-weight:600;color:var(--color-text-secondary)}
.qb-type-material .qb-card-material{padding:var(--space-3) 0;border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border)}
.qb-type-material .qb-card-material .qb-line{text-indent:2em}
.qb-boolean-choices{display:flex;gap:var(--space-6);margin-top:var(--space-4);color:var(--color-text-secondary);font-size:16px}
.qb-card-readable{position:relative}
@media(max-width:760px){.qb-recite-title{font-size:16px!important}}

/* ===== 题库质检中心（qb-quality.js）：范围 / 进度 / 结果 / 问题列表 / 修复工作台 ===== */
.qbq-modal{width:min(960px,96vw)}
.qbq-view{display:flex;flex-direction:column;min-height:320px}
.qbq-view[hidden]{display:none}
.qbq-desc{margin:0 0 var(--space-3);font-size:14px;color:var(--qb-muted)}
.qbq-scope-body{display:flex;flex-direction:column;gap:var(--space-2);padding:var(--space-4) var(--space-6)}
.qbq-radio{display:flex;align-items:flex-start;gap:var(--space-2);padding:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-control);cursor:pointer}
.qbq-radio input[type="radio"]{width:16px;height:16px;flex:none;margin:3px 0 0;padding:0;border:0;background:transparent;accent-color:var(--color-primary)}
.qbq-radio>span{display:flex;flex-direction:column;gap:4px;flex:1;min-width:0;font-size:14px;color:var(--qb-ink)}
.qbq-radio small{font-size:12px;color:var(--qb-muted)}
.qbq-radio select{height:32px;padding:0 var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-control);background:var(--color-surface);font-size:13px;color:var(--qb-ink)}
.qbq-mode-row{display:flex;flex-direction:column;gap:var(--space-2);margin-top:var(--space-2);padding:var(--space-3);background:var(--color-surface-hover);border-radius:var(--radius-control)} .qbq-check{display:flex;align-items:center;gap:var(--space-2);font-size:13px;color:var(--qb-muted);cursor:pointer}
.qbq-progress-body{display:flex;flex-direction:column;gap:var(--space-3);padding:var(--space-4) var(--space-6)}
.qbq-progress-title{margin:0;font-size:16px;color:var(--qb-ink)}
.qbq-bar{height:8px;background:var(--color-surface-active);border-radius:var(--radius-control);overflow:hidden}
.qbq-bar>i{display:block;height:100%;width:0;background:var(--color-primary);transition:width var(--motion) ease}
.qbq-progress-meta{display:flex;justify-content:space-between;gap:var(--space-3);margin:0;font-size:13px;color:var(--qb-muted)}
.qbq-progress-meta span:first-child{color:var(--qb-ink);font-weight:600}
.qbq-stages{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-2);margin:0;padding:var(--space-3);list-style:none;border:1px solid var(--color-border);border-radius:var(--radius-control)} .qbq-stages li{display:flex;align-items:center;gap:var(--space-2);font-size:13px;color:var(--qb-muted)}
.qbq-stages em{font-style:normal;color:var(--qb-muted)}
.qbq-stage-mark{font-family:ui-monospace,Menlo,monospace;color:var(--qb-muted)}
.qbq-stages li.is-active{color:var(--qb-ink);font-weight:600}
.qbq-stages li.is-active .qbq-stage-mark{color:var(--color-primary)}
.qbq-stages li.is-done{color:var(--color-text-secondary)}
.qbq-stages li.is-done .qbq-stage-mark{color:var(--color-success)}
.qbq-hint{margin:0;font-size:12px;color:var(--qb-muted)}
.qbq-when{margin:0;font-size:13px;line-height:1.5;color:var(--qb-ink)}
.qbq-existing{display:flex;flex-direction:column;gap:var(--space-2);padding:var(--space-3);border:1px solid var(--color-border);background:var(--color-surface)}
.qbq-existing p{margin:0;font-size:14px;line-height:1.5;color:var(--qb-ink)}
.qbq-existing-actions{display:flex;flex-wrap:wrap;gap:var(--space-2)}
.qbq-narrow{display:flex;flex-wrap:wrap;gap:var(--space-4);align-items:flex-end;padding-top:var(--space-2)}
.qbq-narrow>label{display:flex;flex-direction:column;gap:4px;margin:0;font-size:13px;color:var(--color-text-secondary)}
.qbq-narrow select,
.qbq-narrow input[type="date"]{width:auto;min-width:148px;height:32px;padding:0 var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-control);background:var(--color-surface);font-size:13px;color:var(--qb-ink)}
.qbq-dates{display:flex;align-items:center;gap:var(--space-2)}
.qbq-dates>span{font-size:13px;color:var(--color-text-secondary)}
.qbq-result-body{display:flex;flex-direction:column;gap:var(--space-4);padding:var(--space-4) var(--space-6)}
.qbq-health-row{display:flex;align-items:center;gap:var(--space-6);flex-wrap:wrap}
.qbq-health{display:flex;align-items:baseline;gap:var(--space-2)}
.qbq-health b{font-size:44px;line-height:1;color:var(--qb-ink)}
.qbq-health span{font-size:13px;color:var(--qb-muted)}
.qbq-sev4{display:flex;gap:var(--space-4);flex-wrap:wrap}
.qbq-sev4 span{display:flex;flex-direction:column;font-size:12px;color:var(--qb-muted)}
.qbq-sev4 b{font-size:22px;line-height:1.2}
.qbq-sev4 .is-critical b{color:var(--color-error)}
.qbq-sev4 .is-high b{color:var(--color-warning)}
.qbq-sev4 .is-medium b{color:var(--color-text-secondary)}
.qbq-sev4 .is-low b{color:var(--color-text-tertiary)}
.qbq-before-after{font-size:13px;color:var(--qb-muted)}
.qbq-before-after b{color:var(--qb-ink)}
.qbq-before-after .is-up{color:var(--color-success)}
.qbq-before-after .is-down{color:var(--color-error)}
.qbq-cat-break h4{margin:0 0 var(--space-2);font-size:14px;color:var(--qb-ink);font-weight:600}
.qbq-cat-bars{display:flex;flex-direction:column;gap:var(--space-1)}
.qbq-cat-row{display:flex;align-items:center;gap:var(--space-2);font-size:12px;color:var(--qb-muted)}
.qbq-cat-row span{flex:0 0 64px}
.qbq-cat-row i{display:block;height:8px;background:var(--color-primary-soft);border-radius:var(--radius-control)} .qbq-cat-row b{font-weight:600;color:var(--qb-ink)}
.qbq-list-head{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);flex-wrap:wrap;padding:var(--space-3) var(--space-6) 0}
.qbq-tabs{display:flex;gap:var(--space-4);border-bottom:1px solid var(--color-border);flex-wrap:wrap}
.qbq-tabs button{border:0;background:none;padding:var(--space-2) 0;color:var(--qb-muted);font-size:14px;border-bottom:2px solid transparent;cursor:pointer}
.qbq-tabs button.on{color:var(--color-primary);font-weight:700;border-bottom-color:var(--color-primary)}
.qbq-list-filters{display:flex;gap:var(--space-3);font-size:12px;color:var(--qb-muted)}
.qbq-list-filters select{height:32px;padding:0 var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-control);background:var(--color-surface);font-size:12px;color:var(--qb-ink)}
.qbq-issue-list{display:flex;flex-direction:column;gap:0;margin:var(--space-2) var(--space-6);padding:var(--space-2) 0;min-height:160px;max-height:46vh;overflow:auto}
.qbq-issue{padding:var(--space-3) 0;border-bottom:1px solid var(--color-border)}
.qbq-issue:last-child{border-bottom:0}
.qbq-issue-head{display:flex;align-items:center;gap:var(--space-2);flex-wrap:wrap}
.qbq-sev{font-size:12px;padding:1px var(--space-2);border-radius:var(--radius-control);border:1px solid currentColor;flex-shrink:0}
.qbq-issue.is-critical .qbq-sev{color:var(--color-error)}
.qbq-issue.is-high .qbq-sev{color:var(--color-warning)}
.qbq-issue.is-medium .qbq-sev{color:var(--color-text-secondary)}
.qbq-issue.is-low .qbq-sev{color:var(--color-text-tertiary)}
.qbq-iss-title{font-size:14px;color:var(--qb-ink);font-weight:600}
.qbq-code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;color:var(--qb-muted)}
.qbq-status{margin-left:auto;font-size:12px;color:var(--qb-muted)}
.qbq-issue.status-FIXED .qbq-status{color:var(--color-success)}
.qbq-issue.status-IGNORED .qbq-status{color:var(--color-text-tertiary)}
.qbq-issue.status-FIX_FAILED .qbq-status{color:var(--color-error)}
.qbq-desc{margin:var(--space-2) 0 0;font-size:13px;line-height:1.7;color:var(--qb-ink)}
.qbq-evidence{margin:var(--space-1) 0 0;font-size:12px;line-height:1.6;color:var(--qb-muted);white-space:pre-wrap;word-break:break-all}
.qbq-resolve-note{color:var(--qb-accent,#a52a23);font-size:12px}
.qbq-subprog{margin:var(--space-1) 0 0;font-size:12px;color:var(--color-primary)}
.qbq-issue-actions{display:flex;gap:var(--space-2);margin-top:var(--space-2);align-items:center;flex-wrap:wrap}
.qbq-issue-actions .btn{height:32px;padding:0 var(--space-3);font-size:13px}
.qbq-mini{border:0;background:none;color:var(--qb-muted);font-size:12px;text-decoration:underline;cursor:pointer}
.qbq-empty{margin:var(--space-6) 0;text-align:center;font-size:13px;color:var(--qb-muted)}
.qbq-fix-modal{width:min(1020px,96vw)}
.qbq-fix-cols{display:grid;grid-template-columns:1fr 1fr;gap:0;min-height:320px;max-height:60vh;overflow:auto}
.qbq-fix-col{padding:var(--space-4);border-right:1px solid var(--color-border);overflow:auto}
.qbq-fix-col.is-after{border-right:0}
.qbq-fix-col h4{margin:0 0 var(--space-2);font-size:13px;color:var(--qb-muted);font-weight:600}
.qbq-fix-col>div{font-size:13px;line-height:1.7;color:var(--qb-ink);white-space:pre-wrap;word-break:break-word}
.qbq-fix-col .is-del{background:var(--color-error-soft);color:var(--color-error);text-decoration:line-through}
.qbq-fix-col .is-add{background:var(--color-success-soft);color:var(--color-success)}
.qbq-fix-note{margin:0;padding:var(--space-2) var(--space-4);font-size:12px;color:var(--qb-muted);border-top:1px solid var(--color-border)}
.qbq-qmark{display:inline-flex;align-items:center;font-size:12px}
.qbq-qmark.is-clean{color:var(--color-success)}
.qbq-qmark.is-bad{color:var(--color-warning)}
.qbq-qmark.is-warn{color:var(--color-text-tertiary)}
.qb-more-popover{position:absolute;z-index:60;min-width:140px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-overlay);box-shadow:var(--shadow-overlay);padding:var(--space-1)}
.qb-more-popover button{display:block;width:100%;text-align:left;border:0;background:none;padding:var(--space-2) var(--space-3);font-size:13px;color:var(--qb-ink);cursor:pointer;border-radius:var(--radius-control)} .qb-more-popover button:hover{background:var(--color-surface-hover)} @media(max-width:760px){.qbq-stages{grid-template-columns:1fr}.qbq-fix-cols{grid-template-columns:1fr}.qbq-fix-col{border-right:0;border-bottom:1px solid var(--color-border)}}

/* ===== 底部作业横条 + 作业本抽屉 ===== */
.qb-basket-dock{position:fixed;left:0;right:0;bottom:0;z-index:70;display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:48px;padding:6px max(24px, calc((100vw - var(--width-content)) / 2));border-top:1px solid var(--color-border-strong);background:var(--color-surface)}
.qb-dock-info{display:flex;align-items:baseline;gap:10px;min-width:0}
.qb-dock-label{font-size:12px;letter-spacing:.08em;color:var(--qb-muted)}
.qb-basket-dock b{font-size:15px;font-weight:600;color:var(--qb-ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:40vw}
.qb-dock-meta{font-size:13px;color:var(--qb-accent);white-space:nowrap}
.qb-dock-count{display:inline;margin-right:2px;color:var(--color-primary);font-size:16px;font-weight:700;line-height:1;letter-spacing:.01em}
.qb-dock-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}

.qb-basket-drawer{position:fixed;left:0;right:0;bottom:0;z-index:72;display:flex;flex-direction:column;height:min(72vh,680px);border-top:1px solid var(--color-border-strong);background:var(--color-surface);box-shadow:var(--shadow-overlay);transform:translateY(100%);transition:transform .18s ease-out}
.qb-basket-drawer.open{transform:translateY(0)}
.qb-basket-drawer[hidden]{display:none}
.qb-drawer-head{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;padding:8px 20px;border-bottom:1px solid var(--color-border)}
.qb-drawer-head .qb-eyebrow{margin:0;font-size:12px;letter-spacing:.12em;color:var(--qb-accent)}
.qb-drawer-head h3{margin:0;font-size:16px;color:var(--qb-ink)}
.qb-drawer-head-actions{display:flex;align-items:center;gap:8px}
.qb-drawer-dirty{font-size:12px;color:var(--color-warning)}
.qb-drawer-body{display:grid;grid-template-columns:248px minmax(0,1fr);min-height:0;flex:1}
.qb-drawer-catalog{overflow-y:auto;padding:8px 12px 16px;border-right:1px solid var(--color-border)}
.qb-drawer-group{margin-top:12px}
.qb-drawer-group-title{display:flex;justify-content:space-between;align-items:baseline;margin:0 0 4px;padding:0 8px;font-size:12px;color:var(--qb-muted)}
.qb-drawer-group-title span{font-size:12px}
.qb-drawer-row{display:flex;align-items:center;justify-content:space-between;gap:8px;width:100%;padding:7px 8px;border:0;border-radius:var(--radius-control);background:none;font:inherit;text-align:left;cursor:pointer}
.qb-drawer-row b{font-size:13px;font-weight:500;color:var(--qb-ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.qb-drawer-row .qb-drawer-rename-icon{display:none;font-style:normal;font-size:13px;color:var(--qb-muted);flex-shrink:0;padding:0 2px}
.qb-drawer-row:hover .qb-drawer-rename-icon{display:inline}
.qb-drawer-rename-input{height:30px;min-width:0;flex:1 1 auto;padding:0 8px;border:1px solid var(--color-primary);border-radius:var(--radius-control);font:inherit;font-size:13px;color:var(--qb-ink);background:var(--color-surface)}
.qb-drawer-row span{font-size:12px;color:var(--qb-muted);flex-shrink:0}
.qb-drawer-row:hover{background:var(--color-surface-hover)}
.qb-drawer-row.on{background:var(--color-primary-soft);color:var(--qb-accent)}
.qb-drawer-row.on b{color:var(--qb-accent);font-weight:600}
.qb-drawer-empty{margin:24px 8px;font-size:13px;line-height:1.7;color:var(--qb-muted)}
.qb-drawer-editor{display:flex;flex-direction:column;min-width:0;min-height:0}
.qb-drawer-edit-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 20px;border-bottom:1px solid var(--color-border)}
.qb-drawer-edit-title{font-size:15px;font-weight:600;color:var(--qb-ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.qb-drawer-edit-meta{font-size:13px;color:var(--qb-muted);white-space:nowrap}
.qb-drawer-checkall{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--qb-muted);cursor:pointer;flex-shrink:0;margin-left:auto}
.qb-drawer-checkall input{width:15px;height:15px;accent-color:var(--color-primary);cursor:pointer}
.qb-drawer-question-list{flex:1;overflow-y:auto;padding:4px 20px 16px}
.qb-drawer-question{padding:10px 8px 10px 6px;border-bottom:1px solid var(--color-border);border-radius:var(--radius-control)} .qb-drawer-question.checked{background:var(--color-primary-soft)} .qb-drawer-question-head{display:flex;align-items:center;gap:10px}
.qb-drawer-check{display:inline-flex;align-items:center;flex-shrink:0;cursor:pointer}
.qb-drawer-check input{width:15px;height:15px;accent-color:var(--color-primary);cursor:pointer}
.qb-drawer-qno-edit{display:flex;align-items:center;gap:1px;flex-shrink:0;font-size:13px;color:var(--qb-muted)}
.qb-drawer-qno{width:34px;height:28px;padding:0 4px;border:1px solid var(--color-border);border-radius:var(--radius-control);font:inherit;font-size:13px;color:var(--qb-ink);text-align:center;background:var(--color-surface)}
.qb-drawer-qno:focus{border-color:var(--color-primary);outline:0}
.qb-drawer-qno-edit span{color:var(--qb-muted)}
.qb-drawer-qtype{flex-shrink:0;padding:1px 8px;border:1px solid var(--color-border);border-radius:var(--radius-control);font-size:12px;color:var(--qb-muted)}
.qb-drawer-actions{display:flex;gap:2px;margin-left:auto;flex-shrink:0}
.qb-drawer-actions .qb-text-action{padding:4px 7px;font-size:12px}
.qb-drawer-actions .qb-text-action[disabled]{color:var(--color-text-disabled);cursor:default}
.qb-drawer-question-body{margin-top:6px;font-size:14px;line-height:1.7;color:var(--qb-ink)}
.qb-drawer-question-body .qb-line{margin:0;line-height:1.75}
.qb-drawer-question-body .qb-line + .qb-line{margin-top:4px}
.qb-drawer-material{margin:0 0 8px;padding:8px 12px;background:var(--color-warning-soft);border-left:3px solid var(--color-warning);color:var(--color-text-secondary);line-height:1.75}
.qb-drawer-material b{color:var(--color-warning)}
.qb-drawer-material .qb-content-block{margin:3px 0 0}
.qb-drawer-stem{overflow-wrap:anywhere}
.qb-drawer-options{margin-top:8px;display:grid;grid-template-columns:1fr 1fr;gap:4px 22px}
.qb-drawer-option{display:flex;gap:7px;line-height:1.75;color:var(--color-text-secondary);font-size:13px}
.qb-drawer-option b{color:var(--color-text-primary);flex-shrink:0}
.qb-drawer-answer{margin-top:8px;display:flex;gap:8px;align-items:flex-start;padding-top:8px;border-top:1px solid var(--color-border);color:var(--color-text-secondary);font-size:13px}
.qb-drawer-answer b{flex-shrink:0;color:var(--color-text-primary)}
.qb-drawer-answer .qb-recite-answer{flex:1;min-width:0}
.qb-drawer-edit-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 20px;border-top:1px solid var(--color-border)}
.qb-drawer-hint{font-size:12px;color:var(--qb-muted);min-width:0}
.qb-drawer-batch-remove{flex-shrink:0;height:30px;padding:0 12px;font-size:12px;color:var(--color-primary);border-color:var(--color-border)}
.qb-drawer-batch-remove[disabled]{color:var(--color-text-disabled);border-color:var(--color-border);cursor:default}
.qb-drawer-editor-empty{display:flex;flex-direction:column;gap:6px;align-items:center;justify-content:center;flex:1;padding:32px 0;font-size:13px;color:var(--qb-muted);text-align:center}
.qb-drawer-editor-empty strong{font-size:14px;color:var(--qb-ink)}
/* ===== AI命题工作台 ===== */
.qb-authoring input[type="checkbox"]{width:14px;height:14px;flex:0 0 14px;margin:0;accent-color:var(--color-primary)}
.qb-authoring input[type="radio"]{width:14px;height:14px;flex:0 0 14px;margin:0;accent-color:var(--color-primary)}
.qb-authoring{margin-top:16px;padding-bottom:32px}
.qb-authoring .au-mode-tabs{margin-top:10px}
.au-panel{padding-top:4px}
.au-group{padding:16px 0;border-bottom:1px solid var(--qb-line)}
.au-group-title{margin:0;font-size:15px;font-weight:600;color:var(--qb-ink)}
.au-group-hint{margin:4px 0 10px;font-size:12px;color:var(--qb-muted);line-height:1.6}
.au-scope-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px}
.au-frame-summary{font-size:13px;color:var(--qb-muted);white-space:nowrap;flex-shrink:0;overflow:hidden;text-overflow:ellipsis;max-width:46vw}
/* 无原题面板：左侧命题范围树 + 右侧设置，一屏内完成 */
.au-fresh-grid{display:grid;grid-template-columns:minmax(280px,340px) minmax(0,1fr);align-items:start}
.au-fresh-left{padding-right:24px;border-right:1px solid var(--qb-line);min-width:0}
.au-fresh-left .au-group{border-bottom:0;padding-bottom:8px}
.au-fresh-main{padding-left:28px;min-width:0}
/* 命题章节树：教材（可勾选全册）→ 课（可勾选全课）→ 框题，全部教材并列支持跨册 */
.au-frame-tree{max-height:560px;overflow:auto;border:1px solid var(--qb-line);border-radius:6px;padding:4px 14px;background:var(--color-surface)}
.au-book-block{border-bottom:1px solid var(--qb-line)}
.au-book-block:last-child{border-bottom:0}
.au-book-head{display:flex;align-items:flex-start;gap:8px;padding:10px 0 8px}
.au-book-check{display:inline-flex;align-items:flex-start;gap:8px;font-size:14px;font-weight:600;color:var(--qb-ink);cursor:pointer;line-height:1.5}
.au-book-check input{margin-top:3px}
.au-book-units{display:none;margin-left:20px;padding-bottom:6px}
.au-book-block.open .au-book-units{display:block}
.au-unit-block{border-bottom:1px dashed var(--qb-line)}
.au-unit-block:last-child{border-bottom:0}
.au-unit-head{display:flex;align-items:flex-start;gap:8px;padding:8px 0}
.au-unit-toggle{flex:0 0 20px;height:20px;border:0;background:transparent;color:var(--qb-muted);cursor:pointer;font-size:15px;line-height:18px;padding:0}
.au-unit-check{display:inline-flex;align-items:flex-start;gap:8px;font-size:13px;font-weight:600;color:var(--qb-ink);cursor:pointer;line-height:1.5}
.au-unit-check input{margin-top:3px}
.au-frame-list{display:none;margin:0 0 8px 28px}
.au-unit-block.open .au-frame-list{display:block}
.au-frame-check{display:flex;align-items:flex-start;gap:8px;padding:5px 0;font-size:13px;font-weight:400;color:var(--color-text-secondary);cursor:pointer;line-height:1.5}
.au-frame-check input{margin-top:3px}
.au-frame-check:hover{color:var(--color-primary)}
/* 题型题量步进 */
.au-type-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:8px 32px}
.au-type-row{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--qb-ink)}
.au-type-row .au-type-note{font-size:12px;color:var(--qb-muted)}
.au-stepper{display:inline-flex;align-items:center;margin-left:auto;flex-shrink:0}
.au-step-btn{width:32px;height:32px;border:1px solid var(--qb-line);background:var(--color-surface);cursor:pointer;font-size:16px;color:var(--qb-ink);line-height:1}
.au-step-btn:hover{background:var(--color-surface-hover)}
.au-step-btn:first-child{border-radius:var(--radius-control) 0 0 var(--radius-control)} .au-step-btn:last-child{border-radius:0 var(--radius-control) var(--radius-control) 0} .au-step-num{width:44px;height:32px;border-top:1px solid var(--qb-line);border-bottom:1px solid var(--qb-line);background:var(--color-surface);text-align:center;line-height:32px;font-size:13px;color:var(--qb-ink)}
/* 难度系数与其他设置 */
.au-coef-row{display:flex;align-items:center;gap:8px 20px;flex-wrap:wrap}
.au-radio{display:inline-flex;align-items:center;gap:7px;font-size:14px;color:var(--qb-ink);white-space:nowrap;flex-shrink:0}
#auCoefValue{width:160px}
#auCoefValue:disabled{color:var(--color-text-disabled)}
.au-extra-row{display:flex;gap:12px 20px;flex-wrap:wrap}
.au-field{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--qb-muted)}
.au-field select{min-width:180px}
.au-field-grow{flex:1;min-width:260px}
.au-field-grow input{width:100%}
#auAdaptPanel .au-extra-row{margin-bottom:var(--space-4)}
#auAdaptPanel .au-field{gap:var(--space-2);min-width:0}
#auAdaptPanel .au-field-grow{min-width:min(260px,100%)}
#auAdaptPanel .au-field input,#auAdaptPanel .au-field textarea{width:100%;box-sizing:border-box}
#auAdaptPanel details>.au-field{margin-bottom:var(--space-4)}
.au-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:16px 0 4px}
.au-cost-hint{font-size:12px;color:var(--qb-muted)}
/* 有原题：母题搜索与勾选 */
.au-search{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--qb-line);border-radius:var(--radius-control);padding:0 10px;height:36px;flex:1;min-width:220px;max-width:440px;background:var(--color-surface)}
.au-search input{border:0;outline:0;flex:1;min-width:0;font-size:13px;background:transparent;color:var(--qb-ink)}
.au-parent-list{max-height:280px;overflow:auto;border:1px solid var(--qb-line);border-radius:6px;background:var(--color-surface)}
.au-parent-row{display:flex;gap:12px;align-items:flex-start;padding:10px 14px;border-bottom:1px solid var(--qb-line);font-size:13px;line-height:1.6;color:var(--qb-ink);cursor:pointer}
.au-parent-row:last-child{border-bottom:0}
.au-parent-row:hover{background:var(--color-surface-hover)}
.au-parent-row input{margin-top:4px;flex-shrink:0}
.au-parent-row .au-parent-meta{flex-shrink:0;font-size:12px;color:var(--qb-muted);white-space:nowrap}
.au-parent-row .au-parent-stem{flex:1;min-width:0;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow-wrap:anywhere}
.au-empty-hint{padding:16px;font-size:13px;color:var(--qb-muted)}
/* 生成进度 */
.au-progress{padding:16px 0;border-top:1px solid var(--qb-line)}
.au-progress-head{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.au-progress-head b{font-size:14px;color:var(--qb-ink)}
.au-progress-head span{font-size:12px;color:var(--qb-muted)}
.au-progress-bar{height:4px;background:var(--color-surface-hover);border-radius:2px;overflow:hidden;margin:10px 0}
.au-progress-bar i{display:block;height:100%;width:0;background:var(--color-primary);transition:width .4s}
.au-progress-log{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--qb-muted);line-height:1.6}
.au-progress-log .au-log-ok{color:var(--color-text-primary)}
.au-progress-log .au-log-err{color:var(--color-error)}
/* 逐题审核 */
.au-review{padding:16px 0;border-top:1px solid var(--qb-line)}
.au-review-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.au-review-head .au-group-title span{margin-left:10px;font-size:12px;font-weight:400;color:var(--qb-muted)}
.au-review-actions{display:flex;align-items:center;gap:8px 14px;flex-wrap:wrap}
.au-review-list{margin-top:4px;display:flex;flex-direction:column;gap:12px}
/* 单道试题允许的一层白底容器 */
.au-card{border:1px solid var(--qb-line);border-radius:6px;background:var(--color-surface);padding:14px 16px}
.au-card.is-dropped{opacity:.5}
.au-card-head{display:flex;align-items:center;gap:6px 14px;flex-wrap:wrap;font-size:12px;color:var(--qb-muted)}
.au-card-head .au-card-src{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:52vw}
.au-card-adopt{margin-left:auto;display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--qb-ink);white-space:nowrap;flex-shrink:0}
.au-card-stem{margin-top:8px;font-size:15px;line-height:1.75;color:var(--qb-ink);overflow-wrap:anywhere}
.au-card-material{margin-top:10px;padding:8px 12px;background:var(--color-surface-hover);border-left:3px solid var(--color-border);font-size:13px;line-height:1.7;color:var(--color-text-secondary)}
.au-card-options{margin-top:6px;display:grid;grid-template-columns:1fr 1fr;gap:4px 24px;font-size:13px;line-height:1.7;color:var(--color-text-secondary)}
.au-card-option{display:flex;gap:6px;overflow-wrap:anywhere}
.au-card-options b{color:var(--qb-ink);flex-shrink:0}
.au-card-answer{margin-top:8px;padding-top:8px;border-top:1px solid var(--qb-line);display:flex;gap:8px;align-items:flex-start;font-size:13px;color:var(--color-text-secondary);line-height:1.7}
.au-card-answer b{flex-shrink:0;color:var(--qb-ink)}
.au-card-answer .au-card-analysis{flex:1;min-width:0;white-space:pre-wrap;overflow-wrap:anywhere}
.au-card-warn{margin-top:8px;font-size:12px;color:var(--color-warning);line-height:1.6}

@media(max-width:760px){
  .qb-basket-dock{padding:6px 16px;flex-wrap:wrap;row-gap:8px}
  /* 390px 下一行放不下「标题 + 计数 + 四个按钮」：计数文字会溢出到按钮上
     （已实测重叠 200px 以上，且标题被压成 0 宽）。改成两行——
     第一行标题+计数，第二行按钮右对齐，一个都不少。 */
  .qb-dock-info{flex:1 1 100%}
  .qb-basket-dock b{max-width:none;flex:1 1 auto;min-width:0}
  .qb-dock-meta{flex:0 0 auto}
  .qb-dock-actions{flex:1 1 100%;justify-content:flex-end}
  .qb-dock-label{display:none}
  .qb-dock-actions .btn{height:30px;padding:0 10px;font-size:12px}
  .qb-basket-drawer{height:82vh}
  .qb-drawer-body{grid-template-columns:1fr;grid-template-rows:auto minmax(0,1fr)}
  .qb-drawer-catalog{max-height:26vh;border-right:0;border-bottom:1px solid var(--color-border)}
  .qb-drawer-edit-head{flex-wrap:wrap}
  .qb-drawer-options{grid-template-columns:1fr}
  .au-scope-row{align-items:flex-start}
  .au-fresh-grid{display:block}
  .au-fresh-left{padding-right:0;border-right:0}
  .au-fresh-left .au-group{border-bottom:1px solid var(--qb-line);padding-bottom:16px}
  .au-fresh-main{padding-left:0}
  .au-frame-tree{max-height:320px}
  .au-parent-row .au-parent-meta{display:none}
  .au-card-options{grid-template-columns:1fr}
}

/* ===== 时政素材引擎：素材依据折叠区（克制样式：仅分隔线与排版，无卡片嵌套） ===== */
.qb-adapt-basis { border-top: 1px solid var(--color-border); margin-top: var(--space-2); padding-top: var(--space-2); font-size: 13px; }
.qb-adapt-basis summary { cursor: pointer; color: var(--color-text-secondary); }
.qb-adapt-basis summary:hover { color: var(--color-text-primary); }
.qb-adapt-basis .qb-adapt-basis-note { color: var(--color-text-tertiary); font-size: 12px; margin-left: var(--space-2); }
.qb-adapt-basis-body { margin: var(--space-2) 0 0; display: grid; grid-template-columns: auto 1fr; gap: var(--space-1) var(--space-3); }
.qb-adapt-basis-body dt { color: var(--color-text-tertiary); }
.qb-adapt-basis-body dd { margin: 0; color: var(--color-text-primary); min-width: 0; }
.qb-adapt-basis-body ul { margin: 0; padding-left: 16px; }
.qb-adapt-basis-body a { color: var(--color-primary); }
p.qb-adapt-basis-note { color: var(--color-text-tertiary); font-size: 12px; margin: var(--space-2) 0 0; }

/* ===== 结构化图表块（AI 图表命题）===== */
.qb-chart{margin:10px 0 12px}
.qb-chart-title{font-size:14px;font-weight:600;text-align:center;color:var(--color-text-primary);margin:0 0 6px}
.qb-chart-body{overflow-x:auto}
.qb-chart .qb-table{margin:6px 0}
.qb-chart td.is-num{text-align:right;font-variant-numeric:tabular-nums}
.qb-chart-meta{display:flex;flex-wrap:wrap;gap:4px 14px;justify-content:center;font-size:12px;color:var(--color-text-tertiary);margin-top:4px}
.qb-chart-sim{color:var(--color-error);font-weight:600}
.qb-chart-preview-text{font-size:13px;color:var(--color-text-primary);padding:4px 0}
.qb-chart-preview-text p{margin:2px 0}
.qb-chart-invalid figcaption{font-size:12px;color:var(--color-text-tertiary);text-align:center;padding:8px 0}
.qb-draft-charts figure{border:0;padding:4px 10px}
.qb-draft-charts figcaption{font-size:12px;color:var(--color-text-secondary)}

/* 改编工作台：图表预览与插入/编辑工具 */
.qb-ae-tools{display:flex;gap:8px;margin:4px 0}
.qb-ae-charts{display:grid;gap:8px;margin:6px 0}
.qb-ae-chart{margin:0;border:1px solid var(--color-border);border-radius:8px;padding:8px 10px}
.qb-ae-chart-body{min-width:0}
.qb-ae-chart-tools{display:flex;gap:12px;margin-top:4px}
.qb-chart-canvas{width:100%;min-height:200px}
.qb-chart-canvas.is-fail{display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--color-text-tertiary);border:1px dashed var(--color-border)}
.qb-chart-svg{display:flex;justify-content:center;padding:4px 0}
.qb-chart-svg svg{width:100%;max-width:640px;height:auto}