/* Batch 4: P04, P11 and P12. */
body[data-page="knowledge"] .workspace,body[data-page="knowledge-category"] .workspace{background:var(--surface-sunken);color:var(--ink)}
body[data-page="knowledge"] .content,body[data-page="knowledge-category"] .content{padding:0;max-width:760px;width:100%}
.knowledge-screen,.knowledge-category-screen{min-height:100%;background:var(--surface-sunken)}
.knowledge-home-header{height:44px;display:flex;align-items:center;padding:0 var(--space-1) 0 var(--space-4);gap:0;background:var(--surface-sunken);border:0}
.knowledge-category-header{height:56px;display:flex;align-items:center;padding:0 var(--space-4);gap:var(--space-1);background:var(--surface-sunken);border-bottom:1px solid transparent}
.knowledge-home-header h1{margin:0;flex:1;font-size:var(--text-heading);line-height:24px;font-weight:600;letter-spacing:0}
.knowledge-category-header h1{margin:0;font-size:var(--text-title);line-height:30px;font-weight:700;letter-spacing:0}
.knowledge-home-header>div,.knowledge-category-header>div{display:flex;margin-left:auto}
.knowledge-home-header button,.knowledge-category-header button{width:44px;height:44px;padding:0;display:grid;place-items:center;color:var(--ink);flex-shrink:0}
.knowledge-home-header svg{width:20px;height:20px;stroke-width:1.8}
.knowledge-category-header svg{width:22px;height:22px;stroke-width:1.8}
.knowledge-search-field{height:40px;display:flex;align-items:center;gap:var(--space-2);flex:1;min-width:0;padding:0 var(--space-3);border-radius:var(--radius-sm);background:var(--surface);box-shadow:none}
.knowledge-search-field svg{width:18px;height:18px;color:var(--ink-secondary);flex-shrink:0}.knowledge-search-field input{height:40px;width:100%;min-width:0;padding:0;border:0;background:transparent;font-size:var(--text-body)}.knowledge-search-field input:focus{outline:0}
.knowledge-home-header>.knowledge-search-field+button,.knowledge-category-header.searching>button:last-child{width:48px;font-size:var(--text-caption)}
.knowledge-category-list{padding:var(--space-2) var(--space-4) var(--space-6);display:flex;flex-direction:column;gap:var(--space-3)}
.knowledge-category-card{min-height:90px;width:100%;display:grid;grid-template-columns:52px 1fr 24px;align-items:center;gap:var(--space-4);padding:var(--space-4);background:var(--surface);border-radius:var(--radius-lg);text-align:left;overflow:hidden}
.knowledge-category-card>svg{width:20px;height:20px;color:var(--ink-secondary)}.knowledge-symbol{width:52px;height:52px;display:grid;place-items:center;border-radius:var(--radius-sm);font-size:var(--text-display);color:var(--ink-secondary)}.knowledge-symbol.blue{background:#e7f1ff}.knowledge-symbol.yellow{background:#fff4d2}.knowledge-symbol.mint{background:#dff6f2}.knowledge-symbol.gray{background:var(--surface-sunken)}.knowledge-symbol.purple{background:#f1eafb}
.knowledge-category-copy{display:flex;flex-direction:column;min-width:0}.knowledge-category-copy strong{font-size:var(--text-title);line-height:27px;font-weight:700}.knowledge-category-copy>span{font-size:var(--text-body);line-height:21px;color:var(--ink-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.knowledge-category-copy small{font-size:var(--text-caption);line-height:20px;color:var(--ink-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.knowledge-search-results{padding:var(--space-2) var(--space-4) var(--space-6);display:flex;flex-direction:column;gap:var(--space-3)}.knowledge-search-results>button{background:var(--surface);border-radius:var(--radius-md);padding:var(--space-4) var(--space-4);display:flex;flex-direction:column;gap:var(--space-1);text-align:left}.knowledge-search-results strong{font-size:var(--text-input)}.knowledge-search-results span{color:var(--ink-secondary);font-size:var(--text-caption)}
.knowledge-empty{padding:48px var(--space-5);text-align:center;color:var(--ink-secondary)}.knowledge-empty p{margin:0 0 var(--space-4)}.knowledge-empty .secondary{padding:var(--space-2) var(--space-4);border-radius:var(--radius-sm);background:var(--surface)}

.knowledge-category-header{background:var(--canvas);border:0}.knowledge-category-header>h1{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.knowledge-category-header>div{gap:0}.knowledge-category-header svg{width:20px;height:20px;stroke-width:1.8}.knowledge-category-header.searching{gap:var(--space-1)}.knowledge-category-header.searching>.knowledge-search-field{margin-left:0}
.knowledge-timeline{padding:var(--space-3) var(--space-4) var(--space-8);display:flex;flex-direction:column;gap:var(--space-3)}
.knowledge-timeline-row{display:grid;grid-template-columns:62px minmax(0,1fr);align-items:stretch;min-height:75px}
.knowledge-timeline-row>time{display:flex;flex-direction:column;align-items:center;padding-top:var(--space-2);color:var(--ink-secondary);line-height:1}.knowledge-timeline-row>time small{font-size:var(--text-micro);line-height:16px}.knowledge-timeline-row>time strong{font-size:var(--text-title);line-height:22px;font-weight:700}.knowledge-timeline-row>time span{font-size:var(--text-caption);line-height:18px;color:var(--ink-secondary)}
.knowledge-course-card{min-width:0;min-height:75px;padding:var(--space-4);background:var(--surface);border-radius:var(--radius-md);display:flex;align-items:center;overflow:hidden}.knowledge-course-card>button{display:block;width:100%;padding:0;text-align:left;min-width:0}.knowledge-course-card>button strong{display:block;font-size:var(--text-input);line-height:21px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.knowledge-course-excerpt{display:block;margin-top:var(--space-2);color:var(--ink-secondary);font-size:var(--text-caption);line-height:18px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

#batch4-sheet{padding:0;border:0;background:var(--surface);color:var(--ink);overflow:hidden}#batch4-sheet::backdrop{background:rgba(0,0,0,.7)}
#batch4-body,.knowledge-compose{min-width:0;width:100%}.knowledge-compose{height:430px;display:flex;flex-direction:column}.knowledge-compose>.sheet-header{flex:0 0 auto}.knowledge-compose>#knowledge-title{width:calc(100% - 40px);height:46px;margin:var(--space-1) var(--space-5) 0;padding:var(--space-1) 0;border:0;border-radius:0;background:transparent;font-size:var(--text-title);line-height:30px;font-weight:600}.knowledge-compose>#knowledge-title::placeholder{color:var(--ink-secondary)}.knowledge-compose>#knowledge-text{width:calc(100% - 40px);height:138px;min-height:100px;margin:0 var(--space-5);padding:var(--space-1) 0 var(--space-3);border:0;border-radius:0;background:transparent;resize:none;font:18px/30px "PingFang SC",-apple-system,BlinkMacSystemFont,sans-serif;color:var(--ink)}.knowledge-compose>#knowledge-text::placeholder{color:var(--ink-secondary)}.knowledge-compose input:focus,.knowledge-compose textarea:focus{outline:0}
.knowledge-chips{height:54px;display:flex;align-items:center;gap:var(--space-2);overflow-x:auto;scrollbar-width:none;padding:var(--space-1) var(--space-5) var(--space-3)}.knowledge-chip{flex:0 0 auto;border-radius:var(--radius-lg);background:var(--surface-sunken);padding:var(--space-2) var(--space-3);font-size:var(--text-body);line-height:21px;white-space:nowrap}.knowledge-chip[aria-pressed="true"]{background:#e7f2ef;color:#387567}
.knowledge-extra{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-3);padding:0 var(--space-5) var(--space-2)}.knowledge-extra[hidden]{display:none}.knowledge-extra label{font-size:var(--text-micro);color:var(--ink-secondary)}.knowledge-extra input{width:100%;height:34px;margin-top:var(--space-1);padding:0 var(--space-2);border:1px solid var(--line);border-radius:var(--radius-xs);font-size:var(--text-caption);background:var(--canvas)}
.knowledge-toolbar{margin:auto var(--space-5) 0;border-top:.585px solid var(--line);padding:var(--space-3) 0 var(--space-3);display:flex;align-items:center;justify-content:space-between}.knowledge-toolbar>div{display:flex;gap:var(--space-1)}.knowledge-toolbar button{width:36px;height:36px;padding:0;display:grid;place-items:center;border-radius:var(--radius-lg);color:var(--ink-secondary)}.knowledge-toolbar button svg{width:20px;height:20px}.knowledge-toolbar button strong{font-size:var(--text-title);font-weight:500}.knowledge-toolbar .tool-active{color:#387567}.knowledge-toolbar .knowledge-arrow-save{width:40px;height:40px;background:#26292e;color:var(--inverse)}.knowledge-toolbar .knowledge-arrow-save:disabled{opacity:.35}.knowledge-compose>.sheet-error{margin-top:0}
#knowledge-category-error{font-size:var(--text-caption);color:#a03f32}
.knowledge-compose-header>div{display:flex;align-items:center;gap:var(--space-3)}.knowledge-compose-header>div>button:first-child{width:34px;height:34px;border-radius:50%;background:var(--canvas);display:grid;place-items:center;color:var(--ink-secondary)}.knowledge-compose-header>div svg{width:18px}.knowledge-full-form>#knowledge-title{width:calc(100% - 40px);height:44px;margin:var(--space-3) var(--space-5) 0;padding:0;border:0;background:transparent;color:var(--ink);font:700 20px/29px "PingFang SC",-apple-system,BlinkMacSystemFont,sans-serif;outline:0}.knowledge-compose-created{margin:var(--space-1) var(--space-5) 0;color:var(--ink-secondary);font-size:var(--text-caption);line-height:20px}.knowledge-full-form>.knowledge-chips{height:49px;padding:var(--space-2) var(--space-5)}.knowledge-compose-tabs{height:47px;display:flex;align-items:flex-end;gap:var(--space-8);padding:0 var(--space-8);border-bottom:1px solid var(--line)}.knowledge-compose-tabs span{height:47px;position:relative;padding:var(--space-3) 0 var(--space-3);color:var(--ink-secondary);font-size:var(--text-body);line-height:24px;font-weight:500}.knowledge-compose-tabs span:first-child{color:var(--ink)}.knowledge-compose-tabs span:first-child:after{content:"";position:absolute;left:50%;bottom:-1px;transform:translateX(-50%);width:27px;height:3px;border-radius:var(--radius-xs);background:var(--ink)}.knowledge-full-form>#knowledge-text{display:block;width:calc(100% - 40px);min-height:240px;flex:1;margin:var(--space-5) var(--space-5) 0;padding:0;border:0;background:transparent;resize:none;outline:0;color:var(--ink);font:14px/24px "PingFang SC",-apple-system,BlinkMacSystemFont,sans-serif}.knowledge-full-form>.knowledge-extra{grid-template-columns:1fr;padding:var(--space-3) var(--space-5);border-top:1px solid var(--line)}.knowledge-full-form>.knowledge-toolbar{position:sticky;bottom:0;background:var(--surface);margin-top:auto;padding-bottom:max(var(--space-3),env(safe-area-inset-bottom))}.knowledge-full-form>.sheet-error{margin-bottom:var(--space-2)}

@media(min-width:0px){
 body[data-page="knowledge"] .content,body[data-page="knowledge-category"] .content,body[data-page="knowledge-compose"] .content{padding:0;margin:0;max-width:none}
 .knowledge-compose-screen{min-height:calc(100dvh - 62px)}
 #batch4-sheet{margin:auto 0 0;width:100%;max-width:100%;height:min(430px,90dvh);border-radius:var(--radius-lg) var(--radius-lg) 0 0}
 body.keyboard-open #batch4-sheet{height:min(430px,calc(var(--visual-height) - 12px))}.knowledge-compose{height:100%}
}
@media(min-width:761px){
 body[data-page="knowledge"] .content,body[data-page="knowledge-category"] .content{padding-top:var(--space-5)}
 body[data-page="knowledge-compose"] .content{padding:var(--space-5) var(--space-8)}.knowledge-compose-screen{max-width:720px;margin:auto;border-radius:var(--radius-lg);overflow:hidden;min-height:760px;box-shadow:none}
 .knowledge-screen,.knowledge-category-screen{border-radius:var(--radius-md);overflow:hidden;min-height:700px}.knowledge-category-list{display:grid;grid-template-columns:1fr 1fr}
 #batch4-sheet{width:min(620px,calc(100% - 40px));max-width:620px;border-radius:var(--radius-lg);margin:auto}.knowledge-compose{height:430px}
}