/* Knowledge library: one page, one design layer. Shared navigation/footer remain unchanged. */
body.qiai-knowledge-library {
  --kl-ink: #203b32;
  --kl-green: #315f50;
  --kl-muted: #68756e;
  --kl-line: #d5ddd8;
  --kl-paper: #fbfcfa;
  --kl-wash: #eef2ef;
  --kl-font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--kl-paper);
}
body.qiai-knowledge-library #rk-knowledge { color: var(--kl-ink); font: 15px/1.8 var(--kl-font); }
body.qiai-knowledge-library #rk-knowledge * { box-sizing: border-box; }
body.qiai-knowledge-library #rk-knowledge :is(h1,h2,h3,h4,p) { margin: 0; }
body.qiai-knowledge-library #rk-knowledge :is(h1,h2,h3,h4) { font-family: var(--kl-font); font-weight: 500; text-wrap: initial; }
body.qiai-knowledge-library #rk-knowledge a { color: inherit; text-decoration: none; }
body.qiai-knowledge-library #rk-knowledge :is(a,button,summary):focus-visible { outline: 2px solid var(--kl-green); outline-offset: 6px; }
body.qiai-knowledge-library #rk-knowledge [id] { scroll-margin-top: 24px; }
body.qiai-knowledge-library #rk-knowledge .kl-shell { width: min(1200px,calc(100% - 160px)); margin: 0 auto; }
body.qiai-knowledge-library #rk-knowledge .kl-eyebrow { display: block; color: var(--kl-green); font-size: 10px; line-height: 1.6; letter-spacing: 2px; font-weight: 600; }
body.qiai-knowledge-library #rk-knowledge .kl-masthead { background: var(--kl-wash); border-bottom: 1px solid var(--kl-line); }
body.qiai-knowledge-library #rk-knowledge .kl-masthead-top { display: flex; align-items: center; justify-content: space-between; padding-top: 54px; }
body.qiai-knowledge-library #rk-knowledge .kl-masthead-note { color: var(--kl-muted); font-size: 12px; letter-spacing: 2px; }
body.qiai-knowledge-library #rk-knowledge .kl-masthead-title { display: flex; align-items: center; justify-content: space-between; gap: 52px; padding: 45px 0 53px; }
body.qiai-knowledge-library #rk-knowledge .kl-masthead-title h1 { font-size: 62px; line-height: 1.25; letter-spacing: -2px; font-weight: 500; }
body.qiai-knowledge-library #rk-knowledge .kl-masthead-title > div { width: 390px; border-left: 1px solid #c5d0c9; padding-left: 34px; }
body.qiai-knowledge-library #rk-knowledge .kl-statement { color: var(--kl-ink); font-size: 18px; margin-bottom: 10px; }
body.qiai-knowledge-library #rk-knowledge .kl-intro { color: var(--kl-muted); font-size: 13px; line-height: 1.9; }
body.qiai-knowledge-library #rk-knowledge .kl-jump-nav { border-top: 1px solid #cbd5ce; display: flex; justify-content: space-between; gap: 26px; padding: 0; }
body.qiai-knowledge-library #rk-knowledge .kl-jump-nav a { display: flex; gap: 22px; align-items: center; min-height: 62px; font-size: 13px; }
body.qiai-knowledge-library #rk-knowledge .kl-jump-nav a span { color: #839088; font-size: 17px; }
body.qiai-knowledge-library #rk-knowledge .kl-jump-nav a:hover { color: #17633f; }
body.qiai-knowledge-library #rk-knowledge .kl-main-layout { display: grid; grid-template-columns: minmax(0,1fr) 250px; align-items: start; gap: 66px; padding-top: 48px; padding-bottom: 62px; }
body.qiai-knowledge-library #rk-knowledge .kl-section-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; padding-bottom: 25px; border-bottom: 1px solid var(--kl-ink); }
body.qiai-knowledge-library #rk-knowledge .kl-section-heading h2 { margin-top: 9px; font-size: 30px; line-height: 1.3; letter-spacing: -0.5px; }
body.qiai-knowledge-library #rk-knowledge .kl-section-heading > p { color: var(--kl-muted); font-size: 11px; line-height: 1.9; text-align: right; }
body.qiai-knowledge-library #rk-knowledge .topic-page-grid { grid-template-columns: minmax(0,1fr); gap: 0; margin: 0; }
body.qiai-knowledge-library #rk-knowledge .topic-page-grid .article-card { display: flex; align-items: flex-start; gap: 24px; padding: 24px 0 23px; border: 0; border-bottom: 1px solid var(--kl-line); border-radius: 0; background: transparent; box-shadow: none; overflow: visible; transform: none; transition: color 160ms ease; }
body.qiai-knowledge-library #rk-knowledge .kl-article-number { flex: 0 0 28px; color: #799086; font: 19px/1.3 Georgia,serif; padding-top: 3px; }
body.qiai-knowledge-library #rk-knowledge .article-content { padding: 0; flex: 1; min-width: 0; position: relative; }
body.qiai-knowledge-library #rk-knowledge .kl-article-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; color: var(--kl-green); font-size: 10px; letter-spacing: .5px; }
body.qiai-knowledge-library #rk-knowledge .kl-article-meta span + span { border-left: 1px solid #c4d0c8; padding-left: 12px; }
body.qiai-knowledge-library #rk-knowledge .article-content h3 { padding-right: 27px; font-size: 21px; font-weight: 500; line-height: 1.6; margin-bottom: 9px; color: var(--kl-ink); }
body.qiai-knowledge-library #rk-knowledge .article-content p { font-size: 13px; line-height: 1.85; color: var(--kl-muted); margin: 0; }
body.qiai-knowledge-library #rk-knowledge .article-card:hover h3 { color: #17633f; }
body.qiai-knowledge-library #rk-knowledge .read-more { display: inline-flex; align-items: center; gap: 7px; margin-top: 12px; color: var(--kl-green); font-size: 11px; line-height: 1.5; }
body.qiai-knowledge-library #rk-knowledge .read-more span { font-size: 17px; }
body.qiai-knowledge-library #rk-knowledge .article-card-stats { display: inline-flex; margin-top: 10px; margin-left: 18px; vertical-align: baseline; color: #748079; font-size: 10px; }
body.qiai-knowledge-library #rk-knowledge #topicPagination { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 27px 0 0; }
body.qiai-knowledge-library #rk-knowledge #topicPagination button { appearance: none; min-height: 42px; padding: 10px 17px; border: 1px solid var(--kl-line); border-radius: 0; background: transparent; font: 12px/1.6 var(--kl-font); color: var(--kl-ink); cursor: pointer; }
body.qiai-knowledge-library #rk-knowledge #topicPagination button:hover { background: var(--kl-wash); }
body.qiai-knowledge-library #rk-knowledge #topicPageInfo { color: var(--kl-muted); font-size: 11px; }
body.qiai-knowledge-library #rk-knowledge .kl-side-index { margin-top: 0; padding: 29px 26px 23px; background: var(--kl-wash); border-top: 3px solid var(--kl-green); }
body.qiai-knowledge-library #rk-knowledge .kl-side-index h2 { font-size: 21px; margin: 12px 0 8px; line-height: 1.5; }
body.qiai-knowledge-library #rk-knowledge .kl-side-index > p { color: var(--kl-muted); font-size: 11px; line-height: 1.8; margin-bottom: 24px; }
body.qiai-knowledge-library #rk-knowledge .kl-side-index > a { display: block; position: relative; padding: 18px 14px 18px 0; border-top: 1px solid #cdd7d0; }
body.qiai-knowledge-library #rk-knowledge .kl-side-index > a span { display: block; font-size: 15px; margin-bottom: 4px; }
body.qiai-knowledge-library #rk-knowledge .kl-side-index small { display: block; color: var(--kl-muted); font-size: 10px; line-height: 1.8; }
body.qiai-knowledge-library #rk-knowledge .kl-side-index b { position: absolute; right: 0; top: 18px; font-size: 16px; font-weight: 400; color: var(--kl-green); }
body.qiai-knowledge-library #rk-knowledge .kl-side-index a:hover span { text-decoration: underline; text-underline-offset: 4px; }
body.qiai-knowledge-library #rk-knowledge .kl-sidebar-bottom { border-top: 1px solid #cdd7d0; padding-top: 20px; margin-top: 14px; }
body.qiai-knowledge-library #rk-knowledge .kl-sidebar-bottom > span { color: var(--kl-muted); font-size: 10px; }
body.qiai-knowledge-library #rk-knowledge .kl-sidebar-bottom a { display: block; position: relative; padding: 10px 15px 6px 0; font-size: 12px; }
body.qiai-knowledge-library #rk-knowledge .kl-sidebar-bottom b { top: 9px; }
body.qiai-knowledge-library #rk-knowledge .kl-procurement-band { background: #f0f3f0; border-top: 1px solid var(--kl-line); border-bottom: 1px solid var(--kl-line); padding: 50px 0 55px; }
body.qiai-knowledge-library #rk-knowledge .kl-buying-section > .container { max-width: none; width: 100%; margin: 0; padding: 0; }
body.qiai-knowledge-library #rk-knowledge .kl-minor-heading h2 { font-size: 28px; line-height: 1.45; color: var(--kl-ink); }
body.qiai-knowledge-library #rk-knowledge .kl-minor-heading p { color: var(--kl-muted); font-size: 12px; margin-top: 8px; }
body.qiai-knowledge-library #rk-knowledge .kl-buying-steps { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 35px; padding: 28px 0 24px; }
body.qiai-knowledge-library #rk-knowledge .kl-buying-step { border-top: 1px solid #c6d1c9; padding-top: 18px; }
body.qiai-knowledge-library #rk-knowledge .kl-buying-step h3 { font-size: 18px; margin-bottom: 9px; }
body.qiai-knowledge-library #rk-knowledge .kl-buying-step p { font-size: 12px; color: var(--kl-muted); }
body.qiai-knowledge-library #rk-knowledge .kl-buying-step p a { color: var(--kl-green); text-decoration: underline; text-underline-offset: 3px; }
body.qiai-knowledge-library #rk-knowledge .rk-buying-links { display: flex; flex-wrap: wrap; border-top: 1px solid #c6d1c9; border-bottom: 1px solid #c6d1c9; padding: 18px 0; margin-bottom: 27px; }
body.qiai-knowledge-library #rk-knowledge .kl-cooperation-link { width: 33.333%; padding: 0 28px; border-left: 1px solid #c6d1c9; }
body.qiai-knowledge-library #rk-knowledge .kl-cooperation-link:first-child { padding-left: 0; border-left: 0; }
body.qiai-knowledge-library #rk-knowledge .kl-cooperation-link h3 { font-size: 14px; color: var(--kl-green); }
body.qiai-knowledge-library #rk-knowledge .kl-cooperation-link h3::after { content:" ↗"; }
body.qiai-knowledge-library #rk-knowledge .kl-cooperation-link p { font-size: 11px; color: var(--kl-muted); margin-top: 4px; }
body.qiai-knowledge-library #rk-knowledge .rk-buying-cta { background: transparent; padding-bottom: 34px; }
body.qiai-knowledge-library #rk-knowledge .rk-buying-cta > div { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
body.qiai-knowledge-library #rk-knowledge .rk-buying-cta h3 { font-size: 15px; }
body.qiai-knowledge-library #rk-knowledge .rk-buying-cta p { color: var(--kl-muted); font-size: 11px; margin-top: 4px; }
body.qiai-knowledge-library #rk-knowledge .rk-buying-cta .kl-inline-link { display: inline-flex; font-size: 12px; margin-left: 24px; text-decoration: underline; text-underline-offset: 5px; }
body.qiai-knowledge-library #rk-knowledge .kl-reference-group { display: grid; grid-template-columns: 200px minmax(0,1fr); column-gap: 44px; padding: 33px 0; border-top: 1px solid #c3d0c7; }
body.qiai-knowledge-library #rk-knowledge .kl-reference-group > h3 { grid-column: 1; grid-row: 1; font-size: 23px; line-height: 1.5; }
body.qiai-knowledge-library #rk-knowledge .kl-reference-group > .topic-desc { grid-column: 1; grid-row: 1; margin-top: 47px; color: var(--kl-muted); font-size: 11px; line-height: 1.9; max-width: 185px; }
body.qiai-knowledge-library #rk-knowledge .kl-reference-list { grid-column: 2; grid-row: 1; display: block; }
body.qiai-knowledge-library #rk-knowledge .kl-resource-link { display: block; border-bottom: 1px solid #d4ddd7; padding: 17px 24px 18px 0; position: relative; }
body.qiai-knowledge-library #rk-knowledge .kl-resource-link:first-child { padding-top: 0; }
body.qiai-knowledge-library #rk-knowledge .kl-resource-link:last-child { border-bottom: 0; padding-bottom: 0; }
body.qiai-knowledge-library #rk-knowledge .kl-resource-link::after { content: "↗"; position: absolute; top: 40px; right: 1px; color: var(--kl-green); }
body.qiai-knowledge-library #rk-knowledge .kl-resource-link:first-child::after { top: 23px; }
body.qiai-knowledge-library #rk-knowledge .kl-resource-meta { display: flex; gap: 12px; color: var(--kl-green); font-size: 10px; margin-bottom: 5px; }
body.qiai-knowledge-library #rk-knowledge .kl-resource-copy h4 { font-size: 17px; margin-bottom: 5px; }
body.qiai-knowledge-library #rk-knowledge .kl-resource-copy p { color: var(--kl-muted); font-size: 12px; line-height: 1.8; }
body.qiai-knowledge-library #rk-knowledge .kl-resource-link:hover h4 { color: #17633f; text-decoration: underline; text-underline-offset: 5px; }
body.qiai-knowledge-library #rk-knowledge .kl-handbook { padding: 58px 0 60px; background: var(--kl-paper); }
body.qiai-knowledge-library #rk-knowledge .kl-chapter { border-bottom: 1px solid var(--kl-line); }
body.qiai-knowledge-library #rk-knowledge .kl-chapter > summary { display: flex; align-items: center; gap: 31px; min-height: 106px; cursor: pointer; list-style: none; }
body.qiai-knowledge-library #rk-knowledge .kl-chapter > summary::-webkit-details-marker { display: none; }
body.qiai-knowledge-library #rk-knowledge .kl-chapter-number { color: #879a8f; font: 26px/1 Georgia,serif; width: 32px; }
body.qiai-knowledge-library #rk-knowledge .kl-chapter h3 { font-size: 23px; line-height: 1.45; }
body.qiai-knowledge-library #rk-knowledge .kl-chapter-description { display: block; color: var(--kl-muted); font-size: 11px; margin-top: 5px; }
body.qiai-knowledge-library #rk-knowledge .kl-chapter-toggle { margin-left: auto; font-size: 28px; font-weight: 300; color: var(--kl-green); }
body.qiai-knowledge-library #rk-knowledge .kl-chapter-toggle::before { content: "+"; }
body.qiai-knowledge-library #rk-knowledge .kl-chapter[open] .kl-chapter-toggle::before { content: "−"; }
body.qiai-knowledge-library #rk-knowledge .kl-chapter-body { padding: 4px 100px 40px 64px; font-size: 14px; line-height: 1.95; color: var(--kl-muted); }
body.qiai-knowledge-library #rk-knowledge .kl-chapter-body :is(h3,h4) { color: var(--kl-ink); font-size: 17px; margin-bottom: 10px; }
body.qiai-knowledge-library #rk-knowledge .kl-chapter-body .knowledge-grid { display: block; margin: 0; }
body.qiai-knowledge-library #rk-knowledge .kl-chapter-body .knowledge-card { display: grid; grid-template-columns: 120px minmax(0,1fr); gap: 24px; padding: 20px 0; border-top: 1px solid var(--kl-line); background: transparent; border-radius: 0; box-shadow: none; }
body.qiai-knowledge-library #rk-knowledge .kl-chapter-body .knowledge-card h3 { font-size: 16px; line-height: 1.8; margin: 0; }
body.qiai-knowledge-library #rk-knowledge .kl-original-introduction { padding-bottom: 30px; }
body.qiai-knowledge-library #rk-knowledge .kl-small-label { display: block; font-size: 11px; color: var(--kl-green); margin-bottom: 12px; }
body.qiai-knowledge-library #rk-knowledge .kl-origin-copy p + p { margin-top: 15px; }
body.qiai-knowledge-library #rk-knowledge .kl-original-figures { display: flex; justify-content: space-between; gap: 20px; padding-top: 24px; }
body.qiai-knowledge-library #rk-knowledge .feature-number .number { display: block; font-size: 27px; font-weight: 400; color: var(--kl-green); }
body.qiai-knowledge-library #rk-knowledge .feature-number .label { font-size: 11px; }
body.qiai-knowledge-library #rk-knowledge .timeline-item { display: grid; grid-template-columns: 120px minmax(0,1fr); gap: 24px; padding: 22px 0; border-top: 1px solid var(--kl-line); }
body.qiai-knowledge-library #rk-knowledge .timeline-item:first-child { border: 0; }
body.qiai-knowledge-library #rk-knowledge .timeline-year { color: var(--kl-green); font-size: 16px; }
body.qiai-knowledge-library #rk-knowledge .notice-box { border-top: 1px solid var(--kl-ink); padding-top: 25px; margin-top: 25px; }
body.qiai-knowledge-library #rk-knowledge .notice-item { display: flex; gap: 24px; padding: 18px 0; border-top: 1px solid var(--kl-line); }
body.qiai-knowledge-library #rk-knowledge .notice-num { min-width: 24px; color: var(--kl-green); font: 19px/1.8 Georgia,serif; }
body.qiai-knowledge-library #rk-knowledge .acupoint-card { display: grid; grid-template-columns: 120px minmax(0,1fr); gap: 5px 24px; padding: 21px 0; border-top: 1px solid var(--kl-line); }
body.qiai-knowledge-library #rk-knowledge .acupoint-card h4 { grid-column: 1; grid-row: 1 / 3; margin: 0; }
body.qiai-knowledge-library #rk-knowledge .acupoint-card .location { color: var(--kl-green); font-size: 12px; }
body.qiai-knowledge-library #rk-knowledge .acupoint-card p { grid-column: 2; }
body.qiai-knowledge-library #rk-knowledge .kl-reading-band { padding: 45px 0 53px; border-top: 1px solid var(--kl-line); background: #f0f3f0; }
body.qiai-knowledge-library #rk-knowledge .kl-further-reading > div:last-child { margin-top: 28px; }
body.qiai-knowledge-library #rk-knowledge .kl-further-link { display: grid; grid-template-columns: 310px minmax(0,1fr); gap: 30px; padding: 15px 0; border-top: 1px solid #ccd7ce; font-size: 14px; }
body.qiai-knowledge-library #rk-knowledge .kl-further-link strong { font-weight: 500; }
body.qiai-knowledge-library #rk-knowledge .kl-further-link strong::after { content: " ↗"; color: var(--kl-green); }
body.qiai-knowledge-library #rk-knowledge .kl-further-link span { color: var(--kl-muted); font-size: 12px; }
/* Visibility must switch immediately so the shared search script can focus its input. */
body.qiai-knowledge-library .qiai-search-layer { transition: opacity 180ms ease, transform 180ms ease; }
/* Retain the existing collapsible WeChat entry after removing the old page design layers. */
body.qiai-knowledge-library .qa-wechat { position: fixed; right: 12px; bottom: 164px; z-index: 90; }
body.qiai-knowledge-library .qa-wechat > summary { list-style: none; cursor: pointer; border: 1px solid var(--kl-line); border-radius: 0; background: #fff; padding: 12px 10px; color: var(--kl-ink); font: 500 12px/1.6 var(--kl-font); }
body.qiai-knowledge-library .qa-wechat > summary::-webkit-details-marker { display: none; }
body.qiai-knowledge-library .qa-wechat > summary::after { content:"+"; margin-left: 8px; }
body.qiai-knowledge-library .qa-wechat[open] > summary::after { content:"−"; }
body.qiai-knowledge-library .qa-wechat > summary:focus-visible { outline: 2px solid var(--kl-green); outline-offset: 4px; }
body.qiai-knowledge-library .qa-wechat .floating-qrcode { position: absolute !important; top: auto !important; right: 0 !important; bottom: 56px !important; transform: none !important; width: 160px; margin: 0; border: 1px solid var(--kl-line); border-radius: 0; box-shadow: 0 12px 30px rgb(27 48 45 / 10%); }
body.qiai-knowledge-library .qa-wechat:not([open]) .floating-qrcode { display:none !important; }
@media (prefers-reduced-motion:reduce) {
  body.qiai-knowledge-library #rk-knowledge * { transition: none; }
}

body.qiai-knowledge-library #rk-knowledge .kl-chapter-body .kl-chapter-lead { color: var(--kl-green); font-size: 13px; padding-bottom: 25px; }