/* Knowledge: a quiet diagram and reading desk. Scoped to this module. */
.knowledge-page{--knowledge-ink:#282b2c;--knowledge-muted:#70756f;--knowledge-line:#deded7;--knowledge-accent:#617464;color:var(--knowledge-ink);min-width:0}
.knowledge-page [hidden]{display:none!important}
.knowledge-heading{display:flex;align-items:baseline;justify-content:space-between;gap:24px;padding-bottom:28px;border-bottom:1px solid #b7b9b0}
.knowledge-heading h1{margin:0;font-family:"SimSun","Songti SC",serif;font-size:38px;letter-spacing:1px;font-weight:500;line-height:1.3}
.knowledge-heading>span{font-size:17px;color:var(--knowledge-muted);white-space:nowrap}
.knowledge-toolbar{display:flex;justify-content:space-between;align-items:center;gap:28px;padding:19px 0 24px}
.knowledge-tabs{display:flex;gap:26px;flex-shrink:0}
.knowledge-tabs button{position:relative;border:0;background:none;color:#80827c;padding:12px 0;min-height:46px;font:inherit;font-size:17px;cursor:pointer;white-space:nowrap}
.knowledge-tabs button[aria-selected=true]{color:var(--knowledge-ink)}
.knowledge-tabs button[aria-selected=true]:after{content:"";height:2px;background:var(--knowledge-ink);position:absolute;bottom:0;left:0;right:0}
.knowledge-tabs button>span{font-size:16px;margin-left:8px;color:#81877b;font-variant-numeric:tabular-nums}
.knowledge-search{display:flex;gap:11px;align-items:center;width:min(330px,42%);color:#92948c}
.knowledge-search svg{width:21px;height:21px;flex-shrink:0;fill:none;stroke:currentColor;stroke-width:1.4}
.knowledge-search input{border:0;border-bottom:1px solid #d7d9cf;background:transparent;font:inherit;font-size:16px;padding:10px 0;width:100%;min-width:0;color:var(--knowledge-ink);border-radius:0;outline:none}
.knowledge-search input:focus{border-color:var(--knowledge-accent)}
.knowledge-search input::placeholder{color:#8a8d83}
.knowledge-workspace{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(330px,1fr);gap:32px;align-items:start;min-width:0}
.knowledge-map-panel{min-width:0;padding:25px 22px 24px;background:#f1f2ec;border:1px solid #e3e5dc;border-radius:5px}
.knowledge-map-header{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:21px}
.knowledge-map-header h2{margin:0;font-size:19px;font-weight:500;white-space:nowrap}
.knowledge-map-header h2>span{font-family:Georgia,serif;font-size:19px;font-weight:400;color:#8a9383;margin-left:9px}
.knowledge-expand{padding:7px 0;border:0;background:none;font:inherit;font-size:14px;color:#747d70;cursor:pointer;white-space:nowrap}
.knowledge-expand>span{margin-left:8px;font-size:18px}
.knowledge-expand:hover{color:#303d31}
.knowledge-diagram{position:relative;display:grid;grid-template-columns:minmax(0,1fr) 85px minmax(0,1fr);gap:10px;min-width:0;min-height:565px;isolation:isolate}
.knowledge-side{position:relative;z-index:1;display:flex;flex-direction:column;justify-content:space-around;gap:15px;min-width:0}
.knowledge-branch{min-width:0}
.knowledge-stage{display:flex;align-items:center;gap:10px;width:100%;text-align:left;background:#fbfcf8;border:1px solid #dce0d3;border-radius:3px;padding:13px 12px;min-height:58px;color:#4e594d;font:inherit;cursor:pointer;transition:background .15s,border-color .15s,color .15s}
.knowledge-stage>span{font:15px Georgia,serif;color:#87917e;flex-shrink:0}
.knowledge-stage>strong{font-size:15px;line-height:1.55;font-weight:500;overflow-wrap:anywhere}
.knowledge-stage:hover{border-color:#9ca993;background:#f7f9f2}
.knowledge-stage.is-selected{color:#fff;background:#334b3a;border-color:#334b3a}
.knowledge-stage.is-selected>span{color:#bbcdac}
.knowledge-center{display:flex;align-items:center;justify-content:center;position:relative;z-index:1;min-width:0}
.knowledge-root{width:77px;height:94px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#f1f2ec;border:1px solid #c0c8b7;border-radius:45px;color:#45523e}
.knowledge-root strong{font:26px/1.3 Georgia,serif;letter-spacing:-1px}
.knowledge-root span{font-size:13px;line-height:1.8;color:#75806d}
.knowledge-wires{position:absolute;width:100%;height:100%;inset:0;z-index:0;pointer-events:none;overflow:visible}
.knowledge-wires path{fill:none;stroke:#ced4c4;stroke-width:1.15}
.knowledge-wires path.is-selected{stroke:#71886b;stroke-width:1.65}
.knowledge-branch-topics{display:flex;flex-direction:column;gap:0;margin:9px 0 4px 20px;border-left:1px solid #d3d9ca;padding-left:12px}
.knowledge-branch-topics button{border:0;background:none;text-align:left;padding:6px 0;color:#717a6a;font:inherit;font-size:14px;line-height:1.5;cursor:pointer;overflow-wrap:anywhere}
.knowledge-branch-topics button:hover,.knowledge-branch-topics button[aria-pressed=true]{color:#273c2b;text-decoration:underline;text-underline-offset:4px}
.knowledge-diagram.is-expanded{align-items:start}
.knowledge-diagram.is-expanded .knowledge-center{height:100%}
.knowledge-diagram.is-expanded .knowledge-side{gap:22px}
.knowledge-reader{min-width:0;position:sticky;top:26px;padding:5px 0 0;scroll-margin-top:25px;outline:none}
.knowledge-reader-top{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:19px;color:#8a9187;font-size:15px;letter-spacing:1px}
.knowledge-reader-navigation{display:flex;gap:8px}
.knowledge-reader-navigation button{border:1px solid #dddeda;background:transparent;width:34px;height:34px;border-radius:50%;font-size:19px;color:#687060;cursor:pointer;line-height:1}
.knowledge-reader-navigation button:hover:not(:disabled){background:#edeee8;border-color:#b1b8a8}
.knowledge-reader-navigation button:disabled{opacity:.35;cursor:default}
.knowledge-reader h2{font:400 clamp(27px,2.4vw,37px)/1.22 Georgia,"Microsoft YaHei",serif;letter-spacing:-.8px;overflow-wrap:anywhere;margin:0 0 22px;color:#282e27}
.knowledge-intro{font-size:16px;line-height:1.95;color:#6c7266;margin:0 0 25px}
.knowledge-parent{border:0;border-bottom:1px solid #d0d6c7;background:none;font:inherit;font-size:15px;color:#6b795f;padding:0 0 4px;margin:-7px 0 16px;text-align:left;cursor:pointer;overflow-wrap:anywhere}
.knowledge-topics{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 28px}
.knowledge-topics button{border:1px solid #d8ddd0;background:transparent;color:#66735c;padding:7px 11px;font:inherit;font-size:14px;border-radius:3px;line-height:1.4;cursor:pointer;overflow-wrap:anywhere;max-width:100%;text-align:left}
.knowledge-topics button:hover,.knowledge-topics button[aria-pressed=true]{background:#e7eddf;border-color:#a1b392;color:#32432b}
.knowledge-practice{padding:21px 0;border-top:1px solid var(--knowledge-line);border-bottom:1px solid var(--knowledge-line);margin:0 0 23px}
.knowledge-reader h3{font-size:16px;font-weight:550;margin:0 0 10px}
.knowledge-practice p{font-size:15px;line-height:1.9;color:#777d70;margin:0}
.knowledge-section-heading{display:flex;align-items:baseline;justify-content:space-between;gap:18px}
.knowledge-section-heading>span{font:17px Georgia,serif;color:#8b9481}
.knowledge-empty-note{margin:11px 0 28px;color:#8c9384;font-size:15px}
.knowledge-reader-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:26px}
.knowledge-primary,.knowledge-secondary{display:inline-flex;align-items:center;justify-content:center;gap:15px;min-height:43px;padding:10px 14px;border:1px solid #d4d9cc;border-radius:3px;font:inherit;font-size:15px;background:transparent;color:#67745d;cursor:pointer}
.knowledge-primary{background:#334b3a;border-color:#334b3a;color:#fff}
.knowledge-primary:hover{background:#435f49;border-color:#435f49}
.knowledge-secondary:hover{background:#eaece4;color:#31452e}
.knowledge-note{display:flex;width:100%;align-items:center;gap:22px;justify-content:space-between;background:none;border:0;border-bottom:1px solid var(--knowledge-line);text-align:left;color:#464d41;padding:17px 0;cursor:pointer;font:inherit;min-width:0}
.knowledge-note>span:first-child{min-width:0}
.knowledge-note strong{font-size:16px;font-weight:500;overflow-wrap:anywhere}
.knowledge-note p{font-size:15px;color:#818776;line-height:1.8;margin:7px 0 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;overflow-wrap:anywhere}
.knowledge-note:hover strong{color:#203a26;text-decoration:underline;text-underline-offset:4px}
.knowledge-row-arrow{font-size:20px;color:#8b957f;flex-shrink:0}
.knowledge-library{min-width:0;padding-top:13px}
.knowledge-library-heading{display:flex;justify-content:space-between;gap:20px;align-items:center;margin:0 0 25px}
.knowledge-library-heading h2{font-size:24px;font-weight:500;margin:0}
.knowledge-note-list{border-top:1px solid #b7b9b0}
.knowledge-library .knowledge-note{padding:25px 0}
.knowledge-library .knowledge-note strong{font-size:21px}
.knowledge-empty{padding:45px 0;color:#798271}
.knowledge-empty h3{font-size:22px;font-weight:400;margin:0 0 14px;color:#5b6852}
.knowledge-empty p{font-size:16px;line-height:1.8;margin:0}
.knowledge-search-results{min-height:500px}
.knowledge-search-results>button{display:flex;justify-content:space-between;gap:20px;align-items:center;width:100%;padding:19px 2px;border:0;border-bottom:1px solid #d7dccf;background:none;font:inherit;color:#45533b;text-align:left;cursor:pointer}
.knowledge-search-results>button strong{display:block;font-size:17px;font-weight:500;overflow-wrap:anywhere}
.knowledge-search-results>button>span>span{display:block;font-size:14px;color:#86917b;margin-top:5px;overflow-wrap:anywhere}
.knowledge-search-results>button:hover{background:#e8edde}
.knowledge-live{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
@media(min-width:1550px){.knowledge-workspace{gap:42px}.knowledge-map-panel{padding:27px}.knowledge-stage{padding:14px}.knowledge-stage>strong{font-size:16px}}
@media(max-width:1250px){.knowledge-workspace{grid-template-columns:1fr;gap:35px}.knowledge-reader{position:static;padding:9px 0 0;max-width:none}.knowledge-diagram{grid-template-columns:minmax(0,1fr) 130px minmax(0,1fr);gap:24px;min-height:575px}.knowledge-stage>strong{font-size:17px}.knowledge-root{width:94px;height:110px}.knowledge-root strong{font-size:31px}.knowledge-reader h2{font-size:34px}.knowledge-reader-actions{margin-top:24px}.knowledge-map-panel{padding:26px}.knowledge-intro{max-width:760px}.knowledge-practice p{max-width:760px}.knowledge-related .knowledge-note{max-width:760px}}
@media(max-width:600px){.knowledge-heading{display:block;padding-bottom:25px}.knowledge-heading h1{font-size:32px}.knowledge-heading>span{display:block;font-size:16px;margin-top:12px}.knowledge-toolbar{display:block;padding:10px 0 22px}.knowledge-tabs{gap:27px;margin-bottom:13px}.knowledge-tabs button{font-size:16px}.knowledge-search{width:100%;gap:9px}.knowledge-search input{font-size:16px}.knowledge-map-panel{padding:20px 16px}.knowledge-map-header{margin-bottom:25px}.knowledge-map-header h2{font-size:18px}.knowledge-expand{font-size:14px}.knowledge-diagram{display:flex;flex-direction:column;gap:14px;min-height:0;padding-left:19px}.knowledge-center{order:-1;justify-content:flex-start;margin-left:-19px;padding-bottom:8px}.knowledge-root{width:auto;height:auto;border:0;border-radius:0;display:flex;flex-direction:row;gap:13px;padding:0;background:#f1f2ec}.knowledge-root strong{font-size:28px;letter-spacing:0}.knowledge-root span{font-size:14px}.knowledge-wires{display:none}.knowledge-side{gap:14px}.knowledge-diagram:before{content:"";position:absolute;left:0;top:45px;bottom:29px;width:1px;background:#c8d0bd}.knowledge-stage{position:relative;padding:13px 12px;min-height:55px;gap:12px}.knowledge-stage:before{content:"";position:absolute;left:-20px;top:50%;width:19px;height:1px;background:#c8d0bd}.knowledge-stage>strong{font-size:16px}.knowledge-stage>span{font-size:15px}.knowledge-diagram.is-expanded .knowledge-side{gap:14px}.knowledge-branch-topics button{font-size:15px}.knowledge-reader h2{font-size:32px}.knowledge-intro{font-size:16px}.knowledge-workspace{gap:25px}.knowledge-reader-top{margin-bottom:16px}.knowledge-topics button{font-size:15px}.knowledge-reader-actions{gap:10px}.knowledge-primary,.knowledge-secondary{font-size:15px;padding:11px 12px}.knowledge-library-heading{gap:10px}.knowledge-library-heading h2{font-size:21px}.knowledge-library .knowledge-note strong{font-size:19px}.knowledge-search-results{min-height:230px}.knowledge-search-results>button strong{font-size:16px}}
@media(prefers-reduced-motion:reduce){.knowledge-stage{transition:none}}