/* Exercises and BC content adapters. JC LAB visual tokens live in jclab.css. */
@font-face{font-family:BC Sans;src:url('fonts/atlas-sans.woff2') format('woff2');font-weight:400 600;font-display:swap}
:root{--serif:'BC Serif','Songti SC',serif;--display:'BC Serif','Songti SC',serif;--sans:'BC Sans','PingFang SC',sans-serif}
body{font-family:var(--sans)}[hidden]{display:none!important}:focus-visible{outline:2px solid var(--dc,var(--text));outline-offset:4px}.skip{position:fixed;top:-80px;left:16px;z-index:100;background:var(--text);color:var(--bg);padding:8px 18px}.skip:focus{top:8px}
.graph-scope{color:var(--muted);font-size:13px;margin:28px 0 -30px}.home-graph{height:520px}.catalog-top{display:flex;align-items:baseline;justify-content:space-between;padding-top:56px}.catalog-top h2{font-size:28px}.catalog-top p{font-size:13px;color:var(--muted)}.domain-head{padding-top:38px}.lead-art .nm{font-size:clamp(28px,4vw,52px);left:22px;text-align:right;line-height:1.4;word-break:keep-all;overflow-wrap:anywhere}.lead .kicker{margin:0}.lead-text h2{font-size:clamp(28px,3.6vw,44px)}.card .no{font-size:12px}.card .who{font-size:13px}.card .en{overflow-wrap:anywhere;padding-right:20px}.card h3{padding-right:35px;font-size:22px}.card p{font-family:var(--sans);font-size:14px}.long-title h1{font-size:clamp(28px,4vw,46px)}.cover .expert{font-family:var(--sans);font-size:13px}.sources-list li{margin:18px 0}.sources-list p{font:14px/1.8 var(--sans);color:var(--muted);margin:6px 0}.method-io{display:grid;grid-template-columns:1fr 1fr;gap:32px}.method-io h3{font-size:18px}.method-io li,.sec>ul>li{font:16px/1.9 var(--sans);margin:12px 0}.bc-example-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.bc-example-grid>div{padding:22px;background:var(--card)}.bc-example-grid h3{font:600 13px var(--sans);color:var(--muted)}.bc-example-grid p{font:16px/1.9 var(--sans);margin:14px 0 0}.caption{font:13px/1.7 var(--sans)!important}.sec .notice,.formula{padding:20px;background:var(--card);font:15px/1.8 var(--sans)}.sec details{font:14px/1.8 var(--sans);margin-top:24px}.sec summary{cursor:pointer}.bc-quiz{font:16px/1.9 var(--sans)}.quiz-option{display:block;width:100%;margin:10px 0;padding:15px 18px;font:15px/1.7 var(--sans);text-align:left;color:var(--text);border:1px solid var(--line-strong);background:var(--paper);border-radius:4px;cursor:pointer}.quiz-option:hover,.quiz-option[aria-pressed=true]{border-color:var(--dc);background:var(--card)}.quiz-feedback{padding:18px;background:var(--card);font-size:14px}.quiz-feedback.wrong{color:var(--red)}.use-section{font:15px/1.8 var(--sans)}.use-section label{display:block;font-size:14px;margin:20px 0 8px}.use-section textarea{width:100%;resize:vertical;padding:14px;background:var(--paper);color:var(--text);font:15px/1.8 var(--sans);border:1px solid var(--line-strong);border-radius:4px}.bc-button{padding:10px 20px;margin-top:14px;min-height:44px;border:1px solid var(--text);background:var(--text);color:var(--bg);font:14px var(--sans);border-radius:4px;cursor:pointer}.bc-button:hover{opacity:.8}.bc-button.secondary{background:var(--paper);color:var(--text)}.agent-link{margin:14px 0 0;display:block;font-size:14px}.bc-toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%,10px);opacity:0;pointer-events:none;padding:10px 20px;background:var(--text);color:var(--bg);font-size:14px;border-radius:4px;z-index:70;transition:opacity .18s,transform .18s}.bc-toast.visible{opacity:1;transform:translate(-50%,0)}
.labs-page,.agent-page{min-height:75vh}.intro-note{color:var(--muted);font-size:15px;margin:30px 0}.labs-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;margin:40px 0 64px}.lab-card{text-decoration:none;display:block}.lab-art{height:220px;background:var(--cv);color:white;position:relative;padding:24px}.lab-art .glyph{color:white;width:150px;height:150px;margin:auto}.lab-art>span{position:absolute;bottom:16px;right:20px;font-size:13px}.lab-card h2{font-size:26px;margin-top:22px}.lab-card p{font-size:15px;color:var(--muted)}.lab-card .btn-line{margin-top:10px}.agent-body{max-width:800px;margin:44px auto 80px}.agent-body section{margin:0 0 46px}.agent-body h2{font-size:26px;margin-bottom:20px}.agent-body pre{background:var(--card);padding:20px;white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px}.agent-body table{width:100%;border-collapse:collapse;font-size:14px}.agent-body th,.agent-body td{padding:14px 10px;border-bottom:1px solid var(--line);text-align:left}.agent-body code{overflow-wrap:anywhere}.agent-body li{margin-top:10px}
/* Three checked numerical demonstrations inside the upstream reading layout. */
.experiment{font-family:var(--sans);background:var(--card);padding:24px;border-radius:4px}.experiment .section-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}.experiment .section-head h2{font-size:22px;margin:0}.experiment .section-head p{font:13px var(--sans);color:var(--muted)}.experiment .button{border:1px solid var(--line-strong);background:var(--paper);color:var(--text);padding:9px 12px;min-height:40px;border-radius:4px;white-space:nowrap;font:13px var(--sans);cursor:pointer}.experiment-assumptions{font:13px/1.8 var(--sans);color:var(--muted);margin:18px 0 24px}.experiment-controls{display:grid;grid-template-columns:1fr 1fr;gap:16px 24px;margin-bottom:30px}.experiment-field>span:first-child{display:block;font-size:13px;margin-bottom:8px}.field-pair{display:flex;align-items:center;gap:12px}.field-pair input[type=range]{width:100%;min-width:35px;accent-color:var(--dc);height:30px}.field-pair input[type=number]{width:88px;min-width:0;padding:8px;color:var(--text);background:var(--paper);border:1px solid var(--line-strong);border-radius:3px;text-align:right;font:14px var(--sans);font-variant-numeric:tabular-nums}.experiment-error{color:var(--red);padding:20px;background:var(--paper)}.result-summary{display:flex;flex-wrap:wrap;gap:18px 28px}.result-metric>span{font-size:13px;color:var(--muted)}.result-metric strong{display:block;font:400 32px/1.4 var(--sans);margin-top:6px;font-variant-numeric:tabular-nums}.result-metric.secondary strong{font-size:23px}.result-metric small{font-size:13px;color:var(--muted);margin-left:5px}.result-message{flex-basis:100%;font:14px/1.8 var(--sans);margin:0 0 10px}.result-message.risk{color:var(--red)}.experiment-chart{height:280px;min-width:0}.chart-legend{font:13px var(--sans);color:var(--muted);margin:14px 0;display:flex;gap:20px;flex-wrap:wrap}.chart-legend>span{display:flex;gap:8px;align-items:center}.chart-legend i{width:16px;height:3px;background:var(--dc)}.chart-legend i.other{background:var(--muted)}.chart-caption{font:13px/1.8 var(--sans);color:var(--muted)}.result-table table{width:100%;border-collapse:collapse;font:13px/1.8 var(--sans);font-variant-numeric:tabular-nums}.result-table th{font-weight:400;color:var(--muted)}.result-table th,.result-table td{text-align:right;padding:9px 4px;border-bottom:1px solid var(--line)}.result-table th:first-child,.result-table td:first-child{text-align:left}.experiment .formula{padding:16px;background:var(--paper);font-size:13px;margin-top:24px}
@media(max-width:760px){.header-inner{gap:14px}.header-inner nav{gap:14px}.brand{font-size:16px}.method-io,.bc-example-grid{grid-template-columns:1fr;gap:20px}.labs-grid{grid-template-columns:1fr;gap:40px}.lab-art{height:220px}.agent-body table{font-size:12px}.agent-body th,.agent-body td{padding:10px 4px}.agent-body code{font-size:11px}.home-graph{height:400px}.graph-scope{margin-bottom:-25px;line-height:1.8}.lead-art .nm{font-size:32px}.catalog-top{padding-top:36px}.catalog-top h2{font-size:24px}.card h3{font-size:22px}.experiment{padding:18px}.experiment .section-head{display:block}.experiment .section-head .button{margin-top:12px}.experiment-controls{grid-template-columns:1fr}.result-summary{gap:12px 24px}.result-metric.secondary strong{font-size:22px}.experiment-chart{height:260px}.result-metric strong{font-size:30px}}
@media(max-width:420px){.header-inner{padding:0 16px;gap:10px}.header-inner nav{gap:10px;font-size:12px;letter-spacing:0}.brand{font-size:15px;letter-spacing:0}.theme-toggle{width:28px;flex:none}.wrap{padding-left:18px;padding-right:18px}.masthead .sub{letter-spacing:.08em;font-size:11px}.cover .tagline{font-size:16px}.long-title h1{font-size:28px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}

/* Keep all four primary destinations available on narrow screens. */
@media(max-width:680px){.header-inner{height:auto;min-height:88px;display:grid;grid-template-columns:1fr 30px;gap:0 16px;padding-top:10px;padding-bottom:8px}.header-inner nav{display:flex;grid-column:1 / -1;grid-row:2;gap:24px;font-size:13px;justify-content:center}.theme-toggle{grid-column:2;grid-row:1}.toolbar{top:88px}.sec,.domain-sec,#graph{scroll-margin-top:108px}}
@media(min-width:681px) and (max-width:960px){.lead-art{height:330px;aspect-ratio:auto}.toolbar{flex-wrap:wrap}.search{flex-basis:100%}.tabs{width:100%;justify-content:space-between}}

@media(max-width:680px){.layout{padding-top:28px}.footer-links{flex-wrap:wrap;gap:10px 18px}}

#graph,#catalog,.domain-sec{scroll-margin-top:136px}
@media(min-width:681px) and (max-width:960px){#graph,#catalog,.domain-sec{scroll-margin-top:184px}}
@media(max-width:680px){#graph,#catalog,.domain-sec{scroll-margin-top:214px}}

/* Evaluation stays within the original editorial reading system. */
.agent-body:has(.evaluation){max-width:1100px}.agent-body>section:first-child,.agent-connection{max-width:800px;margin-left:auto!important;margin-right:auto!important}.evaluation{padding-top:40px;border-top:1px solid var(--line-strong);scroll-margin-top:120px}.evaluation>.issue{margin-bottom:16px}.eval-takeaway{font-family:var(--serif);font-size:24px;line-height:1.65;max-width:850px}.eval-table{margin:28px 0;overflow-x:auto}.eval-table th{font-weight:500}.eval-table td{min-width:160px}.eval-case{border-top:1px solid var(--line-strong);scroll-margin-top:110px}.eval-case:last-of-type{border-bottom:1px solid var(--line-strong)}.eval-case>summary{display:flex;justify-content:space-between;align-items:baseline;gap:24px;cursor:pointer;padding:24px 30px 24px 0;position:relative;list-style:none}.eval-case>summary::-webkit-details-marker{display:none}.eval-case>summary:after{content:'+';position:absolute;right:0}.eval-case[open]>summary:after{content:'−'}.eval-case>summary>span{font:600 20px/1.6 var(--serif)}.eval-case>summary small{color:var(--muted);font:13px/1.6 var(--sans)}.eval-case-body{padding-bottom:28px}.eval-case blockquote{margin:20px 0;padding:18px 24px;border-left:2px solid var(--line-strong);background:var(--card);font-size:15px;line-height:1.9}.eval-pair{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;margin:30px 0}.eval-pair article+article{border-left:1px solid var(--line);padding-left:40px}.eval-pair h4{font:600 17px var(--sans);margin:0}.eval-pair .caption{margin:8px 0 18px}.eval-answer{white-space:pre-wrap;overflow-wrap:anywhere;font:15px/1.9 var(--sans)}.eval-protocol{margin:26px 0 60px;font-size:14px}.eval-protocol summary,.agent-connection summary{cursor:pointer}.eval-protocol p{color:var(--muted);line-height:1.9}.agent-connection{padding-top:35px}.agent-connection details{margin-top:28px}@media(max-width:760px){.eval-takeaway{font-size:21px}.eval-case>summary{display:block}.eval-case>summary small{display:block;margin-top:6px}.eval-pair{grid-template-columns:1fr;gap:28px}.eval-pair article+article{border-left:0;border-top:1px solid var(--line);padding:28px 0 0}.eval-answer{font-size:14px}.eval-case blockquote{padding:16px}.eval-table table,.eval-table tbody{display:block}.eval-table thead{display:none}.eval-table tr{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0 18px;padding:20px 0;border-bottom:1px solid var(--line)}.eval-table th,.eval-table td{border:0;padding:0;font-size:14px;min-width:0}.eval-table th{grid-column:1 / -1;font-size:17px;margin-bottom:14px}.eval-table td:before{display:block;color:var(--muted);font-size:12px;margin-bottom:6px}.eval-table td:nth-child(2):before{content:"实际选择"}.eval-table td:nth-child(3):before{content:"复核判断"}.eval-case>summary:after{top:26px}.evaluation{scroll-margin-top:120px}}

/* Extended catalog categories retain the upstream visual vocabulary. */
:root{--d-product:var(--d-psychology);--d-growth:var(--d-systems);--d-operations:var(--d-economics);--d-organization:var(--d-strategy);--d-practice:var(--d-game);--d-expression:var(--d-physics)}
.dom-product{--dc:var(--d-psychology);--cv:var(--d-psychology)}.dom-growth{--dc:var(--d-systems);--cv:var(--d-systems)}.dom-operations{--dc:var(--d-economics);--cv:var(--d-economics)}.dom-organization{--dc:var(--d-strategy);--cv:var(--d-strategy)}.dom-practice{--dc:var(--d-game);--cv:var(--d-game)}.dom-expression{--dc:var(--d-physics);--cv:var(--d-physics)}
.toolbar{flex-wrap:wrap}.toolbar .search{flex-basis:100%}.tabs{width:100%;overflow-x:auto;flex-wrap:nowrap;justify-content:flex-start;gap:22px;padding-bottom:8px}.tabs .tab{flex-shrink:0}.home-graph{height:620px}.legend{flex-wrap:wrap}.source-note{padding:18px 22px;border-left:2px solid var(--dc);background:var(--card);margin-bottom:40px}.labs-grid .lab-card h2{font-size:24px}
@media(max-width:680px){.home-graph{height:460px}.header-inner nav{gap:22px}.tabs{gap:18px}.cover h1{overflow-wrap:anywhere}.people-strip .pcard{min-width:0}}

@media(max-width:680px){#graph .sec-head{display:block}#graph .sec-head h2{margin-bottom:10px}#graph .sec-head>span{display:block;text-align:left}.graph-scope{margin-bottom:0}}