:root{--bg:#f5f6f0;--paper:#fffefb;--ink:#18352c;--muted:#65776b;--line:#dfe6dc;--green:#216547;--light:#e8f0e3;--gold:#b98031;--shadow:0 14px 50px #203c2810}*{box-sizing:border-box}body{margin:0;font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);font-size:14px;line-height:1.7}button,input,textarea,select{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #bc993d;outline-offset:3px}[hidden]{display:none!important}.top{padding:20px 4.3%;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:#fffefbcc}.brand{display:flex;gap:11px;align-items:center;font-size:18px;font-weight:650}.brand-mark{display:grid;place-items:center;border:1px 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solid var(--line);border-bottom:1px solid var(--line);overflow-x:auto;padding:0 20px;gap:12px}.tabbar button{border:0;border-bottom:3px solid transparent;background:none;color:var(--muted);padding:17px 7px;font-size:12px;white-space:nowrap}.tabbar button.active{border-bottom-color:var(--green);color:var(--green);font-weight:700}.tab-content{padding:25px;min-height:250px}.pane-heading{display:flex;justify-content:space-between;align-items:start;gap:15px}.pane-heading h3{font-size:16px}.pane-heading p{margin-top:4px}.relation-list{max-height:430px;overflow:auto}.rel-row{display:grid;grid-template-columns:1fr auto;gap:9px;padding:12px 0;border-bottom:1px solid var(--line);align-items:center}.rel-main{background:none;border:0;padding:0;text-align:left;font-size:12px;color:var(--ink)}.rel-main small{display:block;color:var(--muted);font-size:10px;margin-top:4px}.rel-main em{font-style:normal;color:var(--green);padding:0 5px}.rel-actions{display:flex;gap:5px}.rel-actions button{padding:4px 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#bbcdb0;border-radius:7px;padding:15px;justify-content:space-between}.guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 24px;margin:20px 0;font-size:12px}.guide-grid h4{color:var(--green)}footer{padding:40px 0;display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted)}footer span{text-align:right;font-size:10px}#toast{position:fixed;z-index:100;bottom:25px;left:50%;transform:translateX(-50%);background:#183d2c;color:white;padding:13px 23px;border-radius:9px;max-width:90vw;box-shadow:var(--shadow);font-size:12px}details{margin-top:15px}summary{cursor:pointer}.offline .input-panel{display:none}.offline .workspace{grid-template-columns:1fr}.offline .service{background:#efe8d5}.offline .guide-download{display:none}@media(min-width:1550px){.workspace{grid-template-columns:320px minmax(0,1fr)}.graph-layout{grid-template-columns:minmax(0,1fr) 260px}.canvas-wrap,#graph{min-height:520px}}@media(max-width:1150px){main{padding:0 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.consent[hidden]{display:none!important}

.wb-open{display:inline-block;text-align:center;white-space:nowrap}.handoff-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:-5px 0 28px}.handoff-steps article{display:flex;gap:13px;padding:15px;background:#fffefb;border:1px solid var(--line);border-radius:9px}.handoff-steps b{color:var(--green);font-size:22px;font-weight:500}.handoff-steps strong{font-size:12px}.handoff-steps p{font-size:11px;color:var(--muted);margin:3px 0 0}.handoff-help{border-top:1px solid var(--line);padding-top:15px;font-size:12px}.handoff-help ol{padding-left:20px}.handoff-help a{text-decoration:underline;color:var(--green)}#wbPrompt{font-size:11px;margin-top:12px;line-height:1.7}.offline .handoff-steps{display:none}@media(max-width:760px){.handoff-steps{grid-template-columns:1fr;gap:8px}.availability .wb-open{margin-top:14px;white-space:normal}.service{font-size:10px;max-width:130px;text-align:center}.teaching-form button{width:100%}}