:root{--ink:#242d2c;--muted:#737c79;--green:#217364;--green-light:#e7f2ee;--line:#dfe5e2;--paper:#fff;--canvas:#f5f7f6;--coral:#b15c47;--amber:#986824;--radius:6px}*{box-sizing:border-box}html{letter-spacing:0}body{margin:0;color:var(--ink);background:var(--canvas);font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;font-size:14px;letter-spacing:0}button,input,select{font:inherit;color:inherit}button,a,input,select{ -webkit-tap-highlight-color:transparent}button{cursor:pointer;border:1px solid var(--line);background:white;border-radius:var(--radius)}button:hover{background:#f0f4f2}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid 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@media print{.topbar,.sidebar,.study-toolbar,.chapter-navigation,.card-footer,.card-head>.icon,dialog,.toast,.book-heading>.icon,.reveal{display:none!important}.app-shell{display:block}body,main{background:white}main{max-width:none;padding:0}.knowledge{border:0;border-radius:0;break-inside:avoid;margin-bottom:24px}.card-body{padding-bottom:0}.answer[hidden]{display:block!important}.aux{display:block}.aux summary{display:block}.book-heading{margin-bottom:20px}.answer-layer{margin-top:5px}.card-head{padding-top:10px}.card-head h2{font-size:16px}.answer{font-size:12px}.question{font-size:12px}.aux{font-size:10px}.map-main{height:auto}.map-toolbar,.node-detail{display:none}.map-workspace{display:block}#graph{height:700px!important}}