:root{--green:#285c4d;--ink:#203c31;--muted:#53675d;--leaf:#dcebdd;--paper:#f7f9f5;--line:#dce3dc;--red:#a23d38;--amber:#855716;--radius:14px;color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.6;background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,input,textarea,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #709e77;outline-offset:3px}::selection{background:#c6ddc6;color:#17382c}input,textarea{caret-color:var(--green)}::-webkit-scrollbar{width:7px}::-webkit-scrollbar-thumb{background:#b6c8b9;border-radius:7px}h1,h2,h3,p{margin:0}h1{font-size:28px;letter-spacing:-.025em;line-height:1.35}h2{font-size:19px;line-height:1.5}h3{font-size:16px}small,.muted{color:var(--muted)}small{font-size:12px}a{color:var(--green);text-underline-offset:4px}.icon{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}.brand-icon{width:42px;height:42px;flex-shrink:0}.brand{display:flex;gap:11px;align-items:center}.brand strong{display:block;font-family:"Songti SC",SimSun,serif;font-size:21px;letter-spacing:.08em}.brand small{display:block;font-size:11px;color:var(--red);letter-spacing:.1em}.demo-bar{background:#e9efe7;color:#38513d;padding:8px 24px;display:flex;justify-content:center;gap:20px;align-items:center;font-size:12px;border-bottom:1px solid var(--line)}.demo-bar select{font-size:12px;background:#fff;border:1px solid #b8c9b7;border-radius:5px;padding:3px 8px}.shell{display:grid;grid-template-columns:224px 1fr;min-height:calc(100vh - 46px)}.sidebar{background:#fff;padding:32px 22px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:52px;position:sticky;top:0;height:calc(100vh - 46px)}.sidebar nav{display:grid;gap:8px}.nav-item{border:0;background:transparent;text-align:left;padding:13px 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