:root{--bg:#f7f7f4;--ink:#242438;--muted:#737581;--line:#e9e9e4;--purple:#6650d8;--light:#efecfd;--white:#fff;--radius:18px}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);margin:0;font-family:Inter,PingFang SC,Microsoft YaHei,Arial,sans-serif;font-size:14px;line-height:1.65}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.5;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible{outline-offset:3px;outline:3px solid #a79be7}a{color:inherit;text-decoration:none}button{border:0}h1,h2,p{margin:0}h1{letter-spacing:-1px;font-size:32px;line-height:1.4}h2{font-size:20px;line-height:1.5}small{color:var(--muted);margin-top:7px;display:block}.shell{min-height:100vh;display:flex}.sidebar{border-right:1px solid var(--line);background:#fbfbf9;flex-direction:column;flex-shrink:0;width:238px;padding:36px 22px;display:flex;position:fixed;inset:0 auto 0 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