:root{--ink:#17201f;--muted:#6d7874;--line:#c8d0cb;--panel:#f4f6f2;--panel-strong:#e7ebe4;--steel:#25312f;--paper:#fbfcf8;--accent:#2b6f8f}*{box-sizing:border-box}body{color:var(--ink);background-color:#eef1ec;background-image:linear-gradient(90deg,#17201f0a 1px,#0000 1px),linear-gradient(0deg,#17201f09 1px,#0000 1px),none;background-position:0 0,0 0,0 0;background-repeat:repeat,repeat,repeat;background-size:28px 28px;background-attachment:scroll,scroll,scroll;background-origin:padding-box,padding-box,padding-box;background-clip:border-box,border-box,border-box;margin:0;font-family:Aptos,Noto Sans SC,Microsoft YaHei,sans-serif}button,input{font:inherit}.shell{grid-template-columns:360px minmax(0,1fr);min-height:100vh;display:grid}.rail{color:#edf2ed;background:#18211f;border-right:1px solid #ffffff1f;flex-direction:column;gap:18px;padding:24px;display:flex}.brand{align-items:center;gap:12px;padding-bottom:8px;display:flex}.brand 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