:root{--ink:#111;--muted:#6f736f;--line:#dedfdb;--surface:#fff;--soft:#f2f2f2;--page:#f6f6f3;--brand:#f0ed00;--green:#123d34;--danger:#a83c32;--sidebar:232px}*{box-sizing:border-box}html{background:var(--page);min-height:100%}body{min-height:100%;color:var(--ink);background:var(--page);letter-spacing:0;-webkit-font-smoothing:antialiased;margin:0;font-family:Arial,PingFang SC,Microsoft YaHei,sans-serif}button,input,select,textarea{font:inherit;letter-spacing:0}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{cursor:pointer}.page-shell{grid-template-columns:var(--sidebar) minmax(0, 1fr);min-height:100vh;display:grid}.sidebar{color:#fff;background:var(--green);flex-direction:column;gap:24px;height:100vh;padding:24px 16px;display:flex;position:sticky;top:0}.brand{font-size:22px;font-weight:900}.brand 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