:root{--ink:#17231f;--muted:#65736d;--green:#204f42;--mint:#dcece5;--paper:#f3f1ea;--white:#fff;--gold:#c4914d;--line:#d9ded9;--danger:#91473f}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}.shell{min-height:100vh;display:grid;grid-template-columns:220px 1fr}.rail{position:sticky;top:0;height:100vh;background:#14231e;color:white;padding:25px 18px;display:flex;flex-direction:column}.logo{display:flex;align-items:center;gap:10px;color:white;text-decoration:none;padding:0 10px 28px}.logo>b{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:#d5b06d;color:#17231f;font:700 23px Georgia}.logo span{display:grid}.logo small{font-size:9px;letter-spacing:.15em;color:#9fb4ab}.rail nav{display:grid;gap:5px}.rail 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