:root{color:#1d1d1f;background:#fff;font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,sans-serif;font-synthesis:none;--ink: #1d1d1f;--subtle-ink: #656569;--muted-ink: #8d8d92;--canvas: #ffffff;--sidebar: #fafafa;--line: #e7e7e7;--active: #111111}*{box-sizing:border-box}body{min-width:320px;margin:0;background:var(--canvas)}button,a{font:inherit}button{cursor:pointer}.platformShell{min-height:100vh;padding-left:232px;background:var(--canvas)}.rail{position:fixed;z-index:3;top:0;bottom:0;left:0;display:flex;flex-direction:column;width:232px;min-height:100dvh;padding:22px 12px 18px;overflow-y:auto;border-right:1px solid var(--line);background:var(--sidebar)}.railBrand{display:flex;align-items:center;gap:9px;padding:6px 9px 25px;color:var(--ink);font-size:14px;font-weight:650;text-decoration:none}.railBrand img{width:25px;height:25px;border-radius:6px;object-fit:cover}.navigation{display:grid;gap:2px}.navItem{width:100%;padding:8px 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