:root{--paper:#f7f8fa;--white:#fff;--text:#101b30;--muted:#738099;--line:#e7ebf1;--blue:#3265e9;--teal:#13ad9c;--night:#101b30;--side:#111e31;--shadow:0 20px 60px rgba(19,35,69,.05);font-family:Inter,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--text)}*{box-sizing:border-box}body{margin:0;background:var(--paper)}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}a{color:inherit;text-decoration:none}.app{display:flex;min-height:100vh}.sidebar{width:246px;flex-shrink:0;background:var(--side);color:#d4ddeb;display:flex;flex-direction:column;padding:30px 15px 22px;position:sticky;top:0;height:100vh}.brand{display:flex;gap:12px;align-items:center;padding:0 12px 38px;color:white}.brand-symbol{height:43px;width:43px;display:grid;place-items:center;background:#213d64;border:1px solid #4976b0;border-radius:13px;font-size:21px;font-weight:700;position:relative}.brand-symbol 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