:root{--navy:#14274a;--blue:#285ebd;--blue2:#eaf2ff;--ink:#132238;--muted:#66758a;--line:#dbe4ef;--bg:#f4f7fb;--white:#fff;--red:#b42318;--green:#147d64;--amber:#a15c00;--shadow:0 18px 50px rgba(27,51,84,.1)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.6 Inter,"Noto Sans SC","Microsoft YaHei",sans-serif}a{color:inherit}.sidebar{background:linear-gradient(180deg,#102447,#183968);bottom:0;color:#fff;display:flex;flex-direction:column;left:0;padding:24px 18px;position:fixed;top:0;width:250px;z-index:5}.brand{align-items:center;display:flex;gap:12px;text-decoration:none}.brand>span{align-items:center;background:#fff;border-radius:15px;color:var(--blue);display:flex;font-size:26px;font-weight:900;height:48px;justify-content:center;width:48px}.brand strong{font-size:17px}.brand small{display:block;font-size:11px;font-weight:500;letter-spacing:.08em;opacity:.68}.sidebar nav{display:grid;gap:7px;margin-top:38px}.sidebar nav 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