:root{--bg:#f5f6f8;--panel:#fff;--line:#dfe3e8;--muted:#6f7886;--text:#14243d;--navy:#14243d;--navy-2:#1c3150;--gold:#c9b079;--gold-soft:#f5f0e5;--grey:#e8ebf0;--success:#2f755c;--danger:#b94e4b;--warning:#a36f25;--shadow:0 12px 35px rgba(20,36,61,.08);--radius:8px}*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:"Noto Sans SC","Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg);letter-spacing:0}button,input,select,textarea{font:inherit}button{color:inherit}.hidden{display:none!important}.app-shell{display:flex;min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:244px;background:var(--navy);color:#fff;padding:27px 17px 20px;display:flex;flex-direction:column;z-index:30}.brand{display:flex;align-items:center;gap:12px;padding:0 10px 30px}.brand strong{display:block;font-size:18px}.brand small{display:block;color:#9faabc;font-size:9px;letter-spacing:1.7px;margin-top:3px}.brand-mark{width:33px;height:33px;border:1px solid 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