:root{--bg:#0b1017;--panel:#111923;--panel-2:#151f2b;--line:#263445;--text:#e7edf4;--muted:#93a2b4;--cyan:#62c8d2;--amber:#e4b66c;--red:#df8585;--green:#78ba98}*{box-sizing:border-box}body{margin:0;min-width:1180px;background:var(--bg);color:var(--text);font-family:Inter,PingFang SC,Microsoft YaHei,sans-serif}a{color:inherit;text-decoration:none}button,select{font:inherit}.shell{display:flex;min-height:100vh}.sidebar{width:244px;border-right:1px solid var(--line);padding:28px 16px;background:#0d141d}.brand{display:flex;gap:11px;align-items:center;margin:0 10px 34px;font-weight:700;letter-spacing:.4px}.brand-mark{width:29px;height:29px;border:1px solid var(--cyan);display:grid;place-items:center;color:var(--cyan);font-size:12px}.brand small{display:block;margin-top:3px;color:var(--muted);font-weight:500;font-size:10px;letter-spacing:1.4px}.nav-label{margin:21px 10px 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i{display:inline-block;width:8px;height:8px;background:var(--cyan);margin-right:5px}.kpi{display:flex;gap:12px}.kpi>div{flex:1 1;padding:12px;background:var(--panel-2);border-left:2px solid var(--cyan)}.kpi strong{font-size:20px;display:block;margin-top:5px}.empty{color:var(--muted);padding:24px 0;font-size:13px}