:root{--ink:#142033;--muted:#718096;--line:#e8edf3;--paper:#fff;--canvas:#f5f7fa;--nav:#0b1220;--nav2:#182235;--brand:#ef5b2a;--brand-soft:#fff0e9;--green:#16856b;--blue:#2f6fed;--shadow:0 10px 30px rgba(18,34,54,.07);font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--canvas)}*{box-sizing:border-box}body{margin:0}.shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;background:linear-gradient(165deg,var(--nav),#111c2f);color:#fff;padding:24px 16px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:12px;padding:0 8px 24px;border-bottom:1px solid rgba(255,255,255,.08)}.brand-mark{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:var(--brand);font-weight:900;font-size:20px;box-shadow:0 8px 18px rgba(239,91,42,.3)}.brand strong,.brand small{display:block}.brand small{color:#8491a6;margin-top:4px;font-size:11px}.sidebar nav{margin-top:22px;display:grid;gap:5px}.nav-item{border:0;color:#95a0b3;background:transparent;padding:11px 13px;border-radius:10px;text-align:left;font-size:14px;cursor:pointer;display:flex;gap:11px;align-items:center}.nav-item:hover,.nav-item.active{color:#fff;background:rgba(255,255,255,.09)}.nav-item.active{box-shadow:inset 3px 0 var(--brand)}.nav-icon{width:20px;text-align:center}.sidebar-foot{margin-top:auto;font-size:12px;color:#8290a6;display:flex;gap:8px;align-items:center;padding:10px}.status-dot{width:7px;height:7px;background:#39c897;border-radius:50%;box-shadow:0 0 0 4px rgba(57,200,151,.12)}main{min-width:0}.topbar{height:84px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 30px;position:sticky;top:0;z-index:5}.topbar>div:first-child{display:flex;align-items:baseline;gap:14px}.topbar h1{font-size:20px;margin:0}.topbar 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