:root{--color-primary:#0891b2;--color-secondary:#30628c;--color-text:#1a2a3a;--color-background:#f4f7fa;--color-surface:#fff;--color-border:#d4e2ee;--color-muted:#64748b;--color-success:#10b981;--color-warning:#f59e0b;--color-danger:#ef4444;--shadow-sm:0 1px 3px rgba(8,145,178,.08);--shadow-md:0 4px 12px rgba(8,145,178,.12);--shadow-lg:0 8px 24px rgba(8,145,178,.16);--sidebar-width:260px;--sidebar-collapsed-width:68px;--header-height:64px;--radius-sm:6px;--radius-md:10px;--radius-lg:14px}@layer theme, base, components, utilities;*{box-sizing:border-box}body{background-color:var(--color-background);color:var(--color-text);-webkit-font-smoothing:antialiased}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--color-secondary)}.app-shell{height:100vh}.app-main-column,.app-shell{display:flex;overflow:hidden}.app-main-column{flex:1 1;min-width:0;flex-direction:column}.content-area{flex:1 1;min-height:0;overflow-y:auto;overflow-x:hidden}.header-shell{flex-shrink:0;padding-left:24px;padding-right:24px}.simplebar-scrollbar:before{background-color:var(--palette-text-disabled)}.simplebar-scrollbar.simplebar-visible:before{opacity:.48}