:root{--color-bg:#fff;--color-bg-alt:#f6f5f4;--color-brand:#0075de;--color-brand-active:#005bab;--color-text:#000000f2;--color-text-secondary:#615d59;--color-text-muted:#a39e98;--color-border:#0000001a;--color-success:#1aae39;--color-error:#e64340;--color-user-bubble:#0075de;--color-ai-bubble:#fff;--color-badge-bg:#f2f9ff;--color-badge-text:#097fe8;--color-sidebar:#000000f2;--color-sidebar-text:#fff;--color-sidebar-active:#ffffff14;--color-bg-mask:#0006;--font-sans:"Inter", -apple-system, system-ui, "Segoe UI", Helvetica, sans-serif;--font-mono:ui-monospace, Consolas, monospace;--shadow-sm:#00000003 0px .2px 1px;--shadow-md:#00000005 0px .8px 3px;--shadow-lg:#00000007 0px 2px 8px;--shadow-xl:#0000000a 0px 4px 18px;--shadow-card:var(--shadow-sm), var(--shadow-md), var(--shadow-lg), var(--shadow-xl);--shadow-modal:#00000014 0px 4px 24px, #0000000d 0px 2px 12px, #00000008 0px .8px 4px;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--radius-pill:9999px;--sidebar-width:300px;--max-width:1200px;--transition-fast:.15s ease;--transition-base:.2s ease;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*,:before,:after{box-sizing:border-box}body{font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg-alt);margin:0;font-size:16px;line-height:1.5}#app{width:100%;min-height:100vh}