*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--bg-base:#f0f2f5;--bg-surface:#fff;--bg-elevated:#f4f6f8;--bg-hover:#eaecf0;--border:#dde2ea;--border-bright:#c8d0da;--accent:#ee742b;--accent-hover:#d9621a;--accent-dim:#fef3ec;--navy:#243347;--navy-light:#2e4060;--text-primary:#1c2b3a;--text-secondary:#4d6070;--text-muted:#8898a8;--user-bubble:#243347;--user-border:#1a2838;--assistant-bubble:#fff;--assistant-border:#dde2ea;--chunk-bg:#fff;--chunk-border:#e4e8ee;--chunk-hover:#f4f6f8;--score-high:#16a34a;--score-mid:#d97706;--score-low:#dc2626;--scrollbar-thumb:#c8d0da;--scrollbar-track:#f0f2f5}body,html{height:100%;background:var(--bg-base);color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--scrollbar-track)}::-webkit-scrollbar-thumb{background:var(--scrollbar-thumb);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--border-bright)}::selection{background:var(--accent-dim);color:var(--text-primary)}