:root{--bg:#fff;--field-bg:#e9ebee;--sidebar:#f2f4f6;--sidebar-border:#e5e8eb;--text:#1b1b1b;--text-sub:#5f666e;--text-mute:#9ba0a6;--line:#e5e8ea;--hover:#ededf0;--active:#e3f1fd;--accent:#00659a;--accent-soft:#dceaf3;--success:#199a59;--success-soft:#e7f3ea;--user-bubble:#f1f3f5;--source-bg:#fafafb;--danger:#d64545;--radius:14px;--shadow:0 1px 2px #1011140a,0 8px 24px #1011140f;--font:"Pretendard Variable","Pretendard",-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Segoe 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