:root{--ink:#e6edf3;--muted:#8b98a9;--line:#1f2a37;--brand:#3ddc97;--brand-dark:#2fbf80;--accent:#7c9cff;--assistant:#111a24;--surface:#0b1118;--background:#070b10;--mono:"JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace}*{box-sizing:border-box}html,body{height:100%;margin:0}body{background:var(--background);color:var(--ink);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,textarea{font:inherit}.embed-page{height:100%;padding:0}.chat-shell{background:var(--surface);grid-template-rows:auto 1fr auto;width:100%;height:100%;min-height:460px;display:grid;overflow:hidden}.standalone-page{background:radial-gradient(circle at 20% 10%, #3ddc971a, transparent 40%), radial-gradient(circle at 80% 90%, #7c9cff1a, transparent 40%), var(--background);place-items:center;min-height:100%;padding:32px;display:grid}.standalone-frame{border:1px solid var(--line);border-radius:18px;width:min(420px,100%);height:min(720px,100vh - 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