:root{--bg: #f4f6fb;--card: #ffffff;--border: #e2e7f0;--text: #17203a;--muted: #61708b;--accent: #1f6feb;--accent-dark: #1a5fd0;--user-bubble: #1f6feb;--user-text: #ffffff;--error: #b3261e;--refused: #f6f8fc;--radius: 16px;--shadow: 0 6px 24px rgba(23, 32, 58, .07)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.page{height:100%;height:100dvh;display:flex;flex-direction:column;max-width:760px;margin:0 auto;padding:0 12px}.header{padding:16px 4px 12px}.header__title{margin:0;font-size:1.25rem;line-height:1.25;letter-spacing:-.01em}.header__subtitle{margin:6px 0 0;color:var(--muted);font-size:.875rem}.chat{flex:1 1 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