html[data-page=app]{--bg: #0c0c0c;--bg-alt: #242424;--border: #232323;--border-active: #454545;--accent: #5fa8ff;--text: #bcbcbc;--text-dim: #7a7a7a;--text-offctx: #8a8f98;--danger: #f66;--focus-ring: #007ACC;--input-bg: #0a0a0a;--btn-bg: #1a1a1a;--btn-border: #333;--btn-bg-hover: #222;--marked-bg: #103b2c;--font-ui: -apple-system, BlinkMacSystemFont, "Segoe WPC", "Segoe UI", system-ui, Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;--font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;--size-base: 14px;--topbar-h: 40px;--bottombar-h: 96px;--gutter: 16px;--gutter-l: 70px;--gutter-r: 10px;--message-gap: 70px;--assistant-gap: 5px;--message-padding: 30px;--meta-gap: 5px;--fade-zone: 40px;--fade-transition-ms: .12s;--history-bg: hsl(0, 0%, 7%);--font-w-normal: 200;--font-w-strong: 300}html[data-page=app],html[data-page=app] body{margin:0;padding:0;height:100%;overscroll-behavior:none}html[data-page=app] 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