> ## Documentation Index
> Fetch the complete documentation index at: https://hyperframes-feat-ad94-tune-scroll-cue.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# ChatGPT Exchange

> A portrait ChatGPT-style exchange types and sends a prompt, streams an answer, assembles a comparison table, and scrolls back through the result

export const InstallCommand = ({command, item}) => {
  const [copied, setCopied] = React.useState(false);
  const [tuned, setTuned] = React.useState("");
  React.useEffect(() => {
    if (!item) return;
    const read = () => {
      try {
        const raw = new URLSearchParams(window.location.search).get(`vars-${item}`);
        if (!raw) return setTuned("");
        const parsed = JSON.parse(raw);
        if (!parsed || typeof parsed !== "object" || Array.isArray(parsed)) return setTuned("");
        if (Object.keys(parsed).length === 0) return setTuned("");
        setTuned(` --vars '${JSON.stringify(parsed)}'`);
      } catch {
        setTuned("");
      }
    };
    read();
    window.addEventListener("hf-vars-changed", read);
    window.addEventListener("popstate", read);
    return () => {
      window.removeEventListener("hf-vars-changed", read);
      window.removeEventListener("popstate", read);
    };
  }, [item]);
  const fullCommand = `${command}${tuned}`;
  const copy = async () => {
    try {
      if (navigator.clipboard && window.isSecureContext) {
        await navigator.clipboard.writeText(fullCommand);
      } else {
        const previous = document.activeElement;
        const scratch = document.createElement("textarea");
        scratch.value = fullCommand;
        scratch.setAttribute("readonly", "");
        scratch.style.position = "fixed";
        scratch.style.opacity = "0";
        document.body.appendChild(scratch);
        scratch.select();
        document.execCommand("copy");
        document.body.removeChild(scratch);
        previous?.focus?.();
      }
      setCopied(true);
      setTimeout(() => setCopied(false), 2000);
    } catch {}
  };
  return <div className="hf-install-command not-prose my-4 flex items-stretch overflow-hidden rounded-xl border border-zinc-200 bg-zinc-50 dark:border-zinc-800 dark:bg-zinc-900">
      <code className="flex-1 overflow-x-auto whitespace-nowrap border-r border-zinc-200 px-4 py-3 font-mono text-sm text-zinc-800 dark:border-zinc-800 dark:text-zinc-100">
        {fullCommand}
      </code>
      <button type="button" onClick={copy} data-copied={copied ? "true" : "false"} aria-label={`Copy ${command} to the clipboard`} className="hf-install-copy">
        <svg className="hf-install-copy-clipboard" xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 18 18" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
          <path d="M14.25 5.25H7.25C6.14543 5.25 5.25 6.14543 5.25 7.25V14.25C5.25 15.3546 6.14543 16.25 7.25 16.25H14.25C15.3546 16.25 16.25 15.3546 16.25 14.25V7.25C16.25 6.14543 15.3546 5.25 14.25 5.25Z" />
          <path d="M2.80103 11.998L1.77203 5.07397C1.61003 3.98097 2.36403 2.96397 3.45603 2.80197L10.38 1.77297C11.313 1.63397 12.19 2.16297 12.528 3.00097" />
        </svg>
        <svg className="hf-install-copy-check" xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 18 18" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
          <path d="M2.75 9.5L6.5 13.25L15.25 4.5" />
        </svg>
      </button>
      <span className="hf-install-copy-status" role="status" aria-live="polite">
        {copied ? "Copied" : ""}
      </span>
    </div>;
};

export const CatalogSlot = ({slot, children}) => <div data-slot={slot} className="prose prose-gray dark:prose-invert">
    {children}
  </div>;

export const CatalogDetail = ({previewSrc, compositionId, compositionSrc, variables = [], title, description, meta = {}, about, attribution, rawUrl, video, poster, webgpu, needsFlag, hasCode, children}) => {
  const SHIKI = {
    punct: {
      color: "rgb(31, 35, 40)",
      "--shiki-dark": "#808080"
    },
    tag: {
      color: "rgb(17, 99, 41)",
      "--shiki-dark": "#569CD6"
    },
    attr: {
      color: "rgb(5, 80, 174)",
      "--shiki-dark": "#9CDCFE"
    },
    equals: {
      color: "rgb(31, 35, 40)",
      "--shiki-dark": "#D4D4D4"
    },
    value: {
      color: "rgb(10, 48, 105)",
      "--shiki-dark": "#CE9178"
    }
  };
  const CSS = `
.hf-ve {
  --ve-fg: #18181b;
  --ve-muted: #71717a;
  --ve-line: #e4e4e7;
  --ve-surface: #ffffff;
  --ve-sunken: #fafafa;
  --ve-hover: #f4f4f5;
  --ve-on-bg: #18181b;
  --ve-on-fg: #ffffff;
  --ve-ring: rgba(24, 24, 27, 0.14);
  --ve-danger: #b42318;
}
:where(html.dark) .hf-ve {
  --ve-fg: #f4f4f5;
  --ve-muted: #a1a1aa;
  --ve-line: #27272a;
  --ve-surface: #18181b;
  --ve-sunken: #131316;
  --ve-hover: #27272a;
  --ve-on-bg: #f4f4f5;
  --ve-on-fg: #18181b;
  --ve-ring: rgba(244, 244, 245, 0.2);
  --ve-danger: #ff9d95;
}

.hf-ve-tabs {
  display: inline-flex;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--ve-line);
  border-radius: 9999px;
  background: var(--ve-sunken);
}
.hf-ve-tab {
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 500;
  color: var(--ve-muted);
  background: transparent;
}
.hf-ve-tab[data-on="true"] {
  color: var(--ve-fg);
  background: var(--ve-hover);
}
.hf-ve-tab:focus:not(:focus-visible) { outline: none; box-shadow: none; }
.hf-ve-tab:hover:not([data-on="true"]) { color: var(--ve-fg); }

/* Not a grid. A grid row is as tall as its tallest cell, so a five-line snippet
   sat in the preview's 16:9 box with 300px of dead area under it. The inactive
   pane is taken out of flow instead — and stretches left/right rather than to
   inset 0, so the iframe keeps its own height. An iframe resized on every tab
   switch reflows the composition running inside it. */
.hf-ve-frame { position: relative; }
.hf-ve-cell { min-width: 0; }
.hf-ve-cell[data-on="false"] {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  visibility: hidden;
  pointer-events: none;
}
.hf-ve-preview {
  overflow: hidden;
  border: 1px solid var(--ve-line);
  border-radius: 12px;
}
/* CodeBlock carries the page margins (mt-5 mb-8) that separate it from prose,
   which is dead space inside a tab. Element plus two classes out-specifies a
   Tailwind utility without !important. */
.hf-ve-cell > div.code-block { margin: 0; }
/* The snippet wraps; the source does not.
   A value the reader has to read in full should not hide half of itself off the
   right edge, so the snippet pane wraps — what \`\`\`html wrap does for a fence.
   The width reset is the half that matters: the block's own <code> is sized to
   max-content, and content that never meets an edge never wraps.
   Source is left to scroll sideways like every other code block on the site.
   Wrapping it breaks its indentation, and a comment paragraph re-flowed to a
   narrow column reads worse than one the reader can scroll. */
.hf-ve-snippet .shiki,
.hf-ve-snippet .shiki code {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
/* A composition source runs to several hundred lines, and an un-capped tab
   pushes the Customize panel off the screen. The cap goes on the scroll box
   rather than the block, so the filename and its copy button stay put; and it
   is a max-height, so a short source still hugs its own content and the dead
   area under it stays gone. */
.hf-ve-cell .code-block pre {
  max-height: 460px;
  overflow: auto;
}
/* Four classes deep because the rule being answered is three
   (\`html:not(.dark) .codeblock-light pre.shiki code\`), and a shorter selector
   silently loses to it. */
.hf-ve .hf-ve-snippet .code-block pre.shiki code {
  width: auto;
  min-width: 0;
}

.hf-ve-panel {
  margin-top: 12px;
  border: 1px solid var(--ve-line);
  border-radius: 12px;
}
.hf-ve-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  border-bottom: 1px solid var(--ve-line);
}
.hf-ve-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ve-muted);
}
.hf-ve-grid {
  display: grid;
  gap: 16px 28px;
  padding: 16px;
}
@media (min-width: 640px) {
  .hf-ve-grid { grid-template-columns: 1fr 1fr; }
}
.hf-ve-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
}
.hf-ve-label { font-size: 14px; font-weight: 500; color: var(--ve-fg); }
.hf-ve-value {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--ve-muted);
}
.hf-ve-desc {
  margin: 6px 0 0;
  font-size: 12px;
  line-height: 1.45;
  color: var(--ve-muted);
}

.hf-ve-btn {
  padding: 4px 10px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 500;
  color: var(--ve-muted);
  background: transparent;
}
.hf-ve-btn:hover:not(:disabled) { color: var(--ve-fg); background: var(--ve-hover); }
.hf-ve-btn:disabled { opacity: 0.4; cursor: default; }

.hf-ve-field {
  width: 100%;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--ve-line);
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--ve-fg);
  background: var(--ve-surface);
}
.hf-ve-field::placeholder { color: var(--ve-muted); }
.hf-ve-mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }

/* Focus, once, for every control here. A ring outside the border rather than a
   border colour alone: the border already carries the resting state, so
   recolouring it is a change a reader can miss. Nothing shifts, because the
   ring is a shadow. :focus-visible, so a pointer click does not light it up. */
.hf-ve-field:focus-visible,
.hf-ve-seg-btn:focus-visible,
.hf-ve-tab:focus-visible,
.hf-ve-btn:focus-visible,
.hf-ve-switch:focus-visible,
.hf-ve-swatch:focus-visible {
  outline: none;
  border-color: var(--ve-on-bg);
  box-shadow: 0 0 0 3px var(--ve-ring);
}
/* A range is a track, and ringing the track rings a pill the width of the
   panel. The thumb is the part that has focus, so the thumb is what says so. */
.hf-ve-range:focus-visible { outline: none; }
.hf-ve-range:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 4px var(--ve-ring); }
.hf-ve-range:focus-visible::-moz-range-thumb { box-shadow: 0 0 0 4px var(--ve-ring); }
/* Safari still fires :focus for a click on a button, so the pair is kept. */
.hf-ve-field:focus { outline: none; border-color: var(--ve-on-bg); }

/* The enum branch above sends anything past four options here. No shipped item
   does today (every enum in the registry has two to four), so this is styled to
   the point of not looking foreign and no further — the chevron is one neutral
   grey rather than a per-theme pair, because a data URI cannot read a token. */
.hf-ve-select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 34px;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%2389898f' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m4 6 4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  cursor: pointer;
}

.hf-ve-seg {
  display: flex;
  padding: 2px;
  border: 1px solid var(--ve-line);
  border-radius: 8px;
}
.hf-ve-seg-btn {
  flex: 1;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--ve-muted);
  background: transparent;
}
.hf-ve-seg-btn:hover:not([data-on="true"]) { color: var(--ve-fg); background: var(--ve-hover); }
.hf-ve-seg-btn[data-on="true"] { color: var(--ve-on-fg); background: var(--ve-on-bg); }

/* A range, rebuilt. \`accent-color\` alone leaves the platform's hairline track,
   which reads as an unstyled browser part next to everything else here. Each
   engine names its parts differently and shares none of them, so the same
   track and thumb are written twice; a selector either engine cannot parse
   drops the whole rule, which is why they are never grouped. */
.hf-ve-range {
  width: 100%;
  height: 20px;
  appearance: none;
  -webkit-appearance: none;
  border: 0;
  border-radius: 9999px;
  background: transparent;
  cursor: pointer;
}
/* --ve-fill is set per render: painting progress on a native track means a
   two-stop gradient, and only the component knows where the value sits. */
.hf-ve-range::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 9999px;
  background: linear-gradient(
    to right,
    var(--ve-on-bg) var(--ve-fill, 0%),
    var(--ve-line) var(--ve-fill, 0%)
  );
}
.hf-ve-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  margin-top: -5px;
  border: 2px solid var(--ve-on-bg);
  border-radius: 9999px;
  background: var(--ve-surface);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.14);
}
.hf-ve-range::-moz-range-track { height: 6px; border-radius: 9999px; background: var(--ve-line); }
.hf-ve-range::-moz-range-progress { height: 6px; border-radius: 9999px; background: var(--ve-on-bg); }
.hf-ve-range::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border: 2px solid var(--ve-on-bg);
  border-radius: 9999px;
  background: var(--ve-surface);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.14);
}
/* Hover reads on the part being aimed at rather than on the whole strip: a
   track that darkens under the pointer says "click me and the thumb comes
   here", which is what a native range actually does. */
.hf-ve-range:hover::-webkit-slider-thumb { border-color: var(--ve-fg); }
.hf-ve-range:hover::-moz-range-thumb { border-color: var(--ve-fg); }

/* The number control, and the three things it used to leave unsaid.
 *
 * It could not say where the range ends, so a reader dragging \`stroke_width\`
 * had no idea whether 12 was nearly nothing or nearly everything: the ends now
 * carry min and max.
 *
 * It could not say where the author left the knob, which is the one reference
 * point a panel built around deviating from the author's choice needs: a mark
 * on the track is the default, and a double click puts the value back on it.
 *
 * And it printed the value in the label row, a fixed distance from a thumb that
 * moves, so reading a drag meant looking in two places at once. The value rides
 * the thumb instead.
 *
 * Still a real <input type="range">. Every custom slider on the web reimplements
 * keyboard stepping, touch, and the screen-reader contract, and most of them do
 * one of the three badly; none of what is added here needed the element
 * replaced. Nothing moves that a finger is not moving: the value tracks the
 * pointer because it is the pointer's own readout, and the only transition is
 * the colour one every other control here shares. */
.hf-ve-slider {
  display: grid;
  gap: 1px;
}
.hf-ve-ruler {
  position: relative;
  height: 17px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  line-height: 17px;
  color: var(--ve-muted);
}
.hf-ve-bound {
  position: absolute;
  top: 0;
}
.hf-ve-bound[data-end="min"] { left: 0; }
.hf-ve-bound[data-end="max"] { right: 0; }
/* An end steps aside rather than being overprinted by the value arriving on
   top of it. Visibility, not opacity: there is no fade here, the label is
   either the thing being read or it is out of the way. */
.hf-ve-ruler[data-near="min"] .hf-ve-bound[data-end="min"],
.hf-ve-ruler[data-near="max"] .hf-ve-bound[data-end="max"] {
  visibility: hidden;
}
/* translateX is centring, not motion: the readout is as wide as its own digits
   and has to hang half of that either side of the thumb. */
.hf-ve-readout {
  position: absolute;
  top: 0;
  left: calc(var(--ve-fill, 0%) + var(--ve-fill-nudge, 0px));
  transform: translateX(-50%);
  color: var(--ve-fg);
  font-weight: 600;
  white-space: nowrap;
}
.hf-ve-track {
  position: relative;
  display: block;
}
.hf-ve-range { display: block; }
.hf-ve-default {
  position: absolute;
  top: 5px;
  left: calc(var(--ve-default, 50%) + var(--ve-default-nudge, 0px));
  width: 2px;
  height: 10px;
  margin-left: -1px;
  border-radius: 1px;
  background: var(--ve-muted);
  pointer-events: none;
}

/* A switch, for the boolean type. It used to fall through to the text input at
   the end of control(), which asked the reader to type the word "true". */
.hf-ve-switch {
  display: inline-flex;
  align-items: center;
  width: 40px;
  height: 24px;
  padding: 2px;
  border: 1px solid var(--ve-line);
  border-radius: 9999px;
  background: var(--ve-sunken);
  cursor: pointer;
}
.hf-ve-switch[data-on="true"] { border-color: var(--ve-on-bg); background: var(--ve-on-bg); }
.hf-ve-switch-dot {
  width: 18px;
  height: 18px;
  border-radius: 9999px;
  background: var(--ve-surface);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.18);
}
.hf-ve-switch[data-on="true"] .hf-ve-switch-dot {
  background: var(--ve-on-fg);
  transform: translateX(16px);
}

/* The SVG import control: the same text field, with a way to fill it.
 *
 * The whole block is the drop target, not just the field, so a file let go over
 * the button lands too. It says so by taking the same border colour a focused
 * field takes, which is the one feedback channel this panel has left.
 *
 * A bare <input type="file"> is unlabelled, unstyleable and reads as "No file
 * chosen" next to controls that carry their own value, so the real input is
 * taken out of the layout and the tab order and a button in front of it is what
 * a reader sees and what a keyboard reaches. Hidden with size and opacity
 * rather than display:none, because an input that is not rendered at all is one
 * some browsers decline to open a picker for. */
.hf-ve-drop {
  display: grid;
  gap: 8px;
}
.hf-ve-drop[data-over="true"] .hf-ve-dropzone {
  border-color: var(--ve-on-bg);
  border-style: solid;
}

/* The import is the action almost everyone wants: a reader arrives with a
   shape, not with path data. A dashed target reads as "put a file here" on
   sight, where a button beneath a field of coordinates read as an afterthought
   to the coordinates. */
.hf-ve-dropzone {
  display: grid;
  justify-items: center;
  gap: 6px;
  padding: 18px 12px;
  border: 1px dashed var(--ve-line);
  border-radius: 10px;
  background: var(--ve-surface);
  text-align: center;
}
.hf-ve-dropzone .hf-ve-btn {
  padding: 7px 16px;
  font-size: 13px;
  color: var(--ve-fg);
  border-color: var(--ve-line);
  background: var(--ve-bg);
}
.hf-ve-dropzone .hf-ve-btn:hover:not(:disabled) { background: var(--ve-hover); }

/* Path data stays reachable, but a reader has to ask for it. A native details
   element rather than our own toggle, so it opens with the keyboard and is
   announced as expandable without any wiring. */
.hf-ve-advanced > summary {
  font-size: 12px;
  color: var(--ve-muted);
  cursor: pointer;
  list-style: none;
  padding: 2px 0;
}
.hf-ve-advanced > summary::-webkit-details-marker { display: none; }
.hf-ve-advanced > summary::before { content: "▸ "; }
.hf-ve-advanced[open] > summary::before { content: "▾ "; }
.hf-ve-advanced > summary:hover { color: var(--ve-fg); }
.hf-ve-advanced .hf-ve-field { margin-top: 6px; }
.hf-ve-file {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.hf-ve-note {
  margin: 0;
  min-width: 0;
  font-size: 12px;
  line-height: 1.4;
  color: var(--ve-muted);
}
.hf-ve-note[data-tone="error"] { color: var(--ve-danger); }
.hf-ve-note[data-tone="ok"] { color: var(--ve-fg); }

.hf-ve-swatch {
  width: 40px;
  height: 32px;
  flex-shrink: 0;
  padding: 2px;
  border: 1px solid var(--ve-line);
  border-radius: 8px;
  background: var(--ve-surface);
  cursor: pointer;
}

/* Nothing here moves.
 *
 * A press-down scale on every button and field, a scale-in on the tab panes, a
 * springing switch knob and a growing slider thumb were all flourish: the
 * control had already told you what it did by changing colour, and the motion
 * was a second, slower answer to a question already settled. What is left is
 * one colour transition, short enough to read as immediate and long enough not
 * to flicker. A control here may change colour; it does not move.
 *
 * Which is also why there is no prefers-reduced-motion block any more. There is
 * no motion left to reduce. */
.hf-ve-tint {
  transition:
    background-color 100ms ease,
    border-color 100ms ease,
    color 100ms ease;
}

.hf-ve-head-title { margin: 8px 0 28px; }
.hf-ve-head-title h1 { margin: 0; font-size: 44px; line-height: 1.1; font-weight: 700; letter-spacing: -0.02em; color: var(--ve-fg); }
.hf-ve-head-title p { margin: 12px 0 0; font-size: 18px; line-height: 1.5; color: var(--ve-muted); max-width: 70ch; }
@media (max-width: 640px) { .hf-ve-head-title h1 { font-size: 32px; } }
/* Item page anatomy: bar, stage beside Tune, tabs, tab body. */
.hf-ve-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
  margin-bottom: 16px;
}
.hf-ve-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 18px;
  font-size: 14px;
  color: var(--ve-muted);
}
.hf-ve-meta b { color: var(--ve-fg); font-weight: 600; }
.hf-ve-badge {
  padding: 2px 10px;
  border-radius: 9999px;
  font-size: 12px;
  background: var(--ve-hover);
}
.hf-ve-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.hf-ve-action {
  display: inline-grid;
  align-items: center;
  justify-items: center;
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ve-fg);
  background: var(--ve-hover);
  text-decoration: none;
  border: 0;
  cursor: pointer;
}
.hf-ve-action-label { grid-area: 1 / 1; }
.hf-ve-action-label[data-shown="false"] { visibility: hidden; }
.hf-ve-action:hover:not(:disabled) { background: var(--ve-line); }
.hf-ve-action:disabled { opacity: 0.4; cursor: default; }
.hf-ve-tune-foot .hf-ve-action { justify-content: center; white-space: nowrap; }
.hf-ve-action[data-primary="true"] { color: var(--ve-on-fg); background: var(--ve-on-bg); }
.hf-ve-action[data-primary="true"]:hover:not(:disabled) { background: var(--ve-on-bg); opacity: 0.88; }
.hf-ve-main { display: grid; gap: 16px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 1024px) {
  .hf-ve-main[data-tune="true"] { grid-template-columns: minmax(0, 1fr) 340px; }
}
.hf-ve-stage {
  overflow: hidden;
  border: 1px solid var(--ve-line);
  border-radius: 14px;
  background: var(--ve-surface);
}
.hf-ve-stage .hf-ve-preview { border: 0; border-radius: 0; }
.hf-ve-caption { padding: 10px 16px; font-size: 13px; color: var(--ve-muted); }
.hf-ve-caption span + span { margin-left: 16px; }
.hf-ve-tune {
  position: relative;
  min-height: 320px;
  border: 1px solid var(--ve-line);
  border-radius: 14px;
  background: var(--ve-surface);
}
.hf-ve-tune-inner { display: flex; flex-direction: column; max-height: 520px; }
@media (min-width: 1024px) {
  .hf-ve-tune-inner { position: absolute; inset: 0; max-height: none; }
}
.hf-ve-tune-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--ve-line);
  font-weight: 600;
}
.hf-ve-tune-head small { font-weight: 400; font-size: 13px; color: var(--ve-muted); }
.hf-ve-tune-list-wrap { position: relative; flex: 1; min-height: 0; display: flex; }
.hf-ve-tune-list {
  flex: 1;
  min-height: 0;
  overflow: auto;
  overscroll-behavior: contain;
  display: grid;
  gap: 16px;
  padding: 16px;
  align-content: start;
  mask-image: linear-gradient(to bottom, transparent 0, #000 12px, #000 calc(100% - 12px), transparent 100%);
}
.hf-ve-tune-more {
  position: absolute;
  left: 50%;
  bottom: 6px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 9999px;
  background: var(--ve-hover);
  color: var(--ve-muted);
  pointer-events: none;
  animation: hf-ve-tune-more-pulse 1.6s ease-in-out infinite;
}
@keyframes hf-ve-tune-more-pulse {
  0%, 100% { opacity: 1; transform: translateX(-50%) scale(1); }
  50% { opacity: 0.55; transform: translateX(-50%) scale(1.15); }
}
@media (prefers-reduced-motion: reduce) {
  .hf-ve-tune-more { animation: none; }
}
.hf-ve-tune-foot {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 8px;
  padding: 16px;
  border-top: 1px solid var(--ve-line);
}
.hf-ve-tabs-row { margin: 20px 0 0 16px; }
.hf-ve-tabs-row .hf-ve-tab { padding: 6px 16px; font-size: 14px; }
.hf-ve-tabs-row .hf-ve-tab small { margin-left: 6px; font-weight: 400; opacity: 0.7; }
.hf-ve-body { padding: 2rem 0 0 16px; }
.hf-ve-install { margin: 0 0 28px; }
.hf-ve-install-title { margin: 0 0 12px; font-size: 24px; line-height: 1.3; font-weight: 600; letter-spacing: -0.01em; color: var(--ve-fg); }
.hf-ve-about h3 { margin: 0 0 8px; font-size: 16px; font-weight: 600; }
.hf-ve-about p { margin: 0 0 12px; line-height: 1.6; max-width: 72ch; }
.hf-ve-about .hf-ve-attr { font-size: 14px; color: var(--ve-muted); }
.hf-ve-about .hf-ve-attr a { color: var(--ve-fg); text-decoration: underline; }
.hf-ve-body-pane[hidden] { display: none; }
.hf-ve-slots > [data-slot] { display: none; }
.hf-ve-slots[data-tab="code"] > [data-slot="code"],
.hf-ve-slots[data-tab="docs"] > [data-slot="docs"] { display: block; }
.hf-ve-body-pane .code-block pre,
.hf-ve-slots [data-slot="code"] pre { max-height: 560px; overflow: auto; }
@media (max-width: 640px) {
  .hf-ve-actions { width: 100%; }
  .hf-ve-action { flex: 1 1 calc(50% - 8px); justify-content: center; }
}

`;
  const isSvgPathData = value => typeof value === "string" && (/^\s*[Mm]\s*-?[\d.]/).test(value);
  const parsePathData = d => {
    const source = String(d);
    const arity = {
      M: 2,
      L: 2,
      H: 1,
      V: 1,
      C: 6,
      S: 4,
      Q: 4,
      T: 2,
      A: 7,
      Z: 0
    };
    const commands = [];
    let at = 0;
    let code = "";
    const separator = () => {
      while (at < source.length && (/[\s,]/).test(source[at])) at += 1;
    };
    const digits = () => {
      while (at < source.length && source[at] >= "0" && source[at] <= "9") at += 1;
    };
    const number = () => {
      separator();
      const start = at;
      if (source[at] === "+" || source[at] === "-") at += 1;
      digits();
      if (source[at] === ".") {
        at += 1;
        digits();
      }
      if (source[at] === "e" || source[at] === "E") {
        at += 1;
        if (source[at] === "+" || source[at] === "-") at += 1;
        digits();
      }
      const text = source.slice(start, at);
      const value = Number(text);
      if (text === "" || !Number.isFinite(value)) {
        throw new Error(`expected a number at character ${start + 1}`);
      }
      return value;
    };
    const flag = () => {
      separator();
      const character = source[at];
      if (character !== "0" && character !== "1") {
        throw new Error(`expected an arc flag at character ${at + 1}`);
      }
      at += 1;
      return Number(character);
    };
    separator();
    while (at < source.length) {
      const character = source[at];
      if ((/[a-zA-Z]/).test(character)) {
        if (arity[character.toUpperCase()] === undefined) {
          throw new Error(`unknown command "${character}"`);
        }
        code = character;
        at += 1;
      } else if (code === "") {
        throw new Error("path data must open with a command");
      } else if (code === "M" || code === "m") {
        code = code === "M" ? "L" : "l";
      } else if (code === "Z" || code === "z") {
        throw new Error(`expected a command at character ${at + 1}`);
      }
      const letter = code.toUpperCase();
      const args = [];
      if (letter === "A") {
        args.push(number(), number(), number(), flag(), flag(), number(), number());
      } else {
        for (let taken = 0; taken < arity[letter]; taken += 1) args.push(number());
      }
      commands.push({
        code,
        args
      });
      separator();
    }
    if (commands.length === 0) throw new Error("path data is empty");
    return commands;
  };
  const normalisePathData = commands => {
    const out = [];
    let x = 0;
    let y = 0;
    let startX = 0;
    let startY = 0;
    let cubicControl = null;
    let quadraticControl = null;
    for (const {code, args} of commands) {
      const letter = code.toUpperCase();
      const relative = code !== letter;
      const dx = relative ? x : 0;
      const dy = relative ? y : 0;
      const pairs = values => {
        const mapped = [];
        for (let index = 0; index + 1 < values.length; index += 2) {
          mapped.push(values[index] + dx, values[index + 1] + dy);
        }
        return mapped;
      };
      let nextCubic = null;
      let nextQuadratic = null;
      if (letter === "M") {
        const [px, py] = pairs(args);
        out.push({
          code: "M",
          args: [px, py]
        });
        x = px;
        y = py;
        startX = px;
        startY = py;
      } else if (letter === "L") {
        const [px, py] = pairs(args);
        out.push({
          code: "L",
          args: [px, py]
        });
        x = px;
        y = py;
      } else if (letter === "H") {
        x = args[0] + dx;
        out.push({
          code: "L",
          args: [x, y]
        });
      } else if (letter === "V") {
        y = args[0] + dy;
        out.push({
          code: "L",
          args: [x, y]
        });
      } else if (letter === "C") {
        const points = pairs(args);
        out.push({
          code: "C",
          args: points
        });
        nextCubic = [points[2], points[3]];
        x = points[4];
        y = points[5];
      } else if (letter === "S") {
        const points = pairs(args);
        const first = cubicControl ? [2 * x - cubicControl[0], 2 * y - cubicControl[1]] : [x, y];
        out.push({
          code: "C",
          args: [...first, ...points]
        });
        nextCubic = [points[0], points[1]];
        x = points[2];
        y = points[3];
      } else if (letter === "Q") {
        const points = pairs(args);
        out.push({
          code: "Q",
          args: points
        });
        nextQuadratic = [points[0], points[1]];
        x = points[2];
        y = points[3];
      } else if (letter === "T") {
        const points = pairs(args);
        const control = quadraticControl ? [2 * x - quadraticControl[0], 2 * y - quadraticControl[1]] : [x, y];
        out.push({
          code: "Q",
          args: [...control, ...points]
        });
        nextQuadratic = control;
        x = points[0];
        y = points[1];
      } else if (letter === "A") {
        const endX = args[5] + dx;
        const endY = args[6] + dy;
        out.push(...arcToCubics(x, y, args[0], args[1], args[2], args[3], args[4], endX, endY));
        x = endX;
        y = endY;
      } else if (letter === "Z") {
        out.push({
          code: "Z",
          args: []
        });
        x = startX;
        y = startY;
      }
      cubicControl = nextCubic;
      quadraticControl = nextQuadratic;
    }
    return out;
  };
  const arcToCubics = (x1, y1, rx, ry, rotation, largeArc, sweep, x2, y2) => {
    if (x1 === x2 && y1 === y2) return [];
    let radiusX = Math.abs(rx);
    let radiusY = Math.abs(ry);
    if (radiusX === 0 || radiusY === 0) return [{
      code: "L",
      args: [x2, y2]
    }];
    const phi = rotation * Math.PI / 180;
    const cosPhi = Math.cos(phi);
    const sinPhi = Math.sin(phi);
    const midX = (x1 - x2) / 2;
    const midY = (y1 - y2) / 2;
    const primeX = cosPhi * midX + sinPhi * midY;
    const primeY = -sinPhi * midX + cosPhi * midY;
    const oversize = primeX * primeX / (radiusX * radiusX) + primeY * primeY / (radiusY * radiusY);
    if (oversize > 1) {
      const grow = Math.sqrt(oversize);
      radiusX *= grow;
      radiusY *= grow;
    }
    const denominator = radiusX * radiusX * primeY * primeY + radiusY * radiusY * primeX * primeX;
    const numerator = radiusX * radiusX * radiusY * radiusY - radiusX * radiusX * primeY * primeY - radiusY * radiusY * primeX * primeX;
    const factor = (largeArc === sweep ? -1 : 1) * Math.sqrt(Math.max(0, numerator) / denominator);
    const centrePrimeX = factor * radiusX * primeY / radiusY;
    const centrePrimeY = -factor * radiusY * primeX / radiusX;
    const centreX = cosPhi * centrePrimeX - sinPhi * centrePrimeY + (x1 + x2) / 2;
    const centreY = sinPhi * centrePrimeX + cosPhi * centrePrimeY + (y1 + y2) / 2;
    const angle = (ux, uy, vx, vy) => {
      const length = Math.hypot(ux, uy) * Math.hypot(vx, vy);
      const cosine = length === 0 ? 1 : Math.min(1, Math.max(-1, (ux * vx + uy * vy) / length));
      return (ux * vy - uy * vx < 0 ? -1 : 1) * Math.acos(cosine);
    };
    const fromX = (primeX - centrePrimeX) / radiusX;
    const fromY = (primeY - centrePrimeY) / radiusY;
    const toX = (-primeX - centrePrimeX) / radiusX;
    const toY = (-primeY - centrePrimeY) / radiusY;
    const start = angle(1, 0, fromX, fromY);
    let sweptAngle = angle(fromX, fromY, toX, toY);
    if (!sweep && sweptAngle > 0) sweptAngle -= 2 * Math.PI;
    if (sweep && sweptAngle < 0) sweptAngle += 2 * Math.PI;
    const steps = Math.max(1, Math.ceil(Math.abs(sweptAngle) / (Math.PI / 2)));
    const step = sweptAngle / steps;
    const handle = 4 / 3 * Math.tan(step / 4);
    const at = t => [centreX + radiusX * Math.cos(t) * cosPhi - radiusY * Math.sin(t) * sinPhi, centreY + radiusX * Math.cos(t) * sinPhi + radiusY * Math.sin(t) * cosPhi];
    const slope = t => [-radiusX * Math.sin(t) * cosPhi - radiusY * Math.cos(t) * sinPhi, -radiusX * Math.sin(t) * sinPhi + radiusY * Math.cos(t) * cosPhi];
    const out = [];
    for (let index = 0; index < steps; index += 1) {
      const from = start + index * step;
      const to = from + step;
      const [ax, ay] = at(from);
      const [bx, by] = at(to);
      const [aSlopeX, aSlopeY] = slope(from);
      const [bSlopeX, bSlopeY] = slope(to);
      out.push({
        code: "C",
        args: [ax + handle * aSlopeX, ay + handle * aSlopeY, bx - handle * bSlopeX, by - handle * bSlopeY, bx, by]
      });
    }
    const last = out[out.length - 1];
    last.args[4] = x2;
    last.args[5] = y2;
    return out;
  };
  const transformPathData = (segments, matrix) => segments.map(({code, args}) => {
    const moved = [];
    for (let index = 0; index + 1 < args.length; index += 2) {
      const x = args[index];
      const y = args[index + 1];
      moved.push(matrix.a * x + matrix.c * y + matrix.e, matrix.b * x + matrix.d * y + matrix.f);
    }
    return {
      code,
      args: moved
    };
  });
  const fitMatrix = (source, target) => {
    const chosen = Math.min(target.width / source.width, target.height / source.height);
    const scale = Number.isFinite(chosen) && chosen > 0 ? chosen : 1;
    return {
      a: scale,
      b: 0,
      c: 0,
      d: scale,
      e: target.x + target.width / 2 - (source.x + source.width / 2) * scale,
      f: target.y + target.height / 2 - (source.y + source.height / 2) * scale
    };
  };
  const printPathData = segments => segments.map(({code, args}) => {
    if (args.length === 0) return code;
    const numbers = args.map(value => {
      const rounded = Math.round(value * 100) / 100;
      return String(Object.is(rounded, -0) ? 0 : rounded);
    });
    return `${code} ${numbers.join(" ")}`;
  }).join(" ");
  const shapePathData = (tag, attrs) => {
    const number = (name, fallback = 0) => {
      const value = parseFloat(attrs[name]);
      return Number.isFinite(value) ? value : fallback;
    };
    if (tag === "path") {
      const d = typeof attrs.d === "string" ? attrs.d.trim() : "";
      return d === "" ? null : d;
    }
    if (tag === "rect") {
      const width = number("width");
      const height = number("height");
      if (!(width > 0) || !(height > 0)) return null;
      const x = number("x");
      const y = number("y");
      const declaredX = parseFloat(attrs.rx);
      const declaredY = parseFloat(attrs.ry);
      const rawX = Number.isFinite(declaredX) ? declaredX : declaredY;
      const rawY = Number.isFinite(declaredY) ? declaredY : declaredX;
      const rx = Math.min(Math.max(Number.isFinite(rawX) ? rawX : 0, 0), width / 2);
      const ry = Math.min(Math.max(Number.isFinite(rawY) ? rawY : 0, 0), height / 2);
      if (rx === 0 || ry === 0) {
        return `M ${x} ${y} H ${x + width} V ${y + height} H ${x} Z`;
      }
      return [`M ${x + rx} ${y}`, `H ${x + width - rx}`, `A ${rx} ${ry} 0 0 1 ${x + width} ${y + ry}`, `V ${y + height - ry}`, `A ${rx} ${ry} 0 0 1 ${x + width - rx} ${y + height}`, `H ${x + rx}`, `A ${rx} ${ry} 0 0 1 ${x} ${y + height - ry}`, `V ${y + ry}`, `A ${rx} ${ry} 0 0 1 ${x + rx} ${y}`, "Z"].join(" ");
    }
    if (tag === "circle" || tag === "ellipse") {
      const rx = tag === "circle" ? number("r") : number("rx");
      const ry = tag === "circle" ? number("r") : number("ry");
      if (!(rx > 0) || !(ry > 0)) return null;
      const cx = number("cx");
      const cy = number("cy");
      return [`M ${cx - rx} ${cy}`, `A ${rx} ${ry} 0 1 0 ${cx + rx} ${cy}`, `A ${rx} ${ry} 0 1 0 ${cx - rx} ${cy}`, "Z"].join(" ");
    }
    if (tag === "line") {
      const x1 = number("x1");
      const y1 = number("y1");
      const x2 = number("x2");
      const y2 = number("y2");
      if (x1 === x2 && y1 === y2) return null;
      return `M ${x1} ${y1} L ${x2} ${y2}`;
    }
    if (tag === "polyline" || tag === "polygon") {
      const values = String(attrs.points ?? "").trim().split(/[\s,]+/).map(Number).filter(value => Number.isFinite(value));
      if (values.length < 4) return null;
      const steps = [`M ${values[0]} ${values[1]}`];
      for (let index = 2; index + 1 < values.length; index += 2) {
        steps.push(`L ${values[index]} ${values[index + 1]}`);
      }
      if (tag === "polygon") steps.push("Z");
      return steps.join(" ");
    }
    return null;
  };
  const svgToPathData = (svgText, targetPathData, doc = document) => {
    const NS = "http://www.w3.org/2000/svg";
    const parsed = new DOMParser().parseFromString(String(svgText), "image/svg+xml");
    if (parsed.getElementsByTagName("parsererror").length > 0 || !parsed.documentElement || parsed.documentElement.localName !== "svg") {
      throw new Error("That file is not an SVG, or its markup is malformed.");
    }
    const host = doc.createElement("div");
    host.setAttribute("aria-hidden", "true");
    host.style.cssText = "position:fixed;left:-99999px;top:0;width:600px;height:600px;overflow:hidden;";
    const svg = doc.importNode(parsed.documentElement, true);
    host.appendChild(svg);
    doc.body.appendChild(host);
    try {
      const reference = doc.createElementNS(NS, "g");
      svg.appendChild(reference);
      const rootMatrix = reference.getScreenCTM();
      const defining = ["defs", "clipPath", "mask", "symbol", "marker", "pattern"];
      const isDefinition = element => {
        for (let node = element.parentNode; node && node !== svg; node = node.parentNode) {
          if (defining.includes(node.localName)) return true;
        }
        return false;
      };
      const shapes = [...svg.querySelectorAll("path,rect,circle,ellipse,line,polyline,polygon")];
      const segments = [];
      let shapesUsed = 0;
      let firstProblem = null;
      for (const element of shapes) {
        if (isDefinition(element)) continue;
        if (doc.defaultView.getComputedStyle(element).display === "none") continue;
        const attrs = {};
        for (const attribute of element.attributes) attrs[attribute.localName] = attribute.value;
        const d = shapePathData(element.localName, attrs);
        if (d === null) continue;
        let own;
        try {
          own = normalisePathData(parsePathData(d));
        } catch (error) {
          firstProblem = firstProblem ?? error.message;
          continue;
        }
        const matrix = element.getScreenCTM();
        segments.push(...rootMatrix && matrix ? transformPathData(own, rootMatrix.inverse().multiply(matrix)) : own);
        shapesUsed += 1;
      }
      if (segments.length === 0) {
        if (firstProblem) throw new Error(`This SVG has unreadable path data: ${firstProblem}.`);
        const untraceable = ["text", "image", "use"].find(tag => svg.getElementsByTagName(tag).length > 0);
        throw new Error(untraceable ? `This SVG draws with <${untraceable}>, which has no outline to trace. Convert it to paths and try again.` : "This SVG has no shapes to import.");
      }
      const probe = doc.createElementNS(NS, "path");
      svg.appendChild(probe);
      probe.setAttribute("d", printPathData(segments));
      const source = probe.getBBox();
      if (!(source.width > 0) || !(source.height > 0)) {
        if (!(source.width > 0) && !(source.height > 0)) {
          throw new Error("This SVG's shapes have no size.");
        }
      }
      probe.setAttribute("d", String(targetPathData));
      const target = probe.getBBox();
      return {
        d: printPathData(transformPathData(segments, fitMatrix(source, target))),
        shapes: shapesUsed
      };
    } finally {
      host.remove();
    }
  };
  const granularity = value => {
    const decimals = String(value).split(".")[1];
    return decimals ? Number(`1e-${decimals.length}`) : 1;
  };
  const readout = (variable, value) => {
    if (variable.type === "number") return "";
    if (variable.type === "color") return String(value);
    if (variable.type === "enum") {
      const hit = (variable.options ?? []).find(o => o.value === value);
      return hit ? hit.label ?? hit.value : String(value);
    }
    return "";
  };
  const control = (variable, value, onChange, note, onNote, onTyping) => {
    const options = variable.options ?? [];
    if (variable.type === "enum" && options.length > 0 && options.length <= 4) {
      return <div className="hf-ve-seg">
          {options.map(o => <button key={o.value} type="button" data-on={value === o.value} aria-pressed={value === o.value} onClick={() => onChange(o.value)} className="hf-ve-seg-btn hf-ve-tint">
              {o.label ?? o.value}
            </button>)}
        </div>;
    }
    if (variable.type === "enum") {
      return <select className="hf-ve-field hf-ve-select hf-ve-tint" value={value} aria-label={variable.label ?? variable.id} onChange={e => onChange(e.target.value)}>
          {options.map(o => <option key={o.value} value={o.value}>
              {o.label ?? o.value}
            </option>)}
        </select>;
    }
    if (variable.type === "number") {
      const min = Number(variable.min);
      const max = Number(variable.max);
      const unit = variable.unit ?? "";
      const declaredStep = Number(variable.step);
      const step = declaredStep > 0 ? declaredStep : 1;
      const label = variable.label ?? variable.id;
      if (!(Number.isFinite(min) && Number.isFinite(max) && max > min)) {
        return <input type="number" className="hf-ve-field hf-ve-mono hf-ve-tint" value={value} min={Number.isFinite(min) ? min : undefined} max={Number.isFinite(max) ? max : undefined} step={declaredStep > 0 ? declaredStep : granularity(variable.default)} aria-label={label} onChange={e => {
          const next = Number(e.target.value);
          if (e.target.value !== "" && Number.isFinite(next)) onChange(next);
        }} />;
      }
      const at = n => Math.min(1, Math.max(0, (Number(n) - min) / (max - min)));
      const now = at(value);
      const authored = at(variable.default);
      const place = fraction => ({
        offset: `${fraction * 100}%`,
        nudge: `${(0.5 - fraction) * 16}px`
      });
      const value_ = place(now);
      const default_ = place(authored);
      const grain = event => {
        event.currentTarget.step = event.shiftKey ? step / 10 : step;
      };
      return <div className="hf-ve-slider" style={{
        "--ve-fill": value_.offset,
        "--ve-fill-nudge": value_.nudge,
        "--ve-default": default_.offset,
        "--ve-default-nudge": default_.nudge
      }}>
          {}
          <div className="hf-ve-ruler" data-near={now < 0.14 ? "min" : now > 0.86 ? "max" : ""} aria-hidden="true">
            <span className="hf-ve-bound" data-end="min">
              {min}
            </span>
            <span className="hf-ve-bound" data-end="max">
              {max}
            </span>
            <span className="hf-ve-readout">
              {value}
              {unit}
            </span>
          </div>
          <span className="hf-ve-track">
            <input type="range" className="hf-ve-range" min={min} max={max} step={step} value={value} aria-label={label} aria-valuetext={`${value}${unit}`} onChange={e => onChange(Number(e.target.value))} onPointerDown={grain} onKeyDown={grain} onDoubleClick={() => onChange(variable.default)} />
            {}
            {Math.abs(now - authored) > 0.04 && <span className="hf-ve-default" aria-hidden="true" />}
          </span>
        </div>;
    }
    if (variable.type === "boolean") {
      const on = value === true || value === "true";
      return <button type="button" role="switch" aria-checked={on} aria-label={variable.label ?? variable.id} data-on={on} onClick={() => onChange(!on)} className="hf-ve-switch">
          <span className="hf-ve-switch-dot" />
        </button>;
    }
    if (variable.type === "color") {
      return <div className="flex items-center gap-2">
          <input type="color" className="hf-ve-swatch hf-ve-tint" value={value} aria-label={variable.label ?? variable.id} onChange={e => onChange(e.target.value)} />
          <input type="text" className="hf-ve-field hf-ve-mono hf-ve-tint" value={value} onChange={e => onChange(e.target.value)} onFocus={() => onTyping(variable.id)} onBlur={() => onTyping(null)} onKeyDown={e => {
        if (e.key === "Enter") e.currentTarget.blur();
      }} />
        </div>;
    }
    if (isSvgPathData(variable.default)) {
      const fileId = `hf-ve-file-${variable.id}`;
      const noteId = `hf-ve-note-${variable.id}`;
      const receive = file => {
        if (!file) return;
        file.text().then(text => {
          const {d, shapes} = svgToPathData(text, variable.default);
          onChange(d);
          onNote({
            tone: "ok",
            message: `${file.name}: ${shapes} shape${shapes === 1 ? "" : "s"} scaled to fit.`
          });
        }).catch(error => onNote({
          tone: "error",
          message: error.message
        }));
      };
      return <div className="hf-ve-drop" onDragOver={event => {
        event.preventDefault();
        event.currentTarget.dataset.over = "true";
      }} onDragLeave={event => {
        event.currentTarget.dataset.over = "false";
      }} onDrop={event => {
        event.preventDefault();
        event.currentTarget.dataset.over = "false";
        receive(event.dataTransfer.files[0]);
      }}>
          {}
          <div className="hf-ve-dropzone">
            <button type="button" className="hf-ve-btn hf-ve-tint" onClick={() => document.getElementById(fileId).click()}>
              Import SVG
            </button>
            <input id={fileId} type="file" accept=".svg,image/svg+xml" className="hf-ve-file" tabIndex={-1} aria-hidden="true" onChange={event => {
        receive(event.target.files[0]);
        event.target.value = "";
      }} />
            {}
            <p id={noteId} role="status" className="hf-ve-note" data-tone={note ? note.tone : ""}>
              {note ? note.message : "Or drop one here. Scaled to fit and centred."}
            </p>
          </div>
          <details className="hf-ve-advanced">
            <summary>Path data</summary>
            <input type="text" className="hf-ve-field hf-ve-mono hf-ve-tint" value={value} aria-label={variable.label ?? variable.id} onChange={e => onChange(e.target.value)} onFocus={() => onTyping(variable.id)} onBlur={() => onTyping(null)} onKeyDown={e => {
        if (e.key === "Enter") e.currentTarget.blur();
      }} />
          </details>
        </div>;
    }
    return <input type="text" className="hf-ve-field hf-ve-tint" value={value} aria-label={variable.label ?? variable.id} onChange={e => onChange(e.target.value)} onFocus={() => onTyping(variable.id)} onBlur={() => onTyping(null)} onKeyDown={e => {
      if (e.key === "Enter") e.currentTarget.blur();
    }} />;
  };
  const variablesKey = JSON.stringify(variables);
  const defaults = useMemo(() => {
    const built = {};
    for (const v of variables) if (v.default !== undefined) built[v.id] = v.default;
    return built;
  }, [variablesKey]);
  const urlKey = `vars-${compositionId}`;
  const readFromUrl = () => {
    if (typeof window === "undefined") return {};
    try {
      const raw = new URLSearchParams(window.location.search).get(urlKey);
      if (!raw) return {};
      const parsed = JSON.parse(raw);
      if (!parsed || typeof parsed !== "object" || Array.isArray(parsed)) return {};
      const declared = new Set(variables.map(v => v.id));
      return Object.fromEntries(Object.entries(parsed).filter(([id]) => declared.has(id)));
    } catch {
      return {};
    }
  };
  const [values, setValues] = useState(() => ({
    ...defaults,
    ...readFromUrl()
  }));
  useEffect(() => {
    const fromUrl = readFromUrl();
    if (Object.keys(fromUrl).length > 0) setValues(current => ({
      ...current,
      ...fromUrl
    }));
  }, []);
  useEffect(() => {
    if (typeof window === "undefined") return;
    const changed = Object.fromEntries(Object.entries(values).filter(([id, value]) => JSON.stringify(value) !== JSON.stringify(defaults[id])));
    const url = new URL(window.location.href);
    if (Object.keys(changed).length === 0) url.searchParams.delete(urlKey); else url.searchParams.set(urlKey, JSON.stringify(changed));
    const next = url.toString();
    if (next !== window.location.href) {
      window.history.replaceState(null, "", next);
      window.dispatchEvent(new CustomEvent("hf-vars-changed"));
    }
  }, [values, defaults, urlKey]);
  const [notes, setNotes] = useState({});
  const [typing, setTyping] = useState(null);
  const posted = useRef(null);
  const frame = useRef(null);
  const bootstrap = ["<!doctype html><html><head><meta charset='utf-8'>", "<style>html,body{margin:0;height:100%;overflow:hidden;background:transparent}", "hyperframes-player{display:block;width:100%;height:100%}</style>", '<script src="https://cdn.jsdelivr.net/npm/@hyperframes/player@latest/dist/hyperframes-player.global.js"></' + "script>", "</head><body><script>", "(function(){", `  var PAYLOAD = ${JSON.stringify(previewSrc)};`, `  var INITIAL = ${JSON.stringify({
    ...defaults,
    ...readFromUrl()
  })};`, "  var html = null, player = null, poll = null;", "  function withValues(source, values) {", "    var json = JSON.stringify(values);", "    var attr = json.replace(/'/g, '&#39;');", "    var out = source.replace(/\\sdata-variable-values=(?:\"[^\"]*\"|'[^']*')/gi, '');", "    out = out.replace(/(data-composition-src=)/gi, \"data-variable-values='\" + attr + \"' $1\");", "    var tag = '<' + 'script>window.__hfVariables=' + json + ';<' + '/script>';", "    return /<head[^>]*>/i.test(out)", "      ? out.replace(/<head([^>]*)>/i, '<head$1>' + tag)", "      : tag + out;", "  }", "  function arm(resumeAt) {", "    clearInterval(poll);", "    var last = -1, tries = 0, seeked = false;", "    poll = setInterval(function () {", "      if (player.ready) {", "        if (!seeked) { seeked = true; if (resumeAt > 0) player.seek(resumeAt); }", "        player.play();", "      }", "      if (seeked && player.currentTime > 0 && player.currentTime !== last) {", "        clearInterval(poll); return;", "      }", "      last = player.currentTime;", "      if (++tries > 150) clearInterval(poll);", "    }, 100);", "  }", "  function mount(values, resumeAt) {", "    if (html === null) return;", "    player.setAttribute('srcdoc', withValues(html, values));", "    arm(resumeAt || 0);", "  }", "  player = document.createElement('hyperframes-player');", "  player.setAttribute('controls', ''); player.setAttribute('muted', '');", "  document.body.appendChild(player);", "  player.addEventListener('ended', function () { player.seek(0); player.play(); });", "  fetch(PAYLOAD).then(function (r) { return r.json(); }).then(function (d) {", "    html = d.html; mount(INITIAL, 0);", "  }).catch(function (e) {", "    document.body.innerHTML = '<pre style=\"color:#f66;font:12px monospace;padding:12px\">preview unavailable: ' + e + '</pre>';", "  });", "  addEventListener('message', function (event) {", "    var values = event.data && event.data.hfVariables;", "    if (!values) return;", "    mount(values, player.currentTime || 0);", "  });", "})();", "</" + "script></body></html>"].join("");
  useEffect(() => {
    if (typing !== null) return;
    const payload = JSON.stringify(values);
    if (payload === posted.current) return;
    const timer = setTimeout(() => {
      const target = frame.current && frame.current.contentWindow;
      if (!target) return;
      posted.current = payload;
      target.postMessage({
        hfVariables: values
      }, window.location.origin);
    }, 150);
    return () => clearTimeout(timer);
  }, [values, typing]);
  const printed = JSON.stringify(values, null, 2).split("\n").join("\n  ");
  const attributes = [["data-composition-id", `"${compositionId}"`], ["data-composition-src", `"${compositionSrc}"`], ["data-variable-values", `'${printed}'`]];
  const snippetLines = [[[SHIKI.punct, "<"], [SHIKI.tag, "div"]]];
  for (const [name, literal] of attributes) {
    const [head, ...rest] = literal.split("\n");
    snippetLines.push([[SHIKI.attr, `  ${name}`], [SHIKI.equals, "="], [SHIKI.value, head]]);
    for (const line of rest) snippetLines.push([[SHIKI.value, line]]);
  }
  snippetLines.push([[SHIKI.punct, "></"], [SHIKI.tag, "div"], [SHIKI.punct, ">"]]);
  const dirty = variables.some(v => values[v.id] !== defaults[v.id]);
  const hasTune = variables.length > 0;
  const [tab, setTab] = useState("preview");
  const lines = meta.codeLines;
  const TABS = [["preview", "Preview"], ...hasCode ? [["code", "Code", lines ? `${lines} ln` : ""]] : [], ["install", "Snippet"], ["docs", "Docs"]];
  const changedValues = () => {
    const changed = {};
    for (const v of variables) {
      if (JSON.stringify(values[v.id]) !== JSON.stringify(defaults[v.id])) changed[v.id] = values[v.id];
    }
    return changed;
  };
  const renderCommand = (() => {
    const changed = changedValues();
    const vars = Object.keys(changed).length ? ` --variables '${JSON.stringify(changed).replace(/'/g, "'\\''")}'` : "";
    return `# Run from the installed project's root.\nnpx hyperframes render --composition '${compositionSrc}'${vars}`;
  })();
  const agentRequest = (() => {
    const changed = changedValues();
    const base = `Install the HyperFrames catalog item "${compositionId}" (${title || compositionId}) into my project with \`npx hyperframes add ${compositionId}\`, mount it at the point of my composition where it should play, and verify with \`npx hyperframes check\`.`;
    const set = Object.entries(changed).map(([id, value]) => `${id} = ${JSON.stringify(value)}`);
    return set.length ? `${base} Set ${set.join(", ")}; keep the other variables at their defaults.` : `${base} Keep the default variables unless I say otherwise.`;
  })();
  const [copiedKey, setCopiedKey] = useState("");
  const copy = async (key, text) => {
    let ok = false;
    try {
      await navigator.clipboard.writeText(text);
      ok = true;
    } catch {
      const area = document.createElement("textarea");
      area.value = text;
      area.setAttribute("readonly", "");
      area.style.cssText = "position:fixed;opacity:0";
      document.body.appendChild(area);
      area.select();
      ok = document.execCommand("copy");
      area.remove();
    }
    if (!ok) return;
    setCopiedKey(key);
    setTimeout(() => setCopiedKey(current => current === key ? "" : current), 1400);
  };
  const CopyAction = ({id, label, text, primary}) => {
    const shown = copiedKey === id ? "Copied" : label;
    return <button type="button" className="hf-ve-action" data-primary={primary ? "true" : "false"} onClick={() => copy(id, typeof text === "function" ? text() : text)}>
        {[label, "Copied"].map(name => <span key={name} className="hf-ve-action-label" data-shown={String(name === shown)}>
            {name}
          </span>)}
      </button>;
  };
  const wiring = snippetLines.map(tokens => tokens.map(([, text]) => text).join("")).join("\n");
  const mountText = `${wiring}\n`;
  const flagNotice = needsFlag ? <div className="flex aspect-video w-full items-center justify-center text-sm text-zinc-500">
      Needs <code>chrome://flags/#{needsFlag}</code> to render live
    </div> : null;
  const player = <iframe ref={frame} srcDoc={bootstrap} className="hf-ve-preview block aspect-video w-full" title={`${compositionId} preview`} />;
  const recordedRef = useRef(null);
  const [reduced, setReduced] = useState(() => typeof window !== "undefined" && window.matchMedia("(prefers-reduced-motion: reduce)").matches);
  useEffect(() => {
    const query = window.matchMedia("(prefers-reduced-motion: reduce)");
    const onChange = event => setReduced(event.matches);
    query.addEventListener("change", onChange);
    return () => query.removeEventListener("change", onChange);
  }, []);
  useEffect(() => {
    const clip = recordedRef.current;
    if (!reduced || !clip) return;
    clip.pause();
    clip.removeAttribute("src");
    clip.load();
  }, [reduced]);
  const recorded = video ? <video ref={recordedRef} className="block aspect-video w-full object-cover" src={reduced ? undefined : video} poster={poster} autoPlay={!reduced} muted loop={!reduced} playsInline /> : null;
  const [hasAdapter, setHasAdapter] = useState(null);
  const hasWebgpuAdapter = (gpu, timeoutMs) => {
    const probe = new Promise(resolve => resolve(gpu?.requestAdapter())).then(adapter => Boolean(adapter), () => false);
    const timeout = new Promise(resolve => setTimeout(resolve, timeoutMs, false));
    return Promise.race([probe, timeout]);
  };
  useEffect(() => {
    if (webgpu) hasWebgpuAdapter(navigator.gpu, 3000).then(setHasAdapter);
  }, [webgpu]);
  const adapterMissing = webgpu && hasAdapter === false;
  const tunePanel = hasTune && !(webgpu && hasAdapter !== true);
  let webgpuStage = player;
  if (webgpu && hasAdapter === null) webgpuStage = <div className="aspect-video w-full" />;
  if (adapterMissing) webgpuStage = recorded;
  const stageNode = webgpu ? webgpuStage : (recorded ?? flagNotice) ?? player;
  let caption = "Live composition · HyperFrames Player";
  if (adapterMissing) caption = "Recorded preview · live playback needs WebGPU, which this browser does not offer"; else if (!webgpu && (video || needsFlag)) caption = "Recorded preview";
  const slotOf = node => {
    for (let cur = node; React.isValidElement(cur); cur = React.Children.toArray(cur.props.children)[0]) {
      if (cur.props.slot) return cur.props.slot;
    }
    return null;
  };
  const allSlots = React.Children.toArray(children);
  const installSlot = allSlots.find(child => slotOf(child) === "install") ?? null;
  const otherSlots = allSlots.filter(child => child !== installSlot);
  const seconds = meta.duration ? `${meta.duration} s` : null;
  const size = meta.width && meta.height ? `${meta.width}×${meta.height}` : null;
  return <div className="hf-ve my-4">
      <style dangerouslySetInnerHTML={{
    __html: CSS
  }} />

      <div className="not-prose">
        <header className="hf-ve-head-title">
          <h1>{title}</h1>
          {description && <p>{description}</p>}
        </header>
      </div>

      {installSlot && <div className="hf-ve-install">
          <h2 className="hf-ve-install-title">Install</h2>
          {installSlot}
        </div>}

      <div className="not-prose">

        <div className="hf-ve-bar">
          <div className="hf-ve-meta">
            {seconds && <span>
                <b>{seconds}</b> duration
              </span>}
            {size && <b>{size}</b>}
            {hasTune && <span>
                <b>{variables.length}</b> {variables.length === 1 ? "variable" : "variables"}
              </span>}
            {meta.category && <b>{meta.category}</b>}
            {meta.badge && <span className="hf-ve-badge">{meta.badge}</span>}
          </div>
          <div className="hf-ve-actions">
            <CopyAction id="agent" label="Copy agent request" text={agentRequest} primary />
            <CopyAction id="wiring" label="Copy wiring" text={mountText} />
            <CopyAction id="link" label="Copy link" text={() => window.location.href} />
            {rawUrl && <a className="hf-ve-action" href={rawUrl} target="_blank" rel="noopener noreferrer">
                Raw
              </a>}
          </div>
        </div>

        <div className="hf-ve-main" data-tune={tunePanel ? "true" : "false"}>
          <div className="hf-ve-stage">
            {stageNode}
            <div className="hf-ve-caption">
              {(seconds || size) && <span>{[seconds, size && `${size} preview`].filter(Boolean).join(" · ")}</span>}
              <span>{caption}</span>
            </div>
          </div>

          {tunePanel && <aside className="hf-ve-tune" aria-label="Tune">
              <div className="hf-ve-tune-inner">
                <div className="hf-ve-tune-head">
                  Tune <small>{variables.length} {variables.length === 1 ? "variable" : "variables"}</small>
                </div>
                <TuneList variables={variables} values={values} notes={notes} onValues={setValues} onNotes={setNotes} onTyping={setTyping} control={control} readout={readout} />
                <div className="hf-ve-tune-foot">
                  <button type="button" onClick={() => {
    setValues(defaults);
    setNotes({});
  }} disabled={!dirty} className="hf-ve-action">
                    Reset
                  </button>
                  <CopyAction id="json" label="Copy JSON" text={() => JSON.stringify(dirty ? changedValues() : defaults, null, 2)} />
                  <CopyAction id="render" label="Copy render cmd" text={renderCommand} />
                </div>
              </div>
            </aside>}
        </div>

        <div className="hf-ve-tabs hf-ve-tabs-row" role="tablist">
          {TABS.map(([id, label, note]) => <button key={id} type="button" role="tab" data-on={tab === id} aria-selected={tab === id} onClick={() => setTab(id)} className="hf-ve-tab hf-ve-tint">
              {label}
              {note ? <small>{note}</small> : null}
            </button>)}
        </div>
      </div>

      <div className="hf-ve-body">
        {}
        <div className="hf-ve-slots" data-tab={tab}>
          {otherSlots}
        </div>
        <div className="hf-ve-body-pane hf-ve-about not-prose" hidden={tab !== "preview"}>
          <h3>About</h3>
          {about && <p>{about}</p>}
          {attribution && <p className="hf-ve-attr">
              {attribution.author ? <>
                  Created by{" "}
                  {attribution.authorUrl ? <a href={attribution.authorUrl} target="_blank" rel="noopener noreferrer">
                      {attribution.author}
                    </a> : attribution.author}{" "}
                  ·{" "}
                </> : null}
              Registry item{" "}
              <a href={`https://github.com/heygen-com/hyperframes/tree/main/${attribution.path}`} target="_blank" rel="noopener noreferrer">
                heygen-com/hyperframes
              </a>{" "}
              · <code>{attribution.path}</code>
              {attribution.tags.length > 0 ? ` · ${attribution.tags.join(", ")}` : ""}
            </p>}
        </div>
        <div className="hf-ve-body-pane hf-ve-snippet not-prose" hidden={tab !== "install"}>
          {}
          <CodeBlock filename="index.html">
            <pre className="shiki shiki-themes github-light-default dark-plus" style={{
    backgroundColor: "rgb(255, 255, 255)",
    "--shiki-dark-bg": "#0B0C0E",
    color: "rgb(31, 35, 40)",
    "--shiki-dark": "#D4D4D4"
  }}>
              <code>
                {snippetLines.map((tokens, line) => <span key={line} className="line">
                    {tokens.map(([style, text], token) => <span key={token} style={style}>
                        {text}
                      </span>)}
                    {"\n"}
                  </span>)}
              </code>
            </pre>
          </CodeBlock>
        </div>
      </div>
    </div>;
};

<CatalogDetail previewSrc="/public/catalog/blocks/chatgpt-exchange.json" compositionId="chatgpt-exchange" compositionSrc="compositions/chatgpt-exchange.html" title="ChatGPT Exchange" description="A portrait ChatGPT-style exchange types and sends a prompt, streams an answer, assembles a comparison table, and scrolls back through the result" variables={[{"id":"prompt","type":"string","role":"content","label":"User prompt","description":"Prompt typed into ChatGPT; keep close to the original length.","default":"Hey what&#39;s the best tool for ai avatars"},{"id":"intro1","type":"string","role":"content","label":"Answer introduction 1","description":"First streamed answer paragraph.","default":"It really depends on what you&#39;re trying to do, because “AI avatars” has split into a few different categories."},{"id":"intro2","type":"string","role":"content","label":"Answer introduction 2","description":"Second streamed answer paragraph.","default":"For **most creators and marketers**, here&#39;s how I&#39;d rank them today:"},{"id":"tableHeadUse","type":"string","role":"content","label":"Table heading 1","description":"Use-case column heading.","default":"Use case"},{"id":"tableHeadTool","type":"string","role":"content","label":"Table heading 2","description":"Tool column heading.","default":"Best tool"},{"id":"tableHeadWhy","type":"string","role":"content","label":"Table heading 3","description":"Explanation column heading.","default":"Why"},{"id":"row1Use","type":"string","role":"content","label":"Row 1 use case","description":"First comparison use case.","default":"Overall realism"},{"id":"row1Tool","type":"string","role":"content","label":"Row 1 tool","description":"Product in the recommended first row: the brand this video promotes, by its real name.","portrays":["subject_name","recommended_position"],"default":"HeyGen"},{"id":"row1Why","type":"string","role":"content","label":"Row 1 explanation","description":"Why the recommended first-row product wins. Describe the promoted brand from what its own site claims.","portrays":["recommended_position"],"default":"Most natural facial expressions, lip sync, gestures, voice cloning and localization. Benchmark for talking head videos."},{"id":"row1Chip","type":"string","role":"content","label":"Row 1 source","description":"Source chip on the first row. It asserts where the ranking came from, so use a neutral label whenever the comparison is written for this remix.","portrays":["authority_badge"],"default":"Official A.I Ranking"},{"id":"row2Use","type":"string","role":"content","label":"Row 2 use case","description":"Second comparison use case.","default":"Enterprise/training"},{"id":"row2Tool","type":"string","role":"content","label":"Row 2 tool","description":"Product compared in the second row: a real product other than the brand this video promotes.","portrays":["competitor_name"],"default":"Synthesia"},{"id":"row2Why","type":"string","role":"content","label":"Row 2 explanation","description":"Second recommendation explanation.","default":"Better collaboration, SCORM, compliance, team workflows; less creator-focused."},{"id":"row2Chip","type":"string","role":"content","label":"Row 2 source","description":"Source chip on the second row. It asserts where the ranking came from, so use a neutral label whenever the comparison is written for this remix.","portrays":["authority_badge"],"default":"Official A.I Ranking"},{"id":"row3Use","type":"string","role":"content","label":"Row 3 use case","description":"Third comparison use case.","default":"Mobile UGC"},{"id":"row3Tool","type":"string","role":"content","label":"Row 3 tool","description":"Product compared in the third row: a real product other than the brand this video promotes.","portrays":["competitor_name"],"default":"Captions"},{"id":"row3Why","type":"string","role":"content","label":"Row 3 explanation","description":"Third recommendation explanation.","default":"Extremely fast mobile workflow and social editing. Great for Reels creators."},{"id":"row3Chip","type":"string","role":"content","label":"Row 3 source","description":"Source chip on the third row. It asserts where the ranking came from, so use a neutral label whenever the comparison is written for this remix.","portrays":["authority_badge"],"default":"Creator Stack"},{"id":"row4Use","type":"string","role":"content","label":"Row 4 use case","description":"Fourth comparison use case.","default":"Real-time conversations"},{"id":"row4Tool","type":"string","role":"content","label":"Row 4 tool","description":"Product compared in the fourth row: a real product other than the brand this video promotes.","portrays":["competitor_name"],"default":"Tavus"},{"id":"row4Why","type":"string","role":"content","label":"Row 4 explanation","description":"Fourth recommendation explanation.","default":"Interactive avatars that can hold live conversations."},{"id":"row4Chip","type":"string","role":"content","label":"Row 4 source","description":"Source chip on the fourth row. It asserts where the ranking came from, so use a neutral label whenever the comparison is written for this remix.","portrays":["authority_badge"],"default":"Creator Stack"}]} meta={{"duration":14.9,"width":1080,"height":1920,"category":"Showcases","badge":"Stable","codeLines":1444}} attribution={{"author":"Jake Moran","path":"registry/blocks/chatgpt-exchange","tags":["showcase","mock-ui","ai","chat","vertical","ad-template"]}} hasCode rawUrl="https://raw.githubusercontent.com/heygen-com/hyperframes/main/registry/blocks/chatgpt-exchange/chatgpt-exchange.html">
  <CatalogSlot slot="code">
    ```html chatgpt-exchange.html theme={null}
    <!doctype html>
    <html
      lang="en"
      data-resolution="portrait"
      data-composition-variables='[
        { "id": "prompt", "type": "string", "role": "content", "label": "User prompt", "description": "Prompt typed into ChatGPT; keep close to the original length.", "default": "Hey what&#39;s the best tool for ai avatars" },
        { "id": "intro1", "type": "string", "role": "content", "label": "Answer introduction 1", "description": "First streamed answer paragraph.", "default": "It really depends on what you&#39;re trying to do, because “AI avatars” has split into a few different categories." },
        { "id": "intro2", "type": "string", "role": "content", "label": "Answer introduction 2", "description": "Second streamed answer paragraph.", "default": "For **most creators and marketers**, here&#39;s how I&#39;d rank them today:" },
        { "id": "tableHeadUse", "type": "string", "role": "content", "label": "Table heading 1", "description": "Use-case column heading.", "default": "Use case" },
        { "id": "tableHeadTool", "type": "string", "role": "content", "label": "Table heading 2", "description": "Tool column heading.", "default": "Best tool" },
        { "id": "tableHeadWhy", "type": "string", "role": "content", "label": "Table heading 3", "description": "Explanation column heading.", "default": "Why" },
        { "id": "row1Use", "type": "string", "role": "content", "label": "Row 1 use case", "description": "First comparison use case.", "default": "Overall realism" },
        { "id": "row1Tool", "type": "string", "role": "content", "label": "Row 1 tool", "description": "Product in the recommended first row: the brand this video promotes, by its real name.", "portrays": ["subject_name", "recommended_position"], "default": "HeyGen" },
        { "id": "row1Why", "type": "string", "role": "content", "label": "Row 1 explanation", "description": "Why the recommended first-row product wins. Describe the promoted brand from what its own site claims.", "portrays": ["recommended_position"], "default": "Most natural facial expressions, lip sync, gestures, voice cloning and localization. Benchmark for talking head videos." },
        { "id": "row1Chip", "type": "string", "role": "content", "label": "Row 1 source", "description": "Source chip on the first row. It asserts where the ranking came from, so use a neutral label whenever the comparison is written for this remix.", "portrays": ["authority_badge"], "default": "Official A.I Ranking" },
        { "id": "row2Use", "type": "string", "role": "content", "label": "Row 2 use case", "description": "Second comparison use case.", "default": "Enterprise/training" },
        { "id": "row2Tool", "type": "string", "role": "content", "label": "Row 2 tool", "description": "Product compared in the second row: a real product other than the brand this video promotes.", "portrays": ["competitor_name"], "default": "Synthesia" },
        { "id": "row2Why", "type": "string", "role": "content", "label": "Row 2 explanation", "description": "Second recommendation explanation.", "default": "Better collaboration, SCORM, compliance, team workflows; less creator-focused." },
        { "id": "row2Chip", "type": "string", "role": "content", "label": "Row 2 source", "description": "Source chip on the second row. It asserts where the ranking came from, so use a neutral label whenever the comparison is written for this remix.", "portrays": ["authority_badge"], "default": "Official A.I Ranking" },
        { "id": "row3Use", "type": "string", "role": "content", "label": "Row 3 use case", "description": "Third comparison use case.", "default": "Mobile UGC" },
        { "id": "row3Tool", "type": "string", "role": "content", "label": "Row 3 tool", "description": "Product compared in the third row: a real product other than the brand this video promotes.", "portrays": ["competitor_name"], "default": "Captions" },
        { "id": "row3Why", "type": "string", "role": "content", "label": "Row 3 explanation", "description": "Third recommendation explanation.", "default": "Extremely fast mobile workflow and social editing. Great for Reels creators." },
        { "id": "row3Chip", "type": "string", "role": "content", "label": "Row 3 source", "description": "Source chip on the third row. It asserts where the ranking came from, so use a neutral label whenever the comparison is written for this remix.", "portrays": ["authority_badge"], "default": "Creator Stack" },
        { "id": "row4Use", "type": "string", "role": "content", "label": "Row 4 use case", "description": "Fourth comparison use case.", "default": "Real-time conversations" },
        { "id": "row4Tool", "type": "string", "role": "content", "label": "Row 4 tool", "description": "Product compared in the fourth row: a real product other than the brand this video promotes.", "portrays": ["competitor_name"], "default": "Tavus" },
        { "id": "row4Why", "type": "string", "role": "content", "label": "Row 4 explanation", "description": "Fourth recommendation explanation.", "default": "Interactive avatars that can hold live conversations." },
        { "id": "row4Chip", "type": "string", "role": "content", "label": "Row 4 source", "description": "Source chip on the fourth row. It asserts where the ranking came from, so use a neutral label whenever the comparison is written for this remix.", "portrays": ["authority_badge"], "default": "Creator Stack" }
      ]'
    >
      <head>
        <meta charset="UTF-8" />
        <meta name="viewport" content="width=1080, height=1920" />
        <script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
        <style>
          /* The real app sets OpenAI Sans, which is not licensed here. Inter is the
             redistributable OFL stand-in, embedded under a neutral family name so the
             composition remains self-contained and deterministic. */
          @font-face {
            font-family: "ChatUI";
            font-weight: 400;
            font-style: normal;
            font-display: block;
            src: url("assets/fonts/inter-latin-400-normal.woff2") format("woff2");
          }
          @font-face {
            font-family: "ChatUI";
            font-weight: 500;
            font-style: normal;
            font-display: block;
            src: url("assets/fonts/inter-latin-500-normal.woff2") format("woff2");
          }
          @font-face {
            font-family: "ChatUI";
            font-weight: 600;
            font-style: normal;
            font-display: block;
            src: url("assets/fonts/inter-latin-600-normal.woff2") format("woff2");
          }
          @font-face {
            font-family: "Apple Color Emoji";
            src: local("Apple Color Emoji");
          }

          * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
          }
          html,
          body {
            margin: 0;
            width: 1080px;
            height: 1920px;
            overflow: hidden;
            background: #000;
          }
          body,
          #cge-root {
            font-family: "ChatUI", sans-serif;
            -webkit-font-smoothing: antialiased;
          }

          /* ---------------------------------------------------------------- tokens
             Geometry is authored in POINTS (1pt = 1px inside .screen) exactly as
             measured off the source screenshots, then scaled to the 1080x1920 frame.
             The layout is measured from the source UI at 402 × 874 points.       */
          :root {
            --scale: 2.1968; /* 1920 / 874 */
            --ink: #fcfcfc;
            --dim: #a8a8ac;
            --placeholder: #9a9a9e;
            --bubble: #212121;
            --kb-bg: #141414;
            --key: #3c3c3c;
            --key-hit: #5f5f5f;
            --seg-track: #181818;
            --seg-active: #3a3a3a;
            --blue: #48aaff;
            --rule-head: #202020;
            --rule-row: #131313;
            --chip-bg: #0b0b0c;
            --chip-line: #2b2b2d;
          }

          .stage {
            position: absolute;
            inset: 0;
            background: #000;
          }

          .screen {
            position: absolute;
            top: 0;
            left: 50%;
            width: 402px;
            height: 874px;
            margin-left: -201px;
            background: #000;
            overflow: hidden;
            transform-origin: top center;
            transform: scale(var(--scale));
          }

          /* ----------------------------------------------------------- status bar */
          .statusbar {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 65px;
            display: flex;
            align-items: center;
            z-index: 40;
            padding: 0 34px 0 16px;
            color: #fff;
          }
          .sb-left {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-left: 31.7px;
          }
          .sb-clock {
            font-size: 17.2px;
            font-weight: 600;
            letter-spacing: 1.3px;
          }
          .sb-clock-box {
            position: relative;
            width: 38px;
            height: 22px;
          }
          .sb-clock-box span {
            position: absolute;
            left: 0;
            top: 0;
            white-space: nowrap;
          }
          .sb-right {
            display: flex;
            align-items: center;
            gap: 5px;
            margin-left: auto;
          }
          .sb-net {
            font-size: 15px;
            font-weight: 500;
            letter-spacing: -0.2px;
          }
          .sb-batt {
            width: 30px;
            height: 15px;
            border-radius: 4.5px;
            background: #fff;
            color: #000;
            font-size: 11px;
            font-weight: 600;
            display: flex;
            align-items: center;
            justify-content: center;
            letter-spacing: -0.2px;
            position: relative;
          }
          .sb-batt span {
            position: absolute;
          }
          .sb-batt-cap {
            width: 2px;
            height: 6px;
            background: rgba(255, 255, 255, 0.45);
            border-radius: 0 2px 2px 0;
            margin-left: -4px;
          }

          /* --------------------------------------------------------------- header */
          .header {
            position: absolute;
            top: 62px;
            left: 0;
            right: 0;
            height: 44px;
            z-index: 40;
          }
          .status-plate {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 54.7px;
            z-index: 34;
            background: #000;
          }
          .hdr-scrim {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 118px;
            z-index: 30;
            background: rgba(0, 0, 0, 0.3);
            backdrop-filter: blur(2px);
            -webkit-backdrop-filter: blur(2px);
          }
          .circle-btn {
            position: absolute;
            top: 0;
            width: 44px;
            height: 44px;
            border-radius: 22px;
            background: #1c1c1e;
            display: flex;
            align-items: center;
            justify-content: center;
          }
          .hdr-left {
            left: 16px;
          }
          .hdr-right {
            position: absolute;
            top: 0;
            right: 16px;
            width: 44px;
            height: 44px;
            border-radius: 22px;
            background: #1c1c1e;
            overflow: hidden;
          }
          .hdr-right-face {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 18px;
          }
          .seg {
            position: absolute;
            top: -1.7px;
            left: 121.7px;
            width: 158px;
            height: 48px;
            border-radius: 24px;
            background: var(--seg-track);
            display: flex;
            align-items: center;
            padding: 4px;
          }
          .seg-item {
            flex: 1;
            height: 40px;
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 500;
            color: #fff;
          }
          .seg-item.on {
            background: var(--seg-active);
          }

          /* --------------------------------------------------------------- thread */
          .scrollport {
            position: absolute;
            inset: 0;
            overflow: hidden;
            z-index: 10;
          }
          .thread {
            position: relative;
            padding: 128px 16px 190px;
          }

          .bubble {
            position: relative;
            margin-left: auto;
            width: 245.7px;
            background: var(--bubble);
            border-radius: 24px;
            padding: 10px 16px;
            color: var(--ink);
            font-size: 16px;
            line-height: 25.667px;
          }
          .answer {
            margin-top: 36px;
            width: 360px;
            color: var(--ink);
            font-size: 16px;
            line-height: 25.667px;
          }
          .para {
            overflow: hidden;
          }
          .para + .para {
            margin-top: 24px;
          }
          .w {
            opacity: 1;
          }

          /* ---------------------------------------------------------------- table */
          .tbl {
            margin: 19px 0 0 -5.7px;
            width: 480px;
            overflow: hidden;
          }
          .tr {
            display: flex;
            overflow: hidden;
          }
          .td {
            padding: 8px 12px 8px 0;
            font-size: 14.5px;
            line-height: 23px;
            color: var(--ink);
          }
          .c1 {
            width: 168px;
          }
          .c2 {
            width: 120px;
            font-weight: 600;
          }
          .c3 {
            width: 173px;
          }
          .th {
            font-size: 14.5px;
            line-height: 23px;
            font-weight: 600;
            padding-bottom: 6px;
          }
          .rule-head {
            height: 2px;
            background: var(--rule-head);
          }
          .rule-row {
            height: 2px;
            background: var(--rule-row);
          }
          .use {
            display: flex;
            gap: 8px;
            align-items: baseline;
          }
          .emo {
            font-family: "Apple Color Emoji";
            font-size: 14px;
          }
          .chip {
            display: flex;
            width: fit-content;
            align-items: center;
            gap: 6px;
            height: 24px;
            margin-top: 6px;
            padding: 0 8px;
            border-radius: 12px;
            background: var(--chip-bg);
            border: 1px solid var(--chip-line);
            font-size: 10px;
            color: #b9b9bd;
            white-space: nowrap;
          }
          .chip-dot {
            width: 12.5px;
            height: 12.5px;
            border-radius: 6.25px;
            background: #2e2e30;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 6px;
            font-weight: 700;
            color: #d8d8da;
          }

          /* ---------------------------------------------------------- scroll chrome */
          .scrollbar {
            position: absolute;
            right: 3.3px;
            top: 145px;
            width: 2.7px;
            border-radius: 1.4px;
            background: rgba(235, 235, 245, 0.32);
            z-index: 20;
          }
          .chev-wrap {
            position: absolute;
            left: 0;
            right: 0;
            top: 738.7px;
            z-index: 25;
            display: flex;
            justify-content: center;
          }
          .chev {
            width: 36px;
            height: 36px;
            border-radius: 18px;
            background: #1c1c1e;
            border: 1px solid #2c2c2e;
            display: flex;
            align-items: center;
            justify-content: center;
          }

          /* ------------------------------------------------------------ suggestions */
          .suggests {
            position: absolute;
            left: 0;
            right: 0;
            bottom: 407.7px;
            z-index: 15;
          }
          .sug {
            height: 47px;
            display: flex;
            align-items: center;
            gap: 16px;
            padding-left: 27.7px;
            color: var(--ink);
            font-size: 16px;
          }
          .sug-ico {
            width: 15.7px;
            height: 15.7px;
            display: flex;
            align-items: center;
          }

          /* -------------------------------------------------------------- composer */
          .comp-scrim {
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 120px;
            z-index: 18;
            background: linear-gradient(to top, #000 12%, rgba(0, 0, 0, 0) 100%);
          }
          .composer {
            position: absolute;
            left: 12px;
            bottom: 38.3px;
            width: 378px;
            height: 48px;
            border-radius: 24px;
            background: rgba(255, 255, 255, 0.055);
            backdrop-filter: blur(22px);
            -webkit-backdrop-filter: blur(22px);
            z-index: 20;
            overflow: hidden;
          }
          .comp-text {
            position: absolute;
            top: 0;
            left: 16px;
            right: 16px;
            height: 44px;
            display: flex;
            align-items: center;
            color: var(--ink);
            font-size: 16px;
            line-height: 22px;
            white-space: pre;
          }
          .comp-ph {
            position: absolute;
            top: 0;
            left: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            color: var(--placeholder);
            font-size: 16px;
          }
          .typed {
            white-space: pre;
          }
          .typed .ch {
            opacity: 0;
          }
          .cursor-anchor {
            position: relative;
            display: inline-block;
            width: 0;
            height: 22px;
            vertical-align: -4px;
          }
          .cursor-anchor i {
            position: absolute;
            left: 1px;
            top: 0;
            width: 2px;
            height: 22px;
            background: var(--blue);
          }
          .comp-ctrls {
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 48px;
          }
          .comp-ctrls > * {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            display: flex;
            align-items: center;
            justify-content: center;
          }
          #cge-comp-plus {
            left: 15px;
          }
          .comp-mic {
            right: 60px;
          }
          .blue-btn {
            right: 8px;
            width: 32px;
            height: 32px;
            border-radius: 16px;
            background: var(--blue);
          }
          .blue-face {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
          }

          /* -------------------------------------------------------------- keyboard */
          .keyboard {
            position: absolute;
            left: 0;
            right: 0;
            top: 539px;
            height: 335px;
            background: var(--kb-bg);
            z-index: 22;
          }
          .predict {
            position: relative;
            height: 52px;
            display: flex;
            align-items: center;
          }
          .pd {
            flex: 1;
            position: relative;
            align-self: stretch;
            font-size: 17px;
            color: #e8e8ea;
            border-right: 1px solid rgba(235, 235, 245, 0.16);
          }
          .pdw {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
          }
          .pd:last-child {
            border-right: none;
          }
          .krow {
            position: absolute;
            left: 0;
            right: 0;
            height: 43px;
          }
          .key {
            position: absolute;
            top: 0;
            height: 43px;
            border-radius: 5px;
            background: var(--key);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 22.2px;
            font-weight: 400;
          }
          .key.dark {
            background: #2b2b2d;
          }
          .key.small {
            font-size: 16px;
            font-weight: 400;
          }
          .kb-bottom {
            position: absolute;
            left: 0;
            right: 0;
            top: 279.7px;
            height: 55px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 29px;
          }
        </style>
      </head>
      <body>
        <div
          data-hf-id="hf-ahdx"
          id="cge-root"
          data-composition-id="chatgpt-exchange"
          data-fps="60"
          data-start="0"
          data-duration="14.9"
          data-width="1080"
          data-height="1920"
        >
          <div data-hf-id="hf-tan6" class="stage">
            <div
              data-hf-id="hf-szt4"
              id="cge-scene"
              class="clip"
              data-start="0"
              data-duration="14.9"
              data-track-index="1"
            >
              <div data-hf-id="hf-ylue" class="screen" id="cge-screen"></div>
            </div>
          </div>
        </div>

        <script>
          const variables =
            window.__hyperframes && typeof window.__hyperframes.getVariables === "function"
              ? window.__hyperframes.getVariables()
              : {};
          const content = (id, fallback) =>
            typeof variables[id] === "string" && variables[id].trim() ? variables[id] : fallback;

          const CONFIG = {
            status: { clock: "1:29", clockLate: "1:30", net: "5G+", battery: 89, batteryLate: 88 },
            prompt: content("prompt", "Hey what's the best tool for ai avatars"),
            suggestions: [
              { icon: "slack", label: "Summarize my to-dos" },
              { icon: "gmail", label: "Draft follow-up emails" },
              { icon: "cal", label: "Prep me for upcoming meetings" },
            ],
            predict: {
              start: ["I", "The", "I'm"],
              mid: ["ai", "AI", "a"],
              end: ['"avatars"', "avatar sick", "avatar stressed"],
            },
            paragraphs: [
              content(
                "intro1",
                "It really depends on what you're trying to do, because “AI avatars” has split into a few different categories.",
              ),
              content("intro2", "For **most creators and marketers**, here's how I'd rank them today:"),
            ],
            table: {
              head: [
                content("tableHeadUse", "Use case"),
                content("tableHeadTool", "Best tool"),
                content("tableHeadWhy", "Why"),
              ],
              rows: [
                {
                  emoji: "🥇",
                  use: content("row1Use", "Overall realism"),
                  tool: content("row1Tool", "HeyGen"),
                  why: content(
                    "row1Why",
                    "Most natural facial expressions, lip sync, gestures, voice cloning and localization. Benchmark for talking head videos.",
                  ),
                  chip: content("row1Chip", "Official A.I Ranking"),
                },
                {
                  emoji: "🏢",
                  use: content("row2Use", "Enterprise/training"),
                  tool: content("row2Tool", "Synthesia"),
                  why: content(
                    "row2Why",
                    "Better collaboration, SCORM, compliance, team workflows; less creator-focused.",
                  ),
                  chip: content("row2Chip", "Official A.I Ranking"),
                },
                {
                  emoji: "📱",
                  use: content("row3Use", "Mobile UGC"),
                  tool: content("row3Tool", "Captions"),
                  why: content(
                    "row3Why",
                    "Extremely fast mobile workflow and social editing. Great for Reels creators.",
                  ),
                  chip: content("row3Chip", "Creator Stack"),
                },
                {
                  emoji: "💬",
                  use: content("row4Use", "Real-time conversations"),
                  tool: content("row4Tool", "Tavus"),
                  why: content("row4Why", "Interactive avatars that can hold live conversations."),
                  chip: content("row4Chip", "Creator Stack"),
                },
              ],
            },
          };

          /* Beat clock (seconds). Every tween hangs off these. */
          const T = {
            suggestsIn: 0.0,
            typeStart: 0.86,
            charBase: 0.05,
            spaceHold: 0.11,
            sendPad: 0.3, // stillness-before-climax between last keystroke and the tap
            sendReact: 0.03,
            streamLead: 0.6, // model "thinking" comma
            wordStep: 0.15,
            tableLead: 0.2,
            rowStep: 0.7,
            readbackDur: 1.1,
            tailHold: 0.7,
          };

          /* =========================================================== icon set */
          const svg = (b, d, w) =>
            `<svg viewBox="0 0 ${b} ${b}" width="${w || b}" height="${w || b}" fill="none">${d}</svg>`;
          const ICO = {
            bell: svg(
              20,
              `<path d="M4.2 15h11.6M10 3.2a4.3 4.3 0 0 1 4.3 4.3c0 3.4 1 5 1.5 5.6H4.2C4.7 12.5 5.7 10.9 5.7 7.5A4.3 4.3 0 0 1 10 3.2Z" stroke="#fff" stroke-width="1.5" stroke-linejoin="round"/><path d="M8.3 16.6a1.9 1.9 0 0 0 3.4 0" stroke="#fff" stroke-width="1.5"/><path d="M3 17L17 3" stroke="#fff" stroke-width="1.6"/>`,
              18,
            ),
            bars: svg(
              20,
              `<rect x="1" y="12.5" width="3" height="4.5" rx="1" fill="#fff"/><rect x="6" y="9.5" width="3" height="7.5" rx="1" fill="#fff"/><rect x="11" y="6.5" width="3" height="10.5" rx="1" fill="#fff"/><rect x="16" y="3.5" width="3" height="13.5" rx="1" fill="rgba(255,255,255,.32)"/>`,
              19,
            ),
            burger: svg(
              24,
              `<path d="M5 9.5h14M5 15h9" stroke="#fff" stroke-width="2.1" stroke-linecap="round"/>`,
              24,
            ),
            voiceCircle: svg(
              24,
              `<path d="M15.4 3.9a8.6 8.6 0 1 1-9.1 14.6" stroke="#fff" stroke-width="1.9" stroke-linecap="round"/><path d="M6.3 18.5 4 21.2l3.4.5" stroke="#fff" stroke-width="1.9" stroke-linecap="round" stroke-linejoin="round"/><path d="M13.6 8.4a4.1 4.1 0 1 0-3.3 6.9" stroke="#fff" stroke-width="1.9" stroke-linecap="round"/>`,
              23,
            ),
            compose: svg(
              24,
              `<path d="M4.5 15.5 15.2 4.8a2 2 0 0 1 2.9 2.9L7.4 18.4l-4 1 1-3.9Z" stroke="#fff" stroke-width="1.8" stroke-linejoin="round"/>`,
              21,
            ),
            dots: svg(
              24,
              `<circle cx="5" cy="12" r="1.9" fill="#fff"/><circle cx="12" cy="12" r="1.9" fill="#fff"/><circle cx="19" cy="12" r="1.9" fill="#fff"/>`,
              21,
            ),
            plus: svg(
              24,
              `<path d="M12 4.5v15M4.5 12h15" stroke="#fff" stroke-width="2.1" stroke-linecap="round"/>`,
              18,
            ),
            mic: svg(
              24,
              `<rect x="9" y="2.6" width="6" height="11.4" rx="3" stroke="#fff" stroke-width="1.8"/><path d="M5.5 11.4a6.5 6.5 0 0 0 13 0M12 18v3.2" stroke="#fff" stroke-width="1.8" stroke-linecap="round"/>`,
              17,
            ),
            wave: svg(
              24,
              `<rect x="4" y="9.5" width="2.4" height="5" rx="1.2" fill="#fff"/><rect x="8.6" y="6" width="2.4" height="12" rx="1.2" fill="#fff"/><rect x="13.2" y="8" width="2.4" height="8" rx="1.2" fill="#fff"/><rect x="17.8" y="10.5" width="2.4" height="3" rx="1.2" fill="#fff"/>`,
              19,
            ),
            arrowUp: svg(
              24,
              `<path d="M12 19V5.6M5.8 11.8 12 5.4l6.2 6.4" stroke="#000" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round"/>`,
              19,
            ),
            stop: svg(24, `<rect x="7" y="7" width="10" height="10" rx="2" fill="#000"/>`, 18),
            chevDown: svg(
              24,
              `<path d="M12 5v13M6.2 12.2 12 18.2l5.8-6" stroke="#fff" stroke-width="2.1" stroke-linecap="round" stroke-linejoin="round"/>`,
              18,
            ),
            shift: svg(
              24,
              `<path d="M12 4 4.5 12h4v7h7v-7h4L12 4Z" stroke="#fff" stroke-width="1.7" stroke-linejoin="round" fill="#fff"/>`,
              19,
            ),
            del: svg(
              24,
              `<path d="M8.4 5h11a1.6 1.6 0 0 1 1.6 1.6v10.8A1.6 1.6 0 0 1 19.4 19h-11L2.6 12 8.4 5Z" stroke="#fff" stroke-width="1.6" stroke-linejoin="round"/><path d="M11.4 9.6l5.2 4.8M16.6 9.6l-5.2 4.8" stroke="#fff" stroke-width="1.6" stroke-linecap="round"/>`,
              22,
            ),
            ret: svg(
              24,
              `<path d="M20 6v6.4H5.4M9.6 8.4 5 12.8l4.6 4.4" stroke="#fff" stroke-width="1.7" stroke-linecap="round" stroke-linejoin="round"/>`,
              21,
            ),
            emojiKey: svg(
              24,
              `<circle cx="12" cy="12" r="9" stroke="#fff" stroke-width="1.7"/><circle cx="9" cy="10" r="1.2" fill="#fff"/><circle cx="15" cy="10" r="1.2" fill="#fff"/><path d="M8 14.6a5 5 0 0 0 8 0" stroke="#fff" stroke-width="1.7" stroke-linecap="round"/>`,
              25,
            ),
            slack: svg(
              24,
              `<path d="M6.2 14.4a2 2 0 1 1-2 2v-2h2Z" fill="#e01e5a"/><path d="M7.3 14.4a2 2 0 0 1 4 0v5a2 2 0 1 1-4 0v-5Z" fill="#e01e5a"/><path d="M9.6 6.2a2 2 0 1 1 2-2v2h-2Z" fill="#36c5f0"/><path d="M9.6 7.3a2 2 0 0 1 0 4h-5a2 2 0 1 1 0-4h5Z" fill="#36c5f0"/><path d="M17.8 9.6a2 2 0 1 1 2 2h-2v-2Z" fill="#2eb67d"/><path d="M16.7 9.6a2 2 0 0 1-4 0v-5a2 2 0 1 1 4 0v5Z" fill="#2eb67d"/><path d="M14.4 17.8a2 2 0 1 1-2 2v-2h2Z" fill="#ecb22e"/><path d="M14.4 16.7a2 2 0 0 1 0-4h5a2 2 0 1 1 0 4h-5Z" fill="#ecb22e"/>`,
              16,
            ),
            gmail: svg(
              24,
              `<path d="M3 6.6 12 13l9-6.4V18a1 1 0 0 1-1 1h-3V11l-5 3.6L7 11v8H4a1 1 0 0 1-1-1V6.6Z" fill="#ea4335"/><path d="M17 11v8h3a1 1 0 0 0 1-1V6.6L17 9.5V11Z" fill="#34a853"/><path d="M3 6.6 7 9.5V19H4a1 1 0 0 1-1-1V6.6Z" fill="#4285f4"/><path d="M3 5.6A1.6 1.6 0 0 1 5.4 4.3L12 9l6.6-4.7A1.6 1.6 0 0 1 21 5.6v1L12 13 3 6.6v-.8Z" fill="#fbbc04"/>`,
              16,
            ),
            cal: svg(
              24,
              `<rect x="3" y="4" width="18" height="17" rx="3" fill="#1a73e8"/><rect x="3" y="4" width="18" height="4.5" rx="3" fill="#1967d2"/><text x="12" y="17.6" font-size="9" font-weight="700" fill="#fff" text-anchor="middle" font-family="Helvetica">31</text>`,
              16,
            ),
          };

          /* ============================================================== build */
          const screen = document.getElementById("cge-screen");
          const el = (cls, html, tag) => {
            const n = document.createElement(tag || "div");
            if (cls) n.className = cls;
            // Editable strings reach innerHTML; the template delivery gate rejects angle brackets.
            if (html != null) n.innerHTML = html;
            return n;
          };

          // --- status bar
          const sb = el("statusbar");
          sb.innerHTML =
            `<div class="sb-left"><div class="sb-clock sb-clock-box">` +
            `<span id="cge-clock-early">${CONFIG.status.clock}</span>` +
            `<span id="cge-clock-late">${CONFIG.status.clockLate}</span></div>${ICO.bell}</div>` +
            `<div class="sb-right">${ICO.bars}<div class="sb-net">${CONFIG.status.net}</div>` +
            `<div class="sb-batt"><span id="cge-batt-early">${CONFIG.status.battery}</span>` +
            `<span id="cge-batt-late">${CONFIG.status.batteryLate}</span></div>` +
            `<div class="sb-batt-cap"></div></div>`;

          // --- thread
          const port = el("scrollport");
          const thread = el("thread");
          thread.setAttribute("data-layout-allow-overflow", "true");
          thread.setAttribute("data-layout-allow-overlap", "true");
          thread.setAttribute("data-layout-allow-occlusion", "true");
          thread.id = "cge-thread";

          const bubble = el("bubble");
          bubble.id = "cge-bubble";
          bubble.textContent = CONFIG.prompt + "?";
          thread.appendChild(bubble);

          const answer = el("answer");
          answer.id = "cge-answer";
          thread.appendChild(answer);

          // paragraphs -> word spans (**bold** supported)
          const paraEls = [];
          CONFIG.paragraphs.forEach((txt) => {
            const p = el("para");
            const inner = el("para-inner");
            let bold = false;
            txt.split(/(\s+)/).forEach((tok) => {
              if (!tok) return;
              if (/^\s+$/.test(tok)) {
                inner.appendChild(document.createTextNode(tok));
                return;
              }
              let word = tok;
              let open = false;
              if (word.startsWith("**")) {
                bold = true;
                open = true;
                word = word.slice(2);
              }
              let close = false;
              if (word.includes("**")) {
                close = true;
                word = word.replace("**", "");
              }
              const s = el("w", null, "span");
              if (bold) s.style.fontWeight = "600";
              s.textContent = word;
              if (close) bold = false;
              void open;
              inner.appendChild(s);
            });
            p.appendChild(inner);
            answer.appendChild(p);
            paraEls.push({ p: p, inner: inner, words: [].slice.call(inner.querySelectorAll(".w")) });
          });

          // table
          const tbl = el("tbl");
          tbl.id = "cge-tbl";
          const headRow = el("tr");
          headRow.innerHTML =
            `<div class="td th c1">${CONFIG.table.head[0]}</div>` +
            `<div class="td th c2">${CONFIG.table.head[1]}</div>` +
            `<div class="td th c3">${CONFIG.table.head[2]}</div>`;
          const headRule = el("rule-head");
          headRule.id = "cge-head-rule";
          tbl.appendChild(headRow);
          tbl.appendChild(headRule);
          answer.appendChild(tbl);

          const rowEls = [];
          CONFIG.table.rows.forEach((r, i) => {
            const row = el("tr");
            row.id = "cge-row" + i;
            const whyWords = r.why
              .split(" ")
              .map((w) => `<span class="w">${w}</span>`)
              .join(" ");
            row.innerHTML =
              `<div class="td c1"><div class="use"><span class="emo">${r.emoji}</span>` +
              `<span class="w">${r.use}</span></div></div>` +
              `<div class="td c2"><span class="w">${r.tool}</span></div>` +
              `<div class="td c3">${whyWords}` +
              `<div class="chip"><span class="chip-dot">AI</span>${r.chip}</div></div>`;
            const rule = el("rule-row");
            rule.id = "cge-rule" + i;
            tbl.appendChild(row);
            tbl.appendChild(rule);
            rowEls.push({
              row: row,
              rule: rule,
              words: [].slice.call(row.querySelectorAll(".w")),
              emo: row.querySelector(".emo"),
              chip: row.querySelector(".chip"),
            });
          });

          port.appendChild(thread);

          // --- scroll chrome
          const sbar = el("scrollbar");
          sbar.id = "cge-scrollbar";
          const chevWrap = el("chev-wrap", `<div class="chev" id="cge-chev">${ICO.chevDown}</div>`);

          // --- suggestions
          const suggests = el("suggests");
          const sugEls = CONFIG.suggestions.map((s) => {
            const n = el("sug", `<div class="sug-ico">${ICO[s.icon]}</div><div>${s.label}</div>`);
            suggests.appendChild(n);
            return n;
          });

          // --- composer
          const composer = el("composer");
          composer.setAttribute("data-layout-allow-occlusion", "true");
          composer.setAttribute("data-layout-allow-overlap", "true");
          composer.id = "cge-composer";
          composer.innerHTML =
            `<div class="comp-text" id="cge-comp-text"><span class="typed" id="cge-typed"></span></div>` +
            `<div class="comp-ph" id="cge-comp-ph">Ask ChatGPT</div>` +
            `<div class="comp-ctrls"><div id="cge-comp-plus">${ICO.plus}</div>` +
            `<div class="comp-mic" id="cge-comp-mic">${ICO.mic}</div>` +
            `<div class="blue-btn" id="cge-blue-btn">` +
            `<div class="blue-face" id="cge-face-wave">${ICO.wave}</div>` +
            `<div class="blue-face" id="cge-face-send">${ICO.arrowUp}</div>` +
            `<div class="blue-face" id="cge-face-stop">${ICO.stop}</div></div></div>`;

          // one span per character, each followed by a zero-width caret slot. Hidden
          // characters still occupy their final space, so the caret needs no measuring.
          const typedEl = composer.querySelector("#cge-typed");
          const chEls = [];
          const curEls = [];
          const mkCursor = () => {
            const a = el("cursor-anchor", "<i></i>", "span");
            typedEl.appendChild(a);
            curEls.push(a);
          };
          mkCursor();
          CONFIG.prompt.split("").forEach((c) => {
            const sp = el("ch", c === " " ? "&nbsp;" : c, "span");
            typedEl.appendChild(sp);
            chEls.push(sp);
            mkCursor();
          });

          // --- keyboard
          const KB = { w: 33.44, gap: 6.03, inset: 6.67 };
          const keyboard = el("keyboard");
          keyboard.setAttribute("data-layout-allow-overflow", "true");
          keyboard.setAttribute("data-layout-allow-overlap", "true");
          keyboard.id = "cge-keyboard";
          const predict = el("predict");
          predict.id = "cge-predict";
          const PRED_STAGES = ["start", "mid", "end"];
          const pdEls = [0, 1, 2].map((col) => {
            const n = el("pd");
            const stages = PRED_STAGES.map((k) => {
              const w = el("pdw", CONFIG.predict[k][col]);
              n.appendChild(w);
              return w;
            });
            predict.appendChild(n);
            return { cell: n, stages: stages };
          });
          keyboard.appendChild(predict);

          const keyIndex = {};
          const mkKey = (row, label, x, w, cls) => {
            const k = el("key" + (cls ? " " + cls : ""), label);
            k.style.left = x + "px";
            k.style.width = w + "px";
            row.appendChild(k);
            if (/^[A-Z]$/.test(label)) keyIndex[label] = k;
            return k;
          };
          const rowsDef = [
            { y: 52, keys: "QWERTYUIOP".split(""), x0: KB.inset },
            { y: 106, keys: "ASDFGHJKL".split(""), x0: 26.33 },
            { y: 160, keys: "ZXCVBNM".split(""), x0: 65.67 },
          ];
          rowsDef.forEach((rd, ri) => {
            const row = el("krow");
            row.style.top = rd.y + "px";
            rd.keys.forEach((k, i) => mkKey(row, k, rd.x0 + i * (KB.w + KB.gap), KB.w));
            if (ri === 2) {
              mkKey(row, ICO.shift, KB.inset, 45.33, "dark");
              mkKey(row, ICO.del, 350, 45.67, "dark");
            }
            keyboard.appendChild(row);
          });
          const row4 = el("krow");
          row4.style.top = "214px";
          const kNum = mkKey(row4, "123", KB.inset, 92.67, "dark small");
          const kSpace = mkKey(row4, "", 105.33, 191.33);
          const kRet = mkKey(row4, ICO.ret, 302.67, 93, "dark");
          keyboard.appendChild(row4);
          keyboard.appendChild(el("kb-bottom", `<div>${ICO.emojiKey}</div><div>${ICO.mic}</div>`));
          void kNum;
          void kRet;

          // --- header (built last so it stacks above the thread)
          const hdrScrim = el("hdr-scrim");
          hdrScrim.setAttribute("data-layout-allow-occlusion", "true");
          hdrScrim.id = "cge-hdr-scrim";
          const header = el("header");
          header.innerHTML =
            `<div class="circle-btn hdr-left">${ICO.burger}</div>` +
            `<div class="seg" id="cge-seg"><div class="seg-item on">Chat</div><div class="seg-item">Work</div></div>` +
            `<div class="hdr-right" id="cge-hdr-right">` +
            `<div class="hdr-right-face" id="cge-hdr-voice">${ICO.voiceCircle}</div>` +
            `<div class="hdr-right-face" id="cge-hdr-actions">${ICO.compose}${ICO.dots}</div></div>`;

          const statusPlate = el("status-plate");
          statusPlate.setAttribute("data-layout-allow-occlusion", "true");
          const compScrim = el("comp-scrim");
          compScrim.setAttribute("data-layout-allow-occlusion", "true");
          [
            port,
            sbar,
            chevWrap,
            suggests,
            compScrim,
            composer,
            keyboard,
            hdrScrim,
            statusPlate,
            header,
            sb,
          ].forEach((n) => screen.appendChild(n));

          /* ============================================================ measure
             All layout reads happen here, once, before any state is set. Widths
             come off getBoundingClientRect (sub-pixel) divided by --scale; block
             offsets come off offsetTop, which is unscaled. Deterministic: the same
             layout every load, so every seek resolves identically.               */
          // paragraph line grouping + heights
          const LH = 25.667;
          paraEls.forEach((pe) => {
            pe.height = pe.inner.offsetHeight;
            const tops = pe.words.map((w) => w.offsetTop);
            const uniq = [];
            tops.forEach((t) => {
              if (!uniq.length || t - uniq[uniq.length - 1] > 4) uniq.push(t);
            });
            pe.lineOf = tops.map((t) => {
              let li = 0;
              uniq.forEach((u, i) => {
                if (Math.abs(t - u) <= 4) li = i;
              });
              return li;
            });
            pe.lineHeights = uniq.map((u, i) => Math.min(pe.height, (i + 1) * LH + 1));
          });

          const headRowH = headRow.offsetHeight;
          rowEls.forEach((re) => (re.h = re.row.offsetHeight));

          // Scroll anchors: keep the newest revealed element just above the composer.
          // Read here, in the natural layout — by timeline-build time every paragraph
          // and row has been collapsed to height 0 and offsetTop/Height would lie.
          const ANCHOR = 772;
          const anchorOf = (node) => Math.min(0, ANCHOR - (node.offsetTop + node.offsetHeight));
          paraEls.forEach((pe) => (pe.anchor = anchorOf(pe.p)));
          rowEls.forEach((re) => (re.anchor = anchorOf(re.row)));
          const Y_FINAL = 37 - bubble.offsetTop; // IMG_0937: bubble top rests at y=37

          /* ====================================================== initial state */
          gsap.set(composer, { y: -309, x: 0, width: 378, height: 48 }); // keyboard-up rest
          gsap.set([answer], { autoAlpha: 1 });
          gsap.set(
            paraEls.map((p) => p.p),
            { height: 0 },
          );
          paraEls.forEach((pe) => gsap.set(pe.words, { opacity: 0 }));
          gsap.set([headRow, headRule], { height: 0, opacity: 0 });
          rowEls.forEach((re) => {
            gsap.set(re.row, { height: 0 });
            gsap.set(re.rule, { height: 0 });
            gsap.set(re.words, { opacity: 0 });
            gsap.set([re.emo, re.chip], { opacity: 0 });
          });
          gsap.set(bubble, { autoAlpha: 0 });
          gsap.set(thread, { y: 0 });
          gsap.set(sbar, { autoAlpha: 0, y: 60, height: 250 });
          gsap.set(chevWrap.firstChild, { autoAlpha: 0, y: 10 });
          gsap.set(sugEls, { autoAlpha: 0, y: 14 });
          gsap.set(chEls, { opacity: 0 });
          gsap.set(curEls, { autoAlpha: 0 });
          gsap.set(document.getElementById("cge-comp-ph"), { autoAlpha: 1 });
          gsap.set(document.getElementById("cge-face-send"), { autoAlpha: 0, scale: 0.6 });
          gsap.set(document.getElementById("cge-face-stop"), { autoAlpha: 0, scale: 0.6 });
          gsap.set(document.getElementById("cge-hdr-actions"), { autoAlpha: 0 });
          gsap.set(document.getElementById("cge-hdr-right"), { width: 44 });
          gsap.set(document.getElementById("cge-seg"), { autoAlpha: 1, scale: 1 });
          gsap.set(hdrScrim, { autoAlpha: 1 });
          gsap.set(keyboard, { y: 0 });
          pdEls.forEach((pd) => {
            gsap.set(pd.stages[0], { autoAlpha: 1 });
            gsap.set([pd.stages[1], pd.stages[2]], { autoAlpha: 0 });
          });
          gsap.set(document.getElementById("cge-clock-late"), { autoAlpha: 0 });
          gsap.set(document.getElementById("cge-batt-late"), { autoAlpha: 0 });

          /* ============================================================ timeline */
          window.__timelines = window.__timelines || {};
          const tl = gsap.timeline({ paused: true });

          /* ---- 1. suggestions cascade in (waterfall entry, weight-ordered) */
          sugEls.forEach((n, i) => {
            tl.to(
              n,
              { autoAlpha: 1, y: 0, duration: 0.42, ease: "power3.out" },
              T.suggestsIn + i * 0.09,
            );
          });

          /* ---- 2. typing. Each keystroke IS the cause: key flash -> width step. */
          const t0 = T.typeStart;
          const chars = CONFIG.prompt.split("");
          const charT = [];
          let t = t0;
          chars.forEach((c, i) => {
            charT.push(t);
            t += c === " " ? T.charBase + T.spaceHold : T.charBase;
            void i;
          });
          const typeEnd = t;

          // composer grows to two rows on the first keystroke
          tl.to(composer, { height: 92, duration: 0.24, ease: "power2.out" }, t0 - 0.02);
          tl.to(document.getElementById("cge-comp-ph"), { autoAlpha: 0, duration: 0.12 }, t0 - 0.02);
          tl.to(curEls[0], { autoAlpha: 1, duration: 0.01 }, t0 - 0.02);
          // suggestions clear — caused by the first keystroke
          sugEls.forEach((n, i) => {
            tl.to(n, { autoAlpha: 0, y: 10, duration: 0.2, ease: "power2.in" }, t0 - 0.02 + i * 0.04);
          });
          // voice waveform -> send arrow
          tl.to(
            document.getElementById("cge-face-wave"),
            { autoAlpha: 0, scale: 0.6, duration: 0.14 },
            t0,
          );
          tl.to(
            document.getElementById("cge-face-send"),
            { autoAlpha: 1, scale: 1, duration: 0.24, ease: "back.out(1.6)" },
            t0 + 0.04,
          );

          chars.forEach((c, i) => {
            tl.to(chEls[i], { opacity: 1, duration: 0.01 }, charT[i]);
            tl.to(curEls[i], { autoAlpha: 0, duration: 0.01 }, charT[i]);
            tl.to(curEls[i + 1], { autoAlpha: 1, duration: 0.01 }, charT[i]);
            const k = keyIndex[c.toUpperCase()];
            const target = c === " " ? kSpace : k;
            if (target) {
              tl.to(target, { backgroundColor: "#5f5f5f", duration: 0.04 }, charT[i] - 0.03);
              tl.to(
                target,
                { backgroundColor: c === " " ? "#3c3c3c" : "#3c3c3c", duration: 0.09 },
                charT[i] + 0.02,
              );
            }
          });

          // caret blink (finite, deterministic)
          const blinkFrom = t0 + 0.1;
          const blinks = Math.floor((typeEnd + T.sendPad - blinkFrom) / 1.06);
          const lastCur = curEls[curEls.length - 1];
          for (let i = 0; i < blinks; i++) {
            const off = blinkFrom + i * 1.06 + 0.53;
            const on = blinkFrom + i * 1.06 + 1.06;
            if (off > typeEnd) tl.to(lastCur, { autoAlpha: 0, duration: 0.02 }, off);
            if (on > typeEnd) tl.to(lastCur, { autoAlpha: 1, duration: 0.02 }, on);
          }

          // predictive row swaps at word boundaries
          const swapPredict = (at, stage) => {
            pdEls.forEach((pd) => {
              tl.to(pd.stages[stage - 1], { autoAlpha: 0, duration: 0.06 }, at);
              tl.to(pd.stages[stage], { autoAlpha: 1, duration: 0.08 }, at + 0.06);
            });
          };
          swapPredict(charT[CONFIG.prompt.indexOf(" ai ") + 1], 1);
          swapPredict(charT[CONFIG.prompt.length - 1], 2);

          /* ---- 3. send. Tap ignites: bubble flight + keyboard down + header morph */
          const tSend = typeEnd + T.sendPad;
          const blueBtn = document.getElementById("cge-blue-btn");
          tl.to(blueBtn, { scale: 0.86, duration: 0.06, ease: "power2.out" }, tSend);
          tl.to(blueBtn, { scale: 1, duration: 0.18, ease: "power2.out" }, tSend + 0.06);

          const tGo = tSend + T.sendReact;
          // composer empties and collapses; keyboard leaves downward
          tl.to(chEls, { opacity: 0, duration: 0.01 }, tGo);
          tl.to(curEls, { autoAlpha: 0, duration: 0.01 }, tGo);
          tl.to(composer, { height: 48, width: 326, duration: 0.3, ease: "power2.out" }, tGo);
          tl.to(composer, { y: 0, x: 26, duration: 0.32, ease: "power2.out" }, tGo);
          tl.to(document.getElementById("cge-comp-ph"), { autoAlpha: 1, duration: 0.2 }, tGo + 0.12);
          tl.to(keyboard, { y: 340, duration: 0.3, ease: "power2.out" }, tGo);
          tl.to(document.getElementById("cge-face-send"), { autoAlpha: 0, duration: 0.12 }, tGo + 0.28);
          tl.to(
            document.getElementById("cge-face-stop"),
            { autoAlpha: 1, scale: 1, duration: 0.2, ease: "power2.out" },
            tGo + 0.34,
          );

          // header: segmented control out, right control widens into the actions pill
          tl.to(document.getElementById("cge-seg"), { autoAlpha: 0, scale: 0.92, duration: 0.16 }, tGo);
          tl.to(document.getElementById("cge-hdr-voice"), { autoAlpha: 0, duration: 0.12 }, tGo + 0.02);
          tl.to(
            document.getElementById("cge-hdr-right"),
            { width: 108, duration: 0.26, ease: "power2.out" },
            tGo + 0.06,
          );
          tl.to(
            document.getElementById("cge-hdr-actions"),
            { autoAlpha: 1, duration: 0.18 },
            tGo + 0.16,
          );

          // the bubble: born at the composer's text position, lands in its thread slot
          const bubbleTop = bubble.offsetTop + thread.offsetTop; // 128
          const dy = 526.7 - 48 + 10 - bubbleTop; // keyboard-up composer text row -> slot
          tl.fromTo(
            bubble,
            { autoAlpha: 0, y: dy, scale: 0.94, transformOrigin: "100% 50%" },
            { autoAlpha: 1, y: 0, scale: 1, duration: 0.34, ease: "power3.out" },
            tGo + 0.02,
          );

          /* ---- 4. stream. Words land in reading order; the box grows by the line. */
          let tw = tGo + 0.34 + T.streamLead;
          const scrollTo = (target, at, dur) =>
            tl.to(thread, { y: target, duration: dur || 0.5, ease: "power2.out" }, at);

          paraEls.forEach((pe, pi) => {
            let lastLine = -1;
            pe.words.forEach((w, wi) => {
              const li = pe.lineOf[wi];
              if (li !== lastLine) {
                tl.to(pe.p, { height: pe.lineHeights[li], duration: 0.16, ease: "power2.out" }, tw);
                lastLine = li;
              }
              tl.to(w, { opacity: 1, duration: 0.1 }, tw);
              tw += T.wordStep;
            });
            scrollTo(pe.anchor, tw - T.wordStep * 2, 0.6);
            if (pi === 0) tw += 0.12;
          });

          /* ---- 5. the table assembles, row by row */
          tw += T.tableLead;
          tl.to(
            [headRow, headRule],
            { height: (i) => (i === 0 ? headRowH : 2), opacity: 1, duration: 0.2, ease: "power2.out" },
            tw,
          );
          tw += 0.34;

          rowEls.forEach((re) => {
            tl.to(re.row, { height: re.h, duration: 0.22, ease: "power2.out" }, tw);
            tl.to(re.emo, { opacity: 1, duration: 0.14 }, tw + 0.04);
            re.words.forEach((w, wi) => {
              tl.to(w, { opacity: 1, duration: 0.09 }, tw + 0.08 + wi * 0.028);
            });
            tl.to(re.chip, { opacity: 1, duration: 0.2, ease: "power2.out" }, tw + 0.42);
            tl.to(re.rule, { height: 2, duration: 0.12 }, tw + 0.2);
            scrollTo(re.anchor, tw + 0.1, 0.72);
            tw += T.rowStep;
          });

          /* ---- 6. streaming ends, then the read-back scroll lands on the hero frame */
          tl.to(document.getElementById("cge-face-stop"), { autoAlpha: 0, duration: 0.14 }, tw);
          tl.to(
            document.getElementById("cge-face-wave"),
            { autoAlpha: 1, scale: 1, duration: 0.22, ease: "power2.out" },
            tw + 0.06,
          );

          const tRead = tw + 0.24;
          tl.to(sbar, { autoAlpha: 1, duration: 0.14 }, tRead);
          // the minute rolls over between the source frames — keep that
          tl.to(
            document.getElementById("cge-clock-early"),
            { autoAlpha: 0, duration: 0.01 },
            tRead - 0.5,
          );
          tl.to(
            document.getElementById("cge-clock-late"),
            { autoAlpha: 1, duration: 0.01 },
            tRead - 0.5,
          );
          tl.to(
            document.getElementById("cge-batt-early"),
            { autoAlpha: 0, duration: 0.01 },
            tRead - 0.5,
          );
          tl.to(
            document.getElementById("cge-batt-late"),
            { autoAlpha: 1, duration: 0.01 },
            tRead - 0.5,
          );
          tl.to(thread, { y: Y_FINAL, duration: T.readbackDur, ease: "power2.inOut" }, tRead);
          tl.to(sbar, { y: 0, duration: T.readbackDur, ease: "power2.inOut" }, tRead);
          tl.to(
            chevWrap.firstChild,
            { autoAlpha: 1, y: 0, duration: 0.3, ease: "back.out(1.5)" },
            tRead + T.readbackDur - 0.35,
          );

          /* ---- caret-following scroll in the composer.
             `prompt` is an editable slot, but `.comp-text` is a fixed-width single line with
             `white-space: pre` inside a composer that clips, and the packaged prompt already reaches
             the mic. A longer one therefore slides under the mic and the send button and loses its
             tail, with the caret hidden behind them -- the remix looks like it typed into nowhere.
             A real single-line input scrolls its text left to keep the caret in view; this does the
             same, on the very times the reveal already uses. Shrinking the type instead was the other
             option and it is worse: it would shrink the packaged prompt too, since that prompt has no
             headroom, and it still cannot absorb a prompt twice as long without becoming unreadable.
             A prompt that fits emits no keyframes at all, so the packaged composition is untouched. */
          const compTextEl = composer.querySelector("#cge-comp-text");
          // The obstacle is the opaque round button, not the mic: the packaged prompt's caret already
          // sits 2px past the mic's left edge, so measuring to the mic would scroll the packaged
          // composition. The caret has 35px of clearance to the button, which is the real boundary.
          const compStopEl = composer.querySelector("#cge-blue-btn");
          const CARET_PAD = 8;
          // The rebuild below has to discard exactly what the previous pass added, and `tl.to()`
          // returns the TIMELINE, not the tween it just created -- so collecting those return values
          // and killing them on the second pass kills the master timeline, and the composition stops
          // dead. It only bites when there are keyframes to discard, i.e. an overflowing prompt: the
          // exact remix this scroll exists for, and why a packaged-defaults render never saw it.
          // One nested child timeline is a real object that can be killed and replaced, and killing
          // it cannot reach `tl`.
          let caretTl = null;
          const layoutCaretScroll = () => {
            if (caretTl) {
              caretTl.kill();
              caretTl = null;
              // Only ever touch typedEl when there was scrolling to undo. A zero translate — or even
              // a clearProps on an untouched element — stamps and removes a transform, which changes
              // how the text rasterizes and makes the packaged render differ for no reason.
              gsap.set(typedEl, { clearProps: "transform" });
            }
            if (!compTextEl || !compStopEl) return;
            // Rects live in the scaled .screen space while offsets are layout px, so convert with the
            // element's own ratio rather than reading --scale -- this then survives a change to it.
            const box = compTextEl.getBoundingClientRect();
            const ratio = compTextEl.offsetWidth ? box.width / compTextEl.offsetWidth : 1;
            const limit =
              (compStopEl.getBoundingClientRect().left - box.left) / (ratio || 1) - CARET_PAD;
            if (!(limit > 0)) return;
            // Collect the steps first, so a prompt that fits leaves typedEl alone entirely.
            const steps = [];
            let shift = 0;
            chars.forEach((c, i) => {
              const caret = curEls[i + 1];
              if (!caret) return;
              const want = Math.max(0, caret.offsetLeft - limit);
              if (want > shift + 0.5) {
                shift = want;
                steps.push([charT[i], -shift]);
              }
            });
            if (!steps.length) return;
            // Children sit at the same absolute times as before, and the nest is added at 0, so the
            // nested timeline's local clock is the master's -- the motion is unchanged.
            caretTl = gsap.timeline();
            steps.forEach(([at, x]) => {
              caretTl.to(typedEl, { x, duration: 0.08, ease: "none" }, at);
            });
            // Back to the start when the composer empties, so the collapse animates from x=0.
            caretTl.to(typedEl, { x: 0, duration: 0.01 }, tGo);
            tl.add(caretTl, 0);
          };
          layoutCaretScroll();
          // This composition builds its timeline once, so the first pass measures whatever font was
          // live then. Re-measure when the embedded faces are ready.
          document.fonts.ready.then(layoutCaretScroll);

          window.__timelines["chatgpt-exchange"] = tl;
        </script>
      </body>
    </html>
    ```
  </CatalogSlot>

  <CatalogSlot slot="install">
    <InstallCommand command="npx hyperframes add chatgpt-exchange" item="chatgpt-exchange" />

    That writes `compositions/chatgpt-exchange.html`, plus 5 supporting files under `assets/fonts/`.
  </CatalogSlot>

  <CatalogSlot slot="docs">
    ## Add it to your video

    It runs for 14.9 seconds at 1080×1920. Paste this into your composition:

    ```html index.html theme={null}
    <div
      data-composition-id="chatgpt-exchange"
      data-composition-src="compositions/chatgpt-exchange.html"
      data-start="0"
      data-duration="14.9"
      data-track-index="1"
      data-width="1080"
      data-height="1920"
    ></div>
    ```

    Move it in time with `data-start`. Put it on a different timeline row with
    `data-track-index`. See [data attributes](/concepts/data-attributes) for the rest.

    Tagged `showcase` `mock-ui` `ai` `chat` `vertical` `ad-template`.

    Created by Jake Moran.

    ## Related topics

    * [Browse the complete Catalog](/catalog)
    * [Add assets and Catalog items in Studio](/studio/assets-and-blocks)
    * [Build a richer composition](/go-further)
  </CatalogSlot>
</CatalogDetail>