> ## Documentation Index
> Fetch the complete documentation index at: https://hyperframes.heygen.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Split Tilt Cards

> Two equal-weight cards arrive from opposite wings with mirrored rotateY book-open tilts under one shared perspective, pill badges spring-pop at each inner edge, and the pair holds with a barely-there phase-opposed idle float. Card bodies are content slots with token skeleton defaults.

export const InstallCommand = ({command}) => {
  const [copied, setCopied] = React.useState(false);
  const copy = async () => {
    try {
      if (navigator.clipboard && window.isSecureContext) {
        await navigator.clipboard.writeText(command);
      } else {
        const previous = document.activeElement;
        const scratch = document.createElement("textarea");
        scratch.value = command;
        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">
        {command}
      </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>;
};

<iframe className="w-full aspect-video rounded-xl border-0 bg-zinc-100 dark:bg-zinc-800" title="split-tilt-cards preview" loading="lazy" srcDoc={`<!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@0.7/dist/hyperframes-player.global.js"><\/script></head><body><script>fetch("/public/catalog/components/split-tilt-cards.json").then(function(r){return r.json()}).then(function(d){var p=document.createElement("hyperframes-player");p.setAttribute("srcdoc",d.html);p.setAttribute("controls","");p.setAttribute("autoplay","");p.setAttribute("loop","");p.setAttribute("muted","");p.setAttribute("poster","https://static.heygen.ai/hyperframes-oss/docs/images/catalog/components/split-tilt-cards.png");document.body.appendChild(p)});<\/script></body></html>`} />

## Install

<InstallCommand command="npx hyperframes add split-tilt-cards" />

That writes one file: `compositions/components/split-tilt-cards.html`.

## Paste it into your composition

Open `compositions/components/split-tilt-cards.html` and copy what is inside into your own composition.

A component has no size or duration of its own. It takes both from the composition
you paste it into.

## Variables

Every one of these has a default, so the piece works untouched. Set the ones you
want to change on the element:

| Variable  | Default  | Accepts                   | What it does                                                                 |
| --------- | -------- | ------------------------- | ---------------------------------------------------------------------------- |
| `label_a` | `Before` | string                    | Mono header on the left card. Blank hides it.                                |
| `label_b` | `After`  | string                    | Mono header on the right card. Blank hides it.                               |
| `badge_a` | `v1`     | string                    | Pill badge that spring-pops at the left card inner edge. Blank disables it.  |
| `badge_b` | `v2`     | string                    | Pill badge that spring-pops at the right card inner edge. Blank disables it. |
| `accent`  | `green`  | `green`, `blue`, `violet` | Right-card tint, right badge, and right ambient glow color.                  |
| `exit`    | `none`   | `none`, `fade`, `up`      | Outgoing transition. None holds the final spread.                            |

Set them with `data-variable-values` on the element that mounts it. These are the
defaults, so this behaves exactly like the preview above until you change one:

```html wrap theme={null}
<div
  data-composition-id="split-tilt-cards"
  data-composition-src="compositions/components/split-tilt-cards.html"
  data-variable-values='{"label_a":"Before","label_b":"After","badge_a":"v1","badge_b":"v2","accent":"green","exit":"none"}'
></div>
```

## Source

<Accordion title={`split-tilt-cards.html`}>
  ```html theme={null}
  <!doctype html>
  <!--
    split-tilt-cards: HyperFrames video primitive (layout / compare / holdable)

    Concept: two equal-weight cards arrive from opposite wings, each carrying a
    mirrored 3D rotateY book-open tilt (+18deg left, -18deg right) under one
    shared stage perspective, with box-shadows falling outward from the tilt.
    A pill badge spring-pops at each card's inner edge (left then right, the
    one sanctioned overshoot, kept small), then the pair holds with a
    barely-there phase-opposed idle float and settles dead still. Card bodies
    are content slots with token skeleton defaults.

    Realizes the comparison-split blueprint's signature move as its own unit
    and resolves the blueprint's name collision (Wave J2, J2-10).

    Slots (see README.md for a worked example):
      - [data-slot="card-a"]: left card body. Replace the children of this
        element in your installed copy. Default: a muted token wireframe.
      - [data-slot="card-b"]: right card body. Same mechanism. Default: an
        accent-tinted version of the wireframe.
      Direct img/video children of a slot are sized to cover the slot area.

    Variables (declared in data-composition-variables below):
      - label_a (string, default "Before"): mono header on the left card.
        Empty hides it.
      - label_b (string, default "After"): mono header on the right card.
        Empty hides it.
      - badge_a (string, default "v1"): inner-edge pill on the left card.
        Empty disables that badge pop.
      - badge_b (string, default "v2"): inner-edge pill on the right card.
        Empty disables that badge pop.
      - accent (green | blue | violet, default green): right-card tint, right
        badge, and right ambient glow. green maps to --brand, blue to
        --accent, violet to --accent-2.
      - exit (none | fade | up, default none): outgoing transition. none holds
        the final frame (frame roots own transitions; holds end films).

    Envelope (fixed IN/OUT, elastic HOLD only, never gsap.timeScale()):
      IN       = 2.15s: left card lands 0 to 1.1s, right card 0.2 to 1.3s,
                 badge A pops at 1.45s, badge B at 1.75s (+0.40s spring)
      HOLD     = elastic = max(0, D - (IN + OUT)); whole 2.0s idle-float
                 cycles fit inside HOLD minus a 0.30s closing stillness; each
                 cycle starts and ends at rest (explicit tweens, no
                 repeat/yoyo), left and right phase-opposed
      OUT      = 0.50s when exit is fade or up, 0 when exit is none
      If D < IN + OUT, IN and OUT scale down together so IN + OUT == D.

    Sync points (fixed offsets inside IN, never in elastic HOLD): badge-pop-a
    lands at 1.85s, badge-pop-b at 2.15s.

    Sound cue: dispatches a bubbling `hf:sfx` CustomEvent with id
    "badge-pop-soft" at each badge landing. This primitive never plays audio.

    Mount contract: MOUNTABLE SUB-COMPOSITION. The runtime clones only
    <template> contents; #root fills the host box (inset:0, container-type:
    size), has no data-width/data-height, and registers one paused timeline
    under the literal "split-tilt-cards" key (mount flattening strips
    data-composition-id from the live root). Variables come from
    window.__hyperframes.getVariables().
  -->
  <html
    lang="en"
    data-composition-id="split-tilt-cards"
    data-composition-duration="4.5"
    data-composition-variables='[
      { "id": "label_a", "type": "string", "role": "content", "label": "Left label", "description": "Mono header on the left card. Blank hides it.", "default": "Before" },
      { "id": "label_b", "type": "string", "role": "content", "label": "Right label", "description": "Mono header on the right card. Blank hides it.", "default": "After" },
      { "id": "badge_a", "type": "string", "role": "content", "label": "Left badge", "description": "Pill badge that spring-pops at the left card inner edge. Blank disables it.", "default": "v1" },
      { "id": "badge_b", "type": "string", "role": "content", "label": "Right badge", "description": "Pill badge that spring-pops at the right card inner edge. Blank disables it.", "default": "v2" },
      { "id": "accent", "type": "enum", "role": "style", "label": "Accent", "description": "Right-card tint, right badge, and right ambient glow color.", "default": "green", "options": [{ "value": "green", "label": "Green" }, { "value": "blue", "label": "Blue" }, { "value": "violet", "label": "Violet" }] },
      { "id": "exit", "type": "enum", "role": "timing", "label": "Exit", "description": "Outgoing transition. None holds the final spread.", "default": "none", "options": [{ "value": "none", "label": "None" }, { "value": "fade", "label": "Fade" }, { "value": "up", "label": "Up" }] }
    ]'
  >
    <head>
      <meta charset="UTF-8" />
      <title>Split Tilt Cards</title>
    </head>
    <body>
      <template>
        <div id="root" data-composition-id="split-tilt-cards" data-duration="4.5" data-fps="30">
          <style>
            *,
            *::before,
            *::after {
              box-sizing: border-box;
            }

            /* Root fills the host-owned box. Internal measurements use cqw/cqh
               and every painted color comes from a contract token. */
            #root {
              position: absolute;
              inset: 0;
              container-type: size;
              isolation: isolate;
              overflow: hidden;
              background: var(--bg, #0b1016);
              color: var(--fg, #f8fafc);
              font-family: var(--font-body, Inter, system-ui, sans-serif);
              pointer-events: none;
            }

            .stc-clip {
              position: absolute;
              inset: 0;
              overflow: hidden;
            }

            /* Two faint ambient side glows: each wing owns a color identity
               across the 50% symmetry axis. Static by design. */
            .stc-clip::before,
            .stc-clip::after {
              content: "";
              position: absolute;
              top: 14cqh;
              width: 52cqw;
              height: 72cqh;
              border-radius: 50%;
              filter: blur(6cqmin);
              pointer-events: none;
            }

            .stc-clip::before {
              left: 2cqw;
              background: radial-gradient(
                ellipse at 50% 50%,
                color-mix(in srgb, var(--muted, #94a3b8) 11%, transparent) 0%,
                transparent 70%
              );
            }

            .stc-clip::after {
              right: 2cqw;
              background: radial-gradient(
                ellipse at 50% 50%,
                color-mix(in srgb, var(--stc-accent, #22c55e) 13%, transparent) 0%,
                transparent 70%
              );
            }

            /* One shared perspective so both tilts converge on the same
               vanishing point; wings and floats preserve 3D so the card
               rotateY reads through their own gsap transforms. */
            .stc-stage {
              position: absolute;
              inset: 0;
              display: grid;
              grid-template-columns: 1fr 1fr;
              gap: var(--space-3, 5cqw);
              align-items: center;
              justify-items: center;
              padding: 0 8cqw;
              perspective: 120cqw;
            }

            /* No opacity (or other grouping property) may ever land on the
               wing/float/stage chain: it forces transform-style flat and
               squashes the card rotateY. Fades ride the cards and the clip. */
            .stc-wing {
              position: relative;
              width: 100%;
              max-width: 38cqw;
              height: 58cqh;
              transform-style: preserve-3d;
              will-change: transform;
            }

            .stc-float {
              position: absolute;
              inset: 0;
              transform-style: preserve-3d;
              will-change: transform;
            }

            .stc-card {
              position: absolute;
              inset: 0;
              display: flex;
              flex-direction: column;
              overflow: hidden;
              padding: var(--space-3, 3.6cqh) var(--space-3, 2.4cqw);
              border: 0.16cqw solid var(--border, #334155);
              border-radius: var(--radius, 2.4cqmin);
              background: color-mix(in srgb, var(--surface, #172033) 90%, var(--bg, #0b1016));
              will-change: opacity;
            }

            /* Static book-open tilts: +18deg left, -18deg right, with the
               box-shadow falling outward from the tilt (left shadow right,
               right shadow left). The tilt is carried, never tweened. */
            .stc-card-a {
              transform: rotateY(18deg);
              box-shadow: 2.4cqw 3cqh 7cqh color-mix(in srgb, var(--bg, #0b1016) 52%, transparent);
            }

            .stc-card-b {
              transform: rotateY(-18deg);
              border-color: color-mix(
                in srgb,
                var(--stc-accent, #22c55e) 46%,
                var(--border, #334155)
              );
              background: color-mix(in srgb, var(--surface, #172033) 88%, var(--stc-accent, #22c55e));
              box-shadow: -2.4cqw 3cqh 7cqh color-mix(in srgb, var(--bg, #0b1016) 52%, transparent);
            }

            .stc-label {
              flex: 0 0 auto;
              margin-bottom: var(--space-2, 2.4cqh);
              color: var(--muted, #94a3b8);
              font-family: var(--font-mono, ui-monospace, "SF Mono", Menlo, Consolas, monospace);
              font-size: min(2.1cqw, 3.4cqh);
              font-weight: 600;
              letter-spacing: 0.12em;
              line-height: 1;
              text-transform: uppercase;
              white-space: nowrap;
            }

            .stc-card-b .stc-label {
              color: color-mix(in srgb, var(--stc-accent, #22c55e) 72%, var(--fg, #f8fafc));
            }

            .stc-label:empty {
              display: none;
            }

            .stc-slot {
              position: relative;
              flex: 1 1 auto;
              min-height: 0;
              overflow: hidden;
              border-radius: calc(var(--radius, 2.4cqmin) * 0.6);
            }

            /* Caller-supplied media covers its slot edge to edge. */
            .stc-slot > img,
            .stc-slot > video {
              position: absolute;
              inset: 0;
              width: 100%;
              height: 100%;
              object-fit: cover;
            }

            /* Token-styled default slot content: a wireframe that reads muted
               on the left card and accent-tinted on the right. Callers
               replacing slot children never see any of this. */
            .stc-default {
              position: absolute;
              inset: 0;
              display: flex;
              flex-direction: column;
              justify-content: center;
              padding: var(--space-2, 2cqh) var(--space-1, 1cqw);
            }

            .stc-bar {
              width: 42%;
              height: 4cqh;
              margin-bottom: var(--space-2, 2.6cqh);
              border-radius: 1.2cqh;
              background: var(--muted, #94a3b8);
              opacity: 0.5;
            }

            .stc-line {
              height: 2.2cqh;
              margin-bottom: var(--space-1, 1.8cqh);
              border-radius: 1.1cqh;
              background: var(--muted, #94a3b8);
              opacity: 0.38;
            }

            .stc-line:nth-of-type(2) {
              width: 88%;
            }

            .stc-line:nth-of-type(3) {
              width: 64%;
            }

            .stc-line:nth-of-type(4) {
              width: 42%;
            }

            .stc-card-b .stc-bar {
              background: var(--stc-accent, #22c55e);
              opacity: 0.9;
            }

            .stc-card-b .stc-line {
              background: color-mix(in srgb, var(--stc-accent, #22c55e) 62%, var(--fg, #f8fafc));
              opacity: 0.66;
            }

            /* Badge positioners own the inner-edge placement (CSS translate);
               gsap scales only the inner pill, so the two transforms never
               collide on one element. */
            .stc-badge-pos {
              position: absolute;
              top: 50%;
              z-index: 3;
              display: flex;
            }

            .stc-badge-pos-a {
              right: 0;
              transform: translate(32%, -50%);
            }

            .stc-badge-pos-b {
              left: 0;
              transform: translate(-32%, -50%);
            }

            .stc-badge {
              padding: var(--space-1, 1.4cqh) var(--space-2, 1.8cqw);
              border: 0.16cqw solid var(--border, #334155);
              border-radius: 999cqw;
              background: color-mix(in srgb, var(--surface, #172033) 82%, var(--bg, #0b1016));
              color: var(--fg, #f8fafc);
              font-family: var(--font-mono, ui-monospace, "SF Mono", Menlo, Consolas, monospace);
              font-size: min(2.2cqw, 3.6cqh);
              font-weight: 600;
              letter-spacing: 0.04em;
              line-height: 1;
              white-space: nowrap;
              will-change: transform, opacity;
            }

            .stc-badge-b {
              border-color: color-mix(
                in srgb,
                var(--stc-accent, #22c55e) 62%,
                var(--border, #334155)
              );
              background: color-mix(in srgb, var(--stc-accent, #22c55e) 26%, var(--surface, #172033));
            }
          </style>

          <div
            id="split-tilt-cards-clip"
            class="stc-clip clip"
            data-start="0"
            data-duration="4.5"
            data-track-index="0"
          >
            <div class="stc-stage">
              <div class="stc-wing stc-wing-a">
                <div class="stc-float stc-float-a">
                  <section class="stc-card stc-card-a" aria-label="Left card">
                    <div class="stc-label stc-label-a"></div>
                    <div class="stc-slot" data-slot="card-a">
                      <!-- SLOT "card-a": replace the children of this element
                           with your own content (img, video, or HTML). -->
                      <div class="stc-default" aria-hidden="true">
                        <div class="stc-bar"></div>
                        <div class="stc-line"></div>
                        <div class="stc-line"></div>
                        <div class="stc-line"></div>
                      </div>
                    </div>
                  </section>
                  <div class="stc-badge-pos stc-badge-pos-a">
                    <div class="stc-badge stc-badge-a"></div>
                  </div>
                </div>
              </div>

              <div class="stc-wing stc-wing-b">
                <div class="stc-float stc-float-b">
                  <section class="stc-card stc-card-b" aria-label="Right card">
                    <div class="stc-label stc-label-b"></div>
                    <div class="stc-slot" data-slot="card-b">
                      <!-- SLOT "card-b": replace the children of this element
                           with your own content (img, video, or HTML). -->
                      <div class="stc-default" aria-hidden="true">
                        <div class="stc-bar"></div>
                        <div class="stc-line"></div>
                        <div class="stc-line"></div>
                        <div class="stc-line"></div>
                      </div>
                    </div>
                  </section>
                  <div class="stc-badge-pos stc-badge-pos-b">
                    <div class="stc-badge stc-badge-b"></div>
                  </div>
                </div>
              </div>
            </div>
          </div>

          <script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
          <script>
            (function () {
              "use strict";

              var root = document.getElementById("root");
              // Literal id: mount flattening strips data-composition-id from the
              // live root before this timeline registers.
              var compositionId = "split-tilt-cards";
              var clip = root.querySelector(".stc-clip");
              var wingA = root.querySelector(".stc-wing-a");
              var cardA = root.querySelector(".stc-card-a");
              var cardB = root.querySelector(".stc-card-b");
              var wingB = root.querySelector(".stc-wing-b");
              var floatA = root.querySelector(".stc-float-a");
              var floatB = root.querySelector(".stc-float-b");
              var labelA = root.querySelector(".stc-label-a");
              var labelB = root.querySelector(".stc-label-b");
              var badgeA = root.querySelector(".stc-badge-a");
              var badgeB = root.querySelector(".stc-badge-b");
              var badgePosA = root.querySelector(".stc-badge-pos-a");
              var badgePosB = root.querySelector(".stc-badge-pos-b");

              var vars =
                window.__hyperframes && window.__hyperframes.getVariables
                  ? window.__hyperframes.getVariables()
                  : {};

              var labelAText = vars.label_a == null ? "Before" : String(vars.label_a);
              var labelBText = vars.label_b == null ? "After" : String(vars.label_b);
              var badgeAText = vars.badge_a == null ? "v1" : String(vars.badge_a);
              var badgeBText = vars.badge_b == null ? "v2" : String(vars.badge_b);
              // Each enum choice routes to a DIFFERENT contract token so the
              // variable stays meaningful under a theme.
              var accentColors = {
                green: "var(--brand, #22c55e)",
                blue: "var(--accent, #38bdf8)",
                violet: "var(--accent-2, #c5a3ff)",
              };
              var accent = Object.prototype.hasOwnProperty.call(accentColors, vars.accent)
                ? vars.accent
                : "green";
              // INVARIANT: only none | fade | up reaches the timeline.
              var exit = vars.exit === "fade" || vars.exit === "up" ? vars.exit : "none";

              labelA.textContent = labelAText;
              labelB.textContent = labelBText;
              badgeA.textContent = badgeAText;
              badgeB.textContent = badgeBText;
              if (badgeAText === "") badgePosA.style.display = "none";
              if (badgeBText === "") badgePosB.style.display = "none";
              root.style.setProperty("--stc-accent", accentColors[accent]);

              // RETIME RANGE: fixed IN and OUT scale together only when D is too
              // short. HOLD is the sole elastic phase. Never use timeScale().
              var CARD_DUR_BASE = 1.1;
              var CARD_B_DELAY_BASE = 0.2;
              var FADE_DUR_BASE = 0.5;
              var BADGE_A_AT_BASE = 1.45;
              var BADGE_B_AT_BASE = 1.75;
              var BADGE_DUR_BASE = 0.4;
              var IN_BASE = BADGE_B_AT_BASE + BADGE_DUR_BASE;
              var OUT_BASE = exit === "none" ? 0 : 0.5;
              var STILLNESS = 0.3;
              var FLOAT_CYCLE = 2.0;

              var duration = Math.max(0.001, parseFloat(root.dataset.duration || "4.5"));
              var totalBase = IN_BASE + OUT_BASE;
              var scale = duration < totalBase ? duration / totalBase : 1;
              var IN = IN_BASE * scale;
              var OUT = OUT_BASE * scale;
              var HOLD = Math.max(0, duration - (IN + OUT));
              var OUT_START = IN + HOLD;

              function fireSfx(id, t) {
                root.dispatchEvent(
                  new CustomEvent("hf:sfx", { detail: { id: id, t: t }, bubbles: true }),
                );
              }

              // Explicit both-endpoints state makes tl.seek(0) deterministic.
              // Fades ride the cards and the clip, never the wing/float/stage
              // chain: opacity there would flatten the 3D tilt.
              gsap.set(clip, { opacity: 1, y: 0 });
              gsap.set(wingA, { x: "-26cqw", scale: 0.85 });
              gsap.set(wingB, { x: "26cqw", scale: 0.85 });
              gsap.set([cardA, cardB], { opacity: 0 });
              gsap.set([floatA, floatB], { y: "0cqh" });
              gsap.set([badgeA, badgeB], { opacity: 0, scale: 0 });

              var tl = gsap.timeline({ paused: true });

              // IN: mirrored opposite-wing entries, right ~0.2s behind, each
              // carrying its static book-open tilt; only x/scale/opacity move.
              [
                { wing: wingA, card: cardA, at: 0 },
                { wing: wingB, card: cardB, at: CARD_B_DELAY_BASE * scale },
              ].forEach(function (entry) {
                tl.to(
                  entry.card,
                  { opacity: 1, duration: 0.5 * scale, ease: "power2.out" },
                  entry.at,
                );
                tl.to(
                  entry.wing,
                  { x: "0cqw", duration: CARD_DUR_BASE * scale, ease: "power3.out" },
                  entry.at,
                );
                tl.to(
                  entry.wing,
                  { scale: 1, duration: CARD_DUR_BASE * scale, ease: "power3.out" },
                  entry.at,
                );
              });

              // Badges: the one sanctioned overshoot, kept small. Left lands
              // first, right ~0.3s behind, both inside fixed IN.
              [
                { badge: badgeA, text: badgeAText, at: BADGE_A_AT_BASE * scale },
                { badge: badgeB, text: badgeBText, at: BADGE_B_AT_BASE * scale },
              ].forEach(function (pop) {
                if (pop.text === "") return;
                tl.to(
                  pop.badge,
                  { opacity: 1, scale: 1, duration: BADGE_DUR_BASE * scale, ease: "back.out(1.9)" },
                  pop.at,
                );
                var land = pop.at + BADGE_DUR_BASE * scale;
                tl.call(
                  function () {
                    fireSfx("badge-pop-soft", land);
                  },
                  [],
                  land,
                );
              });

              // HOLD: phase-opposed barely-there idle float. Only whole cycles
              // fit; each is authored as explicit half-cycle tweens (never
              // repeat/yoyo) so every cycle starts and ends at rest, and the
              // closing STILLNESS window stays dead still.
              var floatWindow = Math.max(0, HOLD - STILLNESS);
              var cycles = Math.floor(floatWindow / FLOAT_CYCLE);
              var half = FLOAT_CYCLE / 2;
              for (var i = 0; i < cycles; i += 1) {
                var t0 = IN + i * FLOAT_CYCLE;
                tl.to(floatA, { y: "-0.6cqh", duration: half, ease: "sine.inOut" }, t0);
                tl.to(floatA, { y: "0cqh", duration: half, ease: "sine.inOut" }, t0 + half);
                tl.to(floatB, { y: "0.6cqh", duration: half, ease: "sine.inOut" }, t0);
                tl.to(floatB, { y: "0cqh", duration: half, ease: "sine.inOut" }, t0 + half);
              }

              // OUT: only when the exit variable asks for one; exit none holds
              // the final spread (frame roots own transitions).
              if (exit !== "none") {
                tl.to(
                  clip,
                  { opacity: 0, duration: FADE_DUR_BASE * scale, ease: "power2.in" },
                  OUT_START,
                );
                if (exit === "up") {
                  tl.to(
                    clip,
                    { y: "-6cqh", duration: FADE_DUR_BASE * scale, ease: "power2.in" },
                    OUT_START,
                  );
                }
              }

              tl.seek(0);

              window.__timelines = window.__timelines || {};
              window.__timelines[compositionId] = tl;
            })();
          </script>
        </div>
      </template>
    </body>
  </html>
  ```
</Accordion>

Tagged `motion-primitive` `layout` `compare` `holdable` `book-open` `tilt` `slots`.

## Related topics

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


## Related topics

- [Tilt Card](/catalog/components/tilt-card.md)
- [Camera Punch-In](/catalog/components/yt-camera-move.md)
- [Motion graphics](/prompting/motion-graphics.md)
