Hero panel (a change, governed)

Identity

Use when

• The landing hero, beside the promise. Why: The first screen shows the product working, not a slogan.

Do not use when

• Anywhere else. Why: It is the hero's one live moment.

Anatomy

Made of: showcase-frame, playback-controls, finding, caption.

Used in: hero.

Variants

States

Tokens

Layout

Spacing and rhythm

Motion

Runtime and reuse

1. stylesheet: /css/site.css. Built Site tokens, core and registered element CSS; preserve modes, focus and responsive rules.

2. stylesheet: /css/demos.css. Existing legacy demo styles where the rendered specimen uses them.

3. font: /fonts/. Self-hosted files referenced by Site @font-face, with licences; Japanese locale overrides remain applicable.

4. Static fallback: Original build-time specimen remains readable before loading and after chunk/initialization failure; enhancement controls retain authored hidden state.

5. Configured initializer: apps/showcase/site/interactives/drift-hero.ts#init. The host owns transactional static-markup restoration and runtime state.

6. Consumer module (imports relative to the configured source root):
   import { createRuntimeHost } from "./src/workflows/runtime-host";
   import { SITE_RUNTIMES } from "./apps/showcase/site/runtime-registry";
   const definition = SITE_RUNTIMES.find(entry => entry.binding.id === "drift-hero");
   if (!definition || definition.binding.lifecycle.kind !== "managed") throw new Error("Managed runtime binding unavailable");
   const host = createRuntimeHost([definition]);
   export function mountRuntime(container: ParentNode) { return host.mountAll(container); }

7. After inserting the rendered markup, call mountRuntime(container) for the container holding [data-demo="drift-hero"]. Retain the returned disposal function and call it before removing, replacing or remounting, including every Storybook args render. The configured host restores captured static markup/attributes on disposal or caught load/initialization failure; retry starts a fresh managed remount.

Accessibility passport

Content

Good: “A sample change. The checks are Loom's own code.”

Bad: “Live from a client”

Japanese: i18n.ts ix.dh.*.

Icons and illustrations

None: this element uses no icon or illustration of its own.

Decisions and exceptions

• D-SITE-008: One ShowcaseFrame for every self-playing element

Usage

76 uses across the built pages (measured by npm run site:system).

Tests

Figma

not-yet: The Loom Site Figma library is the last stage of the plan; this element is not mapped yet.

Open in Storybook