补 motion 缺口（二）：a system for full animated explainer sequences (pairs with the animated-explainer skill). Scene-transition-friendly gradients, persistent step badges, timed-reveal pacing, and 3D-transform-ready cards. Where Title Card overlays text on video, this drives the whole animated scene.
補足動態缺口（二）：給整段動畫解說用的系統（搭 animated-explainer skill）。場景轉場友善的漸層、常駐步驟徽章、計時揭露節奏、3D 卡片。Title Card 是把字疊在影片上，這套是驅動整個動畫場景。
Design Notes
Space Grotesk + Inter + Caveat annotation; for step-by-step animated explainers, not text-over-footage overlays.
Space Grotesk + Inter + Caveat 標註；給逐步動畫解說，不是影片疊字。