.product-video{width:100%}.product-video--grammar{aspect-ratio:9 / 16}.product-video--feedback{aspect-ratio:16 / 9}.product-video>video,.product-video__play{display:block;width:100%;height:auto;aspect-ratio:inherit;border-radius:18px;background:#000}.product-video__play{position:relative;padding:0;border:1px solid var(--border-subtle);overflow:hidden;cursor:pointer;color:#fff;font:inherit;text-align:start}.product-video__play img{display:block;width:100%;height:100%;aspect-ratio:inherit;object-fit:cover}.product-video__icon{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);display:grid;place-items:center;width:64px;height:64px;border:1px solid #fff;border-radius:50%;background:#000000bf;color:#fff;font-size:22px}.product-video__caption{position:absolute;inset:auto 0 0;display:grid;gap:4px;padding:36px 20px 16px;background:linear-gradient(transparent,#000000f2);color:#fff;font-size:16px;line-height:1.5}.product-video__caption>span{font-size:13px;color:#fff}.product-video>video:focus-visible,.product-video__play:focus-visible,.grammar-guide-video__languages button:focus-visible{outline:3px solid var(--text-primary);outline-offset:4px}.grammar-guide-video{width:min(100%,320px);margin:28px auto 0}.grammar-guide-video__languages{display:flex;gap:8px;margin-bottom:12px}.grammar-guide-video__languages button{min-height:48px;flex:1;padding:8px 16px;border:1px solid var(--border-subtle);border-radius:999px;background:var(--elevation-1);color:var(--text-primary);font:inherit;font-size:14px;font-weight:700;cursor:pointer}.grammar-guide-video__languages button[aria-pressed=true]{border-color:var(--text-primary);box-shadow:inset 0 0 0 1px var(--text-primary)}.grammar-guide-video__note{margin:12px 0 0;color:var(--text-secondary);font-size:13px;line-height:1.6;text-align:center}.feedback-demo-video{width:min(100%,460px);margin:28px auto 36px}