.eiken-usage{max-width:960px;margin:24px auto;padding:20px;font-size:18px;line-height:1.8}.eiken-usage section{border:1px solid #cbd5e1;padding:20px;margin-top:20px;border-radius:12px}.eiken-usage select,.eiken-usage button{max-width:100%;white-space:normal;font:inherit;padding:10px}.eiken-usage #choices{display:flex;gap:10px;flex-wrap:wrap}.eiken-usage [lang=en]{font-size:1.2em}.eiken-usage [hidden]{display:none!important}.eiken-usage :focus-visible{outline:3px solid #c67705;outline-offset:4px}