.textbook-page{background:#fff;border:1px solid #cbded8;border-radius:12px;margin-top:14px;padding:16px}
.textbook-page strong{color:#176050;font-size:16px}
.textbook-page p{font-size:15px;line-height:1.8;white-space:pre-wrap;max-height:380px;overflow:auto;overflow-wrap:anywhere;margin-top:12px}
.textbook-page small{color:#687680}
.message.assistant .bubble{max-width:min(740px,95%)}
.question-form textarea{font-size:16px}