.learning-video{display:block;width:100%;height:auto;max-height:75vh;border-radius:16px;background:#123345}.guide details{padding:18px 0}.guide summary{cursor:pointer;font-weight:700}.guide details h3{margin-top:28px}.guide .fine{font-size:.9rem;line-height:1.6}.guide-index{flex-wrap:wrap}