.gaon-intro { padding-block: clamp(2.5rem, 6vw, 5rem); }
.gaon-intro .section-top { margin-bottom: 1.75rem; }
.gaon-intro video { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; background: #e8e2d8; border-radius: 6px; }
.gaon-intro .intro-note { max-width: 64ch; margin-top: 1rem; line-height: 1.7; }
.gaon-intro details { margin-top: 1.25rem; max-width: 70ch; }
.gaon-intro summary { cursor: pointer; padding-block: .75rem; }
.gaon-intro details p { line-height: 1.9; word-break: keep-all; overflow-wrap: break-word; }
.gaon-intro a:focus-visible, .gaon-intro summary:focus-visible, .gaon-intro video:focus-visible { outline: 3px solid #765431; outline-offset: 5px; }