.section-opening-page{background:#fffdf8;border:1px solid #d7e2f3;border-radius:1.5rem;width:100%;max-width:1080px;margin:0 auto;padding:clamp(1rem,3vw,2rem);scroll-margin-top:5rem;box-shadow:0 16px 55px #173a7812}.section-opening-page header{text-align:center}.section-opening-page__number{color:#526078;margin:0;font-size:.72rem}.section-opening-page h2{color:#172033;font-family:var(--font-serif);margin:.65rem 0;font-size:clamp(1.45rem,3vw,2.2rem)}.section-opening-page__summary{color:#526078;margin-bottom:1rem;font-size:.85rem;line-height:1.7}.section-opening-page figure{margin:1rem 0}.section-opening-page img{object-fit:contain;border-radius:.85rem;width:100%;height:auto;max-height:65svh;display:block}.section-opening-page figcaption{color:#526078;text-align:center;margin-top:.6rem;font-size:.7rem;line-height:1.5}.section-opening-page nav{justify-content:space-between;gap:.75rem;display:flex}.section-opening-page button{color:#173a78;cursor:pointer;background:#fff;border:1px solid #c9d8ee;border-radius:.85rem;justify-content:center;align-items:center;gap:.35rem;min-height:44px;padding:.7rem 1rem;font-size:.85rem;display:inline-flex}.section-opening-page button:disabled{opacity:.45;cursor:default}.section-opening-page button:focus-visible{outline-offset:3px;outline:2px solid #2f66d0}.section-opening-page .section-opening-page__begin{color:#fff;background:#173a78}