.section-nav{display:flex;flex-wrap:wrap;gap:1rem 2rem;padding:.9rem 5vw;background:#d8f3f0;font-size:14px;font-weight:700}.section-nav a{text-decoration:none}.book-section{padding:4rem 5vw;background:#e7eeeb}.book-section .section-heading>div:first-child{max-width:720px}.book-controls{display:flex;gap:1rem;align-items:center;white-space:nowrap}.book-controls button{width:44px;height:44px;background:#10233b;border:0;color:white;border-radius:50%;font-size:23px;cursor:pointer}.book-controls button:disabled{opacity:.35;cursor:default}.book-track{display:flex;position:relative;gap:1.5rem;overflow-x:auto;scroll-snap-type:x mandatory;padding:1rem .2rem 2rem;scrollbar-color:#146b5d #d8f3f0}.book-page{display:block;flex:0 0 min(460px,75vw);scroll-snap-align:start;box-shadow:0 8px 24px #10233b22}.book-page img{display:block;width:100%;height:auto}.book-actions{display:flex;flex-wrap:wrap;gap:1rem;margin-top:1rem}.book-section>p{max-width:850px;font-size:14px}@media(max-width:700px){.book-section{padding:2.5rem 6vw}.book-controls{margin:1rem 0}.book-page{flex-basis:90%}.section-nav{font-size:13px;gap:.6rem 1rem}}