.chapter-picker{display:flex;flex-wrap:wrap;align-items:end;gap:8px;margin:12px 0}.chapter-picker label{font-weight:700;font-size:14px;flex-basis:100%}.chapter-picker select{flex:1;min-width:180px;max-width:600px;padding:11px;background:#fff;color:#222;border:1px solid #a9a59d;border-radius:4px}.chapter-picker button{border:0;background:#b9001b;color:#fff;border-radius:4px;padding:12px 16px;font-weight:700;cursor:pointer}.chapter-picker button:focus-visible,.chapter-picker select:focus-visible{outline:3px solid #191919;outline-offset:2px}@media(max-width:600px){.chapter-picker select{max-width:none;width:100%;flex-basis:100%}.chapter-picker button{width:100%}.reader-pdf{height:65vh;min-height:360px}}