.open-book-shell{max-width:1060px;color:var(--ink);margin:auto;padding:2rem 1.3rem 3rem;line-height:1.9}.open-book-shell h1{font:600 clamp(2rem,4vw,3.4rem)/1.5 var(--serif);color:var(--evergreen);letter-spacing:normal;width:auto;max-width:26ch}.open-book-shell h2{font:600 1.7rem/1.6 var(--serif);color:var(--evergreen)}.open-books-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:1.5rem;margin:2rem 0;display:grid}.open-books-grid article{background:var(--white);border:1px solid var(--line);border-top:3px solid var(--gold);padding:1.6rem}.open-book-tools{flex-wrap:wrap;align-items:center;gap:.8rem;margin:1rem 0;display:flex}.open-book-shell button,.open-book-shell input,.open-book-shell summary{font:inherit;max-width:100%;min-height:44px;color:var(--ink);padding:.5rem .8rem}.open-book-shell button{border:1px solid var(--evergreen);background:var(--evergreen);color:#fff}.open-book-shell input{border:1px solid var(--line);background:#fff}.open-book-shell summary{cursor:pointer;background:#ecece3}.open-book-controls{border-block:1px solid var(--line);margin:1.5rem 0;padding:1rem 0}.open-book-controls nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:.7rem;margin:1rem;display:grid}.open-book-prose{background:var(--white);font:400 clamp(1.16rem,2vw,1.45rem)/2.1 var(--serif);border-inline-start:3px solid var(--gold);padding:clamp(1rem,4vw,2.5rem)}.open-book-prose p{white-space:pre-wrap;overflow-wrap:anywhere;margin:1.2em 0}.open-book-prose :target{background:#f8edcf;scroll-margin:2rem}.open-book-pagination{justify-content:space-between;align-items:center;gap:1rem;padding:1.4rem 0;display:flex}.open-book-pagination a{border:1px solid var(--line);min-height:44px;padding:.7rem 1.3rem}.open-book-meta,.open-book-license{color:var(--ink-soft);font-size:.95rem}.open-book-license{margin-top:2rem}.open-book-license p{overflow-wrap:anywhere}.open-book-shell :focus-visible{outline:3px solid var(--gold);outline-offset:3px}@media (max-width:680px){.open-books-grid,.open-book-controls nav{grid-template-columns:1fr}.open-book-shell{padding-inline:1rem}.open-book-prose{padding:1.1rem}}