.book-nav{grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,64px);display:grid}.book-col h2{color:var(--gold);border-bottom:1px solid var(--hairline);margin:0 0 .35rem;padding-bottom:.5rem}.book-col ul{margin:0;padding:0;list-style:none}.book-col li{border-bottom:1px solid #f4f0e8;justify-content:space-between;align-items:center;padding:.34rem 0;display:flex}.book-col a{color:var(--ink);font-size:1rem}.book-col a:hover{color:var(--gold)}.book-col .ch{color:var(--faint);font-variant-numeric:tabular-nums;font-size:.78rem}@media (max-width:640px){.book-nav{grid-template-columns:1fr;gap:36px}}