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(width<=600px){.book-guide-link{gap:12px;padding:18px}.book-guide-icon{width:36px;height:36px}.book-card{grid-template-columns:88px minmax(0,1fr);align-items:start;gap:14px;padding:18px 14px;scroll-margin-top:88px}.book-card :is(h2,h3){font-size:18px}.book-card .book-type{font-size:10px}.book-card .book-meta{font-size:11px}.book-description{margin:10px 0 12px;font-size:13px}.book-format-links{gap:8px}.book-format-links .secondary-button{padding:8px 12px}}.book-cover{text-align:center;width:144px;margin:0}.book-cover-image{justify-content:center;align-items:center;min-height:180px;display:flex}.book-cover img{object-fit:contain;max-width:100%;display:block}.book-cover figcaption{color:var(--muted);white-space:nowrap;margin-top:3px;font-size:9px}.book-cover figcaption a{align-items:center;min-height:24px;text-decoration:none;display:inline-flex}.book-cover figcaption a:hover,.book-cover figcaption a:focus-visible{text-underline-offset:3px;text-decoration:underline}.book-cover-placeholder{border:1px solid var(--line);background:var(--water-soft);min-height:180px;color:var(--heading);border-radius:8px;flex-direction:column;justify-content:center;align-items:center;gap:12px;padding:14px;font-size:12px;display:flex}@media (width<=600px){.book-cover{width:88px}.book-cover-image{min-height:124px}.book-cover img{width:88px;height:124px}.book-cover-placeholder{min-height:124px;padding:8px;font-size:10px}.book-cover figcaption{font-size:9px}}.related-materials{margin-top:40px}.related-materials h2{margin:0 0 12px;font-size:20px}.related-materials ul{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin:0;padding:0;list-style:none;display:grid}.related-materials a{border:1px solid var(--line);background:var(--paper);height:100%;color:var(--ink);border-radius:12px;flex-direction:column;gap:6px;padding:16px;text-decoration:none;transition:border-color .15s,background .15s;display:flex}.related-materials a:hover{border-color:var(--water);background:var(--water-soft)}.related-materials a:focus-visible{outline:2px solid var(--field-focus-border);outline-offset:3px}.related-materials span{color:var(--water-dark);font-weight:700}.related-materials small{color:var(--muted);font-size:13px;line-height:1.6}