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(width<=820px){.nav-list{gap:2px;padding:6px}.nav-item{white-space:nowrap;padding-inline:2px}.materials-resource{padding:16px 12px}}@media (width<=380px){.nav-item{font-size:10px}}.book-guide-link{border:1px solid var(--line);background:var(--paper);border-radius:16px;align-items:flex-start;gap:18px;margin:28px 0;padding:24px;display:flex}.book-guide-icon{background:var(--water-soft);width:48px;height:48px;color:var(--heading);border-radius:12px;flex:none;place-items:center;display:grid}.book-guide-link .book-guide-label{color:var(--muted);margin:0 0 4px;font-size:12px;font-weight:700}.book-guide-link h2{margin:0 0 8px;font-size:19px}.book-guide-link p{color:var(--muted);margin:0 0 12px}.book-guide-link small{color:var(--muted);margin-top:10px;font-size:12px;display:block}.book-disclosure{background:var(--neutral-soft);color:var(--muted);border-radius:10px;padding:16px 20px;font-size:13px}.book-disclosure p{margin:0}.book-card-list{gap:16px;margin-top:20px;display:grid}.book-card{border:1px solid var(--line);background:var(--paper);border-radius:16px;grid-template-columns:144px minmax(0,1fr);align-items:center;gap:24px;padding:24px;scroll-margin-top:24px;display:grid}.book-card :is(h2,h3){margin:8px 0 4px;font-size:22px}.book-card .book-type{background:var(--water-soft);color:var(--heading);border-radius:6px;padding:3px 9px;font-size:12px;font-weight:700;display:inline-block}.book-card .book-meta{color:var(--muted);margin:0;font-size:12px}.book-description{margin:12px 0 16px;font-size:14px}.book-format-links{flex-wrap:wrap;gap:10px;display:flex}.book-format-links .secondary-button{min-height:42px;padding:8px 18px;font-size:13px}@media (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}}
