.book-page{overflow-wrap:anywhere}.book-page main [id]{scroll-margin-top:95px}.book-page main :focus-visible{outline:3px solid #0b63ce;outline-offset:5px}.book-hero{display:grid;grid-template-columns:1.25fr .8fr;align-items:center;gap:clamp(2rem,6vw,5rem);padding-block:3.2rem 3.5rem}.book-hero h1{font-size:clamp(2.2rem,4vw,3.45rem);letter-spacing:-.045em;line-height:1.06;margin:.9rem 0 1.25rem}.book-hero h1 span{display:block;color:var(--pti-blue-dark)}.book-byline{color:var(--pti-muted);font-size:.95rem;margin:0 0 1.8rem}.book-byline a{color:inherit;text-underline-offset:3px}.book-lead{font-size:1.3rem;line-height:1.4;font-weight:650;letter-spacing:-.01em;margin:0 0 .8rem}.book-intro{font-size:1.05rem;line-height:1.75;color:var(--pti-muted);max-width:580px;margin:0 0 1.5rem}.book-purchase p{font-size:.875rem;color:var(--pti-muted);line-height:1.65;margin:.75rem 0 0}.book-buy{display:inline-flex;align-items:center;justify-content:center;gap:1rem;min-height:52px;padding:.85rem 1.4rem;color:white;background:var(--pti-blue);border-radius:8px;font-weight:700;font-size:1rem;text-decoration:none;line-height:1.4}.book-buy:hover{background:var(--pti-blue-dark)}.book-hero-links{display:flex;gap:.8rem 1.5rem;flex-wrap:wrap;margin-top:1.5rem;padding-top:1.25rem;border-top:1px solid var(--pti-line)}.book-hero-links a{font-size:.9rem;color:var(--pti-blue-dark);text-underline-offset:3px;line-height:1.7}.book-art{margin:0;padding:1.2rem 1.8rem 1.1rem;background:var(--pti-surface);border-radius:18px;border:1px solid var(--pti-line)}.book-art img{width:100%;max-width:330px;height:auto;display:block;margin:0 auto}.book-art figcaption{text-align:center;font-size:.875rem;font-weight:600;line-height:1.5;margin:.85rem 0 0}.book-art figcaption span{font-weight:400;color:var(--pti-muted)}
.book-scope{background:var(--pti-navy);color:white;padding:3rem 0}.book-scope-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:4rem}.book-scope .kicker{color:#8be4ef}.book-scope h2,.book-section-top h2,.book-authors h2,.book-close h2{font-size:clamp(1.75rem,3vw,2.5rem);letter-spacing:-.035em;line-height:1.15;margin:.65rem 0 1.1rem}.book-scope-layout>div>p:not(.kicker){color:#c8d5e5;line-height:1.75;max-width:430px}.book-topic-list article{display:grid;grid-template-columns:2rem 1fr;gap:1rem;padding:1.2rem 0;border-bottom:1px solid #456080}.book-topic-list article:first-child{padding-top:0}.book-topic-list article:last-child{border-bottom:0;padding-bottom:0}.book-topic-list article>span{font-size:.875rem;color:#8be4ef;font-weight:650;padding-top:.1rem}.book-topic-list h3{font-size:1.15rem;margin:0 0 .5rem;line-height:1.35}.book-topic-list p{color:#c8d5e5;margin:0;line-height:1.65}
.book-contents{padding-block:3.5rem}.book-section-top{display:grid;grid-template-columns:1.35fr 1fr;gap:3rem;align-items:end;margin-bottom:1.75rem}.book-section-top h2{margin-bottom:0}.book-section-top>p{color:var(--pti-muted);line-height:1.75;margin:0;max-width:460px}.book-toc details{border-top:1px solid var(--pti-line)}.book-toc details:last-child{border-bottom:1px solid var(--pti-line)}.book-toc summary{cursor:pointer;font-weight:700;padding:1.2rem .35rem;font-size:1rem;color:var(--pti-navy);line-height:1.6}.toc-count{float:right;font-size:.875rem;font-weight:400;color:var(--pti-muted);margin-left:1rem}.book-toc ul{margin:0 0 1.5rem;padding:0 1.5rem 0 2rem;display:grid;grid-template-columns:1fr 1fr;gap:.85rem 2rem;list-style:none}.book-toc li{min-width:0;line-height:1.65;color:var(--pti-muted)}.book-toc strong{color:var(--pti-ink)}
.book-previews{background:var(--pti-surface);padding:3rem 0;border-block:1px solid var(--pti-line)}.book-gallery{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1.75rem 1.25rem}.book-gallery figure{margin:0;min-width:0}.book-gallery a{display:block;background:white;border:1px solid #c8d5e5;border-radius:8px;overflow:hidden}.book-gallery a:hover{outline:2px solid var(--pti-blue);outline-offset:3px}.book-gallery img{width:100%;height:auto;aspect-ratio:1/1;object-fit:contain}.book-gallery figcaption{font-size:.9rem;line-height:1.55;font-weight:650;margin-top:.65rem}.book-gallery figcaption span{display:block;color:var(--pti-muted);font-size:.875rem;font-weight:400;margin-bottom:.1rem}
.book-authors{display:grid;grid-template-columns:.55fr 1fr;gap:3.5rem;align-items:center;padding-block:3.5rem}.book-author-photo{max-width:280px;justify-self:center;border-radius:14px;overflow:hidden;background:var(--pti-surface)}.book-author-photo img{width:100%;height:auto}.book-authors h3{font-size:1.1rem;margin:1.25rem 0 .65rem}.book-authors p:not(.kicker){color:var(--pti-muted);line-height:1.75}.book-authors a{color:var(--pti-blue-dark);font-weight:650;text-underline-offset:3px}.book-teaching{padding-bottom:3.5rem}.book-teaching .book-section-top{padding-top:2rem;border-top:1px solid var(--pti-line)}.book-quotes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:2rem}.book-quotes figure{margin:0;padding-left:1.2rem;border-left:3px solid var(--pti-cyan)}.book-quotes blockquote{margin:0}.book-quotes blockquote p{line-height:1.8;color:var(--pti-ink);margin:0 0 1rem}.book-quotes figcaption{font-size:.875rem;line-height:1.6;color:var(--pti-muted)}.book-quotes figcaption strong,.book-quotes figcaption span{display:block}.book-quotes figcaption strong{color:var(--pti-ink)}
.book-close{display:grid;grid-template-columns:1.1fr 1fr;gap:4rem;background:var(--pti-surface);padding:2.5rem;border:1px solid var(--pti-line);border-radius:18px;margin-bottom:3.5rem}.book-close h2{font-size:2rem}.book-close p{color:var(--pti-muted);line-height:1.75}.book-volume{border-left:1px solid #c8d5e5;padding-left:2.5rem;display:flex;flex-direction:column;align-items:start;justify-content:center;min-width:0}.book-volume h3{font-size:1.2rem;line-height:1.4;margin:0}.book-volume a{color:var(--pti-blue-dark);text-underline-offset:3px;font-weight:650;margin:.4rem 0}.book-page .site-footer .brand__name{color:white}.book-page .site-footer .brand__tagline{color:#b7c9df}
@media(max-width:1000px){.book-hero{gap:2rem;grid-template-columns:1.15fr .85fr}.book-art{padding:1rem}.book-hero h1{font-size:2.7rem}.book-scope-layout{gap:2.5rem}.book-gallery{grid-template-columns:repeat(3,minmax(0,1fr))}.book-close{gap:2rem}.book-volume{padding-left:2rem}}
@media(max-width:700px){.book-hero{grid-template-columns:1fr;padding-block:2rem 2.5rem;gap:2rem}.book-hero h1{font-size:2.4rem}.book-byline{margin-bottom:1.4rem}.book-lead{font-size:1.2rem}.book-hero .kicker{font-size:.8rem}.book-art{width:min(100%,360px);justify-self:center}.book-art img{max-width:260px}.book-scope-layout,.book-section-top,.book-authors,.book-close{grid-template-columns:1fr;gap:2rem}.book-scope,.book-previews{padding-block:2.5rem}.book-contents,.book-authors{padding-block:2.5rem}.book-section-top{gap:.75rem}.book-gallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:1.5rem 1rem}.book-toc ul{grid-template-columns:1fr;padding-left:1rem}.book-toc summary{padding-block:1rem}.toc-count{float:none;display:block;margin:.3rem 0 0 1.2rem}.book-author-photo{max-width:220px;justify-self:start}.book-quotes{grid-template-columns:1fr;gap:1.5rem}.book-teaching{padding-bottom:2.5rem}.book-close{padding:1.5rem;margin-bottom:2.5rem}.book-volume{border-left:0;border-top:1px solid #c8d5e5;padding:1.5rem 0 0}.book-buy{width:100%}.book-hero-links{gap:.7rem 1.4rem}}
@media(max-width:360px){.book-hero h1{font-size:2.15rem}.book-gallery{grid-template-columns:1fr}.book-hero-links{flex-direction:column}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}