html.book-document{scroll-padding-top:175px}.book-breadcrumb{margin:0;padding:25px 0;font-size:12px;flex-wrap:wrap;gap:12px}.book-hero{background:var(--paper)}.book-hero-layout{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.2fr);gap:110px;align-items:center;padding:38px 0 72px}.book-cover{width:280px;max-width:100%;justify-self:center;filter:none}.book-heading{min-width:0}.book-series{font-size:12px;letter-spacing:1px;color:var(--red);margin:0 0 17px;display:block}.book-heading h1{font-weight:550;font-size:48px;line-height:1.32;letter-spacing:1px;margin:0 0 21px}.book-subtitle{font-size:18px;max-width:430px;line-height:1.85;margin:0 0 16px}.book-authors{font-size:14px;margin:0;color:#64645f}.book-price{display:flex;align-items:baseline;gap:18px;margin:22px 0}.book-price>span{font-size:13px;color:#64645f}.book-price strong{font-size:33px;font-weight:500;color:var(--red);line-height:1.2;letter-spacing:.4px}.book-price small{font-size:20px;margin-right:5px}.book-facts{font-size:12px;display:grid;grid-template-columns:64px 1fr;gap:5px 16px;margin:0}.book-facts dt{color:var(--muted)}.book-facts dd{margin:0}.book-actions{display:flex;gap:32px;align-items:center;margin-top:27px}.book-button{display:inline-flex;align-items:center;gap:34px;background:var(--red);color:white;padding:11px 21px;font-size:14px}.book-button:hover{background:#bc0010}.book-nav{position:sticky;top:96px;z-index:15;background:white;border-bottom:1px solid var(--line)}.book-nav .wrap{display:flex;gap:50px;min-height:65px;align-items:center}.book-nav a{font-size:14px}.book-nav a:hover,.book-nav a:focus-visible{color:var(--red)}.book-section{border-bottom:1px solid var(--line)}.book-section-layout{display:grid;grid-template-columns:270px minmax(0,1fr);gap:60px}.book-prose{max-width:780px;font-size:17px;line-height:2.05}.book-prose p{margin:0 0 20px}.book-prose p:last-child{margin:0}.book-note{font-size:12px;color:var(--muted)}.book-toc{background:#fcfcfa}.toc-grid{display:grid;grid-template-columns:1fr 1fr;gap:38px 75px}.toc-group:first-child{grid-column:1/-1}.toc-group h3{display:flex;justify-content:space-between;align-items:baseline;font-size:21px;font-weight:550;margin:0 0 15px;border-bottom:1px solid #a9a9a2;padding-bottom:14px}.toc-group h3>span{font-size:12px;color:var(--muted);font-weight:400}.toc-group ul{list-style:none;padding:0;margin:0}.toc-group li{display:flex;gap:20px;justify-content:space-between;align-items:baseline;padding:11px 0;border-bottom:1px solid var(--line);font-size:14px;line-height:1.8}.toc-group li a{display:flex;justify-content:space-between;gap:20px;width:100%}.toc-group li a:hover{color:var(--red)}.toc-group small{font-size:10px;color:var(--red);display:inline-block;margin-left:10px;white-space:nowrap}.toc-page{flex-shrink:0;color:var(--muted);font-size:12px;font-variant-numeric:tabular-nums}.guide-list{border-top:1px solid var(--line)}.guide-row{display:grid;grid-template-columns:30px minmax(0,1fr) 25px;gap:22px;padding:28px 0;border-bottom:1px solid var(--line);align-items:baseline}.guide-number{font-size:11px;color:var(--red);font-variant-numeric:tabular-nums}.guide-row h3{font-size:22px;font-weight:550;line-height:1.6;margin:0 0 10px}.guide-row p{font-size:14px;color:var(--muted);margin:0;line-height:1.9}.guide-arrow{font-size:21px}.guide-row:hover h3{color:var(--red)}.practice-section{background:var(--paper)}.practice-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:48px;list-style:none;padding:0;margin:0}.practice-steps li{border-top:1px solid #b9b9b0;padding-top:18px}.practice-steps h3{font-size:23px;font-weight:550;margin:15px 0}.practice-steps p{font-size:15px;line-height:2;margin:0 0 22px}.practice-range{display:block;font-size:12px;color:#73736b;line-height:1.9}.practice-credit{font-size:11px;color:var(--muted);margin:32px 0 0}.related-book{display:flex;align-items:center;gap:35px}.related-cover{width:115px;flex:none}.related-book h3{font-size:23px;font-weight:550;line-height:1.5;margin:0 0 12px}.related-book p{font-size:14px;color:var(--muted);margin:0 0 20px}.related-book:hover h3{color:var(--red)}.reading-article{max-width:780px;width:calc(100% - 64px);margin:30px auto 75px}.guide-heading h1{font-size:40px;font-weight:550;line-height:1.5;margin:18px 0 22px}.guide-meta{font-size:12px;color:var(--muted);display:flex;flex-wrap:wrap;gap:12px 23px}.guide-lead{font-size:19px;line-height:2;margin:32px 0 35px}.article-nav{display:flex;gap:10px 25px;flex-wrap:wrap;padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:13px;color:#686860}.article-nav a:hover{color:var(--red)}.article-body{font-size:17px;line-height:2.05}.article-body section{margin-top:44px}.article-body h2{font-size:26px;font-weight:550;line-height:1.5;margin:0 0 23px}.article-body p{margin:0 0 23px}.article-exercise{background:var(--paper);padding:30px}.article-exercise ol{padding-left:23px}.article-exercise li{padding-left:6px;margin-bottom:12px}.article-exercise h3{font-size:20px;font-weight:550;margin:27px 0 14px}.article-exercise p:last-child{margin:0}.article-source{font-size:12px;color:var(--muted);border-top:1px solid var(--line);padding-top:23px;margin-top:40px}.article-source p{margin:0 0 10px}.guide-bottom{border-top:1px solid var(--line);margin-top:30px;padding-top:25px;display:flex;justify-content:space-between;gap:25px;font-size:13px}.guide-bottom a:hover{color:var(--red)}
@media(max-width:1100px){.book-hero-layout{gap:60px}.book-heading h1{font-size:43px}.book-cover{width:250px}.book-section-layout{grid-template-columns:220px minmax(0,1fr);gap:40px}.toc-grid{gap:35px 40px}.practice-steps{gap:28px}}
@media(max-width:850px){.book-nav{top:78px}.book-hero-layout{gap:40px;grid-template-columns:minmax(0,.75fr) minmax(0,1.2fr);padding:25px 0 50px}.book-heading h1{font-size:35px}.book-subtitle{font-size:16px}.book-cover{width:210px}.book-section-layout{grid-template-columns:1fr;gap:28px}.book-nav .wrap{gap:38px}.book-prose{font-size:16px}.guide-row h3{font-size:21px}.practice-steps h3{font-size:20px}}
@media(max-width:600px){html.book-document{scroll-padding-top:145px}.book-breadcrumb{font-size:11px;padding:20px 0;gap:9px}.book-hero-layout{grid-template-columns:1fr;gap:30px;padding:15px 0 38px}.book-cover{width:165px}.book-heading h1{font-size:34px;line-height:1.35;letter-spacing:0;margin-bottom:16px}.book-series{font-size:10px;margin-bottom:13px}.book-subtitle{font-size:15px;line-height:1.9;margin-bottom:12px}.book-authors{font-size:13px}.book-price{margin:20px 0}.book-price strong{font-size:30px}.book-facts{font-size:12px}.book-actions{gap:26px;margin-top:25px}.book-button{font-size:13px;gap:26px;padding:10px 19px}.book-nav{top:74px}.book-nav .wrap{justify-content:space-between;gap:12px;min-height:55px}.book-nav a{font-size:12px;white-space:nowrap}.book-prose{font-size:15px;line-height:2}.book-note{font-size:10px}.toc-grid{grid-template-columns:1fr;gap:28px}.toc-group h3{font-size:19px}.toc-group li{font-size:13px;gap:14px}.toc-group li a{gap:14px}.toc-group small{font-size:10px;margin-left:6px}.guide-row{grid-template-columns:20px minmax(0,1fr) 15px;gap:12px;padding:23px 0}.guide-row h3{font-size:19px}.guide-row p{font-size:13px}.guide-arrow{font-size:18px}.practice-steps{grid-template-columns:1fr;gap:30px}.practice-steps h3{font-size:21px;margin:10px 0}.practice-steps p{font-size:14px;margin-bottom:15px}.related-book{gap:22px;align-items:flex-start}.related-cover{width:85px}.related-book h3{font-size:19px}.related-book p{font-size:12px;margin-bottom:12px}.related-book .topic{margin-bottom:8px}.reading-article{width:calc(100% - 40px);margin:15px auto 48px}.guide-heading h1{font-size:28px;margin:14px 0 20px;line-height:1.5}.guide-meta{font-size:10px;gap:8px 15px}.guide-lead{font-size:16px;line-height:2;margin:25px 0}.article-nav{font-size:12px;gap:9px 20px;padding:17px 0}.article-body{font-size:15px;line-height:2}.article-body section{margin-top:32px}.article-body h2{font-size:23px;margin-bottom:18px}.article-body p{margin-bottom:20px}.article-exercise{padding:22px 18px}.article-exercise h3{font-size:18px}.article-source{font-size:11px}.guide-bottom{flex-direction:column;gap:18px;font-size:12px}}

/* Simplified book entry and article return link. */
.book-hero-layout{padding-top:72px}.reading-article{margin-top:48px}.book-return{display:inline-block;font-size:13px;color:var(--muted);margin-bottom:12px}.book-return:hover{color:var(--red)}.guide-bottom{justify-content:flex-end}
@media(max-width:850px){.book-hero-layout{padding-top:50px}}
@media(max-width:600px){.book-hero-layout{padding-top:35px}.reading-article{margin-top:30px}.book-return{font-size:12px;margin-bottom:10px}}
/* Shared layouts for single-volume and set catalogs. */
.book-facts{margin-top:20px}.book-price+.book-facts{margin-top:0}.book-cover.set-cover{width:360px}.toc-grid.flat{display:block}.toc-grid.flat .toc-group h3{display:none}.toc-grid.flat ul{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:65px}.toc-grid.volumes .toc-group:first-child{grid-column:auto}.toc-grid.volumes h3{gap:18px}.book-facts dd{overflow-wrap:anywhere}.article-source a{text-decoration:underline;text-underline-offset:3px}.toc-group li{scroll-margin-top:175px}
@media(max-width:600px){.book-cover.set-cover{width:265px}.toc-grid.flat ul{grid-template-columns:1fr}.toc-group li{scroll-margin-top:145px}}