/* Styles are confined to the book page; existing site styles are unchanged. */
.book-page { --book-paper: #f6f5f0; --book-line: #d9dedb; --book-green: #47645e; color: #24343e; font-size: 16px; line-height: 2; }
.book-page a:focus-visible { outline: 3px solid #47645e; outline-offset: 5px; }
.book-page a { text-underline-offset: 5px; }
.book-page a:hover { text-decoration: underline; }
.book-shell { width: min(1060px, calc(100% - 64px)); margin-inline: auto; }
.book-reading { width: min(680px, calc(100% - 64px)); margin-inline: auto; }
.book-page h1, .book-page h2, .book-page h3 { color: var(--navy); margin: 0; }
.book-page h2 { font-family: "Yu Mincho", "Hiragino Mincho ProN", serif; font-size: clamp(25px, 2.5vw, 32px); font-weight: 600; line-height: 1.65; letter-spacing: .045em; }
.book-page p { margin: 0 0 24px; }
.book-page p:last-child { margin-bottom: 0; }
.book-page .book-kicker { color: var(--book-green); font-size: 12px; font-weight: 700; letter-spacing: .15em; margin-bottom: 24px; }
.book-hero { background: var(--book-paper); padding: 26px 0 66px; border-bottom: 1px solid var(--book-line); }
.book-page .book-breadcrumb { font-size: 12px; color: #5b676e; display: flex; gap: 12px; margin-bottom: 42px; }
.book-hero__grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 72px; align-items: center; }
.book-hero h1 { font-family: "Yu Mincho", "Hiragino Mincho ProN", serif; font-size: clamp(36px, 4vw, 52px); line-height: 1.45; letter-spacing: .04em; font-weight: 600; }
.book-hero h1 span { display: block; font-size: .64em; margin-bottom: 5px; }
.book-page .book-subtitle { font-size: 19px; letter-spacing: .04em; margin: 10px 0 24px; }
.book-page .book-credit { color: #53616a; font-size: 14px; margin: 0; }
.book-credit span { display: block; font-size: 12px; margin-top: 3px; }
.book-lead { margin: 30px 0 26px; border-left: 2px solid #7b9488; padding-left: 22px; }
.book-page .book-lead__title { font-weight: 700; font-size: 19px; color: var(--navy); margin-bottom: 8px; }
.book-lead p { font-size: 16px; line-height: 1.9; }
.book-cover { margin: 0; justify-self: center; width: 284px; max-width: 100%; }
.book-cover img { box-shadow: 9px 15px 27px rgba(24,42,45,.13); width: 100%; height: auto; }
.book-cover figcaption { color: #5b676e; text-align: center; font-size: 12px; margin-top: 18px; letter-spacing: .08em; }
.book-text-link { display: inline-flex; gap: 18px; align-items: center; font-size: 14px; font-weight: 600; color: var(--navy); min-height: 44px; }
.book-section { padding: 88px 0; scroll-margin-top: 110px; }
.book-opening h2 { margin-bottom: 32px; }
.book-opening p { line-height: 2.15; }
.book-page .book-question { color: var(--navy); font-family: "Yu Mincho", serif; font-size: clamp(25px, 3vw, 32px); margin: 36px 0; letter-spacing: .04em; }
.book-split { display: grid; grid-template-columns: 1fr 1.55fr; gap: 80px; }
.book-purpose { background: #f3f6f4; }
.book-thoughts { padding: 0; margin: 30px 0; list-style: none; }
.book-thoughts li { border-left: 2px solid #a5b7aa; padding-left: 18px; margin: 17px 0; }
.book-reader-list { padding: 0; margin: 0; list-style: none; }
.book-reader-list li { padding: 14px 0 14px 25px; position: relative; border-bottom: 1px solid var(--book-line); }
.book-reader-list li::before { content: ""; position: absolute; left: 0; top: 28px; width: 6px; height: 6px; border: 1px solid #708a7c; border-radius: 50%; }
.book-contents { padding-top: 0; }
.book-contents__heading { padding-top: 60px; border-top: 1px solid var(--book-line); margin-bottom: 40px; }
.book-chapters { list-style: none; padding: 0; margin: 0; }
.book-chapters > li { display: grid; grid-template-columns: 70px 1fr; gap: 26px; border-top: 1px solid var(--book-line); padding: 32px 0; }
.book-chapters > li:last-child { border-bottom: 1px solid var(--book-line); }
.book-chapter-number { color: #6e867e; font-family: Georgia, serif; font-size: 28px; line-height: 1.5; }
.book-chapters h3 { font-size: 21px; font-weight: 600; line-height: 1.7; margin-bottom: 10px; }
.book-chapters p { color: #4e5d65; }
.book-chapter-notes { margin-top: 24px; padding-left: 22px; border-left: 2px solid #c3cec6; }
.book-chapter-notes p { font-size: 15px; line-height: 2.15; }
.book-author { background: var(--book-paper); }
.book-author h2 { margin-bottom: 40px; }
.book-prose p { margin-bottom: 28px; }
.book-page .book-signature { margin-top: 32px; text-align: right; font-size: 17px; letter-spacing: .12em; }
.book-information .book-text-link { margin-top: 22px; font-weight: 400; }
.book-specs { margin: 0; }
.book-specs > div { display: grid; grid-template-columns: 100px minmax(0,1fr); gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--book-line); }
.book-specs > div:first-child { padding-top: 0; }
.book-specs dt { font-size: 14px; color: #57676a; }
.book-specs dd { margin: 0; }
.book-stores { margin-top: 36px; }
.book-stores > p { font-size: 14px; color: #52615f; margin-bottom: 10px; }
.book-stores ul { list-style: none; padding: 0; margin: 0 0 20px; display: flex; flex-wrap: wrap; column-gap: 24px; }
.book-stores a { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; font-size: 14px; color: var(--navy); text-decoration: underline; }
.book-page .book-store-note { font-size: 12px; line-height: 1.8; color: #66736d; }
.book-consult { background: #eef3f1; }
.book-consult h2 { margin-bottom: 32px; }
.book-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.book-actions a { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 13px 20px; border: 1px solid #82968d; color: var(--navy); font-size: 14px; min-height: 52px; }
.book-actions a:hover { background: #fff; }
.book-return { padding-top: 32px; padding-bottom: 32px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
@media(max-width: 900px) {
 .book-hero__grid { grid-template-columns: minmax(0,1fr) 240px; gap: 35px; }
 .book-cover { width: 230px; }
 .book-split { gap: 38px; grid-template-columns: 1fr 1.5fr; }
 .book-hero h1 { font-size: 40px; }
 .book-page .book-lead__title { font-size: 17px; }
 .book-page .book-subtitle { font-size: 16px; }
}
@media(max-width: 680px) {
 .book-shell, .book-reading { width: calc(100% - 40px); }
 .book-hero { padding-top: 18px; padding-bottom: 44px; }
 .book-page .book-breadcrumb { margin-bottom: 30px; }
 .book-hero__grid { grid-template-columns: 1fr; gap: 34px; }
 .book-hero h1 { font-size: clamp(32px, 9vw, 42px); }
 .book-page .book-kicker { margin-bottom: 18px; }
 .book-cover { width: 220px; }
 .book-page .book-lead__title { font-size: 17px; }
 .book-lead { padding-left: 16px; margin-top: 25px; }
 .book-desktop-break { display: none; }
 .book-section { padding: 56px 0; scroll-margin-top: 85px; }
 .book-split { grid-template-columns: 1fr; gap: 28px; }
 .book-contents { padding-top: 0; }
 .book-contents__heading { padding-top: 32px; margin-bottom: 30px; }
 .book-chapters > li { grid-template-columns: 35px minmax(0,1fr); gap: 15px; padding: 26px 0; }
 .book-chapters h3 { font-size: 19px; }
 .book-chapter-number { font-size: 23px; }
 .book-chapter-notes { padding-left: 12px; }
 .book-specs > div { grid-template-columns: 70px minmax(0,1fr); gap: 12px; }
 .book-specs dd { overflow-wrap: anywhere; }
 .book-information .book-text-link { margin-top: 10px; }
 .book-actions { flex-direction: column; }
 .book-actions a { font-size: 14px; }
 .book-return { gap: 6px; }
 .book-return .book-text-link { font-size: 13px; }
}
@media(prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }