/* HVDB book runtime isolation layer — rc4.129.
 * Loaded after the historical book stylesheet. All selectors are namespaced.
 */
body.hvdb-book-product-runtime{overflow-x:hidden;background:#fbf7ef}
body.hvdb-book-product-runtime #page,
body.hvdb-book-product-runtime #content,
body.hvdb-book-product-runtime .site-content,
body.hvdb-book-product-runtime .content-area{width:100%;max-width:none;margin:0;padding:0}
.hvdb-book-product-page{display:block;width:100%;max-width:none;margin:0;padding:0;overflow:clip}
.hvdb-book-product-page .hvdb-book-product-page__shell{width:min(1240px,calc(100% - 48px));max-width:1240px;margin:0 auto;padding:42px 0 76px}
.hvdb-book-product-page .hvdb-book-product-page__hero{width:100%;margin:0}
.hvdb-book-product-page .hvdb-book-breadcrumb{width:100%;max-width:none;margin:0 0 14px}
.hvdb-book-product-page .hvdb-book-purchase-hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:start;width:100%;max-width:none;margin:0;padding:38px}
.hvdb-book-product-page .hvdb-book-purchase-hero__media,
.hvdb-book-product-page .hvdb-book-purchase-hero__summary{min-width:0;width:100%;max-width:none;margin:0}
.hvdb-book-product-page .hvdb-book-main-image{width:100%;max-width:100%;margin:0}
.hvdb-book-product-page .hvdb-book-main-image img{width:100%;max-width:100%;height:auto;max-height:680px;object-fit:contain}
.hvdb-book-product-page .hvdb-book-purchase-hero__summary h1{overflow-wrap:anywhere;font-size:clamp(40px,3.45vw,52px);line-height:1.04}
.hvdb-book-product-page .hvdb-book-purchase-hero__price{font-size:clamp(30px,2.5vw,38px);line-height:1.15}
.hvdb-book-product-page .hvdb-book-purchase-hero__cart form.cart{display:grid;grid-template-columns:minmax(76px,92px) minmax(190px,1fr);gap:14px;width:100%;max-width:520px}
.hvdb-book-product-page .hvdb-book-purchase-hero__cart .single_add_to_cart_button{width:100%;min-width:0}
.hvdb-book-product-page .hvdb-book-product-page__flow,
.hvdb-book-product-page .hvdb-book-product-page__content,
.hvdb-book-product-page .hvdb-book-product-page__reviews,
.hvdb-book-product-page .hvdb-book-product-page__related{width:100%;max-width:none;clear:both}
.hvdb-book-product-page .hvdb-book-review-layout{grid-template-columns:minmax(0,1fr);gap:28px}
.hvdb-book-product-page .hvdb-book-review-form{width:100%;max-width:none}
.hvdb-book-product-page .hvdb-related-books__grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;width:100%}
.hvdb-book-product-page .hvdb-related-book{min-width:0;width:100%}
.hvdb-book-product-page .hvdb-related-book h3,
.hvdb-book-product-page .hvdb-related-book h3 a{overflow-wrap:normal;word-break:normal;hyphens:none}
.admin-bar .hvdb-book-product-page .hvdb-book-nav{top:46px}
@media (max-width:1100px){
  .hvdb-book-product-page .hvdb-book-product-page__shell{width:min(100% - 36px,1240px)}
  .hvdb-book-product-page .hvdb-book-purchase-hero{gap:32px;padding:30px}
  .hvdb-book-product-page .hvdb-related-books__grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:820px){
  .hvdb-book-product-page .hvdb-book-product-page__shell{width:min(100% - 24px,1240px);padding-top:24px}
  .hvdb-book-product-page .hvdb-book-purchase-hero{grid-template-columns:minmax(0,1fr);gap:28px;padding:24px}
  .hvdb-book-product-page .hvdb-book-purchase-hero__summary h1{font-size:clamp(34px,7vw,46px)}
  .hvdb-book-product-page .hvdb-related-books__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
}
@media (max-width:430px){
  .hvdb-book-product-page .hvdb-book-product-page__shell{width:min(100% - 16px,1240px);padding-top:12px}
  .hvdb-book-product-page .hvdb-book-purchase-hero{padding:16px;border-radius:18px}
  .hvdb-book-product-page .hvdb-book-purchase-hero__cart form.cart{grid-template-columns:76px minmax(0,1fr)}
  .hvdb-book-product-page .hvdb-related-books__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
}
@media (max-width:359px){
  .hvdb-book-product-page .hvdb-related-books__grid{grid-template-columns:minmax(0,1fr)}
}

/* rc4.133 professional refinement */
.hvdb-book-product-page .hvdb-book-purchase-hero{background:linear-gradient(180deg,#fffdf9 0%,#fffaf2 100%);border:1px solid #eadfce;box-shadow:0 24px 70px rgba(48,32,16,.08);border-radius:28px}
.hvdb-book-product-page .hvdb-book-purchase-hero__summary{padding:10px 4px 0}
.hvdb-book-product-page .hvdb-book-purchase-hero__short{font-size:17px;line-height:1.7;color:#59606d}
.hvdb-book-product-page .hvdb-book-purchase-hero__price{margin:18px 0 14px;color:#a30f2d;font-weight:800}
.hvdb-book-product-page .hvdb-book-purchase-facts{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.hvdb-book-product-page .hvdb-book-purchase-assurance{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.hvdb-book-product-page .hvdb-book-purchase-assurance>div{padding:14px;background:#fbf7ef;border:1px solid #eadfce;border-radius:14px}
.hvdb-book-product-page .hvdb-book-detail-heading{max-width:760px;margin:70px auto 28px;text-align:center}
.hvdb-book-product-page .hvdb-book-nav{max-width:760px;margin:0 auto 34px;padding:8px;border:1px solid #eadfce;border-radius:999px;background:rgba(255,255,255,.92);box-shadow:0 8px 28px rgba(48,32,16,.06)}
.hvdb-book-product-page .hvdb-book-story-section{max-width:1080px;margin:0 auto 24px;padding:34px;border-radius:24px;border:1px solid #eadfce;box-shadow:0 12px 38px rgba(48,32,16,.05)}
.hvdb-book-product-page .hvdb-book-story-section:nth-of-type(even){background:#fffaf3}
.hvdb-book-product-page .hvdb-book-story-section:nth-of-type(odd){background:#fff}
.hvdb-book-product-page .hvdb-book-section-heading{margin-bottom:24px}
.hvdb-book-product-page .hvdb-book-section-heading h2{font-size:clamp(28px,2.6vw,40px);line-height:1.12}
.hvdb-book-product-page .hvdb-book-reading-column{max-width:780px}
.hvdb-book-product-page .hvdb-book-fit-value-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.hvdb-book-product-page .hvdb-book-fit-value-grid>div{padding:24px;border:1px solid #eadfce;border-radius:18px;background:#fff}
.hvdb-book-product-page .hvdb-book-fit-value-grid h3{margin:0 0 16px;font-size:22px}
.hvdb-book-product-page .hvdb-book-fit-value-grid ul{display:grid;gap:12px;margin:0;padding:0;list-style:none}
.hvdb-book-product-page .hvdb-book-fit-value-grid li{display:flex;gap:10px;line-height:1.55}
.hvdb-book-product-page .hvdb-book-fit-value-grid li span{color:#a30f2d;font-weight:800}
.hvdb-book-product-page .hvdb-related-books{max-width:1080px;margin:40px auto 0}
.hvdb-book-product-page .hvdb-related-books__heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:20px}
.hvdb-book-product-page .hvdb-related-books__heading>a{font-weight:700;color:#8d1028;text-decoration:none}
.hvdb-book-product-page .hvdb-related-book{border:1px solid #eadfce;border-radius:18px;overflow:hidden;background:#fff;box-shadow:0 10px 28px rgba(48,32,16,.06);transition:transform .2s ease,box-shadow .2s ease}
.hvdb-book-product-page .hvdb-related-book:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(48,32,16,.1)}
.hvdb-book-product-page .hvdb-related-book__image img{aspect-ratio:1/1;object-fit:cover}
.hvdb-book-product-page .hvdb-related-book__body{padding:18px}
.hvdb-book-product-page .hvdb-related-book .button{width:100%;text-align:center;border-radius:12px}
@media(max-width:820px){
 .hvdb-book-product-page .hvdb-book-purchase-assurance{grid-template-columns:1fr}
 .hvdb-book-product-page .hvdb-book-fit-value-grid{grid-template-columns:1fr}
 .hvdb-book-product-page .hvdb-book-story-section{padding:24px}
 .hvdb-book-product-page .hvdb-related-books__heading{align-items:flex-start;flex-direction:column}
}


/* rc4.134 conversion refinement: shorter, flatter, more editorial. */
.hvdb-book-product-page .hvdb-book-product-page__shell{padding-bottom:56px}
.hvdb-book-product-page .hvdb-book-detail-heading{margin-top:56px;margin-bottom:22px}
.hvdb-book-product-page .hvdb-book-detail-heading span{max-width:620px;display:block;margin:8px auto 0}
.hvdb-book-product-page .hvdb-book-nav{position:sticky;top:16px;z-index:8;max-width:max-content;margin-bottom:28px;padding:7px 10px;gap:4px}
.admin-bar .hvdb-book-product-page .hvdb-book-nav{top:48px}
.hvdb-book-product-page .hvdb-book-story-section{margin-bottom:18px;padding:28px 30px;border-radius:20px;box-shadow:none}
.hvdb-book-product-page .hvdb-book-story-section:nth-of-type(even),
.hvdb-book-product-page .hvdb-book-story-section:nth-of-type(odd){background:#fff}
.hvdb-book-product-page .hvdb-book-story-section--intro,
.hvdb-book-product-page .hvdb-book-story-section--author,
.hvdb-book-product-page .hvdb-book-story-section--shipping{background:transparent;border-color:transparent;border-radius:0;padding-left:8px;padding-right:8px}
.hvdb-book-product-page .hvdb-book-section-heading{margin-bottom:18px}
.hvdb-book-product-page .hvdb-book-section-heading h2{font-size:clamp(26px,2.25vw,36px)}
.hvdb-book-product-page .hvdb-book-volume-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.hvdb-book-product-page .hvdb-book-volume-card{min-height:0;padding:16px;border-radius:14px;box-shadow:none}
.hvdb-book-product-page .hvdb-book-volume-card h3{font-size:16px;line-height:1.45}
.hvdb-book-product-page .hvdb-book-more-contents{margin-top:14px;border:1px solid #eadfce;border-radius:14px;background:#fffaf3}
.hvdb-book-product-page .hvdb-book-more-contents summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px 18px;cursor:pointer;font-weight:800;color:#271d16;list-style:none}
.hvdb-book-product-page .hvdb-book-more-contents summary::-webkit-details-marker{display:none}
.hvdb-book-product-page .hvdb-book-more-contents summary span{color:#a30f2d;font-size:22px}
.hvdb-book-product-page .hvdb-book-more-contents[open] summary span{transform:rotate(45deg)}
.hvdb-book-product-page .hvdb-book-more-contents__list{padding:0 18px 14px;columns:2;column-gap:28px}
.hvdb-book-product-page .hvdb-book-more-contents__list p{break-inside:avoid;margin:0 0 10px;line-height:1.5}
.hvdb-book-product-page .hvdb-book-fit-value-grid{gap:14px}
.hvdb-book-product-page .hvdb-book-fit-value-grid>div{padding:20px;border-radius:15px;background:#fffdf9}
.hvdb-book-product-page .hvdb-book-fit-value-grid ul{gap:9px}
.hvdb-book-product-page .hvdb-book-author-card{max-width:820px}
.hvdb-book-product-page .hvdb-book-policy-grid{max-width:920px;gap:14px}
.hvdb-book-product-page .hvdb-book-policy-grid article{padding:20px;box-shadow:none}
.hvdb-book-product-page .hvdb-book-story-section--faq{max-width:820px}
.hvdb-book-product-page .hvdb-book-faq-list details{border-radius:12px;box-shadow:none}
.hvdb-book-product-page .hvdb-related-books{margin-top:30px}
.hvdb-book-product-page .hvdb-related-book{box-shadow:none}
.hvdb-book-product-page .hvdb-related-book:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(48,32,16,.08)}
.hvdb-book-product-page .hvdb-book-sticky-cta{min-height:68px;padding:10px 14px;border-radius:16px;box-shadow:0 16px 36px rgba(50,17,24,.18)}
.hvdb-book-product-page .hvdb-book-sticky-cta small{max-width:280px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
@media(max-width:820px){
 .hvdb-book-product-page .hvdb-book-nav{position:static;max-width:100%;overflow-x:auto;justify-content:flex-start}
 .hvdb-book-product-page .hvdb-book-story-section{padding:22px 20px}
 .hvdb-book-product-page .hvdb-book-story-section--intro,
 .hvdb-book-product-page .hvdb-book-story-section--author,
 .hvdb-book-product-page .hvdb-book-story-section--shipping{padding-left:0;padding-right:0}
 .hvdb-book-product-page .hvdb-book-volume-grid{grid-template-columns:1fr}
 .hvdb-book-product-page .hvdb-book-more-contents__list{columns:1}
}