/* The book: the site's quiet typography, with the finished cobalt cover. */
.book-eyebrow {
  font: 500 0.69rem/1.6 var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.075em;
  color: var(--fg-secondary);
  margin-bottom: 14px;
}
.book-cover {
  display: block;
  width: 100%;
  height: auto;
  box-shadow: 0 14px 30px #0003, 0 2px 5px #0002;
}
.book-cover-link { display: block; }
.book-cover-link:hover { transform: translateY(-2px); }
.book-byline { color: var(--fg-secondary); font-size: 0.85rem; }
.book-buy-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.book-buy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  min-height: 46px;
  padding: 11px 16px;
  border: 1px solid #3456d8;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.4;
  text-align: center;
}
.book-buy-primary { background: #2445c9; color: #fff; }
.book-buy-secondary { border-color: var(--fg-tertiary); color: var(--fg); }
.book-buy:hover { text-decoration: none; background: #1835aa; border-color: #1835aa; color: #fff; }
.book-buy:focus-visible, .book-text-link:focus-visible, .book-cover-link:focus-visible {
  outline: 3px solid #829bff;
  outline-offset: 5px;
}
.book-text-link { display: inline-block; margin-top: 18px; text-decoration: underline; text-underline-offset: 4px; font-size: 0.84rem; }
.book-feature {
  display: grid;
  grid-template-columns: 164px minmax(0, 1fr);
  align-items: center;
  gap: 30px;
  padding: 32px 0 40px;
  margin-bottom: 24px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.book-feature h2 { font: 600 1.65rem/1.15 Georgia, serif; letter-spacing: -0.025em; margin-bottom: 12px; }
.book-feature .book-byline { margin-bottom: 14px; }
.book-feature-copy > p:not([class]) { font-size: 0.93rem; color: var(--fg-secondary); }
.book-feature .book-buy-links { gap: 8px; margin-top: 20px; }
.book-feature .book-buy { padding: 10px 12px; font-size: 0.79rem; gap: 10px; }
.book-container { max-width: 1040px; }
.book-hero { display: grid; grid-template-columns: 290px minmax(0, 1fr); gap: 68px; align-items: center; padding: 8px 0 64px; }
.book-artwork { padding: 6px 0; }
.book-hero h1 { font: 500 clamp(2rem, 4.5vw, 2.9rem)/1.08 Georgia, serif; letter-spacing: -0.035em; margin: 0 0 20px; }
.book-hero h1 span { font-size: 0.58em; font-style: italic; letter-spacing: 0; }
.book-subtitle { font: italic 1.12rem/1.45 Georgia, serif; margin-bottom: 20px; max-width: 410px; }
.book-hero .book-byline { margin-bottom: 22px; }
.book-hero .book-byline strong { color: var(--fg); font-weight: 500; }
.book-lead { font-size: 0.96rem; line-height: 1.7; color: var(--fg-secondary); max-width: 470px; }
.book-store-note { color: var(--fg-secondary); font-size: 0.75rem; margin-top: 12px; }
.book-introduction { border-top: 1px solid var(--border); padding: 52px 0 44px; max-width: 740px; }
.book-page h2 { font: 500 1.9rem/1.18 Georgia, serif; letter-spacing: -0.02em; margin-bottom: 22px; }
.book-introduction > p:not(.book-eyebrow) { color: var(--fg-secondary); margin-bottom: 18px; line-height: 1.8; }
.book-inside { padding: 8px 0 48px; }
.book-topic-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; margin: 30px 0; }
.book-topic-grid article { border-top: 1px solid var(--border); padding-top: 20px; }
.book-topic-number { color: var(--fg-secondary); font: 0.7rem/1.5 var(--font-mono); }
.book-topic-grid h3 { font-size: 1rem; font-weight: 600; margin: 14px 0 10px; }
.book-topic-grid p { color: var(--fg-secondary); font-size: 0.9rem; line-height: 1.75; }
.book-process-note { font-size: 0.85rem; color: var(--fg-secondary); padding: 20px 24px; border-left: 3px solid #4969df; background: var(--bg-elevated); }
.book-editions { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 36px 0; display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.book-editions h2 { margin-bottom: 16px; }
.book-editions p:not(.book-eyebrow) { font-size: 0.9rem; color: var(--fg-secondary); }
.book-editions .book-buy-links { margin: 0; }
.book-edition-meta { margin-top: 16px; font-size: 0.75rem !important; }
.book-attestation { margin-top: 24px; color: var(--fg-secondary); font-size: 0.8rem; max-width: 660px; }
.book-attestation a { color: var(--fg); text-decoration: underline; text-underline-offset: 3px; }
.nav-links a[aria-current="page"] { color: var(--fg); text-decoration: underline; text-underline-offset: 5px; }
/* The embedded footer badge supplies inline sizing; let it fit a narrow phone. */
.hq-site-attestation .hq-embed-badge { max-width: 100% !important; white-space: normal !important; overflow-wrap: anywhere; }
.hq-site-attestation .hq-embed-badge > span:nth-child(2) { min-width: 0; }
@media (max-width: 800px) {
  .book-hero { grid-template-columns: 240px minmax(0, 1fr); gap: 36px; }
  .book-topic-grid { gap: 24px; }
}
@media (max-width: 600px) {
  .book-hero { grid-template-columns: 1fr; gap: 36px; padding-bottom: 40px; }
  .book-artwork { max-width: 240px; margin: 0 auto; width: 100%; }
  .book-hero h1 { font-size: 2.55rem; }
  .book-topic-grid { grid-template-columns: 1fr; gap: 24px; }
  .book-introduction { padding-top: 36px; }
  .book-page h2 { font-size: 1.65rem; }
  .book-editions { gap: 24px; }
  .book-feature { grid-template-columns: 112px minmax(0, 1fr); gap: 24px; align-items: start; }
  .book-feature h2 { font-size: 1.45rem; }
  .book-feature .book-eyebrow { font-size: 0.62rem; margin-bottom: 10px; }
  .book-feature .book-byline { font-size: 0.77rem; }
  .book-feature .book-buy-links { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 380px) {
  .book-feature { grid-template-columns: 1fr; }
  .book-feature .book-cover-link { width: 150px; margin: 0 auto; }
  .book-feature .book-buy-links { flex-direction: row; }
}