:root {
  --ink: #102132;
  --muted: #5b6874;
  --paper: #f7f1e4;
  --paper-2: #efe4ce;
  --navy: #07182a;
  --navy-2: #0c2945;
  --gold: #c79a45;
  --gold-soft: #e5c783;
  --forest: #173c32;
  --line: rgba(16, 33, 50, .16);
  --white: #fff;
  --shadow: 0 24px 60px rgba(7, 24, 42, .16);
  --radius: 18px;
  --wrap: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: #fbfaf7; font: 17px/1.65 Georgia, 'Times New Roman', serif; }
a { color: #0a4b75; text-underline-offset: .18em; }
a:hover { color: #072f4b; }
img { max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; }
.wrap { width: min(calc(100% - 2rem), var(--wrap)); margin-inline: auto; }
.skip-link { position: fixed; top: .5rem; left: .5rem; z-index: 999; transform: translateY(-150%); padding: .65rem 1rem; background: white; color: black; border-radius: .35rem; }
.skip-link:focus { transform: none; }
.site-header { position: sticky; top: 0; z-index: 20; background: rgba(7,24,42,.96); color: white; border-bottom: 1px solid rgba(229,199,131,.25); backdrop-filter: blur(12px); }
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.brand { display: flex; align-items: center; gap: .8rem; color: white; text-decoration: none; letter-spacing: .02em; }
.brand-mark { color: var(--gold-soft); font-size: 1.75rem; }
.brand strong, .brand small { display: block; }
.brand small { margin-top: .1rem; color: #c7d0d8; font: 12px/1.2 system-ui, sans-serif; text-transform: uppercase; letter-spacing: .14em; }
.primary-nav { display: flex; align-items: center; gap: 1.25rem; font: 600 14px/1 system-ui, sans-serif; }
.primary-nav a { color: #eef3f6; text-decoration: none; }
.primary-nav a:hover, .primary-nav a:focus-visible { color: var(--gold-soft); }
.nav-toggle { display: none; padding: .55rem .8rem; color: white; background: transparent; border: 1px solid rgba(255,255,255,.35); border-radius: .4rem; }
.hero { position: relative; overflow: hidden; padding: clamp(4rem, 8vw, 8rem) 0; color: white; background: radial-gradient(circle at 20% 10%, rgba(199,154,69,.27), transparent 28%), linear-gradient(135deg, #061321, #0a2a45 62%, #173c32); }
.hero::after { content: ''; position: absolute; inset: auto -10% -160px 35%; height: 340px; transform: rotate(-5deg); background: linear-gradient(160deg, transparent 30%, rgba(4,16,27,.72) 31% 56%, rgba(23,60,50,.88) 57%); opacity: .9; }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0,1.15fr) minmax(260px,.75fr); gap: clamp(2.5rem,6vw,6rem); align-items: center; }
.eyebrow { margin: 0 0 .85rem; color: var(--gold-soft); font: 700 13px/1.2 system-ui, sans-serif; text-transform: uppercase; letter-spacing: .18em; }
h1, h2, h3 { font-weight: 500; line-height: 1.08; }
h1 { margin: 0; font-size: clamp(2.75rem, 7vw, 6.4rem); letter-spacing: -.035em; }
h2 { margin-top: 0; font-size: clamp(2rem, 4vw, 3.3rem); }
h3 { font-size: 1.45rem; }
.hero .lede { max-width: 760px; margin: 1.4rem 0 0; color: #dbe5eb; font-size: clamp(1.1rem,2vw,1.35rem); }
.hero-actions, .button-row { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .45rem; min-height: 46px; padding: .7rem 1.1rem; border: 1px solid transparent; border-radius: 999px; text-decoration: none; font: 700 14px/1 system-ui, sans-serif; }
.button.primary { background: var(--gold-soft); color: #17202a; }
.button.secondary { border-color: rgba(255,255,255,.38); color: white; background: rgba(255,255,255,.05); }
.button.ink { background: var(--navy); color: white; }
.button.outline { border-color: var(--line); color: var(--ink); background: transparent; }
.cover-stack { position: relative; min-height: 430px; }
.cover-stack img { position: absolute; width: min(72%, 315px); border-radius: 7px; box-shadow: 0 28px 60px rgba(0,0,0,.42); }
.cover-stack img:first-child { right: 2%; top: 0; transform: rotate(3deg); }
.cover-stack img:last-child { left: 2%; bottom: 0; transform: rotate(-5deg); }
.section { padding: clamp(3.5rem,7vw,7rem) 0; }
.section.tinted { background: var(--paper); border-block: 1px solid #e8dcc5; }
.section.dark { color: white; background: var(--navy); }
.section-heading { max-width: 780px; margin-bottom: 2rem; }
.section-heading p { color: var(--muted); }
.dark .section-heading p { color: #cad4dc; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1.4rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 1.2rem; }
.card { background: white; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 12px 35px rgba(7,24,42,.07); overflow: hidden; }
.card-body { padding: 1.35rem; }
.card h3 { margin: .2rem 0 .65rem; }
.card p { color: var(--muted); }
.book-card { display: grid; grid-template-columns: 150px minmax(0,1fr); }
.book-card img { width: 100%; height: 100%; object-fit: cover; }
.meta-line { color: var(--muted); font: 14px/1.5 system-ui, sans-serif; }
.badges { display: flex; flex-wrap: wrap; gap: .45rem; margin-bottom: .8rem; }
.badge { display: inline-flex; align-items: center; padding: .3rem .55rem; border-radius: 999px; color: #17304a; background: #e5edf3; font: 700 12px/1 system-ui, sans-serif; }
.badge.gold { color: #4b3510; background: #f4e3b8; }
.badge.green { color: #143c2f; background: #dcebe3; }
.badge.warn { color: #70420d; background: #fff0c9; }
.page-hero { padding: 3.7rem 0 3rem; color: white; background: linear-gradient(125deg, var(--navy), var(--navy-2)); border-bottom: 4px solid var(--gold); }
.page-hero h1 { font-size: clamp(2.5rem,5vw,4.8rem); }
.page-hero .lede { max-width: 820px; color: #d6e0e7; }
.breadcrumbs { margin-bottom: 1rem; color: #bfcbd3; font: 13px/1.4 system-ui, sans-serif; }
.breadcrumbs a { color: #e7d6ad; }
.book-layout { display: grid; grid-template-columns: minmax(230px,340px) minmax(0,1fr); gap: clamp(2rem,5vw,5rem); align-items: start; }
.cover-panel { position: sticky; top: 104px; }
.cover-panel img { display: block; width: 100%; border-radius: 8px; box-shadow: var(--shadow); }
.content-panel > section { padding-block: 1.4rem; border-bottom: 1px solid var(--line); }
.content-panel > section:first-child { padding-top: 0; }
.details { margin: 0; }
.detail-row { display: grid; grid-template-columns: 180px minmax(0,1fr); gap: 1rem; padding: .72rem 0; border-top: 1px solid var(--line); }
.detail-row:first-child { border-top: 0; }
.detail-row dt { color: var(--muted); font: 700 13px/1.5 system-ui, sans-serif; text-transform: uppercase; letter-spacing: .07em; }
.detail-row dd { margin: 0; }
.citation-box { position: relative; padding: 1.2rem 1.25rem; background: #f2eee5; border-left: 4px solid var(--gold); border-radius: 0 10px 10px 0; }
.citation-box p { margin: 0; }
.copy-button { margin-top: .8rem; padding: .5rem .75rem; border: 1px solid var(--line); border-radius: .4rem; background: white; cursor: pointer; font: 700 13px/1 system-ui, sans-serif; }
.notice { padding: 1rem 1.1rem; border: 1px solid #e7c66b; border-radius: 10px; background: #fff5d8; }
.notice strong { display: block; }
.chapter-list { display: grid; gap: .75rem; }
.chapter-item { display: grid; grid-template-columns: 70px minmax(0,1fr) auto; gap: 1rem; align-items: center; padding: 1rem 1.1rem; background: white; border: 1px solid var(--line); border-radius: 12px; text-decoration: none; color: var(--ink); }
.chapter-number { color: var(--gold); font: 700 13px/1 system-ui, sans-serif; letter-spacing: .08em; }
.chapter-item small { color: var(--muted); font-family: system-ui, sans-serif; }
.policy-nav { display: flex; flex-wrap: wrap; gap: .65rem; margin: 1.4rem 0 2rem; }
.policy-nav a { padding: .55rem .75rem; border-radius: 999px; background: #edf1f3; text-decoration: none; font: 700 13px/1 system-ui, sans-serif; }
.prose { max-width: 850px; }
.prose h2 { margin-top: 2.4rem; font-size: 2.1rem; }
.prose h3 { margin-top: 1.8rem; }
.prose li { margin: .45rem 0; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: .8rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { font: 700 13px/1.4 system-ui, sans-serif; text-transform: uppercase; letter-spacing: .06em; }
.site-footer { color: #d6dee5; background: #04101c; padding: 3rem 0 1.3rem; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1.2fr 1fr; gap: 2rem; }
.footer-grid strong { color: white; }
.footer-grid a { display: block; margin-top: .5rem; color: #cbd7df; text-decoration: none; }
.footer-grid p { color: #aebcc7; }
.footer-bottom { display: flex; justify-content: space-between; gap: 1rem; margin-top: 2.2rem; padding-top: 1.2rem; border-top: 1px solid rgba(255,255,255,.14); color: #97a8b5; font: 12px/1.4 system-ui, sans-serif; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
code { padding: .12rem .3rem; background: #edf1f3; border-radius: .25rem; font-size: .9em; }
pre { overflow-x: auto; padding: 1rem; color: #eaf1f5; background: #07182a; border-radius: 10px; }
@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }
  .primary-nav { position: absolute; top: 76px; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: .75rem 1rem 1rem; background: #07182a; border-bottom: 1px solid rgba(255,255,255,.15); }
  .primary-nav.open { display: flex; }
  .primary-nav a { padding: .8rem 0; }
  .hero-grid, .book-layout { grid-template-columns: 1fr; }
  .cover-stack { min-height: 500px; max-width: 500px; width: 100%; margin-inline: auto; }
  .cover-panel { position: static; max-width: 360px; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 650px) {
  body { font-size: 16px; }
  .brand small { display: none; }
  .grid-2, .grid-3, .footer-grid { grid-template-columns: 1fr; }
  .book-card { grid-template-columns: 110px minmax(0,1fr); }
  .detail-row { grid-template-columns: 1fr; gap: .25rem; }
  .chapter-item { grid-template-columns: 55px minmax(0,1fr); }
  .chapter-item > :last-child { grid-column: 2; }
  .footer-bottom { flex-direction: column; }
  .cover-stack { min-height: 420px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}