/* Leading While Wounded: palette drawn from the cover:
   warm cream, peach, terracotta, espresso and soft gold. */
:root {
  --cream: #f7efe4;
  --sand: #efe1cf;
  --peach: #e9c6a5;
  --terracotta: #b4623d;
  --terracotta-dark: #8f4a2c;
  --gold: #c69c5d;
  --espresso: #2a1f1a;
  --ink: #3b2e27;
  --muted: #6f5f55;
  --white: #fffaf4;

  --serif-display: "Playfair Display", Georgia, serif;
  --serif: "Source Serif 4", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, sans-serif;

  --radius: 4px;
  --max: 1120px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font: 400 1.125rem/1.7 var(--serif);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--terracotta-dark); }
h1, h2, h3 { font-family: var(--serif-display); color: var(--espresso); line-height: 1.15; margin: 0 0 .5em; }
h2 { font-size: clamp(2rem, 4vw, 2.9rem); font-weight: 600; }
h2 em { color: var(--terracotta); font-weight: 500; }
h3 { font-size: 1.35rem; font-weight: 600; }
p { margin: 0 0 1em; }

.wrap { width: min(100% - 32px, var(--max)); margin-inline: auto; }
.center { text-align: center; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 16px; z-index: 100; background: var(--espresso); color: var(--white); padding: .5rem 1rem; }

.eyebrow {
  font: 600 .78rem/1 var(--sans);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--terracotta);
  margin-bottom: 1.1rem;
}

/* Buttons */
.btn {
  display: inline-block;
  font: 600 .95rem/1 var(--sans);
  letter-spacing: .02em;
  text-decoration: none;
  padding: 1rem 1.6rem;
  border-radius: var(--radius);
  background: var(--terracotta);
  color: var(--white);
  border: 1.5px solid var(--terracotta);
  transition: background .2s, color .2s, transform .2s;
}
.btn:hover { background: var(--terracotta-dark); border-color: var(--terracotta-dark); transform: translateY(-1px); }
.btn:focus-visible, .check:focus-visible, .nav a:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
.btn--small { padding: .65rem 1.1rem; font-size: .85rem; }
.btn--ghost { background: transparent; color: var(--terracotta-dark); }
.btn--ghost:hover { background: var(--terracotta); color: var(--white); }
.btn--light { background: var(--cream); color: var(--espresso); border-color: var(--cream); }
.btn--light:hover { background: var(--peach); border-color: var(--peach); }
.btn--ghost-light { background: transparent; color: var(--cream); border-color: rgba(247,239,228,.6); }
.btn--ghost-light:hover { background: rgba(247,239,228,.12); }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(247,239,228,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(42,31,26,.08);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.nav__brand { font: 800 1.15rem/1 var(--serif-display); color: var(--espresso); text-decoration: none; letter-spacing: .04em; text-transform: uppercase; }
.nav__brand em { font-style: italic; font-weight: 500; text-transform: none; color: var(--terracotta); letter-spacing: 0; }
.nav__links { display: flex; align-items: center; gap: 1.8rem; }
.nav__links a:not(.btn) { font: 500 .92rem/1 var(--sans); color: var(--ink); text-decoration: none; }
.nav__links a:not(.btn):hover { color: var(--terracotta); }
.nav__toggle { display: none; background: none; border: 0; width: 44px; height: 44px; cursor: pointer; position: relative; }
.nav__toggle span { position: absolute; left: 11px; right: 11px; height: 2px; background: var(--espresso); transition: transform .25s; }
.nav__toggle span:first-child { top: 17px; }
.nav__toggle span:last-child { top: 25px; }
.nav__toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

/* Art-deco sunburst motif (echoes the cover) */
.deco {
  position: absolute; inset: 0; pointer-events: none; overflow: hidden;
  background:
    repeating-conic-gradient(from 180deg at 72% 110%, rgba(198,156,93,.12) 0deg 3deg, transparent 3deg 12deg);
  -webkit-mask-image: radial-gradient(circle at 72% 100%, #000 0 55%, transparent 75%);
          mask-image: radial-gradient(circle at 72% 100%, #000 0 55%, transparent 75%);
}
.deco--light {
  background: repeating-conic-gradient(from 180deg at 50% 120%, rgba(247,239,228,.07) 0deg 3deg, transparent 3deg 12deg);
  -webkit-mask-image: radial-gradient(circle at 50% 110%, #000 0 50%, transparent 80%);
          mask-image: radial-gradient(circle at 50% 110%, #000 0 50%, transparent 80%);
}

/* Hero */
.hero {
  position: relative;
  background: linear-gradient(160deg, var(--cream) 0%, var(--sand) 55%, var(--peach) 130%);
  padding: clamp(3rem, 8vw, 6.5rem) 0 clamp(3.5rem, 8vw, 6rem);
  overflow: hidden;
}
.hero__grid { position: relative; display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(2rem, 6vw, 5rem); align-items: center; }
.hero__title {
  font: 800 clamp(3.2rem, 8.5vw, 6.4rem)/.92 var(--serif-display);
  text-transform: uppercase;
  letter-spacing: .01em;
  width: fit-content;
  margin: 0 0 1.4rem;
}
/* "WHILE" styled after the cover: small bold gold caps, centered,
   with a thin gold rule on each side. */
.hero__title span {
  display: flex;
  align-items: center;
  gap: .55em;
  font: 800 .4em/1 var(--serif-display);
  color: #a8772b;
  letter-spacing: .16em;
  margin: .32em 0 .28em;
}
.hero__title span::before,
.hero__title span::after {
  content: "";
  flex: 1;
  height: 2px;
  background: #b5853a;
}
.hero__title span::after { margin-left: -.16em; } /* offset trailing letter-spacing */
.hero__subtitle { font: italic 400 clamp(1.15rem, 2vw, 1.4rem)/1.45 var(--serif); color: var(--muted); max-width: 30ch; margin-bottom: 1.6rem; }
.hero__lede { font-size: 1.2rem; color: var(--espresso); border-left: 3px solid var(--gold); padding-left: 1rem; max-width: 34ch; margin-bottom: 2rem; }
.hero__cta { display: flex; flex-wrap: wrap; gap: .8rem; margin-bottom: 1.8rem; }
.hero__by { font: 600 .8rem/1.4 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin: 0; }
.hero__editor { font: 400 .72rem/1.4 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin: .45rem 0 0; }

.hero__cover { margin: 0; justify-self: center; }

/* Stat band */
.stat { background: var(--espresso); color: var(--cream); padding: clamp(2.5rem, 5vw, 3.5rem) 0; }
.stat__inner { display: grid; grid-template-columns: auto 1fr; gap: clamp(1.5rem, 4vw, 3.5rem); align-items: center; }
.stat__num { font: 800 clamp(4rem, 10vw, 6.5rem)/1 var(--serif-display); color: var(--gold); margin: 0; }
.stat__text { font-size: clamp(1.1rem, 2vw, 1.35rem); margin: 0; max-width: 52ch; color: #e9dccb; }
.stat__text strong { color: var(--white); font-weight: 600; }

/* Book */
.book { padding: clamp(4rem, 9vw, 7rem) 0; }
.book__grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(2rem, 6vw, 5rem); align-items: start; margin-bottom: clamp(3rem, 7vw, 5rem); }
.prose p { max-width: 60ch; }
.dropcap { font-size: 1.3rem; color: var(--espresso); }
.dropcap::first-letter { float: left; font: 800 4.1rem/.85 var(--serif-display); color: var(--terracotta); padding: .35rem .6rem 0 0; }

.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.pillar { background: var(--white); padding: 2rem 1.75rem; border-top: 3px solid var(--terracotta); border-radius: var(--radius); box-shadow: 0 1px 2px rgba(42,31,26,.06); }
.pillar__num { display: block; font: 600 .8rem/1 var(--sans); letter-spacing: .16em; color: var(--gold); margin-bottom: 1rem; }
.pillar p { color: var(--muted); font-size: 1.02rem; margin: 0; }

/* Quote */
.quote { background: var(--sand); padding: clamp(3.5rem, 8vw, 6rem) 0; text-align: center; }
.quote blockquote { margin: 0 auto; max-width: 15em; font-size: clamp(1.9rem, 4.5vw, 3.1rem); }
.quote blockquote p { font-size: 1em; }
.quote p { font: italic 500 clamp(1.9rem, 4.5vw, 3.1rem)/1.25 var(--serif-display); color: var(--espresso); margin: 0; }
.quote blockquote::before, .quote blockquote::after {
  content: ""; display: block; width: 64px; height: 1.5px; background: var(--gold); margin: 0 auto 1.8rem;
}
.quote blockquote::after { margin: 1.8rem auto 0; }

/* Reflect */
.reflect { padding: clamp(4rem, 9vw, 7rem) 0; }
.reflect__grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(2rem, 6vw, 5rem); align-items: start; }
.reflect__intro p:last-child { color: var(--muted); }
.reflect__panel { background: var(--white); border-radius: 6px; padding: clamp(1.25rem, 3vw, 2rem); box-shadow: 0 20px 40px -24px rgba(42,31,26,.3); }
.checks { list-style: none; margin: 0 0 1.25rem; padding: 0; display: grid; gap: .6rem; }
.check {
  width: 100%; text-align: left; cursor: pointer;
  font: 400 1.05rem/1.45 var(--serif); color: var(--ink);
  background: var(--cream); border: 1.5px solid transparent; border-radius: var(--radius);
  padding: .95rem 1rem .95rem 3rem; position: relative;
  transition: background .2s, border-color .2s;
}
.check::before {
  content: ""; position: absolute; left: 1rem; top: 50%; width: 18px; height: 18px; transform: translateY(-50%);
  border: 1.5px solid var(--gold); border-radius: 50%; background: var(--white); transition: all .2s;
}
.check:hover { border-color: var(--peach); }
.check[aria-pressed="true"] { background: #f3ddc8; border-color: var(--terracotta); }
.check[aria-pressed="true"]::before { background: var(--terracotta); border-color: var(--terracotta); box-shadow: inset 0 0 0 3px var(--white); }
.reflect__result { border-top: 1px solid var(--sand); padding-top: 1.1rem; display: flex; gap: 1.2rem; align-items: baseline; }
.reflect__count { font: 600 .85rem/1 var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--terracotta); white-space: nowrap; margin: 0; }
#reflect-msg { margin: 0; font-style: italic; color: var(--espresso); }

/* Authors */
.authors { background: var(--sand); padding: clamp(4rem, 9vw, 7rem) 0; }
.authors__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; margin-top: 2.5rem; }
.author { background: var(--white); padding: 2.25rem 2rem; border-radius: 6px; text-align: center; }
.author__mark {
  width: 84px; height: 84px; margin: 0 auto 1.25rem; border-radius: 50%;
  display: grid; place-items: center;
  font: 600 1.5rem/1 var(--serif-display); color: var(--white);
  background: linear-gradient(135deg, var(--terracotta), var(--gold));
}
.author__role { font: 600 .75rem/1 var(--sans); letter-spacing: .16em; text-transform: uppercase; color: var(--terracotta); }
.author p:not(.author__role):not(.author__links) { color: var(--muted); margin: 0; }
.editor { text-align: center; margin: 2rem 0 0; color: var(--muted); }

/* Details */
.details { padding: clamp(4rem, 8vw, 6rem) 0; }
.details__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin: 2rem auto 0; max-width: 860px; border-top: 1px solid var(--peach); }
.details__grid div { padding: 1.4rem 1rem; border-bottom: 1px solid var(--peach); text-align: center; }
.details__grid dt { font: 600 .75rem/1 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-bottom: .55rem; }
.details__grid dd { margin: 0; font-size: 1.1rem; color: var(--espresso); }

/* Buy */
.buy { position: relative; overflow: hidden; background: linear-gradient(160deg, var(--espresso), #47302a 70%, var(--terracotta-dark) 140%); color: var(--cream); padding: clamp(4.5rem, 10vw, 7.5rem) 0; text-align: center; }
.buy__inner { position: relative; }
.buy h2 { color: var(--white); max-width: 18ch; margin-inline: auto; }
.buy p { font: italic 400 1.3rem/1.5 var(--serif); color: var(--peach); margin-bottom: 2.2rem; }
.center-row { justify-content: center; margin: 0; }

/* Footer */
.footer { background: var(--espresso); color: #b9a898; padding: 2rem 0; font: 400 .88rem/1.5 var(--sans); border-top: 1px solid rgba(247,239,228,.08); }
.footer__inner { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center; }
.footer p { margin: 0; }
.footer__brand { font: 800 1rem/1 var(--serif-display) !important; color: var(--cream); text-transform: uppercase; letter-spacing: .04em; }
.footer__brand em { color: var(--gold); text-transform: none; font-weight: 500; }
.footer a { color: var(--cream); text-decoration: none; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* Responsive */
@media (max-width: 900px) {
  .hero__grid, .book__grid, .reflect__grid { grid-template-columns: 1fr; }
  .hero__cover { order: -1; }
  .pillars { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .nav__toggle { display: block; }
  .nav__links {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--cream); border-bottom: 1px solid rgba(42,31,26,.1);
    padding: .5rem 16px 1rem; display: none;
  }
  .nav__links.is-open { display: flex; }
  .nav__links a:not(.btn) { padding: .9rem 0; border-bottom: 1px solid var(--sand); font-size: 1rem; }
  .nav__links .btn { margin-top: 1rem; text-align: center; }
  .stat__inner { grid-template-columns: 1fr; text-align: center; }
  .stat__text { margin-inline: auto; }
  .authors__grid { grid-template-columns: 1fr; }
  .details__grid { grid-template-columns: repeat(2, 1fr); }
  .reflect__result { flex-direction: column; gap: .5rem; }
  .footer__inner { flex-direction: column; text-align: center; }
}
@media (max-width: 420px) {
  .hero__cta .btn { width: 100%; text-align: center; }
}

/* ---------- v2 additions ---------- */

/* Front/back cover flip */
.flip-toggle { display: flex; justify-content: center; gap: .4rem; margin-top: 1.6rem; }
.flip-toggle button {
  font: 600 .75rem/1 var(--sans); letter-spacing: .14em; text-transform: uppercase;
  background: transparent; color: var(--muted); border: 1px solid rgba(42,31,26,.2);
  padding: .55rem .9rem; border-radius: 999px; cursor: pointer; transition: all .2s;
}
.flip-toggle button[aria-pressed="true"] { background: var(--espresso); color: var(--cream); border-color: var(--espresso); }
.flip-toggle button:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

/* What if */
.whatif { background: var(--sand); padding: clamp(3rem, 7vw, 5rem) 0; }
.whatif__list { list-style: none; margin: 0 auto; padding: 0; max-width: 820px; display: grid; gap: 1.4rem; text-align: center; }
.whatif__list li { font: 500 clamp(1.4rem, 3vw, 2rem)/1.3 var(--serif-display); color: var(--espresso); }
.whatif__list em { color: var(--terracotta); }
.whatif__list li + li::before { content: "◆"; display: block; font-size: .5rem; color: var(--gold); margin-bottom: 1.4rem; }

/* Trade pillars */
.pillar { text-align: center; }
.pillar__from { font: italic 400 1.15rem/1.2 var(--serif); color: var(--muted); text-decoration: line-through; text-decoration-color: var(--terracotta); margin: 0 0 .3rem !important; }
.pillar__arrow { display: block; color: var(--gold); font: 400 1.2rem/1 var(--sans); margin-bottom: .5rem; }
.pillar h3 { font-size: 1.6rem; color: var(--terracotta-dark); }

/* Author bios */
.author { text-align: left; }
.author__mark { margin: 0 0 1.25rem; }
.author h3 { margin-bottom: .35rem; }
.author p:not(.author__role):not(.author__links) { font-size: 1.02rem; line-height: 1.7; }
.author--editor {
  margin-top: 1.5rem; display: grid; grid-template-columns: auto 1fr; gap: 1.5rem; align-items: start;
  background: transparent; border: 1px solid var(--peach); padding: 2rem;
}
.author__mark--small { width: 64px; height: 64px; font-size: 1.15rem; margin: 0; background: linear-gradient(135deg, var(--gold), var(--peach)); color: var(--espresso); }

/* Author photos */
.author__photo {
  display: block; width: 112px; height: 112px; margin: 0 0 1.25rem;
  border-radius: 50%; object-fit: cover; object-position: center 20%;
  border: 3px solid var(--white); box-shadow: 0 0 0 2px var(--gold);
}
.author__photo--small { width: 84px; height: 84px; margin: 0; box-shadow: 0 0 0 2px var(--peach); }

/* Buy */
.buy__passon { font: 400 1rem/1.6 var(--sans) !important; font-style: normal !important; color: #cdb9a6 !important; max-width: 46ch; margin: -1rem auto 2.2rem !important; }

@media (max-width: 760px) {
  .author--editor { grid-template-columns: 1fr; }
}
.hero__cover { width: 100%; max-width: 380px; }

/* Author social links */
.author p.author__links { color: inherit; margin: 1rem 0 0; font: 600 .8rem/1 var(--sans); letter-spacing: .12em; text-transform: uppercase; }
.author__links a { color: var(--terracotta); text-decoration: none; border-bottom: 1px solid currentColor; padding-bottom: 2px; }
.author__links a:hover { color: var(--terracotta-dark); }

/* Praise */
.praise { background: var(--white); padding: clamp(4rem, 9vw, 7rem) 0; }
.praise__grid { columns: 2; column-gap: 1.5rem; margin-top: 2.5rem; }
.praise__card {
  break-inside: avoid; margin: 0 0 1.5rem; padding: 2rem 2rem 1.75rem;
  background: var(--cream); border-top: 3px solid var(--gold); border-radius: var(--radius);
}
.praise__card blockquote { margin: 0; position: relative; }
.praise__card blockquote::before {
  content: "\201C"; display: block; font: 700 3.5rem/.6 var(--serif-display);
  color: var(--terracotta); margin-bottom: .6rem;
}
.praise__card p { font-size: 1.02rem; line-height: 1.7; color: var(--ink); margin: 0 0 1rem; }
.praise__card p:last-child { margin-bottom: 0; }
.praise__card figcaption { border-bottom: 1px solid var(--peach); padding-bottom: 1rem; margin-bottom: 1.25rem; }
.praise__card figcaption strong { display: block; font: 600 1.1rem/1.3 var(--serif-display); color: var(--espresso); }
.praise__card figcaption span { display: block; font: 600 .72rem/1.5 var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--terracotta); margin-top: .3rem; }
@media (max-width: 760px) { .praise__grid { columns: 1; } }

/* Hero: 3D hardcover render (front/back via .is-back on #flip) */
.hero__cover {
  --bw: 320px;                        /* board width */
  --bh: calc(var(--bw) * 1.264);      /* board height (cover ratio) */
  --bt: calc(var(--bw) * .11);        /* book thickness */
  --board: 3px;                       /* case-board thickness */
  --cloth: #c9ad84;                   /* case edge colour */
  padding: 1rem 0 0;
}
.book3d { position: relative; width: var(--bw); height: var(--bh); margin: 0 auto; perspective: 1800px; perspective-origin: 50% 35%; }
.book3d__body {
  position: absolute; inset: 0; transform-style: preserve-3d; cursor: pointer;
  transform: rotateX(-5deg) rotateY(30deg);
  transition: transform 1s cubic-bezier(.2,.7,.2,1);
}
.book3d:hover .book3d__body { transform: rotateX(-4deg) rotateY(22deg) translateY(-6px); }
.book3d__body.is-back { transform: rotateX(-5deg) rotateY(150deg); }
.book3d:hover .book3d__body.is-back { transform: rotateX(-4deg) rotateY(158deg) translateY(-6px); }

.book3d__face {
  position: absolute; inset: 0; overflow: hidden; background: var(--sand);
  backface-visibility: hidden; -webkit-backface-visibility: hidden;
}
.book3d__face img { display: block; width: 100%; height: 100%; object-fit: cover; }
.book3d__face::after { content: ""; position: absolute; inset: 0; pointer-events: none; }
.book3d__front { transform: translateZ(calc(var(--bt) / 2)); border-radius: 1px 3px 3px 1px; }
.book3d__back  { transform: rotateY(180deg) translateZ(calc(var(--bt) / 2)); border-radius: 3px 1px 1px 3px; }
/* hinge groove + gloss laminate */
.book3d__front::after {
  background:
    linear-gradient(to right, rgba(42,31,26,.35) 0, rgba(42,31,26,.08) 1.4%, rgba(255,255,255,.28) 2.6%, rgba(42,31,26,.22) 4%, rgba(255,255,255,.14) 5.4%, transparent 7.5%),
    linear-gradient(118deg, rgba(255,255,255,.26) 0%, rgba(255,255,255,0) 32%, rgba(255,255,255,0) 68%, rgba(42,31,26,.14) 100%);
}
.book3d__back::after {
  background:
    linear-gradient(to left, rgba(42,31,26,.35) 0, rgba(42,31,26,.08) 1.4%, rgba(255,255,255,.28) 2.6%, rgba(42,31,26,.22) 4%, rgba(255,255,255,.14) 5.4%, transparent 7.5%),
    linear-gradient(62deg, rgba(42,31,26,.12) 0%, rgba(255,255,255,0) 35%, rgba(255,255,255,0) 70%, rgba(255,255,255,.2) 100%);
}

/* Spine */
.book3d__spine {
  position: absolute; top: 0; left: 50%; width: var(--bt); height: 100%; margin-left: calc(var(--bt) / -2);
  transform: rotateY(-90deg) translateZ(calc(var(--bw) / 2));
  backface-visibility: hidden; -webkit-backface-visibility: hidden;
  display: flex; flex-direction: column; align-items: center; justify-content: space-between;
  padding: calc(var(--bw) * .06) 0; border-radius: 2px;
  background: linear-gradient(to right, #b99d76 0%, #e6d4b6 22%, #f3e8d4 48%, #e9d9bd 74%, #b49872 100%);
  color: var(--espresso);
}
.book3d__spine::before, .book3d__spine::after {
  content: ""; position: absolute; left: 0; right: 0; height: 1px; background: var(--gold); opacity: .8;
}
.book3d__spine::before { top: calc(var(--bw) * .035); }
.book3d__spine::after  { bottom: calc(var(--bw) * .035); }
.book3d__spine-mark { font-size: calc(var(--bw) * .022); color: var(--gold); line-height: 1; }
.book3d__spine-title, .book3d__spine-authors { writing-mode: vertical-rl; white-space: nowrap; text-transform: uppercase; line-height: 1; }
.book3d__spine-title { font: 700 calc(var(--bw) * .04)/1 var(--serif-display); letter-spacing: .1em; }
.book3d__spine-title em { font-style: normal; color: #9a6a2c; }
.book3d__spine-authors { font: 600 calc(var(--bw) * .021)/1 var(--sans); letter-spacing: .16em; color: var(--muted); }

/* Page block edges (pages inset between the boards) */
.book3d__edge { position: absolute; background: var(--cloth); backface-visibility: hidden; -webkit-backface-visibility: hidden; }
.book3d__edge::before { content: ""; position: absolute; }
.book3d__edge--fore {
  top: 0; left: 50%; width: var(--bt); height: 100%; margin-left: calc(var(--bt) / -2);
  transform: rotateY(90deg) translateZ(calc(var(--bw) / 2));
}
.book3d__edge--fore::before {
  inset: 4px var(--board);
  background: repeating-linear-gradient(to right, #fbf6ec 0 1px, #e6dccb 1px 2px);
  box-shadow: inset 0 0 6px rgba(42,31,26,.25);
}
.book3d__edge--top, .book3d__edge--bottom {
  left: 0; top: 50%; width: 100%; height: var(--bt); margin-top: calc(var(--bt) / -2);
}
.book3d__edge--top    { transform: rotateX(90deg)  translateZ(calc(var(--bh) / 2)); }
.book3d__edge--bottom { transform: rotateX(-90deg) translateZ(calc(var(--bh) / 2)); }
.book3d__edge--top::before, .book3d__edge--bottom::before {
  inset: var(--board) 4px var(--board) 2px;
  background: repeating-linear-gradient(to bottom, #fbf6ec 0 1px, #e6dccb 1px 2px);
  box-shadow: inset 0 0 6px rgba(42,31,26,.2);
}

/* Floor shadow */
.book3d__shadow {
  position: absolute; left: 4%; right: -6%; bottom: -28px; height: 46px; z-index: -1;
  background: radial-gradient(ellipse at 45% 40%, rgba(42,31,26,.42) 0%, rgba(42,31,26,.14) 45%, transparent 72%);
  filter: blur(4px); pointer-events: none;
}
.flip-toggle { margin-top: 2.6rem; }

@media (max-width: 900px) { .hero__cover { --bw: 220px; padding-top: 2.5rem; } }
@media (prefers-reduced-motion: reduce) { .book3d__body { transition: none; } }