:root {
  --bg: #04061a;
  --bg-2: #070b26;
  --ink: #f4f6ff;
  --ink-soft: #c3c9ea;
  --muted: #8e96c4;
  --blue: #3d7bff;
  --blue-bright: #6ea8ff;
  --glow: rgba(70, 130, 255, .55);
  --gold: #ffb25a;
  --line: rgba(120, 150, 255, .22);
  --serif-display: Cambria, Caladea, Georgia, serif;
  --serif: Cambria, Caladea, Georgia, "Times New Roman", serif;
  --gutter: clamp(16px, 4vw, 48px);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, .brand, .eyebrow, .btn, .nav-links a { font-family: var(--serif-display); }

/* ---------- nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  display: flex; align-items: center; gap: 28px;
  padding: 18px var(--gutter);
  transition: background .3s, backdrop-filter .3s, padding .3s;
}
.nav.scrolled { background: rgba(4, 6, 26, .72); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); padding-block: 12px; box-shadow: 0 1px 0 var(--line); }
.brand { font-size: 20px; letter-spacing: .14em; text-transform: uppercase; text-decoration: none; white-space: nowrap; }
.nav-links { display: flex; gap: clamp(14px, 2vw, 30px); margin-left: auto; }
.nav-links a { font-size: 13px; letter-spacing: .08em; text-transform: uppercase; text-decoration: none; color: var(--ink-soft); padding: 6px 0; position: relative; transition: color .2s; }
.nav-links a:hover, .nav-links a.active { color: var(--ink); }
.nav-links a.active::after { content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px; background: var(--blue-bright); box-shadow: 0 0 10px var(--blue-bright); border-radius: 2px; }
.nav-toggle { display: none; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 14px; letter-spacing: .1em; text-transform: uppercase; text-decoration: none;
  border-radius: 12px; padding: 13px 22px; cursor: pointer; white-space: nowrap;
  transition: transform .2s, box-shadow .25s, background .25s, border-color .25s;
}
.btn-ghost { border: 1.5px solid rgba(110, 168, 255, .75); background: rgba(10, 20, 70, .4); box-shadow: 0 0 18px rgba(70, 130, 255, .35), inset 0 0 12px rgba(70, 130, 255, .2); }
.btn-ghost:hover { box-shadow: 0 0 28px rgba(70, 130, 255, .6), inset 0 0 14px rgba(70, 130, 255, .3); transform: translateY(-1px); }
.btn-primary {
  border: 1.5px solid rgba(140, 185, 255, .85); color: #fff;
  background: linear-gradient(180deg, rgba(40, 85, 220, .9), rgba(14, 36, 140, .9));
  box-shadow: 0 0 26px var(--glow), inset 0 1px 0 rgba(255, 255, 255, .25);
  padding: 16px 28px; font-size: 15px;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 40px rgba(90, 150, 255, .8), inset 0 1px 0 rgba(255, 255, 255, .3); }
.btn .arrow { font-family: var(--serif); font-size: 20px; line-height: 1; transition: transform .2s; }
.btn:hover .arrow { transform: translateX(4px); }
.amz { width: 22px; height: 22px; }
.amz-badge { display: inline-grid; place-items: center; width: 34px; height: 34px; margin: -6px 4px -6px -8px; padding-right: 10px; border-right: 1px solid rgba(255, 255, 255, .3); }
.amz-badge svg { width: 30px; height: 30px; }

/* ---------- hero ---------- */
.hero { position: relative; min-height: 100vh; padding: 120px var(--gutter) 0; overflow: hidden; isolation: isolate; }
#sky, #earth, #lights { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -3; pointer-events: none; }
#earth, #lights { z-index: -2; }
.sunrise {
  position: absolute; z-index: -1; pointer-events: none;
  left: 38%; top: 52%; width: 70vmax; height: 26vmax; transform: translate(-50%, -50%);
  background: radial-gradient(closest-side, rgba(255, 210, 140, .9), rgba(255, 150, 60, .35) 18%, rgba(80, 140, 255, .18) 45%, transparent 75%);
  mix-blend-mode: screen; animation: breathe 7s ease-in-out infinite;
}
.sunrise::after { content: ""; position: absolute; left: 50%; top: 50%; width: 120%; height: 3px; transform: translate(-50%, -50%) rotate(-12deg); background: linear-gradient(90deg, transparent, rgba(255, 220, 170, .9), transparent); filter: blur(1px); }
@keyframes breathe { 50% { opacity: .78; transform: translate(-50%, -50%) scale(1.04); } }

.hero-inner { max-width: 1280px; margin: 0 auto; display: grid; grid-template-columns: 1.25fr .75fr; align-items: center; gap: 40px; min-height: calc(100vh - 360px); }
.hero-copy { padding-top: 4vh; }
h1 { margin: 0; line-height: .98; font-weight: 600; text-transform: uppercase; color: #fff; text-shadow: 0 0 30px rgba(130, 170, 255, .45), 0 2px 0 rgba(0, 0, 0, .4); }
.h1-top { display: block; white-space: nowrap; font-size: clamp(60px, 8.6vw, 128px); letter-spacing: .01em; line-height: .95; }
.h1-bottom { display: block; margin-top: .25em; font-size: clamp(26px, 3.7vw, 54px); letter-spacing: .08em; }
.kicker { margin: 26px 0 0; font-family: var(--serif-display); font-size: clamp(14px, 1.4vw, 19px); letter-spacing: .28em; text-transform: uppercase; color: var(--ink-soft); }
.byline { margin: 4px 0 40px; font-family: var(--serif-display); font-size: clamp(22px, 2.4vw, 32px); letter-spacing: .2em; text-transform: uppercase; }

/* 3D book */
.book-stage { perspective: 1800px; display: grid; justify-items: center; padding: 20px 0 40px; }
.book {
  --w: clamp(240px, 26vw, 380px);
  --t: calc(var(--w) * .13); /* thickness of the page block */
  position: relative; width: var(--w); aspect-ratio: 600 / 1002;
  transform-style: preserve-3d; transform: rotateY(-32deg) rotateX(6deg);
  transition: transform .6s cubic-bezier(.2, .7, .2, 1);
  animation: float 8s ease-in-out infinite;
}
.book > * { position: absolute; backface-visibility: hidden; }
.book-front { inset: 0; transform: translateZ(calc(var(--t) / 2)); border-radius: 2px 5px 5px 2px; overflow: hidden; box-shadow: 0 0 60px rgba(70, 120, 255, .35); }
.book-front img { width: 100%; height: 100%; object-fit: cover; }
.book-front::after { content: ""; position: absolute; inset: 0; background: linear-gradient(105deg, rgba(255, 255, 255, 0) 40%, rgba(255, 255, 255, .14) 50%, rgba(255, 255, 255, 0) 60%), linear-gradient(90deg, rgba(0, 0, 0, .55), rgba(255, 255, 255, .08) 2.5%, transparent 6%); pointer-events: none; }
.book-back { inset: 0; transform: rotateY(180deg) translateZ(calc(var(--t) / 2)); background: #0a0d24; border-radius: 5px 2px 2px 5px; }
/* fore-edge: the visible block of pages, slightly inset from the boards */
.book-pages {
  top: 1.2%; height: 97.6%; width: var(--t); left: calc(100% - var(--t) / 2 - 3px);
  transform: rotateY(90deg);
  background:
    linear-gradient(90deg, rgba(0, 0, 0, .35), transparent 18%, transparent 82%, rgba(0, 0, 0, .3)),
    linear-gradient(180deg, rgba(255, 255, 255, .25), transparent 12%, transparent 88%, rgba(0, 0, 0, .25)),
    repeating-linear-gradient(90deg, #f3efe4 0 1px, #d9d3c3 1px 2px, #ebe6d8 2px 3px);
}
.book-pages-bottom {
  left: 1%; width: calc(100% - 3px - 1%); height: var(--t); top: calc(98.8% - var(--t) / 2);
  transform: rotateX(-90deg);
  background:
    linear-gradient(180deg, rgba(0, 0, 0, .3), transparent 20%, transparent 80%, rgba(0, 0, 0, .35)),
    repeating-linear-gradient(180deg, #e9e4d6 0 1px, #cfc8b6 1px 2px);
}
@keyframes float { 50% { transform: rotateY(-28deg) rotateX(4deg) translateY(-10px); } }
.book-floor { width: calc(clamp(240px, 26vw, 380px) * 1.2); height: 24px; margin-top: -10px; background: radial-gradient(closest-side, rgba(90, 150, 255, .5), transparent); filter: blur(6px); }
@keyframes float { 50% { transform: rotateY(-20deg) rotateX(2deg) translateY(-10px); } }

/* pillars */
.pillars { position: relative; max-width: 1200px; margin: 40px auto 0; padding: 40px 0 70px; display: grid; grid-template-columns: repeat(3, 1fr); }
.pillar { text-align: center; padding: 0 28px; position: relative; }
.pillar + .pillar::before { content: ""; position: absolute; left: 0; top: 10%; bottom: 10%; width: 1px; background: linear-gradient(180deg, transparent, rgba(110, 168, 255, .8), transparent); box-shadow: 0 0 8px var(--blue); }
.pillar-icon { width: 118px; height: 118px; margin: 0 auto 22px; border-radius: 50%; display: grid; place-items: center; background: radial-gradient(circle at 50% 40%, rgba(40, 80, 200, .45), rgba(5, 10, 40, .8) 70%); border: 1.5px solid rgba(110, 168, 255, .55); box-shadow: 0 0 30px rgba(70, 130, 255, .45), inset 0 0 22px rgba(70, 130, 255, .35); }
.pillar-icon svg { width: 62px; height: 62px; fill: none; stroke: #cfe0ff; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; filter: drop-shadow(0 0 6px rgba(110, 168, 255, .9)); }
.pillar h3 { margin: 0 0 8px; font-size: 26px; font-weight: 500; letter-spacing: .16em; text-transform: uppercase; }
.pillar p { margin: 0 auto; max-width: 300px; color: var(--ink-soft); font-size: 19px; line-height: 1.45; }

/* ---------- sections ---------- */
.section { position: relative; padding: clamp(80px, 11vw, 140px) var(--gutter); }
.section::before { content: ""; position: absolute; left: 50%; top: 0; width: min(900px, 80%); height: 1px; transform: translateX(-50%); background: linear-gradient(90deg, transparent, var(--line), transparent); }
.wrap { max-width: 1180px; margin: 0 auto; }
.two-col { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(36px, 6vw, 90px); align-items: center; }
.eyebrow { margin: 0 0 14px; font-size: 13px; letter-spacing: .32em; text-transform: uppercase; color: var(--blue-bright); text-shadow: 0 0 12px rgba(110, 168, 255, .6); }
h2 { margin: 0 0 26px; font-size: clamp(32px, 4vw, 52px); font-weight: 500; line-height: 1.12; letter-spacing: .02em; }
.lead { font-size: 23px; color: var(--ink); }
p { color: var(--ink-soft); }
.section-sub { max-width: 640px; margin-top: -8px; }

.facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 28px; margin: 36px 0 0; padding: 26px 0 0; border-top: 1px solid var(--line); }
.facts dt { font-family: var(--serif-display); font-size: 12px; letter-spacing: .22em; text-transform: uppercase; color: var(--muted); }
.facts dd { margin: 2px 0 0; font-size: 20px; }

.quote-card { margin: 0; padding: clamp(28px, 4vw, 48px); border-radius: 22px; position: relative; overflow: hidden;
  background: radial-gradient(120% 90% at 100% 0%, rgba(120, 80, 255, .28), transparent 60%), radial-gradient(90% 80% at 0% 100%, rgba(40, 110, 255, .25), transparent 60%), rgba(12, 18, 60, .55);
  border: 1px solid rgba(130, 170, 255, .3); box-shadow: 0 30px 80px rgba(0, 0, 0, .45), inset 0 1px 0 rgba(255, 255, 255, .08); }
.quote-card blockquote { margin: 0; font-size: clamp(24px, 2.4vw, 31px); font-style: italic; line-height: 1.4; color: #fff; }
.quote-card figcaption { margin-top: 20px; font-family: var(--serif-display); font-size: 13px; letter-spacing: .22em; text-transform: uppercase; color: var(--muted); }

/* scenes */
.scenes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; margin-top: 44px; }
.scene h3 { margin: 18px 0 6px; font-size: 20px; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; }
.scene p { margin: 0; font-size: 18px; }
.scene-frame { position: relative; aspect-ratio: 16 / 9; border-radius: 16px; overflow: hidden; border: 1px solid rgba(130, 170, 255, .28); display: grid; place-items: center; }
.play { width: 64px; height: 64px; border-radius: 50%; border: 1.5px solid rgba(160, 195, 255, .8); background: rgba(10, 20, 70, .5); box-shadow: 0 0 24px var(--glow); position: relative; transition: transform .25s; }
.play::after { content: ""; position: absolute; left: 26px; top: 20px; border-left: 18px solid #fff; border-top: 12px solid transparent; border-bottom: 12px solid transparent; }
.scene:hover .play { transform: scale(1.08); }

/* have your say */
.say-form { display: grid; gap: 16px; padding: clamp(24px, 3.5vw, 40px); border-radius: 22px; background: rgba(12, 18, 60, .55); border: 1px solid rgba(130, 170, 255, .3); box-shadow: 0 30px 80px rgba(0, 0, 0, .4); }
.say-form label { display: grid; gap: 6px; font-family: var(--serif-display); font-size: 12px; letter-spacing: .18em; text-transform: uppercase; color: var(--ink-soft); }
.say-form .opt { text-transform: none; letter-spacing: 0; font-family: var(--serif); font-size: 15px; color: var(--muted); }
.say-form input, .say-form textarea { font: inherit; font-family: var(--serif); font-size: 19px; letter-spacing: 0; text-transform: none; color: var(--ink); background: rgba(4, 6, 26, .6); border: 1px solid rgba(130, 170, 255, .3); border-radius: 10px; padding: 12px 14px; resize: vertical; transition: border-color .2s, box-shadow .2s; }
.say-form input:focus, .say-form textarea:focus { outline: none; border-color: var(--blue-bright); box-shadow: 0 0 0 3px rgba(70, 130, 255, .25); }
.say-form .btn { justify-self: start; }
.say-form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form-status { margin: 0; min-height: 1.5em; font-size: 18px; }
.form-status.ok { color: #9fe3b4; }
.form-status.err { color: #ffb0a0; }

/* author */
.author { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(36px, 6vw, 90px); align-items: center; }
.author-photo { position: relative; border-radius: 24px; overflow: hidden; border: 1px solid rgba(130, 170, 255, .3); box-shadow: 0 0 60px rgba(70, 120, 255, .25), 0 40px 80px rgba(0, 0, 0, .5); }
.author-photo img { width: 100%; aspect-ratio: 1; object-fit: cover; filter: saturate(.85) contrast(1.05); }
.author-photo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(4, 6, 26, .55)), linear-gradient(135deg, rgba(60, 110, 255, .18), transparent 50%); }
.signature { font-style: italic; font-size: 24px; color: #fff; margin-top: 28px; }

/* contact */
.contact { text-align: center; }
.contact .section-sub { margin-inline: auto; }
.contact-row { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; margin-top: 30px; }
.contact .btn-ghost { text-transform: none; letter-spacing: .04em; font-size: 16px; }

/* footer */
.footer { position: relative; margin-top: 20px; }
.mountains { display: block; width: 100%; height: clamp(120px, 16vw, 220px); }
.footer-inner { text-align: center; padding: 10px var(--gutter) 40px; }
.footer-inner .brand { margin: 0 0 6px; font-size: 16px; color: var(--ink); }
.footer-inner p { margin: 0; font-size: 16px; color: var(--muted); }

/* reveal */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .9s ease, transform .9s cubic-bezier(.2, .7, .2, 1); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .nav-links { position: fixed; inset: 0 0 auto 0; top: 0; padding: 86px var(--gutter) 28px; flex-direction: column; gap: 6px; background: rgba(4, 6, 26, .96); backdrop-filter: blur(16px); transform: translateY(-105%); transition: transform .35s ease; z-index: -1; }
  .nav-links a { font-size: 16px; padding: 10px 0; }
  .nav.open .nav-links { transform: none; }
  .nav-toggle { display: grid; gap: 6px; margin-left: auto; background: none; border: 0; padding: 10px; cursor: pointer; }
  .nav-toggle span { display: block; width: 26px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .3s; }
  .nav.open .nav-toggle span:first-child { transform: translateY(4px) rotate(45deg); }
  .nav.open .nav-toggle span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .nav-buy { order: 2; padding: 10px 14px; font-size: 12px; }
  .nav-toggle { order: 3; margin-left: 0; }
  .brand { margin-right: auto; }
}
@media (max-width: 860px) {
  body { font-size: 18px; }
  .hero { padding-top: 100px; }
  .hero-inner { grid-template-columns: 1fr; text-align: center; gap: 10px; min-height: 0; }
  .hero-copy { padding-top: 2vh; }
  .book { --w: min(62vw, 300px); }
  .h1-top { font-size: clamp(54px, 15vw, 110px); }
  .book-floor { width: min(74vw, 360px); }
  .pillars { grid-template-columns: 1fr; gap: 44px; padding-top: 20px; }
  .pillar + .pillar::before { left: 20%; right: 20%; top: -22px; bottom: auto; width: auto; height: 1px; background: linear-gradient(90deg, transparent, rgba(110, 168, 255, .8), transparent); }
  .two-col, .author { grid-template-columns: 1fr; }
  .author-photo { max-width: 420px; }
  .scenes { grid-template-columns: 1fr; }
  .facts { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .nav-buy { display: none; }
  .btn-primary { padding: 14px 18px; font-size: 13px; letter-spacing: .06em; }
  .kicker { letter-spacing: .18em; }
  .byline { letter-spacing: .12em; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ambient space behind the content sections */
main { position: relative; isolation: isolate; }
main::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(40% 30% at 85% 12%, rgba(110, 60, 220, .16), transparent 70%),
    radial-gradient(35% 25% at 10% 38%, rgba(40, 90, 255, .14), transparent 70%),
    radial-gradient(40% 25% at 90% 62%, rgba(120, 70, 230, .12), transparent 70%),
    radial-gradient(45% 25% at 15% 88%, rgba(40, 90, 255, .12), transparent 70%);
}
main::after {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none; opacity: .55;
  background-image:
    radial-gradient(1px 1px at 12% 18%, #fff, transparent), radial-gradient(1px 1px at 64% 7%, #cfe0ff, transparent),
    radial-gradient(1.5px 1.5px at 82% 31%, #fff, transparent), radial-gradient(1px 1px at 33% 44%, #fff, transparent),
    radial-gradient(1px 1px at 91% 72%, #cfe0ff, transparent), radial-gradient(1px 1px at 7% 63%, #fff, transparent),
    radial-gradient(1.5px 1.5px at 48% 86%, #fff, transparent), radial-gradient(1px 1px at 72% 52%, #fff, transparent);
  background-size: 520px 520px;
}

/* author story: the photo stays in view while the text scrolls */
.author { align-items: start; }
.author-photo { position: sticky; top: 110px; }
.author-turn { font-size: 23px; color: #fff; margin: 28px 0; }

/* ---------- look inside ---------- */
.hero-copy .btn { vertical-align: middle; }
.look-btn { gap: 10px; margin-left: 14px; padding: 15px 22px; font-size: 14px; color: var(--ink); font-family: var(--serif-display); }
.look-btn svg { width: 20px; height: 20px; }
.book-section .look-btn { margin: 10px 0 0; }
.book-stage { position: relative; }
.book-open { position: absolute; inset: 0; z-index: 2; background: none; border: 0; cursor: pointer; display: grid; place-items: end center; padding-bottom: 8%; }
.book-open span { font-family: var(--serif-display); font-size: 12px; letter-spacing: .2em; text-transform: uppercase; color: var(--ink); padding: 8px 14px; border-radius: 999px; background: rgba(4, 6, 26, .72); border: 1px solid rgba(130, 170, 255, .45); opacity: 0; transform: translateY(6px); transition: opacity .25s, transform .25s; }
.book-open:hover span, .book-open:focus-visible span { opacity: 1; transform: none; }
body.reading { overflow: hidden; }

.reader { position: fixed; inset: 0; z-index: 100; display: grid; grid-template-rows: 1fr auto; place-items: center; padding: 60px 16px 20px; opacity: 0; transition: opacity .3s; }
.reader[hidden] { display: none; }
.reader.open { opacity: 1; }
.reader-backdrop { position: absolute; inset: 0; background: radial-gradient(70% 60% at 50% 45%, rgba(30, 50, 140, .55), rgba(2, 3, 14, .96)); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.reader-close { position: absolute; top: 14px; right: 16px; z-index: 2; width: 44px; height: 44px; border-radius: 50%; font-size: 28px; line-height: 1; color: var(--ink); background: rgba(10, 20, 70, .6); border: 1px solid var(--line); cursor: pointer; }
.reader-stage { position: relative; perspective: 2600px; display: grid; place-items: center; width: 100%; }
.reader-bar { position: relative; display: flex; align-items: center; gap: 18px; margin-top: 16px; }
.reader-count { min-width: 180px; text-align: center; font-family: var(--serif-display); font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft); }
.reader-nav { width: 46px; height: 46px; border-radius: 50%; font-size: 22px; color: var(--ink); cursor: pointer; background: rgba(20, 40, 130, .6); border: 1px solid rgba(130, 170, 255, .5); box-shadow: 0 0 18px rgba(70, 130, 255, .35); transition: opacity .2s, transform .2s; }
.reader-nav:hover:not(:disabled) { transform: scale(1.06); }
.reader-nav:disabled { opacity: .3; cursor: default; }

.flip { position: relative; width: calc(var(--pw) * 2); height: var(--ph); transform-style: preserve-3d; transition: transform .9s cubic-bezier(.645, .045, .355, 1); --fs: calc(var(--pw) * .043); }
.flip.single { width: var(--pw); }
.leaf { position: absolute; top: 0; left: var(--pw); width: var(--pw); height: var(--ph); transform-style: preserve-3d; transform-origin: left center; transition: transform .9s cubic-bezier(.645, .045, .355, 1); cursor: pointer; }
.flip.single .leaf { left: 0; transition: transform .9s cubic-bezier(.645, .045, .355, 1), opacity .4s .5s; }
.leaf.turned { transform: rotateY(-180deg); }
.flip.single .leaf.turned { opacity: 0; pointer-events: none; }
.leaf > .face { position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden; overflow: hidden; }
.face.back { transform: rotateY(180deg); }
.leaf.moving .face::after { content: ""; position: absolute; inset: 0; pointer-events: none; animation: page-shade .9s ease-in-out; }
@keyframes page-shade { 0%, 100% { background: transparent; } 50% { background: linear-gradient(90deg, rgba(0, 0, 0, .25), rgba(255, 255, 255, .08) 60%, rgba(0, 0, 0, .15)); } }

/* paper */
.pg { width: var(--pw); height: var(--ph); color: #221d17; font-family: var(--serif); font-size: var(--fs); line-height: 1.42; background: #f5f1e6; }
.leaf .face.pg { box-shadow: 0 20px 50px rgba(0, 0, 0, .45); }
.face.front.pg { border-radius: 0 4px 4px 0; background: linear-gradient(90deg, rgba(0, 0, 0, .16), rgba(0, 0, 0, .03) 7%, transparent 14%), #f5f1e6; }
.face.back.pg { border-radius: 4px 0 0 4px; background: linear-gradient(270deg, rgba(0, 0, 0, .16), rgba(0, 0, 0, .03) 7%, transparent 14%), #f2eee2; }
.pg-cover { background: #0a0d24; border-radius: 2px 5px 5px 2px; }
.pg-cover img { width: 100%; height: 100%; object-fit: cover; pointer-events: none; }
.face.pg-blank.endpaper { background: radial-gradient(120% 80% at 30% 20%, #1b2a6e, #0a0f2e 70%); }
.pg-end { background: radial-gradient(90% 70% at 50% 30%, #1d2c75, #070b26 75%) !important; color: var(--ink); }
.pg-end h3 { margin: .3em 0 .6em; font-family: var(--serif-display); font-weight: 500; font-size: 1.6em; }
.pg-end p { color: var(--ink-soft); margin: 0 0 1.4em; }
.pe-kicker { font-family: var(--serif-display); font-size: .7em; letter-spacing: .25em; text-transform: uppercase; color: var(--blue-bright) !important; }
.pg-end .btn { font-size: .8em; padding: .9em 1.4em; }

@media (max-width: 860px) {
  .author-photo { position: static; }
}
@media (max-width: 560px) {
  .look-btn { margin: 12px 0 0; }
}

/* author story folds after two paragraphs */
.author-more { display: grid; grid-template-rows: 0fr; position: relative; transition: grid-template-rows .7s cubic-bezier(.2, .7, .2, 1); }
.author-more-inner { overflow: hidden; min-height: 0; }
.author .see-more { margin-top: 18px; gap: 10px; font-size: 13px; }
.author .see-more .arrow { transition: transform .3s; }
.author.expanded .author-more { grid-template-rows: 1fr; }
.author.expanded .see-more .arrow { transform: rotate(180deg); }
.author-fade { position: relative; }
.author:not(.expanded) .author-fade::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3.2em; background: linear-gradient(180deg, transparent, var(--bg)); pointer-events: none; }

.pg-end { display: grid; place-items: center; text-align: center; padding: 12%; }

/* PDF pages are white; multiply them onto the paper tone */
.pg-img img { width: 100%; height: 100%; object-fit: cover; mix-blend-mode: multiply; pointer-events: none; user-select: none; }

/* animated scenes */
.scene-frame { width: 100%; padding: 0; cursor: pointer; background: #050816; color: inherit; font: inherit; }
.scene-frame canvas { position: absolute; inset: 0; width: 100%; height: 100%; transition: transform .6s cubic-bezier(.2, .7, .2, 1), filter .4s; filter: saturate(.9) brightness(.85); }
.scene-frame:hover canvas, .scene-frame:focus-visible canvas { transform: scale(1.04); filter: none; }
.scene-frame .play { position: relative; z-index: 1; }
.scene-chapter { margin: 16px 0 0 !important; font-size: 12px !important; letter-spacing: .18em; text-transform: uppercase; color: var(--blue-bright) !important; }
.scene h3 { margin-top: 6px; }

.cinema { position: fixed; inset: 0; z-index: 110; display: grid; place-items: center; padding: 60px 16px 24px; opacity: 0; transition: opacity .3s; }
.cinema[hidden] { display: none; }
.cinema.open { opacity: 1; }
.cinema-backdrop { position: absolute; inset: 0; background: rgba(1, 2, 10, .94); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.cinema-box { position: relative; width: min(1100px, 100%, calc((100vh - 200px) * 16 / 9)); }
.cinema-title { margin: 0 0 12px; font-family: var(--serif-display); font-size: 14px; letter-spacing: .24em; text-transform: uppercase; color: var(--ink-soft); }
.cinema-screen { position: relative; aspect-ratio: 16 / 9; border-radius: 14px; overflow: hidden; border: 1px solid rgba(130, 170, 255, .3); box-shadow: 0 30px 90px rgba(0, 0, 0, .6), 0 0 60px rgba(70, 120, 255, .2); background: #000; }
.cinema-screen canvas { position: absolute; inset: 0; width: 100%; height: 100%; cursor: pointer; }
.cinema-sub { position: absolute; left: 6%; right: 6%; bottom: 6%; margin: 0; text-align: center; font-size: clamp(15px, 2vw, 22px); line-height: 1.4; color: #fff; text-shadow: 0 2px 10px rgba(0, 0, 0, .9), 0 0 2px #000; opacity: 0; transform: translateY(6px); transition: opacity .6s, transform .6s; pointer-events: none; }
.cinema-sub.show { opacity: 1; transform: none; }
.cinema-controls { display: flex; align-items: center; gap: 16px; margin-top: 14px; }
.cinema-controls .btn { padding: 10px 16px; font-size: 12px; min-width: 112px; justify-content: center; }
.cinema-progress { flex: 1; height: 3px; border-radius: 3px; background: rgba(130, 170, 255, .2); overflow: hidden; }
.cinema-progress span { display: block; height: 100%; width: 0; background: var(--blue-bright); box-shadow: 0 0 8px var(--blue-bright); }

@media (max-width: 600px) {
  .cinema-sub { font-size: 13px; bottom: 4%; left: 4%; right: 4%; }
}

/* ---------- e-book ---------- */
.ebook-btn { gap: 10px; margin-left: 14px; padding: 15px 22px; font-size: 14px; color: var(--ink); }
.ebook-btn svg { width: 20px; height: 20px; }
.formats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 30px 0 22px; }
.format { padding: 20px; border-radius: 16px; background: rgba(12, 18, 60, .5); border: 1px solid rgba(130, 170, 255, .25); display: grid; gap: 8px; align-content: start; }
.format .btn { justify-self: start; margin-top: 6px; padding: 12px 18px; font-size: 13px; }
.format-name { margin: 0; font-family: var(--serif-display); font-size: 15px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink); }
.format-note { margin: 0; font-size: 16px; }
.footer-links { margin-top: 6px !important; }
.footer-links a { color: var(--ink-soft); }

.ebook { position: fixed; inset: 0; z-index: 120; display: grid; place-items: center; padding: 16px; overflow-y: auto; opacity: 0; transition: opacity .25s; }
.ebook[hidden] { display: none; }
.ebook.open { opacity: 1; }
.ebook-backdrop { position: fixed; inset: 0; background: rgba(2, 3, 14, .85); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.ebook-card { position: relative; width: min(520px, 100%); display: grid; gap: 14px; padding: clamp(22px, 4vw, 34px); border-radius: 22px; background: radial-gradient(120% 80% at 100% 0%, rgba(110, 70, 230, .22), transparent 60%), #0a1034; border: 1px solid rgba(130, 170, 255, .35); box-shadow: 0 40px 100px rgba(0, 0, 0, .6); }
.ebook-close { position: absolute; top: 12px; right: 12px; }
.ebook-head { display: flex; gap: 16px; align-items: center; padding-right: 40px; }
.ebook-head img { width: 64px; height: auto; border-radius: 3px; box-shadow: 0 8px 20px rgba(0, 0, 0, .5); }
.ebook-head .eyebrow { margin: 0 0 4px; }
.ebook-head h3 { margin: 0; font-size: 22px; font-weight: 600; }
.ebook-price { margin: 4px 0 0; font-size: 20px; color: #fff; }
.ebook-price span { font-size: 14px; color: var(--muted); margin-left: 6px; }
.ebook-card label { display: grid; gap: 6px; font-family: var(--serif-display); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft); }
.ebook-card label .opt { text-transform: none; letter-spacing: 0; font-size: 13px; color: var(--muted); }
.ebook-card input:not([type=checkbox]) { font: inherit; font-family: var(--serif); font-size: 17px; letter-spacing: 0; text-transform: none; color: var(--ink); background: rgba(4, 6, 26, .6); border: 1px solid rgba(130, 170, 255, .3); border-radius: 10px; padding: 11px 13px; }
.ebook-card input:focus { outline: none; border-color: var(--blue-bright); box-shadow: 0 0 0 3px rgba(70, 130, 255, .25); }
.ebook-company { border: 1px solid rgba(130, 170, 255, .2); border-radius: 12px; padding: 10px 14px; }
.ebook-company summary { cursor: pointer; font-size: 15px; color: var(--ink-soft); }
.ebook-company[open] { display: grid; gap: 12px; }
.ebook-card .consent { display: flex; gap: 10px; align-items: flex-start; text-transform: none; letter-spacing: 0; font-family: var(--serif); font-size: 14px; line-height: 1.45; color: var(--ink-soft); }
.ebook-card .consent input { margin-top: 3px; width: 18px; height: 18px; flex: none; accent-color: var(--blue); }
.ebook-card .consent a { color: var(--blue-bright); }
.ebook-card .btn-primary { justify-content: center; }
.ebook-seller { margin: 0; font-size: 13px; color: var(--muted); text-align: center; }
@media (max-width: 860px) { .formats { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .ebook-btn { margin: 12px 0 0; } }