/* ==========================================================================
   LIBER — write your world
   Visual language from Liber's own posters and print files: cream dot-grid
   paper, crimson ink, and Bauhaus — the typeface of the logo and packaging.
   ========================================================================== */

@font-face { font-family: 'Bauhaus'; src: url('../fonts/bauhaus-regular.woff2?v=3') format('woff2'); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: 'Bauhaus'; src: url('../fonts/bauhaus-bold.woff2?v=3') format('woff2'); font-weight: 700; font-style: normal; font-display: swap; }

@property --W { syntax: '<length>'; inherits: true; initial-value: 0px; }
@property --H { syntax: '<length>'; inherits: true; initial-value: 0px; }
@property --T { syntax: '<length>'; inherits: true; initial-value: 0px; }

:root {
  --paper: #f6f1e3;
  --paper-2: #efe7d2;
  --paper-page: #f8f8f5;
  --dot: #d9cfb4;
  --line: #e2d9c1;
  --ink: #1f1c1d;
  --ink-2: #4a4546;
  --muted: #7d7462;
  --crimson: #e61e4f;
  --crimson-d: #b9123c;
  --teal: #517a8b;
  --sun: #fcd520;
  --night: #141213;

  /* Bauhaus throughout, as in the Liber brand; Caveat only fakes handwriting */
  --f-display: 'Bauhaus', 'Futura', 'Century Gothic', sans-serif;
  --f-body: 'Bauhaus', 'Futura', 'Century Gothic', sans-serif;
  --f-mono: 'Bauhaus', 'Futura', 'Century Gothic', sans-serif;
  --f-hand: 'Caveat', 'Segoe Print', cursive;

  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --ease: cubic-bezier(.2, .75, .2, 1);
  --dots: radial-gradient(circle, var(--dot) 1.1px, transparent 1.4px) 0 0 / 22px 22px;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  background-image: radial-gradient(circle, var(--dot) 1px, transparent 1.3px);
  background-size: 22px 22px;
  color: var(--ink);
  font: 400 17px/1.55 var(--f-body);
  overflow-x: hidden;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}
html { overflow-x: hidden; overflow-x: clip; }
img { max-width: 100%; display: block; }
a { color: inherit; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--crimson); outline-offset: 3px; }
[hidden] { display: none !important; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; z-index: 100; background: var(--ink); color: var(--paper); padding: 8px 14px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }

.eyebrow {
  font: 700 12px/1.2 var(--f-mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--crimson);
  margin: 0 0 18px;
}
.eyebrow--light { color: var(--sun); }

.display {
  font: 700 clamp(40px, 5.4vw, 80px)/1.02 var(--f-display);
  letter-spacing: -.01em;
  margin: 0;
}
.accent { color: var(--crimson); }
.nw { white-space: nowrap; }

.section { padding: clamp(80px, 12vw, 150px) 0; position: relative; }
.section__head { margin-bottom: clamp(40px, 6vw, 72px); }
.section__head--row { display: flex; justify-content: space-between; align-items: flex-end; gap: 32px; flex-wrap: wrap; }
.section__lede { max-width: 440px; color: var(--ink-2); font-size: 18px; margin: 20px 0 0; }
.section__head--row .section__lede { margin: 0; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 15px 26px;
  border-radius: 999px;
  border: 1.5px solid transparent;
  font: 700 13px/1 var(--f-mono);
  letter-spacing: .08em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: transform .25s var(--ease), background .25s, color .25s, box-shadow .25s;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn--sm { padding: 11px 18px; font-size: 12px; }
.btn--crimson { background: var(--crimson); color: #fff; box-shadow: 0 10px 24px -10px rgba(230, 30, 79, .7); }
.btn--crimson:hover { background: var(--crimson-d); }
.btn--ink { background: var(--ink); color: var(--paper); }
.btn--ghost { border-color: var(--ink); background: transparent; }
.btn--ghost:hover, .btn--ghost[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.btn svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; }

.icon-btn {
  width: 44px; height: 44px; border-radius: 50%;
  border: 1.5px solid var(--ink); background: transparent;
  display: grid; place-items: center; cursor: pointer;
  transition: background .2s, color .2s;
}
.icon-btn:hover { background: var(--ink); color: var(--paper); }
.icon-btn:disabled { opacity: .3; cursor: default; background: transparent; color: var(--ink); }
.icon-btn svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }

/* ---------- nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  display: flex; align-items: center; gap: 28px;
  padding: 14px var(--gutter);
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, transform .4s var(--ease);
}
.nav.is-scrolled { border-color: var(--line); }
.nav.is-hidden { transform: translateY(-100%); }
.nav__brand svg { width: 104px; height: 16px; display: block; fill: var(--ink); }
.nav__links { display: flex; gap: 26px; margin-left: auto; }
.nav__links a { font: 700 12px/1 var(--f-mono); letter-spacing: .1em; text-transform: uppercase; text-decoration: none; position: relative; }
.nav__links a::after { content: ''; position: absolute; left: 0; right: 0; bottom: -6px; height: 2px; background: var(--crimson); transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease); }
.nav__links a:hover::after { transform: scaleX(1); }
.nav__menu { display: none; }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero { height: 280vh; position: relative; }
.hero__sticky {
  position: sticky; top: 0; height: 100vh; min-height: 620px;
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  align-items: center;
  max-width: 1400px; margin: 0 auto;
  padding: 84px var(--gutter) 72px;
  overflow: hidden;
}
.hero__title {
  font: 700 clamp(56px, min(8.6vw, 14vh), 150px)/.98 var(--f-display);
  letter-spacing: -.02em; margin: 0 0 24px;
}
.hero__title .line { display: block; overflow: hidden; padding-bottom: .02em; }
.hero__title .line > span { display: inline-block; transform: translateY(105%); animation: rise .9s var(--ease) forwards; }
.hero__title .line:nth-child(2) > span { animation-delay: .08s; }
.hero__title .line:nth-child(3) > span { animation-delay: .16s; }
@keyframes rise { to { transform: none; } }
.hero__lede { font-size: 19px; max-width: 420px; color: var(--ink-2); margin: 0 0 30px; }
.hero__cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero__stats { list-style: none; display: flex; gap: 30px; padding: 0; margin: clamp(20px, 4vh, 44px) 0 0; }
.hero__stats li { display: flex; flex-direction: column; }
.hero__stats b { font: 700 36px/1 var(--f-display); }
.hero__stats span { font: 400 11px/1.4 var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }

.hero__stage { position: relative; height: 100%; min-height: 520px; perspective: 2400px; perspective-origin: 40% 30%; }
.hero__book { position: absolute; inset: 0; transform-style: preserve-3d; }
.hero__book--b { transform: translate(-30%, -10%) scale(.9); opacity: .95; }
.hero__book--c { transform: translate(22%, 8%) scale(.84); }
.hero__book--b, .hero__book--c { transition: opacity .4s, transform .6s var(--ease); }
.hero.is-opening .hero__book--b { transform: translate(-60%, -14%) scale(.82); opacity: 0; }
.hero.is-opening .hero__book--c { transform: translate(60%, 12%) scale(.8); opacity: 0; }

.hero__scroll { position: absolute; left: 50%; bottom: 22px; transform: translateX(-50%); font: 400 11px var(--f-mono); letter-spacing: .2em; text-transform: uppercase; color: var(--muted); display: flex; flex-direction: column; align-items: center; gap: 8px; }
.hero__scroll::after { content: ''; width: 1.5px; height: 36px; background: linear-gradient(var(--ink), transparent); animation: drip 1.8s ease-in-out infinite; transform-origin: top; }
@keyframes drip { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); } 100% { transform: scaleY(1); opacity: 0; } }

/* handwriting inside the hero book */
.hand { position: absolute; inset: 0; container-type: size; pointer-events: none; }
.hand__line {
  position: absolute; left: 11%;
  font: 700 calc(100cqh * 10 / 240) / 1 var(--f-hand);
  color: #1d3f9b;
  white-space: nowrap;
  clip-path: inset(-20% calc(100% - var(--p, 0) * 100%) -20% 0);
  transform: translateY(-86%);
}
.hand__line--big { font-size: calc(100cqh * 19 / 240); color: var(--crimson); transform: translateY(-78%) rotate(-2deg); }
.hand__line--sign { font-size: calc(100cqh * 9 / 240); }

/* ---------- marquee ---------- */
.marquee { background: var(--crimson); color: #fff; overflow: hidden; padding: 20px 0; transform: rotate(-1.4deg); margin: 36px -20px 0; position: relative; z-index: 2; }
.marquee__track { display: flex; align-items: center; gap: 36px; width: max-content; animation: marquee 32s linear infinite; }
.marquee span { font: 700 clamp(24px, 3.2vw, 40px)/1 var(--f-display); white-space: nowrap; }
.marquee i { width: 30px; height: 22px; flex: none; background: url('../img/b-mark.svg') center / contain no-repeat; filter: invert(1); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ==========================================================================
   SHELF
   ========================================================================== */
.series { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 40px; align-items: end; margin-bottom: 90px; }
.series:last-child { margin-bottom: 0; }
.series__info h3 { font: 700 30px/1.05 var(--f-display); margin: 0 0 12px; }
.series__info h3 small { display: block; font: 700 12px/1.6 var(--f-mono); letter-spacing: .08em; color: var(--muted); margin-top: 8px; }
.series__info p { margin: 0 0 16px; color: var(--ink-2); font-size: 16px; }
.series__pages { font: 700 12px var(--f-mono) !important; letter-spacing: .08em; text-transform: uppercase; color: var(--ink) !important; }
.tags { list-style: none; padding: 0; margin: 0 0 16px; display: flex; flex-wrap: wrap; gap: 6px; }
.tags li { font: 400 11px/1 var(--f-mono); padding: 6px 9px; border: 1px solid var(--ink); border-radius: 99px; }

.shelf {
  position: relative;
  display: flex; align-items: flex-end; gap: 5px;
  padding: 70px 24px 0;
  perspective: 1600px;
  perspective-origin: 50% 20%;
  min-height: 420px;
}
.shelf::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -16px; height: 16px;
  background: var(--ink); border-radius: 2px;
  box-shadow: 0 18px 30px -12px rgba(31, 28, 29, .5);
}
.shelf--scroll { overflow-x: auto; overflow-y: hidden; scrollbar-width: thin; padding-bottom: 0; margin-bottom: 16px; }
.shelf--scroll::after { position: sticky; display: none; }
.shelf--scroll { border-bottom: 16px solid var(--ink); border-radius: 0 0 2px 2px; margin-bottom: 0; }

.sb {
  --t: 18px;
  position: relative; flex: none;
  width: var(--t); height: var(--h);
  padding: 0; border: 0; background: none; cursor: pointer;
  transition: width .55s var(--ease);
}
.sb__3d {
  position: absolute; bottom: 0; left: 50%;
  width: var(--t); height: var(--h); margin-left: calc(var(--t) / -2);
  transform-style: preserve-3d;
  transform: translateZ(calc(var(--w) / -2));
  transition: transform .6s var(--ease);
}
.sb__face { position: absolute; top: 0; left: 0; height: 100%; backface-visibility: hidden; }
.sb__spine {
  width: var(--t);
  transform: translateZ(calc(var(--w) / 2));
  background: linear-gradient(90deg, rgba(0,0,0,.22), rgba(0,0,0,0) 22%, rgba(255,255,255,.14) 50%, rgba(0,0,0,0) 78%, rgba(0,0,0,.25)), var(--s);
  color: var(--spine-ink);
  border-radius: 3px 3px 1px 1px;
}
.sb__cover { width: var(--w); left: calc((var(--t) - var(--w)) / 2); transform: rotateY(90deg) translateZ(calc(var(--t) / 2)); }
.sb__back { width: var(--w); left: calc((var(--t) - var(--w)) / 2); transform: rotateY(-90deg) translateZ(calc(var(--t) / 2)); background: var(--c); }
.sb__top { width: var(--t); height: var(--w) !important; top: calc(var(--w) / -2); transform: rotateX(90deg); background: repeating-linear-gradient(90deg, #f7f3ea 0 1px, #ddd5c4 1px 2px); }
.sb__shadow { position: absolute; left: 50%; bottom: -6px; width: calc(var(--t) + 16px); height: 12px; transform: translateX(-50%); background: radial-gradient(closest-side, rgba(0,0,0,.35), transparent); transition: width .55s var(--ease); }

.sb:hover, .sb:focus-visible, .sb.is-out { width: calc(var(--w) * .96 + var(--t) * .3 + 14px); }
.sb:hover .sb__3d, .sb:focus-visible .sb__3d, .sb.is-out .sb__3d { transform: translateY(-22px) translateZ(calc(var(--w) / -2)) rotateY(-76deg); }
.sb:hover .sb__shadow, .sb.is-out .sb__shadow { width: calc(var(--w) * .9); }
.sb__tip {
  position: absolute; left: 50%; bottom: calc(100% + 34px); transform: translate(-50%, 6px);
  white-space: nowrap; font: 700 11px/1 var(--f-mono); letter-spacing: .06em; text-transform: uppercase;
  background: var(--ink); color: var(--paper); padding: 7px 10px; border-radius: 6px;
  opacity: 0; pointer-events: none; transition: opacity .25s, transform .25s;
}
.sb:hover .sb__tip, .sb:focus-visible .sb__tip, .sb.is-out .sb__tip { opacity: 1; transform: translate(-50%, 0); }

.seg { display: inline-flex; background: var(--paper-2); border-radius: 999px; padding: 4px; gap: 2px; flex-wrap: wrap; }
.seg button { border: 0; background: transparent; padding: 10px 16px; border-radius: 999px; cursor: pointer; font: 700 12px/1 var(--f-mono); letter-spacing: .04em; transition: background .2s, color .2s; display: inline-flex; align-items: center; gap: 8px; }
.seg button.is-on { background: var(--ink); color: var(--paper); }
.seg--small button { padding: 9px 12px; font-size: 11px; }
.seg__ico { display: inline-block; border: 1.5px solid currentColor; border-radius: 1px; }

/* ==========================================================================
   COVERS
   ========================================================================== */
.cv {
  position: absolute; inset: 0; overflow: hidden;
  container-type: size;
  background: var(--c);
  border-radius: 0 2px 2px 0;
}
/* the rim: binding tape wrapping from the spine onto the front */
.cv__spine { position: absolute; left: 0; top: 0; bottom: 0; width: 7%; background: var(--s); box-shadow: inset -1px 0 0 rgba(0,0,0,.1); }
.cv__logo { position: absolute; right: 8%; top: 6%; width: 30%; aspect-ratio: 646 / 251; overflow: visible; }
.cv__label { position: absolute; left: 7%; right: 0; bottom: 8%; text-align: center; font: 400 2.9cqw/1 var(--f-body); letter-spacing: 1em; text-indent: 1em; color: var(--ink); }
.cv--wild .cv__spine { width: 5.5%; }
.cv--wild .cv__logo { right: 7%; top: 6.5%; width: 33%; }
.cv--wild .cv__label { left: 5.5%; font-size: 3.4cqw; letter-spacing: .85em; text-indent: .85em; color: var(--tag); bottom: 7.5%; }
.cv__art { position: absolute; left: 12%; right: 6%; top: 22%; bottom: 17%; }
.cv__art img { width: 100%; height: 100%; object-fit: contain; filter: drop-shadow(0 1cqw 1.4cqw rgba(0,0,0,.22)); }
.cv__uv {
  position: absolute; inset: 0;
  -webkit-mask-size: contain; mask-size: contain;
  -webkit-mask-position: center; mask-position: center;
  -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat;
  background: linear-gradient(112deg, transparent 38%, rgba(255,255,255,.75) 48%, rgba(255,255,255,.1) 54%, transparent 60%) 0 0 / 300% 100% no-repeat, rgba(255,255,255,.06);
  mix-blend-mode: overlay;
  animation: uv 5s ease-in-out infinite;
}
@keyframes uv { 0%, 20% { background-position: 110% 0, 0 0; } 70%, 100% { background-position: -10% 0, 0 0; } }
.cv__gloss {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(circle at calc(var(--gx, .3) * 100%) calc(var(--gy, .2) * 100%), rgba(255,255,255,.16), rgba(255,255,255,0) 42%),
    linear-gradient(115deg, rgba(255,255,255,.1) 0%, rgba(255,255,255,0) 28%, rgba(255,255,255,0) 62%, rgba(255,255,255,.05) 76%, rgba(255,255,255,0) 90%);
}
/* shelf books stay cheap: the UV sweep only runs on the book you're holding */
.sb .cv__uv { display: none; }
.sb:hover .cv__uv, .sb.is-out .cv__uv { display: block; }

/* back cover — layout from the print files (Back Design Vector / Wild Series Back) */
.cvb { --panel: var(--c); --pb: 1; position: absolute; inset: 0; background: #fafaf8; container-type: size; overflow: hidden; color: #231f20; }
.cvb--wild { --panel: #fff200; --pb: .62; }
.cvb__rim { position: absolute; right: 0; top: 0; bottom: 0; width: 4.4%; background: var(--s); box-shadow: inset 1px 0 0 rgba(0,0,0,.1); }
.cvb__panel { position: absolute; left: 8.2%; width: 79.4%; top: 5.3%; height: 66.7%; background: var(--panel); overflow: hidden; }
.cvb--wild .cvb__panel { left: 6.1%; width: 81.3%; top: 8.8%; height: 63.9%; }
.cvb__panel::after { content: ''; position: absolute; inset: 0; background: url('../img/b-panel.webp') center / cover no-repeat; opacity: var(--pb); }
.cvb__quote { position: absolute; left: 0; right: 4.4%; top: 74.5%; margin: 0; text-align: center; font: 400 3.5cqw/1.3 var(--f-body); }
.cvb__info { position: absolute; left: 7%; right: 10%; bottom: 3.5%; display: grid; grid-template-columns: 1fr 1.25fr .9fr; gap: 3%; align-items: end; }
.cvb__brand { text-align: center; }
.cvb__logo { width: 78%; aspect-ratio: 646 / 251; fill: #231f20; display: block; margin: 0 auto 1.4cqw; }
.cvb__brand p { margin: 0; font: 700 1.35cqw/1.35 var(--f-body); }
.cvb__spec { display: flex; flex-direction: column; font: 400 1.45cqw/1.35 var(--f-body); }
.cvb__spec b { font-size: 2.5cqw; font-weight: 400; margin-bottom: .4cqw; }
.cvb__spec strong { font-weight: 700; }
.cvb__maker { width: 100%; height: auto; }

/* inside covers — cream, "Liber" in India's scripts */
.inside { position: absolute; inset: 0; background: #efe9d1; container-type: size; overflow: hidden; }
.inside span { position: absolute; white-space: nowrap; font: 400 5cqw/1 'Nirmala UI', 'Noto Sans', 'Kohinoor Devanagari', system-ui, sans-serif; color: #938e7b; }

/* ---------- printed text on pages ---------- */
.pg-head { position: absolute; display: grid; grid-template-columns: auto auto; column-gap: .9em; row-gap: .45em; align-items: center; color: #4d4d4d; font-family: var(--f-body); line-height: 1; }
.pg-head__b { grid-row: 1 / span 2; width: 3.2em; height: 2.5em; fill: #4d4d4d; }
.pg-head__f { display: flex; align-items: flex-end; gap: .6em; }
.pg-head__f b { font-weight: 700; letter-spacing: .05em; width: 3.2em; }
.pg-head__f i { display: block; width: 12em; border-bottom: 1px solid #707070; }
.pg-index { position: absolute; inset: 0; color: #474747; font-family: var(--f-body); }
.pg-index__title { position: absolute; font-weight: 700; letter-spacing: .55em; line-height: 1; }
.pg-index__logo { position: absolute; aspect-ratio: 646 / 93; fill: #474747; }
.pg-index__fields { position: absolute; display: flex; flex-direction: column; gap: 1.3em; }
.pg-index__fields p { display: flex; align-items: flex-end; gap: .7em; margin: 0; line-height: 1; }
.pg-index__fields span { font-weight: 700; white-space: nowrap; letter-spacing: .03em; }
.pg-index__fields i { flex: 1; border-bottom: 1px solid #707070; }
.pg-index__heads span { position: absolute; display: flex; align-items: center; justify-content: center; text-align: center; font-weight: 700; line-height: 1.1; }
.pg-play { position: absolute; margin: 0; color: #5a5a5a; font-family: var(--f-body); letter-spacing: .04em; line-height: 1; }

/* ==========================================================================
   BOOK 3D
   ========================================================================== */
.bk {
  --open: 0;
  --paper-edge: repeating-linear-gradient(90deg, #faf7ef 0 1px, #ddd6c5 1px 2px);
  position: absolute; left: 50%; top: 50%;
  width: var(--W); height: var(--H);
  margin-left: calc(var(--W) / -2); margin-top: calc(var(--H) / -2);
  transform-style: preserve-3d;
  transition: --W .7s var(--ease), --H .7s var(--ease), --T .7s var(--ease);
  -webkit-user-select: none; user-select: none;
  touch-action: pan-y;
}
.bk__pose {
  position: absolute; inset: 0;
  transform-style: preserve-3d;
  transform-origin: calc(50% - var(--open) * 50%) 50%;
  transform: translateX(calc(var(--open) * var(--W) / 2)) rotateX(var(--rx, 12deg)) rotateY(var(--ry, -20deg)) rotateZ(var(--rz, 0deg));
  transition: transform .5s var(--ease);
}
.bk.is-scrubbing .bk__pose, .bk.is-dragging .bk__pose { transition: none; }
.bk__face { position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden; overflow: hidden; }
.bk__face--rear { transform: rotateY(180deg); }

.bk__shadow {
  position: absolute; top: 4%; height: 100%;
  left: calc(-4% - var(--open) * 100%); width: calc(112% + var(--open) * 100%);
  transform: translateZ(calc(var(--T) / -2 - 1px)) translate(3%, 5%);
  background: radial-gradient(closest-side, rgba(40, 25, 10, .38), rgba(40, 25, 10, .14) 65%, transparent);
  pointer-events: none;
}
.bk__back { position: absolute; inset: 0; transform-style: preserve-3d; transform: translateZ(calc(var(--T) / -2)); }
.bk__back .bk__face--out { transform: rotateY(180deg); }
.bk__back .bk__face--in { background: var(--paper-page); }

.bk__edge { position: absolute; backface-visibility: hidden; -webkit-backface-visibility: hidden; }
.bk__edge--fore { top: 0; left: calc(var(--W) - var(--T) / 2); width: var(--T); height: var(--H); transform: rotateY(90deg); background: var(--paper-edge); box-shadow: inset 0 0 0 .5px rgba(0,0,0,.08); }
.bk__edge--top { left: 0; top: calc(var(--T) / -2); width: var(--W); height: var(--T); transform: rotateX(90deg); background: repeating-linear-gradient(0deg, #faf7ef 0 1px, #ddd6c5 1px 2px); }
.bk__edge--bottom { left: 0; top: calc(var(--H) - var(--T) / 2); width: var(--W); height: var(--T); transform: rotateX(-90deg); background: repeating-linear-gradient(0deg, #faf7ef 0 1px, #d4ccba 1px 2px); }
.bk__edge--spine { left: calc(var(--T) / -2); top: 0; width: var(--T); height: var(--H); transform: rotateY(-90deg); box-shadow: inset 0 0 0 .5px rgba(0,0,0,.15); }
.bk__edge--spine::before { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(0,0,0,.18), rgba(255,255,255,.18) 45%, rgba(0,0,0,.12)); }
/* the three staples through the rim */
.bk__edge--spine i, .sb__spine i { position: absolute; left: 50%; width: 2px; height: 7%; transform: translateX(-50%); border-radius: 1px; background: linear-gradient(90deg, #8e9398, #f2f4f6 50%, #80858a); box-shadow: 0 0 0 .5px rgba(0,0,0,.25); }
.bk__edge--spine i:nth-child(1), .sb__spine i:nth-child(1) { top: 16%; }
.bk__edge--spine i:nth-child(2), .sb__spine i:nth-child(2) { top: 46.5%; }
.bk__edge--spine i:nth-child(3), .sb__spine i:nth-child(3) { top: 77%; }

.bk__page { position: absolute; inset: 0; transform-style: preserve-3d; }
.bk__page--right { transform: translateZ(calc(var(--T) / 2)); }
.bk__page--left { transform: translateX(-100%) translateZ(calc(var(--T) / 2 + 2px)); }
.bk:not(.is-open) .bk__page--left { display: none; }
.bk__sheet, .bk__leaf .bk__face {
  position: absolute; inset: 0;
  container-type: size;
  background-color: var(--paper-page);
  background-size: 100% 100%;
  background-repeat: no-repeat;
}
.bk__page--right .bk__sheet::after, .bk__leaf .bk__face--front::after { content: ''; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(90deg, rgba(70, 50, 20, .2), rgba(70, 50, 20, 0) 7%, rgba(70, 50, 20, 0) 97%, rgba(70, 50, 20, .06)); }
.bk__page--left .bk__sheet::after, .bk__leaf .bk__face--rear::after { content: ''; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(270deg, rgba(70, 50, 20, .2), rgba(70, 50, 20, 0) 7%, rgba(70, 50, 20, 0) 97%, rgba(70, 50, 20, .06)); }
.bk__doodle { position: absolute; inset: 0; width: 100%; height: 100%; }
.bk canvas { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.bk.pen-on canvas { pointer-events: auto; cursor: crosshair; touch-action: none; }
.bk__slot { position: absolute; inset: 0; pointer-events: none; }

.bk__leaf { position: absolute; inset: 0; transform-style: preserve-3d; transform-origin: left center; display: none; }
.bk__leaf.is-turning { display: block; }
.bk__leaf .bk__face::before { content: ''; position: absolute; inset: 0; z-index: 2; pointer-events: none; background: linear-gradient(90deg, rgba(0,0,0,.2), rgba(0,0,0,0) 60%); opacity: 0; animation: leafshade var(--turn-ms, .7s) ease-in-out; }
@keyframes leafshade { 50% { opacity: 1; } }

.bk__cover {
  position: absolute; inset: 0; transform-style: preserve-3d; transform-origin: left center;
  transform: translateZ(calc(var(--T) / 2 + 1px)) rotateY(calc(var(--open) * -180deg));
}
.bk__cover .bk__face--front { box-shadow: inset 0 0 0 .5px rgba(0,0,0,.12); }
.bk__cover .bk__face--front::after { content: ''; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(90deg, rgba(0,0,0,.5), rgba(0,0,0,.1)); opacity: calc(var(--open) * 1.3); }

/* ==========================================================================
   EXPLORER
   ========================================================================== */
.explorer { display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 28px; align-items: start; }
.panel {
  position: sticky; top: 84px;
  background: #fffdf7; border: 1px solid var(--line); border-radius: 20px; padding: 24px;
  box-shadow: 0 30px 60px -40px rgba(60, 40, 10, .35);
}
.field { border: 0; padding: 0; margin: 0 0 22px; min-width: 0; }
.field legend { font: 700 11px/1 var(--f-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; padding: 0; display: flex; gap: 8px; width: 100%; }
.field__value { color: var(--ink); margin-left: auto; letter-spacing: .04em; }
.field__hint { font-size: 14px; color: var(--ink-2); margin: 10px 0 0; line-height: 1.45; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips button {
  border: 1.5px solid var(--line); background: #fff; border-radius: 999px; padding: 8px 13px;
  font: 500 14px/1 var(--f-body); cursor: pointer; transition: border-color .2s, background .2s, color .2s;
}
.chips button:hover { border-color: var(--ink); }
.chips button.is-on { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.chips button.is-soon { border-style: dashed; }
.swatches { display: flex; flex-wrap: wrap; gap: 7px; }
.swatches button {
  width: 28px; height: 28px; border-radius: 50%; cursor: pointer; padding: 0;
  border: 2px solid #fff; box-shadow: 0 0 0 1px var(--line);
  background: linear-gradient(90deg, var(--s) 0 22%, var(--c) 22%);
  transition: transform .2s, box-shadow .2s;
}
.swatches button:hover { transform: scale(1.12); }
.swatches button.is-on { box-shadow: 0 0 0 2px var(--ink); }
.swatches--art button { width: 46px; height: 60px; border-radius: 6px; background: linear-gradient(160deg, #517a8b, #555c61); position: relative; overflow: hidden; }
.swatches--art button::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 5px; background: var(--sun); }
.swatches--art img { position: absolute; inset: 14% 8% 14% 16%; width: 76%; height: 72%; object-fit: contain; }
.specs { margin: 6px 0 0; padding: 18px 0 0; border-top: 1px dashed var(--line); display: grid; grid-template-columns: auto 1fr; gap: 8px 14px; font-size: 14px; }
.specs dt { font: 700 11px/1.8 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.specs dd { margin: 0; }

.stage-wrap { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.stage {
  position: relative; height: min(76vh, 740px); min-height: 460px;
  border-radius: 24px; border: 1px solid var(--line);
  background: radial-gradient(ellipse at 50% 40%, #fffdf6, var(--paper-2) 80%);
  perspective: 2400px; perspective-origin: 50% 35%;
  overflow: hidden;
  touch-action: pan-y;
}
.stage.pen-mode { perspective: none; }
.stage__hint, .stage__soon { position: absolute; left: 18px; top: 16px; z-index: 5; font: 700 11px/1 var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); transition: opacity .4s; }
.stage__soon { left: auto; right: 18px; background: var(--sun); color: var(--ink); padding: 7px 10px; border-radius: 6px; }
.toolbar { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; justify-content: space-between; }
.toolbar__nav { display: flex; align-items: center; gap: 10px; }
.toolbar__nav .btn { min-width: 140px; }
.toolbar__pages { flex: 1; min-width: 200px; display: flex; flex-direction: column; gap: 6px; }
.toolbar__pages output { font: 700 12px/1 var(--f-mono); letter-spacing: .06em; text-transform: uppercase; }
input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; height: 4px; border-radius: 4px; background: var(--line); outline-offset: 6px; }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 18px; height: 18px; border-radius: 50%; background: var(--crimson); border: 3px solid var(--paper); box-shadow: 0 0 0 1px var(--crimson); cursor: grab; }
input[type="range"]::-moz-range-thumb { width: 14px; height: 14px; border-radius: 50%; background: var(--crimson); border: 3px solid var(--paper); cursor: grab; }
.toolbar__pen { display: flex; align-items: center; gap: 10px; }
.inks { display: flex; gap: 6px; align-items: center; }
.inks button { width: 26px; height: 26px; border-radius: 50%; border: 2px solid var(--paper); box-shadow: 0 0 0 1px var(--line); cursor: pointer; padding: 0; }
.inks button.is-on { box-shadow: 0 0 0 2px var(--ink); }
.inks .ink-tool { width: auto; height: 28px; border-radius: 99px; padding: 0 10px; font: 700 10px/1 var(--f-mono); letter-spacing: .06em; text-transform: uppercase; background: #fff; }

/* ==========================================================================
   SIZES
   ========================================================================== */
.sizes__drawing { max-width: 900px; margin: 0 auto; }
.sizes__drawing svg { width: 100%; height: auto; overflow: visible; }
.sizes__drawing .sz { cursor: default; }
.sizes__drawing .sz rect.body { transition: transform .5s var(--ease); }
.sizes__drawing text { font-family: var(--f-mono); }
.sizes__drawing .sz-name { font-family: var(--f-display); }
.matrix-wrap { overflow-x: auto; margin-top: 60px; }
.matrix { border-collapse: collapse; width: 100%; min-width: 640px; font-size: 15px; }
.matrix th, .matrix td { padding: 14px 12px; border-bottom: 1px solid var(--line); text-align: center; }
.matrix thead th { font: 700 11px/1.3 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.matrix tbody th { text-align: left; font: 700 19px/1.1 var(--f-display); white-space: nowrap; }
.matrix tbody th small { display: block; font: 400 11px/1.6 var(--f-mono); color: var(--muted); letter-spacing: .04em; }
.matrix .yes::before { content: ''; display: inline-block; width: 12px; height: 12px; border-radius: 50%; background: var(--crimson); }
.matrix .soon { font: 700 10px var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.matrix .no { color: #cfc5ad; }

/* ==========================================================================
   ANATOMY
   ========================================================================== */
.anatomy { height: 300vh; background: var(--night); color: #f3ecda; position: relative; }
.anatomy::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle, rgba(255,255,255,.07) 1px, transparent 1.3px) 0 0 / 22px 22px; pointer-events: none; }
.anatomy__sticky {
  position: sticky; top: 0; height: 100vh; min-height: 600px;
  display: grid; grid-template-columns: 1fr 1.2fr 1fr; align-items: center; gap: 24px;
  max-width: 1400px; margin: 0 auto; padding: 80px var(--gutter) 40px;
  overflow: hidden;
}
.anatomy__copy p { color: #bdb5a2; max-width: 340px; }
.anatomy__scene { height: 100%; display: grid; place-items: center; perspective: 2000px; padding-top: 14vh; }
.stack { --p: 0; position: relative; width: 250px; height: 333px; transform-style: preserve-3d; transform: rotateX(58deg) rotateZ(-36deg) translateZ(calc(var(--p) * -120px)); }
.layer {
  position: absolute; inset: 0; transform-style: preserve-3d;
  transform: translateZ(calc(var(--i) * (1.5px + var(--p) * 48px)));
  transition: filter .4s, opacity .4s;
  border-radius: 1px 3px 3px 1px;
}
.layer.is-dim { filter: brightness(.45) saturate(.6); }
.layer--back { background: #efe9d1; box-shadow: 0 30px 60px rgba(0,0,0,.6); overflow: hidden; }
.layer--back .inside span { font-size: 4.2cqw; }
.layer--sheet { background-color: var(--paper-page); background-size: 100% 100%; box-shadow: 0 0 0 .5px rgba(0,0,0,.12); }
.layer--binding { background: none; }
.layer--binding::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 5.5%; background: #fff100; }
.layer--binding i { position: absolute; left: 1.8%; width: 2.2%; height: 12%; border: 2px solid #c9ccd1; border-left: 0; border-radius: 0 2px 2px 0; }
.layer--binding i:nth-child(1) { top: 14%; } .layer--binding i:nth-child(2) { top: 44%; } .layer--binding i:nth-child(3) { top: 74%; }
.layer--board { background: #467082; overflow: hidden; }
.layer--board::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 5.5%; background: #fff100; }
.layer--board svg { position: absolute; right: 7%; top: 6.5%; width: 33%; aspect-ratio: 646/251; fill: #fff100; }
.layer--board img, .layer--uv > span { position: absolute; left: 12%; right: 6%; top: 22%; bottom: 17%; width: 82%; height: 61%; object-fit: contain; }
.layer--film { background: linear-gradient(125deg, rgba(255,255,255,.28), rgba(190,220,255,.1) 30%, rgba(255,210,240,.12) 55%, rgba(255,255,255,.3) 80%, rgba(255,255,255,.05)); border: 1px solid rgba(255,255,255,.45); backdrop-filter: blur(1px); }
.layer--uv .uv-film, .layer--uv .cv__uv { -webkit-mask-size: contain; mask-size: contain; -webkit-mask-position: center; mask-position: center; -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat; }
.layer--uv .uv-film { background: rgba(255,255,255,.28); box-shadow: none; }
.layer--uv .cv__uv { mix-blend-mode: normal; }
.anatomy__labels { list-style: none; margin: 0; padding: 0; counter-reset: l; }
.anatomy__labels li { counter-increment: l; padding: 10px 0 10px 44px; border-bottom: 1px solid rgba(255,255,255,.1); position: relative; opacity: .35; transition: opacity .4s, transform .4s var(--ease); }
.anatomy__labels li::before { content: counter(l, decimal-leading-zero); position: absolute; left: 0; top: 13px; font: 700 12px var(--f-mono); color: var(--sun); }
.anatomy__labels li.is-on { opacity: 1; transform: translateX(6px); }
.anatomy__labels b { display: block; font: 700 18px/1.2 var(--f-display); }
.anatomy__labels span { font-size: 13.5px; line-height: 1.45; color: #bdb5a2; display: block; }

/* ---------- features ---------- */
.features { padding-top: clamp(60px, 9vw, 110px); }
.features__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.feat { background: #fffdf7; border: 1px solid var(--line); border-radius: 20px; padding: 28px; min-height: 200px; display: flex; flex-direction: column; justify-content: flex-end; transition: transform .35s var(--ease), box-shadow .35s; }
.feat:hover { transform: translateY(-4px); box-shadow: 0 24px 40px -30px rgba(60, 40, 10, .5); }
.feat__icon { width: 42px; height: 42px; margin-bottom: auto; fill: none; stroke: var(--crimson); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.feat--big .feat__icon { stroke: #fff; margin-bottom: 18px; }
.feat h3 { font: 700 22px/1.15 var(--f-display); margin: 28px 0 8px; }
.feat p { margin: 0; color: var(--ink-2); font-size: 15px; }
.feat--big { grid-row: span 2; background: var(--crimson); color: #fff; border: 0; justify-content: flex-start; }
.feat--big h3 { margin-top: auto; }
.feat--big p { color: rgba(255,255,255,.85); }
.feat__num { font: 700 clamp(96px, 12vw, 170px)/.85 var(--f-display); letter-spacing: -.03em; }
.feat__num small { font: 700 16px var(--f-mono); letter-spacing: .1em; margin-left: 8px; vertical-align: top; }

/* ---------- gallery reel ---------- */
.gallery { padding-bottom: clamp(60px, 9vw, 110px); }
.reel {
  display: flex; gap: 16px; overflow-x: auto; padding: 0 var(--gutter) 20px;
  scroll-snap-type: x proximity; scrollbar-width: none; cursor: grab;
}
.reel::-webkit-scrollbar { display: none; }
.reel.is-dragging { cursor: grabbing; scroll-snap-type: none; }
.reel__item { flex: none; margin: 0; height: clamp(300px, 56vh, 540px); aspect-ratio: 4 / 5; border-radius: 18px; overflow: hidden; scroll-snap-align: center; background: var(--paper-2); }
.reel__item--wide { aspect-ratio: 16 / 9; }
.reel__item img { width: 100%; height: 100%; object-fit: cover; pointer-events: none; transition: transform .8s var(--ease); }
.reel__item:hover img { transform: scale(1.04); }

/* ---------- coming soon ---------- */
.drafts { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }
.draft {
  position: relative; border: 1.5px dashed #b8ad92; border-radius: 18px; padding: 26px 22px 22px;
  min-height: 300px; display: flex; flex-direction: column; justify-content: flex-end;
  background: rgba(255, 253, 247, .6);
  transition: border-color .3s, background .3s;
}
.draft:hover { border-color: var(--ink); background: #fffdf7; }
.draft svg { position: absolute; top: 24px; left: 22px; width: 92px; height: 120px; fill: none; stroke: var(--ink); stroke-width: 1.4; stroke-dasharray: 4 4; }
.draft__note { position: absolute; top: 32px; right: 20px; font: 700 22px/1 var(--f-hand); color: var(--crimson); transform: rotate(-6deg); }
.draft h3 { font: 700 21px/1.1 var(--f-display); margin: 0 0 6px; }
.draft p { margin: 0 0 14px; font: 400 12px var(--f-mono); color: var(--muted); letter-spacing: .04em; }
.draft .btn { align-self: flex-start; }

/* ---------- contact ---------- */
.contact { background: var(--paper-2); }
.contact__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.contact__addr { font-style: normal; display: flex; flex-direction: column; gap: 6px; margin-top: 30px; font: 400 14px/1.6 var(--f-mono); }
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; background: #fffdf7; border-radius: 22px; padding: 28px; border: 1px solid var(--line); }
.form label { display: flex; flex-direction: column; gap: 6px; font: 700 11px/1 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.form input, .form select, .form textarea {
  font: 400 16px/1.4 var(--f-body); color: var(--ink);
  border: 0; border-bottom: 1.5px solid var(--line); background: transparent; padding: 10px 0; border-radius: 0;
  transition: border-color .2s;
}
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--crimson); }
.form textarea { resize: vertical; background-image: repeating-linear-gradient(transparent 0 29px, var(--line) 29px 30px); line-height: 30px; padding-top: 0; border-bottom: 0; }
.form__full { grid-column: 1 / -1; }
.form__note { font: 400 12px var(--f-mono); color: var(--muted); margin: 0; }
.form__check { flex-direction: row !important; flex-wrap: wrap; align-items: flex-start; gap: 12px !important; font: 400 14px/1.45 var(--f-body) !important; letter-spacing: 0 !important; text-transform: none !important; color: var(--ink-2) !important; cursor: pointer; }
.form__check span { flex: 1; min-width: 0; }
.form__check .form__error { flex-basis: 100%; padding-left: 30px; }
.form__check input { flex: none; width: 18px; height: 18px; margin: 1px 0 0; accent-color: var(--crimson); cursor: pointer; }
.form__trap { position: absolute !important; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form { position: relative; }
.form .is-invalid input, .form .is-invalid select, .form .is-invalid textarea { border-color: var(--crimson); }
.form .is-invalid.form__check span { color: var(--crimson); }
.form__error { display: block; font: 400 12px/1.3 var(--f-body); letter-spacing: 0; text-transform: none; color: var(--crimson); }
.form__note.is-ok { color: #1b7a4a; font-size: 15px; }
.form__note.is-err { color: var(--crimson); font-size: 14px; }
.form button[disabled] { opacity: .6; cursor: progress; transform: none; }

/* ---------- footer ---------- */
.footer { background: var(--ink); color: var(--paper); padding: 90px 0 40px; }
.footer__logo { width: min(620px, 100%); aspect-ratio: 646 / 251; fill: var(--paper); display: block; }
.footer__cols { display: grid; grid-template-columns: repeat(3, auto); justify-content: start; gap: 60px; margin-top: 60px; font: 400 13px/1.8 var(--f-mono); color: #bdb5a2; }
.footer__cols a { text-decoration: none; color: var(--paper); }
.footer__cols a:hover { color: var(--sun); }
.footer__maker img { width: 190px; height: auto; background: var(--paper); padding: 12px 16px; border-radius: 12px; }
.footer__small { margin: 60px 0 0; font: 400 11px var(--f-mono); color: #7d7462; }

/* ---------- reveal ---------- */
[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1080px) {
  .explorer { grid-template-columns: 1fr; }
  .panel { position: static; order: 2; }
  .anatomy__sticky { grid-template-columns: 1fr 1fr; grid-template-rows: auto 1fr; }
  .anatomy__copy { grid-column: 1 / -1; }
  .anatomy__copy .display { font-size: clamp(36px, 5.6vw, 64px); }
  .series { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .shelf--face { overflow-x: auto; justify-content: flex-start; scrollbar-width: none; }
  .shelf--face::after { display: none; }
  .shelf--face { border-bottom: 16px solid var(--ink); }
}

@media (max-width: 820px) {
  body { font-size: 16px; }
  /* backdrop-filter would make the nav the containing block of the fixed menu */
  .nav { gap: 14px; backdrop-filter: none; -webkit-backdrop-filter: none; background: var(--paper); }
  .nav__links {
    position: fixed; inset: 0; flex-direction: column; justify-content: center; align-items: center; gap: 30px;
    background: var(--paper); transform: translateY(-100%); visibility: hidden;
    transition: transform .5s var(--ease), visibility 0s .5s; z-index: -1;
  }
  .nav.menu-open .nav__links { visibility: visible; transition: transform .5s var(--ease); }
  .nav__links a { font: 700 36px/1 var(--f-display); letter-spacing: 0; text-transform: none; }
  .nav.menu-open .nav__links { transform: none; }
  .nav .btn { margin-left: auto; }
  .nav__menu { display: grid; gap: 6px; width: 40px; height: 40px; place-content: center; border: 0; background: none; cursor: pointer; }
  .nav__menu span { width: 24px; height: 2px; background: var(--ink); transition: transform .3s; }
  .nav.menu-open .nav__menu span:first-child { transform: translateY(4px) rotate(45deg); }
  .nav.menu-open .nav__menu span:last-child { transform: translateY(-4px) rotate(-45deg); }

  .hero { height: 240vh; }
  .hero__sticky { grid-template-columns: 1fr; grid-template-rows: auto 1fr; padding-top: 84px; align-items: start; }
  .hero__title { font-size: clamp(52px, 16vw, 96px); margin-bottom: 16px; }
  .hero__lede { font-size: 16px; margin-bottom: 18px; }
  .hero__stats { display: none; }
  .hero__stage { min-height: 0; }
  .hero__scroll { display: none; }
  .hero__cta .btn { padding: 12px 18px; }

  .anatomy { height: 280vh; }
  .anatomy__sticky { grid-template-columns: 1fr; grid-template-rows: auto 1fr auto; padding-top: 76px; gap: 0; }
  .anatomy__copy p { display: none; }
  .anatomy__scene { min-height: 0; }
  .stack { width: 170px; height: 227px; }
  .anatomy__labels li { display: none; padding: 10px 0 10px 40px; border: 0; }
  .anatomy__labels li.is-current { display: block; opacity: 1; }

  .features__grid { grid-template-columns: 1fr 1fr; }
  .feat--big { grid-column: 1 / -1; grid-row: auto; }
  .contact__grid { grid-template-columns: 1fr; gap: 36px; }
  .form { grid-template-columns: 1fr; padding: 22px; }
  .footer__cols { grid-template-columns: 1fr; gap: 20px; }
  .stage { height: 54vh; min-height: 340px; }
  .toolbar { gap: 12px; }
  .toolbar__pages { order: 3; flex-basis: 100%; }
}

@media (max-width: 520px) {
  .features__grid { grid-template-columns: 1fr; }
  .shelf { padding-left: 12px; padding-right: 12px; }
  .toolbar__nav .btn { min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  .hero { height: auto; }
  .hero__sticky { position: relative; }
  .anatomy { height: auto; }
  .anatomy__sticky { position: relative; }
  [data-reveal] { opacity: 1; transform: none; }
}

/* Wild Series shelf: only three books, so they stand face-out like a shop display */
.shelf--face { gap: 22px; }
.shelf--face .sb, .shelf--face .sb:hover { width: calc(var(--w) * .62 + var(--t) * .8 + 10px); }
.shelf--face .sb__3d { transform: translateZ(calc(var(--w) / -2)) rotateY(-52deg); }
.shelf--face .sb:hover .sb__3d, .shelf--face .sb:focus-visible .sb__3d, .shelf--face .sb.is-out .sb__3d { transform: translateY(-22px) translateZ(calc(var(--w) / -2)) rotateY(-80deg); }
.shelf--face .sb__shadow { width: calc(var(--w) * .6); }
.shelf--face .sb .cv__uv { display: block; }
.shelf--scroll { scrollbar-width: none; cursor: grab; -webkit-mask-image: linear-gradient(90deg, transparent, #000 28px, #000 calc(100% - 56px), transparent); mask-image: linear-gradient(90deg, transparent, #000 28px, #000 calc(100% - 56px), transparent); }
.shelf--scroll::-webkit-scrollbar { display: none; }
.shelf--scroll.is-dragging { cursor: grabbing; }
.shelf--scroll.is-dragging .sb { pointer-events: none; }