/* =========================================================================
   LIFE IN 2045 — design system
   Gold = the book and the purchase path.  Cyan = the community and live state.
   Nothing else gets a colour.
   ========================================================================= */

:root{
  /* Surfaces */
  --ink:        #070A12;
  --ink-2:      #0C1120;
  --ink-3:      #121A2C;
  --line:       #1E2740;
  --line-soft:  #161E31;

  /* Text */
  --paper:      #ECEFF5;
  --paper-2:    #A9B3C7;
  --paper-3:    #6E7A93;

  /* Accents */
  --gold:       #D9A521;
  --gold-lit:   #F2C75C;
  --gold-dim:   rgba(217,165,33,.14);
  --signal:     #4FD8E8;
  --signal-dim: rgba(79,216,232,.13);
  --alert:      #E8735C;

  /* Type */
  --display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --body:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono:    "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Rhythm */
  --gutter: 24px;
  --max:    1280px;
  --sec:    clamp(64px, 9vw, 132px);
  --radius: 3px;
}

*,*::before,*::after{ box-sizing:border-box; }

html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }

body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--body);
  font-size:17px;
  line-height:1.65;
  font-feature-settings:"kern","liga";
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img,video{ max-width:100%; height:auto; display:block; }

a{ color:var(--gold-lit); text-decoration:none; }
a:hover{ color:var(--gold); }

:focus-visible{
  outline:2px solid var(--gold-lit);
  outline-offset:3px;
  border-radius:2px;
}

::selection{ background:var(--gold); color:var(--ink); }

.skip{
  position:absolute; left:-9999px; top:0; z-index:999;
  background:var(--gold); color:var(--ink); padding:12px 20px; font-weight:600;
}
.skip:focus{ left:12px; top:12px; }

/* ---------- Type scale ------------------------------------------------- */

h1,h2,h3,h4{
  font-family:var(--display);
  font-variation-settings:"SOFT" 0,"WONK" 0,"opsz" 40;
  font-weight:500;
  line-height:1.08;
  letter-spacing:-.015em;
  margin:0 0 .5em;
  text-wrap:balance;
}
h1{ font-size:clamp(2.6rem, 6.2vw, 5rem); letter-spacing:-.03em; }
h2{ font-size:clamp(2rem, 4vw, 3.1rem); letter-spacing:-.022em; }
h3{ font-size:clamp(1.3rem, 2.2vw, 1.75rem); }
h4{ font-size:1.08rem; font-family:var(--body); font-weight:600; letter-spacing:-.005em; }

p{ margin:0 0 1.1em; }
p:last-child{ margin-bottom:0; }

strong{ font-weight:600; color:#fff; }
em{ font-style:italic; }

.lede{
  font-size:clamp(1.12rem,1.7vw,1.35rem);
  line-height:1.6;
  color:var(--paper-2);
  max-width:66ch;
}

.eyebrow{
  font-family:var(--mono);
  font-size:.7rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--gold);
  margin:0 0 18px;
  display:block;
  font-weight:500;
}
.eyebrow--signal{ color:var(--signal); }

.small{ font-size:.86rem; color:var(--paper-2); line-height:1.6; }
.mono{ font-family:var(--mono); font-size:.8rem; letter-spacing:.04em; }
.dim{ color:var(--paper-3); }

/* ---------- Layout ------------------------------------------------------ */

.wrap{ width:100%; max-width:var(--max); margin-inline:auto; padding-inline:var(--gutter); }
.wrap--narrow{ max-width:820px; }

.section{ padding-block:var(--sec); position:relative; }
.section--tight{ padding-block:calc(var(--sec) * .58); }
.section--raised{ background:var(--ink-2); }
.section + .section{ border-top:1px solid var(--line-soft); }

.grid{ display:grid; gap:var(--gutter); }
.g2{ grid-template-columns:repeat(2,1fr); }
.g3{ grid-template-columns:repeat(3,1fr); }
.g4{ grid-template-columns:repeat(4,1fr); }

@media (max-width:900px){
  .g3,.g4{ grid-template-columns:repeat(2,1fr); }
}
@media (max-width:640px){
  .g2,.g3,.g4{ grid-template-columns:1fr; }
}

/* The spine: a hairline rule that runs beside a block, echoing a book spine.
   Reused as the chronology rail on Inside the Book. */
.spine{
  border-left:1px solid var(--line);
  padding-left:clamp(18px,3vw,36px);
}
.spine--gold{ border-left-color:var(--gold); }
.spine--signal{ border-left-color:var(--signal); }

.rule{ height:1px; background:var(--line-soft); border:0; margin:0; }

/* ---------- Buttons ----------------------------------------------------- */

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:9px;
  font-family:var(--body); font-size:.94rem; font-weight:600; letter-spacing:.005em;
  padding:14px 26px; min-height:48px;
  border-radius:var(--radius); border:1px solid transparent;
  cursor:pointer; text-align:center;
  transition:background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.btn:disabled{ opacity:.42; cursor:not-allowed; }

.btn--primary{ background:var(--gold); color:#120D00; border-color:var(--gold); }
.btn--primary:hover:not(:disabled){ background:var(--gold-lit); border-color:var(--gold-lit); color:#120D00; }

.btn--ghost{ background:transparent; color:var(--paper); border-color:var(--line); }
.btn--ghost:hover{ border-color:var(--gold); color:var(--gold-lit); }

.btn--signal{ background:transparent; color:var(--signal); border-color:rgba(79,216,232,.42); }
.btn--signal:hover{ background:var(--signal-dim); color:var(--signal); border-color:var(--signal); }

.btn--sm{ padding:9px 16px; min-height:38px; font-size:.83rem; }
.btn--block{ width:100%; }

.btn-row{ display:flex; flex-wrap:wrap; gap:14px; }

.textlink{
  font-family:var(--mono); font-size:.78rem; letter-spacing:.12em; text-transform:uppercase;
  color:var(--gold); border-bottom:1px solid var(--gold-dim); padding-bottom:3px;
  display:inline-block; transition:border-color .18s ease;
}
.textlink:hover{ border-bottom-color:var(--gold); }
.textlink--signal{ color:var(--signal); border-bottom-color:var(--signal-dim); }
.textlink--signal:hover{ border-bottom-color:var(--signal); color:var(--signal); }

/* ---------- Announcement bar + header ----------------------------------- */

.announce{
  background:var(--ink-2);
  border-bottom:1px solid var(--line-soft);
  font-family:var(--mono); font-size:.74rem; letter-spacing:.08em;
  color:var(--paper-2);
  text-align:center;
  padding:9px var(--gutter);
}
.announce b{ color:var(--gold); font-weight:500; }
.announce__count{ color:var(--paper); font-variant-numeric:tabular-nums; }

.header{
  position:sticky; top:0; z-index:80;
  background:rgba(7,10,18,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-soft);
}
.header__in{
  display:flex; align-items:center; gap:20px;
  min-height:70px;
}
.brand{
  font-family:var(--mono); font-size:.86rem; font-weight:500;
  letter-spacing:.3em; color:var(--paper); text-transform:uppercase;
  white-space:nowrap;
}
.brand:hover{ color:var(--gold-lit); }

.nav{ display:flex; align-items:center; gap:4px; margin-left:auto; }
.nav a{
  color:var(--paper-2); font-size:.88rem; font-weight:500;
  padding:9px 12px; border-radius:var(--radius);
  transition:color .16s ease, background .16s ease;
}
.nav a:hover{ color:var(--paper); background:var(--ink-3); }
.nav a[aria-current="page"]{ color:var(--gold-lit); }
.nav a.nav--community[aria-current="page"]{ color:var(--signal); }

.header__actions{ display:flex; align-items:center; gap:10px; margin-left:8px; }

a.signin{ text-decoration:none; }
.signin{
  display:inline-flex; align-items:center; gap:8px;
  font-size:.83rem; color:var(--paper-2);
  padding:8px 12px; border:1px solid var(--line); border-radius:var(--radius);
  background:transparent; cursor:pointer; font-family:var(--body);
}
.signin:hover{ border-color:var(--signal); color:var(--signal); }
.signin__dot{ width:6px; height:6px; border-radius:50%; background:var(--paper-3); }

.burger{
  display:none; background:transparent; border:1px solid var(--line);
  color:var(--paper); border-radius:var(--radius); padding:10px 12px; cursor:pointer;
}

@media (max-width:1080px){
  .nav{
    position:fixed; inset:70px 0 auto 0;
    flex-direction:column; align-items:stretch; gap:0;
    background:var(--ink-2); border-bottom:1px solid var(--line);
    padding:10px var(--gutter) 22px;
    max-height:calc(100dvh - 70px); overflow-y:auto;
    display:none;
  }
  .nav[data-open="true"]{ display:flex; }
  .nav a{ padding:14px 4px; border-bottom:1px solid var(--line-soft); border-radius:0; }
  .burger{ display:block; margin-left:auto; }
  .header__actions{ margin-left:0; }
  .header__actions .btn{ padding:11px 16px; min-height:42px; font-size:.85rem; }
  .signin{ display:none; }
}
@media (max-width:520px){
  .header__actions .btn .btn__full{ display:none; }
}
.btn__short{ display:none; }
@media (max-width:520px){ .btn__short{ display:inline; } }

/* ---------- Hero -------------------------------------------------------- */

.hero{ position:relative; min-height:min(88vh,860px); display:flex; align-items:flex-end; overflow:hidden; }
.hero__media{ position:absolute; inset:0; z-index:0; }
.hero__media video,.hero__media img{ width:100%; height:100%; object-fit:cover; }
.hero__scrim{
  position:absolute; inset:0; z-index:1;
  background:
    radial-gradient(ellipse 44% 22% at 56% 90%, rgba(7,10,18,1) 0%, rgba(7,10,18,.96) 60%, rgba(7,10,18,0) 100%),
    linear-gradient(180deg, rgba(7,10,18,.72) 0%, rgba(7,10,18,.30) 34%, rgba(7,10,18,.90) 82%, var(--ink) 100%),
    linear-gradient(90deg, rgba(7,10,18,.86) 0%, rgba(7,10,18,.18) 68%);
}
.hero__media video,.hero__media img{ object-position:50% 40%; }
@media (max-width:900px){
  .hero__media video,.hero__media img{ object-position:62% 30%; }
  .hero__scrim{
    background:
      linear-gradient(180deg, rgba(7,10,18,.70) 0%, rgba(7,10,18,.45) 30%, rgba(7,10,18,.94) 62%, var(--ink) 100%);
  }
}
.hero__in{ position:relative; z-index:2; width:100%; padding-block:clamp(56px,9vw,110px); }
.hero__grid{ display:grid; grid-template-columns:minmax(0,1.55fr) minmax(0,.9fr); gap:clamp(28px,5vw,64px); align-items:end; }

.hero h1{ margin-bottom:14px; }
.hero__sub{
  font-family:var(--display); font-variation-settings:"SOFT" 0,"WONK" 0;
  font-size:clamp(1.05rem,1.9vw,1.5rem); font-weight:300; font-style:italic;
  color:var(--paper-2); line-height:1.35; max-width:30ch; margin:0 0 30px;
}
.hero__thesis{
  min-height:3.4em; margin:0 0 30px; max-width:44ch;
  font-size:clamp(1.05rem,1.6vw,1.22rem); line-height:1.55; color:var(--paper);
  border-left:2px solid var(--gold); padding-left:18px;
}
.hero__thesis span{ transition:opacity .5s ease; display:block; }
.hero__trust{ margin-top:26px; font-family:var(--mono); font-size:.72rem; letter-spacing:.14em; color:var(--paper-3); text-transform:uppercase; }

.hero__cover{ position:relative; }
.hero__cover video{
  width:100%; border-radius:2px;
  box-shadow:0 40px 90px -30px rgba(0,0,0,.9), 0 0 0 1px rgba(236,239,245,.09);
}
.hero__cover .book3d{ max-width:360px; padding-block:24px 40px; }
@media (max-width:900px){
  .hero__grid{ grid-template-columns:1fr; }
  .hero__cover{ max-width:230px; order:-1; margin-bottom:8px; }
  .hero__cover .book3d{ max-width:200px; padding-block:8px 20px; }
}

/* ---------- Thesis statement ------------------------------------------- */

.thesis{
  font-family:var(--display); font-variation-settings:"SOFT" 0,"WONK" 0;
  font-size:clamp(1.7rem,4.1vw,3.15rem); line-height:1.18; letter-spacing:-.022em;
  font-weight:400; max-width:20ch; margin:0;
}
.thesis b{ color:var(--gold-lit); font-weight:400; }

/* ---------- The Fork ---------------------------------------------------- */

.fork__art{ display:block; width:min(100%,760px); height:auto; margin:0 auto 26px; }
.fork__art .trunk{ stroke:var(--paper-2); }
.fork__art .lib{ stroke:var(--gold); }
.fork__art .dom{ stroke:var(--alert); }
.fork__art .node{ fill:var(--ink); stroke:var(--paper-2); }
.fork__art text{ font-family:var(--mono); font-size:11px; letter-spacing:.18em; text-transform:uppercase; fill:var(--paper-3); }
.fork{ display:grid; grid-template-columns:1fr 1fr; gap:2px; background:var(--line); border:1px solid var(--line); }
.fork__branch{
  background:var(--ink-2); padding:clamp(28px,4vw,52px);
  position:relative; transition:background .3s ease;
}
.fork__branch:hover,.fork__branch:focus-within{ background:var(--ink-3); }
.fork__branch h3{ margin-bottom:10px; }
.fork__branch--lib h3{ color:var(--gold-lit); }
.fork__branch--dom h3{ color:var(--alert); }
.fork__key{
  font-family:var(--mono); font-size:.7rem; letter-spacing:.2em; text-transform:uppercase;
  color:var(--paper-3); margin-bottom:22px; display:block;
}
.fork__pivot{
  text-align:center; padding:26px var(--gutter) 0;
  font-family:var(--mono); font-size:.76rem; letter-spacing:.16em; text-transform:uppercase; color:var(--paper-3);
}
@media (max-width:640px){ .fork{ grid-template-columns:1fr; } }

/* ---------- Part cards -------------------------------------------------- */

.parts{ display:grid; grid-template-columns:repeat(3,1fr); gap:var(--gutter); }
@media (max-width:1000px){ .parts{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:620px){ .parts{ grid-template-columns:1fr; } }

.part{
  display:flex; flex-direction:column;
  background:var(--ink-2); border:1px solid var(--line-soft);
  border-radius:var(--radius); overflow:hidden;
  transition:border-color .22s ease, transform .22s ease;
  color:inherit;
}
.part:hover{ border-color:var(--gold); transform:translateY(-3px); color:inherit; }
.part__img{ aspect-ratio:16/9; overflow:hidden; background:var(--ink-3); position:relative; }
.part__video{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; opacity:0; transition:opacity .15s ease; pointer-events:none; }
.part__video.is-on{ opacity:1; }
.part__img img{ width:100%; height:100%; object-fit:cover; transition:transform .5s ease; }
.part:hover .part__img img{ transform:scale(1.04); }
.part__body{ padding:22px 22px 26px; display:flex; flex-direction:column; flex:1; }
.part__meta{
  display:flex; align-items:baseline; gap:12px; margin-bottom:10px;
  font-family:var(--mono); font-size:.74rem; letter-spacing:.1em;
}
.part__num{ color:var(--gold); font-weight:500; }
.part__years{ color:var(--paper-3); }
.part__title{ font-family:var(--display); font-variation-settings:"SOFT" 0,"WONK" 0; font-size:1.22rem; line-height:1.2; margin:0 0 8px; font-weight:500; }
.part__tag{ color:var(--paper-2); font-size:.92rem; line-height:1.5; margin:0 0 18px; flex:1; }
.part--bonus{ border-color:rgba(217,165,33,.36); }
.part--bonus .part__num{ letter-spacing:.14em; }

/* ---------- Chronology spine (Inside the Book) — the signature ---------- */

.chrono{ position:relative; }
.chrono__rail{
  position:sticky; top:70px; z-index:20;
  background:rgba(7,10,18,.92); backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  padding:14px 0;
}
.chrono__track{
  position:relative; height:3px; background:var(--line);
  margin:16px 0 10px; border-radius:2px;
}
.chrono__fill{ position:absolute; inset:0 auto 0 0; width:0; background:var(--gold); border-radius:2px; transition:width .35s ease; }
.chrono__pin{
  position:absolute; top:50%; width:9px; height:9px; margin:-4.5px 0 0 -4.5px;
  border-radius:50%; background:var(--ink); border:1px solid var(--paper-3);
}
.chrono__pin[data-on="true"]{ background:var(--signal); border-color:var(--signal); }
.chrono__head{ display:flex; align-items:baseline; justify-content:space-between; gap:16px; flex-wrap:wrap; }
.chrono__year{ font-family:var(--mono); font-size:1.05rem; color:var(--gold); letter-spacing:.08em; font-variant-numeric:tabular-nums; }
.chrono__label{ font-family:var(--mono); font-size:.72rem; letter-spacing:.16em; text-transform:uppercase; color:var(--paper-2); }
.chrono__ends{ display:flex; justify-content:space-between; font-family:var(--mono); font-size:.68rem; letter-spacing:.12em; color:var(--paper-3); }

.chapter{ padding-block:clamp(56px,8vw,104px); border-bottom:1px solid var(--line-soft); }
.chapter__grid{ display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1.1fr); gap:clamp(28px,4.5vw,60px); align-items:start; }
.chapter__num{
  font-family:var(--display); font-variation-settings:"SOFT" 0,"WONK" 0;
  font-size:clamp(3.4rem,7vw,6rem); line-height:.85; color:var(--gold);
  display:block; margin-bottom:8px; font-weight:400;
}
.chapter__years{ font-family:var(--mono); font-size:.8rem; letter-spacing:.16em; color:var(--paper-3); display:block; margin-bottom:26px; }
.chapter__tagline{
  font-family:var(--display); font-variation-settings:"SOFT" 0,"WONK" 0; font-style:italic;
  font-size:clamp(1.15rem,2vw,1.5rem); color:var(--paper); line-height:1.3; margin:0 0 22px;
}
.chapter__img{ border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; }
.chapter figcaption{ font-family:var(--mono); font-size:.7rem; letter-spacing:.1em; color:var(--paper-3); padding:10px 2px 0; text-transform:uppercase; }
@media (max-width:860px){ .chapter__grid{ grid-template-columns:1fr; } }

.chips{ display:flex; flex-wrap:wrap; gap:8px; margin-top:20px; }
.chip{
  font-family:var(--mono); font-size:.72rem; letter-spacing:.06em;
  padding:6px 11px; border:1px solid var(--line); border-radius:100px;
  color:var(--paper-2); background:var(--ink-2);
}
.chip--on{ border-color:var(--gold); color:var(--gold-lit); background:var(--gold-dim); }

/* Marker: events that cross Part boundaries */
.marker{
  display:grid; grid-template-columns:auto 1fr; gap:18px; align-items:baseline;
  padding:20px 0; border-top:1px dashed var(--line);
}
.marker__year{ font-family:var(--mono); font-size:.86rem; color:var(--signal); letter-spacing:.08em; }
.marker__name{ font-size:.94rem; color:var(--paper-2); }
.marker__name b{ color:var(--paper); font-weight:500; }

/* ---------- Key Ideas --------------------------------------------------- */

.filters{ display:flex; flex-wrap:wrap; gap:10px; align-items:center; margin:26px 0 34px; }
.idea-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:var(--gutter); }
@media (max-width:950px){ .idea-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:620px){ .idea-grid{ grid-template-columns:1fr; } }
.idea{
  background:var(--ink-2); border:1px solid var(--line-soft); border-radius:var(--radius);
  padding:24px; display:flex; flex-direction:column; gap:10px;
}
.idea h3{ font-size:1.08rem; margin:0; }
.idea p{ font-size:.92rem; color:var(--paper-2); line-height:1.55; margin:0; flex:1; }
.idea__foot{ display:flex; align-items:center; justify-content:space-between; gap:12px; padding-top:6px; }
.idea__part{ font-family:var(--mono); font-size:.7rem; letter-spacing:.1em; color:var(--gold); }

.empty{
  border:1px dashed var(--line); border-radius:var(--radius);
  padding:44px 28px; text-align:center; color:var(--paper-2);
  grid-column:1/-1;
}
.empty h3{ margin-bottom:8px; }

/* ---------- Forms ------------------------------------------------------- */

.field{ display:flex; flex-direction:column; gap:7px; margin-bottom:20px; }
.field > label{ font-size:.82rem; font-weight:600; letter-spacing:.01em; color:var(--paper); }
.field .hint{ font-size:.78rem; color:var(--paper-3); }

input[type=text],input[type=email],input[type=tel],input[type=number],input[type=search],
input[type=date],select,textarea{
  width:100%; font-family:var(--body); font-size:.95rem; color:var(--paper);
  background:var(--ink-2); border:1px solid var(--line); border-radius:var(--radius);
  padding:12px 14px; min-height:46px;
  transition:border-color .16s ease, background .16s ease;
}
textarea{ min-height:130px; resize:vertical; line-height:1.6; }
input:hover,select:hover,textarea:hover{ border-color:var(--paper-3); }
input:focus,select:focus,textarea:focus{ border-color:var(--gold); background:var(--ink-3); outline:none; }
input::placeholder,textarea::placeholder{ color:var(--paper-3); }
select{ appearance:none; background-image:linear-gradient(45deg,transparent 50%,var(--paper-2) 50%),linear-gradient(135deg,var(--paper-2) 50%,transparent 50%); background-position:calc(100% - 19px) 21px, calc(100% - 14px) 21px; background-size:5px 5px,5px 5px; background-repeat:no-repeat; padding-right:38px; }

[data-invalid="true"] input,[data-invalid="true"] select,[data-invalid="true"] textarea{ border-color:var(--alert); }
.err{ font-size:.79rem; color:var(--alert); display:none; }
[data-invalid="true"] .err{ display:block; }

.check{ display:grid; grid-template-columns:auto 1fr; gap:11px; align-items:start; margin-bottom:14px; font-size:.87rem; color:var(--paper-2); line-height:1.5; }
.check input{ width:17px; height:17px; min-height:0; margin-top:2px; accent-color:var(--gold); }

fieldset{ border:0; padding:0; margin:0 0 22px; }
legend{ font-size:.82rem; font-weight:600; color:var(--paper); padding:0 0 10px; }

.opt-row{ display:grid; gap:10px; }
.opt{
  display:grid; grid-template-columns:auto 1fr auto; gap:13px; align-items:center;
  border:1px solid var(--line); border-radius:var(--radius); padding:14px 16px;
  background:var(--ink-2); cursor:pointer; transition:border-color .16s ease;
}
.opt:hover{ border-color:var(--paper-3); }
.opt:has(input:checked){ border-color:var(--gold); background:var(--gold-dim); }
.opt input{ width:17px; height:17px; min-height:0; accent-color:var(--gold); }
.opt__name{ font-weight:600; font-size:.94rem; }
.opt__note{ display:block; font-weight:400; font-size:.79rem; color:var(--paper-3); }
.opt__price{ font-family:var(--mono); font-size:.9rem; color:var(--gold-lit); }

.stepper{ display:inline-flex; align-items:center; border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; }
.stepper button{ background:var(--ink-2); border:0; color:var(--paper); width:44px; height:46px; font-size:1.2rem; cursor:pointer; }
.stepper button:hover{ background:var(--ink-3); color:var(--gold-lit); }
.stepper input{ width:64px; text-align:center; border:0; border-inline:1px solid var(--line); border-radius:0; background:var(--ink); font-family:var(--mono); }

.honey{ position:absolute; left:-9999px; opacity:0; height:0; width:0; }

.formnote{
  margin-top:16px; font-size:.8rem; color:var(--paper-3); line-height:1.6;
  border-left:2px solid var(--line); padding-left:14px;
}
.status{ display:none; margin-top:18px; padding:16px 18px; border-radius:var(--radius); font-size:.9rem; line-height:1.55; }
.status[data-state="ok"]{ display:block; background:var(--gold-dim); border:1px solid var(--gold); color:var(--paper); }
.status[data-state="live"]{ display:block; background:var(--signal-dim); border:1px solid rgba(79,216,232,.5); color:var(--paper); }
.status[data-state="err"]{ display:block; background:rgba(232,115,92,.12); border:1px solid var(--alert); color:var(--paper); }

/* Order summary */
.summary{
  background:var(--ink-2); border:1px solid var(--line); border-radius:var(--radius);
  padding:26px; position:sticky; top:96px;
}
.summary__line{ display:flex; justify-content:space-between; gap:16px; padding:9px 0; font-size:.9rem; color:var(--paper-2); }
.summary__line b{ color:var(--paper); font-weight:500; }
.summary__total{ display:flex; justify-content:space-between; gap:16px; padding-top:16px; margin-top:10px; border-top:1px solid var(--line); font-size:1.05rem; }
.summary__total b{ font-family:var(--mono); color:var(--gold-lit); font-weight:500; }
.trust{ display:flex; flex-wrap:wrap; gap:8px; margin-top:20px; }
.trust span{ font-family:var(--mono); font-size:.68rem; letter-spacing:.08em; color:var(--paper-3); border:1px solid var(--line); border-radius:2px; padding:5px 9px; }

.order-grid{ display:grid; grid-template-columns:minmax(0,1.6fr) minmax(0,1fr); gap:clamp(26px,4vw,52px); align-items:start; }
@media (max-width:900px){ .order-grid{ grid-template-columns:1fr; } .summary{ position:static; } }

/* ---------- Community --------------------------------------------------- */

.thread{
  display:grid; grid-template-columns:1fr auto; gap:18px; align-items:center;
  padding:20px 22px; border:1px solid var(--line-soft); border-radius:var(--radius);
  background:var(--ink-2); margin-bottom:12px;
  transition:border-color .18s ease;
}
.thread:hover{ border-color:var(--signal); }
.thread__title{ font-family:var(--display); font-variation-settings:"SOFT" 0,"WONK" 0; font-size:1.1rem; font-weight:500; margin:0 0 8px; line-height:1.25; }
.thread__meta{ display:flex; flex-wrap:wrap; gap:8px 14px; font-family:var(--mono); font-size:.7rem; letter-spacing:.08em; color:var(--paper-3); align-items:center; }
.thread__count{ font-family:var(--mono); font-size:.8rem; color:var(--paper-3); text-align:right; white-space:nowrap; }
.thread__count b{ display:block; font-size:1.3rem; color:var(--paper-2); font-weight:400; }

.seedmark{
  font-family:var(--mono); font-size:.63rem; letter-spacing:.14em; text-transform:uppercase;
  color:var(--signal); border:1px solid rgba(79,216,232,.4); border-radius:100px; padding:3px 9px;
}
.board{
  border:1px solid var(--line-soft); border-radius:var(--radius); background:var(--ink-2);
  padding:22px; display:flex; flex-direction:column; gap:8px;
}
.board__n{ font-family:var(--mono); font-size:.72rem; color:var(--signal); letter-spacing:.12em; }
.board h3{ font-size:1.05rem; margin:0; }
.board p{ font-size:.88rem; color:var(--paper-2); margin:0; }

.group{
  border:1px solid var(--line-soft); border-radius:var(--radius); background:var(--ink-2);
  padding:26px; display:flex; flex-direction:column; gap:14px;
}
.group__stat{ display:flex; gap:26px; flex-wrap:wrap; font-family:var(--mono); font-size:.74rem; color:var(--paper-3); letter-spacing:.08em; }
.group__stat b{ display:block; color:var(--paper); font-size:.95rem; font-weight:500; margin-top:3px; }

.qa{ border-left:2px solid var(--signal); padding-left:20px; margin-bottom:28px; }
.qa__who{ font-family:var(--mono); font-size:.7rem; letter-spacing:.14em; text-transform:uppercase; color:var(--signal); margin-bottom:8px; display:block; }

.live{ display:inline-flex; align-items:center; gap:7px; font-family:var(--mono); font-size:.7rem; letter-spacing:.12em; text-transform:uppercase; color:var(--signal); }
.live__dot{ width:7px; height:7px; border-radius:50%; background:var(--signal); }

/* ---------- Editor ------------------------------------------------------ */

.editor{ border:1px solid var(--line); border-radius:var(--radius); background:var(--ink-2); }
.editor__bar{ display:flex; gap:4px; padding:8px; border-bottom:1px solid var(--line); flex-wrap:wrap; align-items:center; }
.editor__bar button{
  background:transparent; border:1px solid transparent; color:var(--paper-2);
  font-family:var(--mono); font-size:.72rem; padding:6px 10px; border-radius:2px; cursor:pointer;
}
.editor__bar button:hover{ background:var(--ink-3); color:var(--paper); }
.editor__bar button[aria-pressed="true"]{ border-color:var(--signal); color:var(--signal); }
.editor textarea{ border:0; background:transparent; border-radius:0; }
.editor__preview{ padding:16px; min-height:130px; font-size:.94rem; line-height:1.65; color:var(--paper-2); display:none; }
.editor__foot{ display:flex; justify-content:space-between; align-items:center; gap:14px; padding:10px 14px; border-top:1px solid var(--line); font-size:.76rem; color:var(--paper-3); flex-wrap:wrap; }

/* ---------- Misc blocks ------------------------------------------------- */

.stack{ display:flex; flex-direction:column; gap:clamp(18px,2.4vw,30px); }

.audience{ display:grid; grid-template-columns:repeat(3,1fr); gap:var(--gutter); }
@media (max-width:820px){ .audience{ grid-template-columns:1fr; } }
.audience__col{ border-top:2px solid var(--gold); padding-top:22px; }
.audience__col h3{ font-size:1.12rem; margin-bottom:10px; }
.audience__col p{ font-size:.94rem; color:var(--paper-2); margin:0; }

.author-grid{ display:grid; grid-template-columns:minmax(0,.85fr) minmax(0,1.4fr); gap:clamp(26px,4vw,56px); align-items:start; }
@media (max-width:820px){ .author-grid{ grid-template-columns:1fr; } }
.badge-list{ display:flex; flex-direction:column; gap:12px; margin:24px 0 0; padding:0; list-style:none; }
.badge-list li{ display:grid; grid-template-columns:auto 1fr; gap:12px; font-size:.9rem; color:var(--paper-2); }
.badge-list i{ color:var(--gold); font-style:normal; font-family:var(--mono); font-size:.75rem; padding-top:3px; }

.media-figure{ border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; background:var(--ink-2); }
.media-figure--book{ border:0; background:transparent; overflow:visible; padding:32px 24px 8px; }
.media-figure--book figcaption{ border-top:0; margin-top:36px; }
.media-figure figcaption{ padding:12px 16px; font-family:var(--mono); font-size:.7rem; letter-spacing:.1em; text-transform:uppercase; color:var(--paper-3); border-top:1px solid var(--line); }

.faq{ border-top:1px solid var(--line-soft); }
.faq details{ border-bottom:1px solid var(--line-soft); }
.faq summary{
  cursor:pointer; padding:22px 40px 22px 0; position:relative;
  font-family:var(--display); font-variation-settings:"SOFT" 0,"WONK" 0;
  font-size:1.12rem; font-weight:500; list-style:none;
}
.faq summary::-webkit-details-marker{ display:none; }
.faq summary::after{ content:"+"; position:absolute; right:6px; top:20px; color:var(--gold); font-family:var(--mono); font-size:1.2rem; }
.faq details[open] summary::after{ content:"–"; }
.faq details > div{ padding:0 0 24px; color:var(--paper-2); font-size:.95rem; max-width:70ch; }

.postcard{
  border:1px solid var(--line-soft); border-radius:var(--radius); background:var(--ink-2);
  overflow:hidden; display:flex; flex-direction:column; color:inherit;
}
.postcard:hover{ border-color:var(--gold); color:inherit; }
.postcard__img{ aspect-ratio:16/9; overflow:hidden; }
.postcard__img img{ width:100%; height:100%; object-fit:cover; }
.postcard__body{ padding:20px; display:flex; flex-direction:column; gap:9px; flex:1; }
.postcard__meta{ font-family:var(--mono); font-size:.7rem; letter-spacing:.1em; color:var(--paper-3); }
.postcard h3{ font-size:1.1rem; margin:0; }
.postcard p{ font-size:.9rem; color:var(--paper-2); margin:0; flex:1; }

.placeholder-quote{
  border:1px dashed var(--line); border-radius:var(--radius); padding:26px;
  display:flex; flex-direction:column; gap:12px;
}
.placeholder-quote p{ font-family:var(--display); font-variation-settings:"SOFT" 0,"WONK" 0; font-style:italic; color:var(--paper-3); font-size:1.05rem; margin:0; }
.placeholder-quote .mono{ color:var(--paper-3); }

.ph{
  font-family:var(--mono); font-size:.82rem; color:var(--gold);
  background:var(--gold-dim); border:1px solid rgba(217,165,33,.32);
  border-radius:2px; padding:1px 6px; white-space:nowrap;
}

.callout{
  border:1px solid var(--line); border-left:2px solid var(--gold);
  background:var(--ink-2); border-radius:var(--radius); padding:24px 26px;
}
.callout--signal{ border-left-color:var(--signal); }
.callout h3{ font-size:1.05rem; margin-bottom:8px; }
.callout p{ font-size:.92rem; color:var(--paper-2); }

.toc{ list-style:none; margin:0; padding:0; }
.toc li{ display:grid; grid-template-columns:56px 1fr auto; gap:16px; align-items:baseline; padding:14px 0; border-bottom:1px solid var(--line-soft); font-size:.96rem; }
.toc i{ font-style:normal; font-family:var(--mono); font-size:.8rem; color:var(--gold); }
.toc span{ font-family:var(--mono); font-size:.75rem; color:var(--paper-3); }

/* ---------- Footer ------------------------------------------------------ */

.footer{ background:var(--ink-2); border-top:1px solid var(--line); padding-block:clamp(48px,6vw,76px) 34px; }
.footer__grid{ display:grid; grid-template-columns:minmax(0,1.6fr) repeat(2,minmax(0,1fr)); gap:clamp(24px,4vw,48px); }
@media (max-width:900px){ .footer__grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:560px){ .footer__grid{ grid-template-columns:1fr; } }
.footer h4{ font-family:var(--mono); font-size:.7rem; letter-spacing:.2em; text-transform:uppercase; color:var(--paper-3); margin-bottom:16px; font-weight:500; }
.footer ul{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:10px; }
.footer ul a{ color:var(--paper-2); font-size:.89rem; }
.footer ul a:hover{ color:var(--gold-lit); }
.footer__community a:hover{ color:var(--signal); }
.footer__blurb{ font-size:.9rem; color:var(--paper-2); max-width:44ch; }
.footer__bottom{
  margin-top:44px; padding-top:24px; border-top:1px solid var(--line);
  display:flex; flex-wrap:wrap; gap:14px 26px; justify-content:space-between;
  font-size:.78rem; color:var(--paper-3);
}
.footer__bottom a{ color:var(--paper-3); }
.footer__bottom a:hover{ color:var(--paper-2); }
.footer__disclaimer{ max-width:62ch; line-height:1.6; }

.newsletter{ display:flex; gap:10px; margin-top:6px; flex-wrap:wrap; }
.newsletter input{ flex:1; min-width:180px; }


/* ---------- 3D hardcover ------------------------------------------------ */

.book3d{
  --t: clamp(22px, 3.2vw, 44px);          /* block thickness */
  --tilt: -26deg;
  --r: 7px;                               /* fore-edge corner radius */
  position:relative; width:100%; max-width:420px; margin-inline:auto;
  perspective:1500px; perspective-origin:45% 38%;
}
.book3d__obj{
  position:relative; aspect-ratio:1512/2240; width:100%;
  transform-style:preserve-3d;
  transform:rotateY(var(--tilt));
  transition:transform 1.15s cubic-bezier(.25,.6,.2,1);
  animation:book-float 14s ease-in-out infinite;
}
.book3d:hover .book3d__obj{ transform:rotateY(-10deg); animation-play-state:paused; }

/* front board: the cover */
.book3d__front{
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover; display:block;
  border-radius:1px var(--r) var(--r) 1px;
  transform:translateZ(calc(var(--t) / 2));
  backface-visibility:hidden;
}
.book3d__gloss{
  position:absolute; inset:0; border-radius:1px var(--r) var(--r) 1px; pointer-events:none;
  transform:translateZ(calc(var(--t) / 2 + .5px));
  background:
    linear-gradient(100deg, rgba(255,255,255,0) 0%, rgba(255,255,255,.09) 38%, rgba(255,255,255,0) 52%),
    linear-gradient(90deg, rgba(0,0,0,.45) 0%, rgba(0,0,0,.16) 3.5%, rgba(0,0,0,0) 8%);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.06);
}
/* back board */
.book3d__back{
  position:absolute; inset:0; border-radius:1px var(--r) var(--r) 1px;
  background:linear-gradient(160deg,#101a2c,#0a1120);
  transform:translateZ(calc(var(--t) / -2)) rotateY(180deg);
  backface-visibility:hidden;
}
/* spine */
.book3d__spine{
  position:absolute; top:0; bottom:0; left:0; width:var(--t);
  transform-origin:left center;
  transform:translateZ(calc(var(--t) / -2)) rotateY(-90deg);
  background:linear-gradient(90deg,#0c1424 0%,#182540 50%,#0c1424 100%);
  display:flex; align-items:center; justify-content:center;
}
.book3d__spine span{
  writing-mode:vertical-rl; transform:rotate(180deg);
  font-family:var(--mono); font-size:clamp(.42rem,.75vw,.6rem); letter-spacing:.22em;
  text-transform:uppercase; color:var(--gold); white-space:nowrap; opacity:.9;
}
/* page block: fore-edge (right), head (top), tail (bottom) — all flush with the boards */
.book3d__pages,.book3d__head,.book3d__tail{
  position:absolute;
  background:
    linear-gradient(180deg, rgba(0,0,0,.10), rgba(0,0,0,0) 20%, rgba(0,0,0,0) 80%, rgba(0,0,0,.12)),
    repeating-linear-gradient(90deg,#ebe6da 0 1px,#d6cfbf 1px 2px,#f2eee5 2px 3px);
}
.book3d__pages{
  top:4px; bottom:4px; right:2px; width:var(--t);
  transform-origin:right center;
  transform:translateZ(calc(var(--t) / -2)) rotateY(90deg);
}
.book3d__head,.book3d__tail{
  left:3px; right:5px; height:var(--t);
  background:
    linear-gradient(90deg, rgba(0,0,0,.35), rgba(0,0,0,0) 12%),
    repeating-linear-gradient(0deg,#e6e1d5 0 1px,#d1cab9 1px 2px,#efebe2 2px 3px);
}
.book3d__head{ top:2px; transform-origin:center top; transform:translateZ(calc(var(--t) / -2)) rotateX(90deg); }
.book3d__tail{ bottom:2px; transform-origin:center bottom; transform:translateZ(calc(var(--t) / -2)) rotateX(-90deg); }

.book3d__shadow{
  position:absolute; left:4%; right:-6%; bottom:-6%; height:14%;
  background:radial-gradient(ellipse at 50% 50%, rgba(0,0,0,.65) 0%, rgba(0,0,0,.28) 45%, rgba(0,0,0,0) 72%);
  filter:blur(11px); transform:translateZ(-1px);
}
.book3d--sm{ max-width:220px; --t:clamp(14px,2vw,24px); --r:3px; }
@keyframes book-float{
  0%,100%{ transform:rotateY(var(--tilt)) translateY(0); }
  50%    { transform:rotateY(calc(var(--tilt) + 3.5deg)) translateY(-5px); }
}
@media (prefers-reduced-motion:reduce){
  .book3d__obj{ animation:none; }
}


/* ---------- Video sound toggle ---------------------------------------- */
.has-video{ position:relative; }
.has-video video{ display:block; width:100%; height:auto; }
.sound{
  position:absolute; right:12px; bottom:12px; z-index:2;
  font-family:var(--mono); font-size:.68rem; letter-spacing:.14em; text-transform:uppercase;
  color:var(--paper); background:rgba(7,10,18,.72); border:1px solid rgba(236,239,245,.28);
  border-radius:100px; padding:7px 12px 7px 28px; cursor:pointer; backdrop-filter:blur(6px);
  transition:border-color .2s ease, background .2s ease;
}
.sound::before{
  content:""; position:absolute; left:11px; top:50%; width:9px; height:9px; margin-top:-4.5px;
  border-radius:50%; background:var(--paper-3);
}
.sound[aria-pressed="true"]{ border-color:var(--gold); color:var(--gold); }
.sound[aria-pressed="true"]::before{ background:var(--gold); box-shadow:0 0 0 3px rgba(217,165,33,.25); }
.sound:hover{ border-color:var(--paper-2); background:rgba(7,10,18,.88); }
.has-video figcaption ~ .sound, .chapter__img .sound{ bottom:auto; top:12px; }
.sound--inline{ position:static; display:inline-flex; align-items:center; gap:8px; margin-top:18px; padding-left:12px; }
.sound--inline::before{ position:static; margin:0; }

/* ---------- Motion ------------------------------------------------------ */

.js .reveal{ opacity:0; transform:translateY(16px); transition:opacity .7s ease, transform .7s ease; }
.js .reveal[data-seen="true"]{ opacity:1; transform:none; }

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important; animation-iteration-count:1 !important;
    transition-duration:.001ms !important; scroll-behavior:auto !important;
  }
  .js .reveal{ opacity:1; transform:none; }
}

/* ---------- Print ------------------------------------------------------- */

@media print{
  .header,.footer,.announce,.hero__media,.btn{ display:none !important; }
  body{ background:#fff; color:#000; }
}


/* ---------- book trailer ------------------------------------------------ */
.trailer__title{ font-size:clamp(1.8rem,3.4vw,2.5rem); margin:6px 0 24px; }
.trailer__grid{ grid-template-columns:0.85fr 1.15fr; }
@media (max-width:860px){ .trailer__grid{ grid-template-columns:1fr; } }

.vplayer{
  position:relative; margin:0; aspect-ratio:16/9; overflow:hidden;
  border-radius:var(--radius); border:1px solid var(--line); background:#05080f;
  box-shadow:0 30px 70px -40px rgba(0,0,0,.9);
}
.vplayer img{ width:100%; height:100%; object-fit:cover; display:block; }
.vplayer video{ width:100%; height:100%; object-fit:contain; display:block; background:#05080f; }
.vplayer__scrim{
  position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(180deg, rgba(4,7,14,.28) 0%, rgba(4,7,14,.15) 45%, rgba(4,7,14,.62) 100%);
}
.vplayer__play{
  position:absolute; inset:0; z-index:2; display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:16px; background:none; border:0; cursor:pointer; color:var(--paper); font:inherit;
}
.vplayer__disc{
  width:74px; height:74px; border-radius:50%; display:grid; place-items:center; padding-left:3px;
  background:linear-gradient(135deg,#f6d27c,#d9a521); color:#171308;
  box-shadow:0 12px 34px rgba(0,0,0,.5); transition:transform .25s ease, box-shadow .35s ease;
}
.vplayer__play:hover .vplayer__disc,
.vplayer__play:focus-visible .vplayer__disc{ transform:scale(1.07); box-shadow:0 0 0 12px rgba(217,165,33,.10), 0 12px 34px rgba(0,0,0,.5); }
.vplayer__label{ font-family:var(--mono); font-size:.72rem; letter-spacing:.16em; text-transform:uppercase; color:var(--paper-2); }
.vplayer__label b{ color:var(--gold); font-weight:400; }
@media (max-width:600px){ .vplayer__disc{ width:60px; height:60px; } .vplayer__label{ font-size:.64rem; } }

/* the quiet play invitation in the hero */
.hero__play{
  display:inline-flex; align-items:center; gap:10px; margin-top:20px; text-decoration:none;
  font-family:var(--mono); font-size:.72rem; letter-spacing:.14em; text-transform:uppercase; color:var(--paper-2);
}
.hero__play span{
  width:26px; height:26px; border-radius:50%; display:grid; place-items:center; padding-left:2px;
  border:1px solid rgba(240,194,74,.45); color:var(--gold); transition:background .2s ease, border-color .2s ease;
}
.hero__play b{ color:var(--gold); font-weight:400; }
.hero__play:hover{ color:var(--paper); }
.hero__play:hover span{ background:rgba(240,194,74,.12); border-color:rgba(240,194,74,.8); }


/* ---------- the hardcover opens onto a printed spread ------------------- */
.bookfilm{ position:fixed; inset:0; z-index:200; }
.bookfilm[hidden]{ display:none; }
.bookfilm__scrim{
  position:absolute; inset:0; border:0; padding:0; cursor:pointer;
  background:rgba(2,4,9,.94); backdrop-filter:blur(8px);
  opacity:0; transition:opacity .55s ease;
}
.bookfilm.is-open .bookfilm__scrim{ opacity:1; }
.bookfilm__stage{
  position:absolute; inset:0; display:grid; place-items:center; pointer-events:none;
}

/* the open book is a spread: the closed cover sits over its right-hand page */
/* the wrapper that travels carries a plain 2D transform only - putting the camera here makes the
   browser stop reporting its geometry, which the hand-over measurement depends on */
.bookfilm__flip{ grid-area:1/1; pointer-events:auto; will-change:transform; }
.bookfilm__camera{
  perspective:1500px; perspective-origin:97.5% 38%;      /* the hero's camera, over the closed cover */
  transition:perspective-origin 1.1s cubic-bezier(.32,.02,.15,1);
}
.bookfilm.is-open .bookfilm__camera{ perspective-origin:50% 42%; }   /* re-centres over the open spread */
.bookfilm__book{
  --t:55px;                                        /* thickness that projects like the hero's fore-edge */
  --th:8px;                                        /* and like its top and bottom edges (26px / 42px projected) */
  position:relative; height:min(74vh, 640px); aspect-ratio:27/20;
  transform-style:preserve-3d; transform:translateX(25%) rotateY(var(--tilt0, -23deg));
  transition:transform 1.05s cubic-bezier(.32,.02,.15,1), opacity .5s ease;
}
.bookfilm.is-open .bookfilm__book{ transform:translateX(0) rotateY(0deg); }
.bookfilm.is-reading .bookfilm__book{ opacity:0; transition:opacity .5s ease .1s; }

/* paper: cream stock, a serif face set very small, a running head and a folio */
.bookfilm__page,.bookfilm__back{
  color:#4a453c; overflow:hidden;
  padding:7% 8.5% 6%;
  font-family:var(--display), Georgia, serif;
  font-size:max(3px, .80vh); line-height:1.68; text-align:justify; hyphens:auto;
}
.bookfilm__page p,.bookfilm__back p{ margin:0 0 .9em; text-indent:1.4em; }
.bookfilm__page p:first-of-type,.bookfilm__back p:first-of-type{ text-indent:0; }
.bookfilm__head{
  display:block; margin-bottom:2.2em; text-align:center;
  font-family:var(--mono); font-size:.72em; letter-spacing:.34em; text-transform:uppercase; color:#9a9184;
}
.bookfilm__folio{
  position:absolute; left:0; right:0; bottom:3.5%; text-align:center;
  font-family:var(--mono); font-size:.72em; color:#a49b8d;
}
.bookfilm__page--r{
  position:absolute; top:0; right:0; width:50%; height:100%;
  transform-origin:left center;
  transform:translateZ(calc(var(--t) / -2 + 1px));
  border-radius:1px 11px 11px 1px;
  background:
    linear-gradient(270deg, rgba(72,58,34,0) 56%, rgba(72,58,34,.07) 78%, rgba(58,45,26,.26) 93%, rgba(42,32,18,.42) 100%),
    linear-gradient(184deg, rgba(90,74,44,.10) 0%, rgba(90,74,44,0) 7%, rgba(90,74,44,0) 93%, rgba(90,74,44,.12) 100%),
    linear-gradient(174deg,#ffffff 0%,#fcfaf5 46%,#f6f1e6 100%);
  box-shadow:
    3px 1px 0 -0.5px #f6f2e8, 6px 2px 0 -1px #eee9dc, 9px 3px 0 -1.5px #e4ddcc,
    12px 4px 0 -2px #d8d0bb, 15px 6px 0 -2.5px #cbc2aa,               /* leaves, fanning outward */
    18px 8px 0 -3px #241b12,                                          /* the board beneath them */
    0 44px 64px -18px rgba(0,0,0,.8);
}
.bookfilm.is-open .bookfilm__page--r{
  transform:translateZ(calc(var(--t) / -2 + 1px)) rotateY(-6deg);
}
.bookfilm__page--r::after,
.bookfilm__back::after{                         /* the fore-edge: leaves seen end-on */
  content:''; position:absolute; top:9px; bottom:9px; width:15px;
  background:
    linear-gradient(180deg, rgba(96,80,52,.34), rgba(96,80,52,0) 16%, rgba(96,80,52,0) 84%, rgba(96,80,52,.38)),
    repeating-linear-gradient(0deg, #ffffff 0 1px, rgba(150,138,116,.5) 1px 2px);
  box-shadow:0 14px 26px -8px rgba(0,0,0,.5);
}
.bookfilm__page--r::after{ right:-13px; border-radius:0 5px 5px 0; }
.bookfilm__back::after{ left:-13px; border-radius:5px 0 0 5px; }
.bookfilm__block{                               /* the fore-edge of a closed hardcover */
  position:absolute; top:1.1%; bottom:1.1%; right:0; width:var(--t);
  border-radius:2px;
  transform-origin:right center; transform:translateZ(calc(var(--t) / -2)) rotateY(90deg);
  background:
    linear-gradient(180deg, rgba(0,0,0,.14), rgba(0,0,0,0) 18%, rgba(0,0,0,0) 82%, rgba(0,0,0,.16)),
    repeating-linear-gradient(90deg,#ece7db 0 1px,#d5cebe 1px 2px,#f3efe6 2px 3px);
  transition:opacity .3s ease;
}
.bookfilm.is-open .bookfilm__block{ opacity:0; }

.bookfilm__head,.bookfilm__tail{                /* the page edges along the top and bottom */
  position:absolute; left:calc(50% + 2px); right:9px; height:var(--th);
  border-radius:0 3px 3px 0;
  background:
    linear-gradient(90deg, rgba(0,0,0,.35), rgba(0,0,0,0) 12%),
    repeating-linear-gradient(0deg,#e8e3d7 0 1px,#d3ccbb 1px 2px,#f1ede4 2px 3px);
  transition:opacity .3s ease;
}
.bookfilm__head{ top:0; transform-origin:center top; transform:translateZ(calc(var(--th) / -2)) rotateX(90deg); }
.bookfilm__tail{ bottom:0; transform-origin:center bottom; transform:translateZ(calc(var(--th) / -2)) rotateX(-90deg); }
.bookfilm__spine{                               /* the spine, as on the hero copy */
  position:absolute; top:0; bottom:0; left:50%; width:var(--t);
  transform-origin:left center; transform:translateZ(calc(var(--t) / -2)) rotateY(-90deg);
  background:linear-gradient(90deg,#0c1424 0%,#182540 50%,#0c1424 100%);
  transition:opacity .3s ease;
}
.bookfilm__groundshadow{                        /* the same pool of shadow the hero book sits in */
  position:absolute; left:54%; right:-4%; bottom:-6%; height:14%;
  background:radial-gradient(ellipse at 50% 50%, rgba(0,0,0,.8) 0%, rgba(0,0,0,.35) 45%, rgba(0,0,0,0) 72%);
  filter:blur(7px); transform:translateZ(-1px); transition:opacity .45s ease;
}
.bookfilm.is-open .bookfilm__head,
.bookfilm.is-open .bookfilm__tail,
.bookfilm.is-open .bookfilm__spine,
.bookfilm.is-open .bookfilm__groundshadow{ opacity:0; }
.bookfilm__gutter{                              /* the crease itself: a hairline where the leaves meet */
  position:absolute; top:2%; bottom:2%; left:50%; width:3px;
  transform:translateX(-50%) translateZ(calc(var(--t) / -2 + 3px));
  background:linear-gradient(180deg, rgba(30,22,12,.15), rgba(30,22,12,.5) 12%, rgba(30,22,12,.5) 88%, rgba(30,22,12,.15));
  pointer-events:none;
}

/* the front board, hinged at the spine; its back face is the left-hand page */
.bookfilm__leaf{
  position:absolute; top:0; right:0; width:50%; height:100%; z-index:3;
  transform-origin:left center; transform-style:preserve-3d;
  transform:translateZ(calc(var(--t) / 2)) rotateY(0deg);
  transition:transform 1.25s cubic-bezier(.5,.02,.18,1) .42s;
}
.bookfilm.is-open .bookfilm__leaf{ transform:translateZ(calc(var(--t) / -2 + 1px)) rotateY(-174deg); }
.bookfilm__front,.bookfilm__gloss{ position:absolute; inset:0; backface-visibility:hidden; border-radius:2px 8px 8px 2px; }
.bookfilm__front{ width:100%; height:100%; object-fit:cover; background:#0e1626; }  /* opaque before the cover paints */
.bookfilm__gloss{
  background:linear-gradient(100deg, rgba(255,255,255,0) 0%, rgba(255,255,255,.10) 38%, rgba(255,255,255,0) 55%),
             linear-gradient(90deg, rgba(0,0,0,.5) 0%, rgba(0,0,0,.15) 4%, rgba(0,0,0,0) 9%);
}
.bookfilm__back{
  position:absolute; inset:0; backface-visibility:hidden;
  transform:rotateY(180deg); border-radius:11px 1px 1px 11px;
  background:
    linear-gradient(90deg, rgba(72,58,34,0) 56%, rgba(72,58,34,.07) 78%, rgba(58,45,26,.26) 93%, rgba(42,32,18,.42) 100%),
    linear-gradient(184deg, rgba(90,74,44,.10) 0%, rgba(90,74,44,0) 7%, rgba(90,74,44,0) 93%, rgba(90,74,44,.12) 100%),
    linear-gradient(174deg,#ffffff 0%,#fcfaf5 46%,#f6f1e6 100%);
  box-shadow:
    -3px 1px 0 -0.5px #f6f2e8, -6px 2px 0 -1px #eee9dc, -9px 3px 0 -1.5px #e4ddcc,
    -12px 4px 0 -2px #d8d0bb, -15px 6px 0 -2.5px #cbc2aa,
    -18px 8px 0 -3px #241b12,
    0 44px 64px -18px rgba(0,0,0,.8);
}

/* the film lifts off the spread and takes the screen */
.bookfilm__screen{
  grid-area:1/1; position:relative; pointer-events:auto;
  width:min(94vw, calc((100vh - 96px) * 16 / 9)); aspect-ratio:16/9;
  border-radius:5px; overflow:hidden; background:#04070e;
  box-shadow:0 44px 110px rgba(0,0,0,.85), 0 0 0 1px rgba(240,194,74,.2);
  opacity:0; transform:scale(var(--from,.5));
  transition:transform 1s cubic-bezier(.26,.02,.12,1), opacity .5s ease;
}
.bookfilm.is-reading .bookfilm__screen{ opacity:1; transform:scale(1); }
.bookfilm__video{ width:100%; height:100%; display:block; object-fit:contain; background:#04070e; }

.bookfilm__close{
  position:absolute; top:22px; right:24px; width:42px; height:42px; border-radius:50%; pointer-events:auto;
  display:grid; place-items:center; cursor:pointer; color:var(--paper-2);
  background:rgba(255,255,255,.06); border:1px solid rgba(255,255,255,.14);
  opacity:0; transition:opacity .4s ease .6s, color .2s ease, background .2s ease;
}
.bookfilm.is-open .bookfilm__close{ opacity:1; }
.bookfilm__close:hover{ color:var(--paper); background:rgba(255,255,255,.12); }

/* shutting the book is quicker than opening it, and carries no delays */
.bookfilm.is-closing .bookfilm__camera{ transition:perspective-origin .7s cubic-bezier(.32,.02,.15,1); }
/* the last frame before the hand-over is snapped to the exact pose, so nothing is caught mid-ease */
.bookfilm.is-settled .bookfilm__book,
.bookfilm.is-settled .bookfilm__leaf,
.bookfilm.is-settled .bookfilm__camera,
.bookfilm.is-settled .bookfilm__head,
.bookfilm.is-settled .bookfilm__tail,
.bookfilm.is-settled .bookfilm__spine,
.bookfilm.is-settled .bookfilm__block,
.bookfilm.is-settled .bookfilm__groundshadow{ transition:none !important; }
.bookfilm.is-closing .bookfilm__leaf{ transition:transform .8s cubic-bezier(.42,.02,.2,1); }
.bookfilm.is-closing .bookfilm__book{ transition:transform .8s cubic-bezier(.32,.02,.15,1), opacity .3s ease; }
.bookfilm.is-closing .bookfilm__screen{ transition:transform .62s cubic-bezier(.4,.02,.2,1), opacity .34s ease; }

/* the hero copy hands over: out instantly (one book on screen, never two), back in gently */
/* a hard swap in both directions: the two books are the same size in the same place, so any
   fade shows as a blink where neither is fully there */
.hero__play{ transition:opacity .32s ease; }
body.is-filming .hero__play{ opacity:0; pointer-events:none; }

/* small screens and reduced motion: skip the theatre, just play the film */
.bookfilm.is-plain .bookfilm__flip{ display:none; }
.bookfilm.is-plain .bookfilm__screen{ opacity:1; transform:none; transition:none; }