/* ============================================================
   AESTHETIC PROTOCOL — styles.css
   Dark tactical "operator's manual" theme.
   Accent tunes per book: cyan / crimson / gold.
   ============================================================ */

:root{
  --void:#07090d;
  --carbon:#0d1117;
  --panel:#11161d;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --marble:#ecebe6;
  --text:#c7ccd4;
  --ash:#7d838e;
  --faint:#565c66;

  /* global accent — JS shifts this as you scroll */
  --accent:#43d4d8;
  --accent-soft:rgba(67,212,216,.14);

  --maxw:1180px;
  --ease:cubic-bezier(.2,.7,.2,1);

  --f-display:"Anton",system-ui,sans-serif;
  --f-body:"Inter",system-ui,sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  background:var(--void);
  color:var(--text);
  font-family:var(--f-body);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  position:relative;
  -webkit-tap-highlight-color:transparent;
}
/* subtle film-grain + vignette over everything */
body::before{
  content:"";position:fixed;inset:0;z-index:1;pointer-events:none;
  background:radial-gradient(120% 90% at 50% -10%, transparent 55%, rgba(0,0,0,.55) 100%);
}

img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
s{text-decoration:line-through}

/* ---------- Shared atoms ---------- */
.eyebrow{
  font-family:var(--f-mono);
  font-size:.7rem;letter-spacing:.32em;text-transform:uppercase;
  color:var(--accent);
  display:flex;align-items:center;gap:.7em;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--accent);display:inline-block}
.eyebrow--center{justify-content:center;color:var(--ash)}
.eyebrow--center::before,.eyebrow--center::after{content:"";width:26px;height:1px;background:var(--line-strong)}
.eyebrow--muted{color:var(--faint)}
.eyebrow--muted::before{background:var(--faint)}
.eyebrow--hero{color:var(--ash);justify-content:center}
.eyebrow--hero::before{background:var(--line-strong)}
.eyebrow__est{font-size:.62rem;color:var(--faint);letter-spacing:.3em;margin-left:.3em}

.btn{
  display:inline-flex;align-items:center;gap:.55em;
  font-family:var(--f-mono);font-size:.82rem;font-weight:500;
  letter-spacing:.08em;text-transform:uppercase;
  padding:.95em 1.5em;border:1px solid var(--line-strong);
  border-radius:2px;cursor:pointer;transition:.3s var(--ease);
  color:var(--marble);background:transparent;white-space:nowrap;
}
.btn s{opacity:.5;font-weight:400}
.btn--solid{background:var(--marble);color:#0a0c10;border-color:var(--marble);font-weight:700}
.btn--solid:hover{background:#fff;transform:translateY(-2px)}
.btn--accent{background:var(--accent);border-color:var(--accent);color:#06090c;box-shadow:0 0 0 0 var(--accent-soft)}
.btn--accent:hover{box-shadow:0 14px 40px -12px var(--accent);transform:translateY(-2px)}
.btn--ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn--xl{font-size:1rem;padding:1.15em 2.4em}
.btn--nav{padding:.6em 1.1em;font-size:.72rem}
.btn--nav span{color:var(--accent)}
.btn--solid.btn--nav{color:#0a0c10}
.btn--solid.btn--nav span{color:#0a0c10}

/* ============================================================
   FIXED HUD FRAME
   ============================================================ */
.hud{position:fixed;inset:0;z-index:40;pointer-events:none}
.hud__bracket{position:absolute;width:34px;height:34px;border:solid var(--accent);opacity:.5;transition:border-color .6s var(--ease)}
.hud__bracket--tl{top:18px;left:18px;border-width:1px 0 0 1px}
.hud__bracket--tr{top:18px;right:18px;border-width:1px 1px 0 0}
.hud__bracket--bl{bottom:18px;left:18px;border-width:0 0 1px 1px}
.hud__bracket--br{bottom:18px;right:18px;border-width:0 1px 1px 0}

.hud__rail{
  position:absolute;right:24px;top:50%;transform:translateY(-50%);
  display:flex;flex-direction:column;gap:14px;align-items:flex-end;
}
.hud__rail-label{
  font-family:var(--f-mono);font-size:.6rem;letter-spacing:.18em;
  color:var(--faint);transition:.4s var(--ease);
  display:flex;align-items:center;gap:8px;
}
.hud__rail-label::after{content:"";width:6px;height:6px;border:1px solid var(--faint);border-radius:50%;transition:.4s var(--ease)}
.hud__rail-label.is-active{color:var(--accent)}
.hud__rail-label.is-active::after{background:var(--accent);border-color:var(--accent);box-shadow:0 0 10px var(--accent)}

.hud__coords{
  position:absolute;left:30px;bottom:24px;
  font-family:var(--f-mono);font-size:.6rem;letter-spacing:.16em;color:var(--faint);
}

/* ============================================================
   NAV
   ============================================================ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px clamp(24px,5vw,72px);
  transition:.4s var(--ease);
}
.nav.is-stuck{
  background:rgba(8,10,14,.82);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);padding-top:14px;padding-bottom:14px;
}
.brand{display:flex;align-items:center;gap:11px}
.brand__mark{width:30px;height:30px;fill:var(--accent);transition:fill .6s var(--ease);filter:drop-shadow(0 0 8px var(--accent-soft))}
.brand__type{font-family:var(--f-mono);font-weight:700;font-size:.82rem;letter-spacing:.18em;color:var(--marble);line-height:1}
.brand__type em{font-style:normal;color:var(--ash);font-weight:400;margin-left:.35em}

.nav__links{display:flex;gap:30px}
.nav__links a{
  font-family:var(--f-mono);font-size:.74rem;letter-spacing:.12em;
  text-transform:uppercase;color:var(--ash);position:relative;padding:4px 0;transition:color .3s;
}
.nav__links a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;background:var(--accent);transition:width .3s var(--ease)}
.nav__links a:hover{color:var(--marble)}
.nav__links a:hover::after{width:100%}

.nav__burger{display:none;flex-direction:column;align-items:center;justify-content:center;gap:5px;background:none;border:0;cursor:pointer;padding:8px;min-width:44px;min-height:44px}
.nav__burger span{width:24px;height:2px;background:var(--marble);transition:transform .3s var(--ease),opacity .3s}
.nav.is-open .nav__burger span:nth-child(1){transform:translateY(3.5px) rotate(45deg)}
.nav.is-open .nav__burger span:nth-child(2){transform:translateY(-3.5px) rotate(-45deg)}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  position:relative;min-height:100vh;min-height:100svh;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:140px clamp(24px,5vw,72px) 90px;
  overflow:hidden;
}
.hero__grid{
  position:absolute;inset:0;z-index:0;opacity:.5;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(80% 60% at 50% 40%,#000 30%,transparent 75%);
  -webkit-mask-image:radial-gradient(80% 60% at 50% 40%,#000 30%,transparent 75%);
}
.hero__glow{
  position:absolute;left:50%;top:-10%;width:80vw;height:70vh;transform:translateX(-50%);z-index:0;
  background:radial-gradient(50% 50% at 50% 50%,var(--accent-soft),transparent 70%);
  filter:blur(20px);
}
.hero__inner{position:relative;z-index:2;max-width:900px;width:100%}

.hero__title{
  font-family:var(--f-display);font-weight:400;
  font-size:clamp(3.2rem,11vw,9rem);line-height:.92;letter-spacing:.01em;
  color:var(--marble);text-transform:uppercase;margin:.35em 0;
  text-shadow:0 0 60px rgba(0,0,0,.6);
}
.hero__line{display:block}
.hero__line--accent{
  -webkit-text-stroke:0;
  color:var(--accent);
  background:linear-gradient(150deg,#b4f4f6 0%,#43d4d8 50%,#15a8ae 100%);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
  filter:drop-shadow(0 0 34px var(--accent-soft));
}
.hero__sub{
  max-width:620px;margin:1.4em auto 0;color:var(--text);font-size:1.06rem;
}
.hero__cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:2.2em}
.hero__stats{
  list-style:none;display:flex;gap:clamp(20px,5vw,64px);justify-content:center;flex-wrap:wrap;
  margin-top:3.4em;padding-top:2em;border-top:1px solid var(--line);max-width:760px;margin-left:auto;margin-right:auto;
}
.hero__stats li{display:flex;flex-direction:column;gap:.3em}
.hero__stats strong{font-family:var(--f-display);font-size:2.2rem;color:var(--marble);line-height:1}
.hero__stats span{font-family:var(--f-mono);font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ash)}

.hero__scroll{
  position:absolute;bottom:32px;left:50%;transform:translateX(-50%);z-index:2;
  font-family:var(--f-mono);font-size:.6rem;letter-spacing:.3em;color:var(--ash);
  display:flex;flex-direction:column;align-items:center;gap:10px;
}
.hero__scroll span{width:1px;height:42px;background:linear-gradient(var(--accent),transparent);animation:scrollLine 2.2s var(--ease) infinite}
@keyframes scrollLine{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ============================================================
   MARQUEE
   ============================================================ */
.marquee{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:18px 0;overflow:hidden;background:var(--carbon);position:relative;z-index:2;
}
.marquee__track{
  display:flex;align-items:center;gap:0;width:max-content;
  animation:marquee 38s linear infinite;
  font-family:var(--f-display);font-size:1.5rem;letter-spacing:.04em;color:var(--marble);text-transform:uppercase;
}
.marquee__track span{padding:0 .5em;opacity:.85}
.marquee__track i{font-style:normal;color:var(--accent);font-family:var(--f-body);font-weight:300;opacity:.7}
@keyframes marquee{to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.marquee__track{animation:none}}

/* ============================================================
   BOOKS
   ============================================================ */
.books{max-width:var(--maxw);margin:0 auto;padding:clamp(70px,9vw,130px) clamp(24px,5vw,48px)}
.book{
  position:relative;display:grid;grid-template-columns:0.85fr 1fr;gap:clamp(30px,5vw,70px);
  align-items:center;padding:clamp(40px,6vw,80px) 0;
}
.book + .book{border-top:1px solid var(--line)}
.book--reverse .book__media{order:2}
.book__index{
  position:absolute;top:clamp(20px,5vw,52px);right:0;
  font-family:var(--f-display);font-size:clamp(3rem,9vw,7rem);line-height:1;
  color:transparent;-webkit-text-stroke:1px var(--line-strong);z-index:0;pointer-events:none;
}

/* --- media / cover --- */
.book__media{position:relative;z-index:1}
/* minimal: each cover fades + lifts in as it scrolls into view, and fades back out as it leaves (JS toggles .is-inview) */
.js .book__media{opacity:0;transform:translateY(40px);transition:opacity .85s var(--ease),transform .85s var(--ease)}
.book__media.is-inview{opacity:1;transform:none}
.cover{
  position:relative;border-radius:4px;overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:0 40px 90px -40px rgba(0,0,0,.9), 0 0 0 1px rgba(255,255,255,.02);
  transition:transform .5s var(--ease),box-shadow .5s var(--ease);
  background:var(--carbon);
}
.book:hover .cover{transform:translateY(-6px);box-shadow:0 50px 120px -40px var(--accent-soft),0 30px 70px -40px rgba(0,0,0,.9)}
.cover__photo{position:relative;display:block;width:100%;height:auto;z-index:3}
/* fade each (lazy) cover image in once it has loaded */
.cover__photo.js-fade{opacity:0;transition:opacity .55s var(--ease)}
.cover__photo.js-fade.is-loaded{opacity:1}
/* ambient: a soft light sheen drifts across each cover every few seconds (paused off-screen for battery) */
.cover::after{
  content:"";position:absolute;top:0;left:0;width:38%;height:100%;z-index:4;pointer-events:none;
  background:linear-gradient(105deg,transparent 0%,rgba(255,255,255,.16) 50%,transparent 100%);
  transform:translateX(-180%) skewX(-12deg);mix-blend-mode:screen;
  animation:coverSheen 7s ease-in-out infinite;animation-play-state:paused;
}
.book__media.is-inview .cover::after{animation-play-state:running}
#book-2 .cover::after{animation-delay:-2.3s}
#book-3 .cover::after{animation-delay:-4.6s}
@keyframes coverSheen{0%{transform:translateX(-180%) skewX(-12deg)}14%,100%{transform:translateX(330%) skewX(-12deg)}}
/* touch feedback: press-in glow while held + a light sweep on tap (mobile) */
.cover__sweep{
  position:absolute;top:0;left:0;width:45%;height:100%;z-index:6;pointer-events:none;
  background:linear-gradient(105deg,transparent 0%,rgba(255,255,255,.32) 50%,transparent 100%);
  transform:translateX(-160%) skewX(-12deg);opacity:0;mix-blend-mode:screen;
}
.cover__sweep.play{animation:coverSweep .6s var(--ease)}
@keyframes coverSweep{0%{transform:translateX(-160%) skewX(-12deg);opacity:0}15%{opacity:1}100%{transform:translateX(360%) skewX(-12deg);opacity:0}}
.cover.is-pressed{transition:transform .16s ease,box-shadow .16s ease;transform:scale(.975);box-shadow:0 26px 70px -30px var(--accent-soft),0 0 0 1px var(--accent),0 30px 70px -40px rgba(0,0,0,.9)}
@media (prefers-reduced-motion:reduce){
  .js .book__media{opacity:1;transform:none;transition:none}
  .cover__photo.js-fade{opacity:1;transition:none}
  .cover__sweep,.cover::after{display:none}
  .cover.is-pressed{transform:none}
}

/* CSS-built fallback cover art (shown when no photo present) */
.cover__art{
  position:absolute;inset:0;z-index:1;padding:7% 8%;
  display:flex;flex-direction:column;
  background:
    radial-gradient(120% 80% at 50% -20%, var(--accent-soft), transparent 55%),
    radial-gradient(90% 60% at 50% 120%, rgba(0,0,0,.6), transparent 60%),
    linear-gradient(160deg,#0c1117,#05070a);
}
.cover__art::after{ /* corner brackets inside cover */
  content:"";position:absolute;inset:14px;border:1px solid var(--accent);opacity:.22;
  clip-path:polygon(0 0,22px 0,22px 1px,1px 1px,1px 22px,0 22px,0 0, 100% 0,100% 22px,calc(100% - 1px) 22px,calc(100% - 1px) 1px,calc(100% - 22px) 1px,calc(100% - 22px) 0, 100% 100%,calc(100% - 22px) 100%,calc(100% - 22px) calc(100% - 1px),calc(100% - 1px) calc(100% - 1px),calc(100% - 1px) calc(100% - 22px),100% calc(100% - 22px), 0 100%,0 calc(100% - 22px),1px calc(100% - 22px),1px calc(100% - 1px),22px calc(100% - 1px),22px 100%);
}
.cover__top{display:flex;align-items:center;justify-content:space-between;gap:8px;position:relative;z-index:2}
.cover__mono{font-family:var(--f-mono);font-weight:700;font-size:.8rem;letter-spacing:.05em;color:var(--accent)}
.cover__tag{font-family:var(--f-mono);font-size:.42rem;letter-spacing:.18em;color:var(--ash);text-align:right}
.cover__bust{
  position:absolute;left:50%;top:48%;transform:translate(-50%,-50%);
  width:62%;height:auto;z-index:1;
  fill:var(--accent);opacity:.16;
  filter:drop-shadow(0 0 30px var(--accent-soft));
}
.cover__title{
  position:relative;z-index:2;margin-top:auto;
  font-family:var(--f-display);text-transform:uppercase;color:var(--marble);
  line-height:.92;font-size:clamp(1.3rem,3.4vw,2.1rem);
}
.cover__title em{display:block;font-style:normal;font-family:var(--f-mono);font-weight:700;font-size:.5em;letter-spacing:.3em;color:var(--ash);margin-bottom:.3em}
.cover__title b{display:block;color:var(--accent);-webkit-text-stroke:0;font-weight:400}
.cover__band{
  position:relative;z-index:2;margin-top:10px;padding:7px 0;
  border-top:1px solid var(--accent);border-bottom:1px solid var(--accent);
  font-family:var(--f-mono);font-size:.46rem;letter-spacing:.22em;color:var(--accent);
  background:var(--accent-soft);text-align:center;
}
.cover__foot{position:relative;z-index:2;margin-top:9px;font-family:var(--f-mono);font-size:.46rem;letter-spacing:.2em;color:var(--ash);text-align:center}

/* --- body / copy --- */
.book__body{position:relative;z-index:2}
.book__title{
  font-family:var(--f-display);font-weight:400;text-transform:uppercase;
  font-size:clamp(2.4rem,5.5vw,4rem);line-height:.95;color:var(--marble);margin:.25em 0 .35em;
}
.book__quote{font-family:var(--f-mono);font-size:.95rem;color:var(--accent);margin-bottom:1.1em;letter-spacing:.02em}
.book__desc{max-width:46ch;color:var(--text)}
.pillars{list-style:none;margin:1.6em 0;display:grid;gap:0}
.pillars li{
  position:relative;padding:.7em 0 .7em 1.6em;border-top:1px solid var(--line);
  font-size:.92rem;color:var(--text);
}
.pillars li:last-child{border-bottom:1px solid var(--line)}
.pillars li::before{content:"";position:absolute;left:0;top:1.25em;width:7px;height:7px;background:var(--accent);transform:rotate(45deg)}
.book__buy{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:1.8em}
.price{font-family:var(--f-display);font-size:1.9rem;color:var(--marble);display:flex;align-items:baseline;gap:.3em}
.price s{font-size:.55em;color:var(--faint);font-family:var(--f-mono)}
.price__note{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.1em;color:var(--ash);text-transform:uppercase}

/* ============================================================
   BUNDLE
   ============================================================ */
.bundle{
  position:relative;text-align:center;overflow:hidden;
  padding:clamp(80px,11vw,150px) clamp(24px,5vw,48px);
  background:
    linear-gradient(180deg,transparent,rgba(0,0,0,.4)),
    radial-gradient(70% 50% at 50% 0%, rgba(67,212,216,.06), transparent 60%);
  border-top:1px solid var(--line);
}
.bundle__glow{
  position:absolute;left:50%;top:20%;transform:translateX(-50%);width:60vw;height:60vh;z-index:0;
  background:conic-gradient(from 0deg, rgba(67,212,216,.10), rgba(224,32,46,.10), rgba(216,169,63,.12), rgba(67,212,216,.10));
  filter:blur(80px);opacity:.7;border-radius:50%;
}
.bundle__title{
  position:relative;z-index:2;font-family:var(--f-display);font-weight:400;text-transform:uppercase;
  font-size:clamp(2.6rem,7vw,5.4rem);line-height:.94;color:var(--marble);margin:.3em 0;
}
.bundle__sub{position:relative;z-index:2;max-width:560px;margin:0 auto;color:var(--text)}

.bundle__card{
  position:relative;z-index:2;max-width:760px;margin:3em auto 0;
  border:1px solid var(--line-strong);border-radius:6px;overflow:hidden;
  background:linear-gradient(180deg,rgba(20,26,34,.9),rgba(10,13,18,.95));
  backdrop-filter:blur(10px);
  box-shadow:0 50px 120px -50px rgba(0,0,0,.9);
}
.bundle__stack{display:flex;gap:10px;justify-content:center;padding:22px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.bundle__chip{
  font-family:var(--f-mono);font-size:.64rem;letter-spacing:.18em;color:var(--c);
  border:1px solid var(--c);border-radius:2px;padding:.5em .9em;
  background:color-mix(in srgb,var(--c) 12%,transparent);
}
.bundle__deal{padding:clamp(28px,5vw,46px)}
.bundle__label{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.22em;color:var(--ash);text-transform:uppercase;margin-bottom:18px}
.bundle__price{display:flex;align-items:baseline;justify-content:center;gap:16px;flex-wrap:wrap}
.bundle__now{font-family:var(--f-display);font-size:clamp(3.4rem,9vw,5.5rem);color:var(--marble);line-height:1}
.bundle__was{font-family:var(--f-mono);font-size:1.3rem;color:var(--faint);text-decoration:line-through}
.bundle__save{
  font-family:var(--f-mono);font-size:.66rem;letter-spacing:.12em;
  color:#06090c;background:var(--accent);padding:.55em .85em;border-radius:2px;align-self:center;
}
.bundle__list{list-style:none;max-width:420px;margin:26px auto;text-align:left;display:grid;gap:0}
.bundle__list li{position:relative;padding:.7em 0 .7em 1.9em;border-top:1px solid var(--line);font-size:.92rem}
.bundle__list li:last-child{border-bottom:1px solid var(--line)}
.bundle__list li::before{content:"✓";position:absolute;left:0;top:.7em;color:var(--accent);font-family:var(--f-mono);font-size:.85em}
.bundle__deadline{margin-top:16px;font-family:var(--f-mono);font-size:.74rem;letter-spacing:.08em;color:var(--ash)}

/* ============================================================
   INSIDE / SPECS
   ============================================================ */
.inside{max-width:var(--maxw);margin:0 auto;padding:clamp(70px,9vw,120px) clamp(24px,5vw,48px);text-align:center}
.inside__title{font-family:var(--f-display);font-weight:400;text-transform:uppercase;font-size:clamp(2rem,5vw,3.4rem);line-height:.98;color:var(--marble);margin:.4em auto 1.6em;max-width:18ch}
.inside__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:left}
.spec{padding:26px 22px;border:1px solid var(--line);border-radius:4px;background:var(--carbon);transition:.4s var(--ease)}
.spec:hover{border-color:var(--accent);transform:translateY(-6px);background:var(--panel)}
.spec__no{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.18em;color:var(--accent)}
.spec h3{font-family:var(--f-body);font-weight:700;font-size:1.05rem;color:var(--marble);margin:.8em 0 .4em}
.spec p{font-size:.88rem;color:var(--ash)}

/* ============================================================
   AUDIENCE
   ============================================================ */
.audience{
  max-width:var(--maxw);margin:0 auto;padding:0 clamp(24px,5vw,48px) clamp(50px,7vw,90px);
  display:grid;grid-template-columns:1fr 1fr;gap:20px;
}
.audience__col{padding:34px;border:1px solid var(--line);border-radius:4px;background:var(--carbon)}
.audience__col--yes{border-left:2px solid var(--accent)}
.audience__col--no{border-left:2px solid var(--faint);opacity:.78}
.audience__col ul{list-style:none;margin-top:1.4em;display:grid;gap:.9em}
.audience__col li{position:relative;padding-left:1.7em;font-size:.95rem}
.audience__col--yes li::before{content:"+";position:absolute;left:0;color:var(--accent);font-family:var(--f-mono);font-weight:700}
.audience__col--no li::before{content:"–";position:absolute;left:0;color:var(--faint);font-family:var(--f-mono);font-weight:700}

/* ============================================================
   CONTENTS PREVIEW (real chapter names per book)
   ============================================================ */
.contents{max-width:var(--maxw);margin:0 auto;padding:clamp(50px,7vw,90px) clamp(24px,5vw,48px);text-align:center}
.contents__title{font-family:var(--f-display);font-weight:400;text-transform:uppercase;font-size:clamp(2rem,5vw,3.4rem);line-height:.98;color:var(--marble);margin:.4em 0 .3em}
.contents__sub{color:var(--ash);max-width:48ch;margin:0 auto}
.contents__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:2.6em;text-align:left}
.toc{padding:28px 24px 22px;border:1px solid var(--line);border-top:2px solid var(--c);border-radius:4px;background:var(--carbon);transition:.4s var(--ease)}
.toc:hover{border-color:color-mix(in srgb,var(--c) 45%,transparent);border-top-color:var(--c);background:var(--panel)}
.toc__label{font-family:var(--f-mono);font-size:.64rem;letter-spacing:.24em;color:var(--c)}
.toc__book{font-family:var(--f-display);font-weight:400;text-transform:uppercase;font-size:1.6rem;line-height:1;color:var(--marble);margin:.45em 0 .5em}
.toc__scope{font-family:var(--f-mono);font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);margin-bottom:.9em}
.toc__list{list-style:none;display:grid}
.toc__list li{display:flex;gap:14px;align-items:baseline;padding:.72em 0;border-top:1px solid var(--line);font-size:.95rem;color:var(--text)}
.toc__list span{flex:none;width:1.6em;font-family:var(--f-mono);font-size:.7rem;color:var(--c)}
.contents__cta{margin-top:2.4em}

/* ============================================================
   FAQ
   ============================================================ */
.faq{max-width:780px;margin:0 auto;padding:clamp(50px,7vw,100px) clamp(24px,5vw,48px);text-align:center}
.faq__title{font-family:var(--f-display);font-weight:400;text-transform:uppercase;font-size:clamp(1.9rem,5vw,3rem);color:var(--marble);margin:.4em 0 1.4em}
.faq__list{text-align:left;border-top:1px solid var(--line)}
.faq__item{border-bottom:1px solid var(--line)}
.faq__item summary{
  list-style:none;cursor:pointer;padding:22px 4px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-weight:600;color:var(--marble);font-size:1.02rem;transition:color .3s;
}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary:hover{color:var(--accent)}
.faq__plus{position:relative;width:14px;height:14px;flex:none}
.faq__plus::before,.faq__plus::after{content:"";position:absolute;background:var(--accent);transition:.3s var(--ease)}
.faq__plus::before{left:0;top:6px;width:14px;height:2px}
.faq__plus::after{left:6px;top:0;width:2px;height:14px}
.faq__item[open] .faq__plus::after{transform:rotate(90deg);opacity:0}
.faq__item p{padding:0 4px 24px;color:var(--ash);max-width:62ch}

/* ============================================================
   FINAL CTA
   ============================================================ */
.final{
  position:relative;text-align:center;overflow:hidden;
  padding:clamp(80px,11vw,150px) clamp(24px,5vw,48px);
  border-top:1px solid var(--line);
}
.final__glow{
  position:absolute;left:50%;bottom:-30%;transform:translateX(-50%);width:70vw;height:60vh;z-index:0;
  background:radial-gradient(50% 50% at 50% 50%,var(--accent-soft),transparent 70%);filter:blur(40px);
}
.final__title{position:relative;z-index:2;font-family:var(--f-display);font-weight:400;text-transform:uppercase;font-size:clamp(2.4rem,7vw,5rem);line-height:.95;color:var(--marble)}
.final__sub{position:relative;z-index:2;color:var(--text);margin:.8em auto 2em;font-family:var(--f-mono);font-size:.85rem;letter-spacing:.1em}
.final__fine{position:relative;z-index:2;margin-top:1.6em;font-family:var(--f-mono);font-size:.64rem;letter-spacing:.14em;color:var(--faint);text-transform:uppercase}

/* ============================================================
   FOOTER
   ============================================================ */
.footer{border-top:1px solid var(--line);padding:48px clamp(24px,5vw,72px);background:var(--carbon)}
.footer__top{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:18px;padding-bottom:28px;border-bottom:1px solid var(--line)}
.footer__mantra{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.28em;color:var(--ash)}
.footer__bottom{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;padding-top:24px;font-family:var(--f-mono);font-size:.66rem;letter-spacing:.08em;color:var(--faint)}
.footer__links{display:flex;gap:22px}
.footer__links a:hover{color:var(--accent)}
.footer__disclaimer{margin-top:22px;padding-top:18px;border-top:1px solid var(--line);font-family:var(--f-mono);font-size:.66rem;letter-spacing:.06em;line-height:1.7;color:var(--ash)}

/* ============================================================
   STICKY MOBILE PURCHASE BAR
   ============================================================ */
.buybar{display:none}
@media (max-width:860px){
  .buybar{
    position:fixed;left:0;right:0;bottom:0;z-index:48;
    display:flex;align-items:center;justify-content:space-between;gap:14px;
    padding:10px max(16px,env(safe-area-inset-right)) calc(10px + env(safe-area-inset-bottom)) max(16px,env(safe-area-inset-left));
    background:rgba(8,10,14,.94);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border-top:1px solid var(--line-strong);
    box-shadow:0 -20px 50px -20px rgba(0,0,0,.9);
    transform:translateY(110%);visibility:hidden;
    transition:transform .35s var(--ease),visibility .35s var(--ease);
  }
  .buybar.is-visible{transform:none;visibility:visible}
  .buybar__info{display:flex;flex-direction:column;gap:2px;min-width:0}
  .buybar__label{font-family:var(--f-mono);font-size:.6rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ash);white-space:nowrap}
  .buybar__price{font-family:var(--f-display);font-size:1.5rem;line-height:1;color:var(--marble)}
  .buybar__price s{font-family:var(--f-mono);font-size:.55em;color:var(--faint);margin-right:.2em}
  .buybar__btn{flex:none;min-height:48px;padding:.85em 1.2em;font-size:.76rem}
  .nav.is-open ~ .buybar{transform:translateY(110%);visibility:hidden}
}
@media (max-width:860px) and (prefers-reduced-motion:reduce){.buybar{transition:none}}

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
[data-reveal]{opacity:0;transform:translateY(30px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
[data-reveal].is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  [data-reveal]{opacity:1;transform:none;transition:none}
  .hero__scroll span{animation:none}
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:1024px){
  .hud__rail{display:none}
  .inside__grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:860px){
  .nav__burger{display:flex}
  .btn--nav{margin-left:auto;margin-right:6px}
  .nav__links{
    position:fixed;left:0;right:0;top:0;z-index:45;
    flex-direction:column;gap:0;align-items:stretch;
    padding:80px clamp(20px,6vw,32px) 26px;
    background:rgba(8,10,14,.97);backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line);
    box-shadow:0 30px 80px -40px rgba(0,0,0,.9);
    transform:translateY(-105%);visibility:hidden;
    transition:transform .42s var(--ease),visibility .42s var(--ease);
  }
  .nav.is-open .nav__links{transform:translateY(0);visibility:visible}
  /* keep logo, nav CTA and the burger/close button above the open menu panel */
  .nav .brand,.nav .btn--nav,.nav__burger{position:relative;z-index:46}
  .nav__links a{font-size:1.05rem;letter-spacing:.1em;padding:16px 2px;border-top:1px solid var(--line);color:var(--marble)}
  .nav__links a:first-child{border-top:0}
  .nav__links a::after{display:none}
  .book,.book--reverse{grid-template-columns:1fr;gap:30px}
  .book--reverse .book__media{order:0}
  .book__media{width:100%;max-width:340px;margin:0 auto}
  .book__index{top:8px}
  .contents__grid{grid-template-columns:1fr}
  .audience{grid-template-columns:1fr}
}
@media (max-width:560px){
  .hud__bracket{width:22px;height:22px}
  .hud__coords{display:none}
  .nav{padding-left:max(16px,env(safe-area-inset-left));padding-right:max(16px,env(safe-area-inset-right))}
  .brand__type{display:none}
  .btn--nav{font-size:.66rem;padding:.62em .9em;min-height:44px}
  .hero{padding-top:108px;padding-bottom:72px}
  .hero__stats{gap:24px 32px}
  .inside__grid{grid-template-columns:1fr}
  .btn--xl{width:100%;justify-content:center}
  .book__buy{flex-direction:column;align-items:stretch;gap:14px}
  .book__buy .btn{width:100%;justify-content:center}
  .price{justify-content:flex-start}
  .price__note{order:3}
  .bundle__glow{filter:blur(45px);opacity:.5}
  .footer__bottom{flex-direction:column;align-items:flex-start}
}