/* ==========================================================
   Shared stylesheet for the whole store
   ========================================================== */
:root{
  --paper:#FAF8F4; --surface:#FFFFFF; --ink:#16181D; --ink-2:#2A2E36; --muted:#5B606B;
  --line:#E7E3DA; --line-2:#D9D4C8; --tint:#F2EFE8;
  --primary:oklch(0.50 0.17 262); --primary-hover:oklch(0.44 0.17 262); --primary-soft:oklch(0.95 0.03 262);
  --amber:oklch(0.80 0.14 75); --ok:oklch(0.58 0.13 155);
  --accent:var(--primary);
  --serif:"Newsreader", Georgia, serif; --sans:"Geist", system-ui, -apple-system, "Segoe UI", sans-serif; --mono:"Geist Mono", ui-monospace, Menlo, monospace;
  --r-sm:8px; --r:12px; --r-lg:16px; --r-xl:24px;
  --shadow-sm:0 1px 2px rgba(22,24,29,.05); --shadow:0 2px 6px rgba(22,24,29,.05),0 12px 32px -12px rgba(22,24,29,.14);
  --shadow-lg:0 4px 12px rgba(22,24,29,.06),0 30px 60px -20px rgba(22,24,29,.25);
  --max:1200px; --gutter:20px;
}
@media (min-width:768px){:root{--gutter:32px}}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-hover);text-decoration:underline;text-underline-offset:3px}
h1,h2,h3,h4{margin:0;line-height:1.15;text-wrap:balance}
p{margin:0;text-wrap:pretty}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* Layout */
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
.section{padding:56px 0}
@media (min-width:900px){.section{padding:96px 0}}
.section--tint{background:var(--tint)}
.section--ink{background:var(--ink);color:#F4F2EE}
.section-head{display:flex;flex-direction:column;gap:10px;margin-bottom:32px;max-width:680px}
.section-head--row{max-width:none;flex-direction:row;align-items:end;justify-content:space-between;flex-wrap:wrap;gap:16px}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.section--ink .eyebrow{color:#A9ADB6}
.h1{font-family:var(--serif);font-weight:500;font-size:clamp(40px,6vw,68px);letter-spacing:-.02em;line-height:1.04}
.h2{font-family:var(--serif);font-weight:500;font-size:clamp(30px,4vw,44px);letter-spacing:-.015em}
.h3{font-size:18px;font-weight:600;letter-spacing:-.01em}
.lead{font-size:clamp(17px,1.6vw,19px);color:var(--muted);line-height:1.55}
.section--ink .lead{color:#C4C7CE}
em.serif-em{font-style:italic;font-family:var(--serif)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:0 22px;border-radius:var(--r);font:600 15px/1 var(--sans);border:1px solid transparent;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background .15s ease,color .15s ease;text-decoration:none!important;white-space:nowrap}
.btn:hover{transform:translateY(-1px)}
.btn--primary{background:var(--primary);color:#fff;box-shadow:0 1px 0 rgba(255,255,255,.15) inset,0 6px 16px -6px oklch(0.50 0.17 262 / .6)}
.btn--primary:hover{background:var(--primary-hover);color:#fff}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line-2)}
.btn--ghost:hover{background:var(--surface);color:var(--ink);border-color:var(--ink)}
.btn--light{background:#fff;color:var(--ink)}
.btn--light:hover{color:var(--ink)}
.btn--lg{min-height:56px;padding:0 28px;font-size:16px;border-radius:14px}
.btn--block{width:100%}
.btn .price-tag{font-family:var(--mono);font-weight:500;opacity:.85;padding-left:10px;border-left:1px solid rgba(255,255,255,.35)}
.btn .price-tag:empty{display:none}
.btn-row{display:flex;flex-wrap:wrap;gap:12px}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(250,248,244,.86);backdrop-filter:saturate(1.4) blur(12px);-webkit-backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;gap:16px;height:68px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;letter-spacing:-.01em;font-size:17px}
.logo:hover{color:var(--ink);text-decoration:none}
.logo-mark{width:30px;height:30px;border-radius:8px;background:var(--ink);color:#fff;display:grid;place-items:center;font:600 15px/1 var(--serif);font-style:italic}
.nav{display:none;gap:4px;margin-left:24px}
.nav a{color:var(--ink-2);font-size:15px;padding:8px 12px;border-radius:8px}
.nav a:hover,.nav a[aria-current="page"]{background:var(--tint);color:var(--ink);text-decoration:none}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:8px}
.icon-btn{width:44px;height:44px;display:grid;place-items:center;border-radius:10px;border:1px solid transparent;background:none;color:var(--ink);cursor:pointer}
.icon-btn:hover{background:var(--tint);color:var(--ink)}
.header-cta{display:none}
.menu-btn{display:grid}
.mobile-nav{display:none;border-top:1px solid var(--line);background:var(--paper)}
.mobile-nav.open{display:block}
.mobile-nav a{display:block;padding:14px var(--gutter);color:var(--ink);border-bottom:1px solid var(--line);font-weight:500}
@media (min-width:900px){.nav{display:flex}.header-cta{display:inline-flex}.menu-btn{display:none}.mobile-nav{display:none!important}}

/* Footer */
.site-footer{background:var(--ink);color:#C4C7CE;padding:56px 0 32px;font-size:14px}
.site-footer a{color:#E8E6E1}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media (min-width:768px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}}
.footer-grid h4{color:#fff;font-size:13px;font-family:var(--mono);font-weight:500;letter-spacing:.06em;text-transform:uppercase;margin-bottom:14px}
.footer-grid li{margin-bottom:8px}
.site-footer .logo{color:#fff}.site-footer .logo-mark{background:#fff;color:var(--ink)}
.footer-bottom{border-top:1px solid #2E323A;margin-top:40px;padding-top:24px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;color:#8C919B}

/* Hero (home) */
.hero{padding:48px 0 64px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-20% -10% auto auto;width:70%;height:120%;background:radial-gradient(closest-side,oklch(0.93 0.05 262 / .7),transparent 70%);pointer-events:none}
.hero .wrap{position:relative;display:grid;gap:48px;align-items:center}
@media (min-width:960px){.hero{padding:80px 0 104px}.hero .wrap{grid-template-columns:1.05fr 1fr}}
.hero-copy{display:flex;flex-direction:column;gap:24px}
.hero-search{position:relative;max-width:480px}
.hero-meta{display:flex;flex-wrap:wrap;gap:8px 20px;color:var(--muted);font-size:14px}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta svg{color:var(--ok)}
.cover-fan{position:relative;height:clamp(320px,48vw,500px);display:flex;justify-content:center;align-items:center}
.cover-fan .fan-item{position:absolute;width:clamp(150px,22vw,230px);transition:transform .4s ease}
.cover-fan .fan-item .cover{box-shadow:var(--shadow-lg)}
.cover-fan{perspective:1400px}
.fan-stage{position:absolute;inset:0;display:flex;justify-content:center;align-items:center;transform-style:preserve-3d;transform:rotateY(calc(var(--mx,0) * 14deg)) rotateX(calc(var(--my,0) * -10deg));transition:transform .35s cubic-bezier(.2,.7,.2,1)}
.cover-fan .fan-item{transform-style:preserve-3d}
.cover-fan .fan-item:nth-child(1){transform:translateX(-62%) rotate(-9deg) translateY(16px) translateZ(-60px)}
.cover-fan .fan-item:nth-child(2){transform:translateX(-22%) rotate(-3deg) translateZ(0);z-index:2}
.cover-fan .fan-item:nth-child(3){transform:translateX(22%) rotate(3deg) translateZ(40px);z-index:3}
.cover-fan .fan-item:nth-child(4){transform:translateX(62%) rotate(9deg) translateY(16px) translateZ(80px);z-index:4}
.cover-fan:hover .fan-item:nth-child(1){transform:translateX(-74%) rotate(-12deg) translateY(16px) translateZ(-60px)}
.cover-fan:hover .fan-item:nth-child(4){transform:translateX(74%) rotate(12deg) translateY(16px) translateZ(80px)}
.cover-fan .fan-item .cover{animation:floatY 6s ease-in-out infinite}
.cover-fan .fan-item:nth-child(2) .cover{animation-delay:-1.5s}
.cover-fan .fan-item:nth-child(3) .cover{animation-delay:-3s}
.cover-fan .fan-item:nth-child(4) .cover{animation-delay:-4.5s}
.cover-fan .fan-item .cover{transition:transform .35s cubic-bezier(.2,.7,.2,1)}
.cover-fan .fan-item:hover .cover{animation-play-state:paused;transform:translateY(-18px) scale(1.04)}

/* Search + filter */
.search{position:relative;width:100%}
.search input{width:100%;height:56px;padding:0 18px 0 50px;border-radius:14px;border:1px solid var(--line-2);background:var(--surface);font:16px var(--sans);color:var(--ink);box-shadow:var(--shadow-sm);transition:border-color .15s,box-shadow .15s}
.search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-soft)}
.search svg{position:absolute;left:18px;top:50%;transform:translateY(-50%);color:var(--muted);pointer-events:none}
.chips{display:flex;gap:8px;overflow-x:auto;padding:4px 2px 8px;margin:0 calc(var(--gutter) * -1);padding-left:var(--gutter);padding-right:var(--gutter);scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
@media (min-width:768px){.chips{flex-wrap:wrap;overflow:visible;margin:0;padding:4px 0}}
.chip{flex:none;height:42px;padding:0 16px;border-radius:999px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink-2);font:500 14px var(--sans);cursor:pointer;display:inline-flex;align-items:center;gap:8px;transition:all .15s;white-space:nowrap}
.chip:hover{border-color:var(--ink)}
.chip[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:#fff}
.chip .count{font-family:var(--mono);font-size:12px;opacity:.6}
.library-tools{display:flex;flex-direction:column;gap:16px;margin-bottom:32px}
.result-line{color:var(--muted);font-size:14px;margin-bottom:16px;min-height:22px}
.empty{display:none;text-align:center;padding:64px 20px;border:1px dashed var(--line-2);border-radius:var(--r-lg);color:var(--muted)}
.empty.show{display:block}
.empty .btn{margin-top:16px}

/* Category tiles */
.cat-grid{display:grid;gap:12px;grid-template-columns:1fr}
@media (min-width:600px){.cat-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1000px){.cat-grid{grid-template-columns:repeat(5,1fr)}}
.cat-tile{display:flex;flex-direction:column;gap:10px;padding:22px;border-radius:var(--r-lg);background:var(--surface);border:1px solid var(--line);color:var(--ink);transition:transform .2s,box-shadow .2s,border-color .2s;min-height:150px}
.cat-tile:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--line-2);color:var(--ink);text-decoration:none}
.cat-tile .ico{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;background:var(--tint)}
.cat-tile .name{font-weight:600;font-size:16px}
.cat-tile .desc{font-size:14px;color:var(--muted);line-height:1.45}
.cat-tile .n{margin-top:auto;font-family:var(--mono);font-size:12px;color:var(--muted)}

/* Book grid + cards */
.book-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media (min-width:640px){.book-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1000px){.book-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (min-width:1200px){.book-grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}}
.card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--line-2)}
.card-media{display:block;padding:28px 28px 0;background:var(--card-tint,var(--tint));position:relative}
.card-media .cover{transition:transform .3s ease;transform-origin:bottom center}
.card:hover .card-media .cover{transform:translateY(-4px)}
.card-new{position:absolute;top:14px;left:14px;z-index:2;font:500 11px/1 var(--mono);letter-spacing:.06em;text-transform:uppercase;background:var(--ink);color:#fff;padding:6px 8px;border-radius:6px}
.card-body{display:flex;flex-direction:column;gap:12px;padding:20px 22px 22px;flex:1}
.badge{align-self:flex-start;display:inline-flex;align-items:center;gap:6px;font:500 11.5px/1 var(--mono);letter-spacing:.04em;text-transform:uppercase;color:var(--ink-2);background:var(--tint);padding:6px 9px;border-radius:6px}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--dot,var(--primary))}
.card-title{font-family:var(--serif);font-weight:500;font-size:23px;line-height:1.15;letter-spacing:-.01em}
.card-title a{color:var(--ink)}
.card-title a:hover{text-decoration:none;color:var(--primary)}
.card-desc{color:var(--muted);font-size:15px;line-height:1.5}
.card-topics{display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--ink-2)}
.card-topics li{display:flex;gap:8px;align-items:flex-start}
.card-topics svg{flex:none;margin-top:4px;color:var(--ok)}
.card-actions{margin-top:auto;padding-top:8px;display:grid;grid-template-columns:auto 1fr;gap:8px}
.card-actions .btn{min-height:46px;padding:0 12px;font-size:14px;white-space:nowrap}

/* Cover (image or typographic fallback) */
.cover{position:relative;aspect-ratio:4/5;border-radius:6px 10px 10px 6px;overflow:hidden;background:var(--cover-bg,#222);box-shadow:0 2px 4px rgba(0,0,0,.08),0 18px 30px -14px rgba(0,0,0,.35)}
.cover::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.18) 0,rgba(255,255,255,.12) 2.5%,transparent 5%);pointer-events:none}
.cover img{width:100%;height:100%;object-fit:contain;background:var(--cover-bg,#222)}
.cover--fill img{object-fit:cover}
.cover-type{position:absolute;inset:0;display:flex;flex-direction:column;padding:9% 10%;color:var(--cover-ink,#fff)}
.cover-type .ct-kicker{font:500 clamp(8px,1.6cqw,11px)/1.3 var(--mono);letter-spacing:.1em;text-transform:uppercase;opacity:.8}
.cover-type .ct-title{margin-top:auto;font-family:var(--serif);font-weight:500;font-size:clamp(18px,11cqw,40px);line-height:1.02;letter-spacing:-.02em}
.cover-type .ct-sub{margin-top:10px;font-size:clamp(9px,4.4cqw,14px);line-height:1.35;opacity:.85}
.cover-type .ct-rule{height:3px;width:28%;background:var(--cover-accent,#fff);margin-top:14px;border-radius:2px}
.cover-type .ct-foot{margin-top:auto;font:500 clamp(8px,3.4cqw,11px)/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;opacity:.75}
.cover{container-type:inline-size}

/* How buying works */
.steps{display:grid;gap:16px;grid-template-columns:1fr;counter-reset:s}
@media (min-width:768px){.steps{grid-template-columns:repeat(3,1fr)}}
.step{padding:28px;border-radius:var(--r-lg);border:1px solid #2E323A;background:#1D2026}
.step .num{font:500 13px var(--mono);color:var(--amber);margin-bottom:16px;display:block}
.step h3{color:#fff;margin-bottom:8px}
.step p{color:#B9BDC6;font-size:15px}

/* ================= Sales page ================= */
.crumbs{font-size:14px;color:var(--muted);padding:20px 0 0;display:flex;gap:8px;flex-wrap:wrap}
.crumbs a{color:var(--muted)}
.product-hero{padding:24px 0 56px;position:relative;overflow:hidden}
.product-hero::before{content:"";position:absolute;inset:auto auto -30% -15%;width:70%;height:110%;background:radial-gradient(closest-side,color-mix(in oklch,var(--accent) 22%,transparent),transparent 72%);pointer-events:none}
.product-hero .wrap{position:relative;display:grid;gap:40px;align-items:center}
@media (min-width:960px){.product-hero{padding:40px 0 96px}.product-hero .wrap{grid-template-columns:.9fr 1.1fr;gap:72px}}
.product-cover{max-width:400px;width:78%;margin:0 auto}
@media (min-width:960px){.product-cover{width:100%}}
.product-cover .cover{box-shadow:var(--shadow-lg);transform:rotate(-1.5deg)}
.product-info{display:flex;flex-direction:column;gap:20px}
.product-info .subtitle{font-family:var(--serif);font-style:italic;font-size:clamp(19px,2vw,23px);color:var(--ink-2);line-height:1.35}
.benefit-list{display:flex;flex-direction:column;gap:12px}
.benefit-list li{display:flex;gap:12px;align-items:flex-start;font-size:16px}
.benefit-list .tick{flex:none;width:24px;height:24px;border-radius:50%;background:color-mix(in oklch,var(--accent) 14%,white);color:var(--accent);display:grid;place-items:center;margin-top:1px}
.buy-box{display:flex;flex-direction:column;gap:12px;padding-top:4px}
.buy-note{font-size:13.5px;color:var(--muted);display:flex;flex-wrap:wrap;gap:4px 10px;align-items:center}
.buy-note svg{color:var(--ok)}
.fact-row{display:flex;flex-wrap:wrap;gap:8px}
.fact{font:500 12px/1 var(--mono);letter-spacing:.03em;padding:8px 10px;border-radius:8px;background:var(--surface);border:1px solid var(--line);color:var(--ink-2)}

.problem{display:grid;gap:32px}
@media (min-width:900px){.problem{grid-template-columns:1fr 1.2fr;gap:72px}}
.problem-points{display:flex;flex-direction:column;gap:14px}
.problem-points li{padding:18px 20px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line);font-size:16px;line-height:1.5}
.problem-points li strong{display:block;margin-bottom:2px}

.feature-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:640px){.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1000px){.feature-grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}}
.feature{padding:26px;border-radius:var(--r-lg);background:var(--surface);border:1px solid var(--line);display:flex;flex-direction:column;gap:10px}
.feature .ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:color-mix(in oklch,var(--accent) 12%,white);color:var(--accent);margin-bottom:6px}
.feature p{color:var(--muted);font-size:15px}

.inside-grid{display:grid;gap:12px;grid-template-columns:1fr}
@media (min-width:700px){.inside-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1050px){.inside-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.inside{padding:22px;border-radius:var(--r-lg);background:var(--surface);border:1px solid var(--line);display:flex;flex-direction:column;gap:8px}
.inside .tag{font:500 11.5px/1 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--accent)}
.inside h3{font-size:17px}
.inside p{font-size:14.5px;color:var(--muted);line-height:1.5}
.inside ul{display:flex;flex-direction:column;gap:4px;font-size:14px;color:var(--ink-2);margin-top:4px}
.inside ul li::before{content:"–  ";color:var(--muted)}

.preview-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:700px){.preview-grid{grid-template-columns:repeat(3,1fr)}}
.preview-slot{aspect-ratio:3/4;border-radius:var(--r);border:1px dashed var(--line-2);background:repeating-linear-gradient(135deg,var(--tint) 0 10px,#EDE9E0 10px 20px);display:flex;align-items:flex-end;padding:14px;overflow:hidden}
.preview-slot img{width:100%;height:100%;object-fit:cover}
.preview-slot:has(img){aspect-ratio:auto;align-self:start}
.preview-slot:has(img) img{height:auto;display:block}
.preview-slot span{font:500 12px/1.45 var(--mono);color:var(--ink-2);background:rgba(255,255,255,.9);padding:8px 10px;border-radius:6px}
.preview-note{margin-top:14px;font-size:13px;color:var(--muted);font-family:var(--mono)}

.persona-grid{display:grid;gap:12px;grid-template-columns:1fr}
@media (min-width:640px){.persona-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1000px){.persona-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.persona{padding:22px;border-radius:var(--r-lg);background:var(--surface);border:1px solid var(--line);display:flex;flex-direction:column;gap:8px}
.persona .ico{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:var(--tint);color:var(--ink)}
.persona p{font-size:14.5px;color:var(--muted)}
.not-for{margin-top:20px;font-size:15px;color:var(--muted)}

.get-box{display:grid;gap:32px;align-items:center;padding:32px;border-radius:var(--r-xl);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow)}
@media (min-width:900px){.get-box{grid-template-columns:1.3fr 1fr;padding:48px;gap:56px}}
.get-list{display:grid;gap:12px;grid-template-columns:1fr}
@media (min-width:600px){.get-list{grid-template-columns:1fr 1fr}}
.get-list li{display:flex;gap:10px;align-items:flex-start;font-size:15.5px}
.get-list svg{flex:none;color:var(--ok);margin-top:4px}
.get-cta{display:flex;flex-direction:column;gap:12px;padding:24px;border-radius:var(--r-lg);background:var(--tint)}
.get-cta .price{font-family:var(--serif);font-size:40px;line-height:1}
.get-cta .price:empty{display:none}

.faq{max-width:820px;display:flex;flex-direction:column;gap:10px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:0 20px}
.faq summary{cursor:pointer;list-style:none;padding:18px 0;font-weight:600;display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font:400 22px/1 var(--sans);color:var(--muted);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 0 18px;color:var(--muted)}
.placeholder{font-family:var(--mono);font-size:.9em;background:oklch(0.95 0.06 85);color:oklch(0.40 0.09 70);padding:1px 6px;border-radius:4px}

.final-cta{text-align:center;display:flex;flex-direction:column;align-items:center;gap:20px;padding:24px 0}
.final-cta .lead{max-width:600px}
.final-cover{width:120px;margin-bottom:8px}

.sticky-buy{position:fixed;left:0;right:0;bottom:0;z-index:60;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-top:1px solid var(--line);padding:10px var(--gutter) calc(10px + env(safe-area-inset-bottom));display:flex;align-items:center;gap:12px;transform:translateY(110%);transition:transform .25s ease}
.sticky-buy.show{transform:none}
.sticky-buy .sb-title{flex:1;min-width:0;font-weight:600;font-size:14px;line-height:1.25;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.sticky-buy .btn{min-height:50px}
@media (min-width:900px){.sticky-buy{display:none}}
body.has-sticky{padding-bottom:0}

/* Related */
.related .book-grid{margin-top:8px}

/* Thank-you */
.ty{min-height:calc(100vh - 68px);display:grid;place-items:center;padding:48px 0 72px}
.ty-card{max-width:560px;width:100%;margin:0 auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--shadow);padding:40px 28px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:16px}
@media (min-width:600px){.ty-card{padding:48px}}
.ty-check{width:56px;height:56px;border-radius:50%;background:color-mix(in oklch,var(--ok) 16%,white);color:var(--ok);display:grid;place-items:center}
.ty-status{font:500 13px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--ok)}
.ty-book{display:flex;gap:18px;align-items:center;text-align:left;width:100%;padding:16px;border-radius:var(--r-lg);background:var(--tint);margin:8px 0}
.ty-book .cover{width:84px;flex:none}
.ty-book .label{font:500 11.5px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.ty-book .t{font-family:var(--serif);font-size:21px;line-height:1.2}
.ty-save{font-size:14px;color:var(--muted)}
.ty-help{font-size:13.5px;color:var(--muted);border-top:1px solid var(--line);padding-top:16px;width:100%}

/* About */
.prose{max-width:720px;display:flex;flex-direction:column;gap:18px;font-size:17px}
.prose h2{margin-top:24px}

/* Toast (placeholder links) */
.toast{position:fixed;left:50%;bottom:90px;transform:translate(-50%,20px);opacity:0;z-index:100;background:var(--ink);color:#fff;padding:14px 18px;border-radius:12px;font-size:14px;max-width:min(92vw,460px);box-shadow:var(--shadow-lg);transition:all .25s;pointer-events:none}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast code{font-family:var(--mono);color:var(--amber)}

/* Checkout */
.co-back{display:inline-block;color:var(--muted);font-size:14px;margin-bottom:24px}
.co-grid{display:grid;gap:24px;align-items:start}
@media (min-width:900px){.co-grid{grid-template-columns:1.4fr 1fr;gap:40px}}
.co-book{display:grid;gap:24px;padding:28px;border-radius:var(--r-xl);background:var(--surface);border:1px solid var(--line)}
@media (min-width:600px){.co-book{grid-template-columns:180px 1fr;align-items:start}}
.co-cover{max-width:200px;width:60%;margin:0 auto}
@media (min-width:600px){.co-cover{width:100%}}
.co-info{display:flex;flex-direction:column;gap:12px}
.co-sub{font-family:var(--serif);font-style:italic;font-size:19px;color:var(--ink-2);line-height:1.35}
.co-topics{display:flex;flex-direction:column;gap:8px;font-size:15px;margin-top:4px}
.co-topics li{display:flex;gap:10px;align-items:flex-start}
.co-topics svg{flex:none;margin-top:5px;color:var(--ok)}
.co-summary{display:flex;flex-direction:column;gap:14px;padding:28px;border-radius:var(--r-xl);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow)}
@media (min-width:900px){.co-summary{position:sticky;top:96px}}
.co-line{display:flex;justify-content:space-between;gap:16px;font-size:15px}
.co-line span:last-child{text-align:right}
.co-muted{color:var(--muted)}
.co-total{border-top:1px solid var(--line);padding-top:14px;margin-bottom:6px;font-weight:600;font-size:17px}
.co-steps{display:flex;flex-direction:column;gap:8px;border-top:1px solid var(--line);padding-top:14px;font-size:14px;color:var(--muted)}
.co-steps li{display:flex;gap:10px;align-items:center}
.co-steps span{width:22px;height:22px;border-radius:50%;background:var(--tint);display:grid;place-items:center;font:500 12px var(--mono);color:var(--ink)}
[hidden]{display:none!important}

/* ================= Motion & 3D ================= */
@keyframes floatY{0%,100%{translate:0 0}50%{translate:0 -14px}}
@keyframes drift{0%{transform:translate(0,0) scale(1)}33%{transform:translate(6%,-8%) scale(1.08)}66%{transform:translate(-5%,6%) scale(.95)}100%{transform:translate(0,0) scale(1)}}
@keyframes popIn{from{opacity:0;transform:scale(.6) rotate(-20deg)}to{opacity:1;transform:none}}
@keyframes shimmer{from{transform:translateX(-120%) skewX(-20deg)}to{transform:translateX(220%) skewX(-20deg)}}

/* Ambient hero blobs */
.hero-blobs{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.hero-blobs span{position:absolute;border-radius:50%;filter:blur(60px);opacity:.55;animation:drift 18s ease-in-out infinite}
.hero-blobs span:nth-child(1){width:420px;height:420px;background:oklch(0.85 0.09 262);top:-80px;right:6%}
.hero-blobs span:nth-child(2){width:320px;height:320px;background:oklch(0.90 0.09 75);bottom:-60px;right:30%;animation-delay:-6s;animation-duration:22s}
.hero-blobs span:nth-child(3){width:260px;height:260px;background:oklch(0.88 0.08 190);top:30%;left:-80px;animation-delay:-11s;animation-duration:26s}
.hero::before{display:none}

/* Scroll reveal */
.reveal{opacity:0;transform:translateY(28px) scale(.98);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1);transition-delay:var(--d,0s)}
.reveal.in{opacity:1;transform:none}
.card.reveal.in:hover{transform:translateY(-3px)}

/* 3D book tilt on cards */
.card-media{perspective:900px}
.card-media .cover{transform-style:preserve-3d;transition:transform .5s cubic-bezier(.2,.7,.2,1),box-shadow .5s}
.card:hover .card-media .cover{transform:rotateY(-18deg) rotateX(4deg) translateY(-6px) translateZ(10px);box-shadow:-2px 2px 0 #e9e4da,-4px 4px 0 #ddd6c9,18px 26px 40px -16px rgba(0,0,0,.45)}

/* Glare that follows the pointer */
.cover .glare{position:absolute;inset:0;pointer-events:none;background:radial-gradient(circle at var(--gx,50%) var(--gy,50%),rgba(255,255,255,.35),transparent 45%);opacity:0;transition:opacity .3s;z-index:3;mix-blend-mode:soft-light}
[data-tilt]:hover .glare{opacity:1}

/* Product cover: pointer-driven 3D + page edges */
.product-cover{perspective:1200px}
.product-cover .tilt-inner{transform-style:preserve-3d;transform:rotateY(calc(var(--tx,0) * 1deg - 8deg)) rotateX(calc(var(--ty,0) * 1deg + 2deg));transition:transform .3s cubic-bezier(.2,.7,.2,1);animation:floatY 7s ease-in-out infinite}
.product-cover .cover{transform:none;box-shadow:5px 5px 0 -1px #f7f4ee,5px 5px 0 0 #d9d3c6,10px 10px 0 -1px #f7f4ee,10px 10px 0 0 #d9d3c6,30px 40px 60px -20px rgba(0,0,0,.35)}
.final-cover .cover,.ty-book .cover{animation:floatY 6s ease-in-out infinite}

/* Buttons: shine sweep */
.btn--primary{position:relative;overflow:hidden}
.btn--primary::after{content:"";position:absolute;top:0;bottom:0;left:0;width:40%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);transform:translateX(-120%) skewX(-20deg);pointer-events:none}
.btn--primary:hover::after{animation:shimmer .8s ease}

/* Icons & tiles */
.cat-tile .ico,.feature .ico,.persona .ico{transition:transform .35s cubic-bezier(.3,1.6,.5,1)}
.cat-tile:hover .ico,.feature:hover .ico,.persona:hover .ico{transform:translateY(-3px) rotate(-8deg) scale(1.08)}
.feature,.inside,.persona,.problem-points li,.step{transition:transform .25s ease,box-shadow .25s ease,border-color .25s}
.feature:hover,.inside:hover,.persona:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.step:hover{transform:translateY(-4px);border-color:#4A4F59}
.ty-check{animation:popIn .6s cubic-bezier(.3,1.6,.5,1) both}

@media (hover:none){.card:hover .card-media .cover{transform:none}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.reveal{opacity:1;transform:none}}