/* ==========================================================================
   Unshaken — Bassma Minato
   Design system adapted from design-system/unshaken/MASTER.md
   Warm "paper & roots" palette derived from the brand logo (#DACAAF)
   Mobile-first. Safe-area aware. Reduced-motion aware.
   ========================================================================== */

/* ---------- 1. Tokens ---------------------------------------------------- */
:root {
  /* Brand */
  --color-ink:            #1C1917;  /* primary / espresso            */
  --color-ink-soft:       #44403C;  /* secondary                     */
  --color-ink-muted:      #6B6152;  /* muted warm grey               */
  --color-accent:         #A16207;  /* gold CTA (white text = 4.9:1) */
  --color-accent-deep:    #854D0E;
  --color-paper:          #F7F3EA;  /* warm page background          */
  --color-paper-deep:     #EFE8DA;  /* muted surface                 */
  --color-card:           #FFFDF9;
  --color-border:         #E2D8C4;
  --color-border-strong:  #CDBFA4;
  --color-logo-bg:        #DACAAF;  /* exact match to logo.png       */
  --color-success:        #3F6212;
  --color-danger:         #B91C1C;

  /* Typography */
  --font-display: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Space scale (density 4/10) */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Shape & depth */
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 2px rgba(28, 25, 23, .06);
  --shadow-md: 0 4px 14px rgba(28, 25, 23, .09);
  --shadow-lg: 0 14px 34px rgba(28, 25, 23, .14);
  --shadow-book: 0 26px 50px -14px rgba(40, 30, 15, .45);

  /* Motion */
  --ease: cubic-bezier(.22, .61, .36, 1);
  --dur: 220ms;

  /* Layout */
  --shell: 1120px;
  --header-h: 64px;
  --safe-b: env(safe-area-inset-bottom, 0px);
  --safe-t: env(safe-area-inset-top, 0px);
  --safe-l: env(safe-area-inset-left, 0px);
  --safe-r: env(safe-area-inset-right, 0px);
}

/* ---------- 2. Reset ----------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-ink);
  background-color: var(--color-paper);
  /* faint paper grain, layered so it never blocks interaction */
  background-image:
    radial-gradient(120% 80% at 50% -10%, rgba(218, 202, 175, .55), transparent 60%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.035'/%3E%3C/svg%3E");
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  padding-left: var(--safe-l);
  padding-right: var(--safe-r);
}

body.nav-open { overflow: hidden; }

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

button, input, select, textarea { font: inherit; color: inherit; }

a { color: var(--color-accent-deep); text-decoration-thickness: 1px; text-underline-offset: 3px; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

h1 { font-size: clamp(2.4rem, 8vw, 4rem); }
h2 { font-size: clamp(1.75rem, 5.4vw, 2.6rem); }
h3 { font-size: clamp(1.15rem, 3.2vw, 1.4rem); line-height: 1.25; }

p { text-wrap: pretty; }

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

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

/* ---------- 3. Layout helpers ------------------------------------------- */
.shell {
  width: min(100% - 2.5rem, var(--shell));
  margin-inline: auto;
}
.shell--narrow { width: min(100% - 2.5rem, 760px); margin-inline: auto; }

.section { padding-block: var(--space-3xl); }
.section--tight { padding-block: var(--space-2xl); }
.section--paper-deep { background: var(--color-paper-deep); }
.section--ink { background: var(--color-ink); color: #F5EFE3; }
.section--ink h2, .section--ink h3 { color: #FFFDF9; }

.section-head { max-width: 640px; margin-inline: auto; text-align: center; }
.section-head p { color: var(--color-ink-muted); margin-top: var(--space-md); font-size: 1.05rem; }
.section--ink .section-head p { color: #CBBFA9; }

.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--font-body);
  font-size: .75rem; font-weight: 600; letter-spacing: .16em;
  text-transform: uppercase; color: var(--color-accent-deep);
}
.eyebrow::before {
  content: ""; width: 26px; height: 1px; background: currentColor; opacity: .6;
}
.section--ink .eyebrow { color: #D8B25E; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: 50%; top: -100px; transform: translateX(-50%);
  z-index: 200; background: var(--color-ink); color: #fff;
  padding: .7rem 1.2rem; border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  transition: top var(--dur) var(--ease);
}
.skip-link:focus { top: 0; }

/* ---------- 4. Buttons --------------------------------------------------- */
.btn {
  --btn-bg: var(--color-accent);
  --btn-fg: #fff;
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  min-height: 48px; padding: .85rem 1.5rem;
  background: var(--btn-bg); color: var(--btn-fg);
  border: 1px solid transparent; border-radius: var(--radius-pill);
  font-weight: 600; font-size: 1rem; line-height: 1;
  text-decoration: none; cursor: pointer;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
              background-color var(--dur) var(--ease), opacity var(--dur) var(--ease);
  -webkit-tap-highlight-color: transparent;
  box-shadow: 0 6px 16px -6px rgba(161, 98, 7, .6);
  touch-action: manipulation;
}
.btn:hover { background: var(--color-accent-deep); transform: translateY(-2px); }
.btn:active { transform: translateY(0) scale(.985); }
.btn[disabled], .btn[aria-busy="true"] { opacity: .6; pointer-events: none; }

.btn--lg { min-height: 56px; padding: 1.05rem 2rem; font-size: 1.06rem; }
.btn--block { width: 100%; }

.btn--ghost {
  --btn-bg: transparent; --btn-fg: var(--color-ink);
  border-color: var(--color-border-strong); box-shadow: none;
}
.btn--ghost:hover { background: rgba(28, 25, 23, .05); color: var(--color-ink); }

.btn--light { --btn-bg: #FFFDF9; --btn-fg: var(--color-ink); box-shadow: var(--shadow-md); }
.btn--light:hover { background: #fff; color: var(--color-ink); }

.btn__icon { width: 18px; height: 18px; flex: none; }

/* ---------- 5. Header ---------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  padding-top: var(--safe-t);
  background: rgba(247, 243, 234, .82);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.site-header.is-stuck { border-bottom-color: var(--color-border); box-shadow: var(--shadow-sm); }

.site-header__inner {
  height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-md);
}

.brand { display: inline-flex; align-items: center; gap: .65rem; text-decoration: none; color: inherit; }
.brand__mark {
  width: 38px; height: 38px; border-radius: 11px;
  background: var(--color-logo-bg); object-fit: cover;
  border: 1px solid rgba(28, 25, 23, .1);
}
.brand__name { display: flex; flex-direction: column; line-height: 1.05; }
.brand__name b { font-family: var(--font-display); font-size: 1.05rem; font-weight: 600; }
.brand__name span { font-size: .66rem; letter-spacing: .14em; text-transform: uppercase; color: var(--color-ink-muted); }

.nav { display: none; }
.nav a {
  color: var(--color-ink-soft); text-decoration: none; font-size: .93rem; font-weight: 500;
  padding: .5rem .1rem;
}
.nav a:hover { color: var(--color-ink); }

.site-header__actions { display: flex; align-items: center; gap: .5rem; }
.site-header__actions .btn { min-height: 42px; padding: .6rem 1.1rem; font-size: .92rem; }

.nav-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 12px;
  background: transparent; border: 1px solid var(--color-border-strong); cursor: pointer;
}
.nav-toggle span { position: relative; width: 18px; height: 2px; background: var(--color-ink); border-radius: 2px; }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 2px; background: var(--color-ink); border-radius: 2px;
  transition: transform var(--dur) var(--ease), top var(--dur) var(--ease);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

/* Mobile drawer */
.mobile-nav {
  position: fixed; inset: calc(var(--header-h) + var(--safe-t)) 0 0 0; z-index: 99;
  background: var(--color-paper);
  padding: var(--space-lg) 1.25rem calc(2rem + var(--safe-b));
  transform: translateY(-8px); opacity: 0; visibility: hidden;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur);
  overflow-y: auto;
}
.mobile-nav.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
.mobile-nav a {
  display: block; padding: 1rem .25rem; font-family: var(--font-display); font-size: 1.4rem;
  color: var(--color-ink); text-decoration: none; border-bottom: 1px solid var(--color-border);
}
.mobile-nav .btn { margin-top: var(--space-lg); }

@media (min-width: 900px) {
  .nav { display: flex; gap: 1.6rem; align-items: center; }
  .nav-toggle { display: none; }
}
@media (max-width: 420px) {
  .brand__name span { display: none; }
  .site-header__actions .btn { display: none; }
}

/* ---------- 6. Hero ------------------------------------------------------ */
.hero { position: relative; overflow: hidden; padding-block: var(--space-2xl) var(--space-3xl); }
.hero__grid { display: grid; gap: var(--space-2xl); align-items: center; }

.hero__eyebrow { margin-bottom: var(--space-md); }
.hero h1 { margin-bottom: .35rem; }
.hero h1 .accent { font-style: italic; color: var(--color-accent-deep); }
.hero__sub {
  font-family: var(--font-display); font-size: clamp(1.1rem, 3.6vw, 1.45rem);
  color: var(--color-ink-soft); margin-bottom: var(--space-md);
}
.hero__tagline {
  font-size: 1.02rem; color: var(--color-ink-muted); max-width: 46ch; margin-bottom: var(--space-lg);
  border-left: 2px solid var(--color-logo-bg); padding-left: var(--space-md); font-style: italic;
}

.rating { display: flex; align-items: center; gap: .6rem; margin-bottom: var(--space-lg); flex-wrap: wrap; }
.stars { display: inline-flex; gap: 2px; color: var(--color-accent); }
.stars svg { width: 17px; height: 17px; }
.rating span { font-size: .88rem; color: var(--color-ink-muted); }

.price-row { display: flex; align-items: baseline; gap: .75rem; margin-bottom: var(--space-lg); flex-wrap: wrap; }
.price { font-family: var(--font-display); font-size: 2.4rem; font-weight: 700; letter-spacing: -.02em; }
.price-note { font-size: .85rem; color: var(--color-ink-muted); }

.hero__cta { display: flex; flex-direction: column; gap: .7rem; margin-bottom: var(--space-lg); }
.hero__cta .btn { width: 100%; }
@media (min-width: 520px) {
  .hero__cta { flex-direction: row; flex-wrap: wrap; }
  .hero__cta .btn { width: auto; }
}

.trust-row { display: flex; flex-wrap: wrap; gap: .5rem 1.25rem; font-size: .85rem; color: var(--color-ink-muted); }
.trust-row li { display: inline-flex; align-items: center; gap: .4rem; list-style: none; }
.trust-row svg { width: 15px; height: 15px; color: var(--color-success); flex: none; }
.trust-row { padding: 0; margin: 0; }

/* Book cover */
.hero__media { display: flex; justify-content: center; perspective: 1600px; }
.book { width: min(78vw, 320px); }
.book__cover {
  position: relative; aspect-ratio: 2 / 3;
  background: var(--color-logo-bg);
  border-radius: 6px 15px 15px 6px;
  padding: clamp(1.3rem, 6%, 2rem);
  display: flex; flex-direction: column; align-items: center; text-align: center;
  box-shadow: var(--shadow-book);
  border-left: 9px solid rgba(28, 25, 23, .18);
  overflow: hidden;
  transform: rotateY(-12deg) rotateX(2deg);
  transition: transform 600ms var(--ease);
}
.book:hover .book__cover { transform: rotateY(-5deg) rotateX(1deg) translateY(-4px); }
.book__cover::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(105deg, rgba(255, 255, 255, .28) 0 22%, transparent 45%);
}
.book__mark { width: 68%; mix-blend-mode: darken; margin-top: 4%; }
.book__title {
  font-family: var(--font-display); font-weight: 700; letter-spacing: .01em;
  font-size: clamp(2rem, 11vw, 2.9rem); line-height: 1; color: #23190F; margin-top: 2%;
}
.book__rule { width: 42px; height: 2px; background: rgba(35, 25, 15, .55); margin: 5% 0; }
.book__sub { font-size: .82rem; letter-spacing: .13em; text-transform: uppercase; color: #3B2C1B; line-height: 1.6; }
.book__author {
  margin-top: auto; font-family: var(--font-display); font-size: 1rem; letter-spacing: .04em; color: #23190F;
}
.book__badge {
  position: absolute; top: 1rem; right: 1rem;
  background: var(--color-ink); color: #F5EFE3; font-size: .62rem; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase; padding: .35rem .6rem; border-radius: var(--radius-pill);
}

@media (min-width: 900px) {
  .hero { padding-block: var(--space-3xl) var(--space-4xl); }
  .hero__grid { grid-template-columns: 1.05fr .95fr; gap: var(--space-3xl); }
  .hero__media { justify-content: flex-end; }
  .book { width: min(34vw, 360px); }
}

/* ---------- 7. Trust bar ------------------------------------------------- */
.trustbar { border-block: 1px solid var(--color-border); background: rgba(255, 253, 249, .6); }
.trustbar ul {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  list-style: none; padding: 0; margin: 0; background: var(--color-border);
}
.trustbar li {
  background: var(--color-paper); padding: 1.1rem .9rem; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: .3rem;
}
.trustbar b { font-size: .95rem; font-weight: 600; }
.trustbar small { font-size: .76rem; color: var(--color-ink-muted); }
@media (min-width: 720px) { .trustbar ul { grid-template-columns: repeat(4, 1fr); } }

/* ---------- 8. Cards ----------------------------------------------------- */
.grid { display: grid; gap: var(--space-md); }
@media (min-width: 640px) { .grid--2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px) { .grid--4 { grid-template-columns: repeat(4, 1fr); gap: var(--space-lg); } }

.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.card__icon {
  width: 44px; height: 44px; border-radius: 12px;
  display: grid; place-items: center; margin-bottom: var(--space-md);
  background: var(--color-paper-deep); color: var(--color-accent-deep);
}
.card__icon svg { width: 22px; height: 22px; }
.card h3 { margin-bottom: .4rem; }
.card p { color: var(--color-ink-muted); font-size: .95rem; }

/* ---------- 9. Chapters -------------------------------------------------- */
.parts { display: grid; gap: var(--space-xl); margin-top: var(--space-2xl); }
@media (min-width: 860px) { .parts { grid-template-columns: repeat(2, 1fr); gap: var(--space-2xl); } }

.part {
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-lg);
}
.part__label {
  font-size: .72rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: var(--color-accent-deep); margin-bottom: .4rem;
}
.part__title { font-family: var(--font-display); font-size: 1.3rem; margin-bottom: var(--space-md); }
.chapters { list-style: none; padding: 0; margin: 0; }
.chapters li {
  display: flex; gap: .85rem; align-items: baseline;
  padding: .72rem 0; border-bottom: 1px solid var(--color-border);
}
.chapters li:last-child { border-bottom: 0; }
.chapters .num {
  font-family: var(--font-display); font-size: .82rem; font-weight: 700; color: var(--color-accent);
  min-width: 1.6rem; flex: none;
}
.chapters .name { font-size: .96rem; }

/* ---------- 10. Excerpt — a real page from Chapter 3 --------------------- */
.bookpage {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: clamp(1.6rem, 5vw, 3.25rem);
  max-width: 46rem;
  margin: 0 auto;
}
.bookpage__meta {
  display: flex; justify-content: space-between; gap: 1rem;
  font-size: .72rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: var(--color-ink-muted);
  padding-bottom: var(--space-sm); border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-xl);
}
.bookpage__epigraph {
  font-family: var(--font-display); font-style: italic;
  font-size: clamp(1.05rem, 3.2vw, 1.3rem); line-height: 1.6; color: var(--color-ink);
  border-left: 3px solid var(--color-accent); padding-left: var(--space-md);
  margin: 0 0 var(--space-xl);
}
.bookpage__heading {
  font-family: var(--font-body); font-size: .76rem; font-weight: 700;
  letter-spacing: .15em; text-transform: uppercase; color: var(--color-accent);
  margin: var(--space-xl) 0 var(--space-md);
}
.bookpage p { color: var(--color-ink-muted); line-height: 1.85; margin: 0 0 var(--space-md); }
.bookpage p:last-child { margin-bottom: 0; }
.bookpage p.bookpage__end {
  text-align: center; letter-spacing: .6em; color: var(--color-accent);
  margin: var(--space-xl) 0 var(--space-sm);
}
.bookpage p.bookpage__more { text-align: center; font-size: .95rem; font-style: italic; margin-bottom: 0; }
.bookpage__cta { text-align: center; margin-top: var(--space-xl); }
@media (max-width: 560px) {
  .bookpage__meta { font-size: .66rem; letter-spacing: .12em; }
}

/* ---------- 11. Author --------------------------------------------------- */
.author { display: grid; gap: var(--space-xl); align-items: center; }
@media (min-width: 860px) { .author { grid-template-columns: 340px 1fr; gap: var(--space-3xl); } }
.author__photo {
  width: min(72vw, 340px); margin-inline: auto;
  border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--color-border); box-shadow: var(--shadow-lg);
  background: var(--color-paper-deep);
}
.author__photo img { width: 100%; filter: contrast(1.02); }
.author h2 { margin-bottom: var(--space-md); }
.author p { color: var(--color-ink-muted); margin-bottom: var(--space-md); }
.author p:first-of-type::first-letter {
  font-family: var(--font-display); font-size: 3.1rem; float: left; line-height: .82;
  padding: .12em .12em 0 0; color: var(--color-accent-deep);
}
.author__sign { font-family: var(--font-display); font-style: italic; font-size: 1.5rem; color: var(--color-ink); }

/* ---------- 12. Quote band ---------------------------------------------- */
.quote-band { text-align: center; }
.quote-band blockquote {
  font-family: var(--font-display); font-style: italic;
  font-size: clamp(1.35rem, 4.8vw, 2.1rem); line-height: 1.4; max-width: 22ch; margin-inline: auto;
  color: #FFFDF9;
}
.quote-band .rule { width: 54px; height: 2px; background: #D8B25E; margin: var(--space-lg) auto; }
.quote-band cite { font-style: normal; font-size: .82rem; letter-spacing: .16em; text-transform: uppercase; color: #CBBFA9; }

/* ---------- 13. Pricing -------------------------------------------------- */
.plans { display: grid; gap: var(--space-lg); max-width: 480px; margin-inline: auto; }
.plan {
  position: relative; background: var(--color-card);
  border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg); box-shadow: var(--shadow-lg);
}
.plan__flag {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--color-ink); color: #F5EFE3; font-size: .66rem; font-weight: 700;
  letter-spacing: .14em; text-transform: uppercase; padding: .35rem .8rem; border-radius: var(--radius-pill);
  white-space: nowrap;
}
.plan__name { font-family: var(--font-display); font-size: 1.3rem; margin-bottom: .25rem; }
.plan__price { display: flex; align-items: baseline; gap: .5rem; margin: var(--space-md) 0 var(--space-xs); }
.plan__price b { font-family: var(--font-display); font-size: 3rem; line-height: 1; }
.plan__price span { color: var(--color-ink-muted); font-size: .9rem; }
.plan__sub { color: var(--color-ink-muted); font-size: .9rem; margin-bottom: var(--space-lg); }
.plan__features { list-style: none; padding: 0; margin: 0 0 var(--space-lg); display: grid; gap: .7rem; }
.plan__features li { display: flex; gap: .65rem; align-items: flex-start; font-size: .95rem; }
.plan__features svg { width: 19px; height: 19px; color: var(--color-success); flex: none; margin-top: .2rem; }
.plan__fineprint { text-align: center; font-size: .8rem; color: var(--color-ink-muted); margin-top: var(--space-md); }
.plan__fineprint svg { width: 14px; height: 14px; display: inline; vertical-align: -2px; }

/* ---------- 14. FAQ ------------------------------------------------------ */
.faq { max-width: 720px; margin-inline: auto; margin-top: var(--space-2xl); }
.faq details {
  border-bottom: 1px solid var(--color-border);
}
.faq summary {
  list-style: none; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  padding: 1.15rem .25rem; font-weight: 600; font-size: 1.02rem;
  min-height: 48px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; flex: none; width: 11px; height: 11px;
  border-right: 2px solid var(--color-ink-muted); border-bottom: 2px solid var(--color-ink-muted);
  transform: rotate(45deg); transition: transform var(--dur) var(--ease); margin-left: auto;
}
.faq details[open] summary::after { transform: rotate(-135deg); }
.faq p { padding: 0 .25rem 1.25rem; color: var(--color-ink-muted); font-size: .95rem; max-width: 62ch; }

/* ---------- 15. Final CTA ------------------------------------------------ */
.final-cta { text-align: center; }
.final-cta .book { width: min(46vw, 190px); margin: 0 auto var(--space-xl); }
.final-cta .book__cover { transform: none; box-shadow: var(--shadow-lg); }
.final-cta h2 { margin-bottom: var(--space-md); }
.final-cta p { max-width: 48ch; margin-inline: auto; color: var(--color-ink-muted); margin-bottom: var(--space-xl); }

/* ---------- 16. Footer --------------------------------------------------- */
.site-footer { background: var(--color-ink); color: #CBBFA9; padding-block: var(--space-2xl) calc(var(--space-2xl) + var(--safe-b)); }
.site-footer a { color: #E9E2D4; text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.footer__grid { display: grid; gap: var(--space-xl); }
@media (min-width: 720px) { .footer__grid { grid-template-columns: 1.4fr 1fr 1fr; } }
.footer__brand { display: flex; align-items: center; gap: .7rem; margin-bottom: var(--space-md); }
.footer__brand img { width: 40px; height: 40px; border-radius: 10px; }
.footer__brand b { font-family: var(--font-display); color: #FFFDF9; font-size: 1.1rem; }
.footer__col h4 { font-family: var(--font-body); font-size: .74rem; letter-spacing: .16em; text-transform: uppercase; color: #9A8F7C; margin-bottom: var(--space-md); }
.footer__col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: .6rem; font-size: .93rem; }
.footer__bottom {
  margin-top: var(--space-2xl); padding-top: var(--space-lg); border-top: 1px solid rgba(237, 229, 214, .16);
  display: flex; flex-direction: column; gap: .5rem; font-size: .82rem; color: #9A8F7C;
}
@media (min-width: 720px) { .footer__bottom { flex-direction: row; justify-content: space-between; align-items: center; } }

/* ---------- 17. Sticky mobile buy bar ------------------------------------ */
.buybar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 95;
  padding: .7rem max(1rem, var(--safe-l)) calc(.7rem + var(--safe-b)) max(1rem, var(--safe-r));
  background: rgba(247, 243, 234, .9);
  -webkit-backdrop-filter: blur(14px) saturate(180%);
  backdrop-filter: blur(14px) saturate(180%);
  border-top: 1px solid var(--color-border);
  display: flex; align-items: center; gap: .85rem;
  transform: translateY(115%);
  transition: transform 320ms var(--ease);
}
.buybar.is-visible { transform: translateY(0); }
.buybar__meta { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }
.buybar__meta b { font-size: .95rem; }
.buybar__meta span { font-size: .74rem; color: var(--color-ink-muted); white-space: nowrap; }
.buybar .btn { margin-left: auto; flex: none; }
@media (min-width: 900px) { .buybar { display: none; } }

/* ---------- 18. Reveal on scroll ----------------------------------------- */
.js .reveal { opacity: 0; transform: translateY(18px); }
.js .reveal.is-in {
  opacity: 1; transform: none;
  transition: opacity 600ms var(--ease), transform 600ms var(--ease);
}

/* ---------- 19. Motion / print / a11y ------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important; animation-iteration-count: 1 !important;
    transition-duration: .001ms !important; scroll-behavior: auto !important;
  }
  .reveal, .js .reveal { opacity: 1; transform: none; }
  .book__cover { transform: none; }
}

@media print {
  .site-header, .buybar, .mobile-nav, .final-cta, .site-footer { display: none; }
  body { background: #fff; }
}

/* ---------- 20. Inline notices ------------------------------------------- */
.checkout-error {
  margin: 0 0 var(--space-lg);
  padding: .85rem 1rem;
  background: #FEF2F2; color: var(--color-danger);
  border: 1px solid #FECACA; border-radius: var(--radius-sm);
  font-size: .9rem;
}

/* ---------- 21. Thank-you / download page -------------------------------- */
.thanks { padding-block: var(--space-2xl) var(--space-3xl); }
.thanks__card {
  max-width: 620px; margin-inline: auto; text-align: center;
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-2xl) var(--space-lg);
  box-shadow: var(--shadow-lg);
}
.thanks__tick {
  width: 62px; height: 62px; border-radius: 50%; margin: 0 auto var(--space-lg);
  display: grid; place-items: center; background: #ECFCCB; color: #3F6212;
}
.thanks__tick svg { width: 30px; height: 30px; }
.thanks h1 { font-size: clamp(1.9rem, 7vw, 2.6rem); margin-bottom: .5rem; }
.thanks__lede { color: var(--color-ink-muted); margin-bottom: var(--space-xl); }
.downloads { display: grid; gap: .75rem; text-align: left; }
.download {
  display: flex; align-items: center; gap: 1rem;
  padding: 1rem 1.15rem; border: 1px solid var(--color-border);
  border-radius: var(--radius); background: var(--color-paper);
  text-decoration: none; color: inherit;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  min-height: 64px;
}
.download:hover { border-color: var(--color-accent); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.download__icon {
  width: 44px; height: 44px; flex: none; border-radius: 12px; display: grid; place-items: center;
  background: var(--color-logo-bg); color: #3B2C1B;
}
.download__icon svg { width: 22px; height: 22px; }
.download__meta { display: flex; flex-direction: column; min-width: 0; }
.download__meta b { font-size: .98rem; }
.download__meta span { font-size: .8rem; color: var(--color-ink-muted); }
.download__tag {
  margin-left: auto; flex: none; font-size: .68rem; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: var(--color-accent-deep);
  background: var(--color-paper-deep); padding: .3rem .55rem; border-radius: var(--radius-pill);
}
.download--soon { opacity: .72; pointer-events: none; }
.thanks__note { margin-top: var(--space-xl); font-size: .88rem; color: var(--color-ink-muted); }
.thanks__help { margin-top: var(--space-lg); font-size: .9rem; }
.thanks__spinner { display: inline-block; width: 18px; height: 18px; border: 2px solid var(--color-border-strong); border-top-color: var(--color-accent); border-radius: 50%; animation: spin .8s linear infinite; vertical-align: -3px; margin-right: .5rem; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- 22. Prose (legal pages) -------------------------------------- */
.page-head { padding-block: var(--space-2xl) var(--space-lg); }
.page-head h1 { margin-top: .5rem; }
.prose { max-width: 68ch; margin-inline: auto; padding-bottom: var(--space-3xl); }
.prose h2 { font-size: 1.35rem; margin: var(--space-xl) 0 .6rem; }
.prose h2:first-child { margin-top: 0; }
.prose p, .prose li { color: var(--color-ink-soft); font-size: .98rem; }
.prose p { margin-bottom: var(--space-md); }
.prose ul { padding-left: 1.2rem; margin-bottom: var(--space-md); display: grid; gap: .4rem; }
.prose .updated { font-size: .85rem; color: var(--color-ink-muted); }
.prose .callout {
  background: var(--color-paper-deep); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: var(--space-lg);
}