:root {
  --book-bg: #F8F9FA;
  --book-ink: #1A2B4C;
  --book-teal: #2EC4B6;
  --book-blue: #3A86F0;
  --book-orange: #FF9F1C;
  --book-alert: #E63946;
  --book-text: #2D3436;
  --ink-04: rgb(26 43 76 / .04);
  --ink-06: rgb(26 43 76 / .06);
  --ink-08: rgb(26 43 76 / .08);
  --ink-12: rgb(26 43 76 / .12);
  --ink-14: rgb(26 43 76 / .14);
  --ink-24: rgb(26 43 76 / .24);
  --teal-08: rgb(46 196 182 / .08);
  --teal-10: rgb(46 196 182 / .10);
  --teal-16: rgb(46 196 182 / .16);
  --teal-40: rgb(46 196 182 / .40);
  --blue-08: rgb(58 134 240 / .08);
  --blue-10: rgb(58 134 240 / .10);
  --blue-16: rgb(58 134 240 / .16);
  --orange-10: rgb(255 159 28 / .10);
  --orange-16: rgb(255 159 28 / .16);
  --alert-10: rgb(230 57 70 / .10);
  --font-book: "Nunito", ui-rounded, "Avenir Next", "Segoe UI", system-ui, sans-serif;
  --content-max: 72rem;
  --reading-max: 48rem;
  --gutter: clamp(1.25rem, 3vw, 3.5rem);
  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --radius-sm: .5rem;
  --radius-md: .75rem;
  --radius-lg: 1.25rem;
  --radius-pill: 999px;
  --shadow-card: 0 .5rem 1.5rem rgb(26 43 76 / .10);
  --shadow-book: 0 1rem 2.5rem rgb(26 43 76 / .16);
  --shadow-floating: 0 1rem 3rem rgb(26 43 76 / .12);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 5rem; }
body {
  margin: 0;
  background: var(--book-bg);
  color: var(--book-text);
  font-family: var(--font-book);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body.nav-open { overflow: hidden; }
a { color: var(--book-blue); }
img { display: block; max-width: 100%; }
button, a { font: inherit; }
button { color: inherit; }
::selection { background: var(--teal-16); color: var(--book-ink); }

.container { width: min(100% - 2 * var(--gutter), var(--content-max)); margin-inline: auto; }
.section-shell { position: relative; padding: clamp(4.5rem, 9vw, 8rem) 0; overflow: hidden; }
.section-soft { background: var(--ink-04); }
.section-dark { background: var(--book-ink); color: var(--book-bg); }
.narrow-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(2rem, 7vw, 8rem); align-items: start; }

.skip-link {
  position: fixed; left: 1rem; top: -4rem; z-index: 100;
  padding: .7rem 1rem; border-radius: var(--radius-sm);
  background: var(--book-ink); color: var(--book-bg); font-weight: 800;
}
.skip-link:focus { top: 1rem; }
.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; }

.site-header {
  position: sticky; top: 0; z-index: 20;
  border-bottom: 1px solid transparent;
  background: rgb(248 249 250 / .90);
  backdrop-filter: blur(14px);
  transition: border-color .2s ease, box-shadow .2s ease;
}
.site-header.is-scrolled { border-color: var(--ink-12); box-shadow: 0 .25rem 1.5rem rgb(26 43 76 / .06); }
.header-inner { display: flex; min-height: 4.5rem; align-items: center; justify-content: space-between; gap: 1.5rem; }
.brand { display: inline-flex; align-items: center; gap: .7rem; color: var(--book-ink); font-weight: 800; text-decoration: none; letter-spacing: -.02em; }
.brand-mark { display: inline-grid; width: 2.2rem; height: 2.2rem; place-items: center; }
.brand-mark svg { width: 100%; height: 100%; }
.site-nav { display: flex; align-items: center; gap: clamp(.8rem, 2vw, 1.6rem); }
.site-nav a { color: var(--book-text); font-size: .92rem; font-weight: 700; text-decoration: none; }
.site-nav a:hover { color: var(--book-blue); }
.site-nav .nav-cta { padding: .58rem 1rem; border-radius: var(--radius-pill); background: var(--book-teal); color: var(--book-ink); }
.nav-toggle { display: none; border: 0; background: transparent; cursor: pointer; padding: .5rem; }
.nav-toggle span:not(.sr-only) { display: block; width: 1.45rem; height: 2px; margin: .25rem; border-radius: var(--radius-pill); background: var(--book-ink); }

.eyebrow { display: flex; align-items: center; gap: .55rem; margin: 0 0 1rem; color: var(--book-blue); font-size: .78rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.eyebrow-dot { width: .55rem; height: .55rem; border-radius: 50%; background: var(--book-teal); }
.eyebrow-light { color: var(--book-teal); }
h1, h2, h3 { color: var(--book-ink); line-height: 1.12; }
h1 { max-width: 13ch; margin: 0; font-size: clamp(3.1rem, 8vw, 6.9rem); font-weight: 800; letter-spacing: -.065em; }
h1 em { display: block; color: var(--book-teal); font-style: normal; font-weight: 700; }
h2 { margin: 0 0 1.1rem; font-size: clamp(2.05rem, 4vw, 3.8rem); letter-spacing: -.045em; }
h3 { margin: 0; font-size: 1.2rem; }
p { max-width: var(--reading-max); margin: 0 0 1rem; }
.section-heading > p:last-child { max-width: 42rem; }
.section-heading.centered { text-align: center; }
.section-heading.centered .eyebrow { justify-content: center; }
.section-heading.centered > p:last-child { margin-inline: auto; }

.hero { min-height: min(52rem, calc(100svh - 4.5rem)); display: grid; align-items: center; padding-top: clamp(3rem, 8vw, 7rem); padding-bottom: clamp(3rem, 8vw, 7rem); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(18rem, .95fr); gap: clamp(2.5rem, 8vw, 8rem); align-items: center; }
.hero-copy { position: relative; z-index: 2; }
.hero-subtitle { max-width: 35rem; margin: 1.6rem 0 .75rem; color: var(--book-ink); font-size: clamp(1.2rem, 2vw, 1.55rem); font-weight: 700; line-height: 1.35; }
.hero-lede { max-width: 34rem; font-size: 1.08rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; align-items: center; margin-top: 1.7rem; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .55rem; min-height: 3.2rem; padding: .7rem 1.25rem; border: 2px solid transparent; border-radius: var(--radius-pill); font-weight: 800; text-align: center; text-decoration: none; transition: transform .16s ease, box-shadow .16s ease, background .16s ease, color .16s ease; }
.button:hover { transform: translateY(-2px); box-shadow: var(--shadow-card); }
.button-primary { background: var(--book-teal); border-color: var(--book-teal); color: var(--book-ink); }
.button-primary:hover { background: var(--book-ink); border-color: var(--book-ink); color: var(--book-teal); }
.button-secondary { background: transparent; border-color: var(--book-blue); color: var(--book-blue); }
.button-secondary:hover { background: var(--book-blue); color: var(--book-bg); }
.hero-note { margin-top: .8rem; color: var(--book-text); font-size: .8rem; }
.hero-product { position: relative; justify-self: center; width: min(100%, 23rem); }
.book-cover { position: relative; z-index: 2; display: block; width: 100%; height: auto; aspect-ratio: 1065 / 1477; object-fit: contain; border: 1px solid var(--ink-12); border-radius: var(--radius-md); box-shadow: var(--shadow-book); }
.cover-shadow { position: absolute; z-index: 1; inset: 9% -5% -5% 12%; border-radius: 50%; background: var(--teal-16); filter: blur(1.5rem); transform: rotate(-5deg); }

.hero-path { position: absolute; inset: 0; pointer-events: none; opacity: .8; }
.path { position: absolute; display: block; width: 65%; height: 14rem; border-top: 3px dotted; border-radius: 50%; transform: rotate(-13deg); }
.path-teal { left: -12%; bottom: 5%; border-color: var(--teal-40); }
.path-blue { left: 2%; bottom: 10%; border-color: var(--blue-16); transform: rotate(-9deg); }
.path-orange { right: -22%; bottom: 17%; border-color: var(--orange-16); transform: rotate(9deg); }
.path-dot { position: absolute; width: .7rem; height: .7rem; border-radius: 50%; }
.dot-one { left: 18%; bottom: 17%; background: var(--book-teal); }.dot-two { right: 29%; bottom: 30%; background: var(--book-blue); }

.intro-copy { padding-top: .5rem; }
.highlight-line { margin-top: 1.6rem; padding: 1rem 1.2rem; border-left: 4px solid var(--book-teal); border-radius: 0 var(--radius-md) var(--radius-md) 0; background: var(--teal-10); color: var(--book-ink); font-weight: 700; }
.promise-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: clamp(3rem, 7vw, 6rem); }
.promise-card { padding: 1.5rem; border: 1px solid var(--ink-14); border-top: 4px solid var(--book-teal); border-radius: var(--radius-lg); background: var(--book-bg); box-shadow: var(--shadow-card); }
.promise-card:nth-child(2) { border-top-color: var(--book-blue); }.promise-card:nth-child(3) { border-top-color: var(--book-orange); }
.promise-card p { margin-top: .5rem; font-size: .94rem; }
.icon { display: grid; width: 2.7rem; height: 2.7rem; margin-bottom: 1rem; place-items: center; border-radius: 50%; font-size: 1.65rem; font-weight: 800; }.icon-teal { background: var(--teal-16); color: var(--book-teal); }.icon-blue { background: var(--blue-16); color: var(--book-blue); }.icon-orange { background: var(--orange-16); color: var(--book-orange); }

.chapter-filters { display: flex; flex-wrap: wrap; justify-content: center; gap: .55rem; margin: 2rem auto; }
.filter-button { padding: .55rem .95rem; border: 1px solid var(--ink-14); border-radius: var(--radius-pill); background: var(--book-bg); color: var(--book-ink); cursor: pointer; font-size: .9rem; font-weight: 700; }
.filter-button:hover, .filter-button.is-active { border-color: var(--book-teal); background: var(--teal-16); }
.chapter-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.chapter-card { position: relative; min-height: 14rem; padding: 1.45rem; border: 1px solid var(--ink-14); border-top: 4px solid var(--book-blue); border-radius: var(--radius-lg); background: var(--book-bg); box-shadow: var(--shadow-card); transition: opacity .2s ease, transform .2s ease; }
.chapter-card[data-group="protect"] { border-top-color: var(--book-alert); }.chapter-card[data-group="create"] { border-top-color: var(--book-orange); }
.chapter-card.is-hidden { display: none; }
.chapter-number { display: block; margin-bottom: .8rem; color: var(--book-blue); font-size: .76rem; font-weight: 800; letter-spacing: .1em; }.chapter-card[data-group="protect"] .chapter-number { color: var(--book-alert); }.chapter-card[data-group="create"] .chapter-number { color: var(--book-orange); }
.chapter-card p { margin: .55rem 0 1.2rem; font-size: .92rem; }.chapter-tag { position: absolute; bottom: 1.25rem; color: var(--book-text); font-size: .72rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }

.preview-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 3rem; }
.book-page { margin: 0; }.page-frame { overflow: hidden; border: 1px solid var(--ink-14); border-radius: var(--radius-lg); background: var(--book-bg); box-shadow: var(--shadow-card); }.page-frame img { width: 100%; height: auto; aspect-ratio: 827 / 1070; object-fit: contain; transition: transform .35s ease; }.book-page:hover .page-frame img { transform: scale(1.025); }
.book-page figcaption { display: grid; gap: .35rem; padding: 1rem .2rem 0; }.book-page figcaption span { color: var(--book-blue); font-size: .75rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }.book-page figcaption strong { color: var(--book-ink); font-size: 1.15rem; line-height: 1.25; }.book-page figcaption small { font-size: .88rem; }
.quote-card { max-width: 52rem; margin: 4rem auto 0; padding: clamp(1.5rem, 4vw, 3rem); border-left: 5px solid var(--book-orange); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; background: var(--orange-10); }.quote-card p { margin: 0; color: var(--book-ink); font-size: clamp(1.25rem, 2.5vw, 2rem); font-weight: 700; line-height: 1.3; }.quote-card cite { display: block; margin-top: 1rem; color: var(--book-text); font-size: .85rem; font-style: normal; }

.method-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(2.5rem, 8vw, 8rem); align-items: center; }.method-steps { padding: 1.5rem; border: 1px solid var(--ink-14); border-radius: var(--radius-lg); background: var(--book-bg); box-shadow: var(--shadow-card); }.method-steps ol { list-style: none; margin: 0; padding: 0; }.method-steps li { display: grid; grid-template-columns: 2.6rem 1fr; gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--ink-12); }.method-steps li:last-child { border-bottom: 0; }.method-steps li > span { display: grid; width: 2.3rem; height: 2.3rem; place-items: center; border-radius: 50%; background: var(--teal-16); color: var(--book-ink); font-size: .75rem; font-weight: 800; }.method-steps strong { color: var(--book-ink); }.method-steps p { margin: .2rem 0 0; font-size: .92rem; }

.edition-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; max-width: 58rem; margin: 3rem auto 0; }.edition-card { display: flex; flex-direction: column; align-items: flex-start; padding: clamp(1.5rem, 4vw, 2.5rem); border: 1px solid var(--ink-14); border-top: 5px solid var(--book-orange); border-radius: var(--radius-lg); background: var(--book-bg); box-shadow: var(--shadow-card); }.pdf-card { border-top-color: var(--book-blue); }.edition-top { display: flex; align-items: center; gap: .7rem; margin-bottom: 1rem; }.edition-icon { display: grid; min-width: 2.6rem; height: 2.6rem; padding: .2rem; place-items: center; border-radius: var(--radius-sm); background: var(--orange-16); color: var(--book-ink); font-size: .85rem; font-weight: 800; }.pdf-card .edition-icon { background: var(--blue-16); }.edition-label { color: var(--book-text); font-size: .75rem; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; }.edition-card h3 { font-size: 1.6rem; }.edition-card p { margin: .75rem 0 1.5rem; }.edition-card .button { margin-top: auto; }.edition-card small { display: block; margin-top: .9rem; font-size: .78rem; }

.author-grid { display: grid; grid-template-columns: .6fr 1.4fr; gap: clamp(2rem, 7vw, 8rem); align-items: center; }.author h2 { color: var(--book-bg); }.author-copy p:not(.eyebrow) { color: var(--book-bg); }.author-sign { display: flex; align-items: center; gap: 1rem; color: var(--book-teal); font-size: 1.3rem; font-weight: 800; line-height: 1.1; }.author-initial { display: grid; width: 5rem; height: 5rem; place-items: center; border: 2px solid var(--book-teal); border-radius: 50%; font-size: 2.6rem; }

.faq-grid { display: grid; grid-template-columns: .7fr 1.3fr; gap: clamp(2rem, 8vw, 8rem); }.faq-list details { border-top: 1px solid var(--ink-14); }.faq-list details:last-child { border-bottom: 1px solid var(--ink-14); }.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.15rem 0; color: var(--book-ink); cursor: pointer; font-weight: 800; list-style: none; }.faq-list summary::-webkit-details-marker { display: none; }.faq-list summary::after { content: "+"; color: var(--book-teal); font-size: 1.5rem; }.faq-list details[open] summary::after { content: "–"; }.faq-list details p { padding: 0 2rem 1.2rem 0; margin: 0; font-size: .95rem; }

.final-card { position: relative; overflow: hidden; padding: clamp(2rem, 7vw, 5rem); border-radius: var(--radius-lg); background: var(--teal-10); text-align: center; }.final-card .eyebrow { justify-content: center; }.final-card h2 { max-width: 13ch; margin-inline: auto; }.final-card > p:not(.eyebrow) { margin-inline: auto; }.centered-actions { justify-content: center; }.final-spark { position: absolute; top: 1.5rem; right: 10%; color: var(--book-orange); font-size: 2rem; }
.site-footer { padding: 2rem 0; border-top: 1px solid var(--ink-14); }.footer-inner { display: flex; justify-content: space-between; gap: 1rem; }.footer-inner strong, .footer-inner span { display: block; color: var(--book-ink); }.footer-inner span { margin-top: .2rem; color: var(--book-text); font-size: .8rem; }.footer-links { display: flex; gap: 1rem; align-items: center; }.footer-links a { font-size: .82rem; font-weight: 700; text-decoration: none; }

.reveal { opacity: 0; transform: translateY(1.1rem); transition: opacity .65s ease, transform .65s ease; }.reveal.is-visible { opacity: 1; transform: none; }.reveal-delay { transition-delay: .08s; }.reveal-delay-2 { transition-delay: .16s; }
:focus-visible { outline: 3px solid var(--book-blue); outline-offset: 3px; border-radius: var(--radius-sm); }

@media (max-width: 56rem) {
  .nav-toggle { display: block; }
  .site-nav { position: fixed; inset: 4.5rem 0 auto; display: grid; gap: 0; padding: .7rem var(--gutter) 1.2rem; border-bottom: 1px solid var(--ink-14); background: var(--book-bg); box-shadow: var(--shadow-floating); transform: translateY(-140%); transition: transform .25s ease; }
  .site-nav.is-open { transform: translateY(0); }.site-nav a { padding: .7rem 0; }.site-nav .nav-cta { padding: .7rem 1rem; text-align: center; }
  .hero-grid, .method-grid, .narrow-grid, .faq-grid { grid-template-columns: 1fr; gap: 2.5rem; }.hero { min-height: auto; }.hero-copy { max-width: 44rem; }.hero-product { width: min(72vw, 21rem); }.promise-grid, .chapter-grid { grid-template-columns: repeat(2, 1fr); }.author-grid { grid-template-columns: 1fr; gap: 2.5rem; }
}
@media (max-width: 40rem) {
  body { font-size: 1rem; }.section-shell { padding: 4rem 0; } h1 { font-size: clamp(3rem, 15vw, 4.8rem); }.hero-actions, .button { width: 100%; }.hero-product { width: min(82vw, 20rem); }.promise-grid, .chapter-grid, .preview-grid, .edition-grid { grid-template-columns: 1fr; }.chapter-card { min-height: 12rem; }.footer-inner { display: grid; }.footer-links { flex-wrap: wrap; }.path { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }.reveal { opacity: 1; transform: none; transition: none; }.button, .page-frame img { transition: none; }
}