:root {
  --ink: #252f38;
  --cherry: #e43f53;
  --salmon: #f16e77;
  --mustard: #d89d53;
  --cream: #f6f0e5;
  --paper: #fffdf8;
  --ink-soft: #40515f;
  --line-light: rgba(246, 240, 229, 0.22);
  --line-dark: rgba(37, 47, 56, 0.16);
  --display: "Montserrat", Arial, sans-serif;
  --body: "Lato", Arial, sans-serif;
  --shell: min(1180px, calc(100vw - 64px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--cream); font-family: var(--body); font-size: 16px; line-height: 1.55; }
body, button, a { -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; }
button { font: inherit; }

.shell { width: var(--shell); margin: 0 auto; }
.dark-section { color: var(--cream); background: var(--ink); }
.section-cream { background: var(--cream); }
.section-light { background: var(--paper); }
.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: fixed; z-index: 100; top: -80px; left: 24px; padding: 12px 16px; color: var(--cream); background: var(--cherry); font-weight: 700; text-decoration: none; transition: top 150ms ease; }
.skip-link:focus { top: 18px; }

.site-header { position: absolute; z-index: 20; width: 100%; padding: 26px 0; color: var(--cream); }
.nav-shell { display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: inherit; font-family: var(--display); font-size: 9px; font-weight: 600; line-height: 1.05; letter-spacing: 0.04em; text-decoration: none; text-transform: uppercase; }
.brand strong { font-weight: 800; }
.brand__mark { width: 11px; height: 22px; border: 2px solid var(--mustard); border-left-width: 5px; }
.main-nav { display: flex; align-items: center; gap: clamp(18px, 2.4vw, 35px); }
.main-nav a { color: inherit; font-family: var(--display); font-size: 11px; font-weight: 600; letter-spacing: 0.03em; text-decoration: none; }
.main-nav a::after { content: ""; display: block; width: 0; height: 1px; margin-top: 4px; background: var(--mustard); transition: width 180ms ease; }
.main-nav a:hover::after, .main-nav a:focus-visible::after { width: 100%; }
.nav-toggle { display: none; }

.hero { position: relative; min-height: 760px; overflow: hidden; padding: 164px 0 88px; }
.hero::before { content: ""; position: absolute; top: 0; right: 0; width: min(36vw, 530px); height: 100%; background: rgba(0, 0, 0, 0.055); border-left: 1px solid rgba(246, 240, 229, 0.06); }
.hero::after { content: ""; position: absolute; top: 114px; left: 49%; width: 11px; height: 11px; border-radius: 50%; background: var(--salmon); box-shadow: 0 410px 0 var(--mustard); }
.hero__layout { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.75fr); align-items: center; gap: 80px; }
.eyebrow { margin: 0 0 16px; font-family: var(--display); font-size: 10px; font-weight: 700; letter-spacing: 0.13em; line-height: 1.2; text-transform: uppercase; }
.eyebrow span { padding: 0 5px; }
.eyebrow--gold { color: var(--mustard); }
.eyebrow--coral { color: var(--cherry); }
.eyebrow--dark { color: var(--ink); }
.hero__book-name, .hero__author { margin: 0; font-family: var(--display); font-size: 12px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }
.hero__book-name { color: var(--salmon); }
.hero__author { margin-top: 4px; color: rgba(246, 240, 229, 0.62); }
h1, h2, h3 { margin: 0; font-family: var(--display); line-height: 1.02; letter-spacing: -0.042em; }
h1 { max-width: 690px; margin-top: 27px; font-size: clamp(45px, 5.3vw, 78px); font-weight: 800; }
.hero__description { max-width: 565px; margin: 25px 0 0; color: rgba(246, 240, 229, 0.8); font-size: 18px; line-height: 1.55; }
.hero__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-top: 38px; }
.button { display: inline-flex; min-height: 47px; align-items: center; justify-content: center; gap: 9px; padding: 13px 20px; border: 1px solid transparent; font-family: var(--body); font-size: 14px; font-weight: 900; line-height: 1; text-decoration: none; transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease; }
.button:hover:not(.is-disabled) { transform: translateY(-2px); }
.button:focus-visible, .main-nav a:focus-visible, summary:focus-visible, .site-footer a:focus-visible { outline: 3px solid var(--mustard); outline-offset: 4px; }
.button--primary { color: #fff; background: var(--cherry); }
.button--primary:hover:not(.is-disabled) { background: #ee5264; }
.button--ghost { color: var(--cream); border-color: rgba(246, 240, 229, 0.42); }
.button--ghost:hover { border-color: var(--mustard); }
.button--launch { color: var(--ink); background: var(--mustard); }
.button--launch:hover { color: var(--cream); background: var(--salmon); }
.button.is-disabled { cursor: not-allowed; opacity: 0.8; }
.launch-invite { max-width: 420px; margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--line-light); }
.launch-invite .button { min-height: 43px; font-size: 13px; }
.launch-invite p { margin: 10px 0 0; color: rgba(246, 240, 229, 0.72); font-size: 13px; line-height: 1.35; }

.hero__book-stage { position: relative; display: grid; min-height: 510px; place-items: center; }
.book-cover { --book-width: min(100%, 330px); position: relative; z-index: 2; width: var(--book-width); aspect-ratio: 0.71; transform: rotate(-3.5deg); filter: drop-shadow(18px 24px 0 rgba(216, 157, 83, 0.96)) drop-shadow(24px 30px 26px rgba(0, 0, 0, 0.2)); }
.book-cover__spine { position: absolute; z-index: 2; top: 0; bottom: 0; left: -20px; width: 20px; background: var(--cherry); transform: skewY(-34deg) translateY(7px); transform-origin: right top; }
.book-cover__front { display: flex; position: relative; width: 100%; height: 100%; flex-direction: column; padding: 28px 27px 25px; overflow: hidden; color: var(--ink); background: var(--cream); border: 1px solid rgba(37, 47, 56, 0.1); }
.book-cover__front::after { content: ""; position: absolute; right: -21%; bottom: -9%; width: 70%; aspect-ratio: 1; border: 2px solid var(--salmon); border-radius: 50%; opacity: 0.72; }
.book-cover__line { width: 34px; height: 5px; margin-bottom: 22px; background: var(--mustard); }
.book-cover__collection { margin: 0; font-family: var(--display); font-size: 10px; font-weight: 800; line-height: 1.08; letter-spacing: -0.03em; text-transform: uppercase; }
.book-cover__volume { margin: 12px 0 0; color: var(--cherry); font-family: var(--display); font-size: 8px; font-weight: 800; letter-spacing: 0.13em; text-transform: uppercase; }
.book-cover h2 { position: relative; z-index: 1; margin-top: auto; font-size: clamp(34px, 4vw, 53px); font-weight: 800; line-height: 0.88; }
.book-cover h2 em { color: var(--cherry); font-weight: 500; }
.book-cover__by { position: relative; z-index: 1; margin: 20px 0 0; font-family: var(--display); font-size: 9px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }
.book-cover--final { aspect-ratio: 1226 / 1978; background: var(--cover-image) center / cover no-repeat; filter: drop-shadow(18px 24px 0 rgba(216, 157, 83, 0.96)) drop-shadow(24px 30px 26px rgba(0, 0, 0, 0.2)); }
.book-cover--final .book-cover__spine { display: none; }
.book-cover--final .book-cover__front { background: transparent; border: 0; }
.book-cover--final .book-cover__front > * { visibility: hidden; }
.book-cover--final .book-cover__front::after { display: none; }
.book-cover--final ~ .hero__stage-note { display: none; }
.book-shadow { position: absolute; right: 4%; bottom: 7%; width: 65%; height: 11%; border-radius: 50%; background: rgba(0, 0, 0, 0.18); filter: blur(23px); transform: rotate(-5deg); }
.hero__stage-note { position: absolute; z-index: 3; right: -10px; bottom: 19px; max-width: 160px; margin: 0; color: var(--mustard); font-family: var(--display); font-size: 10px; font-weight: 600; line-height: 1.25; text-align: right; text-transform: uppercase; }

.intro { padding: 145px 0; }
.intro__layout { display: grid; grid-template-columns: 80px minmax(0, 1fr) minmax(205px, 0.39fr); align-items: start; gap: 40px; }
.section-marker { display: flex; flex-direction: column; align-items: flex-start; gap: 13px; color: var(--cherry); font-family: var(--display); font-size: 11px; font-weight: 800; }
.section-marker i { width: 1px; height: 105px; background: var(--mustard); }
.intro h2, .audience h2, .author h2, .collection h2, .faq h2, .purchase h2 { max-width: 660px; font-size: clamp(35px, 4.2vw, 57px); font-weight: 800; }
.intro__copy > p:last-child { max-width: 650px; margin: 28px 0 0; color: var(--ink-soft); font-size: 18px; }
.intro__accent { min-height: 250px; margin-top: 42px; padding: 25px; color: var(--cream); background: var(--cherry); transform: rotate(2deg); }
.intro__accent p { margin: 0; font-family: var(--display); font-size: 19px; font-weight: 700; line-height: 1.12; letter-spacing: -0.04em; }
.intro__accent span { display: block; margin-top: 50px; font-family: var(--display); font-size: 9px; font-weight: 700; letter-spacing: 0.06em; line-height: 1.4; text-transform: uppercase; }

.chapters { position: relative; overflow: hidden; padding: 130px 0 142px; }
.chapters::after { content: ""; position: absolute; right: -9vw; bottom: -10vw; width: 37vw; aspect-ratio: 1; border: 1px solid rgba(216, 157, 83, 0.38); border-radius: 50%; }
.section-heading { position: relative; z-index: 1; display: flex; align-items: end; justify-content: space-between; gap: 50px; margin-bottom: 60px; }
.section-heading h2 { max-width: 760px; font-size: clamp(34px, 4vw, 57px); font-weight: 800; }
.section-heading > p { max-width: 235px; margin: 0 0 5px; color: rgba(246, 240, 229, 0.66); }
.chapters__grid { display: grid; position: relative; z-index: 1; grid-template-columns: repeat(6, 1fr); gap: 14px; padding: 0; margin: 0; list-style: none; }
.chapters__cta { display: flex; justify-content: flex-end; margin-top: 34px; }
.chapter-card { min-height: 224px; padding: 23px 22px; color: var(--ink); background: var(--paper); }
.chapter-card:nth-child(1), .chapter-card:nth-child(2), .chapter-card:nth-child(3) { grid-column: span 2; }
.chapter-card:nth-child(4) { grid-column: 1 / span 3; }
.chapter-card:nth-child(5) { grid-column: 4 / span 3; }
.chapter-card__number { display: block; color: var(--cherry); font-family: var(--display); font-size: 11px; font-weight: 800; letter-spacing: 0.1em; }
.chapter-card h3 { max-width: 245px; margin-top: 35px; font-size: 21px; font-weight: 800; }
.chapter-card p { max-width: 285px; margin: 14px 0 0; color: var(--ink-soft); font-size: 14px; line-height: 1.4; }
.chapter-card--featured { color: var(--cream); background: var(--salmon); }
.chapter-card--featured .chapter-card__number { color: var(--ink); }
.chapter-card--featured p { color: rgba(37, 47, 56, 0.85); }

.audience { padding: 145px 0; }
.audience__layout { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(430px, 1.2fr); gap: 10vw; }
.audience__headline { position: sticky; top: 40px; align-self: start; }
.audience__list { padding: 0; margin: 0; list-style: none; border-top: 1px solid var(--line-dark); }
.audience__list li { display: grid; grid-template-columns: 46px 1fr; gap: 17px; padding: 24px 0 26px; border-bottom: 1px solid var(--line-dark); }
.audience__list span { color: var(--cherry); font-family: var(--display); font-size: 11px; font-weight: 800; }
.audience__list h3 { font-size: 19px; font-weight: 800; }
.audience__list p { margin: 9px 0 0; color: var(--ink-soft); }

.author { padding: 145px 0; overflow: hidden; }
.author__layout { display: grid; grid-template-columns: minmax(275px, 0.82fr) minmax(0, 1fr); align-items: center; gap: clamp(50px, 9vw, 132px); }
.author__photo-wrap { position: relative; width: min(100%, 420px); margin-left: 28px; }
.author__frame { position: absolute; z-index: 0; top: 23px; left: -27px; width: 100%; height: 100%; border: 8px solid var(--mustard); }
.author__photo-viewport { position: relative; z-index: 1; aspect-ratio: 0.82; overflow: hidden; }
.author__photo { width: 100%; height: 100%; object-fit: cover; object-position: center center; transform: scale(1.12); transform-origin: center bottom; }
.author__copy > p:not(.eyebrow) { max-width: 655px; margin: 25px 0 0; color: var(--ink-soft); font-size: 17px; }
.author__credential { display: inline-block; margin-top: 29px; padding-top: 11px; border-top: 3px solid var(--cherry); font-family: var(--display); font-size: 10px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }

.collection { padding: 140px 0; }
.collection__layout { display: grid; grid-template-columns: minmax(0, 0.92fr) minmax(380px, 1.08fr); gap: clamp(55px, 9vw, 140px); }
.collection__copy p:last-child { max-width: 485px; margin: 25px 0 0; color: var(--ink-soft); font-size: 17px; }
.collection__list { padding: 0; margin: 0; list-style: none; border-top: 1px solid var(--line-dark); }
.collection__item { display: grid; grid-template-columns: 42px 1fr; gap: 15px; padding: 20px 0; border-bottom: 1px solid var(--line-dark); }
.collection__item > span { padding-top: 1px; color: var(--mustard); font-family: var(--display); font-weight: 800; }
.collection__item small { display: block; margin-bottom: 5px; color: var(--cherry); font-family: var(--display); font-size: 9px; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; }
.collection__item h3 { font-size: clamp(18px, 2vw, 25px); font-weight: 700; }
.collection__item--current { margin: 12px 0; padding: 21px 18px; color: var(--cream); background: var(--ink); border: 0; }
.collection__item--current > span { color: var(--mustard); }
.collection__item--current small { color: var(--salmon); }

.purchase { position: relative; overflow: hidden; padding: 126px 0; }
.purchase::before { content: ""; position: absolute; left: 52%; bottom: -170px; width: 540px; height: 540px; border: 1px solid rgba(241, 110, 119, 0.58); border-radius: 50%; }
.purchase__layout { display: grid; position: relative; z-index: 1; grid-template-columns: 1fr 0.7fr; align-items: center; gap: 90px; }
.purchase__copy h2 { max-width: 620px; }
.purchase__copy > p:not(.eyebrow):not(.purchase__availability) { max-width: 480px; margin: 23px 0 0; color: rgba(246, 240, 229, 0.8); font-size: 18px; }
.purchase__availability { max-width: 440px; margin: 28px 0 23px; color: var(--mustard); font-size: 14px; }
.purchase__launch { margin-top: 16px; }
.purchase__launch .button { min-height: 43px; font-size: 13px; }
.purchase__visual { display: grid; place-items: center; }
.book-cover--mini { --book-width: 227px; transform: rotate(5deg); filter: drop-shadow(13px 16px 0 rgba(216, 157, 83, 0.96)) drop-shadow(18px 21px 18px rgba(0, 0, 0, 0.22)); }
.book-cover--mini .book-cover__front { padding: 20px 19px; }
.book-cover--mini .book-cover__line { width: 25px; height: 4px; margin-bottom: 15px; }
.book-cover--mini .book-cover__collection { font-size: 7px; }
.book-cover--mini .book-cover__volume { margin-top: 7px; font-size: 6px; }
.book-cover--mini h2 { font-size: 36px; }
.book-cover--mini .book-cover__by { margin-top: 14px; font-size: 6px; }

.author-note { padding: 140px 0; color: var(--cream); background: var(--cherry); }
.author-note__layout { display: grid; grid-template-columns: 80px minmax(0, 900px); gap: 30px; }
.author-note__quote { margin: -20px 0 0; color: var(--mustard); font-family: Georgia, serif; font-size: 110px; line-height: 1; }
.author-note h2 { font-size: clamp(29px, 3.4vw, 47px); font-weight: 700; line-height: 1.13; letter-spacing: -0.04em; }
.author-note__signature { margin: 29px 0 0; color: var(--mustard); font-family: var(--display); font-size: 12px; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; }

.faq { padding: 132px 0 145px; }
.faq__layout { display: grid; grid-template-columns: minmax(260px, 0.62fr) minmax(450px, 1.1fr); gap: 12vw; }
.faq__items { border-top: 1px solid var(--line-dark); }
details { border-bottom: 1px solid var(--line-dark); }
summary { display: flex; min-height: 75px; align-items: center; justify-content: space-between; gap: 22px; cursor: pointer; font-family: var(--display); font-size: 16px; font-weight: 700; letter-spacing: -0.025em; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--cherry); font-size: 24px; font-weight: 400; }
details[open] summary::after { content: "−"; }
details p { max-width: 645px; margin: -5px 35px 24px 0; color: var(--ink-soft); }

.launch-callout { padding: 104px 0; }
.launch-callout__layout { display: grid; grid-template-columns: minmax(0, 0.95fr) minmax(330px, 0.65fr); align-items: end; gap: 80px; }
.launch-callout h2 { max-width: 680px; font-size: clamp(34px, 4vw, 57px); font-weight: 800; }
.launch-callout__action { max-width: 380px; justify-self: end; }
.launch-callout__action p { margin: 12px 0 0; color: rgba(246, 240, 229, 0.72); font-size: 14px; }

.site-footer { padding: 44px 0 168px; }
.footer__layout { display: flex; align-items: flex-start; justify-content: space-between; gap: 28px; color: rgba(246, 240, 229, 0.66); font-size: 12px; }
.footer__layout p { margin: 0; }
.footer__socials { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 11px 16px; }
.footer__socials a { display: inline-flex; align-items: center; gap: 7px; color: var(--mustard); font-family: var(--display); font-size: 9px; font-weight: 700; letter-spacing: 0.04em; line-height: 1.1; text-decoration: none; text-transform: uppercase; }
.footer__socials a:hover { color: var(--salmon); }
.footer__socials svg { width: 16px; height: 16px; flex: 0 0 auto; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.7; }
.footer__socials .icon-fill { fill: currentColor; stroke: none; }
.whatsapp-float { display: inline-flex; position: fixed; z-index: 40; right: 22px; bottom: calc(82px + env(safe-area-inset-bottom)); min-height: 52px; align-items: center; gap: 10px; padding: 10px 17px 10px 12px; color: var(--cream); background: var(--cherry); border: 1px solid var(--mustard); border-radius: 999px; box-shadow: 5px 5px 0 var(--mustard), 0 8px 23px rgba(0, 0, 0, 0.2); font-family: var(--display); font-size: 10px; font-weight: 800; letter-spacing: 0.04em; text-decoration: none; text-transform: uppercase; transition: transform 180ms ease, background-color 180ms ease; }
.whatsapp-float:hover { color: var(--ink); background: var(--mustard); transform: translateY(-3px); }
.whatsapp-float svg { width: 27px; height: 27px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.5; }
.whatsapp-float:focus-visible { outline: 3px solid var(--cream); outline-offset: 4px; }

#sobre, #conteudo, #autora, #comprar { scroll-margin-top: 44px; }

@media (max-width: 860px) {
  :root { --shell: min(100% - 40px, 640px); }
  .site-header { padding: 19px 0; }
  .nav-toggle { display: flex; width: 42px; height: 38px; align-items: center; justify-content: center; flex-direction: column; gap: 5px; padding: 0; color: var(--cream); background: transparent; border: 1px solid rgba(246, 240, 229, 0.42); }
  .nav-toggle span:not(.sr-only) { display: block; width: 15px; height: 1px; background: currentColor; }
  .main-nav { display: none; position: absolute; top: 70px; right: 20px; left: 20px; flex-direction: column; align-items: stretch; gap: 0; padding: 12px 17px; background: var(--ink); border: 1px solid rgba(246, 240, 229, 0.22); box-shadow: 0 18px 36px rgba(0, 0, 0, 0.16); }
  .is-menu-open .main-nav { display: flex; }
  .main-nav a { padding: 12px 0; }
  .main-nav a::after { display: none; }
  .hero { min-height: auto; padding: 135px 0 60px; }
  .hero::before { width: 65%; }
  .hero::after { top: 119px; left: auto; right: 20px; box-shadow: none; }
  .hero__layout { grid-template-columns: 1fr; gap: 44px; }
  h1 { font-size: clamp(43px, 12vw, 64px); }
  .hero__description { font-size: 17px; }
  .hero__book-stage { min-height: 405px; }
  .book-cover { --book-width: min(72vw, 304px); }
  .hero__stage-note { right: 2px; bottom: 0; }
  .intro, .audience, .author, .collection, .faq { padding: 94px 0; }
  .intro__layout, .audience__layout, .author__layout, .collection__layout, .faq__layout, .purchase__layout, .launch-callout__layout { grid-template-columns: 1fr; gap: 36px; }
  .section-marker { display: none; }
  .intro__accent { max-width: 260px; min-height: 190px; margin-top: 0; }
  .chapters { padding: 92px 0; }
  .section-heading { display: block; margin-bottom: 37px; }
  .section-heading > p { margin-top: 18px; }
  .chapters__grid { grid-template-columns: 1fr; }
  .chapters__cta { justify-content: flex-start; }
  .chapter-card:nth-child(n) { grid-column: auto; min-height: 0; }
  .chapter-card h3 { margin-top: 23px; }
  .audience__headline { position: static; }
  .author__photo-wrap { width: min(100% - 26px, 420px); margin-left: 27px; }
  .purchase { padding: 93px 0; }
  .purchase__visual { order: -1; justify-content: start; }
  .book-cover--mini { --book-width: 176px; }
  .author-note { padding: 94px 0; }
  .author-note__layout { grid-template-columns: 44px 1fr; gap: 14px; }
  .author-note__quote { font-size: 75px; }
  .footer__layout { align-items: flex-start; flex-direction: column; }
  .footer__socials { justify-content: flex-start; }
  .launch-callout { padding: 88px 0; }
  .launch-callout__action { justify-self: start; }
  .whatsapp-float { right: 16px; bottom: calc(76px + env(safe-area-inset-bottom)); }
}

@media (max-width: 460px) {
  :root { --shell: min(100% - 32px, 640px); }
  .hero__actions { align-items: stretch; flex-direction: column; }
  .button { width: 100%; }
  .launch-invite { margin-bottom: 58px; }
  .launch-invite .button, .launch-callout .button { width: 100%; }
  .intro h2, .audience h2, .author h2, .collection h2, .faq h2, .purchase h2 { font-size: 36px; }
  .chapter-card { padding: 21px 19px; }
  .collection__item { grid-template-columns: 30px 1fr; }
  summary { min-height: 68px; font-size: 15px; }
  .footer__socials { gap: 13px 15px; }
  .footer__socials a { font-size: 8px; }
  .whatsapp-float { right: 12px; bottom: calc(72px + env(safe-area-inset-bottom)); min-height: 48px; padding-right: 14px; font-size: 9px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}