:root {
  --black: #080808;
  --white: #ffffff;
  --light: #f2f2f2;
  --mid: #888888;
  --dark: #222222;
  --display: 'Zalando Sans Expanded', 'Arial Black', system-ui, sans-serif;
  --sans: 'Poppins', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --gutter: clamp(1.25rem, 5vw, 3rem);
  --max: 1240px;
  --ease: cubic-bezier(.2, .7, .2, 1);
  --bar-h: 32px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--white);
  color: var(--dark);
  font: 400 1rem/1.75 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p, figure, blockquote { margin: 0; }
:focus-visible { outline: 2px solid currentColor; outline-offset: 4px; }

.wrap { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }

.skip {
  position: absolute; left: 1rem; top: -100px; z-index: 100;
  padding: .75rem 1rem; background: var(--black); color: var(--white);
}
.skip:focus { top: 1rem; }

/* Tipografia */


.display {
  font: 400 clamp(1.75rem, .9rem + 3.4vw, 3.9rem)/1.08 var(--display);
  letter-spacing: -.01em; text-transform: uppercase;
  color: var(--black);
  text-wrap: balance;
}
.title {
  max-width: 26ch;
  font: 700 clamp(1.5rem, .95rem + 2.3vw, 2.9rem)/1.12 var(--display);
  letter-spacing: -.01em; text-transform: uppercase;
  color: var(--black);
  text-wrap: balance;
}
.title--sm { font-size: clamp(1.4rem, .95rem + 1.7vw, 2.3rem); }
.title em { font-style: normal; font-weight: 400; }
.display strong { font-weight: 700; }
.lead { max-width: 34rem; margin-top: 1.5rem; font-size: clamp(1.0625rem, 1rem + .35vw, 1.25rem); line-height: 1.6; }

/* Botões */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .875rem;
  width: 100%; min-height: 56px; padding: 0 1.25rem;
  border: 1px solid var(--black);
  background: var(--black); color: var(--white);
  font: 600 .8125rem/1.2 var(--sans);
  letter-spacing: .12em; text-transform: uppercase; text-align: center; text-decoration: none;
  cursor: pointer;
  transition: background-color .25s, color .25s, border-color .25s;
}
.btn::after { content: '→'; font-size: 1.1em; letter-spacing: 0; transition: transform .3s var(--ease); }
.btn:hover { background: var(--white); color: var(--black); }
.btn:hover::after { transform: translateX(4px); }
.btn:active { transform: translateY(1px); }
.btn--light { background: var(--white); color: var(--black); border-color: var(--white); }
.btn--light:hover { background: var(--black); color: var(--white); }
.btn--sm { width: auto; min-height: 44px; padding: 0 1.1rem; font-size: .6875rem; }
.btn--sm::after { display: none; }
.btn--lg { min-height: 64px; font-size: .875rem; }

/* Faixa promocional */
.promo-bar {
  position: sticky; top: 0; z-index: 70;
  height: var(--bar-h); overflow: hidden;
  background: var(--black); color: var(--white);
  font: 600 .6875rem/var(--bar-h) var(--sans); letter-spacing: .2em; text-transform: uppercase;
  white-space: nowrap;
}
.promo-bar__track { display: flex; width: max-content; animation: promo-scroll 40s linear infinite; }
.promo-bar__group { display: flex; }
.promo-bar__group > span { padding-inline: 1.25rem; }
.promo-bar__dot { color: var(--mid); padding-inline: 0 !important; }
@keyframes promo-scroll { to { transform: translateX(-50%); } }

/* Header */
.site-header { position: relative; z-index: 50; background: var(--white); border-bottom: 1px solid var(--light); }
.header__inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 64px; }
.brand { display: inline-flex; align-items: center; min-height: 44px; gap: .75rem; color: var(--black); text-decoration: none; }
.brand__logo { width: auto; height: 52px; }
.site-footer .brand__logo { height: 56px; }

/* Hero */
.hero { position: relative; overflow: hidden; padding-block: 2.5rem 4rem; }
.hero__grid { display: grid; gap: 3rem; }
.hero__offer { margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--black); max-width: 34rem; }
.hero__price { display: flex; flex-direction: column; gap: .35rem; font: 600 .75rem/1.4 var(--sans); letter-spacing: .16em; text-transform: uppercase; color: var(--black); }
.hero__price strong { font: 700 clamp(2.5rem, 1.9rem + 2.6vw, 3.75rem)/1 var(--display); letter-spacing: -.02em; }
.hero__actions { display: flex; flex-direction: column; gap: 1rem; margin-top: 1.75rem; }

.gift { display: flex; align-items: center; flex-wrap: wrap; gap: .5rem .75rem; margin-top: 1rem; font-weight: 500; color: var(--black); }
.gift__tag { padding: .3rem .6rem; background: var(--black); color: var(--white); font: 600 .6875rem/1.2 var(--sans); letter-spacing: .16em; text-transform: uppercase; }
.hero__visual { position: relative; display: grid; place-items: center; padding-block: 1.5rem 2.5rem; }

.numeral {
  position: absolute; top: 50%; left: 50%; z-index: 0;
  transform: translate(-50%, -50%);
  font: 700 clamp(13rem, 62vw, 30rem)/.8 var(--display);
  letter-spacing: -.04em;
  color: var(--light);
  pointer-events: none; user-select: none;
}
.numeral--soft { color: var(--white); }


/* Livro 3D */
.book-stage { --w: min(72vw, 320px); position: relative; z-index: 1; perspective: 1600px; }
/* Marcador 27×7 cm ao lado do livro 28×28 cm: mesma escala */
.bookmark {
  position: absolute; z-index: 2; right: -9%; bottom: -3%;
  width: calc(var(--w) * 7 / 28); height: calc(var(--w) * 27 / 28);
  object-fit: cover;
  box-shadow: 0 12px 24px rgba(8, 8, 8, .22);
  transform: rotate(5deg);
  transition: transform .9s var(--ease);
}
.book-stage:hover .bookmark { transform: rotate(2deg) translateX(6%); }
.book-stage::after {
  content: ''; position: absolute; z-index: -1;
  left: 8%; right: -6%; bottom: -7%; height: 12%;
  background: radial-gradient(closest-side, rgba(8, 8, 8, .28), rgba(8, 8, 8, 0));
}
.book {
  /* 28×28 cm com ~120 páginas: lombada ≈ 1 cm = 3,6% da largura */
  --d: calc(var(--w) * .036);
  position: relative;
  width: var(--w); aspect-ratio: 1;
  transform-style: preserve-3d;
  transform: rotateY(-24deg) rotateX(2deg);
  transition: transform .9s var(--ease);
}
.book-stage:hover .book { transform: rotateY(-10deg) rotateX(1deg); }
.book__cover {
  position: absolute; inset: 0; overflow: hidden;
  border-radius: 1px 3px 3px 1px;
  background: var(--light);
  transform: translateZ(calc(var(--d) / 2));
}
.book__cover img { position: absolute; inset: 0; z-index: 1; width: 100%; height: 100%; object-fit: cover; }
.book__cover::after {
  content: ''; position: absolute; inset: 0; z-index: 2; pointer-events: none;
  background:
    linear-gradient(90deg, rgba(255,255,255,.5) 0, rgba(255,255,255,0) 1%, rgba(0,0,0,.18) 1.8%, rgba(255,255,255,.25) 2.8%, rgba(255,255,255,0) 5%),
    linear-gradient(115deg, rgba(255,255,255,.1), rgba(255,255,255,0) 45%);
}
/* Páginas (lateral direita) */
.book::before {
  content: ''; position: absolute; top: 1.5%; bottom: 1.5%;
  left: calc(100% - var(--d) / 2 - 1px); width: var(--d);
  background:
    linear-gradient(90deg, rgba(8,8,8,.14), rgba(8,8,8,0) 70%),
    repeating-linear-gradient(90deg, var(--white) 0 1px, var(--light) 1px 2px);
  transform: rotateY(90deg);
}
/* Contracapa */
.book::after {
  content: ''; position: absolute; inset: 0;
  background: var(--mid);
  transform: translateZ(calc(var(--d) / -2));
}
.book__placeholder {
  position: absolute; inset: 8%;
  display: grid; place-content: center; padding: 1rem;
  border: 1px solid rgba(255, 255, 255, .35);
  color: var(--white);
  font: 700 1rem/1.3 var(--display); text-transform: uppercase; text-align: center;
}
.book__placeholder small {
  display: block; margin-top: .75rem;
  font: 500 .625rem/1.4 var(--sans); font-style: normal; letter-spacing: .12em; text-transform: uppercase;
  color: var(--mid);
}

/* Seções */
.section { padding-block: clamp(4.5rem, 10vw, 9rem); }
.section--light { background: var(--light); }
.section--dark { background: var(--black); color: var(--light); }
.section--dark .title { color: var(--white); }
.section__head { margin-bottom: clamp(3rem, 6vw, 5rem); }
.section__cta { display: flex; margin-top: clamp(3rem, 6vw, 5rem); padding-top: 2rem; border-top: 1px solid var(--black); }
.section--dark .section__cta { border-top-color: var(--dark); }
.section__cta--center { justify-content: center; border-top: 0; }

.prose { display: grid; gap: 1.25rem; max-width: 38rem; line-height: 1.75; }
.prose p:first-child { font: 500 clamp(1.125rem, 1.05rem + .4vw, 1.3rem)/1.6 var(--sans); color: var(--black); }
.prose--dark p:first-child { color: var(--white); }

/* O livro */
.livro__body { display: grid; gap: 2.5rem; }
.milestones { display: flex; align-items: center; gap: 1rem; color: var(--black); }
.milestone { display: flex; flex-direction: column; font: 700 clamp(2.25rem, 1.6rem + 3.4vw, 5rem)/1 var(--display); letter-spacing: -.02em; }
.milestone small { margin-top: .5rem; font: 600 .6875rem/1.4 var(--sans); letter-spacing: .18em; text-transform: uppercase; }
.milestones__line { flex: 1; min-width: 2rem; height: 1px; background: var(--black); }

.gallery { display: grid; gap: 1rem; margin-top: clamp(3rem, 7vw, 6rem); }
.photo { position: relative; overflow: hidden; aspect-ratio: 4 / 3; background: var(--dark); }
.photo--tall { aspect-ratio: 4 / 5; }
.photo--wide { aspect-ratio: 3 / 2; }
.photo::before {
  content: attr(data-placeholder);
  position: absolute; inset: 1rem;
  display: grid; place-items: center; padding: 1rem;
  border: 1px solid #333333;
  font: 500 .6875rem/1.5 var(--sans); letter-spacing: .12em; text-transform: uppercase; text-align: center;
  color: var(--mid);
}
.photo img {
  position: absolute; inset: 0; z-index: 1;
  width: 100%; height: 100%; object-fit: cover;
  filter: grayscale(1);
  transition: transform 1.2s var(--ease);
}
.photo:hover img { transform: scale(1.03); }

.toc { margin-top: clamp(3rem, 6vw, 5rem); padding-top: 2rem; border-top: 1px solid var(--black); }
.toc[hidden] { display: none; }
.toc__title { margin-bottom: 1.5rem; font: 600 .75rem/1.4 var(--sans); letter-spacing: .18em; text-transform: uppercase; }
.toc__list { margin: 0; padding: 0; list-style: none; }
.toc__list li {
  display: flex; justify-content: space-between; gap: 1rem;
  padding-block: 1rem; border-bottom: 1px solid var(--mid);
  font: 500 1.0625rem/1.4 var(--sans); color: var(--black);
}

/* O legado */
.legado__grid { display: grid; gap: 2.5rem; }
.quote { display: grid; gap: 1.5rem; max-width: 62rem; margin-top: clamp(4rem, 9vw, 8rem); padding-top: 2.5rem; border-top: 1px solid var(--dark); }
.quote blockquote p {
  font: 400 clamp(1.2rem, .9rem + 1.5vw, 2.2rem)/1.35 var(--display);
  color: var(--white); text-transform: uppercase;
  text-indent: -.5em;
}
.quote figcaption { font-size: .9375rem; color: var(--mid); }
.quote__name { display: block; margin-bottom: .25rem; font: 600 .8125rem/1.4 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--white); }
.hino {
  max-width: 22ch; margin: clamp(4rem, 9vw, 8rem) auto 0;
  font: 700 clamp(1.6rem, .9rem + 3vw, 3.5rem)/1.12 var(--display); text-transform: uppercase;
  color: var(--white); text-align: center; text-wrap: balance;
}
.hino__label {
  display: block; margin-top: 1.5rem;
  font: 600 .75rem/1.4 var(--sans); letter-spacing: .18em; text-transform: uppercase;
  color: var(--mid);
}

/* Pré-venda */
.offer__panel { display: grid; border: 1px solid var(--black); }
.offer__visual { position: relative; overflow: hidden; display: grid; place-items: center; padding: 4rem 1.5rem 4.5rem; background: var(--light); }
.offer__text { padding: 2.5rem 1.5rem; }
.offer__intro { max-width: 34rem; margin-top: 1.25rem; }
.offer__text .title { margin-top: 0; }
.price { margin-block: 2rem; padding-block: 1.75rem; border-block: 1px solid var(--black); }
.price__label { font: 600 .75rem/1.4 var(--sans); letter-spacing: .18em; text-transform: uppercase; color: var(--black); }
.price__value {
  display: flex; align-items: baseline;
  margin-block: .5rem .75rem;
  font: 700 clamp(3.75rem, 2.4rem + 6vw, 7rem)/1 var(--display);
  letter-spacing: -.03em; color: var(--black);
}
.price__cur { align-self: flex-start; margin: .45em .4em 0 0; font-size: .3em; letter-spacing: 0; }
.price__cents { font-size: .42em; letter-spacing: 0; }
.price__note { max-width: 30rem; font-size: .875rem; line-height: 1.6; }
.offer__gift { margin: 0 0 2rem; padding: 1.25rem; border: 1px solid var(--black); font-size: 1.0625rem; }
.offer__gift .gift__tag { flex: none; }
.offer__support { margin-top: 1rem; font-size: .8125rem; }

/* Rodapé */
.site-footer { padding-block: 3rem calc(3rem + 76px); background: var(--black); color: var(--mid); font-size: .875rem; }
.footer__inner { display: flex; flex-direction: column; gap: 1rem; }
.site-footer .brand { color: var(--white); }

/* Barra fixa (celular) */
.buybar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .625rem var(--gutter) calc(.625rem + env(safe-area-inset-bottom));
  border-top: 1px solid var(--dark);
  background: var(--black); color: var(--white);
  transform: translateY(100%);
  transition: transform .35s var(--ease);
}
.buybar.is-shown { transform: none; }
.buybar__price { display: flex; flex-direction: column; font: 600 .625rem/1.3 var(--sans); letter-spacing: .16em; text-transform: uppercase; color: var(--mid); }
.buybar__price strong { font: 700 1.125rem/1.2 var(--display); letter-spacing: 0; text-transform: none; color: var(--white); }

/* Revelação ao rolar */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.js .reveal.is-visible { opacity: 1; transform: none; }

/* ≥ 768px */
@media (min-width: 768px) {
  .site-header { position: sticky; top: var(--bar-h); }
  .btn { width: auto; padding-inline: 2rem; }
  .btn--sm { padding-inline: 1.1rem; }
  .book-stage { --w: min(50vw, 360px); }
  .gallery { grid-template-columns: 7fr 5fr; }
  .photo--tall { grid-row: span 2; aspect-ratio: auto; min-height: 100%; }
  .offer__visual { padding: 5rem 2rem; }
  .offer__text { padding: 3.5rem; }
  .footer__inner { flex-direction: row; align-items: center; justify-content: space-between; }
  .site-footer { padding-bottom: 3rem; }
  .buybar { display: none; }
}

/* ≥ 1024px */
@media (min-width: 1024px) {
  /* Hero cabe inteiro na janela: tamanhos limitados também pela altura (vh) */
  .hero { display: grid; align-items: center; min-height: calc(100svh - 65px - var(--bar-h)); padding-block: clamp(1.5rem, 4vh, 3rem); }
  .hero__grid { grid-template-columns: 1.1fr .9fr; align-items: center; gap: 2rem; }
  .hero__visual { padding-block: 1rem; }
  .hero .display { font-size: clamp(1.75rem, min(3.2vw, 6vh), 3.6rem); }
  .hero .lead { margin-top: clamp(.75rem, 2vh, 1.5rem); font-size: clamp(.9375rem, 1.9vh, 1.125rem); }
  .hero__offer { margin-top: clamp(1rem, 2.6vh, 2rem); padding-top: clamp(.75rem, 2vh, 1.5rem); }
  .hero__price strong { font-size: clamp(2rem, min(3vw, 6vh), 3.5rem); }
  .hero .gift { margin-top: .75rem; }
  .hero__actions { margin-top: clamp(.75rem, 2.2vh, 1.75rem); }
  .numeral { font-size: clamp(18rem, 30vw, 30rem); }
  .book-stage { --w: min(32vw, 440px, 56svh); }
  .livro__body { grid-template-columns: 5fr 7fr; gap: 4rem; align-items: start; }
  .milestones { position: sticky; top: 7rem; flex-direction: column; align-items: flex-start; gap: 1.5rem; }
  .milestones__line { flex: none; width: 1px; min-width: 0; height: 7rem; margin-left: .75rem; }
  .legado__grid { grid-template-columns: 7fr 5fr; gap: 4rem; align-items: end; }
  .quote { grid-template-columns: 1fr; padding-left: 8%; }
  .offer__panel { grid-template-columns: 5fr 6fr; }
  .offer__visual { padding: 6rem 3rem; }
  .offer__text { padding: 4.5rem 4rem; align-self: center; }
  .numeral--soft { font-size: clamp(16rem, 24vw, 24rem); }
}

@media (min-width: 1440px) {
  :root { --max: 1320px; }
}

@media (prefers-reduced-motion: reduce) {
  .promo-bar__track { animation: none; }
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}

/* Patrocinadores */
.sponsors { border-top: 1px solid var(--light); }
.sponsors__title { margin: 0 auto clamp(2.5rem, 5vw, 4rem); text-align: center; }
.sponsors__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin: 0; padding: 0; list-style: none; background: var(--light); border: 1px solid var(--light); }
.sponsors__item { display: grid; place-items: center; aspect-ratio: 3 / 2; padding: clamp(1rem, 4vw, 2.25rem); background: var(--white); }
.sponsors__item img { width: auto; height: auto; max-width: min(100%, 220px); max-height: 110px; }
@media (min-width: 768px) { .sponsors__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }