/* =========================================================================
   PureNerve Care - Folha de estilo unica
   Abordagem: design-token driven. Tokens em :root, camada de utilitarios
   (.u-*) e componentes BEM com prefixo "pn-".
   Paleta botanica-medica calmante. Cantos quadrados, bordas fio de cabelo.
   ========================================================================= */

/* -------------------------------------------------------------------------
   TOKENS
   POR QUE: centralizar cor/espaco/tipo aqui deixa o site inteiro ajustavel
   em um lugar so, sem caçar valores magicos espalhados pelo CSS.
   ------------------------------------------------------------------------- */
:root {
  /* Cores */
  --pn-primary: #0f766e;      /* teal principal */
  --pn-primary-dark: #0b5952; /* teal escuro p/ hover */
  --pn-accent: #5eead4;       /* mint de destaque */
  --pn-sand: #f5f0e6;         /* fundo areia quente */
  --pn-ink: #1c2b2a;          /* texto principal */
  --pn-muted: #5b6b69;        /* texto secundario */
  --pn-white: #ffffff;
  --pn-line: #d9d2c4;         /* borda fio de cabelo sobre areia */
  --pn-line-soft: #e7e0d2;
  --pn-star: #d9a441;         /* dourado das estrelas */
  --pn-danger: #b3542f;       /* preço riscado / promo */

  /* Escala de espaçamento (base 4px) */
  --pn-space-1: 0.25rem;
  --pn-space-2: 0.5rem;
  --pn-space-3: 0.75rem;
  --pn-space-4: 1rem;
  --pn-space-5: 1.5rem;
  --pn-space-6: 2rem;
  --pn-space-7: 3rem;
  --pn-space-8: 4rem;
  --pn-space-9: 6rem;

  /* Raios: cantos quase quadrados por escolha de marca */
  --pn-radius: 4px;
  --pn-radius-lg: 6px;

  /* Tipografia */
  --pn-font-display: Georgia, 'Iowan Old Style', 'Palatino Linotype', 'Book Antiqua', serif;
  --pn-font-body: -apple-system, 'Segoe UI', Roboto, sans-serif;

  /* Largura de leitura / container */
  --pn-container: 1140px;

  /* Sombra sutil para cards brancos */
  --pn-shadow: 0 1px 2px rgba(28, 43, 42, 0.05);
}

/* -------------------------------------------------------------------------
   RESET LEVE
   ------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--pn-font-body);
  color: var(--pn-ink);
  background-color: var(--pn-sand);
  line-height: 1.65;
  font-size: 17px;
}

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

a {
  color: var(--pn-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1, h2, h3, h4 {
  font-family: var(--pn-font-display);
  color: var(--pn-ink);
  line-height: 1.2;
  font-weight: 600;
  margin: 0 0 var(--pn-space-4) 0;
}

h1 { font-size: clamp(2rem, 4.5vw, 3.1rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 var(--pn-space-4) 0; }

ul { margin: 0 0 var(--pn-space-4) 0; }

/* -------------------------------------------------------------------------
   UTILITARIOS
   POR QUE: pequenas classes reutilizaveis reduzem repeticao de layout
   (container, empilhamento vertical, fluxo de texto).
   ------------------------------------------------------------------------- */
.u-container {
  width: 100%;
  max-width: var(--pn-container);
  margin-inline: auto;
  padding-inline: var(--pn-space-5);
}

/* Empilha filhos com gap consistente */
.u-stack {
  display: flex;
  flex-direction: column;
  gap: var(--pn-space-4);
}

/* Fluxo vertical: margem entre irmãos (texto corrido) */
.u-flow > * + * {
  margin-top: var(--pn-space-4);
}

.u-section {
  padding-block: var(--pn-space-8);
}

.u-muted { color: var(--pn-muted); }

.u-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--pn-primary);
  font-family: var(--pn-font-body);
  margin: 0 0 var(--pn-space-3) 0;
}

/* Cabecalhos de secao alinhados a esquerda por escolha de marca */
.u-head {
  max-width: 640px;
  margin-bottom: var(--pn-space-6);
}

.u-head p {
  color: var(--pn-muted);
  margin: 0;
}

/* Link de pular para conteudo (acessibilidade) */
.u-skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--pn-primary);
  color: #fff;
  padding: var(--pn-space-3) var(--pn-space-4);
  z-index: 200;
}
.u-skip:focus {
  left: var(--pn-space-4);
  top: var(--pn-space-4);
}

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

/* -------------------------------------------------------------------------
   BOTOES
   ------------------------------------------------------------------------- */
.pn-btn {
  display: inline-block;
  font-family: var(--pn-font-body);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1;
  padding: 0.85rem 1.6rem;
  border-radius: var(--pn-radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.pn-btn:hover { text-decoration: none; }

.pn-btn--primary {
  background-color: var(--pn-primary);
  color: #fff;
}
.pn-btn--primary:hover { background-color: var(--pn-primary-dark); }

.pn-btn--ghost {
  background-color: transparent;
  color: var(--pn-primary);
  border-color: var(--pn-primary);
}
.pn-btn--ghost:hover {
  background-color: var(--pn-primary);
  color: #fff;
}

.pn-btn--block { display: block; width: 100%; }

/* -------------------------------------------------------------------------
   TOPLINE - barra fina de anuncio
   ------------------------------------------------------------------------- */
.pn-topline {
  background-color: var(--pn-ink);
  color: #e9efee;
  font-size: 0.82rem;
  letter-spacing: 0.02em;
}
.pn-topline__list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--pn-space-5);
  padding-block: var(--pn-space-2);
  list-style: none;
  margin: 0;
}
.pn-topline__item::before {
  content: "\2713";
  color: var(--pn-accent);
  margin-right: 0.4rem;
}

/* -------------------------------------------------------------------------
   NAV - cabecalho fixo
   POR QUE: sticky mantem navegacao acessivel em paginas longas de produto.
   ------------------------------------------------------------------------- */
.pn-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(245, 240, 230, 0.96);
  backdrop-filter: saturate(1.2) blur(6px);
  border-bottom: 1px solid var(--pn-line);
}
.pn-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--pn-space-5);
  padding-block: var(--pn-space-3);
}
.pn-nav__brand {
  display: inline-flex;
  align-items: center;
}
.pn-nav__brand img { height: 38px; width: auto; }
.pn-nav__menu {
  display: flex;
  align-items: center;
  gap: var(--pn-space-5);
  list-style: none;
  margin: 0;
  padding: 0;
}
.pn-nav__link {
  color: var(--pn-ink);
  font-weight: 500;
  font-size: 0.98rem;
}
.pn-nav__link:hover { color: var(--pn-primary); text-decoration: none; }
.pn-nav__actions { display: flex; align-items: center; gap: var(--pn-space-4); }

/* Botao hamburger - escondido no desktop */
.pn-nav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--pn-line);
  border-radius: var(--pn-radius);
  padding: 0.5rem 0.6rem;
  cursor: pointer;
  color: var(--pn-ink);
}
.pn-nav__toggle svg { display: block; }

/* -------------------------------------------------------------------------
   HERO - split 2 colunas (copy esquerda, imagem direita)
   ------------------------------------------------------------------------- */
.pn-hero {
  border-bottom: 1px solid var(--pn-line);
}
.pn-hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--pn-space-7);
  align-items: center;
  padding-block: var(--pn-space-8);
}
.pn-hero__copy { max-width: 560px; }
.pn-hero__title { margin-bottom: var(--pn-space-4); }
.pn-hero__lead {
  font-size: 1.1rem;
  color: var(--pn-muted);
  margin-bottom: var(--pn-space-5);
}
.pn-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--pn-space-3);
  margin-bottom: var(--pn-space-5);
}
.pn-hero__trust {
  font-size: 0.9rem;
  color: var(--pn-muted);
  display: flex;
  align-items: center;
  gap: var(--pn-space-2);
}
.pn-hero__trust .pn-stars { font-size: 0.95rem; }
.pn-hero__media {
  border: 1px solid var(--pn-line);
  border-radius: var(--pn-radius-lg);
  overflow: hidden;
  background: var(--pn-white);
}
.pn-hero__media img { width: 100%; height: auto; }

/* -------------------------------------------------------------------------
   ESTRELAS (rating reutilizavel)
   ------------------------------------------------------------------------- */
.pn-stars {
  color: var(--pn-star);
  letter-spacing: 0.08em;
  font-size: 1rem;
}
.pn-stars__count {
  color: var(--pn-muted);
  font-size: 0.85rem;
  margin-left: 0.4rem;
  letter-spacing: normal;
}

/* -------------------------------------------------------------------------
   STEPS - como funciona
   ------------------------------------------------------------------------- */
.pn-steps { background: var(--pn-white); border-block: 1px solid var(--pn-line); }
.pn-steps__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--pn-space-6);
}
.pn-step {
  border-left: 3px solid var(--pn-accent);
  padding-left: var(--pn-space-4);
}
.pn-step__num {
  font-family: var(--pn-font-display);
  font-size: 2.4rem;
  color: var(--pn-primary);
  line-height: 1;
  display: block;
  margin-bottom: var(--pn-space-2);
}
.pn-step h3 { margin-bottom: var(--pn-space-2); }
.pn-step p { color: var(--pn-muted); margin: 0; }

/* -------------------------------------------------------------------------
   LINEUP - produtos em linhas horizontais alternadas
   POR QUE: layout assinatura pede linhas alternadas, nao grade de cards.
   ------------------------------------------------------------------------- */
.pn-lineup__rows { display: flex; flex-direction: column; gap: var(--pn-space-7); }

.pn-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--pn-space-7);
  align-items: center;
}
/* Linhas pares invertem a ordem (imagem a direita) */
.pn-item--flip .pn-item__media { order: 2; }
.pn-item--flip .pn-item__body { order: 1; }

.pn-item__media {
  border: 1px solid var(--pn-line);
  border-radius: var(--pn-radius-lg);
  overflow: hidden;
  background: var(--pn-white);
}
.pn-item__body { max-width: 460px; }
.pn-item__flag {
  display: inline-block;
  background: var(--pn-accent);
  color: var(--pn-ink);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.6rem;
  border-radius: var(--pn-radius);
  margin-bottom: var(--pn-space-3);
}
.pn-item__name { margin-bottom: var(--pn-space-2); }
.pn-item__desc { color: var(--pn-muted); }
.pn-item__price {
  font-size: 1.4rem;
  font-family: var(--pn-font-display);
  color: var(--pn-ink);
  margin-block: var(--pn-space-3);
}
.pn-item__was {
  color: var(--pn-danger);
  text-decoration: line-through;
  font-size: 1rem;
  font-family: var(--pn-font-body);
  margin-left: var(--pn-space-2);
}

/* -------------------------------------------------------------------------
   SCIENCE - spotlight de ingredientes (2 colunas)
   ------------------------------------------------------------------------- */
.pn-science { background: var(--pn-white); border-block: 1px solid var(--pn-line); }
.pn-science__grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--pn-space-7);
  align-items: center;
}
.pn-science__prose h2 { margin-bottom: var(--pn-space-4); }
.pn-science__facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--pn-space-4);
}
.pn-fact {
  border: 1px solid var(--pn-line);
  border-radius: var(--pn-radius);
  padding: var(--pn-space-5);
  background: var(--pn-sand);
}
.pn-fact__big {
  font-family: var(--pn-font-display);
  font-size: 2rem;
  color: var(--pn-primary);
  line-height: 1;
  display: block;
  margin-bottom: var(--pn-space-2);
}
.pn-fact__label { font-size: 0.9rem; color: var(--pn-muted); }

/* -------------------------------------------------------------------------
   VOICE - depoimento rotativo unico
   ------------------------------------------------------------------------- */
.pn-voice { text-align: left; }
.pn-voice__stage {
  max-width: 760px;
  min-height: 190px;
  position: relative;
}
.pn-quote {
  opacity: 0;
  position: absolute;
  inset: 0;
  transition: opacity 0.6s ease;
  pointer-events: none;
}
.pn-quote.is-active { opacity: 1; position: relative; pointer-events: auto; }
.pn-quote__text {
  font-family: var(--pn-font-display);
  font-size: 1.5rem;
  line-height: 1.4;
  color: var(--pn-ink);
  margin-bottom: var(--pn-space-4);
}
.pn-quote__who { font-weight: 600; }
.pn-quote__meta { color: var(--pn-muted); font-size: 0.9rem; }
.pn-voice__dots {
  display: flex;
  gap: var(--pn-space-2);
  margin-top: var(--pn-space-5);
}
.pn-voice__dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  border: 1px solid var(--pn-primary);
  background: transparent;
  cursor: pointer;
  padding: 0;
}
.pn-voice__dot.is-active { background: var(--pn-primary); }

/* -------------------------------------------------------------------------
   PROMISE - faixa da garantia
   ------------------------------------------------------------------------- */
.pn-promise {
  background: var(--pn-primary);
  color: #eafaf7;
}
.pn-promise__grid {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--pn-space-6);
  align-items: center;
  padding-block: var(--pn-space-7);
}
.pn-promise__seal {
  width: 96px; height: 96px;
  border: 3px solid var(--pn-accent);
  border-radius: 50%;
  display: grid;
  place-items: center;
  text-align: center;
  font-family: var(--pn-font-display);
  font-size: 0.8rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.1;
}
.pn-promise__seal strong { display: block; font-size: 1.7rem; }
.pn-promise h2 { color: #fff; margin-bottom: var(--pn-space-2); }
.pn-promise p { color: #cdeee8; margin: 0; }

/* -------------------------------------------------------------------------
   SIGNUP - captura de email inline
   ------------------------------------------------------------------------- */
.pn-signup { background: var(--pn-sand); }
.pn-signup__box {
  border: 1px solid var(--pn-line);
  border-radius: var(--pn-radius-lg);
  background: var(--pn-white);
  padding: var(--pn-space-6);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--pn-space-5);
  align-items: center;
}
.pn-signup__copy h2 { margin-bottom: var(--pn-space-2); }
.pn-signup__copy p { margin: 0; color: var(--pn-muted); }
.pn-signup__form { display: flex; gap: var(--pn-space-2); flex-wrap: wrap; }
.pn-signup__input {
  font-family: var(--pn-font-body);
  font-size: 1rem;
  padding: 0.8rem 1rem;
  border: 1px solid var(--pn-line);
  border-radius: var(--pn-radius);
  min-width: 240px;
  background: var(--pn-sand);
  color: var(--pn-ink);
}
.pn-signup__note { font-size: 0.85rem; color: var(--pn-primary); margin-top: var(--pn-space-3); }

/* -------------------------------------------------------------------------
   FDA DISCLAIMER (bloco na home + linha no rodape)
   ------------------------------------------------------------------------- */
.pn-fda {
  background: var(--pn-sand);
  border-top: 1px solid var(--pn-line);
}
.pn-fda__box {
  border: 1px dashed var(--pn-line);
  border-radius: var(--pn-radius);
  padding: var(--pn-space-5);
  font-size: 0.9rem;
  color: var(--pn-muted);
}
.pn-fda__box strong { color: var(--pn-ink); }

/* -------------------------------------------------------------------------
   FOOTER
   ------------------------------------------------------------------------- */
.pn-siteftr {
  background: var(--pn-ink);
  color: #c6d2d0;
  font-size: 0.92rem;
}
.pn-siteftr a { color: #c6d2d0; }
.pn-siteftr a:hover { color: #fff; }
.pn-siteftr__top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--pn-space-6);
  padding-top: var(--pn-space-8);
  padding-bottom: var(--pn-space-6);
}
.pn-siteftr__brand img { height: 40px; margin-bottom: var(--pn-space-4); filter: brightness(0) invert(1); }
.pn-siteftr__blurb { color: #9fb0ad; max-width: 320px; }
.pn-siteftr__col h4 { color: #fff; font-size: 1rem; margin-bottom: var(--pn-space-3); }
.pn-siteftr__col ul { list-style: none; padding: 0; margin: 0; }
.pn-siteftr__col li { margin-bottom: var(--pn-space-2); }
.pn-siteftr__socials { display: flex; gap: var(--pn-space-3); margin-top: var(--pn-space-4); }
.pn-siteftr__socials a { display: inline-flex; }
.pn-siteftr__socials svg { width: 22px; height: 22px; fill: #c6d2d0; }
.pn-siteftr__socials a:hover svg { fill: #fff; }
.pn-siteftr__pay {
  display: flex; gap: var(--pn-space-2); flex-wrap: wrap;
  margin-top: var(--pn-space-4);
}
.pn-siteftr__pay span {
  border: 1px solid #3a4a48;
  border-radius: var(--pn-radius);
  padding: 0.2rem 0.5rem;
  font-size: 0.72rem;
  color: #9fb0ad;
  letter-spacing: 0.05em;
}
.pn-siteftr__bottom {
  border-top: 1px solid #2c3b39;
  padding-block: var(--pn-space-5);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--pn-space-3);
  color: #9fb0ad;
  font-size: 0.85rem;
}
.pn-siteftr__fda { color: #8fa19e; font-size: 0.8rem; max-width: 720px; }

/* -------------------------------------------------------------------------
   PAGINAS INTERNAS - blocos genericos reutilizaveis
   ------------------------------------------------------------------------- */
.pn-page-head {
  background: var(--pn-white);
  border-bottom: 1px solid var(--pn-line);
  padding-block: var(--pn-space-7);
}
.pn-crumbs { font-size: 0.85rem; color: var(--pn-muted); margin-bottom: var(--pn-space-3); }
.pn-crumbs a { color: var(--pn-muted); }

.pn-prose { max-width: 760px; }
.pn-prose h2 { margin-top: var(--pn-space-6); }
.pn-prose h3 { margin-top: var(--pn-space-5); }
.pn-prose ul { padding-left: var(--pn-space-5); }
.pn-prose li { margin-bottom: var(--pn-space-2); }
.pn-prose table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--pn-space-5);
}
.pn-prose th, .pn-prose td {
  text-align: left;
  padding: var(--pn-space-3);
  border-bottom: 1px solid var(--pn-line);
}

/* -------------------------------------------------------------------------
   SHOP INDEX - grade simples de produtos
   ------------------------------------------------------------------------- */
.pn-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--pn-space-6);
}
.pn-card {
  border: 1px solid var(--pn-line);
  border-radius: var(--pn-radius-lg);
  background: var(--pn-white);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.pn-card__media { border-bottom: 1px solid var(--pn-line); }
.pn-card__body { padding: var(--pn-space-5); display: flex; flex-direction: column; gap: var(--pn-space-2); flex: 1; }
.pn-card__name { margin: 0; }
.pn-card__price { font-family: var(--pn-font-display); font-size: 1.3rem; }
.pn-card__price .pn-item__was { font-size: 0.95rem; }
.pn-card__foot { margin-top: auto; padding-top: var(--pn-space-3); }

/* -------------------------------------------------------------------------
   PAGINA DE PRODUTO
   ------------------------------------------------------------------------- */
.pn-pdp {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--pn-space-7);
  align-items: start;
  padding-block: var(--pn-space-8);
}
.pn-pdp__media {
  border: 1px solid var(--pn-line);
  border-radius: var(--pn-radius-lg);
  overflow: hidden;
  background: var(--pn-white);
  position: sticky;
  top: 90px;
}
.pn-pdp__name { margin-bottom: var(--pn-space-3); }
.pn-pdp__price {
  font-family: var(--pn-font-display);
  font-size: 2rem;
  color: var(--pn-ink);
  margin-block: var(--pn-space-4);
}
.pn-pdp__buy { margin-bottom: var(--pn-space-5); }
.pn-pdp__lead { font-size: 1.08rem; color: var(--pn-muted); }

/* Tabela estilo "supplement facts" */
.pn-facts {
  border: 2px solid var(--pn-ink);
  padding: var(--pn-space-4);
  max-width: 420px;
  background: var(--pn-white);
  font-family: var(--pn-font-body);
}
.pn-facts__title {
  font-family: var(--pn-font-display);
  font-size: 1.4rem;
  border-bottom: 6px solid var(--pn-ink);
  padding-bottom: var(--pn-space-2);
  margin: 0 0 var(--pn-space-2) 0;
}
.pn-facts table { width: 100%; border-collapse: collapse; }
.pn-facts th, .pn-facts td {
  text-align: left;
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--pn-line);
  font-size: 0.9rem;
}
.pn-facts td:last-child { text-align: right; }
.pn-facts__row--head th { border-bottom: 3px solid var(--pn-ink); }

/* Reviews especificas do produto */
.pn-testi { display: flex; flex-direction: column; gap: var(--pn-space-4); }
.pn-testi__item {
  border: 1px solid var(--pn-line);
  border-radius: var(--pn-radius);
  padding: var(--pn-space-5);
  background: var(--pn-white);
}
.pn-testi__head { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--pn-space-2); }
.pn-testi__who { font-weight: 600; }

/* -------------------------------------------------------------------------
   ACCORDION FAQ (classes proprias, NAO .faq*)
   ------------------------------------------------------------------------- */
.pn-qa { max-width: 820px; }
.pn-qa__item {
  border: 1px solid var(--pn-line);
  border-radius: var(--pn-radius);
  background: var(--pn-white);
  margin-bottom: var(--pn-space-3);
  overflow: hidden;
}
.pn-qa__trigger {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: var(--pn-space-4) var(--pn-space-5);
  font-family: var(--pn-font-display);
  font-size: 1.1rem;
  color: var(--pn-ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--pn-space-4);
}
.pn-qa__sign {
  flex: none;
  font-family: var(--pn-font-body);
  font-size: 1.4rem;
  color: var(--pn-primary);
  transition: transform 0.2s ease;
}
.pn-qa__trigger[aria-expanded="true"] .pn-qa__sign { transform: rotate(45deg); }
.pn-qa__panel {
  padding: 0 var(--pn-space-5);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease, padding 0.25s ease;
}
.pn-qa__panel[data-open="true"] {
  max-height: 500px;
  padding-bottom: var(--pn-space-5);
}
.pn-qa__panel p { margin: 0; color: var(--pn-muted); }

/* -------------------------------------------------------------------------
   CONTATO
   ------------------------------------------------------------------------- */
.pn-contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--pn-space-7);
  align-items: start;
}
.pn-form { display: flex; flex-direction: column; gap: var(--pn-space-4); }
.pn-field { display: flex; flex-direction: column; gap: var(--pn-space-2); }
.pn-field label { font-weight: 600; font-size: 0.95rem; }
.pn-field input,
.pn-field textarea {
  font-family: var(--pn-font-body);
  font-size: 1rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--pn-line);
  border-radius: var(--pn-radius);
  background: var(--pn-white);
  color: var(--pn-ink);
}
.pn-field textarea { min-height: 150px; resize: vertical; }
.pn-form__ok {
  display: none;
  background: #e6f6f2;
  border: 1px solid var(--pn-accent);
  color: var(--pn-primary-dark);
  padding: var(--pn-space-4);
  border-radius: var(--pn-radius);
}
.pn-form__ok.is-visible { display: block; }
.pn-info__list { list-style: none; padding: 0; margin: 0; }
.pn-info__list li { margin-bottom: var(--pn-space-4); }
.pn-info__list strong { display: block; color: var(--pn-ink); }

/* -------------------------------------------------------------------------
   RESPONSIVO
   POR QUE: abaixo de 768px os layouts 2 colunas empilham; o menu vira drawer.
   ------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .pn-siteftr__top { grid-template-columns: 1fr 1fr; }
  .pn-steps__grid { grid-template-columns: 1fr; gap: var(--pn-space-5); }
}

@media (max-width: 768px) {
  .pn-nav__toggle { display: inline-flex; }

  /* Menu vira coluna escondida, controlado por JS */
  .pn-nav__menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--pn-sand);
    border-bottom: 1px solid var(--pn-line);
    padding: var(--pn-space-4) var(--pn-space-5);
  }
  .pn-nav__menu.is-open { display: flex; }
  .pn-nav__menu li { width: 100%; padding-block: var(--pn-space-2); border-bottom: 1px solid var(--pn-line-soft); }

  .pn-hero__grid { grid-template-columns: 1fr; gap: var(--pn-space-6); }
  .pn-hero__media { order: -1; }

  /* Produtos empilham; imagem sempre em cima */
  .pn-item { grid-template-columns: 1fr; gap: var(--pn-space-4); }
  .pn-item--flip .pn-item__media { order: -1; }
  .pn-item--flip .pn-item__body { order: 2; }

  .pn-science__grid { grid-template-columns: 1fr; gap: var(--pn-space-6); }
  .pn-promise__grid { grid-template-columns: 1fr; text-align: left; }
  .pn-signup__box { grid-template-columns: 1fr; }
  .pn-grid { grid-template-columns: 1fr; }
  .pn-pdp { grid-template-columns: 1fr; }
  .pn-pdp__media { position: static; }
  .pn-contact { grid-template-columns: 1fr; }
  .pn-siteftr__top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 520px) {
  .pn-science__facts { grid-template-columns: 1fr; }
  .pn-siteftr__top { grid-template-columns: 1fr; }
  .pn-topline__list { gap: var(--pn-space-3); font-size: 0.75rem; }
}