/* ==========================================================================
   Metalúrgica Rios — folha de estilo principal
   Paleta: azul Rios e cromado, amostrados da logo, sobre aço grafite
   ========================================================================== */

:root {
  /* Cor */
  --aco-900: #101214;
  --aco-800: #191d21;
  --aco-700: #23282d;
  --aco-600: #333a41;
  --aco-400: #6d7780;
  --aco-200: #b9c1c8;
  --nevoa:   #f4f5f6;
  --branco:  #ffffff;

  /* Azul Rios — amostrado da elipse da logo */
  --azul:       #3f3f8c;
  --azul-claro: #5a5aa8;
  --azul-texto: #8585cc;   /* texto sobre fundo escuro — AA 5.5:1 */
  --azul-esc:   #26267d;
  --azul-fundo: #000066;

  /* Cromado — o perfil de aço da logo */
  --cromo:      #c9ccd2;
  --cromo-cl:   #eef0f3;


  /* Tipografia */
  --display: "Archivo", "Arial Narrow", Impact, sans-serif;
  --corpo:   "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* Métrica */
  --gutter: clamp(1.25rem, 4vw, 3.5rem);
  --maxw: 1240px;
  --radius: 3px;

  --t: 260ms cubic-bezier(.2, .7, .3, 1);
}

/* -------------------------------------------------------------- reset --- */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--corpo);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--aco-800);
  background: var(--branco);
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0; text-wrap: pretty; }

::selection { background: var(--azul); color: var(--branco); }

:focus-visible {
  outline: 3px solid var(--azul-claro);
  outline-offset: 3px;
}

/* --------------------------------------------------------- utilitários --- */

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

.secao { padding-block: clamp(4.5rem, 9vw, 8rem); }
.secao--escura { background: var(--aco-900); color: var(--nevoa); }
.secao--nevoa  { background: var(--nevoa); }

.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;
}

.pular-link {
  position: absolute; left: 50%; top: 0;
  transform: translate(-50%, -200%);
  z-index: 200; background: var(--azul); color: var(--branco);
  padding: .75rem 1.25rem; font-weight: 700;
}
.pular-link:focus { transform: translate(-50%, 0); }

/* Etiqueta de seção — barra de aço + rótulo */
.rotulo {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  font-family: var(--display);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--azul);
  margin-bottom: 1.1rem;
}
.rotulo::before {
  content: "";
  width: 34px; height: 3px;
  background: var(--azul-claro);
}
.secao--escura .rotulo { color: var(--azul-texto); }

.titulo-secao {
  font-size: clamp(2.1rem, 5.2vw, 3.6rem);
  text-transform: uppercase;
}

.intro-secao {
  max-width: 58ch;
  margin-top: 1.25rem;
  color: var(--aco-600);
  font-size: 1.05rem;
}
.secao--escura .intro-secao { color: var(--aco-200); }

/* ---------------------------------------------------------------- CTA --- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  padding: 1rem 1.75rem;
  font-family: var(--display);
  font-weight: 700;
  font-size: .92rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  border: 2px solid transparent;
  border-radius: var(--radius);
  transition: background var(--t), color var(--t), border-color var(--t), transform var(--t);
}
.btn:hover { transform: translateY(-2px); }
.btn svg { width: 18px; height: 18px; flex: none; }

.btn--marca {
  background: var(--azul);
  color: var(--branco);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .18);
}
.btn--marca:hover { background: var(--azul-claro); }

.btn--linha { border-color: currentColor; color: inherit; }
.btn--linha:hover { background: var(--branco); color: var(--aco-900); border-color: var(--branco); }

.secao--nevoa .btn--linha:hover,
.secao:not(.secao--escura) .btn--linha:hover { background: var(--aco-900); color: var(--branco); border-color: var(--aco-900); }

/* ---------------------------------------------------------- cabeçalho --- */

.topo {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(16, 18, 20, .0);
  transition: background var(--t), box-shadow var(--t), border-color var(--t);
  border-bottom: 1px solid transparent;
}
.topo.fixado {
  background: rgba(16, 18, 20, .94);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--aco-700);
}

.topo__linha {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: 96px;
}

/* Marca — logotipo Rios */
.marca {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: .3rem;
  color: var(--branco);
  flex: none;
}
.marca__logo {
  height: 58px;
  width: auto;
  display: block;
}
.marca__sub {
  font-family: var(--corpo);
  font-size: .58rem;
  font-weight: 600;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--cromo);
  padding-left: .15rem;
}

.marca--rodape .marca__logo { height: 54px; }

.nav { display: flex; align-items: center; gap: 2rem; }
.nav__link {
  font-size: .88rem;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--aco-200);
  position: relative;
  padding-block: .35rem;
  transition: color var(--t);
}
.nav__link::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 100%; height: 2px;
  background: var(--azul-claro);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t);
}
.nav__link:hover { color: var(--branco); }
.nav__link:hover::after { transform: scaleX(1); }

.topo__cta {
  padding: .7rem 1.2rem;
  font-size: .8rem;
}

.menu-btn {
  display: none;
  width: 44px; height: 44px;
  background: none;
  border: 1px solid var(--aco-600);
  border-radius: var(--radius);
  padding: 0;
  position: relative;
}
.menu-btn span {
  position: absolute;
  left: 12px;
  width: 20px; height: 2px;
  background: var(--branco);
  transition: transform var(--t), opacity var(--t);
}
.menu-btn span:nth-child(1) { top: 15px; }
.menu-btn span:nth-child(2) { top: 21px; }
.menu-btn span:nth-child(3) { top: 27px; }
.menu-btn[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-btn[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-btn[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* --------------------------------------------------------------- hero --- */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  background: var(--aco-900);
  overflow: hidden;
  isolation: isolate;
}

.hero__fundo {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero__fundo img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 55%;
  filter: saturate(1.05) contrast(1.02);
}
.hero__fundo::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom, rgba(16,18,20,.8) 0, rgba(16,18,20,0) 200px),
    linear-gradient(to top, rgba(16,18,20,.96) 4%, rgba(16,18,20,.62) 44%, rgba(16,18,20,.3) 100%),
    linear-gradient(to right, rgba(16,18,20,.8), rgba(16,18,20,.06) 66%);
}

/* trilho de aço: assinatura visual, ecoa o perfil metálico da bancada */
.hero__trilho {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 6px;
  background: linear-gradient(to right, var(--azul) 0 24%, var(--cromo) 24% 33%, var(--aco-600) 33% 100%);
  z-index: 2;
}

.hero__conteudo {
  padding-block: clamp(3rem, 9vh, 7rem) clamp(4rem, 10vh, 7rem);
  color: var(--branco);
  max-width: 900px;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .8rem;
  font-family: var(--display);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--azul-texto);
  margin-bottom: 1.6rem;
  padding: .5rem .95rem;
  border: 1px solid rgba(90, 90, 168, .5);
  border-radius: 100px;
  background: rgba(16, 18, 20, .72);
  backdrop-filter: blur(6px);
}

.hero h1 {
  font-size: clamp(1.9rem, 4vw, 3.1rem);
  text-transform: uppercase;
  line-height: 1.03;
}
.hero h1 em {
  font-style: normal;
  display: block;
  /* cromado: o brilho do aço da logo, legível sobre foto */
  background: linear-gradient(100deg, #ffffff 8%, var(--cromo) 42%, #8f93a0 62%, #ffffff 92%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__texto {
  margin-top: 1.2rem;
  max-width: 50ch;
  font-size: clamp(1rem, 1.1vw, 1.05rem);
  color: rgba(255, 255, 255, .82);
}

.hero__acoes {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2.4rem;
}

/* faixa de números encostada no rodapé do hero */
.hero__dados {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(126px, 1fr));
  gap: 1px;
  margin-top: clamp(1.4rem, 3vh, 1.9rem);
  max-width: 760px;
  background: rgba(255, 255, 255, .13);
  border: 1px solid rgba(255, 255, 255, .13);
}
.hero__dado {
  background: rgba(16, 18, 20, .72);
  padding: .9rem 1.1rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}
.hero__dado b {
  display: block;
  font-family: var(--display);
  font-size: clamp(1.05rem, 1.6vw, 1.35rem);
  font-weight: 700;
  color: var(--branco);
  line-height: 1.1;
}
.hero__dado span {
  display: block;
  margin-top: .32rem;
  font-size: .74rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--aco-200);
}

/* --------------------------------------------------- faixa de clientes --- */

.marquise {
  background: var(--aco-800);
  border-block: 1px solid var(--aco-700);
  padding-block: 1.15rem;
  overflow: hidden;
}
.marquise__pista {
  display: flex;
  align-items: center;
  gap: 3.5rem;
  width: max-content;
  animation: correr 34s linear infinite;
}
.marquise__item {
  font-family: var(--display);
  font-size: .84rem;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--aco-400);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 3.5rem;
}
.marquise__item::after {
  content: "";
  width: 6px; height: 6px;
  background: var(--azul-claro);
  border-radius: 50%;
  flex: none;
}
@keyframes correr {
  to { transform: translateX(-50%); }
}
.marquise:hover .marquise__pista { animation-play-state: paused; }

/* -------------------------------------------------------------- sobre --- */

.sobre__grade {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}

.sobre__texto p + p { margin-top: 1.1rem; }

.sobre__figura {
  position: relative;
}
.sobre__figura img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: var(--radius);
}
/* selo de anos, ancorado no canto da foto */
.sobre__selo {
  position: absolute;
  left: -1.5rem;
  bottom: -1.5rem;
  background: var(--azul);
  color: var(--branco);
  padding: 1.3rem 1.6rem;
  border-radius: var(--radius);
  max-width: 210px;
}
.sobre__selo b {
  display: block;
  font-family: var(--display);
  font-size: 2.6rem;
  line-height: 1;
}
.sobre__selo span {
  display: block;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-top: .35rem;
  line-height: 1.35;
}

/* Missão / visão / valores — três colunas separadas por filete de aço */
.pilares {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: clamp(3rem, 7vw, 5rem);
  border-top: 1px solid var(--aco-200);
}
.pilar {
  padding: 2.2rem 2rem 0;
  border-right: 1px solid var(--aco-200);
}
.pilar:first-child { padding-left: 0; }
.pilar:last-child { border-right: 0; padding-right: 0; }
.pilar h3 {
  font-size: 1.4rem;
  text-transform: uppercase;
  margin-bottom: .8rem;
}
.pilar p { color: var(--aco-600); font-size: .97rem; }
.pilar__marca {
  display: block;
  width: 30px; height: 3px;
  background: var(--azul-claro);
  margin-bottom: 1.2rem;
}

/* ------------------------------------------------------------ produtos --- */

.filtros {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 2.5rem;
}
.filtro {
  padding: .6rem 1.1rem;
  background: transparent;
  border: 1px solid var(--aco-600);
  border-radius: 100px;
  color: var(--aco-200);
  font-size: .84rem;
  font-weight: 500;
  letter-spacing: .05em;
  transition: background var(--t), color var(--t), border-color var(--t);
}
.filtro:hover { border-color: var(--azul-claro); color: var(--branco); }
.filtro[aria-pressed="true"] {
  background: var(--azul);
  border-color: var(--azul);
  color: var(--branco);
  font-weight: 700;
}

.produtos {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.produto {
  background: var(--aco-800);
  border: 1px solid var(--aco-700);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--t), transform var(--t);
}
.produto:hover { border-color: var(--azul-claro); transform: translateY(-4px); }
.produto[hidden] { display: none; }

.produto__foto {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--aco-700);
  cursor: zoom-in;
}
.produto__foto:focus-visible {
  outline: 3px solid var(--azul-claro);
  outline-offset: -3px;
}
.produto__foto img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 600ms cubic-bezier(.2,.7,.3,1);
}
.produto:hover .produto__foto img { transform: scale(1.05); }

.produto__tag {
  position: absolute;
  top: .8rem; left: .8rem;
  background: rgba(16, 18, 20, .86);
  color: var(--cromo-cl);
  font-family: var(--display);
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  padding: .35rem .7rem;
  border-radius: 2px;
  backdrop-filter: blur(4px);
}

.produto__corpo {
  padding: 1.4rem 1.5rem 1.6rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.produto__corpo h3 {
  font-size: 1.35rem;
  text-transform: uppercase;
  color: var(--branco);
}
.produto__corpo p {
  margin-top: .6rem;
  font-size: .93rem;
  color: var(--aco-200);
  flex: 1;
}

.produto__specs {
  list-style: none;
  margin: 1.1rem 0 0;
  padding: 1.1rem 0 0;
  border-top: 1px solid var(--aco-700);
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
}
.produto__specs li {
  font-size: .74rem;
  letter-spacing: .04em;
  color: var(--aco-400);
  border: 1px solid var(--aco-600);
  border-radius: 2px;
  padding: .22rem .55rem;
}

.produto__link {
  margin-top: 1.4rem;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--display);
  font-size: .84rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--azul-texto);
  transition: gap var(--t);
}
.produto__link:hover { gap: .9rem; }

/* -------------------------------------------------------------- linhas --- */

.linhas {
  display: grid;
  /* dois segmentos: colunas iguais, sem esticar em telas largas */
  grid-template-columns: repeat(auto-fit, minmax(260px, 440px));
  justify-content: start;
  margin-top: 3rem;
}
.linha {
  background: var(--branco);
  padding: 2.2rem 2rem;
  border: 1px solid var(--aco-200);
}
.linha + .linha { border-left: 0; }
.linha__icone {
  width: 54px; height: 54px;
  display: grid; place-items: center;
  border: 2px solid var(--aco-900);
  border-radius: var(--radius);
  margin-bottom: 1.3rem;
}
.linha__icone svg { width: 28px; height: 28px; stroke: var(--aco-900); }
.linha h3 { font-size: 1.25rem; text-transform: uppercase; margin-bottom: .6rem; }
.linha p { font-size: .95rem; color: var(--aco-600); }

/* ------------------------------------------------------------- galeria --- */

.galeria {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 200px;
  gap: 12px;
  margin-top: 3rem;
}
.galeria__item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--aco-700);
  border: 0; padding: 0;
  display: block;
}
.galeria__item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 700ms cubic-bezier(.2,.7,.3,1);
}
.galeria__item:hover img { transform: scale(1.06); }
.galeria__item::after {
  content: attr(data-legenda);
  position: absolute;
  inset: auto 0 0 0;
  padding: 2.5rem .9rem .8rem;
  background: linear-gradient(to top, rgba(16,18,20,.9), transparent);
  color: var(--branco);
  font-size: .78rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 500;
  text-align: left;
  opacity: 0;
  transition: opacity var(--t);
}
.galeria__item:hover::after,
.galeria__item:focus-visible::after { opacity: 1; }

.galeria__item--largo { grid-column: span 2; }
.galeria__item--alto  { grid-row: span 2; }

/* ----------------------------------------------------------- lightbox --- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(10, 11, 12, .96);
  display: grid;
  place-items: center;
  padding: 4vmin;
}
.lightbox[hidden] { display: none; }
.lightbox img {
  max-width: 100%;
  max-height: 88vh;
  object-fit: contain;
  border-radius: var(--radius);
}
.lightbox__fechar {
  position: absolute;
  top: 1.4rem; right: 1.4rem;
  width: 46px; height: 46px;
  background: none;
  border: 1px solid var(--aco-600);
  border-radius: var(--radius);
  color: var(--branco);
  font-size: 1.5rem;
  line-height: 1;
  display: grid; place-items: center;
  transition: background var(--t), border-color var(--t);
}
.lightbox__fechar:hover { background: var(--azul); border-color: var(--azul); color: var(--branco); }

/* ------------------------------------------------------------ processo --- */

.processo {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2.5rem 2rem;
  margin-top: 3.5rem;
}
.etapa { position: relative; padding-top: 2.2rem; }
.etapa::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--aco-600);
}
.etapa::after {
  content: "";
  position: absolute;
  top: -4px; left: 0;
  width: 10px; height: 10px;
  background: var(--azul-claro);
  border-radius: 50%;
}
.etapa__num {
  font-family: var(--display);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--azul-texto);
  display: block;
  margin-bottom: .7rem;
}
.etapa h3 {
  font-size: 1.2rem;
  text-transform: uppercase;
  color: var(--branco);
  margin-bottom: .55rem;
}
.etapa p { font-size: .93rem; color: var(--aco-200); }

/* ------------------------------------------------------------ clientes --- */

.clientes__logos {
  list-style: none;
  margin: 3rem 0 0;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background: var(--branco);
  border: 1px solid var(--aco-200);
  border-radius: var(--radius);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(1.75rem, 4vw, 3rem) clamp(1.5rem, 3vw, 2.5rem);
  place-items: center;
}
.clientes__logos img {
  width: auto;
  height: clamp(44px, 6vw, 62px);
  object-fit: contain;
  filter: grayscale(1) contrast(1.15);
  opacity: .78;
  transition: filter var(--t), opacity var(--t);
}
.clientes__logos li:nth-child(5) { grid-column: 1 / span 2; justify-self: end; }
.clientes__logos li:nth-child(6) { grid-column: 3 / span 1; }
.clientes__logos li:nth-child(7) { grid-column: 4 / span 1; justify-self: start; }
.clientes__logos li:hover img { filter: none; opacity: 1; }

@media (max-width: 900px) {
  .clientes__logos { grid-template-columns: repeat(3, 1fr); }
  .clientes__logos li:nth-child(n) { grid-column: auto; justify-self: center; }
}
@media (max-width: 520px) {
  .clientes__logos { grid-template-columns: repeat(2, 1fr); }
}

/* ------------------------------------------------------------- contato --- */

.contato__grade {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 6vw, 4.5rem);
  align-items: start;
}

.canais { list-style: none; margin: 2.5rem 0 0; padding: 0; }
.canal {
  display: flex;
  gap: 1.1rem;
  padding: 1.35rem 0;
  border-top: 1px solid var(--aco-700);
}
.canal:last-child { border-bottom: 1px solid var(--aco-700); }
.canal__icone {
  width: 42px; height: 42px; flex: none;
  border: 1px solid var(--aco-600);
  border-radius: var(--radius);
  display: grid; place-items: center;
}
.canal__icone svg { width: 20px; height: 20px; stroke: var(--azul-texto); }
.canal dt {
  font-size: .74rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--aco-400);
  margin-bottom: .2rem;
}
.canal dd {
  margin: 0;
  font-family: var(--display);
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--branco);
}
.canal dd a:hover { color: var(--azul-texto); }
.canal__nota { font-family: var(--corpo); font-size: .85rem; font-weight: 400; color: var(--aco-400); }

.form {
  background: var(--aco-800);
  border: 1px solid var(--aco-700);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 4vw, 2.4rem);
}
.form__linha { margin-bottom: 1.1rem; }
.form__dupla {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.1rem;
}
.form label {
  display: block;
  font-size: .76rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--aco-200);
  margin-bottom: .5rem;
  font-weight: 600;
}
.form input,
.form select,
.form textarea {
  width: 100%;
  padding: .85rem 1rem;
  background: var(--aco-900);
  border: 1px solid var(--aco-600);
  border-radius: var(--radius);
  color: var(--branco);
  font-family: var(--corpo);
  font-size: .95rem;
  transition: border-color var(--t);
}
.form input:focus,
.form select:focus,
.form textarea:focus {
  border-color: var(--azul-claro);
  outline: none;
}
.form textarea { resize: vertical; min-height: 110px; }
.form select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23b9c1c8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1rem center; background-size: 18px; padding-right: 2.8rem; }
.form .btn { width: 100%; justify-content: center; margin-top: .4rem; }
.form__aviso {
  margin-top: .9rem;
  font-size: .8rem;
  color: var(--aco-400);
  text-align: center;
}

/* -------------------------------------------------------------- rodapé --- */

.rodape {
  background: var(--aco-900);
  color: var(--aco-200);
  border-top: 1px solid var(--aco-700);
  padding-block: clamp(3rem, 6vw, 4.5rem) 0;
}
.rodape__grade {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
}
.rodape__texto { margin-top: 1.2rem; max-width: 38ch; font-size: .92rem; color: var(--aco-400); }
.rodape h4 {
  font-size: .8rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--branco);
  margin-bottom: 1.2rem;
}
.rodape ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .7rem; }
.rodape a { font-size: .92rem; color: var(--aco-200); transition: color var(--t); }
.rodape a:hover { color: var(--azul-texto); }

.rodape__base {
  border-top: 1px solid var(--aco-700);
  padding-block: 1.6rem;
  padding-right: clamp(0px, 14vw, 190px);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  font-size: .82rem;
  color: var(--aco-400);
}

/* ------------------------------------------------- botão do WhatsApp --- */

.zap {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  background: #25d366;
  color: #06331a;
  padding: .9rem 1.3rem;
  border-radius: 100px;
  font-weight: 700;
  font-size: .9rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .35);
  transition: transform var(--t), box-shadow var(--t);
}
.zap:hover { transform: translateY(-3px); box-shadow: 0 14px 36px rgba(0, 0, 0, .45); }
.zap svg { width: 22px; height: 22px; fill: currentColor; flex: none; }

/* ------------------------------------------------- revelação no scroll --- */

.revelar {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 700ms ease, transform 700ms cubic-bezier(.2,.7,.3,1);
}
.revelar.visivel { opacity: 1; transform: none; }

/* ------------------------------------------------------------ responsivo --- */

@media (max-width: 1024px) {
  .sobre__grade,
  .contato__grade { grid-template-columns: 1fr; }
  .sobre__selo { left: auto; right: 1.5rem; bottom: 1.5rem; }
  .pilares { grid-template-columns: 1fr; }
  .pilar {
    padding: 2rem 0;
    border-right: 0;
    border-bottom: 1px solid var(--aco-200);
  }
  .pilar:last-child { border-bottom: 0; }
  .galeria { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 180px; }
  .rodape__grade { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav,
  .topo__cta { display: none; }
  .menu-btn { display: block; }

  .topo.aberto { background: var(--aco-900); }
  .topo.aberto .nav {
    display: flex;
    position: absolute;
    inset: 96px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--aco-900);
    border-bottom: 1px solid var(--aco-700);
    padding: 1rem var(--gutter) 2rem;
  }
  .topo.aberto .nav__link {
    padding: 1rem 0;
    border-bottom: 1px solid var(--aco-800);
    font-size: 1rem;
  }
  .topo.aberto .nav .btn {
    margin-top: 1.2rem;
    justify-content: center;
  }
  .topo.aberto .nav .btn { display: inline-flex; }

  .marca__logo { height: 44px; }
  .marca__sub { font-size: .5rem; letter-spacing: .2em; }
  .topo__linha { height: 78px; }
  .topo.aberto .nav { inset: 78px 0 auto 0; }

  .hero { min-height: auto; padding-top: 78px; }
  /* a faixa vira 2 colunas no celular: texto volta a tamanho legível */
  .hero__texto { font-size: 1rem; }
  .hero__dado { padding: .85rem 1rem; }
  .hero__dado b { font-size: 1.05rem; }
  .hero__dado span { font-size: .7rem; }
  .hero__eyebrow { font-size: .68rem; letter-spacing: .16em; }
  .hero__fundo img { object-position: center 62%; }
  .hero__dados { grid-template-columns: repeat(2, 1fr); }
  .form__dupla { grid-template-columns: 1fr; }
  .galeria__item--largo { grid-column: span 2; }
  .galeria__item--alto { grid-row: span 1; }
  .zap span { display: none; }
  .zap { padding: 1rem; }
}

@media (max-width: 560px) {
  .rodape__grade { grid-template-columns: 1fr; }
  .produtos { grid-template-columns: 1fr; }
}

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