* { margin: 0; padding: 0; box-sizing: border-box; }

  :root {
    --verde-escuro: #2d4a1f;
    --verde-medio: #4a6b2a;
    --verde-claro: #8bc34a;
    --verde-lima: #a8d055;
    --bege: #f5f1e8;
    --branco: #ffffff;
    --texto: #333333;
    --texto-claro: #666666;
    --surface: #fbfcf7;
    --surface-elevated: rgba(255, 255, 255, 0.92);
    --line-soft: rgba(45, 74, 31, 0.12);
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
    --ease-smooth: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-emphasized: cubic-bezier(0.16, 1, 0.3, 1);
    --duration: 0.9s;
    --duration-fast: 260ms;
    --duration-base: 760ms;
    --duration-slow: 1040ms;
    --reveal-distance: 34px;
    --shadow-soft: 0 18px 45px rgba(45, 74, 31, 0.14);
    --shadow-hover: 0 24px 60px rgba(45, 74, 31, 0.22);
  }

  html {
    scroll-behavior: smooth;
    overflow-x: hidden;
  }

  body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    color: var(--texto);
    line-height: 1.6;
    background: var(--branco);
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  body.menu-open {
    overflow: hidden;
  }

  /* ============ ANIMAÇÕES DE SCROLL ============ */
  .fade-in,
  .fade-in-left,
  .fade-in-right,
  .fade-in-scale {
    --reveal-x: 0px;
    --reveal-y: var(--reveal-distance);
    --reveal-scale: 1;
    opacity: 1;
    filter: none;
    transform: translate3d(0, 0, 0) scale(1);
    transition:
      opacity var(--duration-base) var(--ease-emphasized),
      transform var(--duration-slow) var(--ease-emphasized),
      filter var(--duration-base) var(--ease-smooth);
  }

  .js .fade-in:not(.visible),
  .js .fade-in-left:not(.visible),
  .js .fade-in-right:not(.visible),
  .js .fade-in-scale:not(.visible) {
    opacity: 0;
    filter: blur(10px);
    transform: translate3d(var(--reveal-x), var(--reveal-y), 0) scale(var(--reveal-scale));
    will-change: opacity, transform, filter;
  }

  .fade-in-left {
    --reveal-x: -34px;
    --reveal-y: 0px;
  }

  .fade-in-right {
    --reveal-x: 34px;
    --reveal-y: 0px;
  }

  .fade-in-scale {
    --reveal-y: 24px;
    --reveal-scale: 0.96;
  }

  .js .fade-in.visible,
  .js .fade-in-left.visible,
  .js .fade-in-right.visible,
  .js .fade-in-scale.visible {
    opacity: 1;
    filter: blur(0);
    transform: translate3d(0, 0, 0) scale(1);
  }

  .delay-1 { transition-delay: 110ms; }
  .delay-2 { transition-delay: 220ms; }
  .delay-3 { transition-delay: 330ms; }
  .delay-4 { transition-delay: 440ms; }
  .delay-5 { transition-delay: 550ms; }

  /* ============ ANIMAÇÕES DE TEXTO (word-by-word) ============ */
  .text-reveal {
    display: inline;
    box-decoration-break: clone;
    -webkit-box-decoration-break: clone;
  }

  .text-reveal .word {
    display: inline-block;
  }

  .js .text-reveal .word {
    opacity: 0;
    filter: blur(8px);
    transform: translate3d(0, 105%, 0) rotate(0.001deg);
    transition:
      opacity 680ms var(--ease-emphasized),
      transform 820ms var(--ease-emphasized),
      filter 680ms var(--ease-smooth);
  }

  .js .text-reveal.visible .word {
    opacity: 1;
    filter: blur(0);
    transform: translate3d(0, 0, 0);
  }

  .text-reveal .word + .word { margin-left: 0; }

  /* ============ HIGHLIGHT (sublinha animado) ============ */
  .underline-reveal {
    background-image: linear-gradient(var(--verde-claro), var(--verde-claro));
    background-size: 0% 3px;
    background-position: 0 100%;
    background-repeat: no-repeat;
    transition: background-size 1s var(--ease-out-expo) 0.4s;
    padding-bottom: 4px;
  }

  .underline-reveal.visible { background-size: 100% 3px; }

  /* ============ LAYOUT GERAL ============ */
  section {
    scroll-margin-top: 84px;
  }

  /* ============ HEADER ============ */
  header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 12px clamp(20px, 4vw, 56px);
    display: flex;
    align-items: center;
    z-index: 1000;
    isolation: isolate;
    overflow: visible;
    background: transparent;
    border-bottom: 0;
    box-shadow: none;
    transition: padding 0.4s var(--ease-out-quart),
                background 0.4s var(--ease-out-quart),
                box-shadow 0.4s var(--ease-out-quart),
                backdrop-filter 0.4s var(--ease-out-quart);
  }

  header::before {
    content: '';
    position: absolute;
    inset: 0 0 -44px 0;
    z-index: 0;
    pointer-events: none;
    opacity: 1;
    transform: translateY(0);
    background: linear-gradient(180deg, rgba(255,255,255,0.88) 0%, rgba(255,255,255,0.62) 54%, rgba(255,255,255,0) 100%);
    transition:
      opacity var(--duration-base) var(--ease-smooth),
      transform var(--duration-base) var(--ease-smooth);
  }

  header .logo,
  header nav {
    position: relative;
    z-index: 1;
  }

  header.scrolled {
    background: rgba(255, 255, 255, 0.88);
    padding: 10px clamp(20px, 4vw, 56px);
    box-shadow: 0 10px 34px rgba(34, 49, 24, 0.10);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }

  header.scrolled::before {
    opacity: 0;
    transform: translateY(-18px);
  }

  .logo {
    display: inline-flex;
    align-items: center;
    flex: 0 0 auto;
  }

  .logo img {
    display: block;
    width: clamp(132px, 15vw, 176px);
    height: auto;
  }

  nav {
    flex: 1;
    display: flex;
    justify-content: center;
  }

  nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
  }

  nav ul li a {
    color: var(--verde-escuro);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    text-transform: uppercase;
    position: relative;
    transition: color 0.35s var(--ease-out-quart);
  }

  nav ul li a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 100%;
    height: 2px;
    background: var(--verde-claro);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s var(--ease-out-expo);
  }

  nav ul li a:hover { color: var(--verde-claro); }

  nav ul li a:hover::after {
    transform: scaleX(1);
    transform-origin: left;
  }

  /* ============ HERO ============ */
  .hero {
    min-height: 100svh;
    height: auto;
    background: url('../img/hero-produtora-rural.jpg') center/cover no-repeat;
    background-position: center calc(50% + var(--hero-drift, 0px));
    display: flex;
    align-items: center;
    padding: 0 80px;
    position: relative;
    isolation: isolate;
    box-shadow: inset 0 -140px 120px rgba(45, 74, 31, 0.12);
    transition: background-position 80ms linear;
  }

  .hero::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
      linear-gradient(90deg, rgba(255,255,255,0.86) 0%, rgba(255,255,255,0.52) 38%, rgba(255,255,255,0.12) 72%),
      radial-gradient(circle at 18% 42%, rgba(168,208,85,0.18), transparent 34%);
  }

  .hero::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.045'/%3E%3C/svg%3E");
    mix-blend-mode: multiply;
  }

  .hero-content {
    width: min(760px, 92vw);
    max-width: min(600px, 100%);
    color: var(--verde-escuro);
    position: relative;
    z-index: 1;
    transform: translate3d(0, calc(var(--hero-content-drift, 0px) * -1), 0);
  }

  .hero-content h1 {
    font-size: clamp(42px, 5vw, 62px);
    font-weight: 800;
    line-height: 1.04;
    max-width: 12ch;
    margin-bottom: 20px;
    color: var(--verde-escuro);
    text-shadow: 0 18px 45px rgba(255,255,255,0.42);
  }

  .hero-content p {
    font-size: 20px;
    max-width: min(58ch, 100%);
    margin-bottom: 30px;
    color: var(--texto);
    text-shadow: 0 18px 45px rgba(255,255,255,0.42);
    overflow-wrap: break-word;
  }

  /* ============ BOTÕES ============ */
  .btn {
    display: inline-block;
    position: relative;
    overflow: hidden;
    background: var(--verde-claro);
    color: var(--branco);
    padding: 15px 35px;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 14px;
    transition: background 0.4s var(--ease-out-quart),
                transform 0.4s var(--ease-out-expo),
                box-shadow 0.4s var(--ease-out-quart);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(139, 195, 74, 0.25);
    transform: translateZ(0);
  }

  .btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent 0%, rgba(255,255,255,0.25) 45%, transparent 70%);
    transform: translateX(-120%);
    transition: transform 720ms var(--ease-smooth);
  }

  .btn:hover::before,
  .btn:focus-visible::before {
    transform: translateX(120%);
  }

  .btn:hover {
    background: var(--verde-medio);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(74, 107, 42, 0.35);
  }

  .btn:active { transform: translateY(-1px); }

  .btn-outline {
    background: transparent;
    color: var(--verde-escuro);
    border: 1px solid rgba(45, 74, 31, 0.26);
    box-shadow: none;
  }

  .btn-outline:hover,
  .btn-outline:focus-visible {
    background: rgba(45, 74, 31, 0.08);
    color: var(--verde-escuro);
    box-shadow: 0 10px 28px rgba(45, 74, 31, 0.12);
  }

  /* ============ SOBRE ============ */
  .sobre {
    padding: 100px 80px;
    background: var(--branco);
    text-align: center;
  }

  .sobre h2 {
    font-size: 42px;
    color: var(--verde-escuro);
    margin-bottom: 20px;
    font-weight: 800;
  }

  .sobre .subtitle {
    color: var(--verde-claro);
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 15px;
    font-weight: 600;
    display: block;
  }

  .sobre p {
    max-width: 900px;
    margin: 0 auto 30px;
    font-size: 17px;
    color: var(--texto-claro);
  }

  /* ============ PRODUTOS ============ */
  .produtos {
    padding: 100px clamp(22px, 5vw, 80px);
    background: linear-gradient(180deg, #f7f3ea 0%, #fbfcf7 100%);
  }

  .produtos-header {
    text-align: center;
    max-width: 860px;
    margin: 0 auto clamp(34px, 5vw, 58px);
  }

  .produtos-header h2 {
    font-size: 42px;
    color: var(--verde-escuro);
    font-weight: 800;
    margin-bottom: 15px;
  }

  .produtos-header p {
    font-size: 17px;
    color: var(--texto-claro);
    max-width: 800px;
    margin: 0 auto;
  }

  .produtos-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(16px, 1.8vw, 26px);
    max-width: 1400px;
    margin: 0 auto;
  }

  .produto-card {
    position: relative;
    height: clamp(312px, 34vw, 408px);
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    isolation: isolate;
    background: #162911;
    contain: paint;
    box-shadow: 0 14px 34px rgba(27, 45, 20, 0.16);
    transform: translate3d(0, 0, 0);
    transition: transform 0.5s var(--ease-out-expo),
                box-shadow 0.5s var(--ease-out-expo);
  }

  .produto-card:hover,
  .produto-card:focus-within {
    transform: translateY(-10px) scale(1.01);
    box-shadow: var(--shadow-hover);
  }

  .produto-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    will-change: transform;
    backface-visibility: hidden;
    transform: scale(1);
    transition: transform 0.8s var(--ease-out-expo);
  }

  .produto-card:hover img,
  .produto-card:focus-within img {
    transform: scale(1.06);
  }

  .produto-card::before {
    content: '';
    position: absolute;
    inset: 14px;
    z-index: 2;
    pointer-events: none;
    border: 1px solid rgba(255,255,255,0.64);
    border-radius: 6px;
    opacity: 0;
    transform: scale(0.985);
    transition:
      opacity var(--duration-base) var(--ease-smooth),
      transform var(--duration-slow) var(--ease-emphasized);
  }

  .produto-card.visible::before,
  .produto-card:hover::before,
  .produto-card:focus-within::before {
    opacity: 1;
    transform: scale(1);
  }

  .produto-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(45,74,31,0.02) 0%, rgba(45,74,31,0.18) 52%, rgba(21,31,16,0.62) 100%);
    opacity: 0;
    transition: opacity var(--duration-base) var(--ease-smooth);
    pointer-events: none;
  }

  .produto-card.visible::after,
  .produto-card:hover::after,
  .produto-card:focus-within::after {
    opacity: 1;
  }

  .produto-card .overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: clamp(22px, 2.6vw, 32px);
    background: linear-gradient(180deg, transparent 0%, rgba(4, 15, 6, 0.88) 100%);
    color: var(--branco);
    z-index: 1;
    transform: translateY(0);
    transition:
      transform var(--duration-base) var(--ease-emphasized),
      background var(--duration-base) var(--ease-smooth);
  }

  .js .produto-card .overlay {
    transform: translateY(18px);
  }

  .produto-card .overlay::before {
    content: '';
    position: absolute;
    left: clamp(22px, 2.6vw, 32px);
    top: 12px;
    width: 52px;
    height: 3px;
    border-radius: 999px;
    background: var(--verde-lima);
    opacity: 0;
    transform: scaleX(0);
    transform-origin: left;
    transition:
      opacity 520ms var(--ease-smooth),
      transform 720ms var(--ease-emphasized);
  }

  .produto-card.visible .overlay::before,
  .produto-card:hover .overlay::before,
  .produto-card:focus-within .overlay::before {
    opacity: 1;
    transform: scaleX(1);
  }

  .produto-card .overlay h3 {
    font-size: clamp(22px, 2vw, 28px);
    line-height: 1.08;
    margin-bottom: 8px;
    font-weight: 700;
    opacity: 1;
    transform: translateY(0);
    transition:
      opacity 620ms var(--ease-smooth),
      transform 760ms var(--ease-emphasized);
  }

  .js .produto-card .overlay h3 {
    opacity: 0;
    transform: translateY(16px);
  }

  .produto-card .overlay p {
    font-size: 14px;
    line-height: 1.45;
    opacity: 1;
    transform: translateY(0);
    transition:
      opacity 620ms var(--ease-smooth),
      transform 760ms var(--ease-emphasized);
    transition-delay: 90ms;
  }

  .js .produto-card .overlay p {
    opacity: 0;
    transform: translateY(16px);
  }

  .produto-card.visible .overlay,
  .produto-card:hover .overlay,
  .produto-card:focus-within .overlay {
    transform: translateY(0);
  }

  .produto-card.visible .overlay h3,
  .produto-card.visible .overlay p,
  .produto-card:hover .overlay h3,
  .produto-card:hover .overlay p,
  .produto-card:focus-within .overlay h3,
  .produto-card:focus-within .overlay p {
    opacity: 1;
    transform: translateY(0);
  }

  /* ============ STIHL BANNER ============ */
  .stihl-banner {
    height: 300px;
    background: url('../img/banner-stihl.jpg') center/cover no-repeat;
    background-position: center calc(50% + var(--section-drift, 0px));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
  }

  .stihl-banner::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.4);
    transition: background var(--duration-base) var(--ease-smooth);
  }

  .stihl-banner.visible::before {
    background: rgba(0,0,0,0.34);
  }

  .stihl-banner-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--branco);
  }

  .stihl-banner-content h2 {
    font-size: 38px;
    margin-bottom: 15px;
    font-weight: 800;
  }

  .stihl-banner-content p {
    font-size: 18px;
    margin-bottom: 25px;
  }

  /* ============ INSTITUCIONAL ============ */
  .institucional {
    padding: 100px 80px;
    background: url('../img/institucional-campo.jpg') center/cover no-repeat;
    background-position: center calc(50% + var(--section-drift, 0px));
    position: relative;
    color: var(--branco);
    text-align: center;
  }

  .institucional::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(45, 74, 31, 0.85);
  }

  .institucional-content {
    position: relative;
    z-index: 1;
    max-width: 1100px;
    margin: 0 auto;
  }

  .institucional h2 {
    font-size: 42px;
    margin-bottom: 20px;
    font-weight: 800;
  }

  .institucional > .institucional-content > p {
    font-size: 18px;
    margin-bottom: 50px;
    opacity: 0.95;
  }

  .pilares {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 50px;
  }

  .pilar {
    background: rgba(255,255,255,0.1);
    padding: 35px 25px;
    border-radius: 8px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.22);
    transition:
      transform var(--duration-base) var(--ease-emphasized),
      box-shadow var(--duration-base) var(--ease-smooth),
      border-color var(--duration-fast) var(--ease-smooth);
  }

  .pilar:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-soft);
    border-color: rgba(139, 195, 74, 0.34);
  }

  .pilar h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--verde-lima);
    font-weight: 700;
  }

  .pilar p {
    font-size: 15px;
    opacity: 0.95;
  }

  /* ============ CTA ============ */
  .cta {
    padding: 100px 80px;
    background: url('../img/cta-visita.jpg') center/cover no-repeat;
    background-position: center calc(50% + var(--section-drift, 0px));
    position: relative;
    text-align: center;
    color: var(--branco);
  }

  .cta::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.6);
    transition: background var(--duration-base) var(--ease-smooth);
  }

  .cta.visible::before {
    background: rgba(0,0,0,0.54);
  }

  .cta-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
  }

  .cta h2 {
    font-size: 42px;
    margin-bottom: 20px;
    font-weight: 800;
  }

  .cta p {
    font-size: 18px;
    margin-bottom: 35px;
  }

  /* ============ CONTATO ============ */
  .contato {
    padding: 100px clamp(22px, 5vw, 80px);
    background: linear-gradient(180deg, #f5f1e8 0%, #fbfcf7 100%);
  }

  .contato-grid {
    display: grid;
    grid-template-columns: minmax(0, 860px);
    justify-content: center;
    gap: 36px;
    max-width: 980px;
    margin: 0 auto;
  }

  .contato-info {
    text-align: center;
  }

  .contato-info h2 {
    font-size: 42px;
    color: var(--verde-escuro);
    margin-bottom: 20px;
    font-weight: 800;
  }

  .contato-info p {
    font-size: 17px;
    color: var(--texto-claro);
    margin-bottom: 30px;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
  }

  .contato-item {
    margin-bottom: 25px;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
    padding: 18px 22px;
    border: 1px solid var(--line-soft);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.78);
    box-shadow: 0 12px 30px rgba(35, 52, 26, 0.08);
    transition:
      border-color var(--duration-fast) var(--ease-smooth),
      box-shadow var(--duration-fast) var(--ease-smooth),
      transform var(--duration-fast) var(--ease-emphasized);
  }

  .contato-item:hover {
    border-color: rgba(139, 195, 74, 0.34);
    box-shadow: 0 16px 36px rgba(35, 52, 26, 0.12);
    transform: translateY(-2px);
  }

  .contato-item strong {
    display: block;
    color: var(--verde-escuro);
    font-size: 16px;
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 1px;
  }

  .contato-item span {
    color: var(--texto);
    font-size: 17px;
  }

  .contato-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-top: 34px;
  }

  /* ============ FOOTER ============ */
  footer {
    background: var(--verde-escuro);
    color: var(--branco);
    padding: 60px 80px 30px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    max-width: 1300px;
    margin: 0 auto 40px;
  }

  .footer-logo {
    display: block;
    width: 150px;
    height: auto;
    margin-bottom: 18px;
    filter: brightness(0) invert(1);
  }

  .footer-col h4 {
    color: var(--verde-lima);
    font-size: 16px;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
  }

  .footer-col p,
  .footer-col li {
    font-size: 14px;
    margin-bottom: 10px;
    opacity: 0.9;
  }

  .footer-col ul { list-style: none; }

  .footer-col ul li a {
    color: var(--branco);
    text-decoration: none;
    opacity: 0.85;
    transition:
      opacity 0.3s var(--ease-smooth),
      color 0.3s var(--ease-smooth);
  }

  .footer-col ul li a:hover {
    opacity: 1;
    color: var(--verde-lima);
  }

  .footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.2);
    font-size: 13px;
    opacity: 0.8;
  }

  /* ============ MENU MOBILE TOGGLE ============ */
  .menu-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
  }

  .menu-toggle span {
    display: block;
    width: 28px;
    height: 3px;
    background: var(--verde-escuro);
    margin: 5px 0;
    border-radius: 2px;
    transition:
      transform var(--duration-fast) var(--ease-smooth),
      opacity var(--duration-fast) var(--ease-smooth),
      background var(--duration-fast) var(--ease-smooth);
  }

  .menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  /* ============ BOTÃO VOLTAR AO TOPO ============ */
  .back-to-top {
    position: fixed;
    right: auto;
    left: calc(100vw - 80px);
    bottom: 100px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--verde-claro);
    color: var(--branco);
    border: none;
    cursor: pointer;
    font-size: 22px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    opacity: 0;
    visibility: hidden;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateY(16px) scale(0.92);
    transition:
      opacity var(--duration-fast) var(--ease-smooth),
      visibility var(--duration-fast) var(--ease-smooth),
      transform var(--duration-fast) var(--ease-emphasized),
      background var(--duration-fast) var(--ease-smooth),
      box-shadow var(--duration-fast) var(--ease-smooth);
  }

  .back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
  }

  .back-to-top:hover {
    background: var(--verde-medio);
    transform: translateY(-4px) scale(1.03);
    box-shadow: var(--shadow-hover);
  }

  /* ============ WHATSAPP FLOAT ============ */
  .whatsapp-float {
    position: fixed;
    right: auto;
    left: calc(100vw - 84px);
    bottom: 24px;
    z-index: 998;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: none;
    background: #25d366;
    color: #fff;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
    transform: translate3d(0, 0, 0);
    transition:
      transform var(--duration-fast) var(--ease-emphasized),
      box-shadow var(--duration-fast) var(--ease-smooth);
  }

  .whatsapp-float svg {
    width: 32px;
    height: 32px;
  }

  .whatsapp-float:hover,
  .whatsapp-float:focus-visible {
    background: #22c35e;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.30);
    transform: translateY(-3px) scale(1.04);
  }

  .whatsapp-float:active {
    transform: translateY(-1px) scale(0.98);
  }

  /* ============ FOCUS VISIBLE ============ */
  .btn:focus-visible,
  nav ul li a:focus-visible,
  .menu-toggle:focus-visible,
  .whatsapp-float:focus-visible,
  .back-to-top:focus-visible {
    outline: 3px solid rgba(139, 195, 74, 0.45);
    outline-offset: 4px;
  }

  /* ============ LOADER ============ */
  #loader {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 9999;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 18px;
    background:
      radial-gradient(circle at 50% 42%, rgba(168, 208, 85, 0.15), transparent 34%),
      linear-gradient(135deg, #203817 0%, #2d4a1f 52%, #16250f 100%);
    color: var(--branco);
    opacity: 1;
    visibility: visible;
    transition:
      opacity 820ms var(--ease-smooth),
      visibility 820ms var(--ease-smooth);
  }

  .js body.loader-active #loader {
    display: flex;
  }

  #loader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }

  .loader-name {
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1;
    text-shadow: 0 18px 44px rgba(0,0,0,0.32);
    opacity: 0;
    transform: translateY(12px);
    animation: loaderNameIn 900ms var(--ease-emphasized) 120ms forwards;
  }

  .loader-line {
    width: min(180px, 42vw);
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--verde-lima), transparent);
    transform: scaleX(0);
    transform-origin: center;
    animation: loaderLineGrow 1200ms var(--ease-emphasized) 260ms forwards;
  }

  .js body.loader-active {
    overflow: hidden;
  }

  @keyframes loaderNameIn {
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  @keyframes loaderLineGrow {
    to {
      transform: scaleX(1);
    }
  }

  /* ============ HERO PREPARING STATE ============ */
  .js body.hero-preparing .hero .fade-in.visible,
  .js body.hero-preparing .hero .fade-in-left.visible,
  .js body.hero-preparing .hero .fade-in-right.visible,
  .js body.hero-preparing .hero .fade-in-scale.visible {
    opacity: 0;
    filter: blur(12px);
    transform: translate3d(-34px, 0, 0) scale(1);
  }

  .js body.hero-preparing .hero .text-reveal.visible .word {
    opacity: 0;
    filter: blur(8px);
    transform: translate3d(0, 105%, 0);
  }

  /* ============ MEDIA QUERIES ============ */
  @media (max-width: 1024px) {
    .produtos-grid {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .pilares { grid-template-columns: 1fr; }
    .contato-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
  }

  @media (max-width: 768px) {
    .menu-toggle { display: block; }

    nav ul {
      display: flex;
      position: fixed;
      top: 0;
      right: 0;
      width: min(82vw, 340px);
      height: 100dvh;
      background: var(--branco);
      flex-direction: column;
      padding: 80px 30px;
      box-shadow: -5px 0 20px rgba(0,0,0,0.1);
      gap: 15px;
      font-size: 12px;
      opacity: 0;
      visibility: hidden;
      pointer-events: none;
      transform: translateX(100%);
      transition:
        opacity var(--duration-fast) var(--ease-smooth),
        visibility var(--duration-fast) var(--ease-smooth),
        transform 420ms var(--ease-emphasized);
    }

    nav ul.active {
      opacity: 1;
      visibility: visible;
      pointer-events: auto;
      transform: translateX(0);
    }

    nav ul li a { font-size: 12px; }

    header { padding: 15px 20px; flex-wrap: wrap; }

    nav {
      flex: 0 0 auto;
      justify-content: flex-end;
    }

    .hero {
      background: url('../img/hero-mobile.jpg') center/cover no-repeat;
      padding: 0 25px;
    }

    .hero-content {
      width: 100%;
      max-width: 100%;
    }

    .hero-content h1 {
      font-size: 36px;
      max-width: 11ch;
    }

    .hero-content p {
      font-size: 16px;
      max-width: 31ch;
    }

    .sobre, .institucional, .cta, footer {
      padding: 60px 25px;
    }

    .produtos, .contato {
      padding: 60px 25px;
    }

    .sobre h2, .produtos-header h2, .institucional h2,
    .cta h2, .contato-info h2 { font-size: 30px; }

    .produtos-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }

    .fade-in-left,
    .fade-in-right {
      --reveal-x: 0px;
      --reveal-y: 28px;
    }

    .whatsapp-float {
      left: calc(100vw - 74px);
      bottom: 18px;
      width: 56px;
      height: 56px;
    }

    .whatsapp-float svg {
      width: 30px;
      height: 30px;
    }

    .back-to-top {
      left: calc(100vw - 67px);
      bottom: 86px;
      width: 46px;
      height: 46px;
    }
  }

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

    .fade-in,
    .fade-in-left,
    .fade-in-right,
    .fade-in-scale,
    .text-reveal .word,
    .produto-card .overlay,
    .produto-card .overlay h3,
    .produto-card .overlay p {
      opacity: 1 !important;
      filter: none !important;
      transform: none !important;
    }

    .hero,
    .hero-content,
    .stihl-banner,
    .cta,
    .institucional {
      background-position: center center !important;
      transform: none !important;
    }

    #loader,
    .loader-name,
    .loader-line {
      animation: none !important;
      transition: none !important;
    }

    #loader {
      display: none !important;
    }

    .js body.hero-preparing .hero .fade-in.visible,
    .js body.hero-preparing .hero .fade-in-left.visible,
    .js body.hero-preparing .hero .fade-in-right.visible,
    .js body.hero-preparing .hero .fade-in-scale.visible,
    .js body.hero-preparing .hero .text-reveal.visible .word {
      opacity: 1 !important;
      filter: none !important;
      transform: none !important;
    }
  }