:root {
  --ink: #0d1b2a;
  --ink-soft: #3f4d5c;
  --muted: #6b7a89;
  --bg: #f6f8fb;
  --bg-alt: #e9eff6;
  --card: #ffffff;
  --line: #d9e2ec;
  --brand: #0b70a8;       /* azul celeste del logo */
  --brand-dark: #0a3058;  /* azul marino del logo */
  --brand-light: #6cbbe8; /* celeste claro para fondos oscuros */
  --stone: #6f6a63;
  --dark: #0a2440;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(10, 48, 88, .10);
  --font-head: "Archivo", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--font-head); line-height: 1.15; margin: 0 0 .5em; }
h1 { font-size: clamp(2.2rem, 5.5vw, 4rem); font-weight: 800; letter-spacing: -.02em; }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.5rem); font-weight: 800; letter-spacing: -.01em; }
h3 { font-size: 1.25rem; font-weight: 700; }
p { margin: 0 0 1em; }

.container { width: min(1180px, 100% - 32px); margin-inline: auto; }

.eyebrow {
  font-family: var(--font-head);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .14em;
  font-size: .78rem;
  color: var(--brand);
  margin-bottom: .8em;
}

/* Buttons */
.btn {
  display: inline-block;
  background: var(--brand);
  color: #fff;
  font-family: var(--font-head);
  font-weight: 700;
  text-decoration: none;
  padding: .9em 1.6em;
  border-radius: 999px;
  border: 2px solid var(--brand);
  cursor: pointer;
  font-size: 1rem;
  transition: background .2s, transform .2s;
}
.btn:hover { background: var(--brand-dark); border-color: var(--brand-dark); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.6); }
.btn-ghost:hover { background: rgba(255,255,255,.12); border-color: #fff; }
.btn-small { padding: .55em 1.2em; font-size: .9rem; }
.btn-block { width: 100%; }

/* Logo */
.logo { display: inline-flex; align-items: center; gap: .6rem; text-decoration: none; }
.logo-img { height: 46px; width: auto; }
.logo-footer { background: #fff; padding: 6px 12px; border-radius: 10px; }
.logo-footer .logo-img { height: 38px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.main-nav { display: flex; align-items: center; gap: 1.8rem; }
.main-nav a:not(.btn) { text-decoration: none; font-weight: 500; color: var(--ink-soft); }
.main-nav a:not(.btn):hover { color: var(--brand); }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0; transition: .3s; }

/* Hero */
.hero {
  position: relative;
  background: var(--dark);
  color: #fff;
  padding: clamp(4rem, 10vw, 8rem) 0 clamp(3rem, 7vw, 5rem);
  overflow: hidden;
}
.hero-pattern {
  position: absolute; inset: 0;
  opacity: .22;
  background-color: #16406b;
  background-image:
    linear-gradient(90deg, var(--dark) 3px, transparent 3px),
    linear-gradient(var(--dark) 3px, transparent 3px),
    linear-gradient(90deg, transparent 50%, rgba(11, 112, 168, .55) 50%);
  background-size: 80px 40px, 80px 40px, 160px 80px;
  mask-image: linear-gradient(100deg, transparent 20%, #000 90%);
  -webkit-mask-image: linear-gradient(100deg, transparent 20%, #000 90%);
}
.hero-inner { position: relative; max-width: 1180px; }
.hero h1 { max-width: 14ch; }
.hero .lead { font-size: clamp(1.05rem, 1.6vw, 1.25rem); max-width: 56ch; color: #d3dde8; }
.hero .eyebrow { color: var(--brand-light); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin: 2rem 0 3rem; }
.hero-stats { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 2.5rem; border-top: 1px solid rgba(255,255,255,.15); padding-top: 1.8rem; }
.hero-stats strong { display: block; font-family: var(--font-head); font-size: 1.6rem; }
.hero-stats span { color: #a9b8c8; font-size: .92rem; }

/* Sections */
.section { padding: clamp(4rem, 8vw, 6.5rem) 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--dark); color: #fff; }
.section-dark .eyebrow { color: var(--brand-light); }
.section-head { max-width: 640px; margin-bottom: 2.8rem; }
.section-sub { color: var(--muted); }

/* Paver patterns (used as visuals / placeholders) */
.pattern-pastelon {
  background-color: #c9c2b8;
  background-image:
    linear-gradient(90deg, #a79f94 4px, transparent 4px),
    linear-gradient(#a79f94 4px, transparent 4px);
  background-size: 70px 70px;
}
.pattern-adoquin {
  background-color: #b5532f;
  background-image:
    linear-gradient(#7d3a20 3px, transparent 3px),
    linear-gradient(90deg, #7d3a20 3px, transparent 3px),
    linear-gradient(90deg, #7d3a20 3px, transparent 3px);
  background-size: 60px 30px, 60px 60px, 60px 60px;
  background-position: 0 0, 0 0, 30px 30px;
}
.pattern-install {
  background-color: #6f6a63;
  background-image:
    repeating-linear-gradient(45deg, rgba(255,255,255,.08) 0 12px, transparent 12px 24px),
    linear-gradient(90deg, #555049 3px, transparent 3px),
    linear-gradient(#555049 3px, transparent 3px);
  background-size: auto, 90px 45px, 90px 45px;
}

/* Products */
.product-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
.product-card { background: var(--card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--line); }
.product-visual { height: 170px; overflow: hidden; }
.product-visual:has(img) { background: #fff; }
.product-visual img { width: 100%; height: 100%; object-fit: cover; }
.product-body { padding: 1.6rem; }
.product-body p { color: var(--ink-soft); }
.checks { list-style: none; padding: 0; margin: 0; }
.checks li { padding-left: 1.6rem; position: relative; margin: .4rem 0; font-size: .95rem; }
.checks li::before { content: ""; position: absolute; left: 0; top: .45em; width: 10px; height: 10px; background: var(--brand); border-radius: 2px; }

/* Catalog */
.filters { display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: 2rem; }
.filter {
  font: inherit; font-weight: 600;
  background: transparent; border: 1.5px solid var(--line); color: var(--ink-soft);
  padding: .5em 1.2em; border-radius: 999px; cursor: pointer;
}
.filter:hover { border-color: var(--brand); color: var(--brand); }
.filter.active { background: var(--brand-dark); border-color: var(--brand-dark); color: #fff; }
.catalog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1.5rem; }
.catalog-item {
  background: var(--card); border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); display: flex; flex-direction: column;
  transition: transform .25s, box-shadow .25s;
}
.catalog-open { all: unset; cursor: pointer; display: block; flex: 1; }
.catalog-open:focus-visible { outline: 3px solid var(--brand); outline-offset: -3px; }
.catalog-item:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.catalog-item[hidden] { display: none; }
.catalog-grid.collapsed .catalog-item:nth-child(n+13) { display: none; }
.catalog-more { text-align: center; margin-top: 2rem; }
.catalog-more[hidden] { display: none; }
.btn-ghost-dark { background: transparent; color: var(--brand-dark); border-color: var(--brand-dark); }
.btn-ghost-dark:hover { background: var(--brand-dark); color: #fff; }
.catalog-empty { text-align: center; color: var(--muted); padding: 2rem 0; }
.catalog-empty[hidden] { display: none; }
.catalog-thumb { aspect-ratio: 1 / 1; overflow: hidden; position: relative; }
.catalog-thumb { background: #fff; }
.catalog-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.catalog-item:hover .catalog-thumb img { transform: scale(1.04); }
.catalog-thumb .placeholder { width: 100%; height: 100%; }
.catalog-tag {
  position: absolute; top: 10px; left: 10px;
  background: rgba(10,48,88,.88); color: #fff; font-size: .72rem; font-weight: 600;
  padding: .25em .7em; border-radius: 999px; text-transform: uppercase; letter-spacing: .06em;
}
.catalog-info { padding: 1rem 1.2rem 1.2rem; }
.catalog-info h3 { font-size: 1.05rem; margin-bottom: .2em; }
.catalog-info p { font-size: .88rem; color: var(--muted); margin: 0; }

/* Botón agregar a cotización */
.btn-add {
  font: inherit; font-weight: 600; font-size: .9rem; cursor: pointer;
  margin: 0 1.2rem 1.2rem; padding: .6em 1em; border-radius: 999px;
  background: transparent; color: var(--brand); border: 1.5px solid var(--brand);
  transition: background .2s, color .2s;
}
.btn-add:hover { background: var(--brand); color: #fff; }
.btn-add-inline { margin: 1.2rem 0 0; }

/* Botón carrito en el encabezado */
.header-inner { gap: 1rem; }
.header-inner .logo { margin-right: auto; }
.cart-btn {
  position: relative; display: inline-flex; align-items: center; gap: .45rem;
  font: inherit; font-weight: 600; color: var(--brand-dark); cursor: pointer;
  background: var(--bg-alt); border: 0; border-radius: 999px; padding: .5em 1em;
}
.cart-btn:hover { background: var(--line); }
.cart-btn svg { width: 22px; height: 22px; }
.cart-count {
  min-width: 22px; height: 22px; padding: 0 6px; border-radius: 999px;
  background: var(--brand); color: #fff; font-size: .78rem; font-weight: 700;
  display: inline-grid; place-items: center;
}
.cart-count[hidden] { display: none; }

/* Panel del carrito */
.carrito { position: fixed; inset: 0; z-index: 120; }
.carrito[hidden] { display: none; }
.carrito-fondo { position: absolute; inset: 0; background: rgba(7, 26, 46, .5); opacity: 0; transition: opacity .25s; }
.carrito-panel {
  position: absolute; top: 0; right: 0; bottom: 0; width: min(440px, 100%);
  background: var(--bg); display: flex; flex-direction: column;
  transform: translateX(100%); transition: transform .25s ease;
  box-shadow: -10px 0 40px rgba(7, 26, 46, .2);
}
.carrito.open .carrito-fondo { opacity: 1; }
.carrito.open .carrito-panel { transform: none; }
.carrito-head { display: flex; align-items: center; justify-content: space-between; padding: 1.1rem 1.4rem; border-bottom: 1px solid var(--line); background: #fff; }
.carrito-head h2 { font-size: 1.3rem; margin: 0; }
.carrito-cerrar { background: none; border: 0; font-size: 2rem; line-height: 1; cursor: pointer; color: var(--ink-soft); }
.carrito-body { overflow-y: auto; padding: 1.2rem 1.4rem 2rem; flex: 1; }
.carrito-vacio { text-align: center; padding: 3rem 0; color: var(--muted); }
.carrito-vacio[hidden] { display: none; }
.carrito-lista { list-style: none; padding: 0; margin: 0 0 1.2rem; display: flex; flex-direction: column; gap: .8rem; }
.carrito-item { display: flex; gap: .9rem; align-items: flex-start; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: .8rem; }
.carrito-item img { width: 64px; height: 64px; object-fit: cover; border-radius: 8px; flex-shrink: 0; background: #fff; }
.carrito-item-info { flex: 1; min-width: 0; }
.carrito-item-info strong { display: block; font-family: var(--font-head); }
.carrito-item-detalle { display: block; font-size: .82rem; color: var(--muted); }
.carrito-m2 { display: inline-flex; align-items: center; gap: .4rem; margin-top: .5rem; font-size: .9rem; font-weight: 600; }
.carrito-m2 input { width: 90px; font: inherit; padding: .35em .6em; border: 1.5px solid var(--line); border-radius: 8px; }
.carrito-m2 input:focus { outline: none; border-color: var(--brand); }
.carrito-subtotal { display: block; font-size: .85rem; color: var(--brand-dark); font-weight: 600; margin-top: .3rem; }
.carrito-subtotal:empty { display: none; }
.carrito-quitar { background: none; border: 0; font-size: 1.4rem; line-height: 1; cursor: pointer; color: var(--muted); padding: 0 .2rem; }
.carrito-quitar:hover { color: #c0392b; }
.carrito-form[hidden] { display: none; }
.carrito-total { font-size: 1.05rem; padding: .8rem 1rem; background: var(--bg-alt); border-radius: 10px; }
.carrito-total[hidden] { display: none; }
.carrito-nota { font-size: .85rem; color: var(--muted); }
.carrito-vaciar { display: block; margin: 1rem auto 0; background: none; border: 0; color: var(--muted); text-decoration: underline; cursor: pointer; font: inherit; font-size: .85rem; }

/* Aviso "agregado" */
.aviso {
  position: fixed; left: 50%; bottom: 24px; z-index: 110;
  transform: translate(-50%, 20px); opacity: 0; transition: opacity .25s, transform .25s;
  display: flex; align-items: center; gap: 1rem;
  background: var(--brand-dark); color: #fff; padding: .8rem .9rem .8rem 1.2rem; border-radius: 999px;
  box-shadow: 0 10px 30px rgba(7, 26, 46, .3); width: max-content; max-width: calc(100% - 32px);
}
.aviso[hidden] { display: none; }
.aviso.show { opacity: 1; transform: translate(-50%, 0); }
.aviso span { font-size: .92rem; }
.aviso button { font: inherit; font-weight: 700; font-size: .85rem; background: #fff; color: var(--brand-dark); border: 0; border-radius: 999px; padding: .45em 1em; cursor: pointer; white-space: nowrap; }

/* Botón agregar dentro del visor de fotos */
.lightbox-add[hidden] { display: none; }
.lightbox-add { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); }

/* Fabricación propia y diseños a pedido */
.fabricacion-intro { display: grid; grid-template-columns: 1fr 1.1fr; gap: 3rem; align-items: start; margin-bottom: 3rem; }
.fabricacion-intro > div:first-child p:not(.eyebrow) { color: #c7d3e0; font-size: 1.08rem; }
.pedido { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14); border-radius: var(--radius); padding: 2rem; }
.pedido h3 { font-size: 1.45rem; }
.pedido > p:not(.eyebrow) { color: #c7d3e0; }
.pedido-pasos { list-style: none; padding: 0; margin: 1.4rem 0 1.8rem; display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; counter-reset: paso; }
.pedido-pasos li { counter-increment: paso; padding-left: 2.6rem; position: relative; }
.pedido-pasos li::before {
  content: counter(paso); position: absolute; left: 0; top: 0;
  width: 1.9rem; height: 1.9rem; border-radius: 50%; display: grid; place-items: center;
  background: var(--brand); color: #fff; font-family: var(--font-head); font-weight: 800; font-size: .9rem;
}
.pedido-pasos strong { display: block; font-family: var(--font-head); }
.pedido-pasos span { color: #a9b8c8; font-size: .9rem; }
.proceso-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.proceso-foto { all: unset; cursor: pointer; position: relative; border-radius: 12px; overflow: hidden; aspect-ratio: 3 / 4; display: block; }
.proceso-foto:focus-visible { outline: 3px solid var(--brand-light); outline-offset: 2px; }
.proceso-foto img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.proceso-foto:hover img { transform: scale(1.05); }
.proceso-foto span {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 1.6rem .9rem .8rem;
  background: linear-gradient(transparent, rgba(7, 26, 46, .85)); color: #fff; font-size: .85rem; font-weight: 600;
}
@media (max-width: 880px) {
  .fabricacion-intro { grid-template-columns: 1fr; gap: 2rem; }
  .proceso-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .pedido { padding: 1.4rem; }
  .pedido-pasos { grid-template-columns: 1fr; }
}

/* Steps */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.5rem; counter-reset: none; }
.steps li { padding: 1.8rem; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); position: relative; }
.step-num { font-family: var(--font-head); font-weight: 800; font-size: 2.2rem; color: var(--brand); display: block; margin-bottom: .4rem; }
.steps p { color: var(--ink-soft); margin: 0; }

/* About */
.about { display: grid; grid-template-columns: 1.1fr 1fr; gap: 4rem; align-items: center; }
.about p { color: #c7d3e0; font-size: 1.08rem; }
.benefits { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.benefits li { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius); padding: 1.3rem; }
.benefits strong { display: block; font-family: var(--font-head); margin-bottom: .3rem; }
.benefits span { color: #a9b8c8; font-size: .92rem; }

/* Obras realizadas */
#obras[hidden] { display: none; }
.obras-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; }
.obras-grid.collapsed .obra:nth-child(n+10) { display: none; }
.obra-open { all: unset; cursor: pointer; display: block; overflow: hidden; }
.obra-open:focus-visible { outline: 3px solid var(--brand); outline-offset: -3px; }
.obra-open img { transition: transform .4s; }
.obra:hover .obra-open img { transform: scale(1.04); }
.obra { margin: 0; background: var(--card); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.obra img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.obra figcaption { padding: 1rem 1.2rem; }
.obra strong { display: block; font-family: var(--font-head); }
.obra span { color: var(--muted); font-size: .9rem; }

/* Preguntas frecuentes */
.faq { max-width: 860px; }
.faq-list { display: flex; flex-direction: column; gap: .8rem; }
.faq-item { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 0 1.4rem; }
.faq-item summary {
  cursor: pointer; list-style: none; padding: 1.1rem 2rem 1.1rem 0; position: relative;
  font-family: var(--font-head); font-weight: 700; font-size: 1.05rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; position: absolute; right: 0; top: 50%; transform: translateY(-50%);
  font-size: 1.5rem; font-weight: 500; color: var(--brand); transition: transform .2s;
}
.faq-item[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq-item p { color: var(--ink-soft); margin: 0 0 1.2rem; }

/* Página por comuna */
.local-hero { padding: clamp(3.5rem, 8vw, 6rem) 0; }
.local-list { columns: 2; column-gap: 2rem; padding-left: 1.2rem; color: var(--ink-soft); }
@media (max-width: 560px) { .local-list { columns: 1; } }

/* Contact */
.contact { display: grid; grid-template-columns: 1fr 1.2fr; gap: 4rem; align-items: start; }
.contact-info > p { color: var(--ink-soft); }
.contact-list { list-style: none; padding: 0; margin: 2rem 0 0; }
.contact-list li { padding: .9rem 0; border-top: 1px solid var(--line); }
.contact-list span { display: block; font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); font-weight: 600; }
.contact-list a { text-decoration: none; font-weight: 600; }
.contact-list a:hover { color: var(--brand); }
.quote-form { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 2rem; box-shadow: var(--shadow); }
.field { display: flex; flex-direction: column; margin-bottom: 1.1rem; flex: 1; }
.field-row { display: flex; gap: 1rem; }
.field label { font-size: .88rem; font-weight: 600; margin-bottom: .35rem; }
.field input, .field select, .field textarea {
  font: inherit; padding: .75em .9em; border: 1.5px solid var(--line); border-radius: 10px; background: var(--bg); color: var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--brand); background: #fff; }
.checkbox { display: flex; align-items: center; gap: .5rem; margin-bottom: 1.1rem; font-weight: 500; }
.checkbox input { accent-color: var(--brand); width: 18px; height: 18px; }

/* Footer */
.site-footer { background: #071a2e; color: #fff; padding: 2.5rem 0; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1rem; }
.footer-inner p { margin: 0; color: #a9b8c8; }
.footer-inner p a { color: #fff; }
.footer-inner .muted { font-size: .85rem; color: #7f93a8; }

/* WhatsApp */
.whatsapp-float {
  position: fixed; right: 20px; bottom: 20px; z-index: 60;
  width: 58px; height: 58px; border-radius: 50%;
  background: #25d366; color: #fff; display: grid; place-items: center;
  box-shadow: 0 8px 24px rgba(0,0,0,.25); transition: transform .2s;
}
.whatsapp-float:hover { transform: scale(1.08); }
.whatsapp-float svg { width: 30px; height: 30px; }

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(7, 26, 46, .94);
  display: flex; align-items: center; justify-content: center; gap: 1rem; padding: 1rem;
}
.lightbox[hidden] { display: none; }
.lightbox figure { margin: 0; max-width: min(900px, 100%); width: 100%; }
.lightbox-media img, .lightbox-media .placeholder { width: 100%; max-height: 78vh; object-fit: contain; border-radius: 10px; }
.lightbox-media .placeholder { aspect-ratio: 4 / 3; }
.lightbox figcaption { color: #fff; text-align: center; margin-top: 1rem; }
.lightbox figcaption strong { display: block; font-family: var(--font-head); font-size: 1.2rem; }
.lightbox figcaption span { color: #a9b8c8; font-size: .92rem; }
.lightbox-close, .lightbox-nav { background: rgba(255,255,255,.1); color: #fff; border: 0; cursor: pointer; border-radius: 50%; }
.lightbox-close { position: absolute; top: 16px; right: 16px; width: 44px; height: 44px; font-size: 1.8rem; line-height: 1; }
.lightbox-nav { width: 48px; height: 48px; font-size: 2rem; line-height: 1; flex-shrink: 0; }
.lightbox-close:hover, .lightbox-nav:hover { background: rgba(255,255,255,.22); }

/* Responsive */
@media (max-width: 880px) {
  .nav-toggle { display: block; order: 3; }
  .cart-btn { order: 2; }
  .main-nav {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: .5rem 16px 1.2rem;
    display: none;
  }
  .main-nav.open { display: flex; }
  .main-nav a:not(.btn) { padding: .8rem 0; border-bottom: 1px solid var(--line); }
  .main-nav .btn { margin-top: 1rem; text-align: center; }
  .about, .contact { grid-template-columns: 1fr; gap: 2.5rem; }
}
@media (max-width: 560px) {
  .field-row { flex-direction: column; gap: 0; }
  .benefits { grid-template-columns: 1fr; }
  .hero-stats { gap: 1.5rem; }
  .lightbox-nav { position: absolute; bottom: 20px; }
  .cart-label { display: none; }
  .aviso span { font-size: .85rem; }
  .lightbox-nav.prev { left: 20px; }
  .lightbox-nav.next { right: 20px; }
  .quote-form { padding: 1.4rem; }
}