:root{
    --teal:#2ab1a8;
    --teal-osc:#1f8f88;
    --oscuro:#22333b;
    --oscuro-2:#1b2a30;
    --texto:#3a4650;
    --muted:#7c8791;
    --linea:#e6e9e8;
    --bg:#ffffff;
    --max:1180px;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  html,body{overflow-x:hidden;max-width:100%}
  body{
    font-family:'Montserrat',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
    color:var(--texto);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  .contenedor{max-width:var(--max);margin:0 auto;padding:0 24px}
  .btn-oscuro{display:inline-block;background:var(--oscuro);color:#fff;font-weight:500;
    letter-spacing:1px;text-transform:uppercase;font-size:14px;padding:16px 34px;border-radius:40px;
    transition:transform .18s ease, background .2s ease}
  .btn-oscuro:hover{background:#000;transform:translateY(-2px)}

  /* ---------- HEADER ---------- */
  header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--linea)}
  .header-in{display:flex;align-items:center;justify-content:space-between;height:84px;
    max-width:var(--max);margin:0 auto;padding:0 24px}
  .logo img{height:52px;width:auto}
  nav.principal>ul{display:flex;list-style:none;gap:38px;align-items:center}
  nav.principal a{font-size:15px;font-weight:500;letter-spacing:1px;text-transform:uppercase;
    color:var(--teal);transition:color .2s}
  nav.principal a:hover{color:var(--teal-osc)}
  .tiene-sub{position:relative}
  .tiene-sub>a::after{content:"\25BE";margin-left:7px;font-size:12px}
  .submenu{position:absolute;top:100%;left:-18px;background:#fff;min-width:270px;
    border:1px solid var(--linea);border-radius:8px;box-shadow:0 12px 34px rgba(34,51,59,.14);
    padding:8px 0;opacity:0;visibility:hidden;transform:translateY(8px);transition:.22s;list-style:none}
  .tiene-sub:hover .submenu{opacity:1;visibility:visible;transform:translateY(0)}
  .submenu a{display:block;padding:11px 22px;font-size:13px;letter-spacing:.5px;color:var(--texto)}
  .submenu a:hover{background:#f4faf9;color:var(--teal)}
  .hamburguesa{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
  .hamburguesa span{width:26px;height:3px;background:var(--teal);border-radius:3px;transition:.3s}

  /* ---------- HERO ---------- */
  .hero{position:relative;min-height:520px;display:flex;align-items:flex-end;overflow:hidden}
  .hero img.fondo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
  .hero::after{content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(20,30,34,.15) 0%,rgba(20,30,34,.15) 55%,rgba(20,30,34,.62) 100%)}
  .hero-in{position:relative;z-index:2;max-width:var(--max);margin:0 auto;width:100%;
    padding:0 24px 64px;color:#fff}
  .hero h1{font-size:clamp(2.6rem,6vw,4.6rem);font-weight:800;letter-spacing:2px;line-height:1;
    text-shadow:0 2px 18px rgba(0,0,0,.35)}
  .hero p{font-size:clamp(1.1rem,2.6vw,1.7rem);font-weight:300;letter-spacing:4px;
    text-transform:uppercase;margin-top:10px;text-shadow:0 2px 14px rgba(0,0,0,.35)}

  /* ---------- CLIENTES ---------- */
  .clientes{padding:64px 0 56px;text-align:center}
  .clientes h2{color:var(--teal);font-weight:600;letter-spacing:5px;text-transform:uppercase;
    font-size:clamp(1.3rem,3vw,1.9rem);margin-bottom:44px}
  .logos{display:flex;flex-wrap:nowrap;align-items:center;justify-content:center;
    gap:clamp(12px,4.2vw,78px)}
  .logos img{height:clamp(32px,6vw,100px);width:auto;object-fit:contain;flex:0 0 auto}

  /* ---------- FRANJA ---------- */
  .franja{height:300px;background-size:cover;background-position:center}

  /* ---------- SERVICIOS (TEAL) ---------- */
  .servicios{background:var(--teal);color:#fff;padding:78px 0 88px;text-align:center}
  .servicios h2{font-weight:600;letter-spacing:3px;text-transform:uppercase;
    font-size:clamp(1.5rem,3.4vw,2.1rem)}
  .servicios .sub{font-weight:500;letter-spacing:2px;text-transform:uppercase;
    color:#ffffff;margin-top:10px;font-size:clamp(1.02rem,2.2vw,1.3rem);margin-bottom:48px;
    text-shadow:0 1px 2px rgba(0,0,0,.12)}
  .grid-serv{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;text-align:center}
  .serv{display:block;color:#fff}
  .serv .foto{aspect-ratio:1/1;overflow:hidden;border-radius:2px}
  .serv .foto img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
  .serv:hover .foto img{transform:scale(1.06)}
  .serv h3{font-weight:600;letter-spacing:1px;text-transform:uppercase;
    font-size:1.35rem;margin:20px 0 10px}
  .serv p{font-weight:500;font-size:.96rem;color:#ffffff;max-width:24ch;margin:0 auto;
    text-shadow:0 1px 2px rgba(0,0,0,.12)}
  .servicios .cta-wrap{margin-top:52px}

  /* ---------- MÁXIMA CALIDAD ---------- */
  .calidad{padding:90px 0}
  .calidad .contenedor{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
  .carrusel{position:relative;border-radius:2px;overflow:hidden;aspect-ratio:4/3;background:#eee}
  .carrusel .slide{position:absolute;inset:0;opacity:0;transition:opacity 1s ease}
  .carrusel .slide img{width:100%;height:100%;object-fit:cover}
  .carrusel .slide.activo{opacity:1}
  .dots{position:absolute;bottom:16px;left:0;right:0;display:flex;justify-content:center;gap:10px;z-index:3}
  .dots button{width:11px;height:11px;border-radius:50%;border:0;background:rgba(255,255,255,.55);
    cursor:pointer;padding:0;transition:.2s}
  .dots button.activo{background:#fff;transform:scale(1.15)}
  .calidad .texto h2{color:var(--teal);font-weight:600;letter-spacing:3px;text-transform:uppercase;
    font-size:clamp(1.7rem,3.6vw,2.5rem);line-height:1.15;margin-bottom:22px}
  .calidad .texto p{font-weight:300;font-size:1.08rem;color:var(--texto);margin-bottom:32px;max-width:42ch}
  .calidad .texto strong{font-weight:600;color:var(--teal-osc)}

  /* ---------- GALERÍA ---------- */
  .galeria{padding:0;margin:0;font-size:0;line-height:0}
  .grid-gal{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin:0}
  .grid-gal figure{aspect-ratio:4/3;overflow:hidden;margin:0;display:block;opacity:0;transform:scale(1.02);
    transition:opacity .9s ease, transform .9s ease}
  .grid-gal figure.visible{opacity:1;transform:scale(1)}
  .grid-gal img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
  .grid-gal figure:hover img{transform:scale(1.07)}

  /* ---------- FOOTER ---------- */
  footer{background:var(--oscuro-2);color:#9aa6ad;padding:66px 0 26px}
  .footer-in{max-width:var(--max);margin:0 auto;padding:0 24px;
    display:grid;grid-template-columns:1fr 1fr;gap:48px}
  footer .flogo{height:80px;margin-bottom:22px;filter:brightness(0) invert(1)}
  footer .intro{max-width:34ch;font-weight:300;line-height:1.8}
  footer .fb{display:inline-flex;margin-top:22px;width:38px;height:38px;align-items:center;
    justify-content:center;background:#3b5998;border-radius:6px}
  footer .fb svg{width:18px;height:18px;fill:#fff}
  footer h3{color:var(--teal);font-weight:600;letter-spacing:3px;text-transform:uppercase;
    font-size:1.6rem;margin-bottom:24px}
  footer .datos{font-weight:300;line-height:2}
  footer .datos .et{color:var(--teal)}
  .copy{text-align:left;max-width:var(--max);margin:44px auto 0;padding:22px 24px 0;
    border-top:1px solid rgba(255,255,255,.08);font-size:.82rem;font-weight:300;color:#6d7981}

  /* ---------- RESPONSIVE ---------- */
  @media(max-width:960px){
    .grid-serv{grid-template-columns:repeat(2,1fr);gap:32px}
    .calidad .contenedor{grid-template-columns:1fr;gap:40px}
    .grid-gal{grid-template-columns:repeat(2,1fr)}
  }
  @media(max-width:760px){
    .hamburguesa{display:flex}
    nav.principal{position:fixed;inset:84px 0 auto 0;background:#fff;border-bottom:1px solid var(--linea);
      box-shadow:0 14px 30px rgba(0,0,0,.1);max-height:calc(100vh - 84px);overflow:auto;
      opacity:0;visibility:hidden;transform:translateY(-8px);
      transition:opacity .25s ease, transform .25s ease, visibility .25s}
    nav.principal.abierto{opacity:1;visibility:visible;transform:translateY(0)}
    nav.principal>ul{flex-direction:column;align-items:stretch;gap:0;padding:6px 0}
    nav.principal>ul>li{border-bottom:1px solid var(--linea)}
    nav.principal a{display:block;padding:15px 24px}
    .tiene-sub>a::after{float:right}
    .submenu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;
      border-radius:0;background:#f6faf9;min-width:0;padding:0;max-height:0;overflow:hidden;transition:max-height .3s}
    .tiene-sub.sub-abierto .submenu{max-height:600px}
    .footer-in{grid-template-columns:1fr;gap:36px}
    .franja{height:200px}
  }
  @media(max-width:520px){
    .grid-serv{grid-template-columns:1fr}
    .grid-gal{grid-template-columns:1fr}
  }
  @media(prefers-reduced-motion:reduce){
    *{scroll-behavior:auto!important;transition:none!important;animation:none!important}
    .grid-gal figure{opacity:1;transform:none}
  }

/* ================= PÁGINAS INTERIORES ================= */
.pag{padding:86px 0 92px;text-align:center}
.pag h1{color:var(--teal);font-weight:600;letter-spacing:3px;text-transform:uppercase;
  font-size:clamp(1.5rem,3.4vw,2.1rem);line-height:1.25}
.pag h2{font-weight:600;letter-spacing:3px;text-transform:uppercase;color:var(--oscuro);
  font-size:clamp(2rem,5vw,3.2rem);margin-top:6px;line-height:1.1}
.telefonos{margin-top:26px;display:flex;flex-direction:column;gap:6px;align-items:center}
.telefonos a{color:var(--teal);font-weight:400;letter-spacing:1px;
  font-size:clamp(1.5rem,3.6vw,2.1rem);transition:color .2s}
.telefonos a:hover{color:var(--teal-osc)}
.mapa{margin:56px auto 0;max-width:900px;border-radius:4px;overflow:hidden;
  border:1px solid var(--linea);line-height:0}
.mapa iframe{width:100%;height:420px;border:0;display:block}
.mapa-pie{display:flex;justify-content:center;padding:14px}
.datos-contacto{margin-top:46px}
.datos-contacto .dir{font-weight:400;letter-spacing:1px;text-transform:uppercase;
  color:var(--oscuro);font-size:clamp(1rem,2.2vw,1.25rem);line-height:1.5;max-width:34ch;margin:0 auto}
.datos-contacto .mail{display:inline-block;margin-top:22px;color:var(--teal);
  letter-spacing:1px;text-transform:uppercase;font-size:clamp(1rem,2.2vw,1.2rem)}
.datos-contacto .mail:hover{color:var(--teal-osc)}
.horario{margin-top:30px;color:var(--muted);font-weight:300;letter-spacing:.5px}
@media(max-width:760px){
  .pag{padding:60px 0 66px}
  .mapa iframe{height:320px}
}

/* ================= CABECERA DE PÁGINA INTERIOR ================= */
.cabecera{position:relative;min-height:300px;display:flex;align-items:center;
  justify-content:center;overflow:hidden;text-align:center}
.cabecera img.fondo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cabecera::after{content:"";position:absolute;inset:0;background:rgba(20,30,34,.5)}
.cabecera .in{position:relative;z-index:2;color:#fff;padding:0 24px}
.cabecera h1{font-weight:600;letter-spacing:5px;text-transform:uppercase;
  font-size:clamp(1.8rem,4.6vw,3rem);text-shadow:0 2px 16px rgba(0,0,0,.35)}
.cabecera .lema{margin-top:10px;font-weight:600;letter-spacing:2px;
  color:rgba(255,255,255,.9);font-size:clamp(.95rem,2.2vw,1.15rem)}

/* ================= BLOQUES ALTERNOS TEXTO / FOTO ================= */
/* La foto ocupa media pantalla real; el texto se alinea con el contenedor */
.bloque-alt{display:grid;grid-template-columns:1fr 1fr;align-items:center;
  gap:0;max-width:none;margin:0;padding:0}
.bloque-alt .txt{padding:clamp(48px,6vw,88px) clamp(24px,3.4vw,52px)}
.bloque-alt.der .txt{padding-left:max(24px,calc((100vw - 1180px)/2 + 24px))}
.bloque-alt.izq .txt{padding-right:max(24px,calc((100vw - 1180px)/2 + 24px))}
.bloque-alt .txt h2{color:var(--teal);font-weight:600;letter-spacing:3px;text-transform:uppercase;
  font-size:clamp(1.5rem,3.4vw,2.2rem);margin-bottom:20px;line-height:1.2}
.bloque-alt .txt p{font-weight:300;font-size:clamp(1rem,1.6vw,1.12rem);color:var(--texto);
  line-height:1.85;max-width:48ch}
.bloque-alt .foto{overflow:hidden;height:100%;min-height:340px}
.bloque-alt .foto img{width:100%;height:100%;object-fit:cover;display:block}
.bloque-alt.izq .foto{order:1}
.bloque-alt.izq .txt{order:2}

/* ================= FRANJA FINAL DE LLAMADA A LA ACCIÓN ================= */
.cta-final{background:var(--teal);color:#fff;text-align:center;padding:70px 24px 76px}
.cta-final h2{font-weight:600;letter-spacing:3px;text-transform:uppercase;
  font-size:clamp(1.4rem,3.2vw,2rem)}
.cta-final p{font-weight:300;margin-top:12px;color:#fff;letter-spacing:1px;
  font-size:clamp(1rem,2.2vw,1.15rem)}
.cta-final .tel{display:inline-block;margin-top:8px;color:#fff;font-weight:500;
  letter-spacing:1px;font-size:clamp(1.4rem,3.4vw,2rem)}
.cta-final .acciones{margin-top:30px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

@media(max-width:760px){
  .cabecera{min-height:210px}
  .bloque-alt{grid-template-columns:1fr}
  .bloque-alt .txt p{max-width:none}
  .bloque-alt.der .txt,.bloque-alt.izq .txt{padding:40px 24px 48px}
  .bloque-alt .foto{min-height:0;aspect-ratio:16/10}
  .bloque-alt.izq .foto{order:0}
  .bloque-alt.izq .txt{order:1}
}

/* ================= ÍNDICE DE ANCLAS ================= */
.anclas{border-bottom:1px solid var(--linea);background:var(--bg-suave,#f5f7f4);
  position:sticky;top:84px;z-index:40}
.anclas .contenedor{display:flex;gap:8px;overflow-x:auto;padding-top:12px;padding-bottom:12px;
  scrollbar-width:thin}
.anclas a{flex:0 0 auto;font-size:12.5px;font-weight:500;letter-spacing:.5px;
  text-transform:uppercase;color:var(--texto);background:#fff;border:1px solid var(--linea);
  padding:8px 15px;border-radius:40px;transition:.2s;white-space:nowrap}
.anclas a:hover{background:var(--teal);border-color:var(--teal);color:#fff}

/* ================= CATÁLOGO DE PRODUCTOS ================= */
.catalogo{padding:56px 0 76px}
.producto{display:grid;grid-template-columns:360px minmax(0,1fr);gap:36px;align-items:start;
  padding:40px 0;border-top:1px solid var(--linea);scroll-margin-top:150px}
.producto:first-child{border-top:0;padding-top:8px}
.p-foto{overflow:hidden;border-radius:3px;background:var(--linea)}
.p-foto img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block;transition:transform .5s}
.producto:hover .p-foto img{transform:scale(1.04)}
.p-txt h3{color:var(--teal);font-weight:600;letter-spacing:2px;text-transform:uppercase;
  font-size:clamp(1.15rem,2.4vw,1.5rem);margin-bottom:14px;line-height:1.25}
.p-txt{min-width:0}
.tec{min-width:0}
.p-desc{font-weight:300;font-size:1.02rem;line-height:1.8;color:var(--texto);max-width:60ch}

/* Botón y panel de características técnicas */
.btn-tec{margin-top:20px;display:inline-flex;align-items:center;gap:10px;cursor:pointer;
  background:none;border:1px solid var(--teal);color:var(--teal);font-family:inherit;
  font-size:12.5px;font-weight:600;letter-spacing:1px;text-transform:uppercase;
  padding:11px 20px;border-radius:40px;transition:.2s}
.btn-tec:hover{background:var(--teal);color:#fff}
.btn-tec .flecha{width:8px;height:8px;border-right:2px solid currentColor;
  border-bottom:2px solid currentColor;transform:rotate(45deg) translate(-2px,-2px);
  transition:transform .25s}
.btn-tec[aria-expanded="true"] .flecha{transform:rotate(-135deg) translate(-3px,-3px)}
.tec{margin-top:22px;padding:26px 28px;background:var(--bg-suave,#f5f7f4);
  border-left:3px solid var(--teal);border-radius:0 4px 4px 0}
.tec p{font-weight:300;font-size:.97rem;line-height:1.8;color:var(--texto);margin-bottom:12px}
.tec h4{font-weight:600;font-size:1rem;color:var(--oscuro);margin:20px 0 10px;
  letter-spacing:.5px}
.tec h4:first-child{margin-top:0}
.tec .et-tec{font-weight:600;color:var(--oscuro);margin:14px 0 6px;font-size:.93rem;
  letter-spacing:.3px}
.tec ul{margin:0 0 14px;padding-left:20px}
.tec li{font-weight:300;font-size:.95rem;line-height:1.75;color:var(--texto)}
.tec li::marker{color:var(--teal)}
.tec .fig-tec{margin:20px 0 4px;width:100%}
.tec .fig-tec a{display:block}
.tec .fig-tec img{width:100%;height:auto;border-radius:3px;display:block;border:1px solid var(--linea);
  background:#fff;image-rendering:auto}
.tec figcaption{font-size:.85rem;color:var(--muted);margin-top:8px;font-weight:300}

@media(max-width:900px){
  .producto{grid-template-columns:minmax(0,1fr);gap:22px;padding:32px 0}
  .anclas{top:84px}
}
@media(max-width:760px){
  .anclas{position:static}
  .producto{scroll-margin-top:100px}
  .tec{padding:20px 18px}
}

/* ================= REJILLA DE CATEGORÍAS (índice de cerramientos) ================= */
.rejilla-cat{padding:64px 0 84px}
.rejilla-cat .grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.tarjeta-cat{position:relative;display:block;overflow:hidden;border-radius:3px;
  aspect-ratio:3/4;background:var(--oscuro)}
.tarjeta-cat img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  transition:transform .6s ease}
.tarjeta-cat::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,.55) 0%,rgba(255,255,255,.35) 50%,rgba(20,30,34,.30) 100%);
  transition:background .35s ease}
.tarjeta-cat span{position:absolute;z-index:2;left:0;right:0;top:50%;transform:translateY(-50%);
  padding:0 18px;text-align:center;font-weight:700;letter-spacing:.5px;text-transform:uppercase;
  font-size:clamp(.95rem,1.35vw,1.15rem);line-height:1.25;color:var(--oscuro);
  transition:color .35s ease,text-shadow .35s ease}
.tarjeta-cat:hover img{transform:scale(1.09)}
.tarjeta-cat:hover::after{background:linear-gradient(180deg,rgba(20,30,34,.42) 0%,rgba(20,30,34,.46) 100%)}
.tarjeta-cat:hover span{color:#fff;text-shadow:0 2px 14px rgba(0,0,0,.45)}
.tarjeta-cat:focus-visible{outline:3px solid var(--teal);outline-offset:3px}

@media(max-width:960px){.rejilla-cat .grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:700px){
  .rejilla-cat{padding:44px 0 56px}
  .rejilla-cat .grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .tarjeta-cat span{color:#fff;text-shadow:0 2px 12px rgba(0,0,0,.5)}
  .tarjeta-cat::after{background:linear-gradient(180deg,rgba(20,30,34,.35) 0%,rgba(20,30,34,.45) 100%)}
}

/* ================= TABLAS TÉCNICAS ================= */
.tec .tabla{overflow-x:auto;margin:14px 0 20px;border-radius:3px;
  -webkit-overflow-scrolling:touch}
.tec table{width:100%;border-collapse:collapse;font-size:.88rem;background:#fff;
  min-width:min(100%,430px)}
.tec thead th{background:var(--teal);color:#fff;font-weight:600;text-transform:uppercase;
  font-size:.75rem;letter-spacing:.6px;padding:11px 13px;text-align:left;
  border-right:1px solid rgba(255,255,255,.22);vertical-align:middle;line-height:1.35}
.tec thead th:last-child{border-right:0}
.tec tbody td{padding:9px 13px;border:1px solid var(--linea);color:var(--texto);
  font-weight:300;white-space:nowrap}
.tec tbody tr:nth-child(even){background:#fafbfa}
.tec tbody td:empty::after{content:"—";color:var(--muted)}
.tec .aviso-scroll{font-size:.8rem;color:var(--muted);font-weight:300;margin:-12px 0 18px}
@media(max-width:600px){
  .tec table{font-size:.82rem}
  .tec thead th{padding:9px 10px}
  .tec tbody td{padding:8px 10px}
}

/* ================= FOTOS ADICIONALES DE PRODUCTO ================= */
.p-extra{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:10px}
.p-extra a{display:block;overflow:hidden;border-radius:3px}
.p-extra img{width:100%;aspect-ratio:3/4;object-fit:cover;display:block;transition:transform .4s}
.p-extra a:hover img{transform:scale(1.06)}
@media(max-width:900px){.p-extra{grid-template-columns:repeat(3,1fr)}}