/* ==========================================================================
   CIMETSAS v3 — "placa cortada".
   Paleta tomada del tema original (app.css + img/bgamarillo.jpg + bglinetop.png).
   Conducida por fotografía: el texto acompaña, no manda.
   Sin dependencias.
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root{
  /* Los cinco colores son los de la marca, muestreados del tema viejo. */
  --navy:#001c43;          /* h1/h2 de app.css, bgtopazul.png, bglinetop.png */
  --navy-deep:#00122c;
  --navy-soft:#0b2b57;
  --blue:#1c6c9f;          /* h3/h4 de app.css */
  --blue-light:#51aaee;    /* realces de app.css */
  --citron:#d4cf01;        /* img/bgamarillo.jpg */
  --citron-bright:#eae400;

  --white:#ffffff;
  --mist:#eef2f7;
  --mist-2:#dde5ee;
  --ink:#0f1720;
  --muted:#5d6b7d;
  --muted-light:#a8bdd6;

  --chamfer:22px;          /* el corte de la placa */
  --wrap:1240px;
  --gap:clamp(1.15rem,3.5vw,2.5rem);
  --sect:clamp(3.5rem,8vw,6rem);

  --disp:"Archivo","Montserrat",Impact,sans-serif;
  --body:"Montserrat",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important}
}
body{margin:0;background:var(--white);color:var(--ink);font-family:var(--body);
  font-size:1rem;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--blue);text-decoration:none}
p{margin:0 0 1rem}
h1,h2,h3{font-family:var(--disp);font-weight:800;margin:0 0 .4em;
  line-height:1.05;letter-spacing:-.02em;color:var(--navy)}
h1{font-size:clamp(2.3rem,6vw,4.25rem)}
h2{font-size:clamp(1.85rem,4vw,3rem)}
h3{font-size:clamp(1.05rem,1.7vw,1.3rem);font-weight:700;letter-spacing:-.01em}
:focus-visible{outline:3px solid var(--citron);outline-offset:2px}
::selection{background:var(--citron);color:var(--navy)}

/* ---------- 3. Estructura ---------- */
.wrap{width:min(100% - 2*var(--gap),var(--wrap));margin-inline:auto}
.section{padding-block:var(--sect)}
.section--mist{background:var(--mist)}
.section--navy{background:var(--navy);color:#c6d6ea}
.section--navy h2,.section--navy h3{color:#fff}
.skip{position:absolute;left:-9999px;top:0;background:var(--citron);color:var(--navy);
  padding:.75rem 1.25rem;font-weight:700;z-index:200}
.skip:focus{left:0}

/* Rotulo de seccion: barra citron + texto en versal. */
.kick{display:flex;align-items:center;gap:.7rem;margin:0 0 1rem;
  font-family:var(--body);font-size:.72rem;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--blue)}
.kick::before{content:"";width:28px;height:4px;background:var(--citron);flex:none;
  clip-path:polygon(0 0,100% 0,calc(100% - 4px) 100%,0 100%)}
.section--navy .kick{color:var(--citron)}

/* Encabezado de seccion: titular + UNA linea. Nada mas. */
.head-2{display:flex;align-items:flex-end;justify-content:space-between;
  gap:1.5rem;flex-wrap:wrap;margin-bottom:clamp(1.75rem,4vw,2.75rem)}
.head-2 > div{max-width:34rem}
.head-2 h2{margin:0}
.head-2 p{margin:.6rem 0 0;color:var(--muted);font-size:1.05rem}
.section--navy .head-2 p{color:var(--muted-light)}

/* ---------- 4. El chaflan (elemento firma) ---------- */
.cut{clip-path:polygon(0 0,100% 0,100% calc(100% - var(--chamfer)),
     calc(100% - var(--chamfer)) 100%,0 100%)}
.cut-tl{clip-path:polygon(var(--chamfer) 0,100% 0,100% 100%,0 100%,0 var(--chamfer))}

/* ---------- 5. Botones ---------- */
.btn{display:inline-flex;align-items:center;gap:.6rem;background:var(--citron);
  color:var(--navy);padding:.9rem 1.7rem;font-family:var(--body);font-weight:700;
  font-size:.92rem;letter-spacing:.01em;cursor:pointer;border:0;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
  transition:background .18s var(--ease),transform .18s var(--ease)}
.btn:hover{background:var(--citron-bright);color:var(--navy);transform:translateY(-2px)}
.btn svg{width:1.05em;height:1.05em;fill:currentColor;flex:none}
.btn--navy{background:var(--navy);color:#fff}
.btn--navy:hover{background:var(--navy-soft);color:#fff}
.btn--line{background:transparent;color:#fff;box-shadow:inset 0 0 0 2px rgba(255,255,255,.5);
  clip-path:none}
.btn--line:hover{background:#fff;color:var(--navy);box-shadow:inset 0 0 0 2px #fff}
.btn--sm{padding:.6rem 1.15rem;font-size:.84rem}

.lnk{display:inline-flex;align-items:center;gap:.5rem;font-weight:700;font-size:.88rem;
  color:var(--blue);letter-spacing:.01em}
.lnk svg{width:14px;height:14px;fill:currentColor;transition:transform .2s var(--ease)}
.lnk:hover{color:var(--navy)}.lnk:hover svg{transform:translateX(4px)}
.section--navy .lnk{color:var(--citron)}
.section--navy .lnk:hover{color:#fff}

/* ---------- 6. Cabecera ---------- */
.util{background:var(--navy-deep);color:var(--muted-light);font-size:.79rem}
.util .wrap{display:flex;justify-content:space-between;align-items:center;gap:1rem;
  min-height:38px;flex-wrap:wrap}
.util a{color:#dbe6f4}.util a:hover{color:var(--citron)}
.util-l,.util-r{display:flex;gap:1.4rem;align-items:center}
.util b{color:#fff;font-weight:600}
.util svg{width:15px;height:15px;fill:currentColor}
@media (max-width:880px){.util{display:none}}

.head{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.95);
  backdrop-filter:saturate(160%) blur(8px);border-bottom:1px solid var(--mist-2);
  transition:box-shadow .25s var(--ease)}
.head.is-stuck{box-shadow:0 6px 24px rgba(0,28,67,.12)}
.head .wrap{display:flex;align-items:center;min-height:72px;gap:clamp(.9rem,2.5vw,2rem)}
.brand{flex:none;margin-right:auto}
.brand img{height:40px;width:auto}
.nav{display:flex;align-items:center;gap:clamp(.5rem,1.4vw,1.15rem)}
.nav a{position:relative;font-weight:600;font-size:.88rem;color:var(--navy);
  white-space:nowrap;padding:.5rem .1rem}
.nav a::after{content:"";position:absolute;left:0;right:0;bottom:.15rem;height:3px;
  background:var(--citron);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease)}
.nav a:hover::after,.nav a[aria-current="page"]::after{transform:scaleX(1)}
.head > .wrap > .btn{flex:none}
/* El boton de dentro de .nav es solo para el cajon movil: si se pinta a la vez
   que el de fuera, la cabecera desborda por la derecha. */
.nav > .btn{display:none}

.burger{display:none;flex:none;width:44px;height:44px;border:0;background:var(--navy);
  cursor:pointer;padding:0;align-items:center;justify-content:center;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%)}
.burger span,.burger span::before,.burger span::after{content:"";display:block;
  width:19px;height:2px;background:#fff;transition:transform .24s var(--ease),opacity .2s}
.burger span::before{transform:translateY(-6px)}
.burger span::after{transform:translateY(4px)}
body.nav-open .burger span{background:transparent}
body.nav-open .burger span::before{transform:rotate(45deg)}
body.nav-open .burger span::after{transform:translateY(-2px) rotate(-45deg)}

@media (max-width:1120px){
  .burger{display:flex}
  .head > .wrap > .btn{display:none}
  .nav{position:fixed;inset:72px 0 auto;background:#fff;flex-direction:column;
    align-items:stretch;gap:0;padding:.5rem var(--gap) 1.75rem;
    box-shadow:0 20px 40px rgba(0,28,67,.18);
    transform:translateY(-10px);opacity:0;pointer-events:none;
    transition:transform .24s var(--ease),opacity .2s;
    max-height:calc(100dvh - 72px);overflow-y:auto}
  body.nav-open .nav{transform:none;opacity:1;pointer-events:auto}
  .nav a{font-size:1.05rem;padding:.9rem .1rem;border-bottom:1px solid var(--mist)}
  .nav a::after{display:none}
  .nav > .btn{display:inline-flex;margin-top:1.15rem;justify-content:center}
}

/* ---------- 7. Portada ---------- */
.hero{position:relative;isolation:isolate;background:var(--navy);color:#fff;
  min-height:clamp(500px,80vh,720px);display:flex;align-items:flex-end;overflow:hidden}
.hero-media{position:absolute;inset:0;z-index:-2}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(0,18,44,.55) 0%,rgba(0,18,44,.35) 35%,rgba(0,18,44,.92) 100%)}
.hero .wrap{padding-block:clamp(3rem,8vw,5rem)}
.hero h1{color:#fff;max-width:16ch;text-wrap:balance}
.hero h1 em{font-style:normal;color:var(--citron)}
/* Segunda linea dentro del H1: lleva el servicio y la ciudad, que el titular
   corto no puede cargar sin dejar de ser corto. */
.hero h1 .h1-sub,.phead h1 .h1-sub{display:block;margin-top:.7rem;
  font-family:var(--body);font-size:clamp(.95rem,1.5vw,1.1rem);font-weight:600;
  letter-spacing:0;line-height:1.4;color:#bcd0e6;max-width:32ch}
.hero p{color:#d3e0f0;max-width:38ch;font-size:clamp(1rem,1.5vw,1.15rem);margin:0 0 2rem}
.hero-act{display:flex;gap:.9rem;flex-wrap:wrap;align-items:center}

/* Banda de cifras. Los numeros en citron, sin caja flotante. */
.band{background:var(--navy-deep)}
.band .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:rgba(255,255,255,.12)}
.band-cell{background:var(--navy-deep);padding:1.5rem 1.25rem;text-align:center}
.band-cell b{display:block;font-family:var(--disp);font-size:clamp(2.1rem,4.5vw,3rem);
  font-weight:800;line-height:1;color:var(--citron)}
/* Solo el span hijo directo es el rotulo. El numero puede llevar dentro otro
   span (el que anima el contador) y debe heredar el estilo de la cifra. */
.band-cell > span{display:block;margin-top:.45rem;font-size:.76rem;font-weight:600;
  letter-spacing:.1em;text-transform:uppercase;color:var(--muted-light)}
@media (max-width:680px){.band .wrap{grid-template-columns:1fr 1fr}}

/* ---------- 8. Mosaico de servicios (la pieza principal) ---------- */
.mosaic{display:grid;gap:clamp(.75rem,1.5vw,1.15rem);
  grid-template-columns:repeat(4,1fr);grid-auto-rows:clamp(150px,19vw,225px)}
/* Fila 1-2: la grande ocupa las columnas 1-2 y las piezas 2..5 las 3-4.
   Fila 3: las piezas 6 y 7 ocupan dos columnas cada una. Sin la 7 quedaba
   media fila en blanco a la derecha. */
.mosaic .shot:nth-child(1){grid-column:span 2;grid-row:span 2}
.mosaic .shot:nth-child(6),
.mosaic .shot:nth-child(7){grid-column:span 2}
@media (max-width:900px){
  .mosaic{grid-template-columns:repeat(2,1fr)}
  .mosaic .shot:nth-child(1){grid-column:span 2;grid-row:span 1}
}

/* Ficha con foto y titulo ENCIMA de la imagen: menos texto, mas imagen. */
.shot{position:relative;overflow:hidden;background:var(--navy);display:block;
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--chamfer)),
    calc(100% - var(--chamfer)) 100%,0 100%)}
.shot img{width:100%;height:100%;object-fit:cover;
  transition:transform .6s var(--ease),opacity .3s}
.shot:hover img{transform:scale(1.05)}
.shot::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(0,28,67,0) 30%,rgba(0,28,67,.88) 100%)}
.shot-txt{position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:1.1rem 1.15rem calc(.9rem + var(--chamfer)*.5)}
.shot-txt h3{color:#fff;margin:0;font-size:clamp(.95rem,1.5vw,1.2rem);line-height:1.2;
  text-shadow:0 1px 12px rgba(0,18,44,.5)}
.shot-txt p{margin:.35rem 0 0;color:#c9d9ec;font-size:.84rem;line-height:1.4}
.shot::before{content:"";position:absolute;left:0;bottom:0;width:0;height:4px;z-index:3;
  background:var(--citron);transition:width .35s var(--ease)}
.shot:hover::before{width:100%}
.shot--lg .shot-txt h3{font-size:clamp(1.3rem,2.4vw,1.9rem)}

/* Rejilla simple de fichas, para las paginas internas. */
.shots{display:grid;gap:clamp(.75rem,1.5vw,1.15rem);
  grid-template-columns:repeat(auto-fill,minmax(min(100%,250px),1fr))}
.shots .shot{aspect-ratio:4/3}

/* ---------- 9. Catalogo de especialidades ---------- */
/* Cada entrada lleva su miniatura: una lista de 48 lineas de texto pesaba
   demasiado y no decia nada. */
.cat-list{display:grid;gap:.65rem;list-style:none;padding:0;margin:0;
  grid-template-columns:repeat(auto-fill,minmax(min(100%,335px),1fr))}
.cat-list li{margin:0}
.cat{display:flex;align-items:center;gap:.85rem;height:100%;
  padding:.6rem .9rem .6rem .6rem;background:#fff;border:1px solid var(--mist-2);
  font-weight:600;font-size:.9rem;line-height:1.35;color:var(--navy);
  transition:border-color .18s,box-shadow .18s,transform .18s var(--ease)}
.cat:hover{color:var(--navy);border-color:var(--blue-light);transform:translateX(3px);
  box-shadow:0 4px 14px rgba(0,28,67,.09)}
.cat img{width:56px;height:56px;flex:none;object-fit:cover;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%)}
.cat span{flex:1}

/* ---------- 10. Proyectos ---------- */
.works{display:grid;gap:clamp(1rem,2.5vw,1.75rem);
  grid-template-columns:repeat(auto-fill,minmax(min(100%,330px),1fr))}
.work{position:relative;background:var(--navy);overflow:hidden;
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--chamfer)),
    calc(100% - var(--chamfer)) 100%,0 100%)}
.work-img{aspect-ratio:16/11;overflow:hidden}
.work-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.work:hover .work-img img{transform:scale(1.05)}
.work-txt{padding:1.15rem 1.25rem calc(1.15rem + var(--chamfer)*.4)}
.work-txt h3{color:#fff;margin:0 0 .4rem;font-size:1.05rem;line-height:1.25}
.work-txt p{margin:0;color:#a8c0dc;font-size:.86rem;line-height:1.5}
.work-fecha{display:inline-block;margin-top:.7rem;font-size:.7rem;font-weight:700;
  letter-spacing:.1em;text-transform:uppercase;color:var(--citron)}

/* ---------- 11. Clientes ---------- */
/* Tarjetas sueltas con borde, no una rejilla continua: cada cliente se lee
   como una ficha independiente. */
.logos{display:grid;gap:clamp(.75rem,1.5vw,1.1rem);
  grid-template-columns:repeat(auto-fill,minmax(min(50% - .55rem,175px),1fr))}
.logo-c{background:#fff;border:1px solid var(--mist-2);padding:1.35rem 1rem;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:.7rem;min-height:150px;
  transition:border-color .2s,box-shadow .2s,transform .2s var(--ease)}
.logo-c:hover{border-color:var(--blue-light);transform:translateY(-2px);
  box-shadow:0 6px 18px rgba(0,28,67,.1)}
.logo-c img{height:58px;width:auto;object-fit:contain;filter:grayscale(1);opacity:.65;
  transition:filter .25s,opacity .25s}
.logo-c:hover img{filter:none;opacity:1}
.logo-c p{margin:0;font-size:.66rem;font-weight:600;letter-spacing:.06em;
  text-transform:uppercase;color:var(--muted);text-align:center;line-height:1.35}

/* ---------- 12. Llamada final ---------- */
.cta{position:relative;isolation:isolate;background:var(--navy);color:#fff;overflow:hidden}
.cta-media{position:absolute;inset:0;z-index:-2}
.cta-media img{width:100%;height:100%;object-fit:cover}
/* Velo en degradado: opaco a la izquierda, donde va el titular, y mas claro a
   la derecha para que se vea la foto. No baja del 70% o el boton de contorno
   blanco pierde contraste sobre las zonas claras de la imagen. */
.cta::before{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(100deg,rgba(0,18,44,.93) 0%,rgba(0,18,44,.8) 55%,rgba(0,18,44,.72) 100%)}
.cta-media img{filter:saturate(.9)}
.cta .wrap{padding-block:clamp(3rem,7vw,4.5rem);display:grid;gap:1.75rem;
  grid-template-columns:minmax(0,1fr) auto;align-items:center}
@media (max-width:820px){.cta .wrap{grid-template-columns:1fr}}
.cta h2{color:#fff;margin:0;max-width:20ch}
.cta p{color:#c3d5ea;margin:.6rem 0 0;max-width:42ch}
.cta-act{display:flex;gap:.9rem;flex-wrap:wrap}

/* ---------- 13. Cabecera de pagina interna ---------- */
.phead{position:relative;isolation:isolate;background:var(--navy);color:#fff;
  padding-block:clamp(2.75rem,6vw,4.5rem);overflow:hidden}
.phead-media{position:absolute;inset:0;z-index:-2}
.phead-media img{width:100%;height:100%;object-fit:cover}
.phead::before{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(100deg,rgba(0,18,44,.93),rgba(0,28,67,.66))}
.phead h1{color:#fff;margin:0}
.phead p{color:#c7d7ea;margin:.85rem 0 0;max-width:52ch}
.crumbs{display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:1.1rem;
  font-size:.78rem;color:#95afd0}
.crumbs a{color:#d3e0f0}.crumbs a:hover{color:var(--citron)}

/* ---------- 14. Contenido ---------- */
.prose{max-width:66ch}
.prose h3{margin-top:1.9rem;color:var(--blue)}
.prose p{color:#3c4a5b}
.prose ul{padding-left:1.1rem;color:#3c4a5b}
.prose li{margin-bottom:.4rem}
.prose li::marker{color:var(--citron)}

.duo{display:grid;gap:clamp(1.5rem,4vw,3.5rem);
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start}
@media (max-width:880px){.duo{grid-template-columns:1fr}}

.cards{display:grid;gap:1px;background:var(--mist-2);
  grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr))}
.card-v{background:#fff;padding:1.4rem 1.5rem}
.card-v h3{margin:0 0 .45rem;font-size:1.05rem}
.card-v p{margin:0;color:var(--muted);font-size:.92rem}
.card-v i{display:block;width:26px;height:4px;background:var(--citron);margin-bottom:.9rem;
  clip-path:polygon(0 0,100% 0,calc(100% - 4px) 100%,0 100%)}

.panel{background:var(--navy);color:#c6d6ea;padding:clamp(1.4rem,3.5vw,2.25rem);
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--chamfer)),
    calc(100% - var(--chamfer)) 100%,0 100%)}
.panel h3{color:#fff;margin-top:0}
.panel p:last-child,.panel ul:last-child{margin-bottom:0}
.panel li::marker{color:var(--citron)}

/* ---------- 15. Formulario ---------- */
.form{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr))}
.field{display:flex;flex-direction:column;gap:.35rem}
.field--full{grid-column:1/-1}
.field label{font-size:.78rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  color:var(--navy)}
.field input,.field select,.field textarea{font:inherit;font-size:.94rem;color:var(--ink);
  background:#fff;border:1px solid var(--mist-2);padding:.7rem .85rem;width:100%;
  transition:border-color .18s,box-shadow .18s}
.field textarea{min-height:135px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;
  border-color:var(--blue);box-shadow:0 0 0 3px rgba(28,108,159,.16)}
.form .btn{grid-column:1/-1;justify-self:start}

.datos{list-style:none;padding:0;margin:0;display:grid;gap:1rem}
.datos li{display:flex;gap:.85rem;align-items:flex-start}
.datos svg{width:19px;height:19px;fill:var(--citron);flex:none;margin-top:.25rem}
.datos b{display:block;font-size:.74rem;font-weight:700;letter-spacing:.09em;
  text-transform:uppercase;color:var(--navy)}
.datos a,.datos span{color:var(--muted)}
.datos a:hover{color:var(--blue)}

/* ---------- 16. Pie ---------- */
.foot{background:var(--navy-deep);color:#9db4d0;font-size:.9rem;
  padding-top:clamp(2.75rem,6vw,4rem)}
.foot-grid{display:grid;gap:2rem;grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  padding-bottom:2.25rem}
@media (max-width:900px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.foot-grid{grid-template-columns:1fr}}
.foot h3{color:#fff;font-family:var(--body);font-size:.76rem;font-weight:700;
  letter-spacing:.13em;text-transform:uppercase;margin:0 0 1rem}
.foot img.logo{height:42px;width:auto;margin-bottom:1rem}
.foot ul{list-style:none;padding:0;margin:0;display:grid;gap:.55rem}
.foot a{color:#9db4d0}.foot a:hover{color:var(--citron)}
.foot-soc{display:flex;gap:.65rem;margin-top:1.1rem}
.foot-soc a{width:36px;height:36px;background:rgba(255,255,255,.09);display:grid;
  place-items:center;transition:background .2s,transform .2s var(--ease);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 7px),calc(100% - 7px) 100%,0 100%)}
.foot-soc a:hover{background:var(--citron);transform:translateY(-2px)}
.foot-soc svg{width:16px;height:16px;fill:#dbe6f4}
.foot-soc a:hover svg{fill:var(--navy)}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding-block:1.2rem;
  display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-size:.8rem;
  color:#7b93b2}

/* ---------- 17. WhatsApp ---------- */
.wa{position:fixed;right:18px;bottom:18px;z-index:90;width:54px;height:54px;
  background:#25d366;display:grid;place-items:center;
  box-shadow:0 6px 18px rgba(37,211,102,.42);transition:transform .2s var(--ease);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%)}
.wa:hover{transform:scale(1.07)}
.wa svg{width:28px;height:28px;fill:#fff}

/* ---------- 18. Utilidades ---------- */
.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}
.reveal{opacity:0;transform:translateY(16px);
  transition:opacity .55s var(--ease),transform .55s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}