:root{
  --ink:#111111;
  --body:#3D3D3D;
  --grey:#6E6E6E;
  --line:#E4E2DE;
  --paper:#F6F5F3;
  --white:#FFFFFF;
  --sans:"Archivo","Helvetica Neue",Arial,sans-serif;
  --pad:clamp(20px,5vw,64px);
  --gap:clamp(10px,1.4vw,20px);
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;background:var(--white);color:var(--body);
  font-family:var(--sans);font-size:17px;line-height:1.62;letter-spacing:-.003em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);text-wrap:balance}
p{margin:0 0 1em;max-width:62ch}
p:last-child{margin-bottom:0}

/* ---------- tipografía ---------- */
.h1{font-size:clamp(2.1rem,5.4vw,4rem);font-weight:600;line-height:1.03;letter-spacing:-.035em}
.h2{font-size:clamp(1.75rem,3.4vw,2.9rem);font-weight:600;line-height:1.08;letter-spacing:-.03em}
.h3{font-size:clamp(1.2rem,2vw,1.65rem);font-weight:600;line-height:1.18;letter-spacing:-.02em}
.h4{font-size:1.02rem;font-weight:600;letter-spacing:-.01em}
.label{display:block;font-size:.7rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--grey);margin:0 0 14px}.label::before{content:"";display:inline-block;width:13px;height:14px;margin-right:8px;vertical-align:-2px;background:url(../images/icono-label-fondo-claro.webp) no-repeat center/contain}.dark .label::before,.hero .label::before,.banda .label::before{background-image:url(../images/icono-label-fondo-oscuro.webp)}
.lead{font-size:clamp(1.05rem,1.35vw,1.2rem);line-height:1.55;color:var(--body)}
.note{font-size:.85rem;color:var(--grey)}

/* ---------- estructura ---------- */
main{display:block}
section{padding:clamp(56px,8vw,118px) var(--pad)}
.wrap{max-width:1280px;margin:0 auto}
.narrow{max-width:720px}
.paper{background:var(--paper)}
.dark{background:var(--ink);color:#D6D4D0}
.dark h2,.dark h3,.dark .h2,.dark .h3{color:var(--white)}
.dark .label{color:#9A9792}
.rule{height:1px;background:var(--line);border:0;margin:0}
.bleed{width:100vw;margin-left:calc(50% - 50vw)}

.head{max-width:820px;margin:0 0 clamp(30px,4vw,52px)}
.head p{margin-top:1rem}

/* ---------- botones ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;min-height:46px;
  padding:12px 26px;font-size:.82rem;font-weight:600;letter-spacing:.06em;
  text-decoration:none;border:1px solid var(--ink);background:var(--ink);color:var(--white);
  transition:background .25s ease,color .25s ease,border-color .25s ease;
}
.btn:hover{background:var(--white);color:var(--ink)}
.btn--ghost{background:transparent;color:var(--ink)}
.btn--ghost:hover{background:var(--ink);color:var(--white)}
.btn--light{background:var(--white);border-color:var(--white);color:var(--ink)}
.btn--light:hover{background:transparent;color:var(--white)}
.btn--outline-light{background:transparent;border-color:rgba(255,255,255,.75);color:var(--white)}
.btn--outline-light:hover{background:var(--white);color:var(--ink)}
.btn--sm{min-height:40px;padding:9px 18px;font-size:.76rem}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:clamp(24px,3vw,34px)}
a:focus-visible,button:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.on-photo a:focus-visible{outline-color:var(--white)}

/* ---------- navegación ---------- */
.nav{
  position:sticky;top:0;z-index:40;display:flex;align-items:center;justify-content:space-between;
  gap:20px;padding:15px var(--pad);background:rgba(255,255,255,.94);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav a{text-decoration:none}
.nav .logo-nav{height:16px;width:auto}
.nav ul{display:flex;gap:clamp(16px,2.2vw,32px);list-style:none;margin:0;padding:0}
.nav ul a{font-size:.8rem;font-weight:500;color:var(--body);padding:6px 0;border-bottom:1px solid transparent}
.nav ul a:hover{color:var(--ink);border-bottom-color:var(--ink)}
@media (max-width:900px){.nav ul{display:none}}
.skip{position:absolute;left:-9999px}
.skip:focus{left:var(--pad);top:10px;z-index:60;background:var(--ink);color:var(--white);padding:10px 16px}

/* ---------- portada ---------- */
.hero{position:relative;min-height:min(84vh,760px);display:flex;align-items:flex-end;padding:0;overflow:hidden}
.hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.62) 0%,rgba(0,0,0,.15) 62%,rgba(0,0,0,0) 100%),linear-gradient(180deg,rgba(0,0,0,.25) 0%,rgba(0,0,0,.18) 45%,rgba(0,0,0,.62) 100%)}
.hero .inner{position:relative;z-index:2;padding:clamp(34px,6vw,80px) var(--pad);max-width:1280px;margin:0 auto;width:100%;color:var(--white)}
.hero .h1{color:var(--white);max-width:16ch}
.hero p{color:rgba(255,255,255,.9);max-width:52ch;margin-top:1rem}
.hero .label{color:rgba(255,255,255,.78)}

/* ---------- tira de clientes ---------- */
.clientes{display:flex;flex-wrap:wrap;gap:10px clamp(20px,3vw,44px);align-items:center;justify-content:center;list-style:none;margin:20px 0 0;padding:0}
.clientes li{font-size:.82rem;font-weight:500;letter-spacing:.09em;text-transform:uppercase;color:var(--grey)}

/* ---------- tira de logotipos de clientes ---------- */
.logos{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:clamp(30px,5vw,76px);margin-top:32px}
.logos img{width:auto;opacity:.8}
@media (max-width:600px){.logos{gap:26px 34px}.logos img{transform:scale(.86)}}

/* ---------- rejillas ---------- */
.grid{display:grid;gap:var(--gap);align-items:start}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.split{display:grid;grid-template-columns:1.25fr .75fr;gap:clamp(26px,4vw,64px);align-items:start}
.split--rev{grid-template-columns:.75fr 1.25fr}
.split--mid{align-items:center}
.self-mid{align-self:center}
@media (max-width:960px){
  .split,.split--rev{grid-template-columns:1fr;gap:28px}
  .g4{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:620px){
  .g3,.g2{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  body{font-size:16px}
}
.stack>*+*{margin-top:var(--gap)}

/* ---------- foto ---------- */
.zoom{display:block;width:100%;padding:0;border:0;background:none;font:inherit;cursor:zoom-in;text-align:left}
.zoom img{width:100%}
@media (hover:hover){.zoom img{transition:opacity .3s ease}.zoom:hover img{opacity:.88}}
figure{margin:0}
figcaption{margin-top:10px;font-size:.85rem;color:var(--grey)}
figcaption strong{color:var(--ink);font-weight:600}

/* ---------- bloques de público ---------- */
.publicos-cab{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(24px,4vw,64px);align-items:end;margin-bottom:clamp(34px,4.5vw,60px)}
@media (max-width:900px){.publicos-cab{grid-template-columns:1fr;gap:20px}}
.lista-publicos{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.lista-publicos li{
  display:grid;grid-template-columns:76px minmax(220px,1fr) 1.35fr;gap:clamp(14px,2.4vw,40px);
  align-items:baseline;padding:clamp(20px,2.6vw,32px) 0;border-bottom:1px solid var(--line);
  transition:padding-left .35s cubic-bezier(.2,.7,.3,1);
}
@media (hover:hover){.lista-publicos li:hover{padding-left:10px}}
.lista-publicos .idx{font-size:.78rem;font-weight:600;letter-spacing:.14em;color:var(--grey)}
.lista-publicos .tit{font-size:clamp(1.15rem,1.9vw,1.5rem);font-weight:600;letter-spacing:-.02em;color:var(--ink);margin:0}
.lista-publicos p{margin:0;font-size:.98rem;color:var(--grey);max-width:52ch}
@media (max-width:820px){
  .lista-publicos li{grid-template-columns:44px 1fr;row-gap:8px}
  .lista-publicos p{grid-column:2}
}

.publicos{display:grid;grid-template-columns:repeat(auto-fit,minmax(215px,1fr));gap:clamp(18px,2.4vw,34px)}
@media (max-width:1000px){.publicos{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.publicos{grid-template-columns:1fr}}
.publico img{aspect-ratio:4/3;object-fit:cover;width:100%}
.publico h3{margin:16px 0 8px}
.publico p{font-size:.95rem;color:var(--grey)}
.publico a{display:inline-block;margin-top:12px;font-size:.82rem;font-weight:600;text-decoration:none;border-bottom:1px solid var(--ink);color:var(--ink);padding-bottom:2px}
.publico a:hover{border-bottom-color:transparent}

/* ---------- proyecto ---------- */
.proyecto{padding-top:clamp(46px,6vw,88px)}
.proyecto:first-of-type{padding-top:0}
.proyecto-head{margin-bottom:clamp(20px,2.6vw,30px);max-width:62ch}
.proyecto-head .h3{margin-bottom:10px}

/* ---------- pasos ---------- */
.pasos{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(22px,3vw,48px)}
@media (max-width:820px){.pasos{grid-template-columns:1fr}}
.paso{border-top:1px solid var(--line);padding-top:18px}
.dark .paso{border-top-color:rgba(255,255,255,.18)}
.paso .num{font-size:.78rem;font-weight:600;letter-spacing:.16em;color:var(--grey);display:block;margin-bottom:10px}
.paso p{font-size:.96rem;color:var(--grey)}
.dark .paso p{color:#B4B1AC}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}

/* ---------- banda con foto ---------- */
.banda{position:relative;display:flex;align-items:center;justify-content:center;text-align:center;min-height:min(72vh,620px);overflow:hidden;padding:clamp(48px,7vw,96px) var(--pad)}
.banda>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 36%}
.banda::after{content:"";position:absolute;inset:0;background:rgba(0,0,0,.5)}
.banda .inner{position:relative;z-index:2;color:var(--white);max-width:760px}
.banda .label{color:rgba(255,255,255,.8)}
.banda .h2{color:var(--white)}
.banda p{color:rgba(255,255,255,.9);margin:1rem auto 0}
.banda .actions{justify-content:center}

/* ---------- contacto y pie ---------- */
.contacto-datos{display:grid;gap:12px;margin-top:clamp(24px,3vw,36px)}
.contacto-datos a{font-size:clamp(1.05rem,2vw,1.4rem);font-weight:500;text-decoration:none;color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:4px;width:fit-content}
.contacto-datos a:hover{border-bottom-color:var(--ink)}
footer{background:var(--ink);color:#8E8B86;padding:clamp(44px,6vw,76px) var(--pad)}
footer .logo-pie{width:min(260px,60%);height:auto;margin-bottom:26px}
footer a{color:#D6D4D0;text-decoration:none}
footer a:hover{color:var(--white)}
.pie-grid{display:flex;flex-wrap:wrap;gap:20px 48px;justify-content:space-between;align-items:flex-end;max-width:1280px;margin:0 auto}
.pie-legal{font-size:.78rem;margin-top:30px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);max-width:1280px;margin-left:auto;margin-right:auto}

/* ---------- aparición ---------- */
.js .rv{opacity:0;transform:translateY(14px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.js .rv.in{opacity:1;transform:none}

/* los textos entran escalonados, uno detrás de otro */
.js .rv .label,
.js .rv .h1,.js .rv .h2,.js .rv .h3,.js .rv .h4,
.js .rv p,
.js .rv figcaption,
.js .rv .num{
  opacity:0;transform:translateY(12px);
  transition:opacity .85s cubic-bezier(.22,.61,.36,1),transform .85s cubic-bezier(.22,.61,.36,1);
}
.js .rv.in .label,.js .rv.in .num{opacity:1;transform:none;transition-delay:.06s}
.js .rv.in .h1,.js .rv.in .h2,.js .rv.in .h3{opacity:1;transform:none;transition-delay:.16s}
.js .rv.in .h4{opacity:1;transform:none;transition-delay:.2s}
.js .rv.in p{opacity:1;transform:none;transition-delay:.28s}
.js .rv.in figcaption{opacity:1;transform:none;transition-delay:.34s}

/* portada: entra sola al cargar */
@keyframes subir{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.js .hero .label{animation:subir 1s cubic-bezier(.22,.61,.36,1) .15s both}
.js .hero .h1{animation:subir 1.05s cubic-bezier(.22,.61,.36,1) .28s both}
.js .hero p{animation:subir 1.05s cubic-bezier(.22,.61,.36,1) .46s both}

@media (prefers-reduced-motion:reduce){
  .js .rv,
  .js .rv .label,.js .rv .h1,.js .rv .h2,.js .rv .h3,.js .rv .h4,
  .js .rv p,.js .rv figcaption,.js .rv .num{opacity:1;transform:none;transition:none}
  .js .hero .label,.js .hero .h1,.js .hero p{animation:none}
  .zoom:hover img{transition:none;opacity:1}
}

/* ---------- ampliar imagen ---------- */
.lb{position:fixed;inset:0;z-index:80;background:rgba(255,255,255,.97);display:none;align-items:center;justify-content:center;padding:clamp(16px,4vw,56px)}
.lb[open]{display:flex}
.lb img{max-width:100%;max-height:88vh;width:auto;height:auto}
.lb-close{position:absolute;top:16px;right:20px;min-height:44px;background:none;border:1px solid var(--line);color:var(--ink);font:inherit;font-size:.78rem;font-weight:600;padding:10px 16px;cursor:pointer}
.lb-close:hover{border-color:var(--ink)}