:root{
  --bg:#FAF6EC; --bg2:#F1EBDB; --card:#FFFDF7;
  --ink:#16151A; --muted:#524F5A;
  --accent:#2B2A7A; --on-accent:#FAF6EC;
  --gold:#C28A2C; --gold-ink:#7A4E00;
  --line:#DDD5C0; --field:#7A7684;
  --err:#9B1C1C; --ok:#1C6B3C;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Georgia,serif;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#12111A; --bg2:#1A1925; --card:#1A1925;
    --ink:#F3EFE4; --muted:#BDB8C8;
    --accent:#B4B3FF; --on-accent:#12111A;
    --gold:#E3B25A; --gold-ink:#E3B25A;
    --line:#33314A; --field:#8C88A0;
    --err:#FF9B9B; --ok:#8FDCAA;
  }
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:6.5rem}
@media (min-width:640px){html{scroll-padding-top:4.5rem}}
body{margin:0;background:var(--bg);color:var(--ink);font:1.0625rem/1.65 var(--sans);-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;height:auto}
a{color:var(--accent);text-underline-offset:.2em}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:2px}
main:focus{outline:none}
h1,h2,h3{font-family:var(--serif);font-weight:500;line-height:1.15;margin:0 0 .6em;letter-spacing:-.01em}
h2{font-size:clamp(1.9rem,4.5vw,3rem)}
h3{font-size:1.35rem}
p{margin:0 0 1em}
ul{list-style:none;margin:0;padding:0}

.wrap{width:min(100% - 2.5rem,70rem);margin-inline:auto}
.skip{position:absolute;left:1rem;top:-4rem;z-index:20;background:var(--accent);color:var(--on-accent);padding:.7rem 1rem;border-radius:.4rem;transition:top .2s}
.skip:focus{top:1rem}

/* Cabecera */
.site-header{position:sticky;top:0;z-index:10;background:var(--bg);border-bottom:1px solid var(--line)}
.bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.1rem 1.5rem;padding:.55rem 0}
.brand{display:inline-flex;align-items:center;min-height:44px}
.wm{font:500 21px var(--serif);fill:var(--ink)}
.wm-v{font-style:italic;fill:var(--gold-ink)}
.spark{fill:var(--gold)}
.nav{width:100%}
.nav ul{display:flex;gap:.25rem}
.nav a{display:inline-block;padding:.55rem .75rem;min-height:44px;line-height:1.7;color:var(--ink);text-decoration:none;border-bottom:2px solid transparent}
.nav a:hover{border-color:var(--gold)}
.nav a[aria-current]{border-color:var(--accent)}
@media (min-width:640px){.nav{width:auto}.nav a{min-height:0}}

/* Hero */
.hero{position:relative;overflow:hidden;min-height:82vh;min-height:82svh;display:flex;align-items:center;border-bottom:1px solid var(--line)}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;z-index:0}
.s-gold{stop-color:var(--gold);stop-opacity:.4}
.s-gold0{stop-color:var(--gold);stop-opacity:0}
.s-ind{stop-color:var(--accent);stop-opacity:.28}
.s-ind0{stop-color:var(--accent);stop-opacity:0}
.f-a{fill:url(#gA)}
.f-b{fill:url(#gB)}
.ln{fill:none;stroke:var(--line);stroke-width:1.5}
.hero-in{position:relative;z-index:1;padding-block:4rem}
.eyebrow{font:600 .8rem var(--sans);letter-spacing:.16em;text-transform:uppercase;color:var(--gold-ink);margin-bottom:1rem}
.hero h1{font-size:clamp(2.8rem,9vw,6rem);margin-bottom:.25em}
.lema{font:italic 400 clamp(1.3rem,3.2vw,2rem)/1.3 var(--serif);color:var(--accent);max-width:28ch}
.lead{max-width:46ch;color:var(--muted);font-size:1.15rem;margin-bottom:2rem}

/* Botón */
.btn{display:inline-block;padding:.85rem 1.7rem;background:var(--accent);color:var(--on-accent);border:2px solid var(--accent);border-radius:999px;font:600 1rem var(--sans);text-decoration:none;cursor:pointer;transition:background .2s,color .2s,border-color .2s}
.btn:hover{background:var(--ink);border-color:var(--ink);color:var(--bg)}
.btn[disabled]{opacity:.7;cursor:progress}

/* Secciones */
.section{padding-block:clamp(4rem,10vw,8rem)}
.section.alt{background:var(--bg2);border-block:1px solid var(--line)}
.split{display:grid;gap:2rem}
@media (min-width:1024px){.split{grid-template-columns:5fr 7fr;gap:5rem}}
.big{font:400 clamp(1.3rem,2.4vw,1.7rem)/1.45 var(--serif)}
.head{margin-bottom:2.5rem}
.grid3{display:grid;gap:1.5rem}
@media (min-width:768px){.grid3{grid-template-columns:repeat(3,1fr)}}
.values{margin-top:3.5rem;padding-top:2.5rem;border-top:1px solid var(--line)}
.values p{color:var(--muted);margin:0}
.ico{fill:none;stroke:var(--gold-ink);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;margin-bottom:.9rem;display:block}

.card{background:var(--card);border:1px solid var(--line);border-radius:.6rem;padding:2rem 1.75rem;transition:transform .25s,border-color .25s,box-shadow .25s}
.card:hover{transform:translateY(-4px);border-color:var(--gold);box-shadow:0 12px 28px -18px var(--ink)}
.card p{color:var(--muted);margin:0}

/* Formulario */
.field{margin-bottom:1.25rem}
.field label{display:block;font-weight:600;margin-bottom:.35rem}
input[type=text],input[type=email],select,textarea{width:100%;padding:.75rem .85rem;font:inherit;color:var(--ink);background:var(--card);border:1.5px solid var(--field);border-radius:.4rem}
textarea{resize:vertical;min-height:9rem}
[aria-invalid=true]{border-color:var(--err)}
.err{color:var(--err);font-size:.95rem;margin:.35rem 0 0}
.check{display:grid;grid-template-columns:auto 1fr;gap:.2rem .7rem;align-items:start}
.check input{width:1.25rem;height:1.25rem;margin-top:.2rem;accent-color:var(--accent)}
.check label{font-weight:400;margin:0}
.check .err{grid-column:2}
.note{font-size:.95rem;color:var(--muted)}
.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
.status{margin-top:1.25rem;padding:.9rem 1rem;background:var(--bg2);border-left:4px solid var(--field)}
.status:empty{display:none}
.status.ok{border-color:var(--ok)}
.status.err{border-color:var(--err);color:var(--ink)}

/* Footer */
.site-footer{border-top:1px solid var(--line);padding-block:2rem;color:var(--muted);font-size:.95rem}
.foot{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.5rem 2rem}
.foot p{margin:0}
.foot ul{display:flex;flex-wrap:wrap;gap:.25rem 1.25rem}
.foot a{display:inline-block;padding:.35rem 0;color:var(--ink)}

/* Páginas legales y de respuesta del servidor */
.legal{width:min(100% - 2.5rem,46rem);margin:0 auto;padding-block:3rem 5rem}
.legal h1{font-size:clamp(2rem,6vw,3rem)}
.legal h2{font-size:1.5rem;margin-top:2rem}
.legal .back{display:inline-block;margin-bottom:2rem}
.legal .upd{color:var(--muted);font-size:.95rem}
.preview{white-space:pre-wrap;background:var(--bg2);border-left:4px solid var(--gold);padding:1rem;margin:1rem 0}

/* Animaciones solo si hay JS y no se pide reducir movimiento */
@media (scripting:enabled) and (prefers-reduced-motion:no-preference){
  .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
  .reveal.in{opacity:1;transform:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .card:hover{transform:none}
}
/* Clientes */
.clients{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.clients li{display:flex;align-items:center;justify-content:center;min-height:6.5rem;padding:1.75rem 1.25rem;background:var(--bg);text-align:center;font:500 clamp(1.05rem,2.2vw,1.35rem)/1.3 var(--serif);letter-spacing:-.005em;transition:background .25s,color .25s}
.clients li:last-child:nth-child(odd){grid-column:1/-1}
.clients li:hover{background:var(--card);color:var(--accent)}
@media (min-width:768px){
  .clients{grid-template-columns:repeat(3,1fr)}
  .clients li{min-height:8rem}
  .clients li:last-child:nth-child(odd){grid-column:auto}
}
@media (scripting:enabled) and (prefers-reduced-motion:no-preference){
  .clients li:nth-child(3n+2){transition-delay:.08s,0s,0s}
  .clients li:nth-child(3n){transition-delay:.16s,0s,0s}
}
.nav ul{flex-wrap:wrap}