:root{
  --bg:#FFFFFF;
  --soft:#F3F6FB;
  --surface:#FFFFFF;
  --ink:#0F1F3A;
  --muted:#4B5D78;
  --line:#D6DFEC;
  --accent:#2F6BBE;
  --sky:#6FA8E8;
  --wa:#147A55;
  --wa-ink:#FFFFFF;
  --band:#0A2454;
  --band-ink:#F2F6FC;
  --band-muted:#B9C7DD;
  --sheet-back:#E3EBF7;
  --serif:"IBM Plex Serif", Georgia, "Times New Roman", serif;
  --sans:"IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0A1424;
    --soft:#0E1B2E;
    --surface:#101E33;
    --ink:#E8EEF7;
    --muted:#9FB1C7;
    --line:#223650;
    --accent:#6FA8E8;
    --wa:#2DBE8B;
    --wa-ink:#04241A;
    --band:#060E1B;
    --band-ink:#E8EEF7;
    --band-muted:#9FB1C7;
    --sheet-back:#16283F;
    color-scheme: dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0A1424;
  --soft:#0E1B2E;
  --surface:#101E33;
  --ink:#E8EEF7;
  --muted:#9FB1C7;
  --line:#223650;
  --accent:#6FA8E8;
  --wa:#2DBE8B;
  --wa-ink:#04241A;
  --band:#060E1B;
  --band-ink:#E8EEF7;
  --band-muted:#9FB1C7;
  --sheet-back:#16283F;
  color-scheme: dark;
}
html{scroll-padding-top:calc(env(safe-area-inset-top,0px) + 16px);}
@media (prefers-reduced-motion: no-preference){html{scroll-behavior:smooth;}}
*,*::before,*::after{box-sizing:border-box;}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--sans);font-size:17px;line-height:1.6;
  -webkit-text-size-adjust:100%;
}
h1,h2,h3,h4,p,ul,ol,dl,dd{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;}
img,svg{max-width:100%;height:auto;}
[hidden]{display:none !important;}
.wrap{width:100%;max-width:1120px;margin:0 auto;padding:0 20px;}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:4px;}
.skip{position:absolute;left:-9999px;top:8px;background:var(--surface);color:var(--ink);padding:10px 14px;border-radius:6px;z-index:50;}
.skip:focus{left:12px;}

/* Tipografía */
.title{font:700 clamp(1.9rem,4.6vw,2.9rem)/1.1 var(--serif);letter-spacing:-.015em;}
.lede{margin-top:14px;font-size:1.125rem;color:var(--muted);max-width:56ch;}
.meta{font-size:.9rem;color:var(--muted);}

/* Botones */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:52px;padding:0 26px;border:0;border-radius:6px;
  font:600 1.02rem/1 var(--sans);text-decoration:none;cursor:pointer;
  transition:background-color .2s ease, filter .2s ease, box-shadow .2s ease;
}
.btn svg{width:20px;height:20px;flex:none;}
.btn-wa{background:var(--wa);color:var(--wa-ink);}
.btn-wa:hover{filter:brightness(1.1);}
.btn-outline{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--ink);}
.btn-outline:hover{background:var(--soft);}
.btn-sm{min-height:42px;padding:0 18px;font-size:.95rem;}
.on-band .btn-wa{box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.4);}

/* Encabezado */
.top{border-bottom:1px solid var(--line);background:var(--bg);}
.bar{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:88px;}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;}
.brand img{width:64px;height:64px;border-radius:50%;flex:none;}
@media (min-width:900px){.brand img{width:80px;height:80px;}.bar{min-height:104px;}}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font:700 1.3rem/1 var(--serif);letter-spacing:.08em;}
.brand-tag{display:none;font-size:.75rem;color:var(--muted);margin-top:4px;}
.nav{display:none;gap:26px;}
.nav a{white-space:nowrap;text-decoration:none;font-weight:500;color:var(--muted);transition:color .2s ease;}
.nav a:hover{color:var(--ink);}
@media (min-width:520px){.brand-tag{display:block;}}
@media (min-width:1100px){.nav{display:flex;}}

/* Portada */
.hero{padding:64px 0 80px;text-align:center;}
.hero .copy{max-width:860px;margin:0 auto;}
.hero h1{font:700 clamp(2.3rem,7vw,4.2rem)/1.05 var(--serif);letter-spacing:-.02em;max-width:22ch;margin:0 auto;text-wrap:balance;}
.hero-sub{margin:22px auto 0;font-size:clamp(1.1rem,2.4vw,1.3rem);line-height:1.55;color:var(--muted);max-width:44ch;}
.cta-row{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:32px;}
.hero-note{margin-top:20px;}
@media (max-width:519px){.cta-row .btn{flex:1 1 100%;}}
@media (min-width:900px){.hero{padding:120px 0 136px;}}
@media (prefers-reduced-motion: no-preference){
  .fade{animation:fade .7s ease both;}
  .fade.d1{animation-delay:.08s;}
  .fade.d2{animation-delay:.16s;}
  .fade.d3{animation-delay:.24s;}
  @keyframes fade{from{opacity:0}to{opacity:1}}
}

/* Servicios más buscados */
.quick{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.quick-label{padding-top:18px;}
.quick ul{display:grid;grid-template-columns:1fr 1fr;margin-top:8px;}
.quick li{border-top:1px solid var(--line);}
.quick li:nth-child(even){border-left:1px solid var(--line);}
.quick li:last-child:nth-child(odd){grid-column:1 / -1;}
.quick a{display:flex;align-items:center;min-height:60px;padding:0 4px 0 16px;font-weight:600;text-decoration:none;line-height:1.3;transition:color .2s ease;}
.quick li:nth-child(odd) a{padding-left:0;}
.quick a:hover{color:var(--accent);}
@media (min-width:900px){
  .quick ul{grid-template-columns:repeat(5,1fr);}
  .quick li{border-top:0;border-left:1px solid var(--line);}
  .quick li:first-child{border-left:0;}
  .quick li:nth-child(even){border-left:1px solid var(--line);}
  .quick li:last-child:nth-child(odd){grid-column:auto;}
  .quick a,.quick li:nth-child(odd) a{justify-content:center;text-align:center;min-height:72px;padding:0 12px;}
}

/* Secciones */
.sec{padding:72px 0;}
@media (min-width:900px){.sec{padding:104px 0;}}
.sec-head{margin-bottom:40px;}
.soft{background:var(--soft);}

/* Servicios */
.group + .group{margin-top:56px;}
.group h3{font:700 1.45rem/1.2 var(--serif);}
.group .meta{margin-top:4px;}
.cards{display:grid;gap:16px;margin-top:20px;}
@media (min-width:700px){.cards{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1000px){.cards{grid-template-columns:repeat(3,1fr);}}
.card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:6px;
  padding:24px;transition:border-color .2s ease;
}
.card:hover{border-color:var(--accent);}
.card h4{font:600 1.15rem/1.3 var(--sans);margin:0;}
.card p{margin-top:8px;color:var(--muted);font-size:.98rem;}
.more{
  margin-top:auto;padding-top:14px;align-self:flex-start;
  display:inline-flex;align-items:center;min-height:44px;
  font-weight:600;font-size:.95rem;color:var(--accent);
  text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1.5px;
}
.notice{
  margin-top:24px;padding:22px 24px;background:var(--soft);border:1px solid var(--line);border-radius:6px;
  display:grid;gap:14px;
}
.notice h4{font:600 1.1rem/1.3 var(--sans);margin:0 0 6px;}
.notice p{color:var(--muted);font-size:.98rem;max-width:70ch;}
@media (min-width:900px){.notice{grid-template-columns:1fr auto;align-items:center;gap:32px;}}

/* Certificación */
.cert{background:var(--band);color:var(--band-ink);}
.cert-grid{display:grid;gap:40px;}
.cert .lede{color:var(--band-muted);}
.cert .cta{margin-top:28px;}
.uses{display:grid;grid-template-columns:1fr 1fr;gap:0 24px;margin-top:28px;max-width:440px;}
.uses li{padding:12px 0;border-top:1px solid rgba(255,255,255,.18);font-weight:500;font-size:.98rem;}
.incl{background:var(--surface);color:var(--ink);border-radius:6px;padding:28px 24px;}
.incl h3{font:700 1.3rem/1.2 var(--serif);}
.incl ul{margin-top:12px;}
.incl li{display:flex;gap:12px;padding:14px 0;border-top:1px solid var(--line);}
.incl svg{width:20px;height:20px;color:var(--accent);flex:none;margin-top:3px;}
.incl strong{display:block;font-weight:600;}
.incl span{color:var(--muted);font-size:.96rem;}
@media (min-width:900px){
  .cert-grid{grid-template-columns:1fr 1fr;gap:80px;align-items:center;}
  .incl{padding:36px 36px 28px;}
}

/* Por qué SEINCO */
.why-grid{display:grid;gap:0;}
.why-item{padding:24px 0;border-top:2px solid var(--ink);}
.why-item h3{font:600 1.15rem/1.3 var(--sans);}
.why-item p{margin-top:8px;color:var(--muted);font-size:.98rem;}
.why-foot{margin-top:32px;color:var(--muted);}
.why-foot strong{color:var(--ink);font-weight:600;}
@media (min-width:700px){.why-grid{grid-template-columns:repeat(2,1fr);column-gap:40px;}}
@media (min-width:1000px){.why-grid{grid-template-columns:repeat(4,1fr);column-gap:32px;}}

/* Proceso */
.steps{display:grid;gap:0;}
.step{padding:24px 0;border-top:1px solid var(--line);}
.step-n{font:700 2rem/1 var(--serif);color:var(--accent);}
.step h3{margin-top:12px;font:600 1.2rem/1.3 var(--sans);}
.step p{margin-top:6px;color:var(--muted);}
@media (min-width:760px){.steps{grid-template-columns:repeat(3,1fr);column-gap:48px;}}

/* Preguntas */
.faq-grid{display:grid;gap:32px;}
.faq details{border-top:1px solid var(--line);}
.faq details:last-child{border-bottom:1px solid var(--line);}
.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:14px 0;font-weight:600;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{
  content:"+";flex:none;width:30px;height:30px;border-radius:50%;
  display:grid;place-items:center;font-weight:500;font-size:1.25rem;line-height:1;
  color:var(--accent);box-shadow:inset 0 0 0 1.5px var(--line);
}
.faq details[open] summary::after{content:"\2212";}
.faq details p{padding:0 0 20px;color:var(--muted);max-width:64ch;}
@media (min-width:900px){.faq-grid{grid-template-columns:.7fr 1.3fr;gap:80px;align-items:start;}}

/* Contacto */
.contact-grid{display:grid;gap:36px;}
.rows{border-top:1px solid var(--line);}
.row{display:grid;gap:6px;padding:18px 0;border-bottom:1px solid var(--line);}
.row dt{font-size:.9rem;color:var(--muted);}
.row dd{font-weight:600;font-size:1.08rem;}
.row dd a{text-decoration:none;}
.row .call{font-weight:500;font-size:.95rem;color:var(--accent);text-decoration:underline;text-underline-offset:4px;margin-left:14px;}
.contact .btn{margin-top:28px;}
@media (min-width:900px){.contact-grid{grid-template-columns:1fr 1fr;gap:80px;align-items:center;}}

/* Pie */
.foot{background:var(--band);color:var(--band-ink);padding:52px 0 96px;}
.foot-grid{display:grid;gap:32px;}
.foot img{width:72px;height:72px;border-radius:50%;}
.foot-brand p{margin-top:14px;color:var(--band-muted);font-size:.95rem;max-width:36ch;}
.foot h2{font:600 .95rem/1.2 var(--sans);margin-bottom:12px;}
.foot li + li{margin-top:2px;}
.foot a{display:inline-block;padding:5px 0;color:var(--band-muted);text-decoration:none;font-size:.95rem;transition:color .2s ease;}
.foot a:hover{color:#FFFFFF;}
.foot-cols{display:grid;grid-template-columns:1fr 1fr;gap:32px 24px;}
.foot-base{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.16);color:var(--band-muted);font-size:.88rem;}
@media (min-width:900px){
  .foot{padding:60px 0 40px;}
  .foot-grid{grid-template-columns:1.1fr 2fr;gap:64px;}
  .foot-cols{grid-template-columns:repeat(3,1fr);}
}

/* Botón flotante (móvil) */
.float{
  position:fixed;right:16px;bottom:calc(16px + env(safe-area-inset-bottom,0px));z-index:20;
  min-height:54px;padding:0 22px;border-radius:999px;
  box-shadow:0 2px 10px rgba(0,0,0,.22);
  transition:opacity .2s ease, transform .2s ease;
}
.float.is-hidden{opacity:0;transform:translateY(10px);pointer-events:none;}
@media (min-width:900px){.float{display:none;}}

/* ===== Páginas de servicio ===== */
.btn-outline-light{background:transparent;color:#FFFFFF;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.55);}
.btn-outline-light:hover{background:rgba(255,255,255,.1);}
.cert .cta{display:flex;flex-wrap:wrap;gap:12px;}
.crumbs{padding-top:20px;font-size:.9rem;color:var(--muted);}
.crumbs a{color:var(--muted);text-decoration:underline;text-underline-offset:3px;}
.crumbs [aria-current]{color:var(--ink);}
.page-hero{padding:28px 0 64px;}
.page-hero-grid{display:grid;gap:32px;}
.page-hero h1{font:700 clamp(2rem,5.6vw,3.3rem)/1.08 var(--serif);letter-spacing:-.02em;max-width:17ch;text-wrap:balance;}
.page-hero .lede{margin-top:18px;max-width:46ch;}
.page-hero .cta-row{justify-content:flex-start;}
.art-frame{margin:0;border-radius:10px;overflow:hidden;background:#E3EBF5;border:1px solid var(--line);}
.art-frame img{display:block;width:100%;height:auto;}
@media (min-width:900px){
  .page-hero{padding:56px 0 96px;}
  .page-hero-grid{grid-template-columns:1.05fr .95fr;gap:64px;align-items:center;}
}
.prose{max-width:66ch;}
.prose p{margin-top:16px;color:var(--muted);}
.prose p:first-of-type{margin-top:18px;}
.prose strong{color:var(--ink);font-weight:600;}
.two-col{display:grid;gap:40px;}
@media (min-width:900px){.two-col{grid-template-columns:.8fr 1.2fr;gap:80px;align-items:start;}}
.ticks li{display:flex;gap:14px;padding:14px 0;border-top:1px solid var(--line);}
.ticks li:last-child{border-bottom:1px solid var(--line);}
.ticks li::before{
  content:"";flex:none;width:20px;height:20px;margin-top:4px;background:var(--accent);
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center/contain no-repeat;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center/contain no-repeat;
}
.ticks strong{display:block;font-weight:600;}
.ticks span{color:var(--muted);font-size:.97rem;}
.doclist{border-bottom:1px solid var(--line);}
.doclist .row{display:grid;gap:2px;padding:16px 0;border-top:1px solid var(--line);}
.doclist .row dt{font-weight:600;font-size:1rem;color:var(--ink);}
.doclist .row dd{font-weight:400;font-size:.98rem;color:var(--muted);}
@media (min-width:900px){.doclist .row{grid-template-columns:210px 1fr;gap:24px;}}
.note{margin-top:16px;color:var(--muted);font-size:.93rem;max-width:66ch;}
.compare{display:grid;gap:16px;margin-top:8px;}
@media (min-width:800px){.compare{grid-template-columns:1fr 1fr;}}
.cta-band{background:var(--band);color:var(--band-ink);padding:80px 0;text-align:center;}
.cta-band .title{max-width:26ch;margin:0 auto;text-wrap:balance;}
.cta-band p{margin:16px auto 0;max-width:46ch;color:var(--band-muted);font-size:1.1rem;}
.cta-band .btn{margin-top:28px;}
.cta-band .phone{margin-top:20px;font-size:.98rem;}
.cta-band .phone a{color:var(--band-ink);}
.foot{border-top:1px solid rgba(255,255,255,.14);}
@media (min-width:900px){.two-col.even{grid-template-columns:1fr 1fr;gap:72px;}}