/* El Arquitecto Digital · hoja compartida para páginas SEO
   Ligera y sin dependencias: una sola descarga cacheada para todo el sitio. */
:root{
  --surface:#0e1416;
  --surface-low:#171d1e;
  --surface-c:#1b2122;
  --surface-high:#252b2d;
  --on-surface:#dee3e6;
  --on-variant:#bcc9cd;
  --outline:#869397;
  --primary:#4cd7f6;
  --on-primary:#003640;
  --tertiary:#ffb873;
  --ok:#4ade80;
  --line:rgba(134,147,151,.16);
  --glow:rgba(76,215,246,.35);
  --glow-soft:rgba(76,215,246,.12);
  --maxw:1080px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--surface);color:var(--on-surface);
  font-family:Inter,system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
h1,h2,h3,h4,.brand,.btn,.eyebrow{font-family:'Space Grotesk',Inter,sans-serif}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto}

/* Fondo técnico sutil */
body::before{
  content:'';position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(70% 50% at 50% 0%,rgba(76,215,246,.10),transparent 70%),
    linear-gradient(rgba(76,215,246,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(76,215,246,.03) 1px,transparent 1px);
  background-size:100% 100%,46px 46px,46px 46px;
}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(14,20,22,.88);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.hdr{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{font-size:13px;font-weight:700;letter-spacing:.13em;color:var(--primary);white-space:nowrap}
.brand span{color:var(--on-surface)}
.nav{display:flex;align-items:center;gap:22px}
.nav a{font-size:14px;color:var(--on-variant);transition:color .2s}
.nav a:hover{color:var(--primary)}
.nav .cta{
  background:var(--primary);color:var(--on-primary);font-weight:700;font-size:13px;
  padding:9px 16px;letter-spacing:.04em;
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px));
}
.nav .cta:hover{color:var(--on-primary);box-shadow:0 0 18px var(--glow)}
.menu-btn{display:none;background:none;border:1px solid var(--line);color:var(--on-surface);
  font-size:20px;line-height:1;padding:6px 10px;cursor:pointer}
@media(max-width:860px){
  .nav{position:absolute;top:62px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;
    background:var(--surface-low);border-bottom:1px solid var(--line);max-height:0;overflow:hidden;transition:max-height .3s}
  .nav.open{max-height:420px}
  .nav a{padding:14px 20px;border-bottom:1px solid var(--line)}
  .nav .cta{margin:14px 20px;text-align:center;clip-path:none}
  .menu-btn{display:block}
}

/* ---------- Migas ---------- */
.crumbs{font-size:12.5px;color:var(--outline);padding:16px 0 0}
.crumbs a:hover{color:var(--primary)}
.crumbs span{margin:0 6px}

/* ---------- Hero ---------- */
.hero{padding:44px 0 34px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 12px;margin-bottom:16px;
  border:1px solid rgba(76,215,246,.4);color:var(--primary);
  font-size:10px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;
}
.eyebrow::before{content:'';width:6px;height:6px;background:var(--ok);box-shadow:0 0 8px var(--ok)}
h1{font-size:clamp(28px,5.2vw,44px);line-height:1.1;letter-spacing:-.02em;font-weight:700;margin-bottom:16px}
h1 .accent{color:var(--primary)}
.lead{font-size:clamp(16px,2.4vw,19px);color:var(--on-variant);max-width:62ch;margin-bottom:14px}
.sub{font-size:15.5px;color:var(--outline);max-width:64ch;margin-bottom:26px}

/* ---------- Botones ---------- */
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:10px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:15px 22px;font-size:14px;font-weight:700;letter-spacing:.04em;cursor:pointer;transition:all .22s;
  clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px));
}
.btn-primary{background:var(--primary);color:var(--on-primary);border:none}
.btn-primary:hover{box-shadow:0 0 26px var(--glow);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--on-variant);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-wa{background:transparent;color:var(--ok);border:1px solid var(--ok)}
.btn-wa:hover{background:rgba(74,222,128,.08)}
.note{font-size:13px;color:var(--outline);display:flex;align-items:center;gap:8px}

/* ---------- Secciones ---------- */
section{padding:40px 0}
h2{font-size:clamp(22px,3.6vw,30px);line-height:1.2;letter-spacing:-.01em;margin-bottom:14px}
h3{font-size:17px;margin-bottom:8px;color:var(--on-surface)}
p{margin-bottom:14px;color:var(--on-variant)}
p strong,li strong{color:var(--on-surface)}
.section-tag{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--primary);margin-bottom:10px;font-weight:600}

/* ---------- Rejillas y tarjetas ---------- */
.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card{
  border:1px solid var(--line);background:var(--surface-low);padding:22px 20px;
  clip-path:polygon(0 0,calc(100% - 14px) 0,100% 14px,100% 100%,14px 100%,0 calc(100% - 14px));
}
.card.accent{border-color:rgba(76,215,246,.35);background:rgba(76,215,246,.05)}
.card .num{font-size:28px;font-weight:700;color:var(--primary);line-height:1;margin-bottom:10px;font-family:'Space Grotesk',sans-serif}
.card p:last-child{margin-bottom:0}

/* Listas con viñeta técnica */
ul.ticks{list-style:none;display:grid;gap:10px;margin-bottom:16px}
ul.ticks li{display:flex;gap:10px;align-items:flex-start;color:var(--on-variant);font-size:15px}
ul.ticks li::before{content:'';flex:0 0 6px;width:6px;height:6px;margin-top:9px;background:var(--primary);box-shadow:0 0 7px var(--primary)}
ul.warn li::before{background:var(--tertiary);box-shadow:0 0 7px var(--tertiary)}

/* Datos / métricas */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin:6px 0 8px}
.stat{border:1px solid var(--line);padding:18px 16px;background:var(--surface-c)}
.stat b{display:block;font-family:'Space Grotesk',sans-serif;font-size:26px;color:var(--primary);line-height:1}
.stat span{font-size:13px;color:var(--outline);display:block;margin-top:6px}

/* Tabla */
.tablewrap{overflow-x:auto;border:1px solid var(--line);background:var(--surface-low)}
table{width:100%;border-collapse:collapse;font-size:14px;min-width:520px}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
th{background:var(--surface-c);color:var(--outline);font-size:11px;letter-spacing:.08em;text-transform:uppercase}

/* FAQ */
.faq{border:1px solid var(--line);background:var(--surface-low);margin-bottom:10px}
.faq summary{
  padding:16px 18px;cursor:pointer;font-weight:600;color:var(--on-surface);font-size:15.5px;
  list-style:none;display:flex;justify-content:space-between;gap:14px;align-items:center;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';color:var(--primary);font-size:20px;line-height:1;flex:0 0 auto}
.faq[open] summary::after{content:'−'}
.faq p{padding:0 18px 18px;margin:0;font-size:15px}

/* CTA final */
.cta-band{border:1px solid rgba(76,215,246,.35);background:rgba(76,215,246,.06);padding:30px 24px;text-align:center}
.cta-band h2{margin-bottom:10px}
.cta-band p{max-width:60ch;margin:0 auto 20px}
.cta-band .actions{justify-content:center}

/* Enlazado interno */
.links{display:flex;flex-wrap:wrap;gap:9px}
.links a{
  font-size:13px;color:var(--on-variant);border:1px solid var(--line);
  padding:8px 13px;transition:all .2s;background:var(--surface-low);
}
.links a:hover{border-color:var(--primary);color:var(--primary)}

/* Footer */
footer{border-top:1px solid var(--line);margin-top:40px;padding:34px 0 40px}
.fgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:26px;margin-bottom:26px}
footer h4{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--outline);margin-bottom:12px}
footer ul{list-style:none;display:grid;gap:8px}
footer a{font-size:13.5px;color:var(--on-variant)}
footer a:hover{color:var(--primary)}
.fbot{border-top:1px solid var(--line);padding-top:18px;font-size:12.5px;color:var(--outline);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between}

/* WhatsApp flotante */
.wa-float{
  position:fixed;right:18px;bottom:18px;z-index:60;width:54px;height:54px;border-radius:50%;
  background:#25D366;color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 22px rgba(0,0,0,.4);transition:transform .15s;
}
.wa-float:hover{transform:scale(1.08)}

/* Popup no invasivo (panel deslizante en esquina) */
.ead-pop{
  position:fixed;right:18px;bottom:88px;z-index:70;
  width:min(340px,calc(100vw - 32px));
  background:var(--surface-c);border:1px solid var(--line);border-top:2px solid var(--primary);
  box-shadow:0 18px 50px rgba(0,0,0,.5);padding:18px 18px 14px;
  transform:translateY(20px);opacity:0;visibility:hidden;pointer-events:none;
  transition:transform .5s cubic-bezier(.22,1,.36,1),opacity .5s,visibility .5s;
  clip-path:polygon(0 0,calc(100% - 14px) 0,100% 14px,100% 100%,14px 100%,0 calc(100% - 14px));
}
.ead-pop.show{transform:none;opacity:1;visibility:visible;pointer-events:auto}
.ead-pop .x{position:absolute;top:9px;right:12px;background:none;border:none;color:var(--outline);
  font-size:20px;line-height:1;cursor:pointer}
.ead-pop .x:hover{color:var(--primary)}
.ead-pop .eyebrow{margin-bottom:8px}
.ead-pop h4{font-size:16px;color:var(--on-surface);margin-bottom:4px;font-family:'Space Grotesk',sans-serif}
.ead-pop .s{font-size:12.5px;color:var(--outline);margin-bottom:14px;line-height:1.4}
.ead-opt{display:block;position:relative;border:1px solid var(--line);background:var(--surface-low);
  padding:11px 13px;margin-bottom:9px;transition:all .18s;cursor:pointer}
.ead-opt:last-of-type{margin-bottom:0}
.ead-opt:hover{border-color:var(--primary);background:rgba(76,215,246,.08)}
.ead-opt b{display:block;font-size:14px;color:var(--on-surface);font-family:'Space Grotesk',sans-serif}
.ead-opt span.d{font-size:12px;color:var(--on-variant)}
.ead-opt .arw{position:absolute;right:12px;top:50%;transform:translateY(-50%);color:var(--primary);font-size:16px}
@media(max-width:520px){.ead-pop{right:10px;left:10px;bottom:80px;width:auto}}

@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}