/* ==========================================================================
   DINSI Ingeniería & Soluciones — Sistema de diseño
   Paleta: azul marino · acero · blanco
   REV. 02
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root{
  color-scheme: light;

  /* Color — identidad DINSI (extraída del logo) */
  --c-bg:            #ffffff;
  --c-bg-alt:        #f5f7fa;
  --c-bg-alt-2:      #eceff5;
  --c-ink:           #10162e;   /* casi negro con sesgo marino */
  --c-navy:          #161f4a;   /* AZUL MARINO DE MARCA */
  --c-navy-deep:     #c0c8ed;   /* fondos oscuros #c0c8ed 0c1128*/
  --c-navy-mid:      #26326b;

  --c-green:         #66ab2e;   /* VERDE DE MARCA — marcadores gráficos */
  --c-green-ink:     #497b21;   /* verde legible sobre blanco (5.07:1) */
  --c-green-soft:    #eef6e7;

  --c-orange:        #f46717;   /* NARANJA DE MARCA — acción */
  --c-orange-ink:    #be5011;   /* naranja legible sobre blanco (4.83:1) */

  --c-accent:        #be5011;   /* enlaces y llamados a la acción */
  --c-accent-dark:   #98400d;
  --c-accent-soft:   #fdf0e8;

  --c-steel:         #5b6478;   /* texto secundario (5.93:1) */
  --c-steel-light:   #8790a3;
  --c-line:          #dde1e9;
  --c-line-strong:   #c3cad8;
  --c-line-dark:     rgba(255,255,255,.14);
  --c-on-dark:       #e8ebf3;
  --c-on-dark-dim:   #a3abc4;

  /* Tipografía */
  --f-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --t-display: clamp(2.25rem, 1.35rem + 3.6vw, 4rem);
  --t-h1:      clamp(1.95rem, 1.3rem + 2.6vw, 3.15rem);
  --t-h2:      clamp(1.5rem, 1.15rem + 1.5vw, 2.2rem);
  --t-h3:      clamp(1.12rem, 1rem + .5vw, 1.35rem);
  --t-lead:    clamp(1.02rem, .96rem + .35vw, 1.2rem);
  --t-body:    1rem;
  --t-sm:      .875rem;
  --t-xs:      .78rem;

  /* Espaciado y forma */
  --sp-section: clamp(3.5rem, 2rem + 6vw, 6.5rem);
  --wrap: 1180px;
  --wrap-narrow: 760px;
  --r-sm: 3px;
  --r-md: 6px;
  --r-lg: 10px;

  --shadow-sm: 0 1px 2px rgba(12,28,44,.05);
  --shadow-md: 0 8px 24px -12px rgba(12,28,44,.22);
  --shadow-lg: 0 22px 48px -22px rgba(12,28,44,.30);

  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. Base ---------- */
*,*::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(--c-bg);
  color:var(--c-ink);
  font-family:var(--f-sans);
  font-size:var(--t-body);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{ max-width:100%; height:auto; display:block; }
h1,h2,h3,h4{ margin:0; font-weight:600; line-height:1.15; letter-spacing:-.021em;
  color:var(--c-navy); text-wrap:balance; }
h1{ font-size:var(--t-h1); }
h2{ font-size:var(--t-h2); }
h3{ font-size:var(--t-h3); letter-spacing:-.012em; }
p{ margin:0 0 1.05em; }
p:last-child{ margin-bottom:0; }
a{ color:var(--c-accent); text-decoration:none; }
a:hover{ color:var(--c-accent-dark); text-decoration:underline; text-underline-offset:3px; }
ul,ol{ margin:0 0 1.05em; padding-left:1.15em; }
li{ margin-bottom:.4em; }
strong{ font-weight:600; color:var(--c-navy); }
hr{ border:0; border-top:1px solid var(--c-line); margin:2.5rem 0; }
:focus-visible{ outline:2px solid var(--c-accent); outline-offset:3px; border-radius:2px; }

.skip-link{
  position:absolute; left:-9999px; top:0; z-index:200;
  background:var(--c-navy); color:#fff; padding:.7rem 1.1rem; border-radius:0 0 var(--r-md) 0;
  font-size:var(--t-sm); font-weight:500;
}
.skip-link:focus{ left:0; }

/* ---------- 3. Layout ---------- */
.wrap{ width:100%; max-width:var(--wrap); margin-inline:auto; padding-inline:clamp(1.15rem,4vw,2rem); }
.wrap--narrow{ max-width:var(--wrap-narrow); }
.section{ padding-block:var(--sp-section); }
.section--tight{ padding-block:clamp(2.5rem,1.5rem + 4vw,4.25rem); }
.section--alt{ background:var(--c-bg-alt); border-block:1px solid var(--c-line); }
.section--dark{ background:var(--c-navy-deep); color:var(--c-on-dark); }
.section--dark h2,.section--dark h3{ color:#fff; }
.section--dark p{ color:var(--c-on-dark-dim); }

.grid{ display:grid; gap:1.5rem; }
.grid-2{ grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); }
.grid-3{ grid-template-columns:repeat(auto-fit,minmax(268px,1fr)); }
.stack > * + *{ margin-top:1.1rem; }

/* ---------- 4. Tipografía de apoyo ---------- */
.eyebrow{
  font-family:var(--f-mono);
  font-size:var(--t-xs);
  font-weight:500;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--c-green-ink);
  margin:0 0 .9rem;
  display:flex; align-items:center; gap:.65rem;
}
.eyebrow::after{ content:""; flex:0 0 34px; height:1px; background:var(--c-line-strong); }
.eyebrow--plain::after{ display:none; }
@media (max-width:640px){ .eyebrow{ flex-wrap:wrap; } .eyebrow::after{ display:none; } }
@media (max-width:430px){ .brand-tag{ display:none; } }
.section--dark .eyebrow{ color:var(--c-green); }
.section--dark .eyebrow::after{ background:var(--c-line-dark); }

.lead{ font-size:var(--t-lead); color:var(--c-steel); max-width:62ch; line-height:1.6; }
.section--dark .lead{ color:var(--c-on-dark-dim); }
.muted{ color:var(--c-steel); }
.small{ font-size:var(--t-sm); }
.mono{ font-family:var(--f-mono); }

.section-head{ max-width:60ch; margin-bottom:clamp(2rem,1.2rem + 2.4vw,3.25rem); }
.section-head .lead{ margin-top:1rem; }

/* ---------- 5. Botones ---------- */
.btn{
  display:inline-flex; align-items:center; gap:.5rem;
  font-size:var(--t-sm); font-weight:500; letter-spacing:.005em;
  padding:.78rem 1.35rem; border-radius:var(--r-md);
  border:1px solid transparent; cursor:pointer;
  transition:background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease), transform .18s var(--ease);
  text-decoration:none !important; white-space:nowrap;
}
.btn:hover{ transform:translateY(-1px); }
.btn--primary{ background:var(--c-navy); color:#fff; }
.btn--primary:hover{ background:var(--c-accent-dark); color:#fff; }
.btn--accent{ background:var(--c-orange); color:var(--c-navy); font-weight:600; }
.btn--accent:hover{ background:#dd5a11; color:var(--c-navy); }
.btn--ghost{ background:transparent; color:var(--c-navy); border-color:var(--c-line-strong); }
.btn--ghost:hover{ border-color:var(--c-navy); background:var(--c-accent-soft); color:var(--c-navy); }
.btn--light{ background:#fff; color:var(--c-navy); }
.btn--light:hover{ background:var(--c-accent-soft); color:var(--c-navy); }
.btn--outline-light{ background:transparent; color:#fff; border-color:rgba(255,255,255,.32); }
.btn--outline-light:hover{ background:rgba(255,255,255,.09); color:#fff; border-color:rgba(255,255,255,.55); }
.btn-row{ display:flex; flex-wrap:wrap; gap:.75rem; margin-top:1.9rem; }

.link-arrow{ font-weight:500; font-size:var(--t-sm); display:inline-flex; align-items:center; gap:.4rem; }
.link-arrow span{ transition:transform .18s var(--ease); }
.link-arrow:hover span{ transform:translateX(3px); }

/* ---------- 6. Header ---------- */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--c-line);
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; gap:1.5rem; min-height:76px; }

.brand{ display:flex; align-items:center; gap:.75rem; text-decoration:none !important; }
.brand:hover{ text-decoration:none; }
.brand-mark{ flex:0 0 auto; width:auto; height:40px; display:block; }
.brand--footer{ display:block; }
.brand--footer img{ width:200px; max-width:100%; height:auto; }
.brand-text{ display:flex; flex-direction:column; line-height:1.15; }
.brand-name{ font-size:.95rem; font-weight:600; color:var(--c-navy); letter-spacing:-.012em; }
.brand-tag{ white-space:nowrap; font-family:var(--f-mono); font-size:.575rem; letter-spacing:.135em; text-transform:uppercase; color:var(--c-steel-light); margin-top:.22rem; }

.nav{ display:flex; align-items:center; gap:.35rem; }
.nav a{
  font-size:var(--t-sm); font-weight:500; color:var(--c-navy);
  padding:.5rem .8rem; border-radius:var(--r-sm);
  text-decoration:none !important;
  transition:background .16s var(--ease), color .16s var(--ease);
}
.nav a:hover{ background:var(--c-bg-alt); color:var(--c-accent); }
.nav a[aria-current="page"]{ color:var(--c-accent); background:var(--c-accent-soft); }
.nav > .btn{ display:none; }
.header-cta{ display:flex; align-items:center; gap:.6rem; }

.nav-toggle{
  display:none; width:42px; height:42px; border:1px solid var(--c-line-strong);
  background:#fff; border-radius:var(--r-md); cursor:pointer; padding:0;
  place-items:center; color:var(--c-navy);
}
.nav-toggle span{ display:block; width:17px; height:1.5px; background:currentColor; position:relative; }
.nav-toggle span::before,.nav-toggle span::after{
  content:""; position:absolute; left:0; width:17px; height:1.5px; background:currentColor;
  transition:transform .2s var(--ease), top .2s var(--ease);
}
.nav-toggle span::before{ top:-5.5px; }
.nav-toggle span::after{ top:5.5px; }
.nav-toggle[aria-expanded="true"] span{ background:transparent; }
.nav-toggle[aria-expanded="true"] span::before{ top:0; transform:rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after{ top:0; transform:rotate(-45deg); }

@media (max-width: 900px){
  .nav-toggle{ display:grid; }
  .header-inner{ min-height:66px; }
  .nav{
    position:absolute; left:0; right:0; top:100%;
    flex-direction:column; align-items:stretch; gap:0;
    background:#fff; border-bottom:1px solid var(--c-line);
    padding:.6rem clamp(1.15rem,4vw,2rem) 1.2rem;
    box-shadow:var(--shadow-md);
    display:none;
  }
  .nav[data-open="true"]{ display:flex; }
  .nav a{ padding:.8rem .4rem; border-bottom:1px solid var(--c-line); border-radius:0; }
  .nav a:last-of-type{ border-bottom:0; }
  .nav > .btn{ display:inline-flex; margin-top:.9rem; justify-content:center; }
  .header-cta .btn{ display:none; }
}

/* ---------- 7. Hero ---------- */
.hero{
  position:relative; overflow:hidden;
  background:
    linear-gradient(180deg, #131a42 0%, var(--c-navy-deep) 100%);
  color:var(--c-on-dark);
  padding-block:clamp(3.75rem,2.2rem + 7vw,7rem);
}
.hero::before{
  content:""; position:absolute; inset:0; opacity:.5; pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 85% 70% at 72% 22%, #000 10%, transparent 78%);
}
.hero::after{
  content:""; position:absolute; right:-12%; top:-25%; width:640px; height:640px;
  background:radial-gradient(circle, rgba(102,171,46,.30) 0%, transparent 66%);
  pointer-events:none;
}
.hero .wrap{ position:relative; z-index:1; }
.hero h1{ color:#fff; font-size:var(--t-display); max-width:17ch; letter-spacing:-.028em; }
.hero .lead{ color:#b9c0d6; margin-top:1.5rem; max-width:58ch; }
.hero .eyebrow{ color:var(--c-green); }
.hero .eyebrow::after{ background:rgba(255,255,255,.22); }

.page-hero{
  background:var(--c-navy-deep); color:var(--c-on-dark);
  padding-block:clamp(2.75rem,1.8rem + 4.5vw,4.75rem);
  position:relative; overflow:hidden;
}
.page-hero::after{
  content:""; position:absolute; right:-8%; top:-40%; width:520px; height:520px;
  background:radial-gradient(circle, rgba(102,171,46,.26) 0%, transparent 68%);
  pointer-events:none;
}
.page-hero .wrap{ position:relative; z-index:1; }
.page-hero h1{ color:#fff; max-width:20ch; }
.page-hero .lead{ color:#b9c0d6; margin-top:1.25rem; }
.page-hero .eyebrow{ color:var(--c-green); }
.page-hero .eyebrow::after{ background:rgba(255,255,255,.22); }

.breadcrumb{
  font-family:var(--f-mono); font-size:var(--t-xs); letter-spacing:.05em;
  color:var(--c-on-dark-dim); margin-bottom:1.4rem;
}
.breadcrumb a{ color:var(--c-on-dark-dim); }
.breadcrumb a:hover{ color:#fff; }
.breadcrumb span{ opacity:.5; margin-inline:.45rem; }

/* ---------- 8. Métricas ---------- */
.stats{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
  gap:1px; background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.14); border-radius:var(--r-md);
  margin-top:3rem; overflow:hidden;
}
.stat{ background:rgba(255,255,255,.028); padding:1.4rem 1.35rem; }
.stat-value{ font-size:2rem; font-weight:600; color:#fff; line-height:1; letter-spacing:-.03em; }
.stat-label{ font-size:var(--t-xs); color:var(--c-on-dark-dim); margin-top:.55rem; line-height:1.45; }

/* ---------- 9. Tarjetas ---------- */
.card{
  background:#fff; border:1px solid var(--c-line); border-radius:var(--r-lg);
  padding:1.75rem 1.6rem; display:flex; flex-direction:column; gap:.7rem;
  transition:border-color .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease);
}
a.card{ text-decoration:none !important; color:inherit; }
a.card:hover{ border-color:var(--c-accent); box-shadow:var(--shadow-md); transform:translateY(-2px); }
.card-index{
  font-family:var(--f-mono); font-size:var(--t-xs); font-weight:500;
  letter-spacing:.13em; text-transform:uppercase; color:var(--c-green-ink);
}
.card h3{ margin-top:.1rem; }
.card p{ color:var(--c-steel); font-size:var(--t-sm); line-height:1.6; }
.card .link-arrow{ margin-top:auto; padding-top:.6rem; }
.tags{ display:flex; flex-wrap:wrap; gap:.4rem; margin-top:.35rem; list-style:none; padding:0; }
.tags li{ margin:0; }
.tag{
  display:inline-block; font-family:var(--f-mono); font-size:.68rem; letter-spacing:.06em;
  text-transform:uppercase; color:var(--c-steel);
  background:var(--c-bg-alt); border:1px solid var(--c-line);
  padding:.24rem .55rem; border-radius:100px;
}

/* ---------- 10. Sectores (barras) ---------- */
.sector{ border-top:1px solid var(--c-line); padding-block:1.7rem; display:grid; grid-template-columns:96px 1fr; gap:.6rem 1.5rem; align-items:start; }
.sector .sector-bar{ grid-column:1 / -1; margin-top:.9rem; }
.sector:last-child{ border-bottom:1px solid var(--c-line); }
.sector-share{ font-family:var(--f-mono); font-size:1.55rem; font-weight:500; color:var(--c-navy); letter-spacing:-.02em; }
.sector-bar{ height:3px; background:var(--c-line); border-radius:100px; overflow:hidden; }
.sector-bar i{ display:block; height:100%; background:var(--c-green); border-radius:100px; }
.sector h3{ margin-bottom:.45rem; }
.sector p{ color:var(--c-steel); font-size:var(--t-sm); margin:0; max-width:64ch; }
@media (max-width:560px){ .sector{ grid-template-columns:1fr; gap:.75rem; } }

/* ---------- 11. Fases ---------- */
.phases{ display:grid; grid-template-columns:repeat(auto-fit,minmax(250px,1fr)); gap:0; border:1px solid var(--c-line); border-radius:var(--r-lg); overflow:hidden; background:#fff; }
.phase{ padding:1.9rem 1.7rem; border-right:1px solid var(--c-line); position:relative; }
.phase:last-child{ border-right:0; }
@media (max-width:820px){ .phase{ border-right:0; border-bottom:1px solid var(--c-line); } .phase:last-child{ border-bottom:0; } }
.phase-id{ font-family:var(--f-mono); font-size:var(--t-xs); letter-spacing:.14em; text-transform:uppercase; color:var(--c-green-ink); display:block; margin-bottom:.85rem; }
.phase h3{ margin-bottom:.55rem; }
.phase p{ color:var(--c-steel); font-size:var(--t-sm); margin:0; }

/* ---------- 12. Bloques comparativos ---------- */
.split{ display:grid; grid-template-columns:repeat(auto-fit,minmax(300px,1fr)); gap:1.5rem; }
.panel{ border:1px solid var(--c-line); border-radius:var(--r-lg); padding:1.9rem 1.75rem; background:#fff; }
.panel--problem{ background:var(--c-bg-alt); }
.panel--answer{ border-color:var(--c-green); box-shadow:var(--shadow-sm); }
.panel-label{ font-family:var(--f-mono); font-size:var(--t-xs); letter-spacing:.14em; text-transform:uppercase; color:var(--c-steel); display:block; margin-bottom:.9rem; }
.panel--answer .panel-label{ color:var(--c-green-ink); }
.panel p{ color:var(--c-steel); font-size:var(--t-sm); }

/* ---------- 13. Listas técnicas ---------- */
.check-list{ list-style:none; padding:0; margin:0; }
.check-list li{
  position:relative; padding-left:1.7rem; margin-bottom:.72rem;
  color:var(--c-steel); font-size:var(--t-sm); line-height:1.6;
}
.check-list li::before{
  content:""; position:absolute; left:0; top:.52em;
  width:7px; height:7px; border-radius:1px;
  background:var(--c-green); transform:rotate(45deg);
}
.check-list strong{ color:var(--c-navy); font-weight:600; }

.def-list{ margin:0; padding:0; }
.def-list div{ border-top:1px solid var(--c-line); padding-block:1.05rem; display:grid; grid-template-columns:190px 1fr; gap:1.25rem; }
.def-list div:last-child{ border-bottom:1px solid var(--c-line); }
.def-list dt{ font-family:var(--f-mono); font-size:var(--t-xs); letter-spacing:.08em; text-transform:uppercase; color:var(--c-navy); }
.def-list dd{ margin:0; color:var(--c-steel); font-size:var(--t-sm); }
@media (max-width:640px){ .def-list div{ grid-template-columns:1fr; gap:.35rem; } }

.callout{
  border-left:3px solid var(--c-green); background:var(--c-green-soft);
  padding:1.15rem 1.35rem; border-radius:0 var(--r-md) var(--r-md) 0;
  font-size:var(--t-sm); color:var(--c-navy);
}
.callout strong{ display:block; margin-bottom:.25rem; }

/* ---------- 14. Formulario ---------- */
.form-grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); gap:1.1rem; }
.field{ display:flex; flex-direction:column; gap:.42rem; }
.field--full{ grid-column:1 / -1; }
.field label{ font-size:var(--t-xs); font-weight:600; letter-spacing:.04em; text-transform:uppercase; color:var(--c-navy); font-family:var(--f-mono); }
.field input,.field select,.field textarea{
  font-family:inherit; font-size:.94rem; color:var(--c-ink);
  background:#fff; border:1px solid var(--c-line-strong); border-radius:var(--r-md);
  padding:.72rem .85rem; width:100%;
  transition:border-color .16s var(--ease), box-shadow .16s var(--ease);
}
.field textarea{ min-height:150px; resize:vertical; }
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none; border-color:var(--c-accent); box-shadow:0 0 0 3px var(--c-accent-soft);
}
.field-hint{ font-size:var(--t-xs); color:var(--c-steel-light); }
.hp{ position:absolute; left:-9999px; }

.contact-card{ background:var(--c-bg-alt); border:1px solid var(--c-line); border-radius:var(--r-lg); padding:1.9rem 1.75rem; }
.contact-card dl{ margin:0; }
.contact-row{ border-top:1px solid var(--c-line); padding-block:.95rem; }
.contact-row:first-of-type{ border-top:0; padding-top:0; }
.contact-row dt{ font-family:var(--f-mono); font-size:var(--t-xs); letter-spacing:.1em; text-transform:uppercase; color:var(--c-steel-light); margin-bottom:.28rem; }
.contact-row dd{ margin:0; font-size:.94rem; color:var(--c-navy); font-weight:500; }
.badge{
  display:inline-flex; align-items:center; gap:.45rem;
  font-family:var(--f-mono); font-size:var(--t-xs); letter-spacing:.09em; text-transform:uppercase;
  color:var(--c-green-ink); background:var(--c-green-soft); border:1px solid #d3e7c3;
  padding:.3rem .7rem; border-radius:100px; margin-bottom:1.3rem;
}
.badge i{ width:6px; height:6px; border-radius:50%; background:var(--c-green); }

/* ---------- 15. FAQ ---------- */
.faq{ border-top:1px solid var(--c-line); }
.faq details{ border-bottom:1px solid var(--c-line); }
.faq summary{
  cursor:pointer; list-style:none; padding:1.25rem 2.5rem 1.25rem 0;
  font-weight:600; color:var(--c-navy); font-size:1.02rem; position:relative;
  transition:color .16s var(--ease);
}
.faq summary::-webkit-details-marker{ display:none; }
.faq summary:hover{ color:var(--c-accent); }
.faq summary::after{
  content:""; position:absolute; right:.35rem; top:1.62rem;
  width:9px; height:9px; border-right:1.5px solid var(--c-steel); border-bottom:1.5px solid var(--c-steel);
  transform:rotate(45deg); transition:transform .2s var(--ease);
}
.faq details[open] summary::after{ transform:rotate(-135deg); }
.faq .faq-body{ padding:0 2.5rem 1.5rem 0; color:var(--c-steel); font-size:var(--t-sm); }
.faq-group{ margin-bottom:3rem; }
.faq-group > h2{ margin-bottom:1rem; }

/* ---------- 16. Blog ---------- */
.post-card{ display:flex; flex-direction:column; gap:.65rem; padding-block:2rem; border-top:1px solid var(--c-line); }
.post-card:last-child{ border-bottom:1px solid var(--c-line); }
.post-meta{ font-family:var(--f-mono); font-size:var(--t-xs); letter-spacing:.08em; text-transform:uppercase; color:var(--c-steel-light); display:flex; flex-wrap:wrap; gap:.6rem; align-items:center; }
.post-meta span{ color:var(--c-green-ink); }
.post-card h3{ font-size:1.28rem; }
.post-card h3 a{ color:var(--c-navy); }
.post-card h3 a:hover{ color:var(--c-accent); text-decoration:none; }
.post-card p{ color:var(--c-steel); font-size:var(--t-sm); max-width:72ch; margin:0; }

.article{ max-width:70ch; }
.article h2{ font-size:1.5rem; margin-top:2.6rem; margin-bottom:.85rem; }
.article h3{ font-size:1.14rem; margin-top:1.9rem; margin-bottom:.6rem; }
.article p,.article li{ color:#3d4d5e; }
.article ul,.article ol{ padding-left:1.25em; }
.article > p:first-of-type{ font-size:var(--t-lead); color:var(--c-steel); }

/* ---------- 17. CTA band ---------- */
.cta-band{ background:var(--c-navy-deep); color:#fff; position:relative; overflow:hidden; }
.cta-band::after{
  content:""; position:absolute; left:-6%; bottom:-60%; width:520px; height:520px;
  background:radial-gradient(circle, rgba(102,171,46,.24) 0%, transparent 68%); pointer-events:none;
}
.cta-band .wrap{ position:relative; z-index:1; display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:1.75rem; padding-block:clamp(2.75rem,1.8rem + 3.5vw,4.25rem); }
.cta-band h2{ color:#fff; max-width:22ch; }
.cta-band p{ color:var(--c-on-dark-dim); margin-top:.8rem; max-width:52ch; font-size:var(--t-sm); }

/* ---------- 18. Footer ---------- */
.site-footer{ background:var(--c-navy-deep); color:var(--c-on-dark-dim); border-top:1px solid rgba(255,255,255,.08); }
.footer-grid{
  display:grid; grid-template-columns:1.5fr 1fr 1fr 1fr; gap:2.5rem;
  padding-block:clamp(2.75rem,2rem + 2.5vw,4rem);
}
@media (max-width:820px){ .footer-grid{ grid-template-columns:repeat(auto-fit,minmax(180px,1fr)); gap:2rem; } }


.footer-brand p{ font-size:var(--t-sm); margin-top:1.1rem; max-width:32ch; line-height:1.6; }
.footer-col h4{
  font-family:var(--f-mono); font-size:var(--t-xs); letter-spacing:.14em;
  text-transform:uppercase; color:#fff; margin-bottom:1.05rem; font-weight:500;
}
.footer-col ul{ list-style:none; padding:0; margin:0; }
.footer-col li{ margin-bottom:.62rem; font-size:var(--t-sm); }
.footer-col a{ color:var(--c-on-dark-dim); }
.footer-col a:hover{ color:#fff; }
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);
  padding-block:1.35rem;
  display:flex; flex-wrap:wrap; gap:.9rem; justify-content:space-between; align-items:center;
  font-family:var(--f-mono); font-size:var(--t-xs); letter-spacing:.05em; color:#8b93ad;
}

/* ---------- 19. Utilidades ---------- */
.mt-0{ margin-top:0; } .mt-1{ margin-top:1rem; } .mt-2{ margin-top:2rem; } .mt-3{ margin-top:3rem; }
.mb-2{ margin-bottom:2rem; }
.text-center{ text-align:center; }
.divider{ height:1px; background:var(--c-line); border:0; margin-block:3rem; }
@media print{
  .site-header,.cta-band,.nav-toggle{ display:none !important; }
  body{ color:#000; }
}

/* ==========================================================================
   20. Asistente de WhatsApp
   ========================================================================== */
.wa{ position:fixed; right:clamp(1rem,2.5vw,1.75rem); bottom:clamp(1rem,2.5vw,1.75rem); z-index:150; }

/* --- Botón flotante --- */
.wa-launcher{
  position:relative; display:grid; place-items:center;
  width:58px; height:58px; border-radius:50%;
  background:var(--c-navy); color:#fff; border:0; cursor:pointer; padding:0;
  box-shadow:0 10px 28px -8px rgba(12,17,40,.55);
  transition:transform .2s var(--ease), background .2s var(--ease);
  text-decoration:none !important;
}
.wa-launcher:hover{ transform:translateY(-2px) scale(1.04); background:var(--c-navy-mid); color:#fff; }
.wa-launcher svg{ width:29px; height:29px; fill:currentColor; }
.wa-launcher .wa-dot{
  position:absolute; top:3px; right:3px; width:13px; height:13px; border-radius:50%;
  background:var(--c-green); border:2.5px solid var(--c-navy);
}
.wa-launcher .wa-dot::after{
  content:""; position:absolute; inset:-2px; border-radius:50%;
  border:2px solid var(--c-green); opacity:0; animation:wa-pulse 2.6s var(--ease) infinite;
}
@keyframes wa-pulse{ 0%{ transform:scale(.8); opacity:.9 } 70%,100%{ transform:scale(2.1); opacity:0 } }
.wa[data-open="true"] .wa-launcher .wa-dot::after{ animation:none; }

/* Icono X cuando el panel está abierto */
.wa-launcher .wa-ico-close{ display:none; }
.wa[data-open="true"] .wa-launcher .wa-ico-wa{ display:none; }
.wa[data-open="true"] .wa-launcher .wa-ico-close{ display:block; }

/* --- Globo de invitación --- */
.wa-teaser{
  position:absolute; right:72px; bottom:9px; width:max-content; max-width:230px;
  background:#fff; color:var(--c-navy); border:1px solid var(--c-line);
  border-radius:var(--r-lg) var(--r-lg) 2px var(--r-lg);
  padding:.7rem .9rem; font-size:var(--t-sm); line-height:1.45;
  box-shadow:var(--shadow-md); opacity:0; transform:translateY(6px);
  transition:opacity .3s var(--ease), transform .3s var(--ease); pointer-events:none;
}
.wa-teaser[data-show="true"]{ opacity:1; transform:none; pointer-events:auto; }
.wa-teaser button{
  position:absolute; top:-8px; right:-8px; width:22px; height:22px; border-radius:50%;
  background:var(--c-navy); color:#fff; border:0; cursor:pointer; font-size:.72rem; line-height:1;
  display:grid; place-items:center;
}

/* --- Panel --- */
.wa-panel{
  position:absolute; right:0; bottom:72px;
  width:min(358px, calc(100vw - 2rem)); max-height:min(560px, calc(100vh - 8rem));
  display:none; flex-direction:column; overflow:hidden;
  background:var(--c-bg); border:1px solid var(--c-line); border-radius:var(--r-lg);
  box-shadow:var(--shadow-lg);
}
.wa[data-open="true"] .wa-panel{ display:flex; animation:wa-in .22s var(--ease); }
@keyframes wa-in{ from{ opacity:0; transform:translateY(10px) } to{ opacity:1; transform:none } }

.wa-head{
  display:flex; align-items:center; gap:.7rem;
  background:var(--c-navy-deep); color:#fff; padding:.9rem 1rem;
}
.wa-head img{ width:34px; height:auto; flex:0 0 auto; }
.wa-head-txt{ display:flex; flex-direction:column; line-height:1.25; min-width:0; }
.wa-head-name{ font-size:.9rem; font-weight:600; }
.wa-head-status{
  font-family:var(--f-mono); font-size:.63rem; letter-spacing:.09em; text-transform:uppercase;
  color:var(--c-green); display:flex; align-items:center; gap:.35rem; margin-top:.15rem;
}
.wa-head-status i{ width:6px; height:6px; border-radius:50%; background:var(--c-green); }
.wa-head-close{
  margin-left:auto; background:transparent; border:0; color:#fff; cursor:pointer;
  width:30px; height:30px; border-radius:var(--r-sm); font-size:1.1rem; line-height:1;
  display:grid; place-items:center; opacity:.75;
}
.wa-head-close:hover{ opacity:1; background:rgba(255,255,255,.12); }

.wa-body{
  flex:1 1 auto; overflow-y:auto; padding:1.1rem 1rem 1.2rem;
  background:var(--c-bg-alt); display:flex; flex-direction:column; gap:.7rem;
}
.wa-msg{
  align-self:flex-start; max-width:86%;
  background:#fff; border:1px solid var(--c-line); color:var(--c-ink);
  border-radius:var(--r-lg) var(--r-lg) var(--r-lg) 2px;
  padding:.68rem .85rem; font-size:.875rem; line-height:1.55;
  animation:wa-in .22s var(--ease);
}
.wa-msg--user{
  align-self:flex-end; background:var(--c-navy); color:#fff; border-color:var(--c-navy);
  border-radius:var(--r-lg) var(--r-lg) 2px var(--r-lg);
}
.wa-msg strong{ color:inherit; }
.wa-msg--user strong{ color:#fff; }

.wa-typing{ display:flex; gap:4px; align-items:center; padding:.2rem 0; }
.wa-typing i{ width:6px; height:6px; border-radius:50%; background:var(--c-steel-light);
  animation:wa-bounce 1.2s var(--ease) infinite; }
.wa-typing i:nth-child(2){ animation-delay:.16s } .wa-typing i:nth-child(3){ animation-delay:.32s }
@keyframes wa-bounce{ 0%,60%,100%{ transform:translateY(0); opacity:.45 } 30%{ transform:translateY(-4px); opacity:1 } }

.wa-opts{ display:flex; flex-direction:column; gap:.45rem; margin-top:.15rem; animation:wa-in .22s var(--ease); }
.wa-opt{
  text-align:left; background:#fff; color:var(--c-navy);
  border:1px solid var(--c-line-strong); border-radius:var(--r-md);
  padding:.6rem .8rem; font-family:inherit; font-size:.85rem; font-weight:500; cursor:pointer;
  transition:border-color .16s var(--ease), background .16s var(--ease), color .16s var(--ease);
}
.wa-opt:hover{ border-color:var(--c-accent); background:var(--c-accent-soft); color:var(--c-accent-dark); }

.wa-go{
  display:flex; align-items:center; justify-content:center; gap:.5rem;
  background:var(--c-green); color:var(--c-navy); font-weight:600; font-size:.9rem;
  border:0; border-radius:var(--r-md); padding:.8rem 1rem; cursor:pointer;
  text-decoration:none !important; transition:background .18s var(--ease);
}
.wa-go:hover{ background:#5c9c29; color:var(--c-navy); }
.wa-go svg{ width:18px; height:18px; fill:currentColor; }
.wa-alt{
  display:block; text-align:center; font-size:var(--t-xs); color:var(--c-steel);
  margin-top:.2rem; background:none; border:0; cursor:pointer; font-family:inherit;
  width:100%; padding:.35rem;
}
.wa-alt:hover{ color:var(--c-accent); text-decoration:underline; }

.wa-foot{
  border-top:1px solid var(--c-line); background:#fff;
  padding:.6rem .9rem; font-family:var(--f-mono); font-size:.63rem;
  letter-spacing:.06em; color:var(--c-steel-light); text-align:center;
}

@media (max-width:480px){
  .wa-panel{ bottom:70px; width:calc(100vw - 2rem); max-height:calc(100vh - 7rem); }
  .wa-teaser{ display:none; }
}
@media print{ .wa{ display:none !important; } }