/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  /* Brand — authority */
  --azul-profundo: #01688F;
  --verde-bosque:  #1B8C73;
  /* Brand — accent / CTA */
  --azul-cristal:  #3894CE;
  --verde-esmeralda: #1FD487;
  /* Neutrals */
  --gris-cuerpo:   #3A4750;
  --bg-tint:       #F4F7F8;

  --bg:        #08161c;   /* deep navy-tinted near-black */
  --bg-2:      #0d1f27;
  --bg-3:      #12293338; /* translucent card on dark */
  --bg-card:   #14313c;
  --cream:     #F4F7F8;
  --cream-2:   #cfdde1;
  --cream-3:   #7f9aa3;
  --ink:       #0b2530;
  --ink-soft:  var(--gris-cuerpo);
  --ink-mute:  #6b7c83;
  --line:      rgba(244,247,248,0.12);
  --line-dark: rgba(11,37,48,0.12);

  --accent:    var(--azul-cristal);
  --accent-2:  var(--verde-esmeralda);
  --auth-1:    var(--azul-profundo);
  --auth-2:    var(--verde-bosque);

  --font-display: "Poppins", sans-serif;
  --font-body: "Lato", sans-serif;

  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:   cubic-bezier(0.7, 0, 0.84, 0);
  --ease-soft: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);

  --container: 1240px;
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html {
  -webkit-text-size-adjust: 100%;
  tab-size: 2;
  overflow-x: clip;
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--gris-cuerpo);
  background: var(--bg-tint);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  overscroll-behavior-y: none;
}
img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.08; font-family: var(--font-display); font-weight: 700; }
ul { list-style: none; padding: 0; }
::selection { background: var(--accent-2); color: var(--ink); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.container { max-width: var(--container); margin-inline: auto; padding-inline: 1.4rem; }
@media (min-width: 720px) { .container { padding-inline: 2.2rem; } }

.skip-link {
  position: fixed; top: -100px; left: 1rem;
  padding: .6rem 1rem; background: var(--cream); color: var(--ink);
  z-index: 9999; border-radius: 8px; font-weight: 700;
}
.skip-link:focus { top: 1rem; }

/* =============================================================
   3. Utilities
   ============================================================= */
.eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--auth-1);
  margin-bottom: 0.9rem;
}
.eyebrow-light { color: var(--accent-2); }

.section-head { max-width: 640px; margin-bottom: 3.4rem; }
.section-head-light { max-width: 680px; }

.section-title {
  font-size: clamp(1.9rem, 3.4vw, 2.9rem);
  color: var(--ink);
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}
.section-title-light { color: var(--cream); }

.section-sub {
  font-size: clamp(1rem, 1.2vw, 1.15rem);
  color: var(--ink-mute);
  max-width: 58ch;
  line-height: 1.7;
}
.section-sub-light { color: var(--cream-3); }

.reveal { opacity: 0; transform: translateY(32px); transition: opacity .9s var(--ease-out), transform .9s var(--ease-out); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-split] { opacity: 1; transform: none; }

/* =============================================================
   4. Buttons
   ============================================================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6rem;
  padding: 0.95rem 1.9rem;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  letter-spacing: 0.01em;
  transition: transform .35s var(--ease-out), box-shadow .35s var(--ease-out), background .35s var(--ease-out), color .35s var(--ease-out);
  white-space: nowrap;
}
.btn-lg { padding: 1.05rem 2.3rem; }
.btn-block { width: 100%; }

.btn-accent {
  background: linear-gradient(135deg, var(--azul-cristal), var(--verde-esmeralda));
  color: #06222c;
  box-shadow: 0 12px 30px -10px rgba(31,212,135,0.45);
}
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 18px 40px -12px rgba(31,212,135,0.55); }

.btn-primary {
  background: var(--verde-esmeralda);
  color: #06222c;
  box-shadow: 0 10px 26px -10px rgba(31,212,135,0.5);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 36px -10px rgba(31,212,135,0.6); }

.btn-ghost-light {
  border: 1.5px solid rgba(244,247,248,0.35);
  color: var(--cream);
}
.btn-ghost-light:hover { border-color: var(--accent-2); color: var(--accent-2); transform: translateY(-2px); }

/* =============================================================
   5. Splash
   ============================================================= */
.splash {
  position: fixed; inset: 0; z-index: 9998;
  display: grid; place-items: center;
  background: var(--bg);
  animation: splashSafety .01s 4.5s forwards;
}
.splash.is-out { opacity: 0; pointer-events: none; transition: opacity .6s var(--ease-out); }
.splash-mark { width: 64px; height: 64px; animation: splashPulse 1.4s var(--ease-soft) infinite; }
@keyframes splashPulse { 0%,100% { transform: scale(1); opacity: .85; } 50% { transform: scale(1.12); opacity: 1; } }
@keyframes splashSafety { to { opacity: 0; pointer-events: none; } }

/* =============================================================
   6. Nav
   ============================================================= */
.nav {
  position: fixed; inset-inline: 0; top: 0; z-index: 500;
  padding-block: 1.1rem;
  transition: background .4s var(--ease-out), padding .4s var(--ease-out), box-shadow .4s var(--ease-out);
}
.nav.is-scrolled {
  background: rgba(8,22,28,0.85);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  padding-block: 0.7rem;
  box-shadow: 0 12px 30px -18px rgba(0,0,0,0.5);
}
.nav-inner { display: flex; align-items: center; gap: 1.6rem; }
.nav-brand { display: flex; align-items: center; gap: 0.7rem; margin-right: auto; }
.nav-symbol { border-radius: 8px; }
.nav-brand-text {
  font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; color: var(--cream);
  display: flex; flex-direction: column; line-height: 1.1;
}
.nav-brand-sub { font-family: var(--font-body); font-weight: 400; font-size: 0.62rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent-2); }

.nav-links { display: none; gap: 2rem; }
.nav-links a {
  font-family: var(--font-display); font-weight: 600; font-size: 0.92rem; color: var(--cream-2);
  position: relative; padding-block: 0.3rem;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 2px;
  background: var(--accent-2); transition: right .35s var(--ease-out);
}
.nav-links a:hover { color: var(--cream); }
.nav-links a:hover::after { right: 0; }

.nav-cta { display: none; }
.nav-burger {
  display: flex; flex-direction: column; gap: 5px; padding: 0.6rem;
}
.nav-burger span { width: 22px; height: 2px; background: var(--cream); border-radius: 2px; transition: transform .3s var(--ease-out), opacity .3s var(--ease-out); }

/* Mobile dropdown menu */
.nav.is-menu-open .nav-links {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: absolute;
  top: 100%; left: 0; right: 0;
  background: rgba(8,22,28,0.98);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-top: 1px solid var(--line);
  box-shadow: 0 24px 40px -20px rgba(0,0,0,0.55);
  padding: 0.4rem 1.4rem 1.2rem;
}
.nav.is-menu-open .nav-links a {
  padding-block: 0.9rem;
  border-bottom: 1px solid var(--line);
}
.nav.is-menu-open .nav-burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.is-menu-open .nav-burger span:nth-child(2) { opacity: 0; }
.nav.is-menu-open .nav-burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (min-width: 960px) {
  .nav-links { display: flex; }
  .nav-cta { display: inline-flex; }
  .nav-burger { display: none; }
}

/* =============================================================
   7. Hero
   ============================================================= */
.hero {
  position: relative;
  min-height: 100vh; min-height: 100svh;
  display: flex; align-items: center;
  padding-block: 9rem 4rem;
  background: var(--bg);
  overflow: clip;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg picture { display: block; width: 100%; height: 100%; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.55; }
.hero-bg-tint {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(8,22,28,0.55) 0%, rgba(8,22,28,0.75) 55%, var(--bg) 100%),
    linear-gradient(115deg, rgba(1,104,143,0.5) 0%, transparent 55%);
}
.hero-mesh {
  position: absolute; inset: -10%; z-index: 1;
  background:
    radial-gradient(circle at 18% 20%, rgba(56,148,206,0.35), transparent 55%),
    radial-gradient(circle at 82% 75%, rgba(31,212,135,0.28), transparent 55%);
  filter: blur(70px);
  animation: meshDrift 22s ease-in-out infinite;
}
@keyframes meshDrift {
  0%, 100% { transform: scale(1) rotate(0deg); }
  50% { transform: scale(1.15) rotate(8deg); }
}
.hero-grain {
  position: absolute; inset: 0; z-index: 1; opacity: 0.05; mix-blend-mode: overlay; pointer-events: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

.hero-inner { position: relative; z-index: 2; text-align: center; margin-inline: auto; }
.hero-kicker {
  font-family: var(--font-display); font-weight: 600; font-size: 0.85rem; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--accent-2); margin-bottom: 1.6rem;
}
.hero-title {
  font-size: clamp(2.3rem, 5.6vw, 4.4rem);
  color: var(--cream);
  max-width: 20ch;
  margin-inline: auto;
  line-height: 1.12;
}
.hero-title em { font-style: normal; color: var(--accent-2); display: inline; }
.hero-sub {
  font-size: clamp(1.05rem, 1.4vw, 1.28rem);
  color: var(--cream-2);
  max-width: 52ch;
  margin: 1.6rem auto 0;
  line-height: 1.6;
}
.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; margin-top: 2.4rem; }

.hero-stats {
  display: flex; align-items: center; justify-content: center; gap: 1.6rem;
  margin-top: 4.2rem; flex-wrap: wrap;
}
.hero-stat { display: flex; flex-direction: column; align-items: center; gap: 0.4rem; min-width: 130px; }
.hero-stat-value { font-family: var(--font-display); font-weight: 800; font-size: 2rem; color: var(--cream); }
.hero-stat-label {
  font-family: var(--font-display); font-weight: 600; font-size: 0.7rem;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--cream-3); line-height: 1.5;
}
.hero-stat-divider { width: 1px; height: 42px; background: var(--line); }
@media (max-width: 719px) { .hero-stat-divider { display: none; } }

.hero-scroll {
  position: absolute; bottom: 2.2rem; left: 50%; transform: translateX(-50%); z-index: 2;
  width: 26px; height: 42px; border: 1.5px solid rgba(244,247,248,0.4); border-radius: 999px;
  display: flex; justify-content: center; padding-top: 8px;
}
.hero-scroll span { width: 4px; height: 8px; background: var(--accent-2); border-radius: 999px; animation: scrollDot 1.8s var(--ease-soft) infinite; }
@keyframes scrollDot { 0% { opacity: 1; transform: translateY(0); } 70%,100% { opacity: 0; transform: translateY(14px); } }

/* =============================================================
   8. Pillars
   ============================================================= */
.pillars { background: var(--bg-tint); padding-block: 7rem; }
.pillars-grid {
  display: grid; gap: 1.6rem;
  grid-template-columns: 1fr;
}
.pillar-card {
  background: #fff;
  border-radius: 22px;
  padding: 2.6rem 2.2rem;
  box-shadow: 0 30px 60px -40px rgba(11,37,48,0.35);
  border: 1px solid var(--line-dark);
  transition: transform .5s var(--ease-out), box-shadow .5s var(--ease-out);
}
.pillar-card:hover { transform: translateY(-6px); box-shadow: 0 40px 70px -35px rgba(11,37,48,0.4); }

.pillar-internal { border-top: 4px solid var(--auth-1); }
.pillar-external { border-top: 4px solid var(--auth-2); }

.pillar-tag {
  display: inline-block; font-family: var(--font-display); font-weight: 700; font-size: 0.72rem;
  letter-spacing: 0.14em; text-transform: uppercase; padding: 0.4rem 0.9rem; border-radius: 999px;
  margin-bottom: 1.2rem;
}
.pillar-internal .pillar-tag { background: rgba(1,104,143,0.1); color: var(--auth-1); }
.pillar-external .pillar-tag { background: rgba(27,140,115,0.1); color: var(--auth-2); }

.pillar-title { font-size: 1.5rem; color: var(--ink); margin-bottom: 0.9rem; }
.pillar-desc { color: var(--ink-mute); margin-bottom: 1.8rem; line-height: 1.7; }

.pillar-list { display: flex; flex-direction: column; gap: 1.1rem; }
.pillar-list li { padding-left: 1.3rem; position: relative; }
.pillar-list li::before {
  content: ""; position: absolute; left: 0; top: 0.5em; width: 7px; height: 7px; border-radius: 999px;
}
.pillar-internal .pillar-list li::before { background: var(--auth-1); }
.pillar-external .pillar-list li::before { background: var(--auth-2); }
.pillar-list strong { display: block; font-family: var(--font-display); font-weight: 700; color: var(--ink); font-size: 0.98rem; margin-bottom: 0.2rem; }
.pillar-list span { color: var(--ink-mute); font-size: 0.92rem; line-height: 1.55; }

.pillar-bridge { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 1rem; padding: 1.2rem 0.4rem; }
.pillar-bridge-line { display: none; }
.pillar-bridge-node {
  width: 64px; height: 64px; border-radius: 999px;
  background: linear-gradient(135deg, var(--auth-1), var(--auth-2));
  display: grid; place-items: center;
  box-shadow: 0 16px 34px -14px rgba(1,104,143,0.5);
  animation: bridgeFloat 4s var(--ease-soft) infinite;
}
.pillar-bridge-node img { filter: brightness(0) invert(1); }
@keyframes bridgeFloat { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
.pillar-bridge-text { font-size: 0.92rem; color: var(--ink-mute); max-width: 34ch; font-style: italic; line-height: 1.6; }

@media (min-width: 960px) {
  .pillars-grid { grid-template-columns: 1fr auto 1fr; align-items: start; gap: 2.2rem; }
  .pillar-internal { grid-column: 1; }
  .pillar-bridge { grid-column: 2; width: 220px; padding-top: 5.5rem; }
  .pillar-external { grid-column: 3; }
  .pillar-bridge-line {
    display: block; width: 2px; height: 60px;
    background: linear-gradient(180deg, var(--auth-1), var(--auth-2));
  }
}

/* =============================================================
   9. Testimonials
   ============================================================= */
.testimonials { position: relative; background: var(--bg); padding-block: 7rem; overflow: clip; }
.testimonials-halo {
  position: absolute; inset: -20% -10% -30% -10%;
  background: radial-gradient(50% 40% at 50% 20%, rgba(56,148,206,0.22), transparent 70%);
  filter: blur(100px); pointer-events: none;
}

.testi-track {
  position: relative; z-index: 1;
  display: flex; gap: 1.6rem; overflow-x: auto; overflow-y: visible;
  scroll-snap-type: x mandatory;
  padding-block: 0.6rem 2.4rem;
  scrollbar-width: none;
}
.testi-track::-webkit-scrollbar { display: none; }

.testi-card {
  scroll-snap-align: start;
  flex: 0 0 min(420px, 88vw);
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 2.2rem;
  display: flex; flex-direction: column; gap: 1.3rem;
}
.testi-quote-mark { font-family: var(--font-display); font-size: 2.6rem; color: var(--accent-2); line-height: 1; }
.testi-quote { color: var(--cream-2); font-size: 1.02rem; line-height: 1.65; font-style: italic; }

.testi-shift { display: flex; flex-direction: column; gap: 0.8rem; }
.testi-shift-row { display: flex; gap: 0.7rem; align-items: flex-start; font-size: 0.88rem; color: var(--cream-3); line-height: 1.5; }
.testi-shift-tag {
  flex-shrink: 0; font-family: var(--font-display); font-weight: 700; font-size: 0.66rem; letter-spacing: 0.08em;
  text-transform: uppercase; padding: 0.25rem 0.6rem; border-radius: 999px; margin-top: 0.1rem;
}
.testi-shift-row.is-before .testi-shift-tag { background: rgba(56,148,206,0.16); color: var(--azul-cristal); }
.testi-shift-row.is-after .testi-shift-tag { background: rgba(31,212,135,0.16); color: var(--accent-2); }

.testi-person { display: flex; align-items: center; gap: 0.8rem; margin-top: auto; padding-top: 0.6rem; border-top: 1px solid var(--line); }
.testi-avatar {
  width: 42px; height: 42px; border-radius: 999px;
  background: linear-gradient(135deg, var(--azul-cristal), var(--verde-esmeralda));
  display: grid; place-items: center; font-family: var(--font-display); font-weight: 700; color: #06222c; font-size: 0.95rem;
}
.testi-person-name { font-family: var(--font-display); font-weight: 700; color: var(--cream); font-size: 0.92rem; }
.testi-person-role { font-size: 0.78rem; color: var(--cream-3); }

.testi-dots { display: flex; justify-content: center; gap: 0.55rem; position: relative; z-index: 1; }
.testi-dot { width: 8px; height: 8px; border-radius: 999px; background: var(--line); transition: background .3s var(--ease-out), transform .3s var(--ease-out); }
.testi-dot.is-active { background: var(--accent-2); transform: scale(1.3); }

/* =============================================================
   10. Network
   ============================================================= */
.network { background: var(--bg-tint); padding-block: 7rem; }
.network-grid { display: grid; gap: 3rem; align-items: center; }
.network-list { display: flex; flex-direction: column; gap: 1rem; margin: 1.8rem 0 2.2rem; }
.network-list li { padding-left: 2rem; position: relative; color: var(--ink-soft); line-height: 1.6; }
.network-list li::before {
  content: "✓"; position: absolute; left: 0; top: 0; width: 22px; height: 22px; border-radius: 999px;
  background: var(--auth-2); color: #fff; font-size: 0.68rem; font-weight: 700; display: grid; place-items: center;
}

.network-visual { position: relative; }
.network-visual-frame {
  border-radius: 24px; overflow: clip; aspect-ratio: 4/5;
  background: linear-gradient(135deg, var(--auth-1), var(--auth-2));
  box-shadow: 0 40px 70px -35px rgba(11,37,48,0.4);
}
.network-visual-frame img { width: 100%; height: 100%; object-fit: cover; }
.network-visual-badge {
  position: absolute; bottom: -1.2rem; left: 1.5rem; right: 1.5rem;
  background: #fff; border-radius: 16px; padding: 1rem 1.2rem;
  display: flex; align-items: center; gap: 0.8rem;
  box-shadow: 0 20px 40px -20px rgba(11,37,48,0.35);
  font-family: var(--font-display); font-weight: 700; font-size: 0.88rem; color: var(--ink);
}

@media (min-width: 960px) { .network-grid { grid-template-columns: 1.05fr 0.95fr; } }

/* =============================================================
   11. Contact
   ============================================================= */
.contact { position: relative; background: var(--bg); padding-block: 7rem 6rem; overflow: clip; }
.contact-mesh {
  position: absolute; inset: -10%;
  background:
    radial-gradient(circle at 85% 15%, rgba(31,212,135,0.24), transparent 55%),
    radial-gradient(circle at 10% 85%, rgba(56,148,206,0.24), transparent 55%);
  filter: blur(90px); pointer-events: none;
}
.contact-grid { position: relative; z-index: 1; display: grid; gap: 3rem; }
.contact-info { display: flex; flex-direction: column; gap: 1rem; margin: 2rem 0 2.2rem; }
.contact-info-item {
  display: flex; flex-direction: column; gap: 0.15rem; padding: 1rem 1.2rem;
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 14px;
  transition: border-color .3s var(--ease-out), transform .3s var(--ease-out);
}
.contact-info-item:hover { border-color: var(--accent-2); transform: translateX(4px); }
.contact-info-label { font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--cream-3); }
.contact-info-value { font-family: var(--font-display); font-weight: 600; color: var(--cream); }

.logo-card {
  display: inline-flex; padding: 1rem 1.3rem; background: #fff; border-radius: 16px; width: fit-content;
}
.logo-card-img { width: 140px; height: auto; }

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 2.2rem;
  display: flex; flex-direction: column; gap: 1.3rem;
}
.field { display: flex; flex-direction: column; gap: 0.5rem; }
.field label { font-size: 0.85rem; color: var(--cream-2); font-weight: 600; }
.field input, .field textarea {
  font-family: var(--font-body); font-size: 0.98rem; color: var(--cream);
  background: rgba(244,247,248,0.06); border: 1px solid var(--line); border-radius: 10px;
  padding: 0.85rem 1rem; resize: vertical; transition: border-color .3s var(--ease-out), background .3s var(--ease-out);
}
.field input:focus, .field textarea:focus { border-color: var(--accent-2); background: rgba(244,247,248,0.1); outline: none; }
.field input::placeholder, .field textarea::placeholder { color: var(--cream-3); }

.btn-check { display: none; }
.contact-form.is-sent .btn-label { display: none; }
.contact-form.is-sent .btn-check { display: inline-flex; }
.form-note { font-size: 0.78rem; color: var(--cream-3); text-align: center; }

@media (min-width: 960px) { .contact-grid { grid-template-columns: 1fr 1fr; align-items: start; } }

/* =============================================================
   12. Footer
   ============================================================= */
.footer { background: #061117; padding-block: 3.4rem; }
.footer-inner { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 1rem; }
.footer-brand { display: flex; align-items: center; gap: 0.6rem; font-family: var(--font-display); font-weight: 700; color: var(--cream); }
.footer-brand em { font-style: normal; color: var(--accent-2); font-weight: 500; margin-left: 0.2rem; }
.footer-note { font-size: 0.85rem; color: var(--cream-3); max-width: 46ch; }
.footer-copy { font-size: 0.78rem; color: var(--cream-3); opacity: 0.7; }

/* =============================================================
   13. Responsive
   ============================================================= */
@media (min-width: 540px) {
  .btn-block { width: auto; }
}
@media (min-width: 720px) {
  .hero { padding-block: 10rem 5rem; }
}
@media (min-width: 960px) {
  .pillars { padding-block: 8.5rem; }
  .testimonials { padding-block: 8.5rem; }
  .network { padding-block: 8.5rem; }
  .contact { padding-block: 8.5rem 7rem; }
}
@media (min-width: 1280px) {
  .hero-title { max-width: 22ch; }
}

/* =============================================================
   14. Chat widget (asistente de soporte)
   ============================================================= */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.chat-widget { position: fixed; right: 1.2rem; bottom: 1.2rem; z-index: 700; }

.chat-toggle {
  position: relative;
  width: 58px; height: 58px; border-radius: 999px;
  background: linear-gradient(135deg, var(--azul-cristal), var(--verde-esmeralda));
  color: #06222c;
  display: grid; place-items: center;
  box-shadow: 0 16px 34px -14px rgba(31,212,135,0.55);
  transition: transform .35s var(--ease-out), box-shadow .35s var(--ease-out);
}
.chat-toggle:hover { transform: translateY(-3px) scale(1.04); box-shadow: 0 20px 40px -14px rgba(31,212,135,0.65); }
.chat-toggle-icon-close { display: none; }
.chat-widget.is-open .chat-toggle-icon-open { display: none; }
.chat-widget.is-open .chat-toggle-icon-close { display: block; }

.chat-panel {
  position: absolute; right: 0; bottom: calc(100% + 0.9rem);
  width: min(360px, calc(100vw - 2.4rem));
  height: min(500px, calc(100vh - 8rem));
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: 0 30px 60px -20px rgba(0,0,0,0.5);
  display: flex; flex-direction: column;
  opacity: 0; transform: translateY(16px) scale(0.98); pointer-events: none;
  transform-origin: bottom right;
  transition: opacity .3s var(--ease-out), transform .3s var(--ease-out);
}
.chat-widget.is-open .chat-panel { opacity: 1; transform: none; pointer-events: auto; }

.chat-panel-head {
  display: flex; align-items: center; gap: 0.7rem;
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--line);
}
.chat-panel-title { font-family: var(--font-display); font-weight: 700; color: var(--cream); font-size: 0.94rem; }
.chat-panel-sub { font-size: 0.74rem; color: var(--cream-3); }

.chat-messages {
  flex: 1; overflow-y: auto; overflow-x: clip;
  padding: 1rem 1.1rem;
  display: flex; flex-direction: column; gap: 0.7rem;
}
.chat-msg {
  max-width: 88%;
  padding: 0.65rem 0.9rem;
  border-radius: 14px;
  font-size: 0.88rem;
  line-height: 1.5;
}
.chat-msg-bot {
  align-self: flex-start;
  background: rgba(244,247,248,0.08);
  color: var(--cream-2);
  border-bottom-left-radius: 4px;
}
.chat-msg-user {
  align-self: flex-end;
  background: linear-gradient(135deg, var(--azul-cristal), var(--verde-esmeralda));
  color: #06222c;
  font-weight: 600;
  border-bottom-right-radius: 4px;
}
.chat-msg-error {
  align-self: flex-start;
  background: rgba(200,60,60,0.14);
  color: #ffb4b4;
  border-bottom-left-radius: 4px;
}

.chat-typing { padding: 0 1.2rem 0.4rem; font-size: 0.78rem; color: var(--cream-3); font-style: italic; }

.chat-form {
  display: flex; gap: 0.6rem;
  padding: 0.9rem;
  border-top: 1px solid var(--line);
}
.chat-input {
  flex: 1; min-width: 0;
  font-family: var(--font-body); font-size: 0.9rem; color: var(--cream);
  background: rgba(244,247,248,0.06); border: 1px solid var(--line); border-radius: 999px;
  padding: 0.7rem 1.1rem;
  transition: border-color .3s var(--ease-out);
}
.chat-input:focus { border-color: var(--accent-2); outline: none; }
.chat-input::placeholder { color: var(--cream-3); }
.chat-send {
  flex-shrink: 0; width: 42px; height: 42px; border-radius: 999px;
  background: linear-gradient(135deg, var(--azul-cristal), var(--verde-esmeralda));
  color: #06222c;
  display: grid; place-items: center;
  transition: transform .3s var(--ease-out);
}
.chat-send:hover { transform: scale(1.06); }
.chat-send:disabled { opacity: 0.5; pointer-events: none; }

@media (max-width: 539px) {
  .chat-widget { right: 0.8rem; bottom: 0.8rem; }
  .chat-panel { right: -0.2rem; }
}

/* =============================================================
   15. Reduced-motion (only intrusive)
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-scroll span { animation: none; }
  .pillar-bridge-node { animation: none; }
  .hero-mesh { animation: none; }
}