/* ============================================================
   QUIÉNES SOMOS — Chapter Divider + Pilares + Valores Marquee
   Sobre PULSO · Capítulo 02
   ============================================================ */

.qs-section {
  position: relative;
  background: linear-gradient(180deg, #07090f 0%, #080c1a 60%, #07090f 100%);
  padding: 40px 0 140px;
  overflow: hidden;
}
.qs-section::before {
  content: '';
  position: absolute;
  top: 30%; left: 50%;
  transform: translateX(-50%);
  width: 900px; height: 600px;
  background: radial-gradient(ellipse, rgba(37,99,235,0.12), transparent 60%);
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
}
.qs-section > * { position: relative; z-index: 1; }

/* ============================================================
   Chapter Divider — transición arquitectónica de capítulo
   Animaciones gateadas en .qs-in-view (añadida por JS al
   entrar en viewport). Hasta entonces, elementos en frame 0.
   ============================================================ */
.qs-section:not(.qs-in-view) .ch-line  { transform: scaleX(0) !important; animation: none !important; }
.qs-section:not(.qs-in-view) .ch-meta  { opacity: 0 !important; transform: translateY(8px) !important; animation: none !important; }
.qs-section:not(.qs-in-view) .ch-word  { opacity: 0 !important; transform: translateY(40px) !important; animation: none !important; }
.qs-section:not(.qs-in-view) .qs-intro { opacity: 0 !important; transform: translateY(30px) !important; animation: none !important; }
.qs-section:not(.qs-in-view) .qs-pilar { opacity: 0 !important; transform: translateY(30px) !important; animation: none !important; }
.qs-section:not(.qs-in-view) .qs-sticky { opacity: 0 !important; transform: translateY(20px) !important; animation: none !important; }

.ch-divider {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  padding: 80px 60px 48px;
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.ch-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.18), transparent);
  transform: scaleX(0);
  transform-origin: center;
  animation: ch-line-grow 1.2s cubic-bezier(0.16,1,0.3,1) 0.1s forwards;
}
.ch-line-l { transform-origin: right; }
.ch-line-r { transform-origin: left; }
@keyframes ch-line-grow { to { transform: scaleX(1); } }

.ch-meta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ld-fg-3);
  opacity: 0;
  transform: translateY(8px);
  animation: ch-fade-up 0.8s 0.7s cubic-bezier(0.16,1,0.3,1) forwards;
}
@keyframes ch-fade-up { to { opacity: 1; transform: translateY(0); } }
.ch-chapter { color: #2563eb; }
.ch-subtitle { color: var(--ld-fg-2); }
.ch-dot {
  width: 4px; height: 4px;
  border-radius: 50%;
  background: #2563eb;
  box-shadow: 0 0 8px #2563eb;
}

.ch-title {
  grid-column: 1 / -1;
  margin-top: 32px;
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--ld-fg-1);
}
.ch-word {
  display: inline-block;
  opacity: 0;
  transform: translateY(40px);
  animation: ch-word-up 0.7s cubic-bezier(0.16,1,0.3,1) forwards;
  animation-delay: calc(0.9s + var(--i) * 0.08s);
}
@keyframes ch-word-up { to { opacity: 1; transform: translateY(0); } }

/* Lead intro */
.qs-intro {
  max-width: 900px;
  margin: 40px auto 80px;
  padding: 0 60px;
  text-align: center;
  opacity: 0;
  transform: translateY(30px);
  animation: qs-up 0.9s 0.4s cubic-bezier(0.16,1,0.3,1) forwards;
}
.qs-lead {
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--ld-fg-1);
  margin: 0;
}
.qs-lead-accent { color: #2563eb; }

/* Pilares — 3 columnas con stagger */
.qs-pilares {
  max-width: 1100px;
  margin: 0 auto 100px;
  padding: 0 60px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.qs-pilar {
  position: relative;
  padding: 32px 28px;
  border-left: 1px solid rgba(255,255,255,0.08);
  display: flex;
  flex-direction: column;
  gap: 12px;
  opacity: 0;
  transform: translateY(30px);
  animation: qs-up 0.8s calc(0.2s + var(--i) * 0.15s) cubic-bezier(0.16,1,0.3,1) forwards;
}
@keyframes qs-up { to { opacity: 1; transform: translateY(0); } }
.qs-pilar-num {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: #2563eb;
  font-variant-numeric: tabular-nums;
}
.qs-pilar-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--ld-fg-1);
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin: 0;
}
.qs-pilar-desc {
  font-size: 14px;
  color: var(--ld-fg-2);
  line-height: 1.6;
  margin: 0;
}

/* Sticky moment */
.qs-sticky {
  max-width: 1000px;
  margin: 0 auto 100px;
  padding: 60px 80px;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  opacity: 0;
  transform: translateY(20px);
  animation: qs-up 1s 0.6s cubic-bezier(0.16,1,0.3,1) forwards;
}
.qs-sticky-text {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 500;
  font-style: italic;
  letter-spacing: -0.01em;
  line-height: 1.4;
  color: var(--ld-fg-2);
  margin: 0;
}
.qs-sticky-accent {
  color: #2563eb;
  font-weight: 700;
  font-style: normal;
}

/* Valores wrap */
.qs-valores-wrap {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 36px;
  align-items: center;
}

/* Marquee infinito horizontal */
.qs-marquee {
  position: relative;
  width: 100%;
  overflow: hidden;
  padding: 28px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  background: linear-gradient(180deg, rgba(255,255,255,0.015), transparent 40%, transparent 60%, rgba(255,255,255,0.015));
}
.qs-marquee-fade {
  position: absolute;
  top: 0; bottom: 0;
  width: 180px;
  z-index: 2;
  pointer-events: none;
}
.qs-marquee-fade-l { left: 0;  background: linear-gradient(90deg, #07090f 10%, transparent); }
.qs-marquee-fade-r { right: 0; background: linear-gradient(270deg, #07090f 10%, transparent); }

.qs-marquee-track {
  display: flex;
  flex-wrap: nowrap;
  width: max-content;
  animation: qs-scroll 60s linear infinite;
  will-change: transform;
}
.qs-marquee:hover .qs-marquee-track { animation-play-state: paused; }

@keyframes qs-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(calc(-100% / 3)); }
}

.qs-mv {
  display: inline-flex;
  align-items: baseline;
  gap: 14px;
  padding: 6px 0;
  white-space: nowrap;
  flex-shrink: 0;
}
.qs-mv-num {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: #2563eb;
  font-variant-numeric: tabular-nums;
  align-self: center;
  padding: 4px 8px;
  border: 1px solid rgba(37,99,235,0.35);
  border-radius: 999px;
  background: rgba(37,99,235,0.08);
}
.qs-mv-name {
  font-size: clamp(28px, 3.4vw, 44px);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ld-fg-1);
  line-height: 1;
}
.qs-mv-desc {
  font-size: 15px;
  color: var(--ld-fg-2);
  font-weight: 400;
  letter-spacing: -0.005em;
  max-width: 360px;
  white-space: normal;
  line-height: 1.4;
  align-self: center;
}
.qs-mv-sep {
  margin: 0 32px;
  color: #2563eb;
  font-size: 24px;
  align-self: center;
  opacity: 0.5;
}

@media (prefers-reduced-motion: reduce) {
  .qs-marquee-track { animation: none; }
  .ch-line, .ch-meta, .ch-word, .qs-intro, .qs-pilar, .qs-sticky { animation: none; opacity: 1; transform: none; }
}

@media (max-width: 900px) {
  .ch-divider { padding: 60px 24px 32px; gap: 16px; }
  .qs-pilares { grid-template-columns: 1fr; padding-left: 24px; padding-right: 24px; }
  .qs-intro { padding-left: 24px; padding-right: 24px; }
  .qs-sticky { padding: 40px 24px; }
  .qs-mv-desc { max-width: 240px; font-size: 13px; }
  .qs-mv-sep { margin: 0 20px; }
}

/* Imagen contextual en intro de Nosotros */
.qs-intro-img-wrap {
  position: relative;
  margin-top: 40px;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.07);
  box-shadow: 0 24px 70px rgba(0,0,0,.45);
}
.qs-intro-img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  display: block;
  filter: brightness(.72) saturate(.85);
}
.qs-intro-img__tag {
  position: absolute;
  bottom: 20px;
  left: 24px;
  background: rgba(15,23,42,.75);
  backdrop-filter: blur(10px);
  color: rgba(255,255,255,.9);
  font-size: 13px;
  font-weight: 500;
  padding: 7px 16px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.1);
}
@media (max-width: 640px) {
  .qs-intro-img { height: 220px; }
}