/* ==========================================================================
   Ingeniero Carella — Diagnóstico Automotor
   Estilo: técnico / editorial / premium oscuro. Mobile-first.
   ========================================================================== */

@font-face {
  font-family: 'Poppins';
  src: url('fonts/Poppins-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Poppins';
  src: url('fonts/Poppins-500.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Poppins';
  src: url('fonts/Poppins-600.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #0a0b0d;
  --bg-alt: #101215;
  --surface: #16181c;
  --surface-2: #1c1f24;
  --border: rgba(245, 244, 241, 0.09);
  --border-strong: rgba(245, 244, 241, 0.18);
  --text: #f5f4f1;
  --text-dim: #b7b6b2;
  --text-mute: #83837f;
  --accent: #ffd500;
  --accent-dim: #c9a800;
  --accent-soft: rgba(255, 213, 0, 0.14);

  --font-display: 'Poppins', ui-sans-serif, system-ui, sans-serif;
  --font-body: 'Poppins', ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;

  --container: 1180px;
  --gutter: 1.25rem;
  --radius: 4px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; font-family: var(--font-display); font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
table { border-collapse: collapse; }

::selection { background: var(--accent); color: #0a0b0d; }

/* Barra de foco visible para accesibilidad con teclado */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ---- Reveal animations: defensive base (nunca deben ocultar contenido) ---- */
.reveal {
  opacity: 1;
  transform: none;
}
.js-anim-ready .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.js-anim-ready .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal[data-split] { opacity: 1; transform: none; }

/* ==========================================================================
   Splash
   ========================================================================== */
#splash {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  color: var(--accent);
  animation: splash-hide 4.5s forwards;
}
#splash.is-hidden { display: none; }
.splash__mark { animation: splash-spin 1.6s linear infinite; }
@keyframes splash-spin { to { transform: rotate(360deg); } }
@keyframes splash-hide {
  0%, 55% { opacity: 1; visibility: visible; }
  85% { opacity: 0; }
  100% { opacity: 0; visibility: hidden; display: none; }
}

/* ==========================================================================
   Layout helpers
   ========================================================================== */
.section__grid {
  max-width: var(--container);
  margin: 0 auto;
  padding: 5.5rem var(--gutter);
  display: grid;
  gap: 2.25rem;
}
/* Contenido en una sola columna (usado por casi todas las páginas internas) */
.section__grid--stack { grid-template-columns: 1fr; }
.section__grid--stack .section__head { position: static; }
.section__grid--timeline { grid-template-columns: 1fr; }
.section__grid--timeline .section__head { position: static; }
.section__body--prose { max-width: 72ch; }
.section__body--wide { max-width: 100%; }
.section__eyebrow {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.9rem;
}
.section__title {
  font-size: clamp(1.7rem, 5.5vw, 2.5rem);
  line-height: 1.15;
  margin-bottom: 1.25rem;
  max-width: 18ch;
}
.section__body p { color: var(--text-dim); max-width: 62ch; font-size: 1.02rem; }
.section__body p + p { margin-top: 1rem; }
.section__note {
  margin-top: 1.5rem;
  padding: 1rem 1.1rem;
  border-left: 2px solid var(--accent);
  background: var(--accent-soft);
  color: var(--text) !important;
  font-size: 0.95rem !important;
  max-width: 60ch;
}
.section__note--emphasis {
  border-left-width: 4px;
  padding: 1.5rem 1.75rem;
  max-width: 68ch;
  font-family: var(--font-display);
  font-size: 1.15rem !important;
  font-weight: 500;
  line-height: 1.45;
}
.placeholder-note {
  color: var(--accent) !important;
  font-style: italic;
  border: 1px dashed var(--border-strong);
  padding: 0.9rem 1rem;
  border-radius: var(--radius);
}

.section { border-top: 1px solid var(--border); position: relative; scroll-margin-top: 4.5rem; }

.section--bg-photo { overflow: hidden; }
.section__bg-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.08;
  z-index: 0;
  pointer-events: none;
}
.section--bg-photo > .section__grid { position: relative; z-index: 1; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.75rem;
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--text);
  border-bottom: 1px solid var(--border-strong);
  padding-bottom: 0.2rem;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), gap 0.25s var(--ease);
}
.link-arrow span { transition: transform 0.25s var(--ease); }
.link-arrow:hover { color: var(--accent); border-color: var(--accent); gap: 0.75rem; }

/* ==========================================================================
   Botones
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.4rem;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.95rem;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease), color .25s var(--ease);
  white-space: nowrap;
}
.btn--primary { background: var(--accent); color: #16110b; }
.btn--primary:hover { background: #ffe14d; transform: translateY(-2px); }
.btn--ghost { border: 1px solid var(--border-strong); color: var(--text); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  padding: 0.9rem var(--gutter);
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease), padding 0.35s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(10, 11, 13, 0.82);
  backdrop-filter: blur(10px);
  border-color: var(--border);
  padding: 0.6rem var(--gutter);
}
.site-header__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 0.55rem; }
.brand__logo { display: block; height: 56px; width: auto; }
.brand__text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}
.site-header__actions { display: flex; align-items: center; gap: 0.6rem; }
.icon-btn {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  transition: border-color .25s var(--ease), color .25s var(--ease);
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent); }

.menu-toggle {
  width: 46px; height: 46px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 6px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
}
.menu-toggle span {
  width: 18px; height: 2px; background: var(--text);
  transition: transform 0.35s var(--ease), opacity 0.35s var(--ease);
}
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

/* ==========================================================================
   Navegación de escritorio (barra horizontal, ≥960px)
   El menú hamburguesa queda reservado para tablet/celular (<960px).
   ========================================================================== */
.site-nav { display: none; }
.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav__item--dropdown { position: relative; }
.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.92rem;
  color: var(--text);
  background: none;
  border: 0;
  padding: 0.5rem 0;
  cursor: pointer;
  transition: color 0.25s var(--ease);
}
.site-nav__link:hover,
.site-nav__link[aria-current="page"],
.site-nav__link.is-active { color: var(--accent); }
.site-nav__caret { flex-shrink: 0; transition: transform 0.25s var(--ease); }
.site-nav__item--dropdown:hover .site-nav__caret,
.site-nav__trigger[aria-expanded="true"] .site-nav__caret { transform: rotate(180deg); }

.site-nav__dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  min-width: 240px;
  padding: 0.6rem;
  padding-top: 1rem;
  margin-top: -0.4rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.45);
  opacity: 0;
  transform: translateX(-50%) translateY(-6px);
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
}
.site-nav__item--dropdown:hover .site-nav__dropdown,
.site-nav__item--dropdown.is-open .site-nav__dropdown {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.site-nav__dropdown a {
  display: block;
  padding: 0.7rem 0.9rem;
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: var(--text-dim);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.site-nav__dropdown a:hover,
.site-nav__dropdown a[aria-current="page"] { background: var(--surface-2); color: var(--accent); }

@media (min-width: 960px) {
  .site-nav { display: flex; flex: 1; justify-content: center; }
  .menu-toggle { display: none; }
}

/* ==========================================================================
   Nav overlay (menú desplegable)
   ========================================================================== */
.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 190;
  background: var(--bg-alt);
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.45s var(--ease), visibility 0.45s;
  overflow-y: auto;
}
.nav-overlay.is-open { visibility: visible; opacity: 1; }
.nav-overlay__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 7rem var(--gutter) 3rem;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.nav-overlay__list { display: flex; flex-direction: column; }
.nav-overlay__list li { border-top: 1px solid var(--border); }
.nav-overlay__list li:last-child { border-bottom: 1px solid var(--border); }
.nav-overlay__list a {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 1.1rem 0;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 6vw, 2rem);
  font-weight: 500;
  opacity: 0;
  transform: translateX(-16px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease), color 0.25s var(--ease);
}
.nav-overlay.is-open .nav-overlay__list a { opacity: 1; transform: translateX(0); }
.nav-overlay__list a:hover { color: var(--accent); }
.nav-overlay__list a[aria-current="page"] { color: var(--accent); }
.nav-overlay__idx { font-size: 0.85rem; color: var(--accent); font-family: var(--font-body); }
.nav-overlay__footer {
  margin-top: 3rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.nav-overlay__wa {
  background: var(--accent);
  color: #16110b;
  padding: 0.8rem 1.3rem;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 500;
}
.nav-overlay__footer p { color: var(--text-mute); font-size: 0.9rem; }

body.nav-open { overflow: hidden; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem var(--gutter) 2.5rem;
  overflow: hidden;
}
.hero__media { position: absolute; inset: 0; z-index: 0; }
.hero__img {
  width: 100%; height: 100%; object-fit: cover;
  transform: scale(1.08);
  animation: hero-kenburns 16s ease-in-out infinite alternate;
}
@keyframes hero-kenburns {
  from { transform: scale(1.08) translate3d(0,0,0); }
  to { transform: scale(1.16) translate3d(-1%, -1%, 0); }
}
.hero__scrim {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(10,11,13,0.55) 0%, rgba(10,11,13,0.72) 55%, rgba(10,11,13,0.96) 100%),
    linear-gradient(90deg, rgba(10,11,13,0.55) 0%, rgba(10,11,13,0.15) 60%);
}
.hero__content { position: relative; z-index: 1; max-width: 780px; }
.hero__eyebrow {
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.hero__title {
  font-size: clamp(2.5rem, 11vw, 5.4rem);
  line-height: 0.98;
  margin-bottom: 1rem;
}
.hero__tagline {
  font-family: var(--font-display);
  font-size: clamp(1rem, 3vw, 1.3rem);
  color: var(--text);
  margin-bottom: 0.9rem;
}
.hero__tagline .dot { color: var(--accent); margin: 0 0.15em; }
.hero__tagline-highlight { color: var(--accent); font-weight: 600; }
.hero__lead { color: var(--text-dim); max-width: 46ch; margin: 0 auto 2rem; font-size: 1.02rem; }
.hero__cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.75rem; }

.hero__scroll {
  position: absolute; z-index: 1;
  right: var(--gutter); bottom: 1.5rem;
  width: 30px; height: 46px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  display: none;
}
.hero__scroll span {
  display: block;
  width: 4px; height: 8px;
  background: var(--accent);
  border-radius: 2px;
  margin: 8px auto;
  animation: scroll-cue 1.8s ease-in-out infinite;
}
@keyframes scroll-cue {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(14px); opacity: 0; }
  100% { opacity: 0; }
}

/* ==========================================================================
   Breadcrumbs + Page hero (encabezado de páginas internas)
   ========================================================================== */
.breadcrumbs {
  max-width: var(--container);
  margin: 0 auto;
  padding: 5.5rem var(--gutter) 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  color: var(--text-mute);
}
.breadcrumbs a { color: var(--text-mute); transition: color .2s var(--ease); }
.breadcrumbs a:hover { color: var(--accent); }
.breadcrumbs span[aria-current] { color: var(--text-dim); }
.breadcrumbs .sep { opacity: 0.5; }

.page-hero {
  max-width: var(--container);
  margin: 0 auto;
  padding: 1.75rem var(--gutter) 3.5rem;
  border-bottom: 1px solid var(--border);
}
.page-hero__eyebrow {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.page-hero__title {
  font-size: clamp(2.1rem, 7vw, 3.4rem);
  line-height: 1.05;
  max-width: 20ch;
  margin-bottom: 1.1rem;
}
.page-hero__lead { color: var(--text-dim); max-width: 58ch; font-size: 1.05rem; margin-bottom: 1.75rem; }
.page-hero__cta { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 1.75rem; }
.page-hero__badges { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.page-hero__badge {
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  font-family: var(--font-display);
  font-size: 0.8rem;
  color: var(--text-dim);
}
.page-hero__badge strong { color: var(--accent); }

/* ==========================================================================
   Experiencia — collage de fotos + lista de checks
   ========================================================================== */
.experience-intro .section__grid { padding-top: 2rem; }

.experience-intro__collage {
  position: relative;
  max-width: 360px;
  margin: 0 auto 3rem;
  padding: 0 12% 16% 0;
}
.experience-intro__photo {
  margin: 0;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface);
}
.experience-intro__photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.experience-intro__photo--main { aspect-ratio: 4 / 5; }
.experience-intro__photo--secondary {
  position: absolute;
  left: -10%;
  bottom: 0;
  z-index: 2;
  width: 58%;
  aspect-ratio: 4 / 5;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.55);
}
.experience-intro__stat {
  position: absolute;
  top: 10%;
  right: 0;
  z-index: 3;
  min-width: 108px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 16px;
  padding: 1.1rem 1.2rem;
  text-align: center;
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.55);
}
.experience-intro__stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
}
.experience-intro__stat-label {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.7rem;
  color: var(--text-mute);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  line-height: 1.4;
}

.experience-intro__title {
  font-size: clamp(1.8rem, 4.5vw, 2.6rem);
  line-height: 1.15;
  margin-bottom: 1.1rem;
  max-width: 18ch;
}
.experience-intro__title em { font-style: italic; color: var(--accent); }
.experience-intro__content > p { color: var(--text-dim); max-width: 52ch; }
.experience-intro__subhead {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  margin: 2rem 0 1.1rem;
}

.check-list { display: grid; gap: 0.9rem; list-style: none; margin: 0 0 2rem; padding: 0; max-width: 760px; }
.check-list li { display: flex; align-items: flex-start; gap: 0.6rem; color: var(--text-dim); font-size: 0.92rem; }
.check-list svg { color: var(--accent); flex-shrink: 0; margin-top: 0.1rem; }

/* ==========================================================================
   GNC — hero con foto + grilla de síntomas
   ========================================================================== */
.gnc-hero .section__grid { padding-top: 2rem; }
.gnc-hero__title {
  font-size: clamp(2.1rem, 5.5vw, 3.2rem);
  line-height: 1.05;
  margin-bottom: 1.1rem;
}
.gnc-hero__title .dot { color: var(--accent); margin: 0 0.2em; }
.gnc-hero__title-accent { color: var(--accent); }
.gnc-hero__content > p { color: var(--text-dim); max-width: 46ch; margin-bottom: 1.75rem; font-size: 1.02rem; }

.symptom-grid { display: grid; gap: 1rem; margin-top: 2rem; }
.symptom-card {
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease), transform 0.25s var(--ease);
}
.symptom-card:hover { border-color: var(--accent); background: var(--surface-2); transform: translateY(-3px); }
.symptom-card__icon { color: var(--accent); margin-bottom: 1rem; display: block; }
.symptom-card h3 { font-size: 1.05rem; margin-bottom: 0.5rem; }
.symptom-card p { color: var(--text-dim); font-size: 0.92rem; }

/* ==========================================================================
   Feature list / tag list / timeline
   ========================================================================== */
.feature-list { margin-top: 2rem; display: grid; gap: 1.5rem; }
.feature-list li { display: flex; gap: 1.1rem; padding-top: 1.5rem; border-top: 1px solid var(--border); }
.feature-list li:first-child { border-top: 1px solid var(--border); }
.feature-list__num {
  font-family: var(--font-display);
  color: var(--accent);
  font-size: 0.85rem;
  min-width: 2.4rem;
}
.feature-list h3 { font-size: 1.05rem; margin-bottom: 0.35rem; }
.feature-list p { color: var(--text-dim); font-size: 0.95rem; }

.tag-list { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.75rem; }
.tag-list li {
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 0.5rem 1rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--text-dim);
}

.timeline-v {
  position: relative;
  list-style: none;
  margin: 2.5rem 0 0;
  padding-left: 2rem;
  border-left: 2px solid var(--border-strong);
}
.timeline-v__item { position: relative; padding-bottom: 2.25rem; }
.timeline-v__item:last-child { padding-bottom: 0; }
.timeline-v__dot {
  position: absolute;
  left: -2.44rem;
  top: 0.3rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--border-strong);
}
.timeline-v__dot--current {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.timeline-v__years {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 0.02em;
  margin-bottom: 0.5rem;
}
.timeline-v__item h3 { font-size: 1.1rem; margin-bottom: 0.4rem; }
.timeline-v__item p { color: var(--text-dim); font-size: 0.95rem; max-width: 56ch; }

.timeline-v__linkedin {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 2.5rem;
  color: var(--text-mute);
  font-size: 0.85rem;
  transition: color 0.2s var(--ease);
}
.timeline-v__linkedin svg { flex-shrink: 0; }
.timeline-v__linkedin:hover { color: var(--accent); }

.timeline-gallery { max-width: 420px; }
.timeline-gallery__frame {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface);
}
.timeline-gallery__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.6s var(--ease);
}
.timeline-gallery__img.is-active { opacity: 1; }
.timeline-gallery__nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.25rem;
}
.timeline-gallery__arrow {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}
.timeline-gallery__arrow:hover { border-color: var(--accent); color: var(--accent); }
.timeline-gallery__dots { display: flex; gap: 0.5rem; }
.timeline-gallery__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border-strong);
  transition: background 0.25s var(--ease), transform 0.25s var(--ease);
}
.timeline-gallery__dot.is-active { background: var(--accent); transform: scale(1.35); }

/* ==========================================================================
   Media (imágenes en secciones)
   ========================================================================== */
.section__media {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  clip-path: inset(0 0 0 0);
}
.section__media img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; }

/* ==========================================================================
   Rating badge + reseñas
   ========================================================================== */
.rating-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1.25rem;
  padding: 0.7rem 1.1rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-family: var(--font-display);
}
.rating-badge__stars { color: var(--accent); letter-spacing: 0.05em; }
.rating-badge__num { font-weight: 600; }
.rating-badge__count { color: var(--text-mute); font-size: 0.85rem; }

.reviews-carousel { margin-top: 1rem; }
.reviews-carousel__track {
  display: flex;
  gap: 1.25rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding-bottom: 0.25rem;
  scrollbar-width: none;
}
.reviews-carousel__track::-webkit-scrollbar { display: none; }
.reviews-carousel__track .review-card { flex: 0 0 100%; scroll-snap-align: start; }

.reviews-carousel__nav { display: flex; justify-content: flex-end; gap: 0.75rem; margin-top: 1.25rem; }
.reviews-carousel__arrow {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}
.reviews-carousel__arrow:hover { border-color: var(--accent); color: var(--accent); }

.review-card {
  margin: 0;
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
.review-card p { color: var(--text); font-size: 1rem; line-height: 1.6; }
.review-card footer { margin-top: 1rem; color: var(--text-mute); font-size: 0.82rem; font-style: normal; }

/* ==========================================================================
   Casos reales
   ========================================================================== */
.cases-grid { display: grid; grid-template-columns: 1fr; gap: 0.9rem; margin-top: 2rem; }
.case-tile {
  position: relative;
  margin: 0;
  aspect-ratio: 4/3;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface);
}
.case-tile img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.case-tile:hover img { transform: scale(1.05); }
.case-tile--video { display: flex; align-items: center; justify-content: center; background: linear-gradient(160deg, var(--surface-2), var(--bg-alt)); }
.cases-grid--videos { max-width: 420px; margin: 2rem auto 0; }
.cases-grid--videos .case-tile--video { aspect-ratio: 9 / 16; }
.cases-grid--videos .case-tile--video video { width: 100%; height: 100%; object-fit: cover; display: block; }
.cases-grid--single { max-width: 720px; }
.cases-grid--single .case-tile--wide { aspect-ratio: 3 / 2; }
.case-tile__play {
  width: 54px; height: 54px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent);
  font-size: 0.9rem;
}
.case-tile figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 0.7rem 0.85rem;
  font-size: 0.8rem;
  color: var(--text);
  background: linear-gradient(0deg, rgba(10,11,13,0.85), transparent);
}

/* ==========================================================================
   Contacto
   ========================================================================== */
.contact-list { display: grid; gap: 0.75rem; margin-top: 2rem; }
.contact-item {
  display: flex; align-items: center; gap: 0.85rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  transition: border-color .25s var(--ease), background .25s var(--ease);
}
.contact-item svg { color: var(--accent); flex-shrink: 0; }
.contact-item:hover { border-color: var(--accent); background: var(--surface); }

.hours-table { margin-top: 2rem; width: 100%; max-width: 420px; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.hours-table caption { text-align: left; padding: 0.9rem 1.1rem; font-family: var(--font-display); font-size: 0.85rem; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); border-bottom: 1px solid var(--border); }
.hours-table tr { border-top: 1px solid var(--border); }
.hours-table tr:first-child { border-top: 0; }
.hours-table th, .hours-table td { padding: 0.75rem 1.1rem; text-align: left; font-weight: 400; font-size: 0.92rem; }
.hours-table th { color: var(--text-dim); }
.hours-table td { color: var(--text); text-align: right; }

.section__map { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); min-height: 320px; }
.section__map iframe { width: 100%; height: 100%; min-height: 320px; border: 0; filter: grayscale(0.35) invert(0.92) contrast(0.9); }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-alt); }
.site-footer__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 3.5rem var(--gutter) 2.5rem;
  display: grid;
  gap: 2rem;
}
.site-footer__brand p { color: var(--text-mute); font-size: 0.85rem; margin-top: 0.4rem; }
.site-footer__social { margin-top: 1.5rem; }
.site-footer__social-label {
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-mute);
  margin-bottom: 0.7rem;
}
.site-footer__social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-dim);
  font-size: 0.9rem;
  transition: color 0.25s var(--ease);
}
.site-footer__social-link svg { color: var(--accent); flex-shrink: 0; }
.site-footer__social-link:hover { color: var(--accent); }
.site-footer__links { display: flex; flex-wrap: wrap; gap: 1.25rem; }
.site-footer__links a { color: var(--text-dim); font-size: 0.9rem; }
.site-footer__links a:hover { color: var(--accent); }
.site-footer__meta { color: var(--text-mute); font-size: 0.82rem; display: grid; gap: 0.3rem; }

/* ==========================================================================
   Home — grid de especialidades
   ========================================================================== */
.specialty-grid { display: grid; gap: 1rem; margin-top: 2rem; }
.specialty-card {
  display: block;
  padding: 1.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color .3s var(--ease), background .3s var(--ease), transform .3s var(--ease);
}
.specialty-card:hover { border-color: var(--accent); background: var(--surface); transform: translateY(-3px); }
.specialty-card__icon { color: var(--accent); margin-bottom: 1.1rem; }
.specialty-card__idx { font-family: var(--font-display); font-size: 0.8rem; color: var(--text-mute); margin-bottom: 0.6rem; display: block; }
.specialty-card h3 { font-size: 1.25rem; margin-bottom: 0.6rem; }
.specialty-card p { color: var(--text-dim); font-size: 0.95rem; margin-bottom: 1.1rem; }
.specialty-card .link-arrow { margin-top: 0; }
.specialty-card__photo {
  display: block;
  margin-top: 1.5rem;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--border);
}
.specialty-card__photo img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.specialty-card:hover .specialty-card__photo img { transform: scale(1.05); }

/* ==========================================================================
   Home — franja de prueba social
   ========================================================================== */
.proof-strip {
  display: grid;
  gap: 1.75rem;
  align-items: center;
  padding: 2.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  margin-top: 2rem;
}
.proof-strip__quote { font-family: var(--font-display); font-size: 1.15rem; line-height: 1.45; max-width: 46ch; }
.proof-strip__quote cite { display: block; margin-top: 0.9rem; color: var(--text-mute); font-size: 0.82rem; font-style: normal; }

/* ==========================================================================
   Banda CTA (antes del footer)
   ========================================================================== */
.cta-band {
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
}
.cta-band__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 4rem var(--gutter);
  display: grid;
  gap: 2rem;
}
.cta-band__title { font-size: clamp(1.5rem, 4.5vw, 2.1rem); max-width: 22ch; }
.cta-band__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }

/* ==========================================================================
   Cross-links (especialidades relacionadas)
   ========================================================================== */
.cross-links {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.cross-links__label {
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-mute);
  margin-bottom: 1rem;
}
.cross-links__list { display: flex; flex-direction: column; gap: 0.6rem; }
.cross-links__list a {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-display);
  transition: border-color .25s var(--ease), color .25s var(--ease);
}
.cross-links__list a:hover { border-color: var(--accent); color: var(--accent); }

/* ==========================================================================
   FAQ (details/summary nativo, sin JS)
   ========================================================================== */
.faq-list { margin-top: 2rem; display: grid; gap: 0; border-top: 1px solid var(--border); }
.faq-list details {
  border-bottom: 1px solid var(--border);
  padding: 1.1rem 0;
}
.faq-list summary {
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 1.02rem;
  color: var(--text);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: '+';
  color: var(--accent);
  font-size: 1.3rem;
  flex-shrink: 0;
  transition: transform .25s var(--ease);
}
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list p { color: var(--text-dim); margin-top: 0.9rem; font-size: 0.95rem; max-width: 62ch; }

/* ==========================================================================
   WhatsApp flotante
   ========================================================================== */
.float-wa {
  position: fixed;
  right: 1.1rem; bottom: 1.1rem;
  z-index: 150;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: #25d366;
  color: #08130d;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
}
.float-wa::before {
  content: '';
  position: absolute; inset: 0;
  border-radius: 50%;
  border: 2px solid #25d366;
  animation: wa-pulse 2.6s ease-out infinite;
}
@keyframes wa-pulse {
  0% { transform: scale(1); opacity: 0.7; }
  100% { transform: scale(1.7); opacity: 0; }
}

/* ==========================================================================
   Tablet+ (min-width 640px)
   ========================================================================== */
@media (min-width: 640px) {
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid--videos { max-width: 640px; }
  .cases-grid--single { grid-template-columns: 1fr; max-width: 720px; }
  .reviews-carousel__track .review-card { flex: 0 0 calc(50% - 0.625rem); }
  .specialty-grid { grid-template-columns: repeat(3, 1fr); }
  .proof-strip { grid-template-columns: 1fr auto; }
  .cta-band__inner { grid-template-columns: 0.85fr 1.15fr; align-items: start; }
  .check-list { grid-template-columns: repeat(2, 1fr); }
  .symptom-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ==========================================================================
   Desktop (min-width 960px)
   ========================================================================== */
@media (min-width: 960px) {
  :root { --gutter: 2.5rem; }

  .hero__scroll { display: block; }

  .section__grid {
    grid-template-columns: 0.85fr 1.15fr;
    align-items: start;
    padding: 8rem var(--gutter);
  }
  .section__head { position: sticky; top: 7.5rem; }

  .section__grid--stack { grid-template-columns: 1fr; }
  .section__grid--media { grid-template-columns: 1fr 1fr; align-items: center; gap: 2.5rem; }
  .section__grid--experience { grid-template-columns: 0.85fr 1.15fr; align-items: center; gap: 3rem; }

  .section__grid--timeline { grid-template-columns: 0.62fr 1fr; align-items: start; gap: 3rem; }
  .section__grid--timeline .section__head { grid-column: 1 / -1; position: static; }
  .timeline-gallery { position: sticky; top: 7.5rem; }

  .experience-intro__collage { margin: 0; max-width: none; }
  .check-list { grid-template-columns: repeat(2, 1fr); }
  .symptom-grid { grid-template-columns: repeat(3, 1fr); }

  .section--contact .section__grid { grid-template-columns: 0.85fr 1.15fr; }
  .section__map { min-height: 460px; }
  .section__map iframe { min-height: 460px; }

  .cases-grid { grid-template-columns: repeat(4, 1fr); }
  .cases-grid--videos { grid-template-columns: repeat(2, 1fr); }
  .cases-grid--single { grid-template-columns: 1fr; }

  .site-footer__inner { grid-template-columns: 1fr auto auto; align-items: start; }

  .nav-overlay__list a { font-size: clamp(2rem, 4.2vw, 3.4rem); }

  .page-hero { padding: 3rem var(--gutter) 4.5rem; }
  .breadcrumbs { padding-top: 10.5rem; }
  .cross-links__list { flex-direction: row; }
  .cross-links__list a { flex: 1; }

  .brand__logo { height: 112px; }
  .hero { padding-top: 10.5rem; }
}

/* ==========================================================================
   prefers-reduced-motion — sólo se atenúan animaciones intrusivas,
   nunca se ocultan micro-interacciones (ver guía Windows del skill)
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  .hero__img { animation: none; }
  html { scroll-behavior: auto; }
}