/* ==========================================================================
   Vendedor24h — Landing
   Mobile-first · CSS nativo · sin frameworks
   ========================================================================== */

:root {
  --green-50:  #e9faf1;
  --green-100: #c9f2dd;
  --green-300: #5cd49e;
  --green-400: #24bd7d;
  --green-500: #07a866;
  --green-600: #018a54;
  --green-700: #026e46;
  --violet-400: #8b7bfb;
  --violet-500: #7059f3;
  --violet-600: #5b40df;
  --violet-50: #efecfe;

  /* Verde WhatsApp — acento para lo que habla de WhatsApp */
  --wa:     #20c15c;
  --wa-50:  #e6f8ee;
  --wa-700: #0e7a3f;

  --ink-900: #0a1512;
  --ink-800: #0f1d18;
  --ink-700: #16261f;

  --text:      #16211d;
  --text-soft: #4b5a55;
  --text-mute: #7d8b86;
  --bg:        #ffffff;
  --bg-alt:    #f5f8f6;
  --border:    #e5eae7;

  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 3px rgba(16, 33, 27, .07), 0 1px 2px rgba(16, 33, 27, .04);
  --shadow-md: 0 10px 30px rgba(16, 33, 27, .08), 0 3px 8px rgba(16, 33, 27, .05);
  --shadow-lg: 0 24px 60px rgba(10, 21, 18, .16), 0 8px 20px rgba(10, 21, 18, .08);
  --ease: cubic-bezier(.4, 0, .2, 1);
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --header-h: 64px;
  --maxw: 1140px;
  --gutter: 20px;
}

/* ----- Reset ----- */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: hidden; scroll-padding-top: calc(var(--header-h) + 16px); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { animation: none !important; transition: none !important; } }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
[hidden] { display: none !important; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; padding: 0; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -.02em; font-weight: 750; }
button { font: inherit; cursor: pointer; border: 0; background: none; }
:focus-visible { outline: 3px solid var(--green-400); outline-offset: 3px; border-radius: 6px; }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--ink-900); color: #fff; padding: 10px 16px; border-radius: 0 0 10px 0;
}
.skip-link:focus { left: 0; }

/* ----- Loader de carga ----- */
#page-loader {
  position: fixed; inset: 0; z-index: 9999;
  display: grid; place-items: center;
  background: radial-gradient(700px 400px at 50% 38%, #12261e, var(--ink-900) 70%);
  transition: opacity .5s var(--ease), visibility .5s var(--ease);
}
#page-loader.is-done { opacity: 0; visibility: hidden; }
.loader__box { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.loader__mark { animation: loader-breathe 2.4s ease-in-out infinite; }
.loader__mark path { animation: loader-trace 2.4s var(--ease) infinite; }
.loader__word { font-size: 17px; font-weight: 700; letter-spacing: -.015em; color: #fff; }
.loader__word b { color: var(--green-300); font-weight: 800; }
.loader__bar {
  display: block; width: 132px; height: 3px; border-radius: 999px;
  background: rgba(255, 255, 255, .12); overflow: hidden;
}
.loader__bar i {
  display: block; width: 42%; height: 100%; border-radius: inherit;
  background: linear-gradient(90deg, transparent, var(--green-300), transparent);
  animation: loader-sweep 1.15s var(--ease) infinite;
}
@keyframes loader-sweep { 0% { transform: translateX(-130%); } 100% { transform: translateX(360%); } }
@keyframes loader-breathe { 0%, 100% { transform: scale(1); opacity: .92; } 50% { transform: scale(1.06); opacity: 1; } }
@keyframes loader-trace { 0%, 100% { opacity: .3; } 50% { opacity: .7; } }
@media (prefers-reduced-motion: reduce) {
  .loader__mark, .loader__mark path, .loader__bar i { animation: none; }
  .loader__bar i { width: 100%; }
}

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
.container--narrow { max-width: 760px; }

/* ----- Buttons ----- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 20px; border-radius: 999px;
  font-weight: 650; font-size: 15px; white-space: nowrap;
  transition: transform .12s var(--ease), box-shadow .18s var(--ease), background .18s var(--ease), color .18s var(--ease);
  border: 1.5px solid transparent;
}
.btn:active { transform: translateY(1px) scale(.99); }
.btn--sm { padding: 9px 16px; font-size: 14px; }
.btn--lg { padding: 15px 28px; font-size: 16px; }
.btn--block { width: 100%; }
.btn--primary { background: linear-gradient(180deg, var(--green-500), var(--green-600)); color: #fff; box-shadow: 0 6px 20px rgba(7, 168, 102, .32); }
.btn--primary:hover { box-shadow: 0 10px 30px rgba(7, 168, 102, .42); transform: translateY(-1px); }
.btn--ghost { color: var(--text); border-color: var(--border); background: #fff; }
.btn--ghost:hover { border-color: var(--green-400); color: var(--green-700); }
.btn--dark { background: rgba(255,255,255,.08); color: #fff; border-color: rgba(255,255,255,.22); }
.btn--dark:hover { background: rgba(255,255,255,.16); }

/* ----- Header ----- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .82);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
}
.site-header.is-scrolled { border-color: var(--border); box-shadow: var(--shadow-sm); background: rgba(255, 255, 255, .9); }
.header__inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 24px; }

.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 750; letter-spacing: -.02em; }
.brand__icon { width: 30px; height: 30px; flex-shrink: 0; display: block; }
.brand__lockup { display: flex; flex-direction: column; line-height: 1.05; }
.brand__name { font-size: 17px; }
.brand__tagline { font-size: 9px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; margin-top: 3px; }

/* Sobre fondo claro (header): texto oscuro, acento verde azulado */
.brand--light { color: #14211d; }
.brand--light .brand__name b { color: #0e9e8c; font-weight: 800; }
.brand--light .brand__tagline { color: var(--text-mute); }

/* Sobre fondo oscuro (footer): texto blanco, acento verde menta */
.brand--dark { color: #fff; }
.brand--dark .brand__name { color: #fff; }
.brand--dark .brand__name b { color: #2fd39b; font-weight: 800; }

.nav__toggle { display: none; }
.nav__menu { display: flex; align-items: center; gap: 4px; }
.nav__menu > li > a:not(.btn) {
  display: block; padding: 8px 12px; border-radius: 8px;
  font-size: 14.5px; font-weight: 550; color: var(--text-soft);
}
.nav__menu > li > a:not(.btn):hover { color: var(--text); background: var(--bg-alt); }
.nav__cta-mobile { display: none; }
.header__actions { display: flex; align-items: center; gap: 10px; }

/* ----- Hero ----- */
.hero {
  position: relative;
  isolation: isolate;
  background:
    radial-gradient(circle at 1px 1px, rgba(255, 255, 255, .045) 1px, transparent 0) 0 0 / 34px 34px,
    radial-gradient(1100px 500px at 80% -10%, #0f2a20 0%, transparent 60%),
    linear-gradient(180deg, var(--ink-800), var(--ink-900) 70%, var(--ink-900));
  color: #fff;
  padding: 56px 0 0;
  overflow: hidden;
}
.hero__fx { position: absolute; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.hero__orb {
  position: absolute; border-radius: 50%;
  filter: blur(80px); opacity: .32; will-change: transform;
}
.hero__orb--1 {
  width: 500px; height: 500px; left: -170px; bottom: -90px;
  background: radial-gradient(circle, rgba(122, 100, 255, .35), transparent 70%);
  animation: orb-1 24s var(--ease) infinite alternate;
}
.hero__orb--2 {
  width: 460px; height: 460px; right: -140px; top: 0;
  background: radial-gradient(circle, rgba(47, 211, 155, .28), transparent 70%);
  animation: orb-2 30s var(--ease) infinite alternate;
}
.hero__orb--3 {
  width: 320px; height: 320px; left: 42%; top: 48%;
  background: radial-gradient(circle, rgba(7, 168, 102, .24), transparent 70%);
  animation: orb-3 20s var(--ease) infinite alternate;
}
@keyframes orb-1 { from { transform: translate(0, 0) scale(1); } to { transform: translate(90px, -60px) scale(1.18); } }
@keyframes orb-2 { from { transform: translate(0, 0) scale(1); } to { transform: translate(-70px, 50px) scale(1.12); } }
@keyframes orb-3 { from { transform: translate(-50px, 10px) scale(.9); } to { transform: translate(55px, -40px) scale(1.1); } }
@media (prefers-reduced-motion: reduce) { .hero__orb { animation: none; } }

.hero__grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 44px; position: relative; z-index: 1; }
.hero__copy, .hero__visual { min-width: 0; }
.hero__eyebrow {
  display: inline-block; font-size: 13px; font-weight: 650; letter-spacing: .02em;
  color: var(--green-300); background: rgba(7, 168, 102, .14);
  padding: 6px 12px; border-radius: 999px; margin-bottom: 18px;
}
.hero__title { font-size: clamp(2.1rem, 7vw, 3.6rem); font-weight: 800; line-height: 1.1; letter-spacing: -.025em; }
.hero__title span { color: var(--green-300); }
.hero__sub { margin-top: 18px; font-size: clamp(1rem, 2.6vw, 1.18rem); color: #b9cbc4; max-width: 32em; }
.hero__sub strong { color: #fff; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero__points { display: flex; flex-wrap: wrap; gap: 16px 22px; margin-top: 24px; font-size: 13.5px; color: #9db2ab; }
.hero__points li { display: flex; align-items: center; gap: 7px; }
.hero__points svg { color: var(--green-400); }

.hero__visual { position: relative; padding: 22px 0 30px; }
.chat {
  background: #fff; color: var(--text);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  width: 100%; max-width: 400px; margin: 0 auto;
}
.chat__bar { display: flex; align-items: center; gap: 11px; padding: 14px 16px; background: linear-gradient(180deg, #0f1d18, #16261f); color: #fff; }
.chat__avatar {
  width: 38px; height: 38px; border-radius: 999px; flex-shrink: 0;
  display: grid; place-items: center; font-weight: 700;
  background: linear-gradient(140deg, var(--violet-400), var(--green-500)); color: #fff;
}
.chat__bar strong { display: block; font-size: 13.5px; }
.chat__status { font-size: 11.5px; color: #9db2ab; display: flex; align-items: center; gap: 5px; }
.chat__status i { width: 7px; height: 7px; border-radius: 999px; background: var(--wa); }
.chat__body { padding: 16px; display: flex; flex-direction: column; gap: 10px; background: #f5f8f6; min-height: 320px; }
.bubble { max-width: 82%; padding: 10px 14px; border-radius: 15px; font-size: 14px; line-height: 1.5; box-shadow: var(--shadow-sm); }
.bubble--in { align-self: flex-start; background: #fff; border-bottom-left-radius: 5px; }
.bubble--in strong { color: var(--green-700); }
.bubble--out { align-self: flex-end; background: var(--wa); color: #fff; border-bottom-right-radius: 5px; }
.bubble--out strong { color: #fff; }

/* Franja "WhatsApp Business" */
.wa-strip { background: var(--wa-50); border-top: 1px solid var(--wa-100, #c3edd3); border-bottom: 1px solid var(--wa-100, #c3edd3); }
.wa-strip__inner { display: flex; align-items: center; justify-content: center; gap: 14px 24px; flex-wrap: wrap; padding: 16px 20px; text-align: center; }
.wa-strip__badge { display: inline-flex; align-items: center; gap: 9px; font-size: 14px; font-weight: 700; color: var(--wa-700); }
.wa-strip__note { font-size: 13px; color: var(--text-soft); }
.chat__typing { align-self: flex-start; display: inline-flex; gap: 4px; padding: 13px 15px; background: #fff; border-radius: 15px; border-bottom-left-radius: 5px; box-shadow: var(--shadow-sm); }
.chat__typing span { width: 7px; height: 7px; border-radius: 999px; background: var(--green-400); animation: blink 1.2s infinite; }

/* Secuencia animada del chat (la activa landing.js) */
.chat--anim .chat__body { justify-content: flex-start; overflow: hidden; }
.chat--anim .bubble,
.chat--anim .chat__typing {
  opacity: 0; transform: translateY(12px) scale(.96);
  transition: opacity .34s var(--ease), transform .34s var(--ease);
}
.chat--anim .is-hidden { display: none !important; }
.chat--anim .is-shown { opacity: 1; transform: none; }
.chat__typing span:nth-child(2) { animation-delay: .2s; }
.chat__typing span:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%, 60%, 100% { opacity: .3; transform: translateY(0); } 30% { opacity: 1; transform: translateY(-3px); } }

.hero__badge {
  position: absolute; display: flex; align-items: center; gap: 7px;
  background: #fff; color: var(--text); font-weight: 650; font-size: 12.5px;
  padding: 8px 13px; border-radius: 999px; box-shadow: var(--shadow-md);
  z-index: 2; white-space: nowrap;
}
.hero__badge svg { color: var(--green-600); }
.hero__badge--1 { top: -6px; left: -4px; }
.hero__badge--2 { bottom: -8px; right: -4px; }

.marquee { position: relative; z-index: 1; margin-top: 44px; padding: 18px 0; border-top: 1px solid rgba(255,255,255,.08); overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.marquee__track { display: flex; gap: 44px; white-space: nowrap; width: max-content; animation: scroll 26s linear infinite; }
.marquee__track span { color: #7f958e; font-weight: 650; font-size: 14px; letter-spacing: .02em; }
@keyframes scroll { to { transform: translateX(-50%); } }

/* ----- Sections ----- */
.section { padding: 68px 0; }
.section--tight { padding: 48px 0; }
.section--alt { background: var(--bg-alt); }
.section__head { text-align: center; max-width: 620px; margin: 0 auto 44px; }
.section__eyebrow { font-size: 13px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--green-600); }
.section__title { font-size: clamp(1.7rem, 4.6vw, 2.4rem); margin-top: 10px; }
.section__lead { margin-top: 14px; color: var(--text-soft); font-size: 1.05rem; }
.section__cta { text-align: center; margin-top: 42px; }

.pitch { text-align: center; max-width: 680px; margin: 0 auto; }
.pitch h2 { font-size: clamp(1.5rem, 4.4vw, 2.1rem); }
.pitch p { margin-top: 14px; color: var(--text-soft); font-size: 1.05rem; }

/* ----- Steps ----- */
.steps { display: grid; grid-template-columns: minmax(0, 1fr); gap: 18px; }
.step {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow-sm); position: relative;
}
.step__n {
  display: grid; place-items: center;
  width: 36px; height: 36px; border-radius: 10px; margin-bottom: 14px;
  background: var(--green-50); color: var(--green-700); font-weight: 800; font-size: 16px;
}
.step h3 { font-size: 1.05rem; }
.step p { margin-top: 8px; color: var(--text-soft); font-size: .96rem; }

/* ----- Features ----- */
.features { display: grid; grid-template-columns: minmax(0, 1fr); gap: 18px; }
.feature {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow-sm);
  transition: transform .18s var(--ease), box-shadow .18s var(--ease);
}
.feature:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.feature__ic { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 14px; }
.feature__ic svg { width: 24px; height: 24px; }
.feature__ic--green { background: var(--green-50); color: var(--green-600); }
.feature__ic--violet { background: var(--violet-50); color: var(--violet-600); }
.feature h3 { font-size: 1.08rem; }
.feature p { margin-top: 8px; color: var(--text-soft); font-size: .96rem; }

/* ----- Split ----- */
.split { display: grid; grid-template-columns: minmax(0, 1fr); gap: 36px; align-items: center; }
.split__media, .split__copy { min-width: 0; }
.split__copy .section__title { margin-top: 8px; }
.check-list { margin: 22px 0 26px; display: grid; gap: 12px; }
.check-list li {
  position: relative; padding-left: 30px; color: var(--text-soft); font-size: 1rem;
}
.check-list li::before {
  content: ""; position: absolute; left: 0; top: 3px;
  width: 20px; height: 20px; border-radius: 999px;
  background: var(--green-50) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23018a54' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center / 14px no-repeat;
}
.tag { display: inline-block; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--violet-600); background: var(--violet-50); padding: 2px 7px; border-radius: 6px; margin-left: 4px; }

.mini-panel { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: 18px; display: grid; gap: 4px; }
.mini-panel__row { display: flex; align-items: center; gap: 11px; padding: 12px 10px; border-radius: 10px; font-size: 14px; color: var(--text-soft); }
.mini-panel__row:nth-child(odd) { background: var(--bg-alt); }
.dot { width: 9px; height: 9px; border-radius: 999px; flex-shrink: 0; }
.dot--green { background: var(--green-500); }
.dot--violet { background: var(--violet-500); }
.dot--amber { background: #d98e04; }
.dot--slate { background: #94a3b8; }

/* ----- Use cases ----- */
.use-cases { display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; }
.use-case { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow-sm); }
.use-case strong { display: block; font-size: 1rem; }
.use-case span { display: block; margin-top: 5px; color: var(--text-mute); font-size: .92rem; }

/* ----- Pricing ----- */
.price-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 20px; max-width: 1040px; margin: 0 auto; align-items: start; }
.price-card {
  position: relative;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); padding: 30px;
}
.price-card--featured { border-color: var(--green-500); box-shadow: 0 0 0 1px var(--green-500), var(--shadow-lg); }
.price-card__tag {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: var(--green-600); color: #fff; font-size: 11.5px; font-weight: 700;
  padding: 5px 14px; border-radius: 999px; letter-spacing: .02em; white-space: nowrap;
}
.price-card__top { text-align: center; padding-bottom: 20px; border-bottom: 1px solid var(--border); }
.price-card__label { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--green-600); }
.price-card__price { font-size: 2.2rem; font-weight: 800; margin-top: 6px; letter-spacing: -.02em; }
.price-card__price span { font-size: .95rem; font-weight: 500; color: var(--text-mute); letter-spacing: 0; }
.price-card__list { margin: 22px 0; display: grid; gap: 11px; }
.price-card__list li { position: relative; padding-left: 28px; color: var(--text-soft); font-size: .96rem; }
.price-card__list li::before {
  content: ""; position: absolute; left: 0; top: 3px; width: 18px; height: 18px; border-radius: 999px;
  background: var(--green-50) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23018a54' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center / 12px no-repeat;
}
.price-card__note { text-align: center; margin-top: 14px; font-size: 13.5px; color: var(--text-mute); }
.price-card__note a { color: var(--green-700); font-weight: 650; }

/* ----- FAQ ----- */
.faq { display: grid; gap: 12px; }
.faq__item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.faq__item summary {
  list-style: none; cursor: pointer; padding: 18px 20px;
  font-weight: 650; font-size: 1rem; display: flex; justify-content: space-between; gap: 14px; align-items: center;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: ""; width: 20px; height: 20px; flex-shrink: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%237d8b86' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") center / contain no-repeat;
  transition: transform .2s var(--ease);
}
.faq__item[open] summary::after { transform: rotate(180deg); }
.faq__item p { padding: 0 20px 20px; color: var(--text-soft); font-size: .97rem; }

/* ----- CTA final ----- */
.cta-final { background: linear-gradient(150deg, #0f2a20, var(--ink-900) 60%, #12241c); color: #fff; padding: 72px 0; text-align: center; }
.cta-final__inner { max-width: 620px; margin: 0 auto; }
.cta-final h2 { font-size: clamp(1.6rem, 4.6vw, 2.3rem); }
.cta-final p { margin: 14px 0 28px; color: #b9cbc4; font-size: 1.05rem; }

/* ----- Footer ----- */
.site-footer {
  background: var(--ink-900); color: #9db2ab; padding: 66px 0 26px;
  border-top: 1px solid rgba(47, 211, 155, .18);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .03);
}
.site-footer__inner { display: grid; gap: 40px; }
.site-footer__brand p { margin-top: 14px; font-size: 14px; line-height: 1.65; max-width: 34em; }
.site-footer__mail {
  display: inline-block; margin-top: 14px; font-size: 14px; font-weight: 600;
  color: #cfe0da; border-bottom: 1px solid rgba(255, 255, 255, .2); padding-bottom: 1px;
}
.site-footer__mail:hover { color: #fff; border-color: var(--green-300); }
.site-footer__social { display: flex; gap: 10px; margin-top: 20px; }
.site-footer__social a {
  width: 38px; height: 38px; border-radius: 10px;
  display: grid; place-items: center; color: #b9cbc4;
  background: rgba(255, 255, 255, .05); border: 1px solid rgba(255, 255, 255, .08);
  transition: transform .15s var(--ease), background .15s var(--ease), color .15s var(--ease);
}
.site-footer__social a:hover { color: #fff; background: rgba(47, 211, 155, .16); border-color: rgba(47, 211, 155, .3); transform: translateY(-2px); }

.site-footer__nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 24px; }
.site-footer__nav h3 { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: #6d827b; margin-bottom: 12px; font-weight: 700; }
.site-footer__nav a { display: block; padding: 6px 0; font-size: 14px; color: #b9cbc4; transition: color .13s var(--ease); }
.site-footer__nav a:hover { color: #fff; }
.site-footer__bottom {
  margin-top: 44px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.08);
  display: flex; flex-direction: column; gap: 8px; font-size: 12.5px; color: #6d827b;
}

/* ----- Reveal on scroll ----- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ==========================================================================
   Tablet
   ========================================================================== */
@media (min-width: 640px) {
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .use-cases { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-footer__nav { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .site-footer__bottom { flex-direction: row; justify-content: space-between; }
  .hero__badge--1 { left: -20px; }
  .hero__badge--2 { right: -20px; }
}

@media (min-width: 900px) {
  .site-footer__inner { grid-template-columns: minmax(0, 1.5fr) minmax(0, 3fr); gap: 56px; align-items: start; }
  .site-footer__nav { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* ==========================================================================
   Desktop
   ========================================================================== */
@media (min-width: 960px) {
  :root { --header-h: 72px; --gutter: 28px; }
  .brand__icon { width: 32px; height: 32px; }
  .brand__name { font-size: 18px; }
  .hero { padding-top: 84px; }
  .hero__grid { grid-template-columns: minmax(0,1.05fr) minmax(0,.95fr); align-items: center; gap: 56px; }
  .hero__visual { padding-bottom: 0; }
  .chat { margin: 0; max-width: 440px; }
  .features { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .use-cases { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .price-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: stretch; }
  .price-card--featured { transform: translateY(-8px); }
  .split { grid-template-columns: minmax(0,1fr) minmax(0,1.1fr); gap: 56px; }
  .split--reverse .split__media { order: 2; }
  .section { padding: 92px 0; }
}

/* ==========================================================================
   Desktop grande (monitor externo)
   ========================================================================== */
@media (min-width: 1280px) {
  :root { --header-h: 80px; --maxw: 1280px; --gutter: 36px; }

  .brand { gap: 13px; }
  .brand__icon { width: 36px; height: 36px; }
  .brand__name { font-size: 20px; }
  .brand__tagline { font-size: 9.5px; letter-spacing: .17em; margin-top: 4px; }
  .header__inner { gap: 40px; }
  .nav__menu { gap: 6px; }
  .nav__menu > li > a:not(.btn) { font-size: 15.5px; padding: 9px 14px; }
  .header__actions { gap: 12px; }
  .btn--sm { padding: 11px 20px; font-size: 14.5px; }

  .hero { padding-top: 112px; }
  .hero__grid { gap: 80px; align-items: center; }
  .hero__eyebrow { font-size: 14px; padding: 7px 15px; margin-bottom: 22px; }
  .hero__title { font-size: clamp(3.5rem, 2.4vw + 1.7rem, 4.6rem); line-height: 1.04; letter-spacing: -.03em; }
  .hero__sub { margin-top: 22px; font-size: 1.24rem; max-width: 30em; line-height: 1.6; }
  .hero__actions { gap: 14px; margin-top: 36px; }
  .btn--lg { padding: 17px 32px; font-size: 16.5px; }
  .hero__points { font-size: 14.5px; gap: 18px 26px; margin-top: 30px; }
  .chat { max-width: 480px; }
  .chat__body { min-height: 372px; }
  .hero__badge { font-size: 13.5px; padding: 9px 15px; }

  .marquee { margin-top: 60px; padding: 22px 0; }
  .marquee__track span { font-size: 15px; }

  .section { padding: 116px 0; }
  .section--tight { padding: 72px 0; }
  .section__head { max-width: 680px; margin-bottom: 60px; }
  .section__title { font-size: clamp(2.4rem, 1.6vw + 1.4rem, 2.9rem); }
  .section__lead { font-size: 1.13rem; margin-top: 16px; }
  .cta-final { padding: 96px 0; }
}

/* Pantallas muy anchas (≥ 27") */
@media (min-width: 1680px) {
  :root { --header-h: 88px; --maxw: 1360px; --gutter: 48px; }
  .brand__icon { width: 38px; height: 38px; }
  .brand__name { font-size: 21px; }
  .hero { padding-top: 140px; }
  .hero__grid { gap: 96px; }
  .hero__sub { font-size: 1.32rem; }
  .chat { max-width: 508px; }
  .section { padding: 132px 0; }
}

/* ==========================================================================
   Menú móvil
   ========================================================================== */
@media (max-width: 900px) {
  .header__actions { display: none; }
  .nav__toggle {
    display: flex; flex-direction: column; justify-content: center; gap: 5px;
    width: 42px; height: 42px; border-radius: 10px; padding: 0 10px;
  }
  .nav__toggle span { display: block; height: 2px; width: 100%; background: var(--text); border-radius: 2px; transition: transform .2s var(--ease), opacity .2s var(--ease); }
  .nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .nav__menu {
    position: fixed; inset: var(--header-h) 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 4px;
    background: #fff; border-bottom: 1px solid var(--border);
    padding: 14px 20px 22px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: transform .2s var(--ease), opacity .2s var(--ease);
    max-height: calc(100vh - var(--header-h)); overflow-y: auto;
  }
  .nav__menu.is-open { transform: none; opacity: 1; pointer-events: auto; }
  .nav__menu > li > a:not(.btn) { padding: 12px; font-size: 15px; }
  .nav__cta-mobile { display: block; margin-top: 6px; }
  .nav__cta-mobile .btn { width: 100%; }
}