/* =========================================================================
   F4st.ai — Sistema de diseño de marca (Build & Operate)
   Fuente de verdad: f4st-brand-guide.html + f4st-brand-kit/
   Paleta: naranja #FF8C00 · rojo #E63946 · ámbar #FFB347 · negro #0F0F0F
   Tipografía: Outfit (display) · Space Mono (data) · DM Sans (body)
   ========================================================================= */

:root {
  /* Marca */
  --orange: #FF8C00;
  --red: #E63946;
  --amber: #FFB347;
  --black: #0F0F0F;
  --surface: #161616;
  --surface-2: #1A1A1A;
  --ink: #1A1A2E;
  --white: #FFFFFF;

  /* Texto sobre oscuro */
  --t-bright: #F5F5F5;
  --t-soft: #C4C4C4;
  --t-mute: #9A9A9A;   /* ~5.8:1 sobre #0F0F0F (WCAG AA texto normal) */
  --t-faint: #7C7C7C;  /* ~4.2:1 — placeholders y texto de apoyo (antes #5A5A5A fallaba AA) */

  /* Líneas */
  --line: rgba(255,255,255,.08);
  --line-warm: rgba(255,140,0,.18);

  /* Gradientes aprobados */
  --grad-principal: linear-gradient(135deg, #FF8C00, #E63946);
  --grad-emergent: linear-gradient(135deg, #0F0F0F, #FF8C00);
  --grad-energy: linear-gradient(120deg, #E63946 0%, #FF8C00 52%, #FFB347 100%);
  --grad-hairline: linear-gradient(90deg, transparent, rgba(255,140,0,.45), rgba(230,57,70,.35), transparent);

  --whatsapp: #25D366;

  /* Forma */
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-pill: 999px;

  /* Tipos */
  --f-display: 'Outfit', sans-serif;
  --f-mono: 'Space Mono', monospace;
  --f-body: 'DM Sans', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--f-body);
  background: var(--black);
  color: var(--t-bright);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
::selection { background: rgba(255,140,0,.28); color: #fff; }
a { color: inherit; }
img { max-width: 100%; display: block; }

/* Atmósfera de marca: glow naranja en el documento */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(820px 520px at 82% -8%, rgba(255,140,0,.10), transparent 60%),
    radial-gradient(680px 520px at -10% 12%, rgba(230,57,70,.07), transparent 60%);
}
main, .nav, footer { position: relative; z-index: 1; }

.container { width: min(1140px, 92vw); margin-inline: auto; }

/* ---------- Motion ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .6s cubic-bezier(.2,.7,.2,1), transform .6s cubic-bezier(.2,.7,.2,1);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }
.stagger-1 { transition-delay: .06s; }
.stagger-2 { transition-delay: .12s; }
.stagger-3 { transition-delay: .18s; }
.stagger-4 { transition-delay: .24s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Tipografía utilitaria ---------- */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--f-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--orange);
}
.kicker .idx { color: var(--red); }
.kicker::after {
  content: "";
  width: 26px; height: 1px;
  background: linear-gradient(90deg, rgba(255,140,0,.6), transparent);
}
.grad-text {
  background: var(--grad-energy);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hairline {
  height: 1px;
  background: var(--grad-hairline);
  border: 0;
  margin: 0;
}

h1, h2, h3 { font-family: var(--f-display); letter-spacing: -.025em; }
h2 { font-size: clamp(1.75rem, 3.4vw, 2.7rem); line-height: 1.08; margin: .55rem 0 .7rem; }
.lead { color: var(--t-soft); max-width: 720px; font-size: 1.04rem; }

/* ---------- NAV ---------- */
.nav {
  position: fixed; top: 0; width: 100%; z-index: 50;
  background: rgba(15,15,15,.62);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(10px);
  transition: background .25s ease, border-color .25s ease, backdrop-filter .25s ease;
}
.nav.scrolled {
  background: rgba(15,15,15,.9);
  border-bottom-color: var(--line-warm);
  backdrop-filter: blur(16px);
}
.nav-inner { height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: inline-flex; align-items: center; }
.brand img { height: 26px; width: auto; }
.nav-links { display: flex; gap: 22px; }
.nav-links a {
  color: var(--t-soft); text-decoration: none;
  font-family: var(--f-mono);
  font-size: .76rem; letter-spacing: .06em; text-transform: uppercase;
  position: relative; transition: color .2s ease; padding: 4px 0;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -2px;
  width: 100%; height: 1.5px; background: var(--grad-principal);
  transform: scaleX(0); transform-origin: left; transition: transform .22s ease;
}
.nav-links a:hover { color: var(--white); }
.nav-links a:hover::after { transform: scaleX(1); }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  border-radius: var(--r-sm); padding: .9rem 1.25rem;
  text-decoration: none; font-family: var(--f-display); font-weight: 700; font-size: .95rem;
  border: 1px solid transparent; cursor: pointer;
  transition: transform .2s ease, box-shadow .25s ease, background .2s ease, border-color .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-primary {
  background: var(--grad-principal); color: #fff;
  box-shadow: 0 10px 28px rgba(255,140,0,.20);
}
.btn-primary:hover { box-shadow: 0 16px 36px rgba(230,57,70,.26); }
.btn-ghost {
  border-color: rgba(255,255,255,.16); color: var(--white);
  background: rgba(255,255,255,.02);
}
.btn-ghost:hover { border-color: var(--line-warm); background: rgba(255,140,0,.06); }
.cta-nav {
  background: rgba(255,140,0,.10); border: 1px solid rgba(255,140,0,.35);
  color: var(--orange); border-radius: var(--r-pill);
  padding: .58rem 1.05rem; text-decoration: none;
  font-family: var(--f-display); font-weight: 700; font-size: .85rem;
  transition: background .2s ease, border-color .2s ease;
}
.cta-nav:hover { background: rgba(255,140,0,.18); border-color: rgba(255,140,0,.6); }
.btn-wa {
  background: rgba(37,211,102,.12); border: 1px solid rgba(37,211,102,.32);
  color: var(--whatsapp); border-radius: var(--r-sm);
  padding: .9rem 1.25rem; text-decoration: none;
  font-family: var(--f-display); font-weight: 700; font-size: .95rem;
  display: inline-flex; align-items: center; gap: .5rem;
  transition: background .2s ease, border-color .2s ease, transform .2s ease;
}
.btn-wa:hover { background: rgba(37,211,102,.2); border-color: rgba(37,211,102,.55); transform: translateY(-2px); }

/* ---------- Hamburger / Mobile menu ---------- */
.hamburger {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 6px; z-index: 60;
}
.hamburger span { display: block; width: 24px; height: 2px; background: var(--white); border-radius: 2px; transition: transform .3s ease, opacity .3s ease; }
.hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-menu {
  position: fixed; top: 72px; left: 0; right: 0; z-index: 49;
  background: rgba(12,12,12,.98); backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line-warm);
  flex-direction: column; padding: 1.1rem 6vw 1.8rem; gap: .1rem;
  transform: translateY(-8px); opacity: 0; transition: opacity .25s ease, transform .25s ease;
  pointer-events: none; display: none;
}
.mobile-menu.is-open { display: flex; opacity: 1; transform: none; pointer-events: all; }
.mobile-menu a {
  color: var(--t-soft); text-decoration: none; font-size: 1.02rem;
  padding: .8rem 0; border-bottom: 1px solid rgba(255,255,255,.05);
  font-family: var(--f-mono); letter-spacing: .04em;
}
.mobile-menu a:hover { color: var(--orange); }
.mobile-menu a.mobile-cta {
  margin-top: 1rem !important; border-bottom: none !important; text-align: center;
  color: #fff; font-family: var(--f-display); letter-spacing: -.01em; justify-content: center;
}

/* ---------- HERO ---------- */
.hero { position: relative; padding: 150px 0 92px; overflow: hidden; }
.hero-glow {
  position: absolute; border-radius: 50%; pointer-events: none; filter: blur(8px); z-index: -1;
}
.hero-glow.a { width: 560px; height: 560px; top: -240px; right: -180px; background: radial-gradient(circle, rgba(255,140,0,.22), transparent 68%); }
.hero-glow.b { width: 480px; height: 480px; bottom: -280px; left: -160px; background: radial-gradient(circle, rgba(230,57,70,.16), transparent 68%); }
.hero h1 {
  font-size: clamp(2.3rem, 5.6vw, 4.15rem);
  line-height: 1.02; margin: 1.1rem 0 1.1rem; max-width: 16ch; font-weight: 800;
}
.hero .sub { color: var(--t-soft); font-size: clamp(1.02rem, 1.7vw, 1.22rem); max-width: 60ch; }
.hero-cta { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.8rem; }

/* Proof strip */
.proof {
  display: flex; flex-wrap: wrap; gap: 0; margin-top: 2.6rem;
  border: 1px solid var(--line); border-radius: var(--r-md);
  background: rgba(255,255,255,.015); overflow: hidden; max-width: 880px;
}
.proof-item { flex: 1; min-width: 180px; padding: 1.15rem 1.3rem; border-right: 1px solid var(--line); }
.proof-item:last-child { border-right: none; }
.proof-num { font-family: var(--f-display); font-weight: 800; font-size: 1.7rem; letter-spacing: -.02em; color: var(--orange); }
.proof-num .unit { font-size: 1rem; color: var(--amber); }
.proof-label { font-family: var(--f-mono); font-size: .76rem; line-height: 1.5; letter-spacing: .03em; text-transform: uppercase; color: var(--t-mute); margin-top: .4rem; }

/* ---------- Secciones ---------- */
section { padding: 84px 0; position: relative; }
.sec-head { max-width: 760px; }

/* ---------- Casos en producción ---------- */
.cases { margin-top: 2rem; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; }
.case {
  position: relative; border: 1px solid var(--line); border-radius: var(--r-md);
  background: linear-gradient(180deg, var(--surface-2), #131313);
  padding: 1.4rem 1.3rem; display: flex; flex-direction: column; gap: .7rem;
  transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.case:hover { transform: translateY(-3px); border-color: var(--line-warm); box-shadow: 0 16px 34px rgba(0,0,0,.35); }
.pill {
  align-self: flex-start; display: inline-flex; align-items: center; gap: .4rem;
  font-family: var(--f-mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--amber); background: rgba(255,140,0,.10);
  border: 1px solid rgba(255,140,0,.28); border-radius: var(--r-pill); padding: .3rem .65rem;
}
.pill::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--red); box-shadow: 0 0 0 0 rgba(230,57,70,.5); animation: pulse 2.4s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(230,57,70,.45); } 70% { box-shadow: 0 0 0 7px rgba(230,57,70,0); } 100% { box-shadow: 0 0 0 0 rgba(230,57,70,0); } }
.case-vertical { font-family: var(--f-mono); font-size: .72rem; letter-spacing: .04em; color: var(--t-mute); text-transform: uppercase; }
.case h3 { margin: 0; font-size: 1.18rem; font-weight: 700; }
.case p { margin: 0; color: var(--t-soft); font-size: .95rem; }
.case-metric {
  margin-top: auto; padding-top: .9rem; border-top: 1px solid var(--line);
  font-family: var(--f-mono); font-size: .78rem; color: var(--t-soft);
}
.case-metric b { color: var(--orange); font-weight: 700; }
.cases-note { margin-top: 1.2rem; font-family: var(--f-mono); font-size: .78rem; color: var(--t-mute); }
.cases-note b { color: var(--t-soft); font-weight: 400; }

/* ---------- Testimonios ---------- */
.testi-head { display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; }
.draft-pill {
  font-family: var(--f-mono); font-size: .6rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--amber); border: 1px dashed rgba(255,140,0,.45); border-radius: var(--r-pill); padding: .25rem .6rem;
}
.testimonials { margin-top: 2rem; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; }
.quote-card {
  border: 1px solid var(--line); border-radius: var(--r-md);
  background: linear-gradient(180deg, var(--surface-2), #131313);
  padding: 1.5rem 1.4rem; display: flex; flex-direction: column; gap: .9rem;
}
.quote-card .mark { font-family: var(--f-display); font-weight: 900; font-size: 2.6rem; line-height: .4; color: var(--orange); height: 1rem; }
.quote-card blockquote { margin: 0; color: var(--t-bright); font-size: 1rem; line-height: 1.55; }
.quote-card .who { margin-top: auto; padding-top: .9rem; border-top: 1px solid var(--line); display: flex; flex-direction: column; gap: .12rem; }
.quote-card .who .name { font-family: var(--f-display); font-weight: 700; font-size: .95rem; }
.quote-card .who .meta { font-family: var(--f-mono); font-size: .74rem; color: var(--t-mute); }
.quote-card.placeholder { border-style: dashed; border-color: rgba(255,140,0,.25); }
.quote-card.placeholder blockquote { color: var(--t-faint); font-style: italic; }
.testi-note { margin-top: 1.2rem; font-family: var(--f-mono); font-size: .78rem; color: var(--t-mute); }

/* ---------- ¿Te suena? ---------- */
.suena-grid { margin-top: 2rem; display: grid; grid-template-columns: 1.1fr .9fr; gap: 2.4rem; align-items: start; }
.pain-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .85rem; }
.pain-list li { display: flex; gap: .8rem; align-items: flex-start; color: var(--t-soft); font-size: 1.02rem; }
.pain-list li::before {
  content: "✕"; color: var(--red); font-weight: 700; font-size: .9rem;
  margin-top: .18rem; flex-shrink: 0;
  width: 22px; height: 22px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid rgba(230,57,70,.3); border-radius: 6px; background: rgba(230,57,70,.07);
}
.verticals { border: 1px solid var(--line); border-radius: var(--r-md); padding: 1.3rem; background: rgba(255,255,255,.015); }
.verticals-title { font-family: var(--f-mono); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; color: var(--t-mute); margin-bottom: .9rem; }
.tags { display: flex; flex-wrap: wrap; gap: .5rem; }
.tag {
  font-family: var(--f-mono); font-size: .76rem; color: var(--t-soft);
  border: 1px solid var(--line); border-radius: var(--r-pill); padding: .4rem .8rem;
  transition: border-color .2s ease, color .2s ease;
}
.tag:hover { border-color: var(--line-warm); color: var(--white); }
.verticals-foot { margin-top: 1.1rem; padding-top: 1.1rem; border-top: 1px solid var(--line); color: var(--t-soft); font-size: .92rem; }

/* ---------- Sistemas ---------- */
.systems { margin-top: 2rem; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; }
.system {
  border: 1px solid var(--line); border-radius: var(--r-md);
  background: linear-gradient(180deg, var(--surface-2), #131313);
  padding: 1.5rem 1.35rem; display: flex; flex-direction: column; gap: .7rem;
  transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.system:hover { transform: translateY(-3px); border-color: var(--line-warm); box-shadow: 0 16px 34px rgba(0,0,0,.35); }
.system-icon {
  width: 46px; height: 46px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
  background: rgba(255,140,0,.08); border: 1px solid rgba(255,140,0,.22); color: var(--orange);
}
.system-icon svg { width: 24px; height: 24px; }
.system h3 { margin: 0; font-size: 1.18rem; font-weight: 700; }
.system p { margin: 0; color: var(--t-soft); font-size: .95rem; }
.system-foot {
  margin-top: auto; padding-top: .9rem; border-top: 1px solid var(--line);
  font-family: var(--f-mono); font-size: .73rem; letter-spacing: .02em; color: var(--t-mute);
}
.system-foot b { color: var(--orange); font-weight: 400; }
.systems-note { margin-top: 1.2rem; color: var(--t-mute); font-size: .92rem; }
.systems-note a { color: var(--orange); text-decoration: none; border-bottom: 1px solid rgba(255,140,0,.35); }

/* ---------- Cómo funciona (steps) ---------- */
.steps { margin-top: 2rem; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.1rem; }
.step { gap: .55rem; }
.step .step-idx { font-family: var(--f-mono); font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; color: var(--red); }
.step .system-icon { margin-top: .15rem; }

/* ---------- Soberanía de datos ---------- */
.sov-grid { margin-top: 2rem; display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.sov-card { border: 1px solid var(--line); border-radius: var(--r-md); padding: 1.5rem 1.4rem; background: rgba(255,255,255,.015); }
.sov-card.yes { border-color: rgba(255,140,0,.22); background: linear-gradient(180deg, rgba(255,140,0,.05), rgba(255,140,0,.01)); }
.sov-title { font-family: var(--f-mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 1.1rem; }
.sov-card.no .sov-title { color: var(--red); }
.sov-card.yes .sov-title { color: var(--orange); }
.sov-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .8rem; }
.sov-list li { display: flex; gap: .7rem; align-items: flex-start; color: var(--t-soft); font-size: .98rem; }
.sov-list li::before {
  flex-shrink: 0; width: 22px; height: 22px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 6px; font-size: .82rem; font-weight: 700; margin-top: .1rem;
}
.sov-card.no .sov-list li::before { content: "✕"; color: var(--red); border: 1px solid rgba(230,57,70,.3); background: rgba(230,57,70,.07); }
.sov-card.yes .sov-list li::before { content: "✓"; color: #8ef0b0; border: 1px solid rgba(37,211,102,.3); background: rgba(37,211,102,.07); }

/* ---------- Modelo Build & Operate ---------- */
.phases { margin-top: 2rem; display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.phase {
  border: 1px solid var(--line); border-radius: var(--r-md); padding: 1.5rem 1.4rem;
  background: rgba(255,255,255,.015); position: relative;
}
.phase.operate { border-color: rgba(255,140,0,.22); background: linear-gradient(180deg, rgba(255,140,0,.05), rgba(255,140,0,.01)); }
.phase-tag { font-family: var(--f-mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--red); }
.phase.operate .phase-tag { color: var(--orange); }
.phase h3 { margin: .5rem 0 .3rem; font-size: 1.3rem; font-weight: 700; }
.phase .when { font-family: var(--f-mono); font-size: .8rem; color: var(--t-mute); margin-bottom: 1rem; }
.phase-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .65rem; }
.phase-list li { display: flex; gap: .65rem; align-items: flex-start; color: var(--t-soft); font-size: .95rem; }
.phase-list li::before { content: ""; width: 7px; height: 7px; border-radius: 2px; background: var(--grad-principal); margin-top: .5rem; flex-shrink: 0; }
.phase.operate .phase-list li::before { background: var(--orange); }

.pricing {
  margin-top: 1.1rem; border: 1px solid var(--line-warm); border-radius: var(--r-md);
  padding: 1.4rem 1.5rem; background: rgba(255,255,255,.015);
  display: flex; flex-wrap: wrap; align-items: center; gap: 1.2rem 2rem;
}
.pricing-structure { display: flex; flex-wrap: wrap; gap: 1.2rem 2rem; flex: 1; min-width: 260px; }
.price-item { display: flex; flex-direction: column; gap: .15rem; }
.price-k { font-family: var(--f-mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: var(--t-mute); }
.price-v { font-family: var(--f-display); font-weight: 700; font-size: 1.05rem; color: var(--white); }
.price-plus { font-family: var(--f-display); font-weight: 800; font-size: 1.4rem; color: var(--orange); align-self: center; }
.pricing-note { flex-basis: 100%; color: var(--t-soft); font-size: .92rem; margin: 0; }
.own-line {
  margin-top: 1.4rem; font-family: var(--f-display); font-weight: 700;
  font-size: clamp(1.05rem, 2vw, 1.35rem); color: var(--t-bright); max-width: 760px;
}
.own-line .grad-text { font-weight: 800; }
.model-cta { margin-top: 1.6rem; }

/* ---------- Sobre + FAQ ---------- */
.about-grid { margin-top: 1.4rem; display: grid; grid-template-columns: 360px 1fr; gap: 2.2rem; align-items: start; }
.founder {
  border: 1px solid var(--line); border-radius: var(--r-md); padding: 1.5rem;
  background: linear-gradient(180deg, var(--surface-2), #131313);
}
.founder-top { display: flex; align-items: center; gap: 1rem; }
.founder-avatar {
  width: 60px; height: 60px; border-radius: 50%; flex-shrink: 0; overflow: hidden;
  background: var(--grad-principal); display: flex; align-items: center; justify-content: center;
  font-family: var(--f-display); font-weight: 900; font-size: 1.5rem; color: #fff;
}
.founder-avatar img { width: 100%; height: 100%; object-fit: cover; }
.founder-name { font-family: var(--f-display); font-weight: 700; font-size: 1.1rem; }
.founder-role { color: var(--orange); font-size: .85rem; font-family: var(--f-mono); }
.founder-loc { color: var(--t-mute); font-size: .8rem; font-family: var(--f-mono); margin-top: .15rem; }
.founder-bio { color: var(--t-soft); font-size: .95rem; margin: 1rem 0; }
.founder-link { display: inline-flex; align-items: center; gap: .45rem; color: var(--orange); text-decoration: none; font-size: .88rem; font-weight: 600; }
.founder-link:hover { opacity: .8; }

.faq { display: grid; gap: .7rem; }
.faq details { border: 1px solid var(--line); border-radius: var(--r-sm); background: rgba(255,255,255,.015); transition: border-color .2s ease; }
.faq details[open] { border-color: var(--line-warm); }
.faq summary {
  cursor: pointer; font-family: var(--f-display); font-weight: 700; font-size: 1rem;
  padding: 1rem 1.1rem; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--orange); font-size: 1.4rem; font-weight: 400; transition: transform .2s ease; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { color: var(--t-soft); margin: 0; padding: 0 1.1rem 1.1rem; font-size: .95rem; }

/* ---------- Contacto ---------- */
.contact-grid { margin-top: 1.6rem; display: grid; grid-template-columns: 1.25fr .75fr; gap: 1.4rem; align-items: start; }
.form-card, .contact-side {
  border: 1px solid var(--line); border-radius: var(--r-md); padding: 1.6rem;
  background: linear-gradient(180deg, var(--surface-2), #131313);
}
/* Form en una sola columna — NN/g/Baymard: 78% completan al 1er intento vs 42% multi-col; +15.2% conversión B2B */
.form-grid { display: grid; grid-template-columns: 1fr; gap: 1rem; }
.field { display: flex; flex-direction: column; gap: .35rem; }
.field.full { grid-column: 1 / -1; }
.field label { font-family: var(--f-mono); font-size: .76rem; letter-spacing: .05em; text-transform: uppercase; color: var(--t-mute); }
.field label .req { color: var(--red); }
.input, textarea, select {
  width: 100%; background: #101010; color: var(--white);
  border: 1px solid rgba(255,255,255,.12); border-radius: var(--r-sm);
  padding: .82rem .9rem; font: inherit; font-size: .95rem;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.input::placeholder, textarea::placeholder { color: var(--t-faint); }
.input:focus, textarea:focus, select:focus {
  outline: none; border-color: rgba(255,140,0,.55); box-shadow: 0 0 0 3px rgba(255,140,0,.14);
}
select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23FF8C00' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right .9rem center; padding-right: 2.2rem; }
textarea { min-height: 110px; resize: vertical; }
.consent { display: flex; gap: .6rem; align-items: flex-start; font-size: .82rem; color: var(--t-mute); }
.consent input { width: 16px; height: 16px; margin-top: .15rem; accent-color: var(--orange); flex-shrink: 0; }
.consent a { color: var(--orange); }
.form-foot { display: flex; flex-direction: column; gap: .5rem; margin-top: .3rem; }
.note { color: var(--t-mute); font-size: .82rem; font-family: var(--f-mono); }
.form-msg { font-size: .9rem; color: var(--amber); display: none; padding: .6rem .8rem; border: 1px solid var(--line-warm); border-radius: var(--r-sm); background: rgba(255,140,0,.05); }
.form-msg.show { display: block; }
.form-msg.ok { color: #8ef0b0; border-color: rgba(37,211,102,.3); background: rgba(37,211,102,.06); }

.contact-side h3 { font-family: var(--f-display); font-size: 1.15rem; margin: 0 0 .3rem; }
.contact-side p { color: var(--t-soft); font-size: .92rem; margin: 0 0 1.1rem; }
.contact-side .btn-wa { width: 100%; justify-content: center; margin-bottom: 1rem; }
.contact-line { display: flex; align-items: center; gap: .6rem; color: var(--t-soft); font-size: .9rem; padding: .6rem 0; border-top: 1px solid var(--line); }
.contact-line svg { width: 16px; height: 16px; color: var(--orange); flex-shrink: 0; }
.contact-line a { color: var(--t-soft); text-decoration: none; }
.contact-line a:hover { color: var(--orange); }

/* ---------- CTA bands entre secciones ---------- */
.cta-band {
  width: min(1140px, 92vw); margin: 0 auto; padding: 1.35rem 1.6rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1.1rem; flex-wrap: wrap;
  border: 1px solid var(--line-warm); border-radius: var(--r-md);
  background: linear-gradient(100deg, rgba(255,140,0,.08), rgba(230,57,70,.05));
  position: relative; overflow: hidden;
}
.cta-band::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(440px 130px at 0% 50%, rgba(255,140,0,.14), transparent 70%);
}
.cta-band-text {
  font-family: var(--f-display); font-weight: 700; font-size: clamp(1.02rem, 1.9vw, 1.28rem);
  color: var(--t-bright); letter-spacing: -.01em; position: relative; margin: 0;
}
.cta-band .btn { white-space: nowrap; position: relative; }
@media (max-width: 560px) {
  .cta-band { flex-direction: column; align-items: flex-start; gap: .9rem; }
  .cta-band .btn { width: 100%; }
}

/* ---------- Botón de agenda directa (junto al formulario) ---------- */
.booking-direct { width: 100%; justify-content: center; margin-bottom: 1rem; }
.form-divider { display: flex; align-items: center; gap: .8rem; color: var(--t-mute); font-family: var(--f-mono); font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 1.1rem; }
.form-divider::before, .form-divider::after { content: ""; flex: 1; height: 1px; background: var(--line); }

/* ---------- WhatsApp float ---------- */
.whatsapp-float {
  position: fixed; bottom: 26px; right: 26px; z-index: 45;
  width: 54px; height: 54px; border-radius: 50%; background: var(--whatsapp);
  display: flex; align-items: center; justify-content: center; color: #fff; text-decoration: none;
  box-shadow: 0 8px 24px rgba(37,211,102,.4); transition: transform .2s ease, box-shadow .2s ease;
}
.whatsapp-float:hover { transform: scale(1.08); box-shadow: 0 12px 30px rgba(37,211,102,.5); }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--line); padding: 48px 0 56px; }
.footer-inner { display: flex; justify-content: space-between; align-items: flex-start; gap: 2rem; flex-wrap: wrap; }
.footer-brand img { height: 24px; margin-bottom: .7rem; }
.footer-tag { color: var(--t-mute); font-family: var(--f-mono); font-size: .8rem; max-width: 280px; }
.footer-copy { color: var(--t-faint); margin-top: .5rem; font-size: .78rem; }
.footer-right { display: flex; flex-direction: column; align-items: flex-end; gap: .7rem; }
.footer-link { color: var(--t-soft); text-decoration: none; font-size: .9rem; }
.footer-link:hover { color: var(--orange); }
.footer-social { display: flex; gap: .8rem; margin-top: .2rem; }
.footer-social a { color: var(--t-mute); transition: color .2s ease; }
.footer-social a:hover { color: var(--orange); }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .nav-links, .nav .cta-nav { display: none; }
  .hamburger { display: flex; }
  .cases, .systems, .phases, .testimonials { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .sov-grid, .suena-grid, .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 1.6rem; }
  .footer-inner { flex-direction: column; }
  .footer-right { align-items: flex-start; }
}
@media (max-width: 560px) {
  .hero { padding: 124px 0 72px; }
  .steps { grid-template-columns: 1fr; }
  .proof-item { flex-basis: 100%; min-width: 100%; border-right: none; border-bottom: 1px solid var(--line); }
  .proof-item:last-child { border-bottom: none; }
  .form-grid { grid-template-columns: 1fr; }
  .pricing { flex-direction: column; align-items: flex-start; }
  .price-plus { display: none; }
  .whatsapp-float { bottom: 18px; right: 18px; width: 48px; height: 48px; }
}