/* SynapsisLabs — Sitio web
   Sistema: 80% blanco/menta · 15% carbón · 5% petróleo */

:root {
  --petroleo: #1B4D4A;
  --petroleo-med: #2E7068;
  --petroleo-clr: #4A9990;
  --menta: #EBF2F1;
  --menta-strong: #DDEAE8;
  --carbon: #1A1A1A;
  --carbon-soft: #2A2A2A;
  --blanco: #FFFFFF;
  --gris-bg: #F7F9F8;
  --gris-borde: #DDE4E2;
  --gris-borde-soft: #E8EDEC;
  --gris-texto: #5A7874;
  --gris-muted: #8AA8A4;

  --container: 1240px;
  --pad: 32px;
  --radius: 8px;

  --t-hero: clamp(56px, 8vw, 112px);
  --t-h1: clamp(36px, 4.4vw, 56px);
  --t-h2: clamp(24px, 2.4vw, 32px);
  --t-h3: 20px;
  --t-body: 16px;
  --t-small: 13px;
  --t-caps: 11px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  background: var(--blanco);
  color: var(--carbon);
  font-size: var(--t-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv11";
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: none; }
img, svg { display: block; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.caps {
  font-size: var(--t-caps);
  font-weight: 500;
  letter-spacing: 3.5px;
  text-transform: uppercase;
  color: var(--gris-muted);
}

.mono {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-feature-settings: "ss02", "cv11";
}

/* ─────────────────────── NAV ─────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 0.5px solid transparent;
  transition: border-color .2s ease, background .2s ease;
}
.nav.scrolled {
  border-bottom-color: var(--gris-borde);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  letter-spacing: -0.3px;
}
.nav-logo .w1 { font-weight: 200; }
.nav-logo .w2 { font-weight: 600; color: var(--petroleo); letter-spacing: 1.2px; }
.nav-logo svg { width: 28px; height: 28px; }

.nav-links {
  display: flex;
  gap: 36px;
  align-items: center;
}
.nav-links a {
  font-size: 14px;
  color: var(--carbon);
  position: relative;
  padding: 4px 0;
  transition: color .15s ease;
}
.nav-links a:hover { color: var(--petroleo); }
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; right: 100%;
  bottom: -2px;
  height: 1px;
  background: var(--petroleo);
  transition: right .25s cubic-bezier(.4,0,.2,1);
}
.nav-links a:hover::after { right: 0; }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--carbon);
  color: var(--blanco);
  font-size: 13px;
  font-weight: 500;
  border-radius: 6px;
  transition: background .15s ease, transform .15s ease;
}
.nav-cta:hover { background: var(--petroleo); }
.nav-cta .arrow { font-size: 12px; transition: transform .2s ease; }
.nav-cta:hover .arrow { transform: translateX(3px); }

@media (max-width: 820px) {
  .nav-links { display: none; }
  .arrow { display: none; }
}

/* ─────────────────────── HERO ─────────────────────── */
.hero {
  padding: 168px 0 120px;
  position: relative;
  overflow: hidden;
}
.hero-bg-mark {
  position: relative;
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1 / 1;
  opacity: 0.82;
  pointer-events: none;
  z-index: 1;
  margin: 0 auto;
}
.hero-bg-mark svg { width: 100%; height: 100%; overflow: visible; }
.hero-bg-mark .orbit-ring {
  transform-box: fill-box;
  transform-origin: center;
  animation: hero-orbit-ccw 18s linear infinite;
}
.hero-bg-mark .breathe-wrap {
  transform-box: fill-box;
  transform-origin: center;
  animation: hero-breathe 5s ease-in-out infinite;
}
.hero-bg-mark .symbol-body {
  transform-box: fill-box;
  transform-origin: center;
  animation: hero-orbit-cw 70s linear infinite;
}
@keyframes hero-orbit-cw {
  to { transform: rotate(360deg); }
}
@keyframes hero-orbit-ccw {
  to { transform: rotate(-360deg); }
}
@keyframes hero-breathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}
.hero-inner { position: relative; z-index: 1; }
@media (max-width: 960px) {
  .hero-bg-mark { max-width: 300px; opacity: 0.65; }
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 80px;
  align-items: center;
}
.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 40px;
}
.hero-eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--petroleo-clr);
  box-shadow: 0 0 0 4px rgba(74,153,144,0.18);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(74,153,144,0.18); }
  50% { box-shadow: 0 0 0 7px rgba(74,153,144,0.05); }
}
.hero-title {
  font-size: var(--t-hero);
  font-weight: 200;
  line-height: 0.98;
  letter-spacing: -3px;
  color: var(--carbon);
  margin-bottom: 32px;
}
.hero-title em {
  font-style: normal;
  font-weight: 300;
  color: var(--petroleo);
}
.hero-title .accent {
  display: inline-block;
  background: linear-gradient(180deg, transparent 62%, rgba(74,153,144,0.18) 62%);
  padding: 0 4px;
}
.hero-lead {
  font-size: 19px;
  line-height: 1.55;
  color: var(--gris-texto);
  max-width: 540px;
  margin-bottom: 44px;
}
.hero-lead strong {
  color: var(--carbon);
  font-weight: 500;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 24px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 6px;
  transition: all .18s ease;
  cursor: pointer;
}
.btn-primary {
  background: var(--carbon);
  color: var(--blanco);
}
.btn-primary:hover {
  background: var(--petroleo);
  transform: translateY(-1px);
}
.btn-primary .arrow { transition: transform .2s ease; }
.btn-primary:hover .arrow { transform: translateX(4px); }

.btn-ghost {
  color: var(--carbon);
  border: 0.5px solid var(--gris-borde);
  background: transparent;
}
.btn-ghost:hover {
  border-color: var(--petroleo);
  color: var(--petroleo);
}

.hero-meta {
  display: flex;
  gap: 40px;
  margin-top: 64px;
  padding-top: 32px;
  border-top: 0.5px solid var(--gris-borde);
}
.hero-meta-item .num {
  font-size: 28px;
  font-weight: 300;
  color: var(--carbon);
  letter-spacing: -1px;
}
.hero-meta-item .lbl {
  font-size: 11px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--gris-muted);
  margin-top: 4px;
}

/* hero visual */
.hero-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 460px;
  margin-left: auto;
}
.hero-visual-frame {
  position: absolute;
  inset: 0;
  background: var(--menta);
  border-radius: 12px;
  overflow: hidden;
}
.hero-visual-frame::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--menta-strong) 0.5px, transparent 0.5px),
    linear-gradient(90deg, var(--menta-strong) 0.5px, transparent 0.5px);
  background-size: 32px 32px;
  opacity: 0.65;
}
.hero-symbol {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-symbol svg {
  width: 72%;
  height: auto;
}
.hero-symbol svg circle[data-node] {
  transform-origin: center;
  transform-box: fill-box;
  animation: node-pulse 3.6s ease-in-out infinite;
}
.hero-symbol svg circle[data-node="0"] { animation-delay: 0s; }
.hero-symbol svg circle[data-node="1"] { animation-delay: .4s; }
.hero-symbol svg circle[data-node="2"] { animation-delay: .8s; }
.hero-symbol svg circle[data-node="3"] { animation-delay: 1.2s; }
.hero-symbol svg circle[data-node="4"] { animation-delay: 1.6s; }
.hero-symbol svg circle[data-node="5"] { animation-delay: 2.0s; }
@keyframes node-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.hero-badge {
  position: absolute;
  bottom: 24px;
  left: 24px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--blanco);
  border: 0.5px solid var(--gris-borde);
  border-radius: 6px;
  font-size: 11px;
  letter-spacing: 1.5px;
  color: var(--gris-texto);
}
.hero-badge .live {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--petroleo-clr);
  box-shadow: 0 0 0 3px rgba(74,153,144,0.2);
}

@media (max-width: 960px) {
  .hero { padding: 130px 0 80px; }
  .hero-inner { grid-template-columns: 1fr; gap: 0; position: relative; }
  .hero-visual { margin: 0; max-width: 100%; aspect-ratio: 16/11; }
  .hero-meta { flex-wrap: wrap; gap: 28px; }
  .hero-text { position: relative; z-index: 1; }
  .hero-bg-mark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: min(360px, 92%);
    max-width: none;
    opacity: 0.14;
    z-index: 0;
    margin: 0;
  }
}

/* ─────────────────────── SECTION SHELL ─────────────────────── */
.section {
  padding: 120px 0;
  border-top: 0.5px solid var(--gris-borde);
}
.section.menta { background: var(--menta); }
.section.dark { background: var(--carbon); color: var(--blanco); border-top: none; }
.section.dark .caps { color: var(--petroleo-clr); }

.section-head {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: end;
  margin-bottom: 64px;
}
.section-head .caps { margin-bottom: 16px; display: block; }
.section-title {
  font-size: var(--t-h1);
  font-weight: 200;
  letter-spacing: -1.5px;
  line-height: 1.05;
  color: var(--carbon);
}
.section.dark .section-title { color: var(--blanco); }
.section-title em {
  font-style: normal;
  color: var(--petroleo);
  font-weight: 300;
}
.section.dark .section-title em { color: var(--petroleo-clr); }
.section-lead {
  font-size: 18px;
  color: var(--gris-texto);
  line-height: 1.6;
  max-width: 560px;
}
.section.dark .section-lead { color: #B8C9C6; }

@media (max-width: 820px) {
  .section { padding: 80px 0; }
  .section-head { grid-template-columns: 1fr; gap: 24px; margin-bottom: 48px; }
}

/* ─────────────────────── SERVICIOS ─────────────────────── */
.services {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 0.5px solid var(--gris-borde);
  border-left: 0.5px solid var(--gris-borde);
}
.service {
  position: relative;
  padding: 48px 40px;
  border-right: 0.5px solid var(--gris-borde);
  border-bottom: 0.5px solid var(--gris-borde);
  background: var(--blanco);
  transition: background .25s ease;
  cursor: default;
}
.service:hover { background: var(--menta); }
.service:hover .service-arrow { transform: translateX(4px); opacity: 1; }

.service-num {
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--petroleo);
  font-weight: 500;
  margin-bottom: 28px;
}
.service-title {
  font-size: 22px;
  font-weight: 400;
  color: var(--carbon);
  margin-bottom: 16px;
  letter-spacing: -0.4px;
}
.service-desc {
  font-size: 15px;
  color: var(--gris-texto);
  line-height: 1.65;
  margin-bottom: 28px;
  max-width: 440px;
}
.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.service-tag {
  font-size: 11px;
  letter-spacing: 0.5px;
  padding: 5px 10px;
  background: var(--menta);
  color: var(--petroleo);
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
}
.service:hover .service-tag {
  background: var(--blanco);
}
.service-arrow {
  position: absolute;
  top: 48px;
  right: 40px;
  font-size: 18px;
  color: var(--carbon);
  opacity: 0.35;
  transition: transform .2s ease, opacity .2s ease;
}

@media (max-width: 820px) {
  .services { grid-template-columns: 1fr; }
  .service { padding: 36px 28px; }
}

/* ─────────────────────── PROCESO ─────────────────────── */
.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.process::before {
  content: '';
  position: absolute;
  top: 19px;
  left: 8%;
  right: 8%;
  height: 0.5px;
  background: var(--gris-borde);
}
.step {
  position: relative;
}
.step-marker {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: var(--blanco);
  border: 0.5px solid var(--gris-borde);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--petroleo);
  font-weight: 500;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}
.section.menta .step-marker { background: var(--menta); }
.step-title {
  font-size: 17px;
  font-weight: 500;
  color: var(--carbon);
  margin-bottom: 10px;
  letter-spacing: -0.2px;
}
.step-desc {
  font-size: 14px;
  color: var(--gris-texto);
  line-height: 1.6;
}
.step-meta {
  margin-top: 16px;
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--gris-muted);
}

@media (max-width: 820px) {
  .process { grid-template-columns: 1fr; gap: 32px; }
  .process::before { display: none; }
}

/* ─────────────────────── STACK ─────────────────────── */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--gris-borde);
  border: 0.5px solid var(--gris-borde);
}
.stack-group {
  background: var(--blanco);
  padding: 36px 32px;
}
.stack-group .caps { margin-bottom: 20px; display: block; color: var(--petroleo); }
.stack-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.stack-pill {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  padding: 6px 12px;
  border: 0.5px solid var(--gris-borde);
  border-radius: 4px;
  color: var(--carbon);
  background: var(--blanco);
  transition: all .15s ease;
}
.stack-pill:hover {
  border-color: var(--petroleo);
  color: var(--petroleo);
}

@media (max-width: 820px) {
  .stack-grid { grid-template-columns: 1fr; }
}

/* ─────────────────────── CASOS / RESULTADOS ─────────────────────── */
.results {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.result-card {
  background: var(--carbon-soft);
  border-radius: 10px;
  padding: 40px 32px;
  border: 0.5px solid #2A4946;
  position: relative;
  overflow: hidden;
}
.result-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 80px;
  background: var(--petroleo-clr);
}
.result-num {
  font-size: 56px;
  font-weight: 200;
  color: var(--blanco);
  letter-spacing: -2px;
  line-height: 1;
  margin-bottom: 8px;
}
.result-num .unit {
  font-size: 22px;
  color: var(--petroleo-clr);
  margin-left: 4px;
}
.result-label {
  font-size: 12px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--petroleo-clr);
  margin-bottom: 32px;
}
.result-desc {
  font-size: 15px;
  color: #B8C9C6;
  line-height: 1.6;
}

@media (max-width: 820px) {
  .results { grid-template-columns: 1fr; }
}

/* ─────────────────────── PRINCIPIOS ─────────────────────── */
.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}
.principle {
  padding: 0 40px 0 0;
  border-right: 0.5px solid var(--gris-borde);
}
.principle:last-child { border-right: none; padding-right: 0; }
.principle + .principle { padding-left: 40px; }

.principle-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--gris-muted);
  margin-bottom: 16px;
}
.principle-title {
  font-size: 22px;
  font-weight: 400;
  color: var(--carbon);
  letter-spacing: -0.4px;
  margin-bottom: 14px;
}
.principle-desc {
  font-size: 15px;
  color: var(--gris-texto);
  line-height: 1.65;
}

@media (max-width: 820px) {
  .principles { grid-template-columns: 1fr; gap: 32px; }
  .principle { padding: 0 0 32px 0; border-right: none; border-bottom: 0.5px solid var(--gris-borde); }
  .principle + .principle { padding-left: 0; padding-top: 32px; }
  .principle:last-child { padding-bottom: 0; border-bottom: none; }
}

/* ─────────────────────── CONTACT ─────────────────────── */
.contact {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 80px;
  align-items: start;
}
.contact-info {
  position: sticky;
  top: 100px;
}
.contact-info .section-title { margin-bottom: 28px; }
.contact-info .section-lead { margin-bottom: 48px; }

.contact-meta {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-top: 32px;
  border-top: 0.5px solid var(--gris-borde);
}
.contact-meta-item .lbl {
  font-size: 10px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--gris-muted);
  margin-bottom: 6px;
}
.contact-meta-item .val {
  font-size: 16px;
  color: var(--carbon);
}
.contact-meta-item .val a:hover { color: var(--petroleo); }

/* form */
.form {
  background: var(--blanco);
  border: 0.5px solid var(--gris-borde);
  border-radius: 12px;
  padding: 40px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}
.field { display: flex; flex-direction: column; }
.field.full { grid-column: 1 / -1; }
.field label {
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gris-muted);
  margin-bottom: 10px;
  font-weight: 500;
}
.field input,
.field textarea,
.field select {
  font-family: inherit;
  font-size: 15px;
  color: var(--carbon);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--gris-borde);
  padding: 10px 0;
  outline: none;
  transition: border-color .15s ease;
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  border-bottom-color: var(--petroleo);
}
.field textarea { resize: vertical; min-height: 100px; }
.field select { cursor: pointer; appearance: none; background: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 4.5L6 7.5L9 4.5' stroke='%231B4D4A' stroke-width='1.2' fill='none'/%3E%3C/svg%3E") no-repeat right center; }

.budget-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}
.chip {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  padding: 8px 14px;
  border: 0.5px solid var(--gris-borde);
  border-radius: 6px;
  color: var(--gris-texto);
  background: var(--blanco);
  cursor: pointer;
  transition: all .15s ease;
}
.chip:hover { border-color: var(--petroleo); color: var(--petroleo); }
.chip.active {
  border-color: var(--carbon);
  background: var(--carbon);
  color: var(--blanco);
}

.form-submit {
  width: 100%;
  padding: 18px 24px;
  background: var(--carbon);
  color: var(--blanco);
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.3px;
  transition: background .15s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}
.form-submit:hover { background: var(--petroleo); }
.form-submit:disabled { opacity: 0.5; cursor: not-allowed; }
.form-footnote {
  margin-top: 16px;
  font-size: 12px;
  color: var(--gris-muted);
  text-align: center;
}

.form-success {
  text-align: center;
  padding: 24px 0;
}
.form-success .check {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--menta);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--petroleo);
  font-size: 24px;
  margin-bottom: 20px;
}
.form-success h3 {
  font-size: 22px;
  font-weight: 400;
  color: var(--carbon);
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}
.form-success p {
  font-size: 14px;
  color: var(--gris-texto);
}

@media (max-width: 960px) {
  .contact { grid-template-columns: 1fr; gap: 48px; }
  .contact-info { position: static; }
  .form-row { grid-template-columns: 1fr; }
  .form { padding: 28px; }
}

/* ─────────────────────── FOOTER ─────────────────────── */
.footer {
  background: var(--carbon);
  color: #B8C9C6;
  padding: 80px 0 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 56px;
  margin-bottom: 64px;
}
.footer-brand .wm {
  display: flex;
  align-items: baseline;
  font-size: 24px;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
}
.footer-brand .wm .w1 { font-weight: 200; color: var(--blanco); }
.footer-brand .wm .w2 { font-weight: 600; color: var(--petroleo-clr); letter-spacing: 2px; }
.footer-brand p {
  font-size: 14px;
  color: #8AA8A4;
  max-width: 280px;
  line-height: 1.6;
  margin-bottom: 28px;
}
.footer-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 3px;
  color: #4A6664;
}

.footer-col h4 {
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--petroleo-clr);
  font-weight: 500;
  margin-bottom: 20px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.footer-col a {
  font-size: 14px;
  color: #B8C9C6;
  transition: color .15s ease;
}
.footer-col a:hover { color: var(--blanco); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 0.5px solid #2A3A38;
  font-size: 12px;
  color: #6A8884;
}
.footer-bottom .mono { color: #4A6664; }

@media (max-width: 820px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .footer-bottom { flex-direction: column; gap: 16px; }
}

/* ─────────────────────── FAQ ─────────────────────── */
.faq-list { max-width: 720px; }
.faq-item { border-bottom: 0.5px solid var(--gris-borde); }
.faq-item:first-child { border-top: 0.5px solid var(--gris-borde); }
.faq-q {
  list-style: none;
  padding: 20px 0;
  font-size: var(--t-body);
  font-weight: 500;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  color: var(--carbon);
}
details > summary.faq-q { display: flex; list-style: none; }
details > summary.faq-q::-webkit-details-marker { display: none; }
details > summary.faq-q::marker { content: none; }
.faq-q::after { content: '+'; font-size: 22px; font-weight: 300; flex-shrink: 0; transition: transform .2s ease; color: var(--petroleo-clr); }
.faq-item[open] .faq-q::after { transform: rotate(45deg); }
.faq-a { padding-bottom: 20px; }
.faq-a p { color: var(--gris-texto); font-size: 15px; line-height: 1.75; margin: 0; }

/* ─────────────────────── REVEAL ANIMATIONS ─────────────────────── */
[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .8s ease, transform .8s cubic-bezier(.2,.7,.3,1);
}
[data-reveal].in {
  opacity: 1;
  transform: none;
}
[data-reveal-delay="1"] { transition-delay: .08s; }
[data-reveal-delay="2"] { transition-delay: .16s; }
[data-reveal-delay="3"] { transition-delay: .24s; }
[data-reveal-delay="4"] { transition-delay: .32s; }